Image display system for vehicle

An image display system for a vehicle comprising:

• an image output device capable of outputting image signals from a plurality of image output units at a same time;
• a plurality of image display devices each receiving the image signal output from the image output device through an image input unit and displaying the image signal as an image on an image display unit;
• and
• a vehicle signal generation unit generating a vehicle signal indicative of a state of a vehicle, wherein
• each of the plurality of image display devices includes:
• a self-circuit failure diagnosis unit diagnosing a failure of a self-internal circuit;
• a failure diagnosis result determination unit determining whether the self-internal circuit is in failure based on a diagnosis result by the self-circuit failure diagnosis unit;
• and
• a diagnosis result notification unit notifying the image output device of a diagnosis result by the failure diagnosis result determination unit, and
• the image output device includes:
• a first vehicle signal input unit receiving the vehicle signal generated by the vehicle signal generation unit;
• a first image content generation unit generating security requirement information based on the vehicle signal;
• and
• an image display destination determination unit outputting the security requirement information to one of the plurality of image output units corresponding to one of the plurality of image display devices determined to be normal in a case where another of the plurality of image display devices is determined to be in failure based on the diagnosis result notified from the another of the plurality of image display devices and the security requirement information is to be displayed on the another of the plurality of image display devices.