| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a battery housing structure for a timepiece with a radio communication function, suppressing the upsizing of the timepiece size thereof even if a radio communication mechanism is loaded on the timepiece that transmits by radio an identification code possessed by itself. <P>SOLUTION: The radio communication mechanism 25 is built in a wrist watch 3 for sending back its own ID code when receiving a request signal from a vehicle. The communication mechanism 25 is provided with a three-axis corresponding antenna mechanism while a reception antenna 31 for receiving a Z-axial radiowave is attached to a substrate 26 of the communication mechanism 25 on its front surface side. This reception antenna 31 comprises a loop antenna 31b and is firmly fixed via an annular antenna bobbin 31a to the substrate 26. Since a space capable of therein housing components exists in an inner circumferential part of the antenna bobbin 31a, this space is used as a component housing space 32 and a button battery 35 is housed in the housing space 32. <P>COPYRIGHT: (C)2007,JPO&INPIT |
