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Title:
TAMPER RESISTANT LUMINAIRE
Document Type and Number:
WIPO Patent Application WO/2016/074007
Kind Code:
A2
Abstract:
This invention relates to a tamper resistant luminaire. More specifically, the invention relates to a tamper resistant luminaire for prison environments where access to the inside of the luminaire is restricted to authorised personal only. The tammper resistant luminaire includes a light source, a mounting bracket operatively fastenable to a mounting surface and a housing for housing the liht source. The housing comprises a mounting face defining a mounting slot having a closed end and an oppoiste open end for slidably engaging the mounting bracket thereby to capture It therein and mount the housing to the mounting surface. The housing further comprises a first open end, coinciding with the open end of the slot, and an opposing second closed end defiing therein a tool receiving aperture. An end cap is removably fastenable to the first open end of the housing by a fastener thereby to seal the housing against tampering and dose the open end of the mounting slot so to retain the housing on the mounting bracket. The fastener Is located substantially at or near the first open end of the housing and Is engagable from a second opposite end of the housing by a specialized tool operatively extending through the tool receiving aperture defined In the second closed end such that in use, access into the housing other than by way of making use of the specialized tool is restricted.

Inventors:
OLIVIER, Gregory Terence (522 Bedford, Cnr van der Linde & Smith Roads, Bedfordview, ZA)
GORDON, Spencer, Patrick (120 Kingfisher Avenue, Elspark, Germiston 1401, ZA)
YATES, Alan Terrance (14 Monte Carlo, Monte Carlo Flats Morton Crescent, Parkdene 1459, ZA)
Application Number:
ZA2015/000066
Publication Date:
May 12, 2016
Filing Date:
November 03, 2015
Export Citation:
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Assignee:
WATT IDEAS (PTY) LTD (7 Graphite Street, Driehoek, Germiston 1401, ZA)
Attorney, Agent or Firm:
SIBANDA & ZANTWIJK (PO Box 1615, Houghton 2041,Johannesburg, Gauteng, ZA)
Download PDF:
Claims:
Claims

1. A tamper resistant !uminaire including: a light source; a mounting bracket cperativeiy fastenable to a mounting surface; a housing for housing the Sight source, the housing comprising; one or more dtffuser panels through which light from the iight source is dispersabie; a mounting face defining therein a mounting slot having a closed end and an opposite open end for slidab!y engaging the mounting bracket thereby to capture the mounting face on the mounting bracket for cperativeiy mounting the housing to the mounting surface; a first open end and an opposing second closed end spaced apart from one another across the mounting face, wherein the first open end of the housing is located substantially at or near the open end of the mounting slot, and further wherein the second closed end is located closer to the closed end of the mounting slot, the second dosed end defining therein a tool receiving aperture; and an end cap removably fastenable to the first open end of the housing by a fastener thereby to seal the housing against tampering and close the open end of the mounting slot so to retain the housing on the mounting bracket, the fastener being located substantially at or near the first open end of the housing and being engagab!e from a second opposite end of the housing by a specialized too! operatively extending through the tool receiving aperture defined in the second closed end; such that in use, access into the housing other than by way of making use of the specialized tool is restricted. 2. A tamper resistant luminaire according to claim 1 , wherein the housing is elongate with the first open end and the second closed end thereof spaced across a major dimension of the elongate housing, thereby requiring the speciaiized tool to have a length at least the same or greater than the major dimension of the elongate housing. 3. A tamper resistant luminaire according to claim 1 or claim 2 including one or more guide members for guiding an engaging end of the speciaiized too! into engagement with the fastener, the one or more guide members being located within the housing between the too! receiving aperture defined in the second dosed end and the fastener located substantially at or near the first open end. 4. A tamper resistant luminaire according to claim 3: wherein the one or more guide members is an elongate tubular guide member fixed into the housing and having: a first end located at or near the first open end of the housing: and a second open end located near the second closed end of the housing; the second end of the elongate tubular guide member being set back from the second dosed end Into the housing thereby to define a space between the tool receiving aperture defined in the second closed end and the second open end of the elongate tubuiar member for in use causing contraband pushed through the too! receiving aperture to fall onto the diffuser where it can be seen, instead of being concealed in the elongate tubular guide member. 5. A tamper resistant luminaire according to claim 4 inc!uding a sealing member for sealing the too! receiving aperture defined in the second dosed end when not in use, thereby to further restrict access into the housing. 6. A tamper resistant luminaire according to claim 5, wherein the sealing member is a barrel lock insertab!e into the too! receiving aperture.

7. A tamper resistant luminaire according to claim 6, wherein the light source is a plurality of light emitting diodes (LED's). 8. A tamper resistant !uminaire according to ciaim 7, wherein the mounting bracket is elongate and operaiively fastenabie to the mounting surface thereby to define a gap, between engaging portions ihereof and the mounting surface, into which the mounting face of the housing is s!idabiy receivable, the engaging portions of the mounting bracket having a width greater than a width of the slot thereby to capture the engaging portions of the mounting bracket in the housing. 9. A tamper resistant luminaire according to claim 8, wherein the mounting bracket is substantially T-shaped.

10. A tamper resistant luminaire according to ciaim 9, wherein the elongate housing has a substantially rectangular cross section made up of the mounting face and an opposing dlffuser face, a pair of opposing sidewails each extending between the mounting and diffuser faces, the removably fastenabie end cap for closing the first end of the housing and the closed second end, the closed second end being integral with the housing or a permanent fixed end cap.

11. A tamper resistant luminaire according to claim 10, wherein the diffuser face defines an aperture such that the remaining portions thereof form a peripheral support lip on which the diffuser panel is supported and fixed. 12. A tamper resistant luminaire according to ciaim 11 including a divider panel fixed within the housing and being substantially parallel to the mounting and diffuser faces thereby to divide the housing into a first compartment nearer the diffuser face for housing the light source therein and a second compartment nearer the mounting face for housing at least the guide members and fastener therein.

13. A tamper resistant luminaire according to claim 12, wherein light ballast is housed within the second compartment, or remotely from the housing.

Description:
TAMPER RESISTANT LUiV!iNA!RE

BACKGROUND OF THE INVENTION

THIS invention relates to a tamper resistant iuminaire. More specifically, the invention relates to a tamper resistant iuminaire for prison environments where access to the inside of the iuminaire is restricted to authorised personal only.

It is common knowledge that the large majority of existing iuminaires currently made use of in prison environments are vulnerable to their internals becoming accessible to prisoners.

Prisoners access the internals of these existing Iuminaires for many reasons, but mainiy for the purposes of accessing electricity (i.e. using a wired up razor blade for boiling water), hiding contraband and/or scavenging parts to manufacture dangerous weapons, all of which are undesirable to effectively controlling the safe operation of a prison.

Typically, the existing iuminaires are vulnerable to becoming accessible due to the fasteners used to assemble these Iuminaires or to mount them being accessible to the prisoners and engageable with make-shift tools. it is therefore an object of the present invention to provide a tamper resistant iuminaire for prison or other detention centre applications that addresses the access problems of existing iuminaires currently available by repiacing assemblage fasteners with weiding and positioning mounting fasteners within Inaccessible locations within the housing. SUMMARY OF THE INVENTION

According to the invention there is provided a tamper resistant iuminaire including: a light source; a mounting bracket operative;;/ fastenabie to a mounting surface; a housing for housing the light source, the housing comprising: one or more diffuser panels through which light from the !ight source is dispersabie; a mounting face defining therein a mounting slot having a dosed end and an opposite open end for siidabiy engaging the mounting bracket thereby to capture the mounting face on the mounting bracket for operativeiy mounting the housing to the mounting surface; a first open end and an opposing second closed end spaced apart from one another across the mounting face, wherein the first open end of the housing is located substantially at or near the open end of the mounting slot, and further wherein the second closed end is located closer to the closed end of the mounting slot, the second dosed end defining therein a tool receiving aperture; and an end cap removably fastenabie to the first open end of the housing by a fastener thereby to seal the housing against tampering and dose the open end of the mounting slot so to retain the housing on the mounting bracket, the fastener being located substantially at or near the first open end of the housing and being engagable from a second opposite end of the housing by a specialized tool operativeiy extending through the tool receiving aperture defined in the second dosed end; such that in use, access into the housing other than by way of making use of the specialized too! is restricted.

Generally, the housing is elongate with the first open end and the second dosed end thereof spaced across a major dimension of the elongate housing, thereby requiring the specialized tool to have a length at least the same or greater than the major dimension of the elongate housing.

The tamper resistant luminaire may include one or more guide members for guiding an engaging end of the specialized tool into engagement with the fastener, the one or more guide members being located within the housing between the too! receiving aperture defined in the second closed end and the fastener located substantially at or near the first open end. Typically, the one or more guide members is an elongate tubular guide member fixed into the housing and having: a first end located at or near the first open end of the housing; and a second open end located near the second closed end of the housing.

The second open end of the elongate tubular guide member is preferably set back from the second closed end into the housing thereby to define a space between the tool receiving aperture defined in the second closed end and the second open end of the elongate tubular member for in use causing contraband pushed through the too! receiving aperture to fail onto the diffuser where it can be seen, instead of being concealed in the elongate tubular guide member.

Furthermore, the tamper resistant luminaire may include a sealing member for sealing the tool receiving aperture defined in the second closed end when not in use, thereby to further restrict access into the housing. Generally, the sealing member is a barrel lock insertable into the tool receiving aperture.

Typically, the light source is a plurality of light emitting diodes (LED's).

The mounting bracket may be elongate and operativeiy fastenable to the mounting surface (i.e. a celling) thereby to define a gap, between engaging portions thereof and the mounting surface, into which the mounting face of the housing is sl!dabiy receivable

Preferably, the engaging portions of the mounting bracket have a width greater than a width of the slot thereby to capture the engaging portions of the mounting bracket in the housing. More preferably, the mounting bracket is substantially T-shaped.

The elongate housing may have a substantially rectangular cross section made up of the mounting face and an opposing diffuser face, a pair of opposing sidewal!s each extending between the mounting and diffuser faces, the removably fastenabie end cap for dosing the first end of the housing and the closed second end, the closed second end being integral with the housing or a permanent fixed end cap.

Generally, the diffuser face defines an aperture such that the remaining portions thereof form a peripheral support lip on which the diffuser panel is supported and fixed.

Furthermore, a divider panel may be fixed within the housing and being substantially parallel to the mounting and diffuser faces thereby to divide the housing into a first compartment nearer the diffuser face for housing the light source therein and a second compartment nearer the mounting face for housing at least the guide members and fastener therein.

Light ballast, for regulating current supply to the light source, may be housed within the second compartment, or remotely from the housing.

Typically, the fastener is a bolt hidden from view within the housing and retained therein by a retaining formation located at or near the first end of the elongate tubular guide member. Preferably, the bolt has a head end pointed towards the second closed end of the housing and a shank end pointed towards the first open end of the housing, the head end thereof being engageable with the specialized tool, with the shank end thereof being engageable with a fastening bore defined in the removably fastenabie end cap. More preferably, the removably fasienabie end cap or the housing comprises an alignment pin and the other of the removably fasienabie end cap or the housing defines an alignment pin receiving aperture for, together with peripheral edges thereof, aligning the removably fastenabie end cap into position into the first open end of the housing.

Generally, the removably fastenabie end cap comprises a slot engaging finger for, and when fastened into the first open end of the housing, dosing the slot such that the length of the slot engaging with the mounting bracket is substantially the same or slightly smaller than the length of the engaging portion of the mounting bracket.

Typically, the head end of the boit and the engaging end of the specialized tool define customized correspondingly engageabie engaging formations. Preferably, the specialized tool is in the form of a T-bar wrench having the engaging end at one end and a T-shaped handle at an opposite end. More preferably, the specialized tool comprises a hinge substantially mid span between the handle end and the engaging end.

With the main application of the tamper resistant iuminalre of the present invention being within prison environments, it is envisaged that the housing thereof and the diffuser panel be made of constructed robustly, making use of strong material and/or thick gauge steei.

Preferably, the housing is made from welded steel sections with a thickness between 1 and 3 millimetres. More preferably, the steel sections are about 2 millimetres think. Most preferably, the diffuser panel is made from high impact resistant polycarbonate.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described in more detail, by way of example only, with reference to the accompanying drawings in which Figure 1 is a first exploded perspective view of a tamper resistant iuminaire in accordance with the present invention, prior to mounting to a mounting surface in the form of a ceiling; Figure 2 is a first perspective view of the tamper resistant !uminaire of figure 1 mounted to the cei!ing in a mounted position;

Figure 3 is a second perspective view of the tamper resistant Iuminaire of figure

1;

Figure 4 is a cross-sectional front view on line A-A of figure 3 of the tamper resistant iuminaire illustrating hew a specialized too! is engsgeabie therewith to mount the iuminaire to the ceiiing.

DETAiLED DESCRIPTION OF THE DRAWINGS

A tamper resistant Iuminaire according to a preferred embodiment of the invention Is designated generally in figure 1 with reference numeral 10. The tamper resistant iuminaire 10 comprises a mounting bracket 12 and an elongate housing 14.

The mounting bracket 12 is fastenable to a mounting surface, such as a ceiling 100, with a plurality of fasteners 16 so as to define a gap between the ceiling 100 and at least engaging portions, i.e. the peripheral edges 18, of the mounting bracket 12. it will be appreciated that the mounting bracket 12 has a substantially T-shaped cross section across its width "W-i".

The housing 14 may take many different shapes, but in the preferred illustrated embodiment has a substantially rectangular cross section across Its width "VV 2 " and is made up of a mounting face 20 and an opposing diffuser face 22, a pair of opposing sidewalis 24, 26 extending between the mounting and diffuser faces 20, 22, a first open end 28 that can be closed off by a removably fastenable end cap 30 and an opposite closed second end 32. The tamper resistant !uminaire 10 includes a Sight source 34, in the form of a plurality of light emitting diodes {LED's}, viewable through a partial cut-away through a diffuser pane! 36 in figure 2. !t will be appreciated that although the accompanying illustrations show the light source 34 in the form of LED's, any other light source (for example, light bulbs, florescent tubes) may be used.

The diffuser face 22 of the housing 14 defines a substantially sized aperture therein such that the remaining portions thereof form a peripheral iip 22A-D on which the diffuser panel 36 is supported and fixed. It will be appreciated that in use, the diffuser panel disperses the light from the light source evenly therethrough.

With reference now also to figure 3, the mounting face 20 of the housing 14 defines a mounting slot 38 therein having a closed end 40 and an opposite open end 42 for s!idably engaging the mounting bracket 12 thereby to capture the mounting face 20 on the mounting bracket 12 with the gap defined between itself and the ceiling 100 as previously described.

With the width "W-f' of the mounting bracket 12 being greater than the width "W 3 " of the slot, the engaging portions 18 of the mounting bracket 12 are captured within the housing 14 such that the housing 14 Is operative!y mountable to the ceiling 100 in a mounted position as depicted in figure 2.

The first open end 28 and the opposing second dosed end 32 are spaced apart from one another across a major dimension "D" of the eiongate housing 14, with the first open end 28 of the housing 14 located substantially at or near the open end 42 of the mounting slot 38, and with the second closed end 32 of the housing 14 located closer to the closed end 40 of the mounting siot 38. With particular reference to figure 2, the second closed end 32 of the housing 14 defines a too! receiving aperture 44 therein. The removably fastenabie end cap 30 is removably fastenabie to the first open end 28 of the housing 14 by a fastener 46, typically in the form of a fastening bolt, thereby to seal the housing 14 against tampering and close the open end 42 of the mounting slot 38 so to retain the housing 14 on the mounting bracket 12. With reference now also to figure 4, the fastening bolt 46 is located substantially at or near the first open end 28 of the housing 14 and engagable from a second opposite end 32 of the housing 14 by a specialized too! 48 operative?;/ extending through the tool receiving aperture 44 defined in the second dosed end 32. in this manner, access into the housing 14 other than by way of making use of the specialized tool 4S is restricted.

The tamper resistant iuminaire 10 further includes an eiongate tubuiar guide member 50 for guiding an engaging end 48A of the specialized tool 48 into engagement with the fastening bolt 48, the elongate tubuiar guide member 50 being located within the housing 14 between the too! receiving aperture 44 defined in the second closed end 32 and the fastening bolt 46 !ocated substantially at or near the first open end 28.

The elongate tubuiar guide member 50 is fixed into the housing 14 and comprises a first end 5QA located at or near the first open end 28 of the housing 14 and a second open end 50B located near the second closed end 32 of the housing 14.

Preferably, the second open end 50B of the elongate tubuiar guide member 50 is preferably set back from the second closed end 32 into the housing thereby to define a space : 'S" between the tcoi receiving aperture 44 defined in the second closed end 32 and the second open end 50B of the elongate tubular guide member 50 for in use causing contraband pushed through the tool receiving aperture 44 to fali onto the diffuser 36 where it can be seen, instead of being concealed in the elongate tubular guide member 50. it will be appreciated that the elongate tubular guide member 50 may be substituted by other forms of guide members, for example, a plurality of guide rings spaced apart from one another between the second closed end 32 and the first open end 28 of the housing 14. The fastening bolt 46 is a bolt cperatively hidden from view within the housing 14 and retained therein by a retaining formation 52 located at or near the first end of the elongate tubuiar guide member 50. The fastening bolt 4S has a head end pointed towards the second dosed end 32 of the housing 14 and a shank end pointed towards the first open end 23 of the housing 14, the head end thereof being engageab!e with the specialized tool, with the shank end thereof being engageabie with a fastening bore 54 defined in the removably fastenabie end cap 30.

The head end of the fastening boit 46 and the engaging end 48Aof the specialized tool 48 define customized correspondingly engageabie engaging formations, such that only a matched pair of fastening bo!t 46 and specialized tool 48 may be used to loosen and/or tighten the fastening boit 46 relative to the removably fastenabie end cap 30.

The specialized too! is in the form of a T-bar wrench having the engaging end 48A thereof at one end and a T-shaped handle 483 at an opposite end. Furthermore, the specialized too! 48 comprises a hinge 48C substantially mid span between the handle end 48B and the engaging end 48A to enable access by the specialized tool 45 into the tool receiving aperture 44 defined in the second closed end 32 of the housing 14 when tool access there into is limited.

Although not shown, the tamper resistant !uminaire 10 may also include a sealing member for sealing the too! receiving aperture 44 defined in the second closed end 32 when not in use, thereby to further restrict access into the housing 14. Generally, the sealing member is a barrel lock insertabie and !ockabie into the tool receiving aperture 44. A divider pane! 56 is fixed within the housing 14 across the sidewalls 24,26 thereof and extending substantially the length "D" of the housing 14. lying substantially parallel to the mounting and diffuser faces 20, 22 thereby to divide the housing 14 into a first compartment 58 nearer the diffuser face 22 and a second compartment 60 nearer the mounting face 20.

The light source 34 is housed in the first compartment 58, while at least the elongate tubular guide member 50 and the fastening boit 46 are housed in the second compartment 60. in use. the first open end of the slot 3S in the mounting face 20 of the housing 14 is placed into engagement with an engaging end 62 of the mounting bracket 12 mounted to the ceiling 100. The housing 14 is then siid along the mounting bracket 12 unti! the engaging end 62 of the mounting bracket 12 abuts the second dosed end 40 of the siot 38. in this position, the removably fastenab!e end cap 30 is fitted into the first open end 28 of the housing 14. To fit the removably fastenabie end cap 30 into the correct position such that the fastening bo!t 46 may engage the fastening bore 54 defined therein, the removably fastenabie end cap 30 comprises an alignment pin 64 extending outwardiy therefrom, which alignment pin 64 is engageable with an alignment receiving aperture 66 in the housing 14 thereby to, together with peripheral edges of the removably fastenabie end cap 30, align the removably fastenabie end cap 30 into position into the first open end 28 of the housing 14.

The removably fastenabie end cap 30 further comprises a slot engaging finger 68 extending outwardiy therefrom in substantially the same direction as the alignment pin 64. The free end 70 of the slot engaging finger 68, with the removably fastenabie end cap 30 positioned within the first open end 28 of the housing 14, abuts an opposite engaging end 72 of the mounting bracket 12 to close the slot 38 such that the length of the slot engaging with the mounting bracket 12 is substantially the same or slightly smaller than the length of the engaging portion of the mounting bracket 12, thereby restricting movement of the housing 14 along the slot 38. With the removably fastenabie end cap 30 received in the first open end 2S of the housing 14, the engaging end 48A of the speciaiized tool 48 pushed through the tool receiving aperture 44 and down the elongate tubular guide member 50 to come into engagement with the head end of the fastening bolt 45. The specialized tool 48 is then torqued by an authorized user so as to tighten the fastening boit 46 Into the fastening bore 54 defined in the removably fastenabie end cap 30, thereby to lock the latter into the housing 14 and secure the housing 14 on the ceiling 100 via the mounting bracket 12. With ihe tamper resistant !uminaire 10 secured to the ceiling 100, the specialized too! 48 should be locked away such that no unauthorized persons will have any means of accessing the inside of the housing 14.

It will be appreciated that with the housing 14 manufactured from welded thick gauge steei (about 2 millimetres in thickness), and with the diffuser panei 36 made from high impact resistant polycarbonate, access into the housing 14 other than by making use of the specialized tool 48 to engage a very Inaccessible fastening bolt 46 is rendered very difficult, if not impossible.

Although the invention has been described above with reference to preferred embodiments, it will be appreciated that many modifications or variations of the invention are possible without departing from the spirit or scope of the invention. For example, although the light ballast may be housed in the second compartment 58 in the housing 14, it may alternatively be housed remotely from the housing 14 altogether.