JPH041980B2 - - Google Patents
Info
- Publication number
- JPH041980B2 JPH041980B2 JP21599983A JP21599983A JPH041980B2 JP H041980 B2 JPH041980 B2 JP H041980B2 JP 21599983 A JP21599983 A JP 21599983A JP 21599983 A JP21599983 A JP 21599983A JP H041980 B2 JPH041980 B2 JP H041980B2
- Authority
- JP
- Japan
- Prior art keywords
- arc tube
- amalgam
- sealed
- cadmium
- sodium
- 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
- 229910000497 Amalgam Inorganic materials 0.000 claims description 24
- 229910052793 cadmium Inorganic materials 0.000 claims description 19
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 18
- 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 claims description 14
- 229910052708 sodium Inorganic materials 0.000 claims description 14
- 239000011734 sodium Substances 0.000 claims description 14
- 239000002775 capsule Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 7
- MJGFBOZCAJSGQW-UHFFFAOYSA-N mercury sodium Chemical compound [Na].[Hg] MJGFBOZCAJSGQW-UHFFFAOYSA-N 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 4
- 229910052753 mercury Inorganic materials 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 22
- 229910000679 solder Inorganic materials 0.000 description 10
- 238000007789 sealing Methods 0.000 description 7
- 239000012535 impurity Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 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
- H01J9/38—Exhausting, degassing, filling, or cleaning vessels
- H01J9/395—Filling vessels
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は透光性セラミクス発光管を有する高圧
ナトリウムランプの製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method of manufacturing a high pressure sodium lamp having a translucent ceramic arc tube.
透光性セラミクス発光管を有する高圧ナトリウ
ムランプは発光効率が特に優れたランプとして知
られている。このランプの発光管は耐熱、耐蝕性
が要求されるため透光性セラミクスたとえば透光
性アルミナセラミクス管が使用され、この管は熱
加工が困難であるところから管端開口部は別体の
閉塞体によつて封止している。閉塞体としてはニ
オブ製キヤツプやセラミクス製デイスクが知られ
ており、セラミクス管に対してガラスソルダや金
属ソルダを介して気密に接合されている。このよ
うな発光管は内部を排気してから始動用希ガス、
水銀およびナトリウムが封入されるが、水銀およ
びナトリウムは単体では取扱い上に問題があると
ころから（ナトリウム−水銀）アマルガムの形で
封入される。しかしながら、このアマルガムの形
で取扱つてもなお、空気や水分と反応したり、あ
るいはこれ等不純物を吸着して発光管内に持込
み、ランプ特性に悪い影響を与えるなどの欠点が
ある。
A high-pressure sodium lamp having a translucent ceramic arc tube is known as a lamp with particularly excellent luminous efficiency. The arc tube of this lamp requires heat resistance and corrosion resistance, so a translucent ceramic tube, such as a translucent alumina ceramic tube, is used, and since this tube is difficult to heat-process, the tube end opening is closed separately. It is sealed by the body. Niobium caps and ceramic disks are known as the closing body, and are hermetically bonded to the ceramic tube via glass solder or metal solder. After exhausting the inside of this type of arc tube, the rare gas for starting,
Mercury and sodium are encapsulated, but since mercury and sodium are difficult to handle when used alone, they are encapsulated in the form of an amalgam (sodium-mercury). However, even when handled in this amalgam form, it still has drawbacks such as reacting with air and moisture, or adsorbing these impurities and bringing them into the arc tube, adversely affecting lamp characteristics.
また、上記発光管の排気封止方法には大別して
排気管方式と無排気管方式とがある。排気管方式
は、上記閉塞体の中央部にニオブ管などの排気管
を気密に貫通させ、この排気管の内端部に電極を
取り付けたもので、排気および封入物の投入はこ
の排気管を通じて行なわれる。このものは排気お
よび封入物の封入が完了すると、排気管の外端部
を封切（チツプオフ）している。しかしながら、
この封切端部は閉塞体の外方に突出して最冷部と
なるため、最冷部の温度上昇が困難であり、した
がつて所望のナトリウム蒸気圧が得られにくいと
いう欠点がある。一方、無排気管方式はたとえば
特公昭49−12980号公報に示されるように、あら
かじめ一端を電極を支持する閉塞体により封止し
た発光管バルブをこの封止端側を下向きの姿勢と
してベルジヤ内に垂直に支持し、ベルジヤ内を始
動用希ガスと同一ガスで置換し、発光管バルブの
上端開口部よりアマルガムを投入した後、この上
端開口部を上記と同じく電極を支持する他方の閉
塞体により封止するものである。この方法は排気
管を使用しないことからチツプレスタイプと称さ
れており、点灯中に最冷部が発光管内の閉塞体近
傍、つまり管端部に形成されるので上記排気管方
式に較べて最冷部の温度を高温に保持でき、ラン
プ特性特に演色性の改善に有効となる。しかしな
がら、チツプレスタイプにおいては排気封止工程
中に次のごとき問題を生じる。すなわち、あらか
じめ封入して下端側の閉塞体上に溜まつているア
マルガムが上端側の封止工程時の輻射熱を受けて
昇温し、蒸発して発光管外へ消失してしまい所定
のランプ特性が得られにくくなるという欠点を生
じる。この欠点は特に発光管長の短かい小形ラン
プにおいて顕著となる。 Further, the exhaust sealing method for the arc tube is roughly divided into an exhaust pipe method and a non-exhaust pipe method. In the exhaust pipe method, an exhaust pipe such as a niobium pipe is airtightly passed through the center of the above-mentioned closing body, and an electrode is attached to the inner end of this exhaust pipe, and the exhaust gas and the filling material are passed through this exhaust pipe. It is done. In this case, the outer end of the exhaust pipe is tipped off after exhaustion and filling are completed. however,
Since this sealed end protrudes outward from the closure and becomes the coldest part, it is difficult to raise the temperature of the coldest part, and therefore it is difficult to obtain the desired sodium vapor pressure. On the other hand, in the non-exhaust tube method, as shown in Japanese Patent Publication No. 49-12980, an arc tube bulb whose one end is sealed with a closing body that supports an electrode is placed inside a bell gear with the sealed end facing downward. After replacing the inside of the bell gear with the same gas as the starting rare gas and injecting amalgam from the upper end opening of the arc tube bulb, this upper end opening is connected to the other closing body that supports the electrode in the same way as above. It is sealed by. This method is called the chitsupress type because it does not use an exhaust pipe, and the coldest part is formed near the obstructor in the arc tube, that is, at the end of the tube, so it is the coldest type compared to the exhaust pipe method described above. The temperature of the cold part can be maintained at a high temperature, which is effective in improving lamp characteristics, especially color rendering. However, in the chip press type, the following problems occur during the exhaust sealing process. In other words, the amalgam that has been sealed in advance and accumulated on the lower end side closing body receives radiant heat during the upper end side sealing process and heats up, evaporates and disappears outside the arc tube, resulting in the predetermined lamp characteristics. The disadvantage is that it becomes difficult to obtain. This drawback is particularly noticeable in small lamps with short arc tube lengths.
本発明は上記従来の欠点に対処してなされたも
ので、発光管内封入物である（ナトリウム−水
銀）アマルガムによる不純物の管内持込みおよび
製造時における同アマルガムの蒸発消失を防止し
て安定した特性を有する高圧ナトリウムランプの
製造方法を提供することを目的とする。
The present invention has been made to address the above-mentioned conventional drawbacks, and prevents impurities caused by (sodium-mercury) amalgam, which is the filling material in the arc tube, from being carried into the tube and from evaporating and disappearing the amalgam during manufacturing, thereby achieving stable characteristics. An object of the present invention is to provide a method for manufacturing a high-pressure sodium lamp having the following features.
本発明は高圧ナトリウムランプの発光管内封入
物である（ナトリウム−水銀）アマルガムまたは
このアマルガムと始動用希ガスとをカドミウム製
の容器に封入してカプセル化し、このカプセルを
発光管内に封入したのち、加熱によりカドミウム
容器を溶融破壊することによつて上記封入物を発
光管内に封入するようにした点に特徴がある。
In the present invention, (sodium-mercury) amalgam, which is the filling material in the arc tube of a high-pressure sodium lamp, or this amalgam and a starting rare gas are sealed in a cadmium container and encapsulated, and after the capsule is sealed in the arc tube, A feature of the present invention is that the cadmium container is melted and destroyed by heating, thereby enclosing the above-mentioned substance into the arc tube.
以下、本発明の一実施例を図面を参照して説明
する。まず、第１図に示すように透光性セラミク
スたとえば、高密度多結晶体のアルミナセラミク
スからなる内径5.5mm、長さ28mmの発光管バルブ
１の一端開口部をたとえばアルミナセラミクス製
の閉塞体２でAl2O3、CaO等を主成分とするガラ
スソルダ３を介して気密に封止し、かつ上記閉塞
体２に電極４を支持する電流導入体５をガラスソ
ルダ３を介して気密に貫通支持させる。次に上記
封止した一端側を下側とした第１図示の垂直姿勢
でベルジヤ（図示しない。）内に収容する。
Hereinafter, one embodiment of the present invention will be described with reference to the drawings. First, as shown in FIG. 1, one end opening of an arc tube bulb 1 made of a light-transmitting ceramic, for example, a high-density polycrystalline alumina ceramic, and having an inner diameter of 5.5 mm and a length of 28 mm is connected to a closing body 2 made of, for example, an alumina ceramic. The current introducing body 5 supporting the electrode 4 in the closing body 2 is hermetically sealed through the glass solder 3 mainly composed of Al 2 O 3 , CaO, etc., and penetrated through the glass solder 3 . Support. Next, it is housed in a bell gear (not shown) in the vertical position shown in the first figure with the sealed one end facing downward.
なお、要すればこの一端側の外周部に冷却装置
を取り付けて冷却するようにしてもよい。ついで
ベルジヤ内を発光管内に封入する始動用希ガスと
同一ガスで置換すれば、発光管バルブ１内もこの
ガスで置換される。次にカドミウム製の容器６に
（ナトリウム−水銀）アマルガム７を封入してカ
プセル８化したものを発光管バルブ１の封止刺の
上端開口部から同バルブ１内に投入すれば、カプ
セル８は矢印で示すように落下して閉塞体２の内
面上に達する。 Note that, if necessary, a cooling device may be attached to the outer periphery of this one end for cooling. Then, if the inside of the bell gear is replaced with the same gas as the starting rare gas sealed in the arc tube, the inside of the arc tube bulb 1 is also replaced with this gas. Next, if a cadmium container 6 is filled with (sodium-mercury) amalgam 7 to form a capsule 8, and the capsule 8 is introduced into the bulb 1 through the opening at the upper end of the sealing bar of the arc tube bulb 1, the capsule 8 will be It falls as shown by the arrow and reaches the inner surface of the closure body 2.
この状態で第２図に示すように発光管バルブ１
の上端開口部に他方の閉塞体２Ａと、この閉塞体
２Ａに設けた貫通孔９を貫通して一端に別の電極
４Ａを支持する電流導入体５Ａとを適当な支持手
段で支持するとともに上記閉塞体２Ａの上面にガ
ラスソルダ粉末の圧縮成形体３Ａを載置する。 In this state, as shown in Figure 2, the arc tube bulb 1
The other closing body 2A is supported at the upper end opening, and the current introducing body 5A, which passes through a through hole 9 provided in this closing body 2A and supports another electrode 4A at one end, is supported by suitable support means, and the above-mentioned A compression molded body 3A of glass solder powder is placed on the upper surface of the closure body 2A.
ついで、この圧縮成形体３Ａをガラスソルダの
融点約1500℃に加熱し、溶融したガラスソルダ３
により発光管バルブ１と閉塞体２Ａ周面との間隙
および閉塞体２Ａの貫通孔９の空隙部を充塞して
封止する。この加熱封止工程時の輻射熱は先に封
入してある（ナトリウム−水銀）アマルガム７に
まで達するが、通常使用されるナトリウム重量比
10〜35％のアマルガム７の融点が222℃〜34℃と
低いのに対し、これを囲う容器６のカドミウムの
融点はアマルガムのそれより100℃〜300℃も高い
320.9℃なので、上記輻射熱によつては溶融する
ことがなく、したがつてアマルガム７の蒸発消失
は完全に防止される。 Next, this compression molded body 3A is heated to the melting point of glass solder, approximately 1500°C, and the molten glass solder 3
As a result, the gap between the arc tube bulb 1 and the circumferential surface of the closing body 2A and the gap in the through hole 9 of the closing body 2A are filled and sealed. The radiant heat during this heat sealing process reaches up to the previously sealed (sodium-mercury) amalgam 7, but the sodium weight ratio normally used is
While the melting point of 10-35% amalgam 7 is low at 222°C to 34°C, the melting point of cadmium in the container 6 surrounding it is 100°C to 300°C higher than that of amalgam.
Since the temperature is 320.9° C., the radiant heat does not melt the amalgam 7, so that the amalgam 7 is completely prevented from disappearing by evaporation.
このようにして製造された発光管内の上記カプ
セル８を次に適当な手段で加熱してカドミウム容
器６を溶融破壊すればアマルガム７を露出して発
光管は完成する。上記加熱手段としてはたとえば
両電極４，４Ａ間に放電を生じさせてフラツシン
グを行う、つまりフラツシングの放電に伴つて発
生する熱の利用、あるいは発光管外部からの高周
波加熱手段等があり、これ等手段により金属とし
ては融点の低いカドミウムは容易に溶融させるこ
とができる。 The capsule 8 in the arc tube thus manufactured is then heated by an appropriate means to melt and destroy the cadmium container 6, exposing the amalgam 7 and completing the arc tube. Examples of the heating means include performing flashing by causing a discharge between the electrodes 4 and 4A, that is, using heat generated as a result of flashing discharge, or high-frequency heating means from outside the arc tube, etc. Depending on the method, cadmium, which has a low melting point as a metal, can be easily melted.
また、この発光管は点灯時には最冷部温度は
600〜800℃にも達し、上記カドミウムは蒸気化す
るので、固形物として光を遮断するような不都合
もないばかりでなく、カドミウム蒸気は水銀蒸気
と同様に緩衝ガスとして作用し、アークの入力を
高め発光金属であるナトリウムの蒸気圧を上昇さ
せる働きをするので一層好都合である。しかも、
アマルガム７は発光管内に封入されるまでの間、
アマルガムよりも空気や水に対して反応性が小さ
いカドミウムの容器６に封入されているので、従
来のように不純物を発光管内に持ち込みランプ特
性に悪影響を与えるようなことも防止できる。 In addition, the temperature of the coldest part of this arc tube when lit is
The temperature reaches 600 to 800℃, and the cadmium vaporizes, so not only does it not have the inconvenience of blocking light as a solid substance, but cadmium vapor also acts as a buffer gas, similar to mercury vapor, and reduces arc input. This is even more convenient since it serves to increase the vapor pressure of sodium, which is a highly luminescent metal. Moreover,
Until the amalgam 7 is sealed in the arc tube,
Since it is sealed in a cadmium container 6 that is less reactive to air and water than amalgam, it is possible to prevent impurities from being introduced into the arc tube and adversely affecting lamp characteristics as in the conventional case.
上気実施例ではカドミウム容器６内にアマルガ
ム７のみを封入したが、さらに始動用希ガスをも
同封するようにしてもよい。すなわち、発光管の
製造において始動用希ガスを封入する方法は繁雑
である。 In the upper air embodiment, only the amalgam 7 is enclosed in the cadmium container 6, but a rare gas for starting may also be enclosed. That is, the method of filling the starting rare gas in manufacturing the arc tube is complicated.
特に上気チツプレス製造方法の場合にはその封
入時期（温度）、封入装置圧など種々の問題点が
あり、所定封入圧を確実に得ることは仲々に困難
なことであつた。これに対し、始動用希ガスの発
光管内に放出されたとき所定圧力が得られるよう
な量をアマルガスとともにあらかじめカドミウム
容器６内に封入してカプセル８化しておき、この
カプセルを発光管内に封入するようにすれば、操
作はきわめて簡略化され、しかも確実に所定封入
圧を得ることも可能となる。また、始動用希ガス
として混合ガスたとえば（Ne−Ar）混合ガスを
使用する場合、カドミウム容器６には一方の希ガ
スのみを封入するとともに発光管内にはあらかじ
め他方の希ガスを封入しておき、発光管の完成し
たのち上記カドミウム容器６を加熱により溶融破
壊して両希ガスの混合ガスを得るようにすること
もできる。 Particularly, in the case of the upper air chip press production method, there are various problems such as the timing of charging (temperature) and the pressure of the charging device, and it has been difficult to reliably obtain a predetermined charging pressure. On the other hand, an amount of the starting rare gas that will provide a predetermined pressure when released into the arc tube is sealed in advance in a cadmium container 6 along with amal gas to form a capsule 8, and this capsule is sealed in the arc tube. By doing so, the operation is extremely simplified, and it is also possible to reliably obtain the predetermined sealing pressure. In addition, when using a mixed gas, for example (Ne-Ar) mixed gas, as the starting rare gas, only one rare gas is filled in the cadmium container 6, and the other rare gas is filled in the arc tube in advance. After the arc tube is completed, the cadmium container 6 may be melted and destroyed by heating to obtain a mixed gas of both rare gases.
以上詳述したように本発明によれば、高圧ナト
リウムランプの発光管内封入物である（ナトリウ
ム−水銀）アマルガムまたはこのアマルガムと始
動用希ガスとをカドミウム容器に封入してカプセ
ル化したものを発光管バルブ内に封入してから上
記カドミウム容器を溶融破壊することによつて封
入物を放出させるようしたので、アマルガムと空
気、水などとの反応ならびに不純物の吸着による
発光管内への不純物の持ち込みを防止することが
できるし、あるいはさらに始動用希ガスの封入を
簡略化するとともにその所定封入圧が確実に得ら
れるようになる。しかも発光管製造時の管端封止
工程においては、輻射熱による封入アマルガムの
蒸発による消失を防止してランプ特性の低下をも
防止することができる等種々の利点を有するもの
である。
As described in detail above, according to the present invention, the (sodium-mercury) amalgam, which is the filling material in the arc tube of a high-pressure sodium lamp, or the amalgam and a starting rare gas sealed in a cadmium container and encapsulated, emit light. The cadmium is sealed in the tube bulb and then melted and destroyed to release the cadmium, which prevents impurities from being brought into the arc tube due to reactions between the amalgam and air, water, etc. and adsorption of impurities. It is possible to prevent this, or furthermore, it is possible to simplify the charging of the starting rare gas and to ensure that the predetermined charging pressure can be obtained. Moreover, in the tube end sealing process during the manufacture of the arc tube, it has various advantages such as being able to prevent the amalgam from being lost due to evaporation due to radiant heat and thereby preventing deterioration of the lamp characteristics.
第１図および第２図は本発明方法の説明図で、
それぞれ高圧ナトリウムランプ発光管の一端部の
製造工程時の状態図を示す。
１……発光管バルブ、２，２Ａ……閉塞体、３
……ガラスソルダ、３Ａ……ガラスソルダ圧縮成
形体、４，４Ａ……電極、５，５Ａ……電流導入
体、６……カドミウム容器、７……ガラスソル
ダ、８……ペレツト。
1 and 2 are explanatory diagrams of the method of the present invention,
Each figure shows a state diagram of one end of a high-pressure sodium lamp arc tube during the manufacturing process. 1... Arc tube bulb, 2, 2A... Obstruction body, 3
... Glass solder, 3A ... Glass solder compression molded body, 4, 4A ... Electrode, 5, 5A ... Current introduction body, 6 ... Cadmium container, 7 ... Glass solder, 8 ... Pellet.
Claims (1)
始動用希ガス、水銀およびナトリウムを封入して
なる発光管を有する高圧ナトリウムランプの製造
方法において、（ナトリウム−水銀）アマルガム
単体またはこのアマルガムと始動用希ガスとをカ
ドミウム製の容器に封入してカプセル化し、この
カプセルを発光管バルブ内に封入したのち、加熱
により上記カドミウム容器を溶融破壊させるよう
にしたことを特徴とする高圧ナトリウムランプの
製造方法。1. In a method for manufacturing a high-pressure sodium lamp having an arc tube made of a light-transmitting ceramic arc tube bulb filled with a rare gas for starting, mercury, and sodium, (sodium-mercury) amalgam alone or this amalgam for starting is used. A method for manufacturing a high-pressure sodium lamp, characterized in that a rare gas is sealed in a cadmium container to encapsulate the capsule, the capsule is sealed in an arc tube bulb, and then the cadmium container is melted and destroyed by heating. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21599983A JPS60109140A (en) | 1983-11-18 | 1983-11-18 | Manufacture of high-pressure sodium lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21599983A JPS60109140A (en) | 1983-11-18 | 1983-11-18 | Manufacture of high-pressure sodium lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60109140A JPS60109140A (en) | 1985-06-14 |
| JPH041980B2 true JPH041980B2 (en) | 1992-01-16 |
Family
ID=16681714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21599983A Granted JPS60109140A (en) | 1983-11-18 | 1983-11-18 | Manufacture of high-pressure sodium lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60109140A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3688612B2 (en) * | 2000-09-22 | 2005-08-31 | 松下電器産業株式会社 | Mercury inclusion body, method for producing the mercury inclusion body, and fluorescent lamp using the mercury inclusion body |
| WO2014071617A1 (en) * | 2012-11-09 | 2014-05-15 | 福建永德吉灯业股份有限公司 | Method for charging discharge medium in gas-discharge lamp and product manufactured therefrom |
-
1983
- 1983-11-18 JP JP21599983A patent/JPS60109140A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60109140A (en) | 1985-06-14 |
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