Patent ID: 8303148

Claim:
A luminaire comprising: an illumination unit, the illumination unit comprising: at least one light emitting diode chip; and a housing that at least partially surrounds the at least one light emitting diode chip and is provided with fastening means for mounting the illumination unit on a luminaire part; wherein the fastening means comprise a projection or a depression that is arranged at a circumference on the housing and cooperates with a counterpart, coordinated in an accurately fitting manner therewith, on the luminaire part of the luminaire such that the projection or the depression and the counterpart interlock in an accurately fitting manner; wherein said projection or depression includes a first bore, and the accurately fitting counterpart includes a second bore, said first and second bores being coaxially aligned for mounting the illumination unit on the luminaire part, and at least one of said first and second bores being constricted in a stepped manner; and wherein said first and said second bores are formed as a component of a screw connection between the illumination unit and the luminaire part.