Abstract: A lighting system has a power source and a light head including a high intensity discharge lamp. The lamp is supported by a support base on a sealed electronics container that includes walls defining a space within which an electronic ballast is enclosed in proximity to the lamp to insure reliable ignition. A cover surrounding the lamp and sealed to the support base includes a portion allowing light to project outwardly from the light head. Thermally conductive material surrounds and contacts the electronic ballast and also the interior of the walls of the container so that the container extracts heat away from the ballast to the walls of the container.

Abstract: A portable battery powered high intensity lighting system that produces solar quality illumination at four to six times the efficiency of comparable incandescent lighting systems includes a light head and a power source. The light head contains an HID (high intensity discharge) arc lamp. A sealed enclosure containing a ballast is attached immediately adjacent to the lamp assembly. The ballast enclosure is preferably potted with a thermally conductive epoxy.