| 摘要 |
The outdoor lighting comprises a stem, a socket disposed in the top of the stem for retaining a halogen lamp, a socket housing, a diffuser lens and a reflector top. The socket housing has a lower cylindrical portion having a first inner diameter for fitting over the outer diameter of the upper part of the stem, a second cylindrical portion having a second inner diameter larger than the first inner diameter adapted to closely fit over the outer diameter of the cylindrical diffuser lens. The lower cylindrical portion of the socket housing has a slot extending upward from its bottom edge with a width greater than a diameter of a locking screw that is screwed into a bore in the side of the stem. When the locking screw is loosened, rotation of the socket housing forces an edge of the slot against the locking screw, which converts the rotational motion of the socket housing into an axial motion, causing the socket housing, diffuser and reflector to be raised or lowered relative to the stem, and modifying the beam spread depending on the direction of movement.
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