Assembled and combined type PCB (Printed Circuit Board) lamp panel

Abstract

The utility model discloses an assembly combined type PCB lamp panel, which relates to the technical field of PCB lamp panels, and comprises a lamp panel main body, the lamp panel main body comprises a central connecting plate and a plurality of groups of connecting plug boards which are symmetrically arranged on two sides of the central connecting plate and are distributed in a linear array, an assembling inserting groove used for being connected with the connecting inserting plates in an inserted mode when the lamp panel bodies are assembled is formed between every two adjacent connecting inserting plates, a plurality of lamp beads are evenly installed on the central connecting plate and the connecting inserting plates, and the adjacent lamp panel bodies are connected and assembled through assembling connecting pieces in the direction without the connecting inserting plates. A comb-shaped wiring layer corresponding to the connecting plug board is arranged on the back face of the lamp panel body and comprises a plurality of conducting circuits arranged in parallel. According to the utility model, the lamp panel main body is inserted and matched with the assembling slots through the connecting insertion plates, so that transverse expansion is realized; the adjacent lamp panel bodies are fixed through the splicing connecting pieces, the connecting inserting blocks are inserted into the connecting inserting holes of the lamp panel bodies, the connecting belts are embedded into the belt connecting grooves, and stable connection is formed.

Description

Technical Field

[0001] This utility model relates to the field of PCB light board technology, specifically to an assembled PCB light board. Background Technology

[0002] With the rapid development of flat panel display technology, the backlight module, as a core component of LCD panels, directly determines the image quality and energy efficiency of end products. Among backlight solutions, edge-lit backlighting has become the mainstream technology due to its thinness and lightness, and is widely used in televisions, monitors, and mobile devices. However, existing edge-lit backlighting technologies still face many technical bottlenecks in packaging processes, optical performance, and cost control, making it difficult to meet increasingly stringent market demands.

[0003] Current side-lit backlight modules primarily employ the traditional architecture of "LED package + PCB board soldering." This technology involves encapsulating a mixture of blue LED chips and red / green phosphors within a transparent colloid to form a white LED device, which is then fixed to the PCB board surface using solder paste. To prevent damage to the LED chips due to mechanical vibration during transportation or assembly, metal spacers are typically added at the soldering points on the PCB board to enhance structural strength. This technical solution has the following drawbacks:

[0004] Unstable optical performance: The precise ratio of phosphor to blue LED chip in the co-packaging process is difficult to control, and uneven phosphor distribution is prone to occur during the curing process of the colloid. Under long-term high-load operation, the thermal expansion and contraction of the colloid can cause phosphor particle migration, resulting in color temperature drift and color coordinate shift, which directly affects the color reproduction of the display device.

[0005] Poor heat dissipation efficiency: The encapsulating colloid acts as a poor conductor of heat, forming a significant thermal resistance layer. Actual measurement data shows that when the LED junction temperature exceeds 85℃, the colloid ages rapidly, leading to a 30%-50% increase in light decay rate, severely limiting the lifespan of the backlight module.

[0006] The trade-off between process cost and performance is prominent: while adding metal pads can improve structural reliability, it increases material costs by approximately 15%-20%. Furthermore, the solder paste soldering process requires precision placement machines and AOI inspection equipment, with equipment investment costs exceeding 2 million yuan and high maintenance frequency, further driving up overall manufacturing costs. Utility Model Content

[0007] The purpose of this utility model is to provide a modular PCB light board that solves the technical problem of poor stability in light board assembly.

[0008] The objective of this utility model can be achieved through the following technical solutions:

[0009] A modular PCB light board includes a light board body, the light board body including a central connecting plate and multiple sets of connecting plates arranged in a linear array on both sides of the central connecting plate, and an assembly slot is formed between adjacent connecting plates for inserting the connecting plates when assembling the light board body. A number of LEDs are evenly installed on the central connecting plate and the connecting plates. Adjacent light board bodies are connected and assembled along the direction where no connecting plates are provided by assembly connectors.

[0010] The back of the lamp panel body is provided with a comb-shaped wiring layer corresponding to the connecting plug, and the comb-shaped wiring layer includes multiple parallel conductive lines.

[0011] Preferably, the central connecting plate has an integrated heat dissipation groove along its longitudinal direction at its center, and the integrated heat dissipation groove contains a heat-conducting material.

[0012] Preferably, a heat-insulating pad is fixedly provided on the outer periphery of the lamp panel body for heat insulation.

[0013] Preferably, the end of the connecting plate away from the central connecting plate is provided with a rounded chamfer.

[0014] Preferably, the thermally conductive material filled in the integrated heat dissipation groove is graphene thermally conductive adhesive or metal alloy powder.

[0015] Preferably, the conductive lines of the comb-shaped wiring layer are radially distributed in the extension area of ​​the connecting plug, and are connected to the lines at the central connecting plate through a gradual width transition.

[0016] Preferably, the thickness of the lamp panel body is 1.0-1.6mm, and the upper and lower surfaces are covered with a solder resist layer, with the window area of ​​the solder resist layer corresponding to the conductive lines of the comb-shaped wiring layer.

[0017] Preferably, the assembly connector includes a connecting support disposed between the two sets of lamp panel bodies, and both ends of the connecting support are fixedly connected with connecting blocks for insertion into the lamp panel bodies via connecting straps.

[0018] Preferably, the lamp panel body is provided with a connecting hole that mates with the connecting plug and a connecting groove that mates with the connecting strip.

[0019] Preferably, the central connecting plate is provided with reinforcing ribs.

[0020] The beneficial effects of this utility model are:

[0021] (1) The main body of the lamp panel is extended laterally by connecting the connecting plate and the assembly slot; adjacent main bodies of the lamp panel are fixed by the assembly connector, wherein the connecting block is inserted into the connecting hole of the main body of the lamp panel, and the connecting strip is embedded in the connecting groove to form a stable connection.

[0022] (2) The heat generated when the lamp beads are working is quickly conducted through the integrated heat dissipation groove in the central connecting plate. The graphene thermal conductive adhesive / metal alloy powder filled in the groove significantly improves the heat conduction efficiency. The heat insulation pad covers the outer periphery of the lamp board to prevent heat from spreading to the surrounding components. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 This is a structural schematic diagram of an assembled and combined PCB light board according to this utility model;

[0025] Figure 2 This is a schematic diagram of the PCB light board assembly structure of this utility model.

[0026] In the diagram: 100, main body of the lamp panel; 10, central connecting plate; 11, connecting insert plate; 12, assembly slot; 13, lamp bead; 14, integrated heat dissipation groove; 15, connecting socket; 16, with connecting groove; 17, heat insulation pad; 18, rounded chamfer; 200, assembly connector; 21, connecting support; 22, connecting strip; 23, connecting plug. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Please see Figure 1-2 As shown, this utility model is a modular PCB light board, including a light board body 100. The light board body 100 includes a central connecting plate 10 and multiple sets of connecting inserts 11 arranged in a linear array on both sides of the central connecting plate 10. An assembly slot 12 is formed between adjacent connecting inserts 11 for inserting the connecting inserts 11 when assembling the light board body 100. A number of LED beads 13 are evenly installed on the central connecting plate 10 and the connecting inserts 11. Adjacent light board bodies 100 are connected and assembled along the direction where no connecting inserts 11 are provided by an assembly connector 200.

[0031] The back of the lamp panel body 100 is provided with a comb-shaped wiring layer corresponding to the connecting plug 11. The comb-shaped wiring layer includes multiple parallel conductive lines.

[0032] It should be noted that the plug-in LED board structure reduces the PCB board area, which directly reduces the amount of board material used, lowers the material cost per board, and the reasonable panel design reduces waste of scrap materials, improves board utilization, and increases assembly efficiency.

[0033] In an optional embodiment, the central connecting plate 10 has an integrated heat dissipation groove 14 longitudinally formed at its center, and the integrated heat dissipation groove 14 is provided with a heat-conducting material.

[0034] It should be noted that the integrated heat sink 14 provides a centralized heat dissipation path, reduces LED junction temperature, and prevents light decay; it is also compatible with high-power Mini-LED applications.

[0035] In an optional embodiment, a heat insulation pad 17 for heat insulation is fixedly disposed on the outer periphery of the lamp panel body 100.

[0036] It should be noted that the heat insulation pad 17 is designed to prevent external heat from being conducted back into the PCB, thus protecting sensitive components.

[0037] In an optional embodiment, the end of the connecting plate 11 away from the central connecting plate 10 is provided with a rounded chamfer 18.

[0038] It should be noted that this reduces stress concentration during insertion and prevents cracking at the edge of slot 12.

[0039] In an optional embodiment, the thermally conductive material filled in the integrated heat sink 14 is graphene thermally conductive adhesive or metal alloy powder.

[0040] It should be noted that the thermal conductive materials, such as graphene thermal conductive adhesive or metal alloy powder, can increase the thermal conductivity by 50%-80%, accelerating the heat dissipation to the external heat sink.

[0041] In an optional embodiment, the conductive lines of the comb-shaped wiring layer are radially distributed in the extension region of the connecting plug 11 and are connected to the lines at the central connecting plate 10 by a gradient width transition.

[0042] It should be noted that by optimizing the current distribution, the local temperature rise is reduced, thereby improving the driving stability.

[0043] In an optional embodiment, the thickness of the lamp panel body 100 is 1.0-1.6mm, and the upper and lower surfaces are covered with solder resist layers, with the opening areas of the solder resist layers corresponding to the conductive lines of the comb-shaped wiring layer.

[0044] It should be noted that the solder mask protects the circuit from oxidation, and the windowed design facilitates soldering and testing.

[0045] In an optional embodiment, the assembly connector 200 includes a connecting support 21 disposed between two sets of lamp panel bodies 100, and both ends of the connecting support 21 are fixedly connected by connecting straps 22 to connecting blocks 23 for insertion into the lamp panel body 100.

[0046] It should be noted that the main body of the lamp panel 100 is fixed along the non-insertion board direction by the assembly connector 200 to realize the combination of multiple lamp panels and adapt to different size requirements.

[0047] In an optional embodiment, the lamp panel body 100 is provided with a connection socket 15 that mates with the connection plug 23 and a connection groove 16 that mates with the connection strip 22.

[0048] It should be noted that the design of the connecting socket 15 and the connecting groove 16 ensures that the plug 23 and the connecting strip 22 are accurately positioned, thus improving assembly efficiency.

[0049] In an optional embodiment, the central connecting plate 10 is provided with reinforcing ribs.

[0050] It should be noted that the addition of reinforcing ribs improves bending strength and reduces warping deformation during the reflow soldering process.

[0051] The working principle of this utility model is as follows: The lamp board body 100 expands laterally through the insertion and engagement of the connecting plate 11 and the assembly slot 12; adjacent lamp board bodies are fixed together by the assembly connector 200, wherein the connecting block 23 is inserted into the connecting hole 15 of the lamp board body, and the connecting strip 22 is embedded in the connecting groove 16 to form a stable connection. The heat generated by the lamp bead 13 during operation is quickly conducted through the integrated heat dissipation groove 14 in the central connecting plate 10, and the graphene thermal conductive adhesive / metal alloy powder filled in the groove significantly improves the heat conduction efficiency; the heat insulation pad 17 wraps around the outer periphery of the lamp board to prevent heat from diffusing to surrounding components; the rounded chamfer 18 at the end of the connecting plate 11 reduces mechanical interference during assembly; the comb-shaped wiring layer adopts radial conductive lines in the extension part to reduce signal delay.

[0052] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A modular PCB light panel, characterized by, The light panel includes a main body (100), which includes a central connecting plate (10) and multiple sets of connecting plates (11) arranged in a linear array on both sides of the central connecting plate (10). An assembly slot (12) is formed between adjacent connecting plates (11) for inserting the connecting plates (11) when assembling the light panel (100). A number of LED beads (13) are evenly installed on the central connecting plate (10) and the connecting plates (11). Adjacent light panel bodies (100) are connected and assembled along the direction where there are no connecting plates (11) by an assembly connector (200). The back of the lamp panel body (100) is provided with a comb-shaped wiring layer corresponding to the connecting plug (11), and the comb-shaped wiring layer includes multiple parallel conductive lines.

2. The assembled PCB light panel according to claim 1, wherein, The central connecting plate (10) has an integrated heat dissipation groove (14) along its longitudinal direction, and the integrated heat dissipation groove (14) contains heat-conducting material.

3. The assembled PCB light panel of claim 1, wherein, A heat insulation pad (17) for heat insulation is fixedly installed on the outer periphery of the lamp panel body (100).

4. The assembled PCB light panel of claim 1, wherein, The end of the connecting plate (11) away from the central connecting plate (10) is provided with a rounded chamfer (18).

5. The modular PCB light panel of claim 2, wherein, The thermally conductive material filled in the integrated heat dissipation groove (14) is graphene thermally conductive adhesive or metal alloy powder.

6. The modular PCB light panel of claim 1, wherein, The conductive lines of the comb-shaped wiring layer are radially distributed in the extension area of ​​the connecting plug (11), and are connected to the lines at the central connecting plate (10) by a gradual width transition.

7. The modular PCB light panel of claim 1, wherein, The thickness of the lamp panel body (100) is 1.0-1.6mm, and the upper and lower surfaces are covered with a solder resist layer. The opening area of ​​the solder resist layer corresponds to the conductive lines of the comb-shaped wiring layer.

8. The modular PCB light panel of claim 1, wherein, The assembly connector (200) includes a connecting support (21) disposed between two sets of lamp panel bodies (100), and both ends of the connecting support (21) are fixedly connected with connecting blocks (23) for insertion into the lamp panel body (100) by connecting straps (22).

9. The modular PCB light panel of claim 8, wherein, The lamp panel body (100) is provided with a connection socket (15) that mates with the connection plug (23) and a connection groove (16) that mates with the connection strip (22).

10. The assembled PCB light board according to claim 1, characterized in that, The central connecting plate (10) is provided with reinforcing ribs.

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