JPS5485577A - Electric discharge lamp - Google Patents

Electric discharge lamp

Info

Publication number
JPS5485577A
JPS5485577A JP15384477A JP15384477A JPS5485577A JP S5485577 A JPS5485577 A JP S5485577A JP 15384477 A JP15384477 A JP 15384477A JP 15384477 A JP15384477 A JP 15384477A JP S5485577 A JPS5485577 A JP S5485577A
Authority
JP
Japan
Prior art keywords
sealing
foils
electrode
electrodes
sealing foils
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
JP15384477A
Other languages
Japanese (ja)
Inventor
Noboru Nakamura
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electronics 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 Matsushita Electronics Corp filed Critical Matsushita Electronics Corp
Priority to JP15384477A priority Critical patent/JPS5485577A/en
Publication of JPS5485577A publication Critical patent/JPS5485577A/en
Pending legal-status Critical Current

Links

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE: To provide an electric discharge lamp, in which a hollow space is formed respectively around a junction between electrode and sealing foil, whereby bulb sealing operation is facilitated, and it is enabled to prevent breakage of sealing foils and occurrence of cracks at the sealing portions.
CONSTITUTION: At opposite end of glass container 1 made of quarz glass, a pair of rod-like tungsten electrodes 2 opposed to each other and having a diameter of about 2 mm are connected respectively to one end of sealing foils 3 of molybdenum having a thickness of about 25μ. Lead wire 7 is connected to the other end of respective sealing foils 3. A hollow space 5 is formed around respective junction 4 between electrode 2 and sealing foil 3, and a portion of electrode 2 is held tightly in place at neck portion 6 of a substantially spherical glass container. When heating the neck portions 6 and adjusting the distance between opposite electrodes 2, 2 to a predetermined value by shifting the position of electrodes 2, there is no fear of causing breakage of sealing foils 3, since hollow spaces 6, 6 are formed and quarz glass is not fused to the sealing foils.
COPYRIGHT: (C)1979,JPO&Japio
JP15384477A 1977-12-20 1977-12-20 Electric discharge lamp Pending JPS5485577A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15384477A JPS5485577A (en) 1977-12-20 1977-12-20 Electric discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15384477A JPS5485577A (en) 1977-12-20 1977-12-20 Electric discharge lamp

Publications (1)

Publication Number Publication Date
JPS5485577A true JPS5485577A (en) 1979-07-07

Family

ID=15571324

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15384477A Pending JPS5485577A (en) 1977-12-20 1977-12-20 Electric discharge lamp

Country Status (1)

Country Link
JP (1) JPS5485577A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0818804A2 (en) * 1996-07-10 1998-01-14 Koito Manufacturing Co., Ltd ARC tube for discharge lamp device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0818804A2 (en) * 1996-07-10 1998-01-14 Koito Manufacturing Co., Ltd ARC tube for discharge lamp device
EP0818804A3 (en) * 1996-07-10 1998-03-18 Koito Manufacturing Co., Ltd ARC tube for discharge lamp device
US5877591A (en) * 1996-07-10 1999-03-02 Koito Manufacturing Co., Ltd. Arc tube for discharge lamp device

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