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WO2009113784A3 - Led drive device - Google Patents

Led drive device Download PDF

Info

Publication number
WO2009113784A3
WO2009113784A3 PCT/KR2009/001160 KR2009001160W WO2009113784A3 WO 2009113784 A3 WO2009113784 A3 WO 2009113784A3 KR 2009001160 W KR2009001160 W KR 2009001160W WO 2009113784 A3 WO2009113784 A3 WO 2009113784A3
Authority
WO
WIPO (PCT)
Prior art keywords
led
power
regular
input lines
source input
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/KR2009/001160
Other languages
French (fr)
Korean (ko)
Other versions
WO2009113784A2 (en
Inventor
한보현
박진표
이정주
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AMO Co Ltd
Original Assignee
AMO Co Ltd
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
Priority claimed from KR1020080023854A external-priority patent/KR20090098451A/en
Priority claimed from KR1020080026782A external-priority patent/KR20090101570A/en
Priority claimed from KR1020080042102A external-priority patent/KR100958435B1/en
Priority claimed from KR1020080082970A external-priority patent/KR100971789B1/en
Priority claimed from KR1020080094458A external-priority patent/KR100978388B1/en
Application filed by AMO Co Ltd filed Critical AMO Co Ltd
Publication of WO2009113784A2 publication Critical patent/WO2009113784A2/en
Publication of WO2009113784A3 publication Critical patent/WO2009113784A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits

Landscapes

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

Abstract

The present invention concerns an LED drive device which is arranged in such a way as to be able to block leakage current and which is also arranged in such a way as to be able to smoothly drive the LED. The LED drive device of the present invention is one in which LED modules arrayed on a metal PCB are connected to a plurality of regular-power-source input lines, and it comprises cut-off elements which are respectively provided on all of the input lines of the LED modules connected to the plurality of regular-power-source input lines and which are for cutting off the regular-power-source input to all of the input lines of the LED modules. When switched off, both sides of the regular-power-source input line are turned off. Consequently, in principle, there is no scope to produce any leakage current since there is no way that an electrical potential could be generated in the circuit layer (copper foil) of the metal PCB. More specifically, when it is switched off, the LED module (alternating-current LED module) is immediately turned off and thus not only can operational reliability be ensured but also unnecessary power loss is prevented.
PCT/KR2009/001160 2008-03-14 2009-03-09 Led drive device Ceased WO2009113784A2 (en)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
KR1020080023854A KR20090098451A (en) 2008-03-14 2008-03-14 Leakage current blocking device of LED luminaire
KR10-2008-0023854 2008-03-14
KR10-2008-0026782 2008-03-24
KR1020080026782A KR20090101570A (en) 2008-03-24 2008-03-24 Apparatus for driving led
KR10-2008-0042102 2008-05-07
KR1020080042102A KR100958435B1 (en) 2008-05-07 2008-05-07 Leakage current breaker when switching off from AC LED luminaire
KR10-2008-0082970 2008-08-25
KR1020080082970A KR100971789B1 (en) 2008-08-25 2008-08-25 AC LED drive circuit
KR1020080094458A KR100978388B1 (en) 2008-09-26 2008-09-26 Low Voltage AC Power Inverter
KR10-2008-0094458 2008-09-26

Publications (2)

Publication Number Publication Date
WO2009113784A2 WO2009113784A2 (en) 2009-09-17
WO2009113784A3 true WO2009113784A3 (en) 2009-12-17

Family

ID=41065655

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2009/001160 Ceased WO2009113784A2 (en) 2008-03-14 2009-03-09 Led drive device

Country Status (1)

Country Link
WO (1) WO2009113784A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI477194B (en) * 2013-05-29 2015-03-11 Richtek Technology Corp Light emitting diode drive device
KR101695202B1 (en) * 2015-01-20 2017-01-11 주식회사 소프트커널 Leakage Current Cut-off Device for Electrical Load
CN109639140B (en) * 2019-01-11 2020-06-02 武汉精立电子技术有限公司 PCB board of DC-DC switching power supply

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0652341U (en) * 1993-04-09 1994-07-15 林原 健 Lighting equipment
KR20010079315A (en) * 2001-07-06 2001-08-22 이계선 The circute for the traffic signal lamps using LED
JP2004327152A (en) * 2003-04-23 2004-11-18 Toshiba Lighting & Technology Corp LED lighting device and LED lighting equipment
JP2004335128A (en) * 2003-04-30 2004-11-25 Toshiba Lighting & Technology Corp LED lighting device and LED beacon

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0652341U (en) * 1993-04-09 1994-07-15 林原 健 Lighting equipment
KR20010079315A (en) * 2001-07-06 2001-08-22 이계선 The circute for the traffic signal lamps using LED
JP2004327152A (en) * 2003-04-23 2004-11-18 Toshiba Lighting & Technology Corp LED lighting device and LED lighting equipment
JP2004335128A (en) * 2003-04-30 2004-11-25 Toshiba Lighting & Technology Corp LED lighting device and LED beacon

Also Published As

Publication number Publication date
WO2009113784A2 (en) 2009-09-17

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