Virtual image display device and attachment device

Patent metadata

Field	Value
Publication number	US-9488835-B2
Application number	US-201314914404-A
Country	US
Kind code	B2
Filing date	Aug 29, 2013
Priority date	Aug 29, 2013
Publication date	Nov 8, 2016
Grant date	Nov 8, 2016

Abstract

A head-up display makes an observer visually recognize an image, which is optically reflected by a combiner, as a virtual image. The head-up display has a main body unit and an attaching unit. The main unit has a light source which is a projection unit for projecting the image. The attachment unit is configured such that the attachment unit can be attached to a sun visor that is provided to a vehicle. The joint member has a rotation shaft that rotatably joints the main unit to the attachment unit. The damper reduces vibration of the main unit in the rotational direction of the rotation shaft. When the rotation shaft of the joint member is attached to the sun visor by the attachment unit, the rotation shaft is substantially parallel to a sun visor supporting shaft so the sun visor can rotate in the direction in which the sun visor opens/closes.

First claim

The invention claimed is:

1. A virtual image display device used while being attached to a sun visor of a moving body, the virtual image display device being configured to make an observer visually recognize a display image as a virtual image, the display image being optically reflected by a half mirror, the virtual image display device comprising:
a main unit configured to include a projection unit for projecting the display image; and
a buffer member configured to reduce vibration of the main unit in rotational direction of the sun visor.

2. The virtual image display device according to claim 1 , further comprising:
an attachment member configured to be attachable to the sun visor; and
a joint member configured to include a joint shaft which rotatably joints the main unit to the attachment member,
wherein the buffer member is configured to reduce vibration of the main unit in rotational direction of the joint shaft.

3. The virtual image display device according to claim 2 ,
wherein the joint shaft is substantially parallel to a sun visor shaft in a state that the attachment member is attached to the sun visor, the sun visor shaft supporting the sun visor in a state that the sun visor can rotate in direction in which the sun visor opens and closes with respect to a front window of the moving body.

4. The virtual image display device according to claim 3 ,
wherein the joint shaft exists near the sun visor shaft.

5. The virtual image display device according to claim 4 ,
wherein the joint shaft exists in a substantially vertical direction with respect to the sun visor shaft, and
wherein a center of gravity of the main unit exists in a substantially vertical direction with respect to the joint shaft.

6. The virtual image display device according to claim 3 ,
wherein a center of gravity of the main unit exists near the joint shaft.

7. The virtual image display device according to claim 3 ,
wherein the attachment member sandwiches the sun visor in order to be attached thereto, and
wherein width of the attachment member sandwiching the sun visor in a longitudinal direction of the sun visor is determined to such a length that resonance frequency of the sun visor is equal to or higher than a predetermined frequency.

8. The virtual image display device according to claim 3 , further comprising
a restriction member configured to restrict the sun visor from rotating on the sun visor shaft in a state that the sun visor is closed.

9. The virtual image display device according to claim 8 ,
wherein the restriction member is provided between the attachment member and a target unit of attachment installed in the moving body, and
wherein the restriction member is an arm which sticks out with respect to the sun visor shaft to direction of the front window along the target unit.

10. The virtual image display device according to claim 9 ,
wherein the arm is rotatable or extendable along the target unit not to stick out with respect to the sun visor shaft to the direction of the front window.

11. The virtual image display device according to claim 1 , further comprising
a combiner configured to function as the half mirror.

12. An attachment device for attaching an object to a sun visor installed in a moving body, comprising
an attachment member configured to be attached to the sun visor of the moving body;
a joint member configured to include a joint shaft which rotatably joints the object to the attachment member; and
a buffer member configured to reduce vibration of the object in rotational direction of the joint shaft,
wherein the joint shaft of the joint member is substantially parallel to a sun visor shaft in a state that the attachment member is attached to the sun visor, the sun visor shaft supporting the sun visor in a state that the sun visor can rotate in direction in which the sun visor opens and closes with respect to a front window of the moving body.

Assignees

• Pioneer Corp

Inventors

• Uchiyama Tetsuya
• Iizawa Takashi
• Yasaki Akira
• Shinkai Yasuhiro
• Mizoguchi Takashi
• Shimosawa Ryosuke

Classifications

• B60K35/28

  characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver · CPC title

• B60K35/22

  Display screens · CPC title

• B60K35/213

  Virtual instruments · CPC title

• B60K35/81

  for controlling displays · CPC title

• B60K35/10

  Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor · CPC title