The invention discloses a ventilation mechanism of a novel structure. The ventilation mechanism comprises a shell, a fan, an
electromagnet, a ventilation plate, a cover plate, fan blades, a control box and a socket. The fan is installed in the shell, and fan blades are installed at the front end of a rotating shaft of an armature of the fan. A
blind hole is formed in the rear end of a rotating shaft of an armature of the fan, an
electromagnet installation hole is formed in the position, corresponding to the
blind hole, of a rear end cover of the fan, the fixed end of the
electromagnet is fixedly installed at the rear end of the fan and stretches into the
blind hole, the electromagnet and the fan are both connected with the control box, and a socket is arranged on the control box and used for being connected with a power source. An air opening I is formed in the rear end of the shell, the ventilation plate is installed at the movable end of the electromagnet, a sealing ring is arranged on the end face, facing the shell, of the ventilation plate, and the ventilation plate can seal the air opening I; a cover plate is installed at an opening in the front end of the shell, and an air opening II is formed in the cover plate. The
integrated design of the fan, the electromagnet, the ventilation plate, the body, the sealing
gasket and the fan blades is adopted, the structure is simple, installation is convenient and fast, space is effectively saved, and meanwhile the good performance of vibration
impact resistance, rainwater prevention, salt mist prevention and the like is achieved.