EP1341402A3 - Lighting device with a LED-module - Google Patents

Lighting device with a LED-module Download PDF

Info

Publication number
EP1341402A3
EP1341402A3 EP03004441A EP03004441A EP1341402A3 EP 1341402 A3 EP1341402 A3 EP 1341402A3 EP 03004441 A EP03004441 A EP 03004441A EP 03004441 A EP03004441 A EP 03004441A EP 1341402 A3 EP1341402 A3 EP 1341402A3
Authority
EP
European Patent Office
Prior art keywords
led module
power supply
measuring signal
led
module
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.)
Withdrawn
Application number
EP03004441A
Other languages
German (de)
French (fr)
Other versions
EP1341402A2 (en
Inventor
Simon BLÜMEL
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.)
Ams Osram International GmbH
Original Assignee
Osram Opto Semiconductors 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 Osram Opto Semiconductors GmbH filed Critical Osram Opto Semiconductors GmbH
Publication of EP1341402A2 publication Critical patent/EP1341402A2/en
Publication of EP1341402A3 publication Critical patent/EP1341402A3/en
Withdrawn legal-status Critical Current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]
    • H05B45/50—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]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/12—Controlling the intensity of the light using optical feedback
    • 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
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H05B47/25—Circuit arrangements for protecting against overcurrent

Abstract

Die Erfindung betrifft eine Beleuchtungsanordnung mit einem LED-Modul (1) und einem Netzteil (2) zur elektrischen Versorgung des LED-Moduls, wobei ein von einer optischen Ausgangsgröße des LED-Moduls abhängiges Meßsignal (6) erzeugt wird, das Meßsignal (6) in das Netzteil (2) eingespeist wird, und das Netzteil (2) die elektrische Versorgung des LED-Moduls (1) so anhand des Meßsignals (6) regelt, daß im Betrieb das LED-Modul (1) eine vorgegebene optische Soll-Ausgangsgröße einhält, oder das Netzteil (2) in Abhängigkeit des Meßsignals (6) die elektrische Versorgung des LED-Moduls unterbricht.

Figure imgaf001
The invention relates to a lighting arrangement with an LED module (1) and a power supply (2) for the electrical supply of the LED module, wherein a dependent of an optical output of the LED module measuring signal (6) is generated, the measuring signal (6). in the power supply (2) is fed, and the power supply (2) the electrical supply of the LED module (1) so on the basis of the measuring signal (6) controls that in operation, the LED module (1) has a predetermined optical target output complies, or the power supply (2) interrupts the electrical supply of the LED module in response to the measuring signal (6).
Figure imgaf001
EP03004441A 2002-02-27 2003-02-27 Lighting device with a LED-module Withdrawn EP1341402A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10208462 2002-02-27
DE10208462A DE10208462A1 (en) 2002-02-27 2002-02-27 lighting arrangement

Publications (2)

Publication Number Publication Date
EP1341402A2 EP1341402A2 (en) 2003-09-03
EP1341402A3 true EP1341402A3 (en) 2008-07-16

Family

ID=27675050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03004441A Withdrawn EP1341402A3 (en) 2002-02-27 2003-02-27 Lighting device with a LED-module

Country Status (2)

Country Link
EP (1) EP1341402A3 (en)
DE (1) DE10208462A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10245626A1 (en) * 2002-09-30 2004-04-08 Osram Opto Semiconductors Gmbh Circuitry to reduce ripple for LED arrangement, uses detected light intensity of LEDs to adjust to nominal light intensity for LED traffic lights
JP4439457B2 (en) 2005-02-14 2010-03-24 株式会社小糸製作所 Vehicle lamp system
DE102005023295A1 (en) * 2005-05-12 2006-11-16 Siemens Ag Circuit for controlling and monitoring a light signal
DE102005036692A1 (en) * 2005-08-04 2007-02-08 Hella Kgaa Hueck & Co. Lighting device for vehicle lamp, has LED matrix, in which LEDs are arranged in parallel/serial circuit, and one light emitting diode, which is not part of network and attached to failure recognizing detector that is connected to matrix
DE102009056809A1 (en) * 2009-12-04 2011-06-09 Westiform Holding Ag Neon sign i.e. neon character, has memory storing signal representative of initial brightness of LEDs, and control device controlling current supply device for LEDs so that actual value is brought closer to target value
DE102012206891A1 (en) * 2012-04-26 2013-10-31 Zumtobel Lighting Gmbh Arrangement and method for assessing the condition of an electronic unit used for lighting purposes
PL3165053T3 (en) * 2014-09-29 2019-04-30 Siemens Mobility GmbH Apparatus and method for monitoring a signal transmitter of a traffic control signal installation, which signal transmitter comprises a light-emitting diode

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4983884A (en) * 1989-08-29 1991-01-08 Amp Incorporated Constant intensity light source for fiber optic testing
US6095661A (en) * 1998-03-19 2000-08-01 Ppt Vision, Inc. Method and apparatus for an L.E.D. flashlight
US6153985A (en) * 1999-07-09 2000-11-28 Dialight Corporation LED driving circuitry with light intensity feedback to control output light intensity of an LED
EP1077444A2 (en) * 1999-08-11 2001-02-21 Agilent Technologies Inc System and method for on-chip calibration of illumination sources for an integrated circuit display
US6236331B1 (en) * 1998-02-20 2001-05-22 Newled Technologies Inc. LED traffic light intensity controller

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4983884A (en) * 1989-08-29 1991-01-08 Amp Incorporated Constant intensity light source for fiber optic testing
US6236331B1 (en) * 1998-02-20 2001-05-22 Newled Technologies Inc. LED traffic light intensity controller
US6095661A (en) * 1998-03-19 2000-08-01 Ppt Vision, Inc. Method and apparatus for an L.E.D. flashlight
US6153985A (en) * 1999-07-09 2000-11-28 Dialight Corporation LED driving circuitry with light intensity feedback to control output light intensity of an LED
EP1077444A2 (en) * 1999-08-11 2001-02-21 Agilent Technologies Inc System and method for on-chip calibration of illumination sources for an integrated circuit display

Also Published As

Publication number Publication date
DE10208462A1 (en) 2003-09-04
EP1341402A2 (en) 2003-09-03

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