PURPOSE: To provide both functions of backward monitor and in-compartment monitor to the on-vehicle monitor.

CONSTITUTION: A changeover control circuit 24, an image processing unit 25 and a changeover switch 26 are used to direct a photographic direction of an image pickup camera 15 toward the backside of the vehicle when a driver sensor 23 senses it that a driver 22 takes its seat and the video image picked up by the image pickup camera 15 in this state is displayed on an on-vehicle monitor 19. When the driver sensor 23 does not sense it that a driver 22 takes seat on a driver's seat 17, the photographic direction of the image pickup camera 15 is directed in the inside of a compartment 12 and the video image picked up by the image pickup camera 15 is recorded on a VTR 21. Thus, both the functions of the backward monitor and the in-compartment monitor are provided to the on-vehicle monitor.