| 摘要 |
<p>A drive shaft (12a) of a motor (12) disposed in an oil tank (20) pass through to the outside from a bottom plate (27), and a fan (30) is linked to the end of the drive shaft. A passage forming cover (35) that covers the outer surface of the bottom plate (27), and that forms an air passage for air blown out of the fan (30) between the outer surface and the cover, is provided. The outer edge (37) of the passage forming cover (35) is bent in the surface direction of first to third side plates (23, 24, 25) that are contiguous with the bottom plate (27).</p> |
