Shielding device with waterproof heat dissipation holes

The utility model discloses a shielding device provided with waterproof heat dissipation holes, comprising a bottom shell, the top of the bottom shell is covered with a top cover playing a sealing role, the edge of the inner wall of the top cover is connected with the bottom shell through screws to form a detachable fixing structure, and the top cover is provided with first air outlet holes distributed in an array for discharging hot air; the heat conduction pipe is horizontally arranged on the inner side of the bottom shell, a supporting column of the bottom shell is arranged at the bottom of the heat conduction pipe in a sliding and penetrating mode, the top end of the supporting column is attached to the top of the inner wall of the heat conduction pipe to form a limiting supporting structure, and the heat conduction pipe is fixedly connected to the supporting column of the bottom shell through a screw; and the circuit board is attached to the upper surface of the heat conduction pipe. According to the shi