JPS60189837A - Manufacture of circular fluorescent lamp - Google Patents

Manufacture of circular fluorescent lamp

Info

Publication number
JPS60189837A
JPS60189837A JP4544884A JP4544884A JPS60189837A JP S60189837 A JPS60189837 A JP S60189837A JP 4544884 A JP4544884 A JP 4544884A JP 4544884 A JP4544884 A JP 4544884A JP S60189837 A JPS60189837 A JP S60189837A
Authority
JP
Japan
Prior art keywords
flare
gauge rod
electrode portion
cooling air
glass tube
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
JP4544884A
Other languages
Japanese (ja)
Inventor
Hiroshi Nose
野瀬　廣
Mikio Yamada
幹夫 山田
Yoshio Takano
高野　好雄
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.)
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 JP4544884A priority Critical patent/JPS60189837A/en
Publication of JPS60189837A publication Critical patent/JPS60189837A/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
    • H01J61/24—Means for obtaining or maintaining the desired pressure within the vessel

Landscapes

  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

PURPOSE:To prevent the deformation of a flare and the inferiority of crack and bend etc. in a glass tube by allowing cooling air to blow out from a gauge rod to lower the temperature of the flare in an electrode portion. CONSTITUTION:A bulb in which a glass tube 1 and an electrode portion 2 are sealed is loaded at the location of a gauge rod 3 which is heated by a preheating furnace and an electric furnace in an exhausting device for tube bending. At this time, the cooling air blowing out from a cooling nozzle 4 passes through a hole at the tip of the gauge rod 3 to cool the electrode portion.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は、環形けい光ランプの製造方法に係り、特に管
曲において電極部のフレアーの変形防止に好適な冷却方
法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a method of manufacturing an annular fluorescent lamp, and more particularly to a cooling method suitable for preventing deformation of flare of an electrode portion during tube bending.

（発明の背景〕 従来電極部のフレアーの変形防止として、電極部に対応
する部分の予熱炉のバーナ（または電気炉のと一タ）の
熱量を下げ電極部の温度を下げていた。しかし、この事
によりガラス管の温度も下がるため巻取時にこの部分で
割れたり、また屈折する等の問題があり温度調整がむず
かしかった。(Background of the Invention) Conventionally, in order to prevent flare deformation of the electrode part, the temperature of the electrode part was lowered by lowering the amount of heat of the burner of the preheating furnace (or the heater of the electric furnace) in the part corresponding to the electrode part. This also lowers the temperature of the glass tube, causing problems such as cracking or bending at this portion during winding, making temperature adjustment difficult.

（発明の目的） 本発明の目的はゲージ棒より冷却用エアーを出し電極部
のフレアーの変形を防止することにある。(Object of the Invention) An object of the present invention is to prevent deformation of the flare of the electrode portion by emitting cooling air from the gauge rod.

〔発明の概要〕[Summary of the invention]

電極部のフレアーの変形を防止するためには、この部分
の温度を融点以下を下げなければならない。この冷却方
法として巻取でのバルブの位置を規正するゲージ棒の先
端に穴をあけこの部分より冷却用のエアーを呂し冷却す
る。In order to prevent flare deformation of the electrode portion, the temperature of this portion must be lowered to below the melting point. As a cooling method, a hole is made at the tip of a gauge rod that regulates the position of the valve during winding, and cooling air is introduced through this hole to cool the material.

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

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

ガラス管１と電極部２を封止したバルブは管曲排気機の
予熱炉および電気炉で加熱されたゲージ棒３の位置にロ
ードされる。この時冷却ノズル４から出る冷却エアーが
ゲー二棒先端の穴を通り電極部を冷却する。The bulb with the glass tube 1 and the electrode part 2 sealed is loaded into the position of the gauge rod 3 heated in the preheating furnace and electric furnace of the tube bending exhaust machine. At this time, the cooling air coming out of the cooling nozzle 4 passes through the hole at the tip of the gear rod and cools the electrode section.

〔発明の効果〕〔Effect of the invention〕

本発明によれば電極部のみ冷却されフレアーの変形を防
止することができ、また電極部近辺のガラス管の温度は
下がらないためガラス管のクラックおよび屈折等の不良
防止の効果がある。According to the present invention, only the electrode portion is cooled and deformation of the flare can be prevented, and since the temperature of the glass tube near the electrode portion does not drop, defects such as cracks and bending of the glass tube can be prevented.

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

第１図は冷却ヘッド時のバルブ、ゲージ棒、冷却エアー
の断面図である。 １・・・ガラス管、２・・・電極、３・・・ゲージ棒、
４・・・冷第　１　目FIG. 1 is a sectional view of the valve, gauge rod, and cooling air in the cooling head. 1... Glass tube, 2... Electrode, 3... Gauge rod,
4...Cold 1st eye

Claims (1)

【特許請求の範囲】[Claims] 管曲において電極部のフレアーの変形防止として、ゲー
ジ棒より冷却用エアーを出し電極部のフレアーの温度を
下げることを特徴とする環形けい光ランプの製造方法。A method for manufacturing an annular fluorescent lamp characterized in that cooling air is emitted from a gauge rod to lower the temperature of the flare of the electrode part in order to prevent the flare of the electrode part from deforming during tube bending.
JP4544884A 1984-03-12 1984-03-12 Manufacture of circular fluorescent lamp Pending JPS60189837A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4544884A JPS60189837A (en) 1984-03-12 1984-03-12 Manufacture of circular fluorescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4544884A JPS60189837A (en) 1984-03-12 1984-03-12 Manufacture of circular fluorescent lamp

Publications (1)

Publication Number Publication Date
JPS60189837A true JPS60189837A (en) 1985-09-27

Family

ID=12719618

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4544884A Pending JPS60189837A (en) 1984-03-12 1984-03-12 Manufacture of circular fluorescent lamp

Country Status (1)

Country Link
JP (1) JPS60189837A (en)

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