Colorful light projection device for large-scale activity site

The utility model discloses a large-scale activity site colorful light projection device in the field of colorful light projection devices, which comprises a main body, the outer wall of the main body is detachably connected with an adjusting bolt, the outer wall of the adjusting bolt is movably connected with a mounting bracket, and the outer surface of the rear end of the main body is detachably connected with a maintenance mechanism. A heat dissipation mechanism is fixedly connected to the outer surface of the rear end of the maintenance mechanism, the maintenance mechanism comprises an annular fixing groove, a rear cover plate, a heat conduction hole, a dustproof net, a handle, a fixing assembly, an elastic rope and a connecting block, the rear cover plate is located on the inner wall of the fixing groove, and the heat conduction hole is located in the outer surface of the rear end of the rear cover plate. The device is convenient to maintain, easy and convenient to maintain and rapid to disassemble and a