Abstract: An aspect of the present invention relates to an air conditioner which is provided with a structural body, a wind direction plate, and auxiliary housings. The structural body forms an air outlet that extends in a horizontal direction and blows out a cool or warm airflow which is generated by a heat exchanger on a downward-facing surface which is continuous downward from a front surface, and includes one pair of wall bodies which are fixed to be immovable with respect to the air outlet on both sides of the first air outlet. The wind direction plate is disposed in the air outlet and is supported by the structural body to be freely rotatable around a horizontal shaft line. The auxiliary housings are attached to an outer wall surface of the wall body to be freely rotatable around a horizontal shaft on both sides of the air outlet, and form an auxiliary air outlet which blows out taken-in indoor air.