JPS58119151A - Low pressure rare gas discharge lamp device - Google Patents
Low pressure rare gas discharge lamp deviceInfo
- Publication number
- JPS58119151A JPS58119151A JP247682A JP247682A JPS58119151A JP S58119151 A JPS58119151 A JP S58119151A JP 247682 A JP247682 A JP 247682A JP 247682 A JP247682 A JP 247682A JP S58119151 A JPS58119151 A JP S58119151A
- Authority
- JP
- Japan
- Prior art keywords
- current
- neon
- sealed
- lamp
- argon
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
- H01J61/72—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of easily vaporisable metal vapour, e.g. mercury
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Discharge Lamp (AREA)
Abstract
Description
【発明の詳細な説明】
この発明はネオンの発光を利用する低圧希ガス放電灯と
その点灯装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a low pressure rare gas discharge lamp that utilizes neon light emission and a lighting device thereof.
螢光ランプと同様に低圧ガスの陽光柱の発光を利用する
低圧希ガス放電灯は、螢光ランプに比べて寿命中の劣化
が少ない゛こと、温度依存性が少ないこと、始動後の光
束の変化が少ないことなどの特長を有している。中でも
ネオンの発光は赤色であるために赤色光源を使用するフ
ァクシミリや光学式文字読取横用光源として好適なもの
である。Similar to fluorescent lamps, low-pressure rare gas discharge lamps utilize the light emitted from a positive column of low-pressure gas. Compared to fluorescent lamps, low-pressure rare gas discharge lamps have less deterioration during their lifetime, less temperature dependence, and a lower luminous flux after starting. It has the characteristics of little change. Among them, neon emits red light, so it is suitable as a horizontal light source for facsimiles and optical character reading that use a red light source.
一方、低圧希ガスの陽光柱には移動稿として知られる発
光のちらつきがある。移動稿の発生は電流値に関係して
おり、移動稿の存在する下限電流と上限電流がある。従
って移動稿のない安定した放電を得るためには下限電流
以下あるいは上限電流以上で点灯すれば良い。しかし下
限電流以下では電流値が小さいため、に大きな光出力を
得られず実用的でない。従って上限電流以上で点灯する
必要がある。On the other hand, the positive column of low-pressure rare gases has a flicker of luminescence known as moving light. The occurrence of a moving document is related to the current value, and there is a lower limit current and an upper limit current at which a moving document exists. Therefore, in order to obtain stable discharge without moving plates, it is sufficient to turn on the lamp at a current below the lower limit current or above the upper limit current. However, since the current value is small below the lower limit current, it is not possible to obtain a large optical output and it is not practical. Therefore, it is necessary to turn on the lamp at a current higher than the upper limit.
ところで、この上限電流は一’ Ｐｕｐｐ の限界電流
として知られてお一す、限界電流を工。とすると恥−＝
、 Ｃ／Ｐで表わされる・。この式を改善したものとし
てＲｕｔｓｃｈｅｒとｙｏｊａｃｇｅｋのＩＣ＝ ｃ／
ｐγがある。ここでＣとγは希ガスによって異なる定数
であり、ｐは圧力（Ｔｏｒｒ）である。ネオンの場合は
Ｃ＝７．γ＝１である。By the way, this upper limit current is known as the limit current of 1' Pupp. That's a shame.
, expressed as C/P. As an improved version of this formula, Rutscher and Yojacgek's IC = c/
There is pγ. Here, C and γ are constants that differ depending on the rare gas, and p is the pressure (Torr). For neon, C=7. γ=1.
しかし以上は直流放電によって得られた値であル、交流
放電では様相か異なる。交流放電では電流値が変化する
ために、ある瞬間に限界電流以上であっても、別の瞬間
には限界電流以下となる。このために限界電流を決定す
ることは困難である。一方、高周波放電では両極性拡散
時間に比べて電流の変化が速いために、イオン桁度は電
流に追随せず一定となり、限界電流が設定できる。However, the above values are obtained by direct current discharge, and the situation is different with alternating current discharge. In alternating current discharge, the current value changes, so even if the current is above the limit current at one moment, it will be below the limit current at another moment. This makes it difficult to determine the limiting current. On the other hand, in high-frequency discharge, since the current changes faster than the bipolar diffusion time, the ion magnitude does not follow the current and remains constant, allowing a limit current to be set.
また限界電流は圧力に依存するが、ランプの圧力は発光
効率や寿命の点を考慮して決定する必要がある。一方、
安定した放電をするためには限界電流以上で点灯しなけ
ればならない。従って限界電流はランプの設計や点灯装
置の設計およびランプの使用範囲を制約することになる
。Furthermore, the limiting current depends on the pressure, and the pressure of the lamp must be determined in consideration of luminous efficiency and lifespan. on the other hand,
In order to have a stable discharge, the lamp must be lit at a current exceeding the limit. Therefore, the limiting current limits the design of the lamp, the design of the lighting device, and the range of use of the lamp.
このような不都合を改善するためには限界電流を低下さ
せる必要がある。In order to improve such disadvantages, it is necessary to lower the limiting current.
この発明は上記の欠点Ｋかんがみ、限界電流を低下させ
たネオンの発光を利用する低圧希ガス放電灯とその高周
波点灯装置を得ることを目的としている。In view of the above-mentioned disadvantage K, the object of the present invention is to provide a low-pressure rare gas discharge lamp that utilizes neon light emission with a reduced limiting current, and a high-frequency lighting device thereof.
さて限界電流は希ガスの種類によって異なるが、２種類
の希ガスを混合した場合、限界電流は中間の値を持つと
予想される。ネオンよ−り限界電流の小さな希ガスとし
てはアルゴン、クリプトン、キセノンがある。一方これ
らの希ガスはネオンよ、り電離電圧が低く、ネオンと混
合した場合、ネオンよシむしろそれらのガスが発光する
ととくなる。従ってネオンの発光を得ることを目的とし
たランプにそれらのガスを混合した場合、極めて微小な
限られた量しか混合できない。Now, the limiting current differs depending on the type of rare gas, but when two types of rare gases are mixed, the limiting current is expected to have an intermediate value. Rare gases with smaller limiting currents than neon include argon, krypton, and xenon. On the other hand, these rare gases have a lower ionization voltage than neon, and when mixed with neon, the gases emit light rather than the neon. Therefore, when these gases are mixed in a lamp intended to emit neon light, only a very small and limited amount can be mixed.
ネオンとアルゴンの混合ガスからなる低圧希ガス放電灯
において、主としてネオンが発光する条件が、混合比と
封入圧力の関係として特願昭５６−１６７５０２号にお
いて与えられており、封入圧力をＰ（Ｔｏｒｒ）とした
とき、アルゴンの混合比Ａ（４）はＡ≦５Ｐ で表わ
される。In a low-pressure rare gas discharge lamp consisting of a mixed gas of neon and argon, the conditions under which neon mainly emits light are given in Japanese Patent Application No. 167502/1986 as the relationship between the mixture ratio and the filling pressure, and the filling pressure is P (Torr). ), the argon mixing ratio A(4) is expressed as A≦5P.
この発明ではネオンにアルゴンを微小混合するととＫよ
り、主としてネオンの発光が得られるランプについて高
周波点灯時の限界電流を得て、ネオン単独の場合よ、り
小電流で使用可能な低圧希ガス放電灯装置を可能とした
のである。In this invention, by mixing a small amount of argon with neon, the limiting current at high frequency operation can be obtained for a lamp that mainly emits neon, and a low-pressure rare gas discharge that can be used with a smaller current than when neon alone is used. This made electric lighting possible.
以下実施例によルさらに詳細に説明する。A more detailed explanation will be given below based on examples.
熱電子放射物質を担持したフィラメントコイル電極を両
端忙封着した管外径２６ｍ、長さ４３ε雪のガラス管に
アルゴンの混合比Ａ（４）がＡ≦５Ｐ であり、残部
がネオンである混合ガスをＬ ５ Ｔｏｒｒ ＝ ８
Ｔｏｒｒ封入した多数のランプを製作した。このランプ
を点灯するためＩ／Ｃ５ＫＨｚ〜５０ ＫＨｚ （Ｄ高
周波電源を用いた。この電源と上記う゛ンプとの間に適
当なインピーダンスを有する限流素子を介挿した。ここ
では限流素子を兼ねて高周波電源に一読したリーケージ
形出カドランスを使用した。また限界電流を定めるため
に電流値を変化させた場合の発光波形をフォトダイオー
ドで観察して、陽光柱全域にわたって一様な発光とな勺
完全に発光波形が安定す−る電流値を求めた。A glass tube with an outer diameter of 26 m and a length of 43ε, in which a filament coil electrode carrying a thermionic emissive material is sealed at both ends, is mixed with argon at a mixing ratio A (4) of A≦5P, and the remainder is neon. Gas L 5 Torr = 8
A number of Torr encapsulated lamps were fabricated. In order to light up this lamp, an I/C 5KHz to 50KHz (D high frequency power source was used. A current limiting element having an appropriate impedance was inserted between this power source and the above-mentioned amplifier. Here, it also served as a current limiting element. In order to determine the limiting current, we used a leakage-type output lance for a high-frequency power source.Also, we used a photodiode to observe the emission waveform when the current value was changed to determine the uniform emission across the entire positive column. The current value at which the emission waveform is completely stabilized was determined.
図は上記の実験の結果得られた限界電流と封入圧力の関
係を示す図である。斜線で示された範囲がこの実験で得
られた限界電流値の存在する領域である。この領域の上
限はネオン単独を封入した場合であって、この領域だけ
ネオン単独の封入より使用できる電流範囲が増加したこ
とになる。なお限界電流として電流の尖頭値（０−ｐｅ
ａｋ電流）を用いている。図から限界電流Ｉｃ（Ａ）の
低下した範囲は、封入圧力をＰ（Ｔｏｒｒ）としたとき
、１．５≦Ｐ≦８の範囲で５．３／Ｐ≦恥≦７／Ｐ１・
１ で表わされる。The figure is a diagram showing the relationship between the limiting current and the sealing pressure obtained as a result of the above experiment. The shaded range is the region where the limiting current value obtained in this experiment exists. The upper limit of this region is when neon alone is encapsulated, and the usable current range is increased in this region compared to when neon alone is encapsulated. Note that the peak value of current (0-pe
ak current) is used. From the figure, the range in which the limiting current Ic (A) decreased is 5.3/P≦Shame≦7/P1 in the range of 1.5≦P≦8, where the sealing pressure is P (Torr).
It is expressed as 1.
ところで点灯周波数が低い場合にはイオン密度の変動が
生じて限界電流は変化すると考えられる。この周波数の
下限は明らかではないが少なくとも発明者の実験範囲で
ある５ ’に’Ｅ’ｚ以上では不変であった。By the way, when the lighting frequency is low, it is thought that the ion density fluctuates and the limiting current changes. Although the lower limit of this frequency is not clear, it remains unchanged at least above 5' and 'E'z, which is the experimental range of the inventor.
また限界電流が電流の尖頭値（’０−ｐ６ａｋ’電流）
で表わされているのは次の理由による。以上示した実験
は全て正弦波の高周波による本のであるが、実験中に電
極の損傷などにより電流の歪みを生じることがあった。Also, the limiting current is the peak value of the current ('0-p6ak' current)
The reason for this expression is as follows. All of the experiments shown above were performed using high frequency sinusoidal waves, but during the experiments there were cases where the current was distorted due to damage to the electrodes, etc.
しかしその場合においても限界電流を電流の尖頭値で表
示すると一定であった。そこで発明者らは矩形波で実験
を行ったが、この場合も限界電流は正弦波の場合の尖頭
値電流とほぼ等しいことが判明した。これは電子密度が
電流の実効値よルむしろ尖頭値電流に影響を受けるため
と考えられる。従って限界電流に尖頭値を用いるととに
より、正弦波から弱干はずれた電流波形でも使用可能と
なるのである。However, even in that case, the limiting current was constant when expressed as the peak value of the current. Therefore, the inventors conducted an experiment using a rectangular wave, and found that in this case as well, the limiting current was approximately equal to the peak value current in the case of a sine wave. This is thought to be because the electron density is affected by the peak current rather than the effective value of the current. Therefore, by using a peak value for the limiting current, it is possible to use a current waveform that slightly deviates from a sine wave.
なお封入圧力をＬ ５ Ｔｏｒｒ〜８ Ｔｏｒｒとした
のは次の理由による。圧力が低いほど限界電流は大きく
彦シ、また長寿命化が困難となるために実用的でない。The reason why the sealing pressure was set to L 5 Torr to 8 Torr is as follows. The lower the pressure, the higher the limiting current, and the more difficult it is to extend the lifespan, making it impractical.
また８Ｔｏｒｒ以上と圧力が高くなると限界電流はネオ
ン単独封入の値に近くなり。Also, when the pressure becomes higher than 8 Torr, the limiting current becomes close to the value of neon alone.
また値が低下するので、さらに限界電流を低下させる必
要性が小さくなるためである。Furthermore, since the value decreases, there is less need to further reduce the limiting current.
以上説明したとうりこの発明によれば、アルゴンを微量
含むネオンとアルゴンの混合ガスを封入した低圧希ガス
放電灯をその封入圧力に対応した高周波の限界電流以上
で点灯することによシ、ネオン単独を封入したランプに
比べて小電流で移動稿のない放電が可能な低圧希ガス放
電灯装置を得られるという効果がある。As explained above, according to the present invention, by lighting a low-pressure rare gas discharge lamp filled with a mixed gas of neon and argon containing a small amount of argon at a high frequency limit current corresponding to the filling pressure, the neon This has the effect of providing a low-pressure rare gas discharge lamp device that is capable of discharging at a smaller current and without moving plates than a lamp in which only one gas is enclosed.
図はランプ封入圧力と限界電流との関係を示す図である
。
何人 葛野信−The figure is a diagram showing the relationship between lamp sealing pressure and limiting current. How many people Shin Kuzuno?
Claims (1)
を放電するようＫしたものにおいて。 上記混合ガスの封入圧力をＰ （ＴＯｒｒ） ＃アルゴ
ンの混合比をム（慢）としたとき １．５≦Ｐ≦８ の
範囲でム≦５ｒ−２（％）である低圧希ガス放電灯と。 この放電灯を５ ＫＨｚ以上の周波数で電流の尖頭値工
（ａ） （ｏ −ｐｅａｋ電流）が ５．３／Ｐ≦工
。１≦７／Ｐ１．１ｐ である高周波点灯装置によって構成された低圧希ガス放
電灯装置。[Claims] In a device in which a mixed gas of neon and argon is sealed in a discharge container and the discharge is discharged. When the filling pressure of the above mixed gas is P (TOrr) and the mixing ratio of argon is Mu (argon), it is a low-pressure rare gas discharge lamp with Mu≦5r-2 (%) in the range of 1.5≦P≦8. . The current peak value of this discharge lamp at a frequency of 5 KHz or higher (a) (o-peak current) is 5.3/P≦. A low-pressure rare gas discharge lamp device configured with a high-frequency lighting device where 1≦7/P1.1p.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP247682A JPS58119151A (en) | 1982-01-11 | 1982-01-11 | Low pressure rare gas discharge lamp device |
| US06/451,230 US4461981A (en) | 1981-12-26 | 1982-12-20 | Low pressure inert gas discharge device |
| EP82306972A EP0083241B1 (en) | 1981-12-26 | 1982-12-24 | A low pressure inert gas discharge lamp |
| DE8282306972T DE3275787D1 (en) | 1981-12-26 | 1982-12-24 | A low pressure inert gas discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP247682A JPS58119151A (en) | 1982-01-11 | 1982-01-11 | Low pressure rare gas discharge lamp device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58119151A true JPS58119151A (en) | 1983-07-15 |
| JPS6329931B2 JPS6329931B2 (en) | 1988-06-15 |
Family
ID=11530382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP247682A Granted JPS58119151A (en) | 1981-12-26 | 1982-01-11 | Low pressure rare gas discharge lamp device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58119151A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62117299A (en) * | 1985-11-15 | 1987-05-28 | 株式会社ト−オ−電子 | Burning of neon glow lamp |
| US5159237A (en) * | 1987-08-10 | 1992-10-27 | Mitsubishi Denki Kabushiki Kaisha | Green-light-emitting rare gas discharge lamp |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03139832A (en) * | 1989-10-25 | 1991-06-14 | Ebara Corp | Jet scrubber |
| JP2658506B2 (en) | 1990-06-06 | 1997-09-30 | 三菱電機株式会社 | Rare gas discharge fluorescent lamp device |
| US11288745B2 (en) | 2008-04-21 | 2022-03-29 | Bgc Partners, Inc. | Trading orders with decaying reserves |
| US7747498B2 (en) | 2008-04-21 | 2010-06-29 | Bgc Partners, Inc. | Trading orders with decaying reserves |
-
1982
- 1982-01-11 JP JP247682A patent/JPS58119151A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62117299A (en) * | 1985-11-15 | 1987-05-28 | 株式会社ト−オ−電子 | Burning of neon glow lamp |
| US5159237A (en) * | 1987-08-10 | 1992-10-27 | Mitsubishi Denki Kabushiki Kaisha | Green-light-emitting rare gas discharge lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6329931B2 (en) | 1988-06-15 |
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