Ventilation device for prefabricated cabin

The utility model discloses a prefabricated cabin ventilation device which comprises a ventilation main body and a prefabricated cabin, the ventilation main body is fixed on the prefabricated cabin, the ventilation main body comprises a ventilation fan and a protection device, and through the cooperation of the protection device and the ventilation fan, the ventilation effect can be achieved, and the ventilation effect can be achieved. And the protection device is connected with the ventilating fan in a buckling manner, so that the protection device can be replaced at any time when more dust is used. 本实用新型公开了一种预制舱换气通风装置，包括换气通风主体、预制舱，所述换气通风主体固定在预制舱上，所述换气通风主体包括换气扇、防护装置，通过防护装置与换气扇的配合，既可完成换气通风的效果，也可实现抵挡蚊虫或鸟类侵袭的目的,防护装置与换气扇呈卡扣式连接，在使用灰尘较多时，可随时将防护装置更换。