EP1259099B1 - Amorçeur du type à lueur - Google Patents

Amorçeur du type à lueur Download PDF

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Publication number
EP1259099B1
EP1259099B1 EP02005138A EP02005138A EP1259099B1 EP 1259099 B1 EP1259099 B1 EP 1259099B1 EP 02005138 A EP02005138 A EP 02005138A EP 02005138 A EP02005138 A EP 02005138A EP 1259099 B1 EP1259099 B1 EP 1259099B1
Authority
EP
European Patent Office
Prior art keywords
fluorescent lamp
compact fluorescent
storage phosphor
glow
glow starter
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
EP02005138A
Other languages
German (de)
English (en)
Other versions
EP1259099A3 (fr
EP1259099A2 (fr
Inventor
Kirsten Fuchs
Armin Dr. Konrad
Thomas Dr. Noll
Martin Dr. Zachau
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
Osram 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 GmbH filed Critical Osram GmbH
Publication of EP1259099A2 publication Critical patent/EP1259099A2/fr
Publication of EP1259099A3 publication Critical patent/EP1259099A3/fr
Application granted granted Critical
Publication of EP1259099B1 publication Critical patent/EP1259099B1/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
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/02—Details
    • H05B41/04—Starting switches
    • H05B41/06—Starting switches thermal only
    • H05B41/08—Starting switches thermal only heated by glow discharge

Definitions

  • the invention relates to a method for operating a low-pressure discharge lamp on conventional ballasts ('chokes'), wherein the lamp for igniting the discharge is associated with a glow starter.
  • This glow starter can be arranged in a separate housing outside the lamp in rod-shaped fluorescent lamps (hereinafter referred to as 'glow starter').
  • 'glow starter' rod-shaped fluorescent lamps
  • the glow starter can be accommodated in the housing of the lamp (hereinafter referred to as 'KLL glow starter').
  • the invention further relates to a glow starter, a compact fluorescent lamp equipped with such a glow starter, a lamp equipped with such a compact fluorescent lamp, a glow starter and a lamp with a low-pressure discharge lamp equipped with such a glow starter.
  • a glow starter which conventionally contains a glow starter and an interference suppression capacitor.
  • This glow starter is connected in parallel with the lamp and in series with the lamp electrodes.
  • These known glow starters have two electrodes, of which at least one is made of bimetallic strip. The electrodes are arranged in a glow-filled bulb filled with a filling gas.
  • the prerequisite for the starting process of the lamp is that a certain minimum number of free electrons must be present within the glow starter piston in order to initiate an ionization process and the glow discharge required for heating the electrodes. If the number of free electrons is too low, a delay of ignition of the ignition process (ignition delay) which is unacceptable in practical use, and in the worst case, non-ignition of the glow starter, may occur.
  • glow starters show little or no ignition delay when starting the low-pressure discharge lamp in brightness (daylight or artificial light). The reason for this is that free electrons are generated via the photoelectric effect and / or photoionization of excited atoms of the filling gas by the light falling on the electrodes of the glow starter.
  • the ignition delay is particularly pronounced when the lamp is ignited in darkness, since the gain in the electric field between the electrodes is so low that the few charge carriers produced - in particular electrons - due to loss processes, such as recombination, inelastic collisions with impurities lost and thus the electron avalanche extinguished before it arrives at the anode.
  • KLL glow starters are usually housed together with the parallel-connected RFI capacitor directly in the base of the KLL, the operation is analogous to that of glow starters.
  • the prerequisite for starting the lamp is that there must be a certain minimum number of free electrons within the glow-igniter piston in order to initiate an ionization process and the glow discharge required to heat the electrodes. If the number of free electrons is too low, a delay of ignition of the ignition process (ignition delay) which is unacceptable in practical use, and in the worst case, non-ignition of the glow starter, may occur.
  • glow starters show little or no ignition delay when starting the low-pressure discharge lamp in brightness (daylight or artificial light). The reason for this is that free electrons are generated via the photoelectric effect and / or photoionization of excited atoms of the filling gas by the light falling on the electrodes of the glow starter.
  • the ignition delay is particularly pronounced when the lamp is ignited in darkness, since the gain in the electric field between the electrodes is so low that the few charge carriers generated, in particular Electrons - lost due to loss processes, such as recombination, inelastic collisions with impurities and thus the electron avalanche extinguished before it arrives at the anode.
  • the invention has the object, a method for operating a low-pressure discharge lamp, a glow starter, a equipped with such a glow star compact fluorescent lamp, equipped with such a compact fluorescent lamp, to provide a glow starter and operated with a glow starter lamp, the ignition delay is minimized with minimal device complexity.
  • a glow starter with a storage phosphor which is charged by daylight or artificial light, for example the light of a fluorescent lamp.
  • This storage phosphor also emits light in a suitable spectral range after charging, even in the dark, so that enough free charge carriers are present in the glow starter in order to initiate the ionization process during the starting process. Since this storage phosphor can be easily attached to a suitable position without additional wiring, the cost of production is much lower than in the solution described above.
  • the storage phosphor can be applied to the glow starter bulb, both directly in the form of a coating and indirectly by the application of another precursor which serves as or supports the storage phosphor (eg, applying a transparent plastic film containing the Storage phosphor contains).
  • the storage phosphor in glow starters on Some type of other Glimmstarter components are attached, for example.
  • a surrounding the piston starter sleeve surrounding the glow starter like a box (eg. As admixture with the plastic granules).
  • KLL glow starters it is possible to attach the phosphor in some way to the lamp parts surrounding the glow starter or to the capacitor (for example as an admixture with the plastic of the lamp base).
  • a particularly simple solution in glow starters is to produce the starter sleeve by injection molding of plastic and thereby mix the storage phosphor powder as the granules, so that it is integrated into the starter sleeve.
  • This variant requires the use of transparent base material for the production of the starter sleeve.
  • a particularly simple solution in glow starters is to provide the glow starter with a transparent plastic film containing the storage phosphor as an admixture.
  • the storage phosphor is protected from environmental influences, for example water absorption, by the inclusion in the plastic material and thus prevents aging.
  • the formation of the free charge carriers presupposes that at least one material is present in the region of the electrodes of the glow starter which, on irradiation with the light of the storage phosphor, emits photoelectrons in sufficient quantity to push the photoionization.
  • a coating of lanthanum, cerium or an alloy containing lanthanum and cerium has been found to be particularly well suited.
  • the coating is preferably formed in the region of strong potential gradients, ie in the region of the smallest electrode spacings.
  • the storage phosphor is preferably selected to emit light in the wavelength range between the transmission limit of the glass used for the glow-igniter bulb and the relevant cut-off wavelength for photoemission at the electrodes. This cut-off wavelength depends on the chemical composition of the electrode materials used and the nature of their introduction and their composite.
  • Respective components of the glow starter ( FIG. 1 ) and the KLL glow starter ( FIG. 3 ) are provided with the same numbers for the sake of clarity.
  • the in FIG. 1 shown glow starter 1 has a glow starter 2, which is housed together with a suppression capacitor 3 in a housing consisting of a starter sleeve 4 and a bottom plate 14.
  • the glow starter 2 has a piston 6 made of glass, the interior 7 is evacuated via a pumping stem 8 and filled with a filling gas. This usually contains at least one noble gas.
  • two electrodes 9, 10 are formed, which are positionally positioned relative to each other via a pinch seal 11. At least one of the electrodes 9, 10 is made of bimetallic strip, so that the two electrodes 9, 10 can be brought into contact with one another by the thermal bending of the bimetallic strip.
  • the starter sleeve 4 is made by injection molding of a transparent plastic, wherein the plastic granules, a proportion of storage phosphor 5 is supplied.
  • a storage phosphor 5 is able to store light in daylight or during operation of the glow starter associated with the low-pressure discharge lamp and deliver this in the sequence over a longer period. This process is roughly comparable to the electrical charging of a battery, which then gives its energy to an electrical consumer.
  • the storage phosphor 5 thus acts as an "auxiliary lighting", is delivered via the light to the glow starter 2.
  • the storage phosphor 5 in the sleeve 4 in the injection molding of this example.
  • Such a phosphor glows already after a few minutes of charging by means of a fluorescent lamp in the dark for a few hours slightly purple. After longer periods of time (eg 64h) no light emission is visible to the human eye, but the emitted photons are still sufficient to improve the ignition of the glow discharge in the glow starter.
  • the material of the starter sleeve and the glow starter piston it must be ensured that the emission band of the storage phosphor in the short-wave edge, i. in the region of the cut-off wavelength for photoelectric effect and photoionization is not cut off by interaction with the starter sleeve material or the material of the glow starter piston.
  • a metal plate 15 is welded to an electrode 10 in the region of the minimum electrode spacing.
  • the material of this plate 15 is selected such that upon irradiation with the light of the storage phosphor 5 photoelectrons are generated in sufficient quantity that support the ignition process between the electrodes 9, 10 of the glow starter.
  • the cerium mischmetal should be placed in the range of strong potential gradients, ie preferably in the range of the smallest electrode spacing.
  • the storage phosphor 5 and the metal plate 15 additionally applied in the electrode area are selected so that the electromagnetic radiation emitted by the storage phosphor is at least partially shorter than the cut-off wavelength for photoemission of the metal 15.
  • this radiation must be free of any intervening materials (eg glass of the glow starter bulb 6) are at least partially let through.
  • a suitable storage phosphor 5 has an emission band in the wavelength range from about 390 to 530 nm, while the cut-off wavelengths of the cerium-mixed metal elements cerium and praseodymium are 430 nm and 460 nm, respectively (proportions of these elements in cerium Mischmetal: 48-55% by weight and 4-7% by weight, respectively). Thus, part of the emission spectrum of the storage phosphor 5 is below the cut-off wavelength of cerium.
  • the light emission of the storage phosphor 5 causes free electrons to be generated by the electrode 10 provided with the metal plate 15 by photo-effect, which initiate a Townsend avalanche when a voltage is applied to the glow starter and thus make it possible to ignite the glow starter 1 without significant ignition delay.
  • Radioactivity-free Glimmstarter 1 according to FIG. 1 made, in which the starter sleeves 4 are made of transparent Makrolon containing 3% storage phosphor 5 with the above-mentioned emission band.
  • Identically constructed glow starters were used as comparative samples, but their starter sleeve 4 contains no storage phosphor.
  • an electrode is made of bimetallic strip and the counter electrode is provided with the cerium mischmetal plate.
  • FIG. 2 shows a diagram in which the ignition behavior of the tested glow starters is shown.
  • the curve marked 1 shows the ignition behavior of the radioactive-free glow starter without storage phosphor. Accordingly, these have a significant ignition delay, even after 25 seconds only 25% of the tested Glimmstarter had ignited.
  • Curve 2 shows the ignition behavior of standard glow starters with radioactive additives.
  • Curves 3, 4, 5 show the ignition behavior of the glow starters according to the invention after 4 hours of dark storage (curve 3), 17 hours of dark storage (curve 4) and 64 hours of dark storage (curve 5). Accordingly, the glow starters 1 even after a dark storage of 17 hours still a significantly better ignition than the conventional standard glimmers with radioactive additives. After a dark storage of 64 hours, the ignition delay of the glow starters according to the invention is approximately in the range shown by conventional glow starters. That is, even after a weekend in darkness, the radioactivity-free glow starters do not fire worse than the conventional standard starters.
  • the material of the uncoated electrodes (Fe, Ni, Mn and Cr) have a much higher work function for electrons and a cut-off wavelength, which is at shorter wavelengths than the emission spectrum of the storage phosphor, so that no photoelectric effect to trigger a Electron avalanche is achievable.
  • FIG. 3 shows the schematic representation of a compact fluorescent lamp 16 in a sectional view.
  • the compact fluorescent lamp consists of a discharge vessel 17 with a phosphor layer 18, which is fastened in a base 19, which is usually assembled from two plastic parts, and on which are also contact pins 20 for electrically contacting the pinched in the discharge vessel coil electrodes 21.
  • the base contains an inventive glow starter 2, which is connected in series with the electrodes of the compact fluorescent lamp 16, and a radio interference suppression capacitor 3 connected in parallel with the glow starter 2.
  • the glow starter 2 is provided with a storage phosphor coating 5 on the outside of the glow starter glass bulb 6.
  • One glow plug electrode consists of a bimetallic strip
  • the other electrode consists of a wire of a Ni / Fe / Cr alloy, which is provided with a thin lanthanum coating in the area of the smallest electrode gap.
  • a glow starter 1 causes also in the case of a KLL glow starter 2 emitted by the storage phosphor 5 in the charged state electromagnetic Radiation the emission of photoelectrons at the coated Glimmzünder electrode, whereby the ignition of the glow discharge in the glow starter 2 is facilitated in the dark.
  • the charging of the storage phosphor 5 takes place during operation of the lamp by the emerging at the lower end of the discharge vessel 17 radiation, as well as extraneous light that passes through the glass wall of the discharge vessel into the interior of the lamp cap 19.
  • the cut-off wavelength for photoemission of lanthanum is 375 nm, which is slightly below the short-wave limit of the emission spectrum of the storage phosphor (390 nm).
  • interface effects occur between lanthanum and the base material, shifting the cut-off wavelength to longer wavelengths.
  • lanthanum has the cut-off wavelength 446 nm as a coating on tungsten.
  • the effect of the storage phosphor 5 on the ignition of KLL glow starters is due to this effect.
  • FIG. 4 shows a comparison between the ignition delay of a number of radioactivity-free KLL glowless igniters without storage phosphor (curve 1) and the ignition delay of a number of inventive radioactivity-free KLL glow starters 2 with storage phosphor coating 5 (curves 2, 3).
  • Curve 2 shows the result of a measurement after 18 hours of dark storage
  • curve 3 shows the ignition delay after 64 hours of dark storage. It can be clearly seen that the ignition behavior of the invention KLL-Glimmzünder 2 is significantly improved even after a weekend in darkness compared to that of radioactivity-free KLL Glimmzündern without storage phosphor.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Luminescent Compositions (AREA)

Claims (11)

  1. Lampe ( 16 ) fluorescente compacte ayant un amorceur ( 2 ) à décharge luminescente, qui comporte une ampoule ( 6 ) en verre, qui est remplie d'un gaz de remplissage et dans laquelle sont reçues deux électrodes ( 9, 10 ), dont l'une au moins est fabriquée en un bilame thermique, et comprenant un dispositif de production de photoélectrons pendant l'opération d'amorçage de l'amorceur à décharge luminescente, le dispositif de production de photoélectrons comportant une substance ( 5 ) luminescente d'accumulation pouvant être chargée par la lumière du jour et/ou par de la lumière artificielle, caractérisée en ce qu'une partie de la lampe fluorescente compacte, qui entoure l'amorceur à décharge luminescente, porte la substance ( 5 ) luminescente d'accumulation.
  2. Lampe ( 16 ) fluorescente compacte suivant la revendication 1, caractérisée en ce que, dans l'amorceur ( 2 ) à décharge luminescente, il y a une matière ou une combinaison de matières pour la production de photoélectrons, dont les longueurs d'onde limites sont, pour la production de photoélectrons, au-dessus de parties du spectre d'émission de la substance ( 5 ) luminescente d'accumulation.
  3. Lampe ( 16 ) fluorescente compacte suivant la revendication 2, caractérisée en ce que la substance ( 5 ) luminescente d'accumulation est en longueur d'onde entre la limite de transmission du verre de l'ampoule de l'amorceur ( 2 ) à décharge luminescente et la limite de photoémission de la plus grande longueur d'onde de la matière ou de la combinaison de matières pour la production de photoélectrons.
  4. Lampe ( 16 ) fluorescente compacte suivant la revendication 2, caractérisée en ce que la matière ou la combinaison de matières est une plaquette ( 15 ) en cer-mischmetall, qui est appliquée à une électrode ( 9, 10 ).
  5. Lampe ( 16 ) fluorescente compacte suivant la revendication 2, caractérisée en ce que la matière ou la combinaison de matières est un revêtement de lanthane sur un matériau support propre.
  6. Lampe ( 16 ) fluorescente compacte suivant la revendication 5, caractérisée en ce que le matériau de support du revêtement de lanthane est en un alliage de nickel, de fer et de chrome.
  7. Lampe ( 16 ) fluorescente compacte suivant la revendication 1, caractérisée en ce que la lampe fluorescente compacte a un culot ( 19 ), qui porte la substance ( 5 ) luminescente d'accumulation.
  8. Lampe ( 16 ) fluorescente compacte suivant la revendication 7, caractérisée en ce que la substance ( 5 ) luminescente d'accumulation est ajoutée à la matière plastique du culot de la lampe.
  9. Lampe ( 16 ) fluorescente compacte suivant la revendication 1, caractérisée en ce que la lampe fluorescente compacte a une enceinte ( 19 ) de décharge, qui porte la substance ( 5 ) luminescente d'accumulation.
  10. Lampe ( 16 ) fluorescente compacte suivant la revendication 1, caractérisée en ce que la lampe fluorescente compacte comporte un condensateur ( 3 ) antiparasite, qui porte la substance ( 5 ) luminescente d'accumulation.
  11. Lampe ( 16 ) fluorescente compacte suivant la revendication 1, caractérisée en ce qu'un support supplémentaire de la substance ( 5 ) luminescente d'accumulation est à proximité immédiate de l'amorceur à décharge luminescente.
EP02005138A 2001-05-18 2002-03-07 Amorçeur du type à lueur Expired - Lifetime EP1259099B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10125212 2001-05-18
DE10125212A DE10125212A1 (de) 2001-05-18 2001-05-18 Glimmzünder

Publications (3)

Publication Number Publication Date
EP1259099A2 EP1259099A2 (fr) 2002-11-20
EP1259099A3 EP1259099A3 (fr) 2005-05-11
EP1259099B1 true EP1259099B1 (fr) 2010-06-02

Family

ID=7685917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02005138A Expired - Lifetime EP1259099B1 (fr) 2001-05-18 2002-03-07 Amorçeur du type à lueur

Country Status (4)

Country Link
EP (1) EP1259099B1 (fr)
JP (1) JP2002358932A (fr)
DE (2) DE10125212A1 (fr)
HU (1) HU224295B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5207639B2 (ja) * 2007-03-01 2013-06-12 パナソニック株式会社 点灯管及びその製造方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3080318B2 (ja) * 1990-07-12 2000-08-28 東芝ライテック株式会社 けい光ランプおよびこれを用いた照明装置ならびに液晶表示装置
JPH10255724A (ja) * 1997-03-06 1998-09-25 Nemoto Tokushu Kagaku Kk グロースターター

Also Published As

Publication number Publication date
DE50214461D1 (de) 2010-07-15
EP1259099A3 (fr) 2005-05-11
JP2002358932A (ja) 2002-12-13
DE10125212A1 (de) 2002-11-21
EP1259099A2 (fr) 2002-11-20
HUP0201677A2 (hu) 2003-02-28
HUP0201677A3 (en) 2003-10-28
HU224295B1 (hu) 2005-07-28
HU0201677D0 (fr) 2002-07-29

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