| 摘要 |
PURPOSE:To freely adjust temeperature from front and rear seats, by providing temperature setting switches to the front and rear seats in a car room, adjusting a control signal from a pulse signal of said temperature setting switch in accordance with a rising or lowering direction and setting temperature of an air conditioning device with said control signal. CONSTITUTION:An initial value can be set to a control circuit 3, further a presettable up/down counter 34, capable of up/down operating the count, is used. In this circuit, a temperature setting signal is generated by an exclusive OR gates 35, 36 and OR gate 37, and temperature setting signals in front and rear seats, when in a reverse direction, are cancelled. AND gates 38, 39 and OR gate 40, in case of temperature setting, that is, in case of temperature setting switchs 5, 6 turned clockwise, applies a signal of H level to the presettable up/down counter 34 to switch the counter 34 to up counter. Preset input P is used when the circuit 3 is initially operated, and the initial temperature set value is input. |
