An LED light strip, an improved LED circuit network, and an improved LED light network

Abstract

The present invention relates to an LED light strip, characterized in that it comprises: a flat enameled wire and a metal foil strip; the metal foil strip is wound or bonded on the flat enameled wire, a metal core is exposed at an opening in the flat enameled wire, one electrode of the LED is welded to the opening of the enameled wire, and the other electrode is welded to the metal foil strip. The LED light strip is used as a warp and woven into a mesh with conductive filaments, the woven mesh is used as a heat sink for the LED light strip, the intersections of the conductive filaments and the LED light strip are welded, and the intersections between the conductive filaments are welded. The LED light strip and the circuit network with self-formed conductive paths disclosed by the present invention have simple processing technology, no chemical pollution, and much higher heat dissipation performance than existing LED light strips.

Description

Technical Field

[0001] The invention relates to an LED light strip, in particular to an LED light strip based on flat enameled wire and copper foil, and an improved LED circuit network and LED light network. Background Art

[0002] In the existing technology, LED light strips are made of aluminum substrates or flexible soft boards (FPC) through the printed circuit board process to produce circuit graphics, including: opening the board - brushing the board - punching - black holes - wet film - exposure - cleaning - corrosion - cleaning - solder mask - exposure - cleaning - tinning and other process steps. The process is complicated and there are multiple chemical pollution links.

[0003] The circuit network method proposed in CN108712815A for making LED light nets and the mesh substrate method proposed in CN105263259A for making LED light nets both have the problems of large material waste, difficulty in combining the circuit layer and the mesh layer, poor flatness of the circuit layer and the mesh layer, complex manufacturing process, low manufacturing efficiency, and difficulty in high current application.

[0004] In order to reduce chemical pollution in the manufacturing process of LED light strips, to improve the production efficiency of LED light nets, to reduce material waste, and to solve the problem of difficulty in combining the circuit layer and the net layer, and the poor flatness of the circuit layer and the net layer, the designer has finally created this invention with real practical value after continuous research and design, repeated trial samples and improvements. Summary of the invention

[0005] The main purpose of the present invention is to overcome the chemical pollution in the existing LED production process, the shortcomings of large material waste and low LED welding efficiency in the existing LED light net production technology, and to solve the problem of difficulty in combining the circuit layer and the net layer, and the poor flatness of the circuit layer and the net layer. A new structure of LED light strip and a new structure of LED light net are provided. The technical problem to be solved is to introduce new materials - flat enameled wire and metal foil strip to make LED light strips, and weave this LED light strip into a metal net or a carbon fiber net, and the net serves as a heat sink, conductor, and carrier of the LED light strip.

[0006] The purpose of the present invention and the solution to the technical problem are achieved by adopting the following technical solutions.

[0007] An LED light strip according to the present invention is characterized in that it comprises:

[0008] Flat enameled wire and metal foil strip;

[0009] The combination of the flat enameled wire and the metal foil strip includes the following four methods:

[0010] The first type is that the length direction of the metal foil is parallel to the length direction of the flat enameled wire, the width of the metal foil is narrower than the flat enameled wire, the metal foil is adhered to the front of the flat enameled wire, and a hole is opened on the front of the flat enameled wire that is not covered by the metal foil. The opening is to only strip off the insulation layer of the flat enameled wire without damaging the metal core of the flat enameled wire. The hole maintains a certain insulation distance from the metal foil, and the two electrodes of the light-emitting LED are respectively welded to the metal foil and the metal core at the opening of the flat enameled wire, thus forming a parallel-connected LED light strip;

[0011] The second type is that the length direction of the metal foil strip is perpendicular to the length direction of the flat enameled wire, the metal foil strip is wound around the flat enameled wire for one or several times to form a copper foil ring, a plurality of the copper foil rings are wound around the flat enameled wire, and insulating intervals are reserved between the copper foil rings. The copper foil rings are connected with metal wires or metal foils on the back of the flat enameled wire, and a hole is opened on the front of the flat enameled wire where it is not covered by the metal foil strip. The opening is to only strip off the insulating layer of the flat enameled wire without damaging the metal core of the flat enameled wire. The hole maintains a certain insulating distance from the metal foil strip, and the two electrodes of the light-emitting LED are respectively welded to the metal foil strip and the metal core at the opening of the flat enameled wire, thus forming a parallel-connected LED light strip;

[0012] The third type is that the length direction of the metal foil strip is wound at a certain angle β1 with the length direction of the flat enameled wire, acos (W / 2b)> β1> 0, where W is the width of the metal foil strip, b is the width of the flat enameled wire, the metal foil strip does not overlap on the flat enameled wire, a gap is left, a hole is opened at the insulating gap, the opening is to only strip the insulation layer of the flat enameled wire without damaging the metal core of the flat enameled wire, the hole maintains a certain insulation distance with the metal foil strip, and the two electrodes of the light-emitting LED are respectively welded on the metal foil strip and the metal core at the opening of the flat enameled wire, thus forming a parallel-connected LED light strip;

[0013] The fourth type is that the length direction of the metal foil is wound at a certain angle β2 with the length direction of the flat enameled wire, π / 2>β2≧acos(W / 2b), wherein W is the width of the metal foil, b is the width of the flat enameled wire, the metal foil will overlap on the flat enameled wire, a first opening is set on the metal foil, the first opening is for only stripping off the metal foil without damaging the insulating skin of the flat enameled wire, a second opening is set in the first opening, the second opening is for only stripping off the insulating layer of the flat enameled wire without damaging the metal core of the flat enameled wire, the second opening maintains a certain insulation distance from the metal foil, the two electrodes of the light-emitting LED are respectively welded to the metal foil and the metal core at the second opening, thus forming a parallel-connected LED light strip.

[0014] Furthermore, the flat enameled wire has a thickness of 0.1-2 mm and a width of 2-10 mm; the metal foil has a thickness of 0.01-0.2 mm and a width of 2-20 mm.

[0015] Furthermore, the metal foil tape may be a copper foil tape or a copper foil tape containing an adhesive layer or a tinned copper foil tape.

[0016] An improved circuit network with self-formed conductive paths proposed in the present invention is characterized in that it includes the above-mentioned LED light strip and conductive filaments, wherein the LED light strip is woven into a network with one or more warp threads and the conductive filaments, the conductive filaments are electrically connected to the metal foil strip of the LED light strip, and the conductive filaments and the core wires of the flat enameled wires of the LED light strip are respectively welded to two electrodes of a DC power supply to light up the LED.

[0017] Furthermore, the conductive filaments are welded at the contact points with the metal foil strip of the LED light strip; and the conductive filaments are welded at the intersection points with each other.

[0018] Furthermore, the mesh of the net is square, diamond or triangular, its weaving method is plain weave, twill weave or satin weave, its mesh type is plain mesh or mat mesh, its mesh layer method is single-layer mesh, multi-layer woven mesh or multi-layer stacked mesh; the diameter of the conductive filament is 0.1-2 mm; the aperture of the net is 10 mesh-60 mesh.

[0019] Furthermore, the conductive filaments as the weft are pressed on the upper surface of the LED to dissipate heat from the upper surface of the LED.

[0020] Furthermore, the LED can be welded first and then woven, or can be woven first and then welded.

[0021] Furthermore, the conductive filaments are metal filaments or carbon fiber filaments.

[0022] According to the present invention, an improved LED light net is proposed, characterized in that it includes the above-mentioned LED light strip and a metal woven mesh, the front or back metal foil strip of the LED light strip is welded to the metal woven mesh, and the metal woven mesh serves as a carrier and heat sink of the LED light strip.

[0023] It can be seen from the above technical scheme that the LED light strip proposed by the present invention has at least the following advantages: the paint film thickness of the flat enameled wire is about 30-50 microns, with polyurethane and polyamide-imide paint films, the long-term heat-resistant temperature is 180℃ and 220℃, and the heat-resistant temperature of 1 minute is higher than 300℃, so it can withstand the temperature of the reflow soldering process. The selected metal foil tape is very thin (generally tens of microns) and can be tightly wound on the flat enameled wire, so the flatness of the welding surface can be maintained. The metal foil tape is repeatedly tightly wound on the flat enameled wire, and even if the adhesive layer of the metal foil tape loses its adhesiveness at a high temperature of 300℃, the metal foil tape can be tightly wound on the flat enameled wire. The existing process equipment can be modified to meet the process requirements of metal foil tape winding flat enameled wire and the process requirements of opening holes on the flat enameled wire. At the same time, the LED light strip proposed by the present invention can meet the requirements of silk screen printing, patch and reflow soldering processes in terms of hardness, flatness and bonding strength, so the LED light strip of the present invention can be industrially produced with high efficiency.

[0024] It can be seen from the above technical solutions that an improved circuit network with a self-formed conductive path and an improved LED lamp network proposed in the present invention both utilize a woven mesh to dissipate heat for the LED light strip. In order to improve the heat dissipation performance, the wires of the woven mesh are welded at the intersections with the metal foil strips of the LED light strip, and the wires of the woven mesh are welded at the intersections with each other. Therefore, the heat generated by the LED can be transferred to the metal foil strip and the flat enameled wire through the welding points, and then transmitted to the entire woven mesh through the welding points between the metal foil strip and the woven mesh wires and the welding points between the woven mesh wires, so that the thermal resistance of the entire heat conduction path is minimized; at the same time, the thermal convection coefficient of the thin wires is very large (up to several hundred watts / square meter), so the improved LED lamp network proposed in the present invention has high heat dissipation performance and has the advantages of light weight and flexibility; furthermore, part of the weft wires of the woven mesh are in close contact with the upper surface of the LED lamp beads, and the heat dissipation of the LED from the upper surface is further improved to further improve the heat dissipation effect of the LED.

[0025] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a combination method of a flat enameled wire and a metal foil strip of an LED light strip according to an embodiment of the present invention. 1 is a front view schematic diagram (upper) and a top view schematic diagram (lower).

[0027] Figure 2 It is a top view schematic diagram of a combination method 2 of a flat enameled wire and a metal foil strip of an LED light strip according to an embodiment of the present invention.

[0028] Figure 3It is a top view schematic diagram of a combination method 3 of a flat enameled wire and a metal foil strip of an LED light strip according to an embodiment of the present invention.

[0029] Figure 4 It is a top view schematic diagram of a combination method 4 of a flat enameled wire and a metal foil strip of an LED light strip according to an embodiment of the present invention.

[0030] Figure 5 It is a top view schematic diagram of an improved circuit network with self-formed conductive paths according to an embodiment of the present invention.

[0031] Figure 6 It is a top view schematic diagram of an improved LED light network according to an embodiment of the present invention.

[0032] 1. Flat enameled wire 2. Metal foil strip 3. Anode of 2835 LED lamp bead 4. Cathode of 2835 LED lamp bead 5. Gap formed by copper foil strip on flat enameled wire 6. First opening is set on copper foil strip 7. Second opening is set in first opening 8. Copper wire 9. Copper wire weft for heat dissipation on upper surface of LED 10. Metal woven mesh 11. 2835 LED lamp bead. DETAILED DESCRIPTION

[0033] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation method, structure, characteristics and effects of an LED light strip, an improved circuit network with self-formed conductive paths and an improved LED light network proposed in accordance with the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0034] like Figure 1 The invention relates to an LED light strip proposed by combining a flat enameled wire and a metal foil strip according to the first combination mode of claim 1. The upper part is a front view schematic diagram, and the lower part is a top view schematic diagram. The flat enameled wire (1) is a copper core with a width of 4 mm, a thickness of 1 mm, a paint film thickness of 30 um, and a paint film temperature resistance level of 220°C. The metal foil strip (2) is a copper tape with a width of 1.5 mm and a thickness of 50 um. The metal foil strip (2) is vertically adhered to the rear side of the flat enameled wire (1). A hole is opened in the flat enameled wire (1), and only the surface paint film is peeled off without damaging the copper core to produce the negative electrode (4) of the 2835 LED lamp bead, which has an insulation distance of 0.5 mm from the metal foil strip (2). The positive electrode (3) of the 2835 LED lamp bead is arranged on the metal foil strip (2). The positive electrode of a DC power supply (not shown in the figure) is connected to the metal foil strip (2), and the negative electrode of the DC power supply (not shown in the figure) is connected to the core wire of the flat enameled wire (1) to light up all the LED lamp beads.

[0035] like Figure 2The invention is a top view schematic diagram of an LED light strip proposed by combining a flat enameled wire and a metal foil strip according to the second combination mode of claim 1. The flat enameled wire (1) is a copper core with a width of 4 mm, a thickness of 1 mm, a paint film thickness of 30 um, and a paint film temperature resistance level of 220°C. The metal foil strip (2) is a copper tape with a width of 2.5 mm and a thickness of 50 um. The metal foil strip (2) is horizontally adhered to the flat enameled wire (1) with a circle every 10 mm. A hole is opened in the flat enameled wire (1), and only the surface paint film is peeled off without damaging the copper core to produce the negative electrode (4) of the 2835 LED lamp bead with an insulation distance of 0.6 mm from the metal foil strip (2). The positive electrode (3) of the 2835 LED lamp bead is arranged on the metal foil strip (2). All LED lamp beads can be lit by connecting the positive electrode of a DC power supply (not shown in the figure) to all the metal foil strips (2) and connecting the negative electrode of the DC power supply (not shown in the figure) to the core wire of the flat enameled wire (1).

[0036] like Figure 3 The present invention is a top view schematic diagram of an LED light strip proposed by combining a flat enameled wire and a metal foil strip according to the third combination mode of claim 1. The flat enameled wire (1) is a copper core with a width of 4 mm, a thickness of 1 mm, a paint film thickness of 30 um, and a paint film temperature resistance level of 220°C. The metal foil strip (2) is a copper tape with a width of 3.66 mm and a thickness of 50 um. The metal foil strip (2) is wound at a 45-degree angle and adhered to the flat enameled wire (1). The gap (5) formed by the copper foil strip on the flat enameled wire is 2.8 mm. A hole is opened in the flat enameled wire (1), and only the surface paint film is peeled off without damaging the copper core to produce the positive electrode (3) of the 2835 LED lamp bead. There is an insulation distance of 0.4 mm between the flat enameled wire (1) and the negative electrode (4) of the 2835 LED lamp bead. All LED lamp beads can be lit by connecting the positive electrode of a DC power supply (not shown in the figure) to the core wire of the flat enameled wire (1) and the negative electrode of the DC power supply (not shown in the figure) to the metal foil strip (2).

[0037] like Figure 4The present invention is a top view schematic diagram of an LED light strip proposed by combining flat enameled wire and metal foil strip according to the fourth combination mode of claim 1, wherein the flat enameled wire (1) is a copper core with a width of 3.5 mm, a thickness of 1 mm, a paint film thickness of 30 um, and a paint film temperature resistance level of 220°C, the metal foil strip (2) is a copper tape with a width of 5.67 mm and a thickness of 50 um, the metal foil strip (2) is wound at a 36-degree direction and adhered to the flat enameled wire (1), the copper foil strip completely covers the flat enameled wire, and no gap is formed, a first opening (6) is set on the metal foil strip (2) to only peel off the surface paint film without damaging the paint film of the flat enameled wire (1), a second opening (7) is set in the first opening (6) to only peel off the insulation layer of the flat enameled wire without damaging the metal core of the flat enameled wire, the second opening (7) has an insulation distance of 0.3 mm with the metal foil strip (2), the positive pole (3) of the 2835 LED lamp bead is set in the second opening (7), and the 2835 The negative electrode (4) of the LED lamp bead is arranged on the metal foil strip (2). All the LED lamp beads can be lit by connecting the positive electrode of a DC power supply (not shown in the figure) to the core wire of the flat enameled wire (1) and the negative electrode of the DC power supply (not shown in the figure) to the metal foil strip (2).

[0038] like Figure 5 A top view schematic diagram of an improved circuit network with self-formed conductive paths, according to Figure 3 The LED light strip is made in a manner, wherein the LED light strip is used as a warp and is woven into a mesh by a plain weave method with a copper wire (8) having a diameter of 0.2 mm, and the mesh wire spacing is 1 mm. The copper wire weft (9) passing through the 2835 LED lamp beads (11) is specially arranged on the upper surface of the LED lamp beads, so that the heat generated by the fluorescent glue on the upper surface of the LED lamp beads is conducted to the metal mesh through the copper wire weft (9); the copper wire (8) is welded at the intersection with the metal foil strip (2), and the copper wire (8) is welded at the intersection with the copper wire (8), so as to ensure the best heat conduction effect between the copper wire (8) and the metal foil strip (2) and the best heat conduction effect of the entire mesh. The positive electrode of a DC power supply (not shown in the figure) is connected to the core wire of the flat enameled wire (1), and the negative electrode of the DC power supply (not shown in the figure) is connected to the copper wire (8), so that all 2835 LED lamp beads (11) can be lit.

[0039] like Figure 6 This is a top view diagram of an improved LED light grid. Figure 3 The LED light strip is made in this way, and the metal foil strip (2) on the back of the LED light strip is welded to the metal braided mesh (10); the metal braided mesh (10) is braided with copper wires, the wire diameter is 0.2 mm, the wire is woven in a plain weave, the mesh wire spacing is 1 mm, and the mesh wires are welded at the intersection. The positive electrode of the DC power supply (not shown in the figure) is connected to the core wire of the flat enameled wire (1), and the negative electrode of the DC power supply (not shown in the figure) is connected to the metal braided mesh (10) to light up all 2835 LED lamp beads (11).

[0040] The above are only several embodiments of the present invention and are not intended to limit the present invention in any form. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. An LED light strip, characterized in that It includes: Flat enameled wire and metal foil strip; The combination of the flat enameled wire and the metal foil strip includes the following four methods: The first type is that the length direction of the metal foil is parallel to the length direction of the flat enameled wire, the width of the metal foil is narrower than the flat enameled wire, the metal foil is adhered to the front of the flat enameled wire, and a hole is opened on the front of the flat enameled wire that is not covered by the metal foil. The opening is to only strip off the insulation layer of the flat enameled wire without damaging the metal core of the flat enameled wire. The hole maintains a certain insulation distance from the metal foil, and the two electrodes of the light-emitting LED are respectively welded to the metal foil and the metal core at the opening of the flat enameled wire, thus forming a parallel-connected LED light strip; The second type is that the length direction of the metal foil strip is perpendicular to the length direction of the flat enameled wire, the metal foil strip is wound around the flat enameled wire for one or several times to form a copper foil ring, a plurality of the copper foil rings are wound around the flat enameled wire, and insulating intervals are reserved between the copper foil rings. The copper foil rings are connected with metal wires or metal foils on the back of the flat enameled wire, and a hole is opened on the front of the flat enameled wire where it is not covered by the metal foil strip. The opening is to only strip off the insulating layer of the flat enameled wire without damaging the metal core of the flat enameled wire. The hole maintains a certain insulating distance from the metal foil strip, and the two electrodes of the light-emitting LED are respectively welded to the metal foil strip and the metal core at the opening of the flat enameled wire, thus forming a parallel-connected LED light strip; The third type is that the length direction of the metal foil strip is wound at a certain angle β1 with the length direction of the flat enameled wire, acos (W / 2b)>β1>0, where W is the width of the metal foil strip, b is the width of the flat enameled wire, the metal foil strip does not overlap on the flat enameled wire, a gap is left, a hole is opened at the gap, the opening is to only strip the insulation layer of the flat enameled wire without damaging the metal core of the flat enameled wire, the hole maintains a certain insulation distance from the metal foil strip, and the two electrodes of the light-emitting LED are respectively welded on the metal foil strip and the metal core at the opening of the flat enameled wire, thus forming a parallel-connected LED light strip; The fourth type is that the length direction of the metal foil is wound at a certain angle β2 with the length direction of the flat enameled wire, π / 2>β2≧acos(W / 2b), wherein W is the width of the metal foil, b is the width of the flat enameled wire, the metal foil will overlap on the flat enameled wire, a first opening is set on the metal foil, the first opening is for only stripping off the metal foil without damaging the insulating skin of the flat enameled wire, a second opening is set in the first opening, the second opening is for only stripping off the insulating layer of the flat enameled wire without damaging the metal core of the flat enameled wire, the second opening maintains a certain insulation distance from the metal foil, the two electrodes of the light-emitting LED are respectively welded to the metal foil and the metal core at the second opening, thus forming a parallel-connected LED light strip.

2. The LED light strip according to claim 1, characterized in that The flat enameled wire has a thickness of 0.1-2 mm and a width of 2-10 mm; the metal foil has a thickness of 0.01-0.2 mm and a width of 2-20 mm.

3. The LED light strip according to claim 1, characterized in that The metal foil tape is a copper foil tape or a copper foil tape containing an adhesive layer or a tinned copper foil tape.

4. An improved circuit network with self-forming conductive paths, characterized in that It includes the LED light strip and conductive filaments as described in any one of claims 1-3, wherein the LED light strip is woven into a mesh with one or more warp threads and the conductive filaments, the conductive filaments are electrically connected to the metal foil strip of the LED light strip, and the conductive filaments and the core wires of the flat enameled wires of the LED light strip are respectively welded to two electrodes of a DC power supply, so that the LED can be lit.

5. An improved self-conducting path circuit network according to claim 4, characterized in that The conductive filaments are welded at the contact points with the metal foil strip of the LED light strip; and the conductive filaments are welded at the intersection points with each other.

6. An improved self-conducting path circuit network according to claim 4, characterized in that The mesh of the net is square, diamond or triangular, the weaving method is plain weave, twill weave or satin weave, the mesh type is plain mesh or mat mesh, the mesh layer method is single-layer mesh, multi-layer woven mesh or multi-layer stacked mesh; the diameter of the conductive filament is 0.1-2 mm; the aperture of the net is 10 mesh-60 mesh.

7. An improved self-conducting path circuit network according to claim 4, characterized in that The conductive filaments as the weft are pressed against the upper surface of the LED to dissipate heat from the upper surface of the LED.

8. An improved self-conducting path circuit network according to claim 4, characterized in that The LED is first welded and then woven, or first woven and then welded.

9. An improved self-conducting path circuit network according to claim 4, characterized in that The conductive filaments are metal filaments or carbon fiber filaments.

10. An improved LED light network, characterized in that It comprises the LED light strip and the metal woven mesh as claimed in any one of claims 1 to 3, wherein the metal foil strip on the front or back of the LED light strip is welded to the metal woven mesh, and the metal woven mesh serves as a carrier and heat sink of the LED light strip.

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