Inverter power supply overload protection circuit, device and method for converting direct current into alternating current of parallel street lamp

The invention discloses an inverter power supply overload protection circuit, device and method for converting direct current into alternating current of parallel street lamps. The circuit comprises a temperature detection control circuit, a voltage stabilizing circuit and an over-current and under-voltage protection circuit, wherein the temperature detection control circuit is used for detecting the temperature in the inverter power supply output path and controlling the on-off of the power supply; the voltage stabilizing circuit is used for adjusting the output power supply voltage under the safe and stable conditions of the temperature detection circuit; and the over-current and under-voltage protection circuit is used for receiving the output voltage of the voltage stabilizing circuit and completing under-voltage detection protection and over-current detection protection. The device comprises a shell, a PCB and a buffer assembly; wherein the shell is of an O-shaped cylindrical structure, so that the heat