| 摘要 |
PROBLEM TO BE SOLVED: To facilitate assembly and maintenance by positively fixing a cooler and a fan duct to an internal duct by fixing with a machine screw in one place. SOLUTION: A horizontal movement of the cooler 7 is hindered by right and left positioning parts 7b inserted inside an air outlet 6b of the internal duct 6 and abutted on right and left circumferential rims of the air outlet 6b, its rearward movement is hindered by a rear direction regulating part 7c abutted on an outer circumferential part front face of the air inlet 6b, its frontward movement is hindered by a pair of side face plates 8c of the fan duct 8 with a rear end abutted on front faces of a pair of side plates 7a of the cooler 7, and its upward movement is hindered by a top plate 8b of the fan duct 8 inserted inside the air outlet 6b and having a plurality of protrusion parts 8e abutted on an upper circumferential rim of the air outlet 6b. The fan duct 8 is fixed by the machine screw an attaching hole 8f of a bottom plate 8d. By this, the cooler 7 and the fan duct 8 can be positively fixed in the internal duct 6 by the machine screw in one place.
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