JPH08315780A - Discharge lamp - Google Patents

Discharge lamp

Info

Publication number
JPH08315780A
JPH08315780A JP7140090A JP14009095A JPH08315780A JP H08315780 A JPH08315780 A JP H08315780A JP 7140090 A JP7140090 A JP 7140090A JP 14009095 A JP14009095 A JP 14009095A JP H08315780 A JPH08315780 A JP H08315780A
Authority
JP
Japan
Prior art keywords
lead rod
metal plate
glass member
metal foil
holding cylinder
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.)
Granted
Application number
JP7140090A
Other languages
Japanese (ja)
Other versions
JP3228073B2 (en
Inventor
Akira Satomi
昭 里見
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ushio Denki KK
Ushio Inc
Original Assignee
Ushio Denki KK
Ushio Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ushio Denki KK, Ushio Inc filed Critical Ushio Denki KK
Priority to JP14009095A priority Critical patent/JP3228073B2/en
Priority to KR1019960015495A priority patent/KR100389998B1/en
Priority to DE19618967A priority patent/DE19618967A1/en
Priority to TW085105954A priority patent/TW346637B/en
Publication of JPH08315780A publication Critical patent/JPH08315780A/en
Application granted granted Critical
Publication of JP3228073B2 publication Critical patent/JP3228073B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/02Details
    • H01J61/36Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/02Details
    • H01J61/30Vessels; Containers

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE: To prevent the generation of the crack of a glass member and an internal lead bar holding cylinder body, and lengthen the service life by arranging metallic foil thinner than a metallic plate between the glass member and the metallic plate. CONSTITUTION: In a heat treatment process of a sealing tube part 81, a glass member 1 and a metallic member 3 different in an expansion coefficient are isolated from each other by high melting point metallic foil M having a thickness of 30μm. Therefore, the members 1 and 3 are not welded together. In the metallic foil M, a thickness is set in 30μm, and in a metallic plate 3, since a thickness is set in 0.5mm in order to support an internal lead bar 4 and an electrode 9, the metallic foil M is extremely thinner than the metallic plate 3, and even if the member 1 is melted and contacts with the metallic foil M in a heating and cooling process of the sealing tube part 81, expansive force and contractive force applied to the member 1 by the metallic foil M is extremely small. Therefore, the generation of a crack of the member 1 can be prevented.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、放電ランプに関するも
のであり、さらに詳しくは、特に大電流用に適した気密
封止構造を有する放電ランプに関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge lamp, and more particularly to a discharge lamp having a hermetically sealed structure suitable for a large current.

【0002】[0002]

【従来の技術】放電ランプ例えば水銀灯は、一般にこれ
より放射される紫外線を利用する分野、例えば光化学産
業分野、半導体デバイスの製造分野、その他の分野で広
く用いられている。
2. Description of the Related Art Discharge lamps, such as mercury lamps, are widely used in the fields of utilizing ultraviolet rays emitted from the lamps, such as the photochemical industry, the semiconductor device manufacturing field, and other fields.

【0003】例えば、大電流用の高圧水銀灯または超高
圧水銀灯においては、発光ガスの主成分である水銀の封
入量が大きくて点灯時の発光管内ガス圧が非常に高く、
しかも、発熱量が大きく、従って、特に気密封止部のガ
ラスにおいては耐熱性および耐圧性が大きいことが必要
とされる。そして、点灯中においては発光管内の水銀が
完全に蒸発していることが必要であり、このため点灯中
の発光管内においては水銀の凝縮が生じるような低い温
度部分がないことが必要である。
For example, in a high-pressure mercury lamp or an ultra-high-pressure mercury lamp for a large current, the amount of mercury, which is the main component of the luminous gas, is large, and the gas pressure inside the arc tube during lighting is very high.
Moreover, the amount of heat generated is large, and accordingly, it is required that the glass of the hermetically sealed portion has high heat resistance and pressure resistance. Then, it is necessary that mercury in the arc tube is completely evaporated during lighting, and therefore, there is no need to have a low temperature portion in the arc tube during lighting in which mercury is condensed.

【0004】このようなことから、従来の高圧水銀灯ま
たは超高圧水銀灯においては、発光管を形成するガラス
を給電用のリード棒に直接溶着することにより、発光管
の気密封止を達成するいわゆるロッドシール構造ではな
く、封着用の金属箔を用いたいわゆる箔シール構造が採
用されている。
Therefore, in the conventional high-pressure mercury lamp or ultra-high-pressure mercury lamp, the so-called rod for achieving the hermetic sealing of the arc tube by directly welding the glass forming the arc tube to the lead rod for power supply. Instead of the seal structure, a so-called foil seal structure using a metal foil for sealing is adopted.

【0005】図7は、箔シール構造を有する高圧水銀灯
の一例を示す説明図である。8は、発光空間囲繞部82
とこれに続く封止管部81とからなる封体である。この
封体8の発光空間囲繞部82内に電極9が配置され、こ
の電極9は内部リード棒4によって支持されている。内
部リード棒4は内部リード棒保持用筒体6によって封止
管部81内に保持されている。そして、内部リード棒4
の基端部には、モリブデン等の高融点金属からなる金属
板3が溶接されており、この金属板3の発光空間囲繞部
82側の面に給電用金属箔2が溶接されている。給電用
金属箔2は円柱状のガラス部材1の外周において、その
周方向に離間して、当該ガラス部材1の軸方向に帯状に
例えば5枚配置されている。そして、給電用金属箔2
は、金属板3に溶接された方向と反対側の他端部におい
て、皿状の金属部材51に溶接されており、この金属部
材51を介して外部リード棒5と電気的に接続されてい
る。なお、他方の封止管部も、同様の構造なので説明を
省略する。
FIG. 7 is an explanatory view showing an example of a high pressure mercury lamp having a foil seal structure. 8 is a light emitting space surrounding portion 82
And a sealing tube portion 81 that follows this. An electrode 9 is arranged in the light emitting space surrounding portion 82 of the sealing body 8, and the electrode 9 is supported by the internal lead rod 4. The inner lead rod 4 is held in the sealing tube portion 81 by the inner lead rod holding cylinder 6. And the inner lead bar 4
A metal plate 3 made of a refractory metal such as molybdenum is welded to the base end of the metal plate 3, and the power supply metal foil 2 is welded to the surface of the metal plate 3 on the light emitting space surrounding portion 82 side. On the outer circumference of the cylindrical glass member 1, for example, five power supply metal foils 2 are arranged in a strip shape in the axial direction of the glass member 1 in the axial direction of the glass member 1. And the metal foil 2 for power supply
Is welded to a dish-shaped metal member 51 at the other end on the side opposite to the direction in which it is welded to the metal plate 3, and is electrically connected to the external lead bar 5 via this metal member 51. . Note that the other sealing tube portion has the same structure, so description thereof will be omitted.

【0006】上記のように構成された封体8の発光空間
囲繞部82内に電極9を位置するように挿入配置する。
そして、この封体8を、ガラス旋盤などにより例えば1
00r.p.m程度の速度で周方向に回転させながら、
封止管部81の外部からバーナー等を用いて加熱処理し
て、この封止管部81の内周とガラス部材1の外周とを
給電用金属箔2を介して気密に溶着させる。内部リード
棒4の基端部側においては、封止管部81における内部
リード棒保持用筒体6と対向する部分のガラスを加熱押
圧するかあるいは封止管部81内に負圧を作用させて、
この負圧により内部リード棒保持用筒体6と溶着させる
ことにより、狭窄部Kを形成する。なお、他方の封止管
部も、同様の構造なので説明を省略する。
The electrode 9 is inserted and arranged so as to be positioned in the light emitting space surrounding portion 82 of the sealing body 8 configured as described above.
Then, the envelope 8 is attached to, for example, 1 by a glass lathe or the like.
00r. p. While rotating in the circumferential direction at a speed of about m,
Heat treatment is performed from the outside of the sealing tube portion 81 using a burner or the like, and the inner circumference of the sealing tube portion 81 and the outer circumference of the glass member 1 are hermetically welded via the metal foil 2 for power supply. On the base end side of the internal lead rod 4, the glass in the portion of the sealing tube portion 81 facing the internal lead rod holding cylinder 6 is heated or pressed, or a negative pressure is applied to the inside of the sealing tube portion 81. hand,
The narrowed portion K is formed by welding the internal lead rod holding cylinder 6 with this negative pressure. Note that the other sealing tube portion has the same structure, so description thereof will be omitted.

【0007】[0007]

【発明が解決しようとする課題】しかしながら、以上の
ような構成の放電ランプでは、封止管部81の加熱処理
工程において、次のような問題が生じる。
However, in the discharge lamp having the above structure, the following problems occur in the heat treatment process of the sealing tube portion 81.

【0008】ガラス部材1の金属板3と接している一端
面またはその近傍(図7中、a領域)、あるいは内部リ
ード棒保持用筒体6の金属板3と接している一端面また
はその近傍(図7中、b領域)において、封止管部81
の加熱処理工程中に微細なクラックが生じることがあ
る。このクラックの発生原因は、金属板3はモリブデン
等の高融点金属であるのに対し、ガラス部材1および内
部リード棒保持用筒体6はガラス製であり、膨張係数が
異なる。しかも、金属板3が内部リード棒4及び電極9
を支えるため硬性でなければならず、ある程度の大きな
厚みが必要である。その結果、ガラス部材1と内部リー
ド棒保持用筒体6が溶融し金属板3と接触したとに、ガ
ラス部材1と内部リード棒保持用筒体6が金属板3の伸
びようとする大きな力を受け、更に、その状態で冷却さ
れるときには、逆にガラス部材1と内部リード棒保持用
筒体6が金属板3の収縮しようとする大きな力を受ける
ことになり、その結果、ガラス部材1あるいは内部リー
ド棒保持用筒体6の金属板3と接している一端面または
その近傍で微細なクラックが生じるものである。さら
に、このような微細のクラックが発生している放電ラン
プを点灯すると、発光管囲繞部82内のガス圧が非常に
高くなるので、クラックが成長(クラックが大きくな
る)し、ひいては、ガスリークまたは封止管部81が破
壊するということになる。
One end face of the glass member 1 in contact with the metal plate 3 or its vicinity (region a in FIG. 7) or one end face of the inner lead rod holding cylinder 6 in contact with the metal plate 3 or its vicinity. In (b area in FIG. 7), the sealing tube portion 81
Fine cracks may occur during the heat treatment step. The cause of the cracks is that the metal plate 3 is a high melting point metal such as molybdenum, whereas the glass member 1 and the inner lead rod holding cylinder 6 are made of glass and have different expansion coefficients. Moreover, the metal plate 3 is connected to the inner lead bar 4 and the electrode 9.
It must be rigid and have a certain amount of thickness to support the. As a result, when the glass member 1 and the internal lead rod holding cylinder 6 are melted and come into contact with the metal plate 3, a large force that the glass member 1 and the internal lead rod holding cylinder 6 try to expand the metal plate 3 is generated. When the glass member 1 and the internal lead rod holding cylinder 6 receive a large force to shrink the metal plate 3 when cooled in that state, as a result, the glass member 1 Alternatively, fine cracks are generated on one end surface of the inner lead rod holding cylinder 6 in contact with the metal plate 3 or in the vicinity thereof. Further, when the discharge lamp in which such minute cracks are generated is lit, the gas pressure in the arc tube surrounding portion 82 becomes extremely high, and thus cracks grow (the cracks become large), and eventually gas leak or This means that the sealing tube portion 81 is destroyed.

【0009】本発明は以上のような事情に基づいてなさ
れたものであって、その目的は、封止管部内に配置され
たガラス部材または内部リード棒保持用筒体にクラック
が発生することを防止し、ひいては、ガスリークや封止
管部の破損を防止でき、長い使用寿命を得ることができ
る放電ランプを提供することになる。
The present invention has been made in view of the above circumstances, and an object thereof is to prevent cracks from being generated in the glass member or the internal lead rod holding cylinder arranged in the sealing tube portion. Therefore, it is possible to prevent a gas leak and damage to the sealing tube portion, and to provide a discharge lamp that can obtain a long service life.

【0010】[0010]

【課題を解決するための手段】請求項1に記載の本発明
の放電ランプは、ガラス製の封体の封止管部の内部に配
置された柱状のガラス部材と、このガラス部材の発光空
間囲繞部側に面する一側に配置された金属板と、基端が
前記金属板に固定され、先端が前記発光空間囲繞部内に
伸びて、その先端に電極が設けられた内部リード棒と、
この内部リード棒の外周と前記封体の封止管部の内周と
の間に配置されたガラス製の内部リード棒保持用筒体
と、前記ガラス部材の外周に沿って伸び、その一端部が
前記金属板に接続され、その他端部が外部リード棒に電
気的に接続された給電用金属箔とよりなり、前記ガラス
部材と前記金属板との間にこの金属板より厚みが小さい
金属箔を配置したことを特徴とする。
A discharge lamp of the present invention according to claim 1 is a columnar glass member arranged inside a sealing tube portion of a glass envelope, and a light emitting space of the glass member. A metal plate arranged on one side facing the surrounding part side, a base end fixed to the metal plate, a tip extending into the light emitting space surrounding part, and an internal lead rod provided with an electrode at the tip thereof,
An inner lead rod holding cylinder made of glass arranged between the outer periphery of the inner lead rod and the inner periphery of the sealing tube portion of the sealing body, and extending along the outer periphery of the glass member, and one end portion thereof. Is a metal foil for power supply, which is connected to the metal plate, and has the other end electrically connected to an external lead rod, and a metal foil having a smaller thickness than the metal plate between the glass member and the metal plate. Is arranged.

【0011】請求項2に記載の本発明の放電ランプは、
請求項1に記載の放電ランプにおいて、特に、前記ガラ
ス製の内部リード棒保持用筒体と前記金属板との間に前
記金属板より厚みが小さい金属箔を配置したことを特徴
とする。
The discharge lamp of the present invention according to claim 2 is
The discharge lamp according to claim 1 is characterized in that a metal foil having a thickness smaller than that of the metal plate is arranged between the glass inner lead rod holding cylinder and the metal plate.

【0012】請求項3に記載の本発明の放電ランプは、
請求項1または請求項2に記載の放電ランプにおいて、
特に、前記金属箔は、一方の側から他方の側に押圧形成
された突起部を有していることを特徴とする。
The discharge lamp of the present invention according to claim 3 is
In the discharge lamp according to claim 1 or 2,
In particular, the metal foil has a protrusion formed by pressing from one side to the other side.

【0013】[0013]

【作用】封体の封止管部において、ガラス部材と金属板
との間、及び、ガラス製の内部リード棒保持用筒体と金
属板との間に、高融点金属、例えばモリブデン製の金属
箔を配置することにより、封止管部の加熱処理工程中、
ガラス部材と金属板及びガラス製の内部リード棒保持用
筒体と金属板が溶着することを防止できる。さらに、こ
の金属箔は、内部リード棒及び電極を支えるための大き
な厚みがある金属板と比べて厚みが極めて小さいため、
封体の封止管部の加熱工程中及び冷却工程中に、ガラス
部材及び内部リード棒保持用筒体が溶融して金属箔と接
触した場合でも、金属箔がガラス部材及び内部リード棒
保持用筒体に与える金属箔自体の膨張力及び収縮力が極
めて小く、ガラス部材または内部リード棒保持用筒体に
クラックが発生することがない。
In the sealing tube portion of the sealing body, a refractory metal, for example, a metal made of molybdenum is provided between the glass member and the metal plate and between the glass inner lead rod holding cylinder and the metal plate. By arranging the foil, during the heat treatment process of the sealing tube,
It is possible to prevent the glass member, the metal plate, and the inner lead rod holding cylinder made of glass from being welded to the metal plate. Furthermore, since this metal foil has an extremely small thickness as compared with a metal plate having a large thickness for supporting the internal lead rod and the electrode,
During the heating process and cooling process of the sealing tube part of the envelope, even if the glass member and the internal lead rod holding cylinder melt and come into contact with the metal foil, the metal foil holds the glass member and the internal lead rod. The expansion and contraction forces of the metal foil itself applied to the cylinder are extremely small, and cracks do not occur in the glass member or the inner lead rod holding cylinder.

【0014】更には、その金属箔は一方の側から他方の
側に押圧形成された突起部を有しているので、ガラス部
材及び内部リード棒保持用筒体が溶融して金属箔と接触
した状態及びその後の冷却状態において、その突起部に
よって金属箔の膨張力及び収縮力を金属箔自身で吸収す
ることができるので、なお一層、ガラス部材または内部
リード棒保持用筒体にクラックが発生することがない。
なお、金属箔の突起部をガラス部材側及び内部リード棒
保持用筒体側に向けても金属板側に向けても作用効果は
同じである。
Further, since the metal foil has a protrusion formed by pressing from one side to the other side, the glass member and the internal lead rod holding cylinder melt and come into contact with the metal foil. In the state and the subsequent cooling state, since the expansion and contraction forces of the metal foil can be absorbed by the metal foil itself by the protrusions, cracks are further generated in the glass member or the internal lead rod holding cylinder. Never.
It should be noted that the action and effect are the same whether the protrusion of the metal foil is directed toward the glass member side and the internal lead rod holding cylinder side or toward the metal plate side.

【実施例】【Example】

【0015】図1は、箔シール構造を有する高圧水銀灯
の一例を示す説明図である。1は円筒状のガラス部材、
2は帯状の給電用金属箔、3はディスク状の金属板、4
は内部リード棒、5は外部リード棒、51は皿状の金属
部材、6は内部リード棒保持用筒体、7は外部リード棒
保持用筒体、Mは金属箔であり、これにより封着用導電
部Sが構成されている。また、9は電極、8は発光空間
囲繞部82とこれに続く封止管部81とからなる封体で
ある。
FIG. 1 is an explanatory view showing an example of a high pressure mercury lamp having a foil seal structure. 1 is a cylindrical glass member,
2 is a strip-shaped metal foil for feeding, 3 is a disc-shaped metal plate, 4
Is an inner lead rod, 5 is an outer lead rod, 51 is a dish-shaped metal member, 6 is an inner lead rod holding cylinder, 7 is an outer lead rod holding cylinder, and M is a metal foil. The conductive portion S is configured. Further, 9 is an electrode, and 8 is a sealing body composed of a light emitting space surrounding portion 82 and a sealing tube portion 81 following it.

【0016】円柱状のガラス部材1は、発光空間囲繞部
82側の一端面11に続く部分の周壁16に先細りのテ
ーパ状の外周面を有し、一端面11側の部分が円錐台状
に構成されている。また、封止管部81の外端側の他側
面12には、外部リード棒5を設置するための孔13が
形成されている。
The cylindrical glass member 1 has a tapered outer peripheral surface on a peripheral wall 16 of a portion following the one end surface 11 on the light emitting space surrounding portion 82 side, and a portion on the one end surface 11 side has a truncated cone shape. It is configured. Further, a hole 13 for installing the external lead rod 5 is formed on the other side surface 12 of the sealing tube portion 81 on the outer end side.

【0017】金属板3と内部リード棒4との接続方法は
特に限定されないが、例えば金属板3と内部リード棒4
とを付き合わせ溶接したり、あるいは、金属板3の中央
に穴を形成し、この穴に内部リード棒4の基端を挿入し
て両者を溶接する方法などを用いることができる。金属
板3を構成するための材料としては、タンタル、ニオ
ブ、タングステン、モリブデンなどの高融点金属が挙げ
られる。そして、電極9と内部リード棒4を支えるため
硬性が必要であり、その厚みは0.5mm程度である。
The method of connecting the metal plate 3 and the inner lead bar 4 is not particularly limited, but for example, the metal plate 3 and the inner lead bar 4 may be used.
It is possible to use a method such as butting and welding, or a method in which a hole is formed in the center of the metal plate 3 and the base end of the inner lead rod 4 is inserted into this hole and both are welded. Examples of the material for forming the metal plate 3 include high melting point metals such as tantalum, niobium, tungsten and molybdenum. Hardness is required to support the electrode 9 and the inner lead rod 4, and the thickness thereof is about 0.5 mm.

【0018】内部リード棒4の外周と封体8の封止管部
81の内周との間には、ガラス製の内部リード棒保持用
筒体6が配置されている。
Between the outer circumference of the inner lead rod 4 and the inner circumference of the sealing tube portion 81 of the sealing body 8, a glass-made inner lead rod holding cylinder 6 is arranged.

【0019】ガラス部材1と金属板3との間には、その
厚みが約15μmのモリブデン箔を1〜3枚重ねた金属
箔Mが配置されている。本実施例においては、モリブデ
ン箔を2枚重ねて金属箔Mの厚みを30μmとした。こ
の金属箔を図2に示す。この金属箔は、モリブデン製で
あるが、高融点金属であればよく、特に限定されるもの
ではない。また、図3は、金属箔に突起部が形成された
ものを示す。この突起部は、例えばプレスにより直径3
mm程度のエンボス加工を施すことによって形成するこ
とができる。なお、この金属箔Mの直径は、金属板3と
ほぼ同一である。
Between the glass member 1 and the metal plate 3, there is arranged a metal foil M in which one to three molybdenum foils each having a thickness of about 15 μm are stacked. In this example, two molybdenum foils were stacked to make the thickness of the metal foil M 30 μm. This metal foil is shown in FIG. This metal foil is made of molybdenum, but is not particularly limited as long as it is a high melting point metal. Further, FIG. 3 shows a metal foil having protrusions formed thereon. This protrusion has a diameter of 3
It can be formed by performing embossing of about mm. The diameter of the metal foil M is almost the same as that of the metal plate 3.

【0020】図4は、内部リード棒保持用筒体6の一例
を示す説明図である。この内部リード棒保持用筒体6
は、金属板3側の一端面61に続く一端部65が次第に
大径となるテーパ状に形成され、これに続いて形成され
た円柱状の胴部62が当該内部リード棒保持用筒体6の
発光空間囲繞部82側端まで伸びている。そして、胴部
62の外径Dは、封体8の封止管部81の内径に適合す
るものとされ、好ましくは、封体8の封止管部81の内
径より0.5mm〜1.0mm小さい径とされる。ま
た、内部リード棒保持用筒体6の金属板3側の一端面6
1の外径dが金属板3の径と実質上同一か、或いは、金
属板3の径の概略90%のものとされる。
FIG. 4 is an explanatory view showing an example of the internal lead rod holding cylinder 6. This internal lead rod holding cylinder 6
The one end portion 65 following the one end surface 61 on the metal plate 3 side is formed in a tapered shape in which the diameter gradually increases, and the cylindrical body portion 62 formed following this is formed into the internal lead rod holding tubular body 6. To the end of the light emitting space surrounding portion 82 side. The outer diameter D of the body portion 62 is adapted to the inner diameter of the sealing tube portion 81 of the sealing body 8, and preferably 0.5 mm to 1. The diameter is 0 mm smaller. In addition, one end surface 6 of the inner lead rod holding cylinder 6 on the metal plate 3 side
The outer diameter d of 1 is substantially the same as the diameter of the metal plate 3 or approximately 90% of the diameter of the metal plate 3.

【0021】また、内部リード棒保持用筒体6は、その
発光空間囲繞部82側の他端面63にすりばち状の凹所
64を有し、特に、他端面63の外周縁66はナイフエ
ッジ状に形成されていることが好ましい。
Further, the inner lead rod holding cylinder 6 has a groove-like recess 64 on the other end face 63 on the light emitting space surrounding portion 82 side, and in particular, the outer peripheral edge 66 of the other end face 63 has a knife edge shape. Is preferably formed.

【0022】内部リード棒保持用筒体6の筒孔の発光空
間囲繞部82側端部には、内部リード棒4の外周に巻き
付けられた、モリブデン線よりなるストッパー41が設
けられており、これにより、内部リード棒保持用筒体6
の位置ずれを防止することができる。
A stopper 41 made of molybdenum wire, which is wound around the outer circumference of the inner lead rod 4, is provided at the end of the inner hole of the inner lead rod holding cylinder 6 on the side of the light emitting space 82. The internal lead rod holding cylinder 6
It is possible to prevent the displacement of the position.

【0023】ガラス部材1の孔13の内部には、これに
適合する外径の外部リード棒5が挿入され、ガラス部材
1の他端面12には、外部リード棒5に接続されるよう
底部に穴が形成された皿状の金属部材51が配置され、
この金属部材51を介して、ガラス製の外部リード棒保
持用筒体7が配置されている。金属部材51を構成する
ための材料としては、モリブデンなどが挙げられる。
An outer lead rod 5 having an outer diameter suitable for the hole 13 is inserted into the hole 13 of the glass member 1, and the other end surface 12 of the glass member 1 has a bottom portion so as to be connected to the outer lead rod 5. A dish-shaped metal member 51 having holes is arranged,
The external lead rod holding cylinder 7 made of glass is arranged via the metal member 51. Examples of the material for forming the metal member 51 include molybdenum.

【0024】ガラス部材1の外周においては、その周方
向に互いに離間して、当該ガラス部材1の軸方向に伸び
る帯状のモリブデン製の給電用金属箔2が例えば5枚配
置され、これらの給電用金属箔2の各々の一端部21
は、ガラス部材1の周壁16のテーパ状の部分に沿って
伸び、さらに内部リード棒4の基端部に配置された金属
板3にスポット溶接などの手段によって接続されてい
る。また、給電用金属箔2の各々の他端部22は金属部
材51と接続されている。
On the outer periphery of the glass member 1, for example, five strip-shaped molybdenum-made molybdenum metal foils 2 extending in the axial direction of the glass member 1 are arranged so as to be spaced apart from each other in the circumferential direction. One end 21 of each metal foil 2
Extend along the tapered portion of the peripheral wall 16 of the glass member 1 and are further connected to the metal plate 3 arranged at the base end portion of the inner lead rod 4 by means such as spot welding. Further, the other end portion 22 of each of the power feeding metal foils 2 is connected to the metal member 51.

【0025】図5は、金属板3とガラス製の内部リード
棒保持用筒体6との間に金属箔M1も配置したものであ
り、この金属M1は、図6に示すように、その中心に内
部リード棒4が通るだけの孔が開いており、リング状で
ある。その他は、金属箔Mと同様である。なお、この金
属箔M1は突起部を有していないが、図3のように突起
部を設けても良い。図5中、図1と同一符号が同一部分
を示す。
FIG. 5 shows that a metal foil M1 is also arranged between the metal plate 3 and the glass inner lead rod holding cylinder 6, and this metal M1 has its center as shown in FIG. The inner lead rod 4 has a hole through which the inner lead bar 4 passes, and has a ring shape. Others are the same as the metal foil M. Although this metal foil M1 does not have a protrusion, it may have a protrusion as shown in FIG. 5, the same symbols as in FIG. 1 indicate the same parts.

【0026】そして、封着用導電部Sが配置された封体
8を例えばガラス旋盤により回転させながら封止管部8
1の外部から加熱処理することにより、ガラス部材1の
外周と封止管部81の内周とが給電用金属箔2を介して
気密に溶着され、更に、内部リード棒保持用筒体6の外
周と封止管部81の内周とが溶着され、狭窄部Kが形成
される。他方に封止管部においても、図示はしないが、
封着用導電部Sと同様に構成した封着用導電部を上述と
同様に接続される。
Then, the sealing tube portion 8 in which the sealing body 8 in which the conductive portion S for sealing is arranged is rotated by, for example, a glass lathe.
By heat-treating from the outside of 1, the outer periphery of the glass member 1 and the inner periphery of the sealing tube portion 81 are airtightly welded via the metal foil 2 for power feeding, and further the inner lead rod holding cylinder 6 The outer periphery and the inner periphery of the sealing tube portion 81 are welded to each other to form the narrowed portion K. On the other hand, even in the sealing tube portion, although not shown,
The sealing conductive portion configured similarly to the sealing conductive portion S is connected in the same manner as described above.

【0027】以上の実施例によれば、封体8の封止管部
81を加熱処理する工程において、膨張係数の異なるガ
ラス部材1と金属板3が、金属箔Mによって隔離されて
いるので、ガラス部材1と金属板3が溶着することがな
い。さらに、この金属箔Mはその厚みが30μmであ
り、金属板3は内部リード棒4及び電極9を支えるため
に0.5mmの厚みがあり、金属箔Mは金属板3と比較
してその厚みが極めて小さいため、封体の封止管部の加
熱工程中及び冷却工程中に、ガラス部材1が溶融して金
属箔Mと接触した場合でも、金属箔Mがガラス部材1に
与える膨張力及び収縮力が極めて小く、ガラス部材1に
クラックが発生することを防止できる。
According to the above embodiment, since the glass member 1 and the metal plate 3 having different expansion coefficients are separated by the metal foil M in the step of heat-treating the sealing tube portion 81 of the sealing body 8, The glass member 1 and the metal plate 3 do not weld. Further, the metal foil M has a thickness of 30 μm, the metal plate 3 has a thickness of 0.5 mm to support the internal lead rods 4 and the electrodes 9, and the metal foil M has a thickness larger than that of the metal plate 3. Is very small, even when the glass member 1 melts and comes into contact with the metal foil M during the heating step and the cooling step of the sealing tube portion of the sealed body, the expansion force that the metal foil M gives to the glass member 1 and The shrinkage force is extremely small, and it is possible to prevent the glass member 1 from cracking.

【0028】また、封体8の封止管部81を加熱処理す
る工程において、膨張係数の異なる内部リード棒保持用
筒体6と金属板3が、金属箔M1によって隔離されてい
るので、内部リード棒保持用筒体6と金属板3が溶着す
ることがない。さらに、この金属箔M1はその厚みが3
0μmであり、金属板3は内部リード棒4及び電極9を
支えるために0.5mmの厚みがあり、金属箔M1は金
属板3と比較してその厚みが極めて小さいため、封体の
封止管部の加熱工程中及び冷却工程中に、内部リード棒
保持用筒体6が溶融して金属箔M1と接触した場合で
も、金属箔M1が内部リード棒保持用筒体6がに与える
膨張力及び収縮力が極めて小く、内部リード棒保持用筒
体6にクラックが発生することを防止できる。
In the step of heat-treating the sealing tube portion 81 of the sealing body 8, the internal lead rod holding cylinder 6 and the metal plate 3 having different expansion coefficients are separated from each other by the metal foil M1. The lead rod holding cylinder 6 and the metal plate 3 are not welded. Furthermore, this metal foil M1 has a thickness of 3
The thickness is 0 μm, the metal plate 3 has a thickness of 0.5 mm to support the inner lead rod 4 and the electrode 9, and the metal foil M1 has an extremely small thickness as compared with the metal plate 3. Even when the internal lead rod holding cylinder 6 melts and comes into contact with the metal foil M1 during the heating process and the cooling process of the pipe portion, the expansion force that the metal foil M1 gives to the internal lead rod holding cylinder 6 In addition, the contraction force is extremely small, and it is possible to prevent the internal lead rod holding cylinder 6 from being cracked.

【0029】さらに、金属箔M,M1に突起部が形成さ
れている場合は、ガラス部材及び内部リード棒保持用筒
体が溶融して金属箔と接触した状態及びその後の冷却状
態において、その突起部によって金属箔の膨張力及び収
縮力を金属箔自身で吸収することができるので、なお一
層、ガラス部材または内部リード棒保持用筒体にクラッ
クが発生することを防止できる。
Further, when the metal foils M, M1 are formed with protrusions, the protrusions are formed in a state where the glass member and the internal lead rod holding cylinder are melted and brought into contact with the metal foil and in the subsequent cooling state. Since the expansion and contraction forces of the metal foil can be absorbed by the metal foil itself by the portion, it is possible to further prevent the glass member or the inner lead rod holding cylinder from being cracked.

【0030】また、ガラス部材1の外径は円柱状に限定
されず、用いる給電用金属箔2の枚数などに応じて適時
選択され、例えば八角柱状、六角柱状、その他としても
よい。また、金属部材51を用いずに、給電用金属箔2
の他端部22を外部リード棒5の外周に直接接続しても
良い。
Further, the outer diameter of the glass member 1 is not limited to a cylindrical shape, and may be appropriately selected according to the number of the power-supplying metal foils 2 used, and may be, for example, an octagonal pillar shape, a hexagonal pillar shape, or the like. Further, without using the metal member 51, the power feeding metal foil 2
The other end portion 22 of may be directly connected to the outer circumference of the external lead rod 5.

【0031】また、上記に説明した気密封止構造は、大
電流を必要とする他のランプにも利用することができ
る。
The hermetically sealed structure described above can also be used for other lamps that require a large current.

【0032】[0032]

【発明の効果】封体の封止管部において、ガラス部材と
金属板との間、及び、ガラス製の内部リード棒保持用筒
体と金属板との間に、高融点金属、例えばモリブデン製
の金属箔を配置することにより、封止管部の加熱処理工
程中、ガラス部材と金属板及びガラス製の内部リード棒
保持用筒体と金属板が溶着することを防止できる。さら
に、この金属箔は、内部リード棒及び電極を支えるため
の大きな厚みがある金属板と比べて厚みが極めて小さい
ため、封体の封止管部の加熱工程中及び冷却工程中に、
ガラス部材及び内部リード棒保持用筒体が溶融して金属
箔と接触した場合でも、金属箔がガラス部材及び内部リ
ード棒保持用筒体に与える金属箔自体の膨張力及び収縮
力が極めて小く、ガラス部材または内部リード棒保持用
筒体にクラックが発生することがない。
EFFECTS OF THE INVENTION In the sealing tube portion of the envelope, a refractory metal such as molybdenum is used between the glass member and the metal plate and between the glass inner lead rod holding cylinder and the metal plate. By arranging the metal foil, it is possible to prevent the glass member, the metal plate, and the inner lead rod holding cylinder made of glass from being welded to each other during the heat treatment step of the sealing tube portion. Furthermore, since this metal foil has an extremely small thickness as compared with a metal plate having a large thickness for supporting the internal lead rod and the electrode, during the heating step and cooling step of the sealing tube portion of the envelope,
Even when the glass member and the inner lead rod holding cylinder melt and come into contact with the metal foil, the expansion and contraction forces of the metal foil itself given to the glass member and the inner lead rod holding cylinder are extremely small. No cracks are generated in the glass member or the internal lead rod holding cylinder.

【0033】更には、その金属箔は突起部を有している
ので、ガラス部材及び内部リード棒保持用筒体が溶融し
て金属箔と接触した状態及びその後の冷却状態におい
て、その突起部によって金属箔の膨張力及び収縮力を金
属箔自身で吸収することができるので、なお一層、ガラ
ス部材または内部リード棒保持用筒体にクラックが発生
することがない。なお、金属箔の突起部をガラス部材側
及び内部リード棒保持用筒体側に向けても金属板側に向
けても作用効果は同じである。
Further, since the metal foil has a protrusion, the protrusion is generated by the protrusion when the glass member and the internal lead rod holding cylinder are in a molten state and are in contact with the metal foil and in a cooling state thereafter. Since the expansive force and the contractive force of the metal foil can be absorbed by the metal foil itself, the glass member or the internal lead rod holding cylinder is not cracked. It should be noted that the action and effect are the same whether the protrusion of the metal foil is directed toward the glass member side and the internal lead rod holding cylinder side or toward the metal plate side.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の放電ランプの一実施例の要部を示す説
明用縦断正面図である。
FIG. 1 is an explanatory vertical sectional front view showing a main part of an embodiment of a discharge lamp of the present invention.

【図2】本発明の放電ランプに用いられる金属箔の説明
図である。
FIG. 2 is an explanatory diagram of a metal foil used in the discharge lamp of the present invention.

【図3】本発明の放電ランプに用いられる金属箔の説明
図である。
FIG. 3 is an explanatory diagram of a metal foil used in the discharge lamp of the present invention.

【図4】内部リード棒保持用筒体の一例を示す説明図で
ある。
FIG. 4 is an explanatory view showing an example of an internal lead rod holding cylinder.

【図5】本発明の放電ランプの一実施例の要部を示す説
明用縦断正面図である。
FIG. 5 is a vertical sectional front view for explaining a main part of an embodiment of the discharge lamp of the present invention.

【図6】本発明の放電ランプに用いられる金属箔の説明
図である。
FIG. 6 is an explanatory diagram of a metal foil used in the discharge lamp of the present invention.

【図7】箔シール構造を有する従来の放電ランプの構成
を示す説明用縦断正面図である。
FIG. 7 is an explanatory vertical sectional front view showing a configuration of a conventional discharge lamp having a foil seal structure.

【符号の説明】[Explanation of symbols]

1 ガラス部材 2 給電用金属箔 3 金属板 4 内部リード棒 5 外部リード棒 6 内部リード棒保持用筒体 7 外部リード棒保持用筒体 8 封体 81 封止管部 82 発光空間囲繞部 9 電極 M 金属箔 M1 金属箔 S 封着用導電部 K 狭窄部 DESCRIPTION OF SYMBOLS 1 Glass member 2 Metal foil for power supply 3 Metal plate 4 Internal lead rod 5 External lead rod 6 Internal lead rod holding cylinder 7 External lead rod holding cylinder 8 Encapsulation 81 Sealing tube 82 Light emitting space surrounding 9 Electrode M Metal foil M1 Metal foil S Conductive part for sealing K Constriction part

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 ガラス製の封体の封止管部の内部に配置
された柱状のガラス部材と、 このガラス部材の発光空間囲繞部側に面する一側に配置
された金属板と、 基端が前記金属板に固定され、先端が前記発光空間囲繞
部内に伸びて、その先端に電極が設けられた内部リード
棒と、 この内部リード棒の外周と前記封体の封止管部の内周と
の間に配置されたガラス製の内部リード棒保持用筒体
と、 前記ガラス部材の外周に沿って伸び、その一端部が前記
金属板に接続され、その他端部が外部リード棒に電気的
に接続された給電用金属箔とよりなる放電ランプにおい
て、 前記ガラス部材と前記金属板との間にこの金属板より厚
みが小さい金属箔を配置したことを特徴とする放電ラン
プ。
1. A columnar glass member arranged inside a sealing tube portion of a glass envelope, and a metal plate arranged on one side of the glass member facing the light emitting space surrounding portion side. An inner lead rod having an end fixed to the metal plate, a tip extending into the light emitting space surrounding portion, and an electrode provided at the tip, and an outer circumference of the inner lead rod and a sealing tube portion of the sealing body. A glass inner lead rod holding cylinder arranged between the outer circumference and the outer circumference of the glass member, one end of which is connected to the metal plate and the other end of which is electrically connected to the outer lead rod. A discharge lamp comprising a power-supplying metal foil connected electrically, wherein a metal foil having a thickness smaller than that of the metal plate is arranged between the glass member and the metal plate.
【請求項2】 前記ガラス製の内部リード棒保持用筒体
と前記金属板との間に前記金属板より厚みが小さい金属
箔を配置したことを特徴とする請求項1に記載の放電ラ
ンプ。
2. The discharge lamp according to claim 1, wherein a metal foil having a thickness smaller than that of the metal plate is arranged between the glass inner lead rod holding cylinder and the metal plate.
【請求項3】 前記金属箔は、一方の側から他方の側に
押圧形成された突起部を有していることを特徴とする請
求項1または請求項2に記載の放電ランプ。
3. The discharge lamp according to claim 1, wherein the metal foil has a protrusion formed by pressing from one side to the other side.
JP14009095A 1995-05-16 1995-05-16 Discharge lamp Expired - Lifetime JP3228073B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP14009095A JP3228073B2 (en) 1995-05-16 1995-05-16 Discharge lamp
KR1019960015495A KR100389998B1 (en) 1995-05-16 1996-05-10 Discharge lamp
DE19618967A DE19618967A1 (en) 1995-05-16 1996-05-10 Gas discharge lamp
TW085105954A TW346637B (en) 1995-05-16 1996-05-20 Discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14009095A JP3228073B2 (en) 1995-05-16 1995-05-16 Discharge lamp

Publications (2)

Publication Number Publication Date
JPH08315780A true JPH08315780A (en) 1996-11-29
JP3228073B2 JP3228073B2 (en) 2001-11-12

Family

ID=15260727

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14009095A Expired - Lifetime JP3228073B2 (en) 1995-05-16 1995-05-16 Discharge lamp

Country Status (4)

Country Link
JP (1) JP3228073B2 (en)
KR (1) KR100389998B1 (en)
DE (1) DE19618967A1 (en)
TW (1) TW346637B (en)

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DE19618967A1 (en) 1996-11-21
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KR100389998B1 (en) 2003-09-19
TW346637B (en) 1998-12-01

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