EP2277362B1 - Procédé de fonctionnement d'une lampe à décharge et système d'éclairage comprenant une lampe à décharge - Google Patents

Procédé de fonctionnement d'une lampe à décharge et système d'éclairage comprenant une lampe à décharge Download PDF

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Publication number
EP2277362B1
EP2277362B1 EP09737934.1A EP09737934A EP2277362B1 EP 2277362 B1 EP2277362 B1 EP 2277362B1 EP 09737934 A EP09737934 A EP 09737934A EP 2277362 B1 EP2277362 B1 EP 2277362B1
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EP
European Patent Office
Prior art keywords
current
discharge lamp
electrode
discharge
power supply
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Not-in-force
Application number
EP09737934.1A
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German (de)
English (en)
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EP2277362A1 (fr
Inventor
Kirsten Fuchs
Achim Hilscher
Thomas Noll
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Osram GmbH
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Osram GmbH
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    • 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
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps

Definitions

  • the invention relates to a method for operating a discharge lamp, in which, during operation of the discharge lamp, the electrodes of the discharge lamp are at least temporarily supplied with an electrical heating current and an electrical discharge current. Furthermore, the invention relates to a lighting system with a discharge lamp and an operating device for the discharge lamp, by means of which the electrodes of the discharge lamp during operation of the discharge lamp at least temporarily an electric heating current and an electric discharge current can be fed.
  • Discharge lamps are known in various design and use. During operation of a discharge lamp, a large number of physical effects take place, as a result of which the light generation of the discharge lamp is generated. In this context, an interaction of the discharge of the filling gas located in the discharge vessel with the lamp electrodes also occurs. These physical effects also have a greater or lesser influence on the life of the discharge lamp or of subcomponents thereof.
  • At least one electrode of this discharge lamp is at least temporarily supplied with an electrical heating current and an electrical discharge current.
  • An essential idea of the invention is that, in rated operation of the discharge lamp, the value of the sum of the squares of the electric currents supplied via the power supply leads connected to the electrode during operation of the discharge lamp in an interval between 1.2 times the square of the value of a given for the discharge lamp Test current and is set twice the square of the value of this electrical test current.
  • a mode of operation can be achieved in a very specific operating phase, namely in rated operation or undimmed operation (usually nominal current) of the discharge lamp, which leads to a substantial extension of the Lifespan of the discharge lamp leads.
  • the electric currents supplied via the current leads of an electrode are set at an interval between 1.3 times the square of an electric test current given to the discharge lamp and 1.8 times the square of this test current. It is particularly preferred if the electrical currents supplied via the power supply to the electrode are set in an interval between 1.35 times the square of an electric test current predetermined for the discharge lamp and 1.5 times the square of this test current. This is a particularly preferred value interval, on the one hand, the lamp life can be significantly increased and on the other hand, the system efficiency is very large, since only a relatively low supplied power requirement for the electrode heating is required.
  • the lamp life can thus be increased by suitably adapted electronic operating parameters, the electric currents, in particular the heating currents and the discharge currents, and this can be achieved in nominal operation.
  • the electrode is supplied via a first power supply to the second portion of the discharge current supplied via a second power supply, different in value from the first portion of the discharge current.
  • asymmetrical supply of the discharge current to the electrode is thus preferably carried out, whereby a considerably positive influence on the extension of the lamp life on the one hand and the system efficiency with regard to an additionally required energy supply are achieved.
  • the discharge current is supplied to the electrode at least 90% via a power supply, in particular supplied completely to the electrode via only one of the power supply lines.
  • both the heating current and the discharge current are each supplied completely via a same power supply. This is a particularly effective way of improving the operation in terms of extending lamp life and minimizing further energy input.
  • the electrical test current is lamp specific so as to heat the electrode to a value of the hot-to-cold resistance ratio of 4.75, which is a default of an ICE standard.
  • the test current is a current value specifically set for a lamp, which makes it easier to set the value of the sum of the squares of the electric currents between the interval of 1.3 and 2, preferably 1.3 and 1.5, even more simply from this basic parameter 1.35 and 1.5 of the square of the test current can be made in a simple and low-cost manner.
  • the nominal operation of the discharge lamp is characterized in particular by a range of the discharge current in that this discharge current is greater than or equal to 80% of the test current of the discharge lamp, whereby this too is a specification of an ICE standard.
  • a specific setting of the heating current and the discharge current in order to achieve an extension of the lamp life due to the then occurring physical effects can be provided.
  • the heating current is supplied continuously during operation of the discharge lamp of the electrode.
  • a continuous electrode heating or filament heating a particularly positive effect on the extension of the lamp life can be achieved.
  • an electrical current supplied via a power supply to the electrode has a heating current and / or a discharge current.
  • an electrode is connected to two power supply lines, via which the energy, in particular the electrical current is supplied to the electrode.
  • the value of the sum of the supplied electrical currents thus forms from a sum which is formed on the one hand by the currents which are supplied via the first power supply, and on the other hand by the currents which are supplied via the second power supply to the electrode.
  • the electrical current supplied via the first power supply can have a portion of the heating current and a portion of the discharge current.
  • this electric current via the first power supply comprises the complete heating current and the complete discharge current. In such a design, then the current conducted via the second power supply is equal to the heating current.
  • the electric current which is supplied via the first power supply only a proportion of less than 100% of the discharge current to the electrode, in which case the electric current which is supplied via the second power supply to the electrode, respectively missing proportion to 100% plus the heating current to this electrode supplies.
  • a range for the preferably continuous Wendelzuogenicstrom in electronic operation a discharge lamp is thus called, which allows to extend the life of the discharge lamp significantly.
  • the current is thereby expressed by the so-called SoS (Sum of Squares) value, which represents the value of the sum of the squares of the electrical currents supplied via the power supply connected to the electrode.
  • SoS Sud of Squares
  • the SoS range can be optimized Lamp lives are generally indicated for each discharge lamp at which this current value is known.
  • This current value is commonly called test current I T and is listed in the data sheets for many discharge lamps in IEC 60081 and IEC 60901.
  • the lamp life can be increased up to a factor of 2, without having to make changes to the lamp design.
  • the estimated power dissipation of the lighting system comprising a discharge lamp and discharge lamp required for the additional heating of the electrode is less than one watt.
  • the SoS value for the first filament of the discharge lamp is different from the SoS value of the second filament of the discharge lamp. This ensures that defines an electrode or a lamp filament of the discharge lamp defines the lamp life, whereby a steeper failure curve can be achieved.
  • the value of the sum of the squares of the electric currents supplied via current leads connected to a first electrode of the discharge lamp is at least partially different from the value of the sum of the squares of the electric currents supplied via current leads connected to a second electrode of the discharge lamp.
  • the ratio between lamp life extension and system efficiency can be improved because this asymmetric design of the filament heater can increase the slope of the dropout curve.
  • An illumination system comprises at least one discharge lamp and at least one operating device for operating the discharge lamp, wherein at least one time by means of the operating device of at least one electrode during operation of this discharge lamp Heating current and an electric discharge current can be fed.
  • An essential idea of the invention is that, in rated operation of the discharge lamp, the value of the sum of the squares of the electrical currents supplied via current leads connected to an electrode is between 1.3 times the square of the value of an electric test current given to the discharge lamp and times the square of the value of this test current is adjustable. The lamp life can thereby be increased significantly, in addition, in this regard, the system efficiency can still be maintained high.
  • Fig. 1 is shown in a simplified schematic representation of a lighting system I, which has at least one discharge lamp 1, which is formed in the embodiment as a compact fluorescent lamp.
  • the discharge lamp 1 comprises a discharge vessel 2, which in the exemplary embodiment has curved subregions which are tubular.
  • the lighting system I comprises an operating device 3 for operating the discharge lamp 1, wherein the operating device 3 may be formed separately from the discharge lamp 1, but may also be integrated in a housing, not shown, of the discharge lamp 1. In this case then also the discharge vessel 2 extends with its ends 4 and 5 inside.
  • the discharge lamp 1 comprises electrodes formed as lamp filaments 6 and 7, wherein the first electrode 6 is arranged in the region of the one end 4 of the discharge vessel 2 and extends into the interior space or into the discharge space of the discharge vessel 2.
  • the second lamp filament 7 is also gas-tightly sealed in the region of the further end 5 of the discharge vessel 2 and extends into the discharge space of the discharge vessel 2.
  • the first lamp filament 6 is connected to two power supply lines 8 and 9, which in turn are connected to the operating device 3 for supplying energy to the lamp filament 6.
  • the second lamp filament 7 is connected to power supply lines 10 and 11, which also with the operating device 3 are electrically connected to the energy supply to the lamp filament 7.
  • the illumination system I is designed in such a way that, during operation of the discharge lamp 1, the electrodes 6 and 7 can be supplied at least temporarily with an electrical heating current I H and an electrical discharge current I d .
  • the discharge lamp 1 is also characterized in its specific design in that it has a fixed or standardized test current I T , or is characterized by this.
  • the discharge lamp 1 and also the lighting system I is specified to have an associated nominal electrical discharge current, whereby the nominal operation can be characterized.
  • the rated electrical current I d, rated is given for the specific discharge lamp 1 and the specific illumination system I.
  • the value of the sum of the squares of the electric currents supplied via the first electrode 6 to 8 and 9 is at an interval between 1.3 times the square in one for the discharge lamp 1 Test current value I T and twice the square of this test current I T adjustable.
  • the SoS1 value thus denotes the electrical currents supplied via the power supply lines 8 and 9 to the first electrode 6.
  • the electrical current I 11 relates to the electric current supplied via the power supply 8, which can be composed of the discharge current I 11d supplied to this power supply 8 and the heating current I 11H supplied via this power supply 8.
  • the electric current I 12 denotes the current which can be supplied to the first electrode 6 via the second power supply 9, which can likewise be composed of the discharge current I 12d supplied via the power supply 9 and the heating current I 12H supplied via this power supply 9.
  • an asymmetrical supply of the electrical currents to the first electrode 6 takes place, which means that different portions of the discharge current are supplied to the electrode 6 via the power supply lines 8 and 9. It is preferably provided that the complete discharge current I d is supplied via one of the two power supply lines 8 or 9.
  • a value SoS2 which denotes the value of the sum of the squares of the electric currents I 21 and I 22 supplied via the power supply lines 10 and 11 connected to the second electrode 7, the electric current I 21 denoting the power supply 10 can be supplied and the electric current I 22 denotes a feedable via the power supply 11 electrical current.
  • the deliverable via the power supply 10 electric current I 21 is in turn optionally of a portion of the discharge current I 21d and, optionally, a proportion of the heating current I 21H together.
  • the electric current I 22 which can be supplied via the power supply 11 is composed of a portion of the discharge current I 22d and optionally a portion of the heating current I 22H .
  • the power supply to the second electrode 7 are performed in an asymmetrical design, which means that preferably the complete discharge current via one of the two power supply lines 10 or 11 to the second electrode 7 is supplied.
  • the discharge currents and heating currents supplied via at least one power supply line 8 and / or 9 are preferably different from the discharge currents and heating currents supplied to at least one power supply line 10 and / or 11 to the second electrode 7.
  • the steepness of the failure curve can be increased and thus the lamp life can be extended again.
  • the values of the sum of the squares of the electric currents supplied via current leads 8, 9 and 10, 11 connected to an electrode 6 and 7, respectively, are in an interval between 1.35 times the square of the test current I T and 1 predetermined for the discharge lamp 1 , 5 times the square of the test current I T.
  • Fig. 2 a diagram is shown in which the lamp life is given as a function of the normalized SoS value. It can be clearly recognized that in the specific value range between 1.2 and 2, in particular between 1.3 and 1.8, in particular between 1.35 and 1.5, a considerable extension of the lamp life can be achieved.
  • Fig. 3 a diagram is shown in which the SoS value is shown as a function of the rated discharge current I d, rated .
  • I T rated discharge current
  • the invention relates to the range greater than 80% of I T , in which then the SoS value preferably between 1.35 times I T 2 and 1.5 times I T 2 is set.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Claims (9)

  1. Procédé de fonctionnement d'une lampe à décharge (1), selon lequel un courant de chauffage électrique (IH) et un courant de décharge électrique (Id) sont amenés, au moins par intermittence, à une électrode (6, 7) pendant le fonctionnement de la lampe à décharge (1), caractérisé en ce que :
    pendant le fonctionnement sans variation de lumière de la lampe à décharge (1), la valeur (SoS1, SoS2) de la somme des carrés des courants électriques (I1, I2) amenés via des amenées de courant (8, 9, 10, 11) reliées à une électrode (6, 7) est réglée dans un intervalle compris entre 1,2 fois le carré d'un courant de test (IT) prédéterminé pour la lampe à décharge (1) et 2 fois le carré de ce courant de test (IT),
    le courant de test électrique étant prédéterminé spécifiquement pour la lampe de manière telle qu'il chauffe l'électrode à une valeur du rapport de résistance chaud/froid de 4,75.
  2. Procédé selon la revendication 1, caractérisé en ce que les courants électriques (I1, I2) amenés à une électrode (6, 7) via les amenées de courant (8 à 11) sont réglés dans un intervalle compris entre 1,3 fois le carré du courant de test (IT) prédéterminé pour la lampe à décharge (1) et 1,8 fois le carré du courant de test (I2).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que les courants électriques (I1, I2) amenés à l'électrode (6, 7) via les amenées de courant (8 à 11) sont réglés dans un intervalle compris entre 1,35 fois le carré du courant de test (IT) prédéterminé pour la lampe à décharge (1) et 1,5 fois le carré du courant de test (IT).
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'est amenée à l'électrode (6, 7), via une première amenée de courant associée (8 à 11), une première partie du courant de décharge (Id) qui est différente, en valeur, de la deuxième partie du courant de décharge (Id) qui est amenée via une deuxième amenée de courant associée (8 à 11).
  5. Procédé selon la revendication 4, caractérisé en ce que le courant de décharge (Id) est amené à une électrode associée (6, 7) au moins à hauteur de 90 % via une amenée de courant (8 à 11), et est plus particulièrement amené entièrement via uniquement une amenée de courant (8 à 11) associée à l'électrode.
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que, en fonctionnement nominal de la lampe à décharge (1), la valeur (SoS1, SoS2) de la somme des carrés des courants électriques (I11, I12) amenés via des amenées de courant (8 à 11) reliées à une première électrode (6, 7) de la lampe à décharge (1) est réglée au moins par intermittence différemment de la valeur (SoS1, SoS2) de la somme des carrés des courants électriques (I21, I22) amenés via des amenées de courant (8 à 11) reliées à une deuxième électrode (6, 7) de la lampe à décharge (1).
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que le courant de chauffage (IH) est amené en continu à l'électrode (6, 7) pendant le fonctionnement de la lampe à décharge (1).
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'un courant électrique (I1, I2) amené à l'électrode (6, 7) via une amenée de courant (8 à 11) comporte un courant de chauffage (IH) et/ou un courant de décharge (Id).
  9. Système d'éclairage comportant une lampe à décharge (1) et un appareil (3) pour la lampe à décharge (1) au moyen duquel un courant de chauffage électrique (IH) et un courant de décharge électrique (Id) peuvent être amenés, au moins par intermittence, à une électrode (6, 7) de la lampe à décharge (1) pendant le fonctionnement, caractérisé en ce que :
    pendant le fonctionnement sans variation de lumière de la lampe à décharge (1), la valeur (SoS1, SoS2) de la somme des carrés des courants électriques (I1, I2) amenés via des amenées de courant (8 à 11) reliées à une électrode (6, 7) est réglable dans un intervalle compris entre 1,2 fois le carré d'un courant de test (IT) prédéterminé pour la lampe à décharge (1) et 2 fois le carré de ce courant de test (IT),
    le courant de test électrique étant prédéterminé spécifiquement pour la lampe de manière telle qu'il chauffe l'électrode à une valeur du rapport de résistance chaud/froid de 4,75.
EP09737934.1A 2008-04-29 2009-03-12 Procédé de fonctionnement d'une lampe à décharge et système d'éclairage comprenant une lampe à décharge Not-in-force EP2277362B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008021351A DE102008021351A1 (de) 2008-04-29 2008-04-29 Verfahren zum Betreiben einer Entladungslampe sowie Beleuchtungssystem mit einer Entladungslampe
PCT/EP2009/052949 WO2009132890A1 (fr) 2008-04-29 2009-03-12 Procédé de fonctionnement d'une lampe à décharge et système d'éclairage comprenant une lampe à décharge

Publications (2)

Publication Number Publication Date
EP2277362A1 EP2277362A1 (fr) 2011-01-26
EP2277362B1 true EP2277362B1 (fr) 2013-12-25

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Application Number Title Priority Date Filing Date
EP09737934.1A Not-in-force EP2277362B1 (fr) 2008-04-29 2009-03-12 Procédé de fonctionnement d'une lampe à décharge et système d'éclairage comprenant une lampe à décharge

Country Status (7)

Country Link
US (1) US20110037408A1 (fr)
EP (1) EP2277362B1 (fr)
JP (1) JP2011519140A (fr)
KR (1) KR20110013432A (fr)
CN (1) CN102017810B (fr)
DE (1) DE102008021351A1 (fr)
WO (1) WO2009132890A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4503362A (en) * 1983-06-01 1985-03-05 Intent Patent A.G. Frequency stabilized, gain controlled ballast system
DE19923945A1 (de) * 1999-05-25 2000-12-28 Tridonic Bauelemente Elektronisches Vorschaltgerät für mindestens eine Niederdruck-Entladungslampe
DE102005049583A1 (de) * 2005-10-17 2007-04-19 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Elektronisches Vorschaltgerät und Verfahren zum Betreiben einer elektrischen Lampe
CN101395971A (zh) * 2006-02-28 2009-03-25 皇家飞利浦电子股份有限公司 用于驱动放电灯的方法和设备
JP2007294282A (ja) * 2006-04-26 2007-11-08 Toshiba Lighting & Technology Corp 放電灯点灯装置および照明装置

Also Published As

Publication number Publication date
CN102017810B (zh) 2013-12-04
KR20110013432A (ko) 2011-02-09
US20110037408A1 (en) 2011-02-17
EP2277362A1 (fr) 2011-01-26
DE102008021351A1 (de) 2009-11-05
WO2009132890A1 (fr) 2009-11-05
JP2011519140A (ja) 2011-06-30
CN102017810A (zh) 2011-04-13

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