Title:
車両用ランプ
Document Type and Number:
Japanese Patent JP7336375
Kind Code:
B2
Abstract:
To provide a vehicular lamp preventing light unevenness at an emission surface portion of a light guide body in a lamp equipped with the light guide body.SOLUTION: A vehicular lamp is equipped with a light guide body (edge light guide) 21 leading and emitting light incident from a light source 20. The light guide body 21 is equipped with an incident surface portion 211 on which the light of the light source 20 is incident, an emission surface portion 213 emitting the light, and a reflection surface portion 212 internally reflecting the light toward the emission surface portion 213. The reflection surface portion 212 is composed of a plurality of reflection surface portions 212 adjacently disposed, and is equipped with a reflection step 218 internally reflecting the light to a border surface 217 of each reflection surface portion 212 while dispersing or diffusing the light. In the reflection step 218, a plurality of semi-cylindrical optical steps is aligned. The reflection step 218 makes the brightness of the light emitted from the emission surface portion 213 uniform.SELECTED DRAWING: Figure 10
Inventors:
Shohei Kanezuka
Haruka Morii
Haruka Morii
Application Number:
JP2019224321A
Publication Date:
August 31, 2023
Filing Date:
December 12, 2019
Export Citation:
Assignee:
Koito Manufacturing Co., Ltd.
International Classes:
F21S43/239; F21S43/241; F21S43/249; F21S43/27; F21V8/00
Domestic Patent References:
| JP2016085829A | ||||
| JP2019067521A | ||||
| JP2016039121A | ||||
| JP2013222553A | ||||
| JP2003100114A | ||||
| JP2015008081A | ||||
| JP2017147105A | ||||
| JP2012190762A | ||||
| JP2012064533A |
Foreign References:
| US20160311363 |
Attorney, Agent or Firm:
Suzuki Akio