Abstract: A light fixture for use with a high efficiency particulate air filter is disclosed which includes a peripheral frame, in which a high efficiency particulate air filter is mounted. A plurality of individual lighting elements are positioned in the frame directly beneath the filter in the direction of air flow. The individual lighting elements each include an elongated streamlined housing for receiving an elongated electric light bulb to direct laminar air flow from the filter in a non-turbulent flow pattern around the light bulbs in the housing.

Abstract: An electric light fixture is disclosed which includes a lamp head housing, a lamp or bulb within the housing and an elliptical reflector for focusing light from the lamp to a predetermined focal point. A transparent lens is positioned across the open end of the housing and and extension ring is removably mounted on that open end of the housing and extends away from the housing and the lens. This ring creates an air space beneath the lens within the confines of the ring that traps heat generated from the bulg and reflected to a position within the ring whereby dust particles are deflected away from the lens by convection air flow created as a result of the heat trapped in such space.