Lighting device capable of monitoring lighting quality thereof

A lighting device capable of monitoring the lighting quality thereof, the lighting device comprising:

• a lighting diode, connected to an external power source by a driver to receive electric energy from the external power source and emit light;
• and
• a sampling and control unit, connected to the lighting diode, the sampling and control unit comprising:
• a sampling end for sampling the voltage of a specific device in a circuit when the lighting diode receives electric energy and emits light, and an output end for making a determination according to the sampled voltage and sending a control signal,
• wherein when a comparison result between the sampled voltage and a preset value changes, the output end of the sampling and control unit sends the control signal to the driver, and the driver changes the light-emitting state of the lighting diode according to the control signal.

A lighting device capable of monitoring the lighting quality thereof, the lighting device comprising:

• a lighting diode, connected to an external power source by a driver to receive electric energy from the external power source and emit light;
• a sampling and control unit, connected to the lighting diode, the sampling and control unit comprising:
• a sampling end for sampling the voltage of a specific device in a circuit when the lighting diode receives electric energy and emits light, and an output end for making a determination according to the sampled voltage and sending a control signal;
• and
• an indicator, located on a branch where the sampling and control unit is located, and used for receiving the control signal,
• wherein when a comparison result between the sampled voltage and a preset value changes, the output end of the sampling and control unit sends a control signal to the indicator, and the control signal controls the circuit state of the indicator to change.