| 摘要 |
A head-up display device that is provided with: a display unit (32) that projects a display image onto a windshield of a vehicle; a control board (33a) on which a control circuit (33) that controls the display unit is mounted; and a housing case (40) that houses the control board and that has a hollow space (40c) that contacts the control board. The display unit is provided to the outside of the housing case. The housing case has communication paths (40a, 40b) that allow the hollow space to communicate with ducts (21, 22) that conduct air that is blown into the cabin of the vehicle from an air-conditioning device (90) of the vehicle. |
