PURPOSE: To secure safety and reduce driver's operation by automatically quitting a dynamic picture during the driving of a vehicle and switching the display to a stationary picture.

CONSTITUTION: A navigation system inputs the position signal of the vehicle and the signal 3 of a map data base, etc., through, for example, a GPS receiver, etc., and displays the position of the vehicle on a map drawn on a monitor 1 according to a driver's indication sent through an operation part 12. Further, a television broadcasting system inputs the signal 4 of a television broadcast, etc., and projects the image of the television broadcast on the monitor 1 according to a driver's indication sent through the operation part 12. In this case, an image display device 2 detects the vehicle being driven and performs control for automatically switching the dynamic image of the television broadcast to the stationary image wherein data on an operation management system are displayed during the driving of the vehicle.