Silver paste circuit light-emitting module structure with positioning function
Patent Information
- Application Number
- CN202522129119.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-09
- Publication Date
- 2026-09-29
- Estimated Expiration
- 2035-10-09
AI Technical Summary
[0003]现有技术中的银浆线路发光模组在进行装配时，安装盒内部没有辅助对电路板进行定位盒固定的结构，导致电路板固定在安装盒内部时，位置容易出现偏差，电路板安装出现偏差会改变距离安装盒侧壁的间隙，让电路板上灯珠从安装盒盖透镜透出的光线会显示不均出现偏差，影响产品质量，针对这个问题，如何设计出一种带有定位功能的银浆线路发光模组结构，成为我们当前需要解决的问题
通过设置定位组件，在工作人员将电路板插入安装盒的内部时，电路板会被安装盒内部的弹力片导向和挤压，使电路板自动被定位并限位到安装盒的中心，避免电路板放置位置出现偏差，导致电路板上灯珠透过透镜的光线不均，影响产品的质量，同时，这时弹力片可以在工作人员对电路板进行安装时，起稳定电路板的效果，提高工作人员安装电路板的良品率；
Smart Images
Figure CN224814862U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of LED light-emitting module technology, and more specifically, to a silver paste circuit light-emitting module structure with positioning function. Background Technology
[0002] LED light-emitting modules are a basic type of LED module (another type is LED backlight modules). LED light-emitting modules are the most widely used products in LED products. They also have great differences in structure and electronics. A simple LED module is just a circuit board with LEDs and a housing. A more complex one adds some control, constant current source and related heat dissipation treatment to improve the lifespan and luminous intensity of the LEDs.
[0003] In existing silver paste circuit light-emitting modules, the mounting box lacks an auxiliary structure for positioning and fixing the circuit board during assembly. This leads to potential misalignment of the circuit board when it is fixed inside the mounting box. Such misalignment alters the gap between the circuit board and the side wall of the mounting box, causing uneven light transmission from the LEDs through the lens of the mounting box cover, thus affecting product quality. Therefore, designing a silver paste circuit light-emitting module structure with positioning functionality is a problem we need to solve. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a silver paste circuit light-emitting module structure with positioning function.
[0005] To achieve the above objectives, the present invention provides the following technical solution: The present invention provides a silver paste circuit light-emitting module structure with positioning function, including a mounting box, a mounting cover inserted into the top of the mounting box, a lens fixedly connected inside the mounting cover, a heat dissipation substrate disposed inside the mounting box, a circuit board fixedly connected to the top of the heat dissipation substrate, and an LED bead fixedly connected to the top of the circuit board. A positioning component is used to position the circuit board and install the mounting cover. The positioning component is connected to the mounting box and the mounting cover.
[0006] In the above technical solution, the positioning component further includes an elastic piece fixedly connected to the inner wall of the mounting box, the outer wall of the elastic piece having a first weakening groove and a second weakening groove, and the elastic piece abutting against the outer wall of the circuit board.
[0007] In the above technical solution, the top of the mounting box is provided with an annular groove, and the top of the mounting box is provided with an annular chamfer.
[0008] In the above technical solution, the bottom of the mounting cover is provided with a fitting ring that matches the annular chamfer, and the bottom of the mounting cover is fixedly connected with a sealing ring that matches the annular groove.
[0009] In the above technical solution, the fitting ring is further fitted onto the outer wall of the annular chamfer, and the sealing ring is inserted into the inside of the annular groove.
[0010] In the above technical solution, a connecting rod is fixedly connected to the bottom of the mounting cover, and a locking block is fixedly connected to one side of the connecting rod.
[0011] Compared with the prior art, the present invention has the following beneficial effects: By setting up a positioning component, when the worker inserts the circuit board into the mounting box, the circuit board will be guided and squeezed by the elastic sheet inside the mounting box, so that the circuit board is automatically positioned and limited to the center of the mounting box. This avoids deviation in the placement of the circuit board, which would cause uneven light transmission from the LED beads on the circuit board through the lens and affect the quality of the product. At the same time, the elastic sheet can stabilize the circuit board when the worker is installing it, thus improving the yield rate of the installed circuit board. The positioning assembly, consisting of an elastic plate, a second weakening groove, a connecting rod, and a locking block, works in concert. After the operator places the mounting cover on top of the mounting box, the locking block on the connecting rod engages with the first weakening groove on the elastic plate. This first weakening groove elastically engages with the outer wall of the locking block on the connecting rod, limiting and fixing the locking block. Consequently, the locking block, via the connecting rod, limits and fixes the mounting cover, securing it to the top of the mounting box. This achieves the effect of quickly and easily installing and fixing the mounting box and mounting cover, making it convenient for operators to use. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model; Figure 2 This is a cross-sectional view of the mounting box and mounting cover mating structure proposed in this utility model; Figure 3 The present utility model proposes Figure 2 Enlarged view of the A-section structure; Figure 4 This is a schematic diagram showing the disassembled structure of the mounting box and mounting cover proposed in this utility model; Figure 5 The present utility model proposes Figure 4 Enlarged view of the structure of part B.
[0013] In the diagram: 1. Mounting box; 2. Mounting cover; 3. Lens; 4. Heat sink substrate; 5. Circuit board; 6. LED bead; 7. Elastic sheet; 8. First weakening groove; 9. Second weakening groove; 10. Annular groove; 11. Annular chamfer; 12. Fitting ring; 13. Sealing ring; 14. Connecting rod; 15. Locking block. Detailed Implementation
[0014] To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0015] like Figure 1 - Figure 5 The diagram shows a silver paste circuit light-emitting module structure with positioning function, including a mounting box 1, a mounting cover 2 inserted into the top of the mounting box 1, a lens 3 fixedly connected inside the mounting cover 2, a heat dissipation substrate 4 disposed inside the mounting box 1, a circuit board 5 fixedly connected to the top of the heat dissipation substrate 4, and an LED bead 6 fixedly connected to the top of the circuit board 5; and a positioning component, which is used to position the circuit board 5 and install the mounting cover 2, and is connected to the mounting box 1 and the mounting cover 2. The positioning component includes an elastic piece 7 fixedly connected to the inner wall of the mounting box 1. The outer wall of the elastic piece 7 is provided with a first weakening groove 8 and a second weakening groove 9. The elastic piece 7 abuts against the outer wall of the circuit board 5. The top of the mounting box 1 is provided with an annular groove 10 and an annular chamfer 11. The bottom of the mounting cover 2 is provided with a fitting ring 12 that matches the annular chamfer 11. The bottom of the mounting cover 2 is fixedly connected with a sealing ring 13 that matches the annular groove 10. The fitting ring 12 is sleeved on the outer wall of the annular chamfer 11, and the sealing ring 13 is inserted into the inside of the annular groove 10. The bottom of the mounting cover 2 is fixedly connected with a connecting rod 14, and a locking block 15 is fixedly connected to one side of the connecting rod 14. The positioning component is used to position and fix the circuit board 5 inside the mounting box 1, and to fix the auxiliary mounting cover 2 on the mounting box 1. Specifically, when the worker needs to position the heat sink 4, circuit board 5, and LED beads 6 inside the mounting box 1, the heat sink 4, circuit board 5, and LED beads 6 can be directly inserted into the mounting box 1. Under the guidance and compression of the elastic sheet 7 inside the mounting box 1, the circuit board 5 is automatically positioned and limited to the center of the mounting box 1, ensuring that the gap between the circuit board 5 and each side wall of the mounting box 1 is uniform. This prevents deviations in the placement of the circuit board 5, which could lead to uneven light transmission from the LED beads 6 through the lens 3, affecting product quality. Simultaneously, the elastic sheet 7 stabilizes the circuit board 5 during installation, preventing displacement and ensuring a high success rate. After the circuit board 5 is installed inside the mounting box 1, the worker can place the mounting cover 2 on top of the mounting box 1, allowing the locking ring 12 on the mounting cover 2 to fit over the mounting box 1. The chamfered edge 11 of the mounting cover 2 allows the sealing ring 13 on the mounting cover 2 to be inserted into the annular groove 10 on the mounting box 1, improving the sealing between the mounting box 1 and the mounting cover 2 and preventing moisture from entering and affecting the internal circuit board 5. At the same time, during the process of the mounting cover 2 covering the mounting box 1, the locking block 15 of the connecting rod 14 on the mounting cover 2 will squeeze the elastic piece 7, causing the elastic piece 7 to deform from the first weakening groove 8 and the second weakening groove 9 until the elastic piece 7 is squeezed and adhered to the inner wall of the mounting box 1. At this time, the locking block 15 on the connecting rod 14 will be locked inside the first weakening groove 8 on the elastic piece 7, allowing the first weakening groove 8 on the elastic piece 7 to be elastically locked on the outer wall of the locking block 15 on the connecting rod 14, limiting and fixing the locking block 15. In turn, the locking block 15 limits and fixes the mounting cover 2 through the connecting rod 14, fixing the mounting cover 2 to the top of the mounting box 1, so as to achieve the effect of quickly installing and fixing the mounting box 1 and the mounting cover 2, which is convenient for operators to use.
[0016] Among them, circuit board 5 is a printed circuit board, which is composed of pads (pad-type pads), silver paste lines, white PET substrate and different types of ink layers through printing process; Specifically, the processing steps include the following: S1: First black ink layer on the back: Black ink is printed on the entire back of the white PET substrate, mainly to block light and reduce material shrinkage; S2: Second black ink layer on the back: The second black ink layer is precisely aligned and printed on the first ink layer to assist the first ink layer in blocking light across the entire surface; S3: Third white lettering ink layer on the back: The third layer of white lettering ink is precisely aligned and printed on the second layer; S4: Fourth black base ink layer on the front: The fourth black base ink layer is printed on the front of a white PET substrate by precise alignment; S5: Fifth silver paste circuit ink layer on the front: Conductive silver paste is printed on a white PET substrate using high-precision screen printing technology to form a predetermined circuit pattern. S6: The sixth silver paste ink layer on the front side: The solder pads and gold fingers are connected to the main silver paste circuit through precise alignment printing; S7: The seventh white ink layer on the front: It mainly plays a role in covering and initially filling, initially covering the uneven areas of the silver paste lines to form a relatively smooth white interface. S8: The eighth white ink layer on the front: mainly serves to increase reflection and provide complete insulation, increases the thickness of the reflective layer, ensures complete coverage of any gaps that may leak light, and together with the white PET substrate, forms a closed high-reflectivity cavity to reflect light to the light-emitting surface to the maximum extent. S9: Ninth black outline ink layer on the front: Outline pattern and clearance pattern are printed by precise alignment.
[0017] The above steps can achieve the following results: Printing two layers of solid black ink on the reverse side of a white PET substrate effectively disperses and absorbs curing shrinkage and thermal stress, confining overall deformation to local micro-areas. Printing the main circuitry and pads separately, based on the pad size, ensures the stability of the macroscopic graphic and pad positions. Printing the silver paste circuitry and pads separately significantly improves accuracy and stability, leading to a higher yield rate in subsequent SMT assembly.
[0018] Working principle: When the staff needs to position the circuit board 5 inside the mounting box 1, the circuit board 5 and its connecting parts can be inserted into the inside of the mounting box 1 together. Under the guidance and compression of the elastic piece 7 inside the mounting box 1, the circuit board 5 will be automatically positioned and limited to the center of the mounting box 1, thereby improving the positioning success rate of the circuit board 5 and achieving the effect of quickly positioning the circuit board 5. Furthermore, after the circuit board 5 is installed inside the mounting box 1, the operator can place the mounting cover 2 on top of the mounting box 1, so that the fitting ring 12 on the mounting cover 2 fits onto the annular chamfer 11 of the mounting box 1, and the sealing ring 13 on the mounting cover 2 is inserted into the annular groove 10 on the mounting box 1, thereby improving the sealing between the mounting box 1 and the mounting cover 2 and preventing moisture from entering and affecting the internal circuit board 5. At the same time, during the process of the mounting cover 2 being placed on the mounting box 1, the locking block 15 on the connecting rod 14 will lock into the first weakening groove 8 on the elastic piece 7, fixing the mounting cover 2 and the mounting box 1, making it convenient for the operator to use.
[0019] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A silver paste circuit light-emitting module structure with positioning function, comprising a mounting box (1), characterized in that, The mounting box (1) is fitted with a mounting cover (2) at the top. A lens (3) is fixedly connected inside the mounting cover (2). A heat dissipation substrate (4) is provided inside the mounting box (1). A circuit board (5) is fixedly connected to the top of the heat dissipation substrate (4). An LED bead (6) is fixedly connected to the top of the circuit board (5). A positioning component is used to position the circuit board (5) and install the mounting cover (2). The positioning component is connected to the mounting box (1) and the mounting cover (2).
2. The silver paste circuit light-emitting module structure with positioning function according to claim 1, characterized in that, The positioning component includes an elastic piece (7) fixedly connected to the inner wall of the mounting box (1). The outer wall of the elastic piece (7) is provided with a first weakening groove (8) and a second weakening groove (9). The elastic piece (7) abuts against the outer wall of the circuit board (5).
3. The silver paste circuit light-emitting module structure with positioning function according to claim 2, characterized in that, The top of the mounting box (1) is provided with an annular groove (10) and the top of the mounting box (1) is provided with an annular chamfer (11).
4. The silver paste circuit light-emitting module structure with positioning function according to claim 3, characterized in that, The bottom of the mounting cover (2) is provided with a fitting ring (12) that matches the annular chamfer (11), and the bottom of the mounting cover (2) is fixedly connected with a sealing ring (13) that matches the annular groove (10).
5. The silver paste circuit light-emitting module structure with positioning function according to claim 4, characterized in that, The fitting ring (12) is fitted onto the outer wall of the annular chamfer (11), and the sealing ring (13) is inserted into the inside of the annular groove (10).
6. The silver paste circuit light-emitting module structure with positioning function according to claim 5, characterized in that, A connecting rod (14) is fixedly connected to the bottom of the mounting cover (2), and a locking block (15) is fixedly connected to one side of the connecting rod (14).