ENVIRONMENTALLY SEALED LIGHTING FIXTUREAbstract of the DisclosureA rectangular reflector sheet of relatively stiff aluminum iscurved into the general shape of an elongated parabola and is inserted into acylindrical transparent glass tube so that the edge portions of the sheet pressoutwardly against the tube. A set of end closure caps or members areclamped against the ends of the tube by a pair of tie bolts which extend axiallybetween the reflector sheet and the inner surface of the tube. Each of theend closure members is provided with an annular groove which receives anannular resilient gasket and the corresponding end of the tube to form afluid-tight seal between the tube and the closure member. One of the endclosure members has an eccentrically located hollow hub portion whichsupports a socket for receiving the socket end of an elongated lamp elementextending along the offset focal axis of the curved reflector sheet. The otherend closure member has a similar eccentric hub portion which supports amember for conducting heat from the lamp element as well as for supportingthe opposite end of the lamp element. Both of the end closure members alsosupport corresponding end reflector panels which project cantileveredly intothe tube, and the closure members are provided with outwardly projectingribs for radiating heat from the light fixture.
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