| 摘要 |
PROBLEM TO BE SOLVED: To provide a means which sets an antenna for satellite radio wave reception set on a moving body to a proper position according to movement of the moving body. SOLUTION: An antenna 2 for satellite radio wave reception is arranged on a roof 1a of a vehicle 1 by an antenna moving means. The antenna moving means consists of, for example, a rail 3 laid on the rood of the vehicle 1 and an antenna pedestal 4, on which the antenna 2 is mounted. The rail 3 is arranged at right angles to the moving direction of the vehicle 1, because radio wave shielding materials are closest in the side direction of the vehicle. The antenna pedestal 4 is provided with a motor 4a as a pedestal drive part and a pulley 4b rotated by this motor and is moved on the rail 3 by rotation of the pulley 4b. For example, a rack is used as the rail 3, and a pinion engaged with it is used as the pulley 4b to move the antenna 2 to a prescribed position on the rail 3.
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