Patent ID: 8502460
Filing Date: 2013-08-06
Classification: H05B,Y02B

Abstract:
1. A 2-lamp parallel-type fluorescent lamp appliance in which two current-carrying circuits are connected to output terminals of a stabilizer using a commercial power supply as a power supply in series to the output terminals and are connected in parallel to each other, fluorescent lamps are connected to each of the two current-carrying circuits, the stabilizer is electrically connected to the current-carrying circuits by an ON/OFF operation of a power supply switch thereby two fluorescent lamps are turned on, the fluorescent lamp appliance comprising: a fluorescent lamp switching means that is provided at one of the two current-carrying circuits and connects or disconnects the one current-carrying circuit; a first control circuit that operates according to the ON/OFF operation of the power supply switch, is electrically connected by the ON operation of the power supply switch within a predetermined time after the power supply switch is turned on and then is turned off, and controls the fluorescent lamp switching means to disconnect the current-carrying circuit; and a second control circuit that opens a normally closed relay contact point when the relay contact point is connected to a power supply input terminal of the first control circuit and is electrically connected to a relay coil by receiving an external instruction signal, and disconnects the one current-carrying circuit by controlling the first control circuit when the relay contact point is closed within a predetermined time after it is opened at the time of the ON operation of the power supply switch.