Safety warning device

The utility model relates to the technical field of expressway operation, in particular to a safety warning device which comprises a fixing device and a safety warning device body arranged on the top of the fixing device. The fixing device comprises a fixing base, fixing threaded holes, universal wheel holes, an infrared inductor, a solar cell panel, a movable sliding block and a first movable guide rail, the fixing threaded holes are formed in the four corners of the bottom of the fixing base, and a plurality of universal wheel holes are formed in the positions, located on the inner sides of the fixing threaded holes, of the bottom of the fixing base; the safety warning device comprises a fixed base, an infrared inductor is arranged on the front face of the fixed base, solar cell panels are arranged on the top of the fixed base, a first moving guide rail is arranged between the two solar cell panels, and a moving sliding block is arranged on the top of the first moving guide rail. Through the design, the ove