| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a direct current power switch device which safely shuts off direct current power supply without generating arc upon shutting off the power supply to an electrical load. <P>SOLUTION: The direct current power switch device includes: an operation input unit 12 which instructs supply and supply stop of direct current power; a switch contact 14 provided on a power feed line, which supplies the direct current power to a lighting controller 30, i.e., an electrical apparatus that controls power supply; a notifying means which notifies the lighting controller 30 of power shutoff, in the case where the operation input unit 12 instructs supply stop of the direct current power; and a control unit 11 which opens the switch contact 14 when it is detected that power supply has been controlled to reduce the current in the electrical apparatus after the notification is made. <P>COPYRIGHT: (C)2011,JPO&INPIT |
