VEHICLE DISPLAY DEVICE

A vehicle display device includes a displaying part (10) configured to emit, as display light, display information to be viewed and recognized by an occupant in a cabin as a virtual image, a reflection member (40) configured to reflect the display light emitted from the displaying part (10) to project the display light on a projection target part (Rwf) in the cabin, and a controller (50) configured to control the display light in accordance with a detection eye box (EBd) representing a detection result of an eye box (EB) representing a range of an eye point of the occupant and allowing the virtual image to be viewed and recognized.