| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a switch device achieving improvement in fail-safe ability. <P>SOLUTION: A switch device 10 includes: a control part 7 in which control signals are generated in response to each operation signal of a plurality of switch operation parts 1 to 5; switching elements Tr1 to Tr4 which perform switching operation on the basis of the control signals from the control part 7; and a plurality of light sources 8 to 14 which are lighted and controlled by the switching elements Tr1 to Tr4. A control part 7 includes a filter part 30 through which only a specific frequency band passes. The switching elements Tr1 to Tr4 control the extinguishing or lighting of light sources 8 to 14 by the presence or absence of the control signal from the filter part 30. <P>COPYRIGHT: (C)2013,JPO&INPIT |
