JP3106866B2 - High pressure discharge lamp - Google Patents
High pressure discharge lampInfo
- Publication number
- JP3106866B2 JP3106866B2 JP06168698A JP16869894A JP3106866B2 JP 3106866 B2 JP3106866 B2 JP 3106866B2 JP 06168698 A JP06168698 A JP 06168698A JP 16869894 A JP16869894 A JP 16869894A JP 3106866 B2 JP3106866 B2 JP 3106866B2
- Authority
- JP
- Japan
- Prior art keywords
- discharge lamp
- bottomed cylinder
- bulb
- pressure discharge
- sealing
- 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
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はキセノンガスなどを内部
に高圧で封入した大電流型の高圧放電ランプに関する。BACKGROUND OF THE INVENTION This invention is internal and xenon gas
The present invention relates to a high-current high-pressure discharge lamp sealed at a high pressure .
【０００２】[0002]
【従来の技術】キセノンガスなどを内部に高圧で封入
し、電極を支持するリード棒が封止部を貫通してなる石
英製バルブを有する放電ランプでは、封止部に膨張率の
異なる数種類のガラスを接続して金属とガラスを接合し
ている。この方法は、一般的に段継ぎシール法とよばれ
て、大電流型の放電ランプに使われている。しかし、こ
の段継ぎシール法は異種のガラスをつなぎ合わせるため
加工技術が難しく、コストが高くなり、また不良の発生
率が高い。また、使用温度も低温度に限定されるためラ
ンプの全長が長くなってしまう。2. Description of the Related Art In a discharge lamp having a quartz bulb in which xenon gas or the like is sealed at a high pressure inside and a lead rod for supporting an electrode penetrates a sealing portion, several kinds of different expansion coefficients are provided in the sealing portion. Glass is connected to join metal and glass. This method is generally called a step seal method and is used for a large current type discharge lamp. However, this step-sealing method involves joining different kinds of glass, so that the processing technique is difficult, the cost is high, and the occurrence rate of defects is high. Further, since the operating temperature is limited to a low temperature, the overall length of the lamp becomes longer.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、上記欠点を
解消するためになされたものであって、その目的とする
ところは、封止部を改善することによって品質を改善
し、短寸法の放電ランプを提供することにある。SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned drawbacks, and an object of the present invention is to improve the quality by improving the sealing portion, and to improve the short dimension. It is to provide a discharge lamp.
【０００４】[0004]
【課題を解決するための手段】本発明の目的は、石英製
バルブと、このバルブの両側に枝管部を有し、該枝管部
の両端に封止部が形成され、該バルブ内に陽極と陰極が
対向配置され、該両電極を支持するリード棒が該封止部
を貫通し、該バルブ内にキセノンを含むガスを封入して
なる高圧放電ランプにおいて、前記封止部は、モリブデ
ンの有底シリンダーの開口周縁部が前記枝管部の石英に
溶着されて形成され、前記枝管部より露出した該有底シ
リンダー底部を前記リード棒が貫通して該有底シリンダ
ーの底部貫通孔とリード棒とをろう材を用いて気密に接
合すると共に、このろう材で前記有底シリンダーの底部
全域を被覆して形成されることによって達成できる。SUMMARY OF THE INVENTION It is an object of the present invention to provide a quartz valve having a branch tube on both sides of the valve, and sealing portions formed at both ends of the branch tube. An anode and a cathode are arranged opposite to each other in the bulb, and a lead rod supporting both the electrodes penetrates the sealing portion, and a gas containing xenon is sealed in the bulb.
In the high-pressure discharge lamp described above,
The peripheral edge of the bottomed cylinder opening
The bottomed shell formed by welding and exposed from the branch pipe portion
The bottomed cylinder has the lead rod penetrating through the bottom of the cylinder.
Airtight connection between the bottom through hole and the lead rod using brazing material.
And the bottom of the bottomed cylinder with this brazing material
This can be achieved by being formed so as to cover the entire area .
【０００５】[0005]
【作用】有底シリンダーとリード棒をろう付けする範囲
を規定することにより高温度雰囲気中でも使用できるこ
とになり、かつ、シリンダーの強度が増して短寸法の放
電ランプができる。By defining the range in which the bottomed cylinder and the lead rod are brazed, the cylinder can be used even in a high-temperature atmosphere, and the strength of the cylinder is increased so that a short discharge lamp can be obtained.
【０００６】[0006]
【実施例】以下に図面を参照して本発明の実施例を説明
する。図１は従来の放電ランプの説明図である。図２は
高融点金属でできた有底シリンダーの封止部を有する放
電ランプである。図３は封止部の要部の説明図である。
図において、１はバルブ、２はバルブに連なる枝管部で
その各両端部に封止部９がある。この封止部９を形成す
る有底シリンダーがあり、それを貫通してリード棒３が
あり、その他端にはそれぞれ陽極４、陰極５が接続され
ている。８は該リード棒３が貫通している高融点金属板
の支持部材で、１０は該支持部材８を固定している高融
点金属コイルである。１１はリード棒３と有底シリンダ
ーをろう付けしているろう材であって、有底シリンダー
の底面全域をおおっている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram of a conventional discharge lamp. FIG. 2 shows a discharge lamp having a closed part of a bottomed cylinder made of a high melting point metal. FIG. 3 is an explanatory diagram of a main part of the sealing unit.
In the figure, 1 is a valve, 2 is a branch pipe part connected to the valve, and a sealing part 9 is provided at both ends thereof. There is a bottomed cylinder forming this sealing portion 9, there is a lead bar 3 penetrating therethrough, and the other end is connected to an anode 4 and a cathode 5 respectively. Reference numeral 8 denotes a high-melting point metal plate supporting member through which the lead rod 3 passes, and 10 denotes a high-melting point metal coil to which the supporting member 8 is fixed. Numeral 11 denotes a brazing material for brazing the lead rod 3 and the bottomed cylinder, which covers the entire bottom surface of the bottomed cylinder.
【０００７】本実施例では、有底シリンダーの材料とし
てモリブデンを使用しているが、モリブデンの酸化温度
は約３００℃である。有底シリンダー部の底部は空気に
さらされているため３００℃以上では使えない。そのた
め、発熱源である放電ランプのアークから遠ざけねばな
らない。その結果放電ランプの全長が長くなってしま
う。そこで、ろう材である金または銅を溶かしてろう付
けするとき、このろう材がシリンダー底部全域まで流れ
るようにしてシリンダー底部をおおってしまう。そうす
ることによりモリブデンは空気にさらされないため３０
０℃以上のところでも使用でき、かつ、底部の強度も増
加する。そのため放電ランプの全長も従来の段継ぎガラ
ス（耐熱温度３００℃）の放電ランプよりも短くでき
る。本実施例は、２ｋＷのキセノン放電ランプである。
従来の段継ぎガラスタイプでは全長が３７０ｍｍである
が、本発明のランプでは３２５ｍｍまで短くすることが
できた。In this embodiment, molybdenum is used as the material for the bottomed cylinder. The oxidation temperature of molybdenum is about 300 ° C. Since the bottom of the bottomed cylinder is exposed to air, it cannot be used above 300 ° C. Therefore, it must be kept away from the arc of the discharge lamp, which is a heat source. As a result, the overall length of the discharge lamp becomes longer. Therefore, when brazing by melting the brazing material, gold or copper, the brazing material flows over the entire bottom of the cylinder to cover the bottom of the cylinder. By doing so, the molybdenum is not exposed to air,
It can be used even at a temperature of 0 ° C. or higher, and the strength at the bottom increases. Therefore, the overall length of the discharge lamp can be shorter than that of a conventional discharge lamp made of stepped glass (heat-resistant temperature: 300 ° C.). This embodiment is a xenon discharge lamp of 2 kW.
The total length of the conventional joint glass type is 370 mm, but the lamp of the present invention could be reduced to 325 mm.
【０００８】[0008]
【発明の効果】以上の説明から明らかなように、本発明
によれば、高圧放電ランプの全長が短くできるため製造
コストが安くでき、封止部の強度も増して品質の良い高
圧放電ランプができる。As is apparent from the above description, according to the present invention, the total length of the high-pressure discharge lamp can be shortened, so that the manufacturing cost can be reduced, the strength of the sealing portion can be increased, and a high quality high- quality lamp can be obtained.
Can pressure discharge lamp.
【図１】従来の放電ランプの説明図である。FIG. 1 is an explanatory diagram of a conventional discharge lamp.
【図２】本発明の放電ランプの実施例の説明図である。FIG. 2 is an explanatory view of an embodiment of the discharge lamp of the present invention.
【図３】本発明の放電ランプの要部の説明図である。FIG. 3 is an explanatory diagram of a main part of the discharge lamp of the present invention.
１ バルブ ２ 枝管部 ３ リード棒 １１ ろう材 DESCRIPTION OF SYMBOLS 1 Valve 2 Branch pipe part 3 Lead rod 11 Brazing material
Claims (1)
管部を有し、該枝管部の両端に封止部が形成され、該バ
ルブ内に陽極と陰極が対向配置され、該両電極を支持す
るリード棒が該封止部を貫通し、該バルブ内にキセノン
を含むガスを封入してなる高圧放電ランプにおいて、前記封止部は、モリブデンの有底シリンダーの開口周縁
部が前記枝管部の石英に溶着されて形成され、前記枝管
部より露出した該有底シリンダー底部を前記リード棒が
貫通して該有底シリンダーの底部貫通孔とリード棒とを
ろう材を用いて気密に接合すると共に、このろう材で前
記有底シリンダーの底部全域を被覆して形成されてなる
ことを特徴とする高圧放電ランプ。1. A quartz bulb and a branch tube on both sides of the bulb, sealing portions are formed at both ends of the branch tube, and an anode and a cathode are arranged in the bulb so as to face each other. A lead rod supporting an electrode penetrates through the sealing portion, and xenon is contained in the bulb.
In the high pressure discharge lamp formed by sealing a gas containing, the sealing portion has an opening peripheral edge of the bottomed cylinder molybdenum
Part is formed by welding to the quartz of the branch pipe part,
The bottom of the bottomed cylinder exposed from the part is
Penetrates the bottom through hole of the bottomed cylinder and the lead rod.
It is joined air-tightly with brazing material, and
A high-pressure discharge lamp formed by covering the entire bottom of a bottomed cylinder .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06168698A JP3106866B2 (en) | 1994-06-29 | 1994-06-29 | High pressure discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06168698A JP3106866B2 (en) | 1994-06-29 | 1994-06-29 | High pressure discharge lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0817398A JPH0817398A (en) | 1996-01-19 |
| JP3106866B2 true JP3106866B2 (en) | 2000-11-06 |
Family
ID=15872807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06168698A Expired - Fee Related JP3106866B2 (en) | 1994-06-29 | 1994-06-29 | High pressure discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3106866B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1196969A (en) * | 1997-09-19 | 1999-04-09 | Phoenix Denki Kk | Dc lighting discharge lamp and light source mounting the discharge lamp on reflector |
-
1994
- 1994-06-29 JP JP06168698A patent/JP3106866B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0817398A (en) | 1996-01-19 |
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