Vehicle display device

Patent metadata

Field	Value
Publication number	US-10801691-B2
Application number	US-201815876031-A
Country	US
Kind code	B2
Filing date	Jan 19, 2018
Priority date	Sep 4, 2015
Publication date	Oct 13, 2020
Grant date	Oct 13, 2020

Abstract

A vehicle display device is configured for installation to a vehicle and includes a mirror element configured to reflect external light entering from a front surface toward the front surface, and a light emitting device. The light emitting device includes a light source configured to emit light, and a light guide element configured to guide incident light from the light source. The light guide element includes an emission surface configured to output incident light, and an optical-path changing portion configured to change the optical path of incident light toward the emission surface. The mirror element and the light guide element are stacked at an outer surface of the mirror element to allow the optical-path changing portion to change the optical path.

First claim

The invention claimed is:

1. A vehicle display device configured for installation to a vehicle, the vehicle display device comprising:
a mirror element comprising a front surface and a transmissive portion, the mirror element configured to reflect external light entering from the front surface through the transmissive portion and toward the front surface; and
a light emitting device;
wherein the light emitting device comprises:
a light source configured to emit light, and
a light guide element configured to guide incident light from the light source,

wherein the light guide element comprises:
an emission surface configured to output incident light, and
an optical-path changing portion configured to change the optical path of incident light toward the emission surface with reflection surfaces,

wherein the mirror element and the light guide element are stacked at an outer surface of the mirror element to allow the optical-path changing portion to change the optical path, and
wherein surface area of the reflection surfaces is smaller than surface area of the front surface,
wherein the transmissive portion is disposed immediately between the reflection surfaces and the front surface.

2. The vehicle display device according to claim 1 ,
wherein the light guide element is panel-like, and
wherein the light guide element is stacked on the mirror element at an outer surface of the mirror element.

3. The vehicle display device according to claim 1 ,
wherein the transmissive portion is a thin-film transmissive portion configured with one surface as a front surface,
wherein the mirror element further comprises:
a reflective layer formed on another surface of the transmissive portion and configured to reflect external light entering from the front surface and passing through the transmissive portion toward the front surface, and

wherein the light guide element is arranged at the other surface of the mirror element.

4. A vehicle display device configured for installation to a vehicle, the vehicle display device comprising:
a light emitting device; and
a mirror element comprising a transmissive portion and a front surface, the mirror element configured to reflect external light entering from the front surface through the transmissive portion and toward the front surface,
wherein the light emitting device comprises:
a light source configured to emit light, and
a panel-like light guide element configured to guide incident light from the light source, and

wherein the light guide element comprises:
an emission surface configured to output incident light from the light source; and
an optical-path changing portion configured to change the path of incident light from the light source toward the emission surface with reflection surfaces,

wherein a reflective layer is formed on the surface facing the emission surface of the light guide element, that is configured to reflect external light that enters from the emission surface and passes through the light guide element, toward the emission surface, and
wherein surface area of the reflection surfaces is smaller than surface area of the front surface,
wherein the transmissive portion is disposed immediately between the reflection surfaces and the front surface.

5. A vehicle display device configured for installation to a vehicle, the vehicle display device comprising:
a light emitting device; and
a mirror element comprising a transmissive portion and a front surface, the mirror element configured to reflect external light entering from the front surface through the transmissive portion and toward the front surface,
wherein the light emitting device comprises:
a light source configured to emit light, and
a panel-like light guide element configured to guide incident light from the light source,

wherein the light guide element comprises:
an emission surface configured to output incident light from the light source,
an optical-path changing portion configured to change the path of incident light with reflection surfaces,
a transmissive layer formed on the surface facing the emission surface of the light guide element and configured to allow external light entering from the emission surface and passing through the light guide element to pass therethrough, and
a reflective layer configured to reflect external light passing through the transmissive layer toward the emission surface, and

wherein surface area of the reflection surfaces is smaller than surface area of the front surface,
wherein the transmissive portion is disposed immediately between the reflection surfaces and the front surface.

6. The vehicle display device according claim 1 , wherein the optical-path changing portion changes the optical path toward the outside of the host vehicle to which the vehicle display device is installed.

7. The vehicle display device according to claim 1 , further comprising:
an attachment configured for mounting on a vehicle,
wherein the light guide element is arranged so the light source emits light from near the attachment.

8. The vehicle display device according to claim 1 , wherein the vehicle display device configured for installation to a vehicle to serve as a door mirror.

9. The vehicle display device according claim 2 ,
wherein the optical-path changing portion changes the optical path toward the outside of the host vehicle to which the vehicle display device is installed.

10. The vehicle display device according claim 3 ,
wherein the optical-path changing portion changes the optical path toward the outside of the host vehicle to which the vehicle display device is installed.

11. The vehicle display device according claim 4 ,
wherein the optical-path changing portion changes the optical path toward the outside of the host vehicle to which the vehicle display device is installed.

12. The vehicle display device according claim 5 ,
wherein the optical-path changing portion changes the optical path toward the outside of the host vehicle to which the vehicle display device is installed.

13. The vehicle display device according to claim 2 , further comprising:
an attachment configured for mounting on a vehicle,
wherein the light guide element is arranged so the light source emits light from near the attachment.

14. The vehicle display device according to claim 3 , further comprising:
an attachment configured for mounting on a vehicle,
wherein the light guide element is arranged so the light source emits light from near the attachment.

15. The vehicle display device according to claim 4 , further comprising:
an attachment configured for mounting on a vehicle,
wherein the light guide element is arranged so the light source emits light from near the attachment.

16. The vehicle display device according to claim 5 , further comprising:
an attachment configured for mounting on a vehicle,
wherein the light guide element is arranged so the light source emits light from near the attachment.

17. The vehicle display device according to claim 6 , further comprising:
an attachment configured for mounting on a vehicle,
wherein the light guide element is arranged so the light source emits light from near the attachment.

18. The vehicle display device according to claim 2 ,
wherein the vehicle display device configured for installation to a vehicle to serve as a door mirror.

19. The vehicle display device according to claim 3 ,
wherein the vehicle display device configured for installation to a vehicle to serve as a door mirror.

Assignees

• Omron Tateisi Electronics Co

Inventors

• Osumi Yoshimasa
• Hirose Yuji
• Tanaka Keiichiro
• Yamasue Toshinori

Classifications

• B60Q1/381

  with several light sources activated in sequence, e.g. to create a sweep effect · CPC title

• B60Q1/545

  for indicating other traffic conditions, e.g. fog, heavy traffic · CPC title

• B60Q1/5037

  the display content changing automatically, e.g. depending on traffic situation · CPC title

• B60Q1/50

  for indicating other intentions or conditions, e.g. request for waiting or overtaking · CPC title

• F21S43/31

  Optical layout thereof · CPC title