Air inlet switching device for vehicle air conditioner

The utility model relates to an air inlet switching device for a vehicle air conditioner. The air inlet switching device comprises an air duct, the air duct is provided with a rectangular cross section and a triangular longitudinal section, the end with the larger cross section is an air outlet, the end with the smaller cross section relative to the air outlet is a first air inlet, and the part, close to the air outlet, of the upper side wall is a second air inlet; supports are arranged on the two opposite side walls of the base. The air door comprises an air door shaft, a first door plate and a second door plate, the first door plate and the second door plate are axially symmetric relative to the air door shaft, the first door plate and the second door plate are respectively provided with a rectangular shape corresponding to the air duct and the second air inlet at the positions, and the air door is pivotally connected with the support of the air duct through the air door shaft. The air inlet switching devic