JPS6116459A - U-tube type fluorescent lamp - Google Patents

U-tube type fluorescent lamp

Info

Publication number
JPS6116459A
JPS6116459A JP13184685A JP13184685A JPS6116459A JP S6116459 A JPS6116459 A JP S6116459A JP 13184685 A JP13184685 A JP 13184685A JP 13184685 A JP13184685 A JP 13184685A JP S6116459 A JPS6116459 A JP S6116459A
Authority
JP
Japan
Prior art keywords
diameter
fluorescent lamp
electrode
filament
tube type
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
JP13184685A
Other languages
Japanese (ja)
Inventor
Tadayoshi Kodama
小玉　忠良
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13184685A priority Critical patent/JPS6116459A/en
Publication of JPS6116459A publication Critical patent/JPS6116459A/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
    • H01J61/30—Vessels; Containers
    • H01J61/32—Special longitudinal shape, e.g. for advertising purposes
    • H01J61/325—U-shaped lamps

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE:To make it possible to obtain an U-tube type fluorescent lamp having a long life as equal as an ordinary fluorescent lamp by composing a glass valve so as to have its diameter at only around its electrode larger than the diameter of its other portion. CONSTITUTION:The outside diameter D of a glass valve 2 at its diameter enlarged portion is 25mm., and the outside diameter d of its central portion is 15mm., extending the reaching range of its diameter enlarged portion to the discharge route side at least 5.0mm. from its electrode filament center, and an electrode is formed by adhering alkali metal oxide as electronic radioactive material to a coil which is doubly wound a wire to a tungsten filament. In this case, the filament is connected to a lead wire, however, the distance of its wiring connection is 13mm., and the adhered quantity of the metal oxide was 5.2mg.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明はＵ字形けい光ランプの改良に関する。[Detailed description of the invention] [Field of application of the invention] The present invention relates to improvements in U-shaped fluorescent lamps.

〔発明の背景〕[Background of the invention]

例えば、実開昭５５−８９２５２号公報に記載の如く、
従来、Ｕ字形けい光ランプは、蛍光体を塗布したガラス
の両端に電極を封止し、次にバルブ中央部を支点として
Ｕ字形に加熱形成し、しかる後両端部に口金を取り付け
たり、又は両端からの導入線を一ケ所に集めて、電球口
金を取り付けたりして製造され、電源側ソケットに挿入
して使用されていた。For example, as described in Japanese Utility Model Application Publication No. 55-89252,
Conventionally, U-shaped fluorescent lamps are made by sealing electrodes at both ends of glass coated with phosphor, then heating and forming the bulb into a U-shape using the center of the bulb as a fulcrum, and then attaching caps to both ends, or It was manufactured by gathering lead-in wires from both ends into one place and attaching a light bulb base, and was used by inserting it into a power socket.

また、Ｕ字形けい光ランプは、古くから製造されており
、その用途も広いが、最近とくに電球代替光源として、
小形のＵ字形けい光ランプが盛んに使用されている。In addition, U-shaped fluorescent lamps have been manufactured for a long time and have a wide range of uses, but recently they have been used especially as an alternative light source to light bulbs.
Small U-shaped fluorescent lamps are widely used.

ところで、従来の小型Ｕ字けい光ランプは、第１図に示
す如く、均一な管径ｄのガラスバルブ１が用いられてお
り、管外径としては１５圃〜２０ｍの範囲のものが殆ど
である。このような場合、電極は必然的に小形になるの
で、ランプの、寿命が２．０００〜３，０００時間とな
る。これは電球よていた。By the way, as shown in Fig. 1, conventional small U-shaped fluorescent lamps use a glass bulb 1 with a uniform tube diameter d, and most of the tube outer diameters are in the range of 15 to 20 m. be. In such a case, the electrodes will necessarily be small, resulting in a lamp life of 2,000 to 3,000 hours. This was a light bulb.

〔発明の［１的〕 従って、本発明の目的は通常のけい光ランプと同程度の
長寿命を有するＵ字形けい光ランプを提供することにあ
る。[Object 1 of the Invention] Accordingly, an object of the present invention is to provide a U-shaped fluorescent lamp having a life span comparable to that of a conventional fluorescent lamp.

〔発明の概要〕[Summary of the invention]

上記目的１達成するため、本発明においては、電極部周
辺のみの、ガラスバルブ径をその他の部分のガラスバル
ブ径より径大になるようにＵ字形けい光ランプを構成し
て、この部分に設置する電極をより大形化し、ランプ寿
命を、延長したことを特徴としている。In order to achieve the above objective 1, in the present invention, a U-shaped fluorescent lamp is configured such that the glass bulb diameter only around the electrode part is larger than the glass bulb diameter in other parts, and the U-shaped fluorescent lamp is installed in this part. The lamp's lifespan is extended by making the electrode larger.

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

以下、本発明を実施例にもとづいて詳述する。 Hereinafter, the present invention will be explained in detail based on examples.

第２図は本発明によるＵ字形けい光ランプの外観形状を
示したものである。第２図においてガラスバルブ２の径
大部の外径りは２５ｍｍ、中央部の外径ｄは１５ｍ＋で
あり、径大部の及ぶ範囲は電極フィラメント中心より放
電路側に少なくとも５．０重延びており、電極としては
タングステンフィラメントを２重に巻回したコイルに電
子放射性材料としてアルカリ金属の酸化物を付着せしめ
たものである。この場合、フィラメントは導入線に継線
されるが、この継線間隔は１３ｏｎ＋であり、金属酸化
物の付着量は５　、２　ｍ　ｇであった。これに対し、
同じ大きさのＵ字形けい光ランプに於いて、電極周辺部
も中央部の管径ｄと同じく１５庇とした従来形ランプで
は、上記の２重コイルフィラメントの継線寸法が高々８
　ｍｍ　シかとれない為、これに付着する金属酸化物の
量は３　、０　ｍ　ｇであった。両者のＵ字形１づい光
ランプをチョークコイルに接続して点灯し、ランプ電流
が０．３０Δとなるようにした時、本発明によるランプ
は寿命が６．２００時間であったのに対し、従来形のラ
ンプは２，９００時間と短かった。FIG. 2 shows the external appearance of a U-shaped fluorescent lamp according to the present invention. In FIG. 2, the outer diameter of the large-diameter portion of the glass bulb 2 is 25 mm, the outer diameter d of the central portion is 15 m+, and the area covered by the large-diameter portion extends at least 5.0 mm from the center of the electrode filament toward the discharge path. The electrode is made of a double-wound tungsten filament coil to which an alkali metal oxide as an electron emitting material is attached. In this case, the filament was connected to the lead-in wire, and the connection interval was 13 on+, and the amount of metal oxide deposited was 5.2 mg. On the other hand,
In a U-shaped fluorescent lamp of the same size, in a conventional lamp in which the electrode periphery has the same diameter of 15 mm as the central tube diameter d, the connecting wire dimension of the double coil filament mentioned above is at most 8 mm.
The amount of metal oxide adhering to this was 3.0 mg because it could not be removed. When both U-shaped single-light lamps were connected to a choke coil and turned on so that the lamp current was 0.30Δ, the lamp according to the present invention had a lifespan of 6.200 hours, whereas the conventional lamp had a lifespan of 6.200 hours. The lamp had a short lifespan of 2,900 hours.

〔発明の効果〕〔Effect of the invention〕

このようにランプ寿命の延長に対する効果は極めて大で
ある。又、点灯途中の電極周辺部のガラスバルブ内面の
汚れは、管径が大きい本発明ランプの方が従来形ランプ
よりはるかに少なく外観上の改良も大であった。As described above, the effect on extending lamp life is extremely large. Furthermore, the dirt on the inner surface of the glass bulb around the electrode during lighting was much less in the lamp of the present invention, which has a larger tube diameter, than in the conventional lamp, and the appearance was greatly improved.

尚、本発明は管径が２５１１Ｉ１１以上のＵ字形けい光
ランプについては、電極部周辺部の管径を他部より大き
くしなくても、電極の設計には余裕があるので余り有効
性を発揮しない。In addition, the present invention is very effective for U-shaped fluorescent lamps with a tube diameter of 2511I11 or more because there is a margin in the electrode design even if the tube diameter around the electrode part is not made larger than other parts. do not.

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

第１図は従来のＵ字形けい光ランプの外観図、第２図は
本発明によるＵ字形けい光ランプの外観図である。 １．２・・・ガラスバルブ。 拓１図 消２　図FIG. 1 is an external view of a conventional U-shaped fluorescent lamp, and FIG. 2 is an external view of a U-shaped fluorescent lamp according to the present invention. 1.2...Glass bulb. Taku 1 Figure Erased 2 Figure

Claims (1)

【特許請求の範囲】[Claims] １、電極部周辺領域のガラスバルブ径を残りの領域のガ
ラスバルブ径より大きく構成したことを特徴とするＵ字
形けい光ランプ。1. A U-shaped fluorescent lamp characterized in that the diameter of the glass bulb in the area surrounding the electrode portion is larger than the diameter of the glass bulb in the remaining area.
JP13184685A 1985-06-19 1985-06-19 U-tube type fluorescent lamp Pending JPS6116459A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13184685A JPS6116459A (en) 1985-06-19 1985-06-19 U-tube type fluorescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13184685A JPS6116459A (en) 1985-06-19 1985-06-19 U-tube type fluorescent lamp

Publications (1)

Publication Number Publication Date
JPS6116459A true JPS6116459A (en) 1986-01-24

Family

ID=15067472

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13184685A Pending JPS6116459A (en) 1985-06-19 1985-06-19 U-tube type fluorescent lamp

Country Status (1)

Country Link
JP (1) JPS6116459A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5116552A (en) * 1990-01-31 1992-05-26 Gunze Limited Process for preparation of dried collagen sponge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5116552A (en) * 1990-01-31 1992-05-26 Gunze Limited Process for preparation of dried collagen sponge

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