Lighting device with fault detection and self- locking control function

A lighting device with fault detection and self-locking control function, comprising:

• a light-emitting module;
• a power module configured to drive the light-emitting module;
• a voltage detection module configured to detect a driving voltage of the light-emitting module to generate a detection signal;
• a signal conversion module configured to convert the detection signal into an operating status signal, wherein when the detection signal is lower than a threshold value, the signal conversion module converts the detection signal into the operating status signal of high level and standing for an abnormal state, wherein when the detection signal is greater than the threshold value, the signal conversion module converts the detection signal into the operating status signal of low level and standing for a normal state;
• a self-locking control module configured to control the power module;
• and
• a signal delay module;
• a signal control module configured to receive the operating status signal via the signal delay module and control the self-locking control module according to the operating status signal;
• wherein the signal delay module is activated when the operating status signal is in the abnormal state, whereby the signal control module is activated, and the signal control module activates the self-locking control module to control the power module to stop driving the light-emitting module and enter a self-locking state.