A display device includes a camera for capturing an image around a vehicle body; a monitor provided in a vehicle interior; and a display control unit for controlling a display of the monitor. The monitor has a rectangle-shaped display face, and is supported switchably between a vertically elongated posture and a horizontally elongated posture. When the monitor is switched to the vertically elongated posture, based on an image captured by the camera, the display control unit displays a top view image of a road surface around the vehicle body seen from above on the monitor.