Vehicle lamp

Patent metadata

Field	Value
Publication number	US-9664350-B2
Application number	US-201414273716-A
Country	US
Kind code	B2
Filing date	May 9, 2014
Priority date	May 17, 2013
Publication date	May 30, 2017
Grant date	May 30, 2017

Abstract

A vehicle lamp includes an optical unit and a light source control circuit part. The optical unit is unitized by attaching a light source and an optical member to an attachment part. In a state where the optical unit is unitized, the light source control circuit part is attachable to the attachment part in a direction in which the light source and the optical member are not disposed.

First claim

What is claimed is:

1. A vehicle lamp, comprising:
an optical unit comprising:
a light source,
an optical member, and
an attachment part comprising:
a first surface on which the light source is attached,
a second surface on which the optical member is attached, and
a third surface that faces an opposite direction to the first surface, and faces a different direction from the second surface; and

a light source control circuit part,
wherein the light source control circuit part is attachable to the third surface of the attachment part,which faces the opposite direction to the first surface,
wherein the optical member includes:
a lens disposed on a lamp front side of the light source, and
a reflector disposed so as to cover an upper portion of the light source,

wherein a heat sink is provided on an opposite side to the first surface of the attachment part on which the light source is attached, and
wherein the light source control circuit part is disposed adjacent o the heat sink on a lamp front side of the heat sink.

2. The vehicle lamp according to claim 1 ,
wherein the optical unit and the light source control circuit part are disposed in a lamp chamber formed by a lamp body and a transmissive cover, and
wherein a portion of the lamp body which faces the third surface is openable.

3. The vehicle lamp according to claim 2 , wherein a lamp-lower-side portion of the lamp body is openable.

4. The vehicle lamp according to claim 1 ,
wherein the light source control circuit part is attached to the third surface of the attachment part with a screw that is screwed into the attachment part in a direction perpendicular to the third surface.

5. The vehicle lamp according to claim 1 , further comprising:
a lamp body and a transmissive cover which define a lamp chamber,
wherein the optical unit and the light source control circuit part are disposed in the lamp chamber,
wherein one of the lamp body and the transmissive cover is formed with an opening at a portion facing the light source control circuit part attached to the third surface and includes a cover configured to open and close the opening, and
wherein the light source control circuit part is attachable through the opening while the cover opens the opening.

6. The vehicle lamp according to claim 1 ,
wherein the first surface faces in a direction different from the second surface.

7. The vehicle lamp according to claim 1 ,
wherein the first surface defines a plane different from the second surface.

8. A vehicle lamp, comprising:
an optical unit comprising:
a light source,
an optical member, and
an attachment part comprising:
a first surface on which the light source is attached,
a second surface on which the optical member is attached, and
a third surface that faces an opposite direction to the first surface, and faces a different direction from the second surface;

a light source control circuit part; and
a fan,
wherein the light source control circuit part is attachable to the third surface of the attachment part, which faces the opposite direction to the first surface,
wherein the light source control circuit part comprises:
a circuit part,
a heat radiation part, and
an engagement part,

wherein the fan is configured to blow air to the heat radiation part, and
wherein the fan is attached to the light source control circuit part via the engagement part of the light source control circuit part.

9. The vehicle lamp according to claim 8 , further comprising:
a heat sink disposed on the attachment part on a surface opposite to the first surface,
wherein the fan is further configured to blow air to the heat sink.

10. A vehicle lamp, comprising:
an optical unit comprising:
a light source,
an optical member, and
an attachment part comprising:
a first surface on which the light source is attached,
a second surface on which the optical member is attached, and
a third surface which faces a different direction from the first and second surfaces; and

a light source control circuit part comprising:
a circuit part, and
a heat radiation part,

wherein the light source control circuit part is attachable to the third surface of the attachment part,
wherein a heat sink is provided on a lower side of the first surface of the attachment part on which the light source is attached, and
wherein the light source control circuit part is disposed adjacent to the heat sink such that the heat radiation part is provided on a lower side of the circuit part.

Assignees

• Koito Mfg Co Ltd

Inventors

• Matsumoto Hiroki

Classifications

• F21S45/49

  Attachment of the cooling means · CPC title

• F21S41/295

  specially adapted to projection lenses · CPC title

• F21S41/192 Primary

  Details of lamp holders, terminals or connectors · CPC title

• F21S48/321

  Mechanical Engineering · mapped topic

• F21S48/1109 Primary

  Mechanical Engineering · mapped topic