| 摘要 |
PURPOSE:To keep off a rise in temperature inside a car room in time of parking under the blazing sun, by perceiving the temperature inside the car room, while installing such an actuation control switch that forcibly drives an electric motor driving an air conditioner blower at a time when the car room temperature goes beyond the specified value. CONSTITUTION:In time of parking under the blazing sun, if a switch 5 is left tilted to the B side intact, there can be made up such a circuit as leading to earth from a terminal 5f via a terminal 5d, an electric motor 6, terminals 5c, 5e, and a contact 9b of a ventilation relay 9. And, under this condition, the inside of a car room comes to a high temperature, and the resistance value of a thermistor 12 becomes smaller than the specified value whereby an electric current comes easy to flow, and when a transistor Tr8 is turned to ON, the motor 6 is driven, making an air conditioner blower turn round, thus forced ventilation takes place. At this time, with the resistance value of a temperature setting variable resistor 11 installed in series with the thermistor 12 adjusted, temperature inside the car room where the transistor Tr8 is turned to ON is adjusted as specified. |
