External maintenance type four-side decreasing countdown integrated pedestrian signal lamp

The utility model discloses an external maintenance type four-side decreasing countdown integrated pedestrian signal lamp which comprises a lamp post and a lamp box, the lamp box is provided with at least one signal lamp unit, the lamp post is of a square tube structure, and the four faces of the lamp post are each provided with a decreasing countdown module. The four faces of the lamp post are each provided with a mounting hole matched with the decreasing countdown module. The decreasing countdown module comprises an outer frame, a light-transmitting plate fixed in the outer frame, a lamp panel mounting plate arranged on the inner side of the light-transmitting plate and a decreasing countdown lamp panel mounted at the position of the lamp panel mounting plate. A plurality of light-emitting units are arranged on the progressively-decreased countdown lamp panel, a plurality of lamp bead exposing holes are formed in the lamp panel mounting plate, the number of the light-emitting units is equal to that of the l