HODUL7.R DISPLAY SYSTEM

CROSS REFERENCES TO RELATED APPLICATIONS

[0001] This patent application is related to patent Application No. 10/688,304 entitled "Electronic

Display Module Having a Four-Point Latching System for

Incorporation into an Electronic Sign and Process", filed on October 17, 2003, pending. This patent application claims priority from the earlier filed U.S. Provisional Application No. 60/647,268 filed January 25, 2005, entitled "Electronic Sign" . The prior applications are hereby incorporated into this application by reference as if fully set forth herein.

BACKGROUND OP THE INVENTION

FIELD OF THE INVENTION

[0002] The present invention relates to electronic sign displays, but more specifically pertains to a modular display system which favors portability by having a plurality of stackable electronic display panels incorporated as modules which are mutually and removably attached or secured to one another and to mounting structures for the support thereof.

DESCRIPTION OF THE PRIOR ART

[0003] Prior art electronic sign displays can be of gigantic proportion and are fashioned utilizing large and heavy structure which requires heavy handling and positioning devices for installation. Ordinarily, the use of such equipment is not a concern where such electronic sign displays are installed on a one-time permanent basis in a concert hall, auditorium or at a stage setting. Entertainment venues of many sizes and varieties often

require electronic sign displays in cooperation with entertainers, rock and roll performances, keynote speakers, bands, orchestras and the like where installation of such electronic sign displays is expensive and often cumbersome. Often the size or shape of electronic sign displays is another factor in that sometimes electronic sign displays are incompatible with doorways, halls and other structural and available space aspects of smaller or older entertainment venues. What is needed is an electronic sign display system which can be handled and simply erected by one person and which is of a suitable size and weight where accommodation and installation of the electronic sign display system in almost any size entertainment area, especially those having difficult access, is readily accomplished. Such a display system is provided by the present invention.

SUMMARY OP THE INVENTION

[0004] The general purpose of the present invention is to provide a modular display system including stackable electronic display panels and mounting structure which is easily transported and erected. The modular display system, the present invention, includes a plurality of stackable electronic display panels each removably attached with one or more adjacent stackable electronic display panels to form a display. Each individual stackable electronic display panel is constructed of a connector framework and a light emitting diode (LED) display module attached thereto by a mutually engaging centrally located LED display module latching system. Each connector framework includes and utilizes connector plates at the top of the connector framework, front connector plate receptors at the bottom of the connector framework having spring-loaded slide pins in alignment thereto, rear connector plate receptors in rear connector assemblies including spring-loaded slide pins and slide pin housings aligned thereto at the bottom and rear of the connector framework, side latch assemblies, side latch keeper assemblies each having an adjustment cam, a plurality of spring-loaded ball detents and detent receptors, and other components for removable attachment, alignment and juxtaposition of adjacent stackable electronic display panels. Vertically stacked stackable electronic display panels are attached utilizing the plurality of connector plates along the top of the connector framework in intimate contact and engagement with the front connector plate receptors, the rear connector plate receptors, and the associated spring-loaded slide pins, respectively, at the bottom of another vertically situated overhead stackable electronic

display panel. Horizontally situated stackable electronic display panels are connected using side latch assemblies and side latch keeper assemblies having adjustment cams where a latch of each side latch assembly of one stackable electronic display panel engages the adjustable cam of each of the side latch keeper assemblies of an adjacent stackable electronic display panel. Arrays of stackable electronic display panels of various configurations can be assembled where attachment occurs both along the horizontal and vertical aspects of the stackable electronic display panels as just described. Each stackable electronic display panel can be suitably sized for handling by an individual where, for purposes of illustration and example, each stackable electronic display panel could measure 20 inches long by 20 inches wide. Provision is also made for adjustment of each stackable electronic display panel with respect to each other along more than one axis for best alignment of each of the connector frameworks to each other in order to seamlessly position the LED display modules.

[0005] According to an embodiment of the present invention, there is provided a modular display system wherein a plurality of suitably sized individual stackable electronic display panels can be juxtaposingly stacked or aligned vertically or can be juxtaposingly placed or aligned side by side horizontally or can be juxtaposingly aligned and placed both vertically and horizontally and mutually secured at locations on or near the mutual horizontal sides or vertical sides of the stackable electronic display panels. Rearwardly located connector plate receptors and forwardly located connector plate receptors of an upper stackable electronic display panel are removably attachable to connector plates of a lower

stackable electronic display panel and side latches of one stackable electronic display panel engage adjustable cams of side latch keeper assemblies of a horizontally adjacent stackable electronic display panel the combination of which offers stable and sturdy connectibility for a vast arrangement of stackable electronic display panels in a modular display system.

[0006] One significant aspect and feature of the present invention is the provision of a modular display system including stackable electronic display panels and mounting structure for suspension, floor mounting, or ground mounting.

[0007] Another significant aspect and feature of the present invention is a modular display system which is comprised of individual stackable connectible electronic display panels which connect physically and electronically.

[0008] Still another significant aspect and feature of the present invention is the provision of individual stackable electronic display panels which are lightweight and of a suitable size for handling and assembly by an individual.

[0009] Yet another significant aspect and feature of the present invention is the provision of connector plates of a first stackable electronic display panel which connect to forwardly located connector plate receptors and to rearwardly located connector plate receptors of a second stackable electronic display panel vertically situated thereabove.

[0010] A further significant aspect and feature of the present invention is the provision of precisely constructed but adjustable planar panels or components adjustable for use along a plane to provide for overall unwavering flat and planar alignment and spacing of LED panels of LED display modules.

[0011] A further significant aspect and feature of the present invention is the provision of alignment structure incorporated between stackable electronic display panels.

[0012] A still further significant aspect and feature of the present invention is the use of spring-loaded slide pins to engage and secure connector plates within connector plate receptors. [0013] Still another significant aspect and feature of the present invention is the use of latches in one side panel of a connector framework to engage adjustable cams in a side panel of an adjacent connector framework to secure connector frameworks side by side. [0014] Still another significant aspect and feature of the present invention is the use of latches in one side panel of a connector framework to engage adjustable cams in a side panel of an adjacent connector framework to provide for vertical adjustability of adjacent connector frameworks with respect to each other vertically along the "Y" axis.

[0015] Still another significant aspect and feature of the present invention is the use of a thumbwheel arrangement to provide for adjustable forward or rearward pivoting of connector frameworks about the "X" axis.

[0016] Still another significant aspect and feature of the present invention is the use of guide structure for alignment of adjustment tools or actuator tools with side latch assemblies and with side latch keeper assemblies.

[0017] Still another significant aspect and feature of the present invention is the incorporation of sealing and other features to eliminate EMI (electromagnetic interference) .

[0018] Still another significant aspect and feature of the present invention is the use of slots in a handle/cable management bracket for use in cable management.

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[0019] Having thus briefly described an embodiment of the present invention and having mentioned some significant aspects and features of the present invention, it is the principal object of the present invention to provide a modular display system and mounting structure.

BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other objects of the present invention and many of the attendant advantages of the present invention will be readily appreciated as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings, in which like reference numerals designate like parts throughout the figures thereof and wherein: [0021] FIG. 1 is a plan view of a modular display system, the present invention, including a plurality of stackable electronic display panels, one form of mounting structure, a computer controller, a video processor, a data distributor, and a remote transportable power rack; [0022] FIG. 2 is an isometric view of a screen composed of four stackable electronic display panels;

[0023] FIG. 3 is an exploded rear view of a stackable electronic display panel;

[0024] FIG. 4 is an exploded front view of a stackable electronic display panel;

[0025] FIG. 5 is an exploded left rear view of a connector framework;

[0026] FIG. 6 is an assembled left rear view of a connector framework; [0027] FIG. 7 is an assembled right rear view of a connector framework;

[0028] FIG. 8 is an exploded left isometric view showing the junction of a side panel and a bottom channel of a connector framework and the relationship of components attached thereto;

[0029] PIG. 9 is an exploded right isometric view showing the junction of a side panel and a bottom channel of a connector framework and the relationship of components attached thereto; [0030] PIG. 10 is a right isometric view of a portion of a connector framework showing a side latch assembly aligned in and secured within a segmented compartment thereof;

[0031] PIG. 11 is a perspective view of a side latch keeper assembly;

[0032] FIG. 12 is a side view of a side latch keeper assembly;

[0033] PIG. 13 is a left isometric view showing the junction of a side panel and a top channel of a connector framework and the relationship of components attached thereto;

[0034] PIG. 14 is a rear view of a stackable electronic display panel showing the connector framework thereof in alignment with and ready to be received by and secured to the LED display module thereof;

[0035] PIG. 15 is a rear view of an assembled stackable electronic display panel showing the aligned and secure mating of the connector framework thereof to the

LED display module thereof by the use of the LED display module latch system;

[0036] FIG. 16 is a rear view showing the upper portion of the connector framework of a first stackable electronic display panel aligned with the lower portion of the connector framework of an overhead second stackable electronic display panel;

[0037] PIG. 17 illustrates the mating of the upper portion of the connector framework of a first stackable electronic display panel with the lower portion of the connector framework of an overhead second stackable electronic display panel and the alignment of the first stackable electronic display panel with an adjacent third stackable electronic display panel located at one side of the first stackable electronic display panel;

[0038] PIG. 18 illustrates beveled surfaces included in the geometrical configuration of the upper portion of the connector framework of a first stackable electronic display panel in distanced alignment with beveled surfaces included in the geometrical configuration of the lower portion of the connector framework of an overhead second stackable electronic display panel;

[0039] FIG. 19 is a view like PIG. 18 but illustrating the upper portion of the connector framework of the first stackable electronic display panel in close alignment with the lower portion of the connector framework of the overhead second stackable electronic display panel;

[0040] PIG. 20 is a rear view of a screen incorporating a plurality of stackable electronic display panels; [0041] PIG. 21 is an exploded view showing two stackable electronic display panels and mounting structure in the form of a suspension mount;

[0042] PIG. 22 is an end view of a suspension mount showing the interconnect sleeve thereof aligned within the spreader beam thereof, and an attachment assembly thereof connected to the spreader beam;

[0043] PIG. 23 is an exploded view of an attachment assembly;

[0044] FIG. 24 is a fragmentary front view in partial cross section showing the capture of connector frameworks of adjacent stackable electronic display panels in attachment assemblies of a suspension mount; [0045] PIG. 25 is a bottom view of an attachment assembly;

[0046] FIG. 26 is an exploded isometric view showing a screen composed of four stackable electronic display panels and mounting structure in the form of a floor stand;

[0047] FIG. 27 is an isometric view showing a plurality of connected connector frameworks associated with mounting structure in the form of a ground stand;

[0048] FIG. 28 is an exploded isometric view of the items shown in FIG. 27;

[0049] FIG. 29 is a partially exploded view of a longitudinal support assembly;

[0050] FIG. 30 is an isometric view of connected connector frameworks and a ground stand incorporating the features of the ground stand of FIG. 27 and including additional structure for support of a large number of stackable electronic display panels of which only the connector frameworks thereof are shown;

[0051] FIG. 31 is a plan view of one layout option of a modular display system in which a single screen composed of ninety-six stackable electronic display panels is utilized;

[0052] FIG. 32 is a plan view of another layout option of a modular display system involving two screens each composed of forty-eight stackable electronic display panels, the two screens being controlled by individual computer controllers;

[0053] PIG. 33 is a plan view of yet another layout option of a modular display system wherein four screens each composed of twenty-four stackable electronic display panels are provided, each screen being operated by a separate computer controller; and,

[0054] FIG. 34 is a plan view of still another layout option of a modular display system involving four screens each composed of twenty-four stackable electronic display panels, all four screens in this example being controlled by a common computer controller.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0055] FIG. 1 is a plan view of a modular display system 1, the present invention, including a plurality of stackable electronic display panels 2a-2n which are modular in design and which are shown separated, mounting structure in the form of a plurality of suspension mounts 3a-3n which are shown separated, a computer controller 4, a video processor 5, a data distributor 6, and a remote transportable power rack 7. Also included are a fiberoptic cable 8 between the video processor 5 and the data distributor 6, Cat-5 cables 9 from the data distributor 6 connecting the stackable electronic display panels 2a-2n, and power cables 10 between the remote transportable power rack 7 and the stackable electronic display panels 2a-2n. The stackable electronic display panels 2a-2n when in intimate contact and intimate connection form a screen, an example of which is shown as screen 12 in FIG. 2.

[0056] PIG. 2 is an isometric view of a screen 12 composed of a plurality of stackable electronic display panels 2a-2n, the stackable electronic display panels 2b and 2c being shown stacked on top of the stackable electronic display panels 2a and 2n. The term stackable refers to placement of stackable electronic display panels 2a-2n in vertical as well as horizontal juxtaposition for the purpose of mutual connection therebetween along both the vertical and horizontal aspects to provide for a suitably sized, shaped, and aligned viewable sign. The stackable electronic display panels 2a-2n are suitably and mutually secured by connector assemblies and other latching structure, as later described in detail. Although the stackable electronic display panels 2a-2n are illustrated forming a square, other arrangements can be utilized. One such arrangement could be just a row of stackable electronic display panels 2a-2n. Another could be a column of stackable electronic display panels 2a-2n. Another could be an arrangement of stackable electronic display panels 2a-2n in a rectangle. Still other arrangements could be portions of rows or columns of stackable electronic display panels 2a-2n in combination or incorporated to fit available space.

[0057] FIG. 3 is an exploded rear view and FIG. 4 is an exploded front view of a stackable electronic display panel, each figure showing a one-piece connector framework 14 and, in alignment therewith, an LED (light emitting diode) display module 16. The LED display module 16 includes a configured support panel 18 having forwardly located components including a rear enclosure panel 20 having an anti-EMI (Electro Magnetic Interference) coating on the inner and/or outer surfaces or other suitable combinations thereof, a handle 21, a lower LED display assembly 22, and an upper LED display assembly 24, the lower LED display assembly 22 and the upper LED display assembly 24 being composed of like components. The upper LED display assembly 24 is shown in exploded form and the lower LED display assembly 22 is shown in assembled form. Numerous components are located forward of the support panel 18, as now described. Cables 26 (FIG. 3) are incorporated to electrically connect the lower LED display assembly 22 and the upper LED display assembly 24. One or more circuit boards, such as circuit board 28 (FIG. 3) are included in the lower and upper LED display assemblies 22 and 24 of the LED display module 16. The upper LED display assembly 24 and the lower LED display assembly 22 each includes, in alignment, an EMI shield gasket 30, a configured rectangular-shaped frame 32 which receives the EMI shield gasket 30 about the periphery thereof and which includes a weather seal gasket 34 also about the periphery thereof and a continuous anti-EMI coated edge 36, an anti-EMI tape 38, an LED panel 40, and a louver panel 42 having a continuous weather seal about the outer periphery thereof. A plate 44 is used to physically connect the lower LED display assembly 22 and the upper LED display assembly 24.

An anti-EMI gasket 46 and a closely juxtaposed weather seal gasket 48 are located about an opening at the lower rearward portion of the rear enclosure panel 20 for accommodation of a heat sink 50. Also located rearwardly of the support panel 18 as part of the LED display module 16, and more specifically as part of the support panel 18, is an LED display module latching system 52 (shown in semi-exploded form) incorporated to removably attach the LED display module 16 to the connector framework 14. The LED display module latching system 52 includes a framework 54, a centrally located actuator mechanism 56 which is accessible from the front or the back, opposed actuator arms 58a and 58b extending in opposite directions from and operated in opposing directions from and by the actuator mechanism 56, and latch housings 60a and 60b at the outer ends of the framework 54 housing pivotable latches 62a and 62b which are pivotally operated by the outer ends of the actuator arms 58a and 58b, respectively. The pivotable latches 62a and 62b engage catches 73 and 75 located at the forward edges of side panels 72 and 74 (PIGS. 5 and 7) , respectively. The LED display module latching system 52 is transversely located upon the rear of the support panel 18 as shown in FIGS. 14 and 15 and is closely related to patent Application No. 10/688,304 entitled "Electronic Display Module Having a Four-Point Latching System for Incorporation into an Electronic Sign and Process" filed October 17, 2003. A portion of the rear enclosure panel 20 serves as a mount for accommodation of signal receptacles 64 and 66, a power receptacle 68, and a diagnostic display 70, all of which are shown in FIG. 3.

[0058] The one-piece connector framework 14 includes structurally reinforced and lightweight

vertically aligned and opposed side panels 72 and 74 joined between the tops and bottoms thereof by horizontally aligned and opposed top and bottom channels 76 and 78 the structure of which serves to provide various types and styles of connection structure or for mounting of other connection structure thereto. Such structure includes, but shall not be limited to, configured connector plates, rearwardly located connector assemblies including connector plate receptors, slide pins and slide pin housings, forwardly located connector plate receptors and slide pins, as well as side latch assemblies having side latches, side latch keepers having an adjustable cam, a plurality of spring-loaded ball detents and corresponding detent holes, and other components for removable attachment and alignment of the connector frameworks 14, and thus the LED display modules 16,, along multiple axes and for juxtaposition of j adjacent stackable electronic display panels 2a-2n, as later described in detail. [0059] A plurality of like alignment posts 80 (FIG. 3) extend outwardly and rearwardly from the support panel 18 to be accommodated in a corresponding plurality of alignment holes 82 residing in the forwardly located planar faces 84 and 86 of the side panels 72 and 74, respectively, to aligningly locate and position the forwardly located planar faces 84 and 86 of the side panels 72 and 74 as well as the planar faces 88 and 90 of the top channel 76 and the bottom channel 78 (i.e., the entire connector framework 14) with and against the rearward facing region of the support panel 18 of the LED display module 16, such as is shown in FIG. 15. The connector frameworks 14, each preferably of one-piece aluminum or, alternatively, of sturdy molded plastic

having an anti-EMI coating, serve as alignable and sturdy structures for removable attachment of the stackable electronic display panels 2a-2n. In the alternative, certain other components could be fashioned of sturdy molded plastic and would require an anti-EMI coating for the suppression of EMI. The connector frameworks 14 removably attach to one another to bring the LED display modules 16 of each of the stackable electronic display panels 2a-2n into closely aligned proximity to provide a substantially seamless display, as shown in PIG. 2.

[0060] Also included as structure of the connector framework 14 are vertically oriented connector plates 92, 94, 96 and 98 located at the tops of the side panels 72 and 74, each connector plate 92, 94, 96 and 98 having an arcuate top. Located at the bottoms of the side panels 72 and 74, respectively, are front connector plate receptors 100 and 102 and rearwardly located connector assemblies 104 and 106. Connector assemblies 104 and 106 also include rear connector plate receptors 108 and 110 and slide pin housings 112 and 114 (PIG. 3) , respectively. Spring-loaded slide pins are associated with the front connector plate receptors 100 and 102 and the rear connector plate receptors 108 and 110 for capture of the connector plates 92, 94, 96 and 98, as described later in detail. A horizontally aligned handle/cable management bracket 116 extends along and behind the top channel 76 and between the top regions of the side panels 72 and 74 and includes multi-purpose obliquely oriented slots 118 and 120. The slots 118 and 120 can function as handholds, can also function as cable conduits, or can be used with attachment devices for maintaining orderly control of interconnecting cables between stackable electronic display panels 2a-2n or cables connecting the stackable

electronic display panels 2a-2n to external devices, such as, but not limited to, computer control components.

[0061] PIG. 5 is an exploded left rear view of a connector framework 14. PIG. 6 is an assembled left rear view of a connector framework 14. PIG. 7 is an assembled right rear view of a connector framework 14. With reference to PIGS. 5, 6 and 7, singularly or in combination, or with reference to other figures, other components and features of the invention are now further described.

[0062] Aligned attachment of multiple connector frameworks 14 of the stackable electronic display panels 2a-2n along the vertical aspect is accomplished by the use of components located at or near the intersections of the side panels 72 and 74 with the top and bottom channels 76 and 78, respectively, at the upper and lower regions of the side panels 72 and 74. More specifically, a vertically oriented front connector plate mounting slot 122 and a vertically oriented back connector plate mounting slot 124 are located at the upper end of the side panel 72, and a vertically oriented front connector plate mounting slot 126 and a vertically oriented back connector plate mounting slot 128 are located at the upper end of the side panel 74, each mounting slot having suitably located sets of threaded holes extending therethrough for securing of the connector plates 92, 94, 96 and 98, respectively, thereto and therein, as shown later in detail. The connector plates 92, 94, 96 and 98 include engagement holes 92a, 94a, 96a and 98a, respectively, for subsequent engagement of spring-loaded slide pins, as described later in detail. At the lower region of the side panel 72, the front connector plate receptor 100 includes a vertically oriented front connector plate receptor slot 130, and at the lower region of the side panel 74, the front connector plate receptor 102 includes

a vertically oriented front connector plate receptor slot 132. Attached to the lower region of the side panel 72 is the connector assembly 104 having multiple structures including the rear connector plate receptor 108 which has a vertically oriented rear connector plate receptor slot 134. Attached to the lower region of the side panel 74 is the connector assembly 106 having multiple structures including the rear connector plate receptor 110 which has a vertically oriented rear connector plate receptor slot 136. A front spring-loaded slide pin assembly 138 is located in and aligns in structure at one end of the bottom channel 78 in suitable alignment with the front connector plate receptor 100 and front connector plate receptor slot 130, and a rear spring-loaded slide pin assembly 140 is located in the slide pin housing 112 in suitable alignment with the rear connector plate receptor 108 and rear connector plate receptor slot 134. Correspondingly, a front spring-loaded slide pin assembly 142 is located in and aligns in structure at the other end of the bottom channel 78, generally in suitable alignment with the front connector plate receptor 102 and front connector plate receptor slot 132, as partially shown, and a rear spring-loaded slide pin assembly 144 is located in the slide pin housing 114 in suitable alignment with the rear connector plate receptor 110 and rear connector plate receptor slot 136. Connection of the connector assemblies 104 and 106 to the lower structure of the side panels 72 and 74 includes adjustable features to provide for pivotal positioning of the lower end of the connector framework 14 and attached components forwardIy or rearwardIy about the "X" axis. Side latch assemblies 146 and 148 mount in segmented compartments 150 and 152 (PIG. 7) , respectively,

in the side panel 72, and side latch keeper assemblies 154 and 156 mount in segmented compartments 158 and 160

(FIGS. 5 and 6) , respectively, in the side panel 74 to connect horizontally situated connector frameworks 14 and to offer positioning of the connector frameworks 14 and attached components vertically along the ¹¹ Y" axis, as later described in detail. Also located in and secured within the geometrically configured structure of the side panel 72 are spring-loaded ball detents 162a, 162b and 162c (PIG. 7) which assist in initial alignment of the side panel 72 of one connector framework 14 to detent holes 164a, 164b and 164c (PIG. 5) of the side panel 74 of an adjacently located connector framework 14. With respect to vertically situated connector frameworks 14, spring-loaded ball detents 166a and 166b are located in and secured within the geometrically configured structure of the top channel 76 which assist in initial alignment of the top channel 76 of a connector framework 14 to detent holes (not shown) of the bottom channel 78 of another connector framework 14 located thereabove. Threaded holes 167 and 169 are included at the rear of the side panel 72 and threaded holes 171 and 173 are included at the rear of the side panel 74 for mounting of the stackable electronic display panels 2a-2n to a mounting surface, as desired.

[0063] FIGS. 8 and 9 are exploded left and right isometric views showing the junction of the side panel 72 and the bottom channel 78 of a connector framework 14 and the relationship of components attached to and utilized therewith. The structure and method of attachment of the connector assembly 104 allows for adjustable attachment to the lower region of the side panel 72 using tongue and groove style geometry coupled with adjustable hardware to facilitate pivotal alignmental actuation of the connector framework 14 and associated components about the ¹¹ X" axis. One lower portion of the side panel 72 includes a horizontally oriented tongue 168 which aligns to and which is adjustably actuated vertically within a horizontally oriented groove 170 at the top of the connector assembly 104. Mutual fixation of and actuation of the side panel 72 with respect to the connector assembly 104 is facilitated by the use of a threaded shaft 172, a thumbwheel adjuster 174, and other hardware and features. The threaded shaft 172 extends through a hole 176 in an extended portion of the lower region of the side panel 72 and through a portion of the tongue 168, and is affixed therein by a nut 178, preferably an acorn nut, at the top of the threaded shaft 172 and another nut 180 in a recess 182 located in close proximity to the tongue 168. The lower portion of the threaded shaft 172 extends through and below the general structure of the tongue 168 to pass through a series of vertically aligned body holes 184 located below the groove 170, through a threaded hole 186 at the center of the thumbwheel adjuster 174, and finally into the bottommost of the series of vertically aligned body holes 184 being located in the connector assembly 104 at a position just below the thumbwheel adjuster 174. An interrupted slot 188 in horizontal

orientation in the connector assembly 104 provides for locating of and rotational access to the thumbwheel adjuster 174 and also provides opposed upper and lower bearing surfaces for intimate adjustmental contact with the upper and lower surfaces of the thumbwheel adjuster 174. The thumbwheel adjuster 174, which is shown in place in FIG. 7, includes spaced holes 189 about the periphery for accommodation of an adjustment tool. The interaction of the thumbwheel adjuster 174 and threaded shaft 172 with the interrupted slot 188 provides for screw jack actuation of the connector assembly 104 with respect to the side panel 72, whereby the tongue 168 is actuated vertically with respect to the groove 170. More specifically, the interaction of the thumbwheel adjuster 174 and threaded shaft 172 provides for screw jack actuation of the connector assembly 104 with respect to the side panel 72 about portions of the front spring-loaded slide pin assembly 138. Correspondingly, another threaded shaft 172, another nut 178, another nut 180, and another thumbwheel adjuster 174 are provided and similarly utilized at the lower portion of the side panel 74.

[0064] The front spring-loaded slide pin assembly 138 includes a slide pin 190 having a taper at one end, an actuator shaft 192 secured to and extending from the slide pin 190, a knob 194 at the outboard end of the actuator shaft 192, a pin 196 extending through and beyond the circumference at opposing locations of the slide pin 190, and a spring 198 located about the slide pin 190 and contained thereupon by the pin 196 and structure described later in detail.

[0065] Correspondingly as shown in FIG. 5, the front spring-loaded slide pin assembly 142 includes a

slide pin 190a having a taper at one end, an actuator shaft 192a secured to and extending from the slide pin 190a, a knob 194a at the outboard end of the actuator shaft 192a, a pin 196a extending through and beyond the circumference at opposing locations of the slide pin 190a, and a spring 198a located about the slide pin 190a and contained thereupon by the pin 196a and structure described later in detail.

[0066] Structure in the bottom channel 78 and structure in the front connector plate receptor 100 functions as a mount and for interaction with the front spring-loaded slide pin assembly 138 which is positionable therein to a closed or "engaged" position to lockingly and connectingly engage a connector plate, such as connector plate 92, of one of a vertically situated stackable electronic display panel 2a-2n located below. Such structure includes a vertically aligned inwardly located panel 200 vertically spanning the interior of the bottom channel 78 having an arcuate surface 202 exceeding 180° for accommodation of the slide pin 190, and an access slot 204 intersecting the arcuate surface 202. Another structure is a vertically aligned outwardly located panel 206 vertically spanning the interior of the bottom channel 78 having an arcuate surface 208 and intersecting slot 210, whereby the outwardly located panel 206 is incorporated for intimate contact with the inboard end of the spring 198 and whereby the arcuate surface 208 and the slot 210 accommodate the slide pin 190. Other structure includes an inboard hole 212 extending through the inwardly located portion of the front connector plate receptor 100 (FIG. 8) and an outboard hole 214 extending through the outwardly located portion of the front connector plate receptor 100 (FIG. 9) . The arcuate

surface 202 and the inboard hole 212 always provide support for the slide pin 190 when the tapered end of the slide pin 190 is retracted from the front connector plate receptor slot 130 toward the open or "disengaged" position. The outboard hole 214 supplies full support for the tapered end of the slide pin 190 when the tapered end of the slide pin 190 is positioned just beyond the front connector plate receptor slot 130 in the "engaged" position. One end of the spring 198 is contained on the slide pin 190 by the pin 196 and the other end of the spring 198 is contained on the slide pin 190 by impingement with the portion of the outwardly located panel 206 surrounding the arcuate surface 208. Such capturing of the spring 198 on the slide pin 190 maintains outwardly directed force upon the slide pin 190 to attempt to maintain the slide pin 190 in the "engaged" position; i.e., the position utilized for engaged capture of a connector plate such as connector plate 92. During such an "engaged" position, a greater portion of the actuator shaft 192 extending from the slide pin 190 is positionally located between the inwardly located panel 200 and the outwardly located panel 206, and the slide pin 190 is forcibly urged to maintain the "engaged" position by action of the spring 198. Provision is made for positioning and maintaining the front spring-loaded slide pin assembly 138 to the open or "disengaged" position so that unencumbered capture of a connector plate such as connector plate 92 can be easily and readily accomplished without interference. Such positioning is accomplished by ensuring that the actuator shaft 192 has been maneuvered through the access slot 204 which intersects the arcuate surface 202 to a position inward of the inwardly located panel 200 and then toggling the actuator shaft 192 either

upwardly or downwardly and then releasing the knob 194 to allow the action of the compressed spring 198 to force the actuator shaft 192 to contact the inwardly located panel 200 to cause the slide pin 190 to remain "disengaged" as positioned. Positioning of the front spring-loaded slide pin 190 to the closed or "engaged" position is readily and easily accomplished by reorienting the actuator shaft 192 to realign with the access slot 204 to allow the force of the compressed spring 198 to forcibly urge the tapered end of the slide pin 190 fully through the front connector plate receptor slot 130 and the front connector plate receptor 100, as well as through an engagement hole 92a of the connector plate 92 for suitable capture thereto. The front spring-loaded slide pin assembly 142 functions in a similar and corresponding manner.

[0067] The rear spring-loaded slide pin assembly 140 is constructed and functions much in the same manner as the front spring-loaded slide pin assembly 138. The rear spring-loaded slide pin assembly 140 includes a slide pin 216 having a taper at one end, an actuator shaft 218 secured to and extending from the slide pin 216, a knob 220 at the outboard end of the actuator shaft 218, a pin 222 extending through and beyond the circumference at opposing locations of the slide pin 216, and a spring 224 located about the slide pin 216 and contained thereupon by the pin 222 and structure described later in detail.

[0068] The rear spring-loaded slide pin assembly 144 shown in FIG. 5 includes a slide pin 216a having a taper at one end, an actuator shaft 218a secured to and extending from the slide pin 216a, a knob 220a at the outboard end of the actuator shaft 218a, a pin 222a

extending through and beyond the circumference at opposing locations of the slide pin 216a, and a spring 224a located about the slide pin 216a and contained thereupon by the pin 222a and structure described later in detail. The rear spring-loaded slide pin assembly 140 and the rear spring-loaded slide pin assembly 144 function in a similar and corresponding manner.

[0069] The slide pin housing 112 includes a vertically oriented inwardly located panel 226 having opposed upper and lower arcuate surfaces 228a and 228b, a front access slot 230 and a rear access slot 232, each intersecting the opposed arcuate surfaces 228a and 228b, and a vertically oriented first intermediate panel 234 having a hole 236 extending therethrough. A vertically oriented second intermediate panel 238 being part of the rear connector plate receptor 108 and having a hole 240 extending therethrough, and a vertically oriented outwardly located panel 242 being part of the rear connector plate receptor 108 and having an outboard hole 244 extending therethrough are incorporated for support of the slide pin 216.

[0070] The arcuate surfaces 228a and 228b and the holes 236 and 240 always provide support for the slide pin 216 when the slide pin 216 is retracted from the rear connector plate receptor slot 134. The outboard hole 244 also supplies full support for the tapered end of the slide pin 216 when the tapered end of slide pin 216 is positioned just beyond the rear connector plate receptor slot 134. One end of the spring 224 is contained on the slide pin 216 by the pin 222 and the other end of the spring 224 is contained on the slide pin 216 by impingement with the portion of the first intermediate panel 234 surrounding the hole 236. Such capturing of the

spring 224 on the slide pin 216 maintains outwardly directed force upon the slide pin 216 to attempt to maintain the slide pin 216 in the "engaged" position; i.e., the position utilized for engagement of a connector plate such as connector plate 94. During such an "engaged" position, a greater portion of the actuator shaft 218 extending from the slide pin 216 is positionally located between the inwardly located panel 226 and the first intermediate panel 234, and the slide pin 216 is forcibly urged to maintain the "engaged" position by action of the spring 224. Provision is made for positioning and maintaining of the rear spring-loaded slide pin assembly 140 to the open or "disengaged" position so that unencumbered capture of a connector plate, such as connector plate 94, can be easily and readily accomplished without interference. Such positioning is accomplished by ensuring that the actuator shaft 218 has been maneuvered through either front or rear access slots 230 or 232 which intersect the arcuate surfaces 228a and 228b to a position inward of the inwardly located panel 226 and then toggling the actuator shaft 218 either upwardly or downwardly and then releasing the knob 194 to allow the action of the compressed spring 224 to force the actuator shaft 218 to contact the inwardly located panel 226 to cause the slide pin 216 to remain "disengaged" as positioned. Positioning of the rear spring-loaded slide pin assembly 140 to the closed or "engaged" position is readily and easily accomplished by reorienting the actuator shaft 218 to realign with either of the front or rear access slots 230 or 232 to allow the force of the compressed spring 224 to forcibly urge the tapered end of slide pin 216 fully through the outwardly located hole 244 and the rear connector plate receptor 108

and through an engagement hole 94a of the connector plate 94 for suitable capture thereto by incorporating the "engaged" position of the slide pin 216. The front spring-loaded slide pin assembly 142, the rear spring-loaded slide pin assembly 144, and the connector assembly 106 are mirror image-like components of the front spring-loaded slide pin assembly 138, the rear spring-loaded slide pin assembly 140, and the connector assembly 104 having similarly constructed components in mirror image form having the same function and utilization.

[0071] Side latch assemblies 146 and 148 mount in segmented compartments 150 and 152 (PIG. 7) , respectively, in the side panel 72, and side latch keeper assemblies 154 and 156 mount in segmented compartments 158 and 160 (FIGS. 5 and 6) , respectively, in the side panel 74 for mutual connection and interaction to connect horizontally situated connector frameworks 14 and associated components and to offer positioning of the connector frameworks 14 and associated components vertically along the "Y" axis. The side latch assemblies 146 and 148 are similar in construction having similarly designated components for use in either of the segmented compartments 150 or 152. With reference to FIGS. 8 and 9, side latch assembly 148 is now described. The lower side latch assembly 148 includes a bracket 246 suitable for mounting within the segmented compartment 152. An operating shaft 248 having a rearwardly facing tool receptor 250 extends through the opposed sides 252 and 254 of the bracket 246 for pivotal actuation therein. A latch 256, preferably having a hook shape, is located between the sides 252 and 254 and is attached over and about the operating shaft 248 and is positioned by the operating shaft 248 about the axis of

the operating shaft 248. Additionally, an indicator tab 258 secures to and extends inwardly from the rearwardly located portion of the operating shaft 248 for viewable accommodation by one of a number of slots 260 located in the side panel 72. Individual indicator tabs 258 are viewable through the slots 260 when individual operating shafts 248 each has been rotated to the position where the latch 256 engages a cam 280 (FIG. 11) of an adjacent side latch keeper assembly 154 to thereby verify the locked position of the latches 256. Each of the segmented compartments 150 and 152 includes a notched panel 262 for accommodation of the operating shaft 258, as well as opposed angled guide panels 264 and 266 extending in perpendicular fashion from the side panel 72. Although the opposed guide panels 264 and 266 are shown as being planar, they can be of any suitable geometrical shape to offer tool guidance therebetween to align a suitable adjustment tool, such as a hex-head wrench for example, with the tool receptor 250 of each of the side latch assemblies 146 and 148 installed within the segmented compartments 150 and 152, such as generally shown in PIG. 10. A plurality of access holes 268 are located extending through the side panel 72 for insertion of a suitable adjustment tool for actuation of the side latch assemblies 146 and 148. FIG. 10 shows the side latch assembly 146 aligned in and secured within the angled segmented compartment 150 in the same fashion that the side latch assembly 148 is aligned in and secured within the segmented compartment 152. Illustrated in particular is the alignment of the tool receptor 250 in the side latch assembly 146 with the guide panels 264 and 266 and the upper access hole 268.

[0072] FIG. 11 is a perspective view of the side latch receptor assembly 154, and FIG. 12 is a side view of the side latch keeper assembly 154. The side latch keeper assemblies 154 and 156 are similar in construction having similarly designated components for use in either of the segmented compartments 158 or 160, as shown in FIG. 6. The side latch receptor assembly 154 includes a bracket 270 having opposed sides 272 and 274. An operating shaft 276, part of which includes a hexagonal exterior 278 and part of which is the cam 280, extends through a hexagonal hole 282 in the side 272 and a body hole 284 in the side 274 of the bracket 270, respectively, for pivotal actuation therein. A rearwardly facing tool receptor 285 is included at one end of the operating shaft 276. A spring clip 286 engages one end of the operating shaft 276 adjacent to the outwardly located surface of the side 274, and a spring 288 aligns over and about one end of the operating shaft 276 between the side 274 and an annular shoulder 290 located at one end of the cam 280 to spring load the operating shaft 276 in a direction outwardly from the bracket 270. Such outwardly directed force causes a portion of the hexagonal exterior 278 of the operating shaft 276 to lockingly engage the hexagonal hole 282 in the side 272 to maintain the last rotational orientation of the cam 280. A groove 292 interrupts the hexagonal exterior 278 of the operating shaft 276 at a location near the hexagonal hole 282 to facilitate rotational adjustment of the cam 280 for interaction with the side latch assembly, such as side latch assembly 146 of one of the adjacent stackable electronic display panels 2a-2n, for vertical positional adjustment along the ¹¹ Y" axis. Rotational adjustment of the cam 280 is initiated by the use of a

suitable adjustment tool, such as a hex-head wrench for example, with the tool receptor 285 to forcibly position the operating shaft 276 against the force of the spring 288 to disengage the hexagonal exterior 278 of the operating shaft 276 from intimate contact and influence with the hexagonal hole 282 in the side 272. In such a maneuver, the groove 292 is positioned within the hexagonal hole 282, thereby permitting adjustable rotation of the operating shaft 276 and the cam 280 to a new position. When the desired rotation is achieved for proper alignment, the adjustment tool is removed, thereby allowing spring action to reposition the operating shaft 276 to cause re-engagement and locking of the portion of the hexagonal exterior 278 located inwardly from the groove 292 of the operating shaft 276 with the hexagonal hole 282.

[0073] FIG. 13 is a left isometric view showing the junction of the side panel 74 and the top channel 76 and the relationship of components attached to and utilized therewith. Shown in particular is the segmented compartment 158 for accommodation of the side latch keeper assembly 154. The segmented compartment 160 is similar in construction and includes similarly designated components.

[0074] Each of the segmented compartments 158 and 160 includes a notched panel 294 for accommodation of the operating shaft 276, as well as opposed angled guide panels 296 and 298 extending in perpendicular fashion from the side panel 74. Although the opposed guide panels 296 and 298 are shown as being planar, they can be of any suitable geometrical shape to offer tool guidance therebetween to align a suitable adjustment tool, such as a hex-head wrench for example, with the tool receptors 285 installed in each of the side latch keeper assemblies 154 and 156 within the segmented compartments 158 and 160, such as generally shown in PIG. 6. A plurality of access holes 300 (FIG. 5) are located extending through the side panel 74 for insertion of a tool for actuation of the side latch keeper assemblies 154 and 156.

[0075] PIG. 14 is a rear view of the stackable electronic display panel 2a showing the connector framework 14 thereof in alignment with and ready to be received by and secured to the LED display module 16 thereof by action of the previously described LED display module latching system 52.

[0076] PIG. 15 is a rear view of the assembled stackable electronic display panel 2a showing the aligned and secure mating of the connector framework 14 thereof to the LED display module 16 thereof by the use of the LED display module latching system 52. Latching is accomplished by operating the actuator mechanism 56 to operate the actuator arms 58a and 58b, and thereby cause the pivotal latches 62a and 62b (FIG. 3) to engage the catches 73 and 75 (FIGS. 3 and 5) , respectively.

MODE OF OPERATION

[0077] The mode of operation is set forth primarily with reference to FIGS. 16-20 with occasional reference to previously described figures. Additional information regarding electronic control and operation using V-Tour™ computer controller 4, a V-Link® video processor 5, a data distributor 6, a remote transportable power rack 7, cabling, and the like is included later with reference to FIGS. 31-34 showing exemplary options in which the modular display system can be configured.

[0078] FIG. 16 is a rear view showing the upper portion of the connector framework 14 associated with a stackable electronic display panel 2a aligned with the lower portion of the connector framework 14 associated with an overhead stackable electronic display panel 2b. For purposes of brevity and clarity, the rear enclosure panels 20 and other closely associated components are not shown. FIG. 16 shows the connector plates 92, 94, 96 and 98 at the upper portion of the connector framework 14 associated with the stackable electronic display panel 2a in vertically spaced alignment with the front connector plate receptor slot 130 of the front connector plate receptor 100, the rear connector plate receptor slot 134 of the connector assembly 104, the front connector plate receptor slot 132 of the front connector plate receptor 102, and the rear connector plate receptor slot 136 of the connector assembly 106 of the connector framework 14 associated with the overhead stackable electronic display panel 2b, where the connector framework 14 associated with the overhead stackable electronic display panel 2b awaits subsequent and mutual mated and removable attachment to the underlying connector framework 14 associated with the stackable electronic

display panel 2a. Although the connector frameworks 14 are not shown in close intimate juxtaposed contact, the operable components thereof are shown in the positions required for secure mutual attachment to one another along the vertical aspect. The functions and relationships of the connector plates 92 and 94 with respect to the front connector plate receptor 100 and associated components and the connector assembly 104 and associated components are identical to the functions and relationships of the connector plates 96 and 98 with respect to the front connector plate receptor 102 and associated components and the connector assembly 106 and associated components, and as such the description of the function of the components of the connector plates 92 and 94 with respect to the front connector plate receptor 100 and associated components and the connector assembly 104 and associated components correspondingly applies to the function of the connector plates 96 and 98 in association with the front connector plate receptor 102 and associated components and the connector assembly 106 and associated components. Prior to mutual mating and removable attachment of the connector framework 14 associated with the overhead stackable electronic display panel 2b to the connector framework 14 associated with the stackable electronic display panel 2a, the slide pins 190 and 216 of the front spring-loaded slide pin assembly 138 and the rear spring-loaded slide pin assembly 140, respectively, and the slide pins 190a and 216a of the front spring-loaded slide pin assembly 142 and the rear spring-loaded slide pin assembly 144 are positioned to the "disengaged" position, as previously described, awaiting further positioning for capturing of the connector plates 92, 94, 96 and 98. The connector frameworks 14 of

stackable electronic display panel 2a and the overhead stackable electronic display panel 2b are brought into intimate contact by bringing the spring-loaded ball detents 166a-166b on the top surface of the top channel 76 of the stackable electronic display panel 2a into alignment with detent holes (not shown) on the bottom surface of the bottom channel 78 of the overhead stackable electronic display panel 2b, as well as intimate contact involving the mutual and respective alignment of the connector plates 92, 94, 96 and 98 with the front connector plate receptor slot 130 of the front connector plate receptor 100, the rear connector plate receptor slot 134 of the connector assembly 104, the front connector plate receptor slot 132 of the front connector plate receptor 102, and the rear connector plate receptor slot 136 of the connector assembly 106 of the overhead stackable electronic display panel 2b. Then, slide pins 190 and 216 of the front spring-loaded slide pin assembly 138 and the rear spring-loaded slide pin assembly 140, respectively, and the slide pins 190a and 216a of the front spring-loaded slide pin assembly 142 and the rear spring-loaded slide pin assembly 144 are positioned to the "engaged" position, as previously described, to extend through the engagement holes 92a, 94a, 96a and 98a of the connector plates 92, 94, 96 and 98 and other structure, thereby completing capturing.

[0079] PIG. 17 illustrates the mating of the upper portion of the connector framework 14 of a stackable electronic display panel 2a with the lower portion of the connector framework 14 of an overhead stackable electronic display panel 2b and the alignment of the stackable electronic display panel 2a with an adjacent stackable electronic display panel 2n located at one side of the stackable electronic display panel 2a. Shown in particular is the use of the rear spring-loaded slide pin assembly 144 with the connector plate 98 and the use of the rear spring-loaded slide pin assembly 140 with the connector plate 94, as previously described. The slide pin 190a of the front spring-loaded slide pin assembly 142, shown in other figures, engages the connector plate 96, and the slide pin 190 of the front spring-loaded slide pin assembly 138 engages the connector plate 92 in a similar manner, as previously described. The relationship of the slide latch assemblies 146 and 148 each having a latch 256 in the stackable electronic display panel 2a to the slide latch keeper assemblies 154 and 156 in the adjacent stackable electronic display panel 2n is also shown. The latches 256 engage the cams 280 of the slide latch keeper assemblies 154 and 156. Subsequent adjustment of the cams 280 utilizing the operating shafts 276 causes interaction with the latches 256 for vertical adjustment of adjacent connector frameworks 14 and thus of stackable electronic display panels 2a-2n to bring the edges of adjacent stackable electronic display panels 2a-2n into alignment to provide for seamless viewing of the LED pixels.

[0080] FIG. 18 illustrates beveled surfaces included in the geometrical configuration of the upper portion of the connector framework 14 of a stackable electronic display panel 2a in distanced alignment with the lower portion of the connector framework 14 of an overhead stackable electronic display panel 2b having opposed complementary beveled surfaces, wherein adjustability about the junction of the mated connector plate 96 and slide pin 190a of the front spring-loaded slide pin assembly 142, shown in PIG. 19 (and about the junction of the mated connector plate 92 and slide pin 190 of the front spring-loaded slide pin assembly 138) , is provided to facilitate rotational adjustment of the stackable electronic display panels 2a-2n about the ¹¹ X" axis (forward and rearward tilt) by actuation of the thumbwheel adjusters 174 along the threaded shafts 172. The profile of the front connector plate receptor 102 includes adjacent and opposed bevels 302 and 304 which extend along the bottom surface of the bottom channel 78 to and including the front connector plate receptor 100. The profile of the upper portion of the side panel 74 includes opposed bevels 306 and 308 opposing the bevels 302 and 304 and extending along the top surface of the top channel 76 to and including the upper portion of the side panel 72. The bevel 308 starts at the upper portion of the side panel 74 in close proximity to the connector plate 96 and is interrupted to further continue at the upper portion of the side panel 74 in close proximity to the connector plate 98.

[0081] PIG. 19 is a view like PIG. 18 but illustrating the upper portion of the connector framework 14 of the stackable electronic display panel 2a in close alignment with the lower portion of the connector framework 14 of the overhead stackable electronic display panel 2b.

[0082] PIG. 20 is a rear view of a screen 12 incorporating a plurality of stackable electronic display panels 2a-2n. In addition to mated and secured attachment along the vertical aspect as previously described, juxtapositional mating and secured attachment along the horizontal aspect is also provided. For example, the side panel 72 of the stackable electronic display panel 2a can be juxtaposingly aligned to the side panel 74 of the stackable electronic display panel 2n with the assisted guidance offered by the detent holes 164a-164c of the side panel 74 of the stackable electronic display panel 2n and the corresponding spring-loaded ball detents 162a-162c of the side panel 72 of the stackable electronic display panel 2a. For example and illustration, the latches 256 on the side panel 72 of the stackable electronic display panel 2a are actuated to engage the cams 280 on the side panel 74 of the stackable electronic display panel 2n. Thus, the stackable electronic display panels 2a and 2n are juxtapositionally mated in secured attachment along the horizontal aspect and can be adjusted, as previously described, in a vertical fashion to provide alignment between the stackable electronic display panels 2a-2n.

[0083] A plurality of stackable electronic display panels 2a-2n can be aligned, mated and attached along the vertical and horizontal aspects, as described. Overall integrity along the vertical aspect is enhanced by the robustness of the connector plates 92, 94, 96 and 98 and the robustness of the front connector plate receptors 100 and 102 and the connector assemblies 104 and 106 as well as the interlocking capabilities thereof where each of the corners; i.e., the connector plates 92, 94, 96 and 98, are mutually attached to the front connector plate receptors 100 and 102 and connector assemblies 104 and 106

of a vertically situated overhead stackable electronic display panel 2a-2n utilizing multiple positive locking schemes. Aligned attached mating along the horizontal aspect incorporating the relationship of the latches 256 and the cams 280 located in the side panels 72 and 74 incorporated with the attached mating along the horizontal aspect incorporating the connector plates 92, 94, 96 and 98, the front connector plate receptors 100 and 102, and connector assemblies 104 and 106 provides a synergistic structure having alignment capabilities coupled with structural robustness.

[0084] The stackable electronic display panels 2a-2n are interconnected by cables which utilize the signal receptacles 64 and 66 on the rear enclosure panel 20 and are connected to computerized control systems known to the art to control the content displayed utilizing the modular display system 1. Optionally, the modular display system l can include border attachment points, rails, frames, and the like, and the stackable electronic display panels 2a-2n can be suspended or supported from the bottom by suitable mounting structure. Although the stackable electronic display panels 2a-2n are shown as squares, other suitable shapes, such as a rectangle, may be utilized. The teachings of the invention may be utilized to provide structure for support of incandescent lighting, flat panel displays, LCD displays, graphic nonelectrical displays, or displays of other types.

MOUNTING STRUCTURES

[0085] PIG. 21 is an exploded view showing two stackable electronic display panels 2a and 2b and mounting structure in the form of a suspension mount 3a such as for attaching to a structural member of a building, to a structural member of a stage or stadium, or to other like structural members. One or more spreader beams 310, often referred to as bumpers, are utilized as shown to provide suspended mounting incorporating cables, chains, or the like of a plurality of stackable electronic display panels 2a-2n, such as the stackable electronic display panels 2a and 2b shown. A plurality of like reversible geometry attachment assemblies 312a-312n slidingly engage the lower region of the spreader beam 310. The attachment assemblies 312a-312n accommodate removable attachment to the connector plates 92, 94, 96 and 98 of the stackable electronic display panels 2a-2b. Additionally, another row of stackable electronic display panels in the plurality of stackable electronic display panels 2a-2n, such as stackable electronic display panels 2c-2n, could attach to the lower portion of the stackable electronic display panels 2a and 2b in removable attachment, as previously described, as well as additional rows therebelow. Horizontally situated stackable electronic display panels could also be connected thereto, as previously described. An interconnect sleeve 314 is used to connect adjacent spreader beams 310 for additional breadth of display where additional stackable electronic display panels are incorporated.

[0086] FIG. 22 is an end view of the suspension mount 3a showing the interconnect sleeve 314 aligned within the spreader beam 310 and the attachment assembly 312n associated in sliding engagement with the lower region of the spreader beam 310.

[0087] With reference to PIGS. 21 and 22, the spreader beam 310 and the relationship with the interconnect sleeve 314 and the attachment assembly 312n is now described. The spreader beam 310 is generally an elongated triangular structure having angled side panels 316 and 318 and a bottom panel 320. A panel 322 extends along the apex formed by the junction of the upper regions of the side panels 316 and 318 and includes a plurality of holes 324a-324n used for attachment of cables, hooks, chains, or other attachment devices used for suspension. A plurality of holes 326a-326n are included extending through the side panel 316 • of the spreader beam 310 and a plurality of holes 328a-328n are included extending through the side panel 318 (FIG. 22) of the spreader beam 310 for use in securing the interconnect sleeve 314 within one or more spreader beams 310. The interconnect sleeve 314 is generally an elongated triangular structure having angled side panels 330 and 332 and a bottom panel 334 and is suitably sized to telescopingly engage the interior of one spreader beam 310 and to fittingly engage one end of an adjacent spreader beam 310. Vertically aligned pins 336a and 336b mounted in the bottom panel 334 of the interconnect sleeve 314 engage horizontally aligned slots 338a and 338b in the bottom panel 320 of the spreader beam 310 to ensure that the interconnect sleeve 314 does not disengage from the spreader beam 310 for the purpose of storage, safety and convenience. The slots 338a and 338b are also utilized to

act as guides in cooperation with the pins 336a and 336b extending therethrough to prevent binding between the interconnect sleeve 314 and the spreader beam 310 when the interconnect sleeve 314 is positioned along the interior of the spreader beam 310. The pins 336a and 336b can be manually urged to position the interconnect sleeve 314 outwardly with respect to the spreader beam 310, especially when the interconnect sleeve 314 is engaged fully within the spreader beam 310 and it is desired to connect the interconnect sleeve 314 within an adjacently placed spreader beam 310. A plurality of holes 340a-340n are included extending through the side panel 330 of the interconnect sleeve 314 and a plurality of holes 342a-342n (FIG. 22) are included extending through the side panel 332 (PIG. 22) of the interconnect sleeve 314 for use in fixating the position of the interconnect sleeve 314 totally within one spreader beam 310 when only one interconnect sleeve 314 is used or for extended use when the interconnect sleeve 314 is incorporated to connect adjacent spreader beams 310. Captivation pins 344 pass in various arrangements through the holes 326a-326n and 328a-328n of the spreader beam 310 and through the holes 340a-340n and 342a-342n of the interconnect sleeve 314 to accommodate the use of one or more spreader beams. Keeper pins 346 are used at the ends of the captivation pins 344 to maintain the captivation pins 344 within the previously described and respective holes. Also included at the lower portion of the spreader beam 310 are opposed horizontally geometrically configured slots 348a and 348b having a profile in the shape of a shortened cross located at the generously sized junction of the side panel 316 and the bottom panel 320 and the generously sized junction of the side panel 318 and the

bottom panel 320, respectively. The slots 348a and 348b extend along the length of the spreader beam 310 and include vertically and horizontally oriented features for accommodation of components of the attachment assemblies 312a-312n, which are described with reference to PIG. 23.

[0088] PIG. 23 is an exploded view of the attachment assembly 312c. The attachment assemblies 312a-312n are of identical construction and function and each can be installed in suitable reversed orientation for suitable use for interfacing with the stackable electronic display panels 2a-2n, as required. Provision is made for quick and simple attachment of the stackable electronic display panels 2a-2n to the spreader beam 310 by the use of a positionable locking mechanism 350 in combination with a geometrically configured one-piece housing 352 and closely associated components thereof. The locking mechanism 350 includes a bar 354 having slide pins 356a and 356b secured thereto and extending perpendicularly therefrom, springs 358a and 358b aligned over and about the slide pins 356a and 356b between the bar 354 and pins 360a-360b extending through the slide pins 356a and 356b, a rotatable guide rod 362 extending through a body hole 364 of the bar 354, one end of which connects to a control knob 366, a stop pin 368 extending through the rotatable guide rod 362, and a latch pin 370 extending from one end of the rotatable guide rod 362. The one-piece housing 352 includes a top panel 372 having a plurality of holes 374a-374d extending therethrough for accommodation of bolts 376a-376d extending therethrough to engage threaded holes 378a-378b and 380a-380b extending through slide plates 382a and 382b which are spaced from the top panel 372. The one-piece housing 352 also includes a vertically oriented side panel 384, a vertically oriented side panel 386, a vertically oriented mid-panel 388, a vertically oriented short mid-panel 390, a bottom panel 392, and a horizontally aligned mid-panel 394. Various described panels form an open end upper box channel 396 and two open

end lower box channels 398 and 400. An open receptor slot 402 is formed by the top panel 372, the side panel 386, and the mid-panel 388 for accommodation of the connector plates 92 and 94 or connector plates 96 and 98. Sequences of body holes 404a-404n and 406a-406n are distributed through the side panel 384, the mid-panel 388, and the side panel 386 to accommodate the slide pins 356a and 356b. A hole 408 in the side panel 384 accommodates the rotatable guide rod 362 and stop pin 368 where the rotatable guide rod 362 positions the latch pin 370 in a catch slot 410 located in the bottom panel 392 in close proximity to the lower region of the side panel 384. The springs 358a and 358b are located in the lower box channel 400 in alignment over and about the slide pins 356a and 356b, as previously described.

[0089] PIG. 24 is a fragmentary front view in partial cross section showing the capture of the connector frameworks 14 of adjacent stackable electronic display panels in attachment assemblies 312b and 312c. The housing 352 of the attachment assembly 312b is shown in cross section with the slide pins 356a and 356b in the engaged mode. The slide pins 356a and 356b in the housing 352 of the attachment assembly 312c are shown in the disengaged mode. Use of the attachment assemblies 312b and 312c to couple the connector frameworks 14 is initiated as shown first with reference to the attachment assembly 312c. The locking mechanism 350 is actuated against the action of the springs 358a and 358b to withdraw the plain ends of the slide pins 356a and 356b from the receptor slot 402 to allow accommodation of the connector pins 92 and 94, and then the control knob 366 is rotated to position the rotatable guide rod 362 so that the latch pin 370 engages the catch slot 410, thereby readying the attachment assembly 312c for acceptance of the connector plates 92 and 94.

[0090] Full engagement of the connector plates 96 and 98 typifies the engagement of the other connector plates 92 and 94 with reference to the attachment assembly 312b shown in cross section. Upon suitable positioning of the connector plates 96 and 98 within the receptor slot 402, the control knob 366 is rotated to disengage the latch pin 370 from the catch slot 410, whereby the force of the springs 358a and 358b causes the plain ends of the slide pins 356a and 356b to enter the receptor slot 402 and the engagement holes 96a and 98a of the connector plates 96 and 98 and to be extended fully through the plurality of body holes 404a-404n to remain

forcibly engaged therein by the force of the springs 358a and 358b.

[0091] PIG. 25 is a bottom view of the attachment assembly 312a showing the relationship of the latch pin 370 of the outwardly positioned locking mechanism 350 to the catch slot 410 included on the bottom panel 392 of the housing 352. The latch pin 370 is shown in a nonengaged position parallel to the catch slot 410.

[0092] PIG. 26 is an exploded isometric view showing a screen 12 composed of stackable electronic display panels 2a-2n and mounting structure in the form of a floor stand 412 for mounting on a planar surface such as a floor, a stage member of a building, structure of a stage or stadium, or the like. The floor stand 412 utilizes a plurality of longitudinal supports 414a-414n which can be square or rectangular box tubing, a plurality of channels 416a-416n aligned over and about the plurality of longitudinal supports 414a-414n, a plurality of opposed interconnect sleeves 418a-418n having a plurality of spacers 419 extending laterally from each side of the channels 416a-416n, and a plurality of lateral supports 420a-420n which can be square or rectangular box tubing and which align over the interconnect sleeves 418a-418n and spacers 419. A plurality of holes are included in each component for connectivity between the components of the floor stand 412. A plurality of opposed holes 421 in sets and in vertical orientation are included at the ends of the longitudinal supports 414a-4l4n to accommodate fasteners for securing to a planar surface. A pair of one-piece connector plates 422a and 422b each having connector plate extensions 424 and 426 resembling the upper portions of the connector plates 92, 94, 96 and 98, including engagement holes, are suitably aligned and attached to the tops of the channels 416a-416n for connective accommodation by the lower structure of the connector frameworks 14 of the stackable electronic display panels 2a-2n utilizing the slide pins 190, 190a, 216 and 216a and associated components thereof. A plurality of locking pins 428 each provided with a tethered lock clip 430 are included for rapid mutual fixation of the

longitudinal supports 414a—414n, the channels 416a-416n, the lateral supports 420a-420n, and the like. Three lateral supports 420a-420n are shown, but only one lateral support 420b is required for use in support of the stackable electronic display panels 2a-2n, as illustrated. The remaining lateral supports 420a and 42On would be incorporated with additional channels 416a-416n and additional longitudinal supports 414a-414n for support of additional stackable electronic display panels.

[0093] FIG. 27 is an isometric view showing a plurality of connected connector frameworks 14 associated with mounting structure in the form of a ground stand 450. PIG. 28 is an exploded isometric view of the connector framework 14 and ground stand 450 shown in FIG. 27. For purposes of brevity and clarity, only the connector frameworks 14 which are included in the stackable electronic display panels 2a-2n are shown in each figure. The ground stand 450 includes major structures consisting of a support frame 452 and a pair of similarly constructed longitudinal support assemblies 454a-454b removably attached to the support frame 452. The support frame 452 includes opposed mirror image-like angle members 456a and 456b, front and rear lateral supports 460a and 460b preferably in the form of box tubing secured to and extending transversely between the angle members 456a and 456b, a longitudinal support 462 preferably in the form of box tubing secured to and extending between the lateral supports 460a and 460b, a spacer plate 464 secured to a portion of the top of the lateral support 460a and to a portion of the longitudinal support 462, and a plurality of one-piece connector plates 465a-465n. The plurality of one-piece connector plates 465a-465n, each having connector plate extensions 466 and 468 resembling the upper portion of the connector plates 92, 94, 96 and 98, including engagement holes, are suitably aligned and attached to the tops of the angle members 456a-456b and the spacer plate 464 for connective accommodation by the lower structure of the connector frameworks 14 of the stackable electronic display panels 2a-2n utilizing the slide pins 190, 190a, 216 and 216a and associated components thereof in the manner previously described. Angled slots 470 and 472 are included at the front

vertical portions of the angle members 456a and 456b, respectively, for side-by-side accommodation and joining of additional longitudinal support assemblies 454a and 454b juxtaposed thereto, as described later in detail. [0094] The longitudinal support assemblies 454a and 454b are identical in construction and as such only the longitudinal support assembly 454a is now described. The longitudinal support assembly 454a includes a longitudinal support 474, preferably in the form of a box tube, having a plurality of opposed holes 476a and 476b, in sets, along the vertical portions. A connector fixture 478, as later described, is located at the front portion of the longitudinal support 474, and a stop cap 480 is located on the rear portion of the longitudinal support 474 to engage a plurality of guide/stop bars 482a-482n (PIG.29) located on one end of a longitudinal support extension 484 which is telescopingly engaged by the longitudinal support 474. The longitudinal support extension 484 includes a plurality of opposed holes 485a-485n, in sets, along the vertical portions. A vertically oriented bracket 486 extends from the rear and top surface of the longitudinal support extension 484, and opposed horizontally oriented brackets 488a and 488b extend from the rear and side surfaces of the longitudinal support extension 484 for the attachment of optional support structure. The brackets 486 and 488a and 488b include holes for attachment of other components, as described later in detail. A pad 490 suitable for ground contact is located on the bottom of the rear and lower surface of the longitudinal support extension 484. A plurality of locking pins 492 each provided with a tethered lock clip 494 are used for several purposes. One purpose is for rapid final fixation of the longitudinal

support assemblies 454a and 454b to the support frame 452 using opposed holes 476a in the longitudinal support assemblies 454a and 454b and holes 496 and 498 at the rear portions of the angle members 456a and 456b, respectively. Another purpose is for rapid positional fixation of the longitudinal support extensions 484 within the longitudinal supports 474 using opposed holes 476b in the longitudinal supports 474 and opposed holes 485a-485n in the longitudinal support extensions 484. The longitudinal support extensions 484 can be retracted (FIG. 27) into the longitudinal supports 474, as desired, depending upon the extent of the support required for different quantities of stackable electronic display panels 2a-2n.

[0095] PIG. 29 is a partially exploded view of the longitudinal support assembly 454a. The stop cap 480 is welded to one end of the longitudinal support 474 and is shown in sliding engagement over and about one end of the longitudinal support extension 484. The plurality of guide/stop bars 482a-482n are located and secured to one end of the longitudinal support extension 484 and function as guides when the longitudinal support extension 484 is slidably positioned within the interior of the longitudinal support 474. The ends of the guide/stop bars 482a-482n also function as stops to impinge the stop cap 480, thereby ensuring that the longitudinal support extension 484 remains engaged within a portion of the longitudinal support 474 at all times. Such engagement keeps the components conveniently attached to one another so that components do not get misplaced. The connector fixture 478 located at the front portion of the longitudinal support 474 includes a rod 500 extending through and beyond the opposed vertical sides of the longitudinal support 474 at one end of the longitudinal support 474, washers 502 aligned over and about the rod 500 and welded to the opposed vertical sides of the longitudinal support 474 and to the rod 500, and washers 504 smaller than washers 502 and spaced from the washers 502 along and about the rod 500 and welded to the ends of the rod 500 to include an annular space 506 along the rod 500 between the respective washers 502 and 504. The exposed annular space 506 of the connector fixture 478 on the outside of the longitudinal support assembly 454a, shown in PIG. 27, and the corresponding exposed annular space 506 of the connector fixture 478 (not shown) on the outside of the longitudinal support assembly 454b can be incorporated to facilitate side-by-side accommodation and

joining of additional support frames 452 and additional longitudinal support assemblies, such as longitudinal support assembly 454n, juxtaposed thereto somewhat in a manner illustrated in PIG. 30 when accommodation of more stackable electronic display panels 2a-2n is required. The annular spaces 506 are incorporated to engage the angled slots 470 and 472 of adjacent angle members 456a and 456b in concert with locking pins 492 extending through holes 476a of the longitudinal support assemblies 454a or 454b and the holes 496 or 498 of the angle members 456a or 456b, respectively.

[0096] PIG. 30 is an isometric view of connected connector frameworks 14 a ground stand 450a incorporating the features of the ground stand 450 and including additional structure for support of a large number of stackable electronic display panels 2a-2n of which only the connector frameworks 14 thereof are shown. A plurality of like bracket fixtures 508a-508n, including opposed brackets 510a and 510b, connectingly accommodate opposing ends of horizontally aligned lateral supports 514a-514n, each preferably in the form of a box tube, and suitably secure to various threaded holes 171, 173, 167 and 169 of the uppermost connector frameworks 14. Slotted connector tabs 516 on the lateral supports 514a-514n are used to suitably secure the mid-portion of the lateral supports 514a-514n to various threaded holes 171 and 167 of the uppermost connector frameworks 14. Additionally, angled brackets 518, being part of and extending downwardly from the bracket fixtures 508a-508n, connectingly accommodate the upper ends of support braces 520a-520n. The lower ends of the support braces 520a-520n include threaded adjusters 522a-522n suitably connected, such as by the use of clevis and clevis pin fasteners 524a-524n or other suitable fasteners, to the brackets 486 at the ends of the longitudinal support assemblies 454a-454n. Brackets 488a and 488b connectingly accommodate opposing ends of horizontally aligned lateral supports 526a-526n each of which preferably is in the form of a box tube. The bracket fixtures 508a-508n, including brackets 510a and 510b and the angled brackets 518, as well as other parts of the bracket fixtures 508a-508n and the brackets 486 and 488a and 488b, include holes for connection to the lateral supports 514a-5l4n, the lateral

supports 526a-526n, and the support braces 520a-520n using locking pins 492 or other suitable hardware.

SYSTEM LAYOUT OPTIONS

[0097] The flexibility engineered into the modular display system constituting the present invention gives users the capability to use a single screen or multiple screens. As such, depending on how many different screens a user wants to break his system into, different numbers of components are required. The following examples exhibited by FIGS. 31-34 show how a modular display system comprising 96 panels can be set up in different ways, depending on the user's needs and the desired system performance.

[0098] PIG. 31 is a plan view of a layout option of a modular display system in which a single screen 12a composed of ninety-six stackable electronic display panels 2a-2n is utilized. This option utilizing the 96-panel screen includes 96 LED display modules 16 affixed to 96 connector frames 14, which make up the 96 stackable electronic display panels 2a-2n; one data distributor box 6 with cabling; one 36KW transportable power rack 7 with cabling (150 feet maximum) ; one control rack (not shown) including a computer controller 4 such as a Daktronics V-Tour™ controller, a primary video processor 5 such as a Daktronics V-Link® video processor, and a backup video processor (not shown) ; twelve panel/connector frame shipping cases (not shown) ; and two utility cases (not shown) for cabling.

[0099] PIG. 32 is a plan view of another layout option of a modular display system involving two screens 12b and 12c each composed of forty-eight stackable electronic display panels 2a-2n, the two screens 12b and 12c being controlled by individual computer controllers 4. This two 48-panel screen option includes 96 LED display modules 16 affixed to 96 connector

frames 14; two data distributor boxes 6 with cabling; two transportable 18KW power racks 7 with cabling (150 feet maximum) ; two control racks (not shown) each including a computer controller 4 such as a Daktronics V-Tour™ controller, a primary video processor 5 such as a Daktronics V-Link® video processor, and a backup video processor (not shown) ; twelve panel/connector frame shipping cases (not shown) ; and four utility cases (not shown) for cabling. [0100] PIG. 33 is a plan view of yet another layout option of a modular display system wherein four screens 12d, 12e, 12f and 12g each composed of twenty-four stackable electronic display panels 2a-2n are provided, each screen 12d, 12e, 12f and 12g being operated by a separate computer controller 4. This four 24-panel screen option includes 96 LED display modules 16 affixed to 96 connector frames 14; four data distributor boxes 6 with cabling; four transportable 12KW power racks 7 with cabling (150 feet maximum) ; four control racks (not shown) each including a computer controller 4 such as a Daktronics V-Tour™ controller, a primary video processor 5 such as a Daktronics V-Link® video processor, and a backup video processor (not shown) ; twelve panel/connector frame shipping cases (not shown) ; and six utility cases (not shown) for cabling.

[0101] PIG. 34 is a plan view of still another layout option of a modular display system involving four screens 12d, 12e, 12f and 12g each composed of twenty-four stackable electronic display panels 2a-2n, all four screens 12d, 12e, 12f and 12g in this layout option being controlled by a common computer controller 4. This four 24-panel screen option includes 96 LED display modules 16 affixed to 96 connector frames 14; four data distributor

boxes 6 with cabling; four transportable 12KW power racks 7 cabling (150 feet maximum) ; one control rack (not shown) including a computer controller 4 such as a Daktronics V-Tour™ controller, a primary video processor 5 such as a Daktronics V-Link® video processor, and a backup video processor (not shown) ; twelve panel/connector frame shipping cases (not shown) ; and six utility cases (not shown) for cabling.

ADDITIONAL FEATURES A. DISPLAY PANEL DESIGN [0102] Durable, Lightweight and Water Resistant.

Each stackable electronic display panel 2a-2n is designed with lightness, ruggedness and water resistance in mind. The result is an IP-65 rated, strong, resilient, weatherized stackable electronic display panel that weighs only 7 kg (15.40 Ib.) and measures approximately a half meter. The combined features make the stackable electronic display panels 2a-2n road-ready and equipped for the quickest possible setup in any environment.

[0103] Low Heat and Low Noise. Efficient power structure minimizes heat build-up within the stackable electronic display panels 2a-2n, maximizing internal electronics lifetime. In addition, the ultra-efficient electronics use a rear heat sink 50 for ventilation thereby creating minimal noise, and making the stackable electronic display panels 2a-2n virtually silent during operation. [0104] Serviceability. The stackable electronic display panels 2a-2n are readily serviceable from either the front or the rear. A hex wrench fits inside from the front or the rear and releases the LED display module latching system 52 that holds a stackable electronic display panel in place to a connector framework 14. The quick release makes changing out stackable electronic display panels 2a-2n easy and fast.

[0105] Design Flexibility. The modular display system gives designers the flexibility to create innovative video displays. The approximately half-meter by half-meter stackable electronic display panels 2a-2n shape into virtually any configuration, whether traditional or artistic. The stackable electronic display

panels 2a-2n can use rear support structure in the form of the described connector framework 14 or custom structures can be designed and built to support the stackable electronic display panels 2a-2n. [0106] Cast Aluminum Structure. Each connector framework 14 is a lightweight, durable, cast aluminum structure to provide support for the affixed LED display module 16. Weighing 20 Ib. (9.1 kg.) alone or 35 Ib. (16.1 kg.) when combined with the LED display module 16, the connector framework 14 is capable of hanging up to 22 stackable electronic display panels, creating displays 36 feet (11 m.) in height. When mounting from the ground, the connector framework 14 can support up to 10 panels high using ground stand mounting structure, creating displays up to 16 feet (5 m.) high.

[0107] Express Assembly and Superior Seam Control. Each connector framework 14 includes four slide pins that interlock with the connector plates on the connector framework 14 below to thereby secure the connector frameworks in place with one another. Adjustable side latch assemblies actively draw the panels together vertically eliminating seams between panels. Thumbwheel adjusters on the rear of each connector framework 14 adjust horizontal tolerances and guarantee a tight fit and continuous look.

[0108] Mounting Flexibility. In addition to the cast aluminum connector frameworks 14, a variety of other structure options are available. Large scale panel frames can be used for quicker setup of larger displays and cabinet-style frames can be used for permanent installations.

B. SIGNAL COMMUNICATIONS

[0109] Redundant Signal. Redundant signal masks signal failures and maximizes display uptime. The proactive feature ensures against the unexpected, keeping imagery constant and unbroken on a display. The innovative, redundant signal design passes image and diagnostic data from display panel to display panel in two directions. If a signal interruption occurs from one direction, the affected display panels automatically switch to the backup signal and a report of the situation is then given back to the computer controller.

[0110] Signal Connectors and Cables. An industry standard, rugged, quick release signal connector guarantees a watertight bond between stackable electronic display panels. An audible, positive-lock click indicates a connector fits snugly in place, keeping the elements out. If a supplied signal cable becomes damaged, it can be temporarily replaced with a standard network cable available from almost any electronics store. This quick fix solution eliminates waiting on manufacturer-supplied cables to keep the show going.

[0111] Operational Status Indicators. Operational status LEDs on the backside of an LED display module give a quick visual indication of the LED display module's operational status. The signal indicators turn off when the data path to the LED display modules is interrupted, alerting support personnel that further examination is required.

C. POWER DELIVERY

[0112] Remote Power System. To keep noise away from the display, a remote transportable power delivery system or rack that can be located up to 150 feet (45.7 meters) away from the display is provided. The external remote power delivery system removes the power supplies from the display, resulting in a drastically lighter display panel and reducing heat for extended uniformity. [0113] Power Connectors. An industry standard, rugged, quick release power connector guarantees a watertight bond between display panels. An audible, positive-lock click indicates a connector fits snugly in place, keeping the elements out. [0114] Hot-Swappable Power. The transportable power rack can be located up 150 feet (45.7 meters) away from the display and allows power units inside the rack to be hot-swapped for one another, keeping a constant supply of power to the display panels. The power rack contains several power units that distribute the power evenly to the display panels. Should one power unit fail, the remaining units pick up the power load and keep the display running. An indicator alerts support personnel of a failed power unit, allowing them to replace the unit for a new one without shutting off power to the display panels.

[0115] Operational Status Indicators. Operational status LEDs on the backsides of the LED display modules give a quick visual indication of the operational status of the LED display modules. The power indicator illuminates when the LED display module receives power, signaling to support personnel that the LED display module works correctly.

116] PARTS LIST modular display system a-n stackable electronic display panel a-n suspension mounts computer controller video processor data distributor transportable power rack fiberoptic cable

Cat-5 cable power cable screen a-g screens connector framework

LED display module support panel rear enclosure panel handle lower LED display assembly upper LED display assembly cable circuit board

EMI shield gasket frame weather seal gasket anti-EMI coated edge anti-EMI tape

LED panel louver panel plate anti-EMI gasket weather seal gasket heat sink

LED display module latching system framework actuator mechanism a-b actuator arms a-b latch housings a-fc> pivotable latches signal receptacle signal receptacle power receptacle diagnostic display side panel catch side panel catch top channel

78 bottom channel

80 alignment post

82 alignment hole

84 planar face

86 planar face

88 planar face

90 planar face

92 connector plate

92a engagement hole

94 connector plate

94a engagement hole

96 connector plate

96a engagement hole

98 connector plate

98a engagement hole

100 front connector plate receptor

102 front connector plate receptor

104 connector assembly

106 connector assembly

108 rear connector plate receptor

110 rear connector plate receptor

112 slide pin housing

114 slide pin housing

116 handle/cable management bracket

118 slot

120 slot

122 front connector plate mounting slot

124 back connector plate mounting slot

126 front connector plate mounting slot

128 back connector plate mounting slot

130 front connector plate receptor slot

132 front connector plate receptor slot

134 rear connector plate receptor slot

136 rear connector plate receptor slot

138 front spring-loaded slide pin assembly

140 rear spring-loaded slide pin assembly

142 front spring-loaded slide pin assembly

144 rear spring-loaded slide pin assembly

146 side latch assembly

148 side latch assembly

150 segmented compartment

152 segmented compartment

154 side latch keeper assembly

156 side latch keeper assembly

158 segmented compartment

160 segmented compartment

162a-c spring-loaded ball detents

164a-c detent holes

166a-b spring-loaded ball detents

167 threaded hole

168 tongue

169 threaded hole

170 groove

171 threaded hole

172 threaded shaft

173 threaded hole

174 thumbwheel adjuster

176 hole

178 nut

180 nut

182 recess

184 body hole

186 threaded hole

188 interrupted slot

189 hole

190 slide pin

190a slide pin

192 actuator shaft

192a actuator shaft

194 knob

194a knob

196 pin

196a pin

198 spring

198a spring

200 panel

202 arcuate surface

204 access slot

206 panel

208 arcuate surface

210 slot

212 inboard hole

214 outboard hole

216 slide pin

216a slide pin

218 actuator shaft

218a actuator shaft

220 knob

220a knob

222 pin

222a pin

224 spring

224a spring

226 panel

228a-b arcuate surfaces

230 front access slot

232 rear access slot

234 first intermediate panel

236 hole

238 second intermediate panel

240 hole

242 panel

244 hole

246 bracket

248 operating shaft

250 tool receptor

252 side

254 side

256 latch

258 indicator tab

260 slot

262 notched panel

264 guide panel

266 guide panel

268 access hole

270 bracket

272 side

274 side

276 operating shaft

278 hexagonal exterior

280 cam

282 hexagonal hole

284 body hole

285 tool receptor

286 spring clip

288 spring

290 annular shoulder

292 groove

294 notched panel

296 guide panel

298 guide panel

300 access hole

302 bevel

304 bevel

306 bevel

308 bevel

310 spreader beam

312a-n attachment assemblies

314 interconnect sleeve

316 side panel

318 side panel

320 bottom panel

322 panel

324a-n holes

326a-n holes

328a-n holes

330 side panel

332 side panel

334 bottom panel

336a-b pins

338a-b slots

34Oa-n holes

342a-n holes

344 captivation pin

346 keeper pin

348a-b slots

350 locking mechanism

352 housing

354 bar

356a-b slide pins

358a-b springs

360a-b pins

362 rotatable guide rod

364 body hole

366 control knob

368 stop pin

370 latch pin

372 top panel

374a-d holes

376a-d bolts

378a-b holes

380a-b holes

382a-b slide plates

384 side panel

386 side panel

388 mid-panel

390 short mid-panel

392 bottom panel

394 mid-panel

396 upper box channel

398 lower box channel

400 lower box channel

402 receptor slot

404a-n body holes

406a-n body holes

408 hole

410 catch slot

412 floor stand

414a-n longitudinal supports

416a-n channels

418a-n interconnect sleeves

419 spacer

420a-n lateral supports

421 hole

422a-b connector plates

424 connector plate extension

426 connector plate extension

428 locking pin

430 lock clip

450 ground stand

450a ground stand

452 support frame

454a-n longitudinal support assemblies

456a-b angle members

460a-b lateral supports

462 longitudinal support

464 spacer plate

465a-n connector plates

466 connector plate extension

468 connector plate extension

470 angled slot

472 angled slot

474 longitudinal support

476a-b holes

478 connector fixture

480 stop cap

482a-n guide/stop bars

484 longitudinal support extension

485a-n holes

486 bracket

488a-b brackets

490 pad

492 locking pin

494 lock clip

496 hole

498 hole

500 rod

502 washer

504 washer

506 annular space

508a-n bracket fixtures

510a-b brackets

514a-n lateral supports

516 slotted connector tab

518 angled bracket

520a-n support braces

522a-n threaded adjusters

524a-n clevis and clevis pin fasteners

526a-n lateral supports

[0117] Various modifications can be made to the present invention without departing from the apparent scope hereof. IT IS CLAIMED: