To improve the possibility for recognizing important information by applying a dark color tone in a specific solid angle on a front window glass as seen from a driver so that important information can be seen in this specific solid angle.

A range 3 applied with a dark color tone is provided on a front window glass 2. Information is displayed to a driver 7 as headup display by a display device constituted of an image generator 8 and a mirror 9. Information not so important to the driver 7 is displayed in a range 4 at a relatively small angle from the straight forward direction. Important information 5 such as the present vehicle speed, for example, is displayed in the range 3 applied with a dark color tone so that the driver 7 can recognize the information 5 in a specific solid angle. Such a contrast allowing the recognition of the information 5 can be invariably guaranteed on the display of the information 5 by the dark color tone of the range 3.