JPS5469268A - Emergency lamp system - Google Patents
Emergency lamp systemInfo
- Publication number
- JPS5469268A JPS5469268A JP13709877A JP13709877A JPS5469268A JP S5469268 A JPS5469268 A JP S5469268A JP 13709877 A JP13709877 A JP 13709877A JP 13709877 A JP13709877 A JP 13709877A JP S5469268 A JPS5469268 A JP S5469268A
- Authority
- JP
- Japan
- Prior art keywords
- brightness
- section
- lamp
- level
- emergency
- 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 provide an emergency lamp system, which is designed to vary the brightness of an emergency lamp in accordance with the adaptability curve of human eyes and to fix the brightness of the lamp at a level conforming to the brightness of external light, whereby it is enabled to make an efficent use of a limited amout of electric power, without adversely affecting its performance for guiding people at the time of emergency.
CONSTITUTION: When interruption of power supply at power source section 7 is detected by detecting section 2, emergnecy power source section 1 is connected in the circuit via control contact 3. At the same time, a control signal corresponding to the adaptability curve of human eyes is supplied from adaptability controlling section 10 to brightness controlling section 4, so that lamp 5 of emergency lamp lighing section 6 is adjusted at a level along the adaptability curve through control of its driving current. At the time when human eyes are adapted to the circumferential brightness, a reference signal preset in fixed-level determining section 11 is supplied to the brightness controlling section 4 to keep the brightness of the lamp 5 at a fixed level. Here, the level of brightness of lamp 5, determined by the output signal of external light detecting signal generating section 12, is controlled in accordance with external light X.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13709877A JPS5469268A (en) | 1977-11-14 | 1977-11-14 | Emergency lamp system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13709877A JPS5469268A (en) | 1977-11-14 | 1977-11-14 | Emergency lamp system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5469268A true JPS5469268A (en) | 1979-06-04 |
Family
ID=15190806
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13709877A Pending JPS5469268A (en) | 1977-11-14 | 1977-11-14 | Emergency lamp system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5469268A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2548111A (en) * | 2016-03-07 | 2017-09-13 | Mackwell Electronics Ltd | Emergency lighting system and method |
JP2018073578A (en) * | 2016-10-27 | 2018-05-10 | コイト電工株式会社 | Lighting device |
AT16477U1 (en) * | 2015-04-30 | 2019-10-15 | Zumtobel Lighting Gmbh | Luminaire and method for operating the lamp |
-
1977
- 1977-11-14 JP JP13709877A patent/JPS5469268A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT16477U1 (en) * | 2015-04-30 | 2019-10-15 | Zumtobel Lighting Gmbh | Luminaire and method for operating the lamp |
GB2548111A (en) * | 2016-03-07 | 2017-09-13 | Mackwell Electronics Ltd | Emergency lighting system and method |
JP2018073578A (en) * | 2016-10-27 | 2018-05-10 | コイト電工株式会社 | Lighting device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ATE137077T1 (en) | INTERIOR LIGHTING CONTROL SYSTEM | |
JPS5469268A (en) | Emergency lamp system | |
JPS56109327A (en) | Flash device with dimmer | |
JPS643631A (en) | Liquid crystal display device | |
JPS57210556A (en) | Power supply for ion pump | |
JPS54146356A (en) | Apparatus for automatically controlling luminous intensity of head light | |
JPS5764271A (en) | Copying machine | |
JPS5457344A (en) | Control device for building | |
JPS6449996A (en) | Alarm device | |
JPS5398050A (en) | Power supply | |
JPS52120582A (en) | Lighting device for discharge lamp | |
DE3371733D1 (en) | Equipment for the automatic switching and control of room illumination | |
JPS57191577A (en) | Illumination device of radar | |
ATE19381T1 (en) | SUPPLY SYSTEM FOR BICYCLE LAMPS. | |
JPS57121289A (en) | Power source device for laser | |
JPS5740276A (en) | Exposure stabilizing device | |
JPS56101218A (en) | Temperature controller | |
JPS57211982A (en) | Self-excited inverter device | |
JPS6448083A (en) | Abnormal lighting controller for heater | |
JPS572050A (en) | Safety device of copying machine | |
JPS5360259A (en) | Detector | |
JPS53131447A (en) | Control of power invertor in use for power trfnsmission | |
JPS52118976A (en) | Adjusting and lighting device for discharge lamp | |
JPS53147954A (en) | Power consumption controller | |
JPS5731011A (en) | Temperature control device |