AIR CONDITIONING DEVICE FOR AUTOMOBILE

PURPOSE:To realize an amenity irrespective of the variation in traveling states by stopping the input to the control means of the detected signal of an outside air sensor at the time when the backward state of a vehicle is detected and outputting to the control means the detected value of the outside air sensor immediately before the backward detection as well. CONSTITUTION:The go-astern of a vehicle is detected by a backward detection means 59 which inputs it to a delay means 60. On the other hand, a control means 58 controls the air blowing state by an outside air sensor 53 and the output signal of a room temp. setting means 51d. When the backward detection signal is input to the delay means 60, the outside air temp. just before the detection is stored, the output to the control means 58 of the detected outside air temp. is stopped and the outside air temp. just before the backward detection stored instead is output to the control means 58. By this structure a stabilized control can be executed without any effect on the control even if the detected value of the outside air sensor 53 rises abnormally by the heat of an engine room according to the go-astern.