EP 0765528 A1 19970402 - ELECTRIC INCANDESCENT LAMP AND RADIANT BODY FOR INCANDESCENT LAMPS
Title (en)
ELECTRIC INCANDESCENT LAMP AND RADIANT BODY FOR INCANDESCENT LAMPS
Title (de)
ELEKTRISCHE GLÜHLAMPE UND LEUCHTKÖRPER FÜR GLÜHLAMPEN
Title (fr)
LAMPE INCANDESCENTE ELECTRIQUE ET CORPS LUMINESCENT POUR LAMPES INCANDESCENTES
Publication
Application
Priority
- DE 9500718 W 19950601
- DE 4420607 A 19940613
Abstract (en)
[origin: US5811934A] PCT No. PCT/DE95/00718 Sec. 371 Date Nov. 25, 1996 Sec. 102(e) Date Nov. 25, 1996 PCT Filed Jun. 1, 1995 PCT Pub. No. WO95/34910 PCT Pub. Date Dec. 21, 1995An electric incandescent lamp (4), in particular an incandescent halogen lamp, has a bulb or envelope (5), which is shaped as an ellipsoid or optionally ellipsoidlike (barrel-shaped body) and provided with an IR layer (8). Located inside the bulb (5) axially is a compact filament (2') of circular-cylindrical outer contour; the focal lines of the ellipsoid-like barrel-shaped body each coincide approximately with the last luminous winding on the two ends of the filament. This improves lamp efficiency. The compact filament is preferably in the form of a helical coil (2'), whose power supply lead (10b) remote from the seal is returned to inside the helical coil (2'), or is shaped like a double helix.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
H01K 1/28 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE ES FR GB IT NL
DOCDB simple family (publication)
US 5811934 A 19980922; CA 2192087 A1 19951221; CA 2192087 C 20030408; CN 1068455 C 20010711; CN 1150863 A 19970528; DE 4420607 A1 19951214; DE 59506803 D1 19991014; EP 0765528 A1 19970402; EP 0765528 B1 19990908; ES 2137517 T3 19991216; HU 218060 B 20000528; HU 9603431 D0 19970228; HU T75819 A 19970528; JP 3886529 B2 20070228; JP H10501368 A 19980203; TW 446990 B 20010721; WO 9534910 A1 19951221
DOCDB simple family (application)
US 73787396 A 19961125; CA 2192087 A 19950601; CN 95193587 A 19950601; DE 4420607 A 19940613; DE 59506803 T 19950601; DE 9500718 W 19950601; EP 95920744 A 19950601; ES 95920744 T 19950601; HU 9603431 A 19950601; JP 50144996 A 19950601; TW 84105728 A 19950607