US 12,352,955 B2
Head-up display device
Masahiko Mizuochi, Niigata (JP); and Shinji Oguchi, Niigata (JP)
Assigned to NIPPON SEIKI CO., LTD., Niigata (JP)
Appl. No. 17/795,179
Filed by NIPPON SEIKI CO., LTD., Niigata (JP)
PCT Filed Feb. 4, 2021, PCT No. PCT/JP2021/004016
§ 371(c)(1), (2) Date Jul. 25, 2022,
PCT Pub. No. WO2021/157633, PCT Pub. Date Aug. 12, 2021.
Claims priority of application No. 2020-018171 (JP), filed on Feb. 5, 2020; and application No. 2020-211388 (JP), filed on Dec. 21, 2020.
Prior Publication US 2023/0063573 A1, Mar. 2, 2023
Int. Cl. G02B 27/01 (2006.01); B60R 1/12 (2006.01)
CPC G02B 27/0101 (2013.01) [B60R 1/12 (2013.01); B60R 2300/205 (2013.01); G02B 2027/0169 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A head-up display device comprising:
a display that emits display light;
a fixed mirror that reflects the display light from the display;
a rotating mirror that is provided rotatably about a rotation axis and reflects, toward a projection-receiving member, the display light reflected by the fixed mirror;
a mirror support unit that supports the fixed mirror;
a holding case unit that holds the rotating mirror and is formed integrally with the mirror support unit; and
a spring that fixes the fixed mirror to the mirror support unit by pressing the fixed mirror toward the mirror support unit,
wherein the fixed mirror includes a shaft unit positioned at an end of the fixed mirror,
wherein the mirror support unit includes a shaft support unit that supports a side surface of the shaft unit, and
wherein a shaft-use spring among a plurality of the springs is a plate spring and is provided so as to contact the side surface of the shaft unit and press the shaft unit toward the shaft support unit.