CN220022328U - Multi-level lightning-protection surge protection device for LED street lamp - Google Patents
Multi-level lightning-protection surge protection device for LED street lamp Download PDFInfo
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- CN220022328U CN220022328U CN202320735718.XU CN202320735718U CN220022328U CN 220022328 U CN220022328 U CN 220022328U CN 202320735718 U CN202320735718 U CN 202320735718U CN 220022328 U CN220022328 U CN 220022328U
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Abstract
The multi-level lightning-protection surge protection device of the LED street lamp comprises a first protection module, a second protection module and a third protection module; the first protection module comprises a first temperature fuse F1, at least two piezoresistors RV1 connected in parallel, a current limiting resistor R2, a rectifying diode D1, a light emitting diode LED1 and a gas discharge tube GDT1; the second protection module comprises a capacitor C1 and at least one transient suppression diode TVS1 which are arranged in parallel, and is respectively connected with the positive pole and the negative pole of the output end of the LED power supply module; the third protection module comprises a plurality of piezoresistors RV3 which are connected in parallel, one end of the third protection module is connected with the negative electrode of the output end of the LED power supply module, and the other end of the third protection module is grounded; the utility model is provided with the triple third protection module, and the triple third protection module absorbs the high-voltage pulse current step by step, so that the residual voltage of the LED power module is prevented when the LED power module is broken down by lightning strike, the LED power module is prevented from being broken down, and the requirement of long-term safe use is met.
Description
Technical Field
The utility model relates to the technical field of LED street lamp lightning protection, in particular to a multi-level lightning protection surge protection device for an LED street lamp.
Background
With a great deal of application of the LED technology, the LED street lamp has the characteristics of good chromaticity, no maintenance, long service life and energy conservation. Because the LED street lamp mounted position is higher, in thunderstorm weather, drive power supply extremely easily suffers from the invasion of thunderbolt and various surge currents, consequently, the lightning protection device that is directed at LED street lamp drive power supply has also arrived at.
The LED street lamp capable of preventing lightning surges generally comprises a lamp body which is composed of a lightning arrester, a constant-current power supply, an LED lamp group and a heat radiation body arranged on the back of the LED lamp group, wherein the lightning arrester is fixedly arranged on the heat radiation body, and electronic elements such as a metal oxide piezoresistor, a temperature switch, a fuse and a discharge tube are arranged in the lightning arrester. The existing lightning arrester has a complex structure, can play a certain role in protection, but has higher cost; however, the block cannot function in residual pressure treatment after the structure is simplified, so that the protection effect is poor. After the lightning protector is aged for a long time, overheat reaction can occur inside, the lightning protector is invalid or damaged, damage can be caused to the constant-current power supply and the LED lamp group, and how to design the LED street lamp lightning protection surge protection device with good protection effect, economy, practicability and long product shelf life.
Disclosure of Invention
The utility model mainly aims to overcome the defects and the shortcomings of the prior art and provide the multi-level lightning-protection surge protection device for the LED street lamp.
The multi-level lightning protection surge protection device for the LED street lamp is used for protecting an LED power supply module and an LED light source module which are arranged at a mains supply input end and comprises a first protection module, a second protection module and a third protection module;
the first protection module comprises a first temperature fuse F1, at least two piezoresistors RV1 connected in parallel, a current limiting resistor R2, a rectifying diode D1, a light emitting diode LED1 and a gas discharge tube GDT1; one end of the first temperature fuse F1 is connected with a fire wire end (L), the rectifying diode D1, the current limiting resistor R2 and the light emitting diode LED1 are connected in series, and one end of the piezoresistor RV1 and one end of the rectifying diode D1 are connected with the other end of the first temperature fuse F1; the other end of the piezoresistor RV1 and one end of the light-emitting diode LED1 are connected with a zero line end (N), one end of the gas discharge tube GDT1 is connected to the other end of the piezoresistor RV1, one end of the light-emitting diode LED1 and the zero line end (N), and the other end of the gas discharge tube GDT1 is connected with a ground line end (PE);
the second protection module comprises a capacitor C1 and at least one transient suppression diode TVS1 which are arranged in parallel, and the second protection module is respectively connected with the positive pole and the negative pole of the output end of the LED power supply module;
the third protection module comprises a plurality of piezoresistors RV3 which are connected in parallel, one end of the third protection module is connected with the negative electrode of the output end of the LED power supply module, and the other end of the third protection module is grounded.
According to the utility model, the first protection module is arranged between the mains supply input end and the LED power supply module, the second protection module and the third protection module are arranged between the LED power supply module and the LED light source module, the lightning protection circuit of the first protection module is used for outputting the lightning protection circuit to the LED power supply module, and then the lightning protection circuit of the first protection module is used for absorbing the high-voltage pulse current step by step to meet the requirement of safe use. The first protection module is grounded and electrically connected with the lightning protection ground wire, the response time of the internal semiconductor surge absorbing device is short, the residual voltage output is low, the clamping is accurate, and when lightning stroke occurs, the high-voltage pulse current flows through the first protection module and is released to the ground by the grounding end. The output end of the LED power supply module is provided with a second protection module and a third protection module, so that when the LED power supply module is prevented from being broken down by lightning, the LED power supply module has residual voltage, and the LED light source module is prevented from being broken down.
In one embodiment, the LED power supply further comprises a fourth protection module, wherein the fourth protection module comprises a second temperature fuse F2, the second temperature fuse F2 is arranged between the input end of the LED power supply module and the live wire end (L),
in one embodiment, the LED light source module further comprises a fifth protection module, wherein the fifth protection module comprises a third temperature fuse F3, and the third temperature fuse F3 is arranged between the output end of the LED power source module and the LED light source module.
In one embodiment, the LED light source module further comprises a sixth protection module, the sixth protection module comprises a plurality of capacitors C2, the LED light source module comprises a plurality of LED modules, and each LED module is connected with one capacitor C2. And a sixth protection module is arranged on the LED module to protect the LED lamp beads from breakdown.
In one embodiment, one end of the capacitor C2 arranged at the first is connected to one end of the capacitor C1, one end of the transient suppression diode TVS1 and the positive electrode of the output end of the LED power module, and one end of the capacitor C2 arranged at the last is connected to the other end of the capacitor C1, the other end of the transient suppression diode TVS1 and the negative electrode of the output end of the LED power module, and any two adjacent capacitors C2 in the middle position are connected to each other.
In one embodiment, the capacitors C1 and C2 are tantalum capacitors.
In one embodiment, the second protection module includes a capacitor C1, a first transient suppression diode TVS1, a second transient suppression diode TVS2, and a third transient suppression diode TVS3, two ends of the capacitor C1 are connected to the positive pole and the negative pole of the output end of the LED power module, two ends of the first transient suppression diode TVS1 are connected to the positive pole and the negative pole of the output end of the LED power module, one end of the second transient suppression diode TVS2 and one end of the third transient suppression diode TVS3 are connected to the ground, the other end of the second transient suppression diode TVS2 is connected to the positive pole of the output end of the LED power module, and the other end of the third transient suppression diode TVS3 is connected to the negative pole of the output end of the LED power module. The capacitor C1, the first transient suppression diode TVS1, the second transient suppression diode TVS2 and the third transient suppression diode TVS3 are used for absorbing residual voltage, so that the LED light source module is protected from breakdown, and the reliability of the LED street lamp is further improved.
In one embodiment, the gas discharge tube GDT1 is a ceramic gas discharge tube.
The multi-layer lightning-protection surge protection device for the LED street lamp has the beneficial effects that: the LED power supply module comprises a first protection module, a second protection module, a third protection module, a lightning protection circuit, a first protection module, a second protection module, a third protection module, a first protection module and a third protection module, wherein the first protection module is arranged between the mains supply input end and the LED power supply module, the second protection module and the third protection module are arranged between the LED power supply module and the LED light source module, the lightning protection circuit of the first protection module is used for outputting the lightning protection circuit to the LED power supply module, and then the lightning protection circuit of the first protection module and the second protection module and the third protection module is used for absorbing high-voltage pulse current step by step, so that the requirement of safe use is met. The output end of the LED power supply module is provided with a second protection module and a third protection module, so that when the LED power supply module is prevented from being broken down by lightning, the LED power supply module has residual voltage, and the LED light source module is prevented from being broken down.
Drawings
FIG. 1 is a schematic diagram of a multi-level lightning and surge protection device for an LED street lamp;
FIG. 2 is a circuit diagram of the multi-level lightning and surge protection device of the LED street lamp of the utility model;
FIG. 3 is a schematic structural view of the multi-level lightning and surge protection device of the LED street lamp of the utility model;
fig. 4 is a circuit diagram of the multi-level lightning-protection surge protection device of the LED street lamp.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The utility model provides a multi-level lightning-protection surge protection device of an LED street lamp, which is used for protecting an LED power supply module and an LED light source module which are arranged at a live wire end (L) and a neutral wire end (N), and comprises a first protection module, a second protection module and a third protection module;
the first protection module comprises a first temperature fuse F1, at least two piezoresistors RV1 connected in parallel, a current limiting resistor R2, a rectifying diode D1, a light emitting diode LED1 and a gas discharge tube GDT1; one end of the first temperature fuse F1 is connected with a fire wire end (L), the rectifying diode D1, the current limiting resistor R2 and the light emitting diode LED1 are connected in series, and one end of the piezoresistor RV1 and one end of the rectifying diode D1 are connected with the other end of the first temperature fuse F1; the other end of the piezoresistor RV1 and one end of the light-emitting diode LED1 are connected with a zero line end (N), one end of the gas discharge tube GDT1 is connected to the other end of the piezoresistor RV1, one end of the light-emitting diode LED1 and the zero line end (N), and the other end of the gas discharge tube GDT1 is connected with a ground line end (PE);
the second protection module comprises a capacitor C1 and at least one transient suppression diode TVS1 which are arranged in parallel, and the second protection module is respectively connected with the positive pole and the negative pole of the output end of the LED power supply module;
the third protection module comprises a plurality of piezoresistors RV3 which are connected in parallel, one end of the third protection module is connected with the negative electrode of the output end of the LED power supply module, and the other end of the third protection module is grounded.
According to the utility model, the first protection module is arranged between the mains supply input end and the LED power supply module, the second protection module and the third protection module are arranged between the LED power supply module and the LED light source module, the lightning protection circuit of the first protection module is used for outputting the lightning protection circuit to the LED power supply module, and then the lightning protection circuit of the first protection module is used for absorbing the high-voltage pulse current step by step to meet the requirement of safe use. The output end of the LED power supply module is provided with a second protection module and a third protection module, so that when the LED power supply module is prevented from being broken down by lightning, the LED power supply module has residual voltage, and the LED light source module is prevented from being broken down.
Examples
Referring to fig. 1, the present utility model provides a multi-level lightning and surge protection device for an LED street lamp, which is used for protecting an LED power module 2 and an LED light source module 3 disposed at a live wire end (L) and a neutral wire end (N) of a mains input end 1, and the multi-level lightning and surge protection device for an LED street lamp includes a first protection module 4, a second protection module 5 and a third protection module 6, wherein the first protection module 4 is disposed between the mains input end 1 and the LED power module 2, and the second protection module 5 and the third protection module 6 are disposed between the LED power module 2 and the LED light source module 3.
More specifically, referring to fig. 2, the first protection module 4 includes a first thermal fuse F1, two parallel piezoresistors RV1, a current limiting resistor R2, a rectifying diode D1, a light emitting diode LED1, and a gas discharge tube GDT1; one end of the first temperature fuse F1 is connected with a wire end (L), the rectifying diode D1, the current limiting resistor R2 and the light emitting diode LED1 are connected in series, and one end of the piezoresistor RV1 and one end of the rectifying diode D1 are connected with the other end of the first temperature fuse F1; the other end of the piezoresistor RV1 and one end of the light-emitting diode LED1 are connected with a zero line end (N), one end of the gas discharge tube GDT1 is connected to the other end of the piezoresistor RV1, one end of the light-emitting diode LED1 and the zero line end (N), and the other end of the gas discharge tube GDT1 is connected with a ground wire end (PE). When the temperature is too high, the first temperature fuse F1 starts to act, and is heated to generate an unrecoverable open circuit, at this time, since the first temperature fuse F1 is blown, a state indicating circuit connected in series between the first temperature fuse F1 and the zero line end (N) is disconnected, the light emitting diode LED1 does not emit light any more, so that lightning damage is prevented, and maintenance and replacement are required in time. When the first temperature fuse F1 is not opened, the status indication circuit is turned on, and the light emitting diode LED1 emits light to display that the first protection module 4 is operating normally. The gas discharge tube GDT1 is a ceramic gas discharge tube.
The second protection module 5 comprises a capacitor C1 and a transient suppression diode TVS1 which are arranged in parallel, wherein two ends of the capacitor C1 and the transient suppression diode TVS1 are respectively connected with the positive pole and the negative pole of the output end of the LED power supply module 2 and two ends of the LED light source module 3; the capacitor C1 and the first transient suppression diode TVS1 are used for absorbing residual voltage and protecting the LED light source module from breakdown.
The third protection module 6 comprises three piezoresistors RV3 connected in parallel, one end of each piezoresistor RV3 connected in parallel is connected with the negative electrode of the output end of the LED power supply module 2, and the other end of each piezoresistor RV3 connected in parallel is grounded.
According to the utility model, the second protection module 5 and the third protection module 6 are arranged between the first protection module 4 between the mains supply input end 1 and the LED power supply module 2 and between the LED power supply module 2 and the LED light source module 3, and are output to the LED power supply module 2 through the lightning protection circuit of the first protection module 4, and then are output to the second protection module 5 and the third protection module 6, so that the high-voltage pulse current is absorbed step by step, and the requirement of safe use is met. The first protection module 4 is grounded and electrically connected with the lightning protection ground wire, the response time of the internal semiconductor surge absorbing device is short, the residual voltage output is low, the clamping is accurate, and when lightning stroke occurs, the high-voltage pulse current flows through the first protection module 4 and is released to the ground by the grounding end. The output end of the LED power supply module 2 is provided with a second protection module 5 and a third protection module 6, so that when the LED power supply module 2 is prevented from being broken down by lightning, the LED power supply module 2 has residual voltage, and the LED light source module 3 is prevented from being broken down.
More specifically, referring to fig. 2 and 3, the multi-level lightning-protection surge protection device for an LED street lamp further includes a fourth protection module 7, where the fourth protection module 7 includes a second temperature fuse F2, and the second temperature fuse F2 is disposed between an input end and a live wire end (L) of the LED power module 2. When the temperature is too high, the second temperature fuse F2 starts to act, and is heated to generate an unrecoverable open circuit, so that the function of protecting the LED power module 2 is achieved.
More specifically, referring to fig. 2 and 3, the multi-level lightning protection device for an LED street lamp further includes a fifth protection module 8, where the fifth protection module 8 includes a third temperature fuse F3, and the third temperature fuse F3 is disposed between the output end of the LED power module 2 and the LED light source module 3. When the temperature is too high, the third temperature fuse F3 starts to act, and is heated to generate an unrecoverable open circuit, so that the function of protecting the LED light source module 3 is achieved.
More specifically, referring to fig. 2 and 3, the multi-level lightning protection device for an LED street lamp further includes a sixth protection module 9, the sixth protection module 9 includes a plurality of capacitors C2, the LED light source module 3 includes a plurality of LED modules, and each LED module is connected to one capacitor C2.
More specifically, referring to fig. 2, one end of the first capacitor C2 is connected to one end of the capacitor C1, one end of the transient suppression diode TVS1 and the positive electrode of the output end of the LED power module 2, one end of the last capacitor C2 is connected to the other end of the capacitor C1, the other end of the transient suppression diode TVS1 and the negative electrode of the output end of the LED power module 2, and any two adjacent capacitors C2 in the middle position are connected to each other. The capacitor C1 and the capacitor C2 are tantalum capacitors. The sixth protection module is arranged on the LED module, and the LED lamp beads are prevented from being broken down under the condition that the front protection modules lose protection.
More specifically, in another implementation manner of the present embodiment, referring to fig. 4, the second protection module 5 includes a capacitor C1, a first transient suppression diode TVS1, a second transient suppression diode TVS2, and a third transient suppression diode TVS3, two ends of the capacitor C1 are connected to the positive pole and the negative pole of the output end of the LED power module 2, two ends of the first transient suppression diode TVS1 are connected to the positive pole and the negative pole of the output end of the LED power module 2, one end of the second transient suppression diode TVS2 and one end of the third transient suppression diode TVS3 are connected to the ground, the other end of the second transient suppression diode TVS2 is connected to the positive pole of the output end of the LED power module 2, and the other end of the third transient suppression diode TVS3 is connected to the negative pole of the output end of the LED power module 2. The capacitor C1, the first transient suppression diode TVS1, the second transient suppression diode TVS2 and the third transient suppression diode TVS3 are used for absorbing residual voltage and protecting the LED light source module from breakdown.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (8)
1. The utility model provides a multistage lightning protection surge protection device of LED street lamp for protection sets up LED power module and the LED light source module at the commercial power input, its characterized in that: the device comprises a first protection module, a second protection module and a third protection module;
the first protection module comprises a first temperature fuse F1, at least two piezoresistors RV1 connected in parallel, a current limiting resistor R2, a rectifying diode D1, a light emitting diode LED1 and a gas discharge tube GDT1; one end of the first temperature fuse F1 is connected with a fire wire end (L), the rectifying diode D1, the current limiting resistor R2 and the light emitting diode LED1 are connected in series, and one end of the piezoresistor RV1 and one end of the rectifying diode D1 are connected with the other end of the first temperature fuse F1; the other end of the piezoresistor RV1 and one end of the light-emitting diode LED1 are connected with a zero line end (N), one end of the gas discharge tube GDT1 is connected to the other end of the piezoresistor RV1, one end of the light-emitting diode LED1 and the zero line end (N), and the other end of the gas discharge tube GDT1 is connected with a ground line end (PE);
the second protection module comprises a capacitor C1 and at least one transient suppression diode TVS1 which are arranged in parallel, and the second protection module is respectively connected with the positive pole and the negative pole of the output end of the LED power supply module;
the third protection module comprises a plurality of piezoresistors RV3 which are connected in parallel, one end of the third protection module is connected with the negative electrode of the output end of the LED power supply module, and the other end of the third protection module is grounded.
2. The LED street lamp multi-level lightning surge protection device of claim 1, wherein: the LED power supply module further comprises a fourth protection module, the fourth protection module comprises a second temperature fuse F2, and the second temperature fuse F2 is arranged between the input end of the LED power supply module and the live wire end (L).
3. The LED street lamp multi-level lightning surge protection device of claim 1, wherein: the LED light source module further comprises a fifth protection module, wherein the fifth protection module comprises a third temperature fuse F3, and the third temperature fuse F3 is arranged between the output end of the LED power source module and the LED light source module.
4. The LED street lamp multi-level lightning surge protection device of claim 1, wherein: the LED light source module comprises a plurality of LED modules, and each LED module is connected with one capacitor C2.
5. The multi-level lightning surge protection device of an LED street lamp of claim 4, wherein: one end of the first capacitor C2 is connected with one end of the capacitor C1, one end of the transient suppression diode TVS1 and the positive electrode of the output end of the LED power module, one end of the last capacitor C2 is connected with the other end of the capacitor C1, the other end of the transient suppression diode TVS1 and the negative electrode of the output end of the LED power module, and any two adjacent capacitors C2 in the middle position are connected with each other.
6. The LED street lamp multi-level lightning surge protection device according to any one of claims 1, 4, 5, characterized in that: the capacitor C1 and the capacitor C2 are tantalum capacitors.
7. The LED street lamp multi-level lightning surge protection device of claim 1, wherein: the second protection module comprises a capacitor C1, a first transient suppression diode TVS1, a second transient suppression diode TVS2 and a third transient suppression diode TVS3, wherein two ends of the capacitor C1 are connected to the positive pole and the negative pole of the output end of the LED power module, two ends of the first transient suppression diode TVS1 are connected to the positive pole and the negative pole of the output end of the LED power module, one end of the second transient suppression diode TVS2 and one end of the third transient suppression diode TVS3 are connected to the ground, the other end of the second transient suppression diode TVS2 is connected to the positive pole of the output end of the LED power module, and the other end of the third transient suppression diode TVS3 is connected to the negative pole of the output end of the LED power module.
8. The LED street lamp multi-level lightning surge protection device of claim 1, wherein: the gas discharge tube GDT1 is a ceramic gas discharge tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320735718.XU CN220022328U (en) | 2023-04-04 | 2023-04-04 | Multi-level lightning-protection surge protection device for LED street lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320735718.XU CN220022328U (en) | 2023-04-04 | 2023-04-04 | Multi-level lightning-protection surge protection device for LED street lamp |
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| Publication Number | Publication Date |
|---|---|
| CN220022328U true CN220022328U (en) | 2023-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320735718.XU Active CN220022328U (en) | 2023-04-04 | 2023-04-04 | Multi-level lightning-protection surge protection device for LED street lamp |
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| Country | Link |
|---|---|
| CN (1) | CN220022328U (en) |
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2023
- 2023-04-04 CN CN202320735718.XU patent/CN220022328U/en active Active
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