VEHICULAR DISPLAY DEVICE

A vehicular display device emits display light from an opening toward a windshield to cause a virtual image and a real image of a display image represented by the display light to be visually recognized and includes a display unit that includes a display element, transmits light emitted by a light source, and displays the display image, a reflection unit that reflects light representing the display image displayed on the display unit toward the windshield, and a control unit that performs a detection process to detect a state change in a seat accompanied with a change in an eyellipse Ey of an occupant, and a turning-off process to turn off the display light at least during a period from a change start to a change completion of the state change in the seat based on a detection result of the detection process.