JPS54124577A - Discharge lamp - Google Patents

Discharge lamp

Info

Publication number
JPS54124577A
JPS54124577A JP3274778A JP3274778A JPS54124577A JP S54124577 A JPS54124577 A JP S54124577A JP 3274778 A JP3274778 A JP 3274778A JP 3274778 A JP3274778 A JP 3274778A JP S54124577 A JPS54124577 A JP S54124577A
Authority
JP
Japan
Prior art keywords
bulb
coil
axis
wall
main electrode
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
JP3274778A
Other languages
Japanese (ja)
Inventor
Yasuki Mori
Kenichi Shimizu
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 JP3274778A priority Critical patent/JPS54124577A/en
Publication of JPS54124577A publication Critical patent/JPS54124577A/en
Pending legal-status Critical Current

Links

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE: To prevent the heating of the wall of a bulb and reduce the blackening and cracking, by forming an end of the bulb asymmetrically with regard to the axis of a main electrode and providing a start assisting coil in the major-volume part of the bulb.
CONSTITUTION: The end of the luminous bulb 10 is shaped asymmetrically with regard to the axis 0-0 of the bulb so that the left space P1 is larger than a right space P2 in respect to Fig. The axis 12 of the main electrode 11 is made coincident with the axis 0-0 of the bulb. The start assisting coil 13 is provided in the larger space P1. Thus, the coil 13 is hardly located near the wall of the bulb even if the coil is placed away from the axis of the bulb. The distance between the start assisting coil 13 and the main electrode 11 can be made large or the coil 13 can be greatly displaced or tilted to prevent the heating of the bulb wall.
COPYRIGHT: (C)1979,JPO&Japio
JP3274778A 1978-03-22 1978-03-22 Discharge lamp Pending JPS54124577A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3274778A JPS54124577A (en) 1978-03-22 1978-03-22 Discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3274778A JPS54124577A (en) 1978-03-22 1978-03-22 Discharge lamp

Publications (1)

Publication Number Publication Date
JPS54124577A true JPS54124577A (en) 1979-09-27

Family

ID=12367433

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3274778A Pending JPS54124577A (en) 1978-03-22 1978-03-22 Discharge lamp

Country Status (1)

Country Link
JP (1) JPS54124577A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5595257U (en) * 1978-12-26 1980-07-02

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5595257U (en) * 1978-12-26 1980-07-02
JPS5819813Y2 (en) * 1978-12-26 1983-04-23 岩崎電気株式会社 Discharge lamp with preheating electrode for starting

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