JPS55128247A - Metal vapor discharge lamp - Google Patents

Metal vapor discharge lamp

Info

Publication number
JPS55128247A
JPS55128247A JP3655079A JP3655079A JPS55128247A JP S55128247 A JPS55128247 A JP S55128247A JP 3655079 A JP3655079 A JP 3655079A JP 3655079 A JP3655079 A JP 3655079A JP S55128247 A JPS55128247 A JP S55128247A
Authority
JP
Japan
Prior art keywords
thermoresponding
bimetal
operating unit
discharge lamp
filament
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.)
Granted
Application number
JP3655079A
Other languages
Japanese (ja)
Other versions
JPS624821B2 (en
Inventor
Masahiro Dobashi
Masato Saito
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 JP3655079A priority Critical patent/JPS55128247A/en
Publication of JPS55128247A publication Critical patent/JPS55128247A/en
Publication of JPS624821B2 publication Critical patent/JPS624821B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

PURPOSE: To protect a stabilizer of the discharge lamp from burn-out failure, by arranging an operating unit of the second thermoresponding element underneath an operating unit of the first thermoresponding element and permitting the second thermoresponding element to operate to partially fuse breaking the circuit in an outer tube when the first thermoresponding element is not in operation.
CONSTITUTION: A bimetal 6b of an operating unit of the second thermoresponding element is arranged below in the vertical position relation with a bimetal 6a of an operating unit of the first thermoresponding element and operated surely later than an operation of the bimetal 6a which is easily applied a heat from the filament by the action of convection and easily heated. Accordingly, a connecting lead 21 of a movable contact 15' of the bimetal 6a is welded then later the bimetal 6b works to release the state of contact between a movable contact 15 and a fixed connecting rod 14 and to cause a discharge between locations at a different potential like the lead 21, filament 7, etc. in an outer tube 1, finally to fuse those parts. In this way, an electric current conduction is stopped capable of surely preventing the stabilizer from burn-out failure.
COPYRIGHT: (C)1980,JPO&Japio
JP3655079A 1979-03-28 1979-03-28 Metal vapor discharge lamp Granted JPS55128247A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3655079A JPS55128247A (en) 1979-03-28 1979-03-28 Metal vapor discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3655079A JPS55128247A (en) 1979-03-28 1979-03-28 Metal vapor discharge lamp

Publications (2)

Publication Number Publication Date
JPS55128247A true JPS55128247A (en) 1980-10-03
JPS624821B2 JPS624821B2 (en) 1987-02-02

Family

ID=12472865

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3655079A Granted JPS55128247A (en) 1979-03-28 1979-03-28 Metal vapor discharge lamp

Country Status (1)

Country Link
JP (1) JPS55128247A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55141058A (en) * 1979-04-20 1980-11-04 Hitachi Ltd Discharge lamp lighting device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08251789A (en) * 1995-03-08 1996-09-27 Yasuyuki Nakagawa Housing cover for electric wire and cable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55141058A (en) * 1979-04-20 1980-11-04 Hitachi Ltd Discharge lamp lighting device

Also Published As

Publication number Publication date
JPS624821B2 (en) 1987-02-02

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