JPH0524619B2 - - Google Patents
Info
- Publication number
- JPH0524619B2 JPH0524619B2 JP58086989A JP8698983A JPH0524619B2 JP H0524619 B2 JPH0524619 B2 JP H0524619B2 JP 58086989 A JP58086989 A JP 58086989A JP 8698983 A JP8698983 A JP 8698983A JP H0524619 B2 JPH0524619 B2 JP H0524619B2
- Authority
- JP
- Japan
- Prior art keywords
- wire
- lead
- lighting tube
- sealing
- iron
- 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.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/02—Details
- H05B41/04—Starting switches
Landscapes
- Discharge Lamp (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は点灯管に係り、特に高圧蒸気放電灯な
どの放電灯の始動補助用に使用する点灯管の改良
に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to lighting tubes, and more particularly to improvements in lighting tubes used to assist in starting discharge lamps such as high-pressure steam discharge lamps.
従来例の構成と問題点
点灯管は、放電気体を封入した気密容器内に、
ステムに植立された内部線に溶接などにより支持
された熱応動素子からなる電極を有し、この電極
間での放電による発熱によつて電極同士が接触し
て放電が断たれて、電極が離間する際に電流の瞬
断によつてインダクタンス素子の両端にパルス電
圧を発生させるものである。Structure and problems of conventional examples A lighting tube is placed in an airtight container containing a discharger.
It has an electrode made of a thermally responsive element supported by welding or the like on an internal wire planted in the stem, and the heat generated by the discharge between the electrodes causes the electrodes to come into contact with each other and the discharge is cut off, causing the electrode to When the inductance element is separated, a pulse voltage is generated across the inductance element by a momentary interruption of the current.
かかる点灯管では従来、気密封着のためにジユ
メツト線を軟質ガラスと溶着する方法が採用され
ており、この場合は内部線には鉄−ニツケルメツ
キ線などを封着用導入線であるデユメツト線とバ
ツト溶接により継ぎ合せたものが使用されてお
り、また外部リード線も鉄−ニツケル合金線など
をデユメツト線と溶接したものが使用されている
ので、内部線−封着用導入線−外部リード線はそ
れぞれ、鉄−ニツケルメツキ線とデユメツト線と
鉄−ニツケル合金線との三者を接合した構造とな
り、コスト高と溶接部の信頼性に欠ける難点があ
つた。 Conventionally, in such lighting tubes, a method has been adopted in which a aluminum wire is welded to soft glass for airtight sealing, and in this case, an iron-nickel plated wire or the like is used as the internal wire and a aluminum wire, which is an introduction wire for sealing, is used. They are joined by butt welding, and the external lead wires are made by welding iron-nickel alloy wires with dumet wires, so the internal wires, sealing lead-in wires, and external lead wires are Each of these has a structure in which iron-nickel metal wire, dumet wire, and iron-nickel alloy wire are joined, and these have the disadvantages of high cost and lack of reliability in the welded parts.
他方、放電気体に水素を含む混合気体、たとえ
ば、ヘリウム−水素−アルゴンを用いた点灯管
は、その高いパルス電圧とパルス発生回数が多
く、初期グロー時間の短い優れた特性を有してい
るが、この特性を利用してメタルハライドランプ
や高圧ナトリウム灯などの難始動性のランプを始
動させるために、この点灯管を外管内に組込んで
使用する場合には、ランプ点灯時の高温にさらさ
れるし、点灯管自身が点滅をくり返したときも自
己発熱によつて温度が上昇するので、点灯管の温
度が150℃〜350℃の高温にも達する。 On the other hand, lighting tubes using a gas mixture containing hydrogen in the discharge material, such as helium-hydrogen-argon, have excellent characteristics such as high pulse voltage, large number of pulses, and short initial glow time. However, in order to utilize this characteristic to start difficult-to-start lamps such as metal halide lamps and high-pressure sodium lamps, when this lighting tube is installed inside the outer tube, it is difficult to handle the high temperatures that occur when the lamp is lit. In addition, when the lighting tube itself repeatedly blinks, the temperature rises due to self-heating, so the temperature of the lighting tube can reach high temperatures of 150°C to 350°C.
前記のような封着用導入線にデユメツト線を使
用した点灯管の場合には、このような高温雰囲気
にさらされると、デユメツト線の酸化被膜を水素
が還元し、ガラスとの封着面に沿つて気密性がそ
こなわれ、リークが発生し、動作不能となる欠点
があつた。 In the case of a lighting tube that uses a dumet wire as the lead-in wire for sealing as described above, when exposed to such a high temperature atmosphere, hydrogen reduces the oxide film of the dumet wire, causing damage to the sealing surface with the glass. Along the line, the airtightness was compromised, leakage occurred, and the system became inoperable.
発明の目的
本発明は前記の欠点に鑑みてなされたもので、
高圧放電灯の外管内に組込まれて、高温状態で使
用されても、リークなどの不都合が発生せず、か
つ低コスト化と信頼性の向上した点灯管を提供す
ることを目的とするものである。OBJECT OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks.
The purpose of this product is to provide a lighting tube that is incorporated into the outer bulb of a high-pressure discharge lamp and does not cause inconveniences such as leakage even when used in high-temperature conditions, and has reduced costs and improved reliability. It is.
発明の構成
本発明は気密容器内に、少なくとも片側が熱応
動素子からなる電極を具備するとともに、水素を
含む混合気体からなる放電気体を充填してなるも
のにおいて、内部線部分、封着用導入線部分、外
部リード線部分が表面層を酸化処理した鉄−ニツ
ケル−クロム合金の単一線からなる点灯管であ
る。Structure of the Invention The present invention provides an airtight container which is provided with an electrode on at least one side of which is a thermally responsive element, and which is filled with a discharge material made of a mixed gas containing hydrogen, including an internal wire portion and a lead-in wire for sealing. This lighting tube consists of a single wire made of iron-nickel-chromium alloy with an oxidized surface layer.
実施例の説明
水素を含む混合ガス、たとえばヘリウム−水素
−アルゴン、またはヘリウム−水素を放電気体に
使用した点灯管は、1500V以上の高いパルス電圧
が得られるなどの理由により、最近、高圧蒸気放
電灯の外管内に組込まれて始動補助用に利用され
ているが、点灯管の位置する温度が高く、さらに
9000〜12000時間の長期間にわたつて使用される
ため、ガラスと導入線の封着部に、この点を配慮
した工夫が必要である。Description of Examples Lighting tubes that use a mixed gas containing hydrogen, such as helium-hydrogen-argon or helium-hydrogen, as a discharge material, have recently been used for high-pressure steam because they can obtain a high pulse voltage of 1500 V or more. It is incorporated into the outer bulb of a discharge lamp and used as a starting aid, but the temperature where the lighting tube is located is high, and
Since it is used for a long period of 9,000 to 12,000 hours, it is necessary to consider this point in the sealing part between the glass and the lead-in wire.
発明者らは、高温で長期間の使用に耐える封着
用導入線について検討したところ、鉄48％−ニツ
ケル46％、クロム６％のような鉄−ニツケル−ク
ロム合金線の表面層（約5μｍ）を酸化処理した
導入線をステム部でガラスと封着したときに前記
の使用条件でも、導入線とガラスとの封着面に沿
つたリークが発生せず、良好な結果が得られた。 The inventors studied a lead-in wire for sealing that can withstand long-term use at high temperatures, and found that the surface layer (approximately 5 μm) of an iron-nickel-chromium alloy wire such as 48% iron-46% nickel and 6% chromium. When the oxidized lead-in wire was sealed to the glass at the stem portion, no leakage occurred along the sealing surface between the lead-in wire and the glass even under the above usage conditions, and good results were obtained.
これに対し、デユメツト線を導入線に用いた同
時比較の点灯管を使用した場合は、2000〜5000時
間で大半のものがリークにより動作不能となつ
た。 On the other hand, when lighting tubes that were simultaneously compared using a dumet wire as the lead-in wire were used, most of them became inoperable due to leakage after 2,000 to 5,000 hours.
温度によるリークの発生に対する影響を調べる
ための強制テストとして、350℃の電気炉中で熱
処理を行なつて両者を比較したところ、鉄−ニツ
ケル−クロム合金線を導入線に用いたものは、
500時間でもリークが発生しなかつたが、デユメ
ツト線を導入線に用いたものは300時間までに全
てリークが発生した。この理由はデユメツト線の
CuOよりも鉄−ニツケル−クロム線のCr2O3の方
が水素による還元作用が弱いためと考えられる。 As a forced test to investigate the influence of temperature on leak generation, we performed heat treatment in an electric furnace at 350℃ and compared the two, and found that the one using iron-nickel-chromium alloy wire as the lead-in wire
No leakage occurred even after 500 hours, but leaks occurred in all cases where a dumet wire was used as the lead-in wire by 300 hours. The reason for this is that the dumet line
This is thought to be due to the fact that the reduction effect of hydrogen is weaker in Cr 2 O 3 of the iron-nickel-chromium wire than in CuO.
点灯管の導入線部分−封着用導入線部分−外部
リード線部分を鉄−ニツケル−クロム合金の単一
線とした構造を採用したのは、前述のごとく低コ
スト化と信頼性向上のほかに、鉄−ニツケル−ク
ロム合金線はデユメツト線に比較して曲げ強度に
強く内部線として使用し、熱応動素子を溶接して
電極を構成しても、電極間隔の変化が僅少で安定
した動作特性が得られるためである。 The adoption of a single iron-nickel-chromium alloy structure for the lead-in wire portion of the lighting tube, the sealing lead-in wire portion, and the external lead wire portion is not only to reduce costs and improve reliability as described above. Compared to dumet wire, iron-nickel-chromium alloy wire has higher bending strength and is used as an internal wire. Even when electrodes are constructed by welding thermally-responsive elements, there is little change in electrode spacing, resulting in stable operating characteristics. This is because it can be obtained.
次に、本発明の一実施例について図面を参照し
て説明する。図は本発明の一実施例を示す点灯管
の正面図である。点灯管の正面図である。点灯管
１は軟質ガラス製の容器２にステム３が封止さ
れ、ステム３に植立された内部線部分４，５に熱
応動素子からなる一対の電極６，７が所定の間隔
を保つて溶接されている。内部線部分４，５、封
着用導入線部分９，１０、外部リード線部分１
１，１２は、鉄（Fe）48％−ニツケル（Ni）46
％−クロム（Cr）６％合金の表面層を酸化処理
した直径0.6mmの単一線を用いた。排気管８から
容器２内の空気を排気したのち、ヘリウム93％−
水素５％−アルゴン２％の混合ガスを57Torr封
入した後、排気管８をチツプオフして点灯管を完
成した。 Next, an embodiment of the present invention will be described with reference to the drawings. The figure is a front view of a lighting tube showing one embodiment of the present invention. It is a front view of a lighting tube. The lighting tube 1 has a stem 3 sealed in a container 2 made of soft glass, and a pair of electrodes 6 and 7 made of thermally responsive elements are maintained at a predetermined distance between internal wire portions 4 and 5 planted in the stem 3. It is welded. Internal wire portions 4, 5, sealing introduction wire portions 9, 10, external lead wire portion 1
1,12 is iron (Fe) 48% - nickel (Ni) 46
A single wire with a diameter of 0.6 mm was used, the surface layer of which was oxidized and made of a 6% chromium (Cr) alloy. After exhausting the air inside the container 2 from the exhaust pipe 8, the helium 93% -
After filling a mixed gas of 5% hydrogen and 2% argon at 57 Torr, the exhaust pipe 8 was chipped off to complete the lighting tube.
なお、必要に応じて容器２の内壁にバリウム
（Ba）などのゲツター材を被着させる場合もあ
る。また電極６，７の熱応動素子の先端部には、
放電時に電極の溶着を防止する目的で、直径0.8
〜1.0mmのタングステン丸棒１３，１４からなる
接点がそれぞれ溶接されている。 Note that, if necessary, a getter material such as barium (Ba) may be applied to the inner wall of the container 2. In addition, at the tips of the thermally responsive elements of the electrodes 6 and 7,
0.8 in diameter to prevent electrode welding during discharge.
Contact points consisting of tungsten round rods 13 and 14 of ~1.0 mm are each welded.
Fe−Ni−Cr合金線については、前記のFe48％
−Ni46％−Cr6％組成のほかに、Fe52％−Ni42
％−Cr6％合金線についても実験したが、350℃
の熱処理による強制テストで、500時間経過後で
もリークは発生せず、前者の合金線と同等の性能
であつた。したがつて、封着するガラスとの熱膨
脹係数がほぼ同一になる組成を選択したFe−Ni
−Cr合金線を用いれば、高温で使用されても、
リークの発生のない点灯管を得ることが可能であ
る。 For Fe-Ni-Cr alloy wire, the above Fe48%
-Ni46%-Cr6% composition, Fe52%-Ni42
%-Cr6% alloy wire was also tested, but at 350℃
In a forced test using heat treatment, no leakage occurred even after 500 hours, and the performance was equivalent to that of the former alloy wire. Therefore, the Fe-Ni composition was selected so that the coefficient of thermal expansion was almost the same as that of the glass to be sealed.
-If Cr alloy wire is used, even when used at high temperatures,
It is possible to obtain a lighting tube that does not cause leakage.
発明の効果
以上説明したように、本発明は水素を含む混合
気体からなる放電気体を封入してなる点灯管にお
いて、内部線部分、封着用導入線部分、外部リー
ド線部分に酸化処理されたFe−Ni−Cr合金の単
一線を用いることにより、150℃〜350℃程度の高
温で使用されても、リークによる不動作がなく、
信頼性の高い、長寿命で、低コストの点灯管を提
供することができるものである。Effects of the Invention As explained above, the present invention provides a lighting tube in which a discharger made of a mixed gas containing hydrogen is enclosed, in which the internal wire portion, the sealing lead wire portion, and the external lead wire portion are oxidized. By using a single Fe-Ni-Cr alloy wire, there is no malfunction due to leakage even when used at high temperatures of about 150℃ to 350℃.
It is possible to provide a lighting tube with high reliability, long life, and low cost.
図は本発明の一実施例である点灯管の正面図で
ある。
１……点灯管、２……容器、３……ステム、
４，５……内部線部分、６，７……熱応動素子、
８……排気管、９，１０……封着用導入線部分、
１１，１２……外部リード線部分、１３，１４…
…タングステン丸棒。
The figure is a front view of a lighting tube which is an embodiment of the present invention. 1...Lighting tube, 2...Container, 3...Stem,
4, 5... Internal line portion, 6, 7... Thermal response element,
8...Exhaust pipe, 9,10...Introduction wire part for sealing,
11, 12... External lead wire portion, 13, 14...
...Tungsten round rod.
Claims (1)
からなる電極を具備するとともに、水素を含む混
合気体からなる放電気体を充填してなるものにお
いて、内部線部分、封着用導入線部分、外部リー
ド線部分が表面層を酸化処理した鉄−ニツケル−
クロム合金の単一線からなることを特徴とする点
灯管。1 In an airtight container equipped with an electrode consisting of a thermally responsive element on at least one side and filled with a discharge material made of a mixed gas containing hydrogen, the internal wire portion, the lead-in wire portion for sealing, and the external lead wire Nickel iron with oxidized surface layer
A lighting tube characterized by being made of a single wire of chromium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8698983A JPS59214154A (en) | 1983-05-18 | 1983-05-18 | Glow switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8698983A JPS59214154A (en) | 1983-05-18 | 1983-05-18 | Glow switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59214154A JPS59214154A (en) | 1984-12-04 |
| JPH0524619B2 true JPH0524619B2 (en) | 1993-04-08 |
Family
ID=13902271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8698983A Granted JPS59214154A (en) | 1983-05-18 | 1983-05-18 | Glow switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59214154A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010262917A (en) * | 2009-04-10 | 2010-11-18 | Panasonic Corp | Electrode structure, discharge tube, illumination device, backlight unit, and image display device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3780331A (en) * | 1972-09-22 | 1973-12-18 | Westinghouse Electric Corp | Apparatus and method for eliminating microcracks in alumina ceramic discharge devices |
| NL8002891A (en) * | 1980-05-20 | 1981-12-16 | Philips Nv | SMILE STARTER. |
-
1983
- 1983-05-18 JP JP8698983A patent/JPS59214154A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59214154A (en) | 1984-12-04 |
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