High-density cooling device

The utility model relates to a high-density heat radiating device which is composed of a plurality of identical and jogged heat radiating single bodies, wherein each of the heat radiating single bodies is provided with a straight wall; the upper side and the lower side of the straight wall are respectively vertically provided with a flat wall which can be contacted with a heating element in the same direction. In the utility model, both end edges of the flat wall are respectively provided with a jointing arm; an inserting groove is arranged between the jointing arm and the flat wall; the free ends of the jointing arms respectively further and forward extends a containing arm of the jointing arm for containing the adjacent heat radiating single bodies in the same direction; the containing arms further vertically bend and extend at one side which is close to the inserting groove towards the direction which is close to the straight wall to form a pin which can be inserted in the inserting groove of an adjacent heat radiating single body; the pins are inserted in the inserting grooves of adjacent heat radiating single bodies and are inwards folded through the function of outside force to be flatly pressed on the flat walls of the adjacent heat radiating single bodies, so that the adjacent heat radiating single bodies can be tightly combined.