EP1235465A3 - LED driving circuit in a vehicle - Google Patents

LED driving circuit in a vehicle Download PDF

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Publication number
EP1235465A3
EP1235465A3 EP02002848A EP02002848A EP1235465A3 EP 1235465 A3 EP1235465 A3 EP 1235465A3 EP 02002848 A EP02002848 A EP 02002848A EP 02002848 A EP02002848 A EP 02002848A EP 1235465 A3 EP1235465 A3 EP 1235465A3
Authority
EP
European Patent Office
Prior art keywords
consumer
vehicle
driving circuit
led driving
voltage
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.)
Granted
Application number
EP02002848A
Other languages
German (de)
French (fr)
Other versions
EP1235465A2 (en
EP1235465B1 (en
Inventor
Hans-Alfred Bode
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.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
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 Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP1235465A2 publication Critical patent/EP1235465A2/en
Publication of EP1235465A3 publication Critical patent/EP1235465A3/en
Application granted granted Critical
Publication of EP1235465B1 publication Critical patent/EP1235465B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
    • 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

Abstract

Die vorliegende Erfindung betrifft eine Treiberschaltung zum Treiben eines spannungsempfindlichen Verbrauchers (8,31) von einem entfernt liegenden Steuergerät aus. Um kostengünstig zu sein und gleichzeitig Statussignale auswerten zu können wird vorgeschlagen, die Treiberschaltung selbst zur Aufrechterhaltung eines sicheren Betriebszustands des Verbrauchers vorzusehen. Dies wird realisiert durch eine steuerbare Stromquelle (T1), ein die Stromquelle ansteuerndes Regelelement (T2, T3) mit einem ersten Eingang (18) von einer vorgegebenen Referenzspannung (VCC) und einen zweiten Eingang (19) zur Zuführung der Regelspannung für den Verbraucher (8,31).

Figure 00000001
The present invention relates to a driver circuit for driving a voltage-sensitive consumer (8, 31) from a remote controller. In order to be inexpensive and at the same time be able to evaluate status signals, it is proposed to provide the driver circuit itself for maintaining a safe operating state of the consumer. This is realized by a controllable current source (T1), a current source driving the control element (T2, T3) having a first input (18) of a predetermined reference voltage (VCC) and a second input (19) for supplying the control voltage for the consumer ( 8:31).
Figure 00000001
EP02002848A 2001-02-21 2002-02-08 LED driving circuit in a vehicle Expired - Lifetime EP1235465B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10108132A DE10108132A1 (en) 2001-02-21 2001-02-21 Driver for LED lights in vehicles
DE10108132 2001-02-21

Publications (3)

Publication Number Publication Date
EP1235465A2 EP1235465A2 (en) 2002-08-28
EP1235465A3 true EP1235465A3 (en) 2005-01-12
EP1235465B1 EP1235465B1 (en) 2007-05-23

Family

ID=7674853

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02002848A Expired - Lifetime EP1235465B1 (en) 2001-02-21 2002-02-08 LED driving circuit in a vehicle

Country Status (2)

Country Link
EP (1) EP1235465B1 (en)
DE (2) DE10108132A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10336973B4 (en) * 2003-08-12 2016-12-29 Hella Kgaa Hueck & Co. Method for monitoring a light-emitting diode
US7847486B2 (en) * 2004-08-04 2010-12-07 Dr. LED (Holdings), Inc LED lighting system
JP2007200610A (en) * 2006-01-24 2007-08-09 Koito Mfg Co Ltd Lighting control device of vehicular lamp
DE102007009104B4 (en) 2007-02-24 2011-04-14 Lear Corporation Gmbh Control circuit for clocked driving at least one light emitting diode
AT511094B1 (en) * 2011-03-25 2012-09-15 Thales Austria Gmbh ARRANGEMENT FOR STATE MONITORING OF A LAMP
DE102011050908A1 (en) * 2011-06-08 2012-12-13 Dietmar Müller Light-emitting diode lamp and circuit for controlling a light source
DE102015219901B4 (en) 2015-10-14 2019-09-05 Continental Automotive Gmbh Diagnostic device and method for detecting a defect of at least one of a plurality of light emitting diodes

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19734750A1 (en) * 1997-08-12 1999-02-18 Reitter & Schefenacker Gmbh Rear lights of motor vehicles
EP1000806A2 (en) * 1998-11-13 2000-05-17 Hella KG Hueck & Co. Diagnostic system for vehicle LEDs light

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19846753A1 (en) * 1998-10-07 2000-04-13 Siemens Ag Circuit arrangement for operating a light sign
DE19905709A1 (en) * 1999-02-11 2000-08-31 Siemens Ag Procedure to recognise automobile lamp failure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19734750A1 (en) * 1997-08-12 1999-02-18 Reitter & Schefenacker Gmbh Rear lights of motor vehicles
EP1000806A2 (en) * 1998-11-13 2000-05-17 Hella KG Hueck & Co. Diagnostic system for vehicle LEDs light

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
LACHMANN U ET AL: "LAMPENUBERWACHUNG IM KRAFTFAHRZEUG SPEZIAL-IC VEREINFACHT MONITORSCHALTUNG", ELEKTRONIK, FRANZIS VERLAG GMBH. MUNCHEN, DE, vol. 37, no. 23, 11 November 1988 (1988-11-11), pages 125 - 126,128, XP000098331, ISSN: 0013-5658 *
TIETZE, U.; SCHENK, CH.: "Halbleiterschaltungstechnik", 1991, SPRINGER VERLAG, BERLIN, XP002306012 *

Also Published As

Publication number Publication date
EP1235465A2 (en) 2002-08-28
EP1235465B1 (en) 2007-05-23
DE50210182D1 (en) 2007-07-05
DE10108132A1 (en) 2002-08-29

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