| 摘要 |
PURPOSE:To improve the reliability of shielding between high-frequency circuit devices so that possibility of occurrence of crosstalk can be eliminated by putting a shield plate provided with numerous fins and having a crosssection of inverted U-shape on partition plate sections. CONSTITUTION:A shield plate 20 is constituted of a long main plate member 21, the lower surface of which is brought into tight contact with upper end faced 3A of partition plates 3-1 and 3-2 and a pair of side plates 22, between which the side walls 3B of the partition plates 3-1 and 3-2 are held, and has a crosssection of inverted U-shape. In addition, the shield plate 20 are provided with parallel fins formed by partially cutting and raising the main plate member 21. When the shield plate 20 is put on the partition plates, the numerous fins 23 are arranged at the upper section of the partition plates. When a lid 2 is brought into contact with the opening of a metallic case 1 and the case is sealed by seam welding in such state, the fins 23 elastically come into contact with the inner surface of the lid 2. Therefore, the gap between the partition plates and lid can be sealed stably. |
