| 摘要 |
PURPOSE:To improve the scope of designing free from restriction by the mount position of the operation part through mode indication according to the number of lamps by switching mode in sequence responding to each push on only one push button composing the operation part. CONSTITUTION:Arranged are an automatic feedback type push button switch 21 for mode switching control, a FF circuit 23 which is adapted to output ''1'' from a point F each time the switch is depressed, a counter divider 24 for computing to divide the output into the number of mode and a diode matrix to which the output is impressed through an inverter 25. To terminals Ma to Mg of the circuit 26, connected are a Car indication lamp 27, a Fresh indication lamp 28, a Circ indication lamp 29 and a solenoid valve 5 for actuating inside-outside air changeover damper, a Comp indication lamp 30 and an electromagnetic clutch 34 for the cooler compressor, a Center indication lamp 31 and a solenoid valve 18 for the center diffusion port opening/closing damper respectively. They are switched in sequence. |
