CN104540276A - Emergency lighting system - Google Patents
Emergency lighting system Download PDFInfo
- Publication number
- CN104540276A CN104540276A CN201410790169.1A CN201410790169A CN104540276A CN 104540276 A CN104540276 A CN 104540276A CN 201410790169 A CN201410790169 A CN 201410790169A CN 104540276 A CN104540276 A CN 104540276A
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- CN
- China
- Prior art keywords
- power supply
- relay
- led
- drive circuit
- led drive
- 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.)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The invention provides an emergency lighting system. The system comprises a power supply, an LED driving circuit and an LED lamp, wherein the LED driving circuit is connected between the power supply and the LED lamp and is used for driving the LED lamp under the normal power supply condition, batteries are connected to the two ends of the LED driving circuit, a relay is connected between the corresponding battery and the input end of the LED driving circuit, the two ends of a coil of the relay are connected to the power supply, and the relay is used for disconnecting the batteries with the LED driving circuit when the power supply supplies power normally and connecting the batteries with the LED driving circuit when the power supply does not supply power. Connection of the batteries and the LED lamp is automatically achieved in an outage through the relay, automatic emergency lighting is achieved, a user does not need to search for an emergency switch after the outage, and emergency state converting time is shortened. The voltage of the LED driving circuit adopted is stable, damage to the LED lamp is avoided, the LED driving circuit can drive one or more LEDs to emit light, requirements for brightness and area coverage of emergency lighting can be met, and the system is suitable for emergency fire fighting of an illuminating system of a school, a factory and a family.
Description
Technical field
The invention belongs to LED application, especially relate to a kind of emergency lighting system.
Background technology
Existing lighting apparatus all accesses in civil power; when there is power-off or tripping operation; lighting apparatus loses power supply; field of illumination enters dark state; factory building, warehouse, school or family are made troubles; when especially causing danger, dark surrounds hinders normal escape, and therefore emergency light should be installed to tackle emergency situations in above-mentioned place.Existing emergency lighting system needs user to find emergency button after a loss of power, only finds emergency button just can open emergency lighting system, but it is comparatively large to find emergency button difficulty in dark, therefore needs a kind of illuminator that automatically can be converted to emergency rating.LED has that volume is little, power consumption is low, long service life, high brightness, low in calories, cold light source, environmental protection and the advantage such as sturdy and durable, consider and the demands such as the fail safe of emergency light, long-life design a kind of emergency lighting system.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of emergency lighting system, automatically can be converted to emergency rating and provide the emergency lighting of a period of time, for user provides the time of the emergency processing after power-off, can be applicable in fire-fighting or domestic lighting after lighting circuit power-off.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of emergency lighting system, comprise power supply, LED drive circuit and LED, LED drive circuit is connected between power supply and LED, its for when normal power supply for LED provides driving, the two ends of LED drive circuit are also connected with battery, relay is connected with between battery and the input of LED drive circuit, coil two end of relay is connected to power supply, relay is used for disconnecting battery and LED drive circuit when power supply normal power supply, and is communicated with battery and LED drive circuit when power cut-off.
Wherein, relay adopts normally closed relay, and its two contact connects output and the battery of LED drive circuit respectively, is connected with transformer rectifier circuit between power supply and the coil of relay.
Or, relay adopts conversion hysteria relay, it comprises a moving contact and the second fixed contact of the first fixed contact of being positioned on the upside of moving contact and downside, moving contact connects the input of LED drive circuit, and the second fixed contact connects battery, and the first fixed contact sky connects, and during power supply normal power supply, moving contact and the first fixed contact close, and during power cut-off, moving contact and the second fixed contact close.
Further, switch is provided with between power supply and LED drive circuit.
Further, multiple LED is connected in parallel in LED drive circuit.
Wherein, battery adopts dry cell or rechargeable battery.
Wherein, LED drive circuit comprises driving chip, and driving chip adopts the MT7201 of SOT89-5 encapsulation.
The advantage that the present invention has and good effect are: automatically connect battery and LED after achieving power cut-off by relay, achieve automatic emergency lighting, user, without the need to finding emergency button after a loss of power, shortens the change-over time of emergency rating.The LED drive circuit voltage stabilization that the present invention adopts, can not cause damage to LED, and single or plurality of LEDs can be driven luminous, can meet brightness and the regional extent requirement of emergency lighting, is applicable to the emergent fire-fighting of school, factory building and Household illumination system.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
Fig. 2 is the circuit connection diagram of one embodiment of the invention
In figure: 1-power supply, 2-LED drive circuit, 3-LED lamp, 4-battery, 5-relay, 6-switch, 7-driving chip
Embodiment
Below in conjunction with accompanying drawing, specific embodiments of the invention are elaborated.
As shown in Figure 1, a kind of emergency lighting system, comprise power supply 1, LED drive circuit 2 and LED 3, LED drive circuit 2 is connected between power supply 1 and LED 3, its for when normal power supply for LED 3 provides driving, the two ends of LED drive circuit 2 are also connected with battery 4, relay 5 is connected with between the input of battery 4 and LED drive circuit 2, coil two end of relay 5 is connected to power supply 1, relay 5 for disconnecting battery 4 and LED drive circuit 2 when power supply normal power supply, and is communicated with battery 4 and LED drive circuit 2 when power cut-off.
As shown in the circuit diagram of Fig. 2, when power supply 1 normal power supply, its by LED drive circuit 2 for LED 3 provides electric power, LED 3 can normal luminous, and when power supply 1 power-off, two contactings of relay 5 close, battery 4 and LED drive circuit 2 conducting, now, battery 4 provides electric power by LED drive circuit 2 for LED 3, realizes emergency lighting.
In order to realize relay to the conducting of battery and LED drive circuit and disconnection effect, in one embodiment of the present of invention, relay 5 adopts normally closed relay, its two contact connects output and the battery of LED drive circuit 2 respectively, is connected with transformer rectifier circuit between the coil of power supply 1 and relay 5.Normally closed relay is when power supply normal power supply, and its two contact is off state, and when losing the power supply of power supply 1, two contacts then close, turn-on battery 4 and LED drive circuit 2.
In another embodiment, relay 5 adopts conversion hysteria relay, it comprises a moving contact and the second fixed contact of the first fixed contact of being positioned on the upside of moving contact and downside, moving contact connects the input of LED drive circuit, and the second fixed contact connects battery, and the first fixed contact sky connects, and during power supply normal power supply, moving contact and the first fixed contact close, and during power supply 1 power-off, moving contact and the second fixed contact close.Achieve the object of line transfer like this, when namely realizing power supply 1 power-off, relay 5 turn-on battery 4 and LED drive circuit 2.
In order to avoid LED 3 by day time continuous illumination cause electricity to waste, in one embodiment of the present of invention, between power supply 1 and LED drive circuit 2, be provided with switch 6.Switch 6 can realize the effect of Artificial Control LED 3, and time namely to night, switch 6 can close according to lighting demand by user, turn-on power 1 and LED drive circuit 2, and during daytime, then can cut-off switch 6, stops powering to LED 3, saves electricity.
In order to expand the area in emergency lighting region, in one embodiment of the present of invention, multiple LED 3 is connected in parallel in LED drive circuit 2.Can realize like this arranging multiple LED 3 in emergency lighting region, and battery 4 provides electric power for multiple LED 3, not only increases illumination intensity, also expands illumination zone.
In the present invention, battery 4 can adopt dry cell or rechargeable battery.As long as electric power can be provided for LED 3.
In one embodiment of the present of invention, LED drive circuit 2 comprises driving chip 7, and driving chip 7 adopts the MT7201 of SOT89-5 encapsulation.It can drive one or many series LEDs, can drive the LED up to 32W.
Fig. 2 is the circuit connection diagram of one embodiment of the present of invention, wherein, E is battery, and J is relay, and B is transformer, when switch S B closes, power supply after electric capacity C1 step-down and diode VD1 ~ VD4 rectification, through diode VD5 connect driving chip, LED drive circuit can driving LED lamp bright, voltage stabilizing didoe ZD1 plays the effect of voltage stabilizing, prevents LED from burning out.Power supply after rectification connects the coil two ends of relay through transformation, and the contact of relay is connected between the input of driving chip and battery, there is shown the two states of relay contact.
Above one embodiment of the present of invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (7)
1. an emergency lighting system, it is characterized in that: comprise power supply (1), LED drive circuit (2) and LED (3), LED drive circuit (2) is connected between power supply (1) and LED (3), it is for being that LED (3) provides driving when power supply (1) normal power supply, the two ends of LED drive circuit (2) are also connected with battery (4), relay (5) is connected with between the input of battery (4) and LED drive circuit (2), coil two end of relay (5) is connected to power supply (1), relay (5) is for disconnecting battery (4) and LED drive circuit (2) when power supply (1) normal power supply, and be communicated with battery (4) and LED drive circuit (2) when power supply (1) power-off.
2. emergency lighting system according to claim 1, it is characterized in that: relay (5) adopts normally closed relay, its two contact connects output and the battery (4) of LED drive circuit (2) respectively, is connected with transformer rectifier circuit between the coil of power supply (1) and relay (5).
3. emergency lighting system according to claim 1, it is characterized in that: relay (5) adopts conversion hysteria relay, it comprises a moving contact and the second fixed contact of the first fixed contact of being positioned on the upside of moving contact and downside, moving contact connects the input of LED drive circuit, second fixed contact connects battery, first fixed contact sky connects, and during power supply (1) normal power supply, moving contact and the first fixed contact close, during power supply (1) power-off, moving contact and the second fixed contact close.
4. emergency lighting system according to claim 1, is characterized in that: be provided with switch (6) between power supply (1) and LED drive circuit (2).
5. emergency lighting system according to claim 1, is characterized in that: multiple LED (3) is connected in parallel in LED drive circuit (2).
6. emergency lighting system according to claim 1, is characterized in that: battery (4) adopts dry cell or rechargeable battery.
7. emergency lighting system according to claim 1, is characterized in that: LED drive circuit (2) comprises driving chip (7), and driving chip (7) adopts the MT7201 of SOT89-5 encapsulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410790169.1A CN104540276A (en) | 2014-12-17 | 2014-12-17 | Emergency lighting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410790169.1A CN104540276A (en) | 2014-12-17 | 2014-12-17 | Emergency lighting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104540276A true CN104540276A (en) | 2015-04-22 |
Family
ID=52855691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410790169.1A Pending CN104540276A (en) | 2014-12-17 | 2014-12-17 | Emergency lighting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104540276A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105979666A (en) * | 2016-08-02 | 2016-09-28 | 惠勇 | Self-adaptive LED drive power supply |
-
2014
- 2014-12-17 CN CN201410790169.1A patent/CN104540276A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105979666A (en) * | 2016-08-02 | 2016-09-28 | 惠勇 | Self-adaptive LED drive power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150422 |
|
| WD01 | Invention patent application deemed withdrawn after publication |