| 摘要 |
PURPOSE:To maintain refreshing feeling for personnel on board by providing the automobile air conditioner with a device to adjust air blow by monitoring the solar radiation shining upon the car room. CONSTITUTION:The solar radiation is monitored by a detector 41 and the room temperature by a thermistor 22 and both are AD converted and memories thereof stored in RAM31 together with the output from a setter 24. Through a fixed time interruption by a timer 30, CPU29 will manipulate either a negative pressure solenoid 24 or an atmospheric pressure solenoid 25 and thus adjust an air mix door in accordance with the room temperature. Meanwhile, the solar radiation is also read and compared with a set value. If it is less than the set value, air flow will remain as selected by an air-conditioning switch 26, and if more, a command is issued to increase the rotation frequency of a blower motor 4a through an output interface circuit 28, amplifier 33 and a power transistor 37. Accordingly, even when human body is locally warmed, an adequate cooling effect of air blow is provided. |
