| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve the reception sensitivity by a simple structure by storing an antenna which can freely be extended in a rotatable guide member and varying the angle of the antenna through the rotation of the guide member. SOLUTION: The antenna 21 which is extended is stored in a housing 2, a joint 22 which is able to rotate on the housing 2 is provided between an external cylinder part where the antenna 21 is extended and the housing 2, and the guide of the antenna 21 is superposed. Consequently, the direction of the antenna is adjusted by rotating the joint to obtain maximum reception sensitivity. Further, the joint 22 is fitted to the back of the housing 2 and then the surface direction of a variable angle can be varied. Further, the antenna 21 is rotated by 360 deg., it becomes easy to fit a coaxial cable and a coaxial connector to the rotation part, and the expansion part and rotation part of the antenna are separated, thereby the angle varying mechanism is simplified.</p> |
