Breathing type waterproof mechanism, outer shell and electric device

The utility model relates to a breathing type waterproof mechanism, an outer shell and an electric device, the breathing type waterproof mechanism comprises a filter screen/core arranged at a throughhole of the outer shell, and a filter hole of the filter screen/core is smaller than the diameter of water molecules. And the filter screen/core is arranged in the through hole or at the outer port ofthe through hole through adhesion, plugging, ring buckling or threads. A filter screen/filter element frame is mounted on the outer side of the filter screen/filter element; and the filter screen/filter element frame is connected with the corresponding surface of the outer shell. When the through hole is located in the bottom of the outer shell, the filter screen/core is located in the middle ofthe through hole, and a cavity channel is formed between the end face of the filter screen/core and the outer port of the lower end of the through hole. Or when the through hole is positioned at the top or the side surface of t