Abstract: A protective case with multiple air tunnels for the protective case, so the heat absorbed by contact blocks from the electronic equipment is radiated rapidly out of the protective case through vent pipes. When the electronic equipment is supported up to watch movie or play games, because the hot air will raise and be exhausted from the upper part, and the fresh cool air will come inside from lower part of the protective case, as a result, the ventilation is accelerated and the heat dissipation performance is greatly improved.

Abstract: A protective case with multiple air tunnels for the protective case, so the heat absorbed by contact blocks from the electronic equipment is radiated rapidly out of the protective case through vent pipes. When the electronic equipment is supported up to watch movie or play games, because the hot air will raise and be exhausted from the upper part, and the fresh cool air will come inside from lower part of the protective case, as a result, the ventilation is accelerated and the heat dissipation performance is greatly improved.

Abstract: A protection shell of a type suitable for supporting a touch tablet personal computer in multiple positions includes: a protection bottom cover having a recess on a back portion thereof, the recess being provided with holes at an upper portion thereof and with guiding slots at both sides of a middle portion thereof; a supporting cover having a thickness smaller than or equal to the depth of the recess of the protection bottom cover, with protrusions rotatably connected with the holes of the protection bottom cover; and a supporting plate with one end rotatably connected to a middle portion of the supporting cover and the other end having slide blocks received within the guiding slots of the protection bottom cover. The protection shell is portable, and stable and simple in structure, whereby the production efficiency is improved.