(19)
(11) EP 0 122 045 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
23.10.1985 Bulletin 1985/43

(43) Date of publication A2:
17.10.1984 Bulletin 1984/42

(21) Application number: 84301593

(22) Date of filing: 09.03.1984
(84) Designated Contracting States:
DE NL

(30) Priority: 08.04.1983 GB 8309560

(71) Applicant: THE GENERAL ELECTRIC COMPANY, p.l.c.
 ()

(72) Inventors:
  • Ridgen, Sydney Alfred Richard
     ()
  • Skeldon, Graham Warren
     ()

   


(54) Incandescent lamps


(57) Conventional incandescent filament lamps have an even number of filament sections so that the connections of the filament to the support wires are both at the same end of the bulb. It is found that in the horizontal position such bulbs burn out very quickly compared to their lifetime in the vertical position. Hence a lamp is provided with an odd number of filament sections (5) with the connections to the support wires (6, 7) being at opposite ends of the bulb. This significantly prolongs the lifetime of the bulb when in the horizontal position.






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