WO2009089873A1 - Illuminating device of a vehicle - Google Patents

Illuminating device of a vehicle Download PDF

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Publication number
WO2009089873A1
WO2009089873A1 PCT/EP2008/010381 EP2008010381W WO2009089873A1 WO 2009089873 A1 WO2009089873 A1 WO 2009089873A1 EP 2008010381 W EP2008010381 W EP 2008010381W WO 2009089873 A1 WO2009089873 A1 WO 2009089873A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
projection lens
lighting device
vehicle
lens holder
Prior art date
Application number
PCT/EP2008/010381
Other languages
German (de)
French (fr)
Inventor
Stefan Eberhardt
Burkhard Leutiger
Heinz Redlich
Original Assignee
Dr. Ing. H.C. F. Porsche Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dr. Ing. H.C. F. Porsche Aktiengesellschaft filed Critical Dr. Ing. H.C. F. Porsche Aktiengesellschaft
Publication of WO2009089873A1 publication Critical patent/WO2009089873A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/29—Attachment thereof
    • F21S41/295—Attachment thereof specially adapted to projection lenses
    • 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]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • 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 invention relates to a lighting device of a vehicle, in particular a vehicle headlight, according to the preamble of patent claim 1.
  • Motor vehicles have a multiplicity of illumination devices, namely on the one hand via illumination devices which serve to illuminate a vehicle interior or devices assigned to the vehicle interior, and on the other hand via illumination devices which serve to illuminate an environment of the motor vehicle.
  • the illumination devices of a motor vehicle which serve to illuminate an environment of the motor vehicle, include in particular so-called vehicle headlights, vehicle headlights serving to illuminate a roadway of the motor vehicle.
  • Vehicle headlights are, in particular, reversing lights and headlights with different functions, such as low beam, fog light, high beam, motorway light or the like.
  • Conventionally known lighting devices of a vehicle which serve to illuminate an environment of the motor vehicle, usually comprise at least one lens module, wherein such a lens module comprises a light source with a carrier and a projection lens, wherein the projection lens via a lens holder on the support of the bulb or on a reflector of the lighting device is attached.
  • the projection lens and the lens holder are designed as separate assemblies, wherein the projection lens is either screwed or clamped on the lens holder.
  • the present invention based on the problem to provide a novel lighting device of a vehicle.
  • This problem is solved by a lighting device according to claim 1.
  • the lens holder is an integral part of the projection lens.
  • the illumination device according to the invention comprises at least one lens module whose lens holder is an integral part of the projection lens.
  • the luminous means is designed as an LED illuminant and comprises at least one LED, wherein the or each LED is positioned on the carrier, and wherein the projection lens is attached to the carrier via the integral lens holder.
  • Fig. 1 is a schematic representation of a known from the prior art
  • FIG. 2 is a schematic representation of a device according to the invention
  • Lighting device of a vehicle is a vehicle.
  • the present invention relates to a lighting device of a vehicle, which is designed in particular as a vehicle headlight.
  • a vehicle headlight is used to illuminate a roadway of a motor vehicle.
  • FIG. 1 shows a lighting device 10 known from the prior art, the lighting device 10 of FIG. 1 comprising a lens module 11 which is arranged in an inner space 14 formed by a housing 12 and a cover 13 of the lighting device 10.
  • the lens module 11 of the illumination device 10 known from the prior art has a designed as an LED illuminant 15 and a projection lens 16.
  • the designed as an LED illuminant 15 comprises at least one LED, which is attached to a support 17 of the illuminant 15 ,
  • the projection lens 16 is fixed to the carrier 17 via a lens holder 18 in the prior art, wherein lens holder 18 and projection lens 16 are designed according to the prior art as separate assemblies.
  • the projection lens 16 is locked to the lens holder 18, for which purpose locking lugs 19 of the lens holder 18 engage in corresponding recesses of the projection lens 16.
  • FIG. 2 shows a schematic representation of a lighting device 20 according to the invention of a vehicle, wherein the lighting device 20 of FIG. 2 comprises a lens module 21.
  • the lens module 21 is positioned in an inner space 24 of the illumination device 20 formed by a housing 22 and a cover plate 23.
  • the illumination device 20 according to the invention may comprise a plurality of such lens modules 21.
  • the lens module 21 of the illumination device 20 comprises a light-emitting means 25, preferably designed as an LED light source, and a light source Projection lens 26.
  • the LED lighting means 25 comprises at least one LED, which is fixed to a support 27 of the lighting means 25.
  • the projection lens 26 is attached via a lens carrier 28 on the carrier 27 of the illuminant 25, wherein according to the invention the lens holder 28 is an integral part of the projection lens 26.
  • the lens holder 28 is an integral part of the projection lens 26.
  • the lens holder 28 and the projection lens 26 of the lens module 21 are made of the same material, in particular of the same plastic.
  • the lens holder 28 is molded onto the projection lens 26.
  • the projection lens 26 is attached to the carrier 27 of the luminous means 25 via the integral lens holder 28 thereof.
  • the projection lens 26 is attached to a reflector of the illumination device 20 by means of the integral lens holder 28 thereof.

Abstract

The invention relates to an illuminating device (20) of a vehicle, particularly a vehicle headlight, comprising at least one lens module (21), wherein this or each lens module (21) comprises an illumination means (25) comprising a carrier (27) and a projection lens (26) mounted via a lens holder (28) on the carrier (27) of the illuminating means or on a reflector. According to the invention, the lens holder (28) is an integral component of the projection lens (26).

Description

Beleuchtungseinrichtung eines Fahrzeugs Lighting device of a vehicle
Die Erfindung betrifft eine Beleuchtungseinrichtung eines Fahrzeugs, insbesondere einen Fahrzeugscheinwerfer, nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a lighting device of a vehicle, in particular a vehicle headlight, according to the preamble of patent claim 1.
Kraftfahrzeuge verfügen über eine Vielzahl von Beleuchtungseinrichtungen, nämlich einerseits über Beleuchtungseinrichtungen, die der Beleuchtung eines Fahrzeuginnenraums bzw. von dem Fahrzeuginnenraum zugeordneten Einrichtungen dienen, und andererseits über Beleuchtungseinrichtungen, die der Beleuchtung einer Umgebung des Kraftfahrzeugs dienen. Zu den Beleuchtungseinrichtungen eines Kraftfahrzeugs, die der Beleuchtung einer Umgebung des Kraftfahrzeugs dienen, zählen insbesondere sogenannte Fahrzeugscheinwerfer, wobei Fahrzeugscheinwerfer der Ausleuchtung einer Fahrbahn des Kraftfahrzeugs dienen. Bei Fahrzeugscheinwerfern handelt es sich insbesondere um Rückfahrscheinwerfer sowie Frontscheinwerfer mit unterschiedlichen Funktionen wie Abblendlicht, Nebellicht, Fernlicht, Autobahnlicht oder dergleichen.Motor vehicles have a multiplicity of illumination devices, namely on the one hand via illumination devices which serve to illuminate a vehicle interior or devices assigned to the vehicle interior, and on the other hand via illumination devices which serve to illuminate an environment of the motor vehicle. The illumination devices of a motor vehicle, which serve to illuminate an environment of the motor vehicle, include in particular so-called vehicle headlights, vehicle headlights serving to illuminate a roadway of the motor vehicle. Vehicle headlights are, in particular, reversing lights and headlights with different functions, such as low beam, fog light, high beam, motorway light or the like.
Aus der Praxis bekannte Beleuchtungseinrichtungen eines Fahrzeugs, die der Beleuchtung einer Umgebung des Kraftfahrzeugs dienen, umfassen üblicherweise mindestens ein Linsenmodul, wobei ein solches Linsenmodul ein Leuchtmittel mit einem Träger und eine Projektionslinse umfasst, wobei die Projektionslinse über einen Linsenhalter an dem Träger des Leuchtmittels oder an einem Reflektor der Beleuchtungseinrichtung befestigt ist. Hierbei sind nach dem Stand der Technik die Projektionslinse sowie der Linsenhalter als separate Baugruppen ausgeführt, wobei die Projektionslinse am Linsenhalter entweder verschraubt oder verklemmt ist.Conventionally known lighting devices of a vehicle, which serve to illuminate an environment of the motor vehicle, usually comprise at least one lens module, wherein such a lens module comprises a light source with a carrier and a projection lens, wherein the projection lens via a lens holder on the support of the bulb or on a reflector of the lighting device is attached. In this case, according to the prior art, the projection lens and the lens holder are designed as separate assemblies, wherein the projection lens is either screwed or clamped on the lens holder.
Hiervon ausgehend liegt der vorliegenden Erfindung das Problem zu Grunde eine neuartige Beleuchtungseinrichtung eines Fahrzeugs zu schaffen. Dieses Problem wird durch eine Beleuchtungseinrichtung gemäß Patentanspruch 1 gelöst. Erfindungsgemäß ist der Linsenhalter integraler Bestandteil der Projektionslinse. Die erfindungsgemäße Beleuchtungseinrichtung umfasst mindestens ein Linsenmodul, dessen Linsenhalter integraler Bestandteil der Projektionslinse ist. Hierdurch können optisch störende Kanten sowie Abschattungen zwischen Linsenhalter und Projektionslinse vermieden werden.On this basis, the present invention based on the problem to provide a novel lighting device of a vehicle. This problem is solved by a lighting device according to claim 1. According to the invention, the lens holder is an integral part of the projection lens. The illumination device according to the invention comprises at least one lens module whose lens holder is an integral part of the projection lens. As a result, visually disturbing edges and shadowing between lens holder and projection lens can be avoided.
Weiterhin werden mechanische Schwachstellen an der Projektionslinse durch Löcher oder Rastnasen, die nach dem Stand der Technik zur Befestigung der Projektionslinse am Linsenhalter erforderlich sind, vermieden. Ferner kann die Anzahl der benötigten Bauteile verringert und damit der Montageaufwand bei der Herstellung einer erfindungsgemäßen Beleuchtungseinrichtung reduziert werden.Furthermore, mechanical weaknesses on the projection lens through holes or locking lugs, which are required in the prior art for attachment of the projection lens on the lens holder, avoided. Furthermore, the number of components required can be reduced and thus the assembly costs in the production of a lighting device according to the invention can be reduced.
Nach einer vorteilhaften Weiterbildung der Erfindung ist das Leuchtmittel als LED- Leuchtmittel ausgebildet und umfasst mindestens eine LED, wobei die oder jede LED auf dem Träger positioniert ist, und wobei die Projektionslinse über den integralen Linsenhalter an dem Träger befestigt ist.According to an advantageous development of the invention, the luminous means is designed as an LED illuminant and comprises at least one LED, wherein the or each LED is positioned on the carrier, and wherein the projection lens is attached to the carrier via the integral lens holder.
Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung. Ausführungsbeispiele der Erfindung werden, ohne hierauf beschränkt zu sein, an Hand der Zeichnung näher erläutert. Dabei zeigt:Preferred embodiments of the invention will become apparent from the dependent claims and the description below. Embodiments of the invention will be described, without being limited thereto, with reference to the drawings. Showing:
Fig. 1 eine schematisierte Darstellung einer aus dem Stand der Technik bekanntenFig. 1 is a schematic representation of a known from the prior art
Beleuchtungseinrichtung eines Fahrzeugs; und Fig. 2 eine schematisierte Darstellung einer erfindungsgemäßenLighting device of a vehicle; and FIG. 2 is a schematic representation of a device according to the invention
Beleuchtungseinrichtung eines Fahrzeugs.Lighting device of a vehicle.
Die hier vorliegende Erfindung betrifft eine Beleuchtungseinrichtung eines Fahrzeugs, die insbesondere als Fahrzeugscheinwerfer ausgebildet ist. Ein Fahrzeugscheinwerfer dient der Beleuchtung einer Fahrbahn eines Kraftfahrzeugs. Bevor nachfolgend unter Bezugnahme auf Fig. 2 ein bevorzugtes Ausführungsbeispiel einer erfindungsgemäßen Beleuchtungseinrichtung beschrieben wird, soll vorab unter Bezugnahme auf Fig. 1 auf den Stand der Technik eingegangen werden.The present invention relates to a lighting device of a vehicle, which is designed in particular as a vehicle headlight. A vehicle headlight is used to illuminate a roadway of a motor vehicle. Before a preferred embodiment of a lighting device according to the invention is described below with reference to FIG. 2, reference is made in advance to the prior art with reference to FIG. 1.
So zeigt Fig. 1 eine aus dem Stand der Technik bekannte Beleuchtungseinrichtung 10, wobei die Beleuchtungseinrichtung 10 der Fig. 1 ein Linsenmodul 11 umfasst, welches in einem von einem Gehäuse 12 und einer Abdeckscheibe 13 der Beleuchtungseinrichtung 10 gebildeten Innenraum 14 derselben angeordnet ist.Thus, FIG. 1 shows a lighting device 10 known from the prior art, the lighting device 10 of FIG. 1 comprising a lens module 11 which is arranged in an inner space 14 formed by a housing 12 and a cover 13 of the lighting device 10.
Das Linsenmodul 11 der aus dem Stand der Technik bekannten Beleuchtungseinrichtung 10 verfügt über ein als LED-Leuchtmittel ausgebildetes Leuchtmittel 15 sowie eine Projektionslinse 16. Das als LED-Leuchtmittel ausgebildete Leuchtmittel 15 umfasst mindestens ein LED, welches an einem Träger 17 des Leuchtmittels 15 befestigt ist.The lens module 11 of the illumination device 10 known from the prior art has a designed as an LED illuminant 15 and a projection lens 16. The designed as an LED illuminant 15 comprises at least one LED, which is attached to a support 17 of the illuminant 15 ,
Die Projektionslinse 16 ist nach dem Stand der Technik über einen Linsenhalter 18 an dem Träger 17 befestigt, wobei Linsenhalter 18 und Projektionslinse 16 nach dem Stand der Technik als separate Baugruppen ausgeführt sind. So ist gemäß Fig. 1 die Projektionslinse 16 mit dem Linsenhalter 18 verrastet, wobei hierzu Rastnasen 19 des Linsenhalters 18 in entsprechende Ausnehmungen der Projektionslinse 16 eingreifen.The projection lens 16 is fixed to the carrier 17 via a lens holder 18 in the prior art, wherein lens holder 18 and projection lens 16 are designed according to the prior art as separate assemblies. Thus, as shown in FIG. 1, the projection lens 16 is locked to the lens holder 18, for which purpose locking lugs 19 of the lens holder 18 engage in corresponding recesses of the projection lens 16.
Fig. 2 zeigt eine schematisierte Darstellung einer erfindungsgemäßen Beleuchtungseinrichtung 20 eines Fahrzeugs, wobei die Beleuchtungseinrichtung 20 der Fig. 2 ein Linsenmodul 21 umfasst. Das Linsenmodul 21 ist in einem von einem Gehäuse 22 und einer Abdeckscheibe 23 gebildeten Innenraum 24 der Beleuchtungseinrichtung 20 positioniert. Obwohl in Fig. 2 ausschließlich ein einziges Linsenmodul 21 dargestellt ist, kann die erfindungsgemäße Beleuchtungseinrichtung 20 mehrere derartige Linsenmodule 21 umfassen.FIG. 2 shows a schematic representation of a lighting device 20 according to the invention of a vehicle, wherein the lighting device 20 of FIG. 2 comprises a lens module 21. The lens module 21 is positioned in an inner space 24 of the illumination device 20 formed by a housing 22 and a cover plate 23. Although only a single lens module 21 is shown in FIG. 2, the illumination device 20 according to the invention may comprise a plurality of such lens modules 21.
Das Linsenmodul 21 der erfindungsgemäßen Beleuchtungseinrichtung 20 umfasst ein vorzugsweise als LED-Leuchtmittel ausgebildetes Leuchtmittel 25 sowie eine Projektionslinse 26. Das LED-Leuchtmittel 25 umfasst mindestens eine LED, welche an einem Träger 27 des Leuchtmittels 25 befestigt ist.The lens module 21 of the illumination device 20 according to the invention comprises a light-emitting means 25, preferably designed as an LED light source, and a light source Projection lens 26. The LED lighting means 25 comprises at least one LED, which is fixed to a support 27 of the lighting means 25.
Die Projektionslinse 26 ist über einen Linsenträger 28 am Träger 27 des Leuchtmittels 25 befestigt, wobei erfindungsgemäß der Linsenhalter 28 integraler Bestandteil der Projektionslinse 26 ist. Hierdurch können optisch störende Kanten und Abschattungen zwischen Linsenhalter 28 und Projektionslinse 26 vermieden werden. Weiterhin kann die Anzahl der benötigten Baugruppen und damit der Montageaufwand reduziert werden. Ausnehmungen im Bereich der Projektionslinse 26 können vermieden werden, weshalb die Projektionslinse 26 eine höhere mechanische Stabilität bzw. mechanische Festigkeit aufweist.The projection lens 26 is attached via a lens carrier 28 on the carrier 27 of the illuminant 25, wherein according to the invention the lens holder 28 is an integral part of the projection lens 26. As a result, optically disturbing edges and shadowing between lens holder 28 and projection lens 26 can be avoided. Furthermore, the number of required modules and thus the assembly costs can be reduced. Recesses in the region of the projection lens 26 can be avoided, which is why the projection lens 26 has a higher mechanical stability or mechanical strength.
Vorzugsweise sind der Linsenhalter 28 und die Projektionslinse 26 des Linsenmoduls 21 aus demselben Werkstoff, insbesondere aus demselben Kunststoff, gefertigt. Dabei ist vorzugsweise der Linsenhalter 28 an die Projektionslinse 26 angespritzt.Preferably, the lens holder 28 and the projection lens 26 of the lens module 21 are made of the same material, in particular of the same plastic. In this case, preferably the lens holder 28 is molded onto the projection lens 26.
Im gezeigten Ausführungsbeispiel der Fig. 2 ist die Projektionslinse 26 über den integralen Linsenhalter 28 derselben am Träger 27 des Leuchtmittels 25 befestigt. Alternativ ist es auch möglich, dass die Projektionslinse 26 mit Hilfe des integralen Linsenhalters 28 derselben an einem Reflektor der Beleuchtungseinrichtung 20 befestigt ist. In the exemplary embodiment shown in FIG. 2, the projection lens 26 is attached to the carrier 27 of the luminous means 25 via the integral lens holder 28 thereof. Alternatively, it is also possible that the projection lens 26 is attached to a reflector of the illumination device 20 by means of the integral lens holder 28 thereof.

Claims

Patentansprüche claims
1. Beleuchtungseinrichtung eines Fahrzeugs, insbesondere Fahrzeugscheinwerfer, mit mindestens einem Linsenmodul (21), wobei das oder jedes Linsenmodul (21) jeweils ein Leuchtmittel (25) mit einem Träger (27) und eine über einen Linsenhalter (28) an dem Träger (27) des Leuchtmittels oder an einem Reflektor befestigte Projektionslinse (26) aufweist, dadurch gekennzeichnet, dass der Linsenhalter (28) integraler Bestandteil der Projektionslinse (26) ist.1. Lighting device of a vehicle, in particular vehicle headlight, with at least one lens module (21), wherein the or each lens module (21) each have a light source (25) with a carrier (27) and a lens holder (28) on the carrier (27 ) of the luminous means or projection lens (26) attached to a reflector, characterized in that the lens holder (28) is an integral part of the projection lens (26).
2. Beleuchtungseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das2. Lighting device according to claim 1, characterized in that the
Leuchtmittel (25) als LED-Leuchtmittel ausgebildet ist und mindestens eine LED umfasst, wobei die oder jede LED auf dem Träger (27) positioniert ist.Illuminant (25) is designed as an LED illuminant and comprises at least one LED, wherein the or each LED is positioned on the carrier (27).
3. Beleuchtungseinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Linsenhalter (28) an die Projektionslinse (26) angespritzt ist.3. Lighting device according to claim 1 or 2, characterized in that the lens holder (28) is injection-molded onto the projection lens (26).
4. Beleuchtungseinrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Linsenhalter (28) und die Projektionslinse (26) aus demselben Werkstoff gefertigt sind.4. Lighting device according to one of claims 1 to 3, characterized in that the lens holder (28) and the projection lens (26) are made of the same material.
5. Beleuchtungseinrichtung nach Anspruch 4, dadurch gekennzeichnet, dass der5. Lighting device according to claim 4, characterized in that the
Linsenhalter (28) und die Projektionslinse (26) aus demselben Kunststoff gefertigt sind.Lens holder (28) and the projection lens (26) are made of the same plastic.
6. Beleuchtungseinrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Projektionslinse (26) über den integralen Linsenhalter (28) an dem Träger (27) des Leuchtmittels befestigt ist. 6. Lighting device according to one of claims 1 to 5, characterized in that the projection lens (26) via the integral lens holder (28) on the support (27) of the illuminant is attached.
7. Beleuchtungseinrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Projektionslinse (26) über den integralen Linsenhalter (28) an dem Reflektor befestigt ist. 7. Lighting device according to one of claims 1 to 5, characterized in that the projection lens (26) via the integral lens holder (28) is attached to the reflector.
PCT/EP2008/010381 2008-01-15 2008-12-06 Illuminating device of a vehicle WO2009089873A1 (en)

Applications Claiming Priority (2)

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DE102008004354.0 2008-01-15
DE102008004354A DE102008004354A1 (en) 2008-01-15 2008-01-15 Lighting device of a vehicle

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WO2009089873A1 true WO2009089873A1 (en) 2009-07-23

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19621254A1 (en) * 1996-05-25 1997-11-27 Bosch Gmbh Robert Vehicle headlamp
US20070133220A1 (en) * 2005-12-08 2007-06-14 Koito Manufacturing Co., Ltd. Vehicle lighting device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007207641A (en) * 2006-02-03 2007-08-16 Stanley Electric Co Ltd Vehicle lamp
AT503580B1 (en) * 2006-05-17 2007-11-15 Zizala Lichtsysteme Gmbh SUPPLY OPTICS SYSTEM FOR A LED LIGHT UNIT FOR MOTOR VEHICLES

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19621254A1 (en) * 1996-05-25 1997-11-27 Bosch Gmbh Robert Vehicle headlamp
US20070133220A1 (en) * 2005-12-08 2007-06-14 Koito Manufacturing Co., Ltd. Vehicle lighting device

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