JPS57191114A - Air conditioning device for vehicle - Google Patents

Abstract

PURPOSE:To suppress overcontrol operation and prevent room temperature from excessive increase and decrease, in a vehicle air conditioning device capable of adjusting temperature in front and rear seats in a car room, by performing priority control for the earlier operation of temperature setting and controlling the later operation of setting ineffective for a certain time. CONSTITUTION:If either temperature setter switch 5 or 6 in front or rear seat, a pulse signal is generated in an OR gate 41 or 42 to turn on a timer T1 or T2. AND gates 43, 44 are circuits for turning on the timer of the earlier signal from the temperature setter switch, in case of temeperature setting by the temperature setting by the temperature setter switches 5 and 6, and taking precedence of the priority signal. An AND gate 45 is a circuit for taking precedence of the switch 6 in the rear seat when the timers T1, T2 are both turned on. While input signals to AND gates 46, 47, 48, 49 are controlled by outputs of the timers T1, T2. A signal of OR gates 50-52 is output, when necessary to increase counting of a counter 34, the signal is created by an OR gate 53.