Lamp for fastening to building ceiling, has strip-shaped function optic unit i.e. Fresnel plate, extending over light width of profiled rail in longitudinal direction and inserted into grooves opened to each other

摘要

The lamp has LEDs staying in heat conductive contact and extending in a longitudinal direction. A rectangular housing (1) has a base plate (2) that exhibits a U-shaped profiled rail (16). The profiled rail is provided with profile walls projecting from a profile bottom such that the profiled rail supports the LEDs. The profile walls comprise module grooves opened to each other. A strip-shaped function optic unit (21) i.e. Fresnel plate, extends over light width of the profiled rail in the longitudinal direction and is inserted into the grooves.