| 摘要 |
PROBLEM TO BE SOLVED: To provide a box-shaped housing structure in which sufficient rigidity is obtained, airtightness is ensured, and excellent appearance is provided. SOLUTION: A highly rigid top plate 4 is fastened by screws 7 to the top face of a rectangular housing 3 which is formed by fastening an upper housing 1, which is made by sheet metal processing, to a lower housing 2, which is made by sheet metal processing. Highly rigid side covers 5, 6 are also fastened to both sides of the housing 2 by screws 7. In addition, heat dissipation from the top plate 4 is improved by making the top plate 4 with a material having heat conductivity higher than that of iron. COPYRIGHT: (C)2009,JPO&INPIT
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