Protective device for ventilation window on top of electrical equipment

The utility model discloses a protection device for a top ventilation window of electrical equipment, the protection device is installed at the outer side of the top ventilation window, the protection device comprises an inner frame, an outer cover and a ventilation device, the outer cover is located outside the inner frame, the inner frame comprises a plurality of inner frame wall surfaces, the outer cover comprises a plurality of outer cover wall surfaces, and the ventilation device is located in the outer frame wall surfaces. The inner frame wall face and the outer cover wall face are both provided with a plurality of shutter holes, the ventilation device is located between the inner frame wall face and the outer cover wall face, and the inner frame wall face and the outer cover wall face form an angle of 60-120 degrees with the plane where the top ventilation window is located. The protection device can meet the IP55 protection test requirement, and is small in occupied space and high in exhaust efficienc