Lighting apparatus and automobile including the same

Patent metadata

Field	Value
Publication number	US-10052999-B2
Application number	US-201715722251-A
Country	US
Kind code	B2
Filing date	Oct 2, 2017
Priority date	May 9, 2014
Publication date	Aug 21, 2018
Grant date	Aug 21, 2018

Abstract

A lighting apparatus for vehicle use that projects light forward includes a base, a low beam lamp including a low beam light emitter disposed on the base, a first light emitter disposed on the base and a second light emitter. A lighting controller turns on the low beam light emitter, the first light emitter, and the second light emitter, and an optical system reflects light from the first and second light emitters at least above and below the first and second light emitters, to produce a light distribution pattern. Centers of areas illuminated by the light from the first and second light emitters are horizontally spaced from each other.

First claim

What is claimed is:

1. A lighting apparatus for vehicle use that projects light forward, the lighting apparatus comprising:
a base;
a low beam lamp including a low beam light emitter disposed on the base;
a first light emitter disposed on the base;
a second light emitter;
a lighting controller configured to turn on the low beam light emitter, the first light emitter, and the second light emitter; and
an optical system that reflects light from the first light emitter and light from the second light emitter, at least above and below the first light emitter and the second light emitter, to produce a light distribution pattern,
wherein a center of an area located in a predetermined position in front of and illuminated by the light from the first light emitter and a center of an area located in a predetermined position in front of and illuminated by the light from the second light emitter are horizontally spaced from each other.

2. A lighting apparatus for vehicle use that projects light forward, the lighting apparatus comprising:
a base;
a low beam lamp including a low beam light emitter disposed on the base;
a first light emitter disposed on the base;
a second light emitter;
a lighting controller configured to turn on the low beam light emitter, the first light emitter, and the second light emitter; and
an optical system that reflects light from the first light emitter and light from the second light emitter, at least above and below the first light emitter and the second light emitter, to produce a light distribution pattern,
wherein a center of an area illuminated by the light from the first light emitter and a center of an area illuminated by the light from the second light emitter are horizontally spaced from each other, and
wherein a horizontal width of the area illuminated by the light from the second light emitter is greater than a horizontal width of the area illuminated by the light from the first light emitter.

3. The lighting apparatus according to claim 1 ,
wherein the center of the area illuminated by the light from the second light emitter is located a predetermined distance away from an intersection of a vertical line equivalent to a vertical plane passing through an optical axis of the lighting apparatus and a horizontal line at a distance of the lighting apparatus from the ground in a direction toward an oncoming traffic lane.

4. The lighting apparatus according to claim 1 ,
wherein an area defined by the light distribution pattern produced by the first light emitter and the second light emitter includes an area above an area illuminated by light from the low beam light emitter.

5. A lighting apparatus for vehicle use that projects light forward, the lighting apparatus comprising:
a base;
a low beam lamp including a low beam light emitter disposed on the base;
a first light emitter disposed on the base;
a second light emitter;
a lighting controller configured to turn on the low beam light emitter, the first light emitter, and the second light emitter;
an optical system that reflects light from the first light emitter and light from the second light emitter, at least above and below the first light emitter and the second light emitter, to produce a light distribution pattern, wherein a center of an area illuminated by the light from the first light emitter and a center of an area illuminated by the light from the second light emitter are horizontally spaced from each other;
a first collimating lens that collimates the light from the first light emitter; and
a second collimating lens that collimates the light from the second light emitter,
wherein an optical axis of the second collimating lens is oblique with respect to an optical axis of the first collimating lens.

6. The lighting apparatus according to claim 5 ,
wherein the first collimating lens is substantially circular in a front view, and
the second collimating lens is substantially elliptical in a front view.

7. The lighting apparatus according to claim 1 ,
wherein the first light emitter comprises a plurality of first light emitters, and
the plurality of first light emitters are horizontally offset from each other.

8. The lighting apparatus according to claim 7 ,
wherein the plurality of first light emitters are vertically offset from each other.

9. The lighting apparatus according to claim 1 ,
wherein the first light emitter and the second light emitter are vertically offset from each other.

10. An automobile comprising:
the lighting apparatus according to claim 1 ;
a vehicle body including the lighting apparatus in a front of the vehicle body portion; and
an engine controller connected to the lighting controller.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Kanayama Yoshihiko
• Aoki Hiro
• Kai Makoto
• Ogata Tomoyuki

Classifications

• F21S45/48

  with means for conducting heat from the inside to the outside of the lighting devices, e.g. with fins on the outer surface of the lighting device · CPC title

• F21S41/151

  arranged in one or more lines · CPC title

• F21S41/148

  the main emission direction of the LED being perpendicular to the optical axis · CPC title

• F21S41/24

  Light guides · CPC title

• F21W2107/10

  for land vehicles · CPC title