JPS556725A - Metal vapor discharge lamp - Google Patents

Metal vapor discharge lamp

Info

Publication number
JPS556725A
JPS556725A JP7947978A JP7947978A JPS556725A JP S556725 A JPS556725 A JP S556725A JP 7947978 A JP7947978 A JP 7947978A JP 7947978 A JP7947978 A JP 7947978A JP S556725 A JPS556725 A JP S556725A
Authority
JP
Japan
Prior art keywords
spindle
neck
shaped part
contacts
outer bulb
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
JP7947978A
Other languages
Japanese (ja)
Inventor
Shin Nakazawa
Kazuo Honda
Kotaro Kawamoto
Genichi Hayashi
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
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP7947978A priority Critical patent/JPS556725A/en
Publication of JPS556725A publication Critical patent/JPS556725A/en
Pending legal-status Critical Current

Links

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

PURPOSE: To prevent blacking of the spindle-shaped part by providing a contact of the bimetal switch to the neck of outer bulb.
CONSTITUTION: The contacts of bimetal switch contained in the outer bulb 1 to apply a high voltage pulse to the luminous tube 12 when starting are placed in the neck 4 of the outer bulb. By this way, even though the contact bars 28, 29 produce spatter by a spark when the contacts open, spattering material of the contacts, that is, tungsten is attached only to the inner surface of the neck, and is not done to the spindle-shaped part 1a. Thus blacking of the spindle-shaped part is reduced, resulting in the prevention of a drop of luminous flux.
COPYRIGHT: (C)1980,JPO&Japio
JP7947978A 1978-06-30 1978-06-30 Metal vapor discharge lamp Pending JPS556725A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7947978A JPS556725A (en) 1978-06-30 1978-06-30 Metal vapor discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7947978A JPS556725A (en) 1978-06-30 1978-06-30 Metal vapor discharge lamp

Publications (1)

Publication Number Publication Date
JPS556725A true JPS556725A (en) 1980-01-18

Family

ID=13691023

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7947978A Pending JPS556725A (en) 1978-06-30 1978-06-30 Metal vapor discharge lamp

Country Status (1)

Country Link
JP (1) JPS556725A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112015007120T5 (en) 2015-11-12 2018-07-26 Mitsubishi Electric Corporation Ignition device for an internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112015007120T5 (en) 2015-11-12 2018-07-26 Mitsubishi Electric Corporation Ignition device for an internal combustion engine

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