Globe for education

The utility model discloses a globe for education, indicate globular the airbag, body, aerating device and the pressure relief device of map including cuboid, surface, be provided with the release valve on the globular the airbag, aerating device include one end be the open -ended barrel, slide set up piston in the barrel, with hinge joint's hollow piston rod, the outer wall of barrel is provided with first check valve, sets up the second check valve on the piston, the piston rod is connected with the cuboid, pressure relief device includes that the top is the open -ended drum, and the drum internalization is provided with first closing plate, two closing plates, and the outer wall of this drum is provided with and loses heart mouthful, is provided with the spring between first closing plate and the second closing plate, and the top of second closing plate is provided with the montant, the rotatable the set screw that is provided with on the drum, the set screw's an end screw in to the inner chamber of drum in and with montant in close contact with. The beneficial effects are that: carry laborsaving convenience, long service life.