The figure shows the top plan view onto a circularly round reflector having a domed part (10) which continues in a cylindrical part (11). A wire bracket (14) of rectangular basic form is transversely fitted on said cylindrical part. The legs (14b) of the wire bracket are accommodated by slots in the cylinder wall. The legs form chord sections which project inside and have the function of threads of an inner thread so that, due to the simple aid of the bracket, the possibility exists to screw the reflector onto the outer threads of a commercially available lamp holder (lamp mount). <IMAGE>
