| 摘要 |
A dust-proof cover having a small size in depth direction is formed. A dust-proof cover (27) closes an opening portion (29) installed in a projection light path for displaying a virtual image (53) recognizable by a driver by reflecting projection light projected forwardly of the driver by a windshield glass (2(translucent member)). The dust-proof cover is formed in the shape of a recessed surface along a front-rear direction of a vehicle (10) and a tubular surface with the recessed surface being continuous along a right-left direction of the vehicle (10), the curvature of recessed surface becoming greater toward the front of the vehicle (10), whereby external light entering the opening portion (29) from above the vehicle (10) is reflected in directions such that the driver cannot visually recognize the light. |
