Traffic light apparatus and method for detecting a failured traffic light

摘要

Disclosed are a traffic light apparatus sensing a failure of a traffic light, and a method thereof. According to the present invention, the traffic light apparatus includes at least one display light for displaying a traffic signal and senses a failure of a traffic light. The traffic light apparatus comprises: a power supply unit supplying power to at least one display light; and a processor controlling a power providing unit to provide power to the at least one display light. The at least one display light includes a plurality of light-emitting diodes which are grouped into a predetermined plurality of groups. The processor detects an output voltage value per a plurality of groups, compares the output voltage value detected per the plurality of groups to determine at least one group which includes an LED in which an error has occurred.