Air purification device for cab of rail transit vehicle

The invention discloses an air purification device for a cab of a rail transit vehicle, and belongs to the field of rail transit. The device is composed of a machine shell, a power source, a draught fan, a net plasma generator, a field electricity module and a JSFD module. The machine shell is divided into a main body connecting barrel, a protective cover, an outer cover ring and a protective net. The main body connecting barrel is of a graded trumpet-shaped structure with a small top and a large bottom, an air inlet is formed in the top, and an air outlet is formed in the bottom. The protective cover is installed at the top of the main body connecting barrel and used for protecting the fan, the power source, the plasma generator and other components at the top, and meanwhile a plurality of heat dissipation holes are formed in the side wall of the protective cover. A filter screen, a fan, a net plasma generator, a field electricity module, a JSFD module, a protective net, an outer cover fixing ring and other