WO2014173879A3 - Led circuit configuration - Google Patents

Led circuit configuration Download PDF

Info

Publication number
WO2014173879A3
WO2014173879A3 PCT/EP2014/058104 EP2014058104W WO2014173879A3 WO 2014173879 A3 WO2014173879 A3 WO 2014173879A3 EP 2014058104 W EP2014058104 W EP 2014058104W WO 2014173879 A3 WO2014173879 A3 WO 2014173879A3
Authority
WO
WIPO (PCT)
Prior art keywords
circuit configuration
led circuit
led
strings
led strings
Prior art date
Application number
PCT/EP2014/058104
Other languages
German (de)
French (fr)
Other versions
WO2014173879A2 (en
Inventor
Cristian OLARIU
Original Assignee
Zumtobel Lighting Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zumtobel Lighting Gmbh filed Critical Zumtobel Lighting Gmbh
Priority to EP14721283.1A priority Critical patent/EP2989858B1/en
Publication of WO2014173879A2 publication Critical patent/WO2014173879A2/en
Publication of WO2014173879A3 publication Critical patent/WO2014173879A3/en

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • H05B45/46—Details of LED load circuits with an active control inside an LED matrix having LEDs disposed in parallel lines

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Led Devices (AREA)

Abstract

In an LED circuit configuration (1) having a plurality of LED strings (11) connected in parallel which are provided for supply by a common operational device (3), one element for limiting the current (15) is arranged in each subset of LED strings (11) comprising at least one LED string.
PCT/EP2014/058104 2013-04-25 2014-04-22 Led circuit configuration WO2014173879A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14721283.1A EP2989858B1 (en) 2013-04-25 2014-04-22 Led circuit configuration

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202013101793.0 2013-04-25
DE202013101793.0U DE202013101793U1 (en) 2013-04-25 2013-04-25 LED circuit arrangement

Publications (2)

Publication Number Publication Date
WO2014173879A2 WO2014173879A2 (en) 2014-10-30
WO2014173879A3 true WO2014173879A3 (en) 2015-04-09

Family

ID=50639466

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/058104 WO2014173879A2 (en) 2013-04-25 2014-04-22 Led circuit configuration

Country Status (3)

Country Link
EP (1) EP2989858B1 (en)
DE (1) DE202013101793U1 (en)
WO (1) WO2014173879A2 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006126172A2 (en) * 2005-05-25 2006-11-30 Koninklijke Philips Electronics, N.V. Flux compensation led driver system and method
US20090273288A1 (en) * 2008-03-12 2009-11-05 Freescale Semiconductor, Inc. Led driver with dynamic power management
US20100164403A1 (en) * 2008-12-31 2010-07-01 O2Micro, Inc. Circuits and methods for controlling LCD backlights
US20110043138A1 (en) * 2009-08-24 2011-02-24 Kuo-Ching Hsu Light Emitting Device Capable of Dynamically Regulating Output Voltage and Related Control Method
US20110133645A1 (en) * 2009-12-30 2011-06-09 Ching-Chuan Kuo Circuits and methods for powering light source with balanced currents
US20120119650A1 (en) * 2009-03-09 2012-05-17 Dong-Won Lee Active constant power supply apparatus
US20120306386A1 (en) * 2011-06-06 2012-12-06 Tdk-Lambda Corporation Led drive device and led illuminating device
US20130088169A1 (en) * 2010-05-31 2013-04-11 Inventronics (Hangzhou), Inc. Constant-current led driver circuit and output voltage adjustable circuit and method thereof

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2707223B1 (en) * 1993-07-07 1995-09-29 Valeo Vision Improved signaling light with light-emitting diodes.
ES2173429T3 (en) * 1996-11-12 2002-10-16 L F D Ltd LAMP
JP2008130377A (en) * 2006-11-21 2008-06-05 Matsushita Electric Works Ltd Led lighting circuit and illumination fixture using it
US8035307B2 (en) * 2008-11-03 2011-10-11 Gt Biomescilt Light Limited AC to DC LED illumination devices, systems and methods
US8710754B2 (en) * 2011-09-12 2014-04-29 Juno Manufacturing Llc Dimmable LED light fixture having adjustable color temperature
TW201347600A (en) * 2012-01-26 2013-11-16 Vishay Dale Electronics Inc Integrated circuit element and electronic circuit for light emitting diode applications
US8878443B2 (en) * 2012-04-11 2014-11-04 Osram Sylvania Inc. Color correlated temperature correction for LED strings
DE102012206888A1 (en) * 2012-04-26 2013-10-31 Zumtobel Lighting Gmbh LED array

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006126172A2 (en) * 2005-05-25 2006-11-30 Koninklijke Philips Electronics, N.V. Flux compensation led driver system and method
US20090273288A1 (en) * 2008-03-12 2009-11-05 Freescale Semiconductor, Inc. Led driver with dynamic power management
US20100164403A1 (en) * 2008-12-31 2010-07-01 O2Micro, Inc. Circuits and methods for controlling LCD backlights
US20120119650A1 (en) * 2009-03-09 2012-05-17 Dong-Won Lee Active constant power supply apparatus
US20110043138A1 (en) * 2009-08-24 2011-02-24 Kuo-Ching Hsu Light Emitting Device Capable of Dynamically Regulating Output Voltage and Related Control Method
US20110133645A1 (en) * 2009-12-30 2011-06-09 Ching-Chuan Kuo Circuits and methods for powering light source with balanced currents
US20130088169A1 (en) * 2010-05-31 2013-04-11 Inventronics (Hangzhou), Inc. Constant-current led driver circuit and output voltage adjustable circuit and method thereof
US20120306386A1 (en) * 2011-06-06 2012-12-06 Tdk-Lambda Corporation Led drive device and led illuminating device

Also Published As

Publication number Publication date
EP2989858A2 (en) 2016-03-02
WO2014173879A2 (en) 2014-10-30
EP2989858B1 (en) 2021-03-10
DE202013101793U1 (en) 2014-07-29

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