Filament support for tubular lamp capsule

Details Filament support for tubular lamp capsule Filament support for tubular lamp capsule

H - Electricity

01

K

H01K 1/24 (2006.01) H01J 9/24 (2006.01) H01J 61/35 (2006.01) H01J 61/36 (2006.01) H01J 61/38 (2006.01)

Patent

CA 2101739

2101739 9313545 PCTABS00024 A filament support (50) for supporting and centering a filament (80) in a double-ended lamp envelope (82) includes 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) includes first and second arcuate segments (60, 62) for contacting an inner surface of the lamp envelope (82). The first (60) and second (62) arcuate segments are axially spaced apart and are interconnected by an axial segment (64). Filament supports (50) are connected to opposite ends of the filament (80) for accurately centering the filament (80) in 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.

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