Vehicle lamp

Patent metadata

Field	Value
Publication number	US-11415286-B2
Application number	US-202017025546-A
Country	US
Kind code	B2
Filing date	Sep 18, 2020
Priority date	Sep 26, 2019
Publication date	Aug 16, 2022
Grant date	Aug 16, 2022

Abstract

A vehicle lamp includes a plurality of light sources, and a light guide that guides light from the light sources incident from a light incident portion and emits the light from a light emitting portion. The light guide includes a light deflecting portion that deflects a guide direction of the light between the light incident portion and the light emitting portion. The light deflecting portion deflects each light from the plurality of light sources toward the same area of the light emitting portion.

First claim

What is claimed is:

1. A vehicle lamp comprising:
a plurality of light sources; and
a light guide configured to guide light from the plurality of light sources that is incident from a light incident portion and emit the light from a light emitting portion, the light incident portion including a first light incident portion and a second light incident portion,
wherein the light guide includes a light deflecting portion that deflects a guide direction of the light between the light incident portion and the light emitting portion, and
the light deflecting portion is configured to deflect the light from each of the plurality of light sources toward a same area of the light emitting portion,
wherein the plurality of light sources are different from each other in at least one of emission color, luminous intensity and light emission form,
a first light source of the plurality of light sources is configured to emit a white light and function as a daytime running lamp,
a second light source of the plurality of light sources is configured to emit an amber light and function as a turn signal lamp, and
the first light source and the second light source are disposed side by side in a front-rear direction of the vehicle lamp, and the first light incident portion and the second light incident portion of the plurality of light sources are disposed side by side in the front-rear direction of the vehicle lamp.

2. The vehicle lamp according to claim 1 , wherein the light deflecting portion is configured as a reflecting surface that internally reflects light guided in the light guide.

3. The vehicle lamp according to claim 2 , wherein the light incident portion is configured to cause the light from the plurality of light sources to be incident in a same direction, and the light deflecting portion is constituted by a plurality of reflecting surfaces having different inclination angles with respect to the incident direction of the light from each of the plurality of light sources.

4. The vehicle lamp according to claim 3 , wherein the light guide is formed in a plate shape having one end surface serving as the light deflecting portion and a remaining end surface serving as the light emitting portion, and the light incident portion is formed in a portion close to the one end surface.

5. The vehicle lamp according to claim 4 , wherein the plurality of reflecting surfaces are arranged in a direction that is the same as a width direction of the light emitting portion of the light guide.

6. The vehicle lamp according to claim 5 , wherein a width dimension of light incident from the light incident portion to the light guide is substantially the same as a width dimension of the light emitting portion.

7. The vehicle lamp according to claim 2 , wherein the reflecting surface includes a first reflecting surface corresponding to the first light source, and a second reflecting surface corresponding to the second light source, and
the first reflecting surface is disposed in a rear side and the second reflecting surface is disposed in a front side of the vehicle lamp.

8. The vehicle lamp according to claim 1 , wherein a width dimension of the light emitting portion is smaller than a width dimension of the light deflecting portion.

9. The vehicle lamp according to claim 1 , wherein a plurality fine optical steps is formed on a surface of the light emitting portion.

10. The vehicle lamp according to claim 1 , wherein the first light source is configured to function as a clearance lamp as well as the daytime running lamp.

11. The vehicle lamp according to claim 1 , wherein the first light source is disposed in a rear side and the second light source is disposed in a front side of the vehicle lamp.

12. The vehicle lamp according to claim 1 , wherein a plurality of light deflecting portions is formed on a rear end surface of the light guide in a step shape along a vertical direction of the light guide.

13. The vehicle lamp according to claim 12 , wherein a step portion is formed between adjacent light deflecting portions.

14. A vehicle lamp comprising:
a plurality of light sources; and
a light guide configured to guide light from the plurality of light sources that is incident from a light incident portion and emit the light from a light emitting portion, the light incident portion including a first light incident portion and a second light incident portion,
wherein the light guide includes a light deflecting portion that deflects a guide direction of the light between the light incident portion and the light emitting portion,
the light deflecting portion is configured to deflect the light from each of the plurality of light sources toward a same area of the light emitting portion,
the light from the plurality of light sources is incident in parallel with an optical axis of each of the first light incident portion and the second light incident portion,
each of the first light incident portion and the second light incident portion includes:
a main incident portion positioned in a center of each of the first light incident portion and the second light incident portion so as to face a center of a light emitting surface of one of the plurality of light sources; and
a pair of secondary incident portions positioned above and below the main incident portion, respectively, to form a line-symmetrical in a vertical direction, and

a first light source and a second light source of the plurality of light sources are disposed side by side in a front-rear direction of the vehicle lamp, and the first light incident portion and the second light incident portion are disposed side by side in the front-rear direction of the vehicle lamp.

Assignees

• Koito Mfg Co Ltd

Inventors

• Takenaga Kohei

Classifications

• F21S41/25

  Projection lenses · CPC title

• F21V23/00

  Arrangement of electric circuit elements in or on lighting devices {(characterised by cooling arrangements F21V29/508)} · CPC title

• G02B6/0031

  Reflecting element, sheet or layer · CPC title

• G02B6/0045

  by shaping at least a portion of the light guide · CPC title

• F21W2107/10

  for land vehicles · CPC title