| 摘要 |
A visual presenting apparatus includes a support column which is mounted via a pivot shaft on a base so as to be pivotable, a friction braking mechanism applying a frictional load to the pivot shaft over a whole range of pivotal movement of the column, a power assist mechanism which applies a spring force to the column to urge the column rearward, a video camera head mounted on a distal end of the column and located over a document placed on an installation surface of the base, thereby imaging the document. The column is pivotable between a forwardly-tilted position and a folded position. The power assist mechanism is operatively coupled with the column when the column is tilted forward from an upright position. The power assist mechanism is released from the coupled state when the column is tilted rearward from the upright position.
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