Marker lamp

Patent metadata

Field	Value
Publication number	US-2016146441-A1
Application number	US-201514927809-A
Country	US
Kind code	A1
Filing date	Oct 30, 2015
Priority date	Nov 20, 2014
Publication date	May 26, 2016
Grant date	—

Abstract

According to the present disclosure, a first optical system includes a first light source and emits a first illumination light. A second optical system includes a second light source and emits a second illumination light. A controller controls turning-on/off of the first light source and the second light source. The first optical system and the second optical system are configured such that a first illumination standard is satisfied by the first illumination light and the second illumination light. The first optical system is configured such that a second illumination standard is satisfied by the first illumination light. The controller allows the turning-on of the first light source when the turning-on of the second light source is disabled, and prohibits the turning-on of the second light source when the turning-on of the first light source is disabled.

First claim

What is claimed is:

1 . A marker lamp mounted on a vehicle, comprising:
a first optical system including a first light source and configured to emit a first illumination light; a second optical system including a second light source and configured to emit a second illumination light; and a controller configured to control turning-on/off of the first light source and the second light source, wherein at least a part of an illumination range where a predetermined light intensity is obtained by the second illumination light is positioned outside an illumination range where the predetermined light intensity is obtained by the first illumination light, the first optical system and the second optical system are configured such that a first illumination standard is satisfied by the first illumination light and the second illumination light, the first optical system is configured such that a second illumination standard is satisfied by the first illumination light, and the controller allows the turning-on of the first light source when the turning-on of the second light source is disabled, and prohibits the turning-on of the second light source when the turning-on of the first light source is disabled.

2 . The marker lamp of claim 1 , wherein a maximum light intensity of the first illumination light is higher than a maximum light intensity of the second illumination light, and
the illumination range where the predetermined light intensity is obtained by the second illumination light is wider than the illumination range where the predetermined light intensity is obtained by the first illumination light, in a horizontal direction.

3 . A marker lamp mounted on a vehicle, comprising:
a first light source; a second light source; and a light guide including a first portion and a second portion, wherein the first portion includes a first incident surface and a first emitting surface, the second portion includes a second incident surface and a second emitting surface, the first incident surface is arranged such that light emitted from the first light source is incident thereon, the second incident surface is arranged such that light emitted from the second light source is incident thereon, the first portion is configured such that 50% or more of the light incident from the first incident surface is emitted from the first emitting surface without going through internal reflection, and the second portion is configured such that 50% or more of the light incident from the second incident surface is emitted from the second emitting surface through internal reflection.

4 . The marker lamp of claim 3 , wherein the first portion and the second portion are shaped as separate optical components.

5 . The marker lamp of claim 4 , wherein the first portion and the second portion are mechanically coupled.

6 . The marker lamp of claim 3 , wherein the first light source is arranged so as to face the first incident surface.

7 . The marker lamp of claim 3 , further comprising:
a reflective surface configured to reflect at least a part of the light that is emitted from the first light source but is not incident on the first incident surface, toward the first emitting surface.

Assignees

• Koito Mfg Co Ltd

Inventors

• Mochizuki Yoshitake

Classifications

• F21S43/239 Primary

  plate-shaped · CPC title

• F21S43/237

  rod-shaped · CPC title

• F21S43/243

  emitting light from one or more of its extremities · CPC title

• B60Q2300/146

  Abnormalities, e.g. fail-safe · CPC title

• F21S43/249

  with two or more light sources being coupled into the light guide · CPC title