may be added to the tubular heat sink to enhance heat flow light source 100 is mounted into a fixture and retained in position by mounting clips 121 123 as most clearly seen in fig3 and s each of the clips is shaped so as to engage and retain light source 100 each clip is affixed on one surface 122 124 to a light fixture although light source 100 is shown as comprising an elongate tubular heat sink other extruded elongate members may be used such as channels in the illustrative embodiment shown convection cooling by flow of air through tubular heat sink 101 is utilized such that cool or unheated air enters tubular heat sink 101 at its lower end and exits from the upper end as heated air in higher wattage light sources rather than utilizing air as the cooling medium other fluids may be utilized in particular convective heat pumping may be used to remove heat from the interior of the heat sink in one particularly advantageous embodiment of the invention the light source of the invention is configured to replace compact fluorescent lighting in decorative applications as will be appreciated by those skilled in the art the principles of the invention are not limited to the use.