VEHICLE DISPLAY DEVICE

In a vehicle display device (1), in a case of displaying an outside information virtual image (So) in a right monocular viewing region (22a) and a left monocular viewing region (23a), a controller (12) performs a display image control for a display image displayed by an image projection unit (11) by using a viewability display form with a more excellent viewability than in a case of displaying the outside information virtual image (So) in a binocular viewing region (21). In a case of displaying the outside information virtual image (So) in the binocular viewing region (21), the controller (12) performs a display image control by using the identifiability display form that provides a more excellent recognizability of the outside information virtual image (So) for the driver (D) than in a case of displaying the outside information virtual image (So) in the right monocular viewing region (22a) and the left monocular viewing region (23a).