Fence type protective device for road lighting street lamp maintenance

The utility model relates to the technical field of protective fences, in particular to a fence type protective device for road lighting street lamp maintenance. In order to solve the problems that an existing fence is incomplete in protection, poor in protection effect, low in safety and the like, the following technical scheme is provided that the fence comprises a first supporting column, a containing cavity is formed in the first supporting column, a second supporting column is movably installed in the containing cavity, and an auxiliary supporting plate is rotatably installed at the bottom of the second supporting column; a supporting plate is fixedly connected to the bottom of the second supporting column, and a conical rod is arranged at the bottom of the supporting plate. The protective fence is novel and compact in structure, suitable for warning protection of road street lamp maintenance, high in protection safety, high in equipment connection stability, convenient to store, carry and transfer, capa