WO2018088500A1 - Lampe de véhicule - Google Patents

Lampe de véhicule Download PDF

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Publication number
WO2018088500A1
WO2018088500A1 PCT/JP2017/040489 JP2017040489W WO2018088500A1 WO 2018088500 A1 WO2018088500 A1 WO 2018088500A1 JP 2017040489 W JP2017040489 W JP 2017040489W WO 2018088500 A1 WO2018088500 A1 WO 2018088500A1
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WO
WIPO (PCT)
Prior art keywords
light source
source unit
opening
light
horizontal
Prior art date
Application number
PCT/JP2017/040489
Other languages
English (en)
Japanese (ja)
Inventor
孝徳 浜本
和宏 黒田
Original Assignee
市光工業株式会社
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 市光工業株式会社 filed Critical 市光工業株式会社
Priority to CN201780068492.XA priority Critical patent/CN109906339B/zh
Priority to EP17870250.2A priority patent/EP3540293B1/fr
Publication of WO2018088500A1 publication Critical patent/WO2018088500A1/fr

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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
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • 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
    • 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
    • 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
    • F21V29/70—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

Definitions

  • the present invention relates to a vehicular lamp.
  • Patent Document 1 discloses a vehicular lamp including a lamp unit that can form both a low beam light distribution pattern and a high beam light distribution pattern, and the high beam light distribution pattern uses a plurality of light emitting chips.
  • a vehicular lamp that can perform variable high beam (Adaptive Driving Beam) control that changes a light distribution pattern according to the position of a preceding vehicle or an oncoming vehicle is disclosed.
  • semiconductor-type light sources such as LEDs
  • semiconductor-type light sources such as LEDs are used as light sources for vehicle lamps, as can be seen in Patent Document 1. It is becoming.
  • This invention is made
  • An object of the present invention is to provide a vehicular lamp that has improved cooling efficiency.
  • a vehicular lamp according to the present invention includes a first light source unit having a semiconductor-type first light emitting chip that emits light for low beam light distribution, and is disposed on the front side of the first light source unit.
  • a second light source unit having a semiconductor-type second light emitting chip that emits light for use, and a heat sink in which the first light source unit and the second light source unit are arranged, and the heat sink includes the first light source unit.
  • the vertical portion includes a plurality of vertical fins arranged in the horizontal direction extending from the rear surface of the inclined portion to the rear side to the position of the horizontal portion on the front side of the first light source portion,
  • the opening is provided so as to include a position corresponding to the vertical fin portion.
  • the second light source unit includes: a second substrate disposed on the inclined portion of the base unit; and the second light emitting chip provided on the second substrate.
  • the second substrate is provided with a substrate opening through which at least part of the gas can flow from the back surface side to the front surface side, and the substrate opening of the second substrate is also provided in the inclined portion of the base portion. Is provided with an opening through which gas can flow from the back side to the front side.
  • the fin portion is provided on the rear side of the vertical fin portion, and a plurality of horizontal fins extending downward from the horizontal portion are arranged in the front-rear direction.
  • positioned by is provided.
  • the opening is provided in the horizontal portion on the front side of the lateral fin portion.
  • At least the rear inner wall surface of the opening is inclined forward from the lower side to the upper side.
  • a lens disposed on the front side of the first light source unit and the second light source unit, and a front side disposed on the horizontal unit.
  • a shade, and the shade is disposed on the opening, and guides at least a part of the gas flowing out from the opening to the lens side.
  • the opening is provided to reach a part of the inclined portion.
  • a cooling fan is disposed below the fin portion and blows gas toward the base portion side.
  • a vehicular lamp including a first light source unit having a semiconductor-type first light-emitting chip and a second light source unit having a semiconductor-type second light-emitting chip, which has improved cooling efficiency.
  • the vehicular lamp can be provided.
  • 1 is a plan view of a vehicle including a vehicle lamp according to a first embodiment of the present invention. It is the front view which looked at the lamp unit of 1st Embodiment which concerns on this invention from the front side. It is a vertical sectional view along the lens optical axis of the lamp unit of the first embodiment according to the present invention. It is the perspective view which looked at the heat sink mainly from the upper side of 1st Embodiment which concerns on this invention. It is a figure for demonstrating the modification of the heat sink of 1st Embodiment which concerns on this invention. It is the front view which looked at the lamp unit of 2nd Embodiment which concerns on this invention from the front side.
  • the vehicular lamp according to the first embodiment of the present invention is a vehicular headlamp (101R, 101L) provided on each of the left and right front of the vehicle 102 shown in FIG. 1, and is simply referred to as a vehicular lamp below. To do.
  • the lamp unit 10 the description will be given mainly using the vehicle lamp on the right side of the vehicle as an example, but the parts not specifically mentioned are common to the left and right vehicle lamps.
  • the vehicular lamp according to the present embodiment includes a housing (not shown) that opens to the front side of the vehicle and an outer lens (not shown) that is attached to the housing so as to cover the opening, and is formed by the housing and the outer lens.
  • a lamp unit 10 (see FIGS. 2 and 3) and the like are disposed in the lamp chamber.
  • FIG. 10 is a front view of the lamp unit 10 as viewed from the front side
  • FIG. 3 is a vertical sectional view along the lens optical axis Z of the lamp unit 10
  • FIG. 4 is a perspective view of the heat sink 40 as viewed mainly from above.
  • FIG. 2 and 3 indicates the vertical axis passing through the rear focal point O of the lens 50.
  • the lens 50 is omitted and the inside is shown.
  • the lamp unit 10 of the present embodiment includes a first light source unit 20, a second light source unit 30, a heat sink 40, a lens 50, a reflector 60, a shade 70, and a cooling fan 80. It is equipped with.
  • the first light source unit 20 is a light source unit that emits light for low beam light distribution.
  • the first light source unit 20 is provided on one first substrate 21 and the first substrate 21, and emits light for low beam light distribution. It comprises a first light source 23 having a semiconductor-type first light-emitting chip 22 that radiates.
  • the first light source unit 20 may be configured by a plurality of first light sources 23.
  • the first light source 23 used in the first light source unit 20 may have a configuration in which a plurality of first light emitting chips 22 are provided on one first substrate 21.
  • an LED chip that is a semiconductor-type light-emitting chip is used as the first light-emitting chip 22, but the first light-emitting chip 22 is not limited to the LED chip.
  • a certain LD chip laser diode chip may be used.
  • the second light source unit 30 is a light source unit that emits light for high beam light distribution.
  • the second light source unit 30 is provided on one second substrate 31 and the second substrate 31.
  • a second light source 33 (see FIG. 3) having a plurality of semiconductor-type second light emitting chips 32 (see FIG. 3) that radiate light for high-beam distribution in the horizontal direction.
  • a power feeding connector 35 for power feeding to which an external connector is connected is provided.
  • the second light source unit 30 may be configured by arranging a plurality of second light sources 33 each having one second light emitting chip 32 on one second substrate 31 in the horizontal direction.
  • the cover 36 provided so as to cover the power supply connector 35 is also disposed on the second substrate 31 in order to prevent the power supply connector 35 from being seen from the outside.
  • the second light emitting chip 32 is controlled to be turned on / off according to the position of the preceding vehicle or the oncoming vehicle, thereby suppressing the generation of glare light on the preceding vehicle or the oncoming vehicle.
  • variable high beam (Adaptive Driving Beam) control for changing the high beam light distribution pattern can be performed.
  • an LED chip that is a semiconductor light emitting chip is used for the second light emitting chip 32 as in the case of the first light emitting chip 22, but the second light emitting chip 32 is not necessarily limited to the LED chip.
  • an LD chip laser diode chip which is a semiconductor light emitting chip may be used.
  • the rear focus O of the lens 50 is viewed from the front when the lamp unit 10 is viewed from the front side.
  • Four second light emitting chips 32 are arranged on the left side (vehicle outer side) and seven second light emitting chips 32 are arranged on the right side (vehicle inner side) with reference to the Y axis that is the vertical axis that passes through.
  • four second light emitting chips 32 may be provided on the right side with respect to the Y axis, and seven second light emitting chips 32 may be provided on the left side.
  • the vehicle inner side and the vehicle outer side are reversed between the right side vehicle lamp and the left side vehicle lamp. That is, in the left vehicle lamp, since the left side is the vehicle inner side and the right side is the vehicle outer side when viewed from the front, the number of the second light emitting chips 32 based on the Y axis is expressed as the vehicle inner side and the vehicle outer side. When used, the same applies to the left and right vehicle lamps.
  • the number of the second light emitting chips 32 is not necessarily limited to 11, and is appropriately determined in consideration of the horizontal light distribution range of the formed high beam light distribution pattern and variable high beam (Adaptive Driving Beam) control. It may be changed.
  • the heat sink 40 includes a base portion 41 on which the first light source unit 20 (see FIG. 3) and the second light source unit 30 (see FIG. 3) are arranged, and a plurality of heat radiating fins (vertical fins). 47 and fins 45 having lateral fins 49).
  • the heat sink 40 is preferably formed of a metal material or plastic material having high thermal conductivity. In this embodiment, the heat sink 40 made of aluminum die casting is used.
  • the base portion 41 includes a horizontal portion 42 in which the first light source unit 20 is disposed, an inclined portion 43 that extends obliquely forward and downward from the front side of the horizontal portion 42, and a first light source portion 30.
  • An opening 44 is provided at a position between the light source unit 20 and the second light source unit 30 and opens the back side and the front side of the base unit 41.
  • the fin portion 45 is a vertical fin in which a plurality of vertical fins 47 extending from the back surface of the inclined portion 43 to the rear side to the position of the horizontal portion 42 on the front side of the first light source unit 20 are arranged in the horizontal direction.
  • a horizontal fin portion 48 provided on the rear side of the vertical fin portion 46 and having a plurality of horizontal fins 49 arranged in the front-rear direction and extending downward from the back surface of the horizontal portion 42.
  • the lens 50 is a member that emits light from the first light source unit 20 and the second light source unit 30 under light distribution control so as to form a predetermined light distribution pattern on the front side, and a lens holder 50a (see FIG. 2 and FIG. 2). It is attached to the heat sink 40 via FIG.
  • the material forming the lens 50 is not particularly limited, and transparent glass or resin may be used. From the viewpoint of good moldability, the lens 50 is formed of a transparent resin. preferable. For example, for the lens 50, an acrylic resin that has a small wavelength dependency of the refractive index and easily suppresses the blue spectral color can be suitably used.
  • a resin having excellent heat resistance such as polycarbonate resin. May be used for the lens 50.
  • the reflector 60 is disposed on the horizontal part 42 of the base part 41 and covers the first light source part 20 in a semi-dome shape so as to open to the front side.
  • the reflector 60 has a reflective surface 61 formed on the first light source unit 20 side, and directs light emitted upward from the first light emitting chip 22 of the first light source unit 20 toward the lens 50. Reflect.
  • the reflecting surface 61 has a curved surface shape that is a part of an elliptical shape, and is formed to have two focal points, a first focal point and a second focal point.
  • the reflector 60 has a first focal point at the rear focal point O of the lens 50 or in the vicinity of the rear focal point O, and on the horizontal portion 42 so that the second focal point is positioned at the light emission center of the first light emitting chip 22 or near the light emission center. Is arranged.
  • the shade 70 shields part of the light from the first light emitting chip 22 of the first light source unit 20 reflected by the reflector 60 and forms a cut-off line of the low beam light distribution pattern. For this reason, as shown in FIG. 2, the edge part 71 of the front side of the shade 70 is formed in the shape matched with the cut-off line.
  • the shade 70 is disposed on the horizontal portion 42 of the heat sink 40 so that the portion that forms the upper end portion of the oblique cut-off line of the edge portion 71 is positioned in the vicinity of the rear focal point O of the lens 50.
  • the shade 70 is disposed on the horizontal portion 42 so that the rear focal point O of the lens 50 is located at a position of about 1.0 mm rearward from the edge portion 71. Yes.
  • the shade 70 is disposed on the horizontal portion 42 so as to be positioned slightly above the opening 44 on the opening 44 provided in the horizontal portion 42 of the heat sink 40. ing.
  • the cooling fan 80 is a member that accelerates cooling of the heat sink 40 by forcibly blowing a gas such as air to the fin portion 45 of the heat sink 40.
  • an attachment leg 41 a for attaching the cooling fan 80 extends from the base part 41 of the heat sink 40 to the lower side of the fin part 45, and is attached to the attachment leg 41 a.
  • the cooling fan 80 is disposed below the fin portion 45 so that the gas outlet side faces the fin portion 45 side.
  • FIG. 4 only the two mounting leg portions 41a on the rear side are visible, but the two mounting leg portions 41a are also provided on the front side, and the cooling fan 80 is mounted on the four mounting leg portions 41a. ing.
  • the lamp unit 10 having the above-described configuration will be described in further detail with reference to the flow of gas such as air from the cooling fan 80.
  • gas such as air from the cooling fan 80.
  • the cooling fan 80 is arranged so as to blow air to both the vertical fin portion 46 and the horizontal fin portion 48, and one of the winds generated by the cooling fan 80.
  • the part is sprayed toward the lateral fin part 48.
  • the wind blown to the horizontal fin portion 48 passes between the plurality of horizontal fins 49 arranged in the front-rear direction, flows upward while taking heat from the horizontal fin 49, and the first light source portion 20 of the horizontal portion 42. It hits the back side of the part where is arranged.
  • the horizontal fin 49 of the horizontal fin portion 48 is used as a vertical fin so that the wind is emitted to the rear side. Then, the wind cannot be efficiently released.
  • the rear fin side of the heat sink 40 is set as a horizontal fin portion 48 in which the horizontal fins 49 are arranged in the front-rear direction as in the present embodiment.
  • the flow of the wind flowing between the horizontal fins 49 can be improved, and the first light source unit 20 can be efficiently cooled.
  • the front side of the heat sink 40 is the vertical fin portion 46 in which the vertical fins 47 are arranged in the horizontal direction (left-right direction).
  • the vertical fin portion 46 is formed by extending the vertical fin 47 from the back surface of the inclined portion 43 extending diagonally forward and downward from the front side of the horizontal portion 42 to the rear side.
  • the horizontal portion 42 of the base portion 41 has an opening 44 through which gas can flow from the back surface side to the front surface side so as to include a position corresponding to the vertical fin portion 46. Therefore, a part of the wind that flows upward through the vertical fin portion 46 flows out to the upper side of the heat sink 40 through the opening 44.
  • the opening 44 is provided at a position between the first light source unit 20 and the second light source unit 30, and the wind flowing out from the opening 44 is supplied to these light source units (first light source unit 20.
  • the heat of the second light source unit 30) is combined and blown out to a portion where the temperature tends to be high, and high cooling efficiency can be obtained.
  • the flow direction of the gas blown out from the cooling fan 80 so as to flow upward is horizontal. Since it is guided in the direction (left side direction and right side direction as viewed in FIG. 3), at least part of the gas flowing out from the opening 44 is guided to the lens 50 and the second light source unit 30 side and flows out from the opening 44. At least a part of the gas is guided to the first light source unit 20 side. For this reason, it is possible to cool together with the 1st light source part 20 and the 2nd light source part 30 including the lens 50 which becomes high temperature easily by radiant heat.
  • the shade 70 is not necessarily located on the opening 44.
  • the opening 44 is provided up to a part of the upper side of the inclined portion 43, a part of the gas flowing out from the opening 44 is reduced. Since it can be made to flow out toward the front side, instead of positioning the shade 70 on the upper side of the opening 44, the opening 44 is provided to reach a part on the upper side of the inclined portion 43. Also good.
  • the opening 44 may be provided up to a part of the upper side of the inclined portion 43 in a state where the shade 70 is positioned above the opening 44. As described above, when the gas flowing out from the opening 44 is directed to the front side, the gas flows near the second light source unit 30, so that the second light source unit 30 can be cooled more efficiently.
  • the vertical fin portion 46 is wide on the cooling fan 80 side and narrows toward the upper side by the inclined portion 43, so that the wind from the cooling fan 80 can be efficiently passed.
  • the flow velocity of the wind increases toward the upper side, and it is easy to blow out from the opening 44 vigorously.
  • the shade 70 is the 2nd light source part 30 as the gas blown toward the lens 50 side. Coupled with the fact that it also extends upward, it flows so as to spread toward the second light source unit 30 in accordance with the fact that it is not restricted by the horizontal part 42 on the front side of the shade 70, so that the second light source unit 30 is efficiently Cooling.
  • the flow of the gas flowing out from the opening 44 is directed to the front side, the flow of the gas toward the first light source unit 20 is reduced, but the first light source unit 20 is used as in the present embodiment.
  • the second light source unit 30 provided with a large number of light emitting chips, the amount of heat generated by the second light source unit 30 increases. Therefore, considering the overall cooling efficiency, the flow of gas flowing out from the opening 44 is reduced. It is preferable to face the front side.
  • FIG. 5 is a vertical sectional view of a modification of the heat sink 40 corresponding to FIG. Since the basic configuration of the modified example of the heat sink 40 shown in FIG. 5 is the same as that of the heat sink 40 described above, different parts will be mainly described below.
  • the shape of the inner wall surface 44 a of the opening 44 is devised so that the flow of gas such as air flowing out from the opening 44 is easily directed forward.
  • the opening 44 is formed such that the inner wall surface 44a on the rear side is inclined forward from the lower side toward the upper side, and moves forward when the gas passes through the opening 44. I try to make it flow. In this way, even if the shade 70 is not disposed on the opening 44, the gas flowing out from the opening 44 can be directed forward.
  • the gas flowing out from the opening 44 is inclined so as to be inclined forward in the range from the portion of the lateral fin portion 48 positioned on the most front side to the inner wall surface 44 a of the opening 44. If the inner wall surface 44a on the rear side of the horizontal portion 42 of the base portion 41 that forms the opening 44 is an inclined surface that is inclined to the front side toward the upper side. Good.
  • FIG. 6 is a front view of the lamp unit 10 according to the second embodiment as viewed from the front side. 6 also omits the illustration of the lens 50 as in FIG. 2, the lens 50 is attached to the lens holder 50a in the same manner as shown in FIG.
  • the basic configuration of the lamp unit 10 of the second embodiment is the same as that of the first embodiment, different points will be mainly described below, and description of similar points may be omitted.
  • the second substrate 31 disposed on the inclined portion 43 of the base portion 41 is provided below the second light emitting chip 32, and a substrate opening through which gas can flow from the back side to the front side. 31a is formed.
  • the inclined portion 43 of the base portion 41 is also provided with an opening 43a through which gas can flow from the back surface side to the front surface side at a position corresponding to the substrate opening 31a of the second substrate 31.
  • the vertical fins 47 that can be seen through the substrate openings 31a and the openings 43a are not shown.
  • the gas flows out from the substrate opening 31a toward the lens 50, the gas can flow more efficiently toward the lens 50 than the gas flowing out from the upper side of the heat sink 40, and the cooling effect of the lens 50 is enhanced. be able to.
  • the substrate opening 31a is provided on the lower side of the second light emitting chip 32.
  • the substrate opening 31a is provided on the upper side. In this case, the lens 50 can be efficiently cooled.
  • the substrate opening 31a is provided in at least a part of the second substrate 31, and the opening 43a is provided at a position corresponding to the substrate opening 31a of the inclined portion 43 so that the gas flows out toward the lens 50 side.
  • the lens 50 and the 2nd light source part 30 can be cooled further, and heat dissipation can be improved further.
  • the cooling fan 80 may be omitted, and even when the cooling fan 80 is omitted, an upward air flow is generated when a gas such as air is warmed by the heat of the radiating fins (vertical fins 47 and horizontal fins 49).
  • a gas such as air is warmed by the heat of the radiating fins (vertical fins 47 and horizontal fins 49).
  • the gas flow as described above occurs naturally.
  • the horizontal width of the opening 44 may be changed as appropriate.
  • the second light source unit 30 can be efficiently cooled by setting the horizontal width of the opening 44 to be equal to or larger than the horizontal alignment width of the second light emitting chips 32 of the second light source unit 30 aligned in the horizontal direction. Therefore, the horizontal width of the openings 44 is preferably equal to or larger than the horizontal arrangement width of the second light emitting chips 32.
  • the vertical fins 47 are formed so as to extend into the openings 44, but it is not always necessary to form the vertical fins 47 into the openings 44. .
  • Lamp unit 20 1st light source part 21 1st board
  • substrate 22 1st light emission chip 23 1st light source 30 2nd light source part 31 2nd board

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  • 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)

Abstract

Afin de fournir une lampe de véhicule qui a une efficacité de refroidissement supérieure et qui comprend une première unité source de lumière ayant une première puce électroluminescente de type semi-conducteur et une seconde unité source de lumière ayant une seconde puce électroluminescente de type semi-conducteur, l'invention concerne un lampe de véhicule comprenant une première unité source de lumière qui a une première puce électroluminescente de type semi-conducteur, une seconde unité source de lumière qui est disposée davantage vers l'avant que la première unité source de lumière et qui a une seconde puce électroluminescente de type semi-conducteur, et un dissipateur thermique. Le dissipateur thermique est pourvu d'une partie de base et d'une partie ailette qui a des ailettes de libération de chaleur disposées sur un côté surface arrière de la partie de base. La partie de base est pourvue d'une section horizontale sur laquelle la première unité source de lumière est disposée, d'une section inclinée qui s'étend vers le bas à partir de l'avant de la section horizontale et sur laquelle la seconde unité source de lumière est disposée, et d'une ouverture qui est disposée entre la première unité source de lumière et la seconde unité source de lumière et à travers laquelle un gaz peut se déplacer. La partie ailette est pourvue d'une section ailettes verticales dans laquelle une pluralité d'ailettes verticales qui s'étendent vers l'arrière à partir de la surface arrière de la section inclinée sont agencées dans la direction horizontale. L'ouverture est prévue de façon à présenter une position correspondant à la section ailettes verticales.
PCT/JP2017/040489 2016-11-10 2017-11-09 Lampe de véhicule WO2018088500A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201780068492.XA CN109906339B (zh) 2016-11-10 2017-11-09 车辆用灯具
EP17870250.2A EP3540293B1 (fr) 2016-11-10 2017-11-09 Lampe de véhicule

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016219757A JP6711242B2 (ja) 2016-11-10 2016-11-10 車両用灯具
JP2016-219757 2016-11-10

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WO2018088500A1 true WO2018088500A1 (fr) 2018-05-17

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PCT/JP2017/040489 WO2018088500A1 (fr) 2016-11-10 2017-11-09 Lampe de véhicule

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EP (1) EP3540293B1 (fr)
JP (1) JP6711242B2 (fr)
CN (1) CN109906339B (fr)
WO (1) WO2018088500A1 (fr)

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WO2021024843A1 (fr) * 2019-08-06 2021-02-11 花王株式会社 Ensemble d'encres de gravure à base d'eau

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Publication number Priority date Publication date Assignee Title
JP7522645B2 (ja) * 2020-11-30 2024-07-25 株式会社小糸製作所 車両用灯具

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JP2011181314A (ja) * 2010-03-01 2011-09-15 Ichikoh Ind Ltd 車両用灯具
JP2015222671A (ja) * 2014-05-23 2015-12-10 スタンレー電気株式会社 車両用灯具
JP2016039020A (ja) 2014-08-07 2016-03-22 株式会社小糸製作所 車両用灯具

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CN109906339A (zh) 2019-06-18
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