CN220235013U - Emergency circuit and lamp - Google Patents
Emergency circuit and lamp Download PDFInfo
- Publication number
- CN220235013U CN220235013U CN202321724958.6U CN202321724958U CN220235013U CN 220235013 U CN220235013 U CN 220235013U CN 202321724958 U CN202321724958 U CN 202321724958U CN 220235013 U CN220235013 U CN 220235013U
- Authority
- CN
- China
- Prior art keywords
- diode
- triode
- capacitor
- resistor
- electrode
- 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.)
- Active
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 65
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 35
- 229910052744 lithium Inorganic materials 0.000 claims description 35
- 238000001514 detection method Methods 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 12
- 230000000087 stabilizing effect Effects 0.000 claims description 11
- 230000006698 induction Effects 0.000 description 6
- 238000005286 illumination Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Abstract
The utility model discloses an emergency circuit and a lamp with the emergency circuit, wherein the emergency circuit comprises a power input end; the passive PFC module comprises a first diode, a second diode, a third diode, a first capacitor and a second capacitor, wherein the first capacitor is connected between the first diode and a power input end, the second diode is connected with the second capacitor, one end of the third diode is connected between the first diode and the first capacitor, and the other end of the third diode is connected between the second diode and the first capacitor; the switch module is respectively connected with the first capacitor, the second diode and the power input end and is used for controlling the switch of the emergency circuit according to the voltage input by the power input end; and the light module is connected with the switch module. The power factor of the circuit can be effectively improved.
Description
Technical Field
The utility model relates to the technical field of emergency circuits, in particular to an emergency circuit and a lamp.
Background
An emergency lamp is a device installed inside a building to provide illumination and route guidance for escape of a person in an emergency, and is generally capable of continuous illumination for a period of time in the event that mains supply is disconnected. In the related art, the power factor of the emergency lamp is low, so that larger voltage drop and power loss are caused on the power transmission line of the emergency lamp, and the emergency lamp is easy to damage.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides an emergency circuit which can effectively improve the power factor of the circuit.
The utility model further provides a lamp with the emergency circuit.
An emergency circuit according to an embodiment of the first aspect of the present utility model comprises:
a power input;
the passive PFC module comprises a first diode, a second diode, a third diode, a first capacitor and a second capacitor, wherein the first capacitor is connected between the first diode and the power input end, the second diode is connected with the second capacitor, one end of the third diode is connected between the first diode and the first capacitor, and the other end of the third diode is connected between the second diode and the first capacitor so as to enable the bias direction of the third diode to be different under the condition that the power voltages input by the power input ends are different, and the voltage input by the power input ends is trimmed and output;
the switch module is respectively connected with the first capacitor, the second diode and the power input end and is used for controlling the switch of the emergency circuit according to the voltage input by the power input end;
and the light module is connected with the switch module.
The emergency circuit provided by the embodiment of the utility model has at least the following beneficial effects: when the voltage input by the power input end is higher than the charging voltage of the first capacitor and the second capacitor, the external power supply directly supplies power to the load; when the voltage input by the power input end is lower than the charging voltage of the first capacitor and the second capacitor, the third diode is reversely biased, the first diode and the second diode are conducted, the first capacitor and the second capacitor are connected in parallel to supply power to the load, and the external power supply does not supply power to the load. The first capacitor and the second capacitor enable the bias direction of the third diode to be different according to different voltages input by the power input end so as to trim the current input by the power input end, increase the conduction angle, further improve the power factor of the circuit and prolong the service life of the circuit.
According to some embodiments of the utility model, the power supply further comprises a bridge rectifier, one end of the bridge rectifier is connected with the power supply input end, and the other end of the bridge rectifier is connected with the first capacitor and the first diode respectively.
According to some embodiments of the utility model, the switch module comprises a control chip, a transformer and a lithium battery, wherein the transformer comprises a first induction end and a second induction end, the first induction end is respectively connected with the first capacitor, the second diode, the power input end and the control chip, the second induction end is connected with the lithium battery, and the lithium battery is connected with the light module.
According to some embodiments of the utility model, the lithium battery charging unit further comprises a fuse disposed between the second sensing terminal and a positive terminal of the lithium battery.
According to some embodiments of the utility model, the low voltage detection module further comprises a first end, a controllable precise voltage stabilizing source, a first resistor, a first triode and a second end, wherein the controllable precise voltage stabilizing source and a base electrode of the first triode are connected with the power input end through the first end, the first resistor is arranged between the first end and the base electrode of the first triode, a collector electrode of the first triode is connected with a power end of the control chip through the second end, and an emitter electrode of the first triode is grounded.
According to some embodiments of the utility model, the light module comprises a shunt switch, a second triode, a third triode and an LED lamp panel, one end of the shunt switch is connected with the second sensing end, the other end of the shunt switch is connected with the base electrode of the second triode, the collector electrode of the second triode is respectively connected with the positive electrode of the lithium battery and the positive electrode of the LED lamp panel, the emitter electrode of the second triode is connected with the base electrode of the third triode, the collector electrode of the third triode is connected with the negative electrode of the LED lamp panel, and the emitter electrode of the third triode is grounded.
According to some embodiments of the utility model, the shunt switch includes a fourth diode, a fifth diode, the positive terminal of the fourth diode is connected to the second sensing terminal, the negative terminal of the fourth diode is connected to the negative terminal of the fifth diode, the positive terminal of the fifth diode is connected to the base of the second triode, and the positive terminal of the lithium battery is connected between the negative terminal of the fourth diode and the negative terminal of the fifth diode.
According to some embodiments of the utility model, the lighting module further comprises a filtering branch, the filtering branch comprises a second resistor and a third capacitor, the second resistor is connected in parallel with the third capacitor, one end of the filtering branch is connected between the collector electrode of the second triode and the anode of the LED lamp panel, and the other end of the filtering branch is grounded.
According to some embodiments of the utility model, the light module further comprises a control switch, one end of the control switch is connected with the positive electrode of the lithium battery, and the other end of the control switch is respectively connected with the collector electrode of the second triode and the positive electrode of the LED lamp panel.
A luminaire according to an embodiment of a second aspect of the utility model comprises the emergency circuit of the above embodiment.
The lamp provided by the embodiment of the utility model has at least the following beneficial effects: the emergency circuit is provided with the embodiment, when the voltage input by the power input end is higher than the charging voltage of the first capacitor and the second capacitor, the external power supply directly supplies power to the load; when the voltage input by the power input end is lower than the charging voltage of the first capacitor and the second capacitor, the third diode is reversely biased, the first diode and the second diode are conducted, the first capacitor and the second capacitor are connected in parallel to supply power to the load, and the external power supply does not supply power to the load. The first capacitor and the second capacitor enable the bias direction of the third diode to be different according to different voltages input by the power input end so as to trim the current input by the power input end, increase the conduction angle, further improve the power factor of the circuit and prolong the service life of the circuit.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The utility model is further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic circuit diagram of an emergency circuit according to an embodiment of the present utility model;
fig. 2 is a circuit schematic of the low voltage detection module of the emergency circuit shown in fig. 1.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1, the emergency circuit of the present utility model includes a power input terminal 100, a passive PFC module 200, a switch module 300 and a light module 400 sequentially connected, the passive PFC module 200 includes a first diode D1, a second diode D2, a third diode D3, a first capacitor C1 and a second capacitor C2, the second terminal of the first capacitor C1 is connected to the negative terminal of the first diode D1, the first terminal of the second capacitor C2 is connected to the positive terminal of the second diode D2, the positive terminal of the third triode Q3 is connected between the first capacitor C1 and the first diode D1, the negative terminal of the third triode Q3 is connected between the second capacitor C2 and the second diode D2, the first terminal of the first capacitor C1 and the negative terminal of the second diode D2 are respectively connected to the positive terminal of the power input terminal 100, and the second terminal of the second capacitor C2 and the positive terminal of the first diode D1 are respectively connected to the negative terminal of the power input terminal 100. When the voltage input by the power input terminal 100 is higher than the charging voltage of the first capacitor C1 and the second capacitor C2, the external power supply directly supplies power to the load; when the voltage input by the power input end 100 is lower than the charging voltage of the first capacitor C1 and the second capacitor C2, the third diode D3 is reversely biased, the first diode D1 and the second diode D2 are conducted, the first capacitor C1 and the second capacitor C2 are connected in parallel to supply power to the load, the external power supply does not supply power to the load any more so as to trim the input current, the conduction angle is increased, the power factor of the circuit is further improved, and the service life of the circuit is prolonged. The switch module 300 is configured to control the switching of the light module 400 according to the voltage input by the power input terminal 100, and when the voltage input by the power input terminal 100 is lower than a preset voltage, the switch module 300 controls the light module 400 to be started, so as to realize illumination under the condition of power failure or low voltage.
It may be appreciated that the emergency circuit further includes a bridge rectifier 500, one end of the bridge rectifier 500 is connected to the power input terminal 100, and the other end of the bridge rectifier 500 is connected to the first capacitor C1 and the first diode D1, respectively. The alternating current input through the power input terminal 100 is converted into a smooth direct current.
Referring to fig. 1, the switch module 300 includes a control chip U1, a transformer T1 and a lithium battery, the transformer T1 includes a first sensing end and a second sensing end, the first end of the first sensing end is connected with a first capacitor C1, a second diode D2 and a power input end 100, the second end of the first sensing end is connected with a detection end of the control chip U1, a third end of the first sensing end is connected with a power end of the control chip U1, a fourth end of the first sensing end is grounded, the second sensing end is connected with the lithium battery, and the voltage in the circuit is reduced to a rated voltage for charging the lithium battery by the transformer T1 so as to charge the lithium battery.
It is understood that the switch module 300 further includes a fuse F1, and the fuse F1 is disposed between the second sensing terminal and the positive terminal of the lithium battery.
Referring to fig. 1 and 2, the emergency circuit further includes a low voltage detection module 600, where the low voltage detection module 600 includes a first end, a controllable precision voltage stabilizing source TL431, a first resistor R1, a first triode Q1, and a second end, bases of the controllable precision voltage stabilizing source TL431 and the first triode Q1 are connected with the power input end 100 through the first end, the first resistor R1 is disposed between the first end and the base of the first triode Q1, a collector of the first triode Q1 is connected with a power end of the control chip U1 through the second end, and an emitter of the first triode Q1 is grounded. When the voltage input by the power input end 100 is lower than the preset voltage of the controllable precise voltage stabilizing source TL431, the controllable precise voltage stabilizing source TL431 is not conducted, the current flows into the base electrode of the first triode Q1 through the first resistor R1, the first triode Q1 is conducted, the current of the power end of the control chip U1 flows into the low voltage detection module from the second end, the voltage of the power end of the control chip U1 drops, the voltage of the power end of the control chip U1 is lower than the working voltage, the control chip U1 stops working, the external power supply cannot supply power to the rear-stage circuit any more, the lithium battery is converted into the power supply mode from the charging mode, and the lithium battery supplies power to the rear-stage circuit.
It can be understood that the low voltage detection module 600 further includes a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifth capacitor C5, and a sixth diode D6, wherein one end of the tenth resistor R10 is connected to the first end of the low voltage detection module 600, the other end of the tenth resistor R10 is connected to the reference electrode of the controllable precision voltage stabilizing source, one end of the eleventh resistor R11 is connected to the first end of the low voltage detection module 600, the other end of the eleventh resistor R11 is connected to the negative electrode of the controllable precision voltage stabilizing source and the base of the first triode Q1, the first resistor R1 is disposed between the eleventh resistor R11 and the base of the first triode Q1, one end of the twelfth resistor R12 is connected to the reference electrode of the controllable precision voltage stabilizing source, the other end of the twelfth resistor R12 is connected to the negative electrode of the lithium battery, the thirteenth resistor R13 is disposed between the second end of the low voltage detection module 600 and the first triode Q1, the other end of the fourteenth resistor R14 is connected to the negative electrode of the first triode Q1, the positive electrode of the first triode Q1 is connected to the negative electrode of the first triode Q1, and the negative electrode of the first triode Q1 is connected to the negative electrode of the first resistor Q1, and the other end of the thirteenth resistor R12 is connected to the negative electrode of the thirteenth resistor R1.
Referring to fig. 1, the light module 400 includes a shunt switch, a second triode Q2, a third triode Q3, a second resistor R2 and an LED lamp panel, where a first input end of the shunt switch is connected with a second sensing end, a second input end of the shunt switch is connected with a base electrode of the second triode Q2, an output end of the shunt switch is connected with a negative electrode end of a lithium battery, a first end of the second resistor R2 is connected between the second input end of the shunt switch and the base electrode of the second triode Q2, a second end of the second resistor R2 is connected with a collector electrode of the second triode Q2, an emitter electrode of the second triode Q2 is connected with an anode of the lithium battery and an anode of the LED lamp panel, a collector electrode of the second triode Q2 is connected with a base electrode of the third triode Q3, a collector electrode of the third triode Q3 is connected with a negative electrode of the LED lamp panel, and an emitter electrode of the third triode Q3 is connected with a negative electrode end of the lithium battery. The current of the second sensing end flows into the shunt switch from the first end of the shunt switch, the current of the lithium battery flows into the shunt switch from the second end of the shunt switch through the second resistor R2, and the larger end of the shunt switch control circuit is conducted. When the emergency circuit adopts an external power supply to supply power to the circuit, the current of the second induction end is larger, the shunt switch controls the first end to be conducted, and the second end is cut off. The second end of the voltage dividing switch is cut off to cut off the second triode Q2, and then the third triode Q3 is cut off, so that the LED lamp panel stops working, and the LED lamp panel is prevented from being lightened under the condition of normal power supply. When the control chip stops working, the external power supply can not supply power to the rear-stage circuit any more, the lithium battery charging unit is converted into a power supply mode from a charging mode, the current provided by the lithium battery is larger than that provided by the second induction end, the shunt switch controls the second end to be conducted, the second end of the voltage dividing switch is conducted to enable the second triode Q2 to be conducted, when the second triode Q2 is conducted, the third triode Q3 is conducted, and the LED lamp panel starts working.
It is understood that the shunt switch includes a fourth diode D4 and a fifth diode D5, where the positive terminal of the fourth diode D4 is connected to the second sensing terminal, the negative terminal of the fourth diode D4 is connected to the negative terminal of the fifth diode D5, the positive terminal of the fifth diode D5 is connected to the base of the second triode Q2, the positive terminal of the lithium battery is connected between the negative terminal of the fourth diode D4 and the negative terminal of the fifth diode D5, the first terminal of the second resistor R2 is connected between the fifth diode D5 and the base of the second triode Q2, and the second terminal of the second resistor R2 is connected to the collector of the second triode Q2. When the voltage at the positive electrode terminal of the fourth diode D4 is higher than the voltage at the positive electrode terminal of the fifth diode D5, the fifth diode D5 cannot be turned on, and the fourth diode D4 is turned on; when the voltage at the positive terminal of the fifth diode D5 is higher than the voltage at the positive terminal of the fourth diode D4, the fourth diode D4 cannot be turned on, and the fifth diode D5 is turned on.
It can be understood that the light module 400 further includes a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, and a fourth capacitor C4, wherein the first end of the fourth resistor R4 is connected to the negative terminal of the fourth diode D4 and the negative terminal of the fifth diode D5, the second end of the fourth resistor R4 is connected to the negative terminal of the lithium battery, the first end of the fifth resistor R5 is connected to the positive terminal of the lithium battery, the second end of the fifth resistor R5 is connected between the negative terminal of the fourth diode D4 and the negative terminal of the fifth diode D5, the first end of the sixth resistor R6 is connected to the positive terminal of the LED lamp panel, the second end of the sixth resistor R6 is connected to the collector of the second triode Q2, the first end of the seventh resistor R7 is connected to the emitter of the second diode D5, the second end of the seventh resistor R7 is connected to the first end of the eighth resistor R8, the second end of the eighth resistor R8 is connected to the negative terminal of the fourth resistor R9, and the base of the eighth resistor R9 is connected to the fourth resistor R4, and the third resistor R9 is connected to the negative terminal of the fourth resistor R4.
It can be understood that the lighting module 400 further includes a filtering branch, the filtering branch includes a third resistor R3 and a third capacitor C3, the third resistor R3 is connected in parallel with the third capacitor C3, one end of the filtering branch is connected between the collector of the second triode Q2 and the positive electrode of the sixth resistor R6, and the other end of the filtering branch is grounded.
It can be appreciated that the light module 400 further includes a control switch, one end of the control switch is connected with the positive electrode of the lithium battery, the other end of the control switch is respectively connected with the collector electrode of the second triode Q2 and the positive electrode of the LED lamp panel, and the conduction condition of the LED lamp panel can be controlled through the control switch.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.
Claims (10)
1. An emergency circuit, comprising:
a power input;
the passive PFC module comprises a first diode, a second diode, a third diode, a first capacitor and a second capacitor, wherein the first capacitor is connected between the first diode and the power input end, the second diode is connected with the second capacitor, one end of the third diode is connected between the first diode and the first capacitor, and the other end of the third diode is connected between the second diode and the first capacitor so as to enable the bias direction of the third diode to be different under the condition that the power voltages input by the power input ends are different, and the voltage input by the power input ends is trimmed and output;
the switch module is respectively connected with the first capacitor, the second diode and the power input end and is used for controlling the switch of the emergency circuit according to the voltage input by the power input end;
and the light module is connected with the switch module.
2. The emergency circuit of claim 1, further comprising a bridge rectifier, one end of the bridge rectifier being connected to the power input, the other end of the bridge rectifier being connected to the first capacitor and the first diode, respectively.
3. The emergency circuit of claim 1, wherein the switch module comprises a control chip, a transformer and a lithium battery, the transformer comprises a first sensing end and a second sensing end, the first sensing end is respectively connected with the first capacitor, the second diode, the power input end and the control chip, the second sensing end is connected with the lithium battery, and the lithium battery is connected with the light module.
4. The emergency circuit of claim 3, wherein the switch module further comprises a fuse disposed between the second sensing terminal and a positive terminal of the lithium battery.
5. The emergency circuit of claim 3, further comprising a low voltage detection module, wherein the low voltage detection module comprises a first end, a controllable precision voltage stabilizing source, a first resistor, a first triode and a second end, wherein the controllable precision voltage stabilizing source and a base electrode of the first triode are connected with the power input end through the first end, the first resistor is arranged between the first end and the base electrode of the first triode, a collector electrode of the first triode is connected with a power end of the control chip through the second end, and an emitter electrode of the first triode is grounded.
6. The emergency circuit of claim 3, wherein the light module comprises a shunt switch, a second triode, a third triode, a second resistor and an LED lamp panel, a first input end of the shunt switch is connected with the second sensing end, a second input end of the shunt switch is connected with a base electrode of the second triode, an output end of the shunt switch is connected with a negative electrode end of a lithium battery, one end of the second resistor is connected between the second input end of the shunt switch and the base electrode of the second triode, the other end of the second resistor is connected with a collector electrode of the second triode, a collector electrode of the second triode is connected with an anode of the lithium battery and an anode of the LED lamp panel respectively, an emitter electrode of the second triode is connected with a base electrode of the third triode, a collector electrode of the third triode is connected with a negative electrode of the LED lamp panel, and an emitter electrode of the third triode is connected with a negative electrode end of the lithium battery.
7. The emergency circuit of claim 6, wherein the shunt switch comprises a fourth diode, a fifth diode, the positive terminal of the fourth diode connected to the second sensing terminal, the negative terminal of the fourth diode connected to the negative terminal of the fifth diode, the positive terminal of the fifth diode connected to the base of the second transistor, the positive terminal of the lithium battery connected between the negative terminal of the fourth diode and the negative terminal of the fifth diode, the first terminal of the second resistor connected between the fifth diode and the base of the second transistor.
8. The emergency circuit of claim 6, wherein the light module further comprises a filtering branch, the filtering branch comprises a third resistor and a third capacitor, the third resistor is connected in parallel with the third capacitor, one end of the filtering branch is connected between the collector of the second triode and the anode of the LED light panel, and the other end of the filtering branch is grounded.
9. The emergency circuit of claim 6, wherein the light module further comprises a control switch, one end of the control switch is connected with the positive electrode of the lithium battery, and the other end of the control switch is respectively connected with the collector electrode of the second triode and the positive electrode of the LED lamp panel.
10. A luminaire comprising an emergency circuit as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321724958.6U CN220235013U (en) | 2023-07-03 | 2023-07-03 | Emergency circuit and lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321724958.6U CN220235013U (en) | 2023-07-03 | 2023-07-03 | Emergency circuit and lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220235013U true CN220235013U (en) | 2023-12-22 |
Family
ID=89182014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321724958.6U Active CN220235013U (en) | 2023-07-03 | 2023-07-03 | Emergency circuit and lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220235013U (en) |
-
2023
- 2023-07-03 CN CN202321724958.6U patent/CN220235013U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102438353B (en) | Control circuit of double-light-source intelligent control type illumination lamp | |
| CN102438352B (en) | Integrated intelligent control type lighting lamp control circuit | |
| CN102917503B (en) | LED driver system with energy storage function | |
| CN204598424U (en) | A kind of LED normal illumination and emergency lighting integrated device | |
| US20190140462A1 (en) | Power supply device and lighting system | |
| BR112014023013B1 (en) | circuitry for controlling at least one load; led lamp; and method of controlling at least one load with a circuit set | |
| CN208337945U (en) | A kind of linear constant current LED lamp circuit with function of emergency illumination | |
| KR100715282B1 (en) | Charging control apparatus of battery for emergency lamp | |
| CN106028567A (en) | Emergency lighting circuit and emergency lighting lamp | |
| CN101835306A (en) | Led lamp control circuit and led lamp | |
| CN103687241B (en) | Emergency led lamp | |
| CN202873150U (en) | Energy storage LED driver system | |
| CN220235013U (en) | Emergency circuit and lamp | |
| CN105554959B (en) | Intelligent control circuit for Multi-function lighting device | |
| CN107606498A (en) | LED emergency lamps | |
| CN202475906U (en) | Light emitting diode (LED) emergency lighting system | |
| CN211580235U (en) | Dual-mode emergency LED lamp and LED control circuit | |
| KR101120609B1 (en) | Emergency light apparatus using light emitting diode | |
| WO2017045090A1 (en) | Multifunctional emergency led bulb with stand-by power supply | |
| CN207720482U (en) | Full-automatic LED emergency light | |
| CN2242390Y (en) | Lighting device with no-interruption function | |
| CN201919193U (en) | Uninterrupted illuminating system | |
| KR200449395Y1 (en) | Selectable charging equipment of self-charging emergency light | |
| CN220382805U (en) | Charging circuit and lamp | |
| CN105101566A (en) | Boosting constant current solar street lamp controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |