Radiator

A radiator comprises a body and a plurality of waveguide tubes, wherein the body is provided with a plurality of heat radiation holes penetrating through the lower surface and the upper surface of the body, the centers of any three adjacent heat radiation holes form a regular triangle, the quantity of the heat radiation holes is the same as that of the waveguide tubes, each waveguide tube is a hollow tube body made of metal, the waveguide tubes are vertically arranged on the upper surface of the body and are in one-to-one correspondence with the heat radiation holes, the waveguide tubes are mutually parallel, and the tube wall width of each waveguide tube is equal to the distance between any two adjacent waveguide tubes. By adopting the radiator, electromagnetic wave can be shielded, and heat generated by an electronic component can be effectively reduced; meanwhile, when a fan on a mainboard works, wind current of the working fan can cool a fan heat radiation blind area between the same row of waveguide tubes.