DK2344939T3 - Fremgangsmåder og systemer til at bevare belysningsintensiteten af lysemitterende dioder - Google Patents

Fremgangsmåder og systemer til at bevare belysningsintensiteten af lysemitterende dioder Download PDF

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Publication number
DK2344939T3
DK2344939T3 DK09816843.8T DK09816843T DK2344939T3 DK 2344939 T3 DK2344939 T3 DK 2344939T3 DK 09816843 T DK09816843 T DK 09816843T DK 2344939 T3 DK2344939 T3 DK 2344939T3
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DK
Denmark
Prior art keywords
led
current
temperature
thermal sensor
circuit
Prior art date
Application number
DK09816843.8T
Other languages
English (en)
Inventor
Vadim Zlotnikov
John B Gunter
Jim Coker
George Berman
Valeriy K Berger
Original Assignee
Luminator Holding Lp
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 Luminator Holding Lp filed Critical Luminator Holding Lp
Application granted granted Critical
Publication of DK2344939T3 publication Critical patent/DK2344939T3/da

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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]
    • H05B45/10—Controlling the intensity of the light
    • 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]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • H05B45/56—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving measures to prevent abnormal temperature of the LEDs

Landscapes

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

Claims (15)

1. Kredsløb der omfatter: en spændingskilde; en lysemitterende diode (LED), der har et minimalt intensitetsniveau tilknyttet dertil, hvor det minimale intensitetsniveau korrelerer med et LED temperatursætpunkt; en termisk sensor i nærheden af LED'en og indrettet til at måle en temperatur nær LED'en; en strømregulator virksomt sammenkoblet med spændingskilden, den termiske sensor og LED'en; hvor der i respons til en målt temperatur, som er større end det forudbestemte LED temperatursætpunkt, øges strømmen der forsynes til LED'en, og hvor en LED belysningsintensitet ikke er mindre end det minimale intensitetsniveau ved det forøgede strømniveau.
2. Kredsløbet ifølge krav 1 hvor: den termiske sensor omfatter en afbryder indrettet til at aktivere i respons til at temperatursætpunktet overskrides; og at aktiveringen resulterer i overførslen af et signal til strømregulatoren.
3. Kredsløbet ifølge krav 1 hvor den termiske sensor omfatter en modstandsprogrammerbar SOT temperaturafbryder.
4. Kredsløbet ifølge krav 1 hvor den termiske sensor er placeret tilstødende til et LED-forbindelsespunkt af LED'en, og/eller hvor den termiske sensor måler en LED-forbindelsespunkttemperatur.
5. Kredsløbet ifølge krav 1 hvor kredsløbet omfatter flere LED'er, og fortrinsvis hvor den termiske sensor er placeret i nærheden af de flere LED'er og måler en temperatur nær de flere LED'er.
6. Kredsløbet ifølge krav 5 der omfatter: flere termiske sensorer; og hvor hver af de flere termiske sensorer er placeret nær en LED af de flere LED'er, og måler en temperatur nær LED'en.
7. Kredsløbet ifølge krav 1 hvor spændingskilden er et batteri, og/eller hvor strømregulatoren omfatter et potentiometer.
8. Fremgangsmåde der omfatter: at måle en temperatur nær en LED ved hjælp af en termisk sensor; at bestemme om den målte temperatur overskrider et temperatursætpunkt, der korrelerer med et minimalt intensitetsniveau af LED'en; og at øge strømmen, der forsynes til LED'en i respons til bestemmelsen, at den målte temperatur overskrider temperatursætpunktet.
9. Fremgangsmåden ifølge krav 8 hvor trinnene i krav 8 gentages, hvis det bestemmes, at den målte temperatur ikke er højere end temperatursætpunktet.
10. Fremgangsmåden ifølge krav 8 hvor trinnet at øge strømmen omfatter: at overføre et første signal fra den termiske sensor til en strømregulator; og at overføre et andet signal fra strømregulatoren til en spændingskilde i respons til det første signal.
11. Fremgangsmåden ifølge krav 8 hvor trinnet at øge strømmen resulterer i en LED belysningsintensitet, der ikke er mindre end minimal intensitetsniveauet.
12. Fremgangsmåden ifølge krav 8 hvor den forøgede strøm er i området omkring 260 mA til omkring 330 mA.
13. Fremgangsmåden ifølge krav 11 hvor trinnet at øge strømmen omfatter at øge spændingen, der forsyner spændingskilden af et kredsløb tilknyttet LED'en, og/eller hvor trinnet at øge strømmen omfatter, at reducere modstanden af et kredsløb tilknyttet LED'en.
14. Fremgangsmåden ifølge krav 8 hvor trinnet at måle omfatter, at den termiske sensor måler en LED-forbindelsespunkttemperatur.
15. Fremgangsmåden ifølge krav 8 hvor trinnet at bestemme udføres ved hjælp af den termiske sensor.
DK09816843.8T 2008-09-24 2009-09-24 Fremgangsmåder og systemer til at bevare belysningsintensiteten af lysemitterende dioder DK2344939T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US9970208P 2008-09-24 2008-09-24
PCT/US2009/058196 WO2010036789A1 (en) 2008-09-24 2009-09-24 Methods and systems for maintaining the illumination intensity of light emittiing diodes

Publications (1)

Publication Number Publication Date
DK2344939T3 true DK2344939T3 (da) 2018-06-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
DK09816843.8T DK2344939T3 (da) 2008-09-24 2009-09-24 Fremgangsmåder og systemer til at bevare belysningsintensiteten af lysemitterende dioder

Country Status (6)

Country Link
US (5) US9301363B2 (da)
EP (1) EP2344939B1 (da)
CN (1) CN102203689B (da)
CA (3) CA3035478C (da)
DK (1) DK2344939T3 (da)
WO (1) WO2010036789A1 (da)

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Also Published As

Publication number Publication date
CN102203689B (zh) 2014-06-25
US9301363B2 (en) 2016-03-29
US10231308B2 (en) 2019-03-12
CA2738315C (en) 2017-01-03
CA2738315A1 (en) 2010-04-01
CA3035478C (en) 2021-03-23
US20160174324A1 (en) 2016-06-16
CA2948938A1 (en) 2010-04-01
CA3035478A1 (en) 2010-04-01
EP2344939B1 (en) 2018-03-14
US10548198B2 (en) 2020-01-28
US9788382B2 (en) 2017-10-10
US20200113027A1 (en) 2020-04-09
EP2344939A4 (en) 2014-09-03
US20110241568A1 (en) 2011-10-06
US11134547B2 (en) 2021-09-28
US20170374717A1 (en) 2017-12-28
WO2010036789A1 (en) 2010-04-01
US20190174597A1 (en) 2019-06-06
CA2948938C (en) 2019-04-23
EP2344939A1 (en) 2011-07-20
CN102203689A (zh) 2011-09-28

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