WO2015193575A1 - Lighting and/or signalling device generating uniform light on a screen - Google Patents
Lighting and/or signalling device generating uniform light on a screen Download PDFInfo
- Publication number
- WO2015193575A1 WO2015193575A1 PCT/FR2015/051436 FR2015051436W WO2015193575A1 WO 2015193575 A1 WO2015193575 A1 WO 2015193575A1 FR 2015051436 W FR2015051436 W FR 2015051436W WO 2015193575 A1 WO2015193575 A1 WO 2015193575A1
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- Prior art keywords
- reflector
- light
- lighting
- screen
- light sources
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Classifications
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- 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]
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- 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
- F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
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- 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
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- 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
- F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
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- 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
- F21S43/50—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
Definitions
- the invention relates to lighting and / or signaling devices, and more particularly relates to the so-called "lantern" function providing the rear signaling of vehicles, especially motor vehicles.
- This type of function must of course fulfill the regulatory requirements regarding luminous intensity, photometry, colorimetry and distribution of the luminous flux in the visibility space and in particular in the rear space of the vehicle as regards signaling rear lamps. ensuring the "lantern" function.
- Another requirement which is not regulatory but which becomes unavoidable, is that of the aesthetics of the lighting and / or signaling functions.
- the components generating the light beams, their associated optics and their renderings for an outside observer participate in the visual signature of a vehicle model and / or its mark and may be elements that fall within the selection criteria at the time of the inspection. act of purchase of a vehicle.
- light and / or signaling device is understood here to mean a device or equipment comprising a reflector, arranged in such a way as to send light rays coming from a bulb-type light source to a given direction. a plurality of light sources such as light emitting diodes (or LEDs).
- FIG. 1 illustrates a left front optical block 1 of a vehicle automobile in which is implanted a signaling device 2 of the state of the art.
- This optical unit 1 and its lighting device 2 are described in the document FR2960639.
- the signaling function is performed from a bar 3 shaped to present faces 4 of generally parabolic, adjacent, defining as many reflectors 5 than faces 4.
- the parabolic faces 4 of the reflectors 5 are respectively connected to each other by optically neutral junction elements 6.
- An electronic circuit 7 in the form of a printed circuit board (PCB), supports a plurality of LEDs 8 arranged so that their active surfaces 9 respectively face the center of each parabola 4 to create a plurality of oriented light beams 10 towards a screen not shown, able to diffuse light received on the entire surface of the screen.
- the junction elements 6 do not receive a light beam generated by the LEDs 8.
- junction elements 6 reveal, for an observer located at the front of the vehicle, and facing the screen, as many dark areas as junctions 6. This results in a degradation of the homogeneity of the lighting function and / or signaling and therefore rendering these functions, which creates an unsightly effect, and detracts from the overall impression of quality.
- the invention therefore aims to propose an alternative solution that improves the situation.
- a lighting and / or signaling device comprising a plurality of adjacent light sources capable of emitting light rays, a reflector arranged facing the plurality of light sources and able to reflect the light rays emitted by the plurality of light sources and a screen adapted to receive and diffuse the light rays reflected by the reflector, characterized in that said reflector is shaped to have a single concave reflecting surface, extending opposite the plurality of light sources. light and whose dimensions are adapted to illuminate at least one predefined pattern on the screen.
- the reflective face of the reflector comprises a variable radius curvature.
- the radius of curvature follows a parabolic profile.
- the reflecting face defines a reflecting sheet of white color.
- the reflective ply is obtained by profiling.
- the reflector is obtained after molding of an insert on, or integral with, the housing; the reflecting face being a layer of light reflective material attached to the concave portion of the reflector or tinted in the mass.
- the reflecting face is white.
- the screen is sandblasted or grained or opaline to define light patterns of determined shapes on the screen.
- the light sources are LEDs supported by the same printed circuit board (38) extending along the large dimension of the reflector.
- the invention has another object, a vehicle rear light, characterized in that it comprises at least one lighting and / or signaling device as described above.
- FIG. 1 already described, illustrates in a perspective view, a part of an optical unit equipped with a lighting device according to the state of the art
- FIG. 2 already described, schematically illustrates a detail view of the lighting device of FIG. 1;
- FIG. 3 illustrates in a perspective view a rear light of a motor vehicle equipped with a lighting device according to the invention
- - Figure 4 schematically illustrates the rear light of Figure 3 in a cross-sectional view along the cutting axes IV-IV of Figure 3;
- FIG. 5 illustrates, in a perspective view, a profiled reflector of a lighting device according to the invention.
- the invention aims to provide a lighting device whose screen provides a uniform illumination.
- the lighting device is intended for the lighting function of "lantern” type and is part of a vehicle rear light, possibly of the automotive type .
- the lighting device can be DRL type ("Daytime running Light (Gold Lamp)") to be automatically put into operation (or on) when the vehicle that team begins to advance.
- DRL type Daytime running Light (Gold Lamp)
- Other applications outside the automotive field are also possible
- FIG. 3 illustrates, in a perspective view, a left rear light 100 of a motor vehicle equipped with a lighting device 20 according to the invention, which is intended to perform the "lantern" function.
- FIG. 4 schematically illustrates the rear light of FIG. 3 in a cross-sectional view along the cutting axes IV-IV of FIG. 3.
- the rear light 100 comprises a housing 30 sealingly enclosing several lighting and / or signaling functions.
- the two chambers 31 and 32 are separated by a horizontal partition wall 33 partially closing the chambers 31 and 32 to leave a central passage 34 between the two chambers 31 and 32.
- the two chambers 31 and 32 are sealed by a common ice 35 or by two separate windows specific to each chamber 31 or 32.
- the rear face 36 of the upper half 31 of the housing 30 supports a light source 37 of the bulb type to achieve, for example, the function "stop light".
- the first chamber 31 channels the light emitted by the source towards the outside of the light 100 protected by the ice 35.
- the partition wall 33 of the first and second chambers 31 and 32 supports, in the vicinity of the rear face 36 of the housing 30, a printed circuit board 38 in the form of a bar, itself supporting a plurality of LEDs 39.
- the bar 38 extends in the plane of the partition 33, perpendicularly to the window 35 and is arranged to present the active surfaces 40 of the LEDs 39 facing the lower face 41 of the housing 30.
- LED lighting is dedicated to the "lantern" function.
- a single reflector 50 is disposed and fixed inside the second chamber 32 and extends in a direction parallel to the bar 38 between the bar 38 and the lower face 41 of the housing 30.
- the reflector 50 is arranged to return all the light rays, emitted by the LEDs 39 in a first generally vertical direction, towards the lens 35 in a second horizontal general direction.
- the reflector 50 is in the form of a sheet obtained for example by profiling a plastic material such as ABS. -PC whose face 51, intended to be opposite the active surfaces 40 of the LEDs 39, is covered with a light reflecting layer or tinted in the mass of the reflector 50.
- the color of the reflecting face 51 is preferably selected "White”: color that "bursts” the light reflected on the face 51 and reinforces the homogenous appearance of the lighting of a screen in comparison with a reflecting surface of "aluminum” color that can favor "hot spots” otherwise says more reflective areas than others.
- the dimensions and the shape of the reflecting face 51 which in the embodiment can be confused with the sheet 50 itself, are determined so as to obtain the lantern function with a specific visual effect for an observer located at the rear of the vehicle and therefore in front of the taillight 100.
- the lantern function is restored by a convex screen 60 arranged and fixed in the second chamber 32 of the housing 30.
- the lower portion of the convex shield 60 rests on the lower peripheral edge of the housing 30 and its side edges conform to the side edges of the housing 30.
- the upper part of the screen 60 stops inside the housing substantially in the center of the second chamber 32 and below the horizontal partition wall 33 so as to leave a passage between the partition 33 and the screen 60 .
- the screen 60 defines light patterns in the general shape of two concentric half-rings 61 and 62: a luminous half-ring 61 and an outer luminous half-ring 62.
- the two patterns 61 and 62 are made on the screen 60 by known techniques of sanding, graining or use of an opaline material or any other method or material capable of diffusing a beam bright uniformly over the entire surface of patterns 61 and 62.
- the two half-rings 61 and 62 are separated by an area 63 opaque to the light advantageously highlighting the patterns 61 and 62 when they are illuminated.
- the dimensions and the shape of the reflective surface 51 of the reflector 50 - length L (along Y), width l (along X), height H (along Z) and radius of curvature R - are adapted to receive, on the one hand, all the light rays emitted by the plurality of LEDs 39 and, secondly, to return said rays to the patterns 61 and 62 of the screen 60 with the minimum loss of luminous flux.
- the reflective layer 50 has a radius of curvature R progressively increasing from its upper part to its characteristic lower part of a parabolic form.
- the reflector 50 may constitute an integral part (material coming by molding) of the casing 30 or it may be an attached molded part which is housed in the casing 30.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
Description
DISPOSITIF D'ÉCLAIRAGE ET/OU DE SIGNALISATION GENERANT UNE LUMIERE HOMOGENE SUR UN ECRAN ILLUMINATING AND / OR SIGNALING DEVICE GENERATING A HOMOGENEOUS LIGHT ON A SCREEN
L'invention concerne les dispositifs d'éclairage et/ou de signalisation, et concerne plus particulièrement la fonction dite « lanterne » assurant la signalisation arrière des véhicules et notamment des véhicules automobiles. The invention relates to lighting and / or signaling devices, and more particularly relates to the so-called "lantern" function providing the rear signaling of vehicles, especially motor vehicles.
Elle concerne également un feu arrière de véhicule comportant un tel dispositif. It also relates to a vehicle rear lamp comprising such a device.
Ce type de fonction doit bien entendu remplir les exigences réglementaires en matière d'intensité lumineuse, photométrie, colorimétrie et de répartition du flux lumineux dans l'espace de visibilité et notamment dans l'espace arrière du véhicule s'agissant de feux arrière de signalisation assurant la fonction « lanterne ». This type of function must of course fulfill the regulatory requirements regarding luminous intensity, photometry, colorimetry and distribution of the luminous flux in the visibility space and in particular in the rear space of the vehicle as regards signaling rear lamps. ensuring the "lantern" function.
Une autre exigence qui n'est pas réglementaire mais qui devient incontournable, est celle de l'esthétisme des fonctions d'éclairage et/ou de signalisation. Another requirement which is not regulatory but which becomes unavoidable, is that of the aesthetics of the lighting and / or signaling functions.
Les organes générant les faisceaux lumineux, leurs optiques associées et leurs rendus pour un observateur extérieur, participent à la signature visuelle d'un modèle de véhicule et/ou de sa marque et peuvent être des éléments entrant dans les critères de choix au moment de l'acte d'achat d'un véhicule. The components generating the light beams, their associated optics and their renderings for an outside observer, participate in the visual signature of a vehicle model and / or its mark and may be elements that fall within the selection criteria at the time of the inspection. act of purchase of a vehicle.
On entend ici par "dispositif d'éclairage et/ou de signalisation" un dispositif ou équipement comportant un réflecteur, agencé de manière à renvoyer vers une direction déterminée des rayons lumineux qui sont issus d'une source de lumière de type ampoule ou d'une pluralité de sources de lumières telles que des diodes électroluminescentes (ou LEDs). The term "lighting and / or signaling device" is understood here to mean a device or equipment comprising a reflector, arranged in such a way as to send light rays coming from a bulb-type light source to a given direction. a plurality of light sources such as light emitting diodes (or LEDs).
Un défaut généralement constaté, concernant notamment les fonctions de signalisation, et en particulier la fonction « lanterne », réside dans le fait qu'elle n'offre pas un éclairement homogène sur toute la surface de visibilité du feu. A defect generally noted, particularly concerning the signaling functions, and in particular the "lantern" function, lies in the fact that it does not provide uniform illumination over the entire fire visibility surface.
La figure 1 illustre un bloc optique avant gauche 1 d'un véhicule automobile dans lequel est implanté un dispositif de signalisation 2 de l'état de la technique. FIG. 1 illustrates a left front optical block 1 of a vehicle automobile in which is implanted a signaling device 2 of the state of the art.
Ce bloc optique 1 et son dispositif d'éclairage 2 sont décrits dans le document FR2960639. This optical unit 1 and its lighting device 2 are described in the document FR2960639.
En référence à la figure 2 qui détaille le dispositif d'éclairage 2 de l'état de la technique, la fonction de signalisation est réalisée à partir d'une barrette 3 conformée pour présenter des faces 4 de forme générale parabolique, adjacentes, définissant autant de réflecteurs 5 que de faces 4. Referring to Figure 2 which details the lighting device 2 of the state of the art, the signaling function is performed from a bar 3 shaped to present faces 4 of generally parabolic, adjacent, defining as many reflectors 5 than faces 4.
Les faces paraboliques 4 des réflecteurs 5 sont respectivement reliées les unes aux autre par des éléments de jonction optiquement neutre 6. The parabolic faces 4 of the reflectors 5 are respectively connected to each other by optically neutral junction elements 6.
Un circuit électronique 7 en forme de plaquette de circuit imprimé (PCB), supporte une pluralité de LEDs 8 disposées de manière à ce que leurs surfaces actives 9 viennent respectivement en regard du centre de chaque parabole 4 pour créer une pluralité de faisceaux lumineux 10 orientés en direction d'un écran non représenté, apte à diffuser la lumière reçue sur toute la surface de l'écran. Les éléments de jonction 6, ne reçoivent pas de rayon lumineux généré par les LEDs 8. An electronic circuit 7 in the form of a printed circuit board (PCB), supports a plurality of LEDs 8 arranged so that their active surfaces 9 respectively face the center of each parabola 4 to create a plurality of oriented light beams 10 towards a screen not shown, able to diffuse light received on the entire surface of the screen. The junction elements 6 do not receive a light beam generated by the LEDs 8.
Ces éléments de jonction 6 révèlent, pour un observateur situé à l'avant du véhicule, et face à l'écran, autant de zones sombres que de jonctions 6. Il en résulte une dégradation de l'homogénéité de la fonction d'éclairage et/ou de signalisation et donc du rendu de ces fonctions, ce qui crée un effet inesthétique, et nuit à l'impression générale de qualité. These junction elements 6 reveal, for an observer located at the front of the vehicle, and facing the screen, as many dark areas as junctions 6. This results in a degradation of the homogeneity of the lighting function and / or signaling and therefore rendering these functions, which creates an unsightly effect, and detracts from the overall impression of quality.
L'invention a donc pour but de proposer une solution alternative qui permet d'améliorer la situation. The invention therefore aims to propose an alternative solution that improves the situation.
Elle propose à cet effet un dispositif d'éclairage et/ou de signalisation comprenant une pluralité de sources de lumière adjacentes aptes à émettre des rayons lumineux, un réflecteur agencé en regard de la pluralité de sources de lumière et apte à réfléchir les rayons lumineux émis par la pluralité de sources de lumière et un écran apte à recevoir et diffuser les rayons lumineux réfléchis par le réflecteur, caractérisé en ce que ledit réflecteur est conformé pour présenter une face réfléchissante unique concave, s'étendant en regard de la pluralité de sources de lumière et dont les dimensions sont adaptées pour éclairer au moins un motif prédéfini sur l'écran. Selon une caractéristique, la face réfléchissante du réflecteur comporte une courbure à rayon variable. It proposes for this purpose a lighting and / or signaling device comprising a plurality of adjacent light sources capable of emitting light rays, a reflector arranged facing the plurality of light sources and able to reflect the light rays emitted by the plurality of light sources and a screen adapted to receive and diffuse the light rays reflected by the reflector, characterized in that said reflector is shaped to have a single concave reflecting surface, extending opposite the plurality of light sources. light and whose dimensions are adapted to illuminate at least one predefined pattern on the screen. According to one characteristic, the reflective face of the reflector comprises a variable radius curvature.
Selon une autre caractéristique, le rayon de courbure suit un profil parabolique. According to another characteristic, the radius of curvature follows a parabolic profile.
Selon une autre caractéristique, la face réfléchissante définit une nappe réfléchissante de couleur blanche. According to another characteristic, the reflecting face defines a reflecting sheet of white color.
Selon une caractéristique la nappe réfléchissante est obtenue par profilage. According to one characteristic, the reflective ply is obtained by profiling.
Selon une autre caractéristique, le réflecteur est obtenu après moulage d'une pièce rapportée sur, ou venue de matière avec, le boîtier ; la face réfléchissante étant une couche de matériau réfléchissant la lumière rapportée sur la partie concave du réflecteur ou teintée dans la masse. According to another characteristic, the reflector is obtained after molding of an insert on, or integral with, the housing; the reflecting face being a layer of light reflective material attached to the concave portion of the reflector or tinted in the mass.
Selon une caractéristique, la face réfléchissante est de couleur blanche. According to one characteristic, the reflecting face is white.
Selon une autre caractéristique, l'écran est sablé ou grainé ou opalin pour définir des motifs lumineux de formes déterminées sur l'écran. According to another characteristic, the screen is sandblasted or grained or opaline to define light patterns of determined shapes on the screen.
Selon une autre caractéristique, les sources de lumière sont des LEDs supportées par une même plaque de circuit imprimé (38) s'étendant suivant la grande dimension du réflecteur. According to another characteristic, the light sources are LEDs supported by the same printed circuit board (38) extending along the large dimension of the reflector.
L'invention a pour autre objet, un feu arrière de véhicule, caractérisé en ce qu'il comprend au moins un dispositif d'éclairage et/ou de signalisation tel que décrit ci-dessus. The invention has another object, a vehicle rear light, characterized in that it comprises at least one lighting and / or signaling device as described above.
D'autres caractéristiques et avantages de l'invention apparaîtront à l'examen de la description détaillée ci-après, et des dessins annexés sur lesquels : Other features and advantages of the invention will appear on examining the detailed description below, and the attached drawings in which:
- la figure 1 , déjà décrite, illustre dans une vue en perspective, une partie d'un bloc optique équipé d'un dispositif d'éclairage selon l'état de la technique, FIG. 1, already described, illustrates in a perspective view, a part of an optical unit equipped with a lighting device according to the state of the art,
- la figure 2, déjà décrite, illustre schématiquement, une vue de détail du dispositif d'éclairage de la figure 1 ; FIG. 2, already described, schematically illustrates a detail view of the lighting device of FIG. 1;
- la figure 3, illustre dans une vue en perspective, un feu arrière d'un véhicule automobile équipé d'un dispositif d'éclairage selon l'invention, - la figure 4 illustre schématiquement le feu arrière de la figure 3 selon une vue en coupe transversale, selon les axes de coupe IV-IV de la figure 3 ; etFIG. 3 illustrates in a perspective view a rear light of a motor vehicle equipped with a lighting device according to the invention, - Figure 4 schematically illustrates the rear light of Figure 3 in a cross-sectional view along the cutting axes IV-IV of Figure 3; and
- la figure 5 illustre, dans une vue en perspective, un réflecteur profilé d'un dispositif d'éclairage selon l'invention. - Figure 5 illustrates, in a perspective view, a profiled reflector of a lighting device according to the invention.
L'invention a pour but d'offrir un dispositif d'éclairage dont l'écran offre un éclairement homogène. The invention aims to provide a lighting device whose screen provides a uniform illumination.
Dans ce qui suit, on considère, à titre d'exemple non limitatif, que le dispositif d'éclairage est destiné à la fonction d'éclairage de type « lanterne » et fait partie d'un feu arrière de véhicule, éventuellement de type automobile. Mais, l'invention n'est pas limitée à cette application. Le dispositif d'éclairage peut être de type DRL ("Daytime running Light (or Lamp)") destiné à être automatiquement mis en fonctionnement (ou allumé) lorsque le véhicule qu'il équipe se met à avancer. D'autres applications hors du domaine automobile sont également possibles In what follows, it is considered, by way of non-limiting example, that the lighting device is intended for the lighting function of "lantern" type and is part of a vehicle rear light, possibly of the automotive type . But, the invention is not limited to this application. The lighting device can be DRL type ("Daytime running Light (Gold Lamp)") to be automatically put into operation (or on) when the vehicle that team begins to advance. Other applications outside the automotive field are also possible
La figure 3, illustre dans une vue en perspective, un feu arrière gauche 100 d'un véhicule automobile équipé d'un dispositif d'éclairage 20 selon l'invention, qui est destiné à assurer la fonction « lanterne ». FIG. 3 illustrates, in a perspective view, a left rear light 100 of a motor vehicle equipped with a lighting device 20 according to the invention, which is intended to perform the "lantern" function.
La figure 4 illustre schématiquement le feu arrière de la figure 3 selon une vue en coupe transversale, selon les axes de coupe IV-IV de la figure 3. FIG. 4 schematically illustrates the rear light of FIG. 3 in a cross-sectional view along the cutting axes IV-IV of FIG. 3.
Le feu arrière 100 comporte un boîtier 30 renfermant de manière étanche plusieurs fonctions d'éclairage et/ou de signalisation. The rear light 100 comprises a housing 30 sealingly enclosing several lighting and / or signaling functions.
La moitié supérieure 31 du boîtier 30, définissant une première chambre ouverte vers l'extérieur du feu 100, loge une ou plusieurs fonctions d'éclairage et/ou de signalisation telles que les fonctions feu de recul, feu stop, feu clignotant. The upper half 31 of the housing 30, defining a first chamber open towards the outside of the light 100, houses one or more lighting and / or signaling functions such as the reversing light functions, brake light, flashing light.
La moitié inférieure 32 du boîtier 30, définissant une deuxième chambre ouverte vers l'extérieur du feu 100, loge le dispositif d'éclairage 20 selon l'invention. The lower half 32 of the housing 30, defining a second chamber open towards the outside of the fire 100, houses the lighting device 20 according to the invention.
Les deux chambres 31 et 32 sont séparées par une cloison de séparation horizontale 33 fermant partiellement les chambres 31 et 32 pour laisser un passage central 34 entre les deux chambres 31 et 32. The two chambers 31 and 32 are separated by a horizontal partition wall 33 partially closing the chambers 31 and 32 to leave a central passage 34 between the two chambers 31 and 32.
Les deux chambres 31 et 32 sont fermées de manière étanche par une glace commune 35 ou par deux glaces distinctes propres à chaque chambre 31 ou 32. The two chambers 31 and 32 are sealed by a common ice 35 or by two separate windows specific to each chamber 31 or 32.
La face arrière 36 de la moitié supérieure 31 du boitier 30 supporte une source de lumière 37 de type à ampoule pour réaliser, par exemple, la fonction « feu stop ». La première chambre 31 canalise la lumière émise par la source vers l'extérieur du feu 100 protégée par la glace 35. The rear face 36 of the upper half 31 of the housing 30 supports a light source 37 of the bulb type to achieve, for example, the function "stop light". The first chamber 31 channels the light emitted by the source towards the outside of the light 100 protected by the ice 35.
La cloison de séparation 33 des première et deuxième chambres 31 et 32 supporte, au voisinage de la face arrière 36 du boitier 30, un circuit imprimé 38 en forme de barrette, supportant lui-même une pluralité de LEDs 39. The partition wall 33 of the first and second chambers 31 and 32 supports, in the vicinity of the rear face 36 of the housing 30, a printed circuit board 38 in the form of a bar, itself supporting a plurality of LEDs 39.
La barrette 38 s'étend dans le plan de la cloison 33, perpendiculairement à la glace 35 et elle est agencée de manière à présenter les surfaces actives 40 des LEDs 39 en regard de la face inférieure 41 du boitier 30. The bar 38 extends in the plane of the partition 33, perpendicularly to the window 35 and is arranged to present the active surfaces 40 of the LEDs 39 facing the lower face 41 of the housing 30.
L'éclairage à LEDs est dédié à la fonction « lanterne ». LED lighting is dedicated to the "lantern" function.
Un réflecteur unique 50, de forme générale concave, est disposé et fixé à l'intérieur de la deuxième chambre 32 et s'étend selon une direction parallèle à la barrette 38 entre la barrette 38 et la face inférieure 41 du boitier 30. A single reflector 50, of generally concave shape, is disposed and fixed inside the second chamber 32 and extends in a direction parallel to the bar 38 between the bar 38 and the lower face 41 of the housing 30.
Le réflecteur 50 est agencé de manière à renvoyer l'ensemble des rayons lumineux, émis par les LEDs 39 selon une première direction générale verticale, vers la glace 35 selon une deuxième direction générale horizontale. The reflector 50 is arranged to return all the light rays, emitted by the LEDs 39 in a first generally vertical direction, towards the lens 35 in a second horizontal general direction.
Dans un mode de réalisation d'un réflecteur 50 selon l'invention, en référence à la figure 5, le réflecteur 50 se présente sous la forme d'une nappe obtenue par exemple, par profilage d'un matériau plastique tel que l'ABS-PC dont la face 51 , destinée à être en regard des surfaces actives 40 des LEDs 39, est recouverte d'une couche réfléchissant la lumière ou bien teintée dans la masse du réflecteur 50. La couleur de la face réfléchissante 51 est choisie de préférence « blanche » : couleur qui « éclate » la lumière réfléchie sur la face 51 et renforce l'aspect homogène de l'éclairage d'un écran en comparaison avec une surface réfléchissante de couleur « alu » qui peut favoriser des « points chauds » autrement dit des zones plus réfléchissantes que d'autres. Les dimensions et la forme de la face réfléchissante 51 qui dans le mode de réalisation peut être confondue avec la nappe 50 elle-même, sont déterminées de manière à obtenir la fonction lanterne avec un effet visuel spécifique pour un observateur située à l'arrière du véhicule et donc devant le feu arrière 100. In one embodiment of a reflector 50 according to the invention, with reference to FIG. 5, the reflector 50 is in the form of a sheet obtained for example by profiling a plastic material such as ABS. -PC whose face 51, intended to be opposite the active surfaces 40 of the LEDs 39, is covered with a light reflecting layer or tinted in the mass of the reflector 50. The color of the reflecting face 51 is preferably selected "White": color that "bursts" the light reflected on the face 51 and reinforces the homogenous appearance of the lighting of a screen in comparison with a reflecting surface of "aluminum" color that can favor "hot spots" otherwise says more reflective areas than others. The dimensions and the shape of the reflecting face 51 which in the embodiment can be confused with the sheet 50 itself, are determined so as to obtain the lantern function with a specific visual effect for an observer located at the rear of the vehicle and therefore in front of the taillight 100.
La fonction lanterne est restituée par un écran 60 convexe disposé et fixé dans la deuxième chambre 32 du boîtier 30. The lantern function is restored by a convex screen 60 arranged and fixed in the second chamber 32 of the housing 30.
La partie inférieure de l'écran convexe 60 repose sur le bord périphérique inférieur du boîtier 30 et ses bords latéraux épousent les bords latéraux du boîtier 30. The lower portion of the convex shield 60 rests on the lower peripheral edge of the housing 30 and its side edges conform to the side edges of the housing 30.
La partie supérieure de l'écran 60 s'arrête à l'intérieur du boîtier sensiblement au centre de la deuxième chambre 32 et en dessous de la cloison de séparation horizontale 33 de manière à laisser un passage entre la cloison 33 et l'écran 60. The upper part of the screen 60 stops inside the housing substantially in the center of the second chamber 32 and below the horizontal partition wall 33 so as to leave a passage between the partition 33 and the screen 60 .
Dans le mode de réalisation illustré aux figures 3 et 4, et de façon plus visible à la figure 3, l'écran 60 définit des motifs lumineux prenant la forme générale de deux demi-anneaux, concentriques 61 et 62 : un demi- anneau lumineux intérieur 61 et un demi-anneau lumineux extérieur 62. Les deux motifs 61 et 62 sont réalisés sur l'écran 60 par des techniques connues de sablage, grainage ou utilisation d'un matériau opalin ou tout autre procédé ou matériau aptes à diffuser un faisceau lumineux de façon homogène sur toute la surface des motifs 61 et 62. In the embodiment illustrated in FIGS. 3 and 4, and more clearly in FIG. 3, the screen 60 defines light patterns in the general shape of two concentric half-rings 61 and 62: a luminous half-ring 61 and an outer luminous half-ring 62. The two patterns 61 and 62 are made on the screen 60 by known techniques of sanding, graining or use of an opaline material or any other method or material capable of diffusing a beam bright uniformly over the entire surface of patterns 61 and 62.
Les deux demi-anneaux 61 et 62 sont séparés par une zone 63 opaque à la lumière faisant ressortir avantageusement les motifs 61 et 62 quand ils sont éclairés. The two half-rings 61 and 62 are separated by an area 63 opaque to the light advantageously highlighting the patterns 61 and 62 when they are illuminated.
Ces motifs définissent une signature lumineuse particulière pour la partie arrière du véhicule donnant un effet de profondeur ou 3D de la fonction « lanterne ». These patterns define a particular light signature for the rear part of the vehicle giving a depth or 3D effect of the "lantern" function.
Tel qu'illustré à la figure 5, les dimensions et la forme de la surface réfléchissante 51 du réflecteur 50 - longueur L (suivant Y), largeur l (suivant X), hauteur H (suivant Z) et rayon de courbure R - sont adaptées de manière à recevoir d'une part, l'ensemble des rayons lumineux émis par la pluralité de LEDs 39 et, d'autre part, pout renvoyer lesdits rayons vers les motifs 61 et 62 de l'écran 60 avec le minimum de perte de flux lumineux. As illustrated in FIG. 5, the dimensions and the shape of the reflective surface 51 of the reflector 50 - length L (along Y), width l (along X), height H (along Z) and radius of curvature R - are adapted to receive, on the one hand, all the light rays emitted by the plurality of LEDs 39 and, secondly, to return said rays to the patterns 61 and 62 of the screen 60 with the minimum loss of luminous flux.
Dans le mode de réalisation illustré à la figure 4, la nappe réflecteur 50 comporte un rayon de courbure R augmentant progressivement de sa 5 partie supérieure vers sa partie inférieure caractéristique d'une forme parabolique. In the embodiment illustrated in FIG. 4, the reflective layer 50 has a radius of curvature R progressively increasing from its upper part to its characteristic lower part of a parabolic form.
Une cloison verticale 70 venue de matière avec la cloison de séparation horizontale 33, ou rapportée sur cette dernière, est agencée dans la deuxième chambre 32 de manière à canaliser les rayons lumineux émis par î o les LEDs 39 vers le centre de la surface parabolique de la nappe réflecteur 50. A vertical partition 70 integral with the horizontal partition wall 33, or attached thereto, is arranged in the second chamber 32 so as to channel the light rays emitted by the LEDs 39 towards the center of the parabolic surface of the the reflective layer 50.
On notera également que le réflecteur 50 peut constituer une partie intégrante (venue de matière par moulage) du boîtier 30 ou bien il peut s'agir d'une pièce moulée rapportée qui est logée dans le boîtier 30. It will also be noted that the reflector 50 may constitute an integral part (material coming by molding) of the casing 30 or it may be an attached molded part which is housed in the casing 30.
15 15
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP15732826.1A EP3158258B1 (en) | 2014-06-19 | 2015-06-01 | Lighting and/or signalling device generating uniform light on a screen |
| CN201580032827.3A CN106662303B (en) | 2014-06-19 | 2015-06-01 | Lighting and/or signalling device for generating uniform light on a screen |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1455627A FR3022608B1 (en) | 2014-06-19 | 2014-06-19 | LIGHTING AND / OR SIGNALING DEVICE GENERATING A HOMOGENEOUS LIGHT ON A SCREEN |
| FR1455627 | 2014-06-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015193575A1 true WO2015193575A1 (en) | 2015-12-23 |
Family
ID=51518997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2015/051436 Ceased WO2015193575A1 (en) | 2014-06-19 | 2015-06-01 | Lighting and/or signalling device generating uniform light on a screen |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3158258B1 (en) |
| CN (1) | CN106662303B (en) |
| FR (1) | FR3022608B1 (en) |
| WO (1) | WO2015193575A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3062454B1 (en) * | 2017-01-27 | 2019-03-15 | Peugeot Citroen Automobiles Sa | 3D PATTERN MASK LIGHTING DEVICE |
| FR3062452B1 (en) * | 2017-01-27 | 2019-03-29 | Peugeot Citroen Automobiles Sa | FRONT-SIDE MASK LIGHTING DEVICE LIGHTED BY IMAGE OF A COLORED PIECE |
| FR3062708A1 (en) * | 2017-02-07 | 2018-08-10 | Peugeot Citroen Automobiles Sa | VEHICLE OPTICAL BLOCK WITH INTERNAL SIDE AND VISIBLE FROM OUTSIDE |
| CN110594694A (en) * | 2018-06-12 | 2019-12-20 | 法雷奥市光（中国）车灯有限公司 | Light patterning device, vehicle lamp and motor vehicle comprising the same |
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- 2015-06-01 EP EP15732826.1A patent/EP3158258B1/en active Active
- 2015-06-01 WO PCT/FR2015/051436 patent/WO2015193575A1/en not_active Ceased
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| FR2298805A1 (en) * | 1975-01-23 | 1976-08-20 | Lucas Electrical Co Ltd | Vehicle signal of head lamp with reflector - with reflective surface resistant to wear, humidity and saline solutions |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3158258A1 (en) | 2017-04-26 |
| FR3022608B1 (en) | 2018-07-20 |
| FR3022608A1 (en) | 2015-12-25 |
| EP3158258B1 (en) | 2021-01-13 |
| CN106662303B (en) | 2019-12-24 |
| CN106662303A (en) | 2017-05-10 |
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