| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an antenna for a radio correction clock having high reception performance and high antimagnetic property without having a useless space in a clock armor. <P>SOLUTION: An extension part having a wider area than the area an antenna core is provided on the end in the longitudinal direction of a winding part formed by applying winding to the antenna core comprising a ferromagnetic substance. The extension part is not provided in a domain wherein the first virtual plane including one end face of the winding part and extended in a direction approximately orthogonal to the longitudinal direction of the antenna core is faced to the second virtual plane including similarly the other end face of the winding part and extended in a direction approximately orthogonal to the longitudinal direction of the antenna core. The extension part has an end on an upper opening end face of the clock armor, on a place approximately agreeing with a lower opening end face, or in the center direction of the clock armor, when viewing from the dial side or the back lid side. <P>COPYRIGHT: (C)2008,JPO&INPIT |
