JPS63211553A - Electric discharge lamp - Google Patents
Electric discharge lampInfo
- Publication number
- JPS63211553A JPS63211553A JP4024187A JP4024187A JPS63211553A JP S63211553 A JPS63211553 A JP S63211553A JP 4024187 A JP4024187 A JP 4024187A JP 4024187 A JP4024187 A JP 4024187A JP S63211553 A JPS63211553 A JP S63211553A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- sealed
- quartz
- luminous tube
- 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.)
- Pending
Links
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000010453 quartz Substances 0.000 claims abstract description 23
- 238000005192 partition Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 6
- 239000012466 permeate Substances 0.000 claims 1
- 229910052754 neon Inorganic materials 0.000 abstract description 9
- 229910052734 helium Inorganic materials 0.000 abstract description 6
- 238000001704 evaporation Methods 0.000 abstract description 3
- 230000008020 evaporation Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 29
- 239000000945 filler Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000005297 pyrex Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、放電灯に係り、特に、石英製の発光管から封
入ガスが透過することの対策に好適なガス補給タンクを
そなえた放電灯に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a discharge lamp, and particularly to a discharge lamp equipped with a gas replenishment tank suitable for preventing permeation of sealed gas from a quartz arc tube. Regarding.
石英を発光管とする放電灯に石英を透過しやすい封入ガ
スを封入することは、従来、ブリティッシュ・ジャーナ
ル・オブ・アプライド・フイジッ’） ス（ＢＲＩＴ、
Ｊ、 ＡＰＰＬ、 ＰＨＹＳ） Ｖｏ Ｑ 、 １５
（１９６４年）の８３７頁から８４１頁において、記
載されており、封入ガスの組成や封入ガス圧力と紫外線
出力との関係および管壁温度（最冷点温度）と紫外線出
力との関係について、種々論じられている。Filling a discharge lamp with a quartz luminous tube with a filler gas that easily passes through the quartz has been described in the British Journal of Applied Physics (BRIT).
J, APPL, PHYS) Vo Q, 15
(1964), pp. 837 to 841, and there are various explanations regarding the relationship between the composition of the filler gas, the pressure of the filler gas, and the ultraviolet output, and the relationship between the tube wall temperature (coldest point temperature) and the ultraviolet output. being discussed.
しかしながら、上記従来技術では、放電灯の働程中にお
ける、封入ガス（ＮｅやＨｓ ）の石英発光管を通して
逃げる問題については論じられていない。特に、放電灯
の入力を大きくしていき、紫外線の出力を大きく得よう
とする場合には、この封入ガスであるＮｅやＨａの石英
発光管を透過して拡散し、封入ガスの圧力低下が生じ、
電極の蒸発を早めて、放電灯の寿命を短かくするが、こ
れらの封入ガスの圧力低下による短寿命については、配
慮がされていない。However, the above-mentioned prior art does not discuss the problem of escape of the filler gas (Ne or Hs) through the quartz arc tube during the operation of the discharge lamp. In particular, when increasing the input power of the discharge lamp to obtain a large output of ultraviolet rays, the filled gas (Ne or Ha) passes through the quartz arc tube and diffuses, reducing the pressure drop of the filled gas. arise,
This speeds up the evaporation of the electrodes and shortens the lifespan of the discharge lamp, but no consideration is given to the shortened lifespan due to the pressure drop of the filled gas.
本発明の目的は発光管中の封入ガス圧の低下による電極
の蒸発による短寿命を防止した放電灯を提供することに
ある。SUMMARY OF THE INVENTION An object of the present invention is to provide a discharge lamp in which shortening of life due to evaporation of electrodes due to a decrease in gas pressure in the arc tube is prevented.
上記目的は、石英の発光管の一部に補給用ガスを封入し
たタンクを隔壁を介して接続し、該隔壁を通して働程中
に徐々に封入ガスを補給することにより達成される。The above object is achieved by connecting a tank filled with replenishment gas to a part of the quartz arc tube via a partition wall, and gradually replenishing the filled gas through the partition wall during the working process.
不活性ガスのＮｅやＨｅは、ＡｒやＫｒ、Ｘｅに比較し
て１石英を通過しやすい性質があるが、一方では、その
電離電圧が高いために、放電灯入力の増大に効果があり
、たとえば、低圧水銀灯の高出力化に対して紫外線出力
を向上させるのにその効果がある。Inert gases such as Ne and He have the property of passing through quartz more easily than Ar, Kr, and Xe, but on the other hand, because of their high ionization voltage, they are effective in increasing the discharge lamp input. For example, it is effective in improving the ultraviolet output for high-output low-pressure mercury lamps.
石英を発光管に使用するのは、紫外線を透過しやすいた
め、紫外線放射源として有効な発光管となるためである
。The reason why quartz is used for the arc tube is that it easily transmits ultraviolet rays, making it an effective arc tube as a source of ultraviolet radiation.
以上のように、紫外線放射光源として発光管に石英を使
用し、封入ガスにＮｅやＨｅを封入して、その出力を向
上させることができるが、働程中の石英を通してＮｅや
Ｉ−１ｅが逃げて減圧となり、電極の消耗による短寿命
を防止しなければならない。As described above, the output can be improved by using quartz in the arc tube as an ultraviolet radiation source and filling the gas with Ne or He, but Ne and I-1e pass through the quartz during the working process. It is necessary to prevent the electrode from escaping and becoming depressurized and shortening its life due to wear and tear.
このためには、Ｎ ｅ ’ｅ’ Ｈｅなど封入ガスの補
助タンクを発光管に隔壁を介して接続して、働程中、徐
々に発光管へＮｅやＨｅの封入ガスを補給することによ
り封入ガスの減圧を防止できる。To do this, an auxiliary tank containing a filler gas such as Ne 'e' He is connected to the arc tube through a partition, and the filler gas such as Ne or He is gradually supplied to the arc tube during the working process. Can prevent gas depressurization.
以下、本発明の一実施例を第１図により説明する。 An embodiment of the present invention will be described below with reference to FIG.
石英の発光Ｉ￥！１の両端に電子放射物質を塗着したフ
ィラメント６を有した放電灯に、発光管１の所定の位置
に接続した封入ガス補給用タンク２を有し、該発光管１
と補給用タンク２とは、隔壁３により仕切られている。Quartz luminescence I￥! A discharge lamp having a filament 6 coated with an electron-emitting material at both ends of the discharge lamp 1 has a filled gas replenishment tank 2 connected to a predetermined position of the arc tube 1, and the arc tube 1
and the supply tank 2 are separated by a partition wall 3.
発光管１の排気管７を介して発光管１内の空気を排気し
、封入ガス４としてＮｅを１，５Ｔｏｒｒ封入する他、
Ｈｇを所定量封入したのち排気７をシールオフする。し
かるのち、補給用タンク２の排気管８を介してタンク２
内の空気を排気したのち、発光管１に封入した封入ガス
のうち石英を透過するガス（ここではＮｅガスを）所定
圧力Ｐｔｏｒｒ封入し、排気管８をシールオフする。こ
こで、補助タンク２は、働程中の温度が低ければ（約１
００℃以下）石英ガラスでよく。In addition to exhausting the air inside the arc tube 1 through the exhaust pipe 7 of the arc tube 1 and filling it with Ne as the filler gas 4 at 1.5 Torr,
After filling a predetermined amount of Hg, the exhaust gas 7 is sealed off. After that, the tank 2 is
After evacuating the air inside, the arc tube 1 is filled with a gas (here, Ne gas) that passes through quartz out of the gas sealed therein at a predetermined pressure Ptorr, and the exhaust pipe 8 is sealed off. Here, if the temperature of the auxiliary tank 2 is low during the working process (approximately 1
(00℃ or less) quartz glass is suitable.
温度が高い場合には、硬質ガラス（パイレックス等）を
使用する。また、隔壁３は、石英の薄い肉厚のもの（た
とえば０．２ ａｍ程度）か、Ｂ ｘ Ｏｓ等ＮｅやＨ
ｅを石英より透過しやすい材料を使う。If the temperature is high, use hard glass (Pyrex, etc.). The partition wall 3 may be made of quartz with a thin wall thickness (for example, about 0.2 am) or made of Ne or H such as B x Os.
Use a material that transmits e more easily than quartz.
ここで、石英発光管の温度、表面積によって発光管内の
Ｎｅ又はＨｅの逃げる量が決まる。そこで、補給するに
は、隔壁の面積と温度とタンクのガス圧力によって鋤程
中徐々に補給でき９発光管内の圧力が一定となるように
条件を決めてやればよい。−例として、発光管壁温度が
、１８０℃。Here, the amount of Ne or He escaping within the arc tube is determined by the temperature and surface area of the quartz arc tube. Therefore, in order to replenish the gas, conditions should be determined so that the area and temperature of the partition wall and the gas pressure in the tank can be gradually replenished during the plowing process and the pressure within the arc tube 9 remains constant. - As an example, the wall temperature of the arc tube is 180°C.
表面が２３０ｄ、当初のＮｅの封入圧力が１．５Ｔｏｒ
ｒのとき、補給タンクがない場合には、３０００ｈで発
光管内のＮｓの圧力は、Ｑ、５Ｔｏｒｒとなり、電極周
辺がスパッターにより黒化し、さらに放電開始電圧が非
常に高くなり、所定の点灯回路では始動しなくなった６
同じ仕様の発光管の一部に隔壁の面積０．５ ｃｄ、そ
の厚さ０．５閣、タンクの容積は、発光管の容積の約２
分の１とし、タンク内への封入圧力を約１気圧としたと
き、３０００ｈの点灯後の発光管内の封入ガス圧力は、
１．３Ｔｏｒｒであり、当初と殆んど変化がなく、電子
放射物質の飛散状態は封入ガスをＡｒとしたときとほぼ
同程度であり、かつ放電開始型°圧の上昇はなく。The surface is 230d, and the initial pressure of Ne is 1.5 Torr.
When r, if there is no replenishment tank, the pressure of Ns in the arc tube becomes Q, 5 Torr in 3000 hours, the area around the electrode becomes black due to sputtering, and furthermore, the discharge starting voltage becomes extremely high, and in the specified lighting circuit. No longer starts 6
In a part of the arc tube with the same specifications, the area of the partition wall is 0.5 cd, its thickness is 0.5 cd, and the volume of the tank is about 2 the volume of the arc tube.
When the pressure in the tank is approximately 1 atm, the gas pressure in the arc tube after 3000 hours of lighting is:
The pressure was 1.3 Torr, which was almost unchanged from the beginning, the state of scattering of the electron emitting material was almost the same as when the filler gas was Ar, and there was no increase in the discharge starting pressure.
正常に点灯可能であった。It was possible to light up normally.
なお、上記は一実施例であるが、隔壁の面積や厚さ、お
よびタンクの容積や封入圧力は、程々の組合せが可能で
ある。また、隔壁の形状、“材質もＢ ｓ Ｏｓなど選
択できることは云うまでもない。Although the above is an example, the area and thickness of the partition wall, the volume of the tank, and the sealing pressure can be appropriately combined. Furthermore, it goes without saying that the shape and material of the partition walls can be selected, such as BsOs.
たとえば、タンクの容積を小さくし、封入圧力を１気圧
以上とするようなことも可能である。For example, it is possible to reduce the volume of the tank and increase the sealing pressure to 1 atmosphere or more.
本発明によれば、石英を透過するようなガスを封入して
も、逃げた分だけ補給することができるので、電＃１電
圧の高いＮｅやＨｅなどのガスを封入ガスとして使用で
き、紫外線出力の高い放電灯の長寿命化ができる効果が
ある。According to the present invention, even if a gas that passes through quartz is sealed, it is possible to replenish the amount that escapes, so gases such as Ne and He, which have a high voltage #1, can be used as the sealed gas, and ultraviolet rays This has the effect of extending the life of high-output discharge lamps.
第１図は、本発明の実施例を示す概念図である。
１・・・石英発光管、２・・・補給用タンク（石英また
は硬質ガラス）、３・・・隔壁（石英や８２０ ｓ ｅ
ｔｃ ）、ｆ ｊ 図
１卒先筐FIG. 1 is a conceptual diagram showing an embodiment of the present invention. 1... Quartz arc tube, 2... Supply tank (quartz or hard glass), 3... Partition wall (quartz or 820 s e
tc ), f j Figure 1.
Claims (1)
しやすいガスをガスタンクから自動的に補給する手段を
有したことを特徴とする放電灯。 ２、上記ガスタンクの温度が上記放電灯の動作中の上記
発光管の温度より十分低い温度であることを特徴とする
第１項の放電灯。 ３、上記発光管と上記ガスタンクとの境界隔壁材料が、
石英か、それよりも上記補給ガスを透過しやすいもので
あることを特徴とする第１項の放電灯。[Scope of Claims] 1. A discharge lamp characterized in that a quartz tube is used as an arc tube, and a discharge lamp is provided with means for automatically replenishing a gas from a gas tank with a gas that easily permeates through quartz as a component of the sealed gas. 2. The discharge lamp according to item 1, wherein the temperature of the gas tank is sufficiently lower than the temperature of the arc tube during operation of the discharge lamp. 3. The boundary partition wall material between the arc tube and the gas tank is
The discharge lamp according to item 1, characterized in that it is made of quartz or a material more easily permeable to the supplementary gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4024187A JPS63211553A (en) | 1987-02-25 | 1987-02-25 | Electric discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4024187A JPS63211553A (en) | 1987-02-25 | 1987-02-25 | Electric discharge lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63211553A true JPS63211553A (en) | 1988-09-02 |
Family
ID=12575216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4024187A Pending JPS63211553A (en) | 1987-02-25 | 1987-02-25 | Electric discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63211553A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7381111B2 (en) * | 2004-10-18 | 2008-06-03 | Mirae Corporation | Method of manufacturing flat fluorescent lamp |
-
1987
- 1987-02-25 JP JP4024187A patent/JPS63211553A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7381111B2 (en) * | 2004-10-18 | 2008-06-03 | Mirae Corporation | Method of manufacturing flat fluorescent lamp |
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