Heat dissipation device and 5G base station antenna circuit board

The utility model relates to the field of circuit boards, and particularly discloses a heat dissipation device and a 5G base station antenna circuit board, comprising a mounting box, four corners of the inner wall of the mounting box are fixedly connected with limiting columns, and the side wall of one end of each limiting column is provided with a mounting stud; a plurality of second heat dissipation fins are arranged on the outer wall of one side of the heat dissipation plate, a plurality of first heat dissipation fins are fixedly connected to the outer wall of one side of each second heat dissipation fin, and a heat dissipation copper pipe is arranged on the outer wall of the other side of the heat dissipation plate; in actual use, the outer wall of one side of the heat dissipation copper pipe is evenly coated with heat dissipation silicone grease, then the circuit board body is installed and fixed through the installation studs and the fixing nuts, the outer wall of one side of the circuit board body is m