| 摘要 |
<p>PURPOSE:To improve the operability of the device by a method wherein a horn is enabled to be sounded by operating two sets or more of a plurality of operating switches, provided on the steering wheel and controlling a load for a vehicle except the same for the horn, simultaneously or approximately simultaneously. CONSTITUTION:The horn 100 is sounded by the operation of a horn switch 9 provided on the steering wheel 10. When the operating switches 11, 12, for example, among the operating switches 11-14 in regard to each load are put ON simultaneously upon an emergency, zero (0) is supplied to OR circuits 31, 32 but an NOR circuit 21 outputs one (1) and an OR circuit 27 inputs the (1) into the OR circuits 31, 32, therefore, the OR circuits 31-34 output the (1) respectively. None of switch circuits 111-114 will not be operated by that output, but the (1) in the OR circuit 27 is reversed and inputted into a transmission circuit 140 and is outputted from the terminal 1505 of a receiving circuit 150 as the (1), therefore, a transistor 120 is put ON and the horn 100 is sounded.</p> |
