Protective device and method of lighting assembly, lighting assembly and protective method thereof

A protective device of a lighting assembly for preventing electric shock and preventing a lamp tube from working when the lamp tube is installed incorrectly, the lighting assembly comprising at least one LED, a first end lamp base and a second end lamp base, the first end lamp base comprises a first pin and a second pin, the second end lamp base comprises a third pin and a fourth pin, and the protective device comprising:

• a first detecting module and a second detecting module respectively configured to detect a connection state between the first pin and the second pin to output a first detecting signal, and a connection state between the third pin and the fourth pin to output a second detecting signal;
• and
• a driving module connected to the at least one LED and configured to control the at least one LED to work based on the first detecting signal and the second detecting signal,
• wherein the driving module comprises a control switch, and the control switch is turned on or turned off to control the at least one LED to work or not, the driving module further comprises a trigger circuit, the trigger circuit is connected to the control switch to control turning on or turning off the control switch based on a control signal generated by the first detecting signal and the second detecting signal, the trigger circuit comprises a first switch, a second switch and a third switch, a first terminal of the first switch is configured to receive the first detecting signal, a first terminal of the second switch is configured to receive the second detecting signal, a first terminal of the third switch is connected to a second terminal of the first switch and a second terminal of the second switch, and a second terminal of the third switch is connected to a driving terminal of the control switch.