| 摘要 |
PROBLEM TO BE SOLVED: To provide an LED driving device capable of executing suitable driving control corresponding to an abnormal state occurring in the LED driving device from outside the LED driving device.SOLUTION: An LED driving device 1 drives an LED module 2 provided to a lighting fixture 10 and having LED units 2a, 2b connected in parallel. The LED driving device 1 includes an abnormal voltage detection circuit 6 which detects operating voltages of the LED units 2a, 2b being abnormal voltages, and an overvoltage detection circuit 4 and a low voltage detection circuit 5 which detect a voltage applied to the LED module 2 being an overvoltage and a low voltage respectively, and an abnormality discrimination circuit 8. The abnormality discrimination circuit 8 outputs an abnormality discrimination signal FS corresponding to a detection signal S1 output from the overvoltage detection circuit 4, a detection signal S2 output from the low voltage detection circuit 5, or a detection signal S3 output from an abnormal voltage detection circuit 6 to a driving control part 11 outside the LED driving device 1 according to the detection signal. |
