Vehicular lamp

Patent metadata

Field	Value
Publication number	US-9062844-B2
Application number	US-201313794373-A
Country	US
Kind code	B2
Filing date	Mar 11, 2013
Priority date	Mar 14, 2012
Publication date	Jun 23, 2015
Grant date	Jun 23, 2015

Abstract

A clearance lamp ( 20 ) including a light source ( 21 ) and a light guide ( 23 ) that allows light from the light source ( 21 ) to enter from an end face of the light guide ( 23 ) and emits the light forward from an emitting surface ( 23 b ) while guiding the light in the interior of the light guide ( 23 ). The emitting surface ( 23 b ) extends along a direction in which the light guide ( 23 ) extends. The light guide ( 23 ) includes steps ( 23 c ) that reflect the light traveling through the light guide toward the emitting surface ( 23 b ), and it further includes a light-emitting surface ( 23 d ) that is formed at a position different from a position of the light-emitting surface ( 23 b ) and emits the light traveling through the light guide to the outside of the light guide.

First claim

The invention claimed is:

1. A vehicular lamp comprising:
a light source mounting portion on which a light source is mounted;
a light guide for allowing light from the light source to enter from an end face of the light guide and emitting the light forward from an emitting surface thereof while guiding the light in an interior thereof, the emitting surface extending along a direction in which the light guide extends, wherein the light guide is formed with:
steps that reflect light traveling through the light guide toward the emitting surface; and
a light-emitting surface formed at a position different from a position of the emitting surface, the light-emitting surface emitting the light traveling through the light guide to an outside of the light guide; and

a first reflecting portion for reflecting at least a part of the light, which is emitted from the light-emitting surface of the light guide, toward the light guide.

2. The vehicular lamp according to claim 1 , wherein the light-emitting surface is formed by embossing a portion of a peripheral surface of the light guide.

3. The vehicular lamp according to claim 1 , wherein the first reflecting portion is embossed.

4. The vehicular lamp according to claim 1 , further comprising a second reflecting portion for reflecting a part of light, which is reflected by the first reflecting portion, toward the light guide.

5. The vehicular lamp according to claim 4 , wherein the second reflecting portion is embossed.

6. The vehicular lamp according to claim 3 , further comprising a second reflecting portion for reflecting a part of light, which is reflected by the first reflecting portion, toward the light guide.

7. The vehicular lamp according to claim 6 , wherein the second reflecting portion is embossed.

Assignees

• Saito Junichi
• Koito Mfg Co Ltd

Inventors

• Saito Junichi

Classifications

• F21S43/247

  with a single light source being coupled into the light guide · CPC title

• F21S41/24 Primary

  Light guides · CPC title

• F21S43/40

  characterised by the combination of reflectors and refractors · CPC title

• F21S43/237

  rod-shaped · CPC title

• F21S43/14

  Light emitting diodes [LED] · CPC title