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1. WO2022009683 - VEHICLE LIGHTING UNIT

Publication Number WO/2022/009683
Publication Date 13.01.2022
International Application No. PCT/JP2021/023845
International Filing Date 23.06.2021
IPC
F21V 31/03 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
31Gas-tight or water-tight arrangements
03with provision for venting
F21V 19/00 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
19Fastening of light sources or lamp holders
F21V 29/503 2015.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
29Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
50Cooling arrangements
502characterised by the adaptation for cooling of specific components
503of light sources
F21V 29/67 2015.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
29Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
50Cooling arrangements
60characterised by the use of a forced flow of gas, e.g. air
67characterised by the arrangement of fans
F21V 29/76 2015.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
29Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
50Cooling arrangements
70characterised by passive heat-dissipating elements, e.g. heat-sinks
74with fins or blades
76with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
F21V 29/83 2015.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
29Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
50Cooling arrangements
70characterised by passive heat-dissipating elements, e.g. heat-sinks
83the elements having apertures, ducts or channels, e.g. heat radiation holes
Applicants
  • 株式会社小糸製作所 KOITO MANUFACTURING CO.,LTD. [JP]/[JP]
Inventors
  • 望月 一磨 MOCHIZUKI, Kazuma
  • 村松 鉄平 MURAMATSU, Teppei
Agents
  • 岩田 雅信 IWATA, Masanobu
  • 中川 裕人 NAKAGAWA, Hiroto
Priority Data
2020-11634606.07.2020JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) VEHICLE LIGHTING UNIT
(FR) UNITÉ D’ÉCLAIRAGE DE VÉHICULE
(JA) 車輌用灯具
Abstract
(EN) A vehicle lighting unit equipped with a circuit board to which a light source is mounted, a heat sink which releases heat produced when driving the light source, and has the circuit board attached to the front or rear surface thereof, and a cooling fan positioned above or below the circuit board and heat sink, wherein the cooling airflow produced by the cooling fan flows along the heat sink and the light source. As a result, it is possible to improve light source cooling performance while also improving compactness in the front-rear direction, because the cooling airflow produced by the cooling fan positioned above or below the circuit board and heat sink flows along the heat sink and the circuit board which is attached to the front or rear surface of the heat sink.
(FR) L’invention concerne une unité d’éclairage de véhicule équipée d’une carte de circuit imprimé sur laquelle est montée une source de lumière, d’un dissipateur thermique qui libère la chaleur produite lorsque la source de lumière est excitée, et sur la surface avant ou arrière duquel est fixée la carte de circuit imprimé, et un ventilateur de refroidissement positionné au-dessus ou en dessous de la carte de circuit imprimé et du dissipateur thermique, tel que le flux d’air de refroidissement produit par le ventilateur de refroidissement circule le long du dissipateur thermique et de la source de lumière. Ainsi, il est possible d’améliorer la performance de refroidissement de source de lumière tout en améliorant également la compacité dans la direction avant-arrière, parce que le flux d’air de refroidissement produit par le ventilateur de refroidissement positionné au-dessus ou en dessous de la carte de circuit imprimé et du dissipateur thermique circule le long du dissipateur thermique et de la carte de circuit imprimé qui est fixée à la surface avant ou arrière du dissipateur thermique.
(JA) 光源が搭載された回路基板と、前面又は後面に回路基板が取り付けられ光源の駆動時に発生する熱を放出するヒートシンクと、回路基板及びヒートシンクの上方又は下方に配置された冷却ファンとを備え、冷却ファンによって発生する冷却風がヒートシンクと光源に沿って流動される。これにより、回路基板及びヒートシンクの上方又は下方に配置された冷却ファンによって発生する冷却風がヒートシンクとヒートシンクの前面又は後面に取り付けられた回路基板とに沿って流動されるため、前後方向における小型化を図った上で光源に対する冷却性能の向上を図ることができる。
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