JPS59103268A - Discharge lamp - Google Patents

Discharge lamp

Info

Publication number
JPS59103268A
JPS59103268A JP21352182A JP21352182A JPS59103268A JP S59103268 A JPS59103268 A JP S59103268A JP 21352182 A JP21352182 A JP 21352182A JP 21352182 A JP21352182 A JP 21352182A JP S59103268 A JPS59103268 A JP S59103268A
Authority
JP
Japan
Prior art keywords
end plate
internal
bulb
inner tube
discharge lamp
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
JP21352182A
Other languages
Japanese (ja)
Inventor
Hiroji Yamamoto
山本 広二
Takao Takeda
武田 隆夫
Hitoshi Yamazaki
均 山崎
Shizuo Nakano
中野 志津雄
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP21352182A priority Critical patent/JPS59103268A/en
Publication of JPS59103268A publication Critical patent/JPS59103268A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/02Details
    • H01J61/30Vessels; Containers
    • H01J61/32Special longitudinal shape, e.g. for advertising purposes
    • H01J61/327"Compact"-lamps, i.e. lamps having a folded discharge path

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE:To prevent generation of cracks of external bulb due to the heating process in the manufacturing process by providing a stress absorbing area to an internal bulb and the end plate fixing area. CONSTITUTION:A stress absorbing part 8, which is bent integrally in the form of reversed U-letter and coaxially to the internal bulb fixing part 10 in the vicinity of circumference of said internal bulb fixing part 10 where the internal bulbs 51, 52 are fixed by the frit 99, is formed at the end plate 3 in such a manner as being protruded to the external bulb 1. Accordingly, a stress generated by the difference of the rates in temperature rise between the end plate 3 and internal bulbs 51, 52 when they are heated is absorbed by the stress absorbing part 8 in the exhausting process on the occasion of manufacturing a discharge lamp. Therefore, stress applied on the fixing part of internal bulbs 51, 52 and end plate 3 is drastically reduced as compared with that when only a flat end plate 3 is used.

Description

【発明の詳細な説明】 この発明は放電灯に関するもので、詳細には一般照明用
光源として使用される小型化した放電灯に関するもので
ある。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a discharge lamp, and more particularly to a compact discharge lamp used as a light source for general illumination.

近年、螢光ランプを本来の発光効率が高いという長所を
損うことな(小型化し、従来発光効率の低い白熱電球の
使用を余儀なくされていた分野にも使用可能な光源にす
るための研究、すなわち白熱電球の代替となり得る螢光
ランプの開発が種々進められている。
In recent years, efforts have been made to develop fluorescent lamps into smaller light sources that can be used in fields that previously had to use incandescent lamps with low luminous efficiency, without sacrificing their original advantage of high luminous efficiency. That is, various efforts are being made to develop fluorescent lamps that can replace incandescent light bulbs.

これらの中で特に有望なものとして、放電空間を形成す
る外管パルプ内に2個の電極と、この電極間に屈曲した
放電路全形成するための内管を設けた構造の螢光ランプ
が提案されている。第1図はこの種の螢光ランプの代表
的な一例を示したもので1図において、(11は開放端
(2)ヲ有するガラス製の外管パルプであり、この外管
バルブ(11は開放端(2)に気密に固着されている端
板(3)によって内部を気密空間に形成している。(4
1)、 (42) )末端板(3)に植設され、外部に
導通している2個の電極。
Among these, one that is particularly promising is a fluorescent lamp with a structure in which two electrodes are provided within the outer pulp pulp that forms the discharge space, and an inner tube that forms the entire curved discharge path between these electrodes. Proposed. Figure 1 shows a typical example of this type of fluorescent lamp. In Figure 1, (11 is a glass outer bulb pulp having an open end (2); The interior is formed into an airtight space by the end plate (3) which is airtightly fixed to the open end (2). (4
1), (42)) Two electrodes implanted in the terminal plate (3) and connected to the outside.

(51) 、 (52)は一端が電極(41) 、 (
42)を気密に内包し、他端が外管バルブ(II内に開
放して、内面に螢光体層(61)、 (62) 2有1
−る屈曲した2個のガラスチューブよりなる内管(51
) 、 (52)である。外管バルブ(1)及び端板(
3)によって限定されている気密空間には、少量の希ガ
スと水銀が封入されている。
(51) and (52) have electrodes at one end (41) and (
42) is airtightly enclosed, the other end is open into the outer tube bulb (II), and the inner surface has phosphor layers (61), (62) 2 and 1
- Inner tube (51) consisting of two bent glass tubes
), (52). Outer tube valve (1) and end plate (
A small amount of rare gas and mercury are sealed in the airtight space defined by 3).

このような構造の放電灯は電極(41) 、 (42)
間に形成される放電路が屈曲した内管(51) 、 (
52)内を通って形成されるので1発光効率を左右する
放電路の長さ1ま外管バルブ(1)全小型化しても充分
な長さに維持できるため、高い発光効率を維持したまま
白熱電球に類似した形状にすることが可能であり。
A discharge lamp with such a structure has electrodes (41) and (42).
An inner tube (51) with a bent discharge path formed between the inner tubes (51), (
52) Since it is formed through the inner tube, the length of the discharge path that affects the luminous efficiency is 1. The length of the discharge path, which affects the luminous efficiency. It is possible to make it into a shape similar to an incandescent light bulb.

白熱電球に代替できる螢光ランプとして有望なものと期
待されている。
It is expected to be a promising fluorescent lamp that can replace incandescent light bulbs.

しかしながら、上記のような構造の螢光ランプにおいて
は、端板(3)は電極(41) 、 (42)及び内管
(51)、 (52) k支持する機能をも必要とする
ため。
However, in the fluorescent lamp having the above structure, the end plate (3) also needs to have the function of supporting the electrodes (41), (42) and the inner tubes (51), (52).

必然的に平板状でしかもかなり大きなものにせざるを得
す、従って大型のガラス製ボタンステムあるいは内管(
51)、 (52)のガラスと近似した熱膨張係数を有
するセラミック板等を使用しているが。
Inevitably, it has to be flat and quite large, so a large glass button stem or inner tube (
51) and (52), a ceramic plate or the like having a coefficient of thermal expansion similar to that of glass is used.

ラップ製造の排気工程において、それらの部材を加熱し
脱ガスしつつ排気する際に、内管(51)。
In the exhaust process of wrap manufacturing, the inner tube (51) is used when exhausting those members while heating and degassing them.

(52)と端板(3)の温度上昇速度の差により、固着
部に応力が加わり内管(51) 、 (52)が割れる
という事故が起りやすいという欠点を有している。
Due to the difference in the rate of temperature rise between (52) and the end plate (3), stress is applied to the fixed portions, causing the inner tubes (51) and (52) to crack, which is a disadvantage.

本発明は上記の欠点を解消し、内管の割れを防止した放
電灯を提供することを目的とするものである。
SUMMARY OF THE INVENTION An object of the present invention is to provide a discharge lamp which eliminates the above-mentioned drawbacks and prevents the inner tube from cracking.

以下1本発明の実施例を第2図によって説明する。An embodiment of the present invention will be described below with reference to FIG.

第2図は本発明の放電灯の一例全示したもので。FIG. 2 shows an example of the discharge lamp of the present invention.

(1)は頂部全ドーム状にし、底部に開放端(2)を有
するガラス製の外管バルブ、(31はこの外管パルプf
ilの開放端(2)にフリット(9)により気密に固着
されている金属製の端板、  (41)、(42)はこ
の端板(3)に電気的に絶縁された状態で埋設され外部
に導通している2個の電極、  (51)、(52)は
一端が上記端板(31にフリット(9)により固着され
、電極(41)、 (42) ffi気密に内包し、他
端が上記外管バルブ(1)内に開放して、内面に螢光体
層(61)、 ((52) −q有する屈曲された2本
のガラスチューブより成る内管であり。
(1) is a glass outer bulb having a dome-like top and an open end (2) at the bottom; (31 is this outer bulb pulp f);
Metal end plates (41) and (42), which are airtightly fixed to the open end (2) of the il by a frit (9), are buried in this end plate (3) in an electrically insulated state. The two electrodes (51) and (52) that are electrically conductive to the outside are fixed at one end to the end plate (31) by a frit (9), and the electrodes (41) and (42) are airtightly enclosed, and the other The inner tube consists of two bent glass tubes whose ends open into the outer tube bulb (1) and have phosphor layers (61), ((52) -q on the inner surface).

本発明はかかる構成のものにおいて、端板t31に。The present invention is directed to the end plate t31 in such a structure.

内管(51) 、 (52)がフリット(9)により固
着されている内管(’51) 、 (52)の断面と同
形状の部分(以後内管固着部顛と称T)の外周に近接し
、かつその内管固着部Ql)と同心的に逆U字状に一体
的に屈曲された応力吸収部(8)全外管パルプ(1)内
に突出したものである。なお(7)は端板(3)周縁部
に形成され、外管パルプ(11の開放端(21と対応し
た環状のU字溝で形成されたガラス管受部である。
The inner tubes (51) and (52) are fixed by the frit (9) on the outer periphery of the part having the same shape as the cross section of the inner tubes ('51) and (52) (hereinafter referred to as the inner tube fixed part T). A stress absorbing portion (8) protruding into the entire outer tube pulp (1) which is adjacent to and concentrically bent in an inverted U-shape with the inner tube fixed portion Ql). Note that (7) is a glass tube receiving portion formed on the peripheral edge of the end plate (3) and formed with an annular U-shaped groove corresponding to the open end (21) of the outer tube pulp (11).

また、外管バルブ(11は端板(3)のガラス管受部(
7)内において、低融点ガラスフリット(9)によって
気密に固着したものである。この場合内管(51)。
In addition, the outer tube bulb (11 is the glass tube receiving part of the end plate (3)
7), which is airtightly fixed by a low melting point glass frit (9). In this case the inner tube (51).

(52)は0℃〜300℃の範囲の平均熱膨張係数が9
5X10   cm/cm・℃のソーダ石灰ガラスを使
′用されており、また端板(3)はクローム全約13%
含有する鉄−クローム合金を使用している。さらに外管
パルプ(1)と端板(3)によって限定されている空間
は端板(3)K取付けられている排気管全通して内部を
真空にした後、少量のアルゴン及び水銀が封入されてい
る。
(52) has an average thermal expansion coefficient of 9 in the range of 0°C to 300°C.
5 x 10 cm/cm・℃ soda lime glass is used, and the end plate (3) is made of approximately 13% chrome.
An iron-chromium alloy containing iron is used. Furthermore, the space defined by the outer tube pulp (1) and the end plate (3) is evacuated through the entire exhaust pipe attached to the end plate (3) K, and then a small amount of argon and mercury is sealed. ing.

上記実施例のような構成の放電灯においては。In a discharge lamp configured as in the above embodiment.

これ全製造する際の排気工程において、加熱した時の端
板(3)と内管(51) 、 (52)の温度上昇速度
の差によって発生する応力が端板(3)に形成されてい
る応力吸収部(8)で吸収されるため、内管(51)、
 (52)と端板(3)の固着部分に加わる応力は単に
平板状の端板(31ヲ使用したものに比べて著しく減少
する。
During the exhaust process during the entire manufacturing process, stress is generated in the end plate (3) due to the difference in temperature rise rate between the end plate (3) and the inner tubes (51) and (52) when heated. Since the stress is absorbed by the stress absorbing part (8), the inner tube (51),
The stress applied to the fixed portion of the end plate (52) and the end plate (3) is significantly reduced compared to the case where a flat end plate (31) is simply used.

上記応力吸収部(8)の形状は、端板(3)の肉厚及び
大きさによって適宜決定しなければならないが。
The shape of the stress absorbing portion (8) must be appropriately determined depending on the thickness and size of the end plate (3).

基本的には内管固着部αQになるべ(近い位置に。Basically, it should be the inner tube fixed part αQ (near the position).

その固着部0Qと同心的に断面が逆U字状になるように
形成することが望ましい。
It is desirable to form the cross section to be in an inverted U-shape concentrically with the fixed portion 0Q.

また、端板(3)と内管(51) 、 (52)は当然
のことながら熱膨張係数が近似したものでなければなら
ないが、フリット(9)の融着性、端板(3)の加工性
、及び価格の面から内管(51)、 (52) ’にソ
ーダ石灰ガラス、端板(3)ラフローム含有量約13%
の鉄−クローム合金としたときが最適である。
In addition, the end plate (3) and the inner tubes (51) and (52) must of course have similar coefficients of thermal expansion, but the fusion properties of the frit (9), In terms of processability and cost, the inner tubes (51) and (52) are made of soda lime glass, and the end plate (3) has a rough room content of approximately 13%.
It is best to use iron-chromium alloy.

以上述べたように本発明によれば、内管が金属板に固着
された内管固着部の外周にその固着部と同心的で、かつ
断面がUまたは逆U字状金成すように金属板を一体的に
折曲し形成された応力吸収部を設けたので、この応力吸
収部が内管と端板の固着部分に加わる応力全緩和1−る
ため、製造工程での加熱による外管パルプの割れの発生
全防止する効果を奏する。
As described above, according to the present invention, a metal plate is formed on the outer periphery of the inner tube fixed portion where the inner tube is fixed to the metal plate, and is concentric with the fixed portion and has a U-shaped or inverted U-shaped cross section. Since the stress absorbing part is formed by integrally bending the inner tube and the end plate, this stress absorbing part completely relieves the stress applied to the fixed part of the inner tube and the end plate. It has the effect of completely preventing the occurrence of cracks.

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

第1図シま従来の放電灯の部分断面図、第2図はこの発
明の一実施例を示す放電灯の部分断面図である。 図中、(1)はガラス管、(3)は端板、  (51)
、(52)は内管、(8)は応力吸収部、(9)はガラ
スフリッ)、QOiは内管固着部。 なお各図中同一符号は同一または相当部分を示す。 代理人 葛野信− 第1図 第2図
FIG. 1 is a partial sectional view of a conventional discharge lamp, and FIG. 2 is a partial sectional view of a discharge lamp showing an embodiment of the present invention. In the figure, (1) is a glass tube, (3) is an end plate, (51)
, (52) is the inner tube, (8) is the stress absorbing part, (9) is the glass frit), and QOi is the inner tube fixing part. Note that the same reference numerals in each figure indicate the same or corresponding parts. Agent Makoto Kuzuno - Figure 1 Figure 2

Claims (1)

【特許請求の範囲】 (11外管の開口部を金属板で閉塞し、かつこの金属板
に内管の少な(とも一端部全固着したものにおいて、こ
の金属板には上記内管固着部の外周と同心的でかつ断面
がUまたは逆U字状會成すようにその金属板を一体的に
屈曲させた応力吸収部を形成したことを特徴とする放電
灯。 (2)内管の材質をソーダ石灰ガラスとしたとき金属板
の材質は鉄−クローム合金としたこと全特徴とする特許
請求の範囲第1項記載の放電灯。
[Scope of Claims] (11) In the case where the opening of the outer tube is closed with a metal plate, and the inner tube is completely fixed to this metal plate, the metal plate has the inner tube fixed part. A discharge lamp characterized by forming a stress absorbing part that is concentric with the outer periphery and whose metal plate is integrally bent so that the cross section forms a U or inverted U shape. (2) The material of the inner tube 2. The discharge lamp according to claim 1, wherein the metal plate is made of an iron-chromium alloy when the metal plate is made of soda-lime glass.
JP21352182A 1982-12-06 1982-12-06 Discharge lamp Pending JPS59103268A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21352182A JPS59103268A (en) 1982-12-06 1982-12-06 Discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21352182A JPS59103268A (en) 1982-12-06 1982-12-06 Discharge lamp

Publications (1)

Publication Number Publication Date
JPS59103268A true JPS59103268A (en) 1984-06-14

Family

ID=16640561

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21352182A Pending JPS59103268A (en) 1982-12-06 1982-12-06 Discharge lamp

Country Status (1)

Country Link
JP (1) JPS59103268A (en)

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