EP2809984B1 - Led lighting module for the rear lights of a motor vehicle - Google Patents

Led lighting module for the rear lights of a motor vehicle Download PDF

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Publication number
EP2809984B1
EP2809984B1 EP13701483.3A EP13701483A EP2809984B1 EP 2809984 B1 EP2809984 B1 EP 2809984B1 EP 13701483 A EP13701483 A EP 13701483A EP 2809984 B1 EP2809984 B1 EP 2809984B1
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EP
European Patent Office
Prior art keywords
light
leds
function
mirror
semi
Prior art date
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Active
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EP13701483.3A
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German (de)
French (fr)
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EP2809984A1 (en
Inventor
Alain Buisson
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.)
Marelli Automotive Lighting France SAS
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Marelli Automotive Lighting France SAS
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Priority to PL13701483T priority Critical patent/PL2809984T4/en
Publication of EP2809984A1 publication Critical patent/EP2809984A1/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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/33—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors characterised by their material, surface treatment or coatings
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24-F21S41/28
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/251—Light guides the light guides being used to transmit light from remote light sources

Definitions

  • the present invention relates to the field of vehicle lighting and signaling, in particular motor vehicles. It relates more particularly to a device providing a three-dimensional effect (hereinafter referred to as the 3D effect) to the rear signaling and / or lighting lights of motor vehicles.
  • the 3D effect a three-dimensional effect
  • Such a device is for example known from the document WO 2011/113937 A1 .
  • a device for motor vehicle traffic lights providing a relief effect, and consisting of a combination of mirrors and semi-transparent mirrors, as well as a curtain or a guide- curtain, constituting a set of means by which the light emitted by at least one LED is distributed over the surface of the curtain and diffused with a striking relief effect.
  • the present invention aims to provide an original and particularly compact and practical means to implement, capable of providing a 3D effect to part of the lighting of the rear lights of motor vehicles.
  • the device according to the invention also makes it possible to add stylistic effects to the rear lights of said vehicles.
  • Another objective of the invention is to provide the maximum functionality, in an advantageously modular minimum volume, to a set of motor vehicle taillights, and yet to obtain a set of taillights providing not only the lighting and other expected , but still delivering images with 3D effect.
  • the device according to the invention can thus be qualified as the first “modular full LED” light, that is to say having only LEDs as light sources and in modular form.
  • such a module combines at least 2 LEDs associated with means intended to perform the function of light guide for a lantern, and 2 additional red LEDs for the stop function and / or 2 LEDs. additional orange for the flashing function and / or 2 additional white LEDs for the reversing function, while the LEDs for the stop function and for the flashing function can also be amber.
  • the light guide is advantageously of the type of those known to those skilled in the art, or as described in the patent application.
  • FR 0905984 of 11.12.2009 published under the number 2953781 A1 on behalf of the same plaintiff.
  • the mirror comprises at least one spare, that is to say at least one transparent or perforated surface part, located opposite at least one additional LED for stop function and / or for flashing function or reversing light.
  • the semi-transparent screen comprises, for its part, a savings opposite each of the light beams from the additional LEDs or opposite some of them.
  • the function of one or more additional LEDs does not itself have a 3D effect, the light emitted by this or these affected additional LED (s) passing through an optic suitable for its distribution into sub-beams, which pass through a saving. appropriate mirror and appropriate sparing of the semi-transparent screen.
  • the modular device according to the invention has the remarkable advantage of being able to be designed to be extremely compact.
  • a module in accordance with the invention can comprise, apart from assembly and / or junction elements, as well as the wiring and connections not shown, at least one printed circuit board 1, at least one light 2, at least two light concentrating optical parts for the stop function 3 and at least two light diffusing optical parts for the stop function 3 ', a mirror 4, a semi-transparent screen 5, and a housing assembly 6.
  • the light guide 2 for lantern and stop advantageously comprises at least two spare parts 7, while mirror 4 has at least two spare parts 8 and the semi-transparent screen 5 has at least two spare parts 9.
  • the stop function with 3D effect is provided by a set of 2 LEDs 10 combined with a light guide or curtain guide oriented appropriately to allow the spread of the light beam by successive reflections between the mirror and the semi screen. -transparent.
  • other LEDs, 10 '(two in number in the example illustrated) are assigned to the lantern function.
  • the stop function itself does not have a 3D effect.
  • the light emitted by the LEDs 10 passes through an optic suitable for its distribution in sub-beams 11, which pass through an appropriate spar 8 of the mirror 4 and an appropriate spar 9 of the semi-transparent screen 5.
  • At least one LED 10 is able to emit a light borrowing a light guide 2 combined with a mirror 4 in front of which is interposed a semi-transparent screen 5.
  • the light guide is not plane but conical, elliptical, semi-elliptical, hyperbolic, spiral, spiral logarithmic, helical, or other, the reflected light rays from successive reflections converge at the point of view of the observer.
  • the semi-transparent screen may or may not be provided with one or more savings.
  • stop function can be supplemented or replaced by a flashing function, with an amber LED and suitable control electronics.
  • the subject of the invention is also a light for a motor vehicle comprising a rear light device as described above.
  • the lighting module in particular for rear lights of motor vehicles, is in a compact form, and nevertheless provides intensities and functional lighting distributions satisfying the standards and even substantially improved, while the assembly of the device constitutes a removable and replaceable module if necessary, particularly practical and compact.

Description

La présente invention concerne le domaine de l'éclairage et de la signalisation des véhicules, notamment des véhicules automobiles. Elle concerne plus particulièrement un dispositif procurant un effet tridimensionnel (ci-après dénommé effet 3D) aux feux arrière de signalisation et/ou d'éclairage des véhicules automobiles.The present invention relates to the field of vehicle lighting and signaling, in particular motor vehicles. It relates more particularly to a device providing a three-dimensional effect (hereinafter referred to as the 3D effect) to the rear signaling and / or lighting lights of motor vehicles.

Un tel dispositif est par exemple connu du document WO 2011/113937 A1 .Such a device is for example known from the document WO 2011/113937 A1 .

Il est de plus en plus recherché de diminuer autant que possible le volume des boîtiers regroupant l'ensemble ou un sous-ensemble des feux arrière des véhicules, notamment de ceux dont la réglementation impose de doter les véhicules automobiles. Cela se trouve facilité par l'utilisation de LED à la place ou en complément des ampoules et des lampes classiques.It is increasingly sought to reduce as much as possible the volume of housings grouping together all or a sub-assembly of vehicle rear lights, in particular those for which the regulations require that motor vehicles be fitted. This is facilitated by the use of LEDs instead of or in addition to conventional bulbs and lamps.

Mais il pouvait a priori paraître contradictoire de tenter en même temps de donner une profondeur virtuelle, notamment un effet 3D, à l'éclairage émis par les boîtiers de feux arrière ayant un volume réduit.But it could a priori seem contradictory to try at the same time to give a virtual depth, in particular a 3D effect, to the lighting emitted by the rear light housings having a reduced volume.

On connaît dans d'autres domaines, en particulier dans la décoration intérieure de l'univers domestique ou professionnel, des systèmes de renvoi de lumière par des miroirs disposés en vis-à-vis pour procurer une impression d'infini par les réflexions successives de l'image du lieu renvoyée par chacun des miroirs tour à tour vers l'autre. les images avec sensation d'infini ainsi obtenues utilisent des miroirs plans, entièrement réfléchissants et donnent une impression qui ne varie pas substantiellement selon que l'on se place auprès ou loin de l'un des miroirs concernés. Quant aux sources de lumière mises en jeu, elles sont toutes situées en avant de l'un au moins des miroirs, tandis que l'observateur est, quant à lui, dans un espace situé entre les deux miroirs.There are known in other fields, in particular in the interior decoration of the domestic or professional universe, systems for returning light by mirrors arranged opposite each other to provide an impression of infinity by the successive reflections of the image of the place returned by each of the mirrors in turn to the other. the images with a sensation of infinity thus obtained use plane mirrors which are entirely reflective and give an impression which does not vary substantially depending on whether one is standing near or far from one of the mirrors concerned. As for the light sources involved, they are all located in front of at least one of the mirrors, while the observer is, for his part, in a space located between the two mirrors.

On a par ailleurs déjà décrit dans la demande de brevet FR 1001084 du 19.03.2010, au nom de la même demanderesse, un dispositif pour feu de signalisation de véhicules automobiles procurant un effet de relief, et consistant en une combinaison de miroirs et de miroirs semi-transparents, ainsi qu'un rideau ou un guide-rideau, constituant un ensemble de moyens grâce auquel la lumière émise par au moins une LED est répartie sur la surface du rideau et diffusée avec un effet de relief saisissant.It has also already been described in the patent application FR 1001084 of 19.03.2010, in the name of the same applicant, a device for motor vehicle traffic lights providing a relief effect, and consisting of a combination of mirrors and semi-transparent mirrors, as well as a curtain or a guide- curtain, constituting a set of means by which the light emitted by at least one LED is distributed over the surface of the curtain and diffused with a striking relief effect.

La présente invention vise à procurer un moyen original et particulièrement compact et pratique à mettre en oeuvre, apte à procurer un effet 3D à une partie de l'éclairage des feux arrière des véhicules automobiles. En option, le dispositif selon l'invention permet également d'ajouter des effets de style aux feux arrière desdits véhicules.The present invention aims to provide an original and particularly compact and practical means to implement, capable of providing a 3D effect to part of the lighting of the rear lights of motor vehicles. As an option, the device according to the invention also makes it possible to add stylistic effects to the rear lights of said vehicles.

Un autre objectif de l'invention est de procurer le maximum de fonctionnalités, dans un volume minimum avantageusement modulaire, à un ensemble de feux arrière de véhicule automobile, et d'obtenir cependant un ensemble de feux arrière procurant non seulement les éclairages et autres attendues, mais encore délivrant des images avec effet 3D.Another objective of the invention is to provide the maximum functionality, in an advantageously modular minimum volume, to a set of motor vehicle taillights, and yet to obtain a set of taillights providing not only the lighting and other expected , but still delivering images with 3D effect.

Sous un premier aspect, l'invention procure un nouveau dispositif de feux arrière pour véhicules automobiles, apte à procurer un effet 3D, comportant plusieurs sources de lumière de type LED, ledit dispositif étant composé d'un module comprenant, de l'arrière vers l'avant dans le sens du ou des faisceaux lumineux sensiblement parallèles émis par lesdites LED:

  • une plaquette à circuits imprimés (ci-après en abrégé PCB, pour "Printed Circuit Board en anglais), comportant au moins 3 LED, et de préférence au moins 5 LED rendues fonctionnelles par des circuits imprimés appropriés et une alimentation électrique externe,
  • un guide de lumière,
  • des pièces optiques appropriées pour guider et/ou répartir à convenance les faisceaux de l'une ou plusieurs desdites LED,
  • un miroir, avec ou sans des zones d'épargne,
  • au moins un écran semi-transparent,
  • ainsi qu'un boîtier optionnel pour contenir le tout dans une structure d'ensemble, de préférence étanche.
In a first aspect, the invention provides a new rear light device for motor vehicles, capable of providing a 3D effect, comprising several LED-type light sources, said device being composed of a module comprising, from the rear to the forward in the direction of the substantially parallel light beam (s) emitted by said LEDs:
  • a printed circuit board (hereinafter abbreviated PCB, for "Printed Circuit Board in English), comprising at least 3 LEDs, and preferably at least 5 LEDs made functional by suitable printed circuits and an external power supply,
  • a light guide,
  • optical parts suitable for guiding and / or distributing the beams of one or more of said LEDs at convenience,
  • a mirror, with or without saving zones,
  • at least one semi-transparent screen,
  • as well as an optional box to contain the whole in an overall structure, preferably waterproof.

Le dispositif selon l'invention peut ainsi être qualifié de premier feu "full LED modulaire", c'est-à-dire n'ayant que des LED comme sources de lumière et sous forme modulaire.The device according to the invention can thus be qualified as the first “modular full LED” light, that is to say having only LEDs as light sources and in modular form.

Selon l'invention, un tel module combine au moins 2 LED associées à des moyens destinés à assurer la fonction de guide de lumière pour lanterne, et 2 LED supplémentaires rouges pour la fonction stop et/ou 2 LED supplémentaires oranges pour la fonction clignotant et/ou 2 LED supplémentaires de couleur blanche pour la fonction recul, tandis que les LED pour la fonction stop et pour la fonction clignotant peuvent également être de couleur ambre.According to the invention, such a module combines at least 2 LEDs associated with means intended to perform the function of light guide for a lantern, and 2 additional red LEDs for the stop function and / or 2 LEDs. additional orange for the flashing function and / or 2 additional white LEDs for the reversing function, while the LEDs for the stop function and for the flashing function can also be amber.

Le guide de lumière est avantageusement du type de ceux connus de l'homme du métier, ou tel que décrit dans la demande de brevet FR 0905984 du 11.12.2009, publié sous le numéro 2953781 A1 au nom de la même demanderesse.The light guide is advantageously of the type of those known to those skilled in the art, or as described in the patent application. FR 0905984 of 11.12.2009, published under the number 2953781 A1 on behalf of the same plaintiff.

Dans un tel dispositif, le miroir comporte au moins une épargne, c'est-à-dire au moins une partie de surface transparente ou perforée, située en regard d'au moins une LED supplémentaire pour fonction stop et/ou pour fonction clignotant ou de feu de recul.In such a device, the mirror comprises at least one spare, that is to say at least one transparent or perforated surface part, located opposite at least one additional LED for stop function and / or for flashing function or reversing light.

Selon l'invention l'écran semi-transparent comporte, quant à lui, une épargne en regard de chacun des faisceaux lumineux issus des LED supplémentaires ou en regard de certains d'entre elles.According to the invention, the semi-transparent screen comprises, for its part, a savings opposite each of the light beams from the additional LEDs or opposite some of them.

Selon l'invention la fonction d'une ou plusieurs LED supplémentaires ne présente pas elle-même d'effet 3D, la lumière émise par cette ou ces LED supplémentaires affectées traversant une optique appropriée pour sa répartition en sous-faisceaux, qui traversent une épargne appropriée du miroir et une épargne appropriée de l'écran semi- transparent.According to the invention, the function of one or more additional LEDs does not itself have a 3D effect, the light emitted by this or these affected additional LED (s) passing through an optic suitable for its distribution into sub-beams, which pass through a saving. appropriate mirror and appropriate sparing of the semi-transparent screen.

Sous la condition que le refroidissement des LED par leur face arrière ne doit pas être entravé, et gagne même à être favorisé par des moyens appropriés connus de l'homme du métier, le dispositif modulaire selon l'invention présente l'avantage remarquable de pouvoir être conçu de manière à être extrêmement compact.Under the condition that the cooling of the LEDs by their rear face must not be hindered, and even benefit from being promoted by appropriate means known to those skilled in the art, the modular device according to the invention has the remarkable advantage of being able to be designed to be extremely compact.

L'invention sera mieux comprise, et d'autres objectifs, avantages et caractéristiques de celle-ci apparaîtront plus clairement à la lumière de la description détaillée ci-après de modes de réalisation alternatifs ou optionnels.The invention will be better understood, and other objectives, advantages and characteristics thereof will emerge more clearly in the light of the following detailed description of alternative or optional embodiments.

Ces modes de réalisation sont décrits à titre purement illustratif et non-limitatif, tandis que sont annexées à ladite description des planches de dessins dans lesquelles:

  • Fig. 1 représente une vue schématique en éclaté d'un module selon une forme de réalisation de l'invention;
  • Fig. 2 représente un schéma illustrant les trajets de la lumière émise par des LED pour une fonction stop avec effet 3D dans un module non couvert par les revendications,
  • Fig. 3 représente un schéma illustrant les trajets de la lumière émise par des LED pour une fonction stop sans effet 3D dans un module selon l'invention;
  • Fig. 4 représente un schéma illustrant les trajets de la lumière émise par une LED pour une fonction lanterne avec effet 3D dans un module selon l'invention;
  • Fig. 5 représente une vue schématique en élévation de la face éclairante d'un module non couvert par les revendications, avec visualisation d'une fonction lanterne avec effet 3D; et
  • Fig. 6 représente une vue schématique en élévation de la face éclairante d'un module selon l'invention, avec visualisation d'une fonction stop sans effet 3D.
These embodiments are described for purely illustrative and non-limiting, while are appended to said description of the drawing boards in which:
  • Fig. 1 shows a schematic exploded view of a module according to one embodiment of the invention;
  • Fig. 2 represents a diagram illustrating the paths of the light emitted by LEDs for a stop function with 3D effect in a module not covered by the claims,
  • Fig. 3 represents a diagram illustrating the paths of the light emitted by LEDs for a stop function without 3D effect in a module according to the invention;
  • Fig. 4 represents a diagram illustrating the paths of the light emitted by an LED for a lantern function with 3D effect in a module according to the invention;
  • Fig. 5 represents a schematic elevational view of the lighting face of a module not covered by the claims, with visualization of a lantern function with 3D effect; and
  • Fig. 6 represents a schematic elevational view of the lighting face of a module according to the invention, with visualization of a stop function without 3D effect.

Si l'on se réfère à la Figure 1, on voit qu'un module conforme à l'invention peut comporter, hormis des éléments d'assemblage et/ou de jonction, ainsi que les câblages et connexions non représentés, au moins une plaquette à circuits imprimés 1, au moins un guide de lumière 2, au moins deux pièces optiques de concentration de la lumière pour la fonction stop 3 et au moins deux pièces optiques de diffusion de la lumière pour la fonction stop 3', un miroir 4, un écran semi-transparent 5, et un boîtier d'assemblage 6. Le guide de lumière 2 pour lanterne et stop comporte avantageusement au moins deux épargnes 7, tandis que le miroir 4 comporte au moins deux épargnes 8 et que l'écran semi-transparent 5 comporte au moins deux épargnes 9.If we refer to the Figure 1 , it can be seen that a module in accordance with the invention can comprise, apart from assembly and / or junction elements, as well as the wiring and connections not shown, at least one printed circuit board 1, at least one light 2, at least two light concentrating optical parts for the stop function 3 and at least two light diffusing optical parts for the stop function 3 ', a mirror 4, a semi-transparent screen 5, and a housing assembly 6. The light guide 2 for lantern and stop advantageously comprises at least two spare parts 7, while mirror 4 has at least two spare parts 8 and the semi-transparent screen 5 has at least two spare parts 9.

Dans une forme de réalisation (voir Figure 2), la fonction stop avec effet 3D est assurée par un ensemble de 2 LED 10 combinées avec un guide de lumière ou guide-rideau orienté de manière appropriée pour permettre l'étalement du faisceau lumineux par réflexions successives entre le miroir et l'écran semi-transparent. En option, d'autres LED, 10' (au nombre de 2 dans l'exemple illustré) sont affectées à la fonction lanterne.In one embodiment (see Figure 2 ), the stop function with 3D effect is provided by a set of 2 LEDs 10 combined with a light guide or curtain guide oriented appropriately to allow the spread of the light beam by successive reflections between the mirror and the semi screen. -transparent. As an option, other LEDs, 10 '(two in number in the example illustrated) are assigned to the lantern function.

Dans une forme de réalisation alternative (voir Figure 3), la fonction stop ne présente pas elle-même d'effet 3D. La lumière émise par les LED 10 traverse une optique appropriée pour sa répartition en sous-faisceaux 11, qui traversent une épargne appropriée 8 du miroir 4 et une épargne appropriée 9 de l'écran semi-transparent 5.In an alternative embodiment (see Figure 3 ), the stop function itself does not have a 3D effect. The light emitted by the LEDs 10 passes through an optic suitable for its distribution in sub-beams 11, which pass through an appropriate spar 8 of the mirror 4 and an appropriate spar 9 of the semi-transparent screen 5.

Dans une forme de réalisation des éléments du module pour la fonction lanterne (voir Figure 4), au moins une LED 10 est apte à émettre une lumière empruntant un guide de lumière 2 combiné avec un miroir 4 en avant duquel est interposé un écran semi-transparent 5. Dans le cas où, comme cela est représenté sur la Figure 4, le guide de lumière n'est pas plan mais conique, elliptique, semi-elliptique, hyperbolique, spiral, spiral logarithmique, hélicoïdal, ou autre, les rayons lumineux réfléchis issus des réflexions successives convergent au point de vision de l'observateur. L'écran semi-transparent peut être muni ou non d'une ou plusieurs épargnes.In one embodiment of the elements of the module for the lantern function (see Figure 4 ), at least one LED 10 is able to emit a light borrowing a light guide 2 combined with a mirror 4 in front of which is interposed a semi-transparent screen 5. In the case where, as shown in the figure Figure 4 , the light guide is not plane but conical, elliptical, semi-elliptical, hyperbolic, spiral, spiral logarithmic, helical, or other, the reflected light rays from successive reflections converge at the point of view of the observer. The semi-transparent screen may or may not be provided with one or more savings.

Dans la vue schématique en élévation de la face éclairante d'un module non couvert par les revendications représentée sur la Figure 5, la visualisation d'une fonction lanterne avec effet 3D est représentée, tandis que dans la vue schématique en élévation de la face éclairante d'un module selon l'invention représentée sur la Figure 6, la visualisation d'une fonction stop sans effet 3D est représentée, avec la fonction lanterne éteinte.In the schematic elevational view of the illuminating face of a module not covered by the claims shown in Figure 5 , the visualization of a lantern function with 3D effect is shown, while in the schematic elevational view of the illuminating face of a module according to the invention shown in Figure 6 , the visualization of a stop function without 3D effect is shown, with the lantern function off.

Dans une forme de réalisation non représentée, la fonction stop peut être complétée ou remplacée par une fonction clignotant, avec une LED de couleur ambre et une électronique de commande adaptée.In an embodiment not shown, the stop function can be supplemented or replaced by a flashing function, with an amber LED and suitable control electronics.

Le dispositif selon l'invention peut comporter des caractéristiques optionnelles ou alternatives, qui peuvent être prises séparément ou en combinaison, telles que notamment:

  • Le boîtier comporte en outre une vitre transparente sur sa face frontale.
  • Les pièces optiques interposées sur le trajet des rayons lumineux entre la plaquette de circuits imprimés et le guide de lumière sont essentiellement composées de pièces optiques cristal transparent en PMMA (poly(méthacrylate de méthyle)) ou en PC (polycarbonate) munies d'éléments optiques de type prismes, recouverts ou non de surface grainées ou d'un matériau opalescent lui-même également en PMMA ou en PC, qui permettent de constituer la fonction stop, clignotant ou recul.
  • Les pièces optiques interposées sur le trajet des rayons lumineux entre le guide de lumière et le miroir, au droit des épargnes de celui-ci, sont essentiellement composées de pièces optiques cristal transparent en PMMA (poly(méthacrylate de méthyle)) ou en PC (polycarbonate) munies d'éléments optiques de type prismes, tandis que lesdits prismes sont des prismes collimateurs situés au droit de la LED et diffuseurs.
  • Des moyens pour une fonction stop sans effet 3D peuvent être prévus en complément ou à la place des moyens pour fonction stop avec effet 3D dans le dispositif selon l'invention, pour améliorer encore la sécurité au niveau des signaux stop.
  • Pour le guidage de la lumière émise par une LED, notamment pour la foction lanterne, on prévoit avantageusement un espace entre la platine du boîtier et le miroir, de telle sorte que le guide de lumière conduisant ces rayons lumineux puisse déboucher directement en périphérie de l'espace prévu entre ledit miroir et l'écran semi-transparent (voir les Figures 2 et 4 annexées).
  • Si l'on choisit de laisser les rayons émis par une ou plusieurs LED progresser sans effet 3D, il suffit alors de munir d'épargnes appropriées coordonnées, au droit de ces rayons, le miroir et l'écran semi-transparent.
  • On peut ajuster la focalisation des rayons lumineux émis par le dispositif en jouant simplement sur la géométrie du miroir, qui peut ainsi être plan, conique, elliptique, semi-elliptique, hyperbolique, spiral, spiral logarithmique, hélicoïdal, ou autre.
The device according to the invention can include optional or alternative characteristics, which can be taken separately or in combination, such as in particular:
  • The housing further comprises a transparent pane on its front face.
  • The optical parts interposed on the path of the light rays between the printed circuit board and the light guide are essentially composed of transparent crystal optical parts in PMMA (poly (methyl methacrylate)) or in PC (polycarbonate) equipped with optical elements of prism type, covered or not with a grained surface or with an opalescent material itself also in PMMA or PC, which make it possible to constitute the stop, flashing or reverse function.
  • The optical parts interposed on the path of the light rays between the light guide and the mirror, in line with the savings of the latter, are essentially composed of transparent crystal optical parts in PMMA (poly (methyl methacrylate)) or in PC ( polycarbonate) provided with optical elements of the prism type, while said prisms are collimator prisms located in line with the LED and diffusers.
  • Means for a stop function without a 3D effect can be provided in addition to or instead of the means for a stop function with a 3D effect in the device according to the invention, to further improve safety at the level of the stop signals.
  • For guiding the light emitted by an LED, in particular for the lantern function, a space is advantageously provided between the plate of the housing and the mirror, of such that the light guide conducting these light rays can open directly to the periphery of the space provided between said mirror and the semi-transparent screen (see Figures 2 and 4 appended).
  • If one chooses to let the rays emitted by one or more LEDs progress without a 3D effect, it is then sufficient to provide appropriate coordinated savings, in line with these rays, the mirror and the semi-transparent screen.
  • The focusing of the light rays emitted by the device can be adjusted by simply playing on the geometry of the mirror, which can thus be plane, conical, elliptical, semi-elliptical, hyperbolic, spiral, logarithmic spiral, helical, or other.

La présence d'épargnes aux endroits et dans les fonctionnalités où il en est fait mention procure une intensité lumineuse plus élevée, et confère plus de souplesse à l'ensemble en ce sens qu'elle permet de maintenir l'éclairage de la fonction concernée au-dessus de la norme le concernant, même en cas de panne d'une LED.The presence of savings in the places and in the functionalities where it is mentioned provides a higher light intensity, and confers more flexibility to the assembly in the sense that it makes it possible to maintain the lighting of the function concerned at above the standard concerning it, even in the event of an LED failure.

L'invention a également pour objet un feu pour véhicule automobile comportant un dispositif de feux arrière tel que décrit plus haut.The subject of the invention is also a light for a motor vehicle comprising a rear light device as described above.

Comme on le comprendra aisément, le module d'éclairage notamment pour feux arrière de véhicules automobiles se présente sous une forme compacte, et néanmoins procure des intensités et des répartitions d'éclairages fonctionnels satisfaisant aux normes et même substantiellement améliorés, tandis que l'ensemble du dispositif constitue un module amovible et remplaçable en cas de besoin, particulièrement pratique et compact.As will easily be understood, the lighting module, in particular for rear lights of motor vehicles, is in a compact form, and nevertheless provides intensities and functional lighting distributions satisfying the standards and even substantially improved, while the assembly of the device constitutes a removable and replaceable module if necessary, particularly practical and compact.

La réduction de taille d'un tel dispositif est seulement conditionnée par les besoins de refroidissement dus à la chaleur émise en service, sachant que l'électronique des plaquettes à circuits imprimés peut être au moins en partie détériorée par une surchauffe.The reduction in size of such a device is only conditioned by the cooling requirements due to the heat emitted in service, knowing that the electronics of printed circuit boards can be at least partly damaged by overheating.

Claims (9)

  1. A rear light device for motor vehicles, adapted to provide a 3D effect, including several LED light sources, said device being composed of a module comprising, from the rear to the front, in the direction of the substantially parallel light beams emitted by said LEDs:
    - a printed circuit board (1), shortened as PCB, including at least three LEDs, made operational by suitable printed circuits and an external power supply,
    - a light guide (2),
    - optical parts (3, 3') suitable for guiding and/or distributing at convenience the beams of one or several of said LEDs (10),
    - a mirror (4), with or without resist areas (8),
    - at least one semi-transparent screen (5),
    characterized in that the device comprises at least two LEDs (10') associated with means intended to ensure the sidelight light guide function, and two additional red LEDs (10) for the stop function and/or two additional orange LEDs (10) for the turn-signal function and/or two additional white LEDs (10) for the reversing function, and in that the mirror (4) includes at least one resist area (8) located opposite at least one additional LED (10) for the stop function and/or for the turn-signal function or for the reversing function, and in that the semi-transparent screen (5) includes a resist area (9) opposite each of the light beams coming from the additional LEDs (10) or opposite some of them, and in that the function of one or several additional LEDs (10) has itself no 3D effect, the light emitted by this or these allocated additional LEDs (10) passing through a suitable optical system for its splitting into sub-beams (11), which pass through a suitable resist area (8) of the mirror (4) and a suitable resist area (9) of the semi-transparent screen (5).
  2. The device according to claim 1, characterized in that it is in modular form and comprises only LEDs as light sources.
  3. The device according to claim 1 or 2, characterized in that it includes, apart from assembly and/or joining elements, as well as conventional wires and connections, at least one printed circuit board (1), at least one light guide (2), at least two optical light-concentration parts for the stop function (3) and at least two optical light-diffusion parts for the stop function (3'), a mirror (4), a semi-transparent screen (5), and an assembly casing (6).
  4. The device according to one of claims 1 to 3, characterized in that the mirror is planar, conical, elliptical, semi-elliptical, hyperbolic, spiral, logarithmic spiral, helical or other.
  5. The device according to one of claims 1 to 4, characterized in that the stop function is completed by a turn-signal function, with an amber LED and suitable control electronics.
  6. The device according to one of claims 1 to 5, characterized in that the optical parts interposed on the path of the light rays between the printed circuit board and the light guide are essentially composed of transparent crystal optical parts made of PMMA or PC, provided with optical elements of prism type, covered or not with grained surfaces or a material itself opalescent, also made of PMMA or PC, which make it possible to provide the stop, turn-signal or reversing function.
  7. The device according to one of claims 1 to 6, characterized in that the optical parts interposed on the path of the light rays between the light guide and the mirror, in alignment with the resist areas of the latter, are essentially composed of transparent crystal optical parts made of PMMA or PC, provided with optical elements of prism type, whereas said prisms are collimating prisms located in alignment with the LED and diffusers.
  8. The device according to one of claims 1 to 7, characterized in that a space is provided between the plate of the casing (6) and the mirror (4), so that the light guide guiding the light rays can lead directly to the periphery of the space provided between said mirror (4) and the semi-transparent screen (5).
  9. A light for motor vehicle, characterized in that it includes a rear light device according to any one of claims 1 to 8.
EP13701483.3A 2012-02-03 2013-01-30 Led lighting module for the rear lights of a motor vehicle Active EP2809984B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13701483T PL2809984T4 (en) 2012-02-03 2013-01-30 Led lighting module for the rear lights of a motor vehicle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1200271A FR2986604B1 (en) 2012-02-03 2012-02-03 LED LIGHT MODULE FOR REAR LIGHTS OF MOTOR VEHICLE
PCT/EP2013/051742 WO2013113728A1 (en) 2012-02-03 2013-01-30 Led lighting module for the rear lights of a motor vehicle

Publications (2)

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EP2809984A1 EP2809984A1 (en) 2014-12-10
EP2809984B1 true EP2809984B1 (en) 2020-11-25

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EP (1) EP2809984B1 (en)
ES (1) ES2860936T3 (en)
FR (1) FR2986604B1 (en)
PL (1) PL2809984T4 (en)
WO (1) WO2013113728A1 (en)

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FR3035183B1 (en) * 2015-04-17 2018-10-12 Valeo Vision DEVICE FOR LIGHTING OR LIGHT SIGNALING WITH DEPTH EFFECT
FR3054022B1 (en) * 2016-07-18 2020-03-20 Valeo Vision Belgique LIGHT MODULE FOR MOTOR VEHICLE
CZ2016745A3 (en) 2016-11-29 2018-06-06 Varroc Lighting Systems, s.r.o. A signal lamp for motor vehicles
FR3078140B1 (en) * 2018-02-19 2020-09-11 Automotive Lighting Rear Lamps France ATTRACTIVE SAFETY SIGNALING DEVICE FOR A MOTOR VEHICLE
EP3616988B1 (en) 2018-08-27 2023-05-31 Motherson Innovations Company Limited Illumination device for a passenger and/or goods transport means, cladding component for a passenger and/or goods transport agents with such an illumination device, and a passenger and/or goods transport means with such a cladding component
FR3099810A1 (en) 2019-08-07 2021-02-12 Psa Automobiles Sa Optical element for luminous device with several photometric functions and anti-light leak wall.
GB2612065A (en) * 2021-10-20 2023-04-26 Jaguar Land Rover Ltd Optical assembly

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US8985814B2 (en) * 2007-12-13 2015-03-24 Valeo North America, Inc. Dynamic three dimensional effect lamp assembly
FR2953781B1 (en) 2009-12-11 2016-02-26 Automotive Lighting Rear Lamps France DEVICE FOR MOTOR VEHICLE SIGNALING LIGHT
FR2954457B1 (en) * 2009-12-21 2014-08-22 Valeo Vision SIGNALING DEVICE FOR VEHICLE WITH 3D OPTICAL EFFECT
FR2957652B1 (en) * 2010-03-19 2013-05-31 Automotive Lighting Rear Lamps France DEVICE FOR OBTAINING AN INFINITE EFFECT OF A MOTOR VEHICLE SIGNALING FIRE
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Also Published As

Publication number Publication date
WO2013113728A1 (en) 2013-08-08
PL2809984T3 (en) 2021-08-23
EP2809984A1 (en) 2014-12-10
FR2986604B1 (en) 2015-07-31
FR2986604A1 (en) 2013-08-09
ES2860936T3 (en) 2021-10-05
PL2809984T4 (en) 2021-08-23

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