Novel two-in-one multifunctional lightning protection device

The utility model relates to a novel two-in-one multifunctional lightning protection device, which is characterized by comprising a power supply lightning protection circuit and a video lightning protection circuit, wherein the power supply lightning protection circuit and the video lightning protection circuit are in parallel connection. The device employs methods such as a rapid discharge tube, a voltage-sensitive resistor, a fast recovery diode, an inductor, etc. to carry out reliable discharge to ground to high voltage caused by lightning stroke, thereby effectively protecting following circuits. The power supply lightning protection circuit employs the mode of three-stage discharge to lightning stroke voltage, wherein the rapid discharge tube is employed to carry out first-stage discharge to ground, the inductor is employed to carry out secondary filtering, and the rapid discharge tube is employed to carry out post-stage discharge to ground to residual lightning stroke voltage. The mode guarantees that the power supply is free form the interference of the lightning stroke to a greatest extent.