JPH1116537A - Short arc discharge lamp - Google Patents
Short arc discharge lampInfo
- Publication number
- JPH1116537A JPH1116537A JP18323097A JP18323097A JPH1116537A JP H1116537 A JPH1116537 A JP H1116537A JP 18323097 A JP18323097 A JP 18323097A JP 18323097 A JP18323097 A JP 18323097A JP H1116537 A JPH1116537 A JP H1116537A
- Authority
- JP
- Japan
- Prior art keywords
- foil
- electrode core
- seal part
- cross
- quartz
- 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.)
- Pending
Links
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、主として外管を設
けずに反射鏡と組み合わせて用いられる光学的に効率が
良く、映像用機器あるいは光学用機器の光源として用い
られるショートアーク放電ランプに関し、特にその放電
容器の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a short arc discharge lamp mainly used in combination with a reflector without an outer tube, which is optically efficient, and is used as a light source for video equipment or optical equipment. In particular, it relates to improvement of the discharge vessel.
【０００２】[0002]
【従来の技術】近年、小型高密度の液晶パネルと光学部
品とを組み合わせた液晶プロジェクタは、その性能の良
さと簡易であるという利点から、プレゼンテーション用
の機器として利用されている。又、パーソナルコンピュ
ータと組み合わせてワークステーション等に利用するこ
とも考えられている。そして、光源として石英製放電容
器の両端に封着した電極間距離を短くしたショートアー
クメタルハライドランプ等が用いられている。2. Description of the Related Art In recent years, a liquid crystal projector in which a small and high-density liquid crystal panel and optical components are combined has been used as a presentation device because of its good performance and its simplicity. It is also considered to use it for a workstation or the like in combination with a personal computer. As a light source, a short arc metal halide lamp or the like having a reduced distance between electrodes sealed at both ends of a quartz discharge vessel is used.
【０００３】液晶プロジェクタ用光源としてのショート
アークメタルハライドランプは集光効率を向上させるた
めに、電極間距離をより短くした短アーク化が望まれ、
又、ランプ点灯装置の面からは、放電容器からの熱ロス
を少なくするために点灯動作時のランプ電圧が高いこと
が要望されている。このため、放電容器内にバッファガ
スとしての水銀を多量に封入する必要がある。A short arc metal halide lamp as a light source for a liquid crystal projector is desired to have a shorter arc with a shorter distance between electrodes in order to improve the light collection efficiency.
Further, from the aspect of the lamp lighting device, it is required that the lamp voltage during the lighting operation be high in order to reduce heat loss from the discharge vessel. For this reason, it is necessary to seal a large amount of mercury as a buffer gas in the discharge vessel.
【０００４】[0004]
【発明が解決しようとする課題】そこで、一般に行なわ
れている製造方法により水銀を多量に封入したランプを
製作しようとする場合、石英容器の両端を封止する、い
わゆるピンチシール方式では製造上のバラツキ等によ
り、ランプ完成後、使用の際の動作時の内圧により石英
容器が破裂することがある。Therefore, when manufacturing a lamp in which a large amount of mercury is sealed by a generally used manufacturing method, a so-called pinch seal method for sealing both ends of a quartz container, which is a manufacturing method, is required. After the lamp is completed, the quartz container may rupture due to internal pressure during operation due to variations and the like.
【０００５】図６及び図７は、一般的に使用されている
放電容器の概略説明図及び封着部の縦断面図を示す。石
英製の発光管２１の両端に一体的に封着部２２，２３が
形成され、該封着部に電極部の電極芯棒２４と外部リー
ド線２５とが金属箔２６を介して一体的に埋設されてい
る。そして、石英製発光管は前記したピンチシール方法
により製造されるが、ランプ点灯中管内の圧力は８０気
圧程度となり、製造条件を十分に整えても、初期破裂が
約２％発生するという問題がある。FIGS. 6 and 7 are a schematic explanatory view of a generally used discharge vessel and a longitudinal sectional view of a sealing portion. Sealing portions 22 and 23 are integrally formed at both ends of a quartz arc tube 21, and an electrode core bar 24 of an electrode portion and an external lead wire 25 are integrally formed on the sealing portion via a metal foil 26. It is buried. The quartz arc tube is manufactured by the above-described pinch sealing method. However, the pressure in the tube during lamp operation is about 80 atm. Even if the manufacturing conditions are sufficiently adjusted, about 2% of initial rupture occurs. is there.
【０００６】なお、前記ピンチシール方式にかえて、ラ
ンプ動作時の耐圧性を考慮して溶封による封止方法も考
えられるが、加工時の工数が多く量産的でなく、かつコ
スト高であるという問題がある。[0006] Instead of the pinch seal method, a sealing method by fusing may be considered in consideration of the pressure resistance at the time of lamp operation. However, the number of steps in the processing is large, not mass production, and the cost is high. There is a problem.
【０００７】本発明は前記に鑑みてなされたもので、ピ
ンチシール方式のランプ製造方法により製作され、ラン
プ点灯動作時の水銀蒸気圧をより高く設定しかつ短アー
ク化に伴なう種々の制限にも対応し、耐圧性が良好で封
着部のクラック等が生じない長寿命のショートアーク放
電ランプ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 is manufactured by a pinch seal type lamp manufacturing method, in which the mercury vapor pressure at the time of lamp lighting operation is set higher and various limitations associated with shortening the arc. It is an object of the present invention to provide a long-life short arc discharge lamp which has good pressure resistance and does not cause cracks or the like in a sealed portion.
【０００８】[0008]
【課題を解決するための手段】上記問題を解決するた
め、本発明は、石英製放電容器の両端に機械加工による
封着部を形成し、該封着部に金属箔を介して一対の電極
芯棒を有する電極と外部リード線とを一体的に埋設し、
内部に発光物質を封入してなり、前記封着部は電極芯棒
周辺の石英断面形状が該封着部の電極芯棒とほぼ相似形
であり、かつ金属箔周辺の石英断面形状が金属箔の厚さ
方向に対して短く、該箔の幅方向に対して長い、ほぼ矩
形状に形成することを特徴とする。In order to solve the above-mentioned problems, the present invention provides a quartz discharge vessel in which sealing portions are formed at both ends of a quartz discharge vessel by machining, and a pair of electrodes are formed on the sealing portions via a metal foil. Embedding the electrode having the core rod and the external lead wire integrally,
A light-emitting substance is sealed therein, and the sealing portion has a quartz cross-sectional shape around the electrode core rod substantially similar to the electrode core rod at the sealing portion, and the quartz cross-sectional shape around the metal foil has a metal cross-sectional shape. Is formed in a substantially rectangular shape that is short in the thickness direction and long in the width direction of the foil.
【０００９】[0009]
【発明の実施の形態】以下、本発明を図面に基づき説明
する。図１は本発明の実施例であるショートアークメタ
ルハライドランプの一例を示す斜視図、図２は該ランプ
としての放電容器の斜視図である。図において、１は石
英ガラス製の発光管風袋（放電容器）で、該発光管１の
両端には封着部２，３が形成され、該封着部に電極部４
と電極部５とが埋め込み固定され、両電極部４，５間の
距離ｌすなわちアーク長は１．５ｍｍである。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an example of a short arc metal halide lamp according to an embodiment of the present invention, and FIG. 2 is a perspective view of a discharge vessel as the lamp. In the figure, reference numeral 1 denotes an arc tube tare (discharge vessel) made of quartz glass, sealing portions 2 and 3 are formed at both ends of the arc tube 1, and an electrode portion 4 is formed on the sealing portion.
And the electrode portion 5 are embedded and fixed, and the distance l between the two electrode portions 4 and 5, that is, the arc length is 1.5 mm.
【００１０】この様に構成した発光管１は、その中央部
の最大外径が９．０ｍｍ、最大内径が６．０ｍｍのほぼ
回転楕円体状に形成され、放電空間内の内容積は約０．
１５ｃｃである。封入添加物として、色再現性を良好と
するためのＤｙＩ3−ＮｄＩ3−ＣｓＩをそれぞれモル比
で８：２：１１として０．６ｍｇと、電極間のアークを
絞りかつ黒化を防止するための臭化水銀を０．１ｍｇ、
蒸気圧を高め青域発光を増加させるためのＩｎＩを０．
０８ｍｇの他に、始動用アルゴンガスを約３３，０００
Ｐａと、ランプ安定点灯時にランプ電圧が５０Ｖとなる
ようにバッファガスとしての水銀を１７ｍｇ封入してあ
る。The arc tube 1 constructed as described above is formed in a substantially spheroidal shape having a maximum outer diameter of 9.0 mm and a maximum inner diameter of 6.0 mm at the center thereof, and has an inner volume of about 0 mm. .
It is 15 cc. 0.6 mg of DyI 3 -NdI 3 -CsI in a molar ratio of 8: 2: 11 for improving color reproducibility as an encapsulating additive was used to narrow the arc between the electrodes and prevent blackening. 0.1 mg of mercury bromide,
InI for increasing the vapor pressure and increasing the blue emission is 0.1%.
08mg, and about 33,000 argon gas for starting.
17 mg of mercury as a buffer gas is sealed so that the lamp voltage becomes 50 V when the lamp is stably turned on.
【００１１】発光管１の両端に形成された封着部２，３
には、電極部４としての陽極と電極部５としての陰極と
が金属箔としてのモリブデン箔６，６の一端に接続され
かつ他端に外部リード線７，７が接続されて、埋設され
ている。陽極４はタングステンよりなり、その先端部を
φ１．８ｍｍ、長さ３．０ｍｍとした頭部４ａとφ０．
６ｍｍの電極芯棒４ｂとよりなる。又、陰極５はタング
ステン製のφ０．６ｍｍ、長さ９．０ｍｍの電極芯棒５
ｂの先端部を０．５ｍｍ露出し、該芯棒５ｂにφ０．４
ｍｍのタングステン線を巻回して長さ２．５ｍｍのコイ
ル部５ａを形成している。[0011] Sealing portions 2, 3 formed at both ends of the arc tube 1
, An anode as the electrode portion 4 and a cathode as the electrode portion 5 are connected to one end of molybdenum foils 6 and 6 as metal foils, and external lead wires 7 and 7 are connected to the other end and buried. I have. The anode 4 is made of tungsten, and has a head 4a having a tip of φ1.8 mm and a length of 3.0 mm, and a φ0.
It consists of a 6 mm electrode core rod 4b. The cathode 5 is a tungsten electrode rod 5 of φ0.6 mm and length 9.0 mm.
b is exposed by 0.5 mm, and φ0.4
The coil portion 5a having a length of 2.5 mm is formed by winding a 2.5 mm tungsten wire.
【００１２】そして、陽極４及び陰極５ともに発光管１
の管軸上の中央部に配設され、電極芯棒４ｂ，５ｂの他
端部（頭部４ａ、コイル部５ａの反対側）が石英封着部
２，３に埋設されている。該封着部には、長さ１９．０
ｍｍ、厚さ０．０１８ｍｍのモリブデン箔６が埋設され
ており、該箔の両端はエッジ部が形成され、その一端に
は電極芯棒４ｂ，５ｂの他端部が溶接により接続され、
該箔の他端にはφ０．６ｍｍの外部リード線７としての
モリブデン線が溶接されている。さらに、該リード線７
は外部の電力供給線や金属口金と接続される。なお、図
中８は排気管チップオフ部である。[0012] The anode 4 and the cathode 5 are both arc tubes 1
The other ends of the electrode core rods 4b and 5b (the opposite sides of the head 4a and the coil part 5a) are embedded in the quartz sealing parts 2 and 3. The sealing portion has a length of 19.0.
A molybdenum foil 6 having a thickness of 0.018 mm and a thickness of 0.018 mm is buried, edges of which are formed at both ends of the foil, and the other ends of the electrode core rods 4b and 5b are connected to one end by welding.
A molybdenum wire as an external lead wire 7 having a diameter of 0.6 mm is welded to the other end of the foil. Further, the lead wire 7
Is connected to an external power supply line or metal base. In the figure, reference numeral 8 denotes an exhaust pipe tip-off portion.
【００１３】発光管１は、硬質ガラス製の凹面反射鏡１
０の底部にセメントにより発光管の一端に固着した金属
口金を介して固定されている。該反射鏡は回転楕円面形
状で、その内面に酸化チタン、酸化珪素の多層膜を蒸着
し、コールドミラーといわれる誘電体多層膜１３を被着
した反射面を形成し、発光管１は該反射鏡のほぼ焦点位
置に配置されている。なお、図中１４は反射鏡１０の底
部に固定されたネジ付金属口金、１５は金属端子、１６
は電力供給線である。そして、反射鏡１０の底部側には
発光管１の陽極４が位置するようにしてショートアーク
メタルハライドランプを構成している。このようなラン
プは、安定器として電子安定器を用いて電力１５０Ｗ、
直流で管軸が水平となるように水平点灯される。The arc tube 1 is a concave reflecting mirror 1 made of hard glass.
0 is fixed to the bottom of the arc tube via a metal base fixed to one end of the arc tube by cement. The reflecting mirror has a spheroidal shape, and a multilayer film of titanium oxide and silicon oxide is deposited on its inner surface to form a reflecting surface on which a dielectric multilayer film 13 called a cold mirror is formed. It is located approximately at the focal point of the mirror. In the figure, reference numeral 14 denotes a metal base with a screw fixed to the bottom of the reflector 10; 15 denotes a metal terminal;
Is a power supply line. The short arc metal halide lamp is configured such that the anode 4 of the arc tube 1 is located on the bottom side of the reflecting mirror 10. Such a lamp has a power of 150 W using an electronic ballast as a ballast,
The lamp is lit horizontally so that the tube axis becomes horizontal with direct current.
【００１４】次に、本発明に係るショートアーク放電ラ
ンプの放電容器である石英発光管の封止方法について説
明する。本発明に係る封止方法も一般的なガラス加工に
用いられる機械的なピンチシール方法であるが、治具で
あるモールドを改良することにより、発光管封着部の形
状を特異な断面形状としている。すなわち、図２および
図３のＡ−Ａ線断面図に示すように、一方の発光管封着
部２の電極芯棒４ｂを封着する部分２ａは断面形状がほ
ぼ円形であり、封着される電極芯棒４ｂの断面形状と相
似形である。また、芯棒径φ０．６ｍｍに対して断面径
は約φ４．５ｍｍであり、埋設した芯棒長に合わせ約
３．５ｍｍの長さで断面円形としてあり、芯棒に溶接し
たモリブデン箔との溶接シロを含めてほぼ円形を基本と
する断面形状である。Next, a method for sealing a quartz arc tube which is a discharge vessel of a short arc discharge lamp according to the present invention will be described. The sealing method according to the present invention is also a mechanical pinch sealing method used for general glass processing.However, by improving the mold that is a jig, the shape of the arc tube sealing portion has a unique cross-sectional shape. I have. That is, as shown in the cross-sectional views taken along the line AA in FIGS. 2 and 3, a portion 2a of one of the arc tube sealing portions 2 for sealing the electrode core rod 4b has a substantially circular cross section, and is sealed. The shape is similar to the cross-sectional shape of the electrode core rod 4b. The cross-sectional diameter is about 4.5 mm with respect to the core rod diameter of 0.6 mm, and the cross-sectional diameter is about 3.5 mm in accordance with the length of the embedded core rod. The cross-sectional shape is basically circular, including the welding white.
【００１５】又、図２および図４のＢ−Ｂ線断面図に示
すように、一方の発光管封着部２のモリブテン箔６の主
たる部分を封着する部分２ｂの断面形状は、埋設したモ
リブデン箔形状に合わせ該箔の断面形状と相似形であ
り、該箔の幅方向の封着部断面の寸法は５ｍｍ、該箔の
厚さ方向の封着部断面の寸法は３ｍｍとしている。更
に、前記封着部２の芯棒部分２ａと箔部分２ｂとの境界
部は、約４５度の角度で、なめらかなほぼ円形から矩形
に変形した封着部が形成されるように、封着部全体を加
熱してモールドにより成形される。又、モールドは埋設
するモリブデン箔の厚さ方向を主にピンチシールする一
対のモールドと、該箔の幅方向をピンチシールする一対
のモールドの４方向からピンチシールするモールドとで
成形される。なお、前記実施例では、陽極４側について
説明したが、陰極５側も前記と同様に成形される。又、
モールドは抗折力を上げるため、図３に示すように、４
隅にリブが形成されるように加工してもよい。As shown in the sectional views taken along the line BB in FIGS. 2 and 4, the cross-sectional shape of the portion 2b of the one arc tube sealing portion 2 for sealing the main portion of the molybdenum foil 6 is buried. According to the shape of the molybdenum foil, the shape is similar to the cross-sectional shape of the foil. The dimension of the cross-section of the sealing portion in the width direction of the foil is 5 mm, and the size of the cross-section of the sealing portion in the thickness direction of the foil is 3 mm. Further, the boundary between the core bar portion 2a and the foil portion 2b of the sealing portion 2 is sealed at an angle of about 45 degrees so that a smooth sealing portion deformed from a substantially circular shape to a rectangular shape is formed. The entire part is heated and molded by a mold. The mold is formed by a pair of molds that mainly pinch seals the thickness direction of the molybdenum foil to be embedded, and a pair of molds that pinch seals from four directions of a pair of molds that pinch seals the width direction of the foil. In the above embodiment, the anode 4 side is described, but the cathode 5 side is formed in the same manner as described above. or,
As shown in FIG.
You may process so that a rib may be formed in a corner.
【００１６】次に実験例について説明する。本発明に係
るランプと従来ランプとの点灯中における耐圧性を確認
するために、前記した各製造方法により製作し、発光管
内に前記した添加物と水銀を１７ｍｇにかえて３０ｍｇ
を封入し、点灯中の水銀蒸気圧が１４０気圧となるよう
なランプを各２００本作成しランプの破壊試験を行なっ
たところ、従来ランプでは９５％〜９８％の確率で封着
部の破裂が生じるのに対して、本発明ランプでは２３％
の破裂頻度であり、しかもこのランプは破裂の原因が封
着部からではなく、発光管の排気管チップオフ部周辺を
起点として破裂していることを確認した。このことは、
本発明に係るランプは耐圧性が優れた発光管封着部を得
られることを示している。Next, an experimental example will be described. In order to confirm the pressure resistance during lighting of the lamp according to the present invention and the conventional lamp, the lamp was manufactured by each of the above-described manufacturing methods, and the additive and mercury in the arc tube were replaced by 30 mg instead of 17 mg.
Was sealed, and 200 lamps each having a mercury vapor pressure of 140 atm during operation were prepared and subjected to a lamp destruction test. With the conventional lamps, the sealing portion was ruptured at a probability of 95% to 98%. 23% in the lamp of the present invention,
It was also confirmed that this lamp was ruptured not from the sealed part but from the vicinity of the exhaust pipe tip off part of the arc tube. This means
It is shown that the lamp according to the present invention can obtain an arc tube sealing portion having excellent pressure resistance.
【００１７】又、図５に示すように、封着する陽極や陰
極の電極芯棒が小判形の断面形状の場合、芯棒周辺部の
封着部断面形状を芯棒の断面形状に合わせて、相似形と
すればよく、前記と同様な耐圧性を有する封着部が得ら
れることも確認された。更に、埋設される電極芯棒部の
長さに対して、該芯棒の断面形状に相似する封着部断面
の長さは、６０％〜１６０％の範囲に規定することによ
り、より耐圧性を高めることが確認された。Further, as shown in FIG. 5, when the electrode core rod of the anode or the cathode to be sealed has an oval cross-sectional shape, the cross-sectional shape of the sealing portion around the core rod is adjusted to the cross-sectional shape of the core rod. It was also confirmed that a sealing portion having the same pressure resistance as described above could be obtained. Further, the length of the cross section of the sealing portion, which is similar to the cross-sectional shape of the core rod, is set to be in the range of 60% to 160% with respect to the length of the electrode core rod to be buried. It was confirmed that it increased.
【００１８】前記実施例では、ショートアークメタルハ
ライドランプについて説明したが、放電容器内に水銀と
共に始動ガスを封入し、かつ水銀蒸気圧を高めた超高圧
のショートアーク水銀ランプにも適用可能であり、放電
容器内にキセノンガス等を高圧で封入した超高圧のショ
ートアークキセノンランプ等にも適用可能である。In the above embodiment, the short arc metal halide lamp has been described. However, the present invention is also applicable to an ultra-high pressure short arc mercury lamp in which a starting gas is sealed together with mercury in a discharge vessel and a mercury vapor pressure is increased. It is also applicable to an ultra-high pressure short arc xenon lamp or the like in which xenon gas or the like is sealed at a high pressure in a discharge vessel.
【発明の効果】以上実施例に基づいて説明したように、
本発明は、封着部に埋設する電極芯棒の断面形状に合わ
せた封着部断面と埋設する金属箔の断面形状に合わせた
封着部断面とを併せ持つ封着部をピンチシールすること
により、耐圧性の優れた発光管として短アーク化が可能
で、動作時のランプ電圧が高いランプが得られる。従っ
て、電気的に回路ロスの少ない電子安定器を使用できる
ばかりか、ランプを短アーク化とすることにより、光学
的に効率が良いショートアーク放電ランプが得られるの
で、省電力でかつ小型の液晶プロジェクタが可能とな
る。As described above with reference to the embodiments,
The present invention is to pinch seal a sealing portion having both a sealing portion cross section adapted to the cross-sectional shape of the electrode core bar embedded in the sealing portion and a sealing portion cross section adapted to the cross-sectional shape of the metal foil to be embedded. In addition, a short arc can be achieved as an arc tube having excellent pressure resistance, and a lamp having a high lamp voltage during operation can be obtained. Therefore, not only can an electronic ballast with a small circuit loss be used electrically, but also a short arc discharge lamp with high optical efficiency can be obtained by shortening the lamp, so that a power saving and small liquid crystal can be obtained. A projector becomes possible.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明に係るショートアークメタルハライドラ
ンプの一実施例を示す斜視図である。FIG. 1 is a perspective view showing one embodiment of a short arc metal halide lamp according to the present invention.
【図２】同じく放電容器としての発光管の斜視図であ
る。FIG. 2 is a perspective view of an arc tube as a discharge vessel.
【図３】図２のＡ−Ａ線断面図である。FIG. 3 is a sectional view taken along line AA of FIG. 2;
【図４】図２のＢ−Ｂ線断面図である。FIG. 4 is a sectional view taken along line BB of FIG. 2;
【図５】本発明の他の実施例に係る電極芯棒の斜視図及
び要部断面図である。FIG. 5 is a perspective view and a sectional view of a main part of an electrode core rod according to another embodiment of the present invention.
【図６】従来の発光管の概略説明図及び要部断面図であ
る。FIG. 6 is a schematic explanatory view and a sectional view of a main part of a conventional arc tube.
【図７】従来の発光管の概略説明図及び要部断面図であ
る。FIG. 7 is a schematic explanatory view and a cross-sectional view of a main part of a conventional arc tube.
１ 発光管 ２，３ 封着部 ４ 陽極 ４ａ 陽極頭部 ４ｂ 陽極芯棒 ５ 陰極 ５ａ 陰極コイル部 ５ｂ 陰極芯棒 ６ モリブデン箔 ７ 外部リード線 ８ 排気管チップオフ部 DESCRIPTION OF SYMBOLS 1 Arc tube 2 and 3 Sealing part 4 Anode 4a Anode head 4b Anode core rod 5 Cathode 5a Cathode coil part 5b Cathode core rod 6 Molybdenum foil 7 External lead wire 8 Exhaust pipe chip off part
───────────────────────────────────────────────────── フロントページの続き (72)発明者 漆原 嗣 埼玉県行田市壱里山町１−１ 岩崎電気株 式会社埼玉製作所内 (72)発明者 冨永 和志 埼玉県行田市壱里山町１−１ 岩崎電気株 式会社埼玉製作所内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tsutsumi Urushihara 1-1 Iriyama-cho, Gyoda-shi, Saitama Iwasaki Electric Co., Ltd. Saitama Works (72) Inventor Kazushi Tominaga 1-1 Iriyama-cho, Gyoda-shi, Saitama Iwasaki Saitama Manufacturing Co., Ltd.
Claims (2)
封着部を形成し、該封着部に金属箔を介して一対の電極
芯棒を有する電極と外部リード線とを一体的に埋設し、
内部に発光物質を封入してなるショートアーク放電ラン
プにおいて、前記封着部は電極芯棒周辺の石英断面形状
が該封着部の電極芯棒とほぼ相似形であり、かつ金属箔
周辺の石英断面形状が金属箔の厚さ方向に対して短く、
該箔の幅方向に対して長い、ほぼ矩形状に形成してある
ショートアーク放電ランプ。1. A sealed portion formed by machining at both ends of a quartz discharge vessel, and an electrode having a pair of electrode core rods and an external lead wire are embedded in the sealed portion via a metal foil. And
In a short arc discharge lamp having a light emitting substance sealed therein, the sealing portion has a quartz cross-sectional shape around an electrode core rod substantially similar to the electrode core rod at the sealing portion, and quartz around a metal foil. The cross-sectional shape is short in the thickness direction of the metal foil,
A short arc discharge lamp that is long in the width direction of the foil and is formed in a substantially rectangular shape.
は、電極芯棒断面とほぼ相似形である部分の長さが封着
部の電極芯棒の金属箔を除く長さの６０％〜１６０％で
あることを特徴とする請求項第１項記載のシートアーク
放電ランプ。2. A cross-sectional shape of the sealing portion around the electrode core is such that the length of a portion substantially similar to the electrode core cross-section has a length excluding a metal foil of the electrode core of the sealing portion. 2. The sheet arc discharge lamp according to claim 1, wherein said lamp is in the range of% to 160%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18323097A JPH1116537A (en) | 1997-06-25 | 1997-06-25 | Short arc discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18323097A JPH1116537A (en) | 1997-06-25 | 1997-06-25 | Short arc discharge lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1116537A true JPH1116537A (en) | 1999-01-22 |
Family
ID=16132067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18323097A Pending JPH1116537A (en) | 1997-06-25 | 1997-06-25 | Short arc discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1116537A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002358886A (en) * | 2001-06-04 | 2002-12-13 | Iwasaki Electric Co Ltd | Method for manufacturing metal vapor discharge lamp |
| JP2016076383A (en) * | 2014-10-07 | 2016-05-12 | 岩崎電気株式会社 | Method of manufacturing single cap lamp and single cap lamp |
-
1997
- 1997-06-25 JP JP18323097A patent/JPH1116537A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002358886A (en) * | 2001-06-04 | 2002-12-13 | Iwasaki Electric Co Ltd | Method for manufacturing metal vapor discharge lamp |
| JP4737706B2 (en) * | 2001-06-04 | 2011-08-03 | 岩崎電気株式会社 | Manufacturing method of metal vapor discharge lamp |
| JP2016076383A (en) * | 2014-10-07 | 2016-05-12 | 岩崎電気株式会社 | Method of manufacturing single cap lamp and single cap lamp |
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