EP1187174A2 - Lampe à décharge dans un gaz à basse pression avec un remplissage gazeux contenant de l'indium - Google Patents

Lampe à décharge dans un gaz à basse pression avec un remplissage gazeux contenant de l'indium Download PDF

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Publication number
EP1187174A2
EP1187174A2 EP01000430A EP01000430A EP1187174A2 EP 1187174 A2 EP1187174 A2 EP 1187174A2 EP 01000430 A EP01000430 A EP 01000430A EP 01000430 A EP01000430 A EP 01000430A EP 1187174 A2 EP1187174 A2 EP 1187174A2
Authority
EP
European Patent Office
Prior art keywords
gas
gas discharge
low
indium
discharge 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.)
Withdrawn
Application number
EP01000430A
Other languages
German (de)
English (en)
Other versions
EP1187174A3 (fr
Inventor
Robert Dr c/o Philips C.I.P.GmbH Scholl
Rainer Dr c/o Philips C.I.P.GmbH Hilbig
Achim c/o Philips C.I.P.GmbH Körber
Johannes Dr c/o Philips C.I.P.GmbH Baier
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.)
Philips Intellectual Property and Standards GmbH
Koninklijke Philips NV
Original Assignee
Philips Intellectual Property and Standards GmbH
Philips Corporate Intellectual Property GmbH
Koninklijke Philips Electronics NV
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 Philips Intellectual Property and Standards GmbH, Philips Corporate Intellectual Property GmbH, Koninklijke Philips Electronics NV filed Critical Philips Intellectual Property and Standards GmbH
Publication of EP1187174A2 publication Critical patent/EP1187174A2/fr
Publication of EP1187174A3 publication Critical patent/EP1187174A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/125—Selection of substances for gas fillings; Specified operating pressure or temperature having an halogenide as principal component
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
    • H01J65/04—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
    • H01J65/042—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field
    • H01J65/048—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field the field being produced by using an excitation coil

Definitions

  • the invention relates to a low-pressure gas discharge lamp which has a gas discharge vessel, which contains a gas filling, with electrodes and with means for production and maintaining a low pressure gas discharge.
  • the generation of light in low-pressure gas discharge lamps is based on the fact that charge carriers, especially electrons, but also ions, through an electric field between the Electrodes of the lamp are accelerated so much that they are in the gas filling of the lamp stimulate them by collisions with the gas atoms or molecules of the gas filling or ionize.
  • charge carriers especially electrons, but also ions
  • Conventional low-pressure gas discharge lamps contain mercury in the gas filling and also have a fluorescent coating on the inside of the gas discharge vessel. It is a disadvantage of mercury low pressure gas discharge lamps that mercury vapor primarily radiation in the high-energy but invisible UV-C range of emits electromagnetic spectrum, which is only in the visible much lower energy radiation must be converted. The The energy difference is converted into unwanted heat radiation.
  • the mercury in the gas filling is also reinforced as environmentally harmful and viewed as a toxic substance in modern mass products due to environmental hazards when using. Production and disposal should be avoided if possible should.
  • a low-pressure gas discharge lamp is known from GB 2 014 358 A.
  • a discharge vessel, electrodes and a filling comprising at least one copper halide contains as LTV emitter.
  • This low-pressure gas discharge lamp containing copper halide emits in the visible range as well as in the UV range at 324.75 and 327.4 nm
  • a low-pressure gas discharge lamp equipped with a gas discharge vessel, which is a gas filling with an indium compound and contains a buffer gas, with electrodes and with means for generating and Maintenance of a low pressure gas discharge.
  • a molecular gas discharge at low pressure takes place in the lamp according to the invention instead, the radiation in the visible and near UVA range of the electromagnetic spectrum emits.
  • the radiation contains in addition to the characteristic lines of the indium 410 and 451 nm also have a wide continuum in the range of 320 to 450 nm. Because it is the radiation of a molar discharge is the exact location of the continuum due to the type of indium compound, any other additives and lamp pressure and operating temperature controllable.
  • the lamp according to the invention has a visual efficiency that is considerably higher than that of conventional low-pressure mercury discharge lamps.
  • the visual efficiency expressed in lumens / watt, is the ratio between the Brightness of the radiation in a certain visible wavelength range and Generation energy for the radiation.
  • the high visual efficiency of the invention Lamp means that a certain amount of light is realized through less power consumption becomes.
  • the lamp according to the invention is advantageously used as a UV-A lamp for Sunbeds, disinfection lights and paint curing lights.
  • the lamp is combined with appropriate phosphors. Because the Losses due to Stoke's displacement are small, you get visible light with a high luminous efficacy of more than 100 lumens / watt.
  • the indium compound is selected from the group of halides, oxides, chalcogenides, hydroxides, Hydrides and the organometallic compounds of indium.
  • Gas filling with indium halides is particularly preferred.
  • a further improved efficiency is achieved when the gas filling is a mixture of two Contains indium halides.
  • the gas filling be a compound as a further additive thallium, selected from the group of halides, oxides, chalcogenides, hydroxides, Hydride and the organometallic compounds of thallium, contains. you receives a gas discharge with a wide continuous spectrum.
  • the gas filling can advantageously also be a halide selected from contain the halides of copper and alkali metals.
  • the gas filling as a buffer gas can be an inert gas, selected from the group consisting of helium, neon, argon, krypton and xenon.
  • the gas pressure of the noble gas at operating temperature is advantageously 2 to 10 mbar, in particular 3.4 mbar.
  • the gas discharge vessel has a phosphor coating on the outer surface.
  • the UVA radiation which is emitted by the low-pressure gas discharge lamp according to the invention, is not absorbed by the common types of glass, but passes through the walls of the discharge vessel almost without loss.
  • the fluorescent coating can therefore be applied to the outside of the gas discharge vessel. This simplifies the manufacturing process.
  • the gas filling Indium halide with a partial pressure of 1.0 to 30.0 ⁇ bar, thallium halide with a partial pressure of ⁇ 1.0 ⁇ bar and argon with a partial pressure of 2 to 10 mbar contains.
  • the pressure specifications are based on the respective operating temperature.
  • FIG. 1 schematically shows the light generation in a low-pressure gas discharge lamp a gas filling containing an indium (I) compound.
  • the low-pressure gas discharge lamp according to the invention from a tubular lamp bulb 1, which has a discharge space surrounds. At both ends of the tube electrodes 2 are melted inside, via which the Gas discharge can be ignited.
  • the low pressure gas discharge lamp has the Version and the base 3. In the version or in the base is known in itself Way integrated an electrical ballast that ignites and operates the gas discharge lamp regulates. In a further embodiment, not shown in FIG. 1 the low-pressure gas discharge lamp can also be operated via an external ballast and be regulated.
  • the gas discharge vessel can also be used as a multiple folded or coiled tube executed and surrounded by an outer bulb.
  • the wall of the gas discharge vessel preferably consists of a type of glass that is suitable for UVA radiation with a wavelength between 320 and 450 nm is transparent.
  • the gas filling consists of an indium halide in an amount of 1 to 10 ⁇ g / cm 3 and an inert gas.
  • the noble gas serves as a buffer gas and facilitates the ignition of the gas discharge.
  • the preferred buffer gas is argon.
  • Argon can be replaced in whole or in part by another noble gas, such as helium, neon, krypton or xenon.
  • the lumen efficiency can be significantly improved become.
  • Another way to increase efficiency is to use two or two to combine more indium halides in the gas atmosphere
  • the cold filling pressure of the buffer gas is a maximum of 10 mbar. Is preferred a range between 1.0 and 2.5 mbar.
  • the operating temperature of the lamp has checked the operating temperature of the lamp by appropriate proven constructive measures.
  • the diameter and length of the lamp are chosen so that an internal temperature during operation at an outside temperature of 25 ° C from 170 to 285 ° C is reached.
  • This internal temperature refers to the coldest point of the gas discharge vessel, as a temperature gradient is caused by the discharge arises in the vessel.
  • the gas discharge vessel can also be used with IR radiation reflective layer can be coated.
  • Infrared radiation is preferred reflective coating made of indium-doped tin oxide.
  • the temperature is the coldest point should be at 220 to 285 ° C, preferably at 255 ° C.
  • a suitable material for the electrodes in the low-pressure gas discharge lamp according to the invention consists for example of nickel or a nickel alloy or a refractory metal, especially tungsten and tungsten alloys. Also Composite materials made of tungsten with thorium oxide or indium oxide are suitable.
  • the gas discharge vessel of the lamp is on it Outside surface coated with a phosphor layer 4.
  • the emitted UV radiation the gas discharge stimulates the phosphors in the phosphor layer to emit light in the visible area 5.
  • the chemical composition of the phosphor layer determines the spectrum of the Light or its color.
  • the materials that can be used as phosphors must be absorb the generated radiation and in a suitable wavelength range z. B. for the three primary colors red, blue and green emit and a high fluorescence quantum yield to reach.
  • Suitable luminescent materials and luminescent material combinations do not have to be on the inside of the gas discharge vessel can be applied, but can also be on the outside be applied because the radiation generated in the UVA range from the usual Glass types are not absorbed.
  • the lamp is a capacitive with a high frequency field excited lamp, in which the electrodes on the outside of the gas discharge vessel are attached.
  • the lamp is an inductive one with a high-frequency field excited lamp.
  • the electrons emitted by the electrodes excite the Atoms and molecules of the gas filling to emit UV radiation from the characteristic radiation and a continuum between 320 to 450 nm.
  • the discharge heats the gas filling so that the desired vapor pressure and the desired one Operating temperature of 170 to 285 ° C is reached, at which the luminous efficacy is optimal.
  • the radiation generated during operation of the gas filling containing indium halide mostly coexists the line spectrum of the elemental indium at 410 nm and 451 nm an intense, broad, continuous molecular spectrum between 340 and 420 nm molecular discharge of the indium halide is caused.
  • the area of maximum Emission of the continuous molecular spectrum shifts to longer wavelengths with increasing molecular weight of the indium halide
  • a cylindrical discharge vessel made of a glass that is transparent to UVA radiation, with a length of 15 cm and a diameter of 2.5 cm with internal electrodes made of tungsten.
  • the discharge vessel will be evacuated and at the same time 0.3 mg indium bromide metered in.
  • argon becomes cold with a pressure of 1.7 mbar filled.
  • AC power is supplied from an external AC power source and measured the lumen efficiency at an operating temperature of 225 ° C. The lumen efficiency is 100 Lm / W.
  • a cylindrical discharge vessel made of a glass that is transparent to UVA radiation, with a length of 15 cm and a diameter of 2.5 cm is with external electrodes made of copper.
  • the discharge vessel will be evacuated and at the same time dosed for the gas filling indium bromide, indium iodide and argon, so that at operating temperature a partial pressure of 5.0 to 15.0 ⁇ bar for indium bromide, 0.5 to 1.5 ⁇ bar for Indium iodide and 5.0 mbar for argon is reached.
  • a cylindrical discharge vessel made of a glass that is transparent to UVA radiation, with a length of 15 cm and a diameter of 2.5 cm with internal electrodes made of tungsten.
  • the discharge vessel is evacuated and at the same time for the Gas filling indium bromide, thallium iodide and argon metered in so that at operating temperature a partial pressure of 1.0 to 10.0 ⁇ bar for indium bromide, ⁇ 1 ⁇ bar for thallium iodide and 5.0 mbar for argon is reached.
  • An AC power is supplied from an external AC power source and the lumen efficiency of 90 Im / W was measured at an operating temperature of 210 ⁇ 10 ° C.

Landscapes

  • Discharge Lamp (AREA)
EP01000430A 2000-09-08 2001-09-06 Lampe à décharge dans un gaz à basse pression avec un remplissage gazeux contenant de l'indium Withdrawn EP1187174A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10044562A DE10044562A1 (de) 2000-09-08 2000-09-08 Niederdruckgasentladungslampe mit quecksilberfreier Gasfüllung
DE10044562 2000-09-08

Publications (2)

Publication Number Publication Date
EP1187174A2 true EP1187174A2 (fr) 2002-03-13
EP1187174A3 EP1187174A3 (fr) 2006-03-29

Family

ID=7655583

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01000430A Withdrawn EP1187174A3 (fr) 2000-09-08 2001-09-06 Lampe à décharge dans un gaz à basse pression avec un remplissage gazeux contenant de l'indium

Country Status (5)

Country Link
US (1) US6972521B2 (fr)
EP (1) EP1187174A3 (fr)
JP (1) JP2002124211A (fr)
CN (1) CN1342994A (fr)
DE (1) DE10044562A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002103748A1 (fr) * 2001-06-19 2002-12-27 Koninklijke Philips Electronics N.V. Lampe a decharge de gaz a basse pression contenant une atmosphere gazeuse sans mercure
WO2004011846A1 (fr) 2002-07-25 2004-02-05 Philips Intellectual Property & Standards Gmbh Systeme de lampe avec lampe a decharge gazeuse vert-bleu et del jaune-rouge
WO2005045881A1 (fr) * 2003-11-11 2005-05-19 Koninklijke Philips Electronics N.V. Lampe a decharge de vapeur a basse pression et a gaz de remplissage exempt de mercure
WO2006043204A2 (fr) * 2004-10-19 2006-04-27 Koninklijke Philips Electronics N.V. Lampe de bronzage a lumiere blanche a indice de rendu des couleurs eleve
WO2007085972A1 (fr) * 2006-01-24 2007-08-02 Koninklijke Philips Electronics N.V. Ensemble pour générer un rayonnement ultraviolet, et dispositif de bronzage comprenant un tel ensemble

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DE10204691C1 (de) * 2002-02-06 2003-04-24 Philips Corp Intellectual Pty Quecksilberfreie Hochdruckgasentladungslampe und Beleuchtungseinheit mit einer solchen Hochdruckgasentladungslampe
DE10242049A1 (de) 2002-09-11 2004-03-25 Philips Intellectual Property & Standards Gmbh Niederdruckgasentladungslampe mit zinnhaltiger Gasfüllung
DE10242241A1 (de) * 2002-09-12 2004-03-25 Philips Intellectual Property & Standards Gmbh Niederdruckgasentladungslampe mit Ba TiO3-ähnlichen Elektronen-Ermittersubstanzen
DE10242245A1 (de) * 2002-09-12 2004-03-25 Philips Intellectual Property & Standards Gmbh Niederdruckgasentlastungslampe mit einem Erdalkalioxidgemisch als Elektronen-Ermittersubstanz
JP4344355B2 (ja) * 2003-02-18 2009-10-14 財団法人国際科学振興財団 蛍光管及びその製造方法
ATE385039T1 (de) * 2003-08-07 2008-02-15 Koninkl Philips Electronics Nv Niederdruck-gasentladungslampe mit erdalkali- chalkogeniden als elektronenemittermaterial
CN1860580A (zh) * 2003-09-30 2006-11-08 皇家飞利浦电子股份有限公司 具有用于结合氧和水的试剂的低压气体放电灯
WO2005117065A2 (fr) * 2004-05-27 2005-12-08 Philips Intellectual Property & Standards Gmbh Lampe a decharge basse pression contenant un halogenure metallise
CN1957438A (zh) * 2004-05-27 2007-05-02 皇家飞利浦电子股份有限公司 包括放电维持化合物的低压放电灯
US7265493B2 (en) * 2004-10-04 2007-09-04 General Electric Company Mercury-free compositions and radiation sources incorporating same
WO2006043200A1 (fr) * 2004-10-19 2006-04-27 Koninklijke Philips Electronics N.V. Lampe a decharge gazeuse basse pression destinee a l'eclairage en arriere-plan avec une large gamme de couleurs
WO2006043191A1 (fr) * 2004-10-20 2006-04-27 Philips Intellectual Property & Standards Gmbh Lampe a decharge a haute intensite
US20060132043A1 (en) * 2004-12-20 2006-06-22 Srivastava Alok M Mercury-free discharge compositions and lamps incorporating gallium
US7847484B2 (en) * 2004-12-20 2010-12-07 General Electric Company Mercury-free and sodium-free compositions and radiation source incorporating same
US7825598B2 (en) * 2004-12-20 2010-11-02 General Electric Company Mercury-free discharge compositions and lamps incorporating Titanium, Zirconium, and Hafnium
CN101164135A (zh) * 2005-04-20 2008-04-16 皇家飞利浦电子股份有限公司 包括铟和钠的卤化物的低压气体放电灯
US20060290284A1 (en) * 2005-06-28 2006-12-28 Osram Sylvania Inc. Lamp with phosphor layer on an exterior surface and method of applying the phosphor layer
JP2008545233A (ja) * 2005-06-29 2008-12-11 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 分子放射体及び添加剤を有する低圧放電ランプ
JP2009537941A (ja) * 2006-05-15 2009-10-29 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 改良された効率を有する低圧ガス放電ランプ
US8282986B2 (en) * 2006-05-18 2012-10-09 Osram Sylvania, Inc. Method of applying phosphor coatings
US8994288B2 (en) 2013-03-07 2015-03-31 Osram Sylvania Inc. Pulse-excited mercury-free lamp system
CN105810551A (zh) * 2014-12-31 2016-07-27 广东雪莱特光电科技股份有限公司 一种无汞高压气体放电灯

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DE3306375A1 (de) * 1982-03-01 1983-09-08 General Electric Co., Schenectady, N.Y. Leuchtstoff-bogenentladungslampe
RU2035794C1 (ru) * 1993-03-02 1995-05-20 Акционерное общество "Лисма" - завод специальных источников света и электровакуумного стекла Установка для облучения растений

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002103748A1 (fr) * 2001-06-19 2002-12-27 Koninklijke Philips Electronics N.V. Lampe a decharge de gaz a basse pression contenant une atmosphere gazeuse sans mercure
WO2004011846A1 (fr) 2002-07-25 2004-02-05 Philips Intellectual Property & Standards Gmbh Systeme de lampe avec lampe a decharge gazeuse vert-bleu et del jaune-rouge
WO2005045881A1 (fr) * 2003-11-11 2005-05-19 Koninklijke Philips Electronics N.V. Lampe a decharge de vapeur a basse pression et a gaz de remplissage exempt de mercure
WO2006043204A2 (fr) * 2004-10-19 2006-04-27 Koninklijke Philips Electronics N.V. Lampe de bronzage a lumiere blanche a indice de rendu des couleurs eleve
WO2006043204A3 (fr) * 2004-10-19 2006-06-22 Koninkl Philips Electronics Nv Lampe de bronzage a lumiere blanche a indice de rendu des couleurs eleve
WO2007085972A1 (fr) * 2006-01-24 2007-08-02 Koninklijke Philips Electronics N.V. Ensemble pour générer un rayonnement ultraviolet, et dispositif de bronzage comprenant un tel ensemble

Also Published As

Publication number Publication date
DE10044562A1 (de) 2002-03-21
CN1342994A (zh) 2002-04-03
US6972521B2 (en) 2005-12-06
EP1187174A3 (fr) 2006-03-29
JP2002124211A (ja) 2002-04-26
US20020047525A1 (en) 2002-04-25

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