Neck hanging type temperature adjusting device

The embodiment of the utility model provides a neck-hanging type temperature adjusting device which comprises the components of a housing which is provided with an external air inlet/outlet and an air channel which is formed between the external air inlet/outlet and the external air inlet/outlet; the fan is arranged in the air duct; the shell comprises a first side wall and a second side wall which are located on the two opposite sides in the axial direction of the fan, and the outer air inlet is formed in the first side wall. The inner shell is arranged in the air duct and comprises an inner shell side plate surrounding the fan from the radial outer side, and a first inner air outlet communicated with the outer air outlet is formed in one side of the inner shell; a first inner air inlet adjacent to the outer air inlet and a second inner air inlet adjacent to the second side wall are formed in the inner shell; the air channel comprises a first sub air channel formed between the outer air inlet and the second