提供一种有关车箱内信息提供服务系统及客车用信息显示设备，可使风景瞭望效果与信息传达效果并存，并以最适当时序提供和风景有关之信息。于适用于客车，提供图像信息之车箱内信息提供服务系统，系具备：客车用信息显示设备18，系以上述客车窗部之一部，或窗部周边区域作为显示区域；及显示信息处理部4，因应由上述窗部所瞭望之风景，输出和该风景相关之显示信息。

This invention provides an on-board information service providing system and an information display device for use on board, the system and device being capable of producing both of a scenery viewing effect and an information transmitting effect, and capable of providing information relating to scenery at an optimum timing. In the on board information providing system which is adapted for use in a passenger car for providing graphic information, the system being characterized in having an information display device 18 for use in a passenger car, the information display device having a display region which is a part of a window the passenger car or a peripheral region of the window, and a display information processing unit 4 for outputting in response to the scenery viewed from the window the display information relating to the scenery.