Title:
自動車用灯火器
Document Type and Number:
Japanese Patent JP7420359
Kind Code:
B2
Abstract:
To provide a lighting device for a vehicle that can improve anti-fogging properties by discharging water vapor and improving air convection inside a lamp chamber concurrently.SOLUTION: A lighting device for a vehicle includes: a cone-shaped recess part 4 formed at an inner surface of a housing 3 for storing a light emitter; and a respiration hole 8 provided in a bottom part 6 of the recess part 4 to communicate between the inside and the outside of the housing 3, where the cone-shaped recess part 4 increases a current speed of air discharged with water vapor from the respiration hole 8, and the increased current speed of the air passing through the recess part 4 and the respiration hole 8 improves air convection inside a lamp chamber due to heat generated by the light emitter.SELECTED DRAWING: Figure 3
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Inventors:
Takanori Hayashida
Application Number:
JP2018244443A
Publication Date:
January 23, 2024
Filing Date:
December 27, 2018
Export Citation:
Assignee:
Daihatsu Motor Co., Ltd.
International Classes:
F21S45/30; F21V31/03
Domestic Patent References:
| JP2007220518A | ||||
| JP2014146511A |
Foreign References:
| CN207080938U | ||||
| US20180106457 |
Attorney, Agent or Firm:
Shuzo Hiranae
Takayasu Kobane
Kiyotaka Fujiwara
Takayasu Kobane
Kiyotaka Fujiwara