| 摘要 |
According to the present invention, an exhaust duct 54 comprises: a first passageway 54a formed at an end in a left-right direction (X1-X2 direction) of an electric component box 50 and extending in a top-bottom direction (Z1-Z2 direction) with an outlet 55 facing the interior of the electric component box 50 provided at an upper end; and a second passageway 54b extending in the left-right direction (X1-X2 direction) with an exhaust opening 53 facing an air blower chamber 14 in which an air blower 40 is disposed, wherein the first passageway 54a and the second passageway 54b are in communication with each other via a communicating opening 56 formed in a peripheral wall lower part of the first passageway 54a, with the exhaust opening 53 disposed above the communicating opening 56 and more spaced apart from the air blower 40 than the outlet 55. |
