Box cover, water box, humidification apparatus, and air blowing device

A water box of a humidifying device, the water box comprising a box body, an air-out duct and a box cover;

• wherein
• the box cover comprises a cover body and a mist output channel penetrating through the cover body;
• the cover body is integrally formed with the mist output channel;
• a protrusion provided with a first receiving cavity is formed on the cover body, the first receiving cavity is in communication with the mist output channel;
• the box cover further comprises a plurality of drainage ribs, the plurality of drainage ribs are arranged on an inner surface of a top of the protrusion;
• and
• the mist output channel is provided at one side of the plurality of drainage ribs, and the air-out duct is provided at another side of the plurality of drainage ribs.