| 摘要 |
<p>PROBLEM TO BE SOLVED: To fully ensure an area of a ground plane by using a conductive member laid on a surface of a battery pack as the ground plane of a substrate. SOLUTION: A conductive member 16 is laid on a surface of a battery free of conductivity, and it is used as a ground plane of a substrate 13. Thereby, miniaturization of a device main body is accelerated, and even if frame grounding cannot be provided fully, an area of the ground plane can be fully ensured. The substrate 13 operates, thereby when an electromagnetic field noise is generated, its noise can be escaped to a conductive member 16, that is, the ground plane through a substrate side contact terminal mounted to the substrate 13. The conductive member 16 is laid on both faces of a battery pack 14 and grounded from both sides of the substrate 13 and the cabinet, thus increasing safety.</p> |
