Title:
LAMP TOOL FOR VEHICLE
Document Type and Number:
Japanese Patent JP2009266573
Kind Code:
A
Abstract:
To prevent temperature rise of a lamp unit using LEDs, even if heat dissipation capacity of a heat sink is temporarily decreased.
A lamp unit 17 with light-emitting diodes 19 as a light source is mounted on a thermally conductive base material 18, and a lamp room 14 housing the lamp unit 17 is structured of a housing 12. At least part of the heat sink 26 is arranged outside the housing 12, and running wind is blown at the heat sink 26 through a ventilating channel 27 at running of a vehicle. Further, phase changing materials 281, 282 are provided in a state in contact with the base material 18 and the heat sink 26 for easing temperature changes outside.
Inventors:
KATO TAKEO
UENO TAKASHI
INOUE HIDEO
MIZUKAMI TAKAO
MATSUBA YOSHIAKI
HIRATA DAISUKE
UENO TAKASHI
INOUE HIDEO
MIZUKAMI TAKAO
MATSUBA YOSHIAKI
HIRATA DAISUKE
Application Number:
JP2008114196A
Publication Date:
November 12, 2009
Filing Date:
April 24, 2008
Export Citation:
Assignee:
HARISON TOSHIBA LIGHTING CORP
International Classes:
F21V29/00; F21W101/10; F21Y101/02
Attorney, Agent or Firm:
Saichi Suyama
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