Title:
車輌用灯具
Document Type and Number:
Japanese Patent JP6868974
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To suppress generation of luminance unevenness in a light guide body by controlling light emitted from an emission surface of a bent part.SOLUTION: A vehicular lighting fixture 1 includes a light guide body 7 which has: an incident surface 13a for allowing the light emitted from a light source 18 to enter; a reflection surface 11 for internally reflecting the light which has entered from the incident surface; and an emission surface 12 for emitting the light internally reflected on the reflection surface. The light guide body includes: a bent part 14 in which at least one part of the emission surface is formed and which is bent in a predetermined state; and a step forming part 13 in which a light control step 13b is formed and whose bending degree is smaller than that of the bent part. At least one part of the light controlled in the light control step is emitted from the emission surface of the bent part.SELECTED DRAWING: Figure 5
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Inventors:
Katsuaki Otawa
Nonaka Hayao
Takenaga Kohei
Nonaka Hayao
Takenaga Kohei
Application Number:
JP2016115251A
Publication Date:
May 12, 2021
Filing Date:
June 09, 2016
Export Citation:
Assignee:
Koito Manufacturing Co., Ltd.
International Classes:
F21S43/237; F21S43/14; F21S43/239; F21S43/245
Domestic Patent References:
| JP2015204275A | ||||
| JP2013171678A | ||||
| JP2013229153A | ||||
| JP2014041787A | ||||
| JP2016081598A | ||||
| JP2016046120A | ||||
| JP2014235819A | ||||
| JP2010080443A | ||||
| JP2014116142A |
Foreign References:
| DE10356483A1 |
Attorney, Agent or Firm:
Masanobu Iwata
Hiroto Nakagawa
Nobuo Suzuki
Atsuo Waki
Hiroto Nakagawa
Nobuo Suzuki
Atsuo Waki