| 摘要 |
PROBLEM TO BE SOLVED: To provide an HUD device that has improved durability and reliability.SOLUTION: The HUD device 1 displays a virtual image 36 of vehicle-related information, by projecting an image reflected by a reflecting mirror 32 corresponding to a display image of a display 20 onto a windshield 4. In a reduction gear mechanism 50 for amplifying torque generated by a motor 40 that adjusts the rotation angle θ of a reflecting mirror 32, according to an adjustment command from an outside and transmitting it to the reflecting mirror 32, an idler gear 53 on the side of the stage preceding the last gear 59 forms a partial gear portion 530, in which a plurality of teeth 532 are arranged in a range of less than 360 degrees in the rotational direction. Teeth 532a and 532b at both ends of the partial gear portion 530 in the rotational direction engage with the first-stage gear 52, which is paired with the idler gear 53, thereby rotation of the idler gear 53 is stopped; and thereby the range of the rotation angle θ of the reflecting mirror 32 becomes limited to a predetermined adjustable range Ac encompassing the displayable range Ad, allowing the display of the virtual image 36. |
