Abstract: A lamp assembly is oriented inside a mounting structure to direct illumination out of an opening in the mounting structure. A coupling is selectively engageable to fix the orientation of the lamp assembly, and selectively disengageable by accessing it through the opening to change the orientation of the lamp assembly. The coupling may comprise a latching assembly that can be selectively engaged to fix the orientation of the lamp assembly at a plurality of predetermined discrete orientations. A stop may be carried by the mounting structure to prevent the lamp assembly from pivoting through the opening.

Abstract: A lamp assembly for supporting at least one elongated lamp is pivotally attached to a mounting structure so that the lamp assembly is rotatable with respect to the mounting structure about an axis generally aligned with a longitudinal axis of the lamp. An otherwise substantially enclosed housing has an opening sized to admit a lamp assembly that pivotally attaches to the housing such that it is rotatable through the opening, and a friction assembly attached to the lamp assembly provides a slidable frictional interface with the housing.