EP1286567B1 - Dispositif d' éclairage - Google Patents

Dispositif d' éclairage Download PDF

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Publication number
EP1286567B1
EP1286567B1 EP02015416A EP02015416A EP1286567B1 EP 1286567 B1 EP1286567 B1 EP 1286567B1 EP 02015416 A EP02015416 A EP 02015416A EP 02015416 A EP02015416 A EP 02015416A EP 1286567 B1 EP1286567 B1 EP 1286567B1
Authority
EP
European Patent Office
Prior art keywords
led
converter
control module
lighting equipment
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.)
Expired - Lifetime
Application number
EP02015416A
Other languages
German (de)
English (en)
Other versions
EP1286567A2 (fr
EP1286567A3 (fr
Inventor
Detlef Niggemann
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 EP1286567A2 publication Critical patent/EP1286567A2/fr
Publication of EP1286567A3 publication Critical patent/EP1286567A3/fr
Application granted granted Critical
Publication of EP1286567B1 publication Critical patent/EP1286567B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • 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

Definitions

  • a lighting device for motor vehicles with a connectable to a vehicle electrical system control device can be connected to the LED arrays and operable Sind.
  • the lighting device has a light control module with a DC-DC converter for converting the vehicle electrical system voltage in a constant LED operating voltage LED control on.
  • switching elements are arranged in the light control module at the output of the DC-DC converter.
  • Another advantage of the invention is that the operating voltage at the output of the DC-DC converter can be adjusted relatively accurately to the operating voltages of the LED arrays used. Compliance with the permissible LED operating currents can therefore already be achieved by means of relatively small series resistors. As a result, the total power loss is minimized and increased accordingly the efficiency of the lighting device.
  • the lights that are traditionally mounted in crash areas of a vehicle can also be provided at low cost and, not least, more cost-effectively.
  • the light control module may further be integrated a current measuring device for measuring the output currents of the DC-DC converter.
  • the current measurement can be done for example by means of shunt resistors and connected in parallel voltmeters.
  • each LED array connected to the DC-DC converter can be assigned such a current-measuring device. This makes it possible to monitor the actual function of each LED array and to cause, for example, an indication that a malfunction has occurred in the event of deviations from a predetermined operating current.
  • the light control module has a DC-DC converter 4 (DC / DC converter), which converts the input-side vehicle electrical system voltage U B into a constant, applied to the output lines 3 LED operating voltage.
  • a switch 5 is incorporated in each of the output lines 3, which is preferably each formed as a semiconductor switch and with which each of the LED assemblies 2 can be put into operation.
  • the switches 5 can be controlled by a control device 6, which contains, for example, a microcontroller.
  • This control device 6 detected by current sensors 7 at the closed switches 5 by the output line 3 current flowing. If this measured current deviates from a predefined nominal current of an LED arrangement, this is rated as a malfunction by the control device. This malfunction may optionally be stored in a fault memory and forwarded via output lines 8 to corresponding display and diagnostic devices.
  • the light control module 1 provides a central electronic supply device for a plurality of LED arrangements 2.
  • a central electronic supply device for a plurality of LED arrangements 2.
  • LED operating voltage in contrast to the known constant current circuits, any number of LED arrays can be controlled simultaneously.
  • a functional diagnosis of the LED arrangements is relatively easy.

Landscapes

  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Claims (7)

  1. Dispositif d'éclairage pour un véhicule, comprenant au moins un dispositif de commande (1) raccordable à un réseau de bord de véhicule, auquel dispositif des ensembles de diodes électroluminescentes (2) peuvent être raccordés pour être utilisés, le dispositif de commande étant conçu sous forme de module de commande d'éclairage (1) avec un convertisseur continu-continu (4) pour convertir la tension du réseau de bord du véhicule en une tension de service de DEL constante permettant de piloter les ensembles de DEL (2), des éléments de commutation (5) étant disposés dans le module de commande d'éclairage (1) à la sortie du convertisseur continu-continu (4),
    caractérisé en ce que
    un dispositif de mesure de courant (7, 6) permettant de mesurer les courants de sortie du convertisseur continu-continu (4) est intégré dans le module de commande d'éclairage (1),
    les éléments de commutation (5) peuvent être pilotés par un dispositif de mesure et de contrôle (6), en particulier par le dispositif de mesure de courant (7, 6) permettant de mesurer les courants de sortie du convertisseur continu-continu (4).
  2. Dispositif d'éclairage selon la revendication 1, caractérisé en ce que la tension de service de DEL pouvant être délivrée par le convertisseur continu-continu (4) est supérieure à la tension de réseau de bord.
  3. Dispositif d'éclairage selon la revendication 1 ou 2, caractérisé en ce que le convertisseur continu-continu (4) est conçu sous forme de convertisseur à commutation.
  4. Dispositif d'éclairage selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le module de commande d'éclairage (1) comprend un régulateur de tension linéaire.
  5. Dispositif d'éclairage selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les éléments de commutation (5) sont conçus sous forme de commutateur semi-conducteurs à commande électronique.
  6. Dispositif d'éclairage selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'une majorité d'ensembles de DEL (2) peuvent être pilotées par le module de commande d'éclairage (1).
  7. Dispositif d'éclairage selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'un ensemble de DEL (2) comprend une ou plusieurs DEL montées en série et/ou en parallèle avec au moins une résistance série (10).
EP02015416A 2001-07-31 2002-07-11 Dispositif d' éclairage Expired - Lifetime EP1286567B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10137338A DE10137338A1 (de) 2001-07-31 2001-07-31 Beleuchtungseinrichtung
DE10137338 2001-07-31

Publications (3)

Publication Number Publication Date
EP1286567A2 EP1286567A2 (fr) 2003-02-26
EP1286567A3 EP1286567A3 (fr) 2005-05-25
EP1286567B1 true EP1286567B1 (fr) 2008-01-02

Family

ID=7693754

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02015416A Expired - Lifetime EP1286567B1 (fr) 2001-07-31 2002-07-11 Dispositif d' éclairage

Country Status (2)

Country Link
EP (1) EP1286567B1 (fr)
DE (2) DE10137338A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7287889B2 (en) * 2003-03-06 2007-10-30 Honda Motor Co., Ltd. Lamp apparatus for vehicle
DE102004046763A1 (de) * 2004-09-24 2006-03-30 Schmitz-Gotha Fahrzeugwerke Gmbh Fahrzeug-Leuchtenanordnung, insbesondere für Anhänger
DE102006005521B3 (de) * 2006-02-07 2007-05-16 Lear Corp Schaltung und Verfahren zum Ansteuern eines LED-Array's
DE102006013300A1 (de) * 2006-03-21 2007-09-27 Kompled Gmbh & Co. Kg Fahrzeugleuchte und Anhänger-Beleuchtungsanordnung mit solchen Fahrzeugleuchten
DE102006039182A1 (de) * 2006-08-21 2008-03-20 Siemens Ag Adaptives Kurvenlicht ohne bewegliche Teile
DE102007009104B4 (de) * 2007-02-24 2011-04-14 Lear Corporation Gmbh Steuerschaltung zum getakteten Ansteuern mindestens einer Leuchtdiode
DE102014007778A1 (de) * 2014-05-21 2015-11-26 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Verfahren und Steuergerät zur Ansteuerung einer mit lichtemittierenden Dioden ausgestatteten Fahrzeugleuchte durch Parallelschaltung
DE102017210197B4 (de) * 2017-06-19 2023-03-30 Volkswagen Aktiengesellschaft Kraftfahrzeug-Verschaltungsvorrichtung zum Verschalten eines Steuergeräts mit Fahrzeugkomponenten sowie Fahrzeugleuchte, Kraftfahrzeug und Betriebsverfahren für die Verschaltungsvorrichtung
DE102017221695A1 (de) 2017-12-01 2019-06-06 Volkswagen Aktiengesellschaft Beleuchtungsanordnung für ein Kraftfahrzeug und Kraftfahrzeug
DE102022119081B4 (de) 2022-07-29 2025-12-18 Infineon Technologies Ag Lichtsteuermodul zum ansteuern von led-modulen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61263175A (ja) * 1985-05-15 1986-11-21 Mitsubishi Electric Corp 発光ダイオ−ド駆動回路
JPH05136461A (ja) * 1991-11-14 1993-06-01 Sharp Corp 光送信器のｌｅｄ駆動回路
DE4341058C1 (de) 1993-12-02 1995-04-27 Daimler Benz Ag Lichtsteuereinrichtung für ein Kraftfahrzeug
JPH08127297A (ja) * 1994-10-31 1996-05-21 Sekisui Chem Co Ltd ブレーキランプ付バンパー
FR2745459B1 (fr) * 1996-02-28 1998-04-10 Valeo Electronique Circuit d'illumination a diodes electroluminescentes, notamment pour vehicules automobiles, feu de signalisation, et tableau de commande, l'incorporant
DE19732828C2 (de) * 1997-07-30 2001-01-18 Siemens Ag Schaltungsanordnung zur Ansteuerung eines Leuchtdioden-Arrays
DE19734750C2 (de) 1997-08-12 2003-04-30 Reitter & Schefenacker Gmbh Heckleuchte von Kraftfahrzeugen
FR2780599B1 (fr) * 1998-06-30 2000-09-15 Magneti Marelli France Circuit electrique d'eclairage d'un dispositif indicateur de vehicule automobile comportant des moyens de commande et d'asservissement

Also Published As

Publication number Publication date
DE50211445D1 (de) 2008-02-14
DE10137338A1 (de) 2003-02-20
EP1286567A2 (fr) 2003-02-26
EP1286567A3 (fr) 2005-05-25

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