Emergency lighting centralized power supply

The emergency lighting centralized power supply comprises an inner cavity, a cabin door and a display screen, hinges are welded to the two ends of one side of the inner cavity, the cabin door is welded to one side of each hinge, the display screen is embedded in the top end of the surface of the outer wall of the cabin door, and fire extinguishing structures are arranged on the two sides and the top end of the interior of the inner cavity. The centralized power supply is protected by arranging the explosion-proof structure, the outer cavity is arranged outside the inner cavity for placing thecircuit element, the outer cavity and the inner cavity are fixedly filled through the explosion-proof net and the supporting column, the explosion-proof effect inside the inner cavity can be effectively improved, heat dissipation inside the device is achieved by arranging the heat dissipation structure, and the service life of the device is prolonged. During use, the cooling fan is started, the cooling fan is fixed to the