LED fault detection device

The utility model discloses a LED fault detection device, include: an at least light pipe, an at least photoelectric switching circuit, gate, electric signal detection circuit and control circuit, the one end of every light pipe presses close to to wait to detect LED, and a photoelectric switching circuit is pressed close to to the other end, waits to detect one -to -one between LED, light pipe, the photoelectric switching circuit three, control circuit is connected with the gate electricity, and awaiting measuring that according to actual need lighted tries LED, and the control gate drives electric signal detection circuit and carries out signal of telecommunication detection to corresponding photoelectric switching circuit, the electricity signal detection circuit be connected with gate, each photoelectric switching circuit and control circuit, carries out the signal of telecommunication to corresponding photoelectric switching circuit and detect under the gate drive to to detect result feedback and give control circuit, judge according to the testing result whether wait to detect LED breaks down for control circuit. The utility model discloses whether can break down LED makes timely detection.