Patent ID: 8885260

Claim:
A headup display device, comprising: a casing having a bottom surface; and a driving mirror configured to reflect a display light irradiated from an indicator to guide the reflected display light to a windshield of a vehicle, the driving mirror including: a base plate fixed to the bottom surface of the casing; a pair of opposite support plates which are upright on the base plate; a holder pivotally supported by the pair of opposite support plates; a reflective mirror held by the holder; a driving motor configured to pivot the holder to change an angle of the reflective mirror; and a positioning projection provided on each of the pair of support plates near a support portion of the holder and protruding in a mounting direction of the base plate to the bottom surface of the casing, wherein a holding recessed portion is formed on the casing to allow an insertion of the positioning projection therein and hold the positioning projection at a predetermined position.