CN203851342U - Emergency lighting circuit and emergency lighting device - Google Patents
Emergency lighting circuit and emergency lighting device Download PDFInfo
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- CN203851342U CN203851342U CN201420262284.7U CN201420262284U CN203851342U CN 203851342 U CN203851342 U CN 203851342U CN 201420262284 U CN201420262284 U CN 201420262284U CN 203851342 U CN203851342 U CN 203851342U
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Abstract
The utility model discloses an emergency lighting circuit. The emergency lighting circuit includes an auxiliary power supplying power source of which the input end is connected with an alternating current power grid, a control circuit which outputs different control signals when the alternating current power grid operates normally and when faults occur on the alternating current power grid, and a switching switch; the auxiliary power supplying power source stores electric energy in the alternating current power grid and outputs electric energy of which the voltage belongs the range of voltage of rectified alternating current in the alternating current power grid; the control end of the switching switch is connected with the output end of the control circuit; the first input end of the switching switch is connected with the alternating current power grid; the second input end of the switching switch is connected with the output end of the auxiliary power supplying power source; the output end of the switching switch is switched to be connected with the first input end or the second input end under the effect of the control signals; and the output end of the switching switch is connected with the input end of an AC/DC converter in an LED lamp. The emergency lighting circuit provided by the utility model can supply power for LED lamps of various specifications, and therefore, development and research cost can be reduced. The utility model also discloses an emergency lighting device.
Description
Technical field
The utility model belongs to lighting field, relates in particular to emergency lighting circuit and emergency lighting device.
Background technology
In the time that electrical network breaks down, may there is potential safety hazard because losing illumination in some places, in these places, emergency lighting device will be installed.For example in stair aisle and extra exit, emergency lighting device all to be installed.
How in the following ways current emergency lighting: in the time that AC network is normally exported, by AC/DC transducer, the alternating current in AC network is converted to the direct current that meets LED light source power requirement, for LED light source power supply, AC network is auxiliary electric power supply charging simultaneously.In the time that AC network breaks down, the direct current that meets LED light source power requirement is provided by auxiliary electric power supply, be LED light source power supply.
But the demand (specifically refer to voltage, electric current and power) of different size LED light source to electric energy is also different, this causes for the LED light source of different size configures different emergency lighting circuit, causing thus the raising of R&D costs.
Utility model content
In view of this, the purpose of this utility model is to provide emergency lighting circuit that can compatible different size LED light source.Meanwhile, the utility model also provides corresponding emergency lighting device.
For achieving the above object, the utility model provides following technical scheme:
The utility model discloses a kind of emergency lighting circuit, comprising:
Input is connected with AC network, stores the auxiliary electric power supply that electric energy, output voltage in described AC network belongs to the electric energy of the voltage range of alternating current after rectification in described AC network;
In the situation that normally moving and break down, described AC network exports the control circuit of different control signals;
Diverter switch, the control end of described diverter switch is connected with the output of described control circuit, the first input end of described diverter switch is connected with described AC network, the second input of described diverter switch is connected with the output of described auxiliary electric power supply, the output of described diverter switch switches and is connected to described first input end or the second input under the effect of described control signal, and the output of described diverter switch is as the output of described emergency lighting circuit, be connected with the input of the AC/DC transducer in LED light fixture.
Preferably, in above-mentioned emergency lighting circuit, described auxiliary electric power supply comprises charging module, energy-storage module and DC/DC module;
The input of described charging module is connected with described AC network, the output of described charging module is connected with the input of described energy-storage module, the output of described energy-storage module is connected with the input of described DC/DC module, the electric energy of described energy-storage module output is converted to the direct current that voltage belongs to the voltage range of alternating current after rectification in described AC network, the output that the output of described DC/DC module is described auxiliary electric power supply by described DC/DC module.
Preferably, in above-mentioned emergency lighting circuit, described control circuit comprises the first resistance, the second resistance, the 3rd resistance, the first switching tube and second switch pipe;
The first end of described the first resistance is connected to the output of described charging module, and the second end end of described the first resistance is by described the second grounding through resistance;
The control end of described the first switching tube is connected to the common port of described the first resistance and described the second resistance, and the input of described the first switching tube is connected to the output of described energy-storage module, the output head grounding of described the first switching tube by described the 3rd resistance;
The control end of described second switch pipe is connected to the input of described the first switching tube, and the input of described second switch pipe is connected to the output of described energy-storage module, and the output of described second switch pipe is as the output of described control circuit.
Preferably, in above-mentioned emergency lighting circuit, described diverter switch is dpdt double-pole double-throw (DPDT) type relay;
The coil of described relay is connected on as the control end of described diverter switch between the output and ground of described second switch pipe;
In first group of transfer contact of described relay, the first moving contact is connected to the first input end of described AC/DC transducer, and the first normally-closed contact is connected to the live wire of described AC network, and the first normally opened contact is connected to the positive output end of described auxiliary electric power supply;
In second group of transfer contact of described relay, the second moving contact is connected to the second input of described AC/DC transducer, and the second normally-closed contact is connected to the zero line of described AC network, and the second normally opened contact is connected to the negative output terminal of described auxiliary electric power supply.
Preferably, above-mentioned emergency lighting circuit also comprises: be connected the test circuit according to test instruction output low level signal to the control end of described the first switching tube with described control circuit.
Preferably, in above-mentioned emergency lighting circuit, described DC/DC module is booster converter, anti exciting converter or buck-boost converter.
Preferably, in above-mentioned emergency lighting circuit, described DC/DC module quits work in the time that described AC network is normally moved.
Preferably, in above-mentioned emergency lighting circuit, described control circuit is in the time that the output voltage of described DC/DC module is reduced in preset range, and the output switching of controlling described diverter switch is connected to described first input end.
The invention also discloses a kind of emergency lighting device, comprise above-mentioned any one emergency lighting circuit and LED light fixture;
Described LED light fixture comprises AC/DC transducer and LED light source;
In described emergency lighting circuit, the output of diverter switch is connected with the input of described AC/DC transducer, and described LED light source is connected with the output of described AC/DC transducer.
Preferably, above-mentioned emergency lighting device also comprises second switch, and in described emergency lighting circuit, the first input end of diverter switch is connected with described AC network by described second switch.
As can be seen here, the beneficial effects of the utility model are: the disclosed emergency lighting circuit of the utility model, in the time that breaking down, AC network provides input voltage by auxiliary electric power supply for the AC/DC transducer in LED light fixture, because the input voltage (namely line voltage) of AC/DC transducer is relatively-stationary, therefore as long as the output voltage of auxiliary electric power supply meets line voltage requirement, just can serve as emergency power supply for the LED light fixture of all size in this electrical network, avoid the LED light fixture that is respectively all size to develop different emergency lighting circuit, thereby reduction R&D costs.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the disclosed a kind of emergency lighting circuit of the utility model;
Fig. 2 is the structural representation of the disclosed a kind of auxiliary electric power supply of the utility model;
Fig. 3 is the circuit diagram of the disclosed a kind of control circuit of the utility model;
Fig. 4 is the circuit diagram of the disclosed a kind of control circuit of the utility model and test circuit;
Fig. 5 is the structural representation of the disclosed a kind of emergency lighting device of the utility model;
Fig. 6 is the structural representation of the disclosed another kind of emergency lighting device of the utility model.
Embodiment
For making object, technical scheme and the advantage of the utility model embodiment clearer, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model discloses a kind of emergency lighting circuit that can compatible different size LED light source.
Referring to Fig. 1, Fig. 1 is the structural representation of the disclosed a kind of emergency lighting circuit of the utility model.This emergency lighting circuit comprises auxiliary electric power supply 100, control circuit 200 and diverter switch 300.
Wherein:
The input of auxiliary electric power supply 100 is connected with AC network, can store the electric energy in AC network and export electric energy, and the voltage of the electric energy that auxiliary electric power supply 100 is exported belongs to the voltage range of alternating current after rectification in AC network.
The in the situation that control circuit 200 normally moving and breaks down in AC network, export different control signals.
The control end of diverter switch 300 is connected with the output of control circuit 200, the first input end of diverter switch 300 is connected with AC network, the second input of diverter switch 300 is connected with the output of auxiliary electric power supply 100, under the effect of the control signal that the output of diverter switch 300 is exported at control circuit 200, switch and be connected to first input end or the second input, the output of diverter switch 300 as the output of emergency lighting circuit, be connected not shown LED light fixture in Fig. 1 with the input of the AC/DC transducer in LED light fixture.
Below the running of the circuit of emergency lighting shown in Fig. 1 is described.
In the time that AC network is normally moved, control circuit 200 is exported the first control signal, be connected with first input end with the output of controlling diverter switch 300, now by AC network directly for LED light fixture is powered.In this process, auxiliary electric power supply 100 receives the electric energy of AC network and stores.
Break down cannot continue to power time in AC network, control circuit 200 is exported the second control signal, be connected with the second input with the output of controlling diverter switch 300, the electric energy that now auxiliary electric power supply 100 is stored self is changed, output voltage belongs to the electric energy of alternating current in the AC network voltage range after rectification, namely output voltage belongs to the electric energy in the input voltage range of AC/DC transducer in LED light fixture, after further being changed, powers into the LED light source in LED light fixture by AC/DC transducer.Here it should be noted that, when the input voltage of AC/DC transducer specified input voltage positive and negative 10% between while fluctuating, AC/DC transducer still can stable operation.Taking the AC network of 220V as example, when the output voltage of auxiliary electric power supply 100 is between 198V to 242V time, the AC/DC transducer in LED light fixture can stable operation, ensures that LED light source is normally luminous.
The disclosed emergency lighting circuit of the utility model, in the time that AC network is normally moved, control circuit 200 is controlled diverter switch 300 and is connected the AC/DC transducer in AC network and LED light fixture, by AC network directly for LED light fixture is powered, in the time that AC network breaks down, control circuit 200 is controlled diverter switch 300 and is connected the AC/DC transducer in auxiliary electric power supply 100 and LED light fixture, for AC/DC transducer provides input voltage, be LED light source power supply by AC/DC transducer afterwards by auxiliary electric power supply 100.The disclosed emergency lighting circuit of the utility model, in the time that breaking down, AC network provides input voltage by auxiliary electric power supply 100 for the AC/DC transducer in LED light fixture, because the input voltage (namely line voltage) of AC/DC transducer is relatively-stationary, therefore as long as the output voltage of auxiliary electric power supply 100 meets line voltage requirement, just can serve as emergency power supply for the LED light fixture of all size in this electrical network, avoid the LED light fixture that is respectively all size to develop different emergency lighting circuit, thereby reduce R&D costs.
In the circuit of emergency lighting shown in Fig. 1, the structure of auxiliary electric power supply 100 can be as shown in Figure 2, comprises charging module 101, energy-storage module 102 and DC/DC module 103.
Wherein, the input of charging module 101 can be connected with AC network, the output of charging module 101 is connected with the input of energy-storage module 102, the output of energy-storage module 102 is connected with the input of DC/DC module 103, and the output of DC/DC module 103 is the output of auxiliary electric power supply 100, is connected with the second input of diverter switch 300.In the time that AC network is normally moved, charging module 101 receives the electric energy in AC network, and will after electric energy conversion, be stored in energy-storage module 102, the electric energy of storage in energy-storage module 102 is converted to direct current by DC/DC module 103, this galvanic voltage belongs to alternating current in the AC network voltage range after rectification, and namely this galvanic voltage belongs in the input voltage range of AC/DC transducer in LED light fixture.
In enforcement, charging module 101 and DC/DC module 103 adopt existing circuit or chip.Energy-storage module 102 adopts rechargeable battery.
In addition, in the circuit of emergency lighting shown in Fig. 1, control circuit 200 can be made up of discrete component.Fig. 3 shows a kind of structure of control circuit.Comprise: the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the first switching tube Q1 and second switch pipe Q2.
Wherein:
The first end of the first resistance R 1 is connected to the output (representing with a in figure) of charging module 101, and the second end of the first resistance R 1 is by the second resistance R 2 ground connection.
The control end of the first switching tube Q1 is connected to the common port of the first resistance R 1 and the second resistance R 2, the input of the first switching tube Q1 is connected to the output (representing with b in figure) of energy-storage module 102, the output head grounding of the first switching tube Q1 by the 3rd resistance R 3.
The control end of second switch pipe Q2 is connected to the input of the first switching tube Q1, and the input of second switch pipe Q2 is connected to the output of energy-storage module 102, and the output of second switch pipe Q2 is as the output of control circuit 200.
In the time that AC network is normally moved, in auxiliary charging power supply 100, the output of charging module 101 and energy-storage module 102 has Voltage-output, and now the first switching tube Q1 conducting, second switch pipe Q2 turn-off, the output output low level signal of second switch pipe Q2.In the time that AC network breaks down, no longer output voltage signal of the output of charging module 101 in auxiliary charging power supply 100, and the output of energy-storage module 102 has Voltage-output, now the first switching tube Q1 turn-offs, and second switch pipe Q2 conducting, the output output high level signal of second switch pipe Q2.
In enforcement, the first switching tube Q1 and second switch pipe Q2 can adopt NPN type triode, or N channel field-effect pipe.
Based on the control circuit shown in Fig. 3, diverter switch 300 can adopt dpdt double-pole double-throw (DPDT) type relay to realize.Concrete:
The coil of relay K M1 is connected between the output and ground of second switch pipe Q2, as shown in Figure 3 as the control end of diverter switch 300.
In first group of transfer contact of relay K M1, the first moving contact is connected to the first input end of AC/DC transducer in LED light fixture, the first normally-closed contact is connected to the live wire of AC network, the first normally opened contact is connected to the positive output end of auxiliary electric power supply 100, in the time that auxiliary electric power supply 100 adopts structure shown in Fig. 2, the first normally opened contact is connected to the positive output end of DC/DC module 103.
In second group of transfer contact of relay K M1, the second moving contact is connected to the second input of AC/DC transducer in LED light fixture, the second normally-closed contact is connected to the zero line of AC network, the second normally opened contact is connected to the negative output terminal of auxiliary electric power supply 100, in the time that auxiliary electric power supply 100 adopts structure shown in Fig. 2, the second normally opened contact is connected to the negative output terminal of DC/DC module 103.
In the time that AC network is normally moved, the output output low level signal of second switch pipe Q2, now in the coil of relay K M1, do not have electric current to flow through, in first group of transfer contact, the first moving contact is connected with the first normally-closed contact, in second group of transfer contact, the second moving contact is connected with the second normally-closed contact, in this case by AC network directly for LED light fixture is powered.In the time that AC network breaks down, the output output high level signal of second switch pipe Q2, now in the coil of relay K M1, there is electric current to flow through, in first group of transfer contact, the first moving contact switches to the first normally opened contact and is connected, in second group of transfer contact, the second moving contact switches to the second normally opened contact and is connected, and is powered for LED light fixture in this case by auxiliary electric power supply 100.
In enforcement, can also in emergency lighting circuit, test circuit be set, this test circuit is connected with control circuit, according to the control end of test instruction output low level signal to the first switching tube Q1.Operating personnel can provide test instruction, by test circuit analog AC electrical network fault, so that whether checking emergency lighting circuit can be LED light fixture normal power supply in the time that AC network breaks down, prevent the phenomenon of emergency lighting circuit malfunction in the time of the real fault of AC network.
Test circuit can adopt various structures to realize, and in conjunction with Fig. 4, a kind of structure is wherein described here.Test circuit comprises that the control end of the first K switch 1, the first switching tube Q1 is by the first K switch 1 ground connection.Operating personnel press after the first K switch 1, and the control end ground connection of the first switching tube Q1, namely loads a low level signal at the control end of the first switching tube Q1, thereby while simulating AC network fault, are carried in the signal of telecommunication of the control end of the first switching tube Q1.If pressed after the first K switch 1 operating personnel, the LED light fixture being connected with this emergency lighting circuit is still lit, and determines that emergency lighting circuit can normally move.
In the disclosed emergency lighting circuit of the utility model, the voltage of the energy-storage module 102 in auxiliary electric power supply 100 is lower with respect to line voltage, therefore DC/DC module 103 preferably adopts the change-over circuit with boost function, for example: booster converter (boost converter), anti exciting converter (flyback converter) and buck-boost converter (buckboost converter).
In the use procedure of emergency lighting circuit, in the time that AC network is normally moved, the DC/DC module 103 that can control in auxiliary electric power supply 100 quits work.Its reason is: in the time that AC network is normally moved, it is that LED light fixture is powered that diverter switch 300 switches to by AC network under the control of control circuit 200, in this case, although DC/DC module 103 is in Light Condition, but still there is no-load loss, therefore for energy savings, preferably control DC/DC module 103 and quit work.
In the time that AC network recovers normal from malfunction, if directly controlling that diverter switch 300 switches to by AC network is that LED light fixture is powered, may, due to the higher electric arc that causes of the output voltage of DC/DC module 103, cause the damage of diverter switch 300.Therefore, as preferred version, in the time that AC network recovers normal from malfunction, first control DC/DC module 103 and quit work, so that the output voltage of DC/DC module 103 is reduced in preset range, controlling afterwards that diverter switch 300 switches to by AC network is that LED light fixture is powered again.This preset range can not cause the safe voltage scope of electric arc while being the disconnection of diverter switch 300 nominals.
The utility model also discloses a kind of emergency lighting device, and its structure as shown in Figure 5.Comprise: emergency lighting circuit 10 and LED light fixture 20.
Wherein, emergency lighting circuit 10 is aforementioned disclosed any one emergency lighting circuit of the utility model, comprises auxiliary electric power supply 100, control circuit 200 and diverter switch 300.The concrete structure of emergency lighting circuit 10 refers to above and describes, and no longer repeats here.
LED light fixture 20 comprises AC/DC transducer 21 and LED light source 22.
In emergency lighting circuit 10, the output of diverter switch 300 is connected with the input of AC/DC transducer 21, and LED light source 22 is connected with the output of AC/DC transducer 21.AC/DC transducer 21 is changed the electric energy receiving (deriving from AC network or auxiliary electric power supply 100), thereby powers for LED light source 22.
In the disclosed emergency lighting device of the utility model, emergency lighting circuit 10 provides input voltage for the AC/DC transducer 21 in LED light fixture 20, after by AC/DC transducer 21, the electric energy receiving being changed afterwards, powers into LED light source 22.The disclosed emergency lighting device of the utility model, in the time that LED light fixture 20 damages, can replace with any one LED light fixture that is applicable to current electrical network, has good durability.
As preferred version, the utility model further arranges second switch K2 in emergency lighting device, as shown in Figure 6.
In emergency lighting circuit 10, the first input end of diverter switch 300 is connected with AC network by second switch K2.This second switch K2 is subject to manual control, can be key type switch, can be also audio-switch.
Complete after the installation of emergency lighting device shown in Fig. 6, second switch K2 is series between AC network and the first input end of diverter switch 300, this has just determined only in the time that AC network is normally moved, user just can open or close LED light source 22 by second switch K2, in the time that AC network breaks down, auxiliary electric power supply 100 can be lighted LED light source 22, plays the effect of emergency lighting, and now LED light source 22 is not subject to the control of second switch K2.
In addition, in the disclosed emergency lighting device of the utility model, the LED light source 22 in LED light fixture 20 can be a LED lamp pearl, also can be formed by multiple LED lamp pearl series connection.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. an emergency lighting circuit, is characterized in that, comprising:
Input is connected with AC network, stores the auxiliary electric power supply that electric energy, output voltage in described AC network belongs to the electric energy of the voltage range of alternating current after rectification in described AC network;
In the situation that normally moving and break down, described AC network exports the control circuit of different control signals;
Diverter switch, the control end of described diverter switch is connected with the output of described control circuit, the first input end of described diverter switch is connected with described AC network, the second input of described diverter switch is connected with the output of described auxiliary electric power supply, the output of described diverter switch switches and is connected to described first input end or the second input under the effect of described control signal, and the output of described diverter switch is as the output of described emergency lighting circuit, be connected with the input of the AC/DC transducer in LED light fixture.
2. emergency lighting circuit according to claim 1, is characterized in that, described auxiliary electric power supply comprises charging module, energy-storage module and DC/DC module;
The input of described charging module is connected with described AC network, the output of described charging module is connected with the input of described energy-storage module, the output of described energy-storage module is connected with the input of described DC/DC module, the electric energy of described energy-storage module output is converted to the direct current that voltage belongs to the voltage range of alternating current after rectification in described AC network, the output that the output of described DC/DC module is described auxiliary electric power supply by described DC/DC module.
3. emergency lighting circuit according to claim 2, is characterized in that, described control circuit comprises the first resistance, the second resistance, the 3rd resistance, the first switching tube and second switch pipe;
The first end of described the first resistance is connected to the output of described charging module, and the second end end of described the first resistance is by described the second grounding through resistance;
The control end of described the first switching tube is connected to the common port of described the first resistance and described the second resistance, and the input of described the first switching tube is connected to the output of described energy-storage module, the output head grounding of described the first switching tube by described the 3rd resistance;
The control end of described second switch pipe is connected to the input of described the first switching tube, and the input of described second switch pipe is connected to the output of described energy-storage module, and the output of described second switch pipe is as the output of described control circuit.
4. emergency lighting circuit according to claim 3, is characterized in that, described diverter switch is dpdt double-pole double-throw (DPDT) type relay;
The coil of described relay is connected on as the control end of described diverter switch between the output and ground of described second switch pipe;
In first group of transfer contact of described relay, the first moving contact is connected to the first input end of described AC/DC transducer, and the first normally-closed contact is connected to the live wire of described AC network, and the first normally opened contact is connected to the positive output end of described auxiliary electric power supply;
In second group of transfer contact of described relay, the second moving contact is connected to the second input of described AC/DC transducer, and the second normally-closed contact is connected to the zero line of described AC network, and the second normally opened contact is connected to the negative output terminal of described auxiliary electric power supply.
5. emergency lighting circuit according to claim 4, is characterized in that, also comprises with described control circuit and being connected, the test circuit according to test instruction output low level signal to the control end of described the first switching tube.
6. according to the emergency lighting circuit described in any one in claim 2 to 5, it is characterized in that, described DC/DC module is booster converter, anti exciting converter or buck-boost converter.
7. emergency lighting circuit according to claim 6, is characterized in that, described DC/DC module quits work in the time that described AC network is normally moved.
8. emergency lighting circuit according to claim 7, is characterized in that, described control circuit is in the time that the output voltage of described DC/DC module is reduced in preset range, and the output switching of controlling described diverter switch is connected to described first input end.
9. an emergency lighting device, is characterized in that, comprises emergency lighting circuit and LED light fixture as described in any one in claim 1 to 8;
Described LED light fixture comprises AC/DC transducer and LED light source;
In described emergency lighting circuit, the output of diverter switch is connected with the input of described AC/DC transducer, and described LED light source is connected with the output of described AC/DC transducer.
10. emergency lighting device according to claim 9, is characterized in that, also comprises second switch, and in described emergency lighting circuit, the first input end of diverter switch is connected with described AC network by described second switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420262284.7U CN203851342U (en) | 2014-05-21 | 2014-05-21 | Emergency lighting circuit and emergency lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420262284.7U CN203851342U (en) | 2014-05-21 | 2014-05-21 | Emergency lighting circuit and emergency lighting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203851342U true CN203851342U (en) | 2014-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420262284.7U Expired - Lifetime CN203851342U (en) | 2014-05-21 | 2014-05-21 | Emergency lighting circuit and emergency lighting device |
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| Country | Link |
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| CN (1) | CN203851342U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333953A (en) * | 2014-10-16 | 2015-02-04 | 刘胜泉 | Intelligent lamp circuit |
| CN106385751A (en) * | 2016-11-11 | 2017-02-08 | 北海和思科技有限公司 | Street lamp illumination control system |
-
2014
- 2014-05-21 CN CN201420262284.7U patent/CN203851342U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333953A (en) * | 2014-10-16 | 2015-02-04 | 刘胜泉 | Intelligent lamp circuit |
| CN106385751A (en) * | 2016-11-11 | 2017-02-08 | 北海和思科技有限公司 | Street lamp illumination control system |
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