| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light-emitting diode illumination circuit and a luminaire which can detect short-circuit faults with high accuracy. <P>SOLUTION: A light-emitting diode illumination circuit 501 provided with a luminaire 510 which emits light by electric power comprises: a light-emitting part 502 provided with LED circuits 502a to 502d, each including a plurality of light-emitting diodes; a fault detection part 505 provided with voltage detection circuits, respectively connected to the LED circuits 502a to 502d in series, which detect a drop in voltage at opposite ends of the LED circuits 502a to 502d; and a fault alarm part 506 which generates an alarm on the basis of detection of a drop in voltage at opposite ends of the LED circuits 502a to 502d by the voltage detection circuits. When a fault in the LED circuits 502a to 502d is detected, a fault alarm part 6 generates an alarm. <P>COPYRIGHT: (C)2013,JPO&INPIT |
