(19)
(11) EP 2 105 947 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
30.12.2009 Bulletin 2009/53

(43) Date of publication A2:
30.09.2009 Bulletin 2009/40

(21) Application number: 09250518.9

(22) Date of filing: 26.02.2009
(51) International Patent Classification (IPC): 
H01J 61/32(2006.01)
H01J 61/35(2006.01)
 H01J 61/34(2006.01)
H01J 9/26(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA RS

(30) Priority: 29.02.2008 JP 2008049411
21.03.2008 JP 2008073643
31.07.2008 JP 2008197510

(71) Applicant: Toshiba Lighting & Technology Corporation
Shinagawa-ku, Tokyo 140-8640 (JP)

(72) Inventors:
  • Ikada, Kunihiko
    Tokyo 140-8640 (JP)
  • Sanpei, Tomohiro
    Tokyo 140-8640 (JP)
  • Matsunaga, Yoshiyuki
    Tokyo 140-8640 (JP)

(74) Representative: Shindler, Nigel 
Brookes Batchellor LLP 102-108 Clerkenwell Road
London EC1M 5SA
London EC1M 5SA (GB)

   


(54) Self-ballasted fluorescent lamp and illumination apparatus


(57) The present invention provides a self-ballasted fluorescent lamp L1 which can prevent deterioration of a synthetic-resin globe 6. In the other end side of a cover 2 having a ferrule 1 at one end of the cover 2, a light-emitting tube 4 is arranged and a globe 6 housing the light-emitting tube 4 is attached. The globe 6 is formed with a translucent synthetic resin added to an ultraviolet absorber. A lighting device 5 is housed in the cover 2. The light-emitting tube 4 has a bulb 4d provided with a pair of electrodes 4q, 4r at both ends. An ultraviolet absorbing film 4n is formed on an inner wall surface 4d-1 of the bulb 4d, and a phosphor layer 4m is formed on the ultraviolet absorbing film 4n.







Search report