Vehicle lamp fitting

Patent metadata

Field	Value
Publication number	US-9791614-B2
Application number	US-201414762962-A
Country	US
Kind code	B2
Filing date	Jan 30, 2014
Priority date	Feb 1, 2013
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

Problem: To provide a vehicle lamp fitting in which regularity of the strength or weakness of the emitted light is maintained and deterioration of appearance is suppressed. Solution: A vehicle lamp fitting 10 comprises a light guide 11 which guides light from an LED light source 12 and an LED light source 13 , the light guide 11 having entrance surfaces 110, 111 , emission surfaces R 1 to R 3 , and an internally reflecting surface 17 which causes light that has entered through the entrance surfaces 110, 111 to be reflected, and the internally reflecting surface 17 comprises a reflecting surface 141 which is provided in a first region 14 and which emits light from the LED light source 12 in a forward direction, a reflecting surface 151 which is provided in a second region 15 and which emits light from the LED light source 13 in the forward direction, and a reflecting surface 161 which is formed in a third region 16 between the first region 14 and the second region 15 and which limits the light intensity with which light from the LED light sources 12, 13 is emitted in the forward direction from the emission surface R 3.

First claim

The invention claimed is:

1. A vehicle lamp fitting comprising a first light source, a second light source and a light guide which guides light from the first light source and second light source,
wherein the light guide has
entrance surfaces through which light from the first light source and second light source enters,
an emission surface through which light that has entered through the entrance surfaces is emitted to the outside,
and an internally reflecting surface which causes light that has entered through the entrance surfaces to be reflected,
wherein the internally reflecting surface comprises
a plurality of first reflecting surfaces which are provided in a first region and which direct light from the first light source in a first direction so that light is emitted from the light guide,
a plurality of second reflecting surfaces which are provided in a second region and which direct light from the second light source in the first direction so that light is emitted from the light guide,
third reflecting surface which is formed in a third region between the first region and the second region, which is substantially parallel to the emission surface in the third region and which thereby limits the light intensity with which light from the first and second light sources is emitted in the first direction from the emission surface,
a plurality of fourth reflecting surfaces which are formed in the first region and are formed in such a way that light from the second light source is emitted in a second direction that is different from the first direction,
and a plurality of fifth reflecting surfaces which are formed in the second region and are formed in such a way that light from the first light source is emitted in the second direction, characterized in that
the first and fourth reflecting surfaces are formed alternately and consecutively in the first region,
the second and fifth reflecting surfaces are formed alternately and consecutively in the second region,
the third reflecting surface is formed at a joint portion between an end one of the first reflecting surfaces and an end one of the second reflecting surfaces; and
the light guide has a bent portion that is bent, and the third reflecting surface is formed in the bent portion.

2. The vehicle lamp fitting as claimed in claim 1 , wherein the third reflecting surface is formed in such a way that it does not emit light to the outside through the emission surface.

Assignees

• Ichikoh Industries Ltd

Inventors

• Nishihata Koji
• Matsumura Genta
• Hayashi Hideyuki

Classifications

• F21S43/245

  emitting light from one or more of its major surfaces · CPC title

• G02B6/0035

  provided on the surface of the light guide or in the bulk of it · CPC title

• G02B6/0038

  Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide · CPC title

• F21S43/14

  Light emitting diodes [LED] · CPC title

• B60Q1/0052 Primary

  concentric · CPC title