EP4194743A1 - Dispositif d'éclairage d'un véhicule automobile - Google Patents

Dispositif d'éclairage d'un véhicule automobile Download PDF

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Publication number
EP4194743A1
EP4194743A1 EP21213913.3A EP21213913A EP4194743A1 EP 4194743 A1 EP4194743 A1 EP 4194743A1 EP 21213913 A EP21213913 A EP 21213913A EP 4194743 A1 EP4194743 A1 EP 4194743A1
Authority
EP
European Patent Office
Prior art keywords
lighting device
light source
source support
dissipating member
air
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.)
Pending
Application number
EP21213913.3A
Other languages
German (de)
English (en)
Inventor
Sebastien Bera
Mathieu ROBICHON
Francois Berrezai
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
Priority to EP21213913.3A priority Critical patent/EP4194743A1/fr
Publication of EP4194743A1 publication Critical patent/EP4194743A1/fr
Pending legal-status Critical Current

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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
    • F21S45/49—Attachment of the cooling means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • 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
    • F21S41/19—Attachment of light sources or lamp holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/265—Composite lenses; Lenses with a patch-like shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
    • 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

Definitions

  • the present invention relates to a lighting device of an automotive lighting device, and more particularly to a lighting device of an automotive vehicle having a heat-dissipating member.
  • Lighting devices are used in automobiles and the like, for lighting the path ahead. These light devices especially LED based lighting devices are highly efficient, but are known to generate tremendous amount of heat during operation. The heat generated by the light sources of the lighting devices not only reduces the light output but also shortens the operating life of the lighting devices significantly.
  • LED for Light-Emitting Diode in English
  • PCBs printed circuit boards
  • These boards are used to provide electrical and mechanical connection to the light sources and in cases to other electronic components of the light source.
  • the boards also act as a primary component for heat transfer as the light sources are directly mounted on them.
  • the heat generated by the light sources is transferred to the printed circuit boards through conduction.
  • the printed circuit boards such as the insulated metal based printed circuit board, are provided with heat transfer means such a heat sink to transfer the heat generated by the light sources.
  • These heat transfer means are usually attached to the printed circuit boards to improve the heat transfer capabilities of the lighting device.
  • the lighting devices usually become bigger and heavier. Whereas, it is desirable to have a lighter and compact design for the lighting devices to meet the requirements of vehicle design.
  • the heat transfer rate may not be optimum to enable effective heat transfer from the printed circuit board and ultimately from the light source of the lighting device.
  • An object of the present invention is to solve the disadvantages described above of known lighting devices.
  • the present invention provides a lighting device having a heat-dissipating member for dissipating the heat generated by the light sources.
  • the invention provides a lighting device that is capable of dissipating heat generated by the lighting device. More particularly, the invention provides a heat-dissipating member for a lighting device that is capable of providing direct flow of air on to the printed circuit board for transferring heat generated in the lighting device.
  • a lighting device of an automotive vehicle comprising:
  • the arrangement of the light source support on the heat dissipating member helps in designing a compact lighting device that weighs less. Further, the integrated heat transfer area enables quick and efficient heat transfer from the lighting device. This combined provides a compact lighting device capable of transferring heat efficiently and quickly.
  • the integrated heat transfer area comprises at least one fin uniformly arranged on the at least one first surface to form plurality of air channels inside the airflow passage.
  • the at least one fin may increase the surface area of the heat dissipating member enabling more heat to be transferred away from the light source support and subsequently from the lighting device.
  • the at least one fin is arranged originating from the air inlet portion towards the air outlet portion.
  • the fin(s) from the inlet portion towards the outlet portion may enables the air from inlet portion to uniformly travels towards the outlet portion.
  • the uniform distribution of air enables better heat transfer from the lighting device and may prevent generation of hot spots.
  • the at least one fin is made of metal or thermally conductive plastic material.
  • the material of the fin(s) may enable the fins to transfer heat away from the printed circuit board by means of conduction.
  • the at least one fin is made integral with the first surface of the heat dissipating member.
  • the integrally formed fin may enable reduction in assembly time of the lighting device.
  • the air inlet portion is arranged in an axial direction of the lighting device.
  • the inlet portion in the axial direction may enable streamline and laminar flow of air inside the lighting device thus enabling heat transfer.
  • the air inlet portion is arranged substantially perpendicular to the axis of the lighting device.
  • the arrangement may enable to reduce the overall dimension of the lighting device further enabling a compact design for lighting device.
  • the lighting device further comprises a blower arranged to blow air in the airflow passage through the inlet portion.
  • the blower may be configured to provide high velocity air to the lighting device thus enabling quick and efficient heat transfer by means of convection.
  • the blower can be attached to said air inlet portion.
  • the integrated heat transfer area is configured to pass air directly over the light source support.
  • the light source support is arranged in such a way to form a wall of the airflow passage. The air passing directly over the light source support enables efficient heat transfer; this may further enable designing a compact lighting device, as the heat transfer efficiency due to the said arrangement is high.
  • the heat-dissipating member comprises a wall having one said first surface on each side, one said second surface projecting from either side of said wall.
  • One said lighting support is arranged on each corresponding side of the wall and forms together with the corresponding first and second surfaces a corresponding airflow passage.
  • the arrangement may allow multiple light source supports to be arranged on a single heat-dissipating member with several airflow channels, one on each side of the wall.
  • the lighting device comprises a further light source support presenting one surface that forms the said at least one first surface of the heat dissipating member, a light source being mounted on another surface of the said one further light source support. Therefore, in this embodiment one light source support is mounted on either side of the said airflow passage.
  • the arrangement enables multiple light sources having different functions such as low beam and high beam to be accommodated in a single lighting device. This enables a compact design for the lighting device, further, a single heat transfer means can be used to transfer heat from both sides of the device thus increasing the heat transfer efficiency.
  • a printed circuit board can form the said further light source support integrally.
  • the printed circuit board can be a PCB with a thermally conductive layer having a surface that forms the said at least one first surface of the heat dissipating member.
  • This PCB can be an IMS printed circuit board. IMS is the acronym for Insulated metal substrate.
  • Such a printed circuit board comprises a metal baseplate, for example aluminum, covered by a thin layer of dielectric and a layer of copper.
  • the further light source support can be formed by a thermally conductive plate presenting a first side, which forms the said at least one first surface of the heat dissipating member, and a second side on which a distinct PCB is mounted.
  • the lighting device further comprises at least one guide deflector arranged on the air inlet portion between the blower and the at least one fin.
  • the guide deflector may enable uniform distribution of the air generated by the blower towards the at least one fin, and more particularly towards the different airflow channels when there are several fins. Further, the guide deflector may enable smooth airflow and reduce turbulence effect.
  • the heat-dissipating member is made of thermally conductive plastic material or of metal.
  • the material of the heat-dissipating member may enable the fins to transfer heat away from the printed circuit board by means of conduction.
  • the light source support is a printed circuit board.
  • the printed circuit board can be a printed circuit board with a thermally conductive layer, such as an IMS printed circuit board, arranged such that the free surface of this layer faces the said first surface. The free surface is therefore in contact with airflow inside the airflow passage. This improves the heat transfer.
  • the invention also covers any combination of the above-mentioned non-limiting embodiments.
  • a lighting module for an automotive vehicle comprising:
  • the lighting module comprises an optical system configured to form an image of the reflector.
  • a vehicle headlamp that comprises at least one lighting module of the previous embodiments.
  • FIG 1a shows an isometric view of a lighting device, according to a first embodiment of the present invention.
  • FIG 1b shows a different isometric view of the lighting device of FIG 1a.
  • FIG 2 shows a schematic cut section of the lighting device member of FIG 1a, without showing the blower.
  • FIG 3a shows a schematic side cross sectional view of a lighting device member according to plane AA in figure 3b and according to a second embodiment of the present invention.
  • FIG 3b shows a schematic front cross sectional view of the lighting device member of FIG 3 a.
  • FIG 4 shows a lateral view of a lighting module for an automotive vehicle, including a lighting device according to a third embodiment of the present invention.
  • FIG 5 shows a cross section view of the lighting module of FIG 4 in a horizontal plane, showing the section through a heat-dissipating member for an automotive vehicle.
  • FIG 6 shows an isometric axial cross section view of the lighting module of FIG 4.
  • the present invention provides a lighting device for an automotive vehicle having a heat dissipation member that can provide an efficient heat transfer means, further, the lighting device having the heat dissipation member is configured to be compact and weigh less.
  • FIG 1a and FIG 1b depicts a lighting device 100 that may be configured to be a part of a lighting module of an automotive vehicle.
  • the lighting device 100 comprises a heat-dissipating member 10 for transferring heat generated in the lighting device 100.
  • the heat dissipating member 10 comprises at least one first surface 12 and at least one second surface 14 that is substantially perpendicular to the at least one first surface 12.
  • the heat-dissipating member 10 may be configured to form a profile that resembles an I-beam structure.
  • the heat-dissipating member 10 comprises on the one hand a first wall 13 that presents two opposite sides that each form one said first surface 12, and on the other hand at least one second wall 9 that projects in either direction from the corresponding one first surface 12.
  • the surface of the second wall 9 above the first wall 13 forms an upper second surface 14 and the surface of the second wall below the first wall forms a lower second surface 14.
  • the first surfaces 12 of the heat-dissipating member 10 are substantially horizontal and extends in the axial direction of the lighting device 100.
  • the first wall 13 forms a plate.
  • two second surfaces 14 are provided on the periphery of the first surfaces 12, with their second surface 14 being oriented inward and facing each other.
  • the at least one second surface 14 may be provided in locations other than the periphery of the at least one first surface 12.
  • the lighting device 100 further comprises at least one light source support 16 for mounting at least one light source.
  • the at least one light source support 16 is attached to the at least one second surface 14 of the heat dissipating member 10.
  • the at least one light source support 16 may be mounted on to the at least one second surface 14 by means of mechanical joining means such as thermal glue, welding or soldering.
  • the at least one light source support 16 may be mounted on either side of the first surfaces 12 of the heat dissipating member 10.
  • the air inlet portion 18a can be arranged in an axial direction of the lighting device 100.
  • a blower 40 may be provided at the air inlet portion 18a.
  • the blower 40 may be configured to be attached directly to the heat-dissipating member 10.
  • suitable mounting means and airflow means may be provided to enable smooth operation, such as a frame 11.
  • the blower 40 may be arranged such that the axis of the blower and the axial direction of the lighting device 100 coincide.
  • the blower 40 may be configured to blow air into each of the integrated heat transfer area 18 such that air passes from the air inlet portion 18a towards the air outlet portion 18b. Airflow is represented in figure 2 by the thick horizontal arrows. The air blown by the blower 40 passes through each of the integrated heat transfer area 18 such that the air is blown over the entire surface of the at least one light source support 16. Since the light source is directly mounted on the light source support 16, the heat generated by the light source is directly transferred to the light source support 16 by means of conduction.
  • the air inside the integrated heat transfer areas 18 that blows over the entire surface of the light source supports 16 enables effective heat transfer by means of convection. Due to the arrangement as described earlier as the heat-dissipating member 10 of the present invention is able to transfer the heat generated by the light source effectively, need for a separate heat sink is avoided. This enables the lighting device 100 to be of compact design that can transfer heat generated by the light sources effectively.
  • the at least one light source support 16 is in contact with the heat dissipating member 10, heat generated by the light sources may be transferred to the at least one second surface 14, this enables more heat to be transferred in a short time.
  • the first surfaces 12 and the second surfaces 14 can be surfaces of a monobloc part, which forms a monobloc heatsink, which carries the corresponding light source supports 16.
  • the heat-dissipating member can be formed by the monobloc heatsink, which can also comprise a rear portion that forms the frame 11 to embed the blower 40.
  • the heat-dissipating member 10 may be made of thermally conductive plastics or polymer based materials such as ABS (Acrylonitrile Butadiene styrene), PC (polycarbonate), PBT (Polybutylene terephthalate), etc. Alternately, the heat-dissipating member 10 can be made of metal as well, such as aluminum, notably a die-cast aluminum.
  • the circulation of air inside the lighting device 100 through the heat dissipation member 10 may help in removing moisture inside the lighting device 100 and may aid in defogging of the lighting device 100.
  • the airflow passage of the upper heat transfer area 18 and the airflow passage of the lower heat transfer area 18 are each forming a single airflow channel.
  • the airflow passage can be divided by several axial fins into several airflow channels.
  • Fig. 3 a and 3b show second embodiment of the present invention, wherein the heat dissipating member 10 comprises a further light source support 17 which presents on a first face the said first surface 12 and which carries light sources on a second face opposite to its first face.
  • This further light source support 17 preferably comprises a thermally conductive material, which forms the said first surface 12.
  • the further light source support 17 can be formed by a PCB which has a thermally conductive layer, here a metal layer, forming the said first surface 12.
  • a PCB can for example be an IMS printed circuit board.
  • this further light source support can be a metal plate of a monobloc part of a heatsink with a PCB and with at least one LED mounted on it.
  • the integrated heat transfer area 18 can comprise at least one fin 20 uniformly arranged on the at least one first surface 12 to form plurality of air channels 24.
  • the fins 20 are arranged originating from the air inlet portion 18a towards the air outlet portion 18b.
  • the fins 20 are configured to increase the surface area for enabling more heat to be transferred by the heat dissipation member 10.
  • the fins 20 may be provided on the at least one first surface 12 by being plated or being attached by means of soldering, welding or may be attached by means of thermal conductive adhesive materials.
  • FIG 4 shows overall structure of the lighting module 200 that includes a housing, an optical element and a blower for blowing high velocity air to enable heat transfer inside the lighting module 200.
  • This module comprises a lighting device 100 according to a third embodiment.
  • the lighting device 100 comprises at least one guide deflector 22 arranged on the air inlet portion 18a.
  • the guide deflector 22 may be provided between the blower 30 and the at least one fin 20, here a plurality of fins 20.
  • the air inlet portion 18a can be arranged substantially perpendicular to the axis of the lighting device 100.
  • the guide deflector 22 enables to redirect the airflow along the axial direction.
  • the guide deflector 22 may be provided having semi conical shape such that it directs the air from the blower uniformly towards the plurality of fins 20 and inside the airflow channels 24.
  • blower 30 may be arranged on or facing the guide deflector 22 such that the air from the blower 30 is directed towards the guide deflector 22.
  • the guide deflector 22 helps in creating a smooth airflow and directs the air towards the at least one fin 20.
  • the at least one fin 20 is configured to originate from the air inlet portion 18a such that the at least fin 20 is as close as possible to the guide deflector 22.
  • the air channel 24 created by the at least one fin 20 may enable increase in the flow rate of the air and may further increase the heat transfer by means of forced convection.
  • the at least one light source support 16 may be a printed circuit board such as an Insulated Metal Base (IMS) printed circuit board, such as in this third embodiment.
  • IMS Insulated Metal Base
  • the lighting module 200 can comprise a housing, at least one light source (not visible on these figures) mounted on at least one light source support 16 configured to emitting light rays. Further, the lighting module 200 comprises at least one reflector 42 configured to reflect the light rays emitted by the light source into a light beam along an optical axis of the module.
  • a heat dissipating member 10 for transferring heat generated by the at least one light source.
  • the heat dissipating member 10 comprises at least one first surface 12 (visible in FIG 6) and at least one second surface 14 (visible in FIG 5) that is substantially perpendicular to the at least one first surface.
  • the top portion of the heatsink has been omitted, leaving only the second surface 14 in order to enable seeing the fins.
  • the said first surface 12 is therefore not visible in FIG 5.
  • the heat dissipating member 10 comprises a first wall 13 that presents, here below, the said first surface 12 which delimits one side of the air flow channels 24.
  • This first wall 13 can be, as here, a metal plate of a monobloc heatsink forming the heat-dissipating member.
  • This monobloc heatsink can comprise the fins made integral with it, as shown on figure 6.
  • the monobloc heatsink can also comprise a periphery wall presenting the said second surfaces 14 oriented inward, as can be seen in figure 5.
  • the airflow channels 24 are made of grooves with a U-shape section delimited by fins and/or second surface 14 on the side and by the first surface 12 at the bottom. These grooves are covered by the light source support 16, here a PCB, to form the airflow channels 24 in a closed manner from on open inlet to an open outlet 18b.
  • the lighting module 200 can comprise an optical projection system, such as a lens 44, configured to form an image of the reflector 42.
  • an optical projection system such as a lens 44
  • the first wall 13 can comprise a second face 15 which is opposite to the said first surface 12 and on which further light sources are mounted, such as LEDs.
  • these LEDs are not visible but are close and behind light blockers 19, which are designed to block the light rays that would be emitted directly toward the lens 44.
  • This first wall 13 forms therefore a further light source support 17.
  • the module can comprise at least one further reflector 43 configured to reflect the light rays emitted by the further light source(s) into a further light beam along an optical axis of the module.
  • the lens 44 may be configured to form an image of the further reflector 43.
  • the module is a bi-function module, with the reflector 42 being arranged below the air channels 24 and with the further reflector 43 being arranged above the air channels 24.
  • the said further reflector 43 forms with an upper portion of the lens 44 a low beam
  • the said reflector 42 forms with a lower portion of the lens 44 a complementary beam.
  • This complementary beam can be arranged such that it forms with the low beam a full high beam and/or can be arranged such that it forms with the low beam an adaptive high beam.
  • the lighting device can be an autonomous set including the heatsink and the PCB mounted on it.
  • the lighting device can be sandwiched between two parts of the housing. As in this example, these two parts can be a lower part and an upper part, which respectively include the reflector 42 and the further reflector 43. These two parts, as here, can also hold the lens 44.
  • a vehicle headlamp for lighting the path of the vehicle may be provided with the at least one lighting module 200 described above.
  • the lighting module 200 may be provided on the right and left side of the vehicle and may be configured to produce a combined light beam pattern. Additionally, an optical axis adjustment means may be provided to adjust the optical axis of the headlamp.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
EP21213913.3A 2021-12-10 2021-12-10 Dispositif d'éclairage d'un véhicule automobile Pending EP4194743A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21213913.3A EP4194743A1 (fr) 2021-12-10 2021-12-10 Dispositif d'éclairage d'un véhicule automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21213913.3A EP4194743A1 (fr) 2021-12-10 2021-12-10 Dispositif d'éclairage d'un véhicule automobile

Publications (1)

Publication Number Publication Date
EP4194743A1 true EP4194743A1 (fr) 2023-06-14

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EP21213913.3A Pending EP4194743A1 (fr) 2021-12-10 2021-12-10 Dispositif d'éclairage d'un véhicule automobile

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EP (1) EP4194743A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150354775A1 (en) * 2014-05-07 2015-12-10 Hella Kgaa Hueck & Co. Light Module for a Vehicle Headlamp
KR20170117717A (ko) * 2016-04-14 2017-10-24 순천대학교 산학협력단 운송기기용 헤드램프
EP3385605A1 (fr) * 2017-04-06 2018-10-10 Valeo Iluminacion Dispositif de refroidissement
US20180340682A1 (en) * 2017-05-24 2018-11-29 Osram Sylvania Inc. Lighting device modules
US10228105B2 (en) * 2016-05-31 2019-03-12 Valeo Vision Lighting and/or signaling device for a motor vehicle, provided with a light module cooled by means of an air flow generator
US11079090B1 (en) * 2020-11-16 2021-08-03 Morimoto Lighting, LLC Cooling systems for vehicle headlights

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150354775A1 (en) * 2014-05-07 2015-12-10 Hella Kgaa Hueck & Co. Light Module for a Vehicle Headlamp
KR20170117717A (ko) * 2016-04-14 2017-10-24 순천대학교 산학협력단 운송기기용 헤드램프
US10228105B2 (en) * 2016-05-31 2019-03-12 Valeo Vision Lighting and/or signaling device for a motor vehicle, provided with a light module cooled by means of an air flow generator
EP3385605A1 (fr) * 2017-04-06 2018-10-10 Valeo Iluminacion Dispositif de refroidissement
US20180340682A1 (en) * 2017-05-24 2018-11-29 Osram Sylvania Inc. Lighting device modules
US11079090B1 (en) * 2020-11-16 2021-08-03 Morimoto Lighting, LLC Cooling systems for vehicle headlights

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