(19)
(11) EP 0 269 360 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
13.06.1990 Bulletin 1990/24

(43) Date of publication A2:
01.06.1988 Bulletin 1988/22

(21) Application number: 87310167.9

(22) Date of filing: 18.11.1987
(51) International Patent Classification (IPC)4H01J 61/52, H01J 61/02, H01J 61/18, H01J 61/36
(84) Designated Contracting States:
AT BE CH DE ES FR GB GR IT LI LU NL SE

(30) Priority: 21.11.1986 GB 8627934

(71) Applicant: GE LIGHTING LIMITED
Enfield, Middlesex EN1 1SB (GB)

(72) Inventors:
  • Smith, Victor Mark
    Royston Hertfordshire (GB)
  • Parlour, David Wynn
    Broxbourne Herfordshire (GB)

(74) Representative: Pratt, Richard Wilson 
London Patent Operation G.E. Technical Services Co. Inc. Essex House 12/13 Essex Street
London WC2R 3AA
London WC2R 3AA (GB)


(56) References cited: : 
   
       


    (54) Improvements in or relating to metal vapour discharge lamps


    (57) A metal vapour discharge lamp includes a heat sink material (4) which is in thermal contact with the lamp exhaust tube (5). The heat sink material (4) bridges a gap between the exhaust tube (5) and a metal eyelet (1) mounted in an end cap (2) of the lamp. The heat sink material may be contained within a metal cap (10).







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