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Title:
PUBLIC OR STREET LED LIGHTING APPARATUS COMPRISING A PAIR OF WATERTIGHT CABLE CLAMPS
Document Type and Number:
WIPO Patent Application WO/2015/063805
Kind Code:
A1
Abstract:
A public or street LED lighting apparatus (1) is described comprising: - an array of LEDs (6) adapted to emit an optical radiation and an electric driver circuit (41) of the array of LEDs (6); - a chassis (2) adapted to house within it the array of LEDs (6) and the electric driver circuit (41) of the array of LEDs (6). The chassis (2) comprises: - a base (10) and a cover (20), detachably coupled to each other in an operating closed configuration of the chassis (2) in which a watertight inner chamber (5) is defined between the base (10) and the cover (20) adapted to house the electric driver circuit (41); - at least a first (39) and a second (39') watertight cable clamp which permit the passage respectively of a first and a second cable through confinement walls of the inner chamber (5), firmly constrain the two cables to the aforesaid walls and, being provided with gaskets, prevent infiltrations of water in the inner chamber (5). The lighting apparatus (1) has a remarkable flexibility in the realisation of various wiring configurations.

Inventors:
MOSCATELLO LUCA (IT)
Application Number:
PCT/IT2014/000279
Publication Date:
May 07, 2015
Filing Date:
October 29, 2014
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ENEL SOLE SRL (IT)
International Classes:
F21V31/00; F21V15/01; F21V23/04; F21V27/02; F21W131/10; F21W131/103; F21Y101/02
Foreign References:
US20120099318A12012-04-26
US20120188766A12012-07-26
US20080068799A12008-03-20
US20070236913A12007-10-11
Attorney, Agent or Firm:
CARANGELO, Pierluigi (Via delle Quattro Fontane 15, Roma, IT)
Download PDF:
Claims:
CLAIMS

1. Public or street LED lighting apparatus (1) comprising:

- an array of LEDs (6) adapted to emit an optical radiation and an electric driving circuit (41) of the array of LEDs (6);

- a chassis (2) adapted to house within it the array of LEDs (6) and the electric driver circuit (41) of the array of LEDs (6), wherein the chassis (2) comprises: - a base (10) ;

- a cover (20) ;

- removable attachment elements (4, 14, 21, 24) between the base (10) and the cover (20), adapted to keep the base (10) and the cover (20) coupled to each other in an operating closed configuration of the chassis in which an watertight inner chamber (5) is defined between the base (10) and the cover (20) adapted to house the electric driving circuit (41) ;

- at least a first (39) and a second (39') watertight cable clamp which permit the passage respectively of a first and a second cable through confinement walls of the inner chamber (5), firmly constrain the two cables to the aforesaid walls and, being provided with gaskets, prevent infiltrations of water in the inner chamber (5) . 2. Public or street LED lighting apparatus (1) according to claim 1, comprising:

- a first cable which crosses the first cable clamp (39) and which is adapted to provide a mains electric voltage for the power supply of the lighting apparatus 1; and - a second cable, for power supllying a device external to the chassis (2) or transporting data, crossing the second cable clamp (39'), separate from the first cable and adapted to transmit a data signal or a power supply signal between the inside and the outside of the watertight inner chamber (5) .

3. Public or street LED lighting apparatus (1) according to claim 2, wherein the second cable is an Ethernet cable .

4. Public or street LED lighting apparatus (1) according to claim 3, wherein the second cable is an Ethernet cable adapted to permit a connection of the lighting apparatus (1) to an IP network.

5. Public or street LED lighting apparatus (1) according to claims 2, 3 or 4, further comprising a data communication interface housed in the inner chamber (5) and wherein the second cable is a data transport cable and is operatingly connected to said data communication interface .

6. Public or street LED lighting apparatus (1) according to claim 5, further comprising a remote control module (42) housed in the inner chamber (5) and wherein the data communication interface is an interface of the remote control module (42) .

7. Public or street LED lighting apparatus (1) according to any of the previous claims, wherein the chassis (2) comprises at least one through opening (50) adapted to be crossed by the first and/or by the second cable.

8. Public or street LED. lighting apparatus (1) according to claim 7, comprising a tubular shank (3) coupled to the chassis (2) for the attachment of the chassis (2) to a support post, wherein the through opening (50) faces a hollow inner cross-section (53) of the tubular shank (3) and is made in the base (10) outside the inner chamber (5) and next to a shaped region (51) of the base (10) mechanically interfacing with the tubular shank (3) .

9. Public or street LED lighting apparatus (1) according to claim 8, wherein the tubular shank (3) comprises a through opening adapted to be crossed by the second cable . 10. Public or street LED lighting apparatus (1) according to any of the previous claims, wherein the base (10) and/or the cover (20) are provided with a peripheral rim having a recessed rim portion (54), adapted to be crossed laterally by the second cable in a condition in which the base (10) and the cover (20) are in an open configuration.

11. Public or street LED lighting apparatus (1) according to claim 10, wherein such recessed rim portion (54) . is positioned next to the cable clamp (39') intended to be crossed by the second cable. 12. Public or street LED lighting apparatus (1) according to claims 10 or 11, wherein said recessed rim portion (54) has a bulb-shaped layout.

13. Public or street LED lighting apparatus (1) according to any of the previous claims, wherein the inner chamber (5) is laterally defined by two confinement collars (12, 22) respectively provided in the base (10) and in the cover (20) between which in the closed position of the chassis (2) a gasket is positioned and clamped and wherein the aforesaid watertight cable clamps (39, 39') are attached to one of said two confinement collars (12, 22) .

14. Public or street LED lighting apparatus (1) according to claim 1, wherein the attachment elements (4, 14, 21, 24) comprise a cylindrical hinge (4) such as to permit a relative rotation of the cover (20) in relation to the base (10) between an angular closed position, corresponding to said operating closed configuration of the chassis (2) , and an angular open position of the chassis (2) and vice versa. 15. Lamp-post for public or street lighting, comprising a public or street LED lighting apparatus (1) according to any of the previous claims and a support post to which such lighting apparatus (1) is attached.

Description:
"Public or street LED lighting apparatus comprising a pair of watertight cable clamps"

FIELD OF THE INVENTION

[0001] The present invention relates to the technical field of LED lighting apparatuses and devices, in particular to the field of apparatuses and devices for public or street lighting.

STATE OF THE ART

[0002] In the field of public and street lighting, lighting appliances and apparatuses using semi-conductor light sources such as LEDs (Light Emitting Diodes) are becoming increasingly well established. [0003] The use of LEDs makes it possible to produce lighting apparatuses characterised by a greater flexibility of use, greater energy efficiency and greater modularity.

[0004] LED public or street lighting apparatuses generally comprise a plurality of LEDs, provided with relative optics and reflectors, appropriate heatsinks associated to said LEDs and appropriate power supply means adapted to provide the necessary power supply current to said plurality of LEDs. [0005] On account of the fact that the public or street LED lighting apparatuses are generally exposed to atmospheric agents, these devices generally comprise a chassis inside which at least one watertight chamber is provided to house and protect the LED devices and relative power supply means. However, the effectiveness of the watertight inner chamber is often jeopardised by artisan and/or impromptu operations modifying the chassis, such as perforation of the chassis walls to perform wiring, aimed at expanding the functions of the apparatuses compared to those of the design phase.

[0006] The international patent application WO2013111171 describes a street LED lighting apparatus of the prior art provided with an outer chassis made in such a way as to permit the operator to comfortably perform in situ a repair or maintenance operation if needed.

[0007] The purpose of the present disclosure is to provide a public or street LED lighting apparatus which ensures a certain flexibility in the broadening of its functions without requiring artisan and/or impromptu modifications such as to jeopardise the characteristics of the chamber inside the chassis in terms of watertightness .

[0008] Such purpose is achieved by a public or street LED lighting apparatus as generally defined in claim 1. Preferred embodiments of the aforesaid lighting apparatus are defined in the appended independent claims .

[0009] The invention will be more clearly comprehensible from the detailed description below of a particular embodiment made by way of a non-limiting example with reference to the appended drawings briefly described in the paragraph below.

BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 shows a perspective view from below of an embodiment of a public or street LED lighting apparatus comprising a chassis and a tubular shank for attaching the chassis to a support post, wherein the chassis comprises a base and a cover, wherein the base and the cover are shown in a closed operating configuration.

[0011] Figure 2 shows a plan view from below of the chassis in figure 1.

[0012] Figure 3 shows a plan view from above of the chassis in figure 1.

[0013] Figure 4 shows a partial view in lateral cross- section of the chassis in figure 1 along the axis B-B of Figure 3.

[0014] Figure 5 shows a perspective view from above of the lighting apparatus in Figure 1, wherein the base and the cover of the chassis are shown in an open operating configuration. [0015] Figure 6 shows a perspective view of an enlarged particular of the inside of the chassis of the lighting apparatus in Figure 1.

[0016] Figure 7 shows a perspective view of a further enlarged particular of the chassis of the lighting apparatus in Figure 1 wherein the base and the cover are shown in an open operating configuration.

DETAILED DESCRIPTION

[0017] With reference to the appended drawings, the public or street LED lighting apparatus 1 (hereinafter referred to as "LED street lighting apparatus" without by so doing introducing any limitation) comprises a chassis 2 and a tubular shank 3 preferably detachably coupled to the chassis 2 and adapted to couple the chassis 2 to the support post, not shown in the figures, for example, placed at the edge of a road or urban area to be illuminated.

[0018] The chassis 2 comprises a base 10 and a cover 20. Preferably, the base 10 comprises attachment elements to be detachably secured to the tubular shank 3. Such attachment elements for example comprise a system of toothed surfaces, openings and locking screws making it possible to selectively determine the orientation of the base 10 in relation to the tubular shank 3 in the attachment configuration of the aforesaid components. [0019] he LED street lighting apparatus 1 comprises an array of LEDs 6, for example arranged on a rectangular or square matrix, mounted on a printed circuit board 7 for example mounted superficially on the printed circuit board 7. The LED array 6, and thus also the printed circuit board 7, are housed inside the chassis 2. In the installation configuration and during operation of the street lighting apparatus 1, the LEDs 6 are such as to direct the optical radiation emitted towards the road surface or towards the ground of an urban area to be illuminated. [0020] According to a preferred embodiment, each of the LEDs is overlooked or covered by a respective lens of an array of refractive lenses. Preferably, such lenses are injection moulded lenses in polymethyl methacrylate (PMMA) . [0021] According to one embodiment, the cover 20 of the chassis 2 is made of a thermally conductive material which preferably has a high thermal conductivity. More preferably, the cover 20 is made of aluminium, or aluminium alloy, and is for example made in one piece by die-casting.

[0022] Preferably, the base 10 of the chassis 2 is also made of a material with a high thermal conductivity and is preferably made of aluminium or aluminium alloy, and is for example made in one piece by die-casting. [0023] Preferably, the cover 20 has a bulged shell shape and has an outer convex side and an opposite inner concave side. The printed circuit board 7 on which the LED array 6 is mounted is preferably permanently attached to the inner concave surface of the cover 20. To such purpose, at least one thermally conductive protruding element 8 projects from the inner surface of the cover 20 towards the base 10 of the chassis 2 to define a support and attachment surface of the printed circuit board 7. The aforesaid at least one thermally conductive protruding element 8 is preferably made in one piece with the cover 20, in the same material as the latter, and being in contact with the printed circuit board 7 favours the extraction of heat therefrom developed during the operation of the LED array 6 . The extracted heat may then be advantageously dissipated through said cover 20, which thus acts as a passive heatsink. Preferably the at least one protruding element 8 comprises a plurality of protruding elements 8 arranged according to a matrix format. Preferably, the protruding elements 8 are columns for example with a circular cross-section which protrude from the inner surface of the cover 20 and are interposed between the printed circuit board 7 and the inner side of the cover 20. Preferably, a thermally conductive coating, such as a phase change thermally conductive film ("thermal conductive pad") is applied to the side of the printed circuit board 7 facing the inner side of the cover 20. According to one embodiment, the aforesaid thermally conductive film comprises an aluminium film coated on both faces with a phase change compound, for example a graphite-based compound, adapted to melt with the heat during operation to decrease the thermal resistance at the contact interface between the printed circuit board

7 and the at least one protruding element 8 by decreasing the surface roughness of the contact interface .

[0024] Preferably, the printed circuit board 7 is attached to the cover 20 by means of one or more screws 9 which cross the board 7 and engage in internally threaded seats provided in the cover 20. In the example in Figure 4, in which a plurality of protruding elements

8 are provided in the form of columns, it is possible for some of these (indicated in the figure by reference numeral 8 ' ) to comprise within them the aforementioned threaded seats inside which the screws 9 are inserted.

[0025] Preferably, the base 10 has a side external to the chassis 2 and an opposite side inside the chassis 2. The outer side preferably comprises a first externally convex or flat portion 10a and a second externally concave portion 10b rearward of the first externally convex or flat portion 10a.

[0026] According to one embodiment, the base 10 comprises an opening 11 and a screen 13 transparent to the optical radiation emitted by the LED array 6 and adapted to occlude the opening 11. Preferably, the transparent screen 13 is a sheet-shape and is made of extra-clear tempered glass. The transparent screen 13 is attached to the base 10 on the side of the inner side thereof and in the closed position of the chassis 2 faces the printed circuit board 7 on which the LED array 6 is mounted. The transparent screen 13 preferably has a greater area than the area of the opening 11 and lies on a rim of the opening 11. Preferably, between the transparent screen 13 and the rim of the opening 11 an annular gasket 16 is interposed and clamped adapted to ensure a watertight seal, for example in order to ensure a degree of protection IP66.

[0027] he street lighting apparatus 1 further comprises a reflector 15, for example made of plastic and having a reflective surface preferably facing the opening 11 of the base 10. Such reflector 15 is preferably attached to the base 10 and preferably comprises an upper opening 15a adapted to be crossed by the LED array 6 in the closed operating configuration of the chassis 2. According to a particularly advantageous embodiment, the reflector comprises a first part attached to the base (shown in Figure 5), and a second part -(not shown in the figures) coupling to the first part, for example at the upper opening 15a, to extend the overall size of the reflector so as to adapt the dimensions of the upper opening of the reflector 15 to the dimensions of the LED array 6.

[0028] The reflector 15 preferably comprises two parallel or substantially parallel relatively longer sides and two parallel or substantially parallel relatively shorter sides.

[0029] Preferably, in the closed operating configuration of the chassis 2, the reflector 15 surrounds the LED array 6.

[0030] Preferably, as in the embodiment shown in figure 6, the longer sides have a greater and equal width to each other than the width of the shorter sides, such widths of the shorter sides may even be different from each other, as in the example shown.

[0031] According to a particularly preferred embodiment, the reflector 15 has an outer rim which lies on the transparent screen 13 which in turn lies on the annular 16 which in turn lies on a rim which delimits the opening 11 of the base 10. The reflector 15, the transparent screen 13 and the annular gasket 16 are pressed against the base by a plurality of clamping devices 18, preferably evenly distributed around the opening 11, For example, the clamping devices 18 comprise elastic fins 18a which press on the screen 15 and are tightened to the base 10 with screws 18b which traverse it to engage in corresponding internally threaded blind holes provided in the base 10. [0032] The base 10 and cover 20 are coupled to each other by means of attachment elements 4, 14, 21, 24. For example, the attachment elements 4, 14, 21, 24 comprise a cylindrical hinge which allows the opening of the base 10 and of the cover 20 keeping them connected to each other. In the example shown in the figures the aforesaid cylindrical hinge comprises a pair of pins 4, each of which is adapted to engage in a first through opening made in the cover 20 and a corresponding threaded through or blind hole made in the base 10.

[0033] Preferably and without by so doing introducing any limitation, the base 10 and the cover 20 are hinged around a hinge-axis A-A (the dotted line in Figure 2) placed next to the tubular shank 3 so that the base 10 and the cover 20 can reciprocally rotate around said axis A-A like two valves of a bivalve mollusc to switch from the closing configuration of the chassis 2 (Figure 1) to the open configuration of the chassis 2 (Figure 5) and vice versa. During such rotation, the LED array 6 which is attached to the cover 20 is preferably such as to rotate integrally with the cover 20 to distance itself from the screen 13 and vice versa.

[0034] According to one embodiment, the aforesaid attachment elements further comprise locking elements 14, 21, 24 adapted to detachably lock the base 10 and the cover 20 to each other in the closed position shown in figure 1. Such locking elements comprise, for example, a pair of screws 24 (see figure 3), for example, Allen screws, which crossing respective openings 21 of the cover 20 are inserted into respective threaded seats 14 provided in the base 10.

[0035] According to one embodiment, the attachment elements between the base 10 and the cover 20 comprise an articulated arm 31, 32, comprising a first portion 31 hinged to the base 10 and a second portion 32 hinged to the cover 20, the two portions 31, 32 being hinged to each other in an intermediate point of the articulated arm 31, 32. Preferably, at least one of the two portions 31, 32 is attached, in particular hinged, respectively to the base 10 or cover 20, by means of a bracket 33, for example L-shaped, sliding in relation to the base 10 or to the cover 20 respectively, so as to be translated between an operating engagement position and operating disengagement position. In such latter position, the bracket 33 can be uncoupled from the base 10 or from the cover 20 respectively.

[0036] In the example shown in Figure 6, the bracket 33 is provided for the attachment of the second portion 32 of the articulated arm 31 32, to an inner wall of the cover 20. The bracket 33 comprises at least one through hole 34 of a variable area adapted to be crossed by an attachment device with a variable cross-section 35, such as for example a screw 35 with a prominent head in relation to the stem of the screw 35, suitable to engage in a threaded hole provided in the cover 20. The through hole 34 with a variable area comprises a first portion of hole of a relatively smaller area, which cannot be axially crossed by the prominent head of the screw 35, and a second portion of the hole of a relatively greater area, which can be axially crossed by the prominent head of the screw 35. In the locking position, the screw 35 crosses the first portion of the hole, the screw 35 is tightened and the screw head 35 tightens the bracket 33 against an inner wall of the cover 20 preventing it from sliding. By slightly loosening the screw 35 it is possible to slide the bracket 33 parallel to the cover 20 and to ensure that the prominent head of the screw 35 is in the second portion of the hole of a relatively greater area, so that it is possible to axially extract the bracket 33 by the passage of the prominent head of the screw 35 through the second portion of the hole of a relatively greater area. This way it is possible to detach the bracket 33 and therefore, the articulated arm 31, 32 from the cover 20 without extracting the screw 35 fully but simply loosening it. In the particular non- limiting example shown in figure 6, two through holes with a variable area 34 and two respective screws 35 for the attachment of the bracket 33 to an inner wall of the cover 20 are provided for. [0037] Once the bracket 33 is detached, in the example from the cover 20, it is possible to remove or loosen the two pins 4 to detach the cover 20 from the base 10, for example to remove the cover 20 from the base 10. This way it is possible to safely remove the cover 20 from the base 10 in a configuration in which the base 10 is installed high up on a support post by means of the tubular shank 3.

[0038] According to one embodiment, the articulated arm 31, 32 comprises a fall-prevention safety device 36, 37, 38 adapted to prevent the inadvertent or accidental closure between the cover 20 and the base 10 for example by falling of the cover 20 onto the base 10 starting from the opening position, shown in figure 5. For example, the fall-prevention safety device 36, 37, 38 comprises a fin 36 provided on one of the first 31 or second portions 32 of the articulated arm, a hook-shaped tooth 36 on the other of the first 31 and second portions 32 of the articulated arm, and a hinge element with a slotted hole 38 which makes it possible not only to rotatably hinge the two portions 31, 32 of the articulated arm but which allows these to translate with each other by a stroke sufficient to enable the fin 36 to be able to slide in relation to the hook-shaped tooth 37 between an engagement position and a disengagement position. This way, starting from the position shown in Figures 5 and 6, the fin 36 is engaged in the hook- shaped tooth 37 and the two portions 31, 32 of the articulated arm cannot rotate with each other; to allow this rotation it is necessary to disengage the fin 36 from the hook-shaped tooth 37 for example by raising and rotating the cover 20 in the opening direction in relation to the base 10 so that the fin 35 reaches the position of disengagement.

[0039] The base 10 and the cover 20, in the closed position define at least one inner chamber 5 of the chassis 2 which houses an electronic driver module 41 of the array of LEDs 6, which preferably further houses electronic , optical and electro-optical components of the street lighting apparatus 1 needing proper segregation from atmospheric agents or generally from contact with water and or moisture. According to one embodiment, two separate inner and watertight chambers may be provided for in the chassis 2 as described in the international patent application WO2013111171, one of which is adapted to house the electronic driver module 41 and in general the electrical and electronic components, and the other the optical components, namely the array of LEDs 6, the reflector 15, the screen 13, etc.

[0040] According to one embodiment, the inner chamber 5 is laterally delimited by two confinement collars 12, 22 respectively provided in the base 10 and the cover 20, between which a gasket (not shown in the figures) is interposed and tightened in the closed position of the chassis 2. For example, one of the two confinement collars 12, 22 (in the example the collar 22 of the cover 20), is a double-walled collar and houses within a cavity defined between the two walls an annular seal, for example in silicone rubber, while the other of the two collars (in the example the collar 21 of the base 20) is a single wall collar adapted to engage at least partially in the cavity of the double wall collar 22 to clamp and compress the annular seal. Preferably, in the closed position between the base 10 and the cover 20, the inner chamber 5 of the chassis 2 has a watertight seal with degree of protection IP66. [0041] The inner chamber 5 preferably houses a support plate 40 to which an electronic driver module 41 of the array of LEDs 6 comprised in the lighting apparatus 1 is fixed. Preferably, a remote control module 42 comprised in the lighting apparatus 1 is also fixed to the plate 40 which allows the control and/or remote monitoring of the street lighting apparatus 1. The layout of the plate 40 allows it to perform in a simple way an electrical connection between the various electrical or electronic components attached to the plate 40 and to extract such components in a block together with the plate.

[0042] According to one embodiment, the support plate 40 is attached to the inner face of the base 10 in the inner chamber 5, by means of removable fast lock/release coupling elements, so that they can be quickly removed and/or replaced by an operator for example for repair and/or replacement.

[0043] According to one embodiment, a connector 43 is attached to the support plate 40 to which it is possible to attach one end of an electrical interconnection cable having an opposite end adapted to be connected via a connector to the printed circuit board 7, to connect the aforesaid printed circuit board 7 to the electronic components housed in the inner chamber 5, for example to the driver module 41 and to the remote control module 42. [0044] According to one embodiment the chassis 2 comprises at least a first 39 and a second 39' watertight cable clamp which: permit the passage respectively of a first and a second cable through confinement walls of the inner chamber 5, firmly constrain the two cables to the aforesaid walls and, being provided with gaskets, prevent infiltrations of water in the inner chamber 5 for example ensuring a level of protection IP66 of the inner chamber 5. A non- limiting example of a watertight cable clamp is described in the patent application EP1944844.

[0045] According to the embodiment shown in figure 5, the aforesaid watertight cable clamps 39, 39' are attached to one of the two of confinement collars 12, 22 and preferably to the confinement collar 12 of the base 10.

[0046] In the aforesaid embodiment in which at least a first and a second 39 39' watertight cable clamp are provided for, the lighting apparatus 1 comprises:

- a first power supply cable (not shown in the figure) of the lighting apparatus 1, which crosses the first cable clamp 39 and which is adapted to provide a mains electric voltage for the power supply of the lighting apparatus 1; and

- a second cable, for power supplying a device external to the chassis 2 or transporting data, crossing the second cable clamp 39', separate from the first cable and adapted to transmit a data signal or a power supply signal between the inside and the outside of the watertight inner chamber 5.

[ 0047] According to one embodiment, the second cable is an Ethernet network cable such as a PoE (Power over Ethernet) . Said Ethernet cable is such as to permit connection of the lighting apparatus 1 to an IP network.

[0048 ] According to one embodiment, the street lighting apparatus 1 comprises a data communication interface housed in the inner chamber 5 and the second cable is a data transport cable and is operatively connected to said data communication interface. Said. data communication interface is for example a remote control module interface 42.

[0049] According to a further embodiment, the second cable is a unipolar or multipolar power supply cable. [0050] According to a further embodiment, the second cable is connected to an external twilight sensor or any further remote device or external to the chassis 2, to which it delivers the power supply voltage needed for its operation. [0051] According to a preferred embodiment, the chassis 2 comprises at least one through opening 50 adapted to be crossed by the first and / or second cable. The through opening 50 is facing a hollow inner section 53 of the tubular shank 3 and is made for example in the base 10 outside the inner chamber 5 and next to a shaped region 51 of the base 10 of the mechanical interface with the tubular shank 3. This way it is possible to make the first and/or the second cable pass through the inner hollow section 53 of the tubular shank 3. [0052] Some applications may require that second cable be connected to an external device placed near the end of the support post distal from the post base, thus positioned near or in contact with the chassis 2 and outside this. For this reason a lateral through opening (not shown in the figures) may be provided in the side walls of the tubular shank 3 adapted to be crossed by the second cable. Alternatively or in addition, the base 10 or the cover 20 (or both) may be fitted on a peripheral rim of a recessed edge portion 54, for example having a bulb-shaped section, inside which it is possible to insert the second cable laterally in a condition in which the base 10 and the cover 20 are in the open configuration. Thanks to the provision of such recessed edge portion 54 it is possible after laterally inserting the cable inside it, to close the base 10 and the cover 20 together without the second cable hindering or interfering with such closure.

[0053] Preferably, the recessed edge portion 54 is positioned next to the cable clamp 39' designed to crossed by the second cable. In a preferred embodiment, according to the figures, this recessed edge portion 54 is provided in the base 10.

[0054] It is to be noted that the provision of the recessed edge portion 54 (or of a lateral through- opening of the tubular shank 3) and the through opening 50 of the chassis, makes it possible to implement three different configurations for the control of any remote devices located on the support post of the lighting apparatus 1 or in its immediate vicinity (such as at the base of the post) . [0055] In a first configuration, a data transport cable which comes from the base of the support post (for example in the case of systems in which data is travelling on an optic fibre backbone) , which passes inside the support post and which crosses the through opening 50 and the recessed edge portion 54 (or the lateral through-opening of the tubular shank 3) , can come out of the lighting apparatus 1 to control a remote device placed on the support pole in the vicinity of the lighting apparatus 1.

[0056] In a second configuration, a data transport cable from the remote control module 42 located in the chamber 5, or a power supply cable coming from the connector 43 located in the inner chamber 5 can come out of the chassis 2 to control and/or power an external device through the cable clamp 39' and the recessed edge portion 54 (or lateral through-opening of the tubular shank 3) .

[0057] In another configuration, a data transport cable coming from the remote control module 42 located in the chamber 5, through the cable clamp 39' and the through opening 50, can cross the support post to control external devices placed for example at the base of the support post.

[0058] Preferably, the lighting apparatus 1 comprises a sectioning device 19, 29 comprising two complementary sectioning elements respectively attached to the base 10 and to the cover 20 and arranged facing one another in the closed configuration of the chassis 2.

[0059] Preferably, the sectioning device 19, 29 is positioned in the vicinity of the cable clamp 39 adapted to be crossed by the first cable. [0060] The sectioning element 19 attached to the base 10 comprises an input port and an output port. The input port is adapted to be connected to the conductors of the mains power supply cable coming from outside and the output port is adapted to be connected to conductors connecting the sectioning device 19, 29 and the various electrical or electronic components attached to the plate 40 which require a power supply voltage. By providing male contact elements in the sectioning element 29 attached to the cover 20 and complementary female contact elements, each adapted to receive a corresponding male contact element in the closed configuration of the chassis 2, in the sectioning element 19 attached to the base 10, the sectioning device 19, 29 makes it possible to automatically power down the various electrical or electronic components attached to the support plate 40 which require a power supply voltage in the moment passing from a closed position of the base 10 and the cover 20 to an open position . [0061] As is clear from the above description, the lighting apparatus 1 proposed makes it possible to fully achieve the intended purposes in terms of overcoming the drawbacks of the prior art, since it makes it possible to avoid jeopardising the characteristics of the inner chamber 5 in terms of watertightness while presenting a considerable flexibility in the realisation of varied wiring configurations.

[0062] It is to be noted that by means of the lighting appliance 1 according to the present description, a street lighting apparatus may be provided, such as for example a lamp-post for street lighting, comprising a lighting apparatus according to the present description and a support post to which such lighting apparatus is attached. It is to be noted that the present invention also relates to such street lighting apparatus. [0063] Without prejudice to the principle of the invention, the embodiments and details of construction may be widely varied in relation to the description and illustrated purely by way of non-limiting example, without thereby departing from the invention as defined in the appended claims.