VEHICULAR LAMP

• US 20150062946A1
• Filed: 08/28/2014
• Published: 03/05/2015
• Est. Priority Date: 09/02/2013
• Status: Active Grant

• Current Assignee: Koito Manufacturing Company Limited
• Original Assignee: Koito Manufacturing Company Limited
• Inventors: FUKAI, Kunio, SHIDO, Masaya, IYODA, Haruhiko, NAKADA, Asami, ONODA, Yukihiro
• Granted Patent: US 9,776,555 B2
• Time in Patent Office: Days
• US Class Current: 362/516
• CPC Class Codes: B60Q 1/26 the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
• CPC Class Codes: F21S 43/145 Surface emitters, e.g. organic light emitting diodes [OLED]
• CPC Class Codes: F21S 43/40 characterised by the combination of reflectors and refractors
• CPC Class Codes: F21Y 2105/00 Planar light sources
• CPC Class Codes: F21Y 2115/15 Organic light-emitting diodes [OLED]

Abstract

A vehicular lamp includes a planar light emitting member having an organic EL light emitting portion at part of a substrate, and a reflecting member and a half mirror that are disposed so as to face each other so that light emitted from the organic EL light emitting portion is reflected repeatedly while allowing part of the light to be transmitted to the front.

Claims

1. A vehicular lamp comprising:

a planar light emitting member having an organic EL light emitting portion at part of a substrate; and

a reflecting member and a half mirror that are disposed so as to face each other so that light emitted from the organic EL light emitting portion is reflected repeatedly while allowing part of the light to be transmitted to the front.

2. The vehicular lamp according to claim 1, wherein

the half mirror is disposed at the front of the planar light emitting member, and wherein

the half mirror has such a size that the half mirror does not conceal the whole or at least part of the organic EL light emitting portion when the vehicular lamp is observed from a front thereof.

3. The vehicular lamp according to claim 2, wherein

the reflecting member is a cathode layer that is situated at a portion of the planar light emitting member other than the organic EL light emitting portion.

4. The vehicular lamp according to claim 1, wherein

a portion of the planar light emitting member other than the organic EL light emitting portion is transparent, and wherein

the reflecting member is a mirror that is disposed at the rear of the planar light emitting member.

5. The vehicular lamp according to claim 4, wherein

the half mirror is disposed at the front of the planar light emitting member.

6. The vehicular lamp according to claim 4, wherein

the half mirror is formed on a rear surface of the planar light emitting member.

7. The vehicular lamp according to claim 4, wherein

the mirror has a curved surface.

8. The vehicular lamp according to claim 4, comprising further:

a second planar light emitting member having an organic EL light emitting portion and disposed at the front of the half mirror.

9. The vehicular lamp according to claim 1, wherein

the substrate is a light transmitting alumina substrate.