Title:
VEHICLE LIGHTING DEVICE
Document Type and Number:
Japanese Patent JP2020121581
Kind Code:
A
Abstract:
To provide a vehicle lighting device that can inhibit deterioration of light guiding performance of a light guiding member and can obtain a desired lightening effect.SOLUTION: A lighting device includes: a light source 21; a light guiding member 30 configured to guide light from the light source 21 inside thereof and including a light emitting surface 32 emitting the light inside the light guiding member 30 to the outside of the light guiding member 30; and a light transmission member 50 including a light incident surface 51 which is in contact with the light emitting surface 32 and into which the light from the light emitting surface 32 is input, and a light emitting surface 52 emitting the light input into the light transmission member 50 from the light incident surface 51 to the outside of the light transmission member 50. The light emitting surface 52 includes a refraction portion 55 refracting the light. An index of refraction of the light guiding member 30 is higher than that of the light transmission member 50.SELECTED DRAWING: Figure 4
Inventors:
TSUTSUMI AIKO
YOKOI MASASHI
TAWARA HIROYASU
YOKOI MASASHI
TAWARA HIROYASU
Application Number:
JP2019012952A
Publication Date:
August 13, 2020
Filing Date:
January 29, 2019
Export Citation:
Assignee:
TOYOTA BOSHOKU CORP
International Classes:
B60Q3/64; B60Q3/217; B60Q3/267; B60Q3/54; F21V8/00
Attorney, Agent or Firm:
Akatsuki Joint Patent Office