LED drive circuit and LED illumination light

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(11)

EP 2 519 078 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 A1)

(48)	Corrigendum issued on:
	02.01.2013 Bulletin 2013/01

(88)	Date of publication A3:
	31.10.2012 Bulletin 2012/44

(43)	Date of publication:
	31.10.2012 Bulletin 2012/44

(21)	Application number: 12002913.7

(22)	Date of filing: 25.04.2012

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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

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Priority:

27.04.2011 JP 2011099534

(71)	Applicant: Sharp Kabushiki Kaisha
	Osaka-shi Osaka 545-8522 (JP)

(72)	Inventors:
	Kanamori, Atsushi Osaka-shi Osaka 545-8522 (JP) Warita, Hirohisa Osaka-shi Osaka 545-8522 (JP) Shimizu, Takayuki Osaka-shi Osaka 545-8522 (JP)

(74)	Representative: Müller - Hoffmann & Partner
	Patentanwälte Innere Wiener Strasse 17 81667 München 81667 München (DE)

(54)	LED drive circuit and LED illumination light

(57) An LED drive circuit (600) that is connectable to an a.c. power supply (100) via a phase control type light adjuster (200) and drives an LED load (400), including a discharge portion (6) that consumes energy of a resonance phenomenon generated by a light adjuster capacitance component (CLC) of the phase control type light adjuster and a light adjuster inductance component (LLC) of the phase control type light adjuster when a current holding portion (Tri) of the phase control type light adjuster is turned on.