JPS556725A - Metal vapor discharge lamp - Google Patents
Metal vapor discharge lampInfo
- 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
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
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)
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 |
-
1978
- 1978-06-30 JP JP7947978A patent/JPS556725A/en active Pending
Cited By (1)
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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