Luminous traffic signboard

The utility model relates to the technical field of traffic signs, in particular to a luminous traffic sign. A plurality of separable signboard assemblies are matched with a plurality of supporting pieces, and a panel, an aluminum back plate, a light bar and a microprism reflective film which form the signboard assembly are of mutually detachable structures, so that a plurality of parts can be separately transported to a destination on a road and are assembled during installation, on one hand, the weight of the whole parts during transportation can be reduced, and the transportation cost is reduced; the problems that the signboard mechanism or the signboard assembly assembled into a whole deforms due to overweight and the like can also be prevented, clamping grooves formed in the supporting pieces are matched with mounting rods arranged in the clamping grooves in a sliding mode, the uniformity of the positions of the mounting rods is guaranteed, and therefore different numbers of mounting rods can be convenie