Lighting fixture for vehicle

Patent metadata

Field	Value
Publication number	US-9638386-B2
Application number	US-201314436178-A
Country	US
Kind code	B2
Filing date	Oct 10, 2013
Priority date	Oct 18, 2012
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

It is difficult to efficiently control and design light distribution in the conventional lighting fixture for a vehicle. The present invention is provided with a semiconductor-type light source ( 2 ) and a lens ( 3 ). The lens ( 3 ) is configured from a first lens part ( 31 ), a second lens part ( 32 ), and a third lens part ( 33 ). A light-collecting pattern (SP) is formed in the first lens part ( 31 ). A first diffusing pattern (DWP) is formed in the second lens part ( 32 ). A second diffusing pattern (UWP) is formed in the third lens part ( 33 ). As a result, light distribution can be efficiently controlled and designed in the present invention.

First claim

The invention claimed is:

1. A lighting fixture for a vehicle, comprising:
a semiconductor-type light source; and
a lens in which light from the semiconductor-type light source is made incident from an incident surface, and the light incident therefrom is emitted from an emission surface, wherein
the lens is composed of:
a first lens portion to form a light focusing pattern, the first lens portion being disposed only at one side of an upper part of the lens;
a second lens portion to form a first scattering pattern, the second lens portion being disposed only at a lower part of the lens; and
a third lens portion to form a second scattering pattern, the third lens portion being disposed only at another side of the upper part of the lens.

2. A lighting fixture for a vehicle, comprising:
a semiconductor-type light source; and
a lens in which light from the semiconductor-type light source is made incident from an incident surface, and the light incident therefrom is emitted from an emission surface, wherein
the lens is composed of:
a first lens portion to form a light focusing pattern in which light from the semiconductor-type light source is only focused by the first lens portion;
a second lens portion to form a first scattering pattern in which light from the semiconductor-type light source is only scattered by the second lens portion; and
a third lens portion to form a second scattering pattern in which light from the semiconductor-type light source is only scattered by the third lens portion.

3. The lighting fixture for a vehicle, according to claim 2 , wherein
the first lens portion is disposed at one side of an upper part of the lens,
the second lens portion is disposed at a lower part of the lens, and
the third lens portion is disposed at another side of the upper part of the lens.

4. A lighting fixture for a vehicle, comprising:
a semiconductor-type light source; and
a lens in which light from the semiconductor-type light source is made incident from an incident surface, and the light incident therefrom is emitted from an emission surface, wherein
the lens is composed of:
a first lens portion to form a light focusing pattern;
a second lens portion to form a first scattering pattern; and
a third lens portion to form a second scattering pattern, wherein the light focusing pattern is entirely within the first scattering pattern.

5. The lighting fixture for a vehicle, according to claim 4 , wherein
the first lens portion is disposed at one side of an upper part of the lens,
the second lens portion is disposed at a lower part of the lens, and
the third lens portion is disposed at another side of the upper part of the lens.

6. The lighting fixture for a vehicle, according to claim 4 , wherein the light focusing pattern has a higher luminous intensity than the first scattering pattern and the second scattering pattern.

7. The lighting fixture for a vehicle, according to claim 1 , wherein the first lens portion, the second lens portion and the third lens portion are divided sections of the incident surface, respectively.

Assignees

• Ichikoh Industries Ltd

Inventors

• Iwasaki Kazunori

Classifications

• F21V5/045

  the lens having discontinuous faces, e.g. Fresnel lenses · CPC title

• F21V5/08

  producing an asymmetric light distribution · CPC title

• F21S43/14

  Light emitting diodes [LED] · CPC title

• F21S41/26

  Elongated lenses · CPC title

• G02B19/0028

  refractive and reflective surfaces, e.g. non-imaging catadioptric systems · CPC title