JPH0778593A - Dielectric barrier discharge lamp - Google Patents

Dielectric barrier discharge lamp

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Publication number
JPH0778593A
JPH0778593A JP24609893A JP24609893A JPH0778593A JP H0778593 A JPH0778593 A JP H0778593A JP 24609893 A JP24609893 A JP 24609893A JP 24609893 A JP24609893 A JP 24609893A JP H0778593 A JPH0778593 A JP H0778593A
Authority
JP
Japan
Prior art keywords
dielectric barrier
barrier discharge
thin film
discharge lamp
dielectric
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.)
Granted
Application number
JP24609893A
Other languages
Japanese (ja)
Other versions
JP3269213B2 (en
Inventor
Hiromitsu Matsuno
博光 松野
Ryushi Igarashi
龍志 五十嵐
Tatsumi Hiramoto
立躬 平本
Kunio Kasagi
邦雄 笠木
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.)
Ushio Denki KK
Ushio Inc
Original Assignee
Ushio Denki KK
Ushio Inc
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
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Application filed by Ushio Denki KK, Ushio Inc filed Critical Ushio Denki KK
Priority to JP24609893A priority Critical patent/JP3269213B2/en
Publication of JPH0778593A publication Critical patent/JPH0778593A/en
Application granted granted Critical
Publication of JP3269213B2 publication Critical patent/JP3269213B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PURPOSE:To provide a dielectric barrier discharge lamp which excels in the life time characteristics while the merit of a large degree of freedom in the shape of a discharge vessel is maintained by furnishing a member to protect a dielectric substance thin film chemically and mechanically. CONSTITUTION:A discharge vessel 1 made of crystal glass is composed of an inner tube 2 and outer tube 3, and inside thereof a discharge space 8 is formed, wherein the outer tube 3 is equipped at its outer surface with a conductive mesh-form electrode 4 while the inner tube 2 is fitted with a thin film electrode 5 of A on the outside surface. Xe gas as a discharging gas is encapsulated in the discharge space 8 formed between the inner tube 2 and outer tube 3, and electric discharge is actuated with a high frequency power supply 8 and ultraviolet rays of 200nm and under in the wavelength are emitted. The thin film electrode 5 of Al is made of silicone rubber, fluororesin, intensifier, nitride, fluoride, etc., or covered with a protection film 9 of a metal material such as Pt, Pd, Au, Ag, Ni. Thus a dielectric barrier discharge lamp is achieved whose thin film electrode 5 is free from risk of being damaged by a corrosive discharge gas and which operates for a long period of time and excels in the lifetime characteristics.

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、例えば、塗料の硬化、
表面洗浄、殺菌等に使用される紫外線光源の改良に係
り、特に、誘電体バリヤ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
ゆる誘電体バリヤ放電ランプの改良に関する。
BACKGROUND OF THE INVENTION The present invention relates to, for example, the curing of paints,
The present invention relates to improvement of an ultraviolet light source used for surface cleaning, sterilization, etc., and more particularly, to improvement of a so-called dielectric barrier discharge lamp which forms excimer molecules by dielectric barrier discharge and utilizes light emitted from the excimer molecules.

【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2−7353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、誘電体バリヤ放電(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月再版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
放射される光を取り出す放射器、すなわち誘電体バリヤ
放電ランプについて記載されている。また、日本国公開
特許公報平2ー7353号には、誘電体バリヤ放電ラン
プの放電容器に紫外線を別の波長の光に変換するルミネ
ッセンス(例えば蛍光体)を設けた放射器について記載
されている。すなわち、石英ガラス板のような光透過性
の誘電体2枚を対向して設けて放電空間を形成し、前記
放電空間に稀ガス、重水素あるいは稀ガスとハロゲンの
混合ガス等を充填し、前記2個の誘電体の前記放電空間
に対向していない面に電極を設け、前記電極に交流電圧
を印加して前記放電空間に無声放電を発生させて紫外線
を放射させる構成・方式が知られている。前記誘電体と
しては、石英ガラスの他に、サファイア、フッ化マグネ
シウム、フッ化カルシウムなどが知られている。上記の
ような誘電体バリヤ放電ランプは、放電容器の形状の自
由度が大きい、放電空間中に導電性電極が露出していな
いのでハロゲンなどの腐食性ガスを使用できるなど、従
来の低圧水銀放電ランプや高圧アーク放電ランプには無
い種々の特長を有しているため有用である。しかし、上
記のような誘電体バリヤ放電ランプは、寿命特性が必ず
しも十分では無いという問題があった。
2. Description of the Related Art As a technique related to the present invention, there is, for example, Japanese Patent Laid-Open Publication No. Hei 2-7353, in which a discharge vessel is filled with a discharge gas for forming excimer molecules, Barrier discharge (also known as ozonizer discharge or silent discharge. See the revised edition “Discharge Handbook” published by The Institute of Electrical Engineers of Japan, June 2001, Reprint 7th edition, page 263) forms excimer molecules, and the light emitted from the excimer molecules is extracted. A radiator, or dielectric barrier discharge lamp, is described. Further, Japanese Laid-Open Patent Publication No. 2-7353 describes a radiator provided with a luminescence (for example, a phosphor) for converting ultraviolet rays into light of another wavelength in a discharge vessel of a dielectric barrier discharge lamp. . That is, two light-transmitting dielectrics such as a quartz glass plate are provided to face each other to form a discharge space, and the discharge space is filled with a rare gas, deuterium or a mixed gas of a rare gas and a halogen, There is known a configuration / method in which electrodes are provided on surfaces of the two dielectrics that do not face the discharge space, and an AC voltage is applied to the electrodes to generate silent discharge in the discharge space and radiate ultraviolet rays. ing. Other than quartz glass, sapphire, magnesium fluoride, calcium fluoride and the like are known as the dielectric. The above dielectric barrier discharge lamp has a large degree of freedom in the shape of the discharge vessel, and since the conductive electrodes are not exposed in the discharge space, corrosive gases such as halogen can be used. It is useful because it has various features not found in lamps and high-pressure arc discharge lamps. However, the above dielectric barrier discharge lamp has a problem that the life characteristics are not always sufficient.

【0003】[0003]

【発明が解決しようとする課題】本発明の課題は、放電
容器の形状の自由度が大きいという誘電体バリヤ放電ラ
ンプの利点を保った状態で、寿命特性が十分である高性
能の誘電体バリヤ放電ランプを提供することである。
SUMMARY OF THE INVENTION An object of the present invention is to provide a high-performance dielectric barrier which has a sufficient life characteristic while maintaining the advantage of the dielectric barrier discharge lamp that the discharge vessel has a large degree of freedom in its shape. It is to provide a discharge lamp.

【0004】[0004]

【課題を解決するための手段】本発明の目的は、少なく
とも放電容器に誘電体バリヤ放電によってエキシマ分子
を形成する放電用ガスが充填され、該エキシマ分子から
放射される光を取り出す窓部材を有し、該放電容器の少
なくとも一部は該誘電体バリヤ放電の誘電体であり、か
つ、放電容器と誘電体バリヤ放電の誘電体とを兼ねてい
る部分の誘電体の放電空間の反対側の表面に設けられた
導電性薄膜からなる電極を含む誘電体バリヤ放電ランプ
において、該導電性薄膜を化学的・機械的に保護するた
めの部材を設けることによって達成される。また、該導
電性薄膜を保護するための部材を、シリコンゴム、フッ
素樹脂、酸化物、窒化物およびフッ化物の中から選ばれ
た少なくとも一種で構成すること、あるいは、該導電性
薄膜をアルミニウムで構成し、かつ、該導電性薄膜を保
護するための部材を導電性物質で構成することにより、
本発明の目的はよりいっそう達成される。さらに、該導
電性薄膜を保護するための部材を、白金、パラジウム、
金、銀、ニッケルの中から選ばれた少なくとも一種で構
成することにより、本発明の目的はよりいっそう達成さ
れる。該放電容器を概略円筒状に構成した場合や、ある
いは、該エキシマ分子から放射される光が波長200n
m以下の紫外線になるような場合には上記の構成が良
い。
SUMMARY OF THE INVENTION An object of the present invention is to provide at least a discharge vessel with a discharge gas for forming excimer molecules by dielectric barrier discharge, and to provide a window member for taking out light emitted from the excimer molecules. At least a part of the discharge container is a dielectric for the dielectric barrier discharge, and the surface of the part of the dielectric that is also the discharge container and the dielectric for the dielectric barrier discharge is opposite to the discharge space. In a dielectric barrier discharge lamp including an electrode made of a conductive thin film provided in the above, it is achieved by providing a member for chemically and mechanically protecting the conductive thin film. Further, the member for protecting the conductive thin film is made of at least one selected from silicon rubber, fluororesin, oxide, nitride and fluoride, or the conductive thin film is made of aluminum. By configuring, and by configuring the member for protecting the conductive thin film with a conductive substance,
The objects of the invention are even more achieved. Further, a member for protecting the conductive thin film is platinum, palladium,
The object of the present invention is further achieved by comprising at least one selected from gold, silver and nickel. In the case where the discharge container is formed into a substantially cylindrical shape, or the light emitted from the excimer molecule has a wavelength of 200 n.
The above configuration is preferable in the case of ultraviolet rays of m or less.

【0005】[0005]

【作用】少なくとも放電容器に誘電体バリヤ放電によっ
てエキシマ分子を形成する放電用ガスが充填され、該エ
キシマ分子から放射される光を取り出す窓部材を有し、
該放電容器の少なくとも一部は該誘電体バリヤ放電の誘
電体であり、かつ、放電容器と誘電体バリヤ放電の誘電
体とを兼ねている部分の該誘電体の放電空間の反対側の
表面に誘電体バリヤ放電の電極を設けた誘電体バリヤ放
電ランプにおいては、放電容器と誘電体バリヤ放電の誘
電体とを兼ねている部分の該誘電体と該電極との間で放
電が生じないようにするために、該電極と該誘電体部分
とは密着させる必要がある。そこで、該誘電体部分上に
蒸着などによって直接導電性薄膜を形成して、これを該
電極として使用している。本発明者等は、上記の誘電体
バリヤ放電ランプの寿命特性の改良を行うなかで、該薄
膜状の電極に僅かでも損傷が生じると、その部分の電界
が強くなって放電が集中するため、加速的に電極の損傷
が進行して、ランプの寿命が短くなることを発見した。
上記した現象は、該電極が薄膜状であるので損傷しやす
いことが一つの原因であるが、損傷した薄膜のエッジ部
分に誘電体バリヤ放電が集中しやすいことが本質的な原
因であり、誘電体バリヤ放電ランプ独特の現象である。
At least the discharge container is filled with a discharge gas for forming excimer molecules by dielectric barrier discharge, and has a window member for extracting light emitted from the excimer molecules.
At least a part of the discharge container is a dielectric for the dielectric barrier discharge, and on a surface of the part which also serves as the discharge container and the dielectric for the dielectric barrier discharge, on the opposite side of the discharge space. In a dielectric barrier discharge lamp provided with an electrode for dielectric barrier discharge, in order to prevent discharge from occurring between the dielectric and the electrode in the portion that also serves as the discharge container and the dielectric for dielectric barrier discharge. In order to do so, it is necessary to bring the electrode and the dielectric portion into close contact with each other. Therefore, a conductive thin film is directly formed on the dielectric portion by vapor deposition or the like, and this is used as the electrode. The present inventors, while improving the life characteristics of the above dielectric barrier discharge lamp, if even a slight damage to the thin-film electrode, the electric field in that portion is strengthened and the discharge is concentrated, It has been discovered that the damage to the electrodes progresses at an accelerated rate and the lamp life is shortened.
One of the causes of the above-mentioned phenomenon is that the electrode is in the form of a thin film and is therefore easily damaged, but the essential cause is that the dielectric barrier discharge is likely to concentrate at the edge of the damaged thin film. This is a phenomenon unique to body barrier discharge lamps.

【0006】該導電性薄膜をおおって化学的・機械的に
保護するための部材を設けると、ランプの組み立て中あ
るいは動作中に該導電性薄膜が化学的・機械的に損傷さ
れることがなく、従って長寿命の誘電体バリヤ放電ラン
プが得られる。
By providing a member for chemically and mechanically protecting the conductive thin film, the conductive thin film is not chemically or mechanically damaged during the assembly or operation of the lamp. Therefore, a long-life dielectric barrier discharge lamp is obtained.

【0007】該導電性薄膜を保護するための部材を、シ
リコンゴム、フッ素樹脂、酸化物、窒化物およびフッ化
物の中から選ばれ少なくとも一種で構成すると、これら
の材料は、機械的な強度が十分であり、かつ、酸素ある
いはランプからの紫外線によって生じたオゾンなどの活
性物質に対して化学的に安定であり、さらに、これらの
材料は電気絶縁物なので導電性薄膜電極の空気などの雰
囲気ガス中での放電を防止するので、より長寿命の誘電
体バリヤ放電ランプが得られる。
When the member for protecting the conductive thin film is made of at least one selected from silicon rubber, fluororesin, oxides, nitrides and fluorides, these materials have mechanical strength. Sufficient and chemically stable against active substances such as oxygen or ozone generated by ultraviolet rays from lamps. Furthermore, since these materials are electrical insulators, atmospheric gas such as air of the conductive thin film electrode. Since the internal discharge is prevented, a longer life dielectric barrier discharge lamp is obtained.

【0008】該導電性薄膜を越えて設けられた該部材の
端部においては、該部材にランプからの紫外線が照射さ
れる。従って、該部材として有機物を使用すると、紫外
線によって端部が劣化しやすい。該導電性薄膜に接して
もうける該部材を、酸化物、窒化物の中から選ばれた少
なくとも一種にすると、これらの物質は紫外線に耐性が
あるので、寿命中の劣化が少ない。しかし、これらの物
質は付着強度がやや弱いので、これらの物質の上にさら
にシリコンゴム等の有機物からなる保護部材を設ける
と、より長寿命の誘電体バリヤ放電ランプが得られる。
また、該導電性薄膜の損傷の主原因の一つは、ランプか
ら放射された紫外線が空気中にある該導電性薄膜に直接
作用したり、あるいは、紫外線が空気中の酸素からオゾ
ンを生成し、このオゾンが該導電性薄膜に作用するな
ど、紫外線が原因である。該導電性薄膜に接してもうけ
る該部材を、酸化物、窒化物の中から選ばれた少なくと
も一種にして、これらの物質を、導電性薄膜上に加え
て、ランプの端部にまで塗布して、余分な紫外線を遮断
すると、より長寿命の誘電体バリヤ放電ランプが得られ
る。
At the end portion of the member provided over the conductive thin film, the member is irradiated with ultraviolet rays from a lamp. Therefore, when an organic material is used as the member, the end portion is easily deteriorated by the ultraviolet rays. When the member provided in contact with the conductive thin film is made of at least one selected from oxides and nitrides, these substances have resistance to ultraviolet rays, and therefore deterioration during life is small. However, since these substances have a slightly weaker adhesive strength, a dielectric barrier discharge lamp having a longer life can be obtained by further providing a protective member made of an organic substance such as silicon rubber on these substances.
One of the main causes of damage to the conductive thin film is that the ultraviolet rays emitted from the lamp directly act on the conductive thin film in the air, or the ultraviolet rays generate ozone from oxygen in the air. This is due to ultraviolet rays, such as the ozone acting on the conductive thin film. The member to be placed in contact with the conductive thin film is made at least one selected from oxides and nitrides, and these substances are added onto the conductive thin film and applied to the end of the lamp. By shutting off excess ultraviolet light, a longer life dielectric barrier discharge lamp is obtained.

【0009】アルコール型、オキシム型、酢酸型等のシ
リコンゴムは、取扱が容易であるという特徴が有るが、
誘電体バリヤ放電ランプにこれらのシリコンゴムを使用
した場合には、僅かな未硬化成分がランプの点灯中に蒸
発し、ランプからの紫外線によって分解され、酸化シリ
コンの粉末をランプ表面に析出すると言う問題が生じる
ことが判明した。未硬化成分が完全に無くなるまでに
は、即ち、完全に硬化するためには少なくとも数日間と
いう長時間を必要とする。該シリコンゴムを付加型(加
熱すると硬化するタイプのシリコンゴムであって、例え
ば信越化学工業(株)製品名KE1830)にすると、
硬化時に副生する酢酸などの化合物がなく、かつ、加熱
によって短時間で硬化できるので、未硬化成分を極端に
少なくすることが可能になり、従って、酸化シリコンの
粉末がランプ表面に析出するすることを防止でき、高品
質の誘電体バリヤ放電ランプを得ることが出来る。
Silicone rubbers of alcohol type, oxime type, acetic acid type and the like are characterized in that they are easy to handle.
When these silicone rubbers are used in dielectric barrier discharge lamps, a small amount of uncured components evaporates during lamp operation and is decomposed by ultraviolet rays from the lamps, resulting in the deposition of silicon oxide powder on the lamp surface. It turned out to be a problem. It takes a long time of at least several days until the uncured components are completely eliminated, that is, to be completely cured. If the silicone rubber is an addition type (a type of silicone rubber that cures when heated, for example, Shin-Etsu Chemical Co., Ltd. product name KE1830),
Since there is no acetic acid or other compound that is produced as a by-product during curing, and it can be cured in a short time by heating, it is possible to reduce the amount of uncured components to an extremely low level, and therefore silicon oxide powder is deposited on the lamp surface. And a high-quality dielectric barrier discharge lamp can be obtained.

【0010】また、該導電性薄膜をアルミニウムで構成
すると、アルミニウムは短波長の紫外線を効率よく反射
するので高効率の誘電体バリヤ放電ランプが得られると
いう特徴が生じるが、アルミニウムは表面が酸化されや
すいため電極リード線が接続しにくく、ランプの点灯中
にアルミニウム電極と電極リード線の間に接続不良が発
生し、この部分で異常放電が生じるため、ランプの寿命
が短くなる。アルミニウムからなる導電性薄膜電極を保
護するための部材を導電性物質で構成すると、電極と電
極リード線が接続が高信頼化出来、従って、長寿命の誘
電体バリヤ放電ランプが得られる。さらに、該導電性薄
膜を保護するための導電性部材を、白金、パラジウム、
金、銀、ニッケルの中から選ばれ少なくとも一種で構成
すると、これらの金属は酸素あるいはランプからの紫外
線によって生じたオゾンなどの活性物質に対して化学的
に安定であり、さらに、これらの材料と銅、ステンレス
線などからなる電極リード線との接続が容易なので、電
極と電極リード線が接続が高信頼化出来、従って、長寿
命の誘電体バリヤ放電ランプが得られる。
When the conductive thin film is made of aluminum, aluminum efficiently reflects ultraviolet rays having a short wavelength, so that a highly efficient dielectric barrier discharge lamp can be obtained. However, the surface of aluminum is oxidized. Since it is easy to connect the electrode lead wire, it is difficult to connect the aluminum electrode and the electrode lead wire during lighting of the lamp, and abnormal discharge occurs at this portion, which shortens the life of the lamp. If the member for protecting the conductive thin film electrode made of aluminum is made of a conductive material, the connection between the electrode and the electrode lead wire can be made highly reliable, and therefore a long-life dielectric barrier discharge lamp can be obtained. Further, a conductive member for protecting the conductive thin film, platinum, palladium,
When composed of at least one selected from gold, silver, and nickel, these metals are chemically stable against active substances such as oxygen or ozone generated by ultraviolet rays from a lamp, and further, these materials and Since the connection with the electrode lead wire made of copper, stainless steel wire or the like is easy, the connection between the electrode and the electrode lead wire can be made highly reliable, and therefore a long-life dielectric barrier discharge lamp can be obtained.

【0011】該エキシマ分子から放射される光が波長2
00nm以下の紫外線である誘電体バリヤ放電ランプ
は、電極を損傷させる活性物質を発生させることが多い
が、上記した本発明を適用すると損傷防止効果が発揮さ
れるので好都合である。また、中空円筒状の形状の誘電
体には、その外面でも、内面でも、導電性薄膜電極を設
けにくく、従って、誘電体から導電性薄膜が剥がれやす
い。該誘電体バリヤ放電ランプを概略中空円筒状である
ことを特徴とした誘電体バリヤ放電ランプに上記本発明
を適用すると、誘電体バリヤ放電ランプの特徴である放
電容器の形状の自由度が大きいという利点を保ったまま
で、長寿命の誘電体バリヤ放電ランプを得ることが出来
る。
The light emitted from the excimer molecule has a wavelength of 2
A dielectric barrier discharge lamp that emits ultraviolet rays having a wavelength of 00 nm or less often generates an active substance that damages the electrodes, but it is convenient to apply the above-described present invention because it exerts a damage prevention effect. Moreover, it is difficult to provide the conductive thin film electrode on the outer surface and the inner surface of the hollow cylindrical dielectric, and therefore the conductive thin film is easily peeled off from the dielectric. When the present invention is applied to a dielectric barrier discharge lamp characterized by having a substantially hollow cylindrical shape, the dielectric barrier discharge lamp has a large degree of freedom in the shape of the discharge vessel, which is a feature of the dielectric barrier discharge lamp. It is possible to obtain a long-life dielectric barrier discharge lamp while maintaining the advantages.

【0012】[0012]

【実施例】本発明の第1の実施例である同軸円筒形誘電
体バリヤ放電ランプの概略図を、図1に示す。放電容器
1は全長約150mmの合成石英ガラス製で、外径14
mmの内側管2、内径約24mm、肉厚1mmの外側管
3を同軸に配置して中空円筒状の放電空間8を形成した
ものである。外側管3は誘電体バリヤ放電の誘電体バリ
ヤと光取り出し窓部材を兼用しており、その外面に光を
透過する導電性網からなる電極4が設けられている。内
側管4の外面に光の反射板と誘電体バリヤ放電の電極を
兼ねたアルミニウム薄膜電極5が設けられている。従っ
て、放電ギャップは5mmである。放電容器1の一端に
設けられたゲッタ収容室6にバリウムゲッタ7が設けら
れている。放電容器の放電空間8に放電用ガスとして3
50トールのキセノンガスを充填した。該アルミニウム
薄膜電極5を、付加型のシリコンゴム9で、厚さ0.5
から1mmで被覆し、120℃で1時間加熱して硬化さ
せた。該誘電体バリヤ放電ランプの表面積1平方センチ
メートルあたりの入力電力を0.4ワットとして電源1
0で点灯した。その結果、172nmに最大値を有する
紫外線が効率よく放射され、かつ、シリコンゴムに起因
する酸化シリコンの発生もなく、かつ、172nmに最
大値を有する紫外線によって発生したオゾンによって該
アルミニウム薄膜電極5が損傷されることがなく、従っ
て、放電容器の形状の自由度が大きいという誘電体バリ
ヤ放電ランプの利点を保った状態で、寿命特性が十分で
ある高性能の誘電体バリヤ放電ランプが得られた。アル
ミニウムは真空紫外線を効率よく反射するので、172
nmに最大値を有する紫外線の取り出し効率が大きくな
り、特に、高効率が達成された。
1 is a schematic view of a coaxial cylindrical dielectric barrier discharge lamp according to a first embodiment of the present invention. The discharge vessel 1 is made of synthetic quartz glass with a total length of about 150 mm and has an outer diameter of 14 mm.
A hollow cylindrical discharge space 8 is formed by coaxially arranging a 2 mm inner tube 2 and an outer tube 3 having an inner diameter of about 24 mm and a wall thickness of 1 mm. The outer tube 3 also serves as a dielectric barrier for dielectric barrier discharge and a light extraction window member, and an electrode 4 made of a conductive net that transmits light is provided on the outer surface thereof. On the outer surface of the inner tube 4, an aluminum thin film electrode 5 which also serves as a light reflecting plate and an electrode for dielectric barrier discharge is provided. Therefore, the discharge gap is 5 mm. A barium getter 7 is provided in a getter housing chamber 6 provided at one end of the discharge vessel 1. 3 as discharge gas in the discharge space 8 of the discharge vessel
Filled with 50 torr xenon gas. The aluminum thin film electrode 5 is made of an additional type silicone rubber 9 and has a thickness of 0.5.
To 1 mm and heated at 120 ° C. for 1 hour to cure. A power supply with an input power of 0.4 watts per square centimeter of the surface of the dielectric barrier discharge lamp 1
It was lit at 0. As a result, ultraviolet rays having a maximum value at 172 nm are efficiently radiated, no silicon oxide is generated due to silicon rubber, and ozone generated by the ultraviolet rays having a maximum value at 172 nm causes the aluminum thin film electrode 5 to be removed. A high-performance dielectric barrier discharge lamp having sufficient life characteristics was obtained while maintaining the advantage of the dielectric barrier discharge lamp that is not damaged and therefore has a large degree of freedom in the shape of the discharge vessel. . Aluminum efficiently reflects vacuum ultraviolet rays, so 172
The extraction efficiency of ultraviolet rays having a maximum value in nm was increased, and particularly high efficiency was achieved.

【0013】本発明の第2の施例においては、図1の同
軸円筒形誘電体バリヤ放電ランプにおけるゲッター収容
室6とゲッター7を取り除いた構造の放電容器に、エキ
シマ分子を形成させるためのガスとしてキセノンと塩素
を封入し、さらに、バッファーガスとしてネオンを封入
し、該アルミニウム薄膜電極5を窒化ボロンで被覆し
た。この実施例においては、波長308nmに最大値を
有する紫外線が効率よく放射され、かつ、空気中の酸素
によって該アルミニウム薄膜電極5が損傷されることが
なく、従って、放電容器の形状の自由度が大きいという
誘電体バリヤ放電ランプの利点を保った状態で、寿命特
性が十分である高性能の誘電体バリヤ放電ランプが得ら
れた。
In the second embodiment of the present invention, a gas for forming excimer molecules is formed in the discharge vessel of the coaxial cylindrical dielectric barrier discharge lamp shown in FIG. 1 from which the getter housing chamber 6 and the getter 7 are removed. As a result, xenon and chlorine were sealed, neon was sealed as a buffer gas, and the aluminum thin film electrode 5 was coated with boron nitride. In this embodiment, the ultraviolet ray having the maximum value at the wavelength of 308 nm is efficiently radiated, and the aluminum thin film electrode 5 is not damaged by oxygen in the air. Therefore, the degree of freedom of the shape of the discharge vessel is high. A high-performance dielectric barrier discharge lamp having sufficient life characteristics was obtained while maintaining the advantage of the large dielectric barrier discharge lamp.

【0014】本発明の第3の実施例においては、図1の
実施例におけるシリコンゴムの代わりに、該アルミニウ
ム薄膜電極5をニッケルの薄膜で覆った。電極5と電極
リード線13の接続が高信頼化出来、かつ、172nm
に最大値を有する紫外線によって発生したオゾンによっ
て該アルミニウム薄膜電極5が損傷されることがなく、
従って、放電容器の形状の自由度が大きいという誘電体
バリヤ放電ランプの利点を保った状態で、寿命特性が十
分である高性能の誘電体バリヤ放電ランプが得られた。
In the third embodiment of the present invention, the aluminum thin film electrode 5 is covered with a nickel thin film instead of the silicon rubber in the embodiment of FIG. The connection between the electrode 5 and the electrode lead wire 13 can be highly reliable and is 172 nm.
The aluminum thin film electrode 5 is not damaged by ozone generated by ultraviolet rays having a maximum value of
Therefore, a high-performance dielectric barrier discharge lamp having sufficient life characteristics can be obtained while maintaining the advantage of the dielectric barrier discharge lamp that the shape of the discharge vessel has a large degree of freedom.

【0015】本発明の第4の実施例である同軸円筒形誘
電体バリヤ放電ランプの概略図を、図2に示す。保護部
材以外は、第1の実施例と同一である。アルミニウム薄
膜電極5の上に、第一の保護部材として、有機溶剤に分
散させた窒化ボロン粉を塗布して窒化ボロン膜11を設
けた。第二の保護部材として、付加型のシリコンゴム1
2を窒化ボロン膜11の上に設けた。窒化ボロン膜11
およびシリコンゴム12は、アルミニウム薄膜電極5の
上に加えて、ランプの端部14にも設けた。この実施例
の構成では、アルミニウム薄膜電極5を直接保護するこ
とに加え、端部14からの余分な紫外線の放射も防止で
きるので、より長寿命特性の高性能誘電体バリヤ放電ラ
ンプが得られた。
A schematic view of a coaxial cylindrical dielectric barrier discharge lamp according to a fourth embodiment of the present invention is shown in FIG. Except for the protective member, it is the same as the first embodiment. On the aluminum thin film electrode 5, boron nitride powder dispersed in an organic solvent was applied to form a boron nitride film 11 as a first protective member. Addition type silicone rubber 1 as the second protection member
2 was provided on the boron nitride film 11. Boron nitride film 11
In addition to the aluminum thin film electrode 5, the silicon rubber 12 was also provided on the end 14 of the lamp. In the structure of this embodiment, in addition to directly protecting the aluminum thin film electrode 5, it is possible to prevent the emission of extra ultraviolet rays from the end portion 14, so that a high performance dielectric barrier discharge lamp having a longer life characteristic can be obtained. .

【0016】[0016]

【発明の効果】上記したように、本発明によれば、放電
容器の形状の自由度が大きいという誘電体バリヤ放電ラ
ンプの利点を保った状態で、寿命特性が十分である高性
能の誘電体バリヤ放電ランプを提供することができる。
As described above, according to the present invention, a high-performance dielectric having sufficient life characteristics while maintaining the advantage of the dielectric barrier discharge lamp that the shape of the discharge vessel has a large degree of freedom. A barrier discharge lamp can be provided.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の誘電体バリヤ放電ランプの実施例の説
明図である。
FIG. 1 is an explanatory view of an embodiment of a dielectric barrier discharge lamp of the present invention.

【図2】本発明の誘電体バリヤ放電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 lamp of the present invention.

【符号の説明】[Explanation of symbols]

1 放電容器 2 内側管 3 外側管 4 導電性網電極 5 導電性薄膜電極 7 ゲッタ 9 シリコンゴム 11 窒化ボロン膜 12 シリコンゴム 1 Discharge container 2 Inner tube 3 Outer tube 4 Conductive mesh electrode 5 Conductive thin film electrode 7 Getter 9 Silicon rubber 11 Boron nitride film 12 Silicon rubber

───────────────────────────────────────────────────── フロントページの続き (72)発明者 笠木 邦雄 兵庫県姫路市別所町佐土1194番地 ウシオ 電機株式会社内 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Kunio Kasagi 1194 Sado, Bessho-cho, Himeji-shi, Hyogo Ushio Electric Co., Ltd.

Claims (8)

【特許請求の範囲】[Claims] 【請求項1】 放電容器に誘電体バリヤ放電によってエ
キシマ分子を形成する放電用ガスが充填され、該エキシ
マ分子から放射される光を取り出す窓部材を有し、該放
電容器の少なくとも一部は該誘電体バリヤ放電の誘電体
であり、かつ、放電容器と誘電体バリヤ放電の誘電体と
を兼ねている部分の誘電体の放電空間の反対側の表面に
設けられた導電性薄膜からなる電極を含む誘電体バリヤ
放電ランプにおいて、該導電性薄膜を化学的・機械的に
保護するための部材を設けたことを特徴とする誘電体バ
リヤ放電ランプ。
1. A discharge vessel is filled with a discharge gas that forms excimer molecules by dielectric barrier discharge, and has a window member for extracting light emitted from the excimer molecules, and at least a part of the discharge vessel is provided with the window member. An electrode composed of a conductive thin film is provided on the surface of the dielectric that is the dielectric of the dielectric barrier discharge, and that is also the discharge container and the dielectric of the dielectric barrier discharge. A dielectric barrier discharge lamp including a dielectric barrier discharge lamp including a member for chemically and mechanically protecting the conductive thin film.
【請求項2】 該導電性薄膜を保護するための部材が、
シリコンゴム、フッ素樹脂、酸化物、窒化物およびフッ
化物の中から選ばれた少なくとも一種であることを特徴
とした請求項1に記載の誘電体バリヤ放電ランプ。
2. A member for protecting the conductive thin film,
The dielectric barrier discharge lamp according to claim 1, wherein the dielectric barrier discharge lamp is at least one selected from silicon rubber, fluororesin, oxide, nitride, and fluoride.
【請求項3】 該導電性薄膜を保護するための部材が、
酸化物、窒化物の中から選ばれた少なくとも一種であ
り、さらに該部材の上に有機物からなる保護部材が設け
られた構造であることを特徴とした請求項1に記載の誘
電体バリヤ放電ランプ。
3. A member for protecting the conductive thin film,
2. The dielectric barrier discharge lamp according to claim 1, wherein the dielectric barrier discharge lamp is at least one selected from oxides and nitrides, and has a structure in which a protective member made of an organic material is further provided on the member. .
【請求項4】 該導電性薄膜がアルミニウムからなり、
かつ、該導電性薄膜を保護するための部材が導電性物質
であることを特徴とした請求項1に記載の誘電体バリヤ
放電ランプ。
4. The conductive thin film is made of aluminum,
The dielectric barrier discharge lamp according to claim 1, wherein the member for protecting the conductive thin film is a conductive substance.
【請求項5】 該導電性薄膜を保護するための部材が、
白金、パラジウム、金、銀、ニッケルの中から選ばれた
少なくとも一種であることを特徴とした請求項4に記載
の誘電体バリヤ放電ランプ。
5. A member for protecting the conductive thin film,
The dielectric barrier discharge lamp according to claim 4, which is at least one selected from platinum, palladium, gold, silver, and nickel.
【請求項6】 該エキシマ分子から放射される光が波長
200nm以下の紫外線であることを特徴とした請求項
1から請求項5に記載の誘電体バリヤ放電ランプ。
6. The dielectric barrier discharge lamp according to claim 1, wherein the light emitted from the excimer molecule is ultraviolet light having a wavelength of 200 nm or less.
【請求項7】 該誘電体バリヤ放電ランプが概略中空円
筒状であることを特徴とした請求項1から請求項6に記
載の誘電体バリヤ放電ランプ。
7. The dielectric barrier discharge lamp according to claim 1, wherein the dielectric barrier discharge lamp has a substantially hollow cylindrical shape.
【請求項8】 該導電性薄膜を保護するための部材が付
加型のシリコンゴムであることを特徴とした請求項1に
記載の誘電体バリヤ放電ランプ。
8. The dielectric barrier discharge lamp according to claim 1, wherein the member for protecting the conductive thin film is an addition type silicone rubber.
JP24609893A 1993-09-08 1993-09-08 Dielectric barrier discharge lamp Expired - Fee Related JP3269213B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24609893A JP3269213B2 (en) 1993-09-08 1993-09-08 Dielectric barrier discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24609893A JP3269213B2 (en) 1993-09-08 1993-09-08 Dielectric barrier discharge lamp

Publications (2)

Publication Number Publication Date
JPH0778593A true JPH0778593A (en) 1995-03-20
JP3269213B2 JP3269213B2 (en) 2002-03-25

Family

ID=17143465

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24609893A Expired - Fee Related JP3269213B2 (en) 1993-09-08 1993-09-08 Dielectric barrier discharge lamp

Country Status (1)

Country Link
JP (1) JP3269213B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006251927A (en) * 2005-03-08 2006-09-21 Sony Corp Input device, touch panel and electronic device
KR100924452B1 (en) * 2008-04-24 2009-11-03 주식회사 원익 쿼츠 Dielectric barrier discharge lamp
JP2011504638A (en) * 2007-11-26 2011-02-10 オスラム ゲゼルシャフト ミット ベシュレンクテル ハフツング Double tube structure dielectric barrier discharge lamp
CN113327839A (en) * 2021-06-22 2021-08-31 生命阳光(广州)大健康发展有限公司 Ultraviolet lamp tube
EP4109492A3 (en) * 2021-06-22 2023-04-12 Langsim Optoelectronic Technologies (Guangdong) Limited Ultraviolet lamp tube

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006251927A (en) * 2005-03-08 2006-09-21 Sony Corp Input device, touch panel and electronic device
JP2011504638A (en) * 2007-11-26 2011-02-10 オスラム ゲゼルシャフト ミット ベシュレンクテル ハフツング Double tube structure dielectric barrier discharge lamp
KR100924452B1 (en) * 2008-04-24 2009-11-03 주식회사 원익 쿼츠 Dielectric barrier discharge lamp
CN113327839A (en) * 2021-06-22 2021-08-31 生命阳光(广州)大健康发展有限公司 Ultraviolet lamp tube
EP4109492A3 (en) * 2021-06-22 2023-04-12 Langsim Optoelectronic Technologies (Guangdong) Limited Ultraviolet lamp tube

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