JPS58169862A - Low pressure rare gas discharge lamp device - Google Patents
Low pressure rare gas discharge lamp deviceInfo
- Publication number
- JPS58169862A JPS58169862A JP5333782A JP5333782A JPS58169862A JP S58169862 A JPS58169862 A JP S58169862A JP 5333782 A JP5333782 A JP 5333782A JP 5333782 A JP5333782 A JP 5333782A JP S58169862 A JPS58169862 A JP S58169862A
- Authority
- JP
- Japan
- Prior art keywords
- current
- argon
- discharge lamp
- pressure
- gas discharge
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
- H01J61/16—Selection of substances for gas fillings; Specified operating pressure or temperature having helium, argon, neon, krypton, or xenon as the principle constituent
Landscapes
- Discharge Lamp (AREA)
Abstract
Description
【発明の詳細な説明】
この発明はアルゴ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 argon 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
低圧希カス放電灯は、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ｍ抜の光束
の変化が少ないことなどの特長を有ｔている。またアル
ゴンの陽光柱は近赤外に多数の発光スペクトルをもつた
めに近赤外光源として利用可能である。Similar to fluorescent lamps, low-pressure rare gas discharge lamps utilize light emission 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 at the beginning of m. It has features such as little change. Furthermore, since the argon positive column has many emission spectra in the near-infrared region, it can be used as a near-infrared light source.
一方、低圧希ガスの陽光柱には移動縞として知られる発
光のちらつきがある。移動縞の発生に電流値に関係して
おり、移動縞の存在する下限電流と上限％流がある。従
って移動縞のない安定した放電を得るためには下限電流
以下か。On the other hand, the positive column of low-pressure rare gases exhibits flickering luminescence known as moving stripes. The generation of moving stripes is related to the current value, and there is a lower limit current and an upper limit % current at which moving stripes exist. Therefore, in order to obtain stable discharge without moving stripes, the current must be below the lower limit.
あるいは上限電流以上で点灯すればよい。しかし下限電
流以下では電流値が小さいため大きな光出力が得られず
実用的でなく、上限電流以上で点灯する必賛がある。Alternatively, the light may be turned on when the current exceeds the upper limit. However, if the current value is below the lower limit current, the current value is small and a large light output cannot be obtained, making it impractical, and above the upper limit current it is necessary to turn on the lamp.
ところで限界電流は直流放電において得られたものであ
り、交流電源では様相が異なる。交流放電では％＆値が
変化するために、ある瞬間に上限電流以上であっても、
別の瞬間ＶＣは上限電流以下となる。このために限界電
流を決定することは困難であり、従って交流放電でちら
つきのない発光を得ることは難しかった。By the way, the limiting current is obtained in DC discharge, and the situation is different in AC power supply. In AC discharge, the % & value changes, so even if the current is above the upper limit at a certain moment,
At another instant, VC becomes below the upper limit current. For this reason, it has been difficult to determine the limiting current, and therefore it has been difficult to obtain flicker-free light emission with alternating current discharge.
この発明者らは交流放電でちらつきのない発光が得られ
る低圧希ガス放電灯について鋭意研究を重ねた結果、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、イオン密度は電流に追随せずに一定となり限界
電流が設定できるのではないかと想到し、アルゴンの発
光が主体である低圧希ガス放電灯に関して種々検討の結
果、所定値以上の高周波では放電灯の封入圧力に関連し
て電流の尖頭値で限界電流を決定できることを見出した
、この発明はこの知見に基づいてなされたものである。As a result of extensive research into low-pressure rare gas discharge lamps that can provide flicker-free light emission with alternating current discharge, the inventors found that in high-frequency discharge, the current changes faster than the bipolar diffusion time, so the ion density changes with the current. We came up with the idea that it would be possible to set a limiting current that would be constant without following the current, and after various studies on low-pressure rare gas discharge lamps that mainly emit argon, we found that at high frequencies above a certain value, it is possible to set a limit current that is constant and does not follow the current. It was discovered that the limiting current can be determined by the peak value of the current.The present invention was made based on this knowledge.
即ち、この発明は低圧希ガス放電灯を、アルゴンあるい
はアルゴンを含有し残部がネオンまｆＣ，はヘリウムの
少なくとも一糧からなる混合ガス（ｚｌＴｏｒｒ以上ｇ
Ｔｏｒｒ以下放電収容器に封入してアルゴンの発光が生
体である構成とし、この放電灯ｆ ５ ＫＨｚ以上の胸
波数でかつ放電灯の封入圧力Ｐ（Ｔｏｒｒ）に対して゛
電流の尖頭値Ｉｏｐ（Ａ）（０−ｐｅａｋ電流）がＩｏ
ｐ≧ｔ８／Ｐ０°７である高周波点灯装置で点灯するも
のである。That is, the present invention provides a low-pressure rare gas discharge lamp using argon or a mixed gas containing argon and the remainder being neon or helium.
The configuration is such that the discharge lamp is sealed in a discharge container below Torr and the argon emission is a living body, and the peak value of the current Iop( A) (0-peak current) is Io
It is lit by a high frequency lighting device in which p≧t8/P0°7.
この発明において、アルゴンの発光を得るためには放電
収容器に封入されるガスはアルゴンのみか、あるいはア
ルゴンよりも高い電離電圧のガスを混合した場合に限ら
れる。従ってアルゴンに混合できるガスはヘリウムまた
はネオンである１、但【２その他のガスであっても極め
て微量の場合はこの限りでないが反対にアルゴンが微量
なた約に他のガスの発光の方がアルゴンの発光より多く
なる場合は除かれる。In this invention, in order to obtain argon light emission, the gas sealed in the discharge container must be argon alone or a mixture of gases having a higher ionization voltage than argon. Therefore, the gases that can be mixed with argon are helium or neon1, but [2] This does not apply if the amount of other gases is extremely small; If the amount of light emitted is greater than that of argon, it is excluded.
封入ガスの圧力はｌ Ｔｏｒｒ未満では電極の寿命が蝮
くな９．かつ限界電流が大きくなるため不適当であり、
ｅＴｏｒｒを超えると発光効率が低下するため不適当
である。従って圧力範囲に１−′８Ｔｏｒｒが適当であ
る。9. If the pressure of the filled gas is less than 1 Torr, the life of the electrode will be shortened.9. Moreover, it is inappropriate because the limiting current becomes large.
Exceeding eTorr is inappropriate because the luminous efficiency decreases. Therefore, a suitable pressure range is 1-'8 Torr.
また点灯装置の点灯周波数は、低い場合にはイオン密度
の変動が生じて限界電流が変化すると考えられる。この
周波数の下限は明らかでないが少なくと１発明者らの実
験範囲である５ ＫＨｚ以上では不変であった。Furthermore, if the lighting frequency of the lighting device is low, it is thought that the ion density will fluctuate and the limiting current will change. Although the lower limit of this frequency is not clear, it remains unchanged at least above 5 KHz, which is the experimental range of one of the inventors.
限界電流は発明者らが棟々の実験により、封入圧力と電
流の尖頭値（０−ｐｅａｋ ％流）とに関係し封入圧力
をＰ（Ｔｏｒｒ）としたとき電流の尖頭値Ｉｏｐ（Ａ）
は工０ｐ（Ａ） −１，８／Ｐ０°７であることがわか
った。従ってこれ未満では発光にちらつきが生じ、これ
以上の電流値で点灯すれば発光にちらつきが生じない。The limiting current has been determined by the inventors through extensive experiments to be determined by the relationship between the sealing pressure and the current peak value (0-peak % flow).When the sealing pressure is P (Torr), the current peak value Iop (A )
was found to be 0p(A) -1,8/P0°7. Therefore, if the current value is less than this, flickering will occur in the light emission, and if the current is turned on with a current value higher than this, flickering will not occur in the light emission.
ここで、限界電流を電流の尖頭値（０−ｐｅａｋ電流）
で表わすのに発明名らが正弦波の高周波および矩形波の
高周波で実験を行なった結果。Here, the limiting current is the peak value of the current (0-peak current)
This is the result of experiments conducted by the inventors using a high frequency sine wave and a high frequency rectangular wave.
正弦波の高周波では実験中に電極の損傷などにより電流
の歪みｔ生じることがあったが限界電流全電流の尖頭値
で表示すると一定であった。At the high frequency of the sine wave, current distortion t may occur due to damage to the electrodes during the experiment, but the limiting current was constant when expressed as the peak value of the total current.
また矩形波の筒周波でも正弦波の場合の電流の尖頭値と
ｌ−よソ等しいことが判明した。これは限界電流が電流
の実効値よりも、むしろ電流の尖頭値に影餐會受けるた
めと考えられる。従って限界電流に尖頭値を用いること
により１正弦波以外の電流波形でも使用可能となる。It has also been found that the peak value of the current in the case of a sine wave is equal to the peak value of the current in the case of a sine wave even in the case of a cylinder frequency of a rectangular wave. This is considered to be because the limiting current is influenced by the peak value of the current rather than the effective value of the current. Therefore, by using a peak value for the limiting current, it becomes possible to use current waveforms other than one sine wave.
以下実施例によりこの発明の畦細をさらに説明する。The details of this invention will be further explained below with reference to Examples.
熱電子放射物ｆＸヲ担持したフィラメントコイル電極を
両端に封着した管外径２６闘、長さ４３６ｎのガラス管
にアルゴンガス、アルゴンとネオンの混合ガス、アルゴ
ンとヘリウムの混合ガス、アルゴン・ネオン書ヘリウム
の混合ガスをＩ Ｔｏｒｒ ５８Ｔｏｒｒ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Ｋ ５
ＫＨ２−＝５０ ＫＨｚの高周波電源を用いた。この
電源と上記ランプとの間に適当なインピーダンスを有す
る限流素子全介挿した。ここでは限流素子を葦ねて高周
波電源に接続したり一ケージ形出カドランス會使用した
。また限界電流を定めるために電流値全変化させた場合
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り完全に発光波形が安定する
電流値ケ求めた。Argon gas, a mixed gas of argon and neon, a mixed gas of argon and helium, argon-neon are placed in a glass tube with an outer diameter of 26 mm and a length of 436 nm, with filament coil electrodes carrying a thermionic emitter fX sealed at both ends. A number of lamps were manufactured in which a mixed gas of helium was sealed at a pressure of 58 Torr. K5 to light this lamp
A high frequency power source of KH2-=50 KHz was used. All current-limiting elements with appropriate impedance were inserted between this power source and the lamp. Here, a current limiting element was installed and connected to a high frequency power source, and a one-cage type output cadence was used. In addition, in order to determine the limiting current, we observed the light emission waveform with a photodiode when the current value was completely changed, and determined the current value that would result in uniform light emission over the entire positive column and that the light emission waveform would be completely stable.
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。実験値は○印で示され。The figure shows the relationship between the limiting current and the sealing pressure obtained as a result of the above experiment. Experimental values are indicated by a circle.
実線は限界電流の存在する下限を示している。The solid line indicates the lower limit where the limiting current exists.
なお限界を流は１ｉ［流の尖頭値（０−ｐθａｋ電流）
音用いている。図よジちらつきのない点灯をするための
電流の尖頭値工ｏｐ （Ａ）はＩｏｐ≧１８／ヒ０′で
あることが明らかである。Note that the limit current is 1i [peak value of current (0-pθak current)
Sound is used. As shown in the figure, it is clear that the peak current value op(A) for flickering-free lighting is Iop≧18/hi0'.
以上説明したとおりこの発明によれば、アルゴンの発光
が主体であるランプ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り、ちらつきのない安
定した点灯ができるという効果がある。As explained above, according to the present invention, by lighting a lamp that mainly emits argon light at a high frequency limit current corresponding to the sealing pressure or more, stable lighting without flickering can be achieved.
図はランプの封入圧力と限界電流の関係図である。 代理人 葛 野 伯 − The figure is a diagram showing the relationship between the sealing pressure and the limiting current of the lamp. Agent Haku Kuzuno -
Claims (1)
はヘリウムの少なくとも一種からなる混合ガス’ｊＨＩ
Ｔｏｒｒ以上、 ８Ｔｏｒｒ以下放電収容器に封入した
アルゴンの発光が主体である低圧希ガス放電灯と、この
放電灯ｆ ５ ＫＨｚ以上の周波数で、封入圧力Ｐ （
Ｔｏｒｒ）に対して電流の尖頭値■０１） （Ａ） （
０，−ｐｅａｋ電流）が■Ｏｐ≧１．８７Ｐ０７である
高周波点灯装置によって構成された低圧希カス放電灯装
置。Argon or a mixed gas containing argon and the remainder consisting of at least one of neon or helium
Torr or more, 8 Torr or less A low-pressure rare gas discharge lamp that mainly emits light from argon sealed in a discharge container, and a frequency of this discharge lamp f 5 KHz or more, the enclosed pressure P (
Torr), the peak value of the current ■01) (A) (
A low-pressure rare gas discharge lamp device constituted by a high-frequency lighting device in which the peak current (0, -peak current) satisfies ■Op≧1.87P07.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5333782A JPS58169862A (en) | 1982-03-31 | 1982-03-31 | Low pressure rare gas discharge lamp device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5333782A JPS58169862A (en) | 1982-03-31 | 1982-03-31 | Low pressure rare gas discharge lamp device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58169862A true JPS58169862A (en) | 1983-10-06 |
Family
ID=12939929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5333782A Pending JPS58169862A (en) | 1982-03-31 | 1982-03-31 | Low pressure rare gas discharge lamp device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58169862A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4987843A (en) * | 1988-01-29 | 1991-01-29 | Pegasus Sewing Machine Co., Ltd. | Upper feed adjusting mechanism for seing machine |
-
1982
- 1982-03-31 JP JP5333782A patent/JPS58169862A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4987843A (en) * | 1988-01-29 | 1991-01-29 | Pegasus Sewing Machine Co., Ltd. | Upper feed adjusting mechanism for seing machine |
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