WO2006052022A1 - Installation d’eclairage et dispositif d’eclairage automobile - Google Patents

Installation d’eclairage et dispositif d’eclairage automobile Download PDF

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Publication number
WO2006052022A1
WO2006052022A1 PCT/JP2005/021186 JP2005021186W WO2006052022A1 WO 2006052022 A1 WO2006052022 A1 WO 2006052022A1 JP 2005021186 W JP2005021186 W JP 2005021186W WO 2006052022 A1 WO2006052022 A1 WO 2006052022A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat
housing
recited
heat pipe
lighting device
Prior art date
Application number
PCT/JP2005/021186
Other languages
English (en)
Inventor
Nobuhiro Wakabayashi
Shinobu Yamauchi
Original Assignee
Showa Denko K.K.
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 Showa Denko K.K. filed Critical Showa Denko K.K.
Publication of WO2006052022A1 publication Critical patent/WO2006052022A1/fr

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
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • F21S45/48—Passive cooling, e.g. using fins, thermal conductive elements or openings with means for conducting heat from the inside to the outside of the lighting devices, e.g. with fins on the outer surface of the lighting device
    • 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
    • F21S41/145—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device the main emission direction of the LED being opposite to the main emission direction of the illuminating device
    • 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
    • F21S41/10—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
    • F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/51—Cooling arrangements using condensation or evaporation of a fluid, e.g. heat pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • 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]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S362/00—Illumination
    • Y10S362/80—Light emitting diode

Definitions

  • the present invention relates to, inter alia, an automotive lighting fixture using an LED as a light source and a lighting device.
  • an incandescent lamp, a halogen lamp, an HID (high-intensity discharge) lamp, etc. have been widely used.
  • an automotive headlight equipped with an LED (light-emitting diode) high in performance, e.g. , high in power saving, long in operating life has been brought to attention as a light source.
  • An automotive headlight consumes a large current to attain sufficient light flux, which causes generation of a large amount of heat from the light source.
  • an LED is low in operating temperaturelimitandnarrowinoperatingtemperaturerange.
  • a thermal management is an important factor to avoid the use at a high temperature range.
  • Patent Document 1 proposes thefollowingcoolingdeviceforanautomotiveheadlight.
  • the cooling device for an automotive headlight is provided with a heat sink arranged at the outside of a housing and a straight heat pipe connecting an LED light source arranged in the housing and the heat sink, so that the heat generated from the LED light source is transferred the outside of the housing via the straight heat pipe to release the heat via the heat sink.
  • the leasing of the heat outside the housing prevents accumulation of the heat around the LED in the housing to thereby avoid adverse effects due to the high temperature.
  • Thecoolingdeviceforanautomotiveheadlight showninPatent Document 1 may sometimes cause a deterioration of flowability of working fluid (heat transfer medium) sealed in the heat pipe when the heat pipe becomes horizontal in accordance with the inclination of the vehicle since the cooling device employs a straight heat pipe. This in turns causes insufficient heat release performance, thereby resulting in deteriorated cooling performance.
  • an automotive headlight using an LED as a light source is normally provided with a plurality of LEDs to attain sufficient light flux.
  • a desired thermal management cannot be performed due to, for example, uneven cooling of the LEDs or a shortcut of the heat pipe such as insufficient flow of the working fluid to the ends of the heat pipe. This also causes a deterioration of the cooling performance.
  • the preferred embodiments of the present invention have been developed in view of the above-mentioned and/or other problems in the related art.
  • the preferred embodiments of the present invention can significantly improve upon existing methods and/or apparatuses.
  • some embodiments can provide a lighting device equipped with an LED as a light source capable of solving the aforementioned problems and improving the cooling performance.
  • some embodiments can provide an automotive lighting fixture using the lighting device.
  • some embodiments of the present invention have the following structures.
  • a lighting device in which an LED as a light source is disposed in a housing, characterized in that the lighting device is provided with a loop-type heat pipe havingaheatreceivingportionandaheatreleasingportion, wherein the heat pipe is disposed such that the heat receiving portion is thermally connected to the light source and the heat releasing portionis thermallyconnectedtoaportionofthehousingpositioned higher than the receiving portion, and wherein a connecting portion of the housing to which the heat releasing portion of the heat pipe is connected constitutes a heat releasing plate.
  • a lighting device in which an LED as a light source is disposed in a housing, characterized in that the lighting device is provided with a loop-type heat pipe havingaheatreceivingportionandaheatreleasingportion, wherein the heat pipe is disposed such that the heat receiving portion is thermally connected to the light source and the heat releasing portion is positioned outside the housing so as to be positioned higher than the receiving portion, and wherein a heat releasing plate is attached to the heat releasing portion of the heat pipe.
  • a cooling apparatus for use in a lighting device in which a light source comprising an LED is disposed in a housing, the cooling apparatus comprising: a loop-type heat pipe having a heat receiving portion and aheatreleasingportion, theheatreceivingportionbeingthermally connected to the light source and the heat releasing portion being thermally connected to a portion of the housing positioned higher than the receiving portion; and a heat releasing plate provided at a connecting portion of the housing to which the heat releasing portion of the heat pipe is connected.
  • a cooling apparatus for use in a lighting device in which a light source comprising an LED is disposed in a housing, the cooling apparatus comprising: a loop-type heat pipe having a heat receiving portion and aheatreleasingportion, theheatreceivingportionbeingthermally connected to the light source and the heat releasing portion being position outside the housing so as to be positioned higher than the receiving portion; and a heat releasing plate provided at a connecting portion of the heat housing to which the releasing portion of the heat pipe is connected.
  • a method of cooling a lighting fixture in which a light source comprising an LED is disposed in a housing characterized in that aheat receivingportion of a loop-typeheat pipe is thermally connected to the light source and the heat releasing portion of the loop-type heat pipe is thermally connected to a portion of the housing positioned higher than the receiving portion, whereby heat of the heat releasing portion of the heat pipe is release by the connecting portion of the housing towhich theheat releasing portion of the heat pipe is connected.
  • a method of cooling a lighting fixture in which a light source comprising an LED is disposed in a housing, characterized in that aheat receiving portion of a loop-typeheat pipe is thermally connected to the light source and the heat releasing portion of the loop-type heat pipe is positioned outside the housing so as to be positioned higher than the receiving portion, whereby heat of the heat releasing portion of the heat pipe is release via a heat releasing plate attached to a heat releasing portion of the heat pipe.
  • the heat generated from each LED can be absorbed evenly, enabling all of the LEDs to be cooled evenly, resulting in further enhanced cooling performance.
  • the number of parts can be decreased.
  • the number of parts can be decreased.
  • the cooling performance can be further improved.
  • the irradiation direction can be changed freely.
  • the cooling performance can be further improved.
  • an automotive headlight having the same effects as mentioned above can be provided.
  • Fig. 1 is a cross-sectional view showing an automotive headlight according to an embodiment of the present invention
  • Fig. 2 is a schematic view showing a cooling device applied to the automotive headlight of the first embodiment
  • Fig. 3 is a top view showing the cooling device of the first embodiment
  • Fig. 4 is a cross-sectional view showing the connecting portion of the heat pipe and the heat releasing plate of the cooling device of the first embodiment
  • Fig. 5 is a cross-sectional view showing an automotive headlight accordingtoasecondembodiment of thepresentinvention.
  • Fig. 6 is a cross-sectional view showing an automotive headlight according to a thirdembodiment of the present invention. Best Mode for Carrying Out the Invention
  • Fig. 1 is a cross-sectional view showing an automotive headlight according to a first embodiment of the present invention.
  • Fig. 2 is a schematic view showing a cooling device applied to the automotive headlight, and
  • Fig. 3 is a top view showing the cooling device.
  • the automotive headlight of this embodiment is provided, as basic structuralelements, withahousing 10, a plurality of LEDs 21 as light sources, an LED mounting block 20 as a light source mounting member, a heat pipe 30 and a heat sink 40 as a cooling device.
  • the housing 10 is made of synthetic resin or metal such as aluminum (including aluminum alloy) . Attached to the front side of the housing 10 is a translucent colorless or colored lens 11. At theupperportionof therearwall of thehousing 10, arectangular base plate fitting opening 15 is formed.
  • the LED mounting block 20 is formed of a horizontally long rectangular shape andmade ofmetalwith goodheat transferproperty such as copper. At the one side (rear side) of this block 20, a plurality of LEDs 21 are arranged at certain intervals along its longitudinal direction (lateral direction).
  • the heat sink 40 is composed of a base plate 41 as a heat releasing plate and a number of heat releasing fins 42 attached to one surface side (external surface side) of the base plate 41.
  • the base plate 41 is an extruded article or a forged article of aluminum or the like having a rectangular shape and size capable of being fitted in the base plate fitting opening 15 formed in the housing 10.
  • the heat releasing fins 42 can be formed integrallywithor separatelyfromthe baseplate 41. Furthermore, the heat releasing fin 42 is not limited to a plane fine but can be any type of fin, such as, e.g., a slit fin, an offset fin or a pin fin.
  • the heat sink 40 is fixed to the housing 10 with the base plate 41 fittedin thebaseplate fittingopening 15. In this state, theheat releasingfins 42 are disposedat theoutside of thehousing 10. On the inner side of the base plate 41, a heat pipe fixing groove 43 is formed along the lateral direction of the base plate.
  • Theheatpipe30 isanaluminumpipehavinganexternaldiameter of 10 mm.
  • This heat pipe 30 is bent into a horizontally long oval loop shape with two straight portions 31 and 32 arrangedin parallel with each other and semicircular shaped bent portions 33 and 33 connecting both ends of the straight portions 31 and 32.
  • the lower side straight portion 31 of the heat pipe 30 constitutes a heat receiving portion (evaporating portion) and the upper side portion 32 thereof constitutes a heat releasing portion (condensing portion) .
  • working fluid such as Freon is enclosed at the rate of 20 to 50% of the inner volume of the heat pipe 30.
  • the liquid phase working fluid evaporates in the heat receiving portion 31 to absorb the heat, and the evaporated gaseous phase working fluid reaches the heat releasing portion 32 via both the bent portions 33 and 33. Then, the gaseous phase working fluid condenses into a condensed liquid phase working fluid to thereby release the heat at the heat releasing portion 32.
  • the heat pipe 30 can have wicks therein to enhance the circulation of the liquid phase working fluid.
  • the straight heat releasing portion 32 of the heat pipe 30 is brazed to the base plate 41 using heat transfer compounds or soldering materials in a thermally connected state with the heat releasing portion 32 fitted in the heat pipe fixing groove 43 of the base plate 41 constituting the heat sink 40.
  • the straight heat releasing portion 32 of the heat pipe 30 is attached to the base plate 41 in an embedded state.
  • the heat pipe 30 is disposed in a ba ⁇ kwardly inclined manner such that the straight heat receiving portion 31 is positioned at about the central portion of the housing 10 while the straight heat releasing portion 32 is positioned at an upper portion of the rear wall of the housing 10.
  • the straight heat receiving portion 31 of the heat pipe 30 is disposed in the LED mounting block 20 in a manner such that the heat receiving portion 31 penetrates the block 20 along the longitudinaldirection (widthwisedirection) oftheblock20.
  • the straightheatreceivingportion31oftheheatpipe30 is attached to the LED mounting block 20 in an embedded manner.
  • the plurality of LEDs 21 mounted to the block 20 are arranged at regular intervals along the tubular portion of the heat receiving portion 31 with the LEDs facing rearward.
  • a reflector 16 is arranged to reflect the irradiating light L from the LEDs 21 when the LEDs 21 are turned on, so that the light L is irradiated forward passing through the lens 21.
  • the LED mounting block 20 is movably attached to the heat receiving portion 31 of the heat pipe 30 in a thermally connected manner via lubricant agent with heat conductivitysuchas, e.g., heattransfergrease.
  • the installation angle of the LED mounting block 20 can be adjusted by a light source adjusting mechanism (not illustrated) so that the irradiation direction of the LEDs 21 can be adjusted.
  • the heat generated from the lighted LEDs causes evaporation of the working fluid in the heat pipe 30 to be absorbed by the heat receiving portion 31 of the heat pipe 30 via the LED mounting block 20.
  • the working fluid vaporized by absorbing heat at the heat receiving portion 31 reaches the heat releasing portion 32 via the bent portions 33 and 33, and then condensed by releasing the heat.
  • the heat of the LEDs 21 transferred to the heat releasing portion 32 of theheat pipe 30 asmentionedabove is releasedoutside of the housing 10 via the base plate 41 and the heat releasing fins 42 of the heat sink 40. Accordingly, it becomes possible to avoid accumulation of the heat generated from the LEDs 21 thereraround, securing good cooling performance, which enables anoperationof theLEDunderanappropriatetemperatureenvironment within a low temperature region.
  • this embodiment employs a loop-type heat pipe
  • a plurality of LEDs 21 are arrangedalongthestraightheatreceivingportion 31, whichenables the heat receiving portion 31 to absorb the heat generated from each LED 21 evenly.
  • all of the LEDs 21 can be cooled evenly in a balanced manner.
  • Fig. 5 is a cross-sectional drawing showing an automotive headlight according to a second embodiment of this invention. As showninthisfigure, inthisautomotiveheadlightofthisembodiment, a part 12 of the housing 10 constitutes a base plate 41 of a heat sink 40.
  • this housing 10 is made of metal high in thermal conductivity such as aluminum, and a part 12 of the upper rear wall is constituted as the base plate 41.
  • a number of heat releasing fins 42 made of metal high in thermal conductivity such as aluminum are formed on the external surface of this base plate 41.
  • Theheat releasingfin 42 canbe formedintegrallywithorseparately from the housing 10 in the same manner as in the aforementioned embodiment.
  • a heat pipe fitting groove 43 is formed along the lateral direction. In this groove 43, aheat releasingportion 32 of theheat pipe 30 is secured.
  • the present invention allows utilization of the entire region of the housing as a base plate.
  • Fig. 6 is a cross-sectional drawing showing an automotive headlight according to a third embodiment of this invention. As showninthis figure, intheautomotiveheadlightofthis embodiment, the base plate 41 of the heat sink 40 is disposed at the outside of the housing 10.
  • both the bent portions 33 and 33 of the heat pipe 30 are penetrated through the upper portion of the rear wall of the housing 10, so that the heat releasing portion 32 is disposed outside the housing 10.
  • the heat releasing portion 32 is fixed to the rear side of the base plate 41 of the heat sink 40.
  • the heat sink 40 can also be placed at any desired position, which increases the design flexibility and the versatility.
  • the lighting device and an automotive lighting fixture using thelightingdeviceaccordingtothepresent invention canbeapplied to, e.g., an automotive headlight.

Abstract

Dans certains modes de réalisation, un dispositif d’éclairage dans lequel une DEL 21 à titre de source lumineuse est disposée dans un boîtier 10 avec une partie translucide 11, est pourvu d’un caloduc de type boucle 30 ayant une partie de réception de chaleur 31 et une partie de dégagement de chaleur 32. Le caloduc 30 est disposé de telle sorte que la partie de réception de chaleur 31 est connectée thermiquement à la source lumineuse 21 et la partie de dégagement de chaleur 32 est connectée thermiquement à une partie du boîtier positionnée plus haut que la partie de réception 31. La partie de connexion du boîtier 10 à laquelle la partie de dégagement de chaleur 32 du caloduc est connectée constitue une plaque de dégagement de chaleur 41. Cette structure peut améliorer les performances de refroidissement.
PCT/JP2005/021186 2004-11-12 2005-11-11 Installation d’eclairage et dispositif d’eclairage automobile WO2006052022A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2004-329279 2004-11-12
JP2004329279 2004-11-12
US62854604P 2004-11-18 2004-11-18
US60/628,546 2004-11-18

Publications (1)

Publication Number Publication Date
WO2006052022A1 true WO2006052022A1 (fr) 2006-05-18

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PCT/JP2005/021186 WO2006052022A1 (fr) 2004-11-12 2005-11-11 Installation d’eclairage et dispositif d’eclairage automobile

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007087791A1 (fr) * 2006-02-01 2007-08-09 Osram Gesellschaft mit beschränkter Haftung Phare de véhicule à moteur
EP1881262A1 (fr) * 2006-07-21 2008-01-23 Valeo Vision Dispositif d'éclairage à diodes électroluminescentes équipé d'un système de refroidissement extérieur
WO2007146562A3 (fr) * 2006-06-08 2008-04-03 Lighting Science Group Corp Procédé et appareil de refroidissement d'une ampoule d'éclairage
EP1970622A1 (fr) * 2007-03-15 2008-09-17 Valeo Vision Dispositif d'éclairage et/ou de signalisation pour véhicule automobile comprenant une paroi externe pourvue d'une zone d'échange thermique
WO2009024133A1 (fr) * 2007-08-17 2009-02-26 Osram Gesellschaft mit beschränkter Haftung Dispositif de refroidissement et appareil d'éclairage
DE102007055165A1 (de) * 2007-11-19 2009-05-20 Osram Gesellschaft mit beschränkter Haftung LED-Scheinwerfer
EP2098778A1 (fr) * 2006-12-30 2009-09-09 Jen-Shyan Chen Dispositif d'éclairage à diodes électroluminescentes
EP2159486A1 (fr) 2008-09-01 2010-03-03 Valeo Vision Dispositif d'éclairage et/ou de signalisation de véhicule automobile comprenant un caloduc
WO2012171734A1 (fr) * 2011-06-17 2012-12-20 Osram Ag Structure de dissipation de chaleur et système d'éclairage présentant la structure
US8342728B2 (en) 2008-01-14 2013-01-01 Osram Gmbh Arrangement for cooling semiconductor light sources and floodlight having this arrangement
US8419250B2 (en) 2008-01-17 2013-04-16 Mitsubishi Electric Corporation Vehicle headlamp
EP2860440A1 (fr) * 2013-10-09 2015-04-15 Fujikura Ltd. Dispositif de refroidissement pour un phare de véhicule
EP2924341A1 (fr) * 2014-03-26 2015-09-30 Fujikura Ltd. Structure de dégivrage pour phares de véhicule
EP3273148A1 (fr) * 2016-07-22 2018-01-24 Valeo Vision Projecteur de lumiere de vehicule
DE102018101988A1 (de) * 2018-01-30 2019-08-01 HELLA GmbH & Co. KGaA Scheinwerfer für ein Fahrzeug mit einer Kühleinrichtung für ein Halbleiterleuchtmittel
DE102020128555A1 (de) 2020-10-30 2022-05-05 Bayerische Motoren Werke Aktiengesellschaft Beleuchtungsvorrichtung für ein Kraftfahrzeug

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JP2004127782A (ja) * 2002-10-04 2004-04-22 Ichikoh Ind Ltd 車両用灯具および灯火装置
JP2004311224A (ja) * 2003-04-08 2004-11-04 Koito Mfg Co Ltd 車両用前照灯

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JP2003317527A (ja) * 2002-04-23 2003-11-07 Nichia Chem Ind Ltd 照明装置
JP2004127782A (ja) * 2002-10-04 2004-04-22 Ichikoh Ind Ltd 車両用灯具および灯火装置
JP2004311224A (ja) * 2003-04-08 2004-11-04 Koito Mfg Co Ltd 車両用前照灯

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007087791A1 (fr) * 2006-02-01 2007-08-09 Osram Gesellschaft mit beschränkter Haftung Phare de véhicule à moteur
WO2007146562A3 (fr) * 2006-06-08 2008-04-03 Lighting Science Group Corp Procédé et appareil de refroidissement d'une ampoule d'éclairage
US7824075B2 (en) 2006-06-08 2010-11-02 Lighting Science Group Corporation Method and apparatus for cooling a lightbulb
EP1881262A1 (fr) * 2006-07-21 2008-01-23 Valeo Vision Dispositif d'éclairage à diodes électroluminescentes équipé d'un système de refroidissement extérieur
FR2904094A1 (fr) * 2006-07-21 2008-01-25 Valeo Vision Sa Dispositif d'eclairage a diodes electroluminescentes equipe d'un systeme de refroidissement exterieur.
EP2098778A4 (fr) * 2006-12-30 2012-03-07 Neobulb Technologies Inc Dispositif d'éclairage à diodes électroluminescentes
EP2098778A1 (fr) * 2006-12-30 2009-09-09 Jen-Shyan Chen Dispositif d'éclairage à diodes électroluminescentes
US7736041B2 (en) 2007-03-15 2010-06-15 Valeo Vision Lighting and/or signalling device for a motor vehicle comprising an outer wall provided with a heat exchange zone
EP1970622A1 (fr) * 2007-03-15 2008-09-17 Valeo Vision Dispositif d'éclairage et/ou de signalisation pour véhicule automobile comprenant une paroi externe pourvue d'une zone d'échange thermique
FR2913751A1 (fr) * 2007-03-15 2008-09-19 Valeo Vision Sa Dispositif d'eclairage et/ou de signalisation pour vehicule automobile comprenant une paroi externe pourvue d'une zone d'eclairage thermique.
WO2009024133A1 (fr) * 2007-08-17 2009-02-26 Osram Gesellschaft mit beschränkter Haftung Dispositif de refroidissement et appareil d'éclairage
DE102007055165A1 (de) * 2007-11-19 2009-05-20 Osram Gesellschaft mit beschränkter Haftung LED-Scheinwerfer
CN101868671A (zh) * 2007-11-19 2010-10-20 奥斯兰姆有限公司 Led前照灯
WO2009065548A1 (fr) 2007-11-19 2009-05-28 Osram Gesellschaft mit beschränkter Haftung Projecteur à del
US8342728B2 (en) 2008-01-14 2013-01-01 Osram Gmbh Arrangement for cooling semiconductor light sources and floodlight having this arrangement
US8419250B2 (en) 2008-01-17 2013-04-16 Mitsubishi Electric Corporation Vehicle headlamp
EP2159486A1 (fr) 2008-09-01 2010-03-03 Valeo Vision Dispositif d'éclairage et/ou de signalisation de véhicule automobile comprenant un caloduc
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CN111656090A (zh) * 2018-01-30 2020-09-11 海拉有限双合股份公司 带有用于半导体照明机构的冷却装置的用于车辆的前照灯
US11268674B2 (en) 2018-01-30 2022-03-08 HELLA GmbH & Co. KGaA Headlight for a vehicle with a cooling device for a semiconductor illuminant
CN111656090B (zh) * 2018-01-30 2022-07-12 海拉有限双合股份公司 带有用于半导体照明机构的冷却装置的用于车辆的前照灯
DE102020128555A1 (de) 2020-10-30 2022-05-05 Bayerische Motoren Werke Aktiengesellschaft Beleuchtungsvorrichtung für ein Kraftfahrzeug

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