EP2990723B1 - Lighting device including an improved mounting - Google Patents

Lighting device including an improved mounting Download PDF

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Publication number
EP2990723B1
EP2990723B1 EP15183258.1A EP15183258A EP2990723B1 EP 2990723 B1 EP2990723 B1 EP 2990723B1 EP 15183258 A EP15183258 A EP 15183258A EP 2990723 B1 EP2990723 B1 EP 2990723B1
Authority
EP
European Patent Office
Prior art keywords
lighting device
panel
support
seal
emitting diodes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15183258.1A
Other languages
German (de)
French (fr)
Other versions
EP2990723A1 (en
Inventor
Michel Petit
Didier Jean Charles Marie PETIT-BRISSON
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Energies Alternatives & Solaires Solutions
Original Assignee
Energies Alternatives & Solaires Solutions
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR1458159A external-priority patent/FR3025294B1/en
Priority claimed from FR1458160A external-priority patent/FR3025292B1/en
Application filed by Energies Alternatives & Solaires Solutions filed Critical Energies Alternatives & Solaires Solutions
Publication of EP2990723A1 publication Critical patent/EP2990723A1/en
Application granted granted Critical
Publication of EP2990723B1 publication Critical patent/EP2990723B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V27/00—Cable-stowing arrangements structurally associated with lighting devices, e.g. reels 
    • F21V27/02—Cable inlets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/89—Metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/30—Pivoted housings or frames
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/001—Arrangement of electric circuit elements in or on lighting devices the elements being electrical wires or cables
    • F21V23/002—Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • F21V23/0471—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor detecting the proximity, the presence or the movement of an object or a person
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/005—Sealing arrangements therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a lighting device with light emitting diodes incorporating an improved support.
  • the invention relates to a lighting device according to claim 1
  • This configuration provides a simple and rigid support that allows to route the cable between the two plates.
  • the transparent cover 20 is not more detailed because it is known to those skilled in the art. Its geometric and dimensional characteristics vary depending in particular on the optical characteristics sought, the electronic card and the components present on this card.
  • the electronic card support 16 comprises a section 26 with a constant section in a direction 28 (represented by a center line).
  • the section comprises a rectilinear portion which corresponds, along the length of the profile 26, to the flat surface 18 and a plurality of alternating hollow and projecting shapes preferably distributed symmetrically with respect to a median axis perpendicular to the rectilinear portion. .
  • the section of the section 26 may vary depending on the desired heat exchange.
  • the profile 26 is hollow and comprises inside a conduit 32 which opens at each end 34 of said profile which are in planes approximately perpendicular to the flat surface 18.
  • This conduit 32 can be used for storing electrical energy storage means such as batteries, accumulators or others. Since the duct 32 is opening at both ends, naturally a flow of air is obtained which contributes to cooling the means of accumulation of electrical energy.
  • the electronic card support 16 comprises two plates 36, one for each end of the profile 26.
  • Each plate 36 is connected to the profile 26 by connecting means 38 and at least one shim 40 is provided to keep apart the plate 36 and the 26.
  • the connecting means 38 comprise several screws, for each of them, the plate 36 and the shim 40 each comprising a through hole, and the profile 26 a tapped hole.
  • the lighting device comprises a housing 42 containing at least one sensor 44 among a presence sensor, a brightness sensor, said housing 42 being remote from the electronic card 12 supporting the light-emitting diodes 14. This configuration allows to limit the risks of disturbing the operation of the sensor 44.
  • the housing 42 is supported by one of the plates 36. This configuration makes it possible to optimize the operation of the sensors, the housing 42 comprising a first face 46 facing towards the ground which is adapted for a presence sensor and a second face 48 upward which is suitable for a brightness sensor.
  • the openings made in the housing 42 for the sensors and the other elements can be grouped on the same face or arranged on different faces.
  • the housing 42 comprises at least one opening on at least one face.
  • the plate 36 provides the electronic card support function and comprises a face against which is pressed a second electronic card 50 supporting the sensor or sensors 44 and other electronic components.
  • the housing 42 has a recessed shape and a peripheral edge 52 pressed against the plate 36 so as to delimit with the latter a chamber 54 "sealed” in which is placed the second electronic card 50.
  • the lighting device comprises two electronic cards 12 and 50.
  • the electronic functions that vary according to the lighting power are implemented on the first electronic card 12 supporting the light-emitting diodes 14 and the electronic functions that do not vary according to the lighting power are implemented on the second card.
  • all the electronic functions can be grouped together on the same electronic card.
  • the lighting device comprises a "sealed" enclosure 24, 54 delimited by a support 16 or 36 and a cover (the transparent cover 20 or the housing 42) which comprises a peripheral edge pressed against the support and connected to the latter by a connection 56 sealed to air and water, said enclosure containing an electronic card 12 or 50.
  • a peripheral seal 58 is interposed between the support 16 or 36 and the cover 20 or 42.
  • the peripheral edge of the cover comprises a groove with a U-shaped cross section towards the support, which extends over the entire periphery and houses the peripheral seal.
  • the "sealed" enclosure 24, 54 comprises at least one opening 60 making it possible to communicate the inside and the outside of said "sealed” enclosure 24, 54, said opening 60 being closed off by a tight wall 62 with water and permeable to air.
  • the wall 62 is a very low-mesh fabric, such as for example a fabric sold by the company "Gore".
  • the water-tight and breathable wall 62 makes it possible to evacuate the surplus air and to avoid an overpressure when the temperature rises and the air present inside the enclosure " Waterproof 24, 54 expands.
  • the lighting device comprises at least one electrical cable passage 64 for conveying an electrical cable 66 between the inside and the outside of the "sealed" enclosure 24, 54.
  • an electric cable 66 has a circular section.
  • An electrical cable passage 64 includes a seal 68 (visible in detail on the Figures 4A and 4B ) of deformable material which comprises a through conduit 70 connecting a first end 72 and a second end 74 of the seal 68 and a side surface 76 approximately conical and concentric to the through conduit 70 and a seal support 78 (visible in detail on the Figures 9A and 9B ) traversed by a conical conduit 80 configured to receive the seal 68.
  • a seal 68 visible in detail on the Figures 4A and 4B
  • deformable material which comprises a through conduit 70 connecting a first end 72 and a second end 74 of the seal 68 and a side surface 76 approximately conical and concentric to the through conduit 70 and a seal support 78 (visible in detail on the Figures 9A and 9B ) traversed by a conical conduit 80 configured to receive the seal 68.
  • the through conduit 70 of the seal 68 has a convergent portion and a divergent portion from one end to the other, with a reduced section 82 (junction between the convergent and divergent portions).
  • the reduced section 82 has a diameter equal to the outside diameter of the electrical cable 66 to allow the seal 68 to slide on the electrical cable 66.
  • the seal support 78 comprises a bearing face 84 parallel to the electronic card 12, 50 and oriented towards the latter or towards the enclosure (24, 54).
  • the duct 80 extends from an outer face 86 to the bearing face 84 and has a conical shape with an axis perpendicular to the bearing face 84, the duct 80 having a larger section at the face support 84 only at the outer face 86.
  • the seal support 78 is pressed against the electronic card 12, 50 or an interposed plate 36.
  • the electronic card 12, 50 and the optional interposed plate 36 respectively comprise a through hole 88, 90 with a section equal to or slightly greater than that of the electric cable 66.
  • the electrical cable passage 64 comprises compression means for compressing the gasket 68 between the gasket support 78 and the electronic card 12, 50.
  • these compression means comprise at least one bolt 92 which passes through the joint support 78, a possible interposed plate 36 and the electronic card 12 or 50.
  • the invention is not limited to this variant for the compression means which may take the form of one or more screws, one or more rivets or one or more other connecting means.
  • the duct 80 and the gasket 68 are dimensioned so that in the absence of compression as illustrated in FIG. Figure 9A when the side surface 76 of the gasket 68 is in contact with the gasket support 78, the gasket 68 is protruding from the support face 84 of the gasket support 78.
  • the map 12 or the interposed plate 36 is pressed against the bearing face 84 and exerts a longitudinal compressive force (perpendicular to the bearing face 84) on the seal 68 which is positioned in the conduit 80.
  • the seal 68 exerts a centripetal compression force (perpendicular to the longitudinal direction) on the electric cable 66 which strengthens the seal.
  • the joint support 78 remains unchanged. Only the gasket 68 is adapted to the electric cable. Thus, it is possible to have several sizes for the seals 68, the section of the through duct 70 being different from one format to another, the seals 68 having all the identical side surfaces.
  • the seal support 78 and the plate 36 are two separate parts, the plate 36 being interposed between the seal support 78 and the electronic card 50.
  • the seal support 78 also performs the function of hold 40.
  • the seal support 78 has a cylindrical shape and comprises at least one branch 94, in this case three branches 94 which each comprise at their ends a ring 96 which forms a spacer and which is traversed by the connecting means 38 .
  • the seal 68 has a Shore A hardness of the order of 50 to obtain a good radial compression of the electric cable 66.
  • the seal 68 is made of thermoplastic elastomer, such as SEBS.
  • the electronic card 12 or 50 can be shifted with respect to the cable passage 64 and does not include passage holes 88, 90.
  • the lighting device comprises a compression plate distinct from the electronic board for compressing the gasket 68.
  • the lighting device comprises at least one compression plate which may be the electronic card 12 or 50, the plate 36 or another plate, said compression plate comprising a through hole 88 with a section equal to or slightly greater than that of the electric cable 66.
  • the one or more electrical cables can be inserted into a tube, the gasket 68 being compressed against the outer wall of the tube in which the electric cable or cables pass. Therefore, the invention is not limited to the passage of at least one electrical cable.
  • the invention allows the passage of at least one element comprising at least one electrical cable, this element being either the electric cable or a tube containing at least one electric cable.
  • the seal 68 comprises a single through conduit 70 or more conduits 70 each intended for the passage of an element comprising at least one electrical cable.
  • the cable passage according to the invention allows its mounting from a single face, namely the face on which the light emitting diodes are reported.
  • a perfectly tight cable passage even if it is difficult to access such as for example if it is remote from the ends of a profile 26 or if the support 16 is already fixed and its rear face (opposite to that receiving the cover 20) is no longer accessible.
  • the housing 42 has an opaque wall and comprises an opening 98 intended for the presence sensor, visible in detail on the figure 5 .
  • This opening 98 is closed by a cap 100.
  • the cap 100 comprises a cylindrical duct 102 surmounted by a head 104.
  • the cylindrical duct 102 has a diameter that increases slightly from its end connected to the head 104 to its other end intended to come inside the housing 42.
  • the head 104 comprises a cylindrical lower portion 106 surmounted by a dome 108 of a transparent material for the light.
  • the cylindrical lower portion 106 of the head has a diameter greater than that of the cylindrical duct 102.
  • the cylindrical duct 102 is connected to the cylindrical lower part 106 of the head by a radial wall 110 which extends in a plane perpendicular to the axes of the cylindrical duct 102 and the cylindrical lower portion 106 of the head.
  • the lighting device comprises a seal 112 interposed between the cap 100 and the edge 114 of the wall of the housing 42 defining the opening 98.
  • This seal 112 is illustrated in detail on the figure 6 . It comprises a cylindrical base 116 surmounted by a cylindrical head 118 which has an outside diameter greater than that of the cylindrical base which has a diameter approximately equal to that of the opening 98.
  • the cylindrical base 116 comprises outside and at its lower end a flange 119 whose outer diameter is greater than that of the opening 98.
  • This flange 119 is separated from the head 118 by a distance approximately equal to the thickness of the edge 114 of the wall of the housing.
  • the flange 119 has a conical shape to promote its passage through the opening 98.
  • the base and the head are traversed by a conduit 120 configured to house the cap 100.
  • This conduit 120 comprises in the upper part a countersink 122 whose inner diameter is equal to that of the head 104 of the cap 100.
  • the conduit 120 comprises under the countersink 122 a median portion 124 with a diameter which is reduced to an end portion 126 which has a constant diameter.
  • the height of the middle and end portions 124 and 126 is smaller than the height of the cylindrical duct 102 of the cap 100 so that the latter protrudes from the gasket 112 when the radial wall 110 of the cap 100 comes against the bottom 128 of the counterbore 122.
  • the cylindrical duct 102 of the cap 100 has, at its lower end, an outside diameter greater than that of the end portion 126 so that the cap 100 is held in the seal 112.
  • the wall 129 of the seal head 112 surrounding the counterbore 122 has a thin thickness of the order of 1 to 3 mm.
  • the seal 112 is made of deformable material. It has a Shore A hardness of the order of 40. According to one embodiment, the seal 112 is made of thermoplastic elastomer, such as for example in SEBS.
  • the bottom 128 of the countersink 122 comprises a circular rib 130 projecting which surrounds the duct 120.
  • This rib 130 has a height of the order of 0.5 to 1 mm and a thickness of the order of 0.5 to 1 mm. . It is spaced from the conduit 120 by a distance of less than 1 mm.
  • This circular rib 130 promotes the maintenance of the cap 100 in the seal 112 and improves the seal between these two elements.
  • the radial wall 110 of the cap crushes the circular rib 130.
  • the crushing of this circular rib 130 causes the deformation of the wall 129 of the seal head 112 whose end upper deforms towards the inside of the joint as illustrated by the arrows 132.
  • the seal 112 exerts a compressive force on the head of the cap 100 which improves the seal.
  • the seal 122 may also be used to improve the seal between a cap and the edge of an opening in the transparent cover 20.
  • the support 16 is a panel 134 which comprises a cellular structure 136 interposed between two flat plates 138, 138 '.
  • the sandwich structure of the panel 134 gives it high mechanical properties.
  • This panel 134 is metallic, for example aluminum alloy.
  • the honeycomb structure 136 comprises a plurality of ducts having axes parallel and perpendicular to the plates 138, 138 '. Each duct is delimited by at least one wall 140 perpendicular to the plates 138, 138 '.
  • the honeycomb structure 136 is a honeycomb structure.
  • the invention is not limited to this hexagonal form.
  • the ducts of the honeycomb structure may have circular, square or other sections.
  • the panel 134 has two flat parallel faces which improves its integration.
  • the electronic card 148 is pressed against a first face 138E of one of the two plates 138 in contact with the cellular structure 136 which contributes to the heat transfer.
  • the plate 138 is interposed between the honeycomb structure 136 and each electronic card 148.
  • the plate 138 being completely flat, the surface contact between the electronic card 148 and the plate 138 ensures optimal heat transfer between the electronic card 148 and the panel 134.
  • the walls 140 of the cellular structure 136 ensure the heat transfer between the two plates 138, 138 '.
  • the heat calories are evacuated via the plate 138 '.
  • the walls 140 have a thickness of the order of 0.2 to 2 mm.
  • the plates 138, 138 ' have a thickness of the order of 0.5 to 3 mm.
  • the panel 134 has a thickness of 10 to 50 mm depending on its area.
  • the ducts of the honeycomb structure 136 each have an area of the order of 1 cm 2 .
  • the supports of the prior art are designed to have a significant thermal inertia to evacuate the heat generated by the light emitting diodes. With against feet, the support of the invention has a low thermal inertia which gives it a great reactivity to evacuate the calories.
  • the panel 134 is industrially produced in large quantities because it is intended for other applications. Therefore, its cost is lower than a support of the prior art.
  • honeycomb structure is perfectly connected to the plates 138, 138 'so that the cells are sealed.
  • the lighting device comprises a system for regulating the heat emitted by the light-emitting diodes.
  • the lighting device comprises a control 142 ensuring the regulation of the supply current of the light-emitting diodes 144 and a temperature sensor 146 implanted in the vicinity of the light-emitting diodes 144 which is connected to the control 142.
  • the control 142 regulates the supply current of the light-emitting diodes 144 so that the temperature measured by the temperature sensor 146 remains below a threshold temperature.
  • this threshold temperature is lower than the maximum operating temperature of the light emitting diodes.
  • the threshold temperature is of the order of 65 °.
  • the temperature sensor 146 is fixed on the electronic card 148 supporting the light-emitting diodes 144.
  • FIGS. 14A, 14B, 15A, 15B, 15C , 16A, 16B, 16C, 17 and 18 variants of routing of a power cable in the support 16 have been illustrated.
  • the support 16 of the lighting device comprises a panel 134 with a honeycomb structure 136 interposed between two flat plates 138, 138 ', each plate 138, 138' comprising an outer face 138E, 138'E and an inner face 1381, 138'I oriented towards the honeycomb structure 136.
  • the lighting device comprises an electronic card 148 pressed against the outer face 138E and covered by a cover 150 which comprises a peripheral edge sealingly connected to the outer face 138E.
  • a seal 152 is interposed between the peripheral edge and the outer face 138E.
  • the panel 134 comprises at its peripheral edge a peripheral seal 154 which extends over the entire length of the peripheral edge and between the two plates 138, 138 '.
  • the peripheral seal 154 is made of resin and obtained for example by overmolding.
  • the lighting device comprises a power cable 156 connected to the electronic card.
  • the electronic card comprises a through hole 158.
  • the power cable 156 passes through the peripheral seal 154 to be disposed between the two plates 138, 138 '.
  • the power cable 156 passes through a cover 187 to be disposed between the two plates 138, 138 '.
  • the illumination device comprises a gland 160 surrounding the power cable 156, positioned at the peripheral seal 154 or the cover 187 and configured to allow said power cable 156 to traverse the peripheral seal. 154 or the hood 187 in a sealed manner.
  • the cable gland 160 includes a first portion with clamping members and a second portion that is screwed to the outside of the first portion so as to tighten the clamping members around the power cable 156, the first portion of the gland being embedded in the peripheral seal 154 or integral with the cover 187.
  • the panel 134 comprises a groove 162 which extends from the peripheral edge of the panel to approximately plumb with the through hole 158 of the electronic card 148.
  • This groove 162 has a depth less than the thickness of the panel 134 and extends from the outer face 138E of the first plate 138 and at least a portion of the height of the honeycomb structure 136.
  • the groove 162 extends from the face outer 138E of the first plate 138 to the inner face 138 'I of the second plate 138'.
  • the groove 162 has a width and a depth adapted to allow the positioning of the supply cable 156 in the cellular structure 136.
  • the groove 162 is filled with a filling material 164 ensuring fluid tightness.
  • the filling material 164 is a resin, in particular the same as that used for the peripheral seal 154.
  • the outer surface 166 of the filling material 164 is surfaced so as to obtain a flat surface substantially in the same plane as the outer face 138E of the plate 138, to obtain an optimum seal with the seal 152.
  • the panel 134 comprises a groove 168 which extends from the peripheral edge of the panel 134 to a termination 170 offset outwardly relative to the peripheral edge of the cover 150. According to this configuration, the bleeding 168 is not secante with the seal 152 of the cover 150, which tends to improve the seal.
  • the panel 134 comprises at least one conduit 172 which extends from the termination 170 of the groove 168 to the outer face 138E of the plate 138, at the right of the position of the through hole 158 of the electronic card.
  • the duct 172 comprises a first perforated section 174 in the honeycomb structure 136 and approximately parallel to the plates 138, 138 'and a second perforated section 176 which extends from the outer face 138E of the plate 138 until the first perforated section 174.
  • These perforated sections 174 and 176 have a diameter sufficient to allow the routing of the supply cable 156.
  • the groove 168 is filled with a filling material 178 ensuring fluid tightness.
  • the filling material 178 is a resin, in particular the same as that used for the peripheral seal 154.
  • the bleeding 168 has a width and a depth adapted to allow the positioning of the supply cable 156 in the cellular structure 136.
  • the panel 134 comprises a cavity 180 situated between the peripheral edge of the panel 134 and the cover 150.
  • This cavity 180 makes it possible to house at least one electrical or electronic element 182, such as for example a connection between two power cables and / or a presence sensor and / or a brightness sensor and / or an electronic card.
  • electrical or electronic element 182 such as for example a connection between two power cables and / or a presence sensor and / or a brightness sensor and / or an electronic card.
  • This cavity 180 is obtained by cutting the plate 138 and the honeycomb structure 136 to the plate 138 'which remains intact.
  • the cavity 180 is delimited by a peripheral edge 184 which extends between the two plates 138 and 138 'and a bottom 186 which corresponds to a portion of the inner face 138' I of the plate 138 '.
  • the peripheral edge 184 of the cavity 180 comprises a peripheral seal 188 which extends over the entire length of the peripheral edge 184 and between the two plates 138, 138 '.
  • the peripheral seal 188 is made of resin and obtained for example by overmolding.
  • the lighting device comprises a cover 187 whose peripheral edge bears against the outer face 138E of the plate 138 all around the periphery of the cavity 180.
  • a seal 190 is interposed between the peripheral edge the cover 187 and the plate 138 to complete the seal.
  • the cover 187 may be made of an opaque or transparent material.
  • the panel 134 For the path of the power cable 156, the panel 134 comprises a first conduit 191 between the peripheral edge of the panel 134 and the cavity 180 and at least a second conduit 192 between the cavity 180 and the through hole 158 of the electronic card.
  • the power cable 156 passes through the peripheral seal 154 positioned over the entire periphery of the panel 134 or a cover 187 via a gland 160 before proceeding between the two plates 138, 138 '. In the presence of a cavity 180, it is not necessary to provide a gland at the peripheral seal 188 of the cavity.
  • a panel may comprise a cavity 180 connected to a plurality of electronic cards.
  • a groove filled with a filling material may be provided to route the power cable 156 of the song panel peripheral 134 to cavity 180.
  • second conduit 192 may be at least partially replaced by a groove filled with filler material.
  • the cable or cables may be positioned in one or more sheaths 194.
  • the sheath may be embedded partially or entirely in the filling material.
  • a cable that passes into the sheath 194 can be removed or changed.
  • the lighting device comprises a ribbon of material 196 interposed between the peripheral edge of each cap 150 and the plate 138 to the right of the fixing elements 198 provided for fixing said cap to the panel 134.
  • This ribbon of material 196 allows to increase the thickness of the plate 138 to ensure a satisfactory grip of the fastening elements 198.
  • This ribbon of material 196 is integral with the plate 138 of the panel 134.
  • the material ribbon 196 is made of resin and is obtained by overmolding which makes it possible to obtain a catch between the material ribbon 196 and the plate 138.
  • the peripheral edge of a cover 150 or cover 187 comprises a contact face 200 facing the plate 138.
  • This contact surface 200 comprises a groove 202 for housing a seal 152 or 190 and a recess 204 configured to house the material ribbon 196.
  • the material ribbon 196, the filling material, the peripheral seals 154 and 188 are made from the same resin and are obtained during the same overmolding operation.
  • this fastener 206 for connecting the panel 134 to a support 214.
  • this fastener 206 comprises at least one hinge for orienting the panel 134.
  • the fastener 206 comprises two U-shaped flats 208 and at least one cylinder 210 positioned between the flats of the flats at the base of the U-shape.
  • a first branch 212 is plated. and fixed against the outer face 138E of the plate 138 secured to the panel and a second branch 212 'is plated and fixed against the outer face 138'E of the plate 138'.
  • Fasteners 216 make it possible to secure the branches 212 and 212 'to the panel 134.

Description

La présente invention se rapporte à un dispositif d'éclairage à diodes électroluminescentes intégrant un support amélioré.The present invention relates to a lighting device with light emitting diodes incorporating an improved support.

On connait d'après le document WO2010/125294 un dispositif d'éclairage à diodes électroluminescentes qui comprend :

  • une plaque support sensiblement plane,
  • une carte électronique fixée sur la plaque support et sur laquelle sont implantées les diodes électroluminescentes et d'autres composants électroniques assurant la gestion du courant électrique d'alimentation des diodes électroluminescentes,
  • un capot transparent qui a une fonction optique et dont le bord périphérique est relié de manière étanche avec la plaque support de manière à enfermer la carte électronique dans une enceinte sensiblement étanche,
  • un diffuseur thermique sous la forme d'un profilé creux comprenant une section sensiblement constante et étirée selon une direction perpendiculaire à la carte électronique, la plaque support étant fixée à une extrémité dudit diffuseur thermique.
We know from the document WO2010 / 125294 a light emitting diode lighting device which comprises:
  • a substantially flat support plate,
  • an electronic card fixed on the support plate and on which are implanted the light-emitting diodes and other electronic components ensuring the management of the electric supply current of the light-emitting diodes,
  • a transparent cover which has an optical function and whose peripheral edge is sealingly connected to the support plate so as to enclose the electronic card in a substantially sealed enclosure,
  • a thermal diffuser in the form of a hollow profile comprising a substantially constant section and stretched in a direction perpendicular to the electronic card, the support plate being attached to one end of said thermal diffuser.

D'autres composants électroniques sont insérés dans le logement formé par le diffuseur thermique et la plaque support.Other electronic components are inserted in the housing formed by the thermal diffuser and the support plate.

Ce dispositif n'est pas pleinement satisfaisant sur les points suivants :

  • Les dispositifs d'éclairage sont soumis à des gradients importants de température compte tenu de la forte élévation de température des diodes électroluminescentes. De plus, dans le cas d'un éclairage extérieur, ces dispositifs sont soumis aux variations climatiques (pluie, chaleur, gel,....). Même si le contact entre le capot transparent et la plaque support est dans un plan ce qui simplifie l'étanchéité, cette dernière n'est pas optimale notamment au niveau des presse-étoupes prévus pour acheminer les câbles d'alimentation jusque dans l'enceinte délimitée par la plaque support et le capot transparent.
  • Les dimensions de la section du profilé du diffuseur thermique variant notamment en fonction du nombre de diodes électroluminescentes et donc de la puissance lumineuse émise par le dispositif d'éclairage, si l'on souhaite développer une gamme de dispositifs d'éclairage avec des puissances d'éclairage différentes il est nécessaire de prévoir autant de variantes de profilés que de variantes de puissances d'éclairage ce qui a nécessairement un impact sur les coûts de production.
  • Selon un autre point, ces dispositifs d'éclairage comprennent généralement des capteurs de présence et de luminosité permettant de moduler l'éclairage. Selon la conception de l'art antérieur, ces capteurs sont implantés sur la carte électronique, à proximité des diodes électroluminescentes, ce qui peut impacter le fonctionnement des capteurs notamment celui de luminosité.
US 2007/0247842 divulgue un dispositif selon la préambule de la revenciation 1. La présente invention vise à remédier aux inconvénients de l'art antérieur en proposant un dispositif d'éclairage à diodes électroluminescentes qui intègre un support amélioré pour la carte électronique.This device is not fully satisfactory on the following points:
  • Lighting devices are subject to significant temperature gradients given the high temperature rise of the light-emitting diodes. In addition, in the case of outdoor lighting, these devices are subject to climatic variations (rain, heat, frost, ....). Even if the contact between the transparent cover and the support plate is in a plane which simplifies the sealing, the latter is not optimal especially at the glands intended to route the power cables into the enclosure delimited by the support plate and the transparent cover.
  • The dimensions of the section of the profile of the thermal diffuser varying in particular according to the number of light-emitting diodes and therefore the light power emitted by the lighting device, if it is desired to develop a range of lighting devices with powers of light. Different lighting it is necessary to provide as many variants of profiles as variants of lighting powers which necessarily has an impact on production costs.
  • According to another point, these lighting devices generally include presence and brightness sensors for modulating the lighting. According to the design of the prior art, these sensors are located on the electronic card, close to the light emitting diodes, which can impact the operation of the sensors including that of brightness.
US 2007/0247842 discloses a device according to the preamble of claim 1. The present invention aims to overcome the drawbacks of the prior art by proposing a light-emitting diode lighting device which incorporates an improved support for the electronic card.

A cet effet, l'invention a pour objet un dispositif d'éclairage selon la revendication 1 Cette configuration permet d'obtenir un support simple et rigide qui permet de faire cheminer le câble entre les deux plaques.For this purpose, the invention relates to a lighting device according to claim 1 This configuration provides a simple and rigid support that allows to route the cable between the two plates.

D'autres caractéristiques et avantages ressortiront de la description qui va suivre de l'invention, description donnée à titre d'exemple uniquement, en regard des dessins annexés sur lesquels :

  • La figure 1 est une vue en perspective d'une partie d'un dispositif d'éclairage selon une variante de l'invention sans carte électronique et sans capot transparent,
  • La figure 2 est une coupe illustrant un boitier prévu à l'extrémité du dispositif d'éclairage de la figure 1,
  • La figure 3 est une vue de face du boitier de la figure 2 montrant par transparence les différents éléments, dont un support de joint représenté en trait fort,
  • Les figures 4A et 4B sont des coupes de deux joints prévus chacun pour le passage d'un câble électrique avec une section différente,
  • La figure 5 est une coupe d'une partie du boitier de la figure 3 illustrant un capuchon avec une paroi transparente,
  • La figure 6 est une coupe d'un joint entourant le capuchon de la figure 5,
  • La figure 7 est une vue de face d'un capot transparent prévu pour recouvrir une carte électronique comprenant au moins des diodes électroluminescentes,
  • La figure 8 est une coupe du capot transparent de la figure 7 rapporté sur un support comprenant un passage de câble électrique,
  • Les figures 9A et 9B sont des coupes illustrant en détails le passage de câble électrique de la figure 8 lors de sa mise en place et à la fin de sa mise en place,
  • La figure 10 est une coupe d'un support pour une carte électronique supportant des diodes électroluminescentes,
  • La figure 11 est une vue en perspective du support de la figure 10 avec un arrachement partiel pour illustrer les différentes couches du support,
  • La figure 12 est un schéma illustrant un système de commande d'un dispositif d'éclairage,
  • La figure 13 est une vue de face illustrant une autre variante de l'invention,
  • La figure 14A est une coupe d'une partie d'un dispositif d'éclairage qui illustre une première variante de l'invention,
  • La figure 14B est une coupe selon la ligne I-I de la figure 14A,
  • La figure 15A est une coupe d'une partie d'un dispositif d'éclairage qui illustre une deuxième variante de l'invention,
  • La figure 15B est une coupe selon la ligne II-II de la figure 15A,
  • La figure 15C est une coupe selon la ligne III-III de la figure 15A,
  • La figure 16A est une coupe d'une partie d'un dispositif d'éclairage qui illustre une troisième variante de l'invention,
  • La figure 16B est une coupe selon la ligne IV-IV de la figure 16A,
  • La figure 16C est une coupe selon la ligne V-V de la figure 16A,
  • La figure 17 est une vue en perspective d'une partie d'un dispositif d'éclairage qui illustre un mode de réalisation d'un système de fixation dudit dispositif,
  • La figure 18 est une vue en perspective d'un dispositif d'éclairage qui illustre un mode de réalisation de l'invention.
Other features and advantages will become apparent from the following description of the invention, a description given by way of example only, with reference to the appended drawings in which:
  • The figure 1 is a perspective view of a portion of a lighting device according to a variant of the invention without an electronic card and without a transparent cover,
  • The figure 2 is a section illustrating a box provided at the end of the lighting device of the figure 1 ,
  • The figure 3 is a front view of the case of the figure 2 showing by transparency the various elements, including a joint support represented in strong line,
  • The Figures 4A and 4B are sections of two seals each provided for the passage of an electric cable with a different section,
  • The figure 5 is a section of a part of the box of the figure 3 illustrating a cap with a transparent wall,
  • The figure 6 is a section of a seal surrounding the hood of the figure 5 ,
  • The figure 7 is a front view of a transparent cover designed to cover an electronic card comprising at least light-emitting diodes,
  • The figure 8 is a cut of the transparent hood of the figure 7 mounted on a support comprising an electrical cable passage,
  • The Figures 9A and 9B are cuts illustrating in detail the electrical cable passage of the figure 8 when it is set up and at the end of its implementation,
  • The figure 10 is a section of a support for an electronic card supporting light-emitting diodes,
  • The figure 11 is a perspective view of the support of the figure 10 with partial tearing to illustrate the different layers of the support,
  • The figure 12 is a diagram illustrating a control system of a lighting device,
  • The figure 13 is a front view illustrating another variant of the invention,
  • The figure 14A is a section of a part of a lighting device which illustrates a first variant of the invention,
  • The Figure 14B is a section along line II of the figure 14A ,
  • The figure 15A is a section of a part of a lighting device which illustrates a second variant of the invention,
  • The figure 15B is a section along line II-II of the figure 15A ,
  • The figure 15C is a section along line III-III of the figure 15A ,
  • The figure 16A is a section of a part of a lighting device which illustrates a third variant of the invention,
  • The figure 16B is a section along line IV-IV of the figure 16A ,
  • The figure 16C is a section along line VV of the figure 16A ,
  • The figure 17 is a perspective view of a portion of a lighting device that illustrates an embodiment of a fastening system of said device,
  • The figure 18 is a perspective view of a lighting device which illustrates an embodiment of the invention.

Sur les figures 1 et 8, on a représenté un dispositif d'éclairage 10 à diodes électroluminescentes.On the figures 1 and 8 there is shown a lighting device 10 with light-emitting diodes.

Ce dispositif d'éclairage 10 comprend :

  • au moins une carte électronique 12 sur laquelle sont implantées des diodes électroluminescentes 14 et de préférence d'autres composants électroniques,
  • un support de carte électronique 16 qui assure des fonctions mécanique et thermique qui comprend une surface plane 18 contre laquelle est plaquée la carte électronique 12,
  • un capot transparent 20 qui comprend un bord périphérique 22 plaqué contre le support de carte électronique 16 de manière à former une enceinte 24 « étanche ».
This lighting device 10 comprises:
  • at least one electronic card 12 on which are implanted light-emitting diodes 14 and preferably other electronic components,
  • an electronic card support 16 which provides mechanical and thermal functions which comprises a flat surface 18 against which the electronic card 12 is pressed,
  • a transparent cover 20 which comprises a peripheral edge 22 pressed against the electronic card support 16 so as to form a chamber 24 "sealed".

Le capot transparent 20 n'est pas plus détaillé car il est connu de l'homme du métier. Ses caractéristiques géométriques et dimensionnelles varient en fonction notamment des caractéristiques optiques recherchées, de la carte électronique et des composants présents sur cette carte.The transparent cover 20 is not more detailed because it is known to those skilled in the art. Its geometric and dimensional characteristics vary depending in particular on the optical characteristics sought, the electronic card and the components present on this card.

Selon une variante illustrée sur les figures 1 à 3, le support de carte électronique 16 comprend un profilé 26 avec une section constante selon une direction 28 (représentée par un trait d'axe). La section comprend une portion rectiligne qui correspond, sur la longueur du profilé 26, à la surface plane 18 et une pluralité de formes alternées en creux et en saillie réparties de préférence de manière symétrique par rapport à un axe médian 30 perpendiculaire à la portion rectiligne.According to an illustrated variant on the Figures 1 to 3 , the electronic card support 16 comprises a section 26 with a constant section in a direction 28 (represented by a center line). The section comprises a rectilinear portion which corresponds, along the length of the profile 26, to the flat surface 18 and a plurality of alternating hollow and projecting shapes preferably distributed symmetrically with respect to a median axis perpendicular to the rectilinear portion. .

Contrairement à l'art antérieur, il est possible de modifier la puissance lumineuse en ajustant notamment la longueur du profilé sans avoir besoin obligatoirement de changer sa section. Ainsi, à partir d'une même filière, il est possible de décliner plusieurs puissances d'éclairage.Unlike the prior art, it is possible to modify the light power by adjusting in particular the length of the profile without the need necessarily to change its section. Thus, from the same die, it is possible to decline several lighting powers.

La section du profilé 26 peut varier en fonction des échanges thermiques recherchés.The section of the section 26 may vary depending on the desired heat exchange.

Selon un autre point, le profilé 26 est creux et comprend à l'intérieur un conduit 32 qui débouche à chacune des extrémités 34 dudit profilé qui sont dans des plans approximativement perpendiculaires à la surface plane 18. Ce conduit 32 peut être utilisé pour stocker des moyens d'accumulation d'énergie électrique comme par exemple des batteries, des accumulateurs ou autres. Le conduit 32 étant débouchant aux deux extrémités, on obtient naturellement un flux d'air qui contribue à refroidir les moyens d'accumulation d'énergie électrique.According to another point, the profile 26 is hollow and comprises inside a conduit 32 which opens at each end 34 of said profile which are in planes approximately perpendicular to the flat surface 18. This conduit 32 can be used for storing electrical energy storage means such as batteries, accumulators or others. Since the duct 32 is opening at both ends, naturally a flow of air is obtained which contributes to cooling the means of accumulation of electrical energy.

Selon un mode de réalisation illustré en détails sur la figure 2, le support de carte électronique 16 comprend deux plaques 36, une pour chaque extrémité du profilé 26. Chaque plaque 36 est reliée au profilé 26 par des moyens de liaison 38 et au moins une cale 40 est prévue pour maintenir écartés la plaque 36 et le profilé 26. Selon un mode de réalisation, les moyens de liaison 38 comprennent plusieurs vis, pour chacune d'elles, la plaque 36 et la cale 40 comprenant chacune un trou de passage, et le profilé 26 un trou taraudé.According to an embodiment illustrated in detail on the figure 2 , the electronic card support 16 comprises two plates 36, one for each end of the profile 26. Each plate 36 is connected to the profile 26 by connecting means 38 and at least one shim 40 is provided to keep apart the plate 36 and the 26. According to one embodiment, the connecting means 38 comprise several screws, for each of them, the plate 36 and the shim 40 each comprising a through hole, and the profile 26 a tapped hole.

Selon une autre caractéristique, le dispositif d'éclairage comprend un boitier 42 contenant au moins un capteur 44 parmi un capteur de présence, un capteur de luminosité, ledit boitier 42 étant distant de la carte électronique 12 supportant les diodes électroluminescentes 14. Cette configuration permet de limiter les risques de perturbation du fonctionnement du capteur 44.According to another characteristic, the lighting device comprises a housing 42 containing at least one sensor 44 among a presence sensor, a brightness sensor, said housing 42 being remote from the electronic card 12 supporting the light-emitting diodes 14. This configuration allows to limit the risks of disturbing the operation of the sensor 44.

Avantageusement, le boitier 42 est supporté par l'une des plaques 36. Cette configuration permet d'optimiser le fonctionnement des capteurs, le boitier 42 comprenant une première face 46 orientée vers le sol qui est adaptée pour un capteur de présence et une deuxième face 48 orientée vers le haut qui est adaptée pour un capteur de luminosité.Advantageously, the housing 42 is supported by one of the plates 36. This configuration makes it possible to optimize the operation of the sensors, the housing 42 comprising a first face 46 facing towards the ground which is adapted for a presence sensor and a second face 48 upward which is suitable for a brightness sensor.

Bien entendu, l'invention n'est pas limitée à cet agencement. Les ouvertures pratiquées dans le boitier 42 pour les capteurs et les autres éléments peuvent être regroupées sur une même face ou disposées sur différentes faces. Le boitier 42 comprend au moins une ouverture sur au moins une face.Of course, the invention is not limited to this arrangement. The openings made in the housing 42 for the sensors and the other elements can be grouped on the same face or arranged on different faces. The housing 42 comprises at least one opening on at least one face.

Selon cette configuration, la plaque 36 assure la fonction de support de carte électronique et comprend une face contre laquelle est plaquée une seconde carte électronique 50 supportant le ou les capteurs 44 et d'autres composants électroniques. Le boitier 42 a une forme en creux et un bord périphérique 52 plaqué contre la plaque 36 de manière à délimiter avec cette dernière une enceinte 54 « étanche » dans laquelle est placée la seconde carte électronique 50.According to this configuration, the plate 36 provides the electronic card support function and comprises a face against which is pressed a second electronic card 50 supporting the sensor or sensors 44 and other electronic components. The housing 42 has a recessed shape and a peripheral edge 52 pressed against the plate 36 so as to delimit with the latter a chamber 54 "sealed" in which is placed the second electronic card 50.

Selon cette configuration, le dispositif d'éclairage comprend deux cartes électroniques 12 et 50. Ainsi, il est possible de dissocier les fonctions électroniques et de les répartir sur les deux plaques. Ainsi, les fonctions électroniques qui varient en fonction de la puissance d'éclairage sont implémentées sur la première carte électronique 12 supportant les diodes électroluminescentes 14 et les fonctions électroniques qui ne varient pas en fonction de la puissance d'éclairage sont implémentées sur la seconde carte électronique 50. Cette configuration permet de rationaliser les coûts de production dans la mesure où la seconde carte électronique 50 est identique et commune à tous les dispositifs d'éclairage.According to this configuration, the lighting device comprises two electronic cards 12 and 50. Thus, it is possible to separate the electronic functions and distribute them on both plates. Thus, the electronic functions that vary according to the lighting power are implemented on the first electronic card 12 supporting the light-emitting diodes 14 and the electronic functions that do not vary according to the lighting power are implemented on the second card This configuration makes it possible to rationalize the production costs insofar as the second electronic card 50 is identical and common to all the lighting devices.

En variante, toutes les fonctions électroniques peuvent être regroupées sur une même carte électronique.As a variant, all the electronic functions can be grouped together on the same electronic card.

Quelle que soit la variante, le dispositif d'éclairage comprend une enceinte « étanche » 24, 54 délimitée par un support 16 ou 36 et un capot (le capot transparent 20 ou le boitier 42) qui comprend un bord périphérique plaqué contre le support et relié à ce dernier par une liaison 56 étanche à l'air et à l'eau, ladite enceinte contenant une carte électronique 12 ou 50.Whatever the variant, the lighting device comprises a "sealed" enclosure 24, 54 delimited by a support 16 or 36 and a cover (the transparent cover 20 or the housing 42) which comprises a peripheral edge pressed against the support and connected to the latter by a connection 56 sealed to air and water, said enclosure containing an electronic card 12 or 50.

Pour obtenir une liaison étanche 56, un joint périphérique 58 est intercalé entre le support 16 ou 36 et le capot 20 ou 42. A cet effet, le bord périphérique du capot comprend une gorge avec une section transversale en U ouverte en direction du support, qui s'étend sur toute la périphérie et qui loge le joint périphérique.To obtain a sealed connection 56, a peripheral seal 58 is interposed between the support 16 or 36 and the cover 20 or 42. For this purpose, the peripheral edge of the cover comprises a groove with a U-shaped cross section towards the support, which extends over the entire periphery and houses the peripheral seal.

Selon une caractéristique, l'enceinte « étanche » 24, 54 comprend au moins une ouverture 60 permettant de faire communiquer l'intérieur et l'extérieur de ladite enceinte « étanche » 24, 54, ladite ouverture 60 étant obturée par une paroi 62 étanche à l'eau et perméable à l'air.According to one characteristic, the "sealed" enclosure 24, 54 comprises at least one opening 60 making it possible to communicate the inside and the outside of said "sealed" enclosure 24, 54, said opening 60 being closed off by a tight wall 62 with water and permeable to air.

Selon un mode de réalisation, la paroi 62 est un tissu à très faible maille, comme par exemple un tissu commercialisé par la société « Gore ».According to one embodiment, the wall 62 is a very low-mesh fabric, such as for example a fabric sold by the company "Gore".

La paroi 62 étanche à l'eau et perméable à l'air permet d'évacuer le surplus d'air et d'éviter une surpression lorsque la température s'élève et que l'air présent à l'intérieur de l'enceinte « étanche » 24, 54 se dilate.The water-tight and breathable wall 62 makes it possible to evacuate the surplus air and to avoid an overpressure when the temperature rises and the air present inside the enclosure " Waterproof 24, 54 expands.

Quelle que soit la variante, le dispositif d'éclairage comprend au moins un passage de câble électrique 64 pour acheminer un câble électrique 66 entre l'intérieur et l'extérieur de l'enceinte « étanche » 24, 54.Whatever the variant, the lighting device comprises at least one electrical cable passage 64 for conveying an electrical cable 66 between the inside and the outside of the "sealed" enclosure 24, 54.

De manière connue, un câble électrique 66 a une section circulaire.In known manner, an electric cable 66 has a circular section.

Un passage de câble électrique 64 comprend un joint 68 (visible en détails sur les figures 4A et 4B) en matériau déformable qui comprend un conduit traversant 70 reliant une première extrémité 72 et une seconde extrémité 74 du joint 68 ainsi qu'une surface latérale 76 approximativement conique et concentrique au conduit traversant 70 et un support de joint 78 (visible en détails sur les figures 9A et 9B) traversé par un conduit 80 conique configuré pour recevoir le joint 68.An electrical cable passage 64 includes a seal 68 (visible in detail on the Figures 4A and 4B ) of deformable material which comprises a through conduit 70 connecting a first end 72 and a second end 74 of the seal 68 and a side surface 76 approximately conical and concentric to the through conduit 70 and a seal support 78 (visible in detail on the Figures 9A and 9B ) traversed by a conical conduit 80 configured to receive the seal 68.

Avantageusement, le conduit traversant 70 du joint 68 a une partie convergente puis une partie divergente d'une extrémité à l'autre, avec une section réduite 82 (jonction entre les parties convergente et divergente).Advantageously, the through conduit 70 of the seal 68 has a convergent portion and a divergent portion from one end to the other, with a reduced section 82 (junction between the convergent and divergent portions).

Selon une configuration, comme illustré sur la figure 4A, la section réduite 82 a un diamètre égal au diamètre extérieur au câble électrique 66 pour permettre au joint 68 de coulisser sur le câble électrique 66.According to one configuration, as illustrated on the Figure 4A , the reduced section 82 has a diameter equal to the outside diameter of the electrical cable 66 to allow the seal 68 to slide on the electrical cable 66.

Le support de joint 78 comprend une face d'appui 84 parallèle à la carte électronique 12, 50 et orientée vers cette dernière ou vers l'enceinte (24, 54). Le conduit 80 s'étend depuis une face extérieure 86 jusqu'à la face d'appui 84 et a une forme conique avec un axe perpendiculaire à la face d'appui 84, le conduit 80 ayant une section plus importante au niveau de la face d'appui 84 qu'au niveau de la face extérieure 86.The seal support 78 comprises a bearing face 84 parallel to the electronic card 12, 50 and oriented towards the latter or towards the enclosure (24, 54). The duct 80 extends from an outer face 86 to the bearing face 84 and has a conical shape with an axis perpendicular to the bearing face 84, the duct 80 having a larger section at the face support 84 only at the outer face 86.

Avantageusement, le support de joint 78 est plaqué contre la carte électronique 12, 50 ou une plaque 36 intercalaire. Dans cette configuration, pour permette le passage du câble électrique 66, la carte électronique 12, 50 et l'éventuelle plaque 36 intercalaire comprennent respectivement un trou de passage 88, 90 avec une section égale ou très légèrement supérieure à celle du câble électrique 66.Advantageously, the seal support 78 is pressed against the electronic card 12, 50 or an interposed plate 36. In this configuration, in order to allow the passage of the electric cable 66, the electronic card 12, 50 and the optional interposed plate 36 respectively comprise a through hole 88, 90 with a section equal to or slightly greater than that of the electric cable 66.

En complément du joint 68 et du support de joint 78, le passage de câble électrique 64 comprend des moyens de compression permettant de comprimer le joint 68 entre le support de joint 78 et la carte électronique 12, 50.In addition to the gasket 68 and the gasket support 78, the electrical cable passage 64 comprises compression means for compressing the gasket 68 between the gasket support 78 and the electronic card 12, 50.

Selon un mode de réalisation, ces moyens de compression comprennent au moins un boulon 92 qui traverse le support de joint 78, une éventuelle plaque 36 intercalaire et la carte électronique 12 ou 50. Bien entendu, l'invention n'est pas limitée à cette variante pour les moyens de compression qui peuvent prendre la forme d'une ou plusieurs vis, d'un ou plusieurs rivets ou d'un ou plusieurs autres moyens de liaison.According to one embodiment, these compression means comprise at least one bolt 92 which passes through the joint support 78, a possible interposed plate 36 and the electronic card 12 or 50. Of course, the invention is not limited to this variant for the compression means which may take the form of one or more screws, one or more rivets or one or more other connecting means.

Le conduit 80 et le joint 68 sont dimensionnés de manière à ce qu'en l'absence de compression comme illustré sur la figure 9A, lorsque la surface latérale 76 du joint 68 est en contact avec le support de joint 78, le joint 68 est en saillie par rapport à la face d'appui 84 du support de joint 78. Ainsi, après serrage comme illustré sur la figure 9B, la carte électronique 12 ou la plaque 36 intercalaire est plaquée contre la face d'appui 84 et exerce un effort de compression longitudinal (perpendiculaire à la face d'appui 84) sur le joint 68 qui est positionné dans le conduit 80. Compte tenu de la forme conique du conduit 80, le joint 68 exerce un effort de compression centripète (perpendiculaire à la direction longitudinale) sur le câble électrique 66 qui renforce l'étanchéité.The duct 80 and the gasket 68 are dimensioned so that in the absence of compression as illustrated in FIG. Figure 9A when the side surface 76 of the gasket 68 is in contact with the gasket support 78, the gasket 68 is protruding from the support face 84 of the gasket support 78. Thus, after tightening as illustrated in FIG. Figure 9B , the map 12 or the interposed plate 36 is pressed against the bearing face 84 and exerts a longitudinal compressive force (perpendicular to the bearing face 84) on the seal 68 which is positioned in the conduit 80. Given the shape conical conduit 80, the seal 68 exerts a centripetal compression force (perpendicular to the longitudinal direction) on the electric cable 66 which strengthens the seal.

Comme illustré sur la figure 4A et 4B, il n'est pas nécessaire de modifier la globalité du passage de câble pour l'adapter à différentes sections de câbles électriques.As illustrated on the Figure 4A and 4B , it is not necessary to modify the entire cable passage to adapt to different sections of electric cables.

Ainsi, quel que soit le diamètre du câble électrique 66, le support de joint 78 reste inchangé. Seul le joint 68 est adapté au câble électrique. Ainsi, il est possible d'avoir plusieurs formats pour les joints 68, la section du conduit traversant 70 étant différente d'un format à l'autre, les joints 68 ayant des surfaces latérales toutes identiques.Thus, whatever the diameter of the electric cable 66, the joint support 78 remains unchanged. Only the gasket 68 is adapted to the electric cable. Thus, it is possible to have several sizes for the seals 68, the section of the through duct 70 being different from one format to another, the seals 68 having all the identical side surfaces.

Selon une première variante illustrée sur les figures 8, 9A et 9B, lorsque le support 16 a une épaisseur suffisante pour loger le conduit 80, le support de joint 78 et le support 16 sont une unique et même pièce. Cette solution permet de réduire le nombre de pièces et donc les coûts.According to a first variant illustrated on the Figures 8, 9A and 9B when the support 16 has a thickness sufficient to house the conduit 80, the seal support 78 and the support 16 are a single piece. This solution reduces the number of parts and therefore the costs.

Selon une deuxième variante illustrée sur la figure 2, lorsque le support a une épaisseur peu importante comme dans le cas d'une plaque 36, le support de joint 78 et la plaque 36 sont deux pièces distinctes, la plaque 36 étant intercalée entre le support de joint 78 et la carte électronique 50. Pour réduire le nombre de pièces, selon cette deuxième variante, le support de joint 78 assure également la fonction de cale 40. Dans ce cas, comme illustré sur la figure 3, le support de joint 78 a une forme cylindrique et comprend au moins une branche 94, en l'occurrence trois branches 94 qui comprennent chacune au niveau de leurs extrémités une bague 96 qui forme une entretoise et qui est traversée par les moyens de liaison 38.According to a second variant illustrated on the figure 2 when the support has a small thickness as in the case of a plate 36, the seal support 78 and the plate 36 are two separate parts, the plate 36 being interposed between the seal support 78 and the electronic card 50. To reduce the number of parts, according to this second variant, the seal support 78 also performs the function of hold 40. In this case, as illustrated in FIG. figure 3 , the seal support 78 has a cylindrical shape and comprises at least one branch 94, in this case three branches 94 which each comprise at their ends a ring 96 which forms a spacer and which is traversed by the connecting means 38 .

Avantageusement, le joint 68 a une dureté Shore A de l'ordre de 50 pour obtenir une bonne compression radiale du câble électrique 66. Selon un mode de réalisation, le joint 68 est en élastomère thermoplastique, comme par exemple en SEBS.Advantageously, the seal 68 has a Shore A hardness of the order of 50 to obtain a good radial compression of the electric cable 66. According to one embodiment, the seal 68 is made of thermoplastic elastomer, such as SEBS.

Selon d'autres configurations, la carte électronique 12 ou 50 peut être décalée par rapport au passage de câble 64 et ne comprend pas de trous de passage 88, 90. Dans ce cas, le dispositif d'éclairage comprend une plaque de compression distincte de la carte électronique pour comprimer le joint 68. Quelle que soit la variante, le dispositif d'éclairage comprend au moins une plaque de compression qui peut être la carte électronique 12 ou 50, la plaque 36 ou une autre plaque, ladite plaque de compression comprenant un trou de passage 88 avec une section égale ou très légèrement supérieure à celle du câble électrique 66.According to other configurations, the electronic card 12 or 50 can be shifted with respect to the cable passage 64 and does not include passage holes 88, 90. In this case, the lighting device comprises a compression plate distinct from the electronic board for compressing the gasket 68. Whatever the variant, the lighting device comprises at least one compression plate which may be the electronic card 12 or 50, the plate 36 or another plate, said compression plate comprising a through hole 88 with a section equal to or slightly greater than that of the electric cable 66.

De plus, le ou les câbles électriques peuvent être insérés dans un tube, le joint 68 étant comprimé contre la paroi extérieure du tube dans lequel passent le ou les câbles électriques. Par conséquent, l'invention n'est pas limitée au passage d'au moins un câble électrique. Ainsi, l'invention permet le passage d'au moins un élément comprenant au moins un câble électrique, cet élément étant soit le câble électrique, soit un tube contenant au moins un câble électrique.In addition, the one or more electrical cables can be inserted into a tube, the gasket 68 being compressed against the outer wall of the tube in which the electric cable or cables pass. Therefore, the invention is not limited to the passage of at least one electrical cable. Thus, the invention allows the passage of at least one element comprising at least one electrical cable, this element being either the electric cable or a tube containing at least one electric cable.

Selon les cas, le joint 68 comprend un seul conduit traversant 70 ou plusieurs conduits 70 destinés chacun au passage d'un élément comprenant au moins un câble électrique.Depending on the case, the seal 68 comprises a single through conduit 70 or more conduits 70 each intended for the passage of an element comprising at least one electrical cable.

Le passage de câble conforme à l'invention permet son montage depuis une seule face à savoir la face sur laquelle sont rapportées les diodes électroluminescentes. Ainsi, il est possible d'obtenir un passage de câble parfaitement étanche même si celui-ci est difficilement accessible comme par exemple s'il est éloigné des extrémités d'un profilé 26 ou si le support 16 est déjà fixé et que sa face arrière (opposée à celle recevant le capot 20) n'est plus accessible.The cable passage according to the invention allows its mounting from a single face, namely the face on which the light emitting diodes are reported. Thus, it is possible to obtain a perfectly tight cable passage even if it is difficult to access such as for example if it is remote from the ends of a profile 26 or if the support 16 is already fixed and its rear face (opposite to that receiving the cover 20) is no longer accessible.

Selon une autre caractéristique, le boitier 42 a une paroi opaque et comprend une ouverture 98 destinée au capteur de présence, visible en détails sur la figure 5. Cette ouverture 98 est obturée par un capuchon 100. Selon un mode de réalisation, le capuchon 100 comprend un conduit cylindrique 102 surmonté d'une tête 104.According to another characteristic, the housing 42 has an opaque wall and comprises an opening 98 intended for the presence sensor, visible in detail on the figure 5 . This opening 98 is closed by a cap 100. According to one embodiment, the cap 100 comprises a cylindrical duct 102 surmounted by a head 104.

Le conduit cylindrique 102 a un diamètre qui augmente légèrement depuis son extrémité reliée à la tête 104 jusqu'à son autre extrémité destinée à venir à l'intérieur du boitier 42.The cylindrical duct 102 has a diameter that increases slightly from its end connected to the head 104 to its other end intended to come inside the housing 42.

La tête 104 comprend une partie inférieure cylindrique 106 surmontée d'un dôme 108 en un matériau transparent pour la lumière. La partie inférieure cylindrique 106 de la tête a un diamètre supérieur à celui du conduit cylindrique 102. Ainsi, le conduit cylindrique 102 est relié à la partie inférieure cylindrique 106 de la tête par une paroi radiale 110 qui s'étend dans un plan perpendiculaire aux axes du conduit cylindrique 102 et de la partie inférieure cylindrique 106 de la tête.The head 104 comprises a cylindrical lower portion 106 surmounted by a dome 108 of a transparent material for the light. The cylindrical lower portion 106 of the head has a diameter greater than that of the cylindrical duct 102. Thus, the cylindrical duct 102 is connected to the cylindrical lower part 106 of the head by a radial wall 110 which extends in a plane perpendicular to the axes of the cylindrical duct 102 and the cylindrical lower portion 106 of the head.

Pour améliorer l'étanchéité, le dispositif d'éclairage comprend un joint 112 intercalé entre le capuchon 100 et le bord 114 de la paroi du boitier 42 délimitant l'ouverture 98.To improve the seal, the lighting device comprises a seal 112 interposed between the cap 100 and the edge 114 of the wall of the housing 42 defining the opening 98.

Ce joint 112 est illustré en détails sur la figure 6. Il comprend une base cylindrique 116 surmontée d'une tête cylindrique 118 qui a un diamètre extérieur supérieur à celui de la base cylindrique qui a, elle, un diamètre approximativement égal à celui de l'ouverture 98. La base cylindrique 116 comprend à l'extérieur et au niveau de son extrémité inférieure une collerette 119 dont le diamètre extérieur est supérieur à celui de l'ouverture 98. Cette collerette 119 est séparée de la tête 118 d'une distance approximativement égale à l'épaisseur du bord 114 de la paroi du boitier. De préférence, la collerette 119 a une forme conique pour favoriser son passage à travers l'ouverture 98. Lorsque le joint 112 est emmanché dans l'ouverture 98, seule la tête 118 reste à l'extérieur du boitier.This seal 112 is illustrated in detail on the figure 6 . It comprises a cylindrical base 116 surmounted by a cylindrical head 118 which has an outside diameter greater than that of the cylindrical base which has a diameter approximately equal to that of the opening 98. The cylindrical base 116 comprises outside and at its lower end a flange 119 whose outer diameter is greater than that of the opening 98. This flange 119 is separated from the head 118 by a distance approximately equal to the thickness of the edge 114 of the wall of the housing. Preferably, the flange 119 has a conical shape to promote its passage through the opening 98. When the seal 112 is fitted into the opening 98, only the head 118 remains outside the housing.

La base et la tête sont traversées par un conduit 120 configuré pour loger le capuchon 100. Ce conduit 120 comprend en partie supérieure un lamage 122 dont le diamètre intérieur est égal à celui de la tête 104 du capuchon 100.The base and the head are traversed by a conduit 120 configured to house the cap 100. This conduit 120 comprises in the upper part a countersink 122 whose inner diameter is equal to that of the head 104 of the cap 100.

Le conduit 120 comprend sous le lamage 122 une portion médiane 124 avec un diamètre qui se réduit jusqu'à une portion terminale 126 qui a un diamètre constant.The conduit 120 comprises under the countersink 122 a median portion 124 with a diameter which is reduced to an end portion 126 which has a constant diameter.

La hauteur des portions médiane et terminale 124 et 126 est inférieure à la hauteur du conduit cylindrique 102 du capuchon 100 de sorte que ce dernier vient en saillie du joint 112 lorsque la paroi radiale 110 du capuchon 100 vient contre le fond 128 du lamage 122. En complément, le conduit cylindrique 102 du capuchon 100 a, au niveau de son extrémité inférieure, un diamètre extérieur supérieur à celui de la portion terminale 126 de manière à ce que le capuchon 100 soit maintenu dans le joint 112.The height of the middle and end portions 124 and 126 is smaller than the height of the cylindrical duct 102 of the cap 100 so that the latter protrudes from the gasket 112 when the radial wall 110 of the cap 100 comes against the bottom 128 of the counterbore 122. In addition, the cylindrical duct 102 of the cap 100 has, at its lower end, an outside diameter greater than that of the end portion 126 so that the cap 100 is held in the seal 112.

Selon une caractéristique, la paroi 129 de la tête du joint 112 entourant le lamage 122 a une épaisseur fine de l'ordre de 1 à 3 mm.According to one feature, the wall 129 of the seal head 112 surrounding the counterbore 122 has a thin thickness of the order of 1 to 3 mm.

Le joint 112 est réalisé en matériau déformable. Il a une dureté Shore A de l'ordre de 40. Selon un mode de réalisation, le joint 112 est en élastomère thermoplastique, comme par exemple en SEBS.The seal 112 is made of deformable material. It has a Shore A hardness of the order of 40. According to one embodiment, the seal 112 is made of thermoplastic elastomer, such as for example in SEBS.

Avantageusement, le fond 128 du lamage 122 comprend une nervure circulaire 130 en saillie qui entoure le conduit 120. Cette nervure 130 a une hauteur de l'ordre de 0,5 à 1mm et une épaisseur de l'ordre de 0, 5 à 1mm. Elle est espacée du conduit 120 d'une distance inférieure à 1 mm.Advantageously, the bottom 128 of the countersink 122 comprises a circular rib 130 projecting which surrounds the duct 120. This rib 130 has a height of the order of 0.5 to 1 mm and a thickness of the order of 0.5 to 1 mm. . It is spaced from the conduit 120 by a distance of less than 1 mm.

Cette nervure circulaire 130 favorise le maintien du capuchon 100 dans le joint 112 et améliore l'étanchéité entre ces deux éléments. Ainsi, lorsque le capuchon 100 est emmanché dans le joint 112, la paroi radiale 110 du capuchon écrase la nervure circulaire 130. L'écrasement de cette nervure circulaire 130 provoque la déformation de la paroi 129 de la tête du joint 112 dont l'extrémité supérieure se déforme vers l'intérieur du joint comme illustré par les flèches 132. Ainsi, le joint 112 exerce un effort de compression sur la tête du capuchon 100 qui améliore l'étanchéité.This circular rib 130 promotes the maintenance of the cap 100 in the seal 112 and improves the seal between these two elements. Thus, when the cap 100 is fitted into the seal 112, the radial wall 110 of the cap crushes the circular rib 130. The crushing of this circular rib 130 causes the deformation of the wall 129 of the seal head 112 whose end upper deforms towards the inside of the joint as illustrated by the arrows 132. Thus, the seal 112 exerts a compressive force on the head of the cap 100 which improves the seal.

Le joint 122 peut également être utilisé pour améliorer l'étanchéité entre un capuchon et le bord d'une ouverture ménagée dans le capot transparent 20.The seal 122 may also be used to improve the seal between a cap and the edge of an opening in the transparent cover 20.

Selon l'invention, comme illustré sur les figures 10 à 13, le support 16 est un panneau 134 qui comprend une structure alvéolaire 136 intercalée entre deux plaques 138, 138' planes. La structure sandwich du panneau 134 lui confère des propriétés mécaniques élevées.According to the invention, as illustrated on the Figures 10 to 13 , the support 16 is a panel 134 which comprises a cellular structure 136 interposed between two flat plates 138, 138 '. The sandwich structure of the panel 134 gives it high mechanical properties.

Ce panneau 134 est métallique, par exemple en alliage d'aluminium.This panel 134 is metallic, for example aluminum alloy.

La structure alvéolaire 136 comprend une pluralité de conduits ayant des axes parallèles et perpendiculaires aux plaques 138, 138'. Chaque conduit est délimité par au moins une paroi 140 perpendiculaire aux plaques 138, 138'.The honeycomb structure 136 comprises a plurality of ducts having axes parallel and perpendicular to the plates 138, 138 '. Each duct is delimited by at least one wall 140 perpendicular to the plates 138, 138 '.

Selon l'exemple illustré sur la figure 11, la structure alvéolaire 136 est une structure en nid d'abeilles. Cependant, l'invention n'est pas limitée à cette forme hexagonale. Ainsi, les conduits de la structure alvéolaire peuvent avoir des sections circulaires, carrées ou autres. Contrairement à un support de l'art antérieur, le panneau 134 offre deux faces parallèles planes ce qui améliore son intégration.According to the example shown on the figure 11 the honeycomb structure 136 is a honeycomb structure. However, the invention is not limited to this hexagonal form. Thus, the ducts of the honeycomb structure may have circular, square or other sections. Unlike a support of the prior art, the panel 134 has two flat parallel faces which improves its integration.

Une première face 138E sur laquelle est rapportée une carte électronique 148 recouverte de son capot comme illustré sur la figure 11 ou plusieurs cartes électroniques recouvertes chacune par un capot comme illustré sur la figure 13.A first face 138E on which is reported an electronic card 148 covered with its hood as illustrated on the figure 11 or several electronic cards each covered by a hood as shown on the figure 13 .

Selon un point important, la carte électronique 148 est plaquée contre une première face 138E d'une des deux plaques 138 en contact avec la structure alvéolaire 136 qui contribue au transfert thermique. De la sorte, la plaque 138 est intercalée entre la structure alvéolaire 136 et chaque carte électronique 148. Ainsi, comme illustré sur la figure 10, la plaque 138 étant totalement plane, le contact surfacique entre la carte électronique 148 et la plaque 138 assure un transfert thermique optimal entre la carte électronique 148 et le panneau 134. Les parois 140 de la structure alvéolaire 136 assurent le transfert thermique entre les deux plaques 138, 138'. Enfin les calories thermiques sont évacuées via la plaque 138'.According to an important point, the electronic card 148 is pressed against a first face 138E of one of the two plates 138 in contact with the cellular structure 136 which contributes to the heat transfer. In this way, the plate 138 is interposed between the honeycomb structure 136 and each electronic card 148. Thus, as illustrated in FIG. figure 10 , the plate 138 being completely flat, the surface contact between the electronic card 148 and the plate 138 ensures optimal heat transfer between the electronic card 148 and the panel 134. The walls 140 of the cellular structure 136 ensure the heat transfer between the two plates 138, 138 '. Finally, the heat calories are evacuated via the plate 138 '.

Selon une configuration, les parois 140 ont une épaisseur de l'ordre de 0,2 à 2 mm.In one configuration, the walls 140 have a thickness of the order of 0.2 to 2 mm.

Les plaques 138, 138' ont une épaisseur de l'ordre de 0,5 à 3 mm.The plates 138, 138 'have a thickness of the order of 0.5 to 3 mm.

Le panneau 134 a une épaisseur de 10 à 50 mm en fonction de sa superficie.The panel 134 has a thickness of 10 to 50 mm depending on its area.

Enfin, les conduits de la structure alvéolaire 136 ont chacun une aire de l'ordre de 1 cm2.Finally, the ducts of the honeycomb structure 136 each have an area of the order of 1 cm 2 .

Généralement les supports de l'art antérieur sont conçus de manière à avoir une inertie thermique importante pour évacuer la chaleur générée par les diodes électroluminescentes. A contre pieds, le support de l'invention a une faible inertie thermique ce qui lui confère une grande réactivité pour évacuer les calories.Generally the supports of the prior art are designed to have a significant thermal inertia to evacuate the heat generated by the light emitting diodes. With against feet, the support of the invention has a low thermal inertia which gives it a great reactivity to evacuate the calories.

Selon un autre aspect, le panneau 134 est produit de manière industrielle en grande quantité car il est destiné à d'autres applications. Par conséquent, son coût de revient est inférieur à un support de l'art antérieur.In another aspect, the panel 134 is industrially produced in large quantities because it is intended for other applications. Therefore, its cost is lower than a support of the prior art.

De plus, la structure alvéolaire est parfaitement reliée aux plaques 138, 138' si bien que les alvéoles sont étanches.In addition, the honeycomb structure is perfectly connected to the plates 138, 138 'so that the cells are sealed.

Il peut être découpé et usiné aisément. Ainsi, il est possible de le percer comme illustré sur la figure 10 de manière à insérer un câble électrique. De plus, il est possible d'ajuster les dimensions du panneau en fonction du nombre de cartes électroniques positionnées sur le panneau.It can be cut and machined easily. Thus, it is possible to pierce it as illustrated on the figure 10 in order to insert an electric cable. In addition, it is possible to adjust the dimensions of the panel according to the number of electronic cards positioned on the panel.

Selon un point important, le panneau ayant une faible inertie thermique, le dispositif d'éclairage comprend un système de régulation de la chaleur émise par les diodes électroluminescentes.According to an important point, since the panel has a low thermal inertia, the lighting device comprises a system for regulating the heat emitted by the light-emitting diodes.

A cet effet, le dispositif d'éclairage comprend une commande 142 assurant la régulation du courant d'alimentation des diodes électroluminescentes 144 ainsi qu'un capteur de température 146 implanté à proximité des diodes électroluminescentes 144 qui est relié à la commande 142. Ainsi, la commande 142 régule le courant d'alimentation des diodes électroluminescentes 144 de manière à ce que la température mesurée par le capteur de température 146 reste en dessous d'une température seuil. A titre indicatif, cette température seuil est inférieure à la température maximale de fonctionnement des diodes électroluminescentes. A titre d'exemple seulement, la température seuil est de l'ordre de 65°.For this purpose, the lighting device comprises a control 142 ensuring the regulation of the supply current of the light-emitting diodes 144 and a temperature sensor 146 implanted in the vicinity of the light-emitting diodes 144 which is connected to the control 142. Thus, the control 142 regulates the supply current of the light-emitting diodes 144 so that the temperature measured by the temperature sensor 146 remains below a threshold temperature. As an indication, this threshold temperature is lower than the maximum operating temperature of the light emitting diodes. By way of example only, the threshold temperature is of the order of 65 °.

Selon un mode de réalisation, le capteur de température 146 est fixé sur la carte électronique 148 supportant les diodes électroluminescentes 144.According to one embodiment, the temperature sensor 146 is fixed on the electronic card 148 supporting the light-emitting diodes 144.

Sur les figures 14A, 14B, 15A, 15B, 15C, 16A, 16B, 16C, 17 et 18, on a illustré des variantes de cheminement d'un câble d'alimentation dans le support 16.On the FIGS. 14A, 14B, 15A, 15B, 15C , 16A, 16B, 16C, 17 and 18 variants of routing of a power cable in the support 16 have been illustrated.

Le support 16 du dispositif d'éclairage comprend un panneau 134 avec une structure alvéolaire 136 intercalée entre deux plaques 138, 138' planes, chaque plaque 138, 138' comprenant une face extérieure 138E, 138'E et une face intérieure 1381, 138'I orientée vers la structure alvéolaire 136.The support 16 of the lighting device comprises a panel 134 with a honeycomb structure 136 interposed between two flat plates 138, 138 ', each plate 138, 138' comprising an outer face 138E, 138'E and an inner face 1381, 138'I oriented towards the honeycomb structure 136.

Le dispositif d'éclairage comprend une carte électronique 148 plaquée contre la face extérieure 138E et recouverte par un capot 150 qui comprend un bord périphérique relié de manière étanche avec la face extérieure 138E. A cet effet, un joint 152 est intercalé entre le bord périphérique et la face extérieure 138E.The lighting device comprises an electronic card 148 pressed against the outer face 138E and covered by a cover 150 which comprises a peripheral edge sealingly connected to the outer face 138E. For this purpose, a seal 152 is interposed between the peripheral edge and the outer face 138E.

Pour assurer l'étanchéité, le panneau 134 comprend au niveau de son chant périphérique un joint périphérique 154 qui s'étend sur toute la longueur du chant périphérique et entre les deux plaques 138, 138'. Selon un mode de réalisation, le joint périphérique 154 est réalisé en résine et obtenu par exemple par surmoulage.To seal, the panel 134 comprises at its peripheral edge a peripheral seal 154 which extends over the entire length of the peripheral edge and between the two plates 138, 138 '. According to one embodiment, the peripheral seal 154 is made of resin and obtained for example by overmolding.

Le dispositif d'éclairage comprend un câble d'alimentation 156 relié à la carte électronique. A cet effet, la carte électronique comprend un trou de passage 158.The lighting device comprises a power cable 156 connected to the electronic card. For this purpose, the electronic card comprises a through hole 158.

Selon un mode de réalisation, le câble d'alimentation 156 traverse le joint périphérique 154 pour être disposé entre les deux plaques 138, 138'.According to one embodiment, the power cable 156 passes through the peripheral seal 154 to be disposed between the two plates 138, 138 '.

Selon un autre mode de réalisation visible sur la figure 18, le câble d'alimentation 156 traverse un capot 187 pour être disposé entre les deux plaques 138, 138'.According to another embodiment visible on the figure 18 , the power cable 156 passes through a cover 187 to be disposed between the two plates 138, 138 '.

Pour assurer une étanchéité optimale, le dispositif d'éclairage comprend un presse étoupe 160 entourant le câble d'alimentation 156, positionné au niveau du joint périphérique 154 ou du capot 187 et configuré pour permettre audit câble d'alimentation 156 de traverser le joint périphérique 154 ou le capot 187 de manière étanche.To provide optimum sealing, the illumination device comprises a gland 160 surrounding the power cable 156, positioned at the peripheral seal 154 or the cover 187 and configured to allow said power cable 156 to traverse the peripheral seal. 154 or the hood 187 in a sealed manner.

Selon un mode réalisation, le presse étoupe 160 comprend une première partie avec des éléments de serrage et une seconde partie qui se visse à l'extérieur de la première partie de manière à resserrer les éléments de serrage autour du câble d'alimentation 156, la première partie du presse étoupe étant noyée dans le joint périphérique 154 ou solidaire du capot 187.In one embodiment, the cable gland 160 includes a first portion with clamping members and a second portion that is screwed to the outside of the first portion so as to tighten the clamping members around the power cable 156, the first portion of the gland being embedded in the peripheral seal 154 or integral with the cover 187.

Selon une première variante illustrée sur les figures 14A et 14B, le panneau 134 comprend une saignée 162 qui s'étend depuis le chant périphérique du panneau jusqu'à approximativement l'aplomb du trou de passage 158 de la carte électronique 148. Cette saignée 162 a une profondeur inférieure à l'épaisseur du panneau 134 et s'étend depuis la face extérieure 138E de la première plaque 138 et au moins sur une partie de la hauteur de la structure alvéolaire 136. Selon un mode de réalisation, la saignée 162 s'étend de la face extérieure 138E de la première plaque 138 jusqu'à la face intérieure 138'I de la deuxième plaque 138'.According to a first variant illustrated on the Figures 14A and 14B , the panel 134 comprises a groove 162 which extends from the peripheral edge of the panel to approximately plumb with the through hole 158 of the electronic card 148. This groove 162 has a depth less than the thickness of the panel 134 and extends from the outer face 138E of the first plate 138 and at least a portion of the height of the honeycomb structure 136. According to one embodiment, the groove 162 extends from the face outer 138E of the first plate 138 to the inner face 138 'I of the second plate 138'.

Comme illustré sur la figure 14B, la saignée 162 a une largeur et une profondeur adaptées pour permettre le positionnement du câble d'alimentation 156 dans la structure alvéolaire 136.As illustrated on the Figure 14B , the groove 162 has a width and a depth adapted to allow the positioning of the supply cable 156 in the cellular structure 136.

Pour assurer l'étanchéité, la saignée 162 est remplie d'un matériau de remplissage 164 assurant l'étanchéité au fluide. Avantageusement, le matériau de remplissage 164 est une résine, notamment la même que celle utilisée pour le joint périphérique 154. Au moins dans la zone de recouvrement de la saignée par le bord périphérique du capot 150, la surface extérieure 166 du matériau de remplissage 164 est surfacée de manière à obtenir une surface plane sensiblement dans le même plan que la face extérieure 138E de la plaque 138, pour obtenir une étanchéité optimale avec le joint 152.To seal, the groove 162 is filled with a filling material 164 ensuring fluid tightness. Advantageously, the filling material 164 is a resin, in particular the same as that used for the peripheral seal 154. At least in the zone of overlap of the groove by the peripheral edge of the cap 150, the outer surface 166 of the filling material 164 is surfaced so as to obtain a flat surface substantially in the same plane as the outer face 138E of the plate 138, to obtain an optimum seal with the seal 152.

Selon une deuxième variante illustrée sur les figures 15A, 15B et 15C, le panneau 134 comprend une saignée 168 qui s'étend depuis le chant périphérique du panneau 134 jusqu'à une terminaison 170 décalée vers l'extérieur par rapport au bord périphérique du capot 150. Selon cette configuration, la saignée 168 n'est pas sécante avec le joint 152 du capot 150, ce qui tend à améliorer l'étanchéité.According to a second variant illustrated on the Figures 15A, 15B and 15C , the panel 134 comprises a groove 168 which extends from the peripheral edge of the panel 134 to a termination 170 offset outwardly relative to the peripheral edge of the cover 150. According to this configuration, the bleeding 168 is not secante with the seal 152 of the cover 150, which tends to improve the seal.

Pour assurer le cheminement du câble d'alimentation 156 jusqu'au trou de passage 158 de la carte électronique 148, le panneau 134 comprend au moins un conduit 172 qui s'étend de la terminaison 170 de la saignée 168 jusqu'à la face extérieure 138E de la plaque 138, au droit de la position du trou de passage 158 de la carte électronique. Selon un mode de réalisation, le conduit 172 comprend un premier tronçon perforé 174 dans la structure alvéolaire 136 et approximativement parallèle aux plaques 138, 138' et un second tronçon perforé 176 qui s'étend à partir de la face extérieure 138E de la plaque 138 jusqu'au premier tronçon perforé 174. Ces tronçons perforés 174 et 176 ont un diamètre suffisant pour permettre le cheminement du câble d'alimentation 156.To ensure the routing of the power cable 156 to the through hole 158 of the electronic card 148, the panel 134 comprises at least one conduit 172 which extends from the termination 170 of the groove 168 to the outer face 138E of the plate 138, at the right of the position of the through hole 158 of the electronic card. According to one embodiment, the duct 172 comprises a first perforated section 174 in the honeycomb structure 136 and approximately parallel to the plates 138, 138 'and a second perforated section 176 which extends from the outer face 138E of the plate 138 until the first perforated section 174. These perforated sections 174 and 176 have a diameter sufficient to allow the routing of the supply cable 156.

Comme pour la première variante, la saignée 168 est remplie d'un matériau de remplissage 178 assurant l'étanchéité au fluide. Avantageusement, le matériau de remplissage 178 est une résine, notamment la même que celle utilisée pour le joint périphérique 154.As for the first variant, the groove 168 is filled with a filling material 178 ensuring fluid tightness. Advantageously, the filling material 178 is a resin, in particular the same as that used for the peripheral seal 154.

Comme illustré sur la figure 15B, la saignée 168 a une largeur et une profondeur adaptées pour permettre le positionnement du câble d'alimentation 156 dans la structure alvéolaire 136.As illustrated on the figure 15B , the bleeding 168 has a width and a depth adapted to allow the positioning of the supply cable 156 in the cellular structure 136.

Selon une troisième variante illustrée sur les figures 16A, 16B, 16C, 17 et 18, le panneau 134 comprend une cavité 180 située entre le chant périphérique du panneau 134 et le capot 150. Cette cavité 180 permet de loger au moins un élément électrique ou électronique 182, comme par exemple une connectique entre deux câbles d'alimentation et/ou un capteur de présence et/ou un capteur de luminosité et/ou une carte électronique. Ces éléments sont représentés de manière symbolique par un parallélépipède.According to a third variant illustrated on Figures 16A, 16B, 16C, 17 and 18 the panel 134 comprises a cavity 180 situated between the peripheral edge of the panel 134 and the cover 150. This cavity 180 makes it possible to house at least one electrical or electronic element 182, such as for example a connection between two power cables and / or a presence sensor and / or a brightness sensor and / or an electronic card. These elements are symbolically represented by a parallelepiped.

Cette cavité 180 est obtenue par une découpe de la plaque 138 et de la structure alvéolaire 136 jusqu'à la plaque 138' qui reste intacte.This cavity 180 is obtained by cutting the plate 138 and the honeycomb structure 136 to the plate 138 'which remains intact.

Ainsi, la cavité 180 est délimitée par un chant périphérique 184 qui s'étend entre les deux plaques 138 et 138' et un fond 186 qui correspond à une partie de la face intérieure 138'I de la plaque 138'.Thus, the cavity 180 is delimited by a peripheral edge 184 which extends between the two plates 138 and 138 'and a bottom 186 which corresponds to a portion of the inner face 138' I of the plate 138 '.

Pour assurer l'étanchéité, comme le chant périphérique du panneau 134, le chant périphérique 184 de la cavité 180 comprend un joint périphérique 188 qui s'étend sur toute la longueur du chant périphérique 184 et entre les deux plaques 138, 138'. Selon un mode de réalisation, le joint périphérique 188 est réalisé en résine et obtenu par exemple par surmoulage.To seal, as the peripheral edge of the panel 134, the peripheral edge 184 of the cavity 180 comprises a peripheral seal 188 which extends over the entire length of the peripheral edge 184 and between the two plates 138, 138 '. According to one embodiment, the peripheral seal 188 is made of resin and obtained for example by overmolding.

Pour fermer la cavité, le dispositif d'éclairage comprend un capot 187 dont le bord périphérique est en appui contre la face extérieure 138E de la plaque 138 sur tout le pourtour de la cavité 180. Avantageusement, un joint 190 est intercalé entre le bord périphérique du capot 187 et la plaque 138 pour parfaire l'étanchéité.To close the cavity, the lighting device comprises a cover 187 whose peripheral edge bears against the outer face 138E of the plate 138 all around the periphery of the cavity 180. Advantageously, a seal 190 is interposed between the peripheral edge the cover 187 and the plate 138 to complete the seal.

Le capot 187 peut être réalisé en un matériau opaque ou transparent.The cover 187 may be made of an opaque or transparent material.

Pour le cheminement du câble d'alimentation 156, le panneau 134 comprend un premier conduit 191 entre le chant périphérique du panneau 134 et la cavité 180 et au moins un deuxième conduit 192 entre la cavité 180 et le trou de passage 158 de la carte électronique. Quelle que soit la variante, le câble d'alimentation 156 traverse le joint périphérique 154 positionné sur toute la périphérie du panneau 134 ou un capot 187 via un presse étoupe 160 avant de cheminer entre les deux plaques 138, 138'. En présence d'une cavité 180, il n'est pas nécessaire de prévoir un presse étoupe au niveau du joint périphérique 188 de la cavité. Comme illustré sur la figure 13, un panneau peut comprendre une cavité 180 reliée à plusieurs cartes électroniques.For the path of the power cable 156, the panel 134 comprises a first conduit 191 between the peripheral edge of the panel 134 and the cavity 180 and at least a second conduit 192 between the cavity 180 and the through hole 158 of the electronic card. . Whatever the variant, the power cable 156 passes through the peripheral seal 154 positioned over the entire periphery of the panel 134 or a cover 187 via a gland 160 before proceeding between the two plates 138, 138 '. In the presence of a cavity 180, it is not necessary to provide a gland at the peripheral seal 188 of the cavity. As illustrated on the figure 13 a panel may comprise a cavity 180 connected to a plurality of electronic cards.

En variante, comme illustré sur la figure 13, une saignée comblée par un matériau de remplissage peut être prévue pour acheminer le câble d'alimentation 156 du chant périphérique du panneau 134 jusqu'à la cavité 180. De même, le deuxième conduit 192 peut être au moins partiellement remplacé par une saignée comblée par un matériau de remplissage.Alternatively, as illustrated on the figure 13 , a groove filled with a filling material may be provided to route the power cable 156 of the song panel peripheral 134 to cavity 180. Similarly, second conduit 192 may be at least partially replaced by a groove filled with filler material.

Avantageusement, le ou les câbles peuvent être positionnés dans une ou plusieurs gaines 194. Selon cette configuration, la gaine peut être noyée partiellement ou en totalité dans le matériau de remplissage. Ainsi, un câble qui passe dans la gaine 194 peut être retiré ou changé.Advantageously, the cable or cables may be positioned in one or more sheaths 194. According to this configuration, the sheath may be embedded partially or entirely in the filling material. Thus, a cable that passes into the sheath 194 can be removed or changed.

Selon un autre caractéristique, le dispositif d'éclairage comprend un ruban de matière 196 intercalé entre le bord périphérique de chaque capot 150 et la plaque 138 au droit des éléments de fixation 198 prévus pour fixer ledit capot au panneau 134. Ce ruban de matière 196 permet d'augmenter l'épaisseur de la plaque 138 pour assurer une prise satisfaisante des éléments de fixation 198.According to another characteristic, the lighting device comprises a ribbon of material 196 interposed between the peripheral edge of each cap 150 and the plate 138 to the right of the fixing elements 198 provided for fixing said cap to the panel 134. This ribbon of material 196 allows to increase the thickness of the plate 138 to ensure a satisfactory grip of the fastening elements 198.

Ce ruban de matière 196 est solidaire de la plaque 138 du panneau 134. Selon un mode de réalisation, le ruban de matière 196 est en résine et est obtenu par surmoulage ce qui permet d'obtenir une accroche entre le ruban de matière 196 et la plaque 138.This ribbon of material 196 is integral with the plate 138 of the panel 134. According to one embodiment, the material ribbon 196 is made of resin and is obtained by overmolding which makes it possible to obtain a catch between the material ribbon 196 and the plate 138.

De préférence, le bord périphérique d'un capot 150 ou d'un couvercle 187 comprend une face de contact 200 orientée vers la plaque 138. Cette face de contact 200 comprend une gorge 202 pour loger un joint 152 ou 190 ainsi qu'un décrochement 204 configuré pour loger le ruban de matière 196.Preferably, the peripheral edge of a cover 150 or cover 187 comprises a contact face 200 facing the plate 138. This contact surface 200 comprises a groove 202 for housing a seal 152 or 190 and a recess 204 configured to house the material ribbon 196.

Le ruban de matière 196, le matériau de remplissage, les joints périphériques 154 et 188 sont réalisés à partir de la même résine et sont obtenus lors d'une même opération de surmoulage.The material ribbon 196, the filling material, the peripheral seals 154 and 188 are made from the same resin and are obtained during the same overmolding operation.

Sur les figures 17 et 18, on a illustré une attache 206 pour relier le panneau 134 à un support 214. Avantageusement, cette attache 206 comprend au moins une articulation pour orienter le panneau 134.On the Figures 17 and 18 , there is illustrated a fastener 206 for connecting the panel 134 to a support 214. Advantageously, this fastener 206 comprises at least one hinge for orienting the panel 134.

Selon un mode de réalisation, l'attache 206 comprend deux méplats en U 208 et au moins un cylindre 210 positionné entre les branches des méplats au niveau de la base de la forme en U. Pour chaque méplat 208, une première branche 212 est plaquée et fixée contre la face extérieure 138E de la plaque 138 solidaire du panneau et une seconde branche 212' est plaquée et fixée contre la face extérieure 138'E de la plaque 138'. Des fixations 216 permettent de solidariser les branches 212 et 212' au panneau 134.According to one embodiment, the fastener 206 comprises two U-shaped flats 208 and at least one cylinder 210 positioned between the flats of the flats at the base of the U-shape. For each flange 208, a first branch 212 is plated. and fixed against the outer face 138E of the plate 138 secured to the panel and a second branch 212 'is plated and fixed against the outer face 138'E of the plate 138'. Fasteners 216 make it possible to secure the branches 212 and 212 'to the panel 134.

Claims (10)

  1. Lighting device comprising a support (16), at least one electronic circuit board (148) upon which light-emitting diodes are installed and which is positioned against the support (16), a cover (20, 42, 150) which covers the electronic circuit board (148), the support (16) being a metal panel (134) comprised of two flat plates (138, 138') and a cellular structure (136) which is interposed between the two flat plates (138, 138'), the cellular structure (136) comprising a plurality of ducts, each of which is delimited by at least one wall (140) perpendicular to the plates (138, 138'), and the electronic circuit board (148) being positioned against a first surface (138E) of one of the two plates (138), a second surface (1381) of said plate (138), which is opposite the first surface (138E), being in contact with the cellular structure (136), characterized in that
    a power supply cable (156) is connected to the electronic circuit board (148), a part of the electric cable (156) being arranged between the two plates (138, 138'), and in that the panel (134) comprises a peripheral seal (154) which covers the entire peripheral edge of the panel.
  2. Lighting device according to Claim 1, characterized in that the panel (134) comprises a cable gland (160) which is positioned at the level of said peripheral seal (154) and surrounding the power supply cable (156), which is configured to permit said power supply cable (156) to penetrate the peripheral seal (154) in a leak-tight manner.
  3. Lighting device according to one of the preceding claims, characterized in that the panel (134) comprises at least one groove (162, 168) for the accommodation of the power supply cable (156), which is filled with a filler material (164, 178).
  4. Lighting device according to the preceding claim, characterized in that the groove (168) extends to a terminal point (170) having an exterior offset in relation to a peripheral edge of a cover (150, 187).
  5. Lighting device as claimed in one of the preceding claims, characterized in that the panel (134) comprises a cavity (180) which emerges at the level of a plate (138), said cavity being closed in a leak-tight manner by a cover (187).
  6. Lighting device according to the preceding claim, characterized in that the cavity (180) comprises a peripheral seal (188) which covers the entire peripheral edge of said cavity (180).
  7. Lighting device according to one of the preceding claims, characterized in that the panel (134) comprises a strip of material (196) which is interposed between the peripheral edge of each cover (150, 187) and the plate (138), adjacently to the fixing elements (198) which are provided for the attachment of said cover to the panel (134).
  8. Lighting device according to one of the preceding claims, characterized in that the ducts of the cellular structure (136) each have a surface area of the order of 1 cm2.
  9. Lighting device according to one of the preceding claims, characterized in that it comprises a control function (142) for the regulation of the supply current to the light-emitting diodes (144), and a temperature sensor (146) installed in the vicinity of the light-emitting diodes (144) which is connected to the control function (142) which is configured for the regulation of the supply current to the light-emitting diodes (144), such that the temperature measured by the temperature sensor (146) remains below a threshold temperature.
  10. Lighting device according to Claim 9, characterized in that the temperature sensor (146) is attached to the electronic circuit board (148) which carries the light-emitting diodes (144).
EP15183258.1A 2014-09-01 2015-09-01 Lighting device including an improved mounting Active EP2990723B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1458159A FR3025294B1 (en) 2014-09-01 2014-09-01 LIGHTING DEVICE INCORPORATING ENHANCED SEALING
FR1458160A FR3025292B1 (en) 2014-09-01 2014-09-01 LIGHTING DEVICE INCORPORATING AN IMPROVED SUPPORT

Publications (2)

Publication Number Publication Date
EP2990723A1 EP2990723A1 (en) 2016-03-02
EP2990723B1 true EP2990723B1 (en) 2017-08-09

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ID=54010996

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Application Number Title Priority Date Filing Date
EP15183258.1A Active EP2990723B1 (en) 2014-09-01 2015-09-01 Lighting device including an improved mounting

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EP (1) EP2990723B1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070247851A1 (en) * 2006-04-21 2007-10-25 Villard Russel G Light Emitting Diode Lighting Package With Improved Heat Sink
US7766511B2 (en) * 2006-04-24 2010-08-03 Integrated Illumination Systems LED light fixture
DE202008001506U1 (en) * 2008-01-31 2008-03-27 Domag Led Technology Co., Ltd., Zhonghe City Cooling device for LED lamp
FR2944853B1 (en) 2009-04-27 2012-10-12 Hmi Innovation LED LIGHTING DEVICE INCORPORATING A SUPPORT FOR THERMAL DISSIPATION.
CN201429055Y (en) * 2009-07-14 2010-03-24 柯建锋 Cooling device for LED lamp
GB2497282A (en) * 2011-12-02 2013-06-12 Marshalls Mono Ltd External lanterns and method of manufacture

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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