HEAD-UP DISPLAY DEVICE

• US 20120256812A1
• Filed: 12/18/2009
• Published: 10/11/2012
• Est. Priority Date: 12/18/2009
• Status: Active Grant

• Current Assignee: Yazaki Corporation
• Original Assignee: Yazaki Corporation
• Inventors: Aoki, Kunimitsu, Takahashi, Nobuyuki
• Granted Patent: US 8,950,868 B2
• Time in Patent Office: Days
• US Class Current: 345/7
• CPC Class Codes: B60K 2360/179 Distances to obstacles or vehicles
• CPC Class Codes: B60K 2360/334 Projection means
• CPC Class Codes: B60K 35/00 Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
• CPC Class Codes: B60K 35/28 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 Class Codes: G02B 2027/0127 comprising devices increasing the depth of field
• CPC Class Codes: G02B 2027/0141 characterised by the informative content of the display
• CPC Class Codes: G02B 2027/0181 Adaptation to the pilot/driver
• CPC Class Codes: G02B 27/0101 characterised by optical features G02B27/0172 takes precedence
• CPC Class Codes: G02B 6/00 Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings

Abstract

The head-up display device sequentially displays a virtual image (51V) of a guide light from one end of a reflector (30) side, in the back inside of a virtual image 83V of an opening bezel formed into a square frame displayed along an outer edge of a projection area (71) of a window shield, and further displays a virtual image (20V) of display information in the back thereof. The amount of travel of the virtual images (51V) of the guide light when the reflector provided in the head-up display device rotates is smaller than the amount of travel of the virtual image (20V) of the display information. Therefore, even if the virtual image 20V of the display information falls outside the projection area, the virtual images 51V of the guide light remain in the projection area, and are displayed.

Claims

1. A head-up display device, including:

a box-shaped case having an opening;

a display source that is disposed within the case;

a reflector that is displaceably disposed within the case so as to reflect the display light of the display information displayed on the display source toward a projection area disposed in a window shield of a vehicle through an opening of the case; and

a reflector displacement unit that displaces the reflector so as to move a projection position of the display light on the projection area in a vertical direction of the vehicle;

wherein the head-up display device is equipped with a guide light unit having at least one of a plurality of luminous bodies aligned along an optical path of the display light, and a rod-like luminous body arranged along the optical path of the display light, on an inner surface of the case between the display source and the reflector.

2. The head-up display device according to claim 1, wherein the luminous bodies are disposed in parallel to the optical path of the display light on at least one inner surface of a pair of side walls of the case which face each other in a horizontal direction of the display source.

3. The head-up display device according to claim 1, further comprising a light emitting control unit that allows the luminous bodies to emit light in the order from one end thereof toward the other end.

4. The head-up display device according to claim 1, wherein the guide light unit includes the plurality of luminous bodies, the plurality of luminous bodies each includes a light source, and a prismatic light guide member that is protruded from the inner surface of the case so that a longitudinal direction thereof is orthogonal to the optical path of the display light, and guides the light of the light source to a light emitting surface facing the inside of the case, and allows the light to be emitted therefrom, and the light emitting surface of the light guide member is inclined to be closer to the inner surface of the case toward the reflector from the display source.