JPH0584022B2 - - Google Patents
Info
- Publication number
- JPH0584022B2 JPH0584022B2 JP822689A JP822689A JPH0584022B2 JP H0584022 B2 JPH0584022 B2 JP H0584022B2 JP 822689 A JP822689 A JP 822689A JP 822689 A JP822689 A JP 822689A JP H0584022 B2 JPH0584022 B2 JP H0584022B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- lead wire
- electrode
- external lead
- arc 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 - Fee Related
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 16
- 229910052708 sodium Inorganic materials 0.000 claims description 16
- 239000011734 sodium Substances 0.000 claims description 16
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 15
- 238000005219 brazing Methods 0.000 claims description 10
- 239000000919 ceramic Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 10
- 239000004568 cement Substances 0.000 claims description 9
- MJGFBOZCAJSGQW-UHFFFAOYSA-N mercury sodium Chemical compound [Na].[Hg] MJGFBOZCAJSGQW-UHFFFAOYSA-N 0.000 description 10
- 229910001023 sodium amalgam Inorganic materials 0.000 description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 7
- 239000010936 titanium Substances 0.000 description 7
- 229910052719 titanium Inorganic materials 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001704 evaporation 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
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Landscapes
- 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
本発明は高圧ナトリウムランプに関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to high pressure sodium lamps.
従来の技術
従来、この種の高圧ナトリウムランプの発光管
構造は、第４図にその一端部の正面断面図を示す
ように、セラミツク管１の両端部に先端に電極コ
イル４を有する導電管１３がセラミツクセメント
３で気密に封着されている。なお第４図中、７は
チタニウムろう材、８はナトリウムアマルガムを
示す。BACKGROUND ART Conventionally, the arc tube structure of this type of high-pressure sodium lamp has a conductive tube 13 having electrode coils 4 at both ends of a ceramic tube 1, as shown in FIG. 4, which is a front sectional view of one end thereof. is hermetically sealed with ceramic cement 3. In addition, in FIG. 4, 7 indicates a titanium brazing material and 8 indicates a sodium amalgam.
発明が解決しようとする課題
しかし、このような従来の高圧ナトリウムラン
プの発光管構造では、点灯中に蒸発せずに残留す
る液状のナトリウムアマルガム８とセラミツクセ
メント３が反応してナトリウムが消失し、動程中
に光束維持率の低下、およびランプ電圧の上昇を
招くという問題があつた。Problems to be Solved by the Invention However, in the arc tube structure of such a conventional high-pressure sodium lamp, the liquid sodium amalgam 8 that remains without evaporating during lighting reacts with the ceramic cement 3, and the sodium disappears. There were problems in that the luminous flux maintenance factor decreased and the lamp voltage increased during the movement.
また、従来のこのような高圧ナトリウムランプ
では、発光管を外管内に支持するのに、発光管の
導電管に発光管支持板の一端を溶接し、この他端
をステム線に溶接していたが、溶接個所が多くな
るので、その溶接が完全でなかつたり、動程中に
溶接外れを起こしたりするなどの問題があつた。 Additionally, in conventional high-pressure sodium lamps, one end of the arc tube support plate was welded to the conductive tube of the arc tube, and the other end was welded to the stem wire to support the arc tube within the outer bulb. However, since there are many welding points, there are problems such as the welding being incomplete or the welding coming off during the movement.
本発明はこのような問題点を解決するためにな
されたもので、動程中の光束維持率の低下を抑制
し、さらにランプ電圧の上昇を抑制し、かつ組立
時および動程中における導電管とステム線との接
合不良を防止した高圧ナトリウムランプを提供す
るものである。 The present invention was made to solve these problems, and it suppresses the decrease in luminous flux maintenance factor during movement, further suppresses the increase in lamp voltage, and suppresses the reduction of the conductive tube during assembly and during movement. The object of the present invention is to provide a high-pressure sodium lamp that prevents poor bonding between the stem wire and the stem wire.
課題を解決するための手段
本発明の高圧ナトリウムランプは先端に電極コ
イルを保持した電極棒の後端に外部リード線をろ
う材で接合し、前記電極棒に一端に開口部を有し
他端に閉塞部が形成された導電管を、前記開口部
が電極側に位置しかつ前記閉塞部が前記外部リー
ド線を貫通するように気密に固着し、前記導電管
をセラミツクセメントで両端部に封着した発光管
を備えたものである。Means for Solving the Problems In the high-pressure sodium lamp of the present invention, an external lead wire is joined to the rear end of an electrode rod holding an electrode coil at the tip with a brazing material, and the electrode rod has an opening at one end and an opening at the other end. A conductive tube with a closed portion formed thereon is airtightly fixed so that the opening is located on the electrode side and the closed portion passes through the external lead wire, and both ends of the conductive tube are sealed with ceramic cement. It is equipped with a light emitting tube attached to it.
さらに、本発明の高圧ナトリウムランプは前記
発光管が前記外部リード線の他端をステム線と直
接溶接することにより外管内に支持されているも
のである。 Further, in the high pressure sodium lamp of the present invention, the arc tube is supported within the outer tube by directly welding the other end of the outer lead wire to the stem wire.
作 用
この構成により、発光管の最冷点個所は導電管
の内部となるため、点灯中液状のナトリウムアマ
ルガムは導電管の内部に存在し、セラミツクセメ
ントと接触しない。その結果、動程中の光束維持
率の低下、およびランプ電圧の上昇を抑制するこ
とができる。また、導電管とステム線を直接溶接
することにより、その分、溶接外れを減少でき、
かつマウント構造を簡素化することができる。Effect: With this configuration, the coldest point of the arc tube is inside the conductive tube, so the liquid sodium amalgam exists inside the conductive tube during lighting and does not come into contact with the ceramic cement. As a result, it is possible to suppress a decrease in luminous flux maintenance factor and an increase in lamp voltage during movement. In addition, by directly welding the conductive tube and stem wire, welding failure can be reduced accordingly.
Moreover, the mounting structure can be simplified.
実施例
第２図は、本発明の一実施例である高圧ナトリ
ウムランプの発光管の要部正面断面図である。Embodiment FIG. 2 is a front sectional view of a main part of an arc tube of a high-pressure sodium lamp which is an embodiment of the present invention.
第２図に示すように、本発明実施例の高圧ナト
リウムランプの発光管は、多結晶アミナ管１の両
端部に、ニオビウム99％とジルコニウム１％から
なる導電管２がセラミツクセメント３で気密に封
着されている。導電管２は、一端に開口部を、他
端に閉塞部をそれぞれ有しており、その開口は後
述の電極コイル側を向いている。電極は電極コイ
ル４と主としてタングステンからなる電極棒５と
からなり、電極棒５の先端には電極コイル４を保
持し、後端には外部リード線６の一端がチタニウ
ムろう材７で接合されている。そして、外部リー
ド線６が導電管２の閉塞部を貫通しこの閉塞部に
チタニウムろう材７で気密に固着されている。 As shown in FIG. 2, in the arc tube of the high-pressure sodium lamp according to the embodiment of the present invention, conductive tubes 2 made of 99% niobium and 1% zirconium are airtightly sealed with ceramic cement 3 at both ends of a polycrystalline amine tube 1. It is sealed. The conductive tube 2 has an opening at one end and a closed part at the other end, and the opening faces the electrode coil side, which will be described later. The electrode consists of an electrode coil 4 and an electrode rod 5 mainly made of tungsten.The electrode coil 4 is held at the tip of the electrode rod 5, and one end of an external lead wire 6 is joined to the rear end with a titanium brazing material 7. There is. An external lead wire 6 passes through the closed portion of the conductive tube 2 and is hermetically fixed to this closed portion with a titanium brazing material 7.
発光管内にはナトリウムアマルガム８およびキ
セノンガスが封入されている。ナトリウムアマル
ガム８は点灯中導電管２の内部に存在する。 Sodium amalgam 8 and xenon gas are sealed inside the arc tube. Sodium amalgam 8 exists inside conductive tube 2 during lighting.
ここで、もし電極棒５が導電管２の閉塞部を貫
通した状態でこの閉塞部にチタニウムろう材７で
固着された場合は、もともとタングステンの表面
に微小なな凹凸があつて、その凹凸をチタニウム
ろう材７で完全に埋めることができないため、ラ
ンプ点灯中にナトリウムアマルガム８が微小な凹
凸を通つて発光管の外側に流れ出ることがある。 Here, if the electrode rod 5 penetrates the closed part of the conductive tube 2 and is fixed to this closed part with the titanium brazing material 7, the surface of the tungsten will originally have minute irregularities, and the irregularities will be removed. Since it cannot be completely filled with titanium brazing material 7, sodium amalgam 8 may flow out of the arc tube through minute irregularities during lamp operation.
したがつて、本発明実施例においては、電極棒
５にニオビウム棒などからなる外部リード線６を
チタニウムろう材７で接合し、この外部リード線
を導電管２に貫通固着しているのである。 Therefore, in the embodiment of the present invention, an external lead wire 6 made of a niobium rod or the like is bonded to the electrode rod 5 with a titanium brazing material 7, and this external lead wire is fixed to the conductive tube 2 through the wire.
また、外部リード線６の他端はステム線９と直
接溶接されている。これにより、第１図に示すよ
うに、発光管は外管１０内に支持されることとな
る。 Further, the other end of the external lead wire 6 is directly welded to the stem wire 9. As a result, the arc tube is supported within the outer tube 10, as shown in FIG.
なお、第１図中、１１はゲツタリング、１２は
口金をそれぞれ示す。 In addition, in FIG. 1, 11 indicates a getter ring, and 12 indicates a cap.
次に、本発明の具体的な例について説明する。 Next, a specific example of the present invention will be described.
第２図に示す発光管構造でアルミナ管１は、内
径４mm、全長30mmの多結晶アルミナからなり、電
極間距離は10.8mmである。発光管内には水銀3.5
mg、金属ナトリウム1.5mgのナトリウムアマルガ
ム７が５mg、およびキセノンガスが80Torr封入
されている。そして、この発光管は第１図に示す
とおりの構造でもつて外管内に支持されている。
かかるランプ10灯を、入力50W、5.5時間点灯、
0.5時間消灯の点滅サイクルで寿命試験を行つた。
その結果、定格寿命6000時間の点灯後も光束維持
率は93％以上あり、かつランプ電圧の上昇は最大
＋2.3Vと小さかつた。また、寿命中のランプ光
色の変化も見られなかつた。さらに、動程中を通
して導電管とステム線との溶接外れも全くなかつ
た。 In the arc tube structure shown in FIG. 2, the alumina tube 1 is made of polycrystalline alumina and has an inner diameter of 4 mm and a total length of 30 mm, and the distance between the electrodes is 10.8 mm. There is 3.5 mercury in the arc tube.
1.5 mg of sodium metal, 5 mg of sodium amalgam 7, and 80 Torr of xenon gas are sealed. This arc tube is supported within the outer tube with a structure as shown in FIG.
10 lamps, input 50W, lit for 5.5 hours,
A lifespan test was conducted using a 0.5-hour off-flash cycle.
As a result, the luminous flux maintenance rate was over 93% even after the rated life of 6,000 hours, and the increase in lamp voltage was small at a maximum of +2.3V. Further, no change in lamp light color was observed during the life of the lamp. Furthermore, there was no welding disconnection between the conductive tube and the stem wire throughout the movement.
第３図は本発明の他の実施例を示すもので、こ
の実施例の場合はアルミナ管が直管状の例であ
り、上記実施例と同様の効果が得られるものであ
る。 FIG. 3 shows another embodiment of the present invention. In this embodiment, the alumina tube is straight, and the same effects as in the above embodiment can be obtained.
発明の効果
以上説明したように、本発明の高圧ナトリウム
ランプによれば、点灯中における液状のナトリウ
ムアマルガムは導電管の内部に存在するので、セ
ラミツクセメントと接触せず、このため動程中の
光束維持率の低下、およびランプ電圧の上昇を抑
制することができ、またナトリウムアマルガムの
リークを防止して光色の変化を防止することがで
きる。また、外部リード線の他端をステム線と直
接溶接することにより、その分溶接個所が減少す
るため、信頼性を向上することができ、かつマウ
ント構造を簡素化することができる。Effects of the Invention As explained above, according to the high-pressure sodium lamp of the present invention, the liquid sodium amalgam exists inside the conductive tube during lighting, so it does not come into contact with the ceramic cement. It is possible to suppress a decrease in maintenance rate and an increase in lamp voltage, and also to prevent leakage of sodium amalgam and change in light color. Furthermore, by directly welding the other end of the external lead wire to the stem wire, the number of welding locations is reduced accordingly, so that reliability can be improved and the mount structure can be simplified.
第１図は本発明の一実施例である高圧ナトリウ
ムランプの正面断面図、第２図は同ランプの発光
管を示す要部正面断面図、第３図は本発明の他の
実施例の高圧ナトリウランプの発光管を示す要部
正面断面図、第４図は従来の高圧ナトリウムラン
プの発光管を示す一部正面断面図である。
１……アルミナ管、２……導電管、３……セラ
ミツクセメント、４……電極コイル、５……電極
棒、６……外部リード線、７……チタニウムろう
材、８……ナトリウムアマルガム、９……ステム
線。
Fig. 1 is a front cross-sectional view of a high-pressure sodium lamp which is an embodiment of the present invention, Fig. 2 is a front cross-sectional view of main parts showing the arc tube of the lamp, and Fig. 3 is a high-pressure sodium lamp according to another embodiment of the present invention. FIG. 4 is a partial front sectional view showing the arc tube of a conventional high-pressure sodium lamp. 1... Alumina tube, 2... Conductive tube, 3... Ceramic cement, 4... Electrode coil, 5... Electrode rod, 6... External lead wire, 7... Titanium brazing material, 8... Sodium amalgam, 9... Stem line.
Claims (1)
外部リード線をろう材で接合し、前記電極棒に、
一端に開口部を有し他端に閉塞部が形成された導
電管を、前記開口部が電極コイル側に位置しかつ
前記閉塞部が前記外部リード線を貫通するように
気密に固着し、前記導電管をセラミツクセメント
で両端部に封着した発光管を備えたことを特徴と
する高圧ナトリウムランプ。 ２ 先端に電極コイルを保持した電極棒の後端に
外部リード線の一端をろう材で接合し、前記電極
棒に、一端に開口部を有し他端に閉塞部が形成さ
れた導電管を、前記開口部が電極コイル側に位置
しかつ前記閉塞部が前記外部リード線を貫通する
ように気密に固着し、前記導電管をセラミツクセ
メントで両端部に封着した発光管を備え、前記外
部リード線の他端とステム線を直接溶接すること
により前記発光管を外管内に支持したことを特徴
とする高圧ナトリウムランプ。[Claims] 1. An external lead wire is joined to the rear end of an electrode rod holding an electrode coil at the tip with a brazing material, and the electrode rod is provided with:
A conductive tube having an opening at one end and a closed section at the other end is hermetically fixed so that the opening is located on the electrode coil side and the closed section passes through the external lead wire. A high-pressure sodium lamp characterized by having an arc tube with a conductive tube sealed at both ends with ceramic cement. 2. One end of an external lead wire is joined with a brazing material to the rear end of an electrode rod holding an electrode coil at the tip, and a conductive tube having an opening at one end and a closed portion at the other end is attached to the electrode rod. , comprising an arc tube in which the opening is located on the electrode coil side, the closing part is airtightly fixed so as to pass through the external lead wire, and the conductive tube is sealed at both ends with ceramic cement; A high-pressure sodium lamp characterized in that the arc tube is supported within the outer tube by directly welding the other end of the lead wire and the stem wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP822689A JPH01281657A (en) | 1988-01-18 | 1989-01-17 | High pressure sodium-vapor lamp |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63-8100 | 1988-01-18 | ||
| JP810088 | 1988-01-18 | ||
| JP822689A JPH01281657A (en) | 1988-01-18 | 1989-01-17 | High pressure sodium-vapor lamp |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20644892A Division JP2853787B2 (en) | 1992-08-03 | 1992-08-03 | High pressure sodium lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01281657A JPH01281657A (en) | 1989-11-13 |
| JPH0584022B2 true JPH0584022B2 (en) | 1993-11-30 |
Family
ID=26342544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP822689A Granted JPH01281657A (en) | 1988-01-18 | 1989-01-17 | High pressure sodium-vapor lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01281657A (en) |
-
1989
- 1989-01-17 JP JP822689A patent/JPH01281657A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01281657A (en) | 1989-11-13 |
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