Lead screw transmission lifting rod and fire-fighting lighting device thereof

The lead screw transmission lifting rod comprises a base, an outer pipe barrel, a middle pipe barrel, an inner pipe barrel, a middle pipe fixing disc, an inner pipe fixing disc, a middle lead screw, a driving device and an inner lead screw, and the outer pipe barrel is fixedly connected to the base; the number of the middle pipe barrels is at least one, and the middle pipe fixing discs and the middle pipe barrels are arranged in a one-to-one correspondence mode. The outer pipe barrel, the middle pipe barrel and the inner pipe barrel are sequentially sleeved in a sliding mode from outside to inside in the axis direction and are coaxially arranged, the inner lead screw penetrates through the middle pipe fixing disc and is in threaded connection with the middle pipe fixing disc, a regular polygon through hole is formed in the middle lead screw in the axis direction of the middle lead screw, and a limiting piece is installed on the inner lead screw. The inner screw rod is arranged in the middle screw rod in a pen