EP1755363B1 - Circuit pour alimenter au moins un tube à décharge fluorescent et au moins une DEL - Google Patents

Circuit pour alimenter au moins un tube à décharge fluorescent et au moins une DEL Download PDF

Info

Publication number
EP1755363B1
EP1755363B1 EP06013146A EP06013146A EP1755363B1 EP 1755363 B1 EP1755363 B1 EP 1755363B1 EP 06013146 A EP06013146 A EP 06013146A EP 06013146 A EP06013146 A EP 06013146A EP 1755363 B1 EP1755363 B1 EP 1755363B1
Authority
EP
European Patent Office
Prior art keywords
led
circuit
supply unit
bridge
lamp
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.)
Not-in-force
Application number
EP06013146A
Other languages
German (de)
English (en)
Other versions
EP1755363A1 (fr
Inventor
Olaf Busse
Markus Heckmann
Reinhard Lecheler
Alfons Lechner
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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Filing date
Publication date
Application filed by Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP1755363A1 publication Critical patent/EP1755363A1/fr
Application granted granted Critical
Publication of EP1755363B1 publication Critical patent/EP1755363B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H05B35/00—Electric light sources using a combination of different types of light generation

Definitions

  • the present invention relates to a circuit arrangement for operating at least one electric lamp and at least one LED (Light Emitting Diode), comprising an inverter with a bridge circuit having at least a first and a second series-connected bridge transistor, wherein between the first and the second bridge transistor a center of the bridge circuit is defined, and a lamp supply unit for supplying the electric lamp with energy from the bridge circuit, which comprises a supply line with an inductance, via which the center of the bridge circuit is coupled to a first terminal for the electric lamp.
  • LED Light Emitting Diode
  • the basic problem underlying the present invention is that in order to achieve special optical effects, for example for realizing an emergency light or night light function of a lighting unit or for varying the color temperature, both electric lamps, for example fluorescent lamps, and LEDs are operated in a lighting unit.
  • two ballasts are used in the prior art, namely a ballast for the LEDs and a second for the fluorescent lamps.
  • both ballasts are connected by the manufacturer of such a lighting unit via corresponding lines to the mains connection of the lighting unit.
  • a disadvantage of this known solution is the costs incurred by the manufacturer of such a lighting unit cabling and the costs incurred by the two ballasts in such a lighting unit space.
  • the object of the present invention therefore consists in further developing the circuit arrangement mentioned in the introduction in such a way that a reduction of the cabling effort as well as a reduction of the space requirement of the unit (s) used to drive the electric lamps or the LEDs is made possible.
  • the present invention is based on the recognition that the disadvantages of the prior art can be overcome if the at least one electric lamp and the at least one LED are operated with one and the same ballast. Because this only requires a ballast to be connected to the power supply. On the other hand, such a ballast requires less space than the two ballasts that were necessary in the prior art approach, especially when certain assemblies are used both for the operation of the at least one electric lamp and for the operation of the at least one LED. To realize the night-light function, in which only the at least one LED should be lit, the bridge circuit can be operated at a frequency which is higher than the frequency in normal operation, but in which the ignition condition for the electric lamp is not yet met. An optional preheater for the coils should be deactivated.
  • an ohmic resistance and / or an inductance can be connected in series with the at least one LED.
  • a preferred embodiment is characterized in that the LED supply unit has an input and an output, wherein the input and the output are galvanically isolated from each other in terms of their potentials.
  • the potential separation ensures that no direct current is transferred from the input of the LED supply unit to the output of the LED supply unit. This measure makes it easy to comply with the safety regulations for the operation of LEDs provided for some applications or in various countries.
  • the LED supply unit comprises a transformer, which is coupled to the supply line.
  • this results in an alternating voltage with a constant amplitude on the primary side of the transformer and consequently also on the secondary side of the transformer.
  • the amplitude of the AC voltage can be set on the secondary side.
  • the voltage on the secondary side of the transformer results over the characteristic of at least one LED, a typical current through the LED and thus a certain color temperature.
  • a particularly space-saving realization can be achieved if the inductance in the supply line of the electric lamp represents the primary winding of this transformer.
  • a voltage limiting device in particular a Zener diode, is preferably connected in parallel with the at least one LED.
  • a voltage limiting device in particular a Zener diode, is preferably connected in parallel with the at least one LED.
  • the LED supply unit further comprises a rectifier which is designed to be connected to the output of the LED supply unit, i. H. at the terminal, where the at least one LED is connected to the LED supply unit to provide a rectified signal.
  • a rectifier which is designed to be connected to the output of the LED supply unit, i. H. at the terminal, where the at least one LED is connected to the LED supply unit to provide a rectified signal.
  • a smoothing inductor can be serially inserted in the current path of the LEDs.
  • FIG. 1 shows a schematic representation of a first embodiment of a circuit arrangement according to the invention, wherein for reasons of clarity, only the relevant with regard to the invention components are shown.
  • a first switch S1 realized by a first bridge transistor and a second switch S2 realized by a second bridge transistor
  • U ZW applied which, as is well known, is generated from the mains voltage and usually of the order of 400 V is.
  • a half-bridge circuit is used as the bridge circuit.
  • the invention can also be practiced using a full bridge circuit.
  • the switches S1 and S2 are driven in a known manner for the realization of an inverter.
  • a center M of the bridge circuit is defined.
  • a lamp supply unit 10 which serves to supply an electric lamp LP. It comprises a coupling capacitor C1, an inductance L1 and a resonance capacitor C2.
  • an LED supply unit 12 which is designed to supply the LED with energy.
  • the LED supply unit 12 comprises a transformer Tr with a transmission ratio U whose secondary side is coupled to a rectifier comprising the diodes D1 to D4, wherein the output of the rectifier is coupled to the LED.
  • the inductance L1 in the supply line of the electric lamp LP the primary winding of the transformer Tr.
  • the transformer Tr To implement the transformer Tr while the secondary transformer winding is applied to the inductor L1.
  • a voltage limiting device in this case a Zener diode ZI arranged.

Landscapes

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

Claims (4)

  1. Montage pour faire fonctionner au moins une lampe ( LP ) fluorescente et au moins une DEL comprenant :
    - un onduleur comportant un circuit en pont ayant au moins un premier ( S1 ) et un deuxième ( S2 ) transistors de pont montés en série l'un par rapport à l'autre, un point ( M ) médian du circuit en pont étant défini entre le premier ( S1 ) et le deuxième ( S2 ) transistors du pont,
    - une unité ( 10 ) d'alimentation de lampes pour l'alimentation des lampes ( LP ) électriques en énergie à partir du circuit en pont, unité qui comprend une ligne d'alimentation ayant une inductance ( L1 ) par laquelle le point ( M ) médian du circuit en pont est relié électriquement à une première borne pour les lampes ( LP ) électriques,
    l'unité ( 10 ) d'alimentation de lampes comprenant une unité ( 12 ) d'alimentation de DEL, qui alimente au moins une DEL en énergie,
    caractérisé en ce que
    l'unité ( 12 ) d'alimentation de DEL comprend un transformateur ( Tr ) dont l'enroulement primaire forme l'inductance ( L1 ) dans la ligne d'alimentation des lampes électriques et dont l'enroulement secondaire est couplé à l'un au moins une DEL.
  2. Montage suivant l'une des revendications précédentes,
    caractérisé
    en ce qu'un dispositif de limitation de la tension, notamment une diode ( Z1 ) Zener, est monté en parallèle à la moins une DEL.
  3. Montage suivant l'une des revendications précédentes,
    caractérisé
    en ce qu'une unité ( 12 ) d'alimentation de DEL comprend un redresseur ( D1, D2, D3, D4 ) qui est conçu pour mettre à disposition un signal redressé à la sortie de l'unité d'alimentation de DEL.
  4. Montage suivant l'une des revendications précédentes,
    caractérisé
    en ce qu'une bobine de lissage est montée en série avec la au moins une DEL.
EP06013146A 2005-06-28 2006-06-26 Circuit pour alimenter au moins un tube à décharge fluorescent et au moins une DEL Not-in-force EP1755363B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005030114A DE102005030114A1 (de) 2005-06-28 2005-06-28 Schaltungsanordnung und Verfahren zum Betrieb mindestens einer elektrischen Lampe und mindestens einer LED

Publications (2)

Publication Number Publication Date
EP1755363A1 EP1755363A1 (fr) 2007-02-21
EP1755363B1 true EP1755363B1 (fr) 2008-12-10

Family

ID=37071816

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06013146A Not-in-force EP1755363B1 (fr) 2005-06-28 2006-06-26 Circuit pour alimenter au moins un tube à décharge fluorescent et au moins une DEL

Country Status (6)

Country Link
US (1) US7786683B2 (fr)
EP (1) EP1755363B1 (fr)
CN (1) CN1893754B (fr)
AT (1) ATE417489T1 (fr)
CA (1) CA2550940A1 (fr)
DE (2) DE102005030114A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7633239B2 (en) * 2007-03-12 2009-12-15 Masco Corporation Dimming circuit for controlling electrical power
DE102007043416B4 (de) * 2007-09-12 2009-09-17 P.E.R. Flucht- Und Rettungsleitsysteme Gmbh Notbeleuchtungsverfahren und -system
US8164271B2 (en) * 2008-01-14 2012-04-24 Tai-Her Yang Uni-directional light emitting diode drive circuit in bi-directional power series resonance
US7759880B2 (en) * 2008-02-12 2010-07-20 General Electric Company Combined ballast for fluorescent lamp and light emitting diode and method of driving same
DE102008057007A1 (de) * 2008-11-12 2010-05-20 HÜCO Lightronic GmbH Elektronisches Vorschaltgerät und Leuchtmittelsystem
US7990070B2 (en) * 2009-06-05 2011-08-02 Louis Robert Nerone LED power source and DC-DC converter
EP2362717A3 (fr) * 2010-02-22 2017-01-11 Panasonic Intellectual Property Management Co., Ltd. Dispositif d'éclairage et accessoire d'éclairage correspondant
DE102010011157A1 (de) 2010-03-12 2011-09-15 Vossloh-Schwabe Deutschland Gmbh Betriebsgerät für eine Entladungslampe
DE102010029100A1 (de) * 2010-05-19 2011-11-24 Osram Gesellschaft mit beschränkter Haftung Schaltungsanordnung zum Betreiben mindestens einer Entladungslampe und mindestens einer LED
DE102011005596A1 (de) * 2011-03-16 2012-09-20 Osram Ag Elektronisches Vorschaltgerät zum Betreiben mindestens einer LED und/oder mindestens einer Entladungslampe

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4536695A (en) * 1983-12-12 1985-08-20 Lin Ming Hsin Discharging protection device for battery-operated portable electric light
US5781418A (en) * 1996-12-23 1998-07-14 Philips Electronics North America Corporation Switching scheme for power supply having a voltage-fed inverter
US6429597B1 (en) * 1998-10-15 2002-08-06 Hubbell Incorporated Externally mountable discharge lamp ignition circuit having visual diagnostic indicator
TW437909U (en) * 1998-10-26 2001-05-28 Idea Up Tech Co Ltd Soft start device of lighting
DE19937923A1 (de) * 1999-08-11 2001-02-15 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Vorrichtung zum Betreiben mindestens einer Leuchtdiode
DE10013207B4 (de) * 2000-03-17 2014-03-13 Tridonic Gmbh & Co Kg Ansteuerung von Leuchtdioden (LED's)
DE10134966A1 (de) * 2001-07-23 2003-02-06 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Vorschaltgerät zum Betrieb mindestens einer Niederdruckentladungslampe
US7178971B2 (en) * 2001-12-14 2007-02-20 The University Of Hong Kong High efficiency driver for color light emitting diodes (LED)
AU2004235543B2 (en) * 2003-05-02 2009-03-12 George Alan Limpkin Apparatus for supplying energy to a load and a related system
US7323828B2 (en) * 2005-04-25 2008-01-29 Catalyst Semiconductor, Inc. LED current bias control using a step down regulator
US7196483B2 (en) * 2005-06-16 2007-03-27 Au Optronics Corporation Balanced circuit for multi-LED driver

Also Published As

Publication number Publication date
EP1755363A1 (fr) 2007-02-21
CA2550940A1 (fr) 2006-12-28
DE502006002311D1 (de) 2009-01-22
US7786683B2 (en) 2010-08-31
CN1893754B (zh) 2011-03-09
ATE417489T1 (de) 2008-12-15
DE102005030114A1 (de) 2007-01-18
CN1893754A (zh) 2007-01-10
US20070210719A1 (en) 2007-09-13

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