| 摘要 |
<p>Provided is an electrically driven support base which is configured so as to prevent the rotation-induced shaking of a pole for supporting a camera mounting head and so as to enable the automatic adjustment of the position in height of a camera. One end of a flexible transmission belt (drive cord (12)) is connected to a multi-stage telescoping pole (2) having a mounting head (50) provided to the front end pole (46) of the multi-stage telescoping pole (2), and the drive cord (12) is engaged with a gear connected to an electric motor (23). The multi-stage telescoping pole (2) is extended or retracted by paying out or pulling in the drive cord (12). A camera means can be mounted on the mounting head (50), and the multi-stage telescoping pole (2) is provided with a rotation-induced shaking prevention means for each stage pole. The rotation-induced shaking prevention means is formed by providing a rectilinear groove in the axial direction in the wall of each stage pole and enables the multi-stage telescoping pole (2) to rectilinearly extend and retract. Each stage pole has a tube-like shape having any one of a polygonal cross-section, an oval cross-section, and a semicircular cross-section. Each stage pole is combined together in a telescopic structure, and as a result, the multi-stage telescoping pole (2) can rectilinearly extend and retract.</p> |
