JPH07272694A - Dielectric barrier discharge fluorescent lamps - Google Patents

Dielectric barrier discharge fluorescent lamps

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Publication number
JPH07272694A
JPH07272694A JP8265794A JP8265794A JPH07272694A JP H07272694 A JPH07272694 A JP H07272694A JP 8265794 A JP8265794 A JP 8265794A JP 8265794 A JP8265794 A JP 8265794A JP H07272694 A JPH07272694 A JP H07272694A
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discharge
dielectric barrier
discharge vessel
electrode
barrier discharge
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JP3211548B2 (en
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Tatsumi Hiramoto
Ryushi Igarashi
Hiromitsu Matsuno
龍志 五十嵐
立躬 平本
博光 松野
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Ushio Inc
ウシオ電機株式会社
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Abstract

PURPOSE:To provide a fluorescent lamp of a compacted structure which can emit a sufficiently large photo output, by furnishing a thin and long inside electrode, whose ratio of the length to the outside diameter is given a specific value, at the inside of a discharge vessel lined with a phosphor coating film. CONSTITUTION:A discharge vessel 1 is formed as a tube of soda lime glass, whose one end 11 connected with an inside electrode 5 airtightly and other end 12 is closed airtightly. As an outside electrode 4, a cylindrical wire netting of stainless steel is furnished at the outer surface of the discharge vessel 1, while its inner surface is coated with a phosphor 100. The inside electrode 5 is formed as a solid rod having an L/D ratio of 30 or more, where L is the electrode length and D is outside diameter, and is installed at the end 11 of the vessel 1 airtightly in such a way as coaxial with the vessel 1 with the other end 6 located inside of the vessel 1. Xenon, etc., is encapsulated as a gas for discharging.

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【産業上の利用分野】本発明は、蛍光ランプに係わり、 The present invention relates to relates to a fluorescent lamp,
特に、ファクシミリや液晶表示のバックライト等の情報機器用の蛍光ランプに係わり、特に、誘電体バリア放電によってエキシマ分子を形成し、該エキシマ分子から放射される光を利用するいわゆる誘電体バリア放電を紫外線源とする誘電体バリア放電蛍光ランプの改良に関する。 In particular, relates to a fluorescent lamp for information equipment such as a facsimile machine or a liquid crystal display backlight, in particular, to form excimer molecules by a dielectric barrier discharge, a so-called dielectric barrier discharge to utilize light emitted from the excimer molecules an improvement of the dielectric barrier discharge fluorescent lamp to ultraviolet radiation source.

【0002】 [0002]

【従来の技術】本発明に関連した技術としては、例えば、日本国公開特許公報平2ー7353号があり、そこには、放電容器にエキシマ分子を形成する放電用ガスを充填し、誘電体バリア放電(別名オゾナイザ放電あるいは無声放電。電気学会発行改定新版「放電ハンドブック」平成1年6月再販7刷発行第263ページ参照)によってエキシマ分子を形成せしめ、該エキシマ分子から放射される光で蛍光体を励起するランプ、すなわち誘電体バリア放電蛍光ランプについて記載されており、該放電容器は円筒状であり、該放電容器の少なくとも一部は該誘電体バリア放電の誘電体を兼ねており、該誘電体は光透過性であり、該誘電体の少なくとも一部に導電性網状電極が設けられた誘電体バリア放電蛍光ランプ構造が記載されている。 As a technique related to the Prior Art The present invention, for example, there is Japanese Patent Publication Rights 2-Patent 7353, there is filled with discharge gas which forms excimer molecules in the discharge vessel, the dielectric barrier discharge (also known as ozonizer discharge or silent discharge. electrical Engineers issued see revised new edition "discharge Handbook" 1989 June re 7 Printing issued 263 pages) by allowed formation of excimer molecules, fluorescence light emitted from the excimer molecules lamp to excite the body, i.e., have been described for the dielectric barrier discharge fluorescent lamps, the discharge vessel is cylindrical, at least a portion of the discharge vessel also serves as a dielectric of the dielectric barrier discharge, the the dielectric is light transmissive, dielectric barrier discharge fluorescent lamp structure in which at least a part in the conductive mesh electrode is provided in the dielectric is described. また、誘電体バリア放電用の電極が金属であり、該金属電極が放電用ガスに接触している構成の誘電体バリア放電ランプについては、米国特許第51 Further, a metal electrode for dielectric barrier discharge, for a dielectric barrier discharge lamp arrangement in which the metal electrode is in contact with the discharge gas, U.S. Patent No. 51
73638号に記載されている。 It is described in EP 73,638. 上記のような誘電体バリア放電蛍光ランプは、従来のアーク放電もしくはグロー放電を利用した蛍光ランプには無い種々の特長を有しているため有用である。 Dielectric barrier discharge fluorescent lamp as described above, is useful because it has no different features to fluorescent lamps utilizing conventional arc discharge or glow discharge. しかし、上記のような誘電体バリア放電蛍光ランプは、形状が必ずしもコンパクトでなく、また、コンパクトな形状にするとランプへの注入電力が不十分になって光出力が不十分になったり、あるいは放電が不安定になって光出力が不安定になるという問題があった。 However, a dielectric barrier discharge fluorescent lamp as described above, the shape is not necessarily compact, also may become insufficient light output becomes insufficient injection power to the lamp when the compact shape, or discharge there has been a problem that the light output becomes unstable unstable.

【0003】 [0003]

【発明が解決しようとする課題】本発明の課題は、コンパクトで、光出力が十分に大きく、かつ、安定である誘電体バリア放電蛍光ランプを提供することである。 Of the present invention 0008] problem, a compact, light output is sufficiently large, and is to provide a dielectric barrier discharge fluorescent lamp is stable.

【0004】 [0004]

【課題を解決するための手段】上記本発明の目的は、少なくとも、光透過性で、細長い管状で、誘電体バリア放電の誘電体を兼ねた放電容器と、該放電容器の内面の少なくとも一部に設けた蛍光体塗布膜と、該放電容器の外面の少なくとも一部に設けた誘電体バリア放電を行うための外側電極と、該放電容器の内側に配置された、長さLと外径Dの比の値L/Dが30以上の細長い内側電極と、該誘電体と内側電極との間に充填された該誘電体バリア放電によってエキシマ分子を形成する放電用ガスからなる誘電体バリア放電を利用した概略管状である誘電体バリア放電蛍光ランプとして構成し、特に、該内側電極が細長い金属丸棒あるいは細長い金属円管からなり、 The purpose of the present invention SUMMARY OF THE INVENTION may, at least an optically transparent, an elongated tubular, and the discharge vessel which also serves as a dielectric of the dielectric barrier discharge, at least a portion of the inner surface of the discharge vessel a phosphor coating film provided, the outer electrode for performing dielectric barrier discharge which is provided on at least a portion of the outer surface of the discharge vessel, which is arranged inside the discharge vessel, the length L and outer diameter D the value L / D is 30 or more elongated inner electrode of the ratio of the dielectric barrier discharge consisting discharge gas which forms excimer molecules by have been dielectric barrier discharge filling between the dielectric body and the inner electrode configured as a schematic tubular utilizing dielectric barrier discharge fluorescent lamps, in particular, the inner electrode an elongated metal rod or elongated metal circular pipe,
該内側電極が放電用ガスに接している構成にすることによって達成される。 Is the inner electrode is achieved by the structure in contact with the discharge gas.

【0005】また、該内側電極にゲッタを取り付けたこと、該細長い金属棒あるいは細長い金属管の一端は、該放電容器の一端に気密に取り付けられかつ放電容器の外部に引き出されており、他端は該放電容器内にあるように構成にすること、該細長い金属棒あるいは細長い金属管の他端が該放電容器の他端に固定されている構成にしたこと、あるいは、該細長い金属棒あるいは細長い金属管の他端が該放電容器の他端にゆるく保持されている構成にしたこと、さらに、該細長い金属棒あるいは細長い金属管の他端を該放電容器の他端にゆるく保持する部材が該誘電体バリア放電蛍光ランプの排気管の残部を兼ねている構成にする事によって、本発明の目的はよりいっそう達成される。 Further, it was fitted with a getter to inner electrode, one end of the elongated metal bar or elongated metal tube is drawn out of one end hermetically attached to and discharge vessel discharge vessel, the other end be the structure such that in the discharge vessel, that the other end of the elongated metal bar or elongated metal tube has a structure which is fixed to the other end of the discharge vessel, or the elongated metal bar or elongated the other end of the metal tube has a configuration that is loosely held to the other end of the discharge vessel further member for loosely holding the other end of the elongated metal bar or elongated metal tube to the other end of the discharge vessel is the by a configuration that also serves as the remainder of the exhaust pipe of the dielectric barrier discharge fluorescent lamp, an object of the present invention is further achieved.

【0006】さらに、該誘電体バリア放電蛍光ランプを該放電容器の円周外面の一部に長手方向に沿って設けた、スリット状に光を取り出す部分を有するアパーチャ形蛍光ランプにすること、さらに、該光取り出し部分の外面に、該外側電極と電気的に接続され、かつ、光透過性である部材を設けた構成にすること、該外側電極を該放電容器の外面の一部分に設置し、該光取り出し部分を該外側電極の反対側の位置に設け、かつ、該内側電極を該放電容器の中心軸よりも該光取り出し部分に接近させて設けた構成にしたこと、あるいは、該外側電極を該放電容器の外面の一部分に設置し、該光取り出し部分を該外側電極の反対側の位置に設け、かつ、該内側電極を該放電容器の中心軸よりも該光取り出し部分から遠ざけて設けた構成にしたこ Furthermore, the dielectric barrier discharge fluorescent lamps are provided along the longitudinal direction in a part of the circumferential outer surface of the discharge vessel, to the aperture fluorescent lamp having a portion for taking out the light in a slit form, further , the outer surface of the light extraction portion, is outer electrode electrically connected, and, to a structure in which a member is light transmissive, set up outer electrode to a portion of the outer surface of the discharge vessel, the light extraction portion provided on the side opposite to the position of the outer electrode, and that the inner electrode and the structure provided by close to the light take-out portion than the central axis of the discharge vessel, or outer electrode was placed in a portion of the outer surface of the discharge vessel is provided with light extraction portion provided on the side opposite to the position of the outer electrode and the inner electrode away from the light take-out portion than the central axis of the discharge vessel this was in configurations によって本発明の目的はよりいっそう達成される。 The object of the invention is further achieved by.

【0007】また、該放電容器が円筒であり、該内側電極が丸棒あるいは円管状の金属であり、該放電容器の内径を、該内側電極の外径の3倍から40倍の範囲に構成すること、該外側電極を該放電容器の全外周面にわたって設け、かつ、 該内側電極の中心軸と該放電容器の中心軸との距離を該内側電極の外径以上離して設置した構成にしたこと、該外側電極をシームレスの円筒状金網で構成にしたことによって本発明の目的はよりいっそう達成される。 Further, a discharge vessel is cylindrical, the inner electrode is a round bar or a circular tubular metal, the inner diameter of the discharge vessel, constructed in the range of from 3 times to 40 times the outer diameter of the inner electrode to it, the outer electrode is provided over the entire outer peripheral surface of the discharge vessel, and was the distance between the central axis of the discharge vessel of inner electrodes installed configuration apart equal to or greater than the outer diameter of the inner electrode it is an object of the present invention are further achieved by you configure the outer electrode seamless cylindrical metal net.

【0008】 [0008]

【作用】ファクシミリや液晶表示のバックライト等の情報機器用の蛍光ランプの重要な性能として、機器全体をコンパクトにするために、コンパクト性が要求される。 [Act as important performance of the fluorescent lamp for information equipment such as a facsimile machine or a liquid crystal display backlight, in order to compact the entire device, compactness is required.
すなわち、外径が小さく、有効発光長に対する全長の割合が小さい事が要求される。 That is, the outer diameter is small, is required that the proportion of the total length is small relative to the effective light-emitting length. しかし、従来の誘電体バリア放電蛍光ランプは、形状をコンパクトにすることが困難で、また、コンパクトな形状に出来たとしてもランプへの注入電力が不十分になって光出力が不十分になったり、あるいは放電が不安定になって光出力が不安定になるという問題があった。 However, conventional dielectric barrier discharge fluorescent lamp, it is difficult to shape into a compact, also becomes insufficient light output electrical power injected into the lamp becomes insufficient as could the compact shape or, or discharge is a problem that the light output becomes unstable unstable.

【0009】以下、従来の誘電体バリア放電蛍光ランプの概略図を図12に示して、上記した問題点を説明する。 [0009] Hereinafter, a schematic view of a conventional dielectric barrier discharge fluorescent lamp shown in FIG. 12, for explaining the above-mentioned problems. 放電容器1はガラス製で、内側管22、外側管23 The discharge vessel 1 is made of glass, the inner tube 22, outer tube 23
を同軸に配置して中空円筒状にしたものである。 The disposed coaxially is obtained by a hollow cylindrical shape. 外側管23および内側管22の内面には、蛍光体100が塗布されている。 The inner surface of the outer tube 23 and inner tube 22, a phosphor 100 is coated. また、外側管23の外面には光透過性の誘電体バリア放電用の電極24が、内側管22の外面にはアルミニウムの蒸着によって形成した光反射膜を兼ねた誘電体バリア放電用の電極25がそれぞれ設けられている。 The electrode 24 of the dielectric barrier discharge light transmitting the outer surface of the outer tube 23, the electrode 25 of the dielectric barrier discharge which also serves as a light reflection film formed by vapor deposition of aluminum on the outer surface of the inner tube 22 There has been provided, respectively. 放電容器の一端には、ゲッタ27を収納するゲッタ室26が設けられている。 At one end of the discharge vessel, a getter chamber 26 for accommodating the getter 27 is provided. アルミニウムの蒸着によって形成した電極25を機械的、化学的に保護するために、 Mechanically electrode 25 formed by vapor deposition of aluminum, in order to chemically protected,
電極25の上に窒化ほう素からなる保護膜28が設けられている。 Protective film 28 made of boron nitride is formed on the electrode 25. 誘電体バリア放電は、該「放電ハンドブック」に記載されているように、プラズマの直径が非常に小さく、かつ、放電の持続時間が非常に短い微小な放電プラズマ(以後これをマイクロプラズマと記す)の多数の集まりである。 The dielectric barrier discharge, as is described in the "discharge Handbook", plasma diameter is very small, and the duration of discharge (referred to hereafter as this microplasma) very short small discharge plasma a large number of the collection of. 放電空間29に、誘電体バリア放電によってエキシマ分子を形成する放電用ガスを充填し、交流電源21によって電極24,25に電圧を印加すると、放電空間に多数のマイクロプラズマが安定に発生し、エキシマ光が放出され、該蛍光体がエキシマ光によって励起されて可視光を放出する。 The discharge space 29, filled with a discharge gas which forms excimer molecules by a dielectric barrier discharge, when a voltage is applied to the electrodes 24 and 25 by an AC power source 21, a large number of micro-plasma in the discharge space is generated stably, excimer light is emitted, to emit visible light phosphor is excited by excimer light.

【0010】しかし、図12から明らかなように、先ず第一に、電極24,25の間に二枚の誘電体22,23 [0010] However, as is clear from FIG. 12, first of all, the two between the electrodes 24 and 25 dielectric 22
が存在し、かつ、電極25の保護膜28が設けられているので、該蛍光ランプを細径化するのが著しく困難である。 There exist, and, since the protective film 28 of the electrode 25 is provided, it is considerably difficult to reduce the diameter of the fluorescent lamp. 第二に、細径化出来としても内側管22の放電空間に面した表面積が小さくなるため、放電空間への電力注入量が減少し、その結果、光出力が低下するという欠点が生じる。 Secondly, the surface area facing the discharge space of the inner tube 22 as diameter reduction can be smaller, power injection amount to the discharge space is decreased, as a result, disadvantage that the light output is lowered. 第三に、放電容器内に金属が存在しないためゲッタを固定することが出来ないので、ゲッタを収納するためのゲッタ収納室を放電空間とは別に設ける必要があり、ランプの全長が長くなる等の問題が生じる。 Thirdly, it is not possible to fix the getter for the discharge vessel metal is not present, it is necessary to the provided separately from the discharge space a getter housing chamber for housing the getter, such as the overall length of the lamp is prolonged It occurs problems.

【0011】本発明の原理を説明するまえに、まず、一般的な誘電体バリア放電の概要について説明する。 [0011] Before describing the principles of the present invention, first, an outline of a typical dielectric barrier discharge is described. 数十トール以上の中気圧アーク放電ランプや高圧アーク放電ランプなどの通常の放電においては放電空間に放電プラズマが一条だけ存在し、電極面上には一個の小さな電極輝点が生じている。 Tens In normal discharge, such as tall or more of pressure arc discharge lamps and high-pressure arc discharge lamps present only discharge plasma Article in the discharge space, one of the small electrodes bright spot on the electrode surface occurs. すなわち、電極の面積を大きくしても、実質的に電極としての役割をしている部分は非常に小さい部分である。 That is, even by increasing the area of ​​the electrode, the portion that serves as a substantially electrode is a very small portion. 他方、該放電ハンドブックに記載されているように、誘電体バリア放電においては、その放電路に誘電体が挿入されているので、この誘電体が放電プラズマが一条に収斂するのを阻止するので、放電空間に多条の放電プラズマが存在し、電極の広い面積にわたって多数の電極輝点が均一に存在することになる。 On the other hand, as described in the discharge handbook, in the dielectric barrier discharge, since the dielectric is inserted into the discharge path, since the dielectric is prevented from discharge plasma converges to Ichijo, multi-start of the discharge plasma in the discharge space is present, a number of electrodes bright spots will be present uniformly over a wide area of ​​the electrode. 誘電体バリア放電ランプにおいてエキシマ光が高効率で放出される原因の一つは、上記した多条の放電プラズマの存在である。 One of the causes of excimer light in a dielectric barrier discharge lamp is emitted at a high efficiency is the presence of multiple-start of the discharge plasma as described above. 放電路に誘電体が挿入されている場合における放電空間への電力の注入は、大雑把には、放電空間に印加される電圧、すなわち、放電維持電圧と、該誘電体における電圧降下の比に、すなわち、放電プラズマのインピーダンスと誘電体のインピーダンスの比にほぼ比例する。 Power injection into the discharge space when a dielectric is inserted in the discharge path, the rough, the voltage applied to the discharge space, i.e., a discharge sustain voltage, the ratio of the voltage drop across the dielectric, that is approximately proportional to the ratio of the impedance of the impedance and dielectric discharge plasma. 放電空間を挟んで二枚の誘電体が存在する構成の誘電体バリア放電ランプにおいては、放電プラズマが一条に収斂するのを阻止する効果が大きいので、多条の放電プラズマが安定に存在し、その結果、安定な光出力が得られるが、他方、誘電体が二枚存在するので、放電空間に電力が注入されにくく、その結果、光出力が十分に得られないという欠点が生じる。 In the structure of the dielectric barrier discharge lamp two dielectric across the discharge space is present, the discharge plasma is greater the effect of preventing the converging Ichijo, multi-start of the discharge plasma is stably present, as a result, stable optical output can be obtained, while, since the dielectric is present two, power is hardly injected into the discharge space, as a result, disadvantage that the light output is not sufficiently obtained results. これに対して、一枚の誘電体だけを有する誘電体バリア放電ランプ、すなわち、一つの電極が放電用ガスに接している構造の誘電体バリア放電ランプにおいては、放電空間への電力注入が容易になるという利点が生じるが、他方、放電プラズマが一条に収斂するのを阻止する効果が小さいので、一時的に、放電用ガスに接している金属電極上の一点に放電が集中して、その結果、放電が不安定で光出力が不安定になっり、エキシマ光の放射効率が低下するなどの不利点が生じる。 In contrast, a dielectric barrier discharge lamp having only a single dielectric, i.e., in the dielectric barrier discharge lamp having a structure one electrode is in contact with the discharge gas, facilitates power injected into the discharge space Although advantage that the results, while the discharge since the plasma is less effective to prevent the converging Ichijo, temporarily, discharge is concentrated at one point on the metal electrode in contact with the discharge gas, the result, discharge is unstable and the light output is unstable Narri, the disadvantage of such radiation efficiency of excimer light is lowered occurs.

【0012】本発明者等は、少なくとも、光透過性で、 [0012] The present inventors have at least an optically transparent,
細長い管状で、誘電体バリア放電の誘電体を兼ねた放電容器と、該放電容器の内面の少なくとも一部に設けた蛍光体塗布膜と、該放電容器の外面の少なくとも一部に設けた誘電体バリア放電を行うための外側電極と、該放電容器の内側に配置された細長い内側電極と、該放電容器に充填された該誘電体バリア放電によってエキシマ分子を形成する放電用ガスからなる誘電体バリア放電を利用した概略管状である蛍光ランプにおいて、放電用ガスとしてキセノンガス、もしくは塩素と希ガスの混合ガスを使用して、該内側電極の形状を変化させて、放電プラズマが一条に収斂する現象について検討を行った。 An elongated tubular, and the discharge vessel which also serves as a dielectric of the dielectric barrier discharge, and a phosphor coating film provided on at least a portion of the inner surface of the discharge vessel, a dielectric provided on at least a portion of the outer surface of the discharge vessel and the outer electrode for conducting barrier discharge, the discharge elongated inner electrode disposed inside the container, consisting of a discharge gas which forms excimer molecules by dielectric barrier discharge which is filled in the discharge vessel dielectric barrier in the fluorescent lamp is a schematic tubular utilizing discharge, xenon gas as the discharge gas or using a mixed gas of chlorine and inert gas, by changing the shape of the inner electrode, discharge plasma converges to Article phenomena It was investigated. その結果、該内側電極を細長い金属棒あるいは細長い金属管で構成すると、該内側電極が放電用ガスに接していても、 As a result, when configuring the inner electrode of an elongated metal bar or elongated metal tube, even if the inner electrode in contact with the discharge gas,
放電プラズマが一条に収斂する現象が発生しにくい事を発見した。 Phenomenon in which the discharge plasma is converged to Article was discovered that less likely to occur. ここで言う「細長い」の意味は、金属棒あるいは金属管の誘電体バリア放電用電極として動作している部分の長さと平均的な外径の比が大きいことで、特に、この比が30以上において放電プラズマが一条に収斂する現象が発生しにくい。 The meaning of "elongated" here refers to the ratio of the length and the average outer diameter of the portion acting as the dielectric barrier discharge electrode of the metal rod or metal tube that is large, in particular, the ratio is 30 or more phenomenon in which the discharge plasma is converged to Article is unlikely to occur in.

【0013】すなわち、少なくとも、光透過性で、細長い管状で、誘電体バリア放電の誘電体を兼ねた放電容器と、該放電容器の内面の少なくとも一部に設けた蛍光体塗布膜と、該放電容器の外面の少なくとも一部に設けた誘電体バリア放電を行うための外側電極と、該放電容器の内側に配置された細長い内側電極と、該放電容器に充填された該誘電体バリア放電によってエキシマ分子を形成する放電用ガスからなる誘電体バリア放電を利用した概略管状である蛍光ランプにおいて、該内側電極を細長い金属棒あるいは細長い金属管で構成し、かつ、該内側電極が放電用ガスに接するように構成すると、先ず第一に、放電プラズマが一条に収斂する現象が発生しにくく、従って光出力の変動が少なく、第二に、放電路中に挿入されている誘電 [0013] That is, at least, an optically transparent, an elongated tubular, and the discharge vessel which also serves as a dielectric of the dielectric barrier discharge, and a phosphor coating film provided on at least a portion of the inner surface of the discharge vessel, the discharge excimer an outer electrode, an elongated inner electrode disposed inside the discharge vessel, by dielectric barrier discharge which is filled in the discharge vessel for performing a dielectric barrier discharge which is provided on at least a portion of the outer surface of the container in the fluorescent lamp is a schematic tubular using a dielectric barrier discharge consisting discharge gas to form a molecule, constitute the inner electrode of an elongated metal bar or elongated metal tube, and the inner electrode contact with the discharge gas When configured to, first of all, hardly phenomenon that discharge plasma converges to Article occurs, therefore variation of the optical output is small, is inserted into the second, in the discharge path dielectric が1枚に減少し、かつ、保護膜2 There was reduced to one, and the protective film 2
8も不要になるので、ランプの細径化が容易に実現でき、第三に、誘電体が1枚に減少したので表面積の小さな細長い内側電極を使用しても放電空間に十分に電力が注入でき、従って光出力が十分に大きく、かつ、光出力が安定でコンパクトな誘電体バリア放電蛍光ランプが得られる。 Since 8 also becomes unnecessary, diameter of the lamp can be easily realized, the third dielectric is sufficiently power to the discharge space using a small elongated inner electrode surface area so was reduced to one injection can, therefore sufficiently large light output and the light output is stable and compact dielectric barrier discharge fluorescent lamps are obtained.

【0014】さらに、蛍光体から放出された可視光は蛍光体膜で反射を繰り返した後に蛍光ランプから放出されるが、本発明のように、内側電極として細い金属棒あるいは細長い金属管を使用すると、内側電極による可視光の吸収が少なく、従って高い発光効率の蛍光ランプを得ることが出来る。 Furthermore, the visible light emitted from the phosphor is emitted from the fluorescent lamp after repeated reflection at the phosphor film, as in the present invention, a thin metal rod or elongated metal tube as the inner electrode , less absorption of visible light by the inner electrodes, thus it is possible to obtain a fluorescent lamp of high luminous efficiency.

【0015】ゲッタを該内側電極に取り付けると、別にゲッタ収納室あるいはゲッタを取り付けるための別な部材を設ける必要がないため、コンパトな蛍光ランプが得られる。 [0015] attaching a getter to inner electrode, there is no need to provide another member for attaching the getter housing chamber or getter separately Konpato fluorescent lamp is obtained.

【0016】該細長い金属棒あるいは細長い金属管の一端を、該放電容器の一端に気密に取り付けかつ放電容器の外部に引き出す構成にし、他端は該放電容器内にあるように構成すると、第一に、電極リード線が一端にのみ存在するのでコンバクト化が可能になり、第二に、誘電体バリア放電ランプを点灯するには高電圧が必要であり、高電圧が印加される電極リード線等の安全対策が必要であるが、上記の内側電極の方を高電圧にすることにより、絶縁対策が一端ですみ、さらにコンパクトな誘電体バリア放電蛍光ランプが得られる。 [0016] One end of the elongated metal bar or elongated metal tube, when a configuration to bring out to the outside of the attachment and the discharge vessel hermetically to one end of the discharge vessel, the other end is configured as in the discharge vessel, the first , since the electrode leads are present at only one end enables Konbakuto reduction, secondly, to light the dielectric-barrier discharge lamps are required high voltage, electrode lead wire or the like to which a high voltage is applied it is necessary safety measures are, by whichever of the above inner electrode a high voltage, insulation measures corner at one end is obtained more compact dielectric barrier discharge fluorescent lamps.

【0017】該細長い金属棒あるいは細長い金属管の他端を該放電容器の他端に固定する構成にすると、該金属電極は両端が支持されることになり、細長い金属電極を細長い放電容器の中に精度良い位置関係を保って設置することが可能になり、ばらつきの少ない誘電体バリア放電蛍光ランプが得られる。 [0017] The other end of the elongated metal bar or elongated metal tube to configure to fix the other end of the discharge vessel, the metal electrode will be opposite ends is supported in the elongated metal electrode of the elongated discharge vessel it is possible to install while maintaining the accurate positional relationship, little variation dielectric barrier discharge fluorescent lamp can be obtained. 該細長い金属棒あるいは細長い金属管の他端を該放電容器の他端にゆるく保持する構成にすると、第一に、製造が容易になり、第二に、該細長い金属電極として、放電容器の熱膨張率と異なる熱膨張率を有する金属を使用することが可能になり、例えばゲッタ材である金属を電極として使用することが可能になり、長寿命化等の対策の自由度が大きくなるという利点が生じる。 When the other end of the elongated metal bar or elongated metal tube to a configuration that loosely held to the other end of the discharge vessel, first, manufacturing is facilitated, the second, the elongated metal electrodes, the discharge vessel heat advantage it is possible to use a metal having a coefficient of expansion different from the coefficient of thermal expansion, for example, it is possible to use a metal as the getter material as an electrode, the degree of freedom of measures such as longer life increases It occurs. 該細長い金属棒あるいは細長い金属管の他端を該放電容器の他端にゆるく保持する部材を該誘電体バリア放電蛍光ランプの排気管の残部と兼用させると、 If is also used as the remainder of the exhaust pipe of the elongated metal bar or elongated other end discharge vessel and the other end loosely holding members a dielectric barrier discharge fluorescent lamps of the metal tube,
製造がさらに容易になり、かつ、安価になるという利点が生じる。 Manufacturing becomes easier, and results in the advantage that less expensive.

【0018】放電容器の外面の一部に設けたスリット状の光取り出し部分から光を取り出す方式のアパーチャ形蛍光ランプは、放電容器の外面の全外周面からほぼ均一に可視光が放出される通常の蛍光ランプに比較し、蛍光体から放出された可視光が蛍光体膜で数多く反射されたのちに光取り出し部分から放出されるので、さらにコンパクトで高出力となるなど特徴がある。 The aperture type fluorescent lamp type which emit light from a portion in the slit-like light extraction portion provided on the outer surface of the discharge vessel, usually visible light is emitted substantially uniformly from the entire outer peripheral surface of the outer surface of the discharge vessel fluorescent lamps compared to, since visible light emitted from the phosphor is emitted from the light extraction portion after being many reflected by the phosphor layer is characterized such a high output yet compact. 従って、放電容器内に設けられた電極を小さくすることがさらに重要であり、かつ、大きな電力を注入する必要がある。 Therefore, it is even more important to reduce the electrode provided in the discharge vessel, and it is necessary to inject a large amount of power. 該内側電極が細長い金属棒あるいは細長い金属管からなり、該内側電極が放電用ガスに接している構成を特徴とした誘電体バリア放電蛍光ランプは、アパーチャ形の蛍光ランプに構成する事によって、上記した特長がより一層発揮できる。 Is inner electrode an elongated metal bar or elongated metal tube, by the inner electrode dielectric barrier discharge fluorescent lamps, wherein configuration that is in contact with the discharge gas, constituting the aperture type fluorescent lamp, the the features can be exhibited more effectively.

【0019】該光取り出し部分の外面に、該外側電極と電気的に接続され、かつ、光透過性である部材を設けた構成にすると、誘電体バリア放電によって発生した電磁雑音電波が光取り出し部分から漏れるのを防止出来るという利点が生じる。 [0019] the outer surface of the light extraction portion, said outer electrode and is electrically connected, and, when the structure in which a member is light transmissive, extraction electromagnetic noise electric wave generated by the dielectric barrier discharge light portions an advantage that can be prevented from leaking out of the results. 該誘電体バリア放電蛍光ランプにおいて、該外側電極を該放電容器の外周面の一部分に設置し、該光取り出し部分を該外側電極の反対側の位置に設け、かつ、該内側電極を該放電容器の中心軸よりも該光取り出し部分から離れて設けた構成にすると、該内側電極が光取り出し部分から離れているので光の取り出し効率が高くなり、かつ、該外側電極と該内側電極の距離が短くなるので、放電始動電圧が低下するという利点が生じる。 In dielectric barrier discharge fluorescent lamps, the outer electrode is placed on a portion of the outer peripheral surface of the discharge vessel is provided with light extraction portion on the opposite side of the position of the outer electrode, and the discharge vessel inner electrode When the structure in which apart from the light take-out portion than the central axis of, since the inner electrode is separated from the light extraction portion light extraction efficiency becomes high, and the distance of the outer electrode and the inner electrode since shorter, advantage discharge starting voltage is lowered. 該誘電体バリア放電蛍光ランプにおいて、該外側電極を該放電容器の外周面の一部分に設置し、該光取り出し部分を該外側電極の反対側の位置に設け、かつ、該内側電極を該放電容器の中心軸よりも該光取り出し部分に近づけて設けた構成にすると、該外側電極と該内側電極間の距離が大きくなり、従って放電空間を大きくできるので、より細い放電容器で大きな光出力が得られるという利点が生じる。 In dielectric barrier discharge fluorescent lamps, the outer electrode is placed on a portion of the outer peripheral surface of the discharge vessel is provided with light extraction portion on the opposite side of the position of the outer electrode, and the discharge vessel inner electrode When the central axis of a configuration provided close to the light take-out portion, the distance between the outer electrode and the inner electrode is increased, hence the discharge space can be increased, a large light output in a more narrow discharge vessel give advantage that may occur.

【0020】該放電容器が円筒であり、該内側電極が丸棒あるいは円管状の金属である該誘電体バリア放電蛍光ランプにおいては、該円筒状の放電容器の内径が、丸棒あるいは円管状の金属からなる該内側電極の外径の3倍未満においては、内側電極による可視光の吸収が無視できななり、また、該内側電極の外径の40倍を越えた領域においては、外側電極と内側電極との電極面積のアンバランスにより放電が不安定になると言う欠点が生じた。 [0020] a discharge vessel is cylindrical, the inner electrode in the dielectric barrier discharge fluorescent lamp is a round bar or a circular tubular metal, the inner diameter of the cylindrical discharge vessel, round bar or a circular tube in less than three times the outer diameter of the inner electrode made of a metal, the absorption of visible light, such will be ignored by the inner electrode, also, in the region beyond the 40 times the outer diameter of the inner electrode, an outer electrode disadvantage that the discharge becomes unstable occurs by unbalance of the electrode area of ​​the inner electrode. 即ち、該放電容器が円筒であり、該内側電極が丸棒あるいは円管状の金属であり、該放電容器の内径を、該内側電極の外径の3倍から40倍の範囲に構成することにより、発光効率が十分で、かつ、光出力の安定な誘電体バリア放電蛍光ランプが得られる。 That is, a discharge vessel is cylindrical, the inner electrode is a round bar or a circular tubular metal, the inner diameter of the discharge vessel, by configuring the range of from 3 times to 40 times the outer diameter of the inner electrode , luminous efficiency is sufficient, and stable dielectric barrier discharge fluorescent lamp light output is obtained.

【0021】該放電容器が円筒であり、該内側電極が丸棒あるいは円管状の金属である該誘電体バリア放電蛍光ランプにおいて、該外側電極を該放電容器の全外周面に渡って設け、かつ、該内側電極の中心軸と該放電容器の中心軸との距離を該内側電極の外径以上離して設置した構成にすると、該内側電極と該外側電極間の距離が短くなるので、放電始動電圧が低くなり、従って点灯用電源が簡略になるという利点が生じる。 [0021] a discharge vessel is cylindrical, the dielectric barrier discharge fluorescent lamps inner electrode is a round rod or circular tubular metal, provided across the outer electrode to all the outer peripheral surface of the discharge vessel, and , when the structure is installed the distance between the central axis of the discharge vessel of the inner electrode apart equal to or greater than the outer diameter of the inner electrode, the distance between the inner electrode and the outer electrode is shortened, the discharge start voltage is lowered, therefore the advantage that the lighting power source is simplified occurs. 放電始動電圧低下の効果は、該内側電極の中心軸と該放電容器の中心軸との距離が該内側電極の外径以上において著しい。 The effect of the discharge starting voltage decreases, the distance between the central axis of the discharge vessel of the inner electrode is remarkable in equal to or greater than the outer diameter of the inner electrode.

【0022】該外側電極をシームレスの円筒状金網で構成すると、平板状の金網を巻きつけて円筒状に構成した場合に生じる金網の縁の重なり部分が無いので、誘電体バリア放電蛍光ランプの外径が小さくなるという利点が生じる。 [0022] constituting the outer electrode seamless cylindrical metal net, there is no edge overlapping portions of wire mesh caused when configured cylindrically winding a flat wire mesh, the outer dielectric barrier discharge fluorescent lamps advantage that the diameter is reduced occurs.

【0023】 [0023]

【実施例】本発明の第一の実施例の誘電体バリア放電蛍光ランプを、図1に示す。 The dielectric barrier discharge fluorescent lamp of the first embodiment of the embodiment of the present invention, shown in FIG. 放電容器1は、内径5mm、 The discharge vessel 1 has an inner diameter 5 mm,
全長200mmのソーダ石灰ガラス管で、その一端11 Soda lime glass tube of the full-length 200 mm, one end 11
には内側電極5が気密にとりつけられ、他端12は気密に閉鎖されている。 The inner electrode 5 mounted hermetically, the other end 12 is closed hermetically in. 放電容器1の外面には外側電極4としてシームレスのステンレス円筒金網を設け、内面には蛍光体100として緑色に発光するLaPO 4 :CeT The outer surface of the discharge vessel 1 is provided a seamless stainless steel cylindrical wire mesh as an outer electrode 4, the inner surface emits green light as the phosphor 100 LaPO 4: CET
bを塗布した。 b was applied. 蛍光体100は、他端12の内部にも塗布されている。 Phosphor 100 is also applied to the inside of the other end 12. 内側電極5は、熱膨張率がソーダ石灰ガラスに近い鉄とニッケルの合金からなる直径1mmの無空棒で、該放電容器1と同軸に、かつ、内側電極の他端6が放電容器内に存在する状態で、該放電容器の一端1 Inner electrode 5 is a non-empty rod diameter 1mm coefficient of thermal expansion of iron and nickel alloys close to soda lime glass, the discharge vessel 1 coaxially, and the other end 6 of the inner electrode discharge vessel while present, one end 1 of the discharge vessel
1に気密に取り付けた。 Attached to the air-tight to 1. 内側電極の一端は放電容器1の外側に引き出され、電源21に接続される。 One end of the inner electrode is led out of the discharge vessel 1 is connected to a power supply 21. 放電容器1 The discharge vessel 1
には一端11付近に設けた排気管より、放電用ガスとしてキセノンを30kPa封入した。 The exhaust pipe provided in the vicinity of one end 11, the xenon was 30kPa enclosed as discharge gas. 3は、排気管の残部である。 3 is a remainder of the exhaust pipe. 外側電極4と内側電極5の間に電源21によって20kHz,3kVの高周波電圧を印加したところ、 It was applied 20 kHz, a high frequency voltage of 3kV by a power source 21 between the outer electrode 4 and the inner electrode 5,
安定な誘電体バリア放電が発生し、その結果、波長17 Stable dielectric barrier discharge occurs, as a result, the wavelength 17
2nmに最大値を有する真空紫外線が効率よく放射され、蛍光体100が発光した。 Vacuum ultraviolet radiation having a maximum value 2nm is efficiently radiated, phosphor 100 emits light. この実施例の誘電体バリア放電蛍光ランプの特長を纏めると、先ず第一に、放電プラズマが一条に収斂する現象が発生しにくく、従って光出力の変動が少なく、第二に、内側電極が直径1mm To summarize the features of the dielectric barrier discharge fluorescent lamp of this embodiment, first of all, the phenomenon that the discharge plasma is converged to Article hardly occurs, therefore variation of the optical output is small, the second, inner electrode diameter 1mm
と細いためランプの細径化が容易に実現でき、第三に、 When thin for possible diameter reduction is easily achieved in the lamp, the third,
表面積の小さな細長い内側電極は放電用ガスに接しているので、放電空間に十分に電力が注入でき、従って光出力が十分に大きく、第四に放電容器1の他端12まで発光するのでランプの有効発光長の割合が大きくなり、従って、光出力が大きく、かつ、安定でコンパクトな誘電体バリア放電蛍光ランプが得られた。 Since small elongated inner electrode surface area is in contact with the discharge gas sufficiently can be injected power to the discharge space, thus sufficiently large light output, lamp because light emission to the other end 12 of the discharge vessel 1 to the fourth effective proportion of emission length increases, therefore, the light output is large and stable, compact dielectric barrier discharge fluorescent lamp was obtained.

【0024】本発明の第二の実施例の誘電体バリア放電蛍光ランプを、図2に示す。 [0024] The dielectric barrier discharge fluorescent lamp of a second embodiment of the present invention, shown in FIG. 内側電極5は管状であり、 The inner electrode 5 is tubular,
その両端は、放電容器1の両端11,12に気密に固定封止されている。 Both ends are sealed fixed sealed hermetically at both ends 11, 12 of the discharge vessel 1. この場合、電極が中空なので重量が小さくなるという利点が生じる。 In this case, the advantage that the electrode is hollow weight is reduced occurs. また、内側電極5の一部の表面にジルコニウムとチタンの合金である粉末ゲッタ2が塗布されている。 Also, the powder getter 2 is coated an alloy of zirconium and titanium in a part of the surface of the inner electrode 5. 本実施例においては、ゲッタを設けたにもかかわらずランプが大きくならず、かつ、内側電極が中空管状なので重量が小さくなるという利点が生じる。 In the present embodiment, not even though the lamp is largely provided getter, and produces the advantage that since the inner electrode hollow tubular weight is reduced.

【0025】本発明の第三の実施例の誘電体バリア放電蛍光ランプを、図3に示す。 [0025] The dielectric barrier discharge fluorescent lamp of a third embodiment of the present invention, shown in FIG. 本実施例のランプの構造は、第一の実施例のランプ構造に加えて、該内側電極5 Structure of the lamp of this embodiment, in addition to the lamp structure of the first embodiment, the inner electrode 5
の他端6を該放電容器1の他端12に埋め込んで固定したものである。 The other end 6 of those fixed embedded in the other end 12 of the discharge vessel 1. 放電容器1と内側電極5の中心軸を正確に合致させやすく、ばらつきの少ないランプが得られる、内側電極5の両端が固定されているので機械的な強度が大きいなどの利点が生じる。 The discharge vessel 1 and easily precisely made to match a central axis of the inner electrode 5, less variation ramp is obtained, the advantages of such mechanical strength is large it occurs because both ends of the inner electrode 5 is fixed.

【0026】本発明の第四の実施例の誘電体バリア放電蛍光ランプを、図4に示す。 [0026] The dielectric barrier discharge fluorescent lamp of the fourth embodiment of the present invention, shown in FIG. 本実施例のランプの構造は、第一の実施例のランプ構造に加えて、ランプの全長が300mmと長く、かつ、該内側電極5の他端6を該放電容器1の他端12に設けられた窪み7に挿入し、ゆるく保持したものであり、また、ゲッタ2が内側電極5 Structure of the lamp of this embodiment, in addition to the lamp structure of the first embodiment, the overall length of the lamp is as long as 300 mm, and, provided the other end 6 of the inner electrode 5 to the other end 12 of the discharge vessel 1 was recesses inserted 7 are those loosely held, also getter 2 inner electrode 5
の表面全体に塗布されている。 It is applied to the entire surface of the. 本実施例においては、ランプの製造が容易になり、さらに、内側電極5と放電容器1の熱膨張率が少々異なったとしても、その差が窪み7で吸収されるので、ランプの全長が300mmと長いにも係わらず、信頼性の高い誘電体バリア放電蛍光ランプが得られた。 In this embodiment, the lamp manufacturing is facilitated, further, also as a thermal expansion rate of the inner electrode 5 and the discharge vessel 1 is slightly different, since the difference is absorbed by the recesses 7, the overall length of the lamp 300mm If despite long, reliable dielectric barrier discharge fluorescent lamp was obtained.

【0027】本発明の第五の実施例の誘電体バリア放電蛍光ランプを、図5に示す。 [0027] The dielectric barrier discharge fluorescent lamps of the fifth embodiment of the present invention, shown in FIG. 本実施例のランプの構造は、第四の実施例のランプ構造における窪み7を、該誘電体バリア放電蛍光ランプの排気管の残部3と兼用させたもので、製造がさらに容易になり、かつ、安価になるという利点が生じる。 Structure of the lamp of this embodiment, a 7 depressions in the lamp structure of the fourth embodiment, in which was also used as the rest 3 of the exhaust pipe of the dielectric barrier discharge fluorescent lamp, manufactured becomes easier, and , advantage of cheaper occurs.

【0028】本発明の第六の実施例の誘電体バリア放電蛍光ランプの断面図を、図6に示す。 [0028] The cross-sectional view of a dielectric barrier discharge fluorescent lamp of the sixth embodiment of the present invention, shown in FIG. 本実施例のランプは、第五の実施例の該誘電体バリア放電蛍光ランプにおける放電容器1を中空楕円筒にした構成で、第五の実施例の利点に加えて、薄形の誘電体バリア放電蛍光ランプが得られるという利点が生じる。 Lamp of the present embodiment, the discharge vessel 1 in the dielectric barrier discharge fluorescent lamps of the fifth embodiment in the configuration in which the hollow elliptic cylinder, in addition to the advantages of the fifth embodiment, the thin dielectric barrier advantage that the discharge fluorescent lamp is obtained occurs.

【0029】本発明の第七の実施例のアパーチャ形誘電体バリア放電蛍光ランプの断面図を、図7に示す。 [0029] The cross section of the aperture-type dielectric barrier discharge fluorescent lamp of a seventh embodiment of the present invention, shown in FIG. 本実施例のランプにおいては、放電容器1の外周面の一部にアルミニウムからなる光反射板を兼ねた外側電極8が設けらており、放電容器1の内周面の一部に該外側電極8 In the lamp of the present embodiment, a portion of the outer peripheral surface of the discharge vessel 1 outer electrode 8 has et provided which also serves as a light reflection plate made of aluminum, the outer electrode at a part of the inner circumferential surface of the discharge vessel 1 8
と対接して蛍光体100が設けられており、該外側電極8と蛍光体100が設けられていない管壁部分が、光取り出し部分9になっている構成である。 And has a phosphor 100 is provided in contact pairs, the tube wall portion outer electrode 8 and the phosphor 100 is not provided, a configuration that is a light extracting part 9. この部分9が、 This portion 9,
ランプの長手方向に沿ってスリット状に伸びている。 It extends in a slit shape along the longitudinal direction of the lamp. 放電容器1内に設けられた内側電極5が細く、かつ、大きな電力を注入することが出来るので、コンパクトで光出力の大きなアパーチャ形の誘電体バリア放電蛍光ランプを得ることが出来る。 Thin inner electrode 5 arranged in the discharge vessel 1, and it is possible to inject a large amount of power, compact can be obtained a dielectric barrier discharge fluorescent lamp of a large aperture-shaped light output.

【0030】本発明の第八の実施例のアパーチャ形誘電体バリア放電蛍光ランプの断面図を、図8に示す。 [0030] The cross section of the aperture-type dielectric barrier discharge fluorescent lamp of the eighth embodiment of the present invention, shown in FIG. 本実施例のランプ構造は、第七の実施例のアパーチャ形誘電体バリア放電蛍光ランプの放電容器1を中空楕円筒にして、光取り出し部分9を長軸方向の管壁に設けた構成である。 Lamp structure of the present embodiment, the discharge vessel 1 of the aperture-type dielectric barrier discharge fluorescent lamp of the seventh embodiment in the hollow elliptic cylinder, there the light extraction portion 9 in the configuration provided in the longitudinal direction of the tube wall . 光取り出し部分9に対して放電空間を大きくとれるので、より高輝度のアパーチャ形誘電体バリア放電蛍光ランプが得られる。 Since the discharge space with respect to the optical extraction part 9 can be made large, higher brightness of the aperture-type dielectric barrier discharge fluorescent lamps are obtained.

【0031】本発明の第九の実施例のアパーチャ形誘電体バリア放電蛍光ランプは、第八の実施例のアパーチャ形誘電体バリア放電蛍光ランプの光取り出し部分9を放電容器1の短軸方向の管璧に設けた構成である。 The ninth embodiment of the aperture-type dielectric barrier discharge fluorescent lamp of the present invention, the eighth embodiment of the aperture-type dielectric barrier discharge fluorescent lamps of the light extraction minor axis direction of the section 9 discharge vessel 1 it is a configuration provided to Kan璧. 放電容器1の厚みに対して光取り出し部分9を大きくとれるという利点が生じる。 Advantage made large light extraction portion 9 occurs relative to the thickness of the discharge vessel 1. すなわち、より薄型のアパーチャ形誘電体バリア放電蛍光ランプが得られる。 In other words, thinner aperture type dielectric barrier discharge fluorescent lamps are obtained.

【0032】本発明の第十の実施例のアパーチャ形誘電体バリア放電蛍光ランプの断面図を、図9に示す。 [0032] The tenth sectional view of the aperture-type dielectric barrier discharge fluorescent lamp embodiment of the present invention, shown in FIG. 本実施例のランプにおいては、放電容器1の内周面の一部にピロ燐酸カルシウムからなる光反射膜10と、該光反射膜10の上に蛍光体100が設けられており、該光反射膜10が設けられていない管壁部分が、光取り出し部分9になっており、さらに、放電容器1の外面全周にシームレスの円筒状金属網からなる外側電極4を設けた構成である。 In the lamp of the present embodiment, the light reflection film 10 made of calcium pyrophosphate in a part of the inner peripheral surface of the discharge vessel 1, the phosphor 100 is provided on the light reflection film 10, the light reflection wall portion where the film 10 not provided, have become light extracting portion 9, further a structure in which an outer electrode 4 made of seamless cylindrical metal net the entire circumference the outer surface of the discharge vessel 1. すなわち、外側電極4の光取り出し部分9の外面に存在する部分は、該外側電極と電気的に接続され、 That is, the portion present on the outer surface of the light extraction portion 9 of the outer electrode 4 is outer electrode electrically connected,
かつ、網であるから光透過性である部材に相当し、従って、誘電体バリア放電によって発生した電磁雑音電波が光取り出し部分9から漏れるのを防止出来るという利点が生じる。 And corresponds to a member which is light transmissive because it is the network, therefore, arises the advantage that can be prevented from leaking from the electromagnetic noise electric wave is light extraction portion 9 generated by the dielectric barrier discharge.

【0033】本発明の第十一の実施例のアパーチャ形誘電体バリア放電蛍光ランプの断面図を、図10に示す。 [0033] The cross section of the aperture-type dielectric barrier discharge fluorescent lamp of the eleventh embodiment of the present invention, shown in FIG. 10.
本実施例のランプの構造は、内側電極5を該放電容器1 Structure of the lamp of this embodiment, the discharge vessel 1 inner electrode 5
の中心軸Xよりも該光取り出し部分9に接近させて設けたこと以外は第七の実施例と同一構造である。 Except that the central axis X of the provided is brought closer to the light extraction portion 9 is the same structure as the seventh embodiment. このような構造によって、該外側電極と該内側電極との間の距離が長くなるので、ランプへの入力が大きくなり、従って、光出力が大きくなるという利点が生じる。 Such structure, the distance between the outer electrode and the inner electrode is longer, the input to the lamp is increased, therefore, the advantage that the light output becomes large.

【0034】本発明の第十二の実施例のアパーチャ形誘電体バリア放電蛍光ランプの断面図を、図11に示す。 [0034] The cross-sectional view of a twelfth embodiment of the aperture-type dielectric barrier discharge fluorescent lamp of the present invention, shown in FIG. 11.
本実施例のランプの構造は、内側電極5を該放電容器1 Structure of the lamp of this embodiment, the discharge vessel 1 inner electrode 5
の中心軸Xよりも該光取り出し部分9から遠ざけて設けたこと以外は第七の実施例と同一構造である。 Except that the central axis X of the provided away from the light take-out portion 9 is the same structure as the seventh embodiment. このような構造によって、該外側電極と該内側電極との間の距離が短くなったので、放電始動電圧が低下し、かつ、該内側電極5が該光取り出し部分9から離れているので、光の取り出し効率が増大し、高効率であるという利点が生じる。 Such structure, the distance between the outer electrode and the inner electrode is shortened, the discharge starting voltage is lowered, and, since the inner electrode 5 is away from the light take-out portion 9, the light the extraction efficiency is increased, the advantage that a high efficiency.

【0035】本発明の第十三の実施例の誘電体バリア放電蛍光ランプは、第一の実施例の誘電体バリア放電蛍光ランプにおける内側電極5を放電容器1の中心軸より1.5mmずらして設置した構成である。 The dielectric barrier discharge fluorescent lamps thirteenth embodiment of the present invention, the inner electrode 5 of the dielectric barrier discharge fluorescent lamp of the first embodiment is shifted 1.5mm from the center axis of the discharge vessel 1 it is installed configuration. この実施例においては放電開始電圧が低くなるという利点が生じる。 Advantage that the discharge starting voltage is lowered occurs in this embodiment.

【0036】 [0036]

【発明の効果】上記したように、本発明によれば、コンパクトで、光出力が十分に大きく、かつ、安定である誘電体バリア放電蛍光ランプをを提供できる。 [Effect of the Invention] As described above, according to the present invention, a compact, light output is sufficiently large, and can provide a dielectric barrier discharge fluorescent lamp is stable.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の誘電体バリア放電蛍光ランプの実施例の説明図である。 1 is a schematic view of another preferred embodiment of the dielectric barrier discharge fluorescent lamp of the present invention.

【図2】本発明の誘電体バリア放電蛍光ランプの他の実施例の説明図である。 FIG. 2 is an explanatory view of another embodiment of the dielectric barrier discharge fluorescent lamp of the present invention.

【図3】本発明の誘電体バリア放電蛍光ランプの他の実施例の説明図である。 3 is an explanatory view of another embodiment of the dielectric barrier discharge fluorescent lamp of the present invention.

【図4】本発明の誘電体バリア放電蛍光ランプの他の実施例の説明図である。 4 is an explanatory view of another embodiment of the dielectric barrier discharge fluorescent lamp of the present invention.

【図5】本発明の誘電体バリア放電蛍光ランプの他の実施例の説明図である。 5 is an explanatory view of another embodiment of the dielectric barrier discharge fluorescent lamp of the present invention.

【図6】本発明の誘電体バリア放電蛍光ランプの他の実施例の説明図であって、該ランプの長手方向に垂直な断面を示す。 6 is an explanatory view of another embodiment of the dielectric barrier discharge fluorescent lamp of the present invention, showing a cross section perpendicular to the longitudinal direction of the lamp.

【図7】本発明の誘電体バリア放電蛍光ランプの他の実施例の説明図であって、該ランプの長手方向に垂直な断面を示す。 [7] an explanatory view of another embodiment of the dielectric barrier discharge fluorescent lamp of the present invention, showing a cross section perpendicular to the longitudinal direction of the lamp.

【図8】本発明の誘電体バリア放電蛍光ランプの他の実施例の説明図であって、該ランプの長手方向に垂直な断面を示す。 8 is an explanatory view of another embodiment of the dielectric barrier discharge fluorescent lamp of the present invention, showing a cross section perpendicular to the longitudinal direction of the lamp.

【図9】本発明の誘電体バリア放電蛍光ランプの他の実施例の説明図であって、該ランプの長手方向に垂直な断面を示す。 9 is an explanatory view of another embodiment of the dielectric barrier discharge fluorescent lamp of the present invention, showing a cross section perpendicular to the longitudinal direction of the lamp.

【図10】本発明の誘電体バリア放電蛍光ランプの他の実施例の説明図であって、該ランプの長手方向に垂直な断面を示す。 [Figure 10] is an explanatory view of another embodiment of the dielectric barrier discharge fluorescent lamp of the present invention, showing a cross section perpendicular to the longitudinal direction of the lamp.

【図11】本発明の誘電体バリア放電蛍光ランプの他の実施例の説明図であって、該ランプの長手方向に垂直な断面を示す。 11 is an explanatory view of another embodiment of the dielectric barrier discharge fluorescent lamp of the present invention, showing a cross section perpendicular to the longitudinal direction of the lamp.

【図12】従来の誘電体バリア放電蛍光ランプの説明図である。 12 is an explanatory view of a conventional dielectric barrier discharge fluorescent lamps.

【符号の説明】 DESCRIPTION OF SYMBOLS

1 放電容器 2 ゲッタ 3 排気管の残部 4 外側電極 5 内側電極 6 内側電極の他端 7 窪み 8 外側電極 9 光取り出し部分 10 光反射膜 100 蛍光体 1 the discharge vessel 2 getter 3 other end 7 recess 8 outer electrode 9 light of the remainder 4 outer electrode 5 inside the electrode 6 the inner electrode of the exhaust pipe extraction portion 10 the light reflection film 100 phosphor

Claims (14)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 光透過性で、細長い管状で、誘電体バリア放電の誘電体を兼ねた放電容器と、該放電容器の内面の少なくとも一部に設けた蛍光体塗布膜と、該放電容器の外面の少なくとも一部に設けた誘電体バリア放電を行うための外側電極と、該放電容器の内側に配置された、 In 1. A light transmissive, an elongated tubular, and the discharge vessel which also serves as a dielectric of the dielectric barrier discharge, and a phosphor coating film provided on at least a portion of the inner surface of the discharge vessel, the discharge vessel and the outer electrode for performing dielectric barrier discharge which is provided on at least a portion of the outer surface, which is arranged inside the discharge vessel,
    長さLと外径Dの比の値L/Dが30以上の細長い内側電極と、該誘電体と内側電極との間に充填された該誘電体バリア放電によってエキシマ分子を形成する放電用ガスからなる誘電体バリア放電を利用した概略管状であることを特徴とする誘電体バリア放電蛍光ランプ。 Elongated inner electrode of values ​​L / D ratio of 30 or more in length L and outer diameter D, a discharge gas which forms excimer molecules by dielectric barrier discharge, which is filled between the dielectric body and the inner electrode dielectric barrier discharge fluorescent lamp, which is a schematic tubular using a dielectric barrier discharge consisting.
  2. 【請求項2】 該内側電極が細長い金属丸棒あるいは細長い金属円管でありかつ放電用ガスに接触していることを特徴とする請求項1に記載の誘電体バリア放電蛍光ランプ。 Wherein the inner electrode is an elongated metal rod or elongated metal circular pipe and a dielectric barrier discharge fluorescent lamp according to claim 1 that is characterized in that in contact with the discharge gas.
  3. 【請求項3】 該内側電極にゲッタを取り付けたことを特徴とした請求項1もしくは請求項2に記載の誘電体バリア放電ランプ。 3. A dielectric barrier discharge lamp according to claim 1 or claim 2 characterized in that mounted getters inner electrode.
  4. 【請求項4】 該内側電極の一端は該放電容器の一端に気密に取り付けられかつ放電容器の外部に引き出されており、該内側電極の他端は該放電容器内にあるように構成したことを特徴とした請求項1もしくは請求項2に記載の誘電体バリア放電蛍光ランプ。 4. One end of the inner electrode is drawn out of the attached and the discharge vessel hermetically to one end of the discharge vessel, that the other end of the inner electrode is constructed as in the discharge vessel dielectric barrier discharge fluorescent lamp according to claim 1 or claim 2 and characterized.
  5. 【請求項5】 該内側電極の他端が該放電容器の他端に固定されている構成にしたことを特徴とした請求項4に記載の誘電体バリア放電蛍光ランプ。 5. A dielectric barrier discharge fluorescent lamp according to claim 4 in which the other end of the inner electrode is characterized in that the arrangement is fixed to the other end of the discharge vessel.
  6. 【請求項6】 該内側電極の他端が該放電容器の他端にゆるく保持されている構成にしたことを特徴とした請求項4に記載の誘電体バリア放電蛍光ランプ。 6. The other end of the inner electrode of claim 4 which is characterized in that a configuration which is loosely held to the other end of the discharge vessel dielectric barrier discharge fluorescent lamps.
  7. 【請求項7】 該放電容器の他端に排気管の残部があり、該内側電極の他端が該残部にゆるく保持されてなることを特徴とした請求項6に記載の誘電体バリア放電蛍光ランプ。 7. There is the remainder of the exhaust pipe to the other end of the discharge vessel, a dielectric barrier discharge fluorescent according to claim 6, the other end of the inner electrode is characterized by comprising loosely retained in said residue portion lamp.
  8. 【請求項8】 該放電容器の長手方向に沿ってスリット状に光を取り出す部分を有するアパーチャ形蛍光ランプであることを特徴とした請求項1から請求項7に記載の誘電体バリア放電蛍光ランプ。 8. according to claim 7 claim 1 characterized in that a aperture fluorescent lamp having a portion for taking out the light in a slit form along the longitudinal direction of the discharge vessel dielectric barrier discharge fluorescent lamps .
  9. 【請求項9】 該放電容器のスリット状の光取り出し部分の外面に、該外側電極と電気的に接続されかつ光透過性である部材を設けた構成にしたことを特徴とした請求項8に記載の誘電体バリア放電蛍光ランプ。 9. A exterior surface of the slit-like light extraction portion of the discharge vessel, to claim 8 characterized in that the structure in which a member is the outer electrode and electrically connected to and optically transparent dielectric barrier discharge fluorescent lamp according.
  10. 【請求項10】 該放電容器のスリット状の光取り出し部分と対向する部分の外面に外側電極を設け、かつ、該内側電極を該放電容器の中心軸よりも光取り出し部分に接近させて設けた構成にしたことを特徴とした請求項8 10. The outer electrode provided on the outer surface of the slit-like light extraction portion facing the portion of the discharge vessel, and is provided with a inner electrode is brought close to the light extraction portion of the center axis of the discharge vessel claim 8 is characterized in that the arrangement
    に記載の誘電体バリア放電蛍光ランプ。 Dielectric barrier discharge fluorescent lamp according to.
  11. 【請求項11】 該放電容器のスリット状の光取り出し部分と対向する部分の外面に外側電極を設け、かつ、該内側電極を該放電容器の中心軸よりも光取り出し部分から遠ざけて設けた構成にしたことを特徴とした請求項8 11. The outer electrode provided on the outer surface of the slit-like light extraction portion facing the portion of the discharge vessel and provided with inner electrodes away from the light extraction portion of the center axis of the discharge vessel construction 8. it was characterized by you
    に記載の誘電体バリア放電蛍光ランプ。 Dielectric barrier discharge fluorescent lamp according to.
  12. 【請求項12】 該放電容器が円筒であり、その内径をRとした時、R/Dの値を3から40の範囲に規定したことを特徴とした請求項2に記載の誘電体バリア放電蛍光ランプ。 12. a discharge vessel is cylindrical, then the inner diameter was R, dielectric barrier discharge according to claim 2 which is characterized by defining the value of R / D in the range of 3 40 fluorescent lamp.
  13. 【請求項13】 該外側電極を該放電容器の外面の全周にわたって設け、かつ、該内側電極の中心軸と該放電容器の中心軸との距離を該内側電極の外径以上離して設置した構成にしたことを特徴とした請求項12に記載の誘電体バリア放電蛍光ランプ。 13. A outer electrode provided over the entire circumference of the outer surface of the discharge vessel, and was placed the distance between the central axis of the discharge vessel of the inner electrode apart equal to or greater than the outer diameter of the inner electrode dielectric barrier discharge fluorescent lamp according to claim 12, characterized in that the arrangement.
  14. 【請求項14】 該外側電極がシームレスの円筒状金網からなる事を特徴とした請求項1から請求項8、請求項12および請求項13に記載の誘電体バリア放電蛍光ランプ。 14. outer electrode claims 1 to 8 which is characterized by comprising a seamless cylindrical metal wire net, a dielectric barrier discharge fluorescent lamp according to claim 12 and claim 13.
JP8265794A 1994-03-30 1994-03-30 Dielectric barrier discharge fluorescent lamps Expired - Fee Related JP3211548B2 (en)

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Cited By (75)

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