JPH0437870Y2 - - Google Patents
Info
- Publication number
- JPH0437870Y2 JPH0437870Y2 JP17200386U JP17200386U JPH0437870Y2 JP H0437870 Y2 JPH0437870 Y2 JP H0437870Y2 JP 17200386 U JP17200386 U JP 17200386U JP 17200386 U JP17200386 U JP 17200386U JP H0437870 Y2 JPH0437870 Y2 JP H0437870Y2
- Authority
- JP
- Japan
- Prior art keywords
- glass solder
- molded body
- arc tube
- shaped
- solder molded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229910000679 solder Inorganic materials 0.000 claims description 46
- 239000000919 ceramic Substances 0.000 description 21
- 238000000034 method Methods 0.000 description 8
- 238000007789 sealing Methods 0.000 description 8
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 229910044991 metal oxide Inorganic materials 0.000 description 6
- 150000004706 metal oxides Chemical class 0.000 description 6
- 229910052758 niobium Inorganic materials 0.000 description 6
- 239000010955 niobium Substances 0.000 description 6
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- 239000000292 calcium oxide Substances 0.000 description 3
- 235000012255 calcium oxide Nutrition 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000010979 ruby Substances 0.000 description 1
- 229910001750 ruby Inorganic materials 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Ceramic Products (AREA)
Description
【考案の詳細な説明】
〔考案の目的〕
（産業上の利用分野）
本考案はセラミツク放電灯の発光管バルブの開
口端部を閉塞体で気密封止する際に好適するガラ
スソルダ成形体の形状に関する。[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention is a glass solder molded body suitable for hermetically sealing the open end of the arc tube bulb of a ceramic discharge lamp with a closing body. Concerning shape.
（従来の技術）
透光性セラミツクスたとえばアルミナのような
高密度多結晶体あるいはルビー、サフアイアのよ
うな金属酸化物単結晶からなるセラミツクスを発
光管バルブとして使用するセラミツク放電灯は発
光効率のきわめて優れたランプとして知られてい
る。このようなセラミツク放電灯の発光管バルブ
は、セラミツクスが極めて高融点な物質であるた
め、石英ガラス製発光管バルブの場合のようにそ
の管端部を加熱軟化して圧潰封止をすることがで
きず、したがつて、セラミツクスと熱膨張率が近
似するニオブ、タンタル等の高融点金属またはセ
ラミツクスからなる板状、キヤツプ状の閉塞体を
用い、ガラスソルダのような封着材を介して封止
する方法が一般に用いられる。(Prior art) Ceramic discharge lamps that use translucent ceramics, such as ceramics made of high-density polycrystals such as alumina or metal oxide single crystals such as ruby or sapphire, as arc tube bulbs have extremely high luminous efficiency. It is also known as a lamp. In the arc tube bulb of such a ceramic discharge lamp, since the ceramic is a material with an extremely high melting point, the tube end cannot be sealed by heating and softening by heating, as in the case of a quartz glass arc tube bulb. Therefore, a plate-shaped or cap-shaped closure body made of a high-melting point metal such as niobium or tantalum or ceramics, which has a coefficient of thermal expansion similar to that of ceramics, is used and sealed with a sealing material such as glass solder. A method of stopping is generally used.
また、上記ガラスソルダとしてはアルミナ、カ
ルシア、マグネシア等を主成分とするものが良く
知られ、さらに取扱い上の便利さからその材料の
各金属酸化物粉末あるいは一旦ガラス化した物を
粉砕した粉末をリング状に圧縮して一体成形した
形で使用されるのが普通である。すなわち、第７
図に示すように、透光性セラミツクスたとえばア
ルミナセラミツクスからなる発光管バルブ４の開
口した端部４ａに、この端部４ａとほぼ同一形状
のリング状に圧縮して一体成形されたガラスソル
ダ成形体１Ａを載置し、さらにその上部にニオブ
からなるキヤツプ状の閉塞体５を載置する。この
閉塞体５のほぼ中央部にはたとえばニオブからな
る金属管７が気密に貫通し、その内端部には電極
８が支持されている。６は上記閉塞体３に加重を
かけるための錘で、発光管バルブ端部４ａにガラ
スソルダ成形体１Ａを押圧する。このように配置
した発光管組立体の上記リング状ガラスソルダ成
形体１Ａを、その溶融温度に達するまで加熱すれ
ば溶融し、加熱を止めれば冷却固化し、第８図に
示すように発光管バルブ端部４ａはガラスソルダ
１Aaを介して閉塞体５により気密に封着される。 In addition, as the glass solder mentioned above, those whose main components are alumina, calcia, magnesia, etc. are well known, and for convenience in handling, metal oxide powders of the materials or powders obtained by pulverizing the material once vitrified are used. It is usually used in the form of a compressed ring-shaped integral mold. That is, the seventh
As shown in the figure, a glass solder molded body is compressed and integrally formed into a ring shape having approximately the same shape as the end 4a of an open end 4a of an arc tube bulb 4 made of translucent ceramics, such as alumina ceramics. 1A is placed, and a cap-shaped closing body 5 made of niobium is placed on top of it. A metal tube 7 made of, for example, niobium passes airtightly through approximately the center of the closure body 5, and an electrode 8 is supported at its inner end. Reference numeral 6 denotes a weight for applying a load to the closing body 3, which presses the glass solder molded body 1A against the arc tube bulb end 4a. If the ring-shaped glass solder molded body 1A of the arc tube assembly arranged in this way is heated until it reaches its melting temperature, it will melt, and if the heating is stopped, it will cool and solidify, and as shown in FIG. The end portion 4a is hermetically sealed with a closure body 5 via a glass solder 1Aa.
しかしながら、上記ガラスソルダ成形体１Ａは
加熱されるとリングの中心方向に向つて収縮変形
を生じる。しかも、上記発光管組立体の各部材の
加工精度の影響で、ガラスソルダ成形体１Ａは閉
塞体５および発光管端部４ａとでその全表面が均
一な力で押圧することができないため、軟化した
リング状のガラスソルダ成形体１Ａは第９図に示
すように元の真円形状からたとえば点線で示す形
に変形しその一部は封着予定部からはみ出し、溶
融すると発光管バルブ４の内面に流れ出て第８図
に示すようにガラスソルダの肉溜り１Aa1を生
じ、これがクラツクの原因となつたり、あるいは
封着部９にソルダ不足による空洞１０を生じて気
密性が損なわれる等の欠点を生じることがあつ
た。 However, when the glass solder molded body 1A is heated, it shrinks and deforms toward the center of the ring. Moreover, due to the processing precision of each member of the arc tube assembly, the entire surface of the glass solder molded body 1A cannot be pressed with a uniform force by the closure body 5 and the arc tube end 4a, so that the glass solder molded body 1A cannot be pressed with a uniform force. As shown in FIG. 9, the ring-shaped glass solder molded body 1A deforms from its original perfect circular shape to, for example, the shape shown by the dotted line, and a part of it protrudes from the area to be sealed, and when melted, the inner surface of the arc tube bulb 4. As shown in FIG. 8, the glass solder flows out and forms a pool of glass solder 1Aa1 , which causes a crack, or a void 10 is formed in the sealing part 9 due to insufficient solder, which impairs airtightness. Occasionally, this may occur.
（考案が解決しようとする問題点）
上記のようにセラミツク放電灯の発光管バルブ
の開口端部を閉塞体で気密封止する際に一体成形
されたリング状のガラスソルダ成形体を使用する
と、発光管バルブの内面に余分なガラスソルダの
肉溜りを生じてクラツクを発生させたり、あるい
は封着部に空洞を生じて気密性が損なわれ、ラン
プ寿命が短かくなるという欠点があつた。(Problems to be solved by the invention) When an integrally molded ring-shaped glass solder molded body is used to hermetically seal the open end of the arc tube bulb of a ceramic discharge lamp with a closure body as described above, The disadvantages are that excess glass solder builds up on the inner surface of the arc tube bulb, causing cracks, or that cavities are formed in the sealing area, impairing airtightness and shortening the life of the lamp.
そこで本考案は発光管バルブにガラスソルダに
起因するクラツクが発生せず、しかも封着部に空
洞も生じることがない長寿命のクラツク放電灯の
製造に好適するガラスソルダ成形体を提供するこ
とを目的とする。 Therefore, the object of the present invention is to provide a glass solder molded body that is suitable for manufacturing a long-life crack discharge lamp that does not cause cracks caused by glass solder in the arc tube bulb and also does not create cavities in the sealed portion. purpose.
（問題点を解決するための手段）
本考案のガラスソルダ成形体は、複数の円弧状
分割片の各端部を衝合してリング状に組立てら
れ、かつ、上記各分割片の衝合面が非平滑面とす
ることにより構成される。
(Means for Solving the Problems) The glass solder molded body of the present invention is assembled into a ring shape by abutting each end of a plurality of arc-shaped divided pieces, and the abutting surfaces of each of the divided pieces are assembled into a ring shape. It is constructed by making the surface non-smooth.
（作用）
このような構成であれば、封着工程時における
ガラスソルダ成形体の軟化による変形は各分割片
毎に生じ、隣接する分割片同士が互に変形の影響
を与えることが無いので、リング状成形体全体と
しては上記第９図に示したような大きな変形を生
じ、その一部が封着予定部からはみ出して溶融
し、発光管バルブの内面にガラスソルダの肉溜り
を生じることは無いし、また封着予定部のガラス
ソルダ不足による空洞の発生も防止できる。(Function) With this configuration, deformation due to softening of the glass solder molded body during the sealing process occurs in each divided piece, and adjacent divided pieces do not affect each other's deformation. The ring-shaped molded body as a whole undergoes large deformation as shown in Fig. 9 above, and a portion of it protrudes from the area to be sealed and melts, creating a pool of glass solder on the inner surface of the arc tube bulb. There is no such problem, and the formation of cavities due to insufficient glass solder in the area to be sealed can also be prevented.
（実施例）
以下、本考案のガラスソルダ成形体の一実施例
およびこのガラスソルダ成形体を用いたセラミツ
ク放電灯の製造方法を図面を参照して説明する。(Example) Hereinafter, an example of the glass solder molded article of the present invention and a method for manufacturing a ceramic discharge lamp using this glass solder molded article will be described with reference to the drawings.
第１図は本考案のガラス成形体の一実施例の斜
視図、第２図は同実施例の要部拡大図を示す。 FIG. 1 is a perspective view of an embodiment of the glass molded article of the present invention, and FIG. 2 is an enlarged view of essential parts of the same embodiment.
１はリング状をなすガラスソルダ成形体で、た
とえばアルミナＡ2O3、カルシアCaO、マグネ
シアMgO等を主成分とする金属酸化物混合体を
圧縮して形成される。上記ガラス成形体１は、複
数たとえば４個の円弧状分割片２，２，２，２の
各端部を衝合してリング状に形成され、かつ、各
分割片２，２……の衝合面３，３……は第２図に
示すように非平滑面たとえば凹凸面に形成するこ
とによつて、各分割片２，２……が互に緊密に連
結し、リング形状を保持できるように構成されて
いる。 Reference numeral 1 denotes a ring-shaped glass solder molded body, which is formed by compressing a metal oxide mixture whose main components are, for example, alumina A 2 O 3 , calcia CaO, magnesia MgO, or the like. The glass molded body 1 is formed into a ring shape by abutting each end of a plurality of, for example, four arcuate segmented pieces 2, 2, 2, 2, and the abutment between each segmented piece 2, 2... By forming the mating surfaces 3, 3, . It is configured as follows.
次に本考案のガラスソルダ成形体を用いたセラ
ミツク放電灯の製造方法を第５図および第６図を
参照して説明する。 Next, a method of manufacturing a ceramic discharge lamp using the glass solder molded body of the present invention will be explained with reference to FIGS. 5 and 6.
第５図はセラミツク放電灯たとえば高圧ナトリ
ウムランプの封着工程前の発光管の一端側縦断面
図を示し、４は透光性セラミツクたとえばアルミ
ナセラミツクからなる発光管バルブで、その開口
端部４ａ上に上記円弧状の分割片２，２……を組
立ててリング状に形成したガラスソルダ成形体１
が載置される。５はたとえばニオブ金属からなる
キヤツプ状の閉塞体で、発光管バルブ端面４ａと
でガラスソルダ成形体１を挾持するようにガラス
ソルダ成形体１上に載置される。さらに、閉塞体
５上に加重をかけるための錘６を乗せれば、ガラ
スソルダ成形体１は発光管バルブ端面４ａに強く
押圧される。なお、７はニオブからなる金属管
で、その内端部には電極８が支持されている。 FIG. 5 shows a longitudinal cross-sectional view of one end of the arc tube of a ceramic discharge lamp, such as a high-pressure sodium lamp, before the sealing process. 4 is an arc tube bulb made of translucent ceramic, such as alumina ceramic, and the upper part of the open end 4a of the arc tube bulb is shown in FIG. A glass solder molded body 1 formed into a ring shape by assembling the arc-shaped divided pieces 2, 2...
is placed. Reference numeral 5 denotes a cap-shaped closing body made of, for example, niobium metal, and is placed on the glass solder molded body 1 so as to sandwich the glass solder molded body 1 between the arc tube bulb end face 4a. Further, when a weight 6 for applying a load is placed on the closing body 5, the glass solder molded body 1 is strongly pressed against the arc tube bulb end face 4a. Note that 7 is a metal tube made of niobium, and an electrode 8 is supported at the inner end thereof.
このように配置した発光管組立体を、真空また
は不活性ガス雰囲気中において上記ガラスソルダ
成形体１が溶融する温度になるまで、たとえば高
周波加熱などの適当手段で加熱すれば、金属酸化
物混合体からなるガラスソルダ成形体１は溶融し
てガラス化し、加熱を止めれば冷却固化したガラ
スソルダ１ａを介して第６図に示すように発光管
バルブ端面４ａは閉塞体５によつて気密に封着さ
れる。 If the arc tube assembly arranged in this way is heated in a vacuum or an inert gas atmosphere to a temperature at which the glass solder molded body 1 melts by an appropriate means such as high frequency heating, a metal oxide mixture is formed. The glass solder molded body 1 is melted and vitrified, and when the heating is stopped, the end face 4a of the arc tube bulb is hermetically sealed by the closing body 5 through the cooled and solidified glass solder 1a, as shown in FIG. be done.
このような加熱封着工程において、当初昇温し
たリング状のガラスソルダ成形体１は材料粉末の
圧縮成形体であるから、軟化して変形を生じる
が、複数の分割片２からなるため、隣接する分割
片２，２同士が互に変形の影響を与えることな
く、変形は各分割片２，２……毎に生じるので、
リング状ガラスソルダ全体としての大きな変形は
抑制され、封着予定部からはみ出すようなことは
無い。 In such a heat sealing process, the ring-shaped glass solder molded body 1 whose temperature is initially raised is a compression molded body of material powder, so it softens and deforms, but since it is composed of a plurality of divided pieces 2, it The deformation occurs in each divided piece 2, 2... without affecting each other's deformation, so
Large deformation of the ring-shaped glass solder as a whole is suppressed, and it does not protrude from the area to be sealed.
したがつて、第６図に示すように封着部９から
変形してはみ出し、溶融したガラスソルダ１ａに
よる発光管バルブ内面の肉溜りの発生や、封着部
９のガラスソルダ１ａ不足による空洞の発生等の
ないランプを得ることができる。 Therefore, as shown in FIG. 6, the glass solder 1a deforms and protrudes from the sealing part 9, causing a buildup on the inner surface of the arc tube bulb due to the melted glass solder 1a, and the formation of a cavity due to insufficient glass solder 1a in the sealing part 9. A lamp without generation etc. can be obtained.
さらに、リング状のガラスソルダ成形体１を形
成する各分割片２，２……の各端部衝合面３，３
……は平滑面ではなく、凹凸面を形成することに
よつて緊密に衝合されているから、上記第３図に
示したように発光管バルブ端面４ａ上に載置する
際に、分割片２，２……の組合せが外れてバラバ
ラに分離するような不都合を生じることもなく、
その取扱いが極めて容易となる利点もある。 Furthermore, each end abutment surface 3, 3 of each divided piece 2, 2, which forms the ring-shaped glass solder molded body 1
. . . are not smooth surfaces but are closely abutted by forming uneven surfaces, so when placing the divided pieces on the bulb end face 4a of the arc tube as shown in FIG. There will be no inconvenience such as the combination of 2, 2... coming off and separating into pieces.
It also has the advantage of being extremely easy to handle.
なお、各分割片２，２……の端部衝合面３，３
……の形状は、要は互の組合せが緊密で、外れな
いように非平滑面とすれば良いのであつて、上記
実施例に限らずたとえば第３図および第４図に示
すように各種の変形例をとることができる。 In addition, the end abutting surfaces 3, 3 of each divided piece 2, 2...
The shape of . Variations can be taken.
また、閉塞体５も上記ニオブ等の金属製に限ら
ず、セラミツクや導電性セラミツク製等の他の材
料からなるものにも適用することができるし、さ
らにガラスソルダ成形体材料についても上記実施
例以外の各種金属酸化物の混合体は勿論のこと、
これ等金属酸化物を一旦溶融してガラス化したも
のを粉砕して粉末化したものであつても良い。 Further, the closing body 5 is not limited to metal such as the above-mentioned niobium, but can also be applied to other materials such as ceramic or conductive ceramic.Furthermore, the material of the glass solder molded body can also be applied to the above-mentioned examples. Of course, mixtures of various metal oxides other than
These metal oxides may be once melted and vitrified, and then crushed into powder.
以上述べたように本考案の構成によれば、セラ
ミツク放電灯に使用した場合、ガラスソルダの封
着予定部以外への流出を防止して、封着予定部へ
充分な量を供給できるので、気密性に優れた封着
部が得られると共に、発光管バルブのクラツク発
生をも防止して長寿命のセラミツク放電灯を得る
ことができる。
As described above, according to the configuration of the present invention, when used in a ceramic discharge lamp, it is possible to prevent glass solder from flowing out to areas other than the area to be sealed, and to supply a sufficient amount to the area to be sealed. Not only can a sealed portion with excellent airtightness be obtained, but also cracks in the arc tube bulb can be prevented, and a long-life ceramic discharge lamp can be obtained.
第１図および第２図は本考案のガラスソルダ成
形体の一実施例を示し、第１図は斜視図、第２図
は要部拡大図、第３図と第４図はそれぞれ異なる
他の実施例の要部拡大図、第５図および第６図は
本考案のガラスソルダ成形体を使用したセラミツ
ク放電灯の製造方法の説明図、第７図〜第９図は
従来のガラスソルダ成形体を使用したセラミツク
放電灯の製造方法の説明図である。
１……ガラスソルダ成形体、２……分割片、３
……衝合面。
1 and 2 show one embodiment of the glass solder molded product of the present invention, FIG. 1 is a perspective view, FIG. 2 is an enlarged view of the main part, and FIGS. An enlarged view of the main parts of the embodiment, FIGS. 5 and 6 are explanatory diagrams of a method for manufacturing a ceramic discharge lamp using the glass solder molded body of the present invention, and FIGS. 7 to 9 are views of conventional glass solder molded bodies. FIG. 2 is an explanatory diagram of a method for manufacturing a ceramic discharge lamp using the method. 1...Glass solder molded body, 2...Divided piece, 3
...Collision surface.
Claims (1)
状に組立てられ、かつ、上記各分割片の衝合面が
非平滑面に形成されていることを特徴とするガラ
スソルダ成形体。 A glass solder molded body, characterized in that the ends of a plurality of arc-shaped divided pieces are assembled into a ring shape by abutting each other, and the abutting surfaces of each of the divided pieces are formed into non-smooth surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17200386U JPH0437870Y2 (en) | 1986-11-11 | 1986-11-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17200386U JPH0437870Y2 (en) | 1986-11-11 | 1986-11-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6378042U JPS6378042U (en) | 1988-05-24 |
| JPH0437870Y2 true JPH0437870Y2 (en) | 1992-09-04 |
Family
ID=31108153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17200386U Expired JPH0437870Y2 (en) | 1986-11-11 | 1986-11-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0437870Y2 (en) |
-
1986
- 1986-11-11 JP JP17200386U patent/JPH0437870Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6378042U (en) | 1988-05-24 |
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