JPS5273575A - Lighting device for emergency and for incandescent lamp - Google Patents
Lighting device for emergency and for incandescent lampInfo
- Publication number
- JPS5273575A JPS5273575A JP50149816A JP14981675A JPS5273575A JP S5273575 A JPS5273575 A JP S5273575A JP 50149816 A JP50149816 A JP 50149816A JP 14981675 A JP14981675 A JP 14981675A JP S5273575 A JPS5273575 A JP S5273575A
- Authority
- JP
- Japan
- Prior art keywords
- emergency
- lighting device
- incandescent lamp
- power source
- lighting
- 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 provide a lighting device for emergency. When commercial power source is cut off, multiple incadenscent lamps, whose voltage rating are different, are switched by turn and lighted. Drop of luminous flux in the last stage of emergency lighting can be prevented by con converting power of battery power source efficiently.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50149816A JPS5273575A (en) | 1975-12-15 | 1975-12-15 | Lighting device for emergency and for incandescent lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50149816A JPS5273575A (en) | 1975-12-15 | 1975-12-15 | Lighting device for emergency and for incandescent lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5273575A true JPS5273575A (en) | 1977-06-20 |
Family
ID=15483320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50149816A Pending JPS5273575A (en) | 1975-12-15 | 1975-12-15 | Lighting device for emergency and for incandescent lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5273575A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4410835A (en) * | 1981-04-01 | 1983-10-18 | Zabroski Stanley E | Utility emergency lamp and solid state switching and battery charging circuit therefor |
US4862038A (en) * | 1987-06-08 | 1989-08-29 | Morten John F | Automatic relamping system |
US4985661A (en) * | 1989-09-27 | 1991-01-15 | Lin Yuang Chang | Uninterrupted desk lamp |
-
1975
- 1975-12-15 JP JP50149816A patent/JPS5273575A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4410835A (en) * | 1981-04-01 | 1983-10-18 | Zabroski Stanley E | Utility emergency lamp and solid state switching and battery charging circuit therefor |
US4862038A (en) * | 1987-06-08 | 1989-08-29 | Morten John F | Automatic relamping system |
US4985661A (en) * | 1989-09-27 | 1991-01-15 | Lin Yuang Chang | Uninterrupted desk lamp |
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