JPH08273872A - Low pressure mercury discharge lamp lighting device and ultraviolet ray irradiation device - Google Patents
Low pressure mercury discharge lamp lighting device and ultraviolet ray irradiation deviceInfo
- Publication number
- JPH08273872A JPH08273872A JP7375395A JP7375395A JPH08273872A JP H08273872 A JPH08273872 A JP H08273872A JP 7375395 A JP7375395 A JP 7375395A JP 7375395 A JP7375395 A JP 7375395A JP H08273872 A JPH08273872 A JP H08273872A
- Authority
- JP
- Japan
- Prior art keywords
- discharge
- airtight container
- current
- discharge space
- 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.)
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Links
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、低圧水銀放電灯を備
え、低圧水銀放電灯から放射された光を利用する低圧水
銀放電灯点灯装置および紫外線照射装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low-pressure mercury discharge lamp lighting device and an ultraviolet irradiation device which are equipped with a low-pressure mercury discharge lamp and utilize the light emitted from the low-pressure mercury discharge lamp.
【０００２】[0002]
【従来の技術】従来、特開平４ー３０１３５４号公報に
記載の紫外線照射装置がある。2. Description of the Related Art Conventionally, there is an ultraviolet irradiation device described in Japanese Patent Application Laid-Open No. 4-301354.
【０００３】この従来装置は、電流密度が１Ａ／cm2 以
上で点灯されるＵ字状の低圧放電灯と、この放電灯を矩
形波電流で点灯させるとともにこの放電灯に対する入力
を調整可能な点灯回路装置と、放電灯に対する入力を増
した場合にこの放電灯の最冷部温度が変化するように制
御可能なフアンを含む冷却装置からなる。This conventional device is a U-shaped low-pressure discharge lamp which is lit at a current density of 1 A / cm 2 or more, and a lighting circuit which illuminates the discharge lamp with a rectangular wave current and can adjust the input to the discharge lamp. It comprises a device and a cooling device including a fan controllable so that the coldest temperature of the discharge lamp changes when the input to the discharge lamp is increased.
【０００４】従来装置は、低圧放電灯の発光管バルブの
端部に、放熱フィンを取り付けたヒートパイプを連結し
た冷却ブロックを接触させて、放熱フィンを冷却するこ
とで、発光管バルブの端部に最冷部を形成させている。
前記放電灯に対する入力を増した場合には、この放電灯
の最冷部温度が低下するようにフアンの回転を制御す
る。In the conventional device, the end portion of the arc tube bulb of the low-pressure discharge lamp is brought into contact with a cooling block connected to a heat pipe having a radiation fin so that the radiation fin is cooled. The coldest part is formed.
When the input to the discharge lamp is increased, the fan rotation is controlled so that the temperature of the coldest part of the discharge lamp is lowered.
【０００５】従来装置によれば、低圧放電灯の紫外線出
力を増すために放電電流を増した場合は、これに応じて
最冷部の温度を低くめることができるので、水銀蒸気圧
が最適な状態となって、これにより出力を向上すること
ができる。According to the conventional device, when the discharge current is increased in order to increase the ultraviolet ray output of the low-pressure discharge lamp, the temperature of the coldest part can be lowered correspondingly, so that the mercury vapor pressure is optimum. The state is brought about, and thus the output can be improved.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、従来装
置は、放電灯に対する入力を増した場合にこの放電灯の
最冷部温度を上昇するように制御可能なフアンを含む冷
却装置を必要とするから、装置が複雑となり、これに伴
って装置が高価となる可能性がある。However, prior art devices require a cooling device including a fan controllable to raise the coldest part temperature of the discharge lamp when the input to the discharge lamp is increased. However, the device becomes complicated, and the device may be expensive accordingly.
【０００７】本発明の目的は、低圧水銀放電灯の最冷部
温度を制御するフアン等の冷却装置を必要とせず、低圧
水銀放電灯を調光制御した場合に、所望の光出力を得る
ことができる低圧水銀放電灯点灯装置および紫外線照射
装置を提供することにある。An object of the present invention is to obtain a desired light output when dimming control is performed on a low-pressure mercury discharge lamp without requiring a cooling device such as a fan for controlling the coldest temperature of the low-pressure mercury discharge lamp. It is an object of the present invention to provide a low pressure mercury discharge lamp lighting device and an ultraviolet irradiation device capable of performing the above.
【課題を解決するための手段】請求項１は、放電空間お
よび放電空間の温度の影響を受けにくい位置に最冷部を
有する気密容器と、放電空間の両端となる気密容器の所
定位置に設けられた一対の電極と、気密容器に封入され
た希ガスおよび水銀と、を備えた低圧水銀放電灯と；
放電電流をこの電流の流れる方向に直交する気密容器の
放電空間断面積で割った値を電流密度としたときに、一
対の電極間に電流密度が０．５ないし１０．０A ／cm2
の範囲内となる略矩形波電流を流すことで放電空間に放
電を形成する調光点灯手段と；を具備していることを特
徴とする低圧水銀放電灯点灯装置である。According to a first aspect of the present invention, an airtight container having a coldest portion at a position where the discharge space and the temperature of the discharge space are unlikely to be affected, and a predetermined position of the airtight container at both ends of the discharge space are provided. Low-pressure mercury discharge lamp including a pair of electrodes provided and a rare gas and mercury enclosed in an airtight container;
When the current density is defined as the value obtained by dividing the discharge current by the cross-sectional area of the discharge space of the airtight container which is orthogonal to the direction in which this current flows, the current density between the pair of electrodes is 0.5 to 10.0 A / cm2.
A low-pressure mercury discharge lamp lighting device, comprising: a dimming lighting means for forming a discharge in a discharge space by flowing a substantially rectangular wave current falling within the range.
【０００８】略矩形波電流とは、半波中の電流の立上が
り、立下がり時間の和の占める率が１０％以下のものを
いう。The substantially rectangular wave current means a current having a ratio of 10% or less to the sum of the rise time and the fall time of the current in the half wave.
【０００９】気密容器は、直管状の他、放電が中間部で
屈曲するような容器形状のものを許容する。As the airtight container, in addition to a straight tube, a container shape in which discharge is bent at the middle portion is allowed.
【００１０】最冷部とは、放電灯を点灯した際に、水銀
が溜る部分すなわち放電空間中の最も温度の低い部分で
ある。The coldest portion is a portion where mercury is accumulated when the discharge lamp is turned on, that is, a portion having the lowest temperature in the discharge space.
【００１１】放電空間の温度の影響を受けにくい最冷部
とは、放電空間の放電が調光点灯手段の調整によって変
化して放電空間の温度が変動した場合に、この温度変動
の影響を受けにくい部分をいう。例えば気密容器から外
方に突出して放電空間から離れた位置に配設された細管
や、放電空間内の適所に放電によって生じる熱を遮蔽す
る熱遮蔽体を配設した空間を含む。The coldest part which is hardly affected by the temperature of the discharge space is affected by the temperature fluctuation when the discharge of the discharge space is changed by the adjustment of the dimming lighting means and the temperature of the discharge space is changed. The difficult part. For example, it includes a thin tube that projects outward from the airtight container and is disposed at a position away from the discharge space, and a space in which a heat shield that shields heat generated by the discharge is disposed at an appropriate position in the discharge space.
【００１２】調光点灯手段とは、放電灯に流れる電流を
調節可能な点灯手段をいい、かつその電流を安定的に流
す作用を行うものである。The dimming lighting means is a lighting means capable of adjusting the current flowing through the discharge lamp, and has a function of stably flowing the current.
【００１３】請求項２は、放電空間および放電空間の温
度の影響を受けにくい位置に最冷部を有する気密容器
と、放電空間の両端となる気密容器の所定位置に設けら
れた一対の電極と、気密容器に封入された希ガスおよび
水銀と、を備えた低圧水銀放電灯と； 放電電流をこの
電流の流れる方向に直交する気密容器の放電空間断面積
で割った値を電流密度としたときに、一対の電極間に電
流密度が０．５ないし１０．０A ／cm2 の範囲内となる
第３次高調波電流を流すことで放電空間に放電を形成す
る調光点灯手段と；を具備していることを特徴とする低
圧水銀放電灯点灯装置である。According to a second aspect of the present invention, there is provided an airtight container having a coldest portion at a position where the discharge space and the temperature of the discharge space are unlikely to be affected, and a pair of electrodes provided at predetermined positions of the airtight container at both ends of the discharge space. A low-pressure mercury discharge lamp provided with a rare gas and mercury sealed in an airtight container; a value obtained by dividing a discharge current by a cross-sectional area of a discharge space of the airtight container orthogonal to the flowing direction of the current, And a dimming lighting means for forming a discharge in the discharge space by flowing a third harmonic current having a current density in the range of 0.5 to 10.0 A / cm2 between the pair of electrodes. It is a low-pressure mercury discharge lamp lighting device characterized in that.
【００１４】第３次高調波電流とは、基準とする任意の
周波数の正弦波電流が存在していて、この基準とする正
弦波電流にその３倍の周波数の正弦波電流を重畳した合
成電流をいう。The third harmonic current is a composite current in which a sine wave current having an arbitrary reference frequency exists, and a sine wave current having a triple frequency is superimposed on the reference sine wave current. Say.
【００１５】請求項３は、放電空間および放電空間の温
度の影響を受けにくい位置に最冷部を有する気密容器
と、放電空間の両端となる気密容器の所定位置に設けら
れた一対の電極と、気密容器に封入された希ガスおよび
水銀と、を備えた低圧水銀放電灯と； 放電電流をこの
電流の流れる方向に直交する気密容器の放電空間断面積
で割った値を電流密度としたときに、一対の電極間に電
流密度が０．５ないし１０．０A ／cm2 の範囲内でかつ
１０ＫＨｚ以上の高周波電流を流すことで放電空間に放
電を形成する調光点灯手段と；を具備していることを特
徴とする低圧水銀放電灯点灯装置である。According to a third aspect of the present invention, there is provided an airtight container having a coldest portion at a position where the discharge space and the temperature of the discharge space are unlikely to be affected, and a pair of electrodes provided at predetermined positions of the airtight container at both ends of the discharge space. A low-pressure mercury discharge lamp provided with a rare gas and mercury sealed in an airtight container; a value obtained by dividing a discharge current by a cross-sectional area of a discharge space of the airtight container orthogonal to the flowing direction of the current, And a dimming lighting means for forming a discharge in a discharge space by flowing a high frequency current of 10 KHz or more within a current density range of 0.5 to 10.0 A / cm2 between the pair of electrodes. It is a low pressure mercury discharge lamp lighting device characterized in that
【００１６】請求項４は、放電空間を有する気密容器
と、放電空間の両端となる気密容器の所定位置に設けら
れた一対の電極と、気密容器に封入された希ガスおよび
水銀アマルガムと、を備えた低圧水銀放電灯と； 放電
電流をこの電流の流れる方向に直交する気密容器の放電
空間断面積で割った値を電流密度としたときに、一対の
電極間に電流密度が０．５ないし１０．０A ／cm2 の範
囲内の略矩形波電流を流すことで放電空間に放電を形成
する調光点灯手段と；を具備していることを特徴とする
低圧水銀放電灯点灯装置である。According to a fourth aspect of the present invention, there is provided an airtight container having a discharge space, a pair of electrodes provided at predetermined positions of the airtight container at both ends of the discharge space, and a rare gas and mercury amalgam enclosed in the airtight container. A low-pressure mercury discharge lamp provided; a current density between a pair of electrodes is 0.5 or less, when a value obtained by dividing a discharge current by a cross-sectional area of a discharge space of an airtight container orthogonal to a flowing direction of the current is a current density. A low-pressure mercury discharge lamp lighting device, comprising: a dimming lighting means for forming a discharge in a discharge space by flowing a substantially rectangular wave current in the range of 10.0 A / cm 2.
【００１７】水銀アマルガムとは、水銀と他の金属との
合金であり、例えば、ビスマス水銀合金、インジウム水
銀合金等を含む。Mercury amalgam is an alloy of mercury and another metal, and includes, for example, a bismuth mercury alloy and an indium mercury alloy.
【００１８】請求項５は、放電空間を有する気密容器
と、放電空間の両端となる気密容器の所定位置に設けら
れた一対の電極と、気密容器に封入された希ガスおよび
水銀アマルガムと、を備えた低圧水銀放電灯と； 放電
電流をこの電流の流れる方向に直交する気密容器の放電
空間断面積で割った値を電流密度としたときに、一対の
電極間に電流密度が０．５ないし１０．０A ／cm2 の範
囲内の第３次高調波電流を流すことで放電空間に放電を
形成する調光点灯手段と；を具備していることを特徴と
する低圧水銀放電灯点灯装置である。According to a fifth aspect of the present invention, there is provided an airtight container having a discharge space, a pair of electrodes provided at predetermined positions of the airtight container at both ends of the discharge space, and a rare gas and mercury amalgam enclosed in the airtight container. A low-pressure mercury discharge lamp provided; a current density between a pair of electrodes is 0.5 or less, when a value obtained by dividing a discharge current by a cross-sectional area of a discharge space of an airtight container orthogonal to a flowing direction of the current is defined as a current density. A low-pressure mercury discharge lamp lighting device, comprising: a dimming lighting means for forming a discharge in a discharge space by flowing a third harmonic current in the range of 10.0 A / cm2. .
【００１９】請求項６は、放電空間を有する気密容器
と、放電空間の両端となる気密容器の所定位置に設けら
れた一対の電極と、気密容器に封入された希ガスおよび
水銀アマルガムと、を備えた低圧水銀放電灯と； 放電
電流をこの電流の流れる方向に直交する気密容器の放電
空間断面積で割った値を電流密度としたときに、一対の
電極間に電流密度が０．５ないし１０．０A ／cm2 の範
囲内でかつ１０ＫＨｚ以上の高周波電流を流すことで放
電空間に放電を形成する調光点灯手段と；を具備してい
ることを特徴とする低圧水銀放電灯点灯装置である。According to a sixth aspect of the present invention, there is provided an airtight container having a discharge space, a pair of electrodes provided at predetermined positions of the airtight container at both ends of the discharge space, and a rare gas and mercury amalgam enclosed in the airtight container. A low-pressure mercury discharge lamp provided; a current density between a pair of electrodes is 0.5 or less, when a value obtained by dividing a discharge current by a cross-sectional area of a discharge space of an airtight container orthogonal to a flowing direction of the current is defined as a current density. A low-pressure mercury discharge lamp lighting device comprising: a dimming lighting means for forming a discharge in a discharge space by flowing a high-frequency current of 10.0 A / cm2 and 10 KHz or more. .
【００２０】請求項７は、請求項１ないし６いずれか一
記載の低圧水銀放電灯点灯装置と、低圧水銀放電灯を収
容する紫外線照射装置本体と、を具備していることを特
徴とする紫外線照射装置である。A seventh aspect of the present invention is an ultraviolet ray comprising the low-pressure mercury discharge lamp lighting device according to any one of the first to sixth aspects, and an ultraviolet irradiation device main body that houses the low-pressure mercury discharge lamp. It is an irradiation device.
【００２１】紫外線照射装置本体とは、低圧水銀放電灯
からの出力光を所望の方向に取り出すように構成された
ものであればよい。紫外線照射装置本体には、調光点灯
手段が収容されている構成および紫外線照射装置本体と
調光点灯手段とが別体をなし調光点灯手段と紫外線照射
装置本体内の低圧水銀放電灯とが電気配線で接続されて
いる構成を含む。The main body of the ultraviolet irradiator may be any one which is constructed so as to extract the output light from the low pressure mercury discharge lamp in a desired direction. The main body of the ultraviolet irradiation device contains a dimming lighting means, and the main body of the ultraviolet irradiation device and the dimming lighting means are separate bodies and the dimming lighting means and the low-pressure mercury discharge lamp in the main body of the ultraviolet irradiation device are provided. Includes configurations connected by electrical wiring.
【００２２】請求項８は、請求項１ないし６いずれか一
記載の低圧水銀放電灯点灯装置と、低圧水銀放電灯を収
容した光透過性の外管と、紫外線照射用流体を流通さ
せ、この紫外線照射用流体に外管を浸漬した紫外線照射
装置本体と、を具備していることを特徴とする紫外線照
射装置である。According to an eighth aspect of the present invention, the low-pressure mercury discharge lamp lighting device according to any one of the first to sixth aspects, a light-transmitting outer tube accommodating the low-pressure mercury discharge lamp, and an ultraviolet irradiation fluid are circulated. An ultraviolet irradiating device, comprising: an ultraviolet irradiating device main body in which an outer tube is immersed in an ultraviolet irradiating fluid.
【００２３】本発明において、紫外線照射装置とは、上
下水の浄化、殺菌に使用される装置に限らず、紫外線を
照射して、紫外線の化学的反応作用を利用する装置であ
ればよく、半導体の有機不純物分解等の目的で使用され
る紫外線照射装置等を含む。In the present invention, the ultraviolet irradiation device is not limited to the device used for purification and sterilization of sewage and sewage, and may be any device that irradiates ultraviolet rays and utilizes the chemical reaction of ultraviolet rays. It includes an ultraviolet irradiation device used for the purpose of decomposing organic impurities.
【作用】請求項１によれば、０．５ないし１０．０A ／
cm2 の範囲内で高密度の電流を流すので、放電空間は例
えば１５０ないし２００゜Ｃの範囲内の温度変動が生じ
る。しかしながら、気密容器に設けられた放電空間の温
度の影響を受けにくい最冷部を有するために、０．５な
いし１０．０A ／cm2 の範囲内の電流密度の変動が生じ
ても、最冷部温度は変動しにくくなる。According to claim 1, 0.5 to 10.0 A /
Since a high-density electric current is passed in the range of cm2, the temperature of the discharge space varies, for example, in the range of 150 to 200 ° C. However, since it has the coldest part which is hardly affected by the temperature of the discharge space provided in the airtight container, even if the current density fluctuates within the range of 0.5 to 10.0A / cm2, the coldest part is generated. The temperature is less likely to fluctuate.
【００２４】最冷部温度が変動しないと、電流が正弦波
電流である場合には、電流が最大となる期間周辺で、中
性水銀原子が全てイオン化してしまい、紫外線の放射に
寄与する水銀が減少するから、大電流となれば紫外線の
放射に寄与する水銀が減少して紫外線の出力が増加しに
くくなる。If the temperature of the coldest part does not fluctuate and the current is a sinusoidal current, all of the neutral mercury atoms are ionized around the period when the current is maximum, and mercury that contributes to the emission of ultraviolet rays is emitted. Therefore, when the current is large, the amount of mercury that contributes to the emission of ultraviolet rays is reduced, and it becomes difficult to increase the output of ultraviolet rays.
【００２５】しかしながら、請求項１によれば、電流が
略矩形波電流であるために、電流のピーク値が同電流密
度の正弦波電流のピーク値に比較して低いので、電流を
増加しても中性水銀原子の消失はほとんどないから、紫
外線の放射に寄与する水銀の減少は抑制できる。However, according to claim 1, since the current is a substantially rectangular wave current, the peak value of the current is lower than the peak value of the sinusoidal current of the same current density. Therefore, the current is increased. However, since the neutral mercury atoms are hardly lost, the reduction of mercury that contributes to the emission of ultraviolet rays can be suppressed.
【００２６】なお、０．５A ／cm2 未満の電流である
と、十分な電流でないために、大きい紫外線出力を得る
ことが困難である。また、１０．０A ／cm2 を越える電
流であると矩形波電流であっても電流が最大となる期間
周辺で、中性水銀原子が全てイオン化してしまい、紫外
線の放射に寄与する水銀が減少して紫外線の放射が減少
してしまう。If the current is less than 0.5 A / cm 2, it is difficult to obtain a large ultraviolet ray output because the current is not sufficient. In addition, if the current exceeds 10.0 A / cm2, even if it is a rectangular wave current, all the neutral mercury atoms are ionized around the period when the current is maximum, and the mercury that contributes to the emission of ultraviolet rays decreases. UV radiation is reduced.
【００２７】したがって、本発明によれば、最冷部温度
が放電に起因する熱の影響を受けにくい最冷部を備えた
低圧水銀放電灯を略矩形波電流で調光点灯させるので最
冷部温度の変化がほとんどなく、紫外線の出力を電流に
応じて変化させることができる。Therefore, according to the present invention, since the low-pressure mercury discharge lamp having the coldest portion whose temperature in the coldest portion is less likely to be affected by the heat caused by the discharge is dimmed by the substantially rectangular wave current, the coldest portion is obtained. There is almost no change in temperature, and the output of ultraviolet rays can be changed according to the current.
【００２８】請求項２によれば、０．５ないし１０．０
A ／cm2 の範囲内の第３次高調波電流であるために、電
流のピーク値が同電流密度の正弦波電流のピーク値に比
較して低いので、電流を増加しても中性水銀原子の消失
はほとんどないから、紫外線の放射に寄与する水銀の減
少は抑制でき、その他の作用は請求項１と同様の作用を
生じる。According to claim 2, 0.5 to 10.0
Since it is the third harmonic current in the range of A / cm2, the peak value of the current is lower than the peak value of the sinusoidal current of the same current density. Is almost eliminated, the reduction of mercury that contributes to the emission of ultraviolet rays can be suppressed, and the other actions produce the same actions as in claim 1.
【００２９】請求項３によれば、０．５ないし１０．０
A ／cm2 の範囲内でかつ１０ＫＨｚ以上の高周波電流で
あるために、電流のピーク値が同電流密度の正弦波電流
のピーク値に比較して低いので、電流を増加しても中性
水銀原子の消失はほとんどないから、紫外線の放射に寄
与する水銀の減少は抑制でき、その他の作用は請求項１
と同様の作用を生じる。According to claim 3, 0.5 to 10.0
Since it is a high frequency current of 10 KHz or more within the range of A / cm2, the peak value of the current is lower than the peak value of the sinusoidal current of the same current density, so even if the current is increased, neutral mercury atoms Is almost completely eliminated, the reduction of mercury that contributes to the emission of ultraviolet rays can be suppressed, and other effects are claimed in claim 1.
Produces the same effect as.
【００３０】なお、１０ＫＨｚ未満の高周波電流である
と０．５ないし１０．０A ／cm2 の範囲内であっても、
中性水銀原子の消失が生じてしまい水銀の減少は抑制で
きなくなる。At a high frequency current of less than 10 KHz, even within the range of 0.5 to 10.0 A / cm 2,
The disappearance of neutral mercury atoms occurs and the reduction of mercury cannot be suppressed.
【００３１】請求項４によれば、水銀がアマルガム状態
で封入されるから、放電空間は例えば１５０ないし２０
０゜Ｃの範囲内の温度変動が生じても、水銀は所定以上
蒸発しにくくなるので、水銀蒸気圧は所定以上にはなり
にくい。したがって、０．５ないし１０．０A ／cm2 の
範囲内の電流の変化に応じて紫外線の出力は変化する。According to the fourth aspect, since the mercury is enclosed in the amalgam state, the discharge space is, for example, 150 to 20.
Even if the temperature fluctuates within the range of 0 ° C., it becomes difficult for the mercury to evaporate beyond a predetermined level, so the mercury vapor pressure does not easily exceed a predetermined level. Therefore, the output of ultraviolet light changes in response to changes in the current within the range of 0.5 to 10.0 A / cm @ 2.
【００３２】請求項５によれば、請求項４と同様の作用
が生じる。According to the fifth aspect, the same operation as the fourth aspect occurs.
【００３３】請求項６によれば、請求項４と同様の作用
が生じる。According to the sixth aspect, the same operation as the fourth aspect occurs.
【００３４】請求項７および８によれば、請求項１ない
し６いずれかと同様の作用が生じる。According to the seventh and eighth aspects, the same operation as in any one of the first to sixth aspects occurs.
【実施例】図１は、本発明の紫外線照射装置の一実施例
の要部すなわち低圧水銀放電灯および点灯回路装置の概
念図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a conceptual diagram of a main part of an embodiment of an ultraviolet irradiation apparatus of the present invention, that is, a low pressure mercury discharge lamp and a lighting circuit device.
【００３５】図１において１は低圧水銀放電灯であり、
この放電灯１は内径２４mmのＵ字形に屈曲された石英ガ
ラスからなる気密容器２を備えている。In FIG. 1, 1 is a low pressure mercury discharge lamp,
This discharge lamp 1 is provided with an airtight container 2 made of quartz glass and bent into a U shape having an inner diameter of 24 mm.
【００３６】気密容器２の端部にはそれぞれ陽極３と陰
極４が封装されており、各陽極３は陰極４よりも放電空
間の前方に配置されている。なお、陽極３は円形コイル
または円筒あるいは環状板により形成されている。An anode 3 and a cathode 4 are sealed at the ends of the airtight container 2, and each anode 3 is arranged in front of the discharge space with respect to the cathode 4. The anode 3 is formed by a circular coil, a cylinder or an annular plate.
【００３７】この気密容器２には、例えば２００mgの水
銀と、０．０５〜０．８torrのアルゴンガスが封入され
ている。The airtight container 2 is filled with, for example, 200 mg of mercury and 0.05 to 0.8 torr of argon gas.
【００３８】５は、気密容器２の屈曲部に気密容器２外
側に向けて２０ないし３５mmの範囲の長さで突設された
最冷部であり、この最冷部５の内部空間に余剰の水銀６
が溜まるようにしている。Reference numeral 5 denotes a coldest portion projecting from the bent portion of the airtight container 2 toward the outside of the airtight container 2 with a length in the range of 20 to 35 mm. Mercury 6
Is trying to collect.
【００３９】この低圧水銀放電灯１は、点灯回路装置１
０を介して交流電源１１に接続されている。点灯回路装
置１０は整流平滑回路１２、電界効果トランジスタ等を
含むパルス発生回路１３、パワ−アンプ１４等からな
る。そして、パルス発生回路１３には、周波数および電
流を調整する制御回路１５が接続されている。This low-pressure mercury discharge lamp 1 comprises a lighting circuit device 1
It is connected to the AC power supply 11 via 0. The lighting circuit device 10 includes a rectifying / smoothing circuit 12, a pulse generating circuit 13 including a field effect transistor, a power amplifier 14, and the like. A control circuit 15 that adjusts the frequency and the current is connected to the pulse generation circuit 13.
【００４０】図２は、同上の実施例の点灯回路装置から
の出力電流波形である。すなわち、点灯回路装置１０
は、制御回路１５を操作して図２に示す矩形波の電流を
放電灯１に供給する。FIG. 2 shows an output current waveform from the lighting circuit device of the above embodiment. That is, the lighting circuit device 10
Operates the control circuit 15 to supply the rectangular wave current shown in FIG. 2 to the discharge lamp 1.
【００４１】交流電源１１は、たとえば２００Ｖの商用
電源であり、この電源１１にはヒ−タトランス１６、１
６が接続されている。The AC power supply 11 is, for example, a commercial power supply of 200 V, and the power supply 11 includes the heater transformers 16 and 1.
6 is connected.
【００４２】ヒ−タトランス１６、１６はそれぞれ陰極
４、４に接続され、したがってこれら陰極４、４は常に
発熱して熱電子を放出する熱陰極となっている。The heater transformers 16 and 16 are connected to the cathodes 4 and 4, respectively, so that the cathodes 4 and 4 are hot cathodes that constantly generate heat and emit thermoelectrons.
【００４３】このような実施例における低圧水銀放電灯
１は、例えば、入力１０００ないし２０００Ｗ、０．５
ないし１０．０A ／cm2 電流密度の範囲となるようにし
て点灯されるようになっており、上記点灯回路装置１０
は、放電灯１に対して約１０Ｈｚの交流矩形波電流を印
加するように構成されている。The low-pressure mercury discharge lamp 1 in such an embodiment has an input of 1000 to 2000 W, 0.5, for example.
The lighting circuit device 10 is designed to be lit in a current density range of 10.0 A / cm2 to 10.0 A / cm2.
Is configured to apply an AC rectangular wave current of about 10 Hz to the discharge lamp 1.
【００４４】このような紫外線照射装置の低圧水銀放電
灯および点灯回路装置の作用について説明する。The operation of the low-pressure mercury discharge lamp and the lighting circuit device of such an ultraviolet irradiation device will be described.
【００４５】放電灯１を点灯回路装置１０を通じて電源
１１に接続して点灯させた場合、陰極４、４はヒ−タト
ランス１６、１６を介して交流電源１１に接続されてい
るので、これら陰極４、４が常に発熱して熱電子を放出
し、熱陰極となっている。When the discharge lamp 1 is connected to the power supply 11 through the lighting circuit device 10 and is turned on, the cathodes 4 and 4 are connected to the AC power supply 11 via the heater transformers 16 and 16, so that these cathodes 4 are connected. 4 always generates heat and emits thermoelectrons to serve as a hot cathode.
【００４６】そして、整流平滑回路１２およびパルス発
生回路１３ならびに制御回路１５の作用により、電源の
正弦波は、図２に示される矩形波に変換され、パワ−ア
ンプ１４で増幅されて各陽極３および陰極４間に与えら
れる。The sine wave of the power supply is converted into a rectangular wave shown in FIG. 2 by the action of the rectifying / smoothing circuit 12, the pulse generating circuit 13 and the control circuit 15, and is amplified by the power amplifier 14 to be amplified by the respective anodes 3. And between the cathodes 4.
【００４７】このため、低圧水銀放電灯１は、一端側の
陽極３と他端側の陰極４との間に矩形波の半波整流電流
が流され、これらの間で放電が生じ、次に一端側の陰極
４と他端側の陽極３との間に逆の矩形波の半波整流電流
が流され、これらの間で放電が発生する。このように極
性の反転毎に各陽極３と陰極４が交互に放電を繰り返し
て点灯を継続する。Therefore, in the low-pressure mercury discharge lamp 1, a half-wave rectification current of a rectangular wave is made to flow between the anode 3 on one end side and the cathode 4 on the other end side, and a discharge is generated between these, An opposite rectangular wave half-wave rectified current is passed between the cathode 4 on one end side and the anode 3 on the other end side, and a discharge is generated between them. In this way, each time the polarity is reversed, the anodes 3 and the cathodes 4 alternately repeat the discharge and continue lighting.
【００４８】このような放電により水銀主体の蒸気が低
圧状態で励起され、このため水銀の共鳴線１８５nmおよ
び２５４nmを始めとする短波長紫外線領域の光を放射す
るものである。Due to such discharge, the vapor mainly composed of mercury is excited in a low pressure state, so that light in the short wavelength ultraviolet region including the resonance lines 185 nm and 254 nm of mercury is emitted.
【００４９】制御回路１５の制御によって、点灯回路装
置１０から放電灯１のランプ電流密度が０．５ないし１
０．０A ／cm2 の範囲内となるように制御した場合、後
述する長さとしているから最冷部（例えば細管）５は、
気密容器内の放電によるの発熱による温度変化を受けな
い。すなわち、入力１０００Ｗ時、最冷部温度が約４０
度Ｃであったものが、入力２０００Ｗ時であっても４２
度Ｃ程度の温度変化にとどまった。Under the control of the control circuit 15, the lamp current density of the discharge lamp 1 from the lighting circuit device 10 is 0.5 to 1.
When controlled to be within the range of 0.0A / cm2, since the length is as described later, the coldest part (for example, thin tube) 5 is
No change in temperature due to heat generation due to discharge in the airtight container. That is, when the input is 1000 W, the coldest part temperature is about 40
What was degree C is 42 even when input is 2000W
The temperature change was only about C.
【００５０】図３は、従来技術と本実施例の紫外線出力
量の比較図である。すなわち、本実施例と同様の放電灯
を正弦波点灯したものと、本実施例の放電灯とを入力を
１０００Ｗから２０００Ｗに変化させたときの紫外線出
力量の変化を示すものである。なお、縦軸は入力１００
０Ｗでの最大紫外線量を１００％とした相対紫外線出力
量を示し、横軸は最冷部温度を示す。FIG. 3 is a comparison diagram of the ultraviolet ray output amounts of the prior art and this embodiment. That is, it shows a change in the ultraviolet ray output amount when the input of the discharge lamp similar to that of the present embodiment is sine-wave lit and the input of the discharge lamp of the present embodiment is changed from 1000W to 2000W. The vertical axis is input 100
The relative ultraviolet ray output amount is shown with the maximum ultraviolet ray amount at 0 W as 100%, and the horizontal axis shows the coldest part temperature.
【００５１】図３によると、本実施例は最冷部がほとん
ど変化しないにも拘らず、入力２０００Ｗ時の紫外線量
は、入力１０００Ｗ時の１．６倍となったのに対し、従
来技術は、入力２０００Ｗ時は、最冷部温度を４６度Ｃ
にしなければ、本実施例と同じ紫外線出力量を得られな
かった。According to FIG. 3, although the coldest part hardly changes in this embodiment, the amount of ultraviolet rays at the time of input 2000 W is 1.6 times that at the time of input 1000 W. , Input 2000W, the coldest part temperature is 46 degrees C
Otherwise, the same UV output as in this example could not be obtained.
【００５２】すなわち、従来技術は最冷部温度制御が必
要となるが、本実施例は、温度制御することなく紫外線
出力の増加を図れることがわかった。That is, although it was necessary to control the temperature of the coldest part in the prior art, it was found that the present embodiment can increase the ultraviolet ray output without controlling the temperature.
【００５３】本実施例は、矩形波電流を出力する調光点
灯手段を用いたが、０．５ないし１０．０A ／cm2 の範
囲内であれば、１０ＫＨｚ以上の高周波電流、第３次高
調波電流であっても同様な効果が得られることがわかっ
た。In this embodiment, the dimming lighting means for outputting a rectangular wave current is used. However, if it is within the range of 0.5 to 10.0 A / cm 2, a high frequency current of 10 KHz or more and a third harmonic wave. It was found that the same effect can be obtained even with current.
【００５４】また、最冷部が放電空間の温度変化の影響
を多少受けやすい位置にあっても、水銀がアマルガムの
状態で封入されていれば、最冷部温度が変化しても水銀
の上気圧の変化は抑えられ、冷却フアンで温度制御する
ことなく入力２０００Ｗ時の紫外線量は、入力１０００
Ｗ時の１．５倍となることがわかった。Even if the coldest part is located at a position where it is more susceptible to the temperature change of the discharge space, if mercury is enclosed in the form of an amalgam, even if the coldest part temperature changes, the temperature of the coldest part will be higher than that of the mercury. The change in atmospheric pressure is suppressed, and the amount of UV light at an input of 2000 W is 1000 without inputting temperature control with a cooling fan.
It was found to be 1.5 times that at W.
【００５５】図４ないし７は下水の殺菌浄化処理施設に
用いられる紫外線照射装置の例を示している。4 to 7 show an example of an ultraviolet irradiation device used in a sewage sterilization and purification treatment facility.
【００５６】図４は殺菌浄化処理施設に用いられる紫外
線照射装置の実施例の主要部の断面図、図５は同上の主
要部を切り欠いて示す断面図、図６は同上の水浄水槽の
平面図、図７は同上の紫外線照射モジュールの構造を示
す正面図である。FIG. 4 is a sectional view of a main part of an embodiment of an ultraviolet irradiation device used in a sterilization and purification treatment facility, FIG. 5 is a cross-sectional view showing a notched main part of the same, and FIG. 6 is a water purification tank of the same. FIG. 7 is a plan view showing the structure of the ultraviolet irradiation module of the above.
【００５７】ここで紫外線照射ユニット２０の構造につ
いて、図３および図４にもとづき説明する。紫外線照射
ユニット２０の基本的水銀放電灯１の構造は図１と全て
同じである。Here, the structure of the ultraviolet irradiation unit 20 will be described with reference to FIGS. 3 and 4. The structure of the basic mercury discharge lamp 1 of the ultraviolet irradiation unit 20 is the same as that of FIG.
【００５８】外管ジャケット２１は遠紫外線を透過する
石英ガラスにより構成されており、下端が閉塞されてい
るとともに上端は開放されており、丁度試験管を大きく
したような形状をなしている。例えば、定格１０００Ｗ
の場合、外管ジャケット１１の外径は８５mm（内径８０
mm）、全長が１６００mmとされている。The outer tube jacket 21 is made of quartz glass that transmits far ultraviolet rays, and has a closed lower end and an open upper end, and has a shape just like a large test tube. For example, rated 1000W
In the case of, the outer diameter of the outer pipe jacket 11 is 85 mm (inner diameter 80
mm) and the total length is 1600 mm.
【００５９】この外管ジャケット２１には低圧水銀放電
灯１が収容されている。低圧水銀放電灯１は、内径が例
えば３０mmの石英ガラスからなるＵ字形の気密容器２か
らなり、Ｕ字形に曲成した状態の全長が１４００mmにさ
れている。この低圧水銀放電灯１は、その屈曲部が下向
きとなって外管ジャケット２１に収容されている。The outer tube jacket 21 accommodates the low-pressure mercury discharge lamp 1. The low-pressure mercury discharge lamp 1 comprises a U-shaped airtight container 2 made of quartz glass having an inner diameter of, for example, 30 mm, and has a total length of 1400 mm in a U-shaped bent state. The low-pressure mercury discharge lamp 1 is housed in the outer tube jacket 21 with its bent portion facing downward.
【００６０】気密容器２の両端部にはそれぞれ陽極３，
３および陰極２，２が封装されており、これら陽極３お
よび陰極４は外部リード線３４…に接続されている。At both ends of the airtight container 2, an anode 3,
3 and the cathodes 2 and 2 are sealed, and the anode 3 and the cathode 4 are connected to the external lead wires.
【００６１】上記気密容器２には、Ｕ字形に曲げられた
屈曲部に、最冷部ここでは水銀溜り部となる細管５が突
設されており、この細管５には水銀６が収容されてい
る。この細管５は、内径５mmであり、上記屈曲部からの
突出長さＬが最小２０mm、最大３５mmの範囲となるよう
に形成されており、これにより水銀６の温度が最適動作
温度の４０℃前後に保たれるようになっている。The airtight container 2 is provided with a thin tube 5 projecting at a bent portion bent in a U-shape and serving as a coldest portion, here a mercury pool, and mercury 6 is accommodated in the thin tube 5. There is. The thin tube 5 has an inner diameter of 5 mm and is formed so that the protruding length L from the bent portion is in the range of minimum 20 mm and maximum 35 mm, whereby the temperature of the mercury 6 is around the optimum operating temperature of 40 ° C. It is designed to be kept at.
【００６２】上記気密容器２内には上記水銀のほかに、
アルゴン、またはネオン、もしくはネオン−アルゴンの
ペニングガスからなる希ガスが封入されている。In the airtight container 2, in addition to the mercury,
A rare gas containing argon, neon, or a neon-argon penning gas is sealed.
【００６３】上記低圧水銀放電灯１には、上下に離間し
た複数箇所にランプホルダ３６，３６が取付けられてお
り、これらランプホルダ３６，３６は板ばねなどからな
り外管ジャケット２１の内面に弾接するようになってい
る。このため低圧水銀放電灯１は、これらランプホルダ
３６，３６を介して外管ジャケット２１の所定の位置に
保持されている。これにより気密容器２の外面は外管ジ
ャケット２１の内面と間隙を存している。そして、この
場合、上記細管５の先端、つまり水銀６の凝集箇所と、
外管ジャケット２１の最短距離Ｓが３０mm以上となるよ
うに配置されている。The low-pressure mercury discharge lamp 1 is provided with lamp holders 36, 36 at a plurality of vertically spaced positions. These lamp holders 36, 36 are made of leaf springs or the like and are attached to the inner surface of the outer tube jacket 21. I have come into contact with them. Therefore, the low-pressure mercury discharge lamp 1 is held at a predetermined position on the outer tube jacket 21 via the lamp holders 36, 36. As a result, the outer surface of the airtight container 2 has a gap with the inner surface of the outer tube jacket 21. In this case, the tip of the thin tube 5, that is, the agglomeration point of the mercury 6,
The outer tube jacket 21 is arranged so that the shortest distance S is 30 mm or more.
【００６４】このような低圧水銀放電灯１は、これを点
灯すると陽極３、３と陰極４、４間の交互放電により容
器２内の水銀原子が電離および励起され、この時に水銀
共鳴線である１８５nmおよび２５４nmの紫外線を放射
し、この紫外線は容器２および外管ジャケット２１の管
壁を透過して外部に放出される。このため、外管ジャケ
ット２１の外にある汚水に紫外線を照射し、この汚水を
浄化し、殺菌する。In such a low-pressure mercury discharge lamp 1, when it is turned on, the mercury atoms in the container 2 are ionized and excited by the alternating discharge between the anodes 3, 3 and the cathodes 4, 4, and at this time, they are mercury resonance lines. Ultraviolet rays of 185 nm and 254 nm are emitted, and the ultraviolet rays pass through the container 2 and the tube wall of the outer tube jacket 21 and are emitted to the outside. For this reason, the wastewater outside the outer pipe jacket 21 is irradiated with ultraviolet rays to purify and sterilize the wastewater.
【００６５】このような構造の紫外線照射ユニット２０
は、モジュール上板４１の取付孔４４…に挿入され、外
管ジャケット２１の下端の閉止壁が台座４５の凹部４６
に支承されるともに、上端の開口部２２は取付孔４４内
に位置される。The ultraviolet irradiation unit 20 having such a structure
Are inserted into the mounting holes 44 ... Of the module upper plate 41, and the closing wall at the lower end of the outer tube jacket 21 has the recess 46 of the pedestal 45.
And the upper end opening 22 is located in the mounting hole 44.
【００６６】外管ジャケット２１の上端開口部２２には
ゴムなどの弾性材からなるパッキング２３を介して外蓋
２５により押さえ付けられるようになっている。外蓋２
５はモジュール上板４１の取付孔４４に形成したねじ部
４８に捩じ込まれるようになっている。この外蓋２５の
ねじ込みにより、外蓋２５はモジュール上板４１に螺着
され、パッキング２３を介して外管ジャケット２１の上
端開口部２２を押しており、したがって外管ジャケット
２１は、モジュール上板４１とモジュール下板４２との
間で支持される。The upper opening 22 of the outer tube jacket 21 is pressed by an outer lid 25 via a packing 23 made of an elastic material such as rubber. Outer lid 2
5 is screwed into a screw portion 48 formed in the mounting hole 44 of the module upper plate 41. By screwing the outer lid 25, the outer lid 25 is screwed to the module upper plate 41 and pushes the upper end opening 22 of the outer tube jacket 21 via the packing 23. And the module lower plate 42.
【００６７】上記外蓋２５には、前記容器２から導出さ
れた外部リード線３４を外に引き出すのに充分な大きさ
の導出孔２８が開口されており、外部リード線３４はこ
の導出孔２８を通じてモジュール上板４１の上方に導き
出されている。The outer lid 25 is provided with a lead-out hole 28 having a size large enough to pull out the external lead wire 34 led out from the container 2, and the external lead wire 34 is provided with the lead-out hole 28. Through to the upper side of the module upper plate 41.
【００６８】モジュール上板４１の上部には、図７に示
すように、点灯回路ハウジング５０が設けられており、
この点灯回路ハウジング５０には低圧水銀ランプ１…を
安定点灯させるための点灯回路１３が収容されている。
合計１６本の低圧水銀ランプ２０…から導出された外部
リード線３４は上記点灯回路１３に接続されており、こ
の点灯回路１３を通じて電源に接続されている。A lighting circuit housing 50 is provided above the module upper plate 41 as shown in FIG.
The lighting circuit housing 50 accommodates a lighting circuit 13 for stably lighting the low-pressure mercury lamps 1.
External lead wires 34 led out from a total of 16 low-pressure mercury lamps 20 are connected to the lighting circuit 13 and are connected to a power source through the lighting circuit 13.
【００６９】下水浄水槽５１は、図６に示すように、例
えば蛇行した下水通路を有しており、この蛇行通路の途
中には紫外線照射装置５２が設置されている。紫外線照
射装置５２は、複数組の紫外線照射モジュール５３…に
より構成されており、各紫外線照射モジュール５３…に
はそれぞれ複数の紫外線照射ユニット２０…が取付けら
れている。As shown in FIG. 6, the sewage water purification tank 51 has, for example, a meandering sewage passage, and an ultraviolet irradiation device 52 is installed in the meandering passage. The ultraviolet irradiation device 52 is composed of a plurality of sets of ultraviolet irradiation modules 53 ... And a plurality of ultraviolet irradiation units 20 ... Are attached to each ultraviolet irradiation module 53.
【００７０】本実施例の場合、浄化槽５１の通路に４組
の紫外線照射モジュール５３…が設けられており、これ
ら各紫外線照射モジュール５３…にはそれぞれ４個づつ
の紫外線照射ユニット２０…が設置されている。したが
って紫外線照射ユニット２０…は合計１６個用いられて
いる。In the case of this embodiment, four sets of ultraviolet irradiation modules 53 are provided in the passage of the septic tank 51, and four ultraviolet irradiation units 20 are installed in each of the ultraviolet irradiation modules 53. ing. Therefore, 16 ultraviolet irradiation units 20 are used in total.
【００７１】[0071]
【発明の効果】請求項１によれば、最冷部温度が放電に
起因する熱の影響を受けにくい最冷部を備えた低圧水銀
放電灯を０．５ないし１０．０A ／cm2 範囲内の略矩形
波電流で調光点灯するので最冷部温度の変化がほとんど
なく、紫外線の出力を入力電力に応じて変化させること
ができる。According to the first aspect of the present invention, a low-pressure mercury discharge lamp having a coldest part whose temperature is not easily affected by heat caused by electric discharge falls within a range of 0.5 to 10.0 A / cm @ 2. Since the dimming lighting is performed with a substantially rectangular wave current, the temperature of the coldest part hardly changes, and the output of ultraviolet rays can be changed according to the input power.
【００７２】請求項２によれば、０．５ないし１０．０
A ／cm2 範囲内の第３次高調波電流で調光点灯するの
で、請求項１と同様の効果を生じる。According to claim 2, 0.5 to 10.0
Since the dimming lighting is performed with the third harmonic current within the A / cm2 range, the same effect as that of claim 1 is obtained.
【００７３】請求項３によれば、０．５ないし１０．０
A ／cm2 範囲内でかつ１０ＫＨｚ以上の高周波電流で調
光点灯するので、請求項１と同様の効果を生じる。According to claim 3, 0.5 to 10.0
Since the dimming lighting is performed with a high frequency current of 10 KHz or more within the range of A / cm2, the same effect as in claim 1 is obtained.
【００７４】請求項４によれば、水銀がアマルガム状態
で封入された低圧水銀放電灯を、０．５ないし１０．０
A ／cm2 範囲内の略矩形波電流で調光点灯するので最冷
部温度の変化がほとんどなく、紫外線の出力を入力電力
に応じて変化させることができる。According to the fourth aspect, a low pressure mercury discharge lamp in which mercury is enclosed in an amalgam state is used.
Since the dimming lighting is performed with a substantially rectangular wave current within the A / cm2 range, there is almost no change in the temperature of the coldest part, and the output of ultraviolet rays can be changed according to the input power.
【００７５】請求項５によれば、０．５ないし１０．０
A ／cm2 範囲内の第３次高調波電流で調光点灯するの
で、請求項４と同様の効果を生じる。According to claim 5, 0.5 to 10.0
Since the dimming lighting is performed with the third harmonic current within the range of A / cm2, the same effect as in claim 4 is obtained.
【００７６】請求項６によれば、０．５ないし１０．０
A ／cm2 範囲内でかつ１０ＫＨｚ以上の高周波電流で調
光点灯するので、請求項４と同様の効果を生じる。請求
項７および８によれば、請求項１ないし６いずれかと同
様の効果を奏する。According to claim 6, 0.5 to 10.0
Since the dimming lighting is performed with a high frequency current of 10 KHz or more within the range of A / cm2, the same effect as in claim 4 is obtained. According to claims 7 and 8, the same effect as that of any one of claims 1 to 6 is achieved.
【図１】本発明の紫外線照射装置の一実施例の要部概念
図。FIG. 1 is a conceptual diagram of a main part of an embodiment of an ultraviolet irradiation device of the present invention.
【図２】同実施例の要部拡大断面図。FIG. 2 is an enlarged cross-sectional view of a main part of the same embodiment.
【図３】同実施例と従来技術との紫外線出力量を示す比
較図。FIG. 3 is a comparison diagram showing an ultraviolet ray output amount of the same example and a conventional technique.
【図４】同実施例の下水浄水槽に設置された状態の要部
を示す断面図。FIG. 4 is a cross-sectional view showing a main part in a state of being installed in the sewage water purification tank of the same example.
【図５】同実施例の要部拡大断面図。FIG. 5 is an enlarged cross-sectional view of a main part of the same embodiment.
【図６】同実施例の下水浄水槽に設置された状態を示す
平面図。FIG. 6 is a plan view showing a state of being installed in the sewage water purification tank of the embodiment.
【図７】同実施例の下水浄水槽に設置された状態を示す
断面図。FIG. 7 is a cross-sectional view showing a state of being installed in the sewage water purification tank of the example.
１・・・低圧水銀放電灯、 ２・・・気密容器、 ３、４・・・電極、 ５・・・最冷部、 １５・・・調光点灯手段。 DESCRIPTION OF SYMBOLS 1 ... Low-pressure mercury discharge lamp, 2 ... Airtight container, 3, 4 ... Electrode, 5 ... Coldest part, 15 ... Dimming lighting means.
Claims (8)
けにくい位置に最冷部を有する気密容器と、放電空間の
両端となる気密容器の所定位置に設けられた一対の電極
と、気密容器に封入された希ガスおよび水銀と、を備え
た低圧水銀放電灯と；放電電流をこの電流の流れる方向
に直交する気密容器の放電空間断面積で割った値を電流
密度としたときに、一対の電極間に電流密度が０．５な
いし１０．０A ／cm2 の範囲内となる略矩形波電流を流
すことで放電空間に放電を形成する調光点灯手段と；を
具備していることを特徴とする低圧水銀放電灯点灯装
置。1. An airtight container having a coldest portion at a position where the discharge space and the temperature of the discharge space are unlikely to be affected, a pair of electrodes provided at predetermined positions of the airtight container at both ends of the discharge space, and an airtight container. A low-pressure mercury discharge lamp provided with a rare gas and mercury sealed in a gas; a discharge current divided by a discharge space cross-sectional area of an airtight container orthogonal to the direction of the current flow, where Dimmer lighting means for forming a discharge in the discharge space by flowing a substantially rectangular wave current having a current density in the range of 0.5 to 10.0 A / cm 2 between the electrodes of Low pressure mercury discharge lamp lighting device.
けにくい位置に最冷部を有する気密容器と、放電空間の
両端となる気密容器の所定位置に設けられた一対の電極
と、気密容器に封入された希ガスおよび水銀と、を備え
た低圧水銀放電灯と；放電電流をこの電流の流れる方向
に直交する気密容器の放電空間断面積で割った値を電流
密度としたときに、一対の電極間に電流密度が０．５な
いし１０．０A ／cm2 の範囲内となる第３次高調波電流
を流すことで放電空間に放電を形成する調光点灯手段
と；を具備していることを特徴とする低圧水銀放電灯点
灯装置。2. An airtight container having a discharge space and a coldest portion at a position less susceptible to the temperature of the discharge space, a pair of electrodes provided at predetermined positions of the airtight container at both ends of the discharge space, and an airtight container. A low-pressure mercury discharge lamp provided with a rare gas and mercury sealed in a gas; a discharge current divided by a discharge space cross-sectional area of an airtight container orthogonal to the direction of the current flow, where Dimmer lighting means for forming a discharge in the discharge space by flowing a third harmonic current having a current density in the range of 0.5 to 10.0 A / cm 2 between the electrodes of A low-pressure mercury discharge lamp lighting device characterized by.
けにくい位置に最冷部を有する気密容器と、放電空間の
両端となる気密容器の所定位置に設けられた一対の電極
と、気密容器に封入された希ガスおよび水銀と、を備え
た低圧水銀放電灯と；放電電流をこの電流の流れる方向
に直交する気密容器の放電空間断面積で割った値を電流
密度としたときに、一対の電極間に電流密度が０．５な
いし１０．０A ／cm2 の範囲内でかつ１０ＫＨｚ以上の
高周波電流を流すことで放電空間に放電を形成する調光
点灯手段と；を具備していることを特徴とする低圧水銀
放電灯点灯装置。3. An airtight container having a discharge space and a coldest portion at a position less susceptible to the temperature of the discharge space, a pair of electrodes provided at predetermined positions of the airtight container at both ends of the discharge space, and an airtight container. A low-pressure mercury discharge lamp provided with a rare gas and mercury sealed in a gas; a discharge current divided by a discharge space cross-sectional area of an airtight container orthogonal to the direction of the current flow, where And a dimming lighting means for forming a discharge in a discharge space by flowing a high frequency current having a current density in the range of 0.5 to 10.0 A / cm 2 and 10 KHz or more between the electrodes. Characteristic low-pressure mercury discharge lamp lighting device.
両端となる気密容器の所定位置に設けられた一対の電極
と、気密容器に封入された希ガスおよび水銀アマルガム
と、を備えた低圧水銀放電灯と；放電電流をこの電流の
流れる方向に直交する気密容器の放電空間断面積で割っ
た値を電流密度としたときに、一対の電極間に電流密度
が０．５ないし１０．０A ／cm2 の範囲内の略矩形波電
流を流すことで放電空間に放電を形成する調光点灯手段
と；を具備していることを特徴とする低圧水銀放電灯点
灯装置。4. A low pressure provided with an airtight container having a discharge space, a pair of electrodes provided at predetermined positions of the airtight container at both ends of the discharge space, and a rare gas and mercury amalgam enclosed in the airtight container. Mercury discharge lamp; current density between a pair of electrodes is 0.5 to 10.0 A, when the value obtained by dividing the discharge current by the cross-sectional area of the discharge space of the airtight container orthogonal to the direction of current flow is the current density. A low-pressure mercury discharge lamp lighting device, comprising: a dimming lighting means for forming a discharge in a discharge space by causing a substantially rectangular wave current in the range of / cm 2 to flow.
両端となる気密容器の所定位置に設けられた一対の電極
と、気密容器に封入された希ガスおよび水銀アマルガム
と、を備えた低圧水銀放電灯と；放電電流をこの電流の
流れる方向に直交する気密容器の放電空間断面積で割っ
た値を電流密度としたときに、一対の電極間に電流密度
が０．５ないし１０．０A ／cm2 の範囲内の第３次高調
波電流を流すことで放電空間に放電を形成する調光点灯
手段と；を具備していることを特徴とする低圧水銀放電
灯点灯装置。5. A low-pressure system comprising: an airtight container having a discharge space; a pair of electrodes provided at predetermined positions of the airtight container at both ends of the discharge space; and a rare gas and mercury amalgam enclosed in the airtight container. Mercury discharge lamp; current density between a pair of electrodes is 0.5 to 10.0 A, when the value obtained by dividing the discharge current by the cross-sectional area of the discharge space of the airtight container orthogonal to the direction of current flow is the current density. A low-pressure mercury discharge lamp lighting device, comprising: a dimming lighting means for forming a discharge in a discharge space by flowing a third harmonic current in the range of / cm @ 2.
両端となる気密容器の所定位置に設けられた一対の電極
と、気密容器に封入された希ガスおよび水銀アマルガム
と、を備えた低圧水銀放電灯と；放電電流をこの電流の
流れる方向に直交する気密容器の放電空間断面積で割っ
た値を電流密度としたときに、一対の電極間に電流密度
が０．５ないし１０．０A ／cm2 の範囲内でかつ１０Ｋ
Ｈｚ以上の高周波電流を流すことで放電空間に放電を形
成する調光点灯手段と；を具備していることを特徴とす
る低圧水銀放電灯点灯装置。6. A low pressure provided with an airtight container having a discharge space, a pair of electrodes provided at predetermined positions of the airtight container at both ends of the discharge space, and a rare gas and mercury amalgam enclosed in the airtight container. Mercury discharge lamp; current density between a pair of electrodes is 0.5 to 10.0 A, when the value obtained by dividing the discharge current by the cross-sectional area of the discharge space of the airtight container orthogonal to the direction of current flow is the current density. Within the range of / cm2 and 10K
A low-pressure mercury discharge lamp lighting device, comprising: a dimming lighting means for forming a discharge in a discharge space by flowing a high frequency current of Hz or more.
銀放電灯点灯装置と；低圧水銀放電灯を収容する紫外線
照射装置本体と；を具備していることを特徴とする紫外
線照射装置。7. An ultraviolet irradiation device, comprising: the low-pressure mercury discharge lamp lighting device according to any one of claims 1 to 6; and an ultraviolet irradiation device main body that houses the low-pressure mercury discharge lamp.
銀放電灯点灯装置と；低圧水銀放電灯を収容した光透過
性の外管と；紫外線照射用流体を流通させ、この紫外線
照射用流体に外管を浸漬した紫外線照射装置本体と；を
具備していることを特徴とする紫外線照射装置。8. A low-pressure mercury discharge lamp lighting device according to any one of claims 1 to 6, a light-transmissive outer tube accommodating the low-pressure mercury discharge lamp; An ultraviolet irradiation device comprising: an ultraviolet irradiation device main body in which an outer tube is immersed in a fluid;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7375395A JPH08273872A (en) | 1995-03-30 | 1995-03-30 | Low pressure mercury discharge lamp lighting device and ultraviolet ray irradiation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7375395A JPH08273872A (en) | 1995-03-30 | 1995-03-30 | Low pressure mercury discharge lamp lighting device and ultraviolet ray irradiation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08273872A true JPH08273872A (en) | 1996-10-18 |
Family
ID=13527335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7375395A Pending JPH08273872A (en) | 1995-03-30 | 1995-03-30 | Low pressure mercury discharge lamp lighting device and ultraviolet ray irradiation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08273872A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428203A (en) * | 2015-12-22 | 2016-03-23 | 佛山柯维光电股份有限公司 | UV device with stable output |
| CN105470100A (en) * | 2016-01-06 | 2016-04-06 | 佛山柯维光电股份有限公司 | Ultraviolet lamp with high 185-nanometer radiation efficiency |
-
1995
- 1995-03-30 JP JP7375395A patent/JPH08273872A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428203A (en) * | 2015-12-22 | 2016-03-23 | 佛山柯维光电股份有限公司 | UV device with stable output |
| CN105470100A (en) * | 2016-01-06 | 2016-04-06 | 佛山柯维光电股份有限公司 | Ultraviolet lamp with high 185-nanometer radiation efficiency |
| CN105470100B (en) * | 2016-01-06 | 2018-03-09 | 佛山柯维光电股份有限公司 | A kind of ultraviolet lamp of high 185nm radiation efficiencies |
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