Lighting fixture

A lighting fixture for a lamp, the lighting fixture comprising:

• a fixture body including an elongated shape, a first end side, a second end side, and a through-hole, the first end side configured to receive a first body mount for connecting the fixture body to a first lighting duct, the second end side configured to receive a second body mount for connecting the fixture body to a second lighting duct;
• a light source accommodated in the fixture body and configured to emit laser light;
• a power supply accommodated in the fixture body and electrically connected to the light source;
• and
• a light guide accommodated in the fixture body and including an entrance end and an exit end, the entrance end being optically connected to the light source, the exit end extending through the through-hole, the light guide configured to guide the laser light from the light source through the through-hole to the exit end,
• wherein the first body mount includes a mounting shaft extending from an opposite side of the fixture body than a side at which the lamp is configured to be received, and
• the mounting shaft includes a pair of electrode plates extending perpendicular to a central axis of the mounting shaft in opposite directions from the mounting shaft, a pair of locking portions, and an operating member configured to pivot the pair of electrode plates and the locking portions about the central axis of the mounting shaft and to move the pair of electrode plates and the locking portions relative to the fixture body.