EP2947380B1 - Light-emitting module with light-emitting diode and screen - Google Patents

Light-emitting module with light-emitting diode and screen Download PDF

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Publication number
EP2947380B1
EP2947380B1 EP15168261.4A EP15168261A EP2947380B1 EP 2947380 B1 EP2947380 B1 EP 2947380B1 EP 15168261 A EP15168261 A EP 15168261A EP 2947380 B1 EP2947380 B1 EP 2947380B1
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EP
European Patent Office
Prior art keywords
light
collector
emitting module
module according
indexing
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
EP15168261.4A
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German (de)
French (fr)
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EP2947380A2 (en
EP2947380A3 (en
Inventor
Jean-Marie Flatres
Philippe Lopez
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.)
Valeo Vision SAS
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Valeo Vision SAS
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Publication of EP2947380A2 publication Critical patent/EP2947380A2/en
Publication of EP2947380A3 publication Critical patent/EP2947380A3/en
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Publication of EP2947380B1 publication Critical patent/EP2947380B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/47—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades

Definitions

  • the present invention relates to light emitting modules, and more particularly to modules in which the light source is a light emitting diode.
  • Such diodes are carried by a printed circuit board which allows the transmission of the control instructions for switching on and off the diode by an on-board control module.
  • these printed circuit boards are mounted on support means capable of dissipating, in particular by appropriate ribbing, the significant thermal radiation specific to the operation of the light-emitting diodes.
  • the light emitting module is arranged so that the diode emits light towards a collector whose arrangement and coating allows reflection of the rays so that they leave the light emitting module according to a desired transmission axis.
  • the collector may be substantially elliptical and the diode placed at its first focus so that a lens placed at the second focus allows the output of light rays parallel to the optical axis of the assembly.
  • the diode is a point source of light, that is to say that it emits in a precise beam, some rays are emitted with an angular dispersion and it is impossible to ensure that the reflection in the collector of these scattered rays leads to an emission output along said desired axis.
  • the emission modules it is known to use a concealer, that is to say a concealed cover which directly blocks the scattered light rays at the output of the diode. It is appropriate in these modules to ensure the position of the concealer both with respect to the diode and with respect to the collector so that the concealer only blocks the scattered rays that can not be reflected correctly inside the module , and that it does not block other rays, which could decrease the photometric performance of the light emitting module.
  • the document EP2573456 A1 discloses a module light emission in which a shield is screwed onto the heat sink of the module.
  • the invention proposes a light emitting module in which the position of the occluder, and the means provided to ensure this position, are specific.
  • the invention proposes a light emitting module, comprising a light-emitting diode which is able to emit light rays in optical deflection means of a collector and which is carried by a printed circuit board, said module comprising a concealer arranged in the vicinity of the diode, for blocking rays emitted directly by said diode.
  • This module is remarkable in that the collector comprises a fixing plate which allows in particular the attachment of the printed circuit board and the diode relative to the optical deflection means and the shield is held in position relative to the light emitting diode by clamping between the printed circuit board and the collector mounting plate.
  • fixing means which are particularly simple to implement, and which allow the occultor to be correctly positioned with respect to the collector and in particular the optical deflection means and with respect to the printed circuit board, and thus by compared to the diode.
  • these optical deflection means are reflecting surfaces, for example a support coated with a layer of reflective material.
  • the reflective surface can thus be obtained by aluminizing a support, for example a plastic support.
  • the concealer comprises a securing frame to the collector and an occulting wall of the light rays emitted by said light-emitting diode, the concealer being sandwiched between the printed circuit board and the fixing plate of the light-emitting diode. manifold in the area of the attachment frame.
  • the occultation wall which extends to the right of the diode and which forms the main blocking wall of scattered light rays, does not participate in the fixing of the occulter. In this way, the occultation function is optimized.
  • the attachment frame comprises three uprights, among which a central upright on either side of which lateral uprights are arranged.
  • the frame may further comprise indexing fins, which may in particular be arranged at the free end of the lateral uprights when the frame has.
  • indexing fins which may in particular be arranged at the free end of the lateral uprights when the frame has.
  • the occluder may be a folded part, formed of a metal sheet.
  • the occluder may have a thickness of between 0.3 and 0.5 mm.
  • the blackout can be covered on its inner face facing the diode, a black matte coating.
  • a light emitting module 2 comprises a collector 4, a printed circuit board 6 carrying a light-emitting diode 8 and an associated radiator 10 for cooling the printed circuits.
  • This module further comprises a concave 12 arranged next to the diode.
  • the collector 4 comprises optical deflection means and a fixing plate 16 made integral with these optical deflection means and which allows in particular the attachment of the radiator, the printed circuit board and the diode relative to the optical deflection means.
  • the optical deflection means take the form of a substantially elliptical wall 18 delimited in a vertical and longitudinal plane (that is to say in the plane of the representation of the figure 2 ) by an upper edge 20 secured to the fixing plate, and by a free lower edge 22.
  • the elliptical wall has a reflective inner surface to achieve the deviation of light rays emitted.
  • the elliptical wall has two foci among which a first home where the diode is located and a second home where there is an optical element, lens type and not shown here, to form the light rays at the output of the module.
  • the attachment plate 16 extends transversely the upper edge of the elliptical wall. It is advantageously integral with the elliptical wall but it will be understood that the latter can be attached to the fixing plate.
  • the fixing plate comprises, from one axial end to another, a joining edge 24 with the elliptical wall, a central clearance zone 26 and a plate 28 cut at its center to form two fastening tabs 30.
  • an upper face 32 and a lower face 34 are distinguished, the upper face being the face turned away from the optical deflection means and able to receive the radiator 10 and the printed circuit board 6.
  • the junction edge 24 has in the plane of the plate, perpendicular to the upper edge of the optical deflection means, a curved shape, substantially a circular portion oriented so that the ends 36 are recessed with respect to the clearance zone 26.
  • a barrel 38 is integrally formed with the upper face of the plate, to extend projecting from the joining edge.
  • the barrel has at its free end a boss 39.
  • the central clearance zone 26 there are two bores 40 of oblong dimensions formed in the thickness of the plate and these two oblong bores are arranged perpendicularly with respect to each other, that is to say that the long axes of the oblong bores are perpendicular.
  • the oblong bores here participate in the fixing from below of the plate by relative to the module, with clamping means not shown here, the fixing holes being on the radiator.
  • the clearance zone has a depth sufficient for the housing of a screw head, as illustrated in FIG. figure 2 .
  • the bore 42 is able to allow passage to peripheral fixing screws of the collector on the radiator
  • the indexing pad 44 is adapted to cooperate with indexing means of complementary shape carried by the radiator
  • the pin 46 is adapted to serve as a support for the printed circuit board carried by the radiator.
  • the light-emitting diode 8 is carried by the printed circuit board 6, and the latter is mounted relative to the collector so that the diode is in line with the optical deflection means, in the vicinity of the focus of the first reflector.
  • the light rays emitted by the diode are mainly directed inside the means of optical ray deflection.
  • the diode is positioned at a sufficient distance from the collector to avoid the formation of an electric arc, which can be formed when a light emitting diode is too close to an aluminized surface.
  • the printed circuit board 6 comprises a series of electrical circuits and a control module, said electrical circuits being able to transmit to the diode ignition control or extinguishing instructions.
  • the plate comprises five through holes, among which a first hole 48 and a second hole 50 of a first diameter, substantially equal to the diameter of the indexing studs 44, a third hole 52 and a fourth hole 54 of a second sufficiently large diameter. to allow the passage of a peripheral fixing screw 55, and a fifth hole 56 which is arranged in the center of the plate and which has an oblong shape. This fifth hole allows the passage of a central fixing screw 57 of the plate on the radiator.
  • the radiator which has substantially a parallelepiped shape, has, on one of these faces, a support face 58 of the printed circuit board 6. This is pressed against the radiator via the central fastening screw 57.
  • a central threaded bore 60 made in the thickness of the radiator from the support face 58 as visible on the figure 2 , allows to receive this screw.
  • the radiator also plays a role in plating the printed circuit board on the collector and for this purpose it comprises two peripheral threaded bores, not visible in the figures, suitable for extend facing fixing lugs 30 when the radiator is attached to the plate, and two straight bores not threaded, also not visible, each respectively disposed next to one of the peripheral threaded bores.
  • the peripheral tapped bores are adapted to receive the peripheral fixing screws and that the right bores are able to receive the indexing pads 44.
  • the radiator 10 has grooves 64 which function as heat exchangers to allow cooling of the printed circuit board and the associated diode.
  • the occluder 12 comprises a frame 66 and an occultation wall 68 substantially perpendicular to the frame.
  • the frame is formed by three uprights, including a central base upright 70 which is extended at each of its lateral ends by lateral uprights 72 which each form an angle of approximately 45 ° with the base upright.
  • the lateral uprights carry indexing vanes 74 which extend perpendicularly to the frame, so as to be substantially parallel to the concealment wall.
  • These fins are pierced at their center and the resulting pair of holes 76 form complementary fastening means of the barrels 38 of the manifold so as to form a male and female fastener assembly.
  • the attachment zone is offset transversely on either side of the occultation zone, located more centrally to be opposite the diode.
  • the occluder is formed from a metallized sheet, for example aluminum, and for example a thickness between 0.3 and 0.5 mm. Furthermore, the sheet may be covered with a matt coating, over the entire inner face 78, that is to say that facing the diode, both on the amounts of the frame that on the wall of occultation.
  • the printed circuit board 6 and the associated diode 8 are mounted on the radiator 10.
  • the printed circuit board is positioned against the support face 58 of the radiator. comparing the central tapped bore 60 of the radiator and the fifth oblong hole of the printed circuit board.
  • the central fixing screw 57 is inserted into the central threaded bore and the screw head bears against the printed circuit board to press against the radiator.
  • the central fixing screw in addition to its role of holding in position, allows the grounding of the assembly. It is observed that this assembly leaves a freedom of translation of the plate in a direction along the support face of the radiator by the presence of the oblong hole in the printed circuit board.
  • the occultor 12 is then placed in place by making the fastening means carried by the fins 74 of this occluder cooperate with the drums 38 carried by the collector.
  • the holes 76 formed at the center of the fins allow the fitting of the occluder around the bosses 39 disposed at the end of the barrels.
  • the height of the stop pins 46 carried by the collector, the height of the drums 38, and the thickness of the indexing vanes of the occluder 12 are determined to form a substantially horizontal receiving plane of the printed circuit board when the cover is in place on the collector, the upper face of the pions and the upper face of the fins of the concealer, when it is attached against the collector, to be located in the same plane.
  • the assembly formed in the first step is then mounted on the collector to grip the concealer between the collector and the printed circuit board. For this purpose, the assembly is lowered against the collector, and the clearance zone 26 allows this descent without interference of the central fixing screw head 57.
  • the indexing studs 44 are initially co-operated with this descent. in the indexing holes 48, 50 and then plays in a second step on the freedom of translation of the printed circuit board so that the indexing studs penetrate into the straight bores formed in the radiator.
  • the bores 42 of the tabs 30 and the holes 48, 50 of the plate 6 are correctly aligned to the right of the tapped holes of the radiator for the passage of the peripheral fixing screws.
  • the weight of the radiator immobilizes the printed circuit board, and it and the barrels carried by the collector make the shield is clamped at its indexing fins.
  • the gravity makes it possible to flatten the indexing fins vertically, which extend substantially horizontally against the collector, and thus to ensure that the position of the concealer and therefore of the concealment wall facing the diode is correctly fixed. carried by the printed circuit board.
  • the light module comprises a concealer whose position is ensured by minimizing the number of reported means, by clamping between a collector carrying means for optical deflection of the rays emitted by a diode, and a carrier plate of said diode.
  • the male and female fastening means capable of setting the occultor 112 in position by relative to the collector 104 are different in that the drums 138 are drilled at their center with a blind hole 80 adapted to receive a pin 82 integral with each of the indexing vanes 174.
  • these pins extend perpendicular to the indexing fins, from the side facing the concealment wall, so as to favor the stable position in which the concealment wall is positioned in the plane of the contact areas between the concealer and the collector.
  • the concealer 112 is sandwiched between the securing plate of the collector 104 and the printed circuit board 106 carried by the radiator 110.

Description

La présente invention concerne les modules d'émission de lumière, et elle concerne plus particulièrement les modules dans lesquels la source de lumière est une diode électroluminescente.The present invention relates to light emitting modules, and more particularly to modules in which the light source is a light emitting diode.

De telles diodes sont portées par une plaque de circuits imprimés qui permet la transmission des instructions de commande d'allumage et d'extinction de la diode par un module de commande embarqué sur la plaque. Classiquement, ces plaques de circuits imprimés sont montées sur des moyens supports, aptes à dissiper, notamment par un nervurage approprié, le rayonnement thermique important propre au fonctionnement des diodes électroluminescentes.Such diodes are carried by a printed circuit board which allows the transmission of the control instructions for switching on and off the diode by an on-board control module. Conventionally, these printed circuit boards are mounted on support means capable of dissipating, in particular by appropriate ribbing, the significant thermal radiation specific to the operation of the light-emitting diodes.

Le module d'émission de lumière est agencé de sorte que la diode émet de la lumière en direction d'un collecteur dont l'agencement et le revêtement permet une réflexion des rayons pour que ceux-ci quittent le module d'émission de lumière selon un axe d'émission souhaité. Le collecteur peut être sensiblement elliptique et la diode placée à son premier foyer pour qu'une lentille placée au deuxième foyer permette d'obtenir en sortie des rayons lumineux parallèles à l'axe optique de l'ensemble. Toutefois, et ce même si la diode est une source de lumière ponctuelle, c'est-à-dire qu'elle émet selon un faisceau précis, certains rayons sont émis avec une dispersion angulaire et il est impossible de s'assurer que la réflexion dans le collecteur de ces rayons dispersés amène à une émission en sortie selon ledit axe souhaité.The light emitting module is arranged so that the diode emits light towards a collector whose arrangement and coating allows reflection of the rays so that they leave the light emitting module according to a desired transmission axis. The collector may be substantially elliptical and the diode placed at its first focus so that a lens placed at the second focus allows the output of light rays parallel to the optical axis of the assembly. However, even if the diode is a point source of light, that is to say that it emits in a precise beam, some rays are emitted with an angular dispersion and it is impossible to ensure that the reflection in the collector of these scattered rays leads to an emission output along said desired axis.

On connaît dans les modules d'émission l'utilisation d'un occulteur, c'est-à-dire un cache disposé en regard qui bloque directement les rayons de lumière dispersés en sortie de diode. Il convient dans ces modules d'assurer la position de l'occulteur à la fois par rapport à la diode et par rapport au collecteur pour que l'occulteur ne bloque que les rayons dispersés qui ne sauraient être réfléchis correctement à l'intérieur du module, et qu'il ne bloque pas d'autres rayons, ce qui pourrait diminuer les performances photométriques du module d'émission de lumière. Ainsi, le document EP2573456 A1 divulgue un module d'émission de lumière dans lequel un occulteur est vissé sur le dissipateur de chaleur du module.In the emission modules, it is known to use a concealer, that is to say a concealed cover which directly blocks the scattered light rays at the output of the diode. It is appropriate in these modules to ensure the position of the concealer both with respect to the diode and with respect to the collector so that the concealer only blocks the scattered rays that can not be reflected correctly inside the module , and that it does not block other rays, which could decrease the photometric performance of the light emitting module. Thus, the document EP2573456 A1 discloses a module light emission in which a shield is screwed onto the heat sink of the module.

C'est dans ce contexte que l'invention propose un module d'émission de lumière dans lequel la position de l'occulteur, et les moyens prévus pour assurer cette position, sont spécifiques.It is in this context that the invention proposes a light emitting module in which the position of the occluder, and the means provided to ensure this position, are specific.

L'invention propose un module d'émission de lumière, comportant une diode électroluminescente qui est apte à émettre des rayons lumineux dans des moyens de déviation optique d'un collecteur et qui est portée par une plaque de circuits imprimés, ledit module comportant un occulteur disposé au voisinage de la diode, pour bloquer des rayons émis directement par ladite diode. Ce module est remarquable en ce que le collecteur comporte une plaque de fixation qui permet notamment la fixation de la plaque de circuits imprimés et de la diode par rapport aux moyens de déviation optique et l'occulteur est maintenu en position par rapport à la diode électroluminescente par enserrage entre la plaque de circuits imprimés et la plaque de fixation du collecteur.The invention proposes a light emitting module, comprising a light-emitting diode which is able to emit light rays in optical deflection means of a collector and which is carried by a printed circuit board, said module comprising a concealer arranged in the vicinity of the diode, for blocking rays emitted directly by said diode. This module is remarkable in that the collector comprises a fixing plate which allows in particular the attachment of the printed circuit board and the diode relative to the optical deflection means and the shield is held in position relative to the light emitting diode by clamping between the printed circuit board and the collector mounting plate.

Ainsi, on propose des moyens de fixation particulièrement simple à mettre en oeuvre, et qui permettent le positionnement correct de l'occulteur par rapport au collecteur et en particulier les moyens de déviation optique et par rapport à la plaque de circuits imprimés, et donc par rapport à la diode.Thus, there are provided fixing means which are particularly simple to implement, and which allow the occultor to be correctly positioned with respect to the collector and in particular the optical deflection means and with respect to the printed circuit board, and thus by compared to the diode.

Selon une caractéristique de l'invention, ces moyens de déviation optique sont des surfaces réfléchissantes, par exemple un support revêtu d'une couche de matériau réfléchissant. La surface réfléchissante peut ainsi être obtenue par aluminiage d'un support, par exemple un support en plastique.According to one characteristic of the invention, these optical deflection means are reflecting surfaces, for example a support coated with a layer of reflective material. The reflective surface can thus be obtained by aluminizing a support, for example a plastic support.

Selon une caractéristique de l'invention, l'occulteur comporte un cadre de fixation au collecteur et une paroi d'occultation des rayons lumineux émis par ladite diode électroluminescente, l'occulteur étant enserré entre la plaque de circuits imprimés et la plaque de fixation du collecteur dans la zone du cadre de fixation.According to a characteristic of the invention, the concealer comprises a securing frame to the collector and an occulting wall of the light rays emitted by said light-emitting diode, the concealer being sandwiched between the printed circuit board and the fixing plate of the light-emitting diode. manifold in the area of the attachment frame.

Ainsi, la paroi d'occultation, qui s'étend au droit de la diode et qui forme la paroi principale de blocage des rayons lumineux dispersés, ne participe pas à la fixation de l'occulteur. De la sorte, la fonction d'occultation est optimisée.Thus, the occultation wall, which extends to the right of the diode and which forms the main blocking wall of scattered light rays, does not participate in the fixing of the occulter. In this way, the occultation function is optimized.

Selon une réalisation de l'invention, le cadre de fixation comporte trois montants parmi lesquels un montant central de part et d'autre duquel sont disposés des montants latéraux.According to one embodiment of the invention, the attachment frame comprises three uprights, among which a central upright on either side of which lateral uprights are arranged.

Selon une réalisation de l'invention, le cadre peut comporter en outre des ailettes d'indexage, qui peuvent notamment être disposées à l'extrémité libre des montants latéraux lorsque le cadre en comporte. Ainsi, on procède à un dégagement latéral des moyens de fixation qui ne gêne pas la diffusion des rayons lumineux.According to one embodiment of the invention, the frame may further comprise indexing fins, which may in particular be arranged at the free end of the lateral uprights when the frame has. Thus, it proceeds to a lateral clearance of the fastening means which does not interfere with the diffusion of light rays.

L'invention peut également comporter au moins une des caractéristiques suivantes :

  • les ailettes d'indexage sont sensiblement perpendiculaires aux montants du cadre de fixation, et sensiblement parallèles à la paroi d'occultation ;
  • les ailettes d'indexage et le collecteur comportent des moyens de fixation mâles et femelles complémentaires ;
  • ces moyens mâles et femelles complémentaires peuvent comporter des pions venus de matière avec les ailettes d'indexage et des fûts s'étendant en saillie du collecteur, notamment perpendiculairement au collecteur, les pions étant aptes à être logés dans ces fûts ; les pions peuvent par exemple s'étendre perpendiculairement aux ailettes d'indexage ;
  • alternativement, ces moyens mâles et femelles complémentaires peuvent être formés par les ailettes d'indexage et des fûts d'indexage s'étendant en saillie du collecteur, notamment perpendiculairement au collecteur, les ailettes d'indexage étant percées en leur centre de manière à être emmanchées autour des fûts d'indexage;
  • les fûts peuvent être venus de matière avec le collecteur.
The invention may also include at least one of the following features:
  • the indexing fins are substantially perpendicular to the amounts of the fastening frame, and substantially parallel to the concealment wall;
  • the indexing fins and the collector comprise complementary male and female fastening means;
  • these complementary male and female means may comprise pawns integral with the indexing fins and barrels projecting from the collector, in particular perpendicularly to the collector, the pins being able to be housed in these barrels; the pins may for example extend perpendicularly to the indexing fins;
  • alternatively, these complementary male and female means may be formed by the indexing wings and indexing drums protruding from the collector, in particular perpendicularly to the collector, the indexing vanes being pierced at their center so as to be pressed around the indexing drums;
  • the drums can come from material with the collector.

Selon différentes caractéristiques spécifiques de l'occulteur, celui-ci peut être une pièce pliée, formée d'une tôle métallique.According to different specific characteristics of the occluder, it may be a folded part, formed of a metal sheet.

L'occulteur peut présenter une épaisseur comprise entre 0,3 et 0,5 mm.The occluder may have a thickness of between 0.3 and 0.5 mm.

L'occulteur peut être recouvert, sur sa face intérieure tournée vers la diode, d'un revêtement mat noir.The blackout can be covered on its inner face facing the diode, a black matte coating.

L'invention peut également comporter une ou plusieurs des caractéristiques suivantes :

  • la plaque de circuits imprimés est fixée sur un radiateur qui porte des moyens de serrage contre le collecteur de manière à ce que la plaque soit disposée entre le radiateur et le collecteur.
  • les moyens de serrage comportent deux vis de fixation périphériques du radiateur sur le collecteur, tandis que la plaque de circuits imprimés est fixée au radiateur par une vis de fixation centrale ;
  • des pions de butée sont prévus sur le collecteur pour recevoir en appui la plaque de circuits imprimés ;
  • la hauteur des pions de butée est calculée en fonction de la hauteur des fûts et de l'épaisseur des ailettes d'indexage de l'occulteur, de manière à ce que la face supérieure des pions et la face supérieure des ailettes d'indexage de l'occulteur, lorsque celui-ci est rapporté contre le collecteur, soient situées dans un même plan.
The invention may also include one or more of the following features:
  • the printed circuit board is fixed on a radiator which carries clamping means against the collector so that the plate is disposed between the radiator and the collector.
  • the clamping means comprise two peripheral fixing screws of the radiator on the manifold, while the printed circuit board is fixed to the radiator by a central fixing screw;
  • stop pins are provided on the manifold for supporting the printed circuit board;
  • the height of the stop pins is calculated as a function of the height of the drums and the thickness of the indexing vanes of the occluder, so that the upper face of the pins and the upper face of the indexing vanes of the the occulteur, when it is attached against the collector, are located in the same plane.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée d'un mode de réalisation qui va suivre et pour la compréhension de laquelle on se reportera aux dessins annexés parmi lesquels :

  • la figure 1 est une représentation en perspective éclatée d'un module d'émission de lumière selon l'un des modes de réalisation de l'invention, dans laquelle on distingue un collecteur, une plaque de circuits et un radiateur, ainsi qu'une diode et un occulteur apte à être logés entre la plaque de circuits imprimés et le collecteur, des moyens de serrage étant aptes à fixer le radiateur et la plaque de circuits imprimés par rapport au collecteur ;
  • la figure 2 est une vue de côté en coupe, dans un plan médian longitudinal, du module d'émission de lumière illustré sur la figure 1, selon l'un des modes de réalisation de l'invention ;
  • la figure 3 est une vue en perspective, de trois quarts arrière, du module d'émission de lumière illustré sur la figure 1, et dans lequel on a retiré le radiateur et la plaque de circuits imprimés, la diode étant ainsi représentée en suspens pour plus de visibilité ;
  • la figure 4 est une vue similaire à la figure 3, dans laquelle on a retiré l'occulteur et la diode pour laisser apparaître des pions d'indexage portés par le collecteur ;
  • la figure 5 est une vue de détail de la figure 4 illustrant l'un de ces pions d'indexage ;
  • la figure 6 est une vue de dessus du module d'émission de lumière illustré sur la figure 1 ;
  • la figure 7 est une vue en perspective de l'occulteur illustré sur la figure 1 ;
  • la figure 8 est une vue partielle en coupe selon l'axe VIII-VIII du module illustré sur la figure 6, dans laquelle on a illustré plus en détail la coopération de moyens d'indexage mâles et femelles portés par le collecteur et par l'occulteur ; et
  • la figure 9 est une vue similaire à celle de la figure 8, illustrant une variante de réalisation des moyens d'indexage mâles et femelles portés par le collecteur et par l'occulteur.
Other features and advantages of the invention will appear on reading the detailed description of an embodiment which follows and for the understanding of which reference will be made to the appended drawings in which:
  • the figure 1 is an exploded perspective view of a light emitting module according to one of the embodiments of the invention, in which there is a collector, a circuit board and a radiator, and a diode and a occulteur adapted to be housed between the printed circuit board and the collector, clamping means being adapted to fix the radiator and the printed circuit board relative to the collector;
  • the figure 2 is a sectional side view, in a longitudinal median plane, of the light emitting module illustrated in FIG. figure 1 according to one of the embodiments of the invention;
  • the figure 3 is a perspective view, three quarter rear, of the light emitting module shown on the figure 1 and in which the radiator and the circuit board have been removed, the diode thus being shown in abeyance for more visibility;
  • the figure 4 is a view similar to the figure 3 , in which the shield and the diode were removed to reveal indexing pins carried by the collector;
  • the figure 5 is a detail view of the figure 4 illustrating one of these indexing pieces;
  • the figure 6 is a top view of the light emitting module shown on the figure 1 ;
  • the figure 7 is a perspective view of the occultor shown on the figure 1 ;
  • the figure 8 is a partial sectional view along the axis VIII-VIII of the module illustrated on the figure 6 , in which there is illustrated in more detail the cooperation of male and female indexing means carried by the collector and the occluder; and
  • the figure 9 is a view similar to that of the figure 8 , illustrating an alternative embodiment of the male and female indexing means carried by the collector and the occluder.

Tel qu'illustré sur les figures, un module d'émission de lumière 2 selon l'invention comporte un collecteur 4, une plaque de circuits imprimés 6 porteuse d'une diode électroluminescente 8 et un radiateur 10 associé pour le refroidissement des circuits imprimés. Ce module comporte en outre un occulteur 12 agencé en regard de la diode.As illustrated in the figures, a light emitting module 2 according to the invention comprises a collector 4, a printed circuit board 6 carrying a light-emitting diode 8 and an associated radiator 10 for cooling the printed circuits. This module further comprises a concave 12 arranged next to the diode.

Le collecteur 4 comporte des moyens de déviation optiques et une plaque de fixation 16 rendue solidaire de ces moyens de déviation optiques et qui permet notamment la fixation du radiateur, de la plaque de circuits imprimés et de la diode par rapport aux moyens de déviation optique.The collector 4 comprises optical deflection means and a fixing plate 16 made integral with these optical deflection means and which allows in particular the attachment of the radiator, the printed circuit board and the diode relative to the optical deflection means.

Les moyens de déviation optique prennent la forme d'une paroi sensiblement elliptique 18, délimitée dans un plan vertical et longitudinal (c'est à dire dans le plan de la représentation de la figure 2) par un bord supérieur 20, solidaire de la plaque de fixation, et par un bord inférieur libre 22. La paroi elliptique présente une surface interne réfléchissante pour réaliser la déviation des rayons lumineux émis. La paroi elliptique présente deux foyers parmi lesquels un premier foyer où on dispose la diode et un deuxième foyer où on dispose un élément optique, de type lentille et ici non représenté, pour conformer les rayons lumineux en sortie du module.The optical deflection means take the form of a substantially elliptical wall 18 delimited in a vertical and longitudinal plane (that is to say in the plane of the representation of the figure 2 ) by an upper edge 20 secured to the fixing plate, and by a free lower edge 22. The elliptical wall has a reflective inner surface to achieve the deviation of light rays emitted. The elliptical wall has two foci among which a first home where the diode is located and a second home where there is an optical element, lens type and not shown here, to form the light rays at the output of the module.

La plaque de fixation 16 prolonge transversalement le bord supérieur de la paroi elliptique. Elle est avantageusement venue de matière avec la paroi elliptique mais on comprendra que cette dernière peut être rapportée sur la plaque de fixation.The attachment plate 16 extends transversely the upper edge of the elliptical wall. It is advantageously integral with the elliptical wall but it will be understood that the latter can be attached to the fixing plate.

La plaque de fixation comporte d'une extrémité axiale à une autre une bordure de jonction 24 avec la paroi elliptique, une zone de dégagement central 26 et une platine 28 coupée en son centre pour former deux pattes de fixation 30.The fixing plate comprises, from one axial end to another, a joining edge 24 with the elliptical wall, a central clearance zone 26 and a plate 28 cut at its center to form two fastening tabs 30.

On distingue sur la platine une face supérieure 32 et une face inférieure 34, la face supérieure étant la face tournée à l'opposé des moyens de déviation optique et apte à recevoir le radiateur 10 et la plaque de circuits imprimés 6.On the plate, an upper face 32 and a lower face 34 are distinguished, the upper face being the face turned away from the optical deflection means and able to receive the radiator 10 and the printed circuit board 6.

La bordure de jonction 24 présente dans le plan de la plaque, perpendiculaire au bord supérieur des moyens de déviation optique, une forme courbe, sensiblement une portion circulaire orientée de sorte que les extrémités 36 sont en retrait par rapport à la zone de dégagement 26. A chaque extrémité, un fût 38 est venu de matière avec la face supérieure de la plaque, pour s'étendre en saillie de la bordure de jonction. Le fût présente à son extrémité libre un bossage 39.The junction edge 24 has in the plane of the plate, perpendicular to the upper edge of the optical deflection means, a curved shape, substantially a circular portion oriented so that the ends 36 are recessed with respect to the clearance zone 26. At each end, a barrel 38 is integrally formed with the upper face of the plate, to extend projecting from the joining edge. The barrel has at its free end a boss 39.

Dans la zone de dégagement central 26, on prévoit deux alésages 40 de dimensions oblongues formés dans l'épaisseur de la plaque et ces deux alésages oblongs sont agencés perpendiculairement l'un par rapport à l'autre, c'est-à-dire que les grands axes des alésages oblongs sont perpendiculaires. Les alésages oblongs participent ici à la fixation par le dessous de la platine par rapport au module, avec des moyens de serrage ici non représentés, les trous de fixation étant sur le radiateur. Par ailleurs, la zone de dégagement présente une profondeur suffisante pour le logement d'une tête de vis, tel qu'illustré sur la figure 2.In the central clearance zone 26, there are two bores 40 of oblong dimensions formed in the thickness of the plate and these two oblong bores are arranged perpendicularly with respect to each other, that is to say that the long axes of the oblong bores are perpendicular. The oblong bores here participate in the fixing from below of the plate by relative to the module, with clamping means not shown here, the fixing holes being on the radiator. Furthermore, the clearance zone has a depth sufficient for the housing of a screw head, as illustrated in FIG. figure 2 .

Les pattes de fixation 30, symétriques l'une de l'autre par rapport au plan médian de la plaque de fixation, portent chacune un alésage 42 et un plot d'indexage 44, ainsi qu'un pion de butée 46, de hauteur moindre que celle du plot d'indexage.The fixing lugs 30, symmetrical to one another relative to the median plane of the fixing plate, each carry a bore 42 and an indexing pad 44, as well as a stopper pin 46, of lesser height. than that of the indexing pad.

Tel que cela sera décrit ci-après, l'alésage 42 est apte à laisser passage à des vis de fixation périphériques du collecteur sur le radiateur, le plot d'indexage 44 est apte à coopérer avec des moyens d'indexage de forme complémentaire portés par le radiateur et le pion 46 est apte à servir d'appui à la plaque de circuits imprimés portée par le radiateur.As will be described below, the bore 42 is able to allow passage to peripheral fixing screws of the collector on the radiator, the indexing pad 44 is adapted to cooperate with indexing means of complementary shape carried by the radiator and the pin 46 is adapted to serve as a support for the printed circuit board carried by the radiator.

La diode électroluminescente 8 est portée par la plaque de circuits imprimés 6, et celle-ci est montée par rapport au collecteur de sorte que la diode se trouve à l'aplomb des moyens de déviation optique , au voisinage du foyer du premier réflecteur. Les rayons lumineux émis par la diode sont principalement dirigés à l'intérieur des moyens de déviation optique des rayons. La diode est positionnée à une distance suffisante du collecteur pour éviter la formation d'un arc électrique, qui peut se former lorsqu'une diode électroluminescente se retrouve trop près d'une surface aluminée.The light-emitting diode 8 is carried by the printed circuit board 6, and the latter is mounted relative to the collector so that the diode is in line with the optical deflection means, in the vicinity of the focus of the first reflector. The light rays emitted by the diode are mainly directed inside the means of optical ray deflection. The diode is positioned at a sufficient distance from the collector to avoid the formation of an electric arc, which can be formed when a light emitting diode is too close to an aluminized surface.

La plaque de circuits imprimés 6 comporte une série de circuits électriques et un module de commande, lesdits circuits électriques étant aptes à transmettre à la diode des instructions de commande d'allumage ou d'extinction.The printed circuit board 6 comprises a series of electrical circuits and a control module, said electrical circuits being able to transmit to the diode ignition control or extinguishing instructions.

La plaque comporte cinq trous traversants parmi lesquels un premier trou 48 et un deuxième trou 50 d'un premier diamètre, sensiblement égal au diamètre des plots d'indexage 44, un troisième trou 52 et un quatrième trou 54 d'un deuxième diamètre suffisamment grand pour permettre le passage d'une vis de fixation périphérique 55, et un cinquième trou 56 qui est disposé au centre de la plaque et qui présente une forme oblongue. Ce cinquième trou permet le passage d'une vis de fixation centrale 57 de la plaque sur le radiateur.The plate comprises five through holes, among which a first hole 48 and a second hole 50 of a first diameter, substantially equal to the diameter of the indexing studs 44, a third hole 52 and a fourth hole 54 of a second sufficiently large diameter. to allow the passage of a peripheral fixing screw 55, and a fifth hole 56 which is arranged in the center of the plate and which has an oblong shape. This fifth hole allows the passage of a central fixing screw 57 of the plate on the radiator.

A cet effet, le radiateur, qui présente sensiblement une forme de parallélépipède, présente, sur une de ces faces, une face de support 58 de la plaque de circuits imprimés 6. Celle-ci est plaquée contre le radiateur par l'intermédiaire de la vis de fixation centrale 57. Un alésage taraudé central 60, réalisé dans l'épaisseur du radiateur depuis la face de support 58 tel qu'il est visible sur la figure 2, permet de recevoir cette vis.For this purpose, the radiator, which has substantially a parallelepiped shape, has, on one of these faces, a support face 58 of the printed circuit board 6. This is pressed against the radiator via the central fastening screw 57. A central threaded bore 60, made in the thickness of the radiator from the support face 58 as visible on the figure 2 , allows to receive this screw.

Par ailleurs, tel que cela sera décrit ci-après, le radiateur joue en outre un rôle pour le plaquage de la plaque de circuits imprimés sur le collecteur et il comporte à cet effet deux alésages taraudés périphériques, non visible sur les figures, aptes à s'étendre en regard des pattes de fixation 30 lorsque le radiateur est rapporté sur la platine, et deux alésages droits non taraudés, également non visibles, chacun respectivement disposé à côté de l'un des alésages taraudés périphériques. On comprend que les alésages taraudés périphériques sont aptes à recevoir les vis de fixation périphériques et que les alésages droits sont aptes à recevoir les plots d'indexages 44.Furthermore, as will be described hereinafter, the radiator also plays a role in plating the printed circuit board on the collector and for this purpose it comprises two peripheral threaded bores, not visible in the figures, suitable for extend facing fixing lugs 30 when the radiator is attached to the plate, and two straight bores not threaded, also not visible, each respectively disposed next to one of the peripheral threaded bores. It will be understood that the peripheral tapped bores are adapted to receive the peripheral fixing screws and that the right bores are able to receive the indexing pads 44.

De façon classique, le radiateur 10 comporte des rainures 64 qui ont une fonction d'échangeurs thermiques pour permettre le refroidissement de la plaque de circuits imprimés et de la diode associée.Typically, the radiator 10 has grooves 64 which function as heat exchangers to allow cooling of the printed circuit board and the associated diode.

L'occulteur 12 comporte un cadre 66 et une paroi d'occultation 68 sensiblement perpendiculaire au cadre. Le cadre est formé par trois montants parmi lesquels un montant central de base 70 qui est prolongé à chacune de ses extrémités latérales par des montants latéraux 72 qui forment chacun un angle d'environ 45° avec le montant de base. A leur extrémité libre, les montants latéraux portent des ailettes d'indexage 74 qui prolongent perpendiculairement le cadre, de manière à être sensiblement parallèles à la paroi d'occultation. Ces ailettes sont percées en leur centre et la paire de trous 76 qui en résulte forme des moyens de fixation complémentaires des fûts 38 du collecteur de manière à former un ensemble de fixation mâle et femelle.The occluder 12 comprises a frame 66 and an occultation wall 68 substantially perpendicular to the frame. The frame is formed by three uprights, including a central base upright 70 which is extended at each of its lateral ends by lateral uprights 72 which each form an angle of approximately 45 ° with the base upright. At their free end, the lateral uprights carry indexing vanes 74 which extend perpendicularly to the frame, so as to be substantially parallel to the concealment wall. These fins are pierced at their center and the resulting pair of holes 76 form complementary fastening means of the barrels 38 of the manifold so as to form a male and female fastener assembly.

Ainsi, la zone de fixation est déportée transversalement de part et d'autre de la zone d'occultation, située plus centralement pour être en regard de la diode.Thus, the attachment zone is offset transversely on either side of the occultation zone, located more centrally to be opposite the diode.

L'occulteur est formé à partir d'une tôle métallisée, par exemple en aluminium, et par exemple d'une épaisseur comprise entre 0.3 et 0.5 mm. Par ailleurs, la tôle peut être recouverte d'un revêtement mat, sur l'ensemble de la face intérieure 78, c'est-à-dire celle tournée vers la diode, aussi bien sur les montants du cadre que sur la paroi d'occultation.The occluder is formed from a metallized sheet, for example aluminum, and for example a thickness between 0.3 and 0.5 mm. Furthermore, the sheet may be covered with a matt coating, over the entire inner face 78, that is to say that facing the diode, both on the amounts of the frame that on the wall of occultation.

On va maintenant décrire le montage du module d'émission de lumière de lumière selon l'invention.We will now describe the mounting of the light-emitting module according to the invention.

Dans un premier temps, on procède au montage de la plaque de circuits imprimés 6, et de la diode 8 associée, sur le radiateur 10. A cet effet, on positionne la plaque de circuits imprimés contre la face de support 58 du radiateur, en mettant en regard l'alésage taraudé central 60 du radiateur et le cinquième trou oblong de la plaque de circuits imprimés. On insère la vis de fixation centrale 57 dans l'alésage taraudé central et la tête de vis vient porter contre la plaque de circuits imprimés pour la plaquer contre le radiateur. La vis de fixation centrale, outre son rôle de maintien en position, permet la mise à la masse de l'ensemble. On observe que ce montage laisse une liberté de translation de la plaque dans une direction le long de la face de support du radiateur par la présence du trou oblong dans la plaque de circuits imprimés.In a first step, the printed circuit board 6 and the associated diode 8 are mounted on the radiator 10. For this purpose, the printed circuit board is positioned against the support face 58 of the radiator. comparing the central tapped bore 60 of the radiator and the fifth oblong hole of the printed circuit board. The central fixing screw 57 is inserted into the central threaded bore and the screw head bears against the printed circuit board to press against the radiator. The central fixing screw, in addition to its role of holding in position, allows the grounding of the assembly. It is observed that this assembly leaves a freedom of translation of the plate in a direction along the support face of the radiator by the presence of the oblong hole in the printed circuit board.

On met alors en place l'occulteur 12 en faisant coopérer les moyens de fixation portés par les ailettes 74 de cet occulteur avec les fûts 38 portés par le collecteur. Dans le mode de réalisation illustré, les trous 76 formés au centre des ailettes permettent l'emmanchement de l'occulteur autour des bossages 39 disposés en extrémité des fûts.The occultor 12 is then placed in place by making the fastening means carried by the fins 74 of this occluder cooperate with the drums 38 carried by the collector. In the illustrated embodiment, the holes 76 formed at the center of the fins allow the fitting of the occluder around the bosses 39 disposed at the end of the barrels.

On comprend que dans cet agencement, la hauteur des pions de butée 46 portés par le collecteur, la hauteur des fûts 38, et l'épaisseur des ailettes d'indexage de l'occulteur 12 sont déterminées pour former un plan de réception sensiblement horizontal de la plaque de circuits imprimés lorsque l'occulteur est en place sur le collecteur, la face supérieure des pions et la face supérieure des ailettes de l'occulteur, lorsque celui-ci est rapporté contre le collecteur, devant être situées dans un même plan.It is understood that in this arrangement, the height of the stop pins 46 carried by the collector, the height of the drums 38, and the thickness of the indexing vanes of the occluder 12 are determined to form a substantially horizontal receiving plane of the printed circuit board when the cover is in place on the collector, the upper face of the pions and the upper face of the fins of the concealer, when it is attached against the collector, to be located in the same plane.

On réalise ensuite le montage sur le collecteur de l'ensemble formé dans la première étape pour enserrer l'occulteur entre le collecteur et la plaque de circuits imprimés. A cet effet, on descend l'ensemble contre le collecteur, et la zone de dégagement 26 permet cette descente sans gêne de la tête de vis de fixation centrale 57. On fait coopérer dans un premier temps de cette descente les plots d'indexage 44 dans les trous d'indexage 48, 50 puis on joue dans un deuxième temps sur la liberté de translation de la plaque de circuits imprimés pour que les plots d'indexage pénètrent dans les alésages droits formé dans le radiateur.The assembly formed in the first step is then mounted on the collector to grip the concealer between the collector and the printed circuit board. For this purpose, the assembly is lowered against the collector, and the clearance zone 26 allows this descent without interference of the central fixing screw head 57. The indexing studs 44 are initially co-operated with this descent. in the indexing holes 48, 50 and then plays in a second step on the freedom of translation of the printed circuit board so that the indexing studs penetrate into the straight bores formed in the radiator.

Ainsi les alésages 42 des pattes 30 et les trous 48, 50 de la plaque 6 sont correctement alignés au droit des alésages taraudés du radiateur pour le passage des vis de fixation périphériques. Une fois ces vis serrées, le poids du radiateur immobilise la plaque de circuits imprimés, et celle-ci et les fûts portés par le collecteur font que l'occulteur est enserré au niveau de ses ailettes d'indexage. La gravité permet de plaquer verticalement les ailettes d'indexage, qui s'étendent sensiblement horizontalement contre le collecteur, et on s'assure ainsi de figer correctement la position de l'occulteur et donc de la paroi d'occultation en regard de la diode portée par la plaque de circuits imprimés.Thus the bores 42 of the tabs 30 and the holes 48, 50 of the plate 6 are correctly aligned to the right of the tapped holes of the radiator for the passage of the peripheral fixing screws. Once these screws are tightened, the weight of the radiator immobilizes the printed circuit board, and it and the barrels carried by the collector make the shield is clamped at its indexing fins. The gravity makes it possible to flatten the indexing fins vertically, which extend substantially horizontally against the collector, and thus to ensure that the position of the concealer and therefore of the concealment wall facing the diode is correctly fixed. carried by the printed circuit board.

Dans cette position de l'occulteur 12, on constate que les montants du cadre 66 participent également au blocage des rayons lumineux, de même que la paroi d'occultation 68.In this position of the occluder 12, it can be seen that the frame members 66 also participate in blocking the light rays, as well as the occulting wall 68.

Bien entendu, diverses modifications peuvent être apportées par l'homme du métier aux structures du module lumineux, qui viennent d'être décrites à titre d'exemples non limitatifs, dès lors que le module lumineux comporte un occulteur dont on assure la position en minimisant le nombre de moyens rapportés, par enserrage entre un collecteur porteur des moyens de déviation optique des rayons émis par une diode, et une plaque porteuse de ladite diode.Of course, various modifications can be made by those skilled in the art to the structures of the light module, which have just been described by way of non-limiting examples, since the light module comprises a concealer whose position is ensured by minimizing the number of reported means, by clamping between a collector carrying means for optical deflection of the rays emitted by a diode, and a carrier plate of said diode.

A titre d'exemple, dans la variante illustrée sur la figure 9, les moyens mâles et femelles de fixation aptes à mettre en position l'occulteur 112 par rapport au collecteur 104 sont différents en ce que les fûts 138 sont percés en leur centre d'un trou borgne 80 apte à recevoir un pion 82 venu de matière avec chacune des ailettes d'indexage 174. Avantageusement, ces pions s'étendent perpendiculairement aux ailettes d'indexage, depuis la face tournée vers la paroi d'occultation, de manière à privilégier la position stable dans laquelle la paroi d'occultation est positionnée sous le plan des zones de contacts entre l'occulteur et le collecteur. De même que dans le mode de réalisation initialement décrit, l'occulteur 112 est enserré entre la plaque de fixation du collecteur 104 et la plaque de circuits imprimés 106 portée par le radiateur 110.For example, in the variant illustrated on the figure 9 , the male and female fastening means capable of setting the occultor 112 in position by relative to the collector 104 are different in that the drums 138 are drilled at their center with a blind hole 80 adapted to receive a pin 82 integral with each of the indexing vanes 174. Advantageously, these pins extend perpendicular to the indexing fins, from the side facing the concealment wall, so as to favor the stable position in which the concealment wall is positioned in the plane of the contact areas between the concealer and the collector. As in the embodiment initially described, the concealer 112 is sandwiched between the securing plate of the collector 104 and the printed circuit board 106 carried by the radiator 110.

Claims (16)

  1. Light-emitting module, including a light-emitting diode (8) that is able to emit light rays into optical deviating means comprising a reflective surface of a collector (4) and that is borne by a printed circuit board (6), said module including an occulter (12) placed in the vicinity of the diode (8), in order to block rays directly emitted by said diode, characterized in that the collector (4) includes a fastening plate (16), which in particular allows the printed circuit board (6) and the diode (8) to be fastened with respect to the optical deviating means, and the occulter (12) is held in position with respect to the light-emitting diode (8) by clamping between the printed circuit board (6) and the fastening plate (16) of the collector (4).
  2. Light-emitting module according to Claim 1, characterized in that the occulter (12) includes a frame (66) for fastening to the collector and a wall (68) occulting the light rays emitted by said light-emitting diode (8), the occulter being clamped between the printed circuit board (6) and the fastening plate (16) of the collector (4) in the zone of the fastening frame.
  3. Light-emitting module according to Claim 2, characterized in that said fastening frame (66) includes three uprights among which a central upright (70), on either side of which are placed lateral uprights (72) .
  4. Light-emitting module according to Claim 2 or 3, characterized in that said frame furthermore includes indexing fins (74), in particular placed at the free end of the lateral uprights (72).
  5. Light-emitting module according to one of Claims 2 to 4, characterized in that the indexing fins (74) are substantially perpendicular to the uprights of the fastening frame (66), and substantially parallel to the occulting wall (68).
  6. Light-emitting module according to one of Claims 4 to 5, characterized in that the indexing fins (74; 174) and the collector (4; 104) include complementary male and female fastening means.
  7. Light-emitting module according to Claim 6, characterized in that these complementary male and female fastening means include pins (80) that are integrally formed with and made of the same material as the indexing fins (174) and shafts (138) that protrude from the collector (104), said pins being suitable for being housed in said shafts.
  8. Light-emitting module according to Claim 6, characterized in that these complementary male and female fastening means are formed by the indexing fins (74) and indexing shafts (38) that protrude from the collector (4), the indexing fins (74) being drilled in their centres so as to fit around the indexing shafts (38) .
  9. Light-emitting module according to Claim 7 or 8, characterized in that said shafts (38; 138) are integrally formed with and made of the same material as the collector (4; 104).
  10. Light-emitting module according to one of the preceding claims, characterized in that the occulter (12) is a folded part formed from a metal sheet.
  11. Light-emitting module according to one of the preceding claims, characterized in that the occulter (12) has a thickness comprised between 0.3 and 0.5 mm.
  12. Light-emitting module according to one of the preceding claims, characterized in that the occulter (12) is covered, on its interior face (78) turned toward the diode (8), with a matte black coating.
  13. Light-emitting module according to one of the preceding claims, characterized in that the printed circuit board (6) is fastened to a radiator (10) that bears means for clamping it against the collector (4) so that the board is placed between the radiator and the collector.
  14. Light-emitting module according to the preceding claim, characterized in that the clamping means include two peripheral screws (55) for fastening the radiator (10) to the collector (4), whereas the printed circuit board (6) is fastened to the radiator by a central fastening screw (57).
  15. Light-emitting module according to one of the preceding claims, characterized in that stop pins (46) are provided on the collector (4) in order to receive in abutment the printed circuit board (6).
  16. Light-emitting module according to the preceding claim, characterized in that the height of the stop pins (46) is calculated depending on the height of the shafts (38) and on the thickness of the indexing fins (74) of the occulter (12), so that the upper face of said pins and the upper face of said indexing fins, when the occulter is added against the collector (4), are located in the same plane.
EP15168261.4A 2014-05-20 2015-05-19 Light-emitting module with light-emitting diode and screen Active EP2947380B1 (en)

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EP2947380A2 (en) 2015-11-25
FR3021459A1 (en) 2015-11-27
EP2947380A3 (en) 2015-12-23
FR3021459B1 (en) 2016-06-03

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