JPS6081754A - Low pressure mercury vapor discharge lamp - Google Patents

Low pressure mercury vapor discharge lamp

Info

Publication number
JPS6081754A
JPS6081754A JP18994683A JP18994683A JPS6081754A JP S6081754 A JPS6081754 A JP S6081754A JP 18994683 A JP18994683 A JP 18994683A JP 18994683 A JP18994683 A JP 18994683A JP S6081754 A JPS6081754 A JP S6081754A
Authority
JP
Japan
Prior art keywords
filament
mandrel
lamp
pressure mercury
vapor discharge
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.)
Pending
Application number
JP18994683A
Other languages
Japanese (ja)
Inventor
Yoshimi Watanabe
渡邊　好美
Tetsuo Mine
峯　哲郎
Shigehiro Sato
佐藤　滋洋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP18994683A priority Critical patent/JPS6081754A/en
Publication of JPS6081754A publication Critical patent/JPS6081754A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/067—Main electrodes for low-pressure discharge lamps

Landscapes

  • Discharge Lamp (AREA)

Abstract

PURPOSE:To increase the property of molding, use an economical iron mandrel, reduce the weight of a filament, and improve resistance to vibration by comprising an electrode filament with an alloy made of tungusten and molybdenum. CONSTITUTION:A primary coil is formed by winding a strand composed of an alloy made of tungusten and molydbenum around an iron mandrel and is annealed. Then a secondary coil is formed by winding this primary coil around an iron secondary mandrel and is then formed into a filament by annealing, cutting, and washing it with an acid to remove the mandrel. This filament is connected to a mount stem and is coated with emitter material and then is built in a fluorescent lamp. As a result, as compared with the conventional lamp, this lamp can stand comparison with it in characteristics and life span. Besides, the weight of the filament can be reduced and resistance to vibration can be improved sharply and then emitter exfoliation can also be reduced.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は電極フィラメン１へを新規な材料で構成した低
圧水銀蒸気放電角に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a low-pressure mercury vapor discharge angle in which the electrode filament 1 is made of a new material.

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

従来、蛍光ランプや殺菌灯などの低圧水銀蒸気放電灯に
おいてはバルブの両端に封装する電極フィラメントをタ
ングステンコイルで構成し、このフィラメン１−にエミ
ッタを被着しである。Conventionally, in low-pressure mercury vapor discharge lamps such as fluorescent lamps and germicidal lamps, the electrode filaments sealed at both ends of the bulb are composed of tungsten coils, and the emitters are attached to the filaments 1-.

しかしながら、タングステンはコイル成形の加工性が悪
く、かつこれに伴なう焼鈍処理も１５００°Ｃ以上の高
温を必要とし、さらに、このため、コイル成形時マンド
レルを高融点であるが高価なモリブデンで構成しかつ成
形後においてこのマンドレルを溶解除去する必要があり
、高価になることは避けられなかった。However, tungsten has poor workability in coil forming, and the accompanying annealing process requires a high temperature of 1500°C or higher.Furthermore, for this reason, the mandrel used for coil forming is made of molybdenum, which has a high melting point but is expensive. It is necessary to dissolve and remove this mandrel after construction and molding, which inevitably increases the cost.

さらに、タングステンフィラメントは比重が大きいため
、その重量が大きくなり、ランプに急激な振動が加わっ
たとき、フィラメントに被着したエミッタが剥落するな
どの欠点があった。Furthermore, since the tungsten filament has a high specific gravity, it is heavy, and when a sudden vibration is applied to the lamp, the emitter attached to the filament may peel off.

〔発明の目的〕[Purpose of the invention]

本発明は加工性が良く、安価に製造でき、しかもエミッ
タ剥落のおそれのない電極フィラメントを有する低圧水
銀蒸気放電灯を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a low-pressure mercury vapor discharge lamp having an electrode filament that has good workability, can be manufactured at low cost, and is free from the risk of emitter peeling off.

〔発明の概要〕[Summary of the invention]

タングステンとモリブデンとの合金で電極フィラメント
を構成したことにより、成形性を良くし、安価な鉄マン
ドレルの使用を可能にし、しかもフィラメントの重量を
軽減して耐振性を向上したものである。By constructing the electrode filament from an alloy of tungsten and molybdenum, it improves formability, allows the use of inexpensive iron mandrels, and also reduces the weight of the filament and improves vibration resistance.

〔発明の実施例〕[Embodiments of the invention]

一般に低圧水銀蒸気放電灯用電極フィラメントは高融点
、低蒸気圧で、水銀との反応性に乏しく、かつ適度の還
元性を有することが要求され、このような金属を二重ま
たは三重コイルに成形して使用される。In general, electrode filaments for low-pressure mercury vapor discharge lamps are required to have a high melting point, low vapor pressure, low reactivity with mercury, and moderate reducibility, and these metals are formed into double or triple coils. used.

このようなフィラメントは通電により短時間に温度上昇
し、これに被着したエミッタを加熱することによって電
子放射を容易にし、低電圧におけるランプ特性を可能に
するものである。When such a filament is energized, its temperature rises in a short period of time, and by heating the emitter attached to the filament, it facilitates electron emission and enables lamp characteristics at low voltages.

そこで、本発明者らは電極フィラメントをタングステン
とモリブデンとの合金で構成したところ、これらの要求
はほとんど満足すべき結果を得た。Therefore, the present inventors constructed an electrode filament from an alloy of tungsten and molybdenum, and obtained results that almost satisfied these requirements.

以下、実施例によって説明する。Examples will be explained below.

タングステンとモリブデンとの合金からなる素線を鉄マ
ンドレルに巻回して一次コイルを形成し、焼鈍したのち
この一次コイルを鉄製二次マンドレルに巻回して二次コ
イルに形成し、焼鈍し、切断して酸洗いしてマンドレル
を除去し、フィラメントに形成した。A strand of wire made of an alloy of tungsten and molybdenum is wound around an iron mandrel to form a primary coil, which is then annealed.The primary coil is then wound around a secondary iron mandrel to form a secondary coil, which is then annealed and cut. The mandrel was removed by pickling and formed into a filament.

このフィラメントをマウントステムに継線し、エミッタ
材料を塗布し、蛍光ランプに組込んだ。This filament was connected to a mount stem, coated with emitter material, and assembled into a fluorescent lamp.

このフィラメントは冷抵抗値が従来の３０Ｗランプ用に
合致するように設計してあり、エミッタ材料の分解、活
性化、もその低始動ガスや水銀の充填も総て従来の方法
に従った。The filament was designed to match the cold resistance value for a conventional 30W lamp, and the decomposition and activation of the emitter material and its filling with low starting gas and mercury all followed conventional methods.

このようにして形成された３０Ｗ定格蛍光ランプは初期
特性が従来のタングステンフィラメン１〜を有する同定
格ランプのそれと大差なく、しかも、本発明ランプを点
灯後その一部を抜き取って電極フィラメントを調査した
ところ、従来ランプの電極フィラメントと同様な外観を
呈していた。また、耐振性も調査したところ、明らかな
向上が認められた。The initial characteristics of the 30W rated fluorescent lamp formed in this way were not significantly different from those of the same rated lamp having the conventional tungsten filament 1~.Furthermore, after lighting the lamp of the present invention, a part of it was removed and the electrode filament was examined. However, it had a similar appearance to the electrode filament of a conventional lamp. We also investigated the vibration resistance and found a clear improvement.

なお、本発明を殺菌灯など他の低圧水銀蒸気放電灯に適
用したところ同様な結果を得た。When the present invention was applied to other low-pressure mercury vapor discharge lamps such as germicidal lamps, similar results were obtained.

また、フィラメントは素線を心線に緩かに巻回してなる
一次コイルをさらに巻回してなるステックコイルにも適
用でき、特に形状の複雑なものに適用して著効がある。Further, the filament can be applied to a stick coil formed by further winding a primary coil formed by winding a strand of wire loosely around a core wire, and is particularly effective when applied to something with a complicated shape.

〔発明の効果〕〔Effect of the invention〕

本発明の低圧水銀蒸気放電灯はタングステンとモリブデ
ンとの合金で電極フィラメントを構成したので、鉄マン
ドルルを用いて安価に製造でき、コイル成形および焼鈍
が容易で、しかも、従来のランプに比較して特性や寿命
において何んら損色がなかった。さらに、フィラメント
重量が同定格のタングステンフィラメントに比較して１
／３〜１／２に軽減でき耐振性が格段に向上し、エミッ
タ剥落も減少した。Since the low-pressure mercury vapor discharge lamp of the present invention has an electrode filament made of an alloy of tungsten and molybdenum, it can be manufactured at low cost using an iron mandrel, and coil forming and annealing are easy. There was no loss in characteristics or lifespan. Furthermore, the filament weight is 1% compared to tungsten filament of the same rating.
The vibration resistance was significantly improved, and emitter peeling was also reduced.

代理人　弁理士　井　上　−男Agent Patent Attorney Inoue - Male

Claims (1)

【特許請求の範囲】[Claims] タングステンとモリブデンとの合金からなる電極フィラ
メントを封装したことを特徴とする低圧水銀蒸気放電灯
。A low-pressure mercury vapor discharge lamp characterized by a sealed electrode filament made of an alloy of tungsten and molybdenum.
JP18994683A 1983-10-13 1983-10-13 Low pressure mercury vapor discharge lamp Pending JPS6081754A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18994683A JPS6081754A (en) 1983-10-13 1983-10-13 Low pressure mercury vapor discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18994683A JPS6081754A (en) 1983-10-13 1983-10-13 Low pressure mercury vapor discharge lamp

Publications (1)

Publication Number Publication Date
JPS6081754A true JPS6081754A (en) 1985-05-09

Family

ID=16249842

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18994683A Pending JPS6081754A (en) 1983-10-13 1983-10-13 Low pressure mercury vapor discharge lamp

Country Status (1)

Country Link
JP (1) JPS6081754A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013215056A1 (en) * 2013-07-31 2015-02-19 Osram Gmbh Low-pressure discharge lamp with discharge vessel and electrode

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013215056A1 (en) * 2013-07-31 2015-02-19 Osram Gmbh Low-pressure discharge lamp with discharge vessel and electrode

Similar Documents

Publication Publication Date Title
US2306925A (en) Electrode and its fabrication
GB465119A (en) Improvements in the manufacture of coiled-coil filaments for incandescent electric lamps and the like
JPS6081754A (en) Low pressure mercury vapor discharge lamp
JP2947958B2 (en) High pressure discharge lamp
US3736458A (en) Filamentary electrode and fabrication thereof
US2945977A (en) Fluorescent glow discharge lamp
US2007926A (en) Light emitting unit
US6017258A (en) Filament attaching method
US3210589A (en) Electric incandescent lamp having filament of partially recrystallized fibrous structure
US4310782A (en) Lamp filament support
US2069713A (en) Electric lamp for producing short wave length radiation
US2312245A (en) Electrode for discharge devices
US2917650A (en) Electrode for discharge tubes
US3989549A (en) Method of making incandescent lamp
GB517536A (en) Improvements in and relating to electric lamps
US2560953A (en) Electric gaseous discharge device electrode
JPH10188886A (en) Fluorescent lamp and lighting device thereof
US2733375A (en) Seal and terminal structure for electric discharge lamp
GB191406439A (en) Improvements in and relating to Filaments for Incandescent Electric Lamps and Methods of Making the same.
JPS61288366A (en) Bent bulb type fluorescent lamp
US2966606A (en) Fluorescent lamp
SU455398A1 (en) Cathode gas discharge lamp
US2349349A (en) Incandescent electric lamp
JP2512012B2 (en) Fluorescent lamp
JP3405672B2 (en) Light bulb type fluorescent lamp