| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve a problem of insufficient heat radiation of heating elements.SOLUTION: Heating elements 209a to 209c are mounted on a base material 208. Heat sinks 211a to 211c radiate heat generated from the heating elements 209a to 209c. A housing (a top surface case 201, an intermediate case 202, and a bottom surface case 203) houses the base material 208. The housing cover (a bottom surface cover 204) is attached to the housing so as to cover a part of an outer surface of the housing. An air passage 207 is provided between the housing and the housing cover. The air passage 207 allows air in the exterior of the housing and the housing cover to pass through an area between the housing and the housing cover. The heat sinks 211a to 211c are disposed on the air passage 207.</p> |
