A pressure-resistant and bend-resistant COB lamp strip

Abstract

The utility model discloses a kind of COB lamp strips of pressure resistance and bending resistance, including protective layer, the bottom of the protective layer is fixedly connected with encapsulation layer, the bottom of the encapsulation layer is fixedly connected with fluorescent layer, the bottom of the fluorescent layer is fixedly connected chip layer, the bottom of the chip layer is fixedly connected conductive layer, the bottom of the conductive layer is fixedly connected with buffer enhancement layer, the bottom of the buffer enhancement layer is fixedly connected with substrate layer, the bottom of the substrate layer is connected with back adhesive layer. The utility model, buffer enhancement layer uses aramid nanofiber layer and graphene aerogel layer composite material, with honeycomb structure, can effectively absorb impact energy, improve flexibility and compressive strength, enhance the reliability of lamp strip in dynamic environment such as vibration, extrusion etc.;By setting up edge reinforcing layer by glass cloth layer at the edge of lamp strip, the tearing resistance and bending resistance of lamp strip can be greatly improved, to avoid edge breakage and mechanical damage when installing or dynamic application.

Description

Technical Field

[0001] This utility model relates to the field of COB light strip technology, specifically to a pressure-resistant and bend-resistant COB light strip. Background Technology

[0002] Pressure-resistant and bend-resistant COB (Chip On Board) light strips are a type of high-density linear light source that directly encapsulates LED chips on a flexible circuit board, possessing excellent mechanical and optical properties.

[0003] COB LED strips are widely used, including in dynamic lighting for automotive door frames. When car door frames are opened and closed, COB LED strips are subjected to impacts, vibrations, and pressure. Common COB LED strips have a shorter lifespan and lower reliability when used in such dynamic environments with vibrations and pressure. Furthermore, the edges of the LED strips are prone to breakage and mechanical damage during installation or dynamic application. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a pressure-resistant and bend-resistant COB light strip to solve the problems in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution; A pressure-resistant and bend-resistant COB LED strip includes a protective layer, an encapsulation layer fixedly connected to the bottom of the protective layer, a fluorescent layer fixedly connected to the bottom of the encapsulation layer, a chip layer fixedly connected to the bottom of the fluorescent layer, a conductive layer fixedly connected to the bottom of the chip layer, a buffer reinforcement layer fixedly connected to the bottom of the conductive layer, a substrate layer fixedly connected to the bottom of the buffer reinforcement layer, and an adhesive backing layer connected to the bottom of the substrate layer. The buffer reinforcement layer includes an aramid nanofiber layer, the top and bottom of which are fixedly connected to the conductive layer and the substrate layer, respectively, and a uniformly distributed graphene aerogel layer is embedded inside the aramid nanofiber layer.

[0006] As a further description of the above technical solution: A phase change heat dissipation layer is fixedly connected to the bottom of the substrate layer, and the bottom of the phase change heat dissipation layer is fixedly connected to the backing adhesive layer. The phase change heat dissipation layer is a composite material layer of paraffin and graphene.

[0007] As a further description of the above technical solution: An electromagnetic shielding layer is embedded inside the aramid nanofiber layer. The electromagnetic shielding layer is a composite mesh layer of silver nanowires and CNTs.

[0008] As a further description of the above technical solution: Both sides of the protective layer are fixedly connected to edge reinforcement layers, both of which are fiberglass cloth layers, and the opposite side of each edge reinforcement layer is fixedly connected to the substrate layer.

[0009] As a further description of the above technical solution: The edge reinforcement layer has stress relief grooves arranged at equal intervals, and the stress relief grooves are V-shaped.

[0010] Compared with existing technologies, the advantages of this utility model are: The buffer reinforcement layer of this solution uses a composite material of aramid nanofiber layer and graphene aerogel layer, which has a honeycomb structure. It can effectively absorb impact energy, improve flexibility and compressive strength, and enhance the reliability of the light strip under dynamic environments such as vibration and extrusion. By setting an edge reinforcement layer composed of fiberglass cloth layer at the edge of the light strip, the tear resistance and bending resistance of the light strip can be greatly improved, avoiding edge breakage and mechanical damage during installation or dynamic application. Attached Figure Description

[0011] Figure 1 One of the perspective views of this utility model; Figure 2 This is a second perspective view of the present utility model; Figure 3 This is a partial cross-sectional view of the present invention; Figure 4 This is a partial cross-sectional view of the buffer reinforcement layer in this utility model.

[0012] Explanation of the labels in the diagram: 1. Protective layer; 2. Encapsulation layer; 3. Fluorescent layer; 4. Chip layer; 5. Conductive layer; 6. Buffer reinforcement layer; 601. Aramid nanofiber layer; 602. Graphene aerogel layer; 7. Substrate layer; 8. Adhesive backing layer; 9. Phase change heat dissipation layer; 10. Electromagnetic shielding layer; 11. Edge reinforcement layer; 12. Stress relief groove. Detailed Implementation

[0013] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0014] To address the common issues of short lifespan and poor reliability of COB LED strips when used in dynamic environments such as vibration and compression, this solution provides Example 1: Please see Figures 1-4In this utility model: a pressure-resistant and bend-resistant COB light strip includes a protective layer 1, an encapsulation layer 2 fixedly connected to the bottom of the protective layer 1, a fluorescent layer 3 fixedly connected to the bottom of the encapsulation layer 2, a chip layer 4 fixedly connected to the bottom of the fluorescent layer 3, a conductive layer 5 fixedly connected to the bottom of the chip layer 4, a buffer reinforcement layer 6 fixedly connected to the bottom of the conductive layer 5, a substrate layer 7 fixedly connected to the bottom of the buffer reinforcement layer 6, and an adhesive backing layer 8 connected to the bottom of the substrate layer 7. The buffer reinforcement layer 6 includes an aramid nanofiber layer 601. The top and bottom of the aramid nanofiber layer 601 are fixedly connected to the conductive layer 5 and the substrate layer 7, respectively. A uniformly distributed graphene aerogel layer 602 is embedded inside the aramid nanofiber layer 601.

[0015] In this invention, the protective layer 1 is used for waterproofing, dustproofing, and UV aging resistance; the encapsulation layer 2 is used to protect the LED chip from mechanical damage; the fluorescent layer 3 is used to convert blue light into white light and adjust the color temperature; the chip layer 4 is the electro-optic conversion core area, which adopts a flip-chip structure; the conductive layer 5 is used for current transmission, heat dissipation channels, and mechanical support; the buffer reinforcement layer 6 is a composite material of aramid nanofiber layer 601 and graphene aerogel layer 602, which has a honeycomb structure, can effectively absorb impact energy, improve flexibility and compressive strength, and enhance the reliability of the light strip under dynamic environments such as vibration and extrusion; the substrate layer 7 is used for structural support, thermal management core, and electrical insulation; and the adhesive layer 8 is used for installation and fixation.

[0016] Please see Figure 3 The substrate layer 7 has a phase change heat dissipation layer 9 fixedly connected to its bottom. The bottom of the phase change heat dissipation layer 9 is fixedly connected to the backing adhesive layer 8. The phase change heat dissipation layer 9 is a composite material layer of paraffin and graphene.

[0017] In this invention, a phase change heat dissipation layer 9 of paraffin and graphene composite material is provided between the substrate layer 7 and the backing adhesive layer 8. This layer can efficiently absorb and distribute heat, reduce the peak temperature of the lamp strip, and solve the problems of heat accumulation and light decay under high current or high power conditions.

[0018] Please see Figure 4 Among them, an electromagnetic shielding layer 10 is embedded inside the aramid nanofiber layer 601, and the electromagnetic shielding layer 10 is a composite mesh layer of silver nanowires and CNTs.

[0019] In this invention, the electromagnetic shielding layer 10 disposed in the aramid nanofiber layer 601 suppresses high-frequency electromagnetic interference, improves signal stability, avoids signal crosstalk between the LED strip drive circuit and surrounding electronic equipment, and improves the reliability of the LED strip.

[0020] To address the issue of edge breakage and mechanical damage that can easily occur during LED strip installation or dynamic applications, this solution provides Example 2: Please see Figures 1-3 In this process, edge reinforcement layers 11 are fixedly connected to both the left and right sides of the protective layer 1. Both edge reinforcement layers 11 are fiberglass cloth layers, and the opposite side of the two edge reinforcement layers 11 is fixedly connected to the substrate layer 7.

[0021] In this invention, by setting an edge reinforcement layer 11 composed of fiberglass cloth at the edge of the light strip, the tear resistance and bending resistance of the light strip can be greatly improved, avoiding edge breakage and mechanical damage during installation or dynamic application.

[0022] Please see Figures 1-3 Among them, the edge reinforcement layer 11 is provided with stress relief grooves 12 arranged at equal intervals, and the stress relief grooves 12 are V-shaped.

[0023] In this invention, by providing stress relief grooves 12 on the edge reinforcement layer 11, the minimum dynamic bending radius of the light strip can be increased, the bending fatigue life can be improved, and the reliability of the light strip can be enhanced.

[0024] The above are merely preferred embodiments of this utility model; however, the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and its improved concept, should be included within the scope of protection of this utility model.

Claims

1. A pressure-resistant and bend-resistant COB light strip, comprising a protective layer (1), characterized in that: The bottom of the protective layer (1) is fixedly connected to the encapsulation layer (2), the bottom of the encapsulation layer (2) is fixedly connected to the fluorescent layer (3), the bottom of the fluorescent layer (3) is fixedly connected to the chip layer (4), the bottom of the chip layer (4) is fixedly connected to the conductive layer (5), the bottom of the conductive layer (5) is fixedly connected to the buffer reinforcement layer (6), the bottom of the buffer reinforcement layer (6) is fixedly connected to the substrate layer (7), and the bottom of the substrate layer (7) is connected to the adhesive layer (8). The buffer reinforcement layer (6) includes an aramid nanofiber layer (601), the top and bottom of which are fixedly connected to the conductive layer (5) and the substrate layer (7) respectively, and a uniformly distributed graphene aerogel layer (602) is embedded inside the aramid nanofiber layer (601).

2. The pressure-resistant and bend-resistant COB light strip according to claim 1, characterized in that: A phase change heat dissipation layer (9) is fixedly connected to the bottom of the substrate layer (7). The bottom of the phase change heat dissipation layer (9) is fixedly connected to the backing adhesive layer (8). The phase change heat dissipation layer (9) is a paraffin and graphene composite material layer.

3. The pressure-resistant and bend-resistant COB LED strip according to claim 1, characterized in that: An electromagnetic shielding layer (10) is embedded inside the aramid nanofiber layer (601), and the electromagnetic shielding layer (10) is a composite mesh layer of silver nanowires and CNTs.

4. The pressure-resistant and bend-resistant COB light strip according to claim 1, characterized in that: The protective layer (1) is fixedly connected to both the left and right sides with edge reinforcement layers (11). Both edge reinforcement layers (11) are fiberglass cloth layers, and the opposite side of the two edge reinforcement layers (11) is fixedly connected to the substrate layer (7).

5. A pressure-resistant and bend-resistant COB light strip according to claim 4, characterized in that: The edge reinforcement layer (11) has stress relief grooves (12) arranged at equal intervals, and the stress relief grooves (12) are V-shaped.

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