JPH0467733B2 - - Google Patents
Info
- Publication number
- JPH0467733B2 JPH0467733B2 JP21651983A JP21651983A JPH0467733B2 JP H0467733 B2 JPH0467733 B2 JP H0467733B2 JP 21651983 A JP21651983 A JP 21651983A JP 21651983 A JP21651983 A JP 21651983A JP H0467733 B2 JPH0467733 B2 JP H0467733B2
- Authority
- JP
- Japan
- Prior art keywords
- arc tube
- heating element
- conductor
- frit ring
- ring
- 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
- 238000010438 heat treatment Methods 0.000 claims description 33
- 239000004020 conductor Substances 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 239000013078 crystal Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 230000006698 induction Effects 0.000 description 6
- 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 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
- H01J9/32—Sealing leading-in conductors
- H01J9/323—Sealing leading-in conductors into a discharge lamp or a gas-filled discharge device
Description
【発明の詳細な説明】
産業上の利用分野
本発明は放電ランプ発光管の製造方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for manufacturing a discharge lamp arc tube.
従来例の構成とその問題点
単結晶または多結晶アルミナからなる発光管容
囲器は、高圧ナトリウムランプ等の放電ランプの
発光管に用いられている。Conventional Structure and Problems Arc tube envelopes made of single crystal or polycrystalline alumina are used in arc tubes of discharge lamps such as high-pressure sodium lamps.
ところで、単結晶または多結晶アルミナは軟化
点が2015℃であつて融点とほぼ同じであるため、
石英ガラスと異なり、軟化点まで加熱しピンチす
るという方法を採用することができないことはよ
く知られている。このため、従来は円筒状の発熱
体内に、発光管容囲器、フリツトリングおよび導
電体を有する組立構体を一つまたは複数配置し、
外部から発熱体を誘導加熱することにより、発熱
体を昇温させ、フリツトリングを溶融させて、発
光管容囲器の端部に導電体を封着するという方法
を採用している。しかしながら、この方法は組立
構体が一つの場合には発熱体からの輻射熱がほぼ
均一になるため問題はないが、低ワツト（400W
以下）等の放電ランプの場合にはコスト低減の面
から発熱体内に複数の組立構体を配置することが
多く、この場合には次のような問題が生じる。す
なわち、第１図に発熱体１の平面図を示すよう
に、円筒状の発熱体１内に発光管容囲器２、フリ
ツトリング３および導電体４が配置されて、前記
の封着が行われるが、発熱体１に近いフリツトリ
ング３の部分が早期に溶融し、発熱体１から遠い
フリツトリング３の部分は溶融し難く、したがつ
てフリツトリング３の溶融が不均一となり、複数
本の受光管容囲器２の端部に導電体４を気密に同
時封着することができないことがあつた。 By the way, the softening point of single crystal or polycrystalline alumina is 2015℃, which is almost the same as the melting point.
It is well known that unlike quartz glass, it is not possible to heat it to its softening point and pinch it. For this reason, conventionally, one or more assembled structures having an arc tube envelope, a frit ring, and a conductor are arranged inside a cylindrical heating element.
A method is adopted in which the temperature of the heating element is raised by induction heating from the outside, the frit ring is melted, and the conductor is sealed to the end of the arc tube envelope. However, when there is only one assembled structure, this method poses no problem because the radiant heat from the heating element is almost uniform;
In the case of discharge lamps such as those described below, a plurality of assembly structures are often arranged within the heating element in order to reduce costs, and in this case, the following problems arise. That is, as shown in a plan view of the heating element 1 in FIG. 1, the arc tube envelope 2, the frit ring 3, and the conductor 4 are arranged inside the cylindrical heating element 1, and the above-mentioned sealing is performed. However, the part of the frittle ring 3 that is close to the heating element 1 melts early, and the part of the frittle ring 3 that is far from the heating element 1 is difficult to melt. In some cases, it was not possible to simultaneously seal the conductor 4 to the end of the container 2 in an airtight manner.
発明の目的
本発明は複数本の発光管容囲器の端部にフリツ
トリングを用いて導電体を同時封着する場合に、
複数個のフリツトリングを同時に均一に溶融する
ことができ、よつてこれらの発光管容囲器の端部
に導電体を気密に同時封着することができる放電
ランプ発光管の製造方法を提供するものである。Purpose of the Invention The present invention provides a method for simultaneously sealing a conductor at the end of a plurality of arc tube enclosures using a frit ring.
To provide a method for manufacturing a discharge lamp arc tube, in which a plurality of frit rings can be uniformly melted at the same time, and a conductor can be hermetically sealed at the end of the arc tube envelope at the same time. It is.
発明の構成
本発明は単結晶または多結晶アルミナからなる
発光管容囲器の端部に、先端に電極を有する導電
体をフリツトリングを用いて封着する放電ランプ
発光管の製造方法であつて、発熱体にその中心か
らの距離が等しく、かつ周方向の相互間隔が等し
く位置するよう複数個の孔を形成し、それらの孔
内に前記発光管容囲器、前記フリツトリングおよ
び前記導電体を有する組立構体を一つずつ配置
し、外部から前記発熱体を誘導加熱することによ
り前記フリツトリングを溶融して前記発光管容囲
器の端部に前記導電体を封着する放電ランプ発光
管の製造方法を特徴とするものである。Composition of the Invention The present invention is a method for manufacturing a discharge lamp arc tube, in which a conductor having an electrode at the tip is sealed to the end of an arc tube envelope made of single crystal or polycrystalline alumina using a frit ring. A plurality of holes are formed in the heating element so as to be located at equal distances from the center and at equal mutual intervals in the circumferential direction, and the arc tube envelope, the frit ring, and the conductor are located in the holes. A method for manufacturing a discharge lamp arc tube, in which assembled structures are arranged one by one, and the frit ring is melted by induction heating the heating element from the outside to seal the conductor to the end of the arc tube enclosure. It is characterized by:
実施例の説明
以下、本発明の一実施例について図面を用いて
説明する。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
第３図および第４図は本発明の放電ランプ発光
管の製造方法を実施するために用いる発熱体の一
例を示す平面図および縦断面図である。発熱体５
は外形が円であつて、これにはその中心Ｏからの
距離が等しく、かつ周方向の相互間隔Ａが等しく
位置するよう、直径の大きさが同じである複数個
の円形の孔６が形成されている。つまり、発熱体
５の中心Ｏと孔６の中心とを結ぶ相隣る二直線の
なす角θは互いに等しい。そして、孔６内に単結
晶または多結晶アルミナからなる発光容囲器２、
フリツトリング３および管状の導電体４を有する
組立構体を一つずつ配置する。導電体４の先端に
は電極７が設けられている。 3 and 4 are a plan view and a longitudinal sectional view showing an example of a heating element used to carry out the method of manufacturing a discharge lamp arc tube of the present invention. heating element 5
The outer shape is a circle, and a plurality of circular holes 6 having the same diameter are formed so that the distance from the center O is equal and the mutual spacing A in the circumferential direction is equal. has been done. That is, the angles θ formed by two adjacent straight lines connecting the center O of the heating element 5 and the center of the hole 6 are equal to each other. A light emitting envelope 2 made of single crystal or polycrystalline alumina is placed in the hole 6,
The assembly structure having the frit ring 3 and the tubular conductor 4 is placed one by one. An electrode 7 is provided at the tip of the conductor 4.
かかる装置を真空または不活性ガス雰囲気にな
つている容器８内に設け、誘導コイル９に電流を
流してその外部から発熱体５を誘導加熱すること
により昇温させ（第５図参照）、フリツトリング
３を溶融させて、発光管容囲器２の端部に導電体
４を封着する。なお、第５図において、１０はサ
ポートを示す。 Such a device is installed in a container 8 which is in a vacuum or an inert gas atmosphere, and the heating element 5 is heated by induction from the outside by passing a current through the induction coil 9 to raise the temperature (see Fig. 5). 3 is melted to seal the conductor 4 to the end of the arc tube envelope 2. In addition, in FIG. 5, 10 indicates support.
以上のように、本発明によれば、発熱体５にそ
の中心Ｏからの距離が等しく、かつ周方向の相互
間隔Ａが等しく位置するよう複数個の孔６を形成
し、これらの孔６内に発光管容囲器２、フリツト
リング３および導電体４を有する組立構体を一つ
ずつ配置し、外部から誘導加熱することにより発
熱体５を昇温させるので、その昇温が全体的に均
一化され、このためフリツトリング３の溶融も全
体的に均一化される。したがつて、発熱体５によ
るフリツトリング３の溶融が従来に比べて均一化
され、その結果複数本の発光管容囲器２の端部に
導電体４を気密に同時封着することができるもの
である。第５図に発光管容囲器２の端部に導電体
４を気密封着した状態を示す。 As described above, according to the present invention, a plurality of holes 6 are formed in the heating element 5 so that the distances from the center O thereof are equal and the mutual intervals A in the circumferential direction are equal, and An assembly structure having an arc tube envelope 2, a frit ring 3, and a conductor 4 is arranged one by one, and the heating element 5 is heated by induction heating from the outside, so that the temperature rise is uniform throughout. Therefore, the melting of the frit ring 3 is also made uniform throughout. Therefore, the frit ring 3 is melted more uniformly by the heating element 5 than in the past, and as a result, the conductor 4 can be hermetically sealed to the ends of a plurality of arc tube enclosures 2 at the same time. It is. FIG. 5 shows a state in which the conductor 4 is hermetically sealed to the end of the arc tube enclosure 2. As shown in FIG.
次に、本発明の具体的な例を説明する。 Next, a specific example of the present invention will be explained.
発熱体５は主として炭素からなり、直径が40
mm、高さが22mmである。発熱体５には直径10mmの
孔６が６個設けられており、発熱体５の中心Ｏか
ら孔の中心までの距離は各々12mmであり、角θは
60度で、孔６の周方向の相互間隔Ａは等しくなつ
ている。 The heating element 5 is mainly made of carbon and has a diameter of 40 mm.
mm, height is 22mm. The heating element 5 has six holes 6 with a diameter of 10 mm, the distance from the center O of the heating element 5 to the center of each hole is 12 mm, and the angle θ is
At 60 degrees, the mutual spacing A of the holes 6 in the circumferential direction is equal.
このような発熱体５の孔６の中央部に、外径
6.2mmの多結晶アルミナからなる発光管容囲器２、
その一端面上に載置したフリツトリング３、およ
びそのフリツトリング３の中央部に形成された孔
を貫通するニオブからなる導電体４を配置する。
フリツトリング３は酸化イツトリウム（Y2O3）、
酸化アルミニウム（Al2O3）、酸化カルシウム
（CaO）および酸化マグネシウム（MgO）からな
り、融点が約1365℃である。かかる装置をアルゴ
ンが50Torr封入された雰囲気中において、外部
から周波数が400kHzの高周波電源で徐々に誘導
加熱し発熱体５を昇温したところ、フリツトリン
グ３はほぼ均一に溶融して、複数本の発光管容囲
器２の端部に導電体４をそれぞれ気密に同時封着
することができた。そして、以後通常の方法によ
り例えば高圧ナトリウムランプ用等の発光管を得
る。 In the center of the hole 6 of such a heating element 5, an outer diameter
arc tube enclosure 2 made of 6.2 mm polycrystalline alumina;
A frit ring 3 placed on one end surface and a conductor 4 made of niobium passing through a hole formed in the center of the frit ring 3 are arranged.
Fritt ring 3 is yttrium oxide (Y 2 O 3 ),
It is composed of aluminum oxide (Al 2 O 3 ), calcium oxide (CaO) and magnesium oxide (MgO), and has a melting point of approximately 1365°C. When such a device is placed in an atmosphere filled with 50 Torr of argon and the temperature of the heating element 5 is increased by gradually inductively heating it using an external high-frequency power source with a frequency of 400 kHz, the frit ring 3 melts almost uniformly and a plurality of light emitting lights are generated. The conductors 4 could be hermetically sealed to the ends of the tube enclosure 2 at the same time. Thereafter, an arc tube for, for example, a high-pressure sodium lamp is obtained by a conventional method.
なお、本発明の方法は発光管容囲器内にナトリ
ウム等の封入物が封入された状態でも適用できる
ものである。 Note that the method of the present invention can be applied even when a substance such as sodium is enclosed in the arc tube container.
また、発熱体に形成する孔の数は発光管容囲器
の大きさに応じて増減する。 Further, the number of holes formed in the heating element increases or decreases depending on the size of the arc tube enclosure.
発明の効果
以上説明したように、本発明は発熱体内に複数
本の発光管容囲器を配置する場合にもフリツトリ
ングをほぼ均一に加熱溶融することができ、よつ
て複数本の発光管容囲器の端部に導電体に気密に
同時封着することができ、コストの低減を図るこ
とのできる放電ランプ発光管の製造方法を提供す
ることができるものである。Effects of the Invention As explained above, the present invention allows the frit ring to be almost uniformly heated and melted even when a plurality of arc tube enclosures are arranged in a heating element. It is possible to provide a method for manufacturing a discharge lamp arc tube, which can simultaneously and airtightly seal an electric conductor at the end of the vessel, and which can reduce costs.
第１図は従来の放電ランプ発光管の製造方法を
実施するために用いる発熱体の平面図、第２図は
その一部切欠図、第３図は本発明の放電ランプ発
光管の製造方法を実施するために用いる発熱体の
一例を示す平面図、第４図は第３図の−線断
面図、第５図は本発明の放電ランプ発光管の製造
方法を実施するための装置の一例を示す図、第６
図は発光管容囲器の端部に導電体を封着した状態
を示す一部断面図である。
２……発光管容囲器、３……フリツトリング、
４……導電体、５……発熱体、６……孔、７……
電極、８……容器、９……誘導コイル。
FIG. 1 is a plan view of a heating element used to carry out the conventional method for manufacturing a discharge lamp arc tube, FIG. 2 is a partially cutaway view thereof, and FIG. FIG. 4 is a plan view showing an example of a heating element used for carrying out the method, FIG. 4 is a sectional view taken along the line -- in FIG. 3, and FIG. Figure shown, No. 6
The figure is a partial cross-sectional view showing a state in which a conductor is sealed to the end of the arc tube envelope. 2... Arc tube enclosure, 3... Fritz ring,
4... Conductor, 5... Heating element, 6... Hole, 7...
Electrode, 8... Container, 9... Induction coil.
Claims (1)
容囲管の端部に、先端に電極を有する導電体をフ
リツトリングを用いて封着する放電ランプ発光管
の製造方法であつて、発熱体にその中心からの距
離が等しく、かつ周方向の相互間隔が等しく位置
するよう複数個の孔を形成し、それらの孔内に前
記発光管容囲器、前記フリツトリングおよび前記
導電体を有する組立構体を一つずつ配置し、外部
から前記発熱体を誘導加熱することにより前記フ
リツトリングを溶融して前記発光管容囲器の端部
に前記導電体を封着することを特徴とする放電ラ
ンプ発光管の製造方法。1. A method for manufacturing a discharge lamp arc tube, in which a conductor having an electrode at the tip is sealed to the end of an arc tube enveloping tube made of single crystal or polycrystalline alumina using a frit ring. A plurality of holes are formed so as to be located at equal distances from each other and equally spaced from each other in the circumferential direction, and an assembly structure having the arc tube enclosure, the frit ring, and the conductor is placed in the holes. A method for manufacturing a discharge lamp arc tube, characterized in that the electric conductor is sealed to an end of the arc tube envelope by melting the frit ring by inductively heating the heating element from the outside. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21651983A JPS60109137A (en) | 1983-11-17 | 1983-11-17 | Manufacture of luminescent tube for discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21651983A JPS60109137A (en) | 1983-11-17 | 1983-11-17 | Manufacture of luminescent tube for discharge lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60109137A JPS60109137A (en) | 1985-06-14 |
| JPH0467733B2 true JPH0467733B2 (en) | 1992-10-29 |
Family
ID=16689701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21651983A Granted JPS60109137A (en) | 1983-11-17 | 1983-11-17 | Manufacture of luminescent tube for discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60109137A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62173512A (en) * | 1986-01-28 | 1987-07-30 | Nitsukisou Kenkoo Kk | Keyboard |
-
1983
- 1983-11-17 JP JP21651983A patent/JPS60109137A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60109137A (en) | 1985-06-14 |
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