Light emitting diode with dustproof structure
Patent Information
- Application Number
- CN202522373186.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-10
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-11-10
AI Technical Summary
随着使用时间的推移，灰尘会逐渐在引脚表面及焊点缝隙内堆积，不仅可能导致引脚与电路板之间的电气接触电阻增大，影响电流传输效率，还可能因灰尘的绝缘作用或吸潮特性，引发焊点腐蚀、电路接触不良等问题，严重时甚至会导致发光二极管闪烁、亮度衰减乃至完全失效，极大缩短了其使用寿命并降低了设备的运行稳定性
通过在引脚上对称设置由防尘罩、密封圈、安装基环、环形橡胶气囊、环形磁铁以及环形黏贴层组成的防护结构，防尘罩可对引脚与电路板的焊点处形成外部遮挡，环形橡胶气囊、密封圈可增强防护结构与电路板、引脚接触部位的密封效果，两个防护结构上的两个环形磁铁的相互吸附能使两个防护结构稳定贴合在电路板两侧，同时环形黏贴层可加固防护结构与电路板的连接，最终有效阻挡灰尘附着在引脚与电路板的焊点处，降低电气接触电阻增大、焊点腐蚀、电路接触不良等问题发生概率，减少发光二极管闪烁、亮度衰减或失效情况，延长其使用寿命并提升设备运行稳定性。
Smart Images
Figure CN224910055U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of light-emitting diodes, and in particular to a light-emitting diode with a dustproof structure. Background Technology
[0002] As a highly efficient and energy-saving solid-state light source, light-emitting diodes (LEDs) are widely used in displays, lighting, and indicators due to their advantages such as long lifespan, low energy consumption, fast response speed, and environmental friendliness. Their core structure typically includes a light-emitting core composed of a semiconductor chip, an epoxy resin encapsulation for protecting the chip and optimizing light output, and pins for electrical connection and fixation. These pins, as key components for current transmission and mechanical support, directly determine the connection stability between the LED and external circuits and the overall operational reliability.
[0003] In practical applications, LEDs need to be soldered onto circuit boards via pins to form a complete circuit. However, after installation, the solder joints between the LED pins and the circuit board are exposed to the external environment. Due to the tiny gaps at the solder joints and the presence of residual flux, these areas easily become attachment points for dust particles. Over time, dust gradually accumulates on the pin surfaces and within the solder joint gaps. This can not only increase the electrical contact resistance between the pins and the circuit board, affecting current transmission efficiency, but also cause problems such as solder joint corrosion and poor circuit contact due to the insulating or hygroscopic properties of dust. In severe cases, it can even lead to LED flickering, brightness decay, or complete failure, significantly shortening its lifespan and reducing the operational stability of the equipment. Utility Model Content
[0004] The main objective of this invention is to provide a light-emitting diode with a dustproof structure, which can effectively solve the problems in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A light-emitting diode (LED) with a dustproof structure includes an LED body, which comprises an epoxy resin encapsulation and leads. Two protective structures are symmetrically and movably sleeved on the leads. Each protective structure consists of a dust cover, a sealing ring, a mounting base ring, an annular rubber airbag, an annular magnet, and an annular adhesive layer. Two sealing rings are symmetrically and fixedly installed inside one side wall of the dust cover. The mounting base ring is fixedly installed on the inner wall of the dust cover. The annular rubber airbag and the annular magnet are both fixedly installed at one end of the mounting base ring, with the annular magnet located inside the annular rubber airbag. The annular adhesive layer is fixedly installed inside the annular magnet.
[0006] Preferably, the pins on the light-emitting diode body are fixedly mounted on an epoxy resin encapsulation, and the pins are soldered onto a circuit board.
[0007] Preferably, the two protective structures are symmetrically arranged on both sides of the circuit board.
[0008] Preferably, the dust cover on the protective structure has two symmetrical mounting holes on one side wall. The dust cover is fitted onto the pin through the mounting holes, and the sealing ring is fixedly installed on the inner wall of the mounting holes. The sealing ring is also fitted onto the pin.
[0009] Preferably, one end of the dust cover and the annular rubber airbag on the protective structure are in contact with the circuit board, and an annular groove is provided at the end of the annular magnet near the circuit board. The annular adhesive layer is fixedly installed in the annular groove and is also adhered to one end of the circuit board.
[0010] Preferably, the two annular magnets on the two protective structures attract each other.
[0011] Compared with the prior art, the present invention has the following beneficial effects: By symmetrically arranging a protective structure on the pins, consisting of a dust cover, sealing ring, mounting base ring, annular rubber airbag, annular magnet, and annular adhesive layer, the dust cover provides external shielding for the solder joints between the pins and the circuit board. The annular rubber airbag and sealing ring enhance the sealing effect between the protective structure and the circuit board / pin contact points. The mutual attraction of the two annular magnets on the two protective structures allows them to be stably attached to both sides of the circuit board. At the same time, the annular adhesive layer strengthens the connection between the protective structure and the circuit board. Ultimately, this effectively prevents dust from adhering to the solder joints between the pins and the circuit board, reducing the probability of problems such as increased electrical contact resistance, solder joint corrosion, and poor circuit contact. It also reduces LED flicker, brightness decay, or failure, extends their service life, and improves the stability of equipment operation. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of the light-emitting diode body of this utility model after it is mounted on a circuit board; Figure 2 This is a schematic diagram showing the positional relationship between the light-emitting diode body and the protective structure of this utility model; Figure 3 This is a cross-sectional view of the protective structure of this utility model.
[0013] In the diagram: 1. Light-emitting diode body; 2. Protective structure; 3. Circuit board; 4. Epoxy resin encapsulation; 5. Leads; 6. Dust cover; 7. Mounting through hole; 8. Sealing ring; 9. Mounting base ring; 10. Annular rubber airbag; 11. Annular magnet; 12. Annular groove; 13. Annular adhesive layer. Detailed Implementation
[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0015] Please see Figure 1 - Figure 3 As shown, a light-emitting diode (LED) with a dustproof structure includes an LED body 1, which comprises an epoxy resin encapsulation 4 and leads 5. Two protective structures 2 are symmetrically and movably mounted on the leads 5. Each protective structure 2 consists of a dust cover 6, a sealing ring 8, a mounting base ring 9, an annular rubber airbag 10, an annular magnet 11, and an annular adhesive layer 13. Two sealing rings 8 are symmetrically and fixedly mounted within one side wall of the dust cover 6. The mounting base ring 9 is fixedly mounted on the inner wall of the dust cover 6. The annular rubber airbag 10 and the annular magnet 11 are both fixedly mounted at one end of the mounting base ring 9, with the annular magnet 11 located inside the annular rubber airbag 10. The annular adhesive layer 13 is fixedly mounted inside the annular magnet 11. The dust cover 6, sealing ring 8, and mounting base ring 9 are symmetrically arranged on the leads 5. The protective structure 2, consisting of an annular rubber airbag 10, an annular magnet 11, and an annular adhesive layer 13, provides external shielding for the solder joints between the pins 5 and the circuit board 3. The annular rubber airbag 10 and the sealing ring 8 enhance the sealing effect at the contact points between the protective structure 2 and the circuit board 3 and the pins 5. The mutual attraction of the two annular magnets 11 on the two protective structures 2 allows the two protective structures 2 to be stably attached to both sides of the circuit board 3. At the same time, the annular adhesive layer 13 strengthens the connection between the protective structure 2 and the circuit board 3. Ultimately, this effectively prevents dust from adhering to the solder joints between the pins 5 and the circuit board 3, reducing the probability of problems such as increased electrical contact resistance, solder joint corrosion, and poor circuit contact. It also reduces the flickering, brightness decay, or failure of the LED body 1, extends its service life, and improves the stability of equipment operation.
[0016] Specifically, the pins 5 on the LED body 1 are fixedly mounted on the epoxy resin encapsulation 4, and the pins 5 are soldered onto the circuit board 3. Two protective structures 2 are symmetrically arranged on both sides of the circuit board 3. Two mounting through holes 7 are symmetrically opened on one side wall of the dust cover 6 on the protective structure 2. The dust cover 6 is fitted onto the pins 5 through the mounting through holes 7. The sealing ring 8 is fixedly mounted on the inner wall of the mounting through hole 7 and is also fitted onto the pins 5. One end of the dust cover 6 and the annular rubber airbag 10 on the protective structure 2 are in contact with the circuit board 3. The annular magnet 11... An annular groove 12 is provided near one end of the circuit board 3. An annular adhesive layer 13 is fixedly installed in the annular groove 12 and is also attached to one end of the circuit board 3. The two annular magnets 11 on the two protective structures 2 attract each other. When mounting and fixing the LED body 1 onto the circuit board 3, first remove the protective structure 2 away from the epoxy resin encapsulation 4 from the pin 5. Then, align the pin 5 of the LED body 1 with the preset soldering hole on the circuit board 3 and insert it. Subsequently, use a soldering process to solder and fix the pin 5 to the circuit board 3. At this time, it is necessary to... Figure 1 As shown, the epoxy resin encapsulation 4 is tightly attached to the dust cover 6 on the protective structure 2 closest to it, and the protective structure 2 is tightly attached to one end of the circuit board 3, that is, the annular adhesive layer 13 on the protective structure 2 is attached to the circuit board 3, and the dust cover 6 and the annular rubber airbag 10 are both in contact with the circuit board 3; after the pin 5 is soldered to the circuit board 3, the previously removed protective structure 2 is re-sleeved onto the pin 5, so that the sealing ring 8 on the protective structure 2 is tightly fitted onto the pin 5, and at the same time, one end of the dust cover 6 and the annular rubber airbag 10 of the protective structure 2 is in contact with the other side of the circuit board 3, and the annular adhesive layer 13 inside the annular magnet 11 is attached to this side of the circuit board 3; at this time, the two protective structures 2 are located on both sides of the circuit board 3, and are fixedly connected to the circuit board 3, and the annular magnets 11 on the two protective structures 2 will attract each other, finally completing the installation of the light-emitting diode body 1 on the circuit board 3.
[0017] It should be noted that the dust cover 6, sealing ring 8, mounting base ring 9, annular rubber airbag 10, annular magnet 11, and annular adhesive layer 13 on the protective structure 2 are all made of high-temperature resistant insulating materials. This ensures that when the LED body 1 generates heat during operation or encounters an external high-temperature environment, the protective structure 2 can maintain structural stability and dustproof sealing effect, and also avoid electrical safety hazards caused by material conductivity, thus ensuring the overall safety and reliability of the LED operation.
[0018] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A light-emitting diode with a dustproof structure, comprising a light-emitting diode body (1), the light-emitting diode body (1) including an epoxy resin encapsulation (4) and leads (5), characterized in that: Two protective structures (2) are symmetrically and movably sleeved on the pin (5). The protective structure (2) consists of a dust cover (6), a sealing ring (8), a mounting base ring (9), an annular rubber airbag (10), an annular magnet (11), and an annular adhesive layer (13). There are two sealing rings (8) that are symmetrically and fixedly installed in one side wall of the dust cover (6). The mounting base ring (9) is fixedly installed on the inner wall of the dust cover (6). The annular rubber airbag (10) and the annular magnet (11) are both fixedly installed at one end of the mounting base ring (9). The annular magnet (11) is located inside the annular rubber airbag (10). The annular adhesive layer (13) is fixedly installed inside the annular magnet (11).
2. A light-emitting diode with a dustproof structure according to claim 1, characterized in that: The pins (5) on the body (1) of the light-emitting diode are fixedly mounted on the epoxy resin encapsulation (4), and the pins (5) are inserted and soldered onto the circuit board (3).
3. A light-emitting diode with a dustproof structure according to claim 2, characterized in that: The two protective structures (2) are symmetrically arranged on both sides of the circuit board (3).
4. A light-emitting diode with a dustproof structure according to claim 3, characterized in that: Two mounting holes (7) are symmetrically opened on one side wall of the dust cover (6) on the protective structure (2). The dust cover (6) is sleeved on the pin (5) through the mounting holes (7). The sealing ring (8) is fixedly installed on the inner wall of the mounting holes (7) and is also sleeved on the pin (5).
5. A light-emitting diode with a dustproof structure according to claim 4, characterized in that: The dust cover (6) and the annular rubber airbag (10) on the protective structure (2) are both in contact with the circuit board (3). The annular magnet (11) has an annular groove (12) at one end near the circuit board (3). The annular adhesive layer (13) is fixedly installed in the annular groove (12) and is also attached to one end of the circuit board (3).
6. A light-emitting diode with a dustproof structure according to claim 5, characterized in that: The two ring magnets (11) on the two protective structures (2) attract each other.