EP1970622A1 - Beleuchtungs- und/oder Signalisierungsvorrichtung für Kraftfahrzeug, die eine Außenwand mit Wärmeaustauschzone umfasst - Google Patents

Beleuchtungs- und/oder Signalisierungsvorrichtung für Kraftfahrzeug, die eine Außenwand mit Wärmeaustauschzone umfasst Download PDF

Info

Publication number
EP1970622A1
EP1970622A1 EP08152352A EP08152352A EP1970622A1 EP 1970622 A1 EP1970622 A1 EP 1970622A1 EP 08152352 A EP08152352 A EP 08152352A EP 08152352 A EP08152352 A EP 08152352A EP 1970622 A1 EP1970622 A1 EP 1970622A1
Authority
EP
European Patent Office
Prior art keywords
vehicle
lighting
heat exchange
exchange zone
heat
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.)
Withdrawn
Application number
EP08152352A
Other languages
English (en)
French (fr)
Inventor
Guillaume Tronquet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Vision SAS
Original Assignee
Valeo Vision SAS
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 Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP1970622A1 publication Critical patent/EP1970622A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • F21V29/15—Thermal insulation
    • 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
    • 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
    • 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
    • F21S45/42—Forced cooling
    • F21S45/43—Forced cooling using gas
    • 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
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/503—Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
    • 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
    • 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
    • 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
    • F21V29/763—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 the planes containing the fins or blades having the direction of the light emitting axis
    • 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
    • F21S45/42—Forced cooling
    • 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
    • F21S45/42—Forced cooling
    • F21S45/46—Forced cooling using liquid
    • 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
    • F21S45/50—Waterproofing
    • 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 and / or signaling device comprising means for evacuating the heat produced by the light source or sources of the device. More particularly, the invention relates to a lighting and / or signaling device for a motor vehicle comprising a chamber inside which is disposed at least one light source, the chamber comprising an outer wall provided with a zone of heat exchange to transfer heat from the inside to the outside of the chamber. The invention also relates to a vehicle equipped with such a device, and a method for manufacturing a housing adapted to the present invention.
  • heat exchange zone of the outer wall is meant an area that will exchange the heat from the inside to the outside of the chamber, in a preferred manner with respect to other areas of the outer wall that have not been defined as heat exchange areas.
  • a zone of the outer wall made of a thermally conductive material or a heat exchanger included by the wall constitutes a heat exchange zone.
  • the present invention is of particular interest in the case of lighting and / or signaling device comprising light-emitting diodes, or LEDs, more particularly in the case of projectors using power LEDs.
  • the LED consumes less electrical energy, even at equal light intensity, than a discharge or incandescent lamp, which are traditionally used in the automotive field.
  • the LED does not radiate omnidirectionally, but radiates more directionally than the discharge lamp. Thus, the amount of light lost, and therefore of electrical energy, is lower.
  • LEDs are also compact and can be arranged in much more confined spaces, and their particular shape offers new possibilities for the realization and arrangement of complex surfaces associated with them.
  • the LEDs used are power LEDs.
  • the expression "power LED” denotes a light-emitting diode whose luminous flux is of the order of at least 30 lumens.
  • a power LED produces heat.
  • the heating of the LED is detrimental to its operation, because the more the diode rises in temperature, the more its luminous flux decreases.
  • the possibilities of heat dissipation are very limited and the temperature inside the projector can rise very quickly.
  • LEDs do not withstand temperatures as high as those supported by discharge lamps or halogen lamps. More particularly, the LEDs have a maximum junction temperature of between 125 degrees Celsius (° C) and 150 ° C, beyond which the LEDs not only have a decrease in efficiency but also a risk of rupture.
  • the heat produced by the diodes is not produced by its beam, which does not contain infrared radiation (We speak of cold light). This heat is however produced at the level of the LED itself.
  • the LED has a metal heat dissipation base, often called "slug", allowing to establish thermal contact with a heat sink, such as a radiator, to dissipate the heat generated by the LED.
  • a heat sink such as a radiator
  • Such a dissipator is notably described in the application EP-A-1139019 .
  • the heat sink dissipates heat at the LED but inside the projector, whose internal temperature will increase.
  • the heat is difficult to remove from the projector especially because it is in contact with the engine compartment which is a hot source, often between 70 ° C and 80 ° C during operation of the vehicle.
  • the engine compartment which is a hot source
  • the external temperature of the vehicle is 40 ° C
  • the temperature in the engine compartment being about 70 ° C
  • a temperature of 90 ° C is easily reached inside the projector. It therefore becomes much more difficult with the heat sink alone to dissipate heat at the LED, so that it does not reach its maximum temperature junction.
  • the document US2006 / 0076572 describes, and illustrates in its fourth figure, a projector inside which is disposed a diode mounted on a heat sink.
  • a heat exchanger is disposed at the bottom of the projector housing, on the wall of this housing. By difference in thermal gradient, the heat dissipated by the heat sink is transferred through the space of the housing to the heat exchanger, which transmits this heat outside the housing.
  • a fan for circulating the air between the heat sink and the heat exchanger.
  • Another solution, illustrated in the sixth of US2006 / 0076572 consists of directly connecting the housing to the heat sink on which the LED is mounted.
  • the heat sink is directly connected to a thermal conductor, which thus conducts heat to one of the portions of the thermal conductor forming one with a portion of the housing wall.
  • these embodiments do not make it possible to effectively lower the temperature below a certain temperature. Indeed the heat exchange between the inside and outside of the projector is at the housing and in particular the engine compartment.
  • the patent application US2006 / 0181894 discloses a projector whose housing is traversed through by a cooling duct inside which circulates air from outside the vehicle. Fines disposed on the conduit, within the chamber defined by the housing closed by the outer ice, allow the heat inside the chamber to be discharged through the conduit.
  • the structure of such a projector is complex and creates, at the wall of the housing, additional holes to be sealed.
  • the patent application DE10258623 discloses a projector in which the projector housing is thermally insulated.
  • the wall of the housing consists of two walls separated by an insulating space and sealed together at their ends, thus forming a closed cavity.
  • a thermally conductive member is disposed in the bottom of the housing and inside the chamber formed by the housing and the ice. It extends from the light source in the vicinity of the ice, thus heating the air near the bottom of the vehicle ice. This air being warmer, it will rise inside the chamber, along the wall of the ice and thus be cooled.
  • This type of projector allows positioning at the engine compartment while isolating the motor housing.
  • the object of the present invention is therefore the realization of a simpler device in its implementation and in its structure and little dependent on the constraints related to the structure of the vehicle.
  • the conduit may not be part of the lighting and / or signaling device but be part of the vehicle. It can also be achieved by mounting the housing of the device at a distance from a wall inside the vehicle, for example by connecting the housing to this wall by means of spacers, or by fixing the housing to the vehicle in places where the leads do not pass.
  • the duct is connected to an outside air intake of the vehicle, allowing the air outside the vehicle to circulate inside said duct, when the vehicle moves;
  • the air intake is an air intake of the existing vehicle, thus allowing not to affect the style of the vehicle;
  • the air intake is located at an entrance located sufficiently low in the front of the vehicle, particularly at the shield. This is particularly useful when the style of the vehicle would not allow air to enter through a hole under the projector glass. This is particularly the case of projectors very curved and placed very high on the wing of the vehicle. Indeed, the profile these last projectors behaves like that of an airplane wing and it is impossible to have an overpressure at the level of edges of the vehicle ice. An air intake at this location would be very inefficient.
  • the entry of the duct preferably has a section approximately equal to that of the air outlet of this duct.
  • thermally conductive material is meant in the present application a material having a satisfactory dissipation power, sufficient to evacuate all the calories produced by the light source or sources.
  • the figure 1 represents a front vehicle headlamp, whose bodywork, 8 and 9, is very partially represented.
  • the projector comprises a housing 5, closed by a window 2, the wall of the housing 5 and the window 2 constituting the outer wall of a closed chamber 1.
  • a power-emitting diode 10, or power LED, is disposed at the Inside of this chamber 1.
  • the LED 10 is in contact with a heat sink 12, dissipating the heat emitted at the LED 10 inside the chamber 1.
  • the representation being diagrammatic, the support means of the LED 10 in the projector and the circuit board to which it is attached are not shown.
  • the wall of the housing 5 incorporates a heat exchanger 16 provided with fins 17 extending outside the chamber 1 and inside a conduit 20.
  • This conduit comprises an air inlet 22, positioned under the housing 5, and an air outlet 23.
  • the air will rush inside the conduit 20 through the inlet 22, and out at the outlet 23 of the conduit; the heat dissipated inside the chamber 1 is transferred from the inside of the chamber to the outside of the chamber by the heat exchanger 16; the flow of air on the fins 17 will evacuate the heat released by the heat exchanger 16.
  • the conduit 20 can lead directly into the engine compartment, the outlet 23 is preferably connected to an air duct directly leading to the duct air to an air outlet, not shown, of the vehicle body.
  • the conduit is integrated into the projector.
  • part of the inner wall of the duct 20 is constituted by a portion 15, 16 and 14 of the outer wall of the casing 5
  • a portion 26 of the inner wall of the duct is constituted by a body member, the space between the portion 26 and the portion 15, 16 and 14, constituting the inside of the duct. It is also possible, in a mode not shown, to make a conduit that is part of the vehicle and is in contact with the heat exchanger of the projector housing.
  • the part of the housing 5 which is not in contact with the air flowing inside the conduit 20 is insulating, to avoid the heat exchange between the chamber 1 and the inside of the vehicle body, where the temperature is high.
  • this part is insulating because it consists of a double wall, that is to say of two walls 5a and 5b joined at their ends but whose edges are separated by a space, so that the walls 5a and 5b form a sealed cavity 4.
  • the cavity 4 can be filled with air, or any suitable gas, under or overpressure, or at a pressure whose order of magnitude corresponds to that of the atmospheric pressure. It can also be filled with any thermally insulating material or liquid.
  • One or other of these walls may also be covered with an insulating material arranged by flocking or an insulating paint. According to an alternative embodiment not shown, it is also possible to have a simple wall treated with such a coating. The production of a double wall is preferred.
  • the portion 15 of the housing, from the bottom of the ice to the heat exchanger 16, and the portion of the housing 14, from the heat exchanger 16 to the air outlet 23, are in contact with the circulating air in the conduit and are, preferably, non-insulating single walls.
  • the projector carries out a lighting function by means of four power LEDs, 10, 11, 13 and 19.
  • the choice of the number of LEDs is done simply according to the intensity of the luminous flux generated by the LEDs used and of the flux intensity necessary to obtain the desired lighting function.
  • the device according to the present invention is sufficiently effective to evacuate the heat generated by these LEDs.
  • FIGS. 3a to 3c represent variants of this first embodiment where the inlet 22 and the outlet 23 of the air duct are positioned at different locations.
  • the figure 3a differs slightly from the representation of the figure 1 , by the positioning of the output 23 at the bottom of the projector.
  • the entry of the conduit 20 is not disposed just under the window 2 but lower, inside the front bumper 8 of the vehicle.
  • the part of the housing from the bottom of the ice to the heat exchanger is made of a double wall.
  • this type of implementation can allow air to enter more easily inside the duct. This also makes it possible to ignore the air intake in the design of the ice style.
  • the parts being in contact with the air flowing in the conduit, 15 and 14 in figure 3a , and 14 in figure 3c are not insulating.
  • the parts of the wall of the housing 5 directly in contact with the interior of the vehicle are however constituted by a double wall.
  • the figure 3b differs from other variants in that the conduit 20 is all around the housing 5.
  • the duct is provided with two air inlets 21 and 22, at the top and bottom of the window 2, and an air outlet 23 opening into the engine compartment or connected to an air outlet, not shown, disposed on the vehicle body. Therefore, it is not necessary to isolate the housing 5, since its entire wall, 15,16 and 14, is in contact with the air flowing in the conduit.
  • a thermal conductor 30 directly connects the heat sink 12 of the LED 10 to the heat exchanger 16.
  • This thermal conductor 30 may be any thermal conductive material. It is also possible to use instead of the thermal conductor a heat pipe or a Peltier element.
  • Peltier element is meant an element using the Peltier effect, or thermoelectric effect. This Peltier element is composed of semiconductor materials having good thermoelectric properties and arranged in pairs between two walls of such so that when an electric current goes through them, a heat flow is created between the two walls.
  • the Peltier element not shown, is disposed between the heat sink and the heat exchanger so as to serve as a heat pump.
  • the projector represented in Figures 1 to 4 has an ice surface smaller than the surface of the housing. Therefore, the evacuation of heat by the ice will not be sufficient in case of high temperature outside the vehicle (eg 40 ° C).
  • the present invention makes it possible, by evacuation of the heat by circulation of air at a heat exchanger, as shown, to have an efficient evacuation of the heat generated inside the chamber 1, 101, even with a small area of ice.
  • the efficiency of this embodiment will allow to lower the temperature inside the housing by at least 10 to 20 ° C and thus use heat exchangers 16, 116, single extruded metal or aluminum extruded, less expensive than copper.
  • a variant of the projector represented in figure 3b where the walls of the duct located opposite the walls 14, 15, 16 of said chamber are isolated. It is also possible to isolate both the walls of the chamber, excluding, of course, the heat exchangers 16, and the walls separating the interior of the duct from the rest of the vehicle (ie the inside of the vehicle). outside the projector, when the duct is integrated in the projector, or outside the housing receiving the projector, when the conduit is constituted by the space between the outer wall of the housing and the housing provided in the body to place the projector).
  • the housing 105 of the projector incorporates a heat exchanger 116, directly in contact with a conduit 120 which is connected to the cooling system 140 of the vehicle.
  • the rest of the housing wall is insulating and consists of a double wall.
  • the double wall 114, 115, is made according to the same principle as previously described.
  • the housing 105 is closed by a mirror 102, thereby defining a chamber 101 within which the LED 110 is disposed.
  • the heat generated by the LED 110 is dissipated by a heat sink 112, on which the LED 110 is mounted. This heat diffuses inside the chamber 101 and is transferred to the outside of this chamber 101 by the heat exchanger. 116.
  • the heat is then evacuated by the liquid of the cooling system 140 of the vehicle.
  • Embodiments of the present invention are not limited to the examples cited above.
  • the present invention could be applied to signaling systems provided with LEDs or also to lighting and / or signaling devices whose light sources are in particular incandescent lamps, discharge lamps or halogen lamps.

Landscapes

  • 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)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
EP08152352A 2007-03-15 2008-03-06 Beleuchtungs- und/oder Signalisierungsvorrichtung für Kraftfahrzeug, die eine Außenwand mit Wärmeaustauschzone umfasst Withdrawn EP1970622A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0701879A FR2913751A1 (fr) 2007-03-15 2007-03-15 Dispositif d'eclairage et/ou de signalisation pour vehicule automobile comprenant une paroi externe pourvue d'une zone d'eclairage thermique.

Publications (1)

Publication Number Publication Date
EP1970622A1 true EP1970622A1 (de) 2008-09-17

Family

ID=38543745

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08152352A Withdrawn EP1970622A1 (de) 2007-03-15 2008-03-06 Beleuchtungs- und/oder Signalisierungsvorrichtung für Kraftfahrzeug, die eine Außenwand mit Wärmeaustauschzone umfasst

Country Status (4)

Country Link
US (1) US7736041B2 (de)
EP (1) EP1970622A1 (de)
JP (1) JP2008226843A (de)
FR (1) FR2913751A1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102114495A (zh) * 2010-11-25 2011-07-06 深圳市天电光电科技有限公司 Led散热器制造方法
FR2961888A1 (fr) * 2010-06-29 2011-12-30 Cml Innovative Technologies Boitier destine a recevoir un element susceptible de chauffer, et eclaireur comprenant un tel boitier
WO2012034937A1 (de) * 2010-09-17 2012-03-22 Automotive Lighting Reutlingen Gmbh Kraftfahrzeugscheinwerfer mit einer gasentladungslampe
WO2015024839A1 (de) * 2013-08-23 2015-02-26 Zizala Lichtsysteme Gmbh Kühleinrichtung für einen scheinwerfer eines kraftfahrzeugs, insbesondere für einen laserscheinwerfer
EP2743566A4 (de) * 2011-08-12 2015-08-12 Chongqing Shangchuan Invest Co Ltd Led-lichtquelle
EP2952383A1 (de) * 2014-06-06 2015-12-09 T.Y.C. Brother Industrial Co., Ltd Fahrzeugbeleuchtungsvorrichtung
EP3012150A1 (de) * 2014-10-24 2016-04-27 Automotive Lighting Reutlingen GmbH Beleuchtungseinrichtung für ein kraftfahrzeug
CN110131675A (zh) * 2018-02-09 2019-08-16 株式会社小糸制作所 冷却单元以及车辆用灯具

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8596845B2 (en) * 2006-06-30 2013-12-03 Dialight Corporation Apparatus for using heat pipes in controlling temperature of an LED light unit
TW201016501A (en) * 2008-10-24 2010-05-01 Bright Led Electronics Corp LED vehicle lamp device
JP5491828B2 (ja) * 2009-11-13 2014-05-14 株式会社小糸製作所 車両用灯具
WO2011104813A1 (ja) * 2010-02-23 2011-09-01 Ｎｅｃディスプレイソリューションズ株式会社 Ｌｅｄ光源ボックスおよびｌｅｄ光源ボックスを備えたプロジェクタ
WO2011108571A1 (ja) * 2010-03-05 2011-09-09 日本電気株式会社 発光装置の冷却システム、およびそれを用いた発光装置
JP5653306B2 (ja) * 2011-06-16 2015-01-14 三菱自動車工業株式会社 車両用ランプ装置
DE102011089945B4 (de) * 2011-12-27 2017-12-21 Automotive Lighting Reutlingen Gmbh Kraftfahrzeugscheinwerfer
KR101559750B1 (ko) 2014-02-06 2015-10-26 주식회사 제이케이에이 냉각효율을 향상시킨 차량용 고휘도 led 전조등용 방열구조
US9562664B2 (en) * 2015-01-19 2017-02-07 Osram Sylvania Inc. Vehicle headlamp regulated airflow system and method
KR102468106B1 (ko) * 2015-11-09 2022-11-18 엘지이노텍 주식회사 차량용 램프
FR3082279B1 (fr) * 2018-06-08 2021-06-11 Valeo Vision Extracteur d'air pour projecteur de vehicule automobile
DE102018114765A1 (de) * 2018-06-20 2019-12-24 Zkw Group Gmbh Kraftfahrzeugscheinwerfer
JP2020077564A (ja) * 2018-11-09 2020-05-21 株式会社小糸製作所 車輌用灯具

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR89371E (fr) * 1964-11-30 1967-06-16 Seima Dispositif de protection, notamment pour phare de véhicule automobile et phare muni de ce dispositif ou similaire
FR2698055A1 (fr) * 1992-11-18 1994-05-20 Peugeot Bloc optique ventilé, notamment pour véhicule automobile.
EP1139019A1 (de) 2000-03-31 2001-10-04 Relume Corporation Thermische Kontrolle einer LED
DE10227720A1 (de) * 2002-06-21 2004-01-22 Audi Ag LED-Scheinwerfer
DE10258623A1 (de) 2002-12-16 2004-07-08 Daimlerchrysler Ag Scheinwerfereinheit für ein Kraftfahrzeug
FR2853717A1 (fr) * 2003-04-08 2004-10-15 Koito Mfg Co Ltd Phare de vehicule et appareil pour circuit d'eclairage
US20060076572A1 (en) 2004-09-29 2006-04-13 Osram Opto Semiconductors Gmbh Light-emitting diode arrangement and motor vehicle headlamp
WO2006052022A1 (en) * 2004-11-12 2006-05-18 Showa Denko K.K. Automotive lighting fixture and lighting device
US20060181894A1 (en) 2005-02-16 2006-08-17 Visteon Global Technologies, Inc. Headlamp assembly having cooling channel
US20070008727A1 (en) * 2005-07-07 2007-01-11 Visteon Global Technologies, Inc. Lamp housing with interior cooling by a thermoelectric device
US20070091632A1 (en) * 2005-10-25 2007-04-26 Visteon Global Technologies, Inc. Convectively cooled headlamp assembly
US20070121336A1 (en) * 2005-11-29 2007-05-31 Visten Global Technologies, Inc. Headlamp assembly having cooling channel
US20070127257A1 (en) * 2005-12-05 2007-06-07 Visteon Global Technologies, Inc. Headlamp assembly with integrated housing and heat sink

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002068016A (ja) * 2000-06-14 2002-03-08 Denso Corp 車両のフロントエンド構造
JP2004127782A (ja) * 2002-10-04 2004-04-22 Ichikoh Ind Ltd 車両用灯具および灯火装置
JP4629558B2 (ja) * 2004-11-12 2011-02-09 昭和電工株式会社 車両用灯具及び灯火装置
JP4265560B2 (ja) * 2005-03-31 2009-05-20 市光工業株式会社 車両用灯具

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR89371E (fr) * 1964-11-30 1967-06-16 Seima Dispositif de protection, notamment pour phare de véhicule automobile et phare muni de ce dispositif ou similaire
FR2698055A1 (fr) * 1992-11-18 1994-05-20 Peugeot Bloc optique ventilé, notamment pour véhicule automobile.
EP1139019A1 (de) 2000-03-31 2001-10-04 Relume Corporation Thermische Kontrolle einer LED
DE10227720A1 (de) * 2002-06-21 2004-01-22 Audi Ag LED-Scheinwerfer
DE10258623A1 (de) 2002-12-16 2004-07-08 Daimlerchrysler Ag Scheinwerfereinheit für ein Kraftfahrzeug
FR2853717A1 (fr) * 2003-04-08 2004-10-15 Koito Mfg Co Ltd Phare de vehicule et appareil pour circuit d'eclairage
US20060076572A1 (en) 2004-09-29 2006-04-13 Osram Opto Semiconductors Gmbh Light-emitting diode arrangement and motor vehicle headlamp
WO2006052022A1 (en) * 2004-11-12 2006-05-18 Showa Denko K.K. Automotive lighting fixture and lighting device
US20060181894A1 (en) 2005-02-16 2006-08-17 Visteon Global Technologies, Inc. Headlamp assembly having cooling channel
US20070008727A1 (en) * 2005-07-07 2007-01-11 Visteon Global Technologies, Inc. Lamp housing with interior cooling by a thermoelectric device
US20070091632A1 (en) * 2005-10-25 2007-04-26 Visteon Global Technologies, Inc. Convectively cooled headlamp assembly
US20070121336A1 (en) * 2005-11-29 2007-05-31 Visten Global Technologies, Inc. Headlamp assembly having cooling channel
US20070127257A1 (en) * 2005-12-05 2007-06-07 Visteon Global Technologies, Inc. Headlamp assembly with integrated housing and heat sink

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2961888A1 (fr) * 2010-06-29 2011-12-30 Cml Innovative Technologies Boitier destine a recevoir un element susceptible de chauffer, et eclaireur comprenant un tel boitier
WO2012034937A1 (de) * 2010-09-17 2012-03-22 Automotive Lighting Reutlingen Gmbh Kraftfahrzeugscheinwerfer mit einer gasentladungslampe
CN102114495A (zh) * 2010-11-25 2011-07-06 深圳市天电光电科技有限公司 Led散热器制造方法
EP2743566A4 (de) * 2011-08-12 2015-08-12 Chongqing Shangchuan Invest Co Ltd Led-lichtquelle
WO2015024839A1 (de) * 2013-08-23 2015-02-26 Zizala Lichtsysteme Gmbh Kühleinrichtung für einen scheinwerfer eines kraftfahrzeugs, insbesondere für einen laserscheinwerfer
EP2952383A1 (de) * 2014-06-06 2015-12-09 T.Y.C. Brother Industrial Co., Ltd Fahrzeugbeleuchtungsvorrichtung
EP3012150A1 (de) * 2014-10-24 2016-04-27 Automotive Lighting Reutlingen GmbH Beleuchtungseinrichtung für ein kraftfahrzeug
CN110131675A (zh) * 2018-02-09 2019-08-16 株式会社小糸制作所 冷却单元以及车辆用灯具

Also Published As

Publication number Publication date
FR2913751A1 (fr) 2008-09-19
US7736041B2 (en) 2010-06-15
JP2008226843A (ja) 2008-09-25
US20080225537A1 (en) 2008-09-18

Similar Documents

Publication Publication Date Title
EP1970622A1 (de) Beleuchtungs- und/oder Signalisierungsvorrichtung für Kraftfahrzeug, die eine Außenwand mit Wärmeaustauschzone umfasst
EP2199669B1 (de) Vorrichtung zum Abkühlen eines optischen Moduls für einen Kraftfahrzeugscheinwerfer
US20080258598A1 (en) Heat Exchange Enhancement
US20110128753A1 (en) System and method for heat dissipation from an automotive lighting assembly having a liquid cooling circuit
EP3243024B1 (de) Optisches modul für fahrzeugscheinwerfer
FR2690040A1 (fr) Radiateur du type à tube à évacuation de chaleur pour un dispositif électronique.
EP3273148A1 (de) Fahrzeug-scheinwerfer
EP1881262A1 (de) Beleuchtungsvorrichtung mit Elektrolumineszenzdioden, die mit einem Außenkühlungssystem ausgerüstet ist
FR3058503A1 (fr) Dispositif lumineux equipe d'au moins un element peltier
EP2986895A1 (de) Kühlelement und kraftfahrzeug beleuchtungs- oder signalisierungsvorrichtung mit solch einem element
FR2996905A1 (fr) Dispositif lumineux avec refroidissement en plastique
EP2339232A1 (de) Lampe für Scheinwerfer und Scheinwerfer mit einer solchen Lampe
FR3072421B1 (fr) Levre d'entree d'air d'un moteur d'aeronef comportant un systeme de degivrage
FR2930814A1 (fr) Dispositif de refroidissement de sources lumineuses pour vehicule automobile
EP1914132A1 (de) Scheinwerfer eines Kraftfahrzeugs kombiniert mit einer Scheibenwischvorrichtung und Beleuchtungssystem, das einen solchen Scheinwerfer umfasst
FR3071961A1 (fr) Boitier de protection d'un pack batterie integrant des canaux de transport d'un fluide caloporteur
EP2532949B1 (de) Beleuchtungs- und/oder Signalisierungsvorrichtung mit integriertem Wärmeableiter
WO2016012705A1 (fr) Unite de chauffe de corps creux, qui comprend une cavite a basse temperature
FR2918442A1 (fr) Dispositif d'eclairage et/ou de signalisation pour vehicule automobile comprenant une cloison externe isolante.
FR2988811A1 (fr) Lampe a diode electroluminescente
FR3037127B1 (fr) Dissipateur thermique de module optique a del de projecteur automobile
FR2935461A1 (fr) Dispositif d'eclairage et/ou de signalisation de vehicule automobile comprenant un caloduc
JP2018098086A (ja) 車両用灯具の放熱構造
FR2866102A1 (fr) Radiateur muni de plaques rayonnantes et procede de fabrication de ce radiateur
WO2024126532A1 (fr) Module d'éclairage comprenant un dispositif de refroidissement produisant un flux d'air par ionisation de l'air

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

17P Request for examination filed

Effective date: 20090218

17Q First examination report despatched

Effective date: 20090326

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20131001