Title:
HEAT RADIATION STRUCTURE OF VEHICULAR LIGHTING FIXTURE
Document Type and Number:
Japanese Patent JP2017041366
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a heat radiation structure of a vehicular lighting fixture capable of securing predetermined heat radiation performance by preventing a backflow of hot air into a duct during stopping time of a vehicle, with a simple structure.SOLUTION: A heat radiation structure of a vehicular lighting fixture 1 includes an LED (light source) 7, and a heat radiation part 12 for radiating heat generating in the LED 7. In the heat radiation structure of the vehicular lighting fixture 1, the heat radiation part 12 is internally provided in a duct 13 whose one part extends vertically, and by the air flowing in from a suction port 13a which opens at one end of the duct 13 and is exhausted from an exhaust port 13b which opens at the other end of the duct 13, heat radiation of the heat radiation part 12 is facilitated, and the LED 7 is cooled. At the other end of the duct 13, a tapered cylindrical throttle 14 is provided as a backflow prevention structure.SELECTED DRAWING: Figure 1
Inventors:
AKISADA KENJI
Application Number:
JP2015162551A
Publication Date:
February 23, 2017
Filing Date:
August 20, 2015
Export Citation:
Assignee:
STANLEY ELECTRIC CO LTD
International Classes:
F21S8/10; F21V29/503; F21V29/76; F21V29/83
Attorney, Agent or Firm:
Ryoichi Yamashita
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