JPS5499375A - Halogen electric bulb - Google Patents
Halogen electric bulbInfo
- Publication number
- JPS5499375A JPS5499375A JP495878A JP495878A JPS5499375A JP S5499375 A JPS5499375 A JP S5499375A JP 495878 A JP495878 A JP 495878A JP 495878 A JP495878 A JP 495878A JP S5499375 A JPS5499375 A JP S5499375A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- filament
- bulb
- diameter
- shortening
- 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
Abstract
PURPOSE: To prevent the shortening of life owing to the irregular distribution of temperature and to dissolve the reduction of efficiency by defining the diameter of elemental wire for single coil filament at more than 0.1 mm and the relation between the diameter of wire and distance between coiled wire.
CONSTITUTION: In halogen electric bulb in which single coil filament 32 of tangsten wire is contained in bulb 31 and both ends of it are connected with terminal fittings 35 through metal foil conductor 34 sealed in crushed sealing portion 33 of both ends of bulb 31, the said filament 32 is formed to have the relation of 2.0≤P/D≤3.5 where D is diameter of elemental wire 36 and P is distance between elemental wire 36. According to this method, by defining P/D as above-cited, it is possible to prevent the shortening of life owing to the irregular distribution of temperature in filament 32 while maintaining sufficient efficiency for actual usage.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP495878A JPS5499375A (en) | 1978-01-20 | 1978-01-20 | Halogen electric bulb |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP495878A JPS5499375A (en) | 1978-01-20 | 1978-01-20 | Halogen electric bulb |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5499375A true JPS5499375A (en) | 1979-08-06 |
Family
ID=11598081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP495878A Pending JPS5499375A (en) | 1978-01-20 | 1978-01-20 | Halogen electric bulb |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5499375A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58164807A (en) * | 1982-03-26 | 1983-09-29 | 東芝ライテック株式会社 | Signal lamp |
JPH01206558A (en) * | 1988-02-15 | 1989-08-18 | Toshiba Corp | Halogen electric bulb |
-
1978
- 1978-01-20 JP JP495878A patent/JPS5499375A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58164807A (en) * | 1982-03-26 | 1983-09-29 | 東芝ライテック株式会社 | Signal lamp |
JPH01206558A (en) * | 1988-02-15 | 1989-08-18 | Toshiba Corp | Halogen electric bulb |
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