JPS6010552A - Low pressure mercury vapor discharge lamp - Google Patents

Abstract

PURPOSE:To facilitate encapsulation of amalgam by providing amalgam or metallic body onto a supporting rod then inserting said rod into an exhaust tube to communicate with the bulb of light emission tube while sealing said rod and exhaust tube through welding. CONSTITUTION:Phosphor substance is coated onto the inner face of a light emission bulb 1 while the flare section 5 of stem 4 constructing a mount 3 is sealed at the opening at the opposite ends of bulb 1. Lead wires 7, 7 are sealed air- tightly against the stem tube 6 while an exhaust tube 10 opening to the inner space 9 of bulb 1 is projected. A glass supporting rod 11 is inserted into the exhaust tube 10 while a containing recess 12 is made in the outercircumference at the leading edge of the supporting rod 11 to hold metallic body 13 which will bond with mercury to produce amalgam. Then predetermined amount of inert gas or mercury is encapsulated in the bulb 1 through the exhaust tube 10, while the outwardly extended section of the exhaust tube 10 is heated by a burner 14 to seal the supporting rod 11 and the exhaust tube 10 integrally through welding thus to facilitate encapsulation of amalgam.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明はアマルガムを用いて管内水銀蒸気圧を制御フる
ようにした低圧水銀蒸気放電灯に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a low-pressure mercury vapor discharge lamp in which the mercury vapor pressure inside the tube is controlled using amalgam.

〔発明の技術的背景とその問題点〕[Technical background of the invention and its problems]

一般にけい光ランプに代表式れる低圧水銀蒸気放電灯で
は、管壁温度が４０℃前後で、水銀蒸気圧が約６×１０
〜３１１１１Ｈｇの時に、供給沁れた電゛力を紫外線に
変換する効率が最高となるように設計されておシ、この
時のランプ周囲温度は約２０〜２５℃とされている。し
たがって、周囲温度がこの値を大幅に上回ると紫外線の
変換効率が急激に悪化し、光出力が低下する等の問題が
生じる。In low-pressure mercury vapor discharge lamps, typically represented by fluorescent lamps, the tube wall temperature is around 40°C, and the mercury vapor pressure is approximately 6 × 10
It is designed so that the efficiency of converting the supplied electric power into ultraviolet light is the highest when the temperature is 31,111 Hg, and the lamp ambient temperature at this time is about 20 to 25°C. Therefore, when the ambient temperature significantly exceeds this value, the conversion efficiency of ultraviolet rays deteriorates rapidly, causing problems such as a decrease in light output.

ところで、近年けい光ラングの高出力化や密閉型の照明
器具内での使用に伴って、けい光ランプの動作温度が高
くなる揚台があシ、このためりい光ラングの周囲温度が
上記値を上回る機会も多く、光出力や紫外線の変換効率
の低下が同順となっている。一方、けい光ランプの管内
水銀蒸気圧を適正値に制御する手段としては、ランプ内
に余分な水銀と結合してアマルガムを形成する例えはイ
ンジウム等の金属体を刺入したシ、あるいはアマルガム
自体をそのまま封入することが既に知られておシ、主に
高負荷形のけい光ラングにａｔ々適用されている。これ
らアマルガムやアマルガム形成用の金属体は、けい光ラ
ンプの中でも水銀が凝縮し易い低温部分に設置すること
が望ましく、このようなことから従来では実公昭５１−
４６３７６号公報に示されているようにアマルガムの設
置場所としてステムの排気管を利用したものか知られて
いる。By the way, in recent years, with the increase in the output of fluorescent lamps and their use in closed lighting equipment, the operating temperature of fluorescent lamps has become higher due to the rise of platforms. There are many occasions when the value is exceeded, and the decrease in light output and ultraviolet conversion efficiency follows in the same order. On the other hand, as a means to control the mercury vapor pressure in the tube of a fluorescent lamp to an appropriate value, it is possible to insert a metal such as indium into the lamp, which combines with excess mercury to form an amalgam, or the amalgam itself. It is already known to encapsulate the phosphor as it is, and it is mainly applied to high-load type fluorescent rungs. It is desirable to install these amalgams and metal bodies for forming amalgams in the low-temperature part of the fluorescent lamp where mercury tends to condense.
As shown in Japanese Patent No. 46376, it is known that the exhaust pipe of the stem is used as the installation location for the amalgam.

しかしながら、この先行技術の構成によると、排気管の
先端部にアマルガムを収容保持するための球形をなした
空洞部分を設けたシ、あるいｎ７７＃ガムを保持するた
めの枚数のコンテナや支持部材を必要とするので、部品
点数が増大するば〃・シでなく、ステム自体が複艙かっ
特殊な構造となってしまう。したがって、製造に手間を
要するとともにコスト高を招来する等の不都合が生じる
。However, according to the configuration of this prior art, a spherical hollow part is provided at the tip of the exhaust pipe to accommodate and hold the amalgam, or a container or support member with a number of sheets to hold the n77# gum is provided. This not only increases the number of parts, but also requires the stem itself to have a special structure with multiple bays. Therefore, there are disadvantages such as requiring time and effort to manufacture and increasing costs.

〔発明の目的〕[Purpose of the invention]

本発明はこのような事情にもとづいてなづれたもので、
特殊な構造のステムを用いることなくアマルガムもしく
は金属体を排気管に取シ付りることかでき、一般に汎用
Ｂれているステムをその祉ま利用することが可能となっ
て製造を容易に行左えると−ともに、コストの低減を実
現できる低圧水銀蒸気放電灯の提供金目的とする。The present invention was developed based on these circumstances.
The amalgam or metal body can be attached to the exhaust pipe without using a stem with a special structure, and generally general-purpose stems can be used, making manufacturing easy. The purpose of this project is to provide a low-pressure mercury vapor discharge lamp that can reduce costs as well as reduce costs.

〔発明の概要〕[Summary of the invention]

すなわち、本発明の吸上とするところは、ステムの排気
管に挿入可能な支持棒にアマルガムもしくはアマルガム
形成用の金峰体を設け、この支持棒を上記排気省内に挿
入してアマルガムもしくは金属体を発光管バルブ内と連
通させるとともに、上記支Ｊづ柿と利”気管とを一体的
に溶断封止し、この制止部によって支持棒を排気管に同
定したことを特徴とする。That is, the suction of the present invention is to provide a support rod that can be inserted into the exhaust pipe of the stem with an amalgam or a metal body for forming an amalgam, and insert this support rod into the exhaust pipe to form an amalgam or metal body. It is characterized in that the support rod is communicated with the inside of the arc tube bulb, the support rod and the trachea are integrally fused and sealed, and the support rod is identified as the exhaust pipe by this stopper.

〔発明の実Ｍｌｊ例〕[Examples of actual inventions]

以下本発明の一実施例を、第１図ないし第３図にもとづ
いて説明する。An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

図中１は直管形の発光償バルブであシ、その内面にはけ
い光体被膜２が被着されている。発光管パルプ１０両端
開口部（一部のみを図示）にはマウント３を構成するス
テム４のフレア部５が封泊されている。このステム４の
ステム管６には１対のリード線７，７が気密に貫通制止
されておシ、これらリード線２，７の発光％　バルブ１
内に位置する先端部間には電極８が継線されている。ま
たステム管６には一端が発光管パル２１の軸方向に泊っ
て外方に延在されるとともに、他端が発光管バルブ１の
内部空間９に開口する排気管１ｏが突設されておル、こ
の排気管１０を通じて発光管バルブ１内のガス洗浄、フ
ロー排気および所定回の不活性ガスや水銀の刺入が行な
われる。４そしてこの排気管ｌｏ内にはガラス製の支持
棒１１が挿入されている。支持棒１１の挿入先端側外周
面には収容凹部１２が凹設されておシ、この収容凹部１
２内には上記発光管バルブ１内に封入した水銀と結合す
ることによシアマルガムを形成する金属体１３が例えば
嵌合等の手段にょシ保持されている。この金属体１３と
しては例えはインジウム（Ｉｎ）。In the figure, reference numeral 1 denotes a straight tube type luminescence compensating bulb, and a phosphor coating 2 is coated on the inner surface of the bulb. A flared portion 5 of a stem 4 constituting a mount 3 is sealed in the openings at both ends of the arc tube pulp 10 (only a portion is shown). A pair of lead wires 7, 7 are hermetically prevented from penetrating the stem tube 6 of the stem 4.
An electrode 8 is connected between the tip portions located inside. Further, the stem tube 6 is provided with an exhaust pipe 1o that protrudes from the stem tube 6 and has one end extending outwardly in the axial direction of the arc tube pal 21 and the other end opening into the internal space 9 of the arc tube bulb 1. Through this exhaust pipe 10, gas cleaning within the arc tube bulb 1, flow exhaust, and injection of inert gas or mercury are performed a predetermined number of times. 4. A support rod 11 made of glass is inserted into the exhaust pipe lo. A housing recess 12 is formed in the outer circumferential surface of the insertion tip of the support rod 11.
A metal body 13, which forms sheamalgam by combining with the mercury sealed in the arc tube bulb 1, is held in the metal body 2 by means of fitting, for example. This metal body 13 is, for example, indium (In).

ビスマス（Ｂｉ）、スズ（Ｓｎ）、鉛（ｐｂ）、水銀（
Ｈｇ）およびこれら各程合Ｍ’（ｚ適当に混合塾せた合
金を好適とし、この金属体１３は排気管１゜の内部空間
９への曲目部分に位置されている。Bismuth (Bi), tin (Sn), lead (pb), mercury (
Hg) and their respective degrees M'(z) are preferably mixed appropriately, and this metal body 13 is located at the curved portion of the exhaust pipe 1° into the internal space 9.

そして上記支持棒１１は排気管ｉｏの外方への延在部分
をバーナ１４で加熱することによってこの排気管１ｏと
一体的に気密に溶断封止されておシ、この封止部１５に
よって支持棒１１が排気管ｌＯに固定されている。The support rod 11 is hermetically sealed integrally with the exhaust pipe 1o by heating the outwardly extending portion of the exhaust pipe 1o with a burner 14, and is supported by the sealing portion 15. A rod 11 is fixed to the exhaust pipe lO.

次に上述の如き構成のけい光ランプを製造する手順につ
いて説明する。発光管バルブ１の内面にけい光体被膜２
′！ｉｌ−被着したならば、この発光管パル２１の両端
開口部内にマウント３を挿入し、電極８をバルブ軸上に
位置させるとともに、フレア部５を両端開口部に気密に
封着する。Next, a procedure for manufacturing a fluorescent lamp having the above-mentioned structure will be explained. Fluorescent coating 2 on the inner surface of the arc tube bulb 1
′! Once the illuminant is adhered, the mount 3 is inserted into the openings at both ends of the arc tube pal 21, the electrode 8 is positioned on the bulb axis, and the flare portion 5 is hermetically sealed to the openings at both ends.

この状態でステム４の排気１ｇｘｏを通じて発光ちバル
ブ１内のガス洗浄およびフロー排気を行った後、同じく
この排気管１０′を通じて発光管バルブ１内に所定量の
不活性ガスと水銀の封入を行う。次に上記支描棒１ノの
収容凹部１２内に金属体１３を嵌め込んだならば、この
支持棒１１を第２図に示したように排気管１０の外方へ
の開口部から挿入して金り１体１３を内部空間９への開
口部分に位置させる。この後、排気管１０の外方への延
在１１ＸＩＸ分をバーナ１４で加熱し、この排気管１０
と内側の支持棒１１とを同時に気密に溶断封止すれば、
この封止部１５によって支持棒１１が排気管１０内に挿
入された状態で固定され、アマルカ′ム入シのけい光ラ
ンプが完成する。In this state, after gas cleaning and flow exhaust from the light emitting tube bulb 1 are performed through the exhaust gas 1gxo of the stem 4, a predetermined amount of inert gas and mercury are sealed into the light emitting tube bulb 1 through the exhaust pipe 10'. . Next, once the metal body 13 is fitted into the accommodation recess 12 of the support rod 1, the support rod 11 is inserted from the outward opening of the exhaust pipe 10 as shown in FIG. Then, the metal plate 13 is positioned at the opening to the internal space 9. Thereafter, the outward extension of the exhaust pipe 10 by 11XIX is heated by the burner 14, and this exhaust pipe 10
If the inner support rod 11 and the inner support rod 11 are hermetically sealed at the same time,
The support rod 11 is fixed in the state inserted into the exhaust pipe 10 by the sealing portion 15, and the amalcam-filled fluorescent lamp is completed.

このようなけい光ランプによると、排気管１０における
発光管バルブ１内への開口部分にアマルガム形成用の金
属体１３が位置しているので、けい光ランプの周囲温度
の上昇に伴って水銀蒸気圧が適正仙を上回ると上記金属
体１３が発光管バルブ１内の余分な水銀と結合してこれ
を取シ込むことになシ、よって水銀蒸気圧の高圧化か制
止され、紫外線の変換効率を常時高効率に保つことがで
きるから、光出力を高く維持することができる。According to such a fluorescent lamp, since the metal body 13 for amalgam formation is located at the opening of the exhaust pipe 10 into the arc tube bulb 1, mercury vapor is released as the ambient temperature of the fluorescent lamp increases. When the pressure exceeds the appropriate level, the metal body 13 combines with the excess mercury in the arc tube bulb 1 and sucks it in. This prevents the mercury vapor pressure from increasing and reduces the conversion efficiency of ultraviolet rays. Since it is possible to maintain high efficiency at all times, it is possible to maintain a high optical output.

しかして、上記の如き構成によれは、金属体１３を保持
した支持棒１１を排気管１０内に挿入し、これら排気管
１０と支持棒１１とを一体的に溶断刺止することによシ
支持棒１ノを排気％１０に１１足したので、一般に汎用
されているステム４や排気管１０をモのｊま利用して金
り体１３を排気管１０に取シ伺けることができる。However, with the above structure, the support rod 11 holding the metal body 13 is inserted into the exhaust pipe 10, and the exhaust pipe 10 and the support rod 11 are integrally melted and stuck. Since the support rod 1 is added to the exhaust percentage 10 by 11, the metal body 13 can be attached to the exhaust pipe 10 by making full use of the commonly used stem 4 and exhaust pipe 10.

したがって、従来のように特殊ガ構造のステムや排気管
を用意したシ、あるいは複数の部材で支持棒１１を支持
する必要もない。加えて支持棒１１は排包管１０を封止
する際にこの排気管１０に固定きれるので、支持棒１１
を固定するための格別な作業り、不散となる。よって製
造組み立てを容易に行え、上記−截のステム４をそのま
ま利用できることと相まってコストの低減を実現できる
。Therefore, there is no need to provide a stem with a special structure or an exhaust pipe, or to support the support rod 11 with a plurality of members, as is the case in the past. In addition, since the support rod 11 can be fixed to the exhaust pipe 10 when sealing the exhaust pipe 10, the support rod 11
It takes a lot of work to fix it, and it becomes a mess. Therefore, manufacturing and assembling can be easily performed, and the above-mentioned cut stem 4 can be used as is, and cost reduction can be realized.

なお、本発明は上述した実施例に制約されるものでは々
く、例えば第４図に示したように、支持棒１１の挿通先
端部に点灯初期の不仮定時の水銀蒸気圧を制御する補助
金属体２１を設けるとともに、この補助金属体２１から
軸方向にＭ＋間した部位に点灯安定時での水銀蒸気圧を
制御する生金ＢＩ体２２ｆ設けても良い。この場合支持
棒１１は補助金属体２１が電極８（Ｎ極）の近傍に位置
するように発光管バルブ１内に突出忌れておシ、かつ主
金属体２２は排気管１０内に位置されているとともに、
ステム管６の側面に開設した通孔２３と対向づれている
。It should be noted that the present invention is not limited to the embodiments described above, and for example, as shown in FIG. In addition to providing the metal body 21, a raw metal BI body 22f for controlling the mercury vapor pressure during stable lighting may be provided at a location M+ apart from the auxiliary metal body 21 in the axial direction. In this case, the support rod 11 is projected into the arc tube bulb 1 so that the auxiliary metal body 21 is located near the electrode 8 (N pole), and the main metal body 22 is located in the exhaust pipe 10. At the same time,
It is arranged to face a through hole 23 formed on the side surface of the stem tube 6.

また支持棒は力゛ラス製に特定されないとともに、上記
アマルガム形成用の全１体に代ってアマルガムそのもの
を支掲、棒に取シ伺りても良く、この場合には水銀の刺
入は不散となる。Furthermore, the support rod is not limited to being made of molten glass, and instead of the entire amalgam forming body mentioned above, the amalgam itself may be supported and the rod may be used as a support rod, and in this case, the insertion of mercury is not necessary. It becomes scattered.

〔発明の効果〕〔Effect of the invention〕

以上詳述した本発明によれは、ステムの排気管に挿入回
部な支持棒にアマルガムもしくはアマルガム形成用の金
属体音＆リ−１この支持棒を上記排気管内に挿入してア
マルガムもしくは金り体を発光％バルブ内と連通チ七る
とともに、上記支持棒と排気管とを一体的に溶ｈ　＊４
止し、この制止部によって支持ｅを排気管に固定したか
ら、一般に汎用されているステムや排気名をそのｔま利
用してアマルガムもしくは金り体を排気管に取シ付ける
ことかでさ・、従来のように特殊な栴造のステムや排気
管を用意したシ、複数の部狗で支持Ｓを支持する必要も
ない。しかも排気管を封止する際に支持棒の固定が同時
に行なわれるので、格別な固定作業は不要となシ、した
がって製造組み立てを容易に行えコストの低減を実現で
きる利点がある。According to the present invention described in detail above, amalgam or a metal body for forming amalgam is inserted into the support rod which is inserted into the exhaust pipe of the stem. In addition to communicating the body with the inside of the light emitting bulb, the support rod and exhaust pipe are integrally melted. *4
Now that the support e has been fixed to the exhaust pipe using this stopper, you can attach the amalgam or metal body to the exhaust pipe using the commonly used stem and exhaust names. There is no need to prepare a special stem or exhaust pipe or to support the support S with multiple parts as in the past. Moreover, since the support rod is fixed at the same time as the exhaust pipe is sealed, there is no need for special fixing work, and therefore there is an advantage that manufacturing and assembly can be easily performed and costs can be reduced.

【図面の簡単な説明】[Brief explanation of drawings]

第１図ないし第３図は本発明の一実施例を示し、第１図
はｌｌｉＳｌｒ面図、第２図および第３図は製造工程ル
゛↓序を示す工程前、切回、第４図は本発明の仙の実施
例を示す断面−である。 ｌ・・・発光管バルブ、３・・・マウント、４・・・ス
テム、１０・・・排気性、１１・・・支持棒、１３，２
ハ２２・・・金属体（アマルガム）、１５・・・封止部
。 川願人代理人　ブｆ堤士　鈴　江　武　彦１、り、、２
　ｔFigures 1 to 3 show one embodiment of the present invention, Figure 1 is an lliSlr side view, Figures 2 and 3 are the manufacturing process steps before and after cutting, and Figure 4 is a cross-sectional view of the present invention. 1 is a cross-sectional view showing an embodiment of the present invention. l... Arc tube bulb, 3... Mount, 4... Stem, 10... Exhaust performance, 11... Support rod, 13, 2
C22... Metal body (amalgam), 15... Sealing part. Kawaganito's agent Bf Tsutsumi Suzue Takehiko 1, ri,, 2
t

Claims (2)

【特許請求の範囲】[Claims] （１）発光管バルブの開口端部にマウントのステムを刺
着し、この発光龜バルブ内に点灯時に発光管バルブ内の
水銀蒸気圧を制御するアマルガムもしくは発光管バルブ
内の水銀と結合することにより上記アマルガムを形成す
る全屈１体を刺入した低圧水銀蒸気放電灯において、上
記ステムは一端が発光龜バルブの外方に延在するととも
に、他端が発光もバルブ内に開口する排気％を有し、こ
の排気性・内に挿入可能な支持棒に上記アマルガムもし
くは金＆５体を設け、この支持棒を上記排気管内に挿入
してアマルガムもしくは金属体を発光管バルブ内に連通
さゼるとともに、この支持棒と排気性とを一体的に気密
に溶断制止し、この封止部によシ支持棒を排気管に固定
したことを特徴とする低圧水銀蒸気放電灯。(1) The stem of the mount is inserted into the open end of the arc tube bulb, and the amalgam that controls the mercury vapor pressure inside the arc tube bulb or the mercury inside the arc tube bulb is bonded to the bulb when the bulb is turned on. In a low-pressure mercury vapor discharge lamp in which a full-length mercury vapor discharge lamp is inserted to form the amalgam, one end of the stem extends outside the light-emitting bulb, and the other end opens into the light-emitting bulb. The above-mentioned amalgam or gold body is provided on the support rod that can be inserted into the exhaust pipe, and the support rod is inserted into the exhaust pipe to communicate the amalgam or the metal body inside the arc tube bulb. A low-pressure mercury vapor discharge lamp characterized in that the support rod and the exhaust are integrally and airtightly sealed by fusing, and the support rod is fixed to the exhaust pipe through this sealing portion. （２）上記支持棒に点灯安定時の水銀蒸気圧を制御する
主金属体と点灯初期の不安定時の水銀蒸気圧を制御する
補助金総体とケ夫々設け、上記主金属体をステムの排勿
管内に位置させるとともに、補助金属体はマウントの陰
極の近傍に位す−させたことを特徴とする特許詐求の範
囲第（１）項記載の低圧水銀蒸気放電灯。(2) The support rod is provided with a main metal body that controls the mercury vapor pressure when the lighting is stable, and a subsidy body that controls the mercury vapor pressure when the lighting is unstable in the initial stage, and the main metal body is attached to the stem. The low-pressure mercury vapor discharge lamp according to claim (1), characterized in that the auxiliary metal body is located within the tube and near the cathode of the mount.