A digital display apparatus for a vehicle includes an optical engine that includes a light source, a reflection type digital light deflector that has a plurality of micro mirror elements, a light irradiation unit that irradiates reflected light from the reflection type digital light deflector on a road surface and the like, and an information display unit. The reflection type digital light deflector digitally switches over a direction of reflection of a light from the optical engine between an ON and an OFF state. The information display unit displays information using a contrast between the ON reflected light and an OFF reflected light from the reflection type digital light deflector on the road surface and the like through the light irradiation unit.