Display apparatus for vehicle
View Patent ↗In a head-up display apparatus for a vehicle, an aspherical surface of a reflection mirror compensates a distorted projected image caused by non-planarity of a windshield at a predetermined projection area thereon. When moving an eye point of a vehicle driver, an adjustment mechanism moves a stopper pushing the reflection mirror to adjust a reflecting angle so that the reflection mirror reflects light beams to the projection area and the projection area reflects the light beams toward the eye range. During the angle adjustment, an urging member and the stopper hold the reflection mirror.
1. A head-up display apparatus comprising: a reflection mirror having an aspherical surface for compensating a distortion of a projected image caused by a non-planarity of a windshield; and a driving device for driving the reflection mirror to adjust projected light reflected at a reflecting point on the reflection mirror to a predetermined projecting point in a predetermined projection area on the windshield, said driving device being moved for pushing the reflection mirror to adjust the projected light reflected at the projection point to an eye point, from which a vehicle driver can see a forward view through the windshield and the projected image superimposed on the forward view, wherein
the driving device rotates the reflection mirror about a rotating shaft disposed separately from the reflection mirror to be separated a selected distance in front of a reflecting surface of the reflection mirror and facing the reflecting surface.
2. The head-up display apparatus as claimed in claim 1 , wherein
the reflection mirror is retractable, and the driving device includes: a rotatable frame supporting the reflection mirror, and being rotatable together with the reflection mirror between positions where the reflecting mirror being arranged substantially vertically and horizontally; a stopper for stopping the rotation of the reflection mirror at a predetermined angle; and an adjusting member for moving the stopper for pushing the reflection mirror to adjust the angle of the reflection mirror.
3. The head-up display apparatus as claimed in claim 2 , wherein
the driving device further includes an urging member constantly urging the reflection mirror in a direction of arranging the reflection mirror vertically for holding the rotating mirror with the stopper, the stopper pushing in the direction of arranging the reflection mirror horizontally to prevent movement of the reflection mirror in the direction of arranging the reflection mirror vertically by the urging of the urging member.
4. The head-up display apparatus as claimed in claim 2 , wherein
the frame supports the reflection mirror in a manner that at least an upper part of the reflection mirror is temporarily projected outward from an instrument panel of the vehicle during retraction of the reflection mirror, and the stopper stops the rotation of the reflection mirror so as not to be seen from the eye range through an opening of the instrument panel when the head-up display apparatus is in use.