WO2014013452A3 - Lighting device comprising a monitoring circuit - Google Patents

Lighting device comprising a monitoring circuit Download PDF

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Publication number
WO2014013452A3
WO2014013452A3 PCT/IB2013/055880 IB2013055880W WO2014013452A3 WO 2014013452 A3 WO2014013452 A3 WO 2014013452A3 IB 2013055880 W IB2013055880 W IB 2013055880W WO 2014013452 A3 WO2014013452 A3 WO 2014013452A3
Authority
WO
WIPO (PCT)
Prior art keywords
lighting device
monitoring circuit
failure
output voltage
light source
Prior art date
Application number
PCT/IB2013/055880
Other languages
French (fr)
Other versions
WO2014013452A2 (en
Inventor
Jeroen Johannes Maria ZAAL
Franciska Elisabeth EVERTZ
Willem Dirk Van Driel
Original Assignee
Koninklijke Philips N.V.
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 Koninklijke Philips N.V. filed Critical Koninklijke Philips N.V.
Publication of WO2014013452A2 publication Critical patent/WO2014013452A2/en
Publication of WO2014013452A3 publication Critical patent/WO2014013452A3/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]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • H05B45/58—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving end of life detection of LEDs
    • 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
    • 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
    • H05B45/395—Linear regulators

Abstract

According to the present invention, a lighting device (100) and a method of indicating an incipient failure in a lighting device are provided. The lighting device comprises a light source (1), a constant current driver (2) configured to provide an output voltage for driving the light source and a monitoring circuit (4). The monitoring circuit is configured to monitor the output voltage, detect when the output voltage exceeds a threshold and actuate a failure indicator (8) based on the detection. The present invention is advantageous in that notification about an upcoming failure in the lighting device may be obtained before the failure is complete, thereby preventing the occurrence of an imminent light out.
PCT/IB2013/055880 2012-07-19 2013-07-17 Lighting device comprising a monitoring circuit WO2014013452A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261673297P 2012-07-19 2012-07-19
US61/673,297 2012-07-19

Publications (2)

Publication Number Publication Date
WO2014013452A2 WO2014013452A2 (en) 2014-01-23
WO2014013452A3 true WO2014013452A3 (en) 2014-07-03

Family

ID=49253360

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2013/055880 WO2014013452A2 (en) 2012-07-19 2013-07-17 Lighting device comprising a monitoring circuit

Country Status (1)

Country Link
WO (1) WO2014013452A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019218129A1 (en) * 2018-05-15 2019-11-21 Tridonic Gmbh & Co Kg Method and device of detecting status of lamp, lamp driver

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5896084A (en) * 1997-08-12 1999-04-20 Reitter & Schefenacker Gmbh & Co. Kg Tail light assembly for motor vehicles
US6400095B1 (en) * 1997-12-23 2002-06-04 Tridonic Bauelemente Gmbh Process and device for the detection of the rectifier effect appearing in a gas discharge lamp
WO2002051211A2 (en) * 2000-12-20 2002-06-27 Gestion Proche Inc. Lighting device
US6556017B1 (en) * 1998-10-22 2003-04-29 Safegate International Ab Deteriorated filament detection
US20070108843A1 (en) * 2005-11-17 2007-05-17 Preston Nigel A Series connected power supply for semiconductor-based vehicle lighting systems
WO2008061301A1 (en) * 2006-11-20 2008-05-29 Lednium Technology Pty Limited A fault detector and a fault detection process for lighting
US20090179595A1 (en) * 2007-10-19 2009-07-16 American Sterilizer Company Lighting control method having a light output ramping function
JP2011070947A (en) * 2009-09-25 2011-04-07 Toshiba Lighting & Technology Corp Led lamp lighting device
US20120074856A1 (en) * 2009-06-09 2012-03-29 Go Takata Light-emitting element driving device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5896084A (en) * 1997-08-12 1999-04-20 Reitter & Schefenacker Gmbh & Co. Kg Tail light assembly for motor vehicles
US6400095B1 (en) * 1997-12-23 2002-06-04 Tridonic Bauelemente Gmbh Process and device for the detection of the rectifier effect appearing in a gas discharge lamp
US6556017B1 (en) * 1998-10-22 2003-04-29 Safegate International Ab Deteriorated filament detection
WO2002051211A2 (en) * 2000-12-20 2002-06-27 Gestion Proche Inc. Lighting device
US20070108843A1 (en) * 2005-11-17 2007-05-17 Preston Nigel A Series connected power supply for semiconductor-based vehicle lighting systems
WO2008061301A1 (en) * 2006-11-20 2008-05-29 Lednium Technology Pty Limited A fault detector and a fault detection process for lighting
US20090179595A1 (en) * 2007-10-19 2009-07-16 American Sterilizer Company Lighting control method having a light output ramping function
US20120074856A1 (en) * 2009-06-09 2012-03-29 Go Takata Light-emitting element driving device
JP2011070947A (en) * 2009-09-25 2011-04-07 Toshiba Lighting & Technology Corp Led lamp lighting device

Also Published As

Publication number Publication date
WO2014013452A2 (en) 2014-01-23

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