EP4022216A1 - Combination of a motor vehicle headlamp and a coolant circuit of a motor vehicle - Google Patents
Combination of a motor vehicle headlamp and a coolant circuit of a motor vehicleInfo
- Publication number
- EP4022216A1 EP4022216A1 EP20761566.7A EP20761566A EP4022216A1 EP 4022216 A1 EP4022216 A1 EP 4022216A1 EP 20761566 A EP20761566 A EP 20761566A EP 4022216 A1 EP4022216 A1 EP 4022216A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- motor vehicle
- coolant
- coolant circuit
- heat sink
- radiation source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002826 coolant Substances 0.000 title claims abstract description 106
- 230000005855 radiation Effects 0.000 claims abstract description 70
- 239000004065 semiconductor Substances 0.000 claims abstract description 61
- 238000001816 cooling Methods 0.000 claims abstract description 29
- 238000004378 air conditioning Methods 0.000 claims abstract description 8
- 239000002131 composite material Substances 0.000 claims description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 6
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F21S45/20—Promoting gas flow in lighting devices, e.g. directing flow toward the cover glass for demisting
-
- 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
- F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
- F21S41/13—Ultraviolet light; Infrared light
-
- 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
- F21S45/30—Ventilation or drainage of lighting devices
- F21S45/33—Ventilation or drainage of lighting devices specially adapted for headlamps
-
- 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
- F21S45/465—Forced cooling using liquid from other vehicle cooling systems, e.g. from air-conditioning or engine cooling systems
Definitions
- the present invention relates to a composite of at least one motor vehicle headlight and a coolant circuit of a motor vehicle according to the preamble of claim 1.
- Such a composite is known from DE 102005 005 753 A1, the motor vehicle headlight having at least one semiconductor radiation source and at least one heat sink which is thermally coupled to the coolant circuit.
- Motor vehicle headlights have the advantage that smaller heat exchangers are used in the motor vehicle headlights than is the case without liquid cooling. This is because the liquid cooling can transport larger amounts of heat than, for example, air cooling. Motor vehicle headlights whose
- Semiconductor radiation sources for visible light, radar and lidar can be cooled with fans (active) or with large heat sinks (passive). Air cooling in motor vehicle headlights is only successful if there are cold areas in which the heated motor vehicle headlight air can be cooled. There are always hotter variants of internal combustion engines in normal vehicles. In this environment you have to
- Motor vehicle headlamp materials can withstand temperatures of - 40 ° C to 105 ° C and in some cases even up to 120 ° C over a long period of operation (e.g. 12,000 h).
- Motor vehicle headlight components such as semiconductor radiation sources such as light-emitting diodes and laser diodes and optical components such as lenses made of PMMA then age more quickly at high temperatures.
- the present invention relates to the object of further improving the known composite. This object is achieved with the features of claim 1.
- the present invention differs from the known motor vehicle headlight by the characterizing features of claim 1. Accordingly, the motor vehicle headlight according to the invention has a housing and a transparent cover plate which covers a light exit opening of the housing and which, together with the housing, delimits an interior of the motor vehicle headlight.
- the coolant circuit is an electronics coolant circuit or a battery coolant circuit or an air conditioning cooling circuit of the motor vehicle.
- An electronic coolant circuit is increasingly used in motor vehicles to cool control devices.
- Such a coolant circuit works, for example, with a coolant temperature between 0 ° C and 30 ° C. This is also a favorable temperature for the semiconductor radiation sources of the motor vehicle headlight. This also applies to the coolant temperature of a battery coolant circuit, as it is also increasingly used. This coolant temperature is usually below 60 ° C.
- These cooling circuits are better suited for air conditioning motor vehicle headlights than the usual cooling circuits of internal combustion engines, which dissipate combustion heat and / or cool the engine oil. Because of the comparatively low coolant temperature, an air conditioning coolant circuit is also well suited.
- the thermal loads on the control electronics and the plastic components are reduced compared to air conditioning at higher temperatures. For example, evaporation of plastic from plastic components of the motor vehicle headlight is reduced.
- Fluctuations in the thermal changes in length of all dimensions in the interior of the motor vehicle headlight are also reduced, which is advantageous for the quality of the imaging properties of the motor vehicle headlight.
- a high quality is particularly favorable for a desired sharpness of light-dark boundaries in light distributions generated by the motor vehicle headlight. Sharp and precisely localized light-dark borders are required, for example, for partial high beam light distributions in which defined areas are darkened to avoid dazzling other road users.
- scratch-resistant and expensive anti-fog coating of the cover pane can be dispensed with, because the air conditioning temperatures are on the other hand high enough to prevent moisture from condensing on the cover pane and / or to prevent condensation that may occur during standstill remove.
- a preferred embodiment is characterized in that the heat sink has an inlet hydraulically connected to the coolant circuit and an outlet hydraulically connected to the coolant circuit and coolant of the coolant circuit can flow through it from the inlet to the outlet.
- exactly one heat sink connected to the coolant circuit and through which coolant of the coolant circuit can flow is arranged in the interior space and that more than one semiconductor radiation source is arranged in a thermally conductive contact with the heat sink attached to the heat sink.
- Another preferred embodiment is characterized in that more than one heat sink through which the coolant of the coolant circuit can flow is arranged in the motor vehicle headlight.
- At least two heat sinks through which the coolant of the coolant circuit can flow are arranged in the motor vehicle headlight, the inputs of which are hydraulically connected to one another upstream of the two heat sinks and whose outputs are hydraulically connected to one another downstream of the two heat sinks.
- Coolant circuit through which heat sinks are arranged, wherein an input of a first of the at least two heat sinks is hydraulically connected to the coolant circuit and the output of the first heat sink is hydraulically connected to an input of another of the heat sinks and the output of the other of the at least two heat sinks either hydraulically is connected to the coolant circuit or to an inlet of a further heat sink through which a flow can flow.
- a semiconductor radiation source together with the control electronics with which the semiconductor radiation source can be controlled is arranged in a thermally conductive thermal contact with the heat sink on each of the flowable cooling bodies.
- a semiconductor radiation source with which visible light can be emitted, is arranged on one of the heat sinks in a thermally conductive contact with the heat sink.
- a semiconductor radiation source is arranged on one of the heat sinks in a thermally conductive contact with the heat sink, with which radar radiation can be emitted.
- Another preferred embodiment is characterized in that a semiconductor radiation source is arranged on one of the heat sinks in a thermally conductive contact with the heat sink, with which infrared radiation can be emitted.
- Heat spreader is arranged, which is arranged in thermal contact both with the semiconductor radiation source and with the heat sink.
- the heat spreader is copper, graphite,
- the heat sink has a flow channel running in its interior from the inlet to the outlet, which has an opening facing the semiconductor radiation source or the heat spreader, which is tightly closed by the semiconductor radiation source or the heat spreader.
- the motor vehicle headlight has a frame which is different from the housing and which is designed to be fastened to a body of the motor vehicle and to which at least one module is fastened which has at least one semiconductor radiation source.
- the frame is preferably made of metal. But it can also consist of a plastic. Because of the attachment of the module to the frame, the housing does not have the module holding function and can therefore be optimized with regard to other properties than its load-bearing capacity. Other properties in this context are, for example, resistance to warping and, associated with this, the positioning accuracy of all optical components.
- a cover frame is arranged in the interior space such that there is an air gap between the cover frame and an inside of the cover plate, which heats an air flow from the heat sink and possibly also to the at least one semiconductor radiation source Air between the inside of the cover and the
- the heat exchange between the heat sink and the interior air can, in particular, also run in the opposite direction so that the interior air is heated on the heat sink and transported to the cover panel via the semiconductor radiation source in order to free it from moisture in liquid and / or frozen form.
- FIG. 1 shows a combination of a motor vehicle headlight and a coolant circuit of a motor vehicle
- FIG. 2 shows an embodiment with exactly one radiation source heat exchanger and several semiconductor radiation sources
- FIG. 3 shows an embodiment with several radiation source heat exchangers arranged hydraulically in series
- FIG. 4 shows an embodiment with a plurality of cooling bodies lying hydraulically in parallel; and
- Figure 5 shows an embodiment of a heat sink with an additional heat spreader.
- the same reference symbols denote the same elements or at least elements which perform the same function.
- FIG. 1 shows a composite 10 composed of a motor vehicle headlight 12 and a coolant circuit 14 of a motor vehicle.
- the motor vehicle headlight 12 has at least one semiconductor radiation source 16 and at least one heat sink 18.
- Motor vehicle headlight 12 further has a housing 20 and a transparent cover plate 22, which has a
- the motor vehicle headlight 12 preferably has a frame 26 which is different from the housing 20 and which is designed to be fastened to a body 28 of the motor vehicle.
- the housing 20 is preferably attached directly to the frame 26.
- the frame 26 is preferably made of metal. But it can also consist of a plastic.
- At least one module 30, which has at least one semiconductor radiation source 16, is fastened to the frame 26. Because the module 30 is fastened to the frame 26, the housing 20 has no function of holding the module 30 and can therefore be optimized with regard to properties other than its load-bearing capacity.
- the module 30 furthermore has an optical device 32 which is set up and arranged for this purpose
- the optical device 32 has an optical element in the form of a reflector.
- the optical device 32 can also have a lens or catadioptric optics.
- the motor vehicle headlight 12 has a lower half
- a cover frame 36 is arranged near the inside of the cover plate 22 facing the interior 24.
- the cover frame 36 is arranged at least in part in the lower half 12.1 of the motor vehicle headlight 12 so that it prevents the inventory of the motor vehicle headlight 12, in particular mechanical or electrical components, such as a fan and / or parts of the heat sink 18 from being viewed from outside the Motor vehicle headlight 12 at least partially covers.
- the at least one semiconductor radiation source 16 is a semiconductor radiation source with which visible light can be generated.
- at least one of the at least one semiconductor radiation source (s) 16 is a semiconductor radiation source 16 with which radar radiation can be generated.
- at least one of the at least one semiconductor radiation source (s) 16 is a
- the heat sink 18 has a coolant inlet connection 40 and a coolant outlet connection 42.
- the heat sink 18 is hydraulically connected to the coolant circuit 14 via these connections and is therefore connected to the coolant 44 from the coolant inlet connection 40 to the
- Coolant outlet connection 42 can flow through. Inside the heat sink, the coolant inlet connection 40 is connected to the coolant outlet connection 42 through a cavity or a hollow line and can thus be flowed through.
- the semiconductor radiation source 16 is coupled in a thermally conductive manner to the heat sink 18 in a contacting manner.
- the cooling body 18 is preferably hydraulically connected directly to the coolant circuit 14. This means that no further components, in particular no further heat sink, are hydraulically connected between the heat sink 18 and the coolant circuit 14.
- the coolant circuit 14 is preferably an electronics coolant circuit or a battery coolant circuit of the motor vehicle.
- the coolant circuit 14 accordingly has at least one object 46 to be cooled and a coolant circuit heat exchanger 48, the heat extracted from the object 46, which with the preferably liquid coolant 44 of the coolant circuit 14 for
- Coolant circuit heat exchanger 48 is transported, for example emits a cooling air stream.
- the object 46 to be cooled is, for example, a control device or a plurality of control devices or a battery
- the coolant 44 circulating in the coolant circuit 14 has, for example, an average temperature of approx.
- the coolant circuit 14 is an electronics coolant circuit, and approx. 60 ° C. in the event that the coolant circuit 14 is a battery coolant circuit.
- the heat sink 18 takes approximately the same temperature as the coolant 44 on. A heat exchange takes place and at least partially takes place via the surface of the cooling body 18 Temperature equalization between the air in the interior 24 of the motor vehicle headlight 12 and the heat sink 18 takes place. This allows the interior 24 of the
- Motor vehicle headlights 12 are air-conditioned. At high temperatures, the heat sink 18 has a cooling effect, and at low temperatures it acts as a heating element.
- a heat exchange between the air in the interior space 24 and the heat sink 18 can be further improved if a fan 38 is arranged in the interior space 24, which fan drives an air flow 60 in the interior space 24.
- the heat exchange between the heat sink 18 and the interior air can, in particular, also run in the opposite direction so that the interior air is heated on the heat sink 18 and via the
- Semiconductor radiation source 16 is transported to the cover plate 22 in order to free it from moisture in liquid and / or frozen form.
- a cover frame 36 which may be present, is arranged in the interior space 24 in such a way that between the cover frame 36 and an inside of the cover plate 22 results in an air gap 62, which an air flow 60 from on the heat sink 18 and possibly also on the at least one
- the warm air flow 60 sweeping along the inside of the cover disk 22 heats the cover disk 22, so that condensation of moisture there is made more difficult and, if necessary, frozen moisture is thawed and transported away.
- the air flow 60 is generated by convection and / or by a suction effect from outside air flowing past ventilation openings 64, 66 and / or by or by the fan 38 which, for example, sucks in air in the interior 24 and blows it to the cover plate 22. Via a possibly existing ventilation opening, preferably two
- Ventilation openings 64, 66 in the housing 20 are found
- FIG. 2 shows an embodiment in which in the interior 24 of the motor vehicle headlight 12 exactly one to the Coolant circuit 14 connected and through which coolant of the coolant circuit 14 can flow heat sink 18 is arranged.
- the embodiment according to FIG. 2 is characterized in that a plurality of semiconductor radiation sources 16.1, 16.2, 16.3 are arranged on the heat sink 18 in a thermal, heat-conducting contact with the heat sink 18.
- FIG. 2 represents an embodiment with a single central heat sink 18, on which all semiconductor radiation sources 16.1, 16.2, 16.3 to be cooled are arranged and fastened in thermal contact.
- FIG. 3 shows an embodiment in which more than one heat sink 18.1, 18.2, 18.3 through which the coolant of the coolant circuit 14 can flow is arranged in the interior 24 of the motor vehicle headlight 12.
- n equal to 3 heat sinks 18.1, 18.2, 18.3 through which the coolant of the coolant circuit can flow are arranged in the motor vehicle headlight.
- the n heat sinks 18.1, 18.2, 18.3 are hydraulically connected in series. This means that an input of a first cooling body 18.1 of the n cooling bodies is hydraulically connected to the coolant circuit 14, and the output of the first cooling body 18.1 is hydraulically connected to an input of a second cooling body 18.2.
- the outcome of the second heat sink 18.2 is hydraulically connected to an input of the third heat sink 18.3.
- the output of the third heat sink 18.3 is hydraulically connected to an input of the coolant circuit 14.
- the outlet of the third heat sink can also be connected to an inlet of a further heat sink through which a flow can flow. It goes without saying that the number n of heat sinks can also differ from 3.
- Such functional units are, for example, those that have a semiconductor laser.
- Semiconductor lasers are used, for example, to generate high beam distributions or for LIDAR (light detection and ranging). Also heat sinks of functional units that generate comparatively little heat to be dissipated and possibly only a limited amount
- Temperature range are preferably arranged at the beginning of the hydraulic series connection. Less sensitive functional units are arranged on the other heat sinks in the series connection.
- the cooling liquid can be conducted from a central inlet from the cooling element to the cooling element with hoses and can be guided out of the motor vehicle headlight again at a central outlet.
- the advantage is a minimal heat sink size.
- the two heat sinks 18.4, 18.5 are therefore hydraulically connected in parallel to the rest of the coolant circuit 14.
- FIG. 5 shows a semiconductor radiation source 16 which, together with its control electronics 68, is fastened to a heat sink 18 in a thermally conductive manner. Between the semiconductor radiation source 16 and the heat sink 18, a heat spreader 70 is arranged, which is in a thermally conductive Contact with both the semiconductor radiation source 16 and the heat sink 18 is made.
- the heat spreader 70 which conducts heat well, quickly absorbs the heat emanating from the possibly punctiform semiconductor radiation source 16. The heat is distributed correspondingly quickly in the non-punctiform heat spreader 70 and passes from there into the heat sink 18 or directly into the coolant 44. With the heat spreader 70, undesired temperature peaks, which can occur in the possibly approximately punctiform semiconductor radiation source 16, are effectively avoided.
- the heat spreader 70 preferably has a material that conducts heat well, such as copper, graphite, aluminum nitride or a ceramic material or a heat pipe.
- the cooling body 18 in a preferred embodiment has a flow channel running in its interior from the inlet to the outlet, which has an opening 72 facing the semiconductor radiation source or the heat pipe, which is from the semiconductor radiation source 16 or the heat spreader 70 is sealed. In this way, the coolant 44 flowing through the heat sink 18 contacts a surface of the
- Heat spreader 70 directly, so that some of the heat given off by the heat spreader 70 is preferred directly to the liquid coolant 44 passes over, which brings about a particularly effective dewarning or cooling of the semiconductor radiation source 16.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019123063.2A DE102019123063A1 (en) | 2019-08-28 | 2019-08-28 | Composite of a motor vehicle headlight and a coolant circuit of a motor vehicle |
PCT/EP2020/073663 WO2021037814A1 (en) | 2019-08-28 | 2020-08-24 | Combination of a motor vehicle headlamp and a coolant circuit of a motor vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP4022216A1 true EP4022216A1 (en) | 2022-07-06 |
EP4022216B1 EP4022216B1 (en) | 2024-01-17 |
Family
ID=72240436
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20761566.7A Active EP4022216B1 (en) | 2019-08-28 | 2020-08-24 | Motor vehicle headlamp and coolant circuit of a motor vehicle |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4022216B1 (en) |
DE (1) | DE102019123063A1 (en) |
WO (1) | WO2021037814A1 (en) |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005005753A1 (en) | 2005-02-07 | 2006-08-10 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Lighting device for headlamp of vehicle, has light emitting diode and cooling unit e.g. Peltier unit, cooling diode, where unit is provided with connectors or heat pipe unit for liquid coolant e.g. water, to flow through cooling unit |
DE102006036058A1 (en) * | 2006-08-02 | 2008-02-14 | Audi Ag | Illumination device for motor vehicle, comprises carrier flowing through cooling medium circulating through cycle that is in heat conducting connection with light emitting diode, where carrier is implemented as flat pipe |
JP2009147175A (en) * | 2007-12-14 | 2009-07-02 | Shinko Electric Ind Co Ltd | Light-emitting device and vehicle head lamp |
DE102008013604B4 (en) * | 2008-03-11 | 2019-04-18 | Automotive Lighting Reutlingen Gmbh | Cooling device for a control device of a lighting device of a motor vehicle |
US7883251B2 (en) * | 2008-08-20 | 2011-02-08 | Visteon Global Technologies, Inc. | System and method for heat dissipation from an automotive lighting assembly having a liquid cooling circuit |
KR20110046165A (en) * | 2009-10-28 | 2011-05-04 | 현대모비스 주식회사 | Cooling device of head lamp for vehicles |
DE102010022856B4 (en) * | 2010-06-07 | 2013-10-31 | Mercury Lighting Ltd. | Lighting device and luminaire |
US20140071707A1 (en) * | 2012-09-12 | 2014-03-13 | Charles Kent Booker | Temperature controlled vehicle led lamp |
DE102013200786A1 (en) * | 2013-01-18 | 2014-07-24 | Robert Bosch Gmbh | Cooling system for battery of battery system used in e.g. plug-in hybrid car, supplies coolant discharged from first heat sink through first discharge line to second heat sink, such that peripheral battery components are cooled |
DE102014113387B4 (en) * | 2014-09-17 | 2022-02-03 | HELLA GmbH & Co. KGaA | Motor vehicle headlights with a thermally optimized display unit |
DE102015002246B4 (en) * | 2015-02-21 | 2017-08-17 | Audi Ag | Lighting device for a motor vehicle, motor vehicle and method for operating a lighting device |
US10665767B2 (en) * | 2016-08-30 | 2020-05-26 | Nec Display Solutions, Ltd. | Light source device, projection-type display device, and method for cooling semiconductor light-emitting element |
WO2018092846A1 (en) * | 2016-11-17 | 2018-05-24 | 三菱電機株式会社 | Light emitting device, electronic device, lighting device and headlight for vehicles |
AT519775B1 (en) * | 2017-03-28 | 2018-12-15 | Zkw Group Gmbh | Vehicle headlight and cooling system |
-
2019
- 2019-08-28 DE DE102019123063.2A patent/DE102019123063A1/en active Pending
-
2020
- 2020-08-24 EP EP20761566.7A patent/EP4022216B1/en active Active
- 2020-08-24 WO PCT/EP2020/073663 patent/WO2021037814A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
WO2021037814A1 (en) | 2021-03-04 |
DE102019123063A1 (en) | 2021-03-04 |
EP4022216B1 (en) | 2024-01-17 |
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Legal Events
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