Vehicle lamp

Patent metadata

Field	Value
Publication number	US-12366338-B2
Application number	US-202218574087-A
Country	US
Kind code	B2
Filing date	Jun 29, 2022
Priority date	Jun 30, 2021
Publication date	Jul 22, 2025
Grant date	Jul 22, 2025

Abstract

Provided is a vehicle lamp which forms a travel light distribution pattern in which occurrence of a dark area between low and high beam light distributions is suppressed. A projection lens is divided into a plurality of lens areas, each of which has a different focal point position, and one second lens area is a low lens area. A low beam light source module is set such reflected light from the reflector is incident on a back surface of the second lens area, and a low beam light distribution is emitted from an area front surface. A high beam light source module is set such that emitted light from a high beam light source is directly incident on a lens back surface of the projection lens, and a high beam light distribution for each area is emitted from each of a plurality of area front surfaces.

First claim

The invention claimed is:

1. A vehicle lamp comprising:
a projection lens;
a low beam light source module; and
a high beam light source module, wherein
the projection lens is divided into a plurality of lens areas, each of which has a different focal point position, and one of the plurality of lens areas is a low lens area with a focal point where parallel light incident from a front surface of the projection lens is converged,
the low beam light source module has a low beam light source and a reflector which reflects emitted light from the low beam light source, and is set such that reflected light from the reflector is incident on a back surface of the low lens area, and a low beam light distribution is emitted from an area front surface, and
the high beam light source module has a high beam light source, and is set such that emitted light from the high beam light source is directly incident on a lens back surface of the projection lens, and a high beam light distribution for each of the plurality of lens areas is emitted from each of a plurality of area front surfaces,
wherein the projection lens is divided into at least a first lens area, a second lens area, and a third lens area from a top as a plurality of high lens areas where the emitted light from the high beam light source is directly incident, and
the second lens area of the projection lens is the low lens area where the reflected light from the reflector is incident, and
wherein
in the projection lens, an area further below the third lens area, or a lower area obtained when the third lens area is divided into an upper part and a lower part is a fourth lens area that forms an upper light distribution of a high beam light distribution pattern.

2. The vehicle lamp according to claim 1 , wherein
the high beam light source module includes a reflective member disposed above and in front of the high beam light source, and having a reflective surface which reflects the emitted light from the high beam light source toward the low lens area.

3. The vehicle lamp according to claim 1 , wherein
the high beam light source is provided on a lens facing surface of a substrate, the substrate having the lens facing surface and a lens optical axis surface,
the low beam light source is provided on the lens optical axis surface of the substrate behind the high beam light source, and
the reflector is disposed at such a position as to face a light emitting surface of the low beam light source, and not to block the emitted light from the high beam light source directly toward the lens back surface of the projection lens.

4. The vehicle lamp according to claim 1 , wherein
in the high beam light source, a light emitting surface facing the lens back surface of the projection lens is located below and behind the focal point of the low lens area, and is disposed on a lens optical axis center line of the projection lens.

5. The vehicle lamp according to claim 1 , comprising:
wherein the reflector provided in the low beam light source module includes a first reflector and a second reflector,
the high beam light source is disposed to face the projection lens, and is provided on a substrate having a lens facing surface,
the low beam light source is located below the high beam light source and provided on the same plane as the lens facing surface, and
the first reflector and the second reflector are each disposed at such a position as not to block the emitted light from the high beam light source directly toward the lens back surface of the projection lens.

6. A vehicle lamp comprising:
a projection lens;
a low beam light source module; and
a high beam light source module, wherein
the projection lens is divided into a plurality of lens areas, each of which has a different focal point position, and one of the plurality of lens areas is a low lens area with a focal point where parallel light incident from a front surface of the projection lens is converged,
the low beam light source module has a low beam light source and a reflector which reflects emitted light from the low beam light source, and is set such that reflected light from the reflector is incident on a back surface of the low lens area, and a low beam light distribution is emitted from an area front surface, and
the high beam light source module has a high beam light source, and is set such that emitted light from the high beam light source is directly incident on a lens back surface of the projection lens, and a high beam light distribution for each of the plurality of lens areas is emitted from each of a plurality of area front surfaces,
wherein
in the high beam light source, a light emitting surface facing the lens back surface of the projection lens is located below and behind the focal point of the low lens area, and is disposed on a lens optical axis center line of the projection lens.

7. The vehicle lamp according to claim 6 , wherein
the projection lens is divided into at least a first lens area, a second lens area, and a third lens area from a top as a plurality of high lens areas where the emitted light from the high beam light source is directly incident, and
the second lens area of the projection lens is the low lens area where the reflected light from the reflector is incident.

8. The vehicle lamp according to claim 3 , wherein
in the projection lens, an area further below the third lens area, or a lower area obtained when the third lens area is divided into an upper part and a lower part is a fourth lens area that forms an upper light distribution of a high beam light distribution pattern.

9. The vehicle lamp according to claim 6 , wherein
the high beam light source module includes a reflective member disposed above and in front of the high beam light source, and having a reflective surface which reflects the emitted light from the high beam light source toward the low lens area.

10. The vehicle lamp according to claim 6 , comprising:
wherein the reflector provided in the low beam light source module includes a first reflector and a second reflector,
the high beam light source is disposed to face the projection lens, and is provided on a substrate having a lens facing surface,
the low beam light source is located below the high beam light source and provided on the same plane as the lens facing surface, and
the first reflector and the second reflector are each disposed at such a position as not to block the emitted light from the high beam light source directly toward the lens back surface of the projection lens.

11. The vehicle lamp according to claim 6 , wherein
the high beam light source is provided on a lens facing surface of a substrate, the substrate having the lens facing surface and a lens optical axis surface,
the low beam light source is provided on the lens optical axis surface of the substrate behind the high beam light source, and
the reflector is disposed at such a position as to face a light emitting surface of the low beam light source, and not to block the emitted light from the high beam light source directly toward the lens back surface of the projection lens.

12. A vehicle lamp comprising:
a projection lens;
a low beam light source module; and
a high beam light source module,
wherein the projection lens is divided into a plurality of lens areas, each of which has a different focal point position, and one of the plurality of lens areas is a low lens area with a focal point where parallel light incident from a front surface of the projection lens is converged,
the low beam light source module has a low beam light source and a reflector which reflects emitted light from the low beam light source, a

Assignees

• Ichikoh Industries Ltd

Inventors

• Imamura Hiroya
• Ohashi Yuji
• Suzuki Eiji

Classifications

• F21S41/321

  the reflector being a surface of revolution or a planar surface, e.g. truncated · CPC title

• F21S41/255

  Lenses with a front view of circular or truncated circular outline · CPC title

• F21S41/365

  successively reflecting the light · CPC title

• F21S41/663

  by switching light sources (by switching incandescent light sources F21S41/162) · CPC title

• F21W2102/13

  for high-beam region or low-beam region · CPC title