| 摘要 |
PURPOSE:To perform constraction easily at low cost by fixing one end of a strip-shaped antenna, which holds itself cylindrical lengthwise while no external force is applied, in such a way that it holds itself cylindrical lengthwise, and then storing the antenna by winding it cylindrically widthwise from the other end. CONSTITUTION:One end of an antenna element 1 formed by working one strip- shaped metallic plate in such a way that it holds itself cylindrical lengthwise is held cylindrically with a tip terminal 2, and the antenna is wound in a widthwise cylindrical shape from the other end. For freely setting the length of the antenna element 1 stood upright, a wedgelike holding element 7 is locked at an optional position by press-contacting the antenna element 1 at the drawing-out opening of a case 3 with a spring 8. Consequently, many metallic pipes are stacked conventionally, but one strip-shaped metallic plate is wound, thereby reducing the unit price of products and also facilitating the construction. |
