JPH11149902A - Metallic vapor discharge lamp - Google Patents
Metallic vapor discharge lampInfo
- Publication number
- JPH11149902A JPH11149902A JP31402897A JP31402897A JPH11149902A JP H11149902 A JPH11149902 A JP H11149902A JP 31402897 A JP31402897 A JP 31402897A JP 31402897 A JP31402897 A JP 31402897A JP H11149902 A JPH11149902 A JP H11149902A
- Authority
- JP
- Japan
- Prior art keywords
- opening
- tube
- arc tube
- conductive tube
- conductive
- 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.)
- Withdrawn
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、金属蒸気放電灯に
関するものである。TECHNICAL FIELD The present invention relates to a metal vapor discharge lamp.
【０００２】[0002]
【従来の技術】この種の金属蒸気放電灯としては、発光
管内部に発光物質としてのナトリウムを封入した高圧ナ
トリウムランプがある。高圧ナトリウムランプは、図８
に示すように、例えば透光性セラミック又は単結晶アル
ミナから形成され両端に開口孔９が設けられた略円筒状
の発光管１と、一端に開口部２ａが形成されるとともに
他端に閉塞部２ｂが形成された導電管２とから構成さ
れ、導電管２は開口部２ａ側から発光管１の開口孔９に
挿入され、導電管２はセラミックセメント４により開口
孔９に気密に封着される。また、先端にコイル３ａを備
えた電極棒３が、導電管２の閉塞部２ｂに設けた孔２ｃ
内にコイル３ａを開口部２ａ側にして挿通され、チタニ
ウムからなるろう材１５により孔２ｃに気密に封着され
ている。そして、発光管１の内部には例えば発光物質と
してのナトリウム５と、始動用ガスとしてのキセノンガ
ス（図示せず）と、緩衝ガス用金属としての水銀（図示
せず）とが封入されている（特開平４−１２１９３１号
公報参照）。2. Description of the Related Art As a metal vapor discharge lamp of this type, there is a high-pressure sodium lamp in which sodium as a luminescent substance is sealed in an arc tube. The high pressure sodium lamp is shown in FIG.
As shown in FIG. 1, a substantially cylindrical arc tube 1 made of, for example, translucent ceramic or single crystal alumina and having openings 9 at both ends, an opening 2a formed at one end and a closed portion formed at the other end. The conductive tube 2 is formed into the opening 9 of the arc tube 1 from the opening 2a side, and the conductive tube 2 is hermetically sealed in the opening 9 by the ceramic cement 4. You. An electrode rod 3 having a coil 3a at the tip is provided with a hole 2c provided in a closed portion 2b of the conductive tube 2.
The coil 3a is inserted through the opening 2a side, and hermetically sealed in the hole 2c by a brazing material 15 made of titanium. Then, inside the arc tube 1, for example, sodium 5 as a luminescent substance, xenon gas (not shown) as a starting gas, and mercury (not shown) as a metal for a buffer gas are sealed. (See JP-A-4-121931).
【０００３】[0003]
【発明が解決しようとする課題】上述した高圧ナトリウ
ムランプでは、開口孔９内に挿入される導電管２の深さ
が規制棒８によって規制されており、導電管２の開口部
２ａの先端面が開口孔９の内側端面７と略面一になるよ
うに調整されている。したがって、発光管１と導電管２
とを接着するセラミックセメント４が放電空間に面して
おり、ランプ点灯中に発光管１内に封入されたナトリウ
ム５と放電空間に面したセラミックセメント４とが反応
して、ナトリウム５の量が減少するという問題があっ
た。また、ナトリウム５との反応によってセラミックセ
メント４が劣化し、発光管１と導電管２との接着部から
ナトリウム５がリークするという虞もあった。In the above-described high-pressure sodium lamp, the depth of the conductive tube 2 inserted into the opening hole 9 is regulated by the regulating rod 8, and the distal end surface of the opening 2a of the conductive tube 2 is controlled. Is adjusted so as to be substantially flush with the inner end face 7 of the opening hole 9. Therefore, the arc tube 1 and the conductive tube 2
And the ceramic cement 4 facing the discharge space reacts during the operation of the lamp, and the amount of sodium 5 is reduced. There was a problem of reduction. In addition, there is a possibility that the ceramic cement 4 is deteriorated due to the reaction with the sodium 5 and the sodium 5 leaks from the bonding portion between the arc tube 1 and the conductive tube 2.
【０００４】一方、発光管１内に封入した金属ハロゲン
化物をアーク放電により蒸発させ金属とハロゲンに解離
して金属特有の色を発光させるメタルハライドランプに
おいても、上述の高圧ナトリウムランプと同様に、発光
管１内に封入された金属ハロゲン化物と放電空間に面し
たセラミックセメント４とが激しく反応するため、金属
ハロゲン化物が減少したり、金属ハロゲン化物との反応
によってセラミックセメント４が劣化し、金属ハロゲン
化物がリークするという問題があった。On the other hand, a metal halide lamp which evaporates a metal halide sealed in an arc tube 1 by arc discharge to dissociate into a metal and a halogen to emit a color unique to the metal, similarly to the high-pressure sodium lamp described above. Since the metal halide enclosed in the tube 1 and the ceramic cement 4 facing the discharge space react violently, the metal halide is reduced or the ceramic cement 4 is deteriorated by the reaction with the metal halide, and the metal halide is deteriorated. There was a problem that the compound leaked.
【０００５】さらに、上述した高圧ナトリウムランプや
メタルハライドランプでは、電極棒３全体が放電空間に
晒されているため、放電空間中のイオンによって電極棒
３の電極材料（例えばタングステン）が電極棒３の表面
から放出されて（スパッタリング）、発光管１の内壁に
付着し、発光管１の端部が黒化するという問題もあっ
た。Further, in the above-described high-pressure sodium lamp and metal halide lamp, since the entire electrode rod 3 is exposed to the discharge space, the electrode material (for example, tungsten) of the electrode rod 3 is changed by ions in the discharge space. There is also a problem that the light is emitted from the surface (sputtering) and adheres to the inner wall of the arc tube 1, and the end of the arc tube 1 is blackened.
【０００６】本発明は上記問題点に鑑みて為されたもの
であり、請求項１乃至４の発明の目的は、発光管内部に
封入された封入物の減少や漏れを防止した金属蒸気放電
灯を提供することにある。さらに、請求項５の発明の目
的は、上記目的に加えて、電極のスパッタリングによる
発光管端部の黒化を防止した金属蒸気放電灯を提供する
ことにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a metal vapor discharge lamp capable of preventing a decrease in the amount of enclosed material enclosed in an arc tube and preventing leakage. Is to provide. It is still another object of the present invention to provide a metal vapor discharge lamp in which blackening of an arc tube end caused by sputtering of an electrode is prevented.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、請求項１の発明では、両端に開口孔が形成された発
光管と、一端に開口部が形成されるとともに他端に閉塞
部が形成され、開口部側に電極が配設された導電管とを
備え、導電管は発光管の開口孔に開口部側から挿入さ
れ、開口部の先端面が開口孔の内側端面よりも外側にあ
る状態で、導電管がセラミックセメントにより開孔孔に
封着されているので、導電管を発光管に封着するセラミ
ックセメントと放電空間との距離を長くして、発光管に
封入された発光物質とセラミックセメントとの反応を抑
制することができる。To achieve the above object, according to the first aspect of the present invention, an arc tube having an opening at both ends, an opening at one end and a closing portion at the other end. And a conductive tube in which an electrode is disposed on the opening side, wherein the conductive tube is inserted into the opening hole of the arc tube from the opening side, and the tip surface of the opening is outside the inner end surface of the opening hole. In this state, the conductive tube is sealed in the hole by ceramic cement, so the distance between the ceramic cement for sealing the conductive tube to the arc tube and the discharge space is increased, and the tube is sealed in the arc tube. The reaction between the luminescent substance and the ceramic cement can be suppressed.
【０００８】請求項２の発明では、両端に開口孔が形成
された発光管と、一端に開口部が形成されるとともに他
端に閉塞部が形成され、開口部側に電極が配設された導
電管とを備え、開口孔の周囲の発光管の両端面に導電管
の開口部が挿入される凹所を夫々設け、この凹所に導電
管が開口部側から夫々挿入され、開口部の先端面が凹所
の底に当接した状態で、導電管がセラミックセメントに
より開孔孔に封着されており、開口部の先端面が開口孔
の内側端面よりも外側に位置するので、導電管を発光管
に封着するセラミックセメントと放電空間との距離を長
くして、発光管に封入された発光物質とセラミックセメ
ントとの反応を抑制することができる。しかも、開口部
の先端面が凹所の底に当接した状態で導電管が発光管に
封着されるので、導電管を挿入する深さを調整するため
の規制棒を別途設ける必要がなく、導電管を挿入する深
さのばらつきを小さくすることができる。According to the second aspect of the present invention, an arc tube having openings at both ends, an opening at one end and a closing portion at the other end, and an electrode disposed on the opening side. A conductive tube, and a concave portion into which the opening of the conductive tube is inserted is provided at both end surfaces of the light emitting tube around the opening hole, and the conductive tubes are inserted into the concave portion from the opening side, respectively. The conductive tube is sealed in the hole with ceramic cement while the tip surface is in contact with the bottom of the recess, and since the tip surface of the opening is located outside the inner end surface of the opening, the conductive tube is By increasing the distance between the ceramic cement for sealing the tube to the arc tube and the discharge space, it is possible to suppress the reaction between the luminescent substance sealed in the arc tube and the ceramic cement. In addition, since the conductive tube is sealed to the arc tube in a state where the end surface of the opening is in contact with the bottom of the recess, there is no need to separately provide a regulating rod for adjusting the depth at which the conductive tube is inserted. In addition, variations in the depth at which the conductive tube is inserted can be reduced.
【０００９】請求項３の発明では、請求項２の発明にお
いて、上記凹所が溝からなっており、導電管の開口部の
先端が溝内部に嵌まるので、導電管を発光管に封着する
セラミックセメントを放電空間から遮蔽することによ
り、発光管に封入された発光物質とセラミックセメント
との反応をさらに抑制することができ、そのうえ、導電
管の軸方向と直交する面内のずれが小さくなり、対向配
置された電極の軸調整を容易に行うことができる。According to a third aspect of the present invention, in the second aspect of the present invention, the recess is formed by a groove, and the tip of the opening of the conductive tube fits inside the groove, so that the conductive tube is sealed to the arc tube. By shielding the ceramic cement from the discharge space, the reaction between the luminescent substance sealed in the arc tube and the ceramic cement can be further suppressed, and furthermore, the displacement in the plane orthogonal to the axial direction of the conductive tube is reduced. Thus, it is possible to easily adjust the axes of the electrodes arranged to face each other.
【００１０】請求項４の発明では、両端に開口孔が形成
された発光管と、一端に開口部が形成されるとともに他
端に閉塞部が形成され、開口部側に電極が配設された導
電管とを備え、開口孔の周囲の発光管の両端面に導電管
の開口部内面と当接する突部を夫々設け、導電管は発光
管両端の突部に開口部側から夫々挿入され、開口部の先
端面が発光管の端面に当接した状態で、導電管がセラミ
ックセメントにより発光管に封着されており、開口部の
先端面が発光管の両端面に位置するので、導電管を発光
管に封着するセラミックセメントと放電空間との距離を
長くすることができ、しかも発光管の端面に形成された
突部が導電管の開口部内面と当接しているので、セラミ
ックセメントを放電空間から遮蔽することにより、発光
管に封入された発光物質とセラミックセメントとの反応
をさらに抑制することができる。According to the fourth aspect of the present invention, an arc tube having openings at both ends, an opening at one end and a closing portion at the other end, and an electrode disposed on the opening side. A conductive tube is provided, and projections are provided on both end surfaces of the arc tube around the opening hole, the projections being in contact with the inner surface of the opening of the arc tube. The conductive tube is sealed to the arc tube with ceramic cement in a state where the distal end surface of the opening is in contact with the end surface of the arc tube, and since the distal end surface of the opening is located at both end surfaces of the arc tube, the conductive tube is The distance between the ceramic cement that seals the arc tube to the discharge tube and the discharge space can be lengthened, and the protrusion formed on the end face of the arc tube contacts the inner surface of the opening of the conductive tube. By shielding from the discharge space, the light It is possible to further suppress the reaction between the substance and the ceramic cement.
【００１１】請求項５の発明では、請求項１乃至４の発
明において、電極の先端が、発光管端部の開口孔の内側
端面と略面一に配置されているので、放電空間に晒され
る電極の部位を小さくすることができる。According to a fifth aspect of the present invention, in the first to fourth aspects of the present invention, since the tip of the electrode is disposed substantially flush with the inner end face of the opening of the arc tube end, it is exposed to the discharge space. The area of the electrode can be reduced.
【００１２】[0012]
【発明の実施の形態】本発明の実施の形態を図面を参照
して説明する。（実施形態１）本実施形態の金属蒸気放
電灯たる高圧ナトリウムランプの断面図を図１に示す。
この高圧ナトリウムランプは、両端に開口孔９が形成さ
れた略円筒状の発光管１と、一端に開口部２ａが形成さ
れるとともに他端に閉塞部２ｂが形成され、開口部２ａ
を内側にして発光管１両端の開口孔９内に挿入された導
電管２，２とからなり、発光管１と導電管２，２とは例
えばＹ2 Ｏ3 −ＳｒＯ−ＣａＯ−Ａｌ2Ｏ3 からなるセ
ラミックセメント４で接着される。尚、開口孔９の内径
は、導電管２の開口部２ａの外径よりも大きい値に形成
されている。Embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 1 shows a cross-sectional view of a high-pressure sodium lamp as a metal vapor discharge lamp of the present embodiment.
This high-pressure sodium lamp has a substantially cylindrical arc tube 1 having openings 9 at both ends, an opening 2a formed at one end, and a closed portion 2b formed at the other end.
Made from the inserted conductive tubes 2,2 Metropolitan and inward to the discharge lamp 1 in both ends of the opening hole 9, the arc tube 1 and the conductive tube 2, 2 for example Y 2 O 3 -SrO-CaO- Al 2 O It is bonded with a ceramic cement 4 made of 3 . The inner diameter of the opening 9 is larger than the outer diameter of the opening 2 a of the conductive tube 2.
【００１３】発光管１は透光性セラミック又は単結晶ア
ルミナからなり、例えば内径が６ｍｍ、外径が７．４ｍ
ｍ、全長が６０ｍｍの略円筒状に形成されている。また
導電管２はニオブ（Ｎｂ）と１％のジルコニウム（Ｚ
ｒ）とから形成され、規制棒８によって発光管１の開口
孔９内に挿入される深さが調整されており、導電管２の
開口部２ａの端面は発光管１の開口孔９の内側端面７よ
りも外側にくるように調整されている。The arc tube 1 is made of translucent ceramic or single-crystal alumina, and has, for example, an inner diameter of 6 mm and an outer diameter of 7.4 m.
m, a substantially cylindrical shape having a total length of 60 mm. The conductive tube 2 is made of niobium (Nb) and 1% zirconium (Z
r), the depth of insertion into the opening 9 of the arc tube 1 is adjusted by the regulating rod 8, and the end face of the opening 2 a of the conductive tube 2 is inside the opening 9 of the arc tube 1. It is adjusted so that it comes outside the end face 7.
【００１４】ここに、発光管１の内部には、例えば発光
物質としてのナトリウム５が４ｍｇ、始動用ガスとして
のキセノンガスが２７００Ｐａ、緩衝ガス用金属として
の水銀が１６ｍｇ封入される。また、一端にタングステ
ン線からなる二層巻きコイル３ａが設けられた電極棒３
の他端は、コイル３ａを開口部２ａ側にして閉塞部２ｂ
に穿設された孔２ｃに挿通され、先端を孔２ｃから外部
に突出した状態で例えばチタニウムよりなるろう材１５
で導電管２に気密に封着される。Here, for example, 4 mg of sodium 5 as a luminescent substance, 2700 Pa of xenon gas as a starting gas, and 16 mg of mercury as a metal for a buffer gas are sealed in the arc tube 1. An electrode rod 3 having a double-layered coil 3a made of a tungsten wire at one end.
The other end of the closed part 2b is set with the coil 3a on the side of the opening 2a.
The brazing material 15 made of, for example, titanium is inserted through the hole 2c formed in the
To hermetically seal the conductive tube 2.
【００１５】上述のように、導電管２が開口孔９内に挿
入される深さは規制棒８によって所望の深さに規制され
ており、導電管２を開口孔９内に浅めに挿入することに
より、発光管１と導電管２とを接着するセラミックセメ
ント４と放電空間との距離が長くなり、そのうえセラミ
ックセメント４の温度が低下するので、セラミックセメ
ント４と発光管１内に封入されたナトリウム５との反応
を抑制することができる。したがって、セラミックセメ
ント４とナトリウム５との反応によって、ナトリウム５
が減少したり、セラミックセメント４が劣化してナトリ
ウム５がリークするのを防止できる。As described above, the depth at which the conductive tube 2 is inserted into the opening 9 is regulated to a desired depth by the regulating rod 8, and the conductive tube 2 is inserted into the opening 9 slightly. As a result, the distance between the ceramic cement 4 for bonding the arc tube 1 and the conductive tube 2 and the discharge space increases, and the temperature of the ceramic cement 4 decreases. The reaction with sodium 5 can be suppressed. Therefore, the reaction between the ceramic cement 4 and the sodium 5 causes the sodium 5
Can be prevented, and the leakage of sodium 5 due to the deterioration of the ceramic cement 4 can be prevented.
【００１６】ところで、上述した従来の高圧ナトリウム
ランプを１０本製作して、入力１５０Ｗで５時間３０分
点灯し、その後３０分消灯する点灯サイクルを繰り返し
て寿命試験を行ったところ、点灯時間が１２０００時間
となった時点で、発光管１と導電管２との接着部が原因
と思われるナトリウム５のリークが４本発生した。一
方、本実施形態の高圧ナトリウム放電灯を１０本製作
し、同様の寿命試験を行ったところ、点灯時間が１２０
００時間の時点でナトリウム５のリークが発生した高圧
ナトリウムランプは１本に低減した。By the way, 10 conventional high pressure sodium lamps as described above were manufactured, and a life test was performed by repeating a lighting cycle in which the power was turned on at 150 W for 5 hours and 30 minutes and then turned off for 30 minutes. At the time point, four leaks of sodium 5 occurred, which are considered to be caused by the bonded portion between the arc tube 1 and the conductive tube 2. On the other hand, when ten high-pressure sodium discharge lamps of the present embodiment were manufactured and the same life test was performed, the lighting time was 120 hours.
At the time of 00 hours, the number of high-pressure sodium lamps in which the leakage of sodium 5 occurred was reduced to one.
【００１７】尚、発光管１の両端部の厚み（つまり開口
孔９の長さ）や、セラミックセメント４による気密保持
性を考慮して、気密保持性が充分に得られる範囲内で、
発光管１の開口孔９の内側端面７から、導電管２の開口
部２ａの先端面までの距離をできるだけ長くするのが望
ましく、両者の間の距離を長くすることによって、セラ
ミックセメント４とナトリウム５との反応をさらに低減
することができる。In consideration of the thickness of the two ends of the arc tube 1 (that is, the length of the opening 9) and the hermeticity of the ceramic cement 4, the hermeticity is maintained within a range where the hermeticity is sufficiently obtained.
It is desirable to make the distance from the inner end face 7 of the opening 9 of the arc tube 1 to the tip face of the opening 2a of the conductive tube 2 as long as possible. By increasing the distance between the two, the ceramic cement 4 and the sodium 5 can be further reduced.
【００１８】（実施形態２）本実施形態の高圧ナトリウ
ムランプの一部省略せる断面図を図２に示す。尚、実施
形態１の高圧ナトリウムランプと同様の構成要素には同
一の符号を付して、その説明を省略する。本実施形態で
は、実施形態１の高圧ナトリウムランプにおいて、発光
管１の端部に設けた開口孔９の孔径を導電管２の外径よ
りも小さくしており、開口孔９の周囲の発光管１の端面
には、開口孔９と同心で導電管２の外径よりも径の大き
い凹所たる座ぐり穴１０が形成されており、開口孔９と
座ぐり穴１０との境目が段部１１となっている。(Embodiment 2) FIG. 2 is a cross-sectional view of the high-pressure sodium lamp according to this embodiment, in which a part of the high-pressure sodium lamp can be omitted. Note that the same components as those of the high-pressure sodium lamp of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. In the present embodiment, in the high-pressure sodium lamp of Embodiment 1, the diameter of the opening 9 provided at the end of the arc tube 1 is smaller than the outer diameter of the conductive tube 2, and the arc tube around the opening 9 is formed. A counterbore 10 is formed on the end face of the conductive tube 2 and is concentric with the opening 9 and larger in diameter than the outer diameter of the conductive tube 2. A boundary between the opening 9 and the counterbore 10 is a stepped portion. It is 11.
【００１９】例えば、座ぐり穴１０の内径は４．２ｍ
ｍ、深さ（ｄ1 ）は２ｍｍに形成され、開口孔９の内径
は３．２ｍｍ、深さ（ｄ2 ）は１ｍｍに形成されてい
る。ここで、導電管２の外径は開口孔９の内径よりも大
きく、且つ、座ぐり穴１０の内径よりも小さい値に形成
されているので、導電管２を開口部２ａ側から開口孔９
内に挿入すると、開口部２ａの端面が座ぐり孔１０の底
（すなわち段部１１）に当接し、導電管２を開口孔９内
にそれ以上挿入することができないため、実施形態１の
高圧ナトリウムランプのように、導電管２の挿入を規制
するための規制棒８を別途設ける必要がなく、ランプの
製造工程を簡単にできる。For example, the inside diameter of the counterbore 10 is 4.2 m.
m, the depth (d 1 ) is formed at 2 mm, the inner diameter of the opening 9 is 3.2 mm, and the depth (d 2 ) is 1 mm. Here, since the outer diameter of the conductive tube 2 is formed to be larger than the inner diameter of the opening 9 and smaller than the inner diameter of the counterbore 10, the conductive tube 2 is moved from the opening 2a side to the opening 9a.
When inserted into the opening, the end face of the opening 2a comes into contact with the bottom of the counterbore 10 (that is, the step 11), and the conductive tube 2 cannot be inserted into the opening 9 any more. Unlike a sodium lamp, there is no need to separately provide a regulating rod 8 for regulating the insertion of the conductive tube 2, and the lamp manufacturing process can be simplified.
【００２０】而して、導電管２を発光管１の開口孔９内
に挿入し、導電管２の開口部２ａの端面を段部１１に当
接させた状態で、導電管２をセラミックセメント４によ
り発光管１に封着する。この時、セラミックセメント４
は導電管２の外面と座ぐり穴１０の内面との間に接着さ
れ、セラミックセメント４が開口孔９の内面側に露出し
ておらず、セラメックセメント４が放電空間に晒されて
いないので、セラミックセメント４と発光管１内に封入
されたナトリウム５との反応を抑制することができる。The conductive tube 2 is inserted into the opening 9 of the arc tube 1, and the conductive tube 2 is connected to the ceramic cement with the end surface of the opening 2 a of the conductive tube 2 abutting against the step 11. 4 seals with the arc tube 1. At this time, ceramic cement 4
Is bonded between the outer surface of the conductive tube 2 and the inner surface of the counterbore 10, the ceramic cement 4 is not exposed on the inner surface side of the opening 9, and the ceramic cement 4 is not exposed to the discharge space. Thus, the reaction between the ceramic cement 4 and the sodium 5 sealed in the arc tube 1 can be suppressed.
【００２１】ここで、上述した図２に示す高圧ナトリウ
ムランプを製作し、１５０Ｗ入力で５時間３０分点灯
し、その後３０分消灯する点灯サイクルを繰り返したと
ころ、点灯時間が１２０００時間の時点でナトリウムの
リークが発生したものはなく、従来の高圧ナトリウムラ
ンプに比べてナトリウムのリークが減少する。ところ
で、セラミックセメント４と放電空間との間の距離を長
くするためには、発光管１の端部の厚みやセラミックセ
メント４による気密保持性を考慮して、充分な気密性が
得られる範囲で座ぐり穴１０の深さを浅くするのが望ま
しい。例えば図３に示すように座ぐり穴１０の内径を
３．２ｍｍ、深さ（ｄ1 ）を１ｍｍに形成して、図２に
示すランプに比べて座ぐり穴１０の深さを１ｍｍ浅くす
ることにより、セラミックセメント４と放電空間との間
の距離をさらに長くすることができ、セラミックセメン
ト４の温度がさらに低減され、セラミックセメント４と
発光管１内に封入されたナトリウム５との反応をさらに
抑制することができる。Here, the above-described high-pressure sodium lamp shown in FIG. 2 was manufactured, and a lighting cycle in which the lamp was turned on at 150 W for 5 hours and 30 minutes and then turned off for 30 minutes was repeated. No leak occurred, and the leak of sodium was reduced as compared with the conventional high-pressure sodium lamp. By the way, in order to increase the distance between the ceramic cement 4 and the discharge space, the thickness of the end of the arc tube 1 and the hermeticity of the ceramic cement 4 are taken into consideration, as long as sufficient airtightness is obtained. It is desirable to reduce the depth of the counterbore 10. For example, as shown in FIG. 3, the counterbore 10 has an inner diameter of 3.2 mm and a depth (d 1 ) of 1 mm, so that the depth of the counterbore 10 is 1 mm smaller than that of the lamp shown in FIG. Thereby, the distance between the ceramic cement 4 and the discharge space can be further increased, the temperature of the ceramic cement 4 is further reduced, and the reaction between the ceramic cement 4 and the sodium 5 sealed in the arc tube 1 is reduced. It can be further suppressed.
【００２２】（実施形態３）本実施形態の高圧ナトリウ
ムランプの一部省略せる断面図を図４に示す。尚、実施
形態２の高圧ナトリウムランプと同様の構成要素には同
一の符号を付して、その説明を省略する。本実施形態で
は、図２の高圧ナトリウムランプにおいて、座ぐり穴１
０の底に溝１２を形成し、溝１２と開口孔９との間に隔
壁１３を設けている。隔壁１３は例えば内径が２．４ｍ
ｍ、外径が３．４ｍｍ、高さ（ｄ3 ）が１ｍｍに形成さ
れており、導電管２の内径は隔壁１２の内径よりも大き
く、導電管２の外径は座ぐり穴１０の外径よりも小さい
値に形成されている。(Embodiment 3) FIG. 4 is a cross-sectional view of the high-pressure sodium lamp according to this embodiment, in which a part of the lamp can be omitted. Note that the same components as those of the high-pressure sodium lamp of the second embodiment are denoted by the same reference numerals, and description thereof will be omitted. In the present embodiment, in the high-pressure sodium lamp of FIG.
A groove 12 is formed at the bottom of the groove 0, and a partition 13 is provided between the groove 12 and the opening 9. The partition 13 has an inner diameter of 2.4 m, for example.
m, the outer diameter is 3.4 mm, the height (d 3 ) is 1 mm, the inner diameter of the conductive tube 2 is larger than the inner diameter of the partition wall 12, and the outer diameter of the conductive tube 2 is the outer diameter of the counterbore 10. It is formed to a value smaller than the diameter.
【００２３】而して、導電管２を開口部２ａ側から座ぐ
り孔１０内に挿入すると、開口部２ａの端面が溝１２内
に挿入され、開口部２ａの端面が溝１２の底に当接する
と、それ以上導電管２を発光管１内に挿入することがで
きないため、実施形態１の高圧ナトリウムランプのよう
に、導電管２が挿入される深さを規制する規制棒８を別
途設ける必要がなく、ランプの製造工程を簡単にするこ
とができる。さらに、導電管２の開口部２ａの端面は溝
１２内に挿入されるので、導電管２の円周方向のずれが
少なくなる。したがって、発光管１の両端に取り付けら
れる導電管２，２に夫々固定された相対する電極棒３，
３の軸調整が容易に行える。さらに導電管２の開口部２
ａの端面を溝１２内に挿入した後、導電管２をセラミッ
クセメント４で発光管１に封着しているので、隔壁１３
によりセラミックセメント４を放電空間から遮蔽するこ
とができ、セラミックセメント４と発光管１内に封入さ
れたナトリウムとの反応が抑制される。When the conductive tube 2 is inserted into the counterbore 10 from the side of the opening 2a, the end face of the opening 2a is inserted into the groove 12, and the end face of the opening 2a contacts the bottom of the groove 12. When the contact is made, the conductive tube 2 cannot be inserted into the arc tube 1 any more. Therefore, as in the high-pressure sodium lamp according to the first embodiment, a regulating rod 8 for regulating the insertion depth of the conductive tube 2 is separately provided. This eliminates the need and simplifies the lamp manufacturing process. Furthermore, since the end face of the opening 2a of the conductive tube 2 is inserted into the groove 12, the circumferential displacement of the conductive tube 2 is reduced. Therefore, opposing electrode rods 3, which are respectively fixed to the conductive tubes 2, 2 attached to both ends of the arc tube 1,
3 can be easily adjusted. Further, the opening 2 of the conductive tube 2
a is inserted into the groove 12, and the conductive tube 2 is sealed to the arc tube 1 with the ceramic cement 4, so that the partition wall 13
Thereby, the ceramic cement 4 can be shielded from the discharge space, and the reaction between the ceramic cement 4 and sodium sealed in the arc tube 1 is suppressed.
【００２４】ところで、図５に示すように、導電管２の
内側に収まる範囲で隔壁１３の高さを高くしても良く、
隔壁１３の高さを高くすることによって、セラミックセ
メント４を放電空間から完全に遮蔽することができ、セ
ラミックセメント４と発光管１内に封入されたナトリウ
ムとの反応がさらに抑制される。ここに、図４に示す高
圧ナトリウムランプを製作し、１５０Ｗ入力で５時間３
０分点灯し、その後３０分消灯する点灯サイクルで寿命
試験を行ったところ、点灯時間が１２０００時間の時点
でナトリウムのリークが発生したものはなく、ナトリウ
ムのリークを防止することができる。By the way, as shown in FIG. 5, the height of the partition wall 13 may be increased within a range that can be accommodated inside the conductive tube 2.
By increasing the height of the partition 13, the ceramic cement 4 can be completely shielded from the discharge space, and the reaction between the ceramic cement 4 and sodium sealed in the arc tube 1 is further suppressed. Here, the high-pressure sodium lamp shown in FIG.
When a life test was performed in a lighting cycle in which the light was turned on for 0 minutes and then turned off for 30 minutes, no leak of sodium occurred at a lighting time of 12000 hours, and the leak of sodium could be prevented.
【００２５】（実施形態４）本実施形態の高圧ナトリウ
ムランプの断面図を図６に示す。尚、基本的な構成は実
施形態１の高圧ナトリウムランプと同様であるので、同
一の構成要素には同一の符号を付し、その説明を省略す
る。本実施形態では、開口孔９の周囲の発光管１の端面
に、例えば外径が３．４ｍｍ、内径が２．４ｍｍの開口
孔９と同心の略円筒状の突部たる隔壁１３が形成されて
おり、隔壁１３の内径は開口孔９の径と略同じ値に形成
され、隔壁１３の外径は導電管２の内径よりも小さい値
に形成されている。そして、隔壁１３に導電管２の開口
部２ａを挿入した状態で、導電管２をセラミックセメン
ト４により発光管１に封着する。この時、隔壁１３によ
りセラミックセメント４が発光管１の放電空間から完全
に遮蔽され、セラミックセメント４と発光管１内に封入
されたナトリウムとの反応が抑制される。(Embodiment 4) FIG. 6 is a sectional view of a high-pressure sodium lamp according to this embodiment. Since the basic configuration is the same as that of the high-pressure sodium lamp of the first embodiment, the same components are denoted by the same reference numerals, and description thereof will be omitted. In the present embodiment, on the end face of the arc tube 1 around the opening 9, for example, a partition 13 which is a substantially cylindrical projection concentric with the opening 9 having an outer diameter of 3.4 mm and an inner diameter of 2.4 mm is formed. The inner diameter of the partition 13 is formed to be substantially the same as the diameter of the opening 9, and the outer diameter of the partition 13 is formed to be smaller than the inner diameter of the conductive tube 2. Then, with the opening 2 a of the conductive tube 2 inserted into the partition 13, the conductive tube 2 is sealed to the arc tube 1 with ceramic cement 4. At this time, the ceramic cement 4 is completely shielded from the discharge space of the arc tube 1 by the partition walls 13, and the reaction between the ceramic cement 4 and sodium sealed in the arc tube 1 is suppressed.
【００２６】このように、本実施形態の高圧ナトリウム
ランプでは、発光管１の端部に隔壁１３を突設している
だけなので、発光管１に溝を形成する場合に比べて、発
光管１の加工を容易に行うことができる。また、隔壁１
３が導電管２の内面と当接することにより、導電管２の
円周方向の動きが規制されるので、導電管２の円周方向
のずれが少なくなり、導電管２，２にそれぞれ固定され
た相対する電極棒３，３の軸調整が容易に行える。As described above, in the high-pressure sodium lamp according to the present embodiment, since the partition wall 13 is simply provided at the end of the arc tube 1, the arc tube 1 has a smaller diameter than the case where a groove is formed in the arc tube 1. Can be easily processed. Also, partition 1
Since the circumferential movement of the conductive tube 2 is regulated by the contact of the conductive tube 2 with the inner surface of the conductive tube 2, the circumferential displacement of the conductive tube 2 is reduced, and the conductive tube 2 is fixed to the conductive tubes 2, 2. Further, the axial adjustment of the opposing electrode rods 3, 3 can be easily performed.
【００２７】ところで、この高圧ナトリウムランプを製
作し、１５０Ｗ入力で５時間３０分点灯し、その後３０
分消灯する点灯サイクルで寿命試験を行ったところ、点
灯時間が１２０００時間の時点でナトリウムのリークが
発生したものはなく、ナトリウムのリークを防止するこ
とができる。（実施形態５）本実施形態の高圧ナトリウ
ムランプの断面図を図７に示す。尚、基本的な構成は上
述した図４の高圧ナトリウムランプと同様であるので、
同一の構成要素には同一の符号を付し、その説明を省略
する。By the way, this high-pressure sodium lamp was manufactured and turned on for 5 hours and 30 minutes at a 150 W input, and then turned on for 30 hours.
When a life test was performed in a lighting cycle in which the light was turned off for a minute, no leak of sodium occurred at a lighting time of 12000 hours, and the leak of sodium can be prevented. (Embodiment 5) FIG. 7 is a sectional view of a high-pressure sodium lamp according to this embodiment. Since the basic configuration is the same as the high-pressure sodium lamp of FIG. 4 described above,
The same components are denoted by the same reference numerals, and description thereof will be omitted.
【００２８】この高圧ナトリウムランプでは、発光管１
の内方に突出する電極棒３の先端位置を、発光管１の端
部に設けた開口１ａの内側端面７と略面一にしているの
で、電極棒３の先端のみが放電空間に面している。した
がって、放電空間中に晒される電極棒３の部位を小さく
することにより、放電空間中のイオンによって電極棒３
及びコイル３ａの表面から電極材料（例えばタングステ
ン）が放出されるのを減少して、スパッタリングによっ
て放出された電極材料が発光管１の内面に付着して、発
光管１の端部が黒化するのを減少できる。In this high-pressure sodium lamp, the arc tube 1
The tip of the electrode rod 3 projecting inward is substantially flush with the inner end face 7 of the opening 1a provided at the end of the arc tube 1, so that only the tip of the electrode rod 3 faces the discharge space. ing. Therefore, by reducing the portion of the electrode rod 3 exposed to the discharge space, ions in the discharge space
In addition, the emission of the electrode material (for example, tungsten) from the surface of the coil 3a is reduced, and the electrode material emitted by sputtering adheres to the inner surface of the arc tube 1, and the end of the arc tube 1 is blackened. Can be reduced.
【００２９】ここで、図８に示す従来の高圧ナトリウム
ランプを１０本製作し、１５０Ｗ入力で５時間３０分点
灯し、その後３０分消灯する点灯サイクルを繰り返す寿
命試験を行ったところ、点灯時間が１００時間の時点で
の光束維持率を１００％とすると、点灯時間が１２００
０時間の時点での光束維持率は平均で８５％となった。
一方、本実施形態の高圧ナトリウムランプを１０本製作
し、同様の寿命試験を行ったところ、点灯時間が１２０
００時間の時点での光束維持率は平均で９０％となり、
従来の高圧ナトリウムランプに比べて、発光管１の黒化
を防止でき、光束維持率が向上した。Here, ten conventional high-pressure sodium lamps as shown in FIG. 8 were manufactured, and a life test was performed in which a lighting cycle in which the light was turned on for 5 hours and 30 minutes at a 150 W input and then turned off for 30 minutes was performed. Assuming that the luminous flux maintenance factor at 100 hours is 100%, the lighting time is 1200
The luminous flux maintenance factor at the time of 0 hour was 85% on average.
On the other hand, when ten high-pressure sodium lamps of the present embodiment were manufactured and the same life test was performed, the lighting time was 120 hours.
The luminous flux maintenance rate at the time of 00 hours is 90% on average,
Compared with the conventional high-pressure sodium lamp, blackening of the arc tube 1 was prevented, and the luminous flux maintenance ratio was improved.
【００３０】尚、本実施形態では図４の高圧ナトリウム
ランプを例として説明を行ったが、本発明を実施形態１
乃至４の高圧ナトリウムランプに適用した場合でも、同
様の効果を得ることができる。また、上述の各実施形態
では高圧ナトリウムランプを例として説明を行ったが、
本発明をメタルハライドランプに適用した場合でも、同
様の効果を得ることができる。In the present embodiment, the high-pressure sodium lamp shown in FIG. 4 has been described as an example.
The same effect can be obtained even when applied to the high-pressure sodium lamps of Nos. 1 to 4. Further, in each of the above-described embodiments, the description has been given by taking the high-pressure sodium lamp as an example.
Similar effects can be obtained when the present invention is applied to a metal halide lamp.
【００３１】[0031]
【発明の効果】上述のように、請求項１の発明は、両端
に開口孔が形成された発光管と、一端に開口部が形成さ
れるとともに他端に閉塞部が形成され、開口部側に電極
が配設された導電管とを備え、導電管は発光管両端の開
口孔に開口部側から夫々挿入され、開口部の先端面が開
口孔の内側端面よりも外側にある状態で、導電管がセラ
ミックセメントにより開孔孔に封着されているので、導
電管を発光管に封着するセラミックセメントと放電空間
との距離を長くして、発光管に封入された発光物質とセ
ラミックセメントとの反応を抑制することができる。し
たがって、封入物とセラミックセメントとの反応により
発光物質が減少したり、セラミックセメントが劣化し
て、発光物質が漏れるのを防止できるという効果があ
る。As described above, according to the first aspect of the present invention, an arc tube having an opening at both ends, an opening at one end and a closing portion at the other end are formed. A conductive tube in which electrodes are disposed, and the conductive tube is inserted into each of the opening holes at both ends of the arc tube from the opening side, with the tip surface of the opening portion being outside the inner end surface of the opening hole, Since the conductive tube is sealed in the opening hole by ceramic cement, the distance between the ceramic cement for sealing the conductive tube to the arc tube and the discharge space is increased, and the luminescent substance and ceramic cement sealed in the arc tube are increased. Can be suppressed. Therefore, there is an effect that it is possible to prevent the light emitting substance from decreasing due to the reaction between the filling material and the ceramic cement, or to prevent the light emitting substance from leaking due to the deterioration of the ceramic cement.
【００３２】請求項２の発明は、両端に開口孔が形成さ
れた発光管と、一端に開口部が形成されるとともに他端
に閉塞部が形成され、開口部側に電極が配設された導電
管とを備え、開口孔の周囲の発光管の両端面に導電管の
開口部が挿入される凹所を夫々設け、この凹所に導電管
が開口部側から夫々挿入され、開口部の先端面が凹所の
底に当接した状態で、導電管がセラミックセメントによ
り開孔孔に封着されており、開口部の先端面が開口孔の
内側端面よりも外側に位置するので、導電管を発光管に
封着するセラミックセメントと放電空間との距離を長く
して、発光管に封入された発光物質とセラミックセメン
トとの反応を抑制することができる。したがって、封入
物とセラミックセメントとの反応により封入物が減少し
たり、セラミックセメントが劣化して、封入物が漏れる
のを防止できるという効果がある。しかも、開口部の先
端面が凹所の底に当接した状態で導電管が発光管に封着
されるので、導電管を挿入する深さを調整するための規
制棒を別途設ける必要がなく、導電管を挿入する深さの
ばらつきを小さくでき、導電管の位置決めを容易に行え
るという効果がある。According to a second aspect of the present invention, an arc tube having openings at both ends, an opening at one end and a closing portion at the other end, and an electrode disposed on the opening side. A conductive tube, and a concave portion into which the opening of the conductive tube is inserted is provided at both end surfaces of the light emitting tube around the opening hole, and the conductive tubes are inserted into the concave portion from the opening side, respectively. The conductive tube is sealed in the hole with ceramic cement while the tip surface is in contact with the bottom of the recess, and since the tip surface of the opening is located outside the inner end surface of the opening, the conductive tube is By increasing the distance between the ceramic cement for sealing the tube to the arc tube and the discharge space, it is possible to suppress the reaction between the luminescent substance sealed in the arc tube and the ceramic cement. Therefore, there is an effect that it is possible to prevent the enclosure from being reduced due to the reaction between the enclosure and the ceramic cement, and to prevent the enclosure from leaking due to the deterioration of the ceramic cement. In addition, since the conductive tube is sealed to the arc tube in a state where the end surface of the opening is in contact with the bottom of the recess, there is no need to separately provide a regulating rod for adjusting the depth at which the conductive tube is inserted. In addition, the variation in the depth at which the conductive tube is inserted can be reduced, and the conductive tube can be easily positioned.
【００３３】請求項３の発明は、上記凹所が溝からなっ
ており、導電管の開口部の先端が溝内部に嵌まるので、
導電管を発光管に封着するセラミックセメントを放電空
間から遮蔽することにより、発光管に封入された発光物
質とセラミックセメントとの反応をさらに抑制すること
ができるという効果がある。そのうえ、導電管の軸方向
と直交する面内のずれが小さくなり、対向配置された電
極の軸調整を容易に行うことができるという効果もあ
る。According to the third aspect of the present invention, the recess is formed by a groove, and the tip of the opening of the conductive tube fits inside the groove.
By shielding the ceramic cement for sealing the conductive tube to the arc tube from the discharge space, there is an effect that the reaction between the luminescent substance sealed in the arc tube and the ceramic cement can be further suppressed. In addition, there is an effect that the displacement in a plane orthogonal to the axial direction of the conductive tube is reduced, and the axial adjustment of the electrodes arranged opposite to each other can be easily performed.
【００３４】請求項４の発明は、両端に開口孔が形成さ
れた発光管と、一端に開口部が形成されるとともに他端
に閉塞部が形成され、開口部側に電極が配設された導電
管とを備え、開口孔の周囲の発光管の両端面に導電管の
開口部内面と当接する突部を夫々設け、導電管は発光管
両端の突部に開口部側から夫々挿入され、開口部の先端
面が発光管の端面に当接した状態で、導電管がセラミッ
クセメントにより発光管に封着されており、開口部の先
端面が発光管の両端面に位置するので、導電管を発光管
に封着するセラミックセメントと放電空間との距離を長
くすることができ、しかも発光管の端面に形成された突
部が導電管の開口部内面と当接しているので、セラミッ
クセメントを放電空間から遮蔽することにより、発光管
に封入された発光物質とセラミックセメントとの反応を
さらに抑制することができる。したがって、封入物とセ
ラミックセメントとの反応により封入物が減少したり、
セラミックセメントが劣化して、封入物が漏れるのを防
止できるという効果がある。そのうえ、導電管の開口部
内面と突部とが当接することにより、導電管の軸方向と
直交する面内の動きが規制され、この面内での導電管の
ずれが小さくなるので、対向配置された電極の軸調整を
容易に行うことができるという効果もある。According to a fourth aspect of the present invention, there is provided an arc tube having openings at both ends, an opening at one end, a closing portion at the other end, and an electrode disposed on the opening side. A conductive tube is provided, and projections are provided on both end surfaces of the arc tube around the opening hole, the projections being in contact with the inner surfaces of the openings of the arc tube, and the electroconductive tubes are inserted into the projections at both ends of the arc tube from the opening side, respectively. The conductive tube is sealed to the arc tube with ceramic cement in a state where the distal end surface of the opening is in contact with the end surface of the arc tube, and since the distal end surface of the opening is located at both end surfaces of the arc tube, the conductive tube is The distance between the ceramic cement that seals the arc tube to the discharge tube and the discharge space can be lengthened, and the protrusion formed on the end face of the arc tube contacts the inner surface of the opening of the conductive tube. By shielding from the discharge space, light emission sealed in the arc tube It is possible to further suppress the reaction between the quality and the ceramic cement. Therefore, the inclusions decrease due to the reaction between the inclusions and the ceramic cement,
There is an effect that it is possible to prevent the deterioration of the ceramic cement and leakage of the inclusion. In addition, the contact between the inner surface of the opening of the conductive tube and the projection restricts the movement in a plane perpendicular to the axial direction of the conductive tube, and the displacement of the conductive tube in this plane is reduced. There is also an effect that the axis adjustment of the electrode can be easily performed.
【００３５】請求項５の発明は、上記電極の先端が、発
光管両端の開口孔の内側端面と略面一に配置されている
ので、放電空間に晒される電極の部位を小さくすること
ができ、放電空間中のイオンによって電極材料が放出さ
れるのを抑制して、発光管の黒化を防止できるという効
果もある。According to the fifth aspect of the present invention, since the tip of the electrode is disposed substantially flush with the inner end face of the opening at both ends of the arc tube, the portion of the electrode exposed to the discharge space can be reduced. Further, there is also an effect that the emission of the electrode material by ions in the discharge space is suppressed, and blackening of the arc tube can be prevented.
【図１】実施形態１の金属蒸気放電灯を示す断面図であ
る。FIG. 1 is a sectional view showing a metal vapor discharge lamp according to a first embodiment.
【図２】実施形態２の金属蒸気放電灯を示す一部省略せ
る断面図である。FIG. 2 is a partially omitted sectional view showing a metal vapor discharge lamp according to a second embodiment.
【図３】同上の別の金属蒸気放電灯を示す一部省略せる
断面図である。FIG. 3 is a partially omitted sectional view showing another metal vapor discharge lamp of the above.
【図４】実施形態３の金属蒸気放電灯を示す一部省略せ
る断面図である。FIG. 4 is a partially omitted sectional view showing a metal vapor discharge lamp according to a third embodiment.
【図５】同上の別の金属蒸気放電灯を示す一部省略せる
断面図である。FIG. 5 is a partially omitted sectional view showing another metal vapor discharge lamp of the above.
【図６】実施形態４の金属蒸気放電灯を示す一部省略せ
る断面図である。FIG. 6 is a partially omitted sectional view showing a metal vapor discharge lamp according to a fourth embodiment.
【図７】実施形態５の金属蒸気放電灯を示す一部省略せ
る断面図である。FIG. 7 is a partially omitted sectional view showing a metal vapor discharge lamp according to a fifth embodiment.
【図８】従来の金属蒸気放電灯を示す断面図である。FIG. 8 is a sectional view showing a conventional metal vapor discharge lamp.
１ 発光管 ２ 導電管 ２ａ 開口部 ２ｂ 閉塞部 ２ｃ 孔 ３ 電極棒 ３ａ コイル ４ セラミックセメント ７ 内側端面 ９ 開口孔 １５ ろう材 Reference Signs List 1 arc tube 2 conductive tube 2a opening 2b closing portion 2c hole 3 electrode rod 3a coil 4 ceramic cement 7 inner end face 9 opening hole 15 brazing filler metal
───────────────────────────────────────────────────── フロントページの続き (72)発明者 住友 卓 大阪府門真市大字門真1048番地松下電工株 式会社内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Taku Sumitomo 1048 Odakadoma, Kadoma City, Osaka Prefecture
Claims (5)
に開口部が形成されるとともに他端に閉塞部が形成さ
れ、開口部側に電極が配設された導電管とを備え、導電
管は発光管両端の開口孔に開口部側から夫々挿入され、
開口部の先端面が開口孔の内側端面よりも外側にある状
態で、導電管がセラミックセメントにより開孔孔に封着
されることを特徴とする金属蒸気放電灯。An arc tube having an opening at both ends and a conductive tube having an opening at one end and a closing portion at the other end, and having an electrode disposed on the opening side. The conductive tubes are inserted into the opening holes at both ends of the arc tube from the opening side, respectively.
A metal vapor discharge lamp, wherein a conductive tube is sealed in a hole with ceramic cement in a state in which a tip surface of the opening is outside an inner end surface of the hole.
に開口部が形成されるとともに他端に閉塞部が形成さ
れ、開口部側に電極が配設された導電管とを備え、開口
孔の周囲の発光管の両端面に導電管の開口部が挿入され
る凹所を夫々設け、この凹所に導電管が開口部側から夫
々挿入され、開口部の先端面が凹所の底に当接した状態
で、導電管がセラミックセメントにより開孔孔に封着さ
れることを特徴とする金属蒸気放電灯。2. A light emitting tube having an opening formed at both ends and a conductive tube having an opening formed at one end and a closed part formed at the other end, and having an electrode disposed at the opening. In each of the end surfaces of the arc tube around the opening hole, a recess is provided in which the opening of the conductive tube is inserted, and the conductive tube is inserted into the recess from the opening side, and the tip end surface of the opening is recessed. A metal vapor discharge lamp characterized in that a conductive tube is sealed in an opening by ceramic cement in a state of contacting the bottom of the metal vapor discharge lamp.
項２記載の金属蒸気放電灯。3. The metal vapor discharge lamp according to claim 2, wherein said recess is a groove.
に開口部が形成されるとともに他端に閉塞部が形成さ
れ、開口部側に電極が配設された導電管とを備え、開口
孔の周囲の発光管の両端面に導電管の開口部内面と当接
する突部を夫々設け、導電管は発光管両端の突部に開口
部側から夫々挿入され、開口部の先端面が発光管の端面
に当接した状態で、導電管がセラミックセメントにより
発光管に封着されることを特徴とする金属蒸気放電灯。4. An arc tube having an opening formed at both ends thereof, and a conductive tube having an opening formed at one end and a closed portion formed at the other end, and having an electrode disposed on the opening side. A projection is provided on each end surface of the arc tube around the opening hole, the projection being in contact with the inner surface of the opening of the conductive tube. The conductive tubes are inserted into the projections at both ends of the arc tube from the opening side, respectively, and the tip surface of the opening is provided. A metal vapor discharge lamp characterized in that a conductive tube is sealed to the arc tube with ceramic cement in a state in which the abutment is in contact with an end face of the arc tube.
内側端面と略面一に配置されたことを特徴とする請求項
１乃至４記載の金属蒸気放電灯。5. The metal vapor discharge lamp according to claim 1, wherein a tip of said electrode is arranged substantially flush with an inner end face of an opening of an arc tube end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31402897A JPH11149902A (en) | 1997-11-14 | 1997-11-14 | Metallic vapor discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31402897A JPH11149902A (en) | 1997-11-14 | 1997-11-14 | Metallic vapor discharge lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11149902A true JPH11149902A (en) | 1999-06-02 |
Family
ID=18048351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31402897A Withdrawn JPH11149902A (en) | 1997-11-14 | 1997-11-14 | Metallic vapor discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11149902A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002049074A1 (en) * | 2000-12-14 | 2002-06-20 | Koninklijke Philips Electronics N.V. | High pressure discharge lamp |
| JP2002245971A (en) * | 2000-12-12 | 2002-08-30 | Toshiba Lighting & Technology Corp | High pressure discharge lamp, high pressure discharge lamp lighting device and lighting device |
| WO2003032363A1 (en) * | 2001-10-02 | 2003-04-17 | Ngk Insulators, Ltd. | High-voltage discharge lamp, head lamp for automobile and arc tube for the high-voltage discharge lamp |
| US6791267B2 (en) | 2001-10-02 | 2004-09-14 | Ngk Insulators, Ltd. | High pressure discharge lamps, lighting systems, head lamps for automobiles and light emitting vessels for high pressure discharge lamps |
| US7288303B2 (en) | 2004-06-08 | 2007-10-30 | Ngk Insulators, Ltd. | Structures of brittle materials and metals |
| JPWO2005122214A1 (en) * | 2004-06-08 | 2008-04-10 | 日本碍子株式会社 | Luminescent container and luminous container for high pressure discharge lamp |
| US7521870B2 (en) | 2004-06-08 | 2009-04-21 | Ngk Insulators, Ltd. | Luminous containers and those for high pressure discharge lamps |
| JP2011034779A (en) * | 2009-07-31 | 2011-02-17 | Ushio Inc | Rare gas-halogen excimer lamp |
-
1997
- 1997-11-14 JP JP31402897A patent/JPH11149902A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002245971A (en) * | 2000-12-12 | 2002-08-30 | Toshiba Lighting & Technology Corp | High pressure discharge lamp, high pressure discharge lamp lighting device and lighting device |
| EP1220295A3 (en) * | 2000-12-12 | 2003-12-03 | Toshiba Lighting & Technology Corporation | High pressure discharge lamp, high pressure discharge lamp lighting apparatus and luminaire therefor |
| WO2002049074A1 (en) * | 2000-12-14 | 2002-06-20 | Koninklijke Philips Electronics N.V. | High pressure discharge lamp |
| WO2003032363A1 (en) * | 2001-10-02 | 2003-04-17 | Ngk Insulators, Ltd. | High-voltage discharge lamp, head lamp for automobile and arc tube for the high-voltage discharge lamp |
| US6791267B2 (en) | 2001-10-02 | 2004-09-14 | Ngk Insulators, Ltd. | High pressure discharge lamps, lighting systems, head lamps for automobiles and light emitting vessels for high pressure discharge lamps |
| US7288303B2 (en) | 2004-06-08 | 2007-10-30 | Ngk Insulators, Ltd. | Structures of brittle materials and metals |
| JPWO2005122214A1 (en) * | 2004-06-08 | 2008-04-10 | 日本碍子株式会社 | Luminescent container and luminous container for high pressure discharge lamp |
| US7521870B2 (en) | 2004-06-08 | 2009-04-21 | Ngk Insulators, Ltd. | Luminous containers and those for high pressure discharge lamps |
| JP2011034779A (en) * | 2009-07-31 | 2011-02-17 | Ushio Inc | Rare gas-halogen excimer lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20050201 |