DISPLAY DEVICE FOR VEHICLE

PURPOSE:To improve visual ascertainment of abnormal display, by a method wherein, through computing of a microcomputer, abnormality is displayed by means of a staged change in color tone called a change in the background color of a CRT display surface and a change in a car speed display color. CONSTITUTION:For example, when the temperature of cooling water is increased to an abnormal value, a microcomputer 70 decides abnormality by means of a signal from a water temperature sensor 20, produces data which changes the background color of a display surface 91 of a CRT 90 from a grey color to a red color, and performs red display of the periphery thereof togetherwith digital green display of a car speed through a controller 80. In which case, a vehicle is brought to a stop, but if no level change occurs to a signal from a car speed sensor 10 through a shaping circuit 50, overheat and the necessity of engine stop are displayed by means of a synchronizing signal. In case a vehicle is left to run as it is, a car speed display is changed from a green color to, for example, a black color. This permits improvement of visual ascertainment of abnormal display.