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Projection installing device
| Details |
Inventors: Takeuchi, Katsuyuki; Katayama, Syuzo;
Assignee: NEC Corporation (Tokyo, JP)
Primary Examiner: Ramirez; Ramon O.
Assistant Examiner: King; Anita M.
Attorney, Agent or Firm: Whitesel; J. Warren Laff, Whitesel & Saret, Ltd.
A projector installing device for installing a projector pendant from a ceiling, which enables easy and quick horizontal angular adjustment of the projector and which is also excellent in durability. A rotary member rotatable around a vertical axis of a pin is installed on a supporting member fastened to a ceiling, the rotary member is provided with fixing screws for unfixably fixing the rotary member at a desired rotary position to the supporting member from its horizontal direction, and the projector is fastened to the rotary member. |
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DETAILED DESCRIPTION In view of the above circumstances, it is therefore an object of the present invention to provide a projector installing device for installing a projector on a ceiling, which enables easy and quick angle adjustment of a projector in its horizontal direction and also enables realization of excellent durability.
In accordance with an aspect of the present invention, the above object is attained by providing a projector installing device for installing a projector on a ceiling, which comprises a supporting member fastened to the ceiling and a rotary member rotatable around a vertical axis of a pin, and wherein the rotary member is provided with fixing screws for unfixably fixing the rotary member at a desired rotary position to the supporting member from its horizontal direction, and the projector is fastened to the rotary member.
Therefore, since the fixing and unfixing directions of the fixing member are set to be horizontal, the worker, after unfixing the fixing member, can rotate the rotary member with respect to the supporting member while nearly keeping his posture as it is.
That is, after conducting the horizontal angle adjustment over the projector, the worker can easily fix the fixing member from its horizontal direction, with his posture kept nearly as it is.
Further, since the full weight of the projector is applied to the supporting member through the rotary member, the weight will not be applied to the fixing member.
In this case, the supporting member is formed to have a box shape with its lower side open and is made up of 4 side plates and a ceiling plate connected continuously therewith, the ceiling plate is provided with a plurality of cylinders which are projected from a face of the ceiling plate and have bolts passed therethrough to carry the ceiling plate, the rotary member is formed to have a box shape with its lower side open, the rotary member is made larger in outer dimensions than the supporting member and is made up of 4 side plates and a ceiling plate connected continuously therewith, the ceiling plate is formed therein with slots for allowing passage of the cylinders and also allowing movement thereof as passed therethrough caused by rotation of the rotary member to mount and support the supporting member from its upper side, and the side plates of aid supporting member are provided with graduation scales for allowing a worker to know a rotary position of the rotary member relative to the supporting member
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