FILAMENT SUPPORT FOR TUBULAR LAMP CAPSULE

摘要

2101741 9313544 PCTABS00024 Filament supports (50) for supporting and centering a filament (80) in a double-ended lamp envelope (82) include an inlead portion (52) defining a central axis (94), a filament attachment portion (54) and a centering portion (56) interconnecting the inlead portion (52) and the filament attachment portion (54). The centering portion (56) contacts an inner surface of the lamp envelope (82) at a plurality of discrete, circumferentially spaced-apart contact regions that are substantially equally spaced from the central axis (94). The filament supports (50) are attached to opposite ends of the filament (80) for accurately centering the filament (80) within the lamp envelope (82). The filament supports (50) are particularly useful in a tubular incandescent lamp capsule having an infrared reflective coating (96) on its outer surface.