JPS54124577A - Discharge lamp - Google Patents
Discharge lampInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5595257U (en) * | 1978-12-26 | 1980-07-02 |
-
1978
- 1978-03-22 JP JP3274778A patent/JPS54124577A/en active Pending
Cited By (2)
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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