| 摘要 |
The present invention provides an adjustment mechanism by which a luminai re may be adjusted and secured along an arc. The adjustment mechanism includes a mounting bracket, adjustment bolt, adjustment brace, which is attached to th e optical housing of the luminaire, and a positioning means, such as an eyebolt. The adjustment bolt is threadably attached to the adjustment brace via a non-rotatable nut. The adjustment bolt, which is disposed through the positioning means, is turned in order to adjust the position of the luminaire. As the adjustment bolt turns, the non- rotatable nut, along with the adjustment brace and optical housing attached thereto, moves along the threaded shaft of the bolt. When the turning of the bolt has ceased, the non - rotatable nut. adjustment brace and optical housing are secured in position by the friction al engagement of the thread of the bolt and the thread of the nut.
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