Vehicular lamp

Patent metadata

Field	Value
Publication number	US-10018322-B2
Application number	US-201514837675-A
Country	US
Kind code	B2
Filing date	Aug 27, 2015
Priority date	Aug 29, 2014
Publication date	Jul 10, 2018
Grant date	Jul 10, 2018

Abstract

A vehicular lamp includes a lamp body, a translucent outer cover, and a planar light source including a substrate and an organic EL light emitting layer formed on one side surface of the substrate. The planar light source has a bent portion in which the substrate having flexibility is bent at a predetermined position in a portion formed with the organic EL light emitting layer such that one end portion of the substrate is directed to one of a side of the outer cover and a side opposite to the outer cover, or the planar light source is provided such that at least part of an outer peripheral end of the organic EL light emitting layer emits light.

First claim

What is claimed is:

1. A vehicular lamp comprising:
a lamp body;
a translucent outer cover that defines a first lamp chamber and a second lamp chamber between the outer cover and the lamp body, the first and second lamp chambers defined by a wall provided between the first and second lamp chambers, the first and second lamp chambers being adjacent to each other;
a planar light source disposed in the lamp chamber and having a light emitting surface opposing the outer cover, wherein:
the planar light source includes a flexible substrate and an organic EL light emitting layer formed on one side surface of the flexible substrate, and
the planar light source has a bent portion in which the flexible substrate is bent at a predetermined position in a portion formed with the organic EL light emitting layer such that one end portion of the flexible substrate is directed toward one of a direction away from a light-emitting surface of the outer cover and a direction approaching the light-emitting surface of the outer cover, and
wherein:
the planar light source includes:
a first planar light source provided in the first lamp chamber and having a first bent portion; and
a second planar light source provided in the second lamp chamber and having a second bent portion, and

the first planar light source and the second planar light source are provided such that the first bent portion of the first planer light source and the second bent portion of the second planer light source are spaced apart from each other by the wall provided between the first and second lamp chambers and face each other.

2. A vehicular lamp comprising:
a lamp body;
a translucent outer cover that defines a lamp chamber between the outer cover and the lamp body;
a planar light source disposed in the lamp chamber and having a first substrate and a first organic EL light emitting layer formed on one side surface of the first substrate; and
a main light source having a second substrate and a second organic EL light emitting layer formed on a first side surface of the second substrate, the first substrate extending in a second direction orthogonal to a first direction in which the second substrate extends,
wherein:
the first and the second substrates are spaced apart from each other,
a second side surface opposite to the first side surface of the second substrate, on which the second organic EL light emitting layer is formed, faces the outer cover, and
the planar light source is provided such that at least part of an outer peripheral end of the first organic EL light emitting layer emits light.

3. The vehicular lamp according to claim 2 , wherein
the planar light source is provided at a position corresponding to one end portion of the main light source.

4. The vehicular lamp according to claim 2 , wherein:
one side surface of the first organic EL light emitting layer functions as a main light emitting surface; and
the at least part of the outer peripheral end of the second organic EL light emitting layer functions as a sub-light emitting surface.

5. The vehicular lamp according to claim 2 , wherein the planar light source is provided such that the at least part of the outer peripheral end of the first organic EL light emitting layer is directed to a side of the outer cover.

6. The vehicular lamp according to claim 2 , wherein the first substrate extends in a vehicle longitudinal direction and the at least part of the outer peripheral end of the first organic EL light emitting layer emits light in the vehicle longitudinal direction.

7. The vehicular lamp according to claim 2 , wherein the first substrate extends along a first plane and the second substrate extends along a second plane, which extends orthogonal to the first plane.

8. The vehicular lamp according to claim 3 , wherein:
the main light source includes a first main light source and a second main light source positioned adjacent to each other;
the planar light source includes a third planar light source and a fourth planar light source positioned adjacent to each other; and
the third planar light source is provided at a position corresponding to one end portion of the first main light source and the fourth planar light source is provided at a position corresponding to one end portion of the second main light source.

9. The vehicular lamp according to claim 4 , further comprising an optical member that directs light emitted from the main light emitting surface and light emitted from the sub-light emitting surface to the same direction.

Assignees

• Koito Mfg Co Ltd

Inventors

• Ito Toru
• Ito Yoshiro
• Shido Masaya

Classifications

• F21V19/00 Primary

  Fastening of light sources or lamp holders (fastening electric light source solely by the coupling device H01R33/00 {; special means for attaching candle to candle holder F21V35/003}) · CPC title

• F21S43/16

  Light sources where the light is generated by photoluminescent material spaced from a primary light generating element · CPC title

• F21S43/19

  Attachment of light sources or lamp holders · CPC title

• F21S43/145

  Surface emitters, e.g. organic light emitting diodes [OLED] · CPC title

• F21S48/211

  Mechanical Engineering · mapped topic