A vehicle is provided with a plurality of imaging cameras for imaging the front left side, front right side, rear left side, rear right side and rear side. Imaging conditions such as a position where the imaging is scheduled, imaging camera used for the imaging, vehicle traveling direction, shift position of a transmission and vehicle speed are registered in an external memory. When the present position of the vehicle detected by a position detector is at or close to the position where the imaging is scheduled and when the imaging conditions are satisfied, the external circumstances of the vehicle are imaged by the specified imaging camera and are displayed on the display unit in the vehicle.