Head-up display device

• US 9,244,276 B2
• Filed: 05/13/2014
• Issued: 01/26/2016
• Est. Priority Date: 12/15/2011
• Status: Active Grant

• Current Assignee: Yazaki Corporation
• Original Assignee: Yazaki Corporation
• Inventors: Shimada, Takahiro, Sasaki, Junichi
• Primary Examiner(s): Choi, William
• Application Number:
  US14/276,074
• Publication Number:
  US 20140247501A1
• Time in Patent Office: 623 Days
• Field of Search: 359/630, 359/633, 345/8, 351/158, D14/372, D16/309
• US Class Current: 1/1
• CPC Class Codes: G02B 2027/015 involving arrangement aiming to get less bulky devices
• CPC Class Codes: G02B 27/01 Head-up displays
• CPC Class Codes: G02B 27/0101 characterised by optical features G02B27/0172 takes precedence
• CPC Class Codes: G02B 27/0149 characterised by mechanical features G02B27/0176 takes precedence

Abstract

A head-up display device projects a display light on a windshield of a vehicle to form a virtual image thereon. The device includes a casing, an indicator which is attached to the casing to emit the display light into the casing, a light guide path through which the display light emitted from the indicator is guided, and a wiring board which is provided with a driving circuit for driving the indicator. The casing includes a guide rail formed along an irradiation direction of the display light from the indicator to support both lateral portions of the wiring board on the guide rail, and the wiring board is attached in a containing space of the casing formed between the light guide path and an inner surface of the casing by guiding and sliding the wiring board along the irradiation direction of the display light with the guide rail.

Claims

1. A head-up display device for projecting a display light on a windshield of a vehicle to form a virtual image thereon, the head-up display device comprising:

a casing;

an indicator which is attached to the casing to emit the display light into the casing;

a light guide path through which the display light emitted from the indicator is guided; and

a wiring board which is provided with a driving circuit for driving the indicator, wherein the casing includes a guide rail formed as an inner surface of a lateral wall of the casing at one end side of the casing along an irradiation direction of the display light from the indicator to support both lateral portions of the wiring board on the guide rail, and

the wiring board is attached, by a slidable attachment, in a containing space of the casing formed between the light guide path and an inner surface of the casing and is configured to slide on the guide rail along the irradiation direction.

2. The head-up display device according to claim 1, wherein

the indicator is integrally mounted on the wiring board, and

the indicator is configured to be attached to the casing by the slidable attachment of the wiring board to the guide rail.

3. The head-up display device according to claim 1, wherein

the containing space is formed between the light guide path and a bottom surface of the casing, and the wiring board is accommodated in substantially parallel with the bottom surface of the casing in the containing space.

4. The head-up display device according to claim 1, wherein the indicator is orthogonal to the irradiation direction and the wiring board.

5. The head-up display device according to claim 1, wherein the wiring board extends, in the irradiation direction, away from the indicator.

6. The head-up display according to claim 1, wherein the guide rail is configured to slide both lateral edges of the wiring board on the guide rail along the irradiation direction.