There has been a problem of dew condensation, during a cooling operation, on a wind vane or the like provided at an air outlet because the wind speed of blown air leaking from ends in longitudinal direction of the air outlet is low, causing the entanglement of room air. Walls that form an air outlet 6 from which air that has exchanged heat in a heat exchanger is blown are provided. End portions of each of the walls in a longitudinal direction of the air outlet 6 have respective recesses 19 such that a passage of the air therein is made wider than in a central portion of the wall. In the longitudinal direction of the air outlet 6, the recesses 19 each have a downstream-side width L2 that is smaller than an upstream-side width L1.