(19)
(11) EP 1 768 468 A3

(12) EUROPEAN PATENT APPLICATION

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

(43) Date of publication A2:
28.03.2007 Bulletin 2007/13

(21) Application number: 06254893.8

(22) Date of filing: 21.09.2006
(51) International Patent Classification (IPC): 
H05B 41/288(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK RS

(30) Priority: 22.09.2005 JP 2005276617
11.08.2006 JP 2006220526

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

(72) Inventors:
  • Kamata, Masahiko, c/o Toshiba Lighting &
    Shinagawa-ku Tokyo 140-8640 (JP)
  • Takahara, Yuuichiro, c/o Toshiba Lighting &
    Shinagawa-ku Tokyo 140-8640 (JP)
  • Mita, Kazutoshi, c/o Toshiba Lighting &
    Shinagawa-ku Tokyo 140-8640 (JP)

(74) Representative: Jennings, Nigel Robin et al
Kilburn & Strode LLP 20 Red Lion Street
London WC1R 4PJ
London WC1R 4PJ (GB)

   


(54) High intensity discharge lamp lighting device and illumination apparatus


(57) A lighting device which lights a high intensity discharge lamp (7) adds together a high-frequency component from high-frequency generating means (3) and a low-frequency component from low-frequency generating means (4) in adding means (6) and supplies a superimposed wave current containing the high-frequency component and low-frequency component to the high intensity discharge lamp (7) to light the same.







Search report