| 摘要 |
LUMINAIRE MOUNTING ARRANGEMENT A fitter for mounting a luminaire, such as an outdoor floodlight, on a mounting member, such as a pole, employs three castings. A first casting is affixed to the luminaire and is rotatable with respect to a second casting, which is releasably connected to the mounting member. The mechanism for locking the first and second castings in the desired angular position with respect to one another is enclosed within the castings. A chamber in the second casting contains electrical connections between power lines and electrical leads to the luminaire, as well as a portion of the locking mechanism. This chamber is enclosed by a third casting. Mounting of the second casting on the mounting member is achieved by the utilization of tapered surfaces, which permits use of different sized poles, and the second casting is clamped to the pole by set screws at the corners of the second casting, which has a base portion with a substantially square cross section. |
