JPS6367313B2 - - Google Patents
Info
- Publication number
- JPS6367313B2 JPS6367313B2 JP9253882A JP9253882A JPS6367313B2 JP S6367313 B2 JPS6367313 B2 JP S6367313B2 JP 9253882 A JP9253882 A JP 9253882A JP 9253882 A JP9253882 A JP 9253882A JP S6367313 B2 JPS6367313 B2 JP S6367313B2
- Authority
- JP
- Japan
- Prior art keywords
- tip
- support tube
- electrode
- electrode support
- tube
- 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
Links
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 11
- 239000011734 sodium Substances 0.000 claims description 11
- 229910052708 sodium Inorganic materials 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims 3
- 239000002184 metal Substances 0.000 claims 3
- 229910052758 niobium Inorganic materials 0.000 description 11
- 239000010955 niobium Substances 0.000 description 11
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 238000005219 brazing Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/073—Main electrodes for high-pressure discharge lamps
- H01J61/0732—Main electrodes for high-pressure discharge lamps characterised by the construction of the electrode
Description
【発明の詳細な説明】
本発明は高圧ナトリウムランプ用電極支持管に
関し、特に電気導入用の電極支持管と電極心棒の
接続部の改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrode support tube for a high-pressure sodium lamp, and more particularly to an improvement in the connection between an electrode support tube for introducing electricity and an electrode mandrel.
透光性アルミナセラミツク管よりなる発光管内
に水銀およびナトリウムと不活性ガスを封入した
高圧ナトリウムランプは、一般照明用の高圧放電
灯のうちで最も発光効率が優れているので省電力
用光源として各種の用途に利用されている。この
ランプの発光管に用いるセラミツク管は他の高圧
放電灯の発光管材料である石英のようにプレスシ
ールを行なうことが不可能であるので、その端部
の閉塞はアルミナセラミツクよりなる端キヤツプ
あるいはセラミツクと熱膨張係数が近似したニオ
ビウムよりなる端キヤツプをフリツトガラスを介
しロー付けしていた。又、前記端キヤツプにはニ
オビウムよりなる電極支持管を挿着しており、そ
の先端には電極コイルを巻回した電極心棒の他端
を接続し電極支持管の末端は封止しており外部よ
りの電気導入体として構成している。 High-pressure sodium lamps, in which mercury, sodium, and inert gas are sealed in an arc tube made of a translucent alumina ceramic tube, have the highest luminous efficiency among high-pressure discharge lamps for general lighting, and are used in various energy-saving light sources. It is used for this purpose. The ceramic tube used for the arc tube of this lamp cannot be press-sealed like quartz, which is the material of the arc tube of other high-pressure discharge lamps, so its ends are closed by end caps made of alumina ceramic or An end cap made of niobium, which has a coefficient of thermal expansion similar to that of ceramic, was brazed with fritted glass. In addition, an electrode support tube made of niobium is inserted into the end cap, and the other end of the electrode core around which the electrode coil is wound is connected to the tip of the electrode support tube, and the end of the electrode support tube is sealed to prevent external It is configured as an electricity introducing body.
従来、前記した電極支持管と電極心棒の接続部
は第１図に示すような構造であつた。第１図ａは
ニオビウム管の先端に管軸に沿つて一対の切込み
を入れ、先端部に電極心棒の他端を挿入した後機
械的にカシメ付けを行ない接続したものである。
又、第１図ｂは絞り加工したニオビウム管の先端
挿入孔に電極心棒の他端を挿入し、他端開口部よ
りチタン等のロー材を流し込み加熱し接続したも
のである。しかしながら第１図ａの場合、その加
工に手数を要するばかりでなく、接続部の信頼性
が小さく発光管リークが生じることがあり、又特
に管径の小さいニオビウム管を使用する場合はそ
の成形が煩雑であり機械的強度も低下する欠点が
あつた。又、第１図ｂの場合、ロー材の保守管理
に細心の注意を要し、更にロー付け温度の制御が
難しく熟練を要し、最適条件のコントロールが困
難で発光管リークが生じる欠点があつた。 Conventionally, the connection portion between the electrode support tube and the electrode mandrel has a structure as shown in FIG. Figure 1a shows a niobium tube with a pair of notches made along the tube axis at the tip, and the other end of the electrode mandrel inserted into the tip and then mechanically caulked to connect.
FIG. 1b shows the other end of the electrode mandrel inserted into the tip insertion hole of the drawn niobium tube, and a brazing material such as titanium poured into the opening at the other end and heated to connect. However, in the case of Fig. 1a, not only is the processing time-consuming, but the reliability of the connection part is low and arc tube leaks may occur, and especially when using a niobium tube with a small diameter, the molding is difficult. The drawbacks were that it was complicated and mechanical strength decreased. In addition, in the case of Fig. 1b, careful maintenance of the brazing material is required, and furthermore, it is difficult to control the brazing temperature and requires skill, and it is difficult to control the optimum conditions, resulting in arc tube leaks. Ta.
本発明は上記に鑑みなされたもので、電極支持
管の先端を管径が小さいものはそのまま溶接して
閉塞し、又はその先端を圧接成形あるいは絞り加
工等により機械的に変形したうえで溶接して閉塞
し該閉塞部の先端に電極心棒の一端を接続して、
高圧ナトリウムランプ用電極支持管を構成するこ
とを特長とする。そして、電極支持管と電極心棒
の接続作業が簡単であり、流れ作業に適している
ので作業性の改善を図かることができるばかりで
なく、その接続には溶接手段を用いたので、接続
部の信頼性および機械的強度を大きくすることが
でき、発光管リークの恐れのない高圧ナトリウム
ランプ用電極支持管を提供することを目的とす
る。 The present invention has been made in view of the above, and the tip of the electrode support tube, which has a small diameter, can be closed by welding as it is, or the tip can be mechanically deformed by pressure forming or drawing, and then welded. and connecting one end of the electrode shaft to the tip of the occluded part,
The feature is that it constitutes an electrode support tube for high pressure sodium lamps. Furthermore, the connection work between the electrode support tube and the electrode mandrel is simple and suitable for assembly work, which not only improves workability, but also because welding is used for the connection. An object of the present invention is to provide an electrode support tube for a high-pressure sodium lamp that can increase the reliability and mechanical strength of the lamp and is free from the risk of arc tube leakage.
以下、本発明を図示の実施例に基づき説明す
る。第２図は本発明に係る高圧ナトリウムランプ
の発光管の一例を示し、図中１は透光性アルミナ
よりなるセラミツク管で、両端にはアルミナより
なる端キヤツプ２，３がフリツトを介し封着され
ている。端キヤツプの中央にはニオビウムよりな
る電極支持管４，５が挿通されフリツトを介し封
着されており、その先端には後述するように電極
６，７が接続されている。なお、一方の電極支持
管５は排気孔８を有する排気管となつている。そ
して内部には水銀およびナトリウムと共にキセノ
ンガスが封入されている。 Hereinafter, the present invention will be explained based on illustrated embodiments. FIG. 2 shows an example of the arc tube of the high-pressure sodium lamp according to the present invention. In the figure, 1 is a ceramic tube made of translucent alumina, and end caps 2 and 3 made of alumina are sealed at both ends through frits. has been done. Electrode support tubes 4 and 5 made of niobium are inserted through the center of the end cap and sealed via a frit, and electrodes 6 and 7 are connected to the ends of the tubes as will be described later. Note that one electrode support tube 5 is an exhaust pipe having an exhaust hole 8. Inside, xenon gas is sealed together with mercury and sodium.
前記電極支持管の先端と電極との接続は、電極
支持管の先端を成形刃を用い四方向より圧接しほ
ぼ断面十字状に成形し該成形部を不活性ガス雰囲
気中で溶接して閉塞し、閉塞部の先端に電極心棒
の他端を溶接することにより行なう。 The connection between the tip of the electrode support tube and the electrode is made by pressing the tip of the electrode support tube from four directions using a forming blade to form a substantially cross-shaped cross section, and then closing the formed portion by welding in an inert gas atmosphere. , by welding the other end of the electrode mandrel to the tip of the occluded part.
次に本発明に係る電極支持管の接続方法を第３
図に基づき説明する。 Next, a third method for connecting an electrode support tube according to the present invention will be described.
This will be explained based on the diagram.
図中ａは電極支持管として用いるニオビウム管
を示し、ｂの(1)または(2)に示すようにその先端を
四方向よりの成形または絞り加工により機械的に
変形させる。なおこのようにするのは溶接の際、
第４図ａに示すように管肉厚t1より閉塞部の肉厚
t2を大きくするためでありt2＞t1とすることによ
り該閉塞部と電極心棒の溶接を容易に行ないうる
ばかりでなく、閉塞部の肉厚が薄いと溶接時にニ
オビウムが再結晶し結晶粒が大きくなりランプ点
灯中粒界からのリークの危険性があるからであ
る。又、第３図ｂの(3)に示すように管径が小さい
場合はその先端を変形せずにそのまま溶接しても
閉塞部の肉厚は管肉厚より大きくすることができ
る。次にｃに示すようなアルゴンガス等の不活性
ガス雰囲気中で該先端部をアーク溶接し閉塞部を
形成してｄに示すニオビウム管を製作する。更に
前記ニオビウム管と電極を接続するためｅに示す
ようなアルゴンガス雰囲気中で、閉塞部の先端と
電極心棒の他端をアーク溶接して接続しｆに示す
電極支持管を製造する。 In the figure, a shows a niobium tube used as an electrode support tube, and its tip is mechanically deformed by forming or drawing in four directions as shown in (1) or (2) of b. Note that this is done when welding.
As shown in Figure 4a, the wall thickness of the blocked part is greater than the pipe wall thickness t1 .
This is to increase t 2 , and by setting t 2 > t 1 , not only can the closed part and the electrode mandrel be easily welded, but also if the wall thickness of the closed part is thin, niobium will recrystallize and crystallize during welding. This is because the grains become larger and there is a risk of leakage from grain boundaries during lamp operation. Further, as shown in FIG. 3b (3), if the diameter of the tube is small, the wall thickness of the closed portion can be made larger than the wall thickness of the tube even if the tip is welded as is without deforming it. Next, the tip is arc welded in an inert gas atmosphere such as argon gas as shown in c to form a closed part to produce the niobium tube shown in d. Furthermore, in order to connect the niobium tube and the electrode, the tip of the closed part and the other end of the electrode mandrel are connected by arc welding in an argon gas atmosphere as shown in e, thereby producing an electrode support tube shown in f.
又、他の実施例として第４図ｂに示すように電
極心棒の細いものを使用する場合ニオビウムより
なる円筒状の保持具を用い接接時における電極心
棒の再結晶による心棒折れを防止することができ
る。 As another example, as shown in FIG. 4b, when a thin electrode mandrel is used, a cylindrical holder made of niobium is used to prevent the mandrel from breaking due to recrystallization of the electrode mandrel during welding. I can do it.
以上の説明から明らかなように本発明に係る電
極支持管は一連の作業工程により容易に製造する
ことができるのでその保守管理および作業性の改
善を行なうことができ、又接続方法として溶接手
段を用いたので接続部の信頼性を高めることがで
きるばかりでなく発光管リークの恐れのない高圧
ナトリウムランプ用電極支持管を得ることがで
き、その産業上の利用価値は大なるものがある。 As is clear from the above description, the electrode support tube according to the present invention can be easily manufactured through a series of work steps, so its maintenance management and workability can be improved, and welding can be used as the connection method. By using this method, it is possible not only to improve the reliability of the connection part, but also to obtain an electrode support tube for a high-pressure sodium lamp that is free from the risk of arc tube leakage, and has great industrial utility value.
第１図は従来例を示す斜視図および一部縦断側
面図、第２図は本発明に係る発光管の一例を示す
一部縦断側面図、第３図は同じく製造工程の説明
図、第４図は同じく電極支持管を示す一部縦断側
面図である。
FIG. 1 is a perspective view and a partially longitudinal side view showing a conventional example, FIG. 2 is a partially longitudinal side view showing an example of an arc tube according to the present invention, FIG. 3 is an explanatory diagram of the manufacturing process, and FIG. The figure is a partially longitudinal side view showing the electrode support tube.
Claims (1)
のまま又は機械的に変形したうえで溶接して閉塞
した後、該閉塞部の先端に電極心棒の一端を溶接
してなる高圧ナトリウムランプ用電極支持管。 ２ 耐熱性金属よりなる電極支持管の先端を十字
状に成形し、該成形部をアーク溶接して閉塞部と
した後、閉塞部の先端に電極心棒の一端を溶接し
てなる特許請求の範囲第１項記載の高圧ナトリウ
ムランプ用電極支持管。 ３ 耐熱性金属よりなる電極支持管の先端の絞り
加工により縮径し該縮径部をアーク溶接して閉塞
した後、閉塞部の先端に電極心棒の一端を溶接し
てなる特許請求の範囲第１項記載の高圧ナトリウ
ムランプ用電極支持管。[Scope of Claims] 1. The tip of an electrode support tube made of a heat-resistant metal is closed by welding as it is or after being mechanically deformed, and then one end of the electrode mandrel is welded to the tip of the closed section. Electrode support tube for high pressure sodium lamps. 2. Claims in which the tip of an electrode support tube made of heat-resistant metal is formed into a cross shape, the formed portion is arc welded to form a closed portion, and one end of the electrode mandrel is welded to the tip of the closed portion. The electrode support tube for a high-pressure sodium lamp according to item 1. 3. The diameter of the tip of an electrode support tube made of a heat-resistant metal is reduced by drawing, the reduced diameter portion is closed by arc welding, and one end of the electrode mandrel is welded to the tip of the closed portion. The electrode support tube for a high-pressure sodium lamp according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9253882A JPS58209856A (en) | 1982-05-31 | 1982-05-31 | Electrode-supporting tube for high pressure sodium lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9253882A JPS58209856A (en) | 1982-05-31 | 1982-05-31 | Electrode-supporting tube for high pressure sodium lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58209856A JPS58209856A (en) | 1983-12-06 |
| JPS6367313B2 true JPS6367313B2 (en) | 1988-12-23 |
Family
ID=14057142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9253882A Granted JPS58209856A (en) | 1982-05-31 | 1982-05-31 | Electrode-supporting tube for high pressure sodium lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58209856A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3568910D1 (en) * | 1984-03-22 | 1989-04-20 | Philips Nv | High-pressure discharge lamp |
| JPS6171542A (en) * | 1984-09-13 | 1986-04-12 | Iwasaki Electric Co Ltd | Electrode supporting portion of high pressure metallic vapor lamp |
| JP4670388B2 (en) * | 2005-02-23 | 2011-04-13 | パナソニック株式会社 | High pressure discharge lamp and manufacturing method thereof |
-
1982
- 1982-05-31 JP JP9253882A patent/JPS58209856A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58209856A (en) | 1983-12-06 |
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