Vehicle light emitting device

Patent metadata

Field	Value
Publication number	US-10442339-B2
Application number	US-201815985422-A
Country	US
Kind code	B2
Filing date	May 21, 2018
Priority date	Jun 22, 2017
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

Abstract

A vehicle light emitting device provided to a vehicle and configured to emit light toward outside the vehicle includes a light source; a light guide plate including a light emitting surface and configured to direct light entering from the light source so that the light exits from the light emitting surface and forms an image in a space; and a lighting controller configured to control the emissions state of the light source in accordance with an operation of the vehicle.

First claim

The invention claimed is:

1. A vehicle light emitting device provided to a vehicle and configured to emit light toward outside the vehicle, the vehicle light emitting device comprising:
a light source;
a light guide plate including a light emitting surface, wherein the light guide plate directs light entering from the light source so that the light exits from the light emitting surface and forms an image in a space; and
a lighting controller that controls emission states of the light source in accordance with an operation of the vehicle,
wherein the vehicle light emitting device includes a plurality of light guide plates mutually stacked in a direction perpendicular to the light emitting surfaces thereof, and
the lighting controller switches the light guide plate that emits light in accordance with particulars of the operation of the vehicle.

2. The vehicle light emitting device according to claim 1 , wherein
the light guide plate is provided at a rear end of the vehicle; and
the lighting controller controls an emission state of a light source in accordance with at least any one of a braking operation, an illumination operation, a direction signaling operation, and a steering operation as the operation of the vehicle.

3. The vehicle light emitting device according to claim 1 , wherein the lighting controller causes different light guide plates to layer the light emitted simultaneously therefrom in accordance with the particulars of the operation of the vehicle.

4. The vehicle light emitting device according to claim 1 , wherein distances from the light emitting surface of the light guide plate closest to the outside of the vehicle to the images formed by each of the light guide plates are mutually different.

5. The vehicle light emitting device according to claim 1 , wherein the lighting controller switches where the image is formed during a specific operation of the vehicle.

6. The vehicle light emitting device according to claim 5 , wherein
the vehicle light emitting device includes a plurality of light guide plates mutually stacked in a direction perpendicular to the light emitting surfaces thereof; and
the lighting controller switches where the image is formed by switching the light guide plate that emits light.

7. The vehicle light emitting device according to claim 2 , wherein the lighting controller causes a light guide plate to form an image in space further outside the vehicle than said light guide plate relative to an observer outside the vehicle when controlling the emission state of a light source in accordance with the steering operation as the operation of the vehicle.

8. The vehicle light emitting device according to claim 2 , wherein the lighting controller causes a light guide plate to form an image in space further inside the vehicle than said light guide plate relative to an observer outside the vehicle when controlling the emission state of a light source in accordance with at least any one of the braking operation, the illumination operation, and the direction signaling operation as the operation of the vehicle.

9. A vehicle light emitting device provided to a vehicle and configured to emit light toward inside the vehicle, the vehicle light emitting device comprising:
a light source;
a light guide plate including a light emitting surface, wherein the light guide plate directs light entering from the light source so that the light exits from the light emitting surface and forms an image in a space; and
a lighting controller that controls emission states of the light source in accordance with an operation of the vehicle,
wherein the vehicle light emitting device includes a plurality of light guide plates mutually stacked in a direction perpendicular to the light emitting surfaces thereof, and
the lighting controller switches the light guide plate that emits light in accordance with particulars of the operation of the vehicle.

10. The vehicle light emitting device according to claim 9 , wherein the lighting controller switches the emission state of the light source to change the image when a door of the vehicle is locked or unlocked as the operation of the vehicle.

11. The vehicle light emitting device according to claim 10 , further comprising: a plurality of the light sources for one of the plurality of light guide plates, wherein the lighting controller changes a light source that is activated between the plurality of the light sources to change the image.

12. The vehicle light emitting device according to claim 11 , wherein the light guide plate is provided at a rear end of the vehicle.

13. The vehicle light emitting device according to claim 10 , wherein the light guide plate is provided at a rear end of the vehicle.

Assignees

• Omron Tateisi Electronics Co

Inventors

• Shinohara Masayuki
• Tanoue Yasuhiro
• Kitamura Norikazu
• Kurata Gouo
• Ashida Toru

Classifications

• H05B45/14

  using electrical feedback from LEDs or from LED modules · CPC title

• G02B27/0101

  characterised by optical features (G02B27/0172 takes precedence) · CPC title

• G02B27/01

  Head-up displays · CPC title

• F21S43/239

  plate-shaped · CPC title

• B60Q1/268

  on windscreens or windows (B60Q1/302 takes precedence; lighting devices for vehicle interior on or for windows B60Q3/208) · CPC title