EP1452795A2 - Dispositif projecteur de véhicule automobile équipé de diodes électroluminescentes - Google Patents
Dispositif projecteur de véhicule automobile équipé de diodes électroluminescentes Download PDFInfo
- Publication number
- EP1452795A2 EP1452795A2 EP04290247A EP04290247A EP1452795A2 EP 1452795 A2 EP1452795 A2 EP 1452795A2 EP 04290247 A EP04290247 A EP 04290247A EP 04290247 A EP04290247 A EP 04290247A EP 1452795 A2 EP1452795 A2 EP 1452795A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- projector device
- contribution
- type
- diodes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910052736 halogen Inorganic materials 0.000 claims description 13
- 150000002367 halogens Chemical class 0.000 claims description 13
- 230000005855 radiation Effects 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 229910052724 xenon Inorganic materials 0.000 claims description 6
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 2
- 241001080024 Telles Species 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 240000008042 Zea mays Species 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 241000897276 Termes Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000003416 augmentation Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
Images
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
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
- F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
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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
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
- F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
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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
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/151—Light emitting diodes [LED] arranged in one or more lines
-
- 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
- F21S41/32—Optical layout thereof
- F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
- F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
- F21S41/335—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with continuity at the junction between adjacent areas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
- F21W2102/30—Fog lights
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2113/00—Combination of light sources
- F21Y2113/20—Combination of light sources of different form
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- the subject of the present invention is a vehicle headlamp device automobile fitted with light-emitting diodes.
- the invention has essentially to offer an alternative solution to the devices headlamps using halogen type or type light sources discharge lamps, which pose a number of problems in the production of projector devices.
- DBL, FBL, AWL, Town Light, Motorway Light and Overhead Light are grouped under the name of AFS functions.
- the projector device according to the invention will be essentially described in use as low beam. He could nevertheless be used in any other projector device mentioned, or intervene in a of the mentioned functions. Describing the invention in the context of dipped beam is therefore in no way limited to this single application.
- the first family is that of so-called elliptical projectors.
- a spot of light concentration is generated by a light source arranged in a mirror.
- the source light is placed at the first focal point of an ellipsoid-shaped mirror, said spot forming at the second focus of the mirror.
- the spot of concentration light is then projected onto the road by a converging lens, by example a plano-convex type lens.
- the second family is that of so-called surface reflection projectors complex, or parabolic.
- a beam light is generated by a small light source arranged in a reflector, or mirror.
- the projection on the ray route light reflected by a suitable reflector allows direct a light beam obeying the various constraints imposed by the standards.
- This family of projectors includes so-called surface projectors free, or complex surface, which allow a beam to be obtained directly bright with a desired cutoff line.
- the device according to the invention relates more particularly to this family of projectors.
- a parabolic projector device for example of the code fire type, of the state of the art is schematically represented in FIG. 1 by a section view.
- a code light 100 comprises, conventionally, in a housing 105, essentially a reflector 101, a light source 102, emitting light rays 103, arranged in the vicinity of the focal point of the reflector 101, and an exit surface 104 of the light beam 106.
- the light rays 103 are emitted either directly to the exit surface 104, or indirectly after have undergone any deviations and / or reflections.
- Figure 2 shows the reflector 101 seen from the front.
- the reflector 101 is virtually divided into several distinct zones, each of the zones making a rigorously defined contribution to the constitution of the light beam 106 emitted by the projector.
- a projection 300, on a plane, of this light beam is shown in Figure 3. In the case of a low beam, the light projection 300 is delimited horizontally by a cut line 306.
- the light projection 300 is artificially divided into regions distinct.
- a first region 301 and a second region 302 constitute the so-called light beam range regions. It is in these regions that the beam intensity must be maximum. It must provide a satisfactory visibility in the axis at 70 meters.
- a third region 303 and a fourth region 304 constitutes the so-called comfort regions. They provide satisfactory visibility at around 40 meters.
- a fifth region 305 constitutes the so-called width region. She permits obtain visibility downwards, i.e. by lighting up the bitumen, satisfactory at about 30 meters.
- the light source 102 of the projector device provides its contribution to each of the regions which have just been mentioned in reflecting on the reflector 101 differently depending on the reflection zones where the image of the light source 101 is formed.
- the first region of range 301 and the second region of range 302 of the light beam are essentially constituted of images of the light source reflecting respectively in a first zone 201 and in a second zone 202 of the surface reflective of reflector 101. These two zones are approximately horizontal, i.e.
- the source images light 102 in these areas must be substantially horizontal to stand just below the cut-off line 306 of the light projection 300; and, given the generally cylindrical shape of the sources halogen lamp type or discharge lamp type, the length, arranged along the projection axis of the projector, being significantly less than width, it's much easier to properly match these images below the cut line when they are horizontal, so less spread out in height as vertical images.
- This constraint which imposes a type of shape for the reflectors of the state of the art, is therefore binding.
- first comfort region 303 and the second comfort region 304 of the light beam are essentially made up of images of the light source reflecting respectively in a third zone 203 and in a fourth zone 204 of the reflective surface of the reflector 101.
- region of width 305 of the light beam is essentially consisting of images of the reflecting light source in a fifth zone 205 of the reflecting surface of the reflector 101.
- the complex surface defining the different reflection zones is the subject calculations known to those skilled in the art to obtain the light beam wish.
- a first problem encountered with this type of projector of the state of the technique is that a significant part of the light radiated by the light source is lost: in fact, the light sources used have omnidirectional radiation, i.e. diffused in all directions from space. Due to the shape of the spotlights, more particularly the presence of cheeks which limit the height of the reflectors, part of the light rays emitted by the source is not operated in the beam.
- a second problem encountered with the projectors of the state of the technique is their size: indeed, as we have seen previously, the shape of the complex surface is mathematically defined to create, from a single light source, the beam bright as a whole. The complex surface is therefore formed of a unique piece, and therefore bulky, because it cannot be divided into many elements.
- a third problem encountered with these devices spotlights is that they consume a lot of energy.
- a fourth problem is that these light sources are particularly exothermic, and that it is necessary to provide within different projectors heat dissipating devices.
- a final problem is related to the uniqueness of the light source: when it no longer works, it is the entire light beam produced by the projector which is missing.
- the invention therefore essentially relates to a projector device, intended to emit at least one type of light beam, comprising at least at least one light source and at least one reflecting surface for reflect light rays produced by the characterized light source in that the light source comprises at least one diode-type element emitting.
- Another object of the invention is a motor vehicle fitted with at least one projector device having at least one of the characteristics which have just been specified.
- FIG. 4 is a front view of a reflector 400, intended to be used in a projector according to the invention, the overall shape of which is very close to that of the state of the art reflectors.
- Source light however consists of a plurality, eight in the example shown, light-emitting diodes 401 which are arranged in a star around a central position 402 of the reflector 400.
- the eight diodes 400 are regularly spaced around the central part 402.
- each diode participating in the constitution of a beam light is bijectively associated with a particular area of the reflecting surface used to obtain the desired light beam.
- each of the eight diodes is dedicated to an area specific 403, which is reserved for it, of the reflecting surface, the different areas being symbolically delimited by a solid line.
- diodes 401 whose radiation remains less intense than that of the light sources used in the state of the technique, implies on the one hand the multiplicity of these diodes to achieve a projector device producing light beams identical to those of the state of the art, and on the other hand an increase in the surface dedicated to regions of high intensity of the light beam. So, to obtain a light beam of the type shown in FIG. 3, it is necessary to multiply the zones dedicated to the diodes which bring more particularly their contribution to the beam range regions luminous. In the example considered, we reserve three specific zones, respectively 403-p1, 403-p2 and 403-p3, which are therefore associated with three separate diodes, to produce images of each diode which will contribute to the intensity of the range regions.
- diode arrangement light emitting 400 is a so-called barrel arrangement.
- this arrangement we always have a set of diodes light-emitting around the central part 402, but also as close as possible so that the total luminous flux produced is comparable to that of a halogen lamp or Xenon usually used, especially in terms of omnidirectionality of the light flux produced.
- the reserved reflection zones for the beam range regions bright are not necessarily the horizontal areas, i.e. zones arranged in the vicinity of a horizontal and central plane of the device projector.
- This absence of constraint leaves a great diversity of choices in the distribution, on the reflecting surface 400, of the role of the different reflection zones.
- the emitting surface of the diodes may not be strictly square, it can have more varied geometric shapes (rectangle, triangle ...), its specificity being that it is generally a surface substantially flat.
- the projector device according to the invention is no longer necessarily a part mono-block, but it consists of a set of compartments which can be distributed in different places on the front panel, for example, vehicle.
- Each compartment has at least one diode and one specific reflection surface.
- We can thus, for example, have on the in front of a vehicle a set of diodes which are not necessarily close to each other, but which, associated with suitable reflective surfaces, contribute to the production of the same light bleam.
- the different compartments can however be adjacent to each other so as to give the impression of a mono-block projector device.
- the diodes can thus be arranged differently from the arrangement approaching that of the state of the art;
- Figure 5 thus shows a reflector 500 or a multiplicity of diodes 501 are arranged only along a central vertical axis 504 of the reflector, the different zones reflective 502 being arranged, possibly so compartmentalized, on either side of the vertical axis 504.
- Another advantage of the devices according to the invention is that the diode malfunction does not stop the device completely associated projector; indeed, even if the light beam is significantly modified, the other diodes present in the device projector temporarily provide satisfactory lighting.
- the diodes are oriented in such a way so that the light rays they emit in a cone of radiation, which belongs to half a space, reach in full or almost a specific area of the reflective surface of reflector 400 to which they are associated with.
- Another advantage of the invention is that the lighting of each diode can be controlled independently. So if we get a first beam bright when a set of diodes are radiating, the extinction of one or several of the diodes belonging to this set makes it possible to obtain a second light beam different from the first.
- the projector devices according to the invention can also be supplemented by light sources of the halogen lamp or lamp type discharge also called Xenon lamp. This supplement may prove interesting to reinforce the intensity of the areas of range.
- the invention covers so also hybrid headlamps whose light source is a association of one or more light-emitting diodes and a halogen or discharge lamp. Halogen lamp or lamp discharge is then advantageously reserved for the regions of scope, and the diodes make their contribution, or are reserved, to the regions of comfort or width of a light beam.
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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
- des feux de position, d'intensité et de portée faible ;
- des feux de croisement, ou codes, d'intensité plus forte et de portée sur la route avoisinant 70 mètres, qui sont utilisés essentiellement la nuit et dont la répartition du faisceau lumineux est telle qu'elle permet de ne pas éblouir le conducteur d'un véhicule croisé ;
- des feux de route longue portée, et des feux de complément de type longue portée, dont la zone de vision sur la route avoisine 200 mètres, et qui doivent être éteints lorsque l'on croise un autre véhicule afin de ne pas éblouir son conducteur ;
- des projecteurs perfectionnés, dits bimodes, qui cumulent les fonctions de feux de croisement et de feu de route en incorporant un cache amovible ;
- des feux anti-brouillard.
- une fonction dite DBL (Dynamic Bending Light en anglais pour lumière virage mobile) : cette fonction permet d'orienter un faisceau lumineux produit par une source lumineuse, par exemple en déplaçant un réflecteur par rapport à la source de lumière à laquelle il est associé, de telle sorte que lorsque le véhicule aborde un virage, la route soit éclairée de façon optimale ;
- une fonction dite FBL (Fixed Bending Light en anglais pour lumière virage fixe): cette fonction a pour vocation d'éclairer progressivement le bas-côté de la route lorsque le véhicule effectue un virage ; à cet effet, on prévoit une source lumineuse supplémentaire qui vient compléter progressivement les feux de croisement ou de route lors de la négociation d'un virage ;
- une fonction dite DRL (Day Running Light): cette fonction, couramment appelée feu de circulation diurne, assure l'allumage permanent de projecteurs du dispositif projecteur, notamment pour signaler aux piétons la présence du véhicule en circulation et ainsi éviter les chocs piétons ;
- une fonction dite Town Light en anglais, pour feu de ville. Cette fonction assure l'élargissement d'un faisceau de type feu de croisement tout en diminuant légèrement sa portée ;
- une fonction dite Motorway Light en anglais, pour feu d'autoroute. Cette fonction assure une augmentation de la portée d'un feu de croisement ;
- une fonction dite AWL (Adverse Weather Light en anglais, pour feu de mauvais temps). Cette fonction assure une modification d'un faisceau de feu de croisement de telle sorte que le conducteur n'est pas ébloui par un reflet de son propre projecteur ;
- une fonction dite Overhead Light en anglais, pour feu surélevé. Cette fonction assure une modification d'un faisceau de feu de croisement de telle sorte que des portiques situés en hauteur sont éclairés de façon satisfaisante au moyen des feux de croisement.
- tout d'abord, ce type de diodes ne rayonne pas de façon omnidirectionnelle, mais rayonne dans un demi espace opposé au substrat qui supporte sa jonction P-N ; ainsi, en utilisant un rayonnement plus directif que les lampes halogènes ou à décharge de l'état de la technique, la quantité d'énergie perdue est moins importante.
- ensuite, on a récemment perfectionné ces diodes en terme d'intensité de rayonnement ; elles peuvent désormais rayonner un flux d'environ 100 lumens. De plus, elles émettent un rayonnement, depuis longtemps dans le rouge mais désormais également dans le blanc. La quantité de chaleur qu'elles dégagent est limitée, et un certain nombre de contraintes, liées à la dissipation de la chaleur dans les dispositifs projecteurs de l'état de la technique, disparaissent.
- enfin, les diodes consomment moins d'énergie, même à intensité de rayonnement égal, que les lampes à décharge ou les lampes halogènes ; elles sont peu encombrantes, et leur forme particulière offre des possibilités nouvelles pour la réalisation et la disposition des surfaces complexes qui leur sont associées.
- le dispositif projecteur émet au moins un faisceau lumineux de type de ceux émis par un feu de croisement, ou par un feu de position, ou par un feu de route, ou par un feu anti-brouillard, ou correspondant à une fonction quelconque parmi les fonctions AFS, ou à une fonction DRL. Il peut émettre un faisceau lumineux à coupure, notamment par un paramétrage approprié des surfaces réfléchissantes associées à la ou aux sources lumineuses
- chaque élément de type diode électroluminescente, dont le rayon lumineux produit est un rayonnement localisé dans un demi espace, est orienté de telle sorte qu'au moins une partie de son rayonnement atteigne, sur la surface réfléchissante, une zone spécifique de réflexion qui lui est dédiée, chaque zone spécifique étant plus spécialement destinée à une contribution particulière dans la production du faisceau lumineux.
- les différentes zones spécifiques de réflexion sont compartimentées.
- la contribution particulière est soit une contribution de portée, soit une contribution de largeur, soit une contribution de confort.
- chaque diode électroluminescente du dispositif projecteur est orientée pour que la totalité de son rayonnement atteigne la zone spécifique de réflexion qui lui est dédiée.
- au moins deux diodes électroluminescentes sont utilisées pour la contribution de portée,
- le nombre de diodes électroluminescentes est par exemple compris entre 2 et 20, ou entre 4 et 14 (pour la contribution de portée ou toute autre contribution).
- au moins une zone spécifique de réflexion destinée à une contribution de portée est une zone non horizontale de la surface réfléchissante, ce qui est une caractéristique tout à fait spécifique à l'invention et que l'on ne rencontre pas avec les sources lumineuses plus conventionnelles
- la source lumineuse est complétée par un élément rayonnant de type lampe halogène ou lampe à Xénon (appelée aussi lampe à décharge ou lampe HID en anglais) pour générer un faisceau lumineux donné , on a alors dans cette variante un éclairage "hybride" tout à fait innovant.
- l'élément rayonnant de type lampe halogène ou lampe à Xénon rayonne sur une zone spécifique de réflexion qui lui est dédiée, ladite zone étant utilisée de préférence pour une contribution de portée.
- l'allumage d'au moins un élément de type diode électroluminescente peut être commandé indépendamment de l'allumage des autres éléments de la source lumineuse.
- selon une première variante, les différentes diodes électroluminescentes que comporte la source lumineuse sont proches les unes des autres, rassemblées dans une configuration telle qu'on peut alors assimiler l'ensemble des diodes à une unique source lumineuse conventionnelle telle une lampe halogène. Dans ce cas, on peut ainsi regrouper les diodes en "barillet", c'est-à-dire de façon à ce qu'elles soient approximativement disposées les unes à côté des autres sur un support de révolution comme un cylindre,
- selon une seconde variante, chaque élément de type diode électroluminescente est séparé des autres, et est notamment disposée dans un compartiment qui lui est dédié de la surface réfléchissante, ledit compartiment comportant une des zones spécifiques de réflexion, les différents compartiments étant disposés de façon adjacente ou séparée. Dans ce cas, on a alors autant de sources lumineuses que de diodes, même si c'est l'ensemble des diodes qui contribue à générer un faisceau donné. Les miroirs peuvent ainsi être répartis en matrice de miroirs. Tous les miroirs peuvent être contigus ou séparés les uns des autres, ils peuvent être mécaniquement solidarisés ou solidarisables, ne faire qu'une pièce ou non. On a alors des modules miroir/diode, que l'on peut assembler de façon flexible les uns par rapport aux autres, ce qui est très intéressant du point de vue du deign du projecteur dans son ensemble.
- à la figure 1, déjà décrite, une représentation schématique d'un dispositif projecteur de l'état de la technique ;
- à la figure 2, également déjà décrite, une représentation schématique d'un découpage, utilisé dans l'état de la technique, de la surface réfléchissante d'un réflecteur ;
- à la figure 3, également déjà décrite, une représentation schématique des différentes régions constituant un faisceau lumineux ;
- à la figure 4, un premier exemple de réalisation d'un réflecteur utilisé dans le dispositif projecteur selon l'invention;
- à la figure 5, un deuxième exemple de réalisation d'un réflecteur utilisé dans le dispositif projecteur selon l'invention.
Claims (15)
- Dispositif projecteur, destiné à émettre au moins un type de faisceau lumineux, comprenant au moins une source lumineuse et au moins une surface réfléchissante pour réfléchir des rayons lumineux produits par la source lumineuse caractérisé en ce que la ou au moins une des source(s) lumineuse(s) comporte au moins un élément de type diode électroluminescente (401 ;501).
- Dispositif projecteur selon la revendication précédente caractérisé en ce qu'il émet au moins un faisceau lumineux de type de ceux émis par un feu de croisement, ou par un feu de position, ou par un feu de route, ou par un feu anti-brouillard, ou correspondant à une fonction quelconque parmi les fonctions AFS, ou à une fonction DRL.
- Dispositif projecteur selon l'une au moins des revendications précédentes caractérisé en ce que chaque élément de type diode électroluminescente (401 ;501) est orienté de telle sorte qu'au moins une partie de son rayonnement atteigne, sur la surface réfléchissante, une zone spécifique (403 ;502) de réflexion qui lui est dédiée, chaque zone spécifique (403 ;502) étant plus spécialement destinée à une contribution particulière dans la production du faisceau lumineux.
- Dispositif projecteur selon la revendication précédente caractérisé en ce que les différentes zones spécifique de réflexion sont compartimentées.
- Dispositif projecteur selon l'une au moins des revendications 3 ou 4 caractérisé en ce que la contribution particulière est soit une contribution de portée, soit une contribution de largeur, soit une contribution de confort.
- Dispositif projecteur selon l'une au moins des revendications 3 à 5 caractérisé en ce que chaque diode électroluminescente (401 ;501) du dispositif projecteur est orientée pour que la totalité de son rayonnement atteigne la zone spécifique (403 ;502) de réflexion qui lui est dédiée.
- Dispositif projecteur selon l'une au moins des revendications 5 ou 6 caractérisé en ce qu'au moins deux diodes électroluminescentes sont utilisées pour la contribution de portée, le nombre de diodes électroluminescentes étant par exemple compris entre 2 et 20, ou entre 4 et 14.
- Dispositif projecteur selon l'une au moins des revendications 3 à 7 caractérisé en ce qu'au moins une zone spécifique de réflexion (403-p3) destinée à une contribution de portée est une zone non horizontale de la surface réfléchissante.
- Dispositif projecteur selon l'une au moins des revendications précédentes caractérisé en ce que la ou au moins une des source(s) lumineuse(s) est complétée par un élément rayonnant de type lampe halogène ou lampe à décharge, lampe xenon.
- Dispositif projecteur selon la revendication précédente et la revendication 5 caractérisé en ce que l'élément rayonnant de type lampe halogène ou lampe xenon rayonne sur une zone spécifique de réflexion qui lui est dédiée, ladite zone étant de préférence utilisée pour une contribution de portée.
- Dispositif projecteur selon l'une au moins des revendications précédentes caractérisé en ce que l'allumage d'au moins un élément de type diode électroluminescente (401 ;501) peut être commandé indépendamment de l'allumage des autres éléments de la source lumineuse.
- Dispositif projecteur selon l'une au moins des revendications précédentes caractérisé en ce que les différentes diodes électroluminescentes (401 ;501) sont rassemblées, par exemple en barillet, ou sont séparées les unes des autres.
- Dispositif selon l'une au moins des revendications précédentes caractérisé en ce que les diodes sont associées à des surfaces réfléchissantes composées de matrice(s) de miroirs.
- Dispositif projecteur selon la revendication 4 caractérisé en ce que chaque élément de type diode électroluminescente (401 ;501) est disposé dans un compartiment qui lui est dédié de la surface réfléchissante, ledit compartiment comportant une des zones spécifiques (403 ;502) de réflexion, les différents compartiments étant disposés de façon adjacente ou séparée.
- Véhicule automobile équipé d'un dispositif projecteur selon l'une au moins des revendications précédentes.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0301511 | 2003-02-07 | ||
| FR0301511A FR2851029B1 (fr) | 2003-02-07 | 2003-02-07 | Dispositif projecteur de vehicule automobile equipe de diodes electroluminescentes |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1452795A2 true EP1452795A2 (fr) | 2004-09-01 |
| EP1452795A3 EP1452795A3 (fr) | 2007-05-09 |
| EP1452795B1 EP1452795B1 (fr) | 2009-11-18 |
Family
ID=32731890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04290247A Revoked EP1452795B1 (fr) | 2003-02-07 | 2004-01-30 | Dispositif projecteur de véhicule automobile équipé de diodes électroluminescentes |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20040156211A1 (fr) |
| EP (1) | EP1452795B1 (fr) |
| JP (1) | JP4651951B2 (fr) |
| AT (1) | ATE449285T1 (fr) |
| DE (1) | DE602004024149D1 (fr) |
| ES (1) | ES2334132T3 (fr) |
| FR (1) | FR2851029B1 (fr) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2275734A1 (fr) | 2009-07-15 | 2011-01-19 | Hella KGaA Hueck & Co. | Unité d'éclairage pour véhicules |
| EP2278217A1 (fr) * | 2009-07-21 | 2011-01-26 | Valeo Vision | Module d'éclairage pour projecteur de véhicule automobile, et projecteur équipé d'au moins un tel module |
| WO2023285339A1 (fr) * | 2021-07-12 | 2023-01-19 | HELLA GmbH & Co. KGaA | Phare pour véhicules |
| FR3139881A1 (fr) * | 2022-09-20 | 2024-03-22 | Valeo Vision | Module lumineux |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4018016B2 (ja) * | 2003-03-31 | 2007-12-05 | 株式会社小糸製作所 | 車両用前照灯 |
| FR2857921B1 (fr) * | 2003-07-24 | 2006-11-24 | Valeo Vision | Projecteur lumineux fixe de virage pour vehicule automobile |
| FR2872257B1 (fr) * | 2004-06-24 | 2006-08-18 | Valeo Vision Sa | Module d'eclairage pour vehicule automobile et projecteur comportant un tel module |
| US7261451B2 (en) * | 2005-02-23 | 2007-08-28 | Osram Sylvania Inc. | Colored headlamp |
| US7416324B1 (en) * | 2005-06-22 | 2008-08-26 | Osram Sylvania Inc. | Multi-color or multi-function LED vehicle light assembly |
| JP4745272B2 (ja) | 2007-03-14 | 2011-08-10 | 株式会社小糸製作所 | 車両用灯具 |
| JP2008226707A (ja) | 2007-03-14 | 2008-09-25 | Koito Mfg Co Ltd | 車両用灯具 |
| EP2337991B2 (fr) | 2008-09-18 | 2018-03-07 | Philips Intellectual Property & Standards GmbH | Unité d'éclairage et phare de véhicule |
| DE102012221385A1 (de) * | 2012-11-22 | 2014-05-22 | Automotive Lighting Reutlingen Gmbh | Beleuchtungseinrichtung für ein Kraftfahrzeug |
| JP2014183008A (ja) * | 2013-03-21 | 2014-09-29 | Koito Mfg Co Ltd | 車両用灯具 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19531295A1 (de) * | 1995-08-25 | 1997-02-27 | Reitter & Schefenacker Gmbh | Optikkörper für mindestens eine LED |
| US5984494A (en) * | 1995-09-08 | 1999-11-16 | Jimmy G. Cook | Light shield for an illumination system |
| US6053623A (en) * | 1998-03-03 | 2000-04-25 | New Option Lighting, Llc | Waterproof light with multi-faceted reflector in a flexible enclosure |
| JP4168357B2 (ja) * | 1999-03-24 | 2008-10-22 | スタンレー電気株式会社 | 灯具 |
| JP4050432B2 (ja) * | 1999-10-01 | 2008-02-20 | 株式会社小糸製作所 | 車両用灯具の反射鏡の反射面決定方法 |
| DE10009782B4 (de) * | 2000-03-01 | 2010-08-12 | Automotive Lighting Reutlingen Gmbh | Beleuchtungseinrichtung eines Fahrzeugs |
| JP2002083507A (ja) * | 2000-09-06 | 2002-03-22 | Stanley Electric Co Ltd | 副光源を備えた灯具 |
| US6404132B1 (en) * | 2001-03-27 | 2002-06-11 | Liteglow Industries, Inc. | Neon cruising lights for use with motor vehicle headlights |
| US6504477B1 (en) * | 2001-09-26 | 2003-01-07 | Yu-Chu Lin | Secondary alert light for motor vehicles |
| US6682211B2 (en) * | 2001-09-28 | 2004-01-27 | Osram Sylvania Inc. | Replaceable LED lamp capsule |
| US6890086B2 (en) * | 2001-12-20 | 2005-05-10 | Gold Coral International Limited | Electronically controlled multi-light flashlight |
| US6756893B1 (en) * | 2002-01-14 | 2004-06-29 | Robert Fernandez | Light emitting diodes surrounding a vehicle lamp |
| US7048412B2 (en) * | 2002-06-10 | 2006-05-23 | Lumileds Lighting U.S., Llc | Axial LED source |
-
2003
- 2003-02-07 FR FR0301511A patent/FR2851029B1/fr not_active Expired - Fee Related
-
2004
- 2004-01-30 EP EP04290247A patent/EP1452795B1/fr not_active Revoked
- 2004-01-30 DE DE602004024149T patent/DE602004024149D1/de not_active Expired - Lifetime
- 2004-01-30 ES ES04290247T patent/ES2334132T3/es not_active Expired - Lifetime
- 2004-01-30 AT AT04290247T patent/ATE449285T1/de not_active IP Right Cessation
- 2004-02-03 US US10/771,681 patent/US20040156211A1/en not_active Abandoned
- 2004-02-04 JP JP2004028241A patent/JP4651951B2/ja not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2275734A1 (fr) | 2009-07-15 | 2011-01-19 | Hella KGaA Hueck & Co. | Unité d'éclairage pour véhicules |
| EP2278217A1 (fr) * | 2009-07-21 | 2011-01-26 | Valeo Vision | Module d'éclairage pour projecteur de véhicule automobile, et projecteur équipé d'au moins un tel module |
| FR2948439A1 (fr) * | 2009-07-21 | 2011-01-28 | Valeo Vision | Module d'eclairage pour projecteur de vehicule automobile, et projecteur equipe d'au moins un tel module. |
| EP3073185A1 (fr) * | 2009-07-21 | 2016-09-28 | Valeo Vision | Module d'eclairage pour projecteur de vehicule automobile, et projecteur equipe d'au moins un tel module |
| WO2023285339A1 (fr) * | 2021-07-12 | 2023-01-19 | HELLA GmbH & Co. KGaA | Phare pour véhicules |
| US12259103B2 (en) | 2021-07-12 | 2025-03-25 | HELLA GmbH & Co. KGaA | Headlamp for vehicles |
| FR3139881A1 (fr) * | 2022-09-20 | 2024-03-22 | Valeo Vision | Module lumineux |
| WO2024061970A1 (fr) * | 2022-09-20 | 2024-03-28 | Valeo Vision | Module lumineux |
Also Published As
| Publication number | Publication date |
|---|---|
| DE602004024149D1 (de) | 2009-12-31 |
| JP4651951B2 (ja) | 2011-03-16 |
| FR2851029A1 (fr) | 2004-08-13 |
| JP2004241388A (ja) | 2004-08-26 |
| US20040156211A1 (en) | 2004-08-12 |
| FR2851029B1 (fr) | 2006-01-13 |
| ATE449285T1 (de) | 2009-12-15 |
| ES2334132T3 (es) | 2010-03-05 |
| EP1452795B1 (fr) | 2009-11-18 |
| EP1452795A3 (fr) | 2007-05-09 |
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