| 摘要 |
PURPOSE:To prevent adverse effects caused by disturbance, by increasing stepwise a display value by a prescribed temperature very prescribed period of time only when an automobile travels at a car speed greater than a prescribed speed for a period of time longer than a prescribed period of time with a result that an outside air temperature after the traveling is higher than a temperature displayed before the traveling. CONSTITUTION:To display a temperature, when an engine starts, an initial measurement is effected by an outside air temperature sensor in response to an ON signal from an ignition switch to display the measuring valued A on a display unit. When the outside air temperature sensor senses another measuring value A', the another measuring value A' is compared with a value B displayed on the display unit before the measurement of the value A'. When the another measuring value A' is the same as the displayed value B or greater than it, it is further discriminated whether the conditions that a car speed is greater than a prescribed value and it continues for a period of time greater than a prescribed value are established. When the conditions are established as a result of the discrimination, the display is changed stepwise by a prescribed temperature every prescribed period of time. |
