Anti-breaking enhanced LED lamp strip

Abstract

The utility model discloses an anti-breaking enhanced LED lamp band, which relates to the technical field of LED lamp bands, and comprises a flexible substrate main body, a plurality of uniformly distributed first accommodating grooves are arranged at the bottom of the flexible substrate main body, LED light sources are welded in the first accommodating grooves, an anti-breaking assembly is arranged at the top of the flexible substrate main body, and the anti-breaking assembly is arranged on the bottom of the flexible substrate main body. The anti-fracture assembly is arranged on the flexible substrate body and used for enhancing the overall anti-fracture effect, the anti-fracture assembly comprises a U-shaped polyurethane elastomer, the top of the flexible substrate body is covered with the U-shaped polyurethane elastomer, and a plurality of second containing grooves which are horizontally and evenly distributed are formed in the bottom of the flexible substrate body. The high-strength and high-elasticity enhancement layer is accurately implanted between the adjacent LED light sources on the flexible substrate main body to actively bear and disperse concentrated stress generated when the flexible substrate main body is bent, so that the flexible substrate main body and the LED light sources are effectively protected, fracture failure is prevented, and the fracture prevention effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of LED light strip technology, specifically to an anti-breakage enhanced LED light strip. Background Technology

[0002] LED light strips are made by assembling LEDs on a strip-shaped FPC (flexible printed circuit board) or PCB (rigid PCB), named for their ribbon-like shape. Due to their long lifespan, energy efficiency, and environmental friendliness, they are increasingly gaining popularity in various decorative industries.

[0003] For example, Chinese patent application CN202422172629.6 describes an LED light strip, including LED beads, and a substrate layer, a conductive layer, and a protective layer arranged sequentially. The conductive layer is formed by silver paste printed on the surface of the substrate layer, and the resistivity of the silver paste is ≤1.5*10⁻⁵ Ω·cm. The protective layer has hollow areas that expose the conductive layer, and a chemically plated gold layer is provided at the corresponding hollow areas of the conductive layer. The solder joints of the LED beads are soldered to the chemically plated gold layer using solder paste. A heat dissipation layer formed by thermally conductive ink is provided on the side of the substrate layer opposite to the conductive layer. By printing thermally conductive ink on the bottom surface of the substrate layer of the light strip, the heat dissipation performance of the light strip is improved, solving the problem of high-current heat generation in silver paste printed circuit boards, and enabling the application of silver paste printed circuit boards in side-emitting LED light strips. The resistance of the conductive layer is not higher than 1.5*10⁻⁵ Ω·cm, improving the conductivity of the conductive layer and also solving the problem of high-current heat generation in silver paste printed circuit boards.

[0004] However, in actual use, although the above-mentioned device has a certain degree of flexibility, when subjected to repeated bending, excessive bending or sharp-angle bending, its substrate layer is prone to fatigue cracks or even breakage at the stress concentration point of bending, resulting in an open circuit and thus affecting the overall service life. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a fracture-resistant enhanced LED light strip. By embedding a high-strength, high-elasticity reinforcing layer between adjacent LED light sources on a flexible substrate, the reinforcing layer actively bears and disperses the concentrated stress generated when the flexible substrate is bent, thereby effectively protecting the flexible substrate and the LED light sources, preventing breakage failure, and ensuring the fracture-resistant effect. This effectively solves the problems in the background technology.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a breakage-resistant enhanced LED light strip, comprising a flexible substrate body, wherein a plurality of evenly distributed first receiving grooves are provided at the bottom of the flexible substrate body, and an LED light source is welded inside the first receiving groove, which facilitates the improvement of welding stability and avoids displacement;

[0007] The top of the flexible substrate body is provided with an anti-breakage component to enhance the overall anti-breakage effect;

[0008] The anti-fracture component includes a U-shaped polyurethane elastomer, which covers the top of the flexible substrate body. The bottom of the flexible substrate body has several horizontally and evenly distributed second slots, which are respectively located between two adjacent first receiving slots. The second slots have a reinforcing layer inside, which can absorb bending stress by utilizing its high elasticity, prevent the flexible substrate body from brittle fracture, and avoid stress concentration.

[0009] Preferably, the reinforcing layer comprises high-strength fibers and fine metal wires, and the high-strength fibers and fine metal wires are embedded in the second groove using a plain weave knitting method. The fibers and metal wires are interwoven and embedded to prevent material delamination and improve the bonding tightness between the reinforcing layer and the second groove, ensuring coordinated deformation when bent.

[0010] Preferably, slots are provided on both sides of the flexible substrate body, and lateral reinforcing strips are fixedly provided inside the two slots to significantly improve the lateral bending strength and prevent cracking under lateral stress during installation.

[0011] Preferably, the lateral reinforcing strip is made of a large area of ​​fine spring steel wire, which provides excellent resilience, is not easily deformed by repeated bending, and extends the service life of this utility model.

[0012] Preferably, the bottom of the flexible substrate body is fixedly covered with a light-transmitting encapsulating adhesive layer, which helps to protect the circuit from moisture and dust corrosion, while ensuring that the light transmittance is >90%, which helps to protect the circuit and LED light source set inside the flexible substrate body, and allows light to pass through, ensuring the light projection effect. Several horizontally uniformly distributed reinforcing layers are embedded inside the light-transmitting encapsulating adhesive layer, which helps to accurately avoid heat sources and prevent high temperature from weakening the performance of the reinforcing layers.

[0013] Preferably, several of the reinforcing layers are respectively disposed between two adjacent LED light sources, which facilitates the provision of support at the gap between adjacent LED light sources and reduces substrate deformation when bent.

[0014] Compared with the prior art, this utility model provides a breakage-resistant enhanced LED light strip, which has the following beneficial effects:

[0015] When the outer side is bent, the U-shaped polyurethane elastomer is stretched. Its high strength and elasticity allow it to withstand most of the tensile force, significantly distributing and reducing the tensile stress acting on the flexible substrate body below, preventing the flexible substrate body from being pulled apart. When the inner side is bent, the reinforcing layer, lateral reinforcing strips, and reinforcing layer together provide support and buffering, resisting compressive deformation and preventing the LED light source and its fragile solder joints from being damaged by excessive compression. Furthermore, the anti-breakage components are spaced along the length direction, distributing the point stress originally concentrated in the flexible substrate body area more evenly to the wider and tougher anti-breakage component joint surface, avoiding excessive stress concentration in local areas. Thus, without significantly increasing the overall stiffness, the overall fracture resistance and durability of this invention under harsh bending conditions are greatly improved, thereby extending the service life of the LED light source. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram showing the overall structure of this utility model separated from the rest.

[0018] Figure 3 A schematic diagram of the overall structure of this utility model without the U-shaped polyurethane elastomer structure;

[0019] Figure 4 This is a cross-sectional view of the light-transmitting encapsulating adhesive layer structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the reinforcing layer of this utility model.

[0021] In the figure: 1 Flexible substrate body, 2 Anti-breakage component, 3 Transparent encapsulating adhesive layer, 4 First receiving groove, 5 Second receiving groove, 6 LED light source;

[0022] 21 U-shaped polyurethane elastomer, 22 reinforcing layer, 23 groove, 24 lateral reinforcing strip, 25 reinforcing layer;

[0023] 2201 high-strength fiber, 2202 fine metal wire. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] like Figure 1-5 As shown, this utility model provides an anti-breakage enhanced LED light strip, including a flexible substrate body 1. The bottom of the flexible substrate body 1 is provided with a plurality of evenly distributed first receiving grooves 4. An LED light source 6 is welded inside the first receiving grooves 4 to improve welding stability and avoid displacement.

[0026] like Figure 1-5 As shown, the top of the flexible substrate body 1 is provided with an anti-breakage component 2 to enhance the overall anti-breakage effect. The anti-breakage component 2 includes a U-shaped polyurethane elastomer 21, which covers the top of the flexible substrate body 1. The bottom of the flexible substrate body 1 has several horizontally and evenly distributed second slots 5, which are respectively located between two adjacent first receiving slots 4. The second slots 5 are provided with a reinforcing layer 22 inside, which can absorb bending stress by utilizing its high elasticity to prevent brittle fracture of the flexible substrate body 1 and avoid stress concentration. The reinforcing layer 22 includes high-strength fibers 2201 and fine metal wires 2202, and the high-strength fibers 2201 and fine metal wires 2202 are embedded in the second slots 5 by plain weave knitting, interlacing and embedding to avoid material delamination and improve the bonding tightness between the reinforcing layer 22 and the second slots 5, ensuring coordinated deformation when bent.

[0027] The flexible substrate body 1 has slots 23 on both side walls, and lateral reinforcing strips 24 are fixedly installed inside each slot 23, which significantly improves the lateral bending strength and prevents cracking under lateral force during installation. The lateral reinforcing strips 24 are made of a large area of ​​fine spring steel wire, providing excellent resilience and not easily deformed by repeated bending, thus extending the service life of this utility model. The bottom of the flexible substrate body 1 is fixedly covered with a light-transmitting encapsulating adhesive layer 3, which helps to protect the circuit from moisture and dust corrosion, while ensuring that the light transmittance is >90%, which helps to protect the circuit and LED light source 6 set inside the flexible substrate body 1, and allows light to pass through, ensuring the light projection effect.

[0028] The transparent encapsulating adhesive layer 3 has several horizontally and evenly distributed reinforcing layers 25 embedded inside, which makes it easy to accurately avoid heat sources and prevent high temperature from weakening the performance of the reinforcing layers. Several reinforcing layers 25 are respectively disposed between two adjacent LED light sources 6, which makes it easy to provide support at the gap between adjacent LED light sources 6 and reduce substrate deformation when bending.

[0029] By incorporating the anti-fracture component 2, the reinforcing layer 22 and the strengthening layer 25 are respectively positioned between adjacent LED light sources 6, specifically in the relatively fragile areas where stress is most concentrated on the flexible substrate body 1 and the light-transmitting encapsulating adhesive layer 3. They do not cover or only slightly cover the top of the LED light source 6, but primarily fill and reinforce the gaps between the flexible substrate body 1, the light-transmitting encapsulating adhesive layer 3, and the LED light source 6. Their materials must possess tensile strength, flexural modulus, and fatigue resistance higher than those of the flexible substrate body 1.

[0030] Furthermore, when the flexible substrate body 1 is bent, the outer area of ​​the bend bears tensile stress, while the inner area of ​​the bend bears compressive stress. In this invention, by setting the anti-breakage component 2, the blank area between adjacent LED light sources 6 is fully covered. When the outer side is bent, the U-shaped polyurethane elastomer 21 is stretched. Its high strength and elasticity enable it to withstand most of the tensile force, significantly sharing and reducing the tensile stress acting on the lower flexible substrate body 1, preventing the flexible substrate body 1 from being pulled apart. When the inner side is bent, the reinforcing layer 22, the lateral reinforcing strip 24, and the reinforcing layer 25 jointly provide support and buffer, resisting compressive deformation and preventing the LED light source 6 and its fragile solder joints from being damaged by excessive compression. At the same time, the anti-breakage component 2 is set at intervals along the length direction, distributing the point stress originally concentrated in the area of ​​the flexible substrate body 1 more evenly to the wider and stronger anti-breakage component 2 joint surface, avoiding excessive stress concentration in local areas. Thus, without significantly increasing the overall stiffness, the overall anti-breakage ability and durability of this invention under harsh bending conditions are greatly improved, thereby extending the service life of the LED light source 6.

[0031] 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 illustrative of 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 breakage-resistant enhanced LED light strip, comprising a flexible substrate body (1), characterized in that: The bottom of the flexible substrate body (1) is provided with several evenly distributed first receiving grooves (4), and an LED light source (6) is welded inside the first receiving groove (4). The flexible substrate body (1) is provided with an anti-breakage component (2) on the top to enhance the overall anti-breakage effect; The anti-fracture component (2) includes a U-shaped polyurethane elastomer (21), which covers the top of the flexible substrate body (1). The bottom of the flexible substrate body (1) is provided with a number of horizontally uniformly distributed second slots (5). The number of second slots (5) are respectively located between two adjacent first receiving slots (4). The second slots (5) are provided with a reinforcing layer (22).

2. The anti-breakage enhanced LED light strip according to claim 1, characterized in that: The reinforcing layer (22) includes high-strength fibers (2201) and fine metal wires (2202), and the high-strength fibers (2201) and fine metal wires (2202) are embedded in the second groove (5) by plain knitting.

3. The anti-breakage enhanced LED light strip according to claim 2, characterized in that: The flexible substrate body (1) has slots (23) on both sides, and lateral reinforcing strips (24) are fixedly installed inside the two slots (23).

4. The anti-breakage enhanced LED light strip according to claim 3, characterized in that: The lateral reinforcing strip (24) is made of a large area of ​​fine spring steel wire.

5. The anti-breakage enhanced LED light strip according to claim 4, characterized in that: The bottom of the flexible substrate body (1) is fixedly covered with a light-transmitting encapsulating adhesive layer (3), and a number of horizontally uniformly distributed reinforcing layers (25) are embedded inside the light-transmitting encapsulating adhesive layer (3).

6. The anti-breakage enhanced LED light strip according to claim 5, characterized in that: Several of the reinforcement layers (25) are respectively disposed between two adjacent LED light sources (6).

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