(19)
(11) EP 2 503 850 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
11.06.2014 Bulletin 2014/24

(43) Date of publication A2:
26.09.2012 Bulletin 2012/39

(21) Application number: 12159966.6

(22) Date of filing: 16.03.2012
(51) International Patent Classification (IPC): 
H05B 33/08(2006.01)
(84) Designated Contracting States:
AL 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 RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 22.03.2011 JP 2011062449

(71) Applicant: Panasonic Corporation
Osaka 571-8501 (JP)

(72) Inventor:
  • Ido, Shigeru
    Habikino, Osaka (JP)

(74) Representative: Rüger, Barthelt & Abel 
Webergasse 3
73728 Esslingen
73728 Esslingen (DE)

   


(54) Illumination fixture


(57) [Object] To provide an illumination fixture capable of reducing power loss and improving convenience of a lighting control operation.
[Means for Settlement] There are provided a plurality of light source parts 1 each including a light-emitting diode 10, a triac TR1 serially connected to a commercial power source AC1, a dimmer 2 for controlling the triac TR1 to make a conduction angle of a power source voltage of the commercial power source AC1 variable, and a current adjusting part 3 for keeping a holding current flowing through the triac TR1 to be a certain value or larger in a conductive period of the triac TR1, and the current adjusting part 3 includes a resistor R13 that is connected to each of the light source parts 1 in parallel when the power source voltage of the commercial power source AC1 falls below a predetermined threshold value, and is released in connection to each of the light source parts 1 when the power source voltage of the commercial power source AC1 exceeds the predetermined threshold value, and a signal outputting part 30 for outputting a signal to an external device according to an input current I1 inputted to the current adjusting part 3.







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