Vehicular lamp

Patent metadata

Field	Value
Publication number	US-9470390-B2
Application number	US-201514662654-A
Country	US
Kind code	B2
Filing date	Mar 19, 2015
Priority date	Mar 24, 2014
Publication date	Oct 18, 2016
Grant date	Oct 18, 2016

Abstract

A vehicular lamp includes a light source; and a light guide including a sub-light guiding part and a main light guiding part that are arranged adjacent to each other in a first direction. The sub-light guiding part extends in a second direction. The sub-light guiding part is configured such that light entering the sub-light guiding part from the light source is guided in the second direction and is emitted to the main light guiding part. The main light guiding part extends in a lamp front-rear direction and the second direction. The main light guiding part is configured such that the light that is emitted by the light source and enters the main light guiding part through the sub-light guiding part is internally reflected at a rear end face of the main light guiding part, and is emitted forward through a front end face of the main light guiding part.

First claim

What is claimed is:

1. A vehicular lamp comprising:
a light source; and
a light guide that guides light emitted by the light source and emits the light forward, wherein:
the light guide includes a sub-light guiding part and a main light guiding part that are arranged adjacent to each other in a first direction that intersects with a lamp front-rear direction;
the sub-light guiding part extends in a second direction that intersects with both of the lamp front-rear direction and the first direction;
the sub-light guiding part is configured such that the light that enters the sub-light guiding part from the light source is guided in the second direction and is emitted to the main light guiding part;
the main light guiding part extends in the lamp front-rear direction and the second direction; and
the main light guiding part is configured such that the light that is emitted by the light source and enters the main light guiding part through the sub-light guiding part is internally reflected at a rear end face of the main light guiding part, and is emitted forward through a front end face of the main light guiding part.

2. The vehicular lamp according to claim 1 , wherein:
the sub-light guiding part is configured such that the light emitted by the light source enters the sub-light guiding part through an end face of the sub-light guiding part in the second direction; and
the main light guiding part is disposed in a position away from the end face of the sub-light guiding part in the second direction.

3. The vehicular lamp according to claim 1 , wherein a width of the main light guiding part in the first direction is smaller than a width of the sub-light guiding part in the first direction.

4. The vehicular lamp according to claim 1 , wherein the sub-light guiding part is provided with a fitting leg portion that is used to fix the light guide.

5. The vehicular lamp according to claim 1 , wherein a shield member that shields a front face of the sub-light guiding part is provided in front of the sub-light guiding part.

6. The vehicular lamp according to claim 1 , wherein:
the sub-light guiding part is configured such that the light emitted by the light source enters the sub-light guiding part through an end face of the sub-light guiding part in the second direction;
the main light guiding part is disposed in a position away from the end face of the sub-light guiding part in the second direction;
a width of the sub-light guiding part in the first direction is decreased from the end face of the sub-light guiding part in the second direction to another end face of the sub-light guiding part in the second direction.

Assignees

• Koito Mfg Co Ltd

Inventors

• Ichinohe Fumitaka

Classifications

• F21S43/26

  Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255 · CPC title

• G02B6/0046

  Tapered light guide, e.g. wedge-shaped light guide · CPC title

• F21S48/2212

  Mechanical Engineering · mapped topic

• F21S48/215

  Mechanical Engineering · mapped topic

• F21S48/25

  Mechanical Engineering · mapped topic