Vehicle lighting device

Patent metadata

Field	Value
Publication number	US-9482405-B2
Application number	US-201514681582-A
Country	US
Kind code	B2
Filing date	Apr 8, 2015
Priority date	Apr 9, 2014
Publication date	Nov 1, 2016
Grant date	Nov 1, 2016

Abstract

A present invention includes a lamp housing, a lamp lens, a first lamp unit, and a second lamp unit. The first lamp unit includes a semiconductor-type light source, and a light guide member. The light guide member has an exit surface, and a reflection surface. A plane exit surface is provided in a part of the exit surface for blocking a part of a radiated light L 4 from the second lamp unit, and a plane incident surface is provided in a part of the reflection surface for blocking a part of the radiated light L 4 from the second lamp unit. As a result, the present invention is able to minimize an optical loss of the radiated light L 4 , even when the light guide member is located at a position for blocking a part of the radiated light L 4 from the second lamp unit.

First claim

What is claimed is:

1. A vehicle lighting device comprising:
a lamp housing and a lamp lens that partition a lamp chamber; and
a first lamp unit and a second lamp unit that are arranged in the lamp chamber,
wherein the first lamp unit comprises a light source, and a light guide member, and
the light guide member forms a rod shape for guiding light by utilizing total reflection inside, comprises
an incident surface to incident light from the light source,
an exit surface to emit incident light, and
a reflection surface to reflect incident light to the exit surface,
the light guide member is located in front of a light radiating direction of the second lamp unit, and
a plane is provided at a position for blocking a part of radiated light from the second lamp unit.

2. The vehicle lighting device according to claim 1 , wherein
the plane is provided in at least one of a part for blocking a part of the radiated light of the exit surface of the light guide member, and a part for blocking a part of the radiated light of the reflection surface of the light guide member.

3. The vehicle lighting device according to claim 1 , wherein
the exit surface comprises an arcuate surface having a substantially arcuate cross section vertical or substantially vertical to a light guide direction of the light guide member,
the the reflection surface comprises a plane having a substantially linear cross section vertical or substantially vertical to a light guide direction of the light guide member,
a step surface is provided between the reflection surface and the reflection surface,
a prism is comprised of the reflection surface and the step surface, and
a plane exit surface for emitting the radiated light is provided in at least a part of the arcuate exit surface for blocking a part of the radiated light, or a plane incident surface to incident the radiated light is provided in at least a part of the prism for blocking a part of the radiated light.

4. The vehicle lighting device according to claim 3 , wherein
the plane incident surface is provided at least between the part of the prism for blocking a part of the radiated light and the prism.

5. The vehicle lighting device according to claim 3 , wherein
a plane part is provided between the prism from a part of the incident surface to a part for blocking a part of the radiated light and the prism, and
the plane increases as separating from the incident surface.

Assignees

• Ichikoh Industries Ltd

Inventors

• Koshiro Hiroshi

Classifications

• F21S48/236

  Mechanical Engineering · mapped topic

• F21S48/24

  Mechanical Engineering · mapped topic

• F21S48/2237 Primary

  Mechanical Engineering · mapped topic

• B60Q1/0058

  Stacked, i.e. one lamp located behind the other in the optical axis direction · CPC title

• B60Q1/0041

  of several lamps in relation to each other · CPC title