JPS643983A - Emergency lighting device - Google Patents
Emergency lighting deviceInfo
- Publication number
- JPS643983A JPS643983A JP62160233A JP16023387A JPS643983A JP S643983 A JPS643983 A JP S643983A JP 62160233 A JP62160233 A JP 62160233A JP 16023387 A JP16023387 A JP 16023387A JP S643983 A JPS643983 A JP S643983A
- Authority
- JP
- Japan
- Prior art keywords
- lamp
- transistor
- power
- storage battery
- luminous flux
- 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
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
PURPOSE:To obtain light required for long hours by the use of a storage battery with small capacity, by controlling a continuity pulse width of a lighting control transistor so that constant lamp power is supplied to an incandescent lamp and that a luminous flux of the lamp is made to become a prescribed value. CONSTITUTION:A lighting control transistor Q1 is interposed between a storage battery BT and an incandescent lamp LP, and the transistor Q1 is held on an off state by a power-off detection circuit DT at the normal time of a commercial power source AC, and the off state of the transistor Q1 is released at the power-off time of the commercial power source AC. A continuity pulse width of the transistor Q1 is controlled by a controlling circuit CT so that constant lamp power is supplied to the incandescent lamp LP and that a luminous flux of the lamp LP is made to become a prescribed value. Accordingly the lighting and putting out control of the lamp LP and the luminous flux control of the lamp LP can be performed by using only a single lighting control transistor Q1. Hence, the lamp LP can be lighted with required light for long hours by using a storage battery BT with small capacity.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62160233A JPS643983A (en) | 1987-06-25 | 1987-06-25 | Emergency lighting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62160233A JPS643983A (en) | 1987-06-25 | 1987-06-25 | Emergency lighting device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS643983A true JPS643983A (en) | 1989-01-09 |
Family
ID=15710584
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62160233A Pending JPS643983A (en) | 1987-06-25 | 1987-06-25 | Emergency lighting device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS643983A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5015919A (en) * | 1989-07-19 | 1991-05-14 | Led Corporation N.V. | Emergency lighting system provided with a fluorescent tube |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS577088A (en) * | 1980-06-14 | 1982-01-14 | Matsushita Electric Works Ltd | Emergency illuminator |
JPS57151198A (en) * | 1981-03-13 | 1982-09-18 | Tokyo Shibaura Electric Co | Lighting controller for halogen lamp |
-
1987
- 1987-06-25 JP JP62160233A patent/JPS643983A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS577088A (en) * | 1980-06-14 | 1982-01-14 | Matsushita Electric Works Ltd | Emergency illuminator |
JPS57151198A (en) * | 1981-03-13 | 1982-09-18 | Tokyo Shibaura Electric Co | Lighting controller for halogen lamp |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5015919A (en) * | 1989-07-19 | 1991-05-14 | Led Corporation N.V. | Emergency lighting system provided with a fluorescent tube |
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