Luminaire trunking system with end plate and end mounting plate thereof

Abstract

A luminaire trunking system comprising: a profile module; a profile element; and an end plate. The profile module includes a light compartment provided with a light source, and extends between a first extremity and a second extremity. The profile element, such as a light diffuser, extends from the first extremity in a direction of the second extremity and is configured for being mounted to the profile module. The end plate is provided to the first extremity of the profile module, said at least one end plate being L-shaped. An expansion gap is formed between an internal surface of the at least one end plate and a facing extremity of the profile element.

Description

[0001] LUMINAIRE TRUNKING SYSTEM WITH END PLATE AND END MOUNTING PLATE THEREOF

[0002] FIELD OF INVENTION

[0003] The field of invention relates to luminaire trunking system with end plates and end mounting plates thereof. Particular embodiments relate to end plates and end mounting plates for closing off extremities of luminaire trunking systems.

[0004] BACKGROUND

[0005] Linear luminaires, luminaire trunking systems, or luminaire profile modules made to contain electrical components, including one or more light sources for example, are readily available and are typically made for preventing ingress of external elements within the luminaire trunking systems to protect the electrical components contained therein. To close off their extremities, end plates are typically employed. There are many manners to fix end plates to extremities of the luminaire trunking systems. However, often the design of end plates is overlooked as one essentially desires to provide a closure function. Nonetheless, the end plates are also of importance as they can participate to the overall performance of the luminaire trunking system, and, since they provide access to the insides of the luminaire trunking systems, their fixation mechanism impacts user-friendliness.

[0006] Typically, screws going through the end plates and configured for cooperating with grooves formed in extruded parts of the luminaires trunking systems are employed to fix the end plates. Furthermore, the end plates often consist of a single plate shaped to mate an extremity of a luminaire trunking system with a channel for a gasket, for example. This makes for a basic usefulness and user-friendliness of the end plates. Nonetheless, problems remain when using such simple plates. Indeed, due to the different materials used in a luminaire trunking system, thermal expansion occurs at different rates and issues related to tightness of the end plate at the level of its junction with other components of the luminaire trunking system and light leakage from this junction are not rare. Additionally, the use of silicon gasket to try ensuring sealing at the junction is not a future-proof solution as it presents recycling issues. There is thus a need for a luminaire trunking with an improved end plate fulfilling more than a closure function.SUMMARY

[0007] The object of embodiments of the invention is to provide a luminaire trunking system which presents an end plate with an improved functionality, as well as a luminaire trunking system which includes an end plate with more convenient closure function, and an end mounting plate offering a robust coupling to an extremity of a luminaire trunking system.

[0008] According to a first aspect of the invention, there is provided a luminaire trunking system. The luminaire trunking system comprises: a profile module; a profile element; and an end plate. The profile module includes a light compartment provided with a light source, and extends between a first extremity and a second extremity. The profile element, such as a light diffuser, extends from the first extremity in a direction of the second extremity and is configured for being mounted to the profile module. The end plate is provided to the first extremity of the profile module, said at least one end plate being L-shaped. An expansion gap is formed between an internal surface of the at least one end plate and a facing extremity of the profile element.

[0009] Here, by luminaire trunking system, it is meant a luminaire whose main structural parts are made by extrusion to define an elongated luminaire and whose length can be freely modulated according to the needs.

[0010] The profile module includes a main housing element of the luminaire trunking system which is generally made by extrusion. In an embodiment, the main housing element of profile module may have a U-shaped profile and may define an inner space into which various electrical components may be placed, such as the light compartment. The light compartment may include a mounting support, such as a gear tray, onto which the light source is mounted. The mounting support may also be manufactured by extrusion. The profile element may be configured to cooperate with the light compartment. For example, the profile element may be a light diffuser arranged to face the light source of the light compartment such as to allow light emitted by the light source to pass through. Depending on embodiments, the profile element may be fixed to the profile module using mechanical and / or chemical fixation means, such as screws, bolts, glue, snap fits elements, etc.

[0011] The at least one end plate is L-shaped, with the bottom portion of the L arranged below the profile element in a mounted state of the luminaire trunking system. Therefore, a portion of the at least one end plate and a portion of the profile element overlap. However, the end plate is provided to the first extremity of the profile module in a way that an extremity of the profile element does not abut against the internal surface of the at least one end plate. On the contrary, a gap, the expansion gap, is purposely created between the internal surface of the at least one end plate andthe facing extremity of the profile element. Thanks to the expansion gap, the profile element has the space to expand and contract depending on temperature variations of the surrounding environment. Further, thanks to the bottom portion of the L of the at least one end plate, light leakage due to a contraction of the profile element is prevent as the bottom portion of the L will block the light passing through the gap formed due to the contraction.

[0012] The luminaire trunking system may be adapted for outdoor lighting or industrial lighting. By outdoor lighting and industrial lighting, it is meant lighting adapted for roads, tunnels, industrial plants, stadiums, airports, harbors, rail stations, campuses, parks, cycle paths, pedestrian paths, or pedestrian zones for example, and industrial and outdoor lighting systems can be used notably for the lighting of an outdoor area, such as roads and residential areas in the public domain, private parking areas and access roads to private building infrastructures, warehouses, industry halls, etc.

[0013] In an embodiment, a driving means may be provided to the profile module and may be configured for driving the light source and / or an electronic component provided to the profile module. Depending on embodiments, the electronic component comprises one or more among the following;

[0014] - a camera unit;

[0015] - a laser device;

[0016] - a radar device;

[0017] - a microphone;

[0018] - a movement detector;

[0019] - a light emitting device such as an ultraviolet (UV) light or an infrared (IR) light or a light for light fidelity (Li-Fi) communication;

[0020] - a panic button;

[0021] - a pollution sensor;

[0022] - a visibility sensor;

[0023] - a sound sensor;

[0024] - a temperature sensor;

[0025] - a spraying / sanitizing device;

[0026] - power management circuitry;

[0027] - telecommunication circuitry, such as base station circuitry;

[0028] - audio system management circuitry;

[0029] - a display;

[0030] - an antenna;

[0031] - WiFi circuitry,

[0032] - charger circuitry, e.g. phone charger circuitry or vehicle charger circuitry;- an environmental sensor such as a microphone, or a detector of CO2, NOx, smoke, etc., and the associated circuitry;

[0033] - a human interface device (HID) and the associated circuitry, e.g. a camera, a loudspeaker, a button, a touch screen, etc.

[0034] - repeater circuitry, e.g. a WiFi repeater;

[0035] - a sign, such as a publicity banner;

[0036] - a socket, such as an electrical socket.

[0037] As part of the luminaire trunking system, another profile module may be coupled to the profile module of the luminaire trunking system. The another profile module may be connected to the profile module mechanically, and their components may be also electrically and / or mechanically connected.

[0038] According to an exemplary embodiment, the at least one end plate is made of a first material and the profile element is made of a second material, said first material having a different, preferably smaller, thermal expansion coefficient than the second material.

[0039] Preferably, the at least one end plate is made of metal, preferably of aluminum, and the profile element, such as the light diffuser, is made of plastic preferably of polycarbonate.. In an alternative embodiment, the at least one end plate may be made of plastic by molding, in polycarbonate for example. In a favored embodiment, a thermal expansion coefficient of a material composing the at least one end plate is below 30.106K ’.

[0040] In this manner, the first material of the at least one end plate is substantially less affected by changes in temperatures with respect to the material of the profile element, and the overlap between the at least one end plate and the profile element at the extremity thereof is kept.

[0041] Manufacturing the profile element in a plastic material, the profile element can be easily shaped. Additionally, when the at least one end plate is made of metal, the profile element will be more sensitive to changes in temperatures than the at least one end plate in terms of expansion and contraction. So, the at least one end plate will be able to efficiently perform its function of light leakage prevention.

[0042] According to an exemplary embodiment, the at least one end plate comprises an internal raised portion extending substantially perpendicular from the at least one end plate and configured for cooperating with an internal peripheral edge of the light compartment.In this manner, a type of plug is formed by the internal raised portion relative to an extremity of the light compartment and the end plate will also be able to block off potential emission of light from the extremity of the light compartment.

[0043] In one embodiment, the internal raised portion may be fixed to the internal surface of the at least one end plate; and the internal raised portion may be made from a different material that the rest of the at least one end plate. In an alternative embodiment, the internal raised portion may be an integral portion of the at least one end plate.

[0044] According to a preferred embodiment, the luminaire trunking system further comprise a plate retaining means configured for retaining the at least one end plate in contact with the first extremity. The plate retaining means includes an elastic member configured for allowing an elastic displacement of the at least one end plate away from the profile module along a main axis of the profile module.

[0045] By allowing the elastic displacement of the at least one end plate away from the profile module, a user of the luminaire trunking system can pull away the at least one end plate in a tool-less manner, which is more user-friendly, and which enables to partially access elements of the luminaire trunking profile, the profile element for example, without having to completely separate the at least one end plate from the luminaire trunking system.

[0046] Additionally, due to the restoring force, the at least one end plate may be maintained in close contact with the first extremity of the profile module.

[0047] According to a preferred embodiment, the luminaire trunking system further comprises at least one end mounting plate coupled to the profile module at the first extremity thereof. The plate retaining means is provided to the at least one end mounting plate.

[0048] In this way, the at least one end mounting plate may serve as static support against which the elastic member abuts when pulling away the at least one end plate.

[0049] According to an exemplary embodiment, the plate retaining means includes a nut and a bolt.

[0050] Preferably, the elastic member comprises at least one spring arranged over the bolt, between the nut and the at least one end plate.

[0051] In this manner, a reliable and simple fixation means is employed for retaining the at least one end plate. Preferably, the plate retaining means includes a pair of nuts and a pair of bolts. The at leastone spring may be at least one coil spring. The nut will prevent the at least one spring from leaving its position over the bolt.

[0052] According to a preferred embodiment, the plate retaining means is provided to a half of the at least one end plate away from the profile element.

[0053] In this way, the elastic member will favor a rotational pull of at least one end plate with a larger gap opened between an internal surface of the at least one end plate and an extremity of the profile element. Thus, access to the extremity of the profile element, in order to remove the profile element for example, is rendered easier.

[0054] According to a preferred embodiment, the at least one end mounting plate comprises: a base plate; a first lateral wing; and a second lateral wing. The base plate extends between a first extremity and a second extremity opposite thereof. The first lateral wing extends away from the first extremity of the base plate substantially perpendicularly with respect to the base plate. The second lateral wing extends away from the second extremity of the base plate substantially perpendicularly with respect to the base plate, said second lateral wing facing the first lateral wing. The first lateral wing and the second lateral wing are configured for being inserted into the end of the profile module. The first lateral wing includes a first fixation slot extending from a first edge of the first lateral wing along a first width of the first lateral wing, said first fixation slot configured for cooperating with a first fixation means such as to fix the end mounting plate relative to the profile module. The second lateral wing includes a second fixation slot extending from a second edge of the second lateral wing along a second width of the second lateral wing, said second fixation slot configured for cooperating with a second fixation means such as to fix the end mounting plate relative to the profile module.

[0055] The end mounting plate is meant to be a mounting support for an end plate of the profile module. Due to the insertion of the first lateral wing and the second lateral wing of the end mounting plate within the end of the profile module, a coupling between the profile module and the end mounting plate is achieved from within the profile module without substantially impacting an external housing portion of the profile module. This means that the addition of potential new sources of ingress in order to affix and end plate via the end mounting plate is decreased. Furthermore, hiding the means of coupling within the profile module is more aesthetically pleasing.

[0056] Moreover, since the first fixation slot and the second fixation slot extend along the first width and the second width, respectively, the first fixation means and the second fixation means can apply a retaining force across a larger section of the first lateral wing and the second lateralwing than typical bolts inserted via through-holes going through the thickness of the end mounting plate, for example. Therefore, there is less play and the coupling is more robust along a main axis of the profile module, the first fixation means and the second fixation means being configured for extending substantially perpendicular relative to the main axis.

[0057] Preferably, the first fixation slot extends over at least 30% of the first width of the first lateral wing and the second fixation slot extends over at least 30% of the second width of the second lateral wing.

[0058] According to an exemplary embodiment, the first fixation slot of the first lateral wing and the second fixation slot of the second lateral wing each extend into a spring slot configured for allowing an elastic extension of the first lateral wing and of the second lateral wing, respectively, in a direction substantially perpendicular to the base plate.

[0059] By spring slot, it is meant a substantially circular hole formed at a bottom extremity of the first fixation slot and at a bottom extremity of the second fixation slot, respectively.

[0060] In this manner, an end plate affixed to the end mounting plate can be more easily pulled away from an extremity of the profile module to allow access to other elements of the profile module or contained withing the profile module.

[0061] According to a preferred embodiment, the first fixation means comprises a first bolt and is configured for extending along a length greater than an engagement length of the first bolt relative to the first fixation slot. The second fixation means comprises a second bolt and is configured for extending along a length greater than an engagement length of the second bolt relative to the second fixation slot.

[0062] In this way, the first fixation means applies only a retaining force substantially perpendicular to the main axis of the end mounting plate, without applying stress across the plate width due to the first fixation means abutting against an inner extremity of the first fixation slot.

[0063] Preferably, a ratio of an engagement length of the first bolt over a depth of the first fixation slot is between 60 and 90%, more preferably between 70 and 80%. Additionally, a width of the first fixation slot may be between 4 and 6 mm.

[0064] The same considerations with respect to the first fixation means and the first fixation slot as mentioned above also apply to the second fixation means and to the second fixation slot.

[0065] According to an exemplary embodiment, the first fixation slot and the second fixation slot each include a pulling corner at the first edge of the first lateral wing and at the second edge of thesecond lateral wing, respectively, said pulling corner being defined by a rounded and / or angled profile.

[0066] In this manner, when inserting the first( / second) fixation means through the first( / second) fixation slot, the abutment of the first( / second) fixation means against the pulling corner will create a pulling force of the end mounting plate towards the profile module due to an extremity of the first( / second) fixation means pushing against the rounded and / or angled profile of the pulling corner.

[0067] According to a preferred embodiment, the first extremity of the base plate joining with the first lateral wing and / or the second extremity of the base plate joining with the second lateral wing each comprises a plurality of pliability apertures configured for increasing a pliability of a material of the base plate.

[0068] In this way, the user of the end mounting plate can easily adapt the angle of the first lateral wing or the second lateral wing with respect to the base plate in order to favor the insertion of the first lateral wing and the second lateral wing into the profile module.

[0069] According to an exemplary embodiment, the base plate, the first lateral wing, and the second lateral wing are integrally formed.

[0070] In this manner, the end mounting plate can be more solid and simpler to manufacture. Typically, the end mounting plate may be made from metal.

[0071] Preferably, two similar end plates such as described above are used at each extremity of the profile module.

[0072] The skilled person will understand that the hereinabove described technical considerations and advantages for embodiments of a luminaire trunking system also apply to the below described corresponding luminaire trunking system embodiments, mutatis mutandis.

[0073] According to a second aspect of the invention, there is provided a luminaire trunking system. The luminaire trunking system comprises: a profile module; a profile element; at least one end plate; and a plate retaining means. The profile module optionally includes a light compartment provided with a light source, and extends between a first extremity and a second extremity. The profile element, such as a light diffuser, extends from the first extremity in a direction of the secondextremity, and is configured for being mounted to the profile module. The at least one end plate is provided to the first extremity. The at least one end plate is L-shaped. The plate retaining means is configured for retaining the at least one end plate in contact with the first extremity. The plate retaining means includes an elastic member configured for allowing an elastic displacement of the at least one end plate away from the profile module along a main axis of the profile module.

[0074] By allowing the elastic displacement of the at least one end plate away from the profile module, a user of the luminaire trunking system can pull away the at least one end plate in a tool-less manner, which is more user-friendly, and which enables to partially access elements of the luminaire trunking profile, the profile element for example, without having to completely separate the at least one end plate from the luminaire trunking system.

[0075] Additionally, due to the restoring force, the at least one end plate may be maintained in close contact with the first extremity of the profile module.

[0076] According to a preferred embodiment, the luminaire trunking system further comprises at least one end mounting plate coupled to the profile module at the first extremity thereof. The plate retaining means is provided to the at least one end mounting plate.

[0077] In this way, the at least one end mounting plate may serve as static support against which the elastic member abuts when pulling away the at least one end plate.

[0078] According to an exemplary embodiment, the plate retaining means includes a nut and a bolt.

[0079] Preferably, the elastic member comprises at least one spring arranged over the bolt, between the nut and the at least one end plate.

[0080] In this manner, a reliable and simple fixation means is employed for retaining the at least one end plate. Preferably, the plate retaining means includes a pair of nuts and a pair of bolts. The at least one spring may be at least one coil spring. The nut will prevent the at least one spring from leaving its position over the bolt.

[0081] According to a preferred embodiment, the at least one end plate is defined by a long vertical portion of the L-shape and a bottom horizontal portion of the L-shape. The long vertical portion includes an upper half portion and a lower half portion, said lower half portion being located next to the bottom horizontal portion. The plate retaining means is provided to the upper half portion of the long vertical portion. In other words, the plate retaining means is provided to a half portion of the at least one end plate away from the profile element.In this way, the elastic member will favor a rotational pull of at least one end plate with a larger gap opened between an internal surface of the at least one end plate and an extremity of the profile element. Thus, access to the extremity of the profile element, in order to remove the profile element for example, is rendered easier.

[0082] The skilled person will understand that the hereinabove described technical considerations and advantages for embodiments of a luminaire trunking system and other embodiments of a luminaire trunking system also apply to the below described corresponding end mounting plate embodiments, mutatis mutandis.

[0083] According to a third aspect of the invention, there is provided an end mounting plate for coupling to an end of a profile module. The end mounting plate comprises: a base plate; a first lateral wing; and a second lateral wing. The base plate extends between a first extremity and a second extremity opposite thereof. The first lateral wing extends away from the first extremity of the base plate substantially perpendicularly with respect to the base plate. The second lateral wing extends away from the second extremity of the base plate substantially perpendicularly with respect to the base plate, said second lateral wing facing the first lateral wing. The first lateral wing and the second lateral wing are configured for being inserted into the end of the profile module. The first lateral wing includes a first fixation slot extending from a first edge of the first lateral wing along a first width of the first lateral wing, said first fixation slot configured for cooperating with a first fixation means such as to fix the end mounting plate relative to the profile module. The second lateral wing includes a second fixation slot extending from a second edge of the second lateral wing along a second width of the second lateral wing, said second fixation slot configured for cooperating with a second fixation means such as to fix the end mounting plate relative to the profile module.

[0084] The end mounting plate is meant to be a mounting support for an end plate of the profile module. Due to the insertion of the first lateral wing and the second lateral wing of the end mounting plate within the end of the profile module, a coupling between the profile module and the end mounting plate is achieved from within the profile module without substantially impacting an external housing portion of the profile module. This means that the addition of potential new sources of ingress in order to affix and end plate via the end mounting plate is decreased. Furthermore, hiding the means of coupling within the profile module is more aesthetically pleasing.

[0085] Moreover, since the first fixation slot and the second fixation slot extend along the first width and the second width, respectively, the first fixation means and the second fixation means can apply a retaining force across a larger section of the first lateral wing and the second lateralwing than typical bolts inserted via through-holes going through the thickness of the end mounting plate, for example. Therefore, there is less play and the coupling is more robust along a main axis of the profile module, the first fixation means and the second fixation means being configured for extending substantially perpendicular relative to the main axis.

[0086] When using the end mounting plate, the skilled person will understand that the base plate will end up being positioned in a plane substantially coinciding with a section of the profile module, at an extremity thereof. Moreover, when using the end mounting plate, the first lateral wing and the second lateral wing will end up being positioned in planes substantially parallel to lateral sides of the profile module. So, the skilled person will understand that the first width of the first lateral wing and the second width of the second lateral wing are configured for extending both in a plane substantially parallel to the base plate.

[0087] Preferably, the first fixation slot extends over at least 30% of the first width of the first lateral wing and the second fixation slot extends over at least 30% of the second width of the second lateral wing.

[0088] According to an exemplary embodiment, the first fixation slot of the first lateral wing and the second fixation slot of the second lateral wing each extend into a spring slot configured for allowing an elastic extension of the first lateral wing and of the second lateral wing, respectively, in a direction substantially perpendicular to the base plate.

[0089] By spring slot, it is meant a substantially circular hole formed at a bottom extremity of the first fixation slot and at a bottom extremity of the second fixation slot, respectively.

[0090] In this manner, an end plate affixed to the end mounting plate can be more easily pulled away from an extremity of the profile module to allow access to other elements of the profile module or contained withing the profile module.

[0091] According to a preferred embodiment, the first fixation means comprises a first bolt and is configured for extending along a length greater than an engagement length of the first bolt relative to the first fixation slot. The second fixation means comprises a second bolt and is configured for extending along a length greater than an engagement length of the second bolt relative to the second fixation slot.

[0092] In this way, the first fixation means applies only a retaining force substantially perpendicular to the main axis of the end mounting plate, without applying stress across the plate width due to the first fixation means abutting against an inner extremity of the first fixation slot.Preferably, a ratio of an engagement length of the first bolt over a depth of the first fixation slot is between 60 and 90%, more preferably between 70 and 80%. Additionally, a width of the first fixation slot may be between 4 and 6 mm.

[0093] The same considerations with respect to the first fixation means and the first fixation slot as mentioned above also apply to the second fixation means and to the second fixation slot.

[0094] According to an exemplary embodiment, the first fixation slot and the second fixation slot each include a pulling corner at the first edge of the first lateral wing and at the second edge of the second lateral wing, respectively, said pulling corner being defined by a rounded and / or angled profile.

[0095] In this manner, when inserting the first( / second) fixation means through the first( / second) fixation slot, the abutment of the first( / second) fixation means against the pulling corner will create a pulling force of the end mounting plate towards the profile module due to an extremity of the first( / second) fixation means pushing against the rounded and / or angled profile of the pulling corner.

[0096] According to a preferred embodiment, the first extremity of the base plate joining with the first lateral wing and / or the second extremity of the base plate joining with the second lateral wing each comprises a plurality of pliability apertures configured for increasing a pliability of a material of the base plate.

[0097] In this way, the user of the end mounting plate can easily adapt the angle of the first lateral wing or the second lateral wing with respect to the base plate in order to favor the insertion of the first lateral wing and the second lateral wing into the profile module.

[0098] According to an exemplary embodiment, the base plate, the first lateral wing, and the second lateral wing are integrally formed.

[0099] In this manner, the end mounting plate can be more solid and simpler to manufacture. Typically, the end mounting plate may be made from metal.

[0100] To keep the first lateral wing and the second lateral wing in place laterally, the main housing element of the profile module may include a plurality of plate insertion rails configured for guiding and maintaining the end mounting plate inserted into the profile module. More specifically, a plate insertion rail of the plurality of plate insertion rails may be formed by a pair of walls extendingsubstantially parallel to each other. Another plate insertion rail may be implemented opposite the plate insertion rail of the plurality of plate insertion rails so that the lateral wings (first and second) of the end mounting plate are engaging with the plurality of plate insertion rails on both of their respective edges. Depending on embodiments, the plurality of plate insertion rails may be oriented vertically or horizontally to a mounting position of the luminaire trunking system.

[0101] The first fixation means of the embodiment may also include a first nut configured for cooperating with the first bolt, and the second fixation means may include a second nut configured for cooperating with the second bolt.

[0102] Optionally, the profile module may further include a plurality of nut insertion rails configured for guiding and maintaining the first nut and the second nut, respectively, inserted into the profile module. More specifically, the first nut and the second nut may have parallelepipedal shapes, and the plurality of nut insertion rails may be provided in alignment with the plurality of plate insertion rails.

[0103] BRIEF DESCRIPTION OF THE FIGURES

[0104] The accompanying drawings are used to illustrate presently preferred non-limiting exemplary embodiments of devices of the present invention. The above and other advantages of the features and objects of the invention will become more apparent and the invention will be better understood from the following detailed description when read in conjunction with the accompanying drawings in which:

[0105] Figures la & lb show an exploded perspective view of an embodiment of a luminaire trunking system and of a perspective view of an end plate of the luminaire trunking system, respectively, according to the invention;

[0106] Figure 2 illustrates an exploded perspective view of another embodiment of a luminaire trunking system according to the invention;

[0107] Figure 3 displays a perspective view of an embodiment of an end mounting plate according to the invention;

[0108] Figures 4a & 4b depict a perspective view of an embodiment of a main housing element of a profile module, as well as a perspective view of parts of an embodiment of a luminaire trunking system according to the invention;

[0109] Figure 5 exhibits an exploded view of an embodiment of an end mounting plate and an end plate according to the invention.DESCRIPTION OF EMBODIMENTS

[0110] Figures la & lb show an exploded perspective view of an embodiment of a luminaire trunking system and of a perspective view of an end plate of the luminaire trunking system, respectively, according to the present invention. The luminaire trunking system comprises: a profile module 10; a profile element 30; and the end plate 20.

[0111] The profile module 10 includes a light compartment 11 provided with a light source 12, and extends between a first extremity 10a and a second extremity (not shown). The profile module 10 of the embodiment of Fig.l includes a main housing element 13 of the luminaire trunking system which is generally made by extrusion. As shown in Fig. la, the main housing element 13 of the profile module 10 has a U-shaped profile defining an inner space into which various electrical components may be placed, such as the light compartment 11. More specifically, inner surfaces of the main housing element 13 may comprise retaining protrusions extending along the length of the main housing element 13, and outer surfaces of the light compartment 11 may comprise corresponding retaining protrusions. The light compartment 11 may be inserted through the opening in the U-shaped profile of the main housing element 13 and be affixed to the main housing element 13 by snap-fitting the retaining protrusions of the light compartment 11 to the ones of the main housing element 13 or retained within the opening using other fixing means, such as movable tabs. Additionally, in the embodiment of Fig. la, the light compartment 11 includes a mounting support 14, such as a gear tray, onto which the light source 12 is mounted. The mounting support 14 may also be manufactured by extrusion.

[0112] The profile element 30, such as a light diffuser, extends from the first extremity 10a in a direction of the second extremity and is configured for being mounted to the profile module 10. The profile element 30 may be configured to cooperate with the light compartment 11. For example, the profile element 30 may be a light diffuser arranged to face the light source 12 of the light compartment 11 such as to allow light emitted by the light source 12 to pass through.

[0113] Depending on embodiments, the profile element 30 may be fixed to the profile module using mechanical and / or chemical fixation means, such as screws, bolts, glue, snap fits elements, etc. The profile element 30 of Fig. la is made of plastic, preferably of polycarbonate.

[0114] The at least one end plate 20 is provided to the first extremity 10a of the profile module. The at least one end plate 20 is L-shaped. The at least one end plate 20 comprises a long vertical portion 20a configured for facing the first extremity 10a of the profile module, and a bottom horizontal portion 20b extending substantially perpendicular to the long portion 20a. As shown in Fig. la, the bottom portion 20b of the at least one end plate is arranged to be below the profile element 30 in a mounted state of the luminaire trunking system. Therefore, a part of the bottom portion 20b of the at least one end plate and a part of the profile element 30 overlap as seen in avertical direction. However, the at least one end plate 20 is provided to the first extremity 10a of the profile module in a way that an extremity 30a of the profile element does not abut against an internal surface 21 of the at least one end plate. Due to the absence of abutment, an expansion gap is formed between the internal surface 21 of the at least one end plate and the facing extremity 30a of the profile element. Thanks to the expansion gap, the profile element 30 has the space to expand and contract depending on temperature variations of the surrounding environment.

[0115] Additionally, the at least one end plate 20 may comprise an internal raised portion 22 extending substantially perpendicular from the at least one end plate 20 and configured for cooperating with an internal peripheral edge of the light compartment 11. More particularly, the internal raised portion 22 follows an internal shape at the periphery of the light compartment 11. Thus, when the at least one end plate 20 will be fixed to the first extremity 10a of the profile module, the internal raised portion 22 will act as a plug for the extremity of the light compartment 11. In the embodiment of Fig. lb, the internal raised portion 22 is fixed to the internal surface 21 and the internal raised portion 22 is made from a different material that the rest of the at least one end plate 20. In an alternative embodiment, the internal raised portion 22 may be an integral portion of the at least one end plate 20.

[0116] Generally, the at least one end plate 20 is made of a first material and the profile element is made of a second material, said first material having a smaller thermal expansion coefficient than the second material. For example, the at least one end plate 20 is made of metal, preferably of aluminum. In an alternative embodiment, the at least one end plate 30 may be made of plastic by molding, in polycarbonate for example. Preferably, a thermal expansion coefficient of a material composing the at least one end plate 30 is below 30.106K ’.

[0117] The skilled person will understand that, although not shown, the profile module 10 may present similar characteristics to its first extremity at its second extremity. Therefore, two similar end plates such as described above may be used at each of the first and second extremities of the profile module 10.

[0118] Figure 2 illustrates an exploded perspective view of another luminaire trunking system according to the present invention. The luminaire trunking system comprises: a profile module 10; a profile element (not shown); at least one end plate 20; and a plate retaining means 40.

[0119] The luminaire trunking system of the embodiment of Fig.2 may be similar to the one described with respect to the embodiment of Fig.l. The profile module 10 may optionally include a light compartment (not shown) provided with a light source, and extends between a first extremity 10a and a second extremity (not shown). The profile element, such as a light diffuser, extends from the first extremity 10a in a direction of the second extremity, and is configured for being mountedto the profile module 10. The at least one end plate 20 is provided to the first extremity 10. The at least one end plate 20 is L-shaped.

[0120] The plate retaining means 40 is configured for retaining the at least one end plate 20 in contact with the first extremity 10a. The plate retaining means 40 includes an elastic member 41 configured for allowing an elastic displacement of the at least one end plate 20 away from the profile module 10 along a main axis of the profile module 10. By allowing the elastic displacement of the at least one end plate 20 away from the profile module 10, a user of the luminaire trunking system can pull away the at least one end plate 20 in a tool-less manner. Preferably, and as shown in Fig.2, the plate retaining means 40 is provided to a half of the at least one end plate 20 away from the profile element, i.e. above a middle line of the at least one end plate 20 as seen in a vertical direction.

[0121] In the embodiment of Fig.2, the luminaire trunking system further comprises at least one end mounting plate 50 configured for being coupled to the profile module 10 at the first extremity 10a thereof. The end mounting plate 50 is meant to be a mounting support for the at least one end plate 20. So, the plate retaining means 40 is provided to the at least one end mounting plate 50.

[0122] To implement the plate retaining means 40 in Fig.2, the plate retaining means 40 includes a nut 42a and a bolt 42b, more specifically a pair of nuts 42a and a pair of bolts 42b. The pair of bolts 42b are provided symmetrically relative to a longitudinal axis of the at least one end plate 20. Additionally, the elastic member 41 comprises at least one spring arranged over the bolt 42b, between the nut 42a and the at least one end plate 20. One coil spring is used as the elastic member 41 over each of the pair of bolts 42b, and the coil springs abut against the at least one end mounting plate. For each spring, the nut 42a will prevent it from leaving its position over the bolt 42b.

[0123] Due to the positioning of the bolts 42b with their associated elastic members 41 above the middle line of the at least one end plate as seen in the vertical direction, a pivot motion of the at least one end plate 20 is obtained. Furthermore, due to the pair of bolts being provided symmetrically relative to the longitudinal axis of the at least one end plate 20, the elastic force applied by the springs will be done in a symmetric manner and the at least one end plate 20 may be pulled in a straight manner.

[0124] When the restoring force of the springs pulls the at least one end plate 20 towards the first extremity 10a of the profile module, a plurality of internal protrusions 23 configured for cooperating with an internal peripheral edge of the profile module 10 will allow obtaining a desired positioning of the at least one end plate 20 over the first extremity 10a of the profile module.

[0125] Figure 3 displays a perspective view of an embodiment of an end mounting plate according to the invention. The end mounting plate 50 is for coupling to an end of a profile module, for example,the profile module of Figs.l & 2. Further, the end mounting plate 50 is for serving as mounting support to an end plate of the profile module. The end mounting plate 50 comprises: a base plate 51; a first lateral wing 52; and a second lateral wing 53.

[0126] The base plate 51 extends between a first extremity and a second extremity opposite thereof. The first lateral wing 52 extends away from the first extremity of the base plate 51 substantially perpendicularly with respect to the base plate 51. The second lateral wing 53 extends away from the second extremity of the base plate 51 substantially perpendicularly with respect to the base plate 51. The second lateral wing 53 faces the first lateral wing 52. To mount the end plate to the end mounting plate 50, at least one through-hole, a pair of through-holes 51a in the embodiment of Fig.3, is employed to pass fixing means therethrough. When using the end mounting plate 50, the base plate 51 is positioned in a plane substantially coinciding with a section of the profile module, at an extremity thereof.

[0127] The first lateral wing 52 and the second lateral wing 53 are configured for being inserted into the end of the profile module. More details on the insertion and fixation of the end mounting plate 50 to the profile module are described with reference to Figs.4a & 4b.

[0128] The first lateral wing 52 includes a first fixation slot 54 extending from a first edge of the first lateral wing 53 along a first width of the first lateral wing 53. The first fixation slot 54 is configured for cooperating with a first fixation means such as to fix the end mounting plate 50 relative to the profile module. The second lateral wing 53 includes a second fixation slot 55 extending from a second edge of the second lateral wing 53 along a second width of the second lateral wing 53. The second fixation slot 55 is configured for cooperating with a second fixation means such as to fix the end mounting plate 50 relative to the profile module. Thus, when using the end mounting plate 50, the first lateral wing 52 and the second lateral wing 53 are positioned in planes substantially parallel to lateral sides of the profile module. The skilled person will furthermore understand that the first width of the first lateral wing 52 and the second width of the second lateral wing 53 extend both in a plane substantially parallel to the base plate 51 ; and it follows that a first thickness of the first lateral wing 52 and a second thickness of the second lateral wing 53 correspond to the smallest of the three dimensions (width, length, thickness).

[0129] In the embodiment of Fig.3, the first fixation slot 54 of the first lateral wing and the second fixation slot 55 of the second lateral wing each extend into a spring slot 56 configured for allowing an elastic extension of the first lateral wing 52 and of the second lateral wing 53, respectively, in a direction substantially perpendicular to the base plate 51.

[0130] As shown in Fig.3, the first fixation slot 54 and the second fixation slot 55 each include a pulling corner 57 at the first edge of the first lateral wing 52 and at the second edge of the second lateral wing 53, respectively, said pulling corner 57 being defined by a rounded and / or angled profile.Also, in Fig.3, the first extremity of the base plate 51 joining with the first lateral wing 52 and the second extremity of the base plate 51 joining with the second lateral wing 53 each comprises a plurality of pliability apertures 58 configured for increasing a pliability of a material of the base plate 51. Preferably, the base plate 51, the first lateral wing 52, and the second lateral wing 53 are integrally formed. Typically, the end mounting plate 50 may be made from metal.

[0131] Figures 4a & 4b depict a perspective view of a main housing element of a profile module, as well as a perspective view of parts of a luminaire trunking system according to the present invention. Fig.4b depicts notably the same end mounting plate 50 as described with reference to Fig.3. The main housing element 13 shown in Fig.4a is the same as the one described with reference to Figs.l & 2.

[0132] As shown in Fig.4b, to affix the end mounting plate 50 to the main housing element 13 of the profile module, the first fixation means comprises a first bolt 61 which is configured for extending along a length greater than an engagement length of the first bolt 61 relative to the first fixation slot 55. The second fixation means comprises a second bolt 63 and is configured for extending along a length greater than an engagement length of the second bolt 63 relative to the second fixation slot 55. Preferably, a ratio of an engagement length of the first bolt 51 over a depth of the first fixation slot 54 is between 60 and 90%, more preferably between 70 and 80%. The same consideration with respect to the first fixation means and the first fixation slot 54 as mentioned above also apply to the second fixation means and to the second fixation slot 55.

[0133] To keep the first lateral wing 52 and the second lateral wing 53 in place laterally, in the embodiment of Fig.4a, the main housing element 13 of the profile module includes a plurality of plate insertion rails 14 configured for guiding and maintaining the end mounting plate 50 inserted into the profile module 10. More specifically, a plate insertion rail of the plurality of plate insertion rails 14 is formed by a pair of walls extending substantially parallel to each other. Another plate insertion rail is implemented opposite the plate insertion rail of the plurality of plate insertion rails 14 so that the lateral wings (first and second) 52, 53 of the end mounting plate 50 are engaging with the plurality of plate insertion rails 14 on both of their respective edges. Depending on embodiments, the plurality of plate insertion rails 14 may be oriented vertically or horizontally, vertically in Fig.4a, relative to a mounting position of the luminaire trunking system.

[0134] The first fixation means of the embodiment of Fig.4b also includes a first nut 62 configured for cooperating with the first bolt 61, and the second fixation means includes a second nut 64 configured for cooperating with the second bolt 63. The profile module 10 further include a plurality of nut insertion rails 15 configured for guiding and maintaining the first nut 62 and the second nut 64, respectively, inserted into the profile module 10. More specifically, the first nut 62and the second nut 64 have parallelepipedal shapes, and the plurality of nut insertion rails 15 are provided in alignment with the plurality of plate insertion rails 14.

[0135] To couple the end coupling plate 50 to the profile module 10, the first and second lateral wings 52, 53 are first inserted into the plurality of insertion rails 14 of the profile module. The first and second nuts 62, 64 are then inserted into the plurality of nut insertion rails 15 of the profile module 10 and the first and second lateral wings 52, 53 are fixed in place using the first and second bolts 61, 63 being tightened to the first and second nuts 62, 64 and engaging with the first and second fixation slots 54, 55 of the first and second lateral wings 52, 53, respectively. The extremities of the first and second bolts 61, 63 will be pushing against the pulling corners 57 (cf. Figure 3) of the end mounting plate 50, thereby closing the gap between the end mounting plate 50 and the extremity 10a of the profile module, helped by the elastic displacement and the restoring force of the spring slots 56 (cf. Figure 3).

[0136] Figure 5 exhibits an exploded view of an embodiment of an end mounting plate and an end plate according to the present invention. The end mounting plate 50’ is for coupling to an end of a profile module, for example, the profile module of Figs.l & 2. Further, the end mounting plate 50’ is for serving as mounting support to the end plate 20’ of the profile module. The end mounting plate 50’ comprises: a base plate 51’; a first lateral wing 52’; and a second lateral wing 53’.

[0137] The base plate 51 ’ extends between a first extremity and a second extremity opposite thereof. The first lateral wing 52’ extends away from the first extremity of the base plate 51’ substantially perpendicularly with respect to the base plate 51’. The second lateral wing 53’ extends away from the second extremity of the base plate 51 ’ substantially perpendicularly with respect to the base plate 51’. The second lateral wing 53’ faces the first lateral wing 52’. To mount the end plate to the end mounting plate 50’, at least one through-hole, a pair of through-holes 51a in the embodiment of Fig.5, is employed to pass fixing means therethrough.

[0138] The first lateral wing 52’ and the second lateral wing 53’ are configured for being inserted into the end of the profile module.

[0139] The first lateral wing 52’ includes a first fixation slot (not shown) extending from a first edge of the first lateral wing 53’ along a first width of the first lateral wing 53’. The first fixation slot is configured for cooperating with a first fixation means such as to fix the end mounting plate 50’ relative to the profile module. In the embodiment of Fig.5, the first fixation slot is configured for cooperating with a first grub screw included by the first fixation means. In order to do so, a bottom of the first fixation slot is triangular. When tightening the first grub screw, a conical tip of the first grub screw will engage with the triangular bottom of the first fixation slot. The second lateral wing 53’ includes a second fixation slot 55’ extending from a second edge of the second lateral wing 53’ along a second width of the second lateral wing 53’. The second fixation slot 55’is configured for cooperating with a second fixation means such as to fix the end mounting plate 50’ relative to the profile module. In the embodiment of Fig.5, the second fixation slot 55’ is configured for cooperating with a second grub screw included by the second fixation means. In order to do so, a bottom of the second fixation slot 55’ is triangular. When tightening the second grub screw, a conical tip of the second grub screw will engage with the triangular bottom of the second fixation slot 55.

[0140] A plate retaining means 41’, 42a’, 42b’ is provided to the at least one end mounting plate 50’, and is configured for retaining the at least one end plate 20 in contact with a first extremity of the profile module. The at least one end plate 20’ is L-shaped.

[0141] The plate retaining means 41’, 42a’, 42b’ includes an elastic member 41’ configured for allowing an elastic displacement of the at least one end plate 20’ away from the profile module along a main axis of the profile module. Preferably, and as shown in Fig.5, the plate retaining means 40’ is provided to a half of the at least one end plate 20’ away from a profile element of the profile module (cf. Figure 2), i.e. above a middle line of the at least one end plate 20’ as seen in a vertical direction.

[0142] To implement the plate retaining means 40’ in Fig.5, the plate retaining means 41’, 42a’, 42b’ includes a nut 42a’ and a bolt 42b’, more specifically a pair of nuts 42a’ and a pair of bolts 42b’ (headless). The pair of bolts 42b’ are provided symmetrically relative to a longitudinal axis of the at least one end plate 20’. Additionally, the elastic member 41’ comprises at least one spring arranged over the bolt 42b’, between the nut 42a’ and the at least one end plate 20’. One coil spring is used as the elastic member 41’ over each of the pair of bolts 42b’, and the coil springs abut against the base plate 51’ of the at least one end mounting plate 50’. For each spring, the nut 42a’ will prevent it from leaving its position over the bolt 42b’.

[0143] Whilst the principles of the invention have been set out above in connection with specific embodiments, it is to be understood that this description is merely made by way of example and not as a limitation of the scope of protection which is determined by the appended claims.

Claims

CLAIMS1. A luminaire trunking system comprising:a profile module (10) including a light compartment provided with a light source, said profile module (10) extending between a first extremity (10a) and a second extremity; a profile element, such as a light diffuser (30), said profile element (30) extending from the first extremity (10a) in a direction of the second extremity and configured for being mounted to the profile module (10);at least one end plate (20) provided to the first extremity (10a) of the profile module (10), said at least one end plate (20) being L-shaped;wherein an expansion gap is formed between an internal surface (21) of the at least one end plate and a facing extremity (30a) of the profile element.

2. The luminaire trunking system according to claim 1 , wherein the at least one end plate (20) is made of a first material and the profile element is made of a second material, said first material having a thermal expansion coefficient different, preferably smaller, than the second material.

3. The luminaire trunking system according to claim 2, wherein the at least one end plate (20) is made of metal, preferably of aluminum; and wherein the profile element, such as the light diffuser (30), is made of plastic preferably of polycarbonate.

4. The luminaire trunking system according to any one of the previous claims, wherein the at least one end plate (20) comprises an internal raised portion (22) extending substantially perpendicular from the at least one end plate (20) and configured for cooperating with an internal peripheral edge of the light compartment.

5. The luminaire trunking system according to any one of the previous claims, further comprising a plate retaining means (40) configured for retaining the at least one end plate (20) in contact with the first extremity (10a), said plate retaining means (40) including an elastic member (41) configured for allowing an elastic displacement of the at least one end plate (10) away from the profile module (10) along a main axis of the profile module (10).

6. The luminaire trunking system according to claim 5, further comprising at least one end mounting plate (50) coupled to the profile module at the first extremity (10a) thereof; andwherein the plate retaining means (40) is provided to the at least one end mounting plate (50).

7. The luminaire trunking system according to claims 5 or 6, wherein the plate retaining means (40) includes a nut (42a) and a bolt (42b).

8. The luminaire trunking system according to claim 7, wherein the elastic member (41) comprises at least one spring (41) arranged over the bolt (42b), between the nut (42a) and the at least one end plate (20).

9. The luminaire trunking system according to any one of claims 5-8, wherein the at least one end plate (20) is defined by a long vertical portion 10a of the L-shape and a bottom horizontal portion 20b of the L-shape; wherein the long vertical portion 10a includes an upper half portion and a lower half portion, said lower half portion being located next to the bottom horizontal portion 20b; and wherein the plate retaining means (40) is provided to the upper half portion of the long vertical portion 10a.

10. The luminaire trunking system according to any one of the previous claims, wherein a bottom horizontal portion 20b of the L-shape of the at least one end plate (20) is configured for being arranged below the profile element in a mounted state of the luminaire trunking system such that the facing extremity (30a) of the profile element is located directly above the bottom horizontal portion 20b as seen in a vertical direction.IL A luminaire trunking system comprising:a profile module (10), optionally including a light compartment provided with a light source, said profile module (10) extending between a first extremity (10a) and a second extremity;a profile element, such as a light diffuser (30), said profile element extending from the first extremity (10a) in a direction of the second extremity and configured for being mounted to the profile module (10);at least one end plate (20) provided to the first extremity (10a), said at least one end plate (20) being L-shaped;a plate retaining means (40) configured for retaining the at least one end plate (20) in contact with the first extremity (10a), said plate retaining means (40) including an elastic member (41) configured for allowing an elastic displacement of the at least oneend plate (10) away from the profile module (10) along a main axis of the profile module (10).

12. An end mounting plate (50) for coupling to an end of a profile module, comprising: a base plate (51) extending between a first extremity and a second extremity opposite thereof;a first lateral wing (52) extending away from the first extremity of the base plate (51) substantially perpendicularly with respect to the base plate (51);a second lateral wing (53) extending away from the second extremity of the base plate (51) substantially perpendicularly with respect to the base plate (51), said second lateral wing (53) facing the first lateral wing (52);wherein the first lateral wing (52) and the second lateral wing (53) are configured for being inserted into the end of the profile module;wherein the first lateral wing (52) includes a first fixation slot (54) extending from a first edge of the first lateral wing (52) along a first width of the first lateral wing (52), said first fixation slot (54) configured for cooperating with a first fixation means such as to fix the end mounting plate (50) relative to the profile module;wherein the second lateral wing (53) includes a second fixation slot (55) extending from a second edge of the second lateral wing (53) along a second width of the second lateral wing (53), said second fixation slot (55) configured for cooperating with a second fixation means such as to fix the end mounting plate (50) relative to the profile module.

13. The end mounting plate according to claim 12, wherein the first fixation slot (54) of the first lateral wing and the second fixation slot (55) of the second lateral wing each extend into a spring slot (56) configured for allowing an elastic extension of the first lateral wing (52) and of the second lateral wing (53), respectively, in a direction substantially perpendicular to the base plate (51).

14. The end mounting plate according to claims 12 or 13, wherein the first fixation means comprises a first bolt, and wherein the first fixation slot (54) is configured for extending along a length greater than an engagement length of the first bolt relative to the first fixation slot (54); and wherein the second fixation means comprises a second bolt; and wherein the second fixation slot (55) is configured for extending along a length greater than an engagement length of the second bolt relative to the second fixation slot (55).

15. The end mounting plate according to any one of claims 12-14, wherein the first fixation slot (54) and the second fixation slot (55) each include a pulling corner (57) at the first edge of the first lateral wing (52) and at the second edge of the second lateral wing (53), respectively, said pulling corner (57) being defined by a rounded and / or angled profile.

16. The end mounting plate according to any one of claims 12-15, wherein the first extremity of the base plate (51) joining with the first lateral wing (52) and the second extremity of the base plate (51) joining with the second lateral wing (52) each comprises a plurality of pliability apertures (58) configured for increasing a pliability of a material of the base plate (51).

17. The end mounting plate according to any one of claims 12-16, wherein the base plate, the first lateral wing (52) and the second lateral wing (53) are integrally formed.

18. The end mounting plate according to any one of claims 12-17, wherein the first fixation slot (54) extends over at least 30% of the first width of the first lateral wing (52) and wherein the second fixation slot (55) extends over at least 30% of the second width of the second lateral wing (53).

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