Highway construction safety warning device

The utility model discloses a safety warning device for highway construction, which relates to the technical field of highway engineering equipment and comprises an LED warning screen and a bottom platform, a support is fixedly mounted at the top of the bottom platform, the bottom of the LED warning screen is fixedly connected with the top of the bottom platform through the support, a protective frame is arranged outside the LED warning screen, and the protective frame is fixedly connected with the bottom of the bottom platform through the support. A rain cover is welded and fixed to the top of the protection frame, and a cleaning mechanism is movably connected to the front face of the LED warning screen. According to the LED warning screen cleaning device, the driving motor, the threaded rod, the moving plate, the halfpace cleaning plate, the cleaning cotton block and the protection frame are matched, the moving plate drives the halfpace cleaning plate to move on the protection frame through the matching of