Novel device for ventilating interior of sealed switch cabinet

The invention discloses a novel device for ventilating the interior of a sealed switch cabinet, and the device comprises a cabinet body, an air exhaust assembly, and a ventilation unit, the cabinet body comprises an assembly sleeve, the air exhaust assembly comprises an air exhaust housing, a drive motor, and an air exhaust fan, and the ventilation unit comprises a ventilation sleeve, a condensation sleeve, and a connection sleeve. According to the device, the exhaust fan and the ventilation unit are arranged, and air circulation is generated in the sealed switch cabinet according to the air negative pressure principle. In order to prevent humid air from condensing in the cabinet body, a condensing part is arranged to condense in advance, condensed water can be discharged through the wateroutlet, and meanwhile, the condensing part is matched with an arc-shaped groove to be conveniently connected with each sleeve of the ventilation unit. The condensation part can be controlled by a rotating assembly to be sequ