A unitized flexible light strip and a manufacturing method thereof

By designing the combined structure of unitized flexible light strips, the problems of complex production processes and unreliable connections in the prior art are solved, and stronger connection strength, higher production efficiency and better product quality are achieved.

CN112856264BActive Publication Date: 2025-03-04GUANGDONG DATANG YONGHENG INTELLIGENT TECH CO LTD
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Patent Information

Application Number
CN202110153962.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-02-04
Publication Date
2025-03-04
Estimated Expiration
2041-02-04

AI Technical Summary

Technical Problem

The production process of existing flexible wire light strips is complex, making it difficult to achieve automated and mechanized production, and the connection between the leads and the power supply wire is unreliable, which can easily cause a power-on state and affect product quality.

Method used

A unitized flexible light strip is designed, adopting a combined structure of a wire plate and a flexible circuit board. The wire plate is composed of multiple wire bodies, a first insulating film and a second insulating film. The flexible circuit plate and the wire plate are electrically connected through welding sections and welding ring holes, and are wrapped by an outer cladding to prevent water and damage.

Benefits of technology

It improves the connection strength of flexible circuit boards, simplifies production processes, realizes mechanization and automation of processes, reduces labor demand, and improves product reliability and quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention discloses a unitized flexible light strip, comprising: a wire board, a flexible circuit board and an outer covering. The wire board comprises: a first insulating film, a second insulating film and a wire body. The wire bodies are arranged between the first insulating film and the second insulating film without being connected to each other, and each of the wire bodies is provided with a welding section exposed to the first insulating film. Both ends of the flexible circuit board are provided with a plurality of welding ring holes, and the welding ring holes are electrically connected to the welding sections one by one. The outer covering is wrapped and sleeved on the outside of the wire board and the flexible circuit board. The present invention also discloses a method for manufacturing a unitized flexible light strip, which realizes batch production of flexible light strips through wire panels and flexible circuit panels, and has high production efficiency. The unitized flexible light strip of the present invention can be matched with different flexible circuit boards, and has strong applicability and practicality. The present invention can be applied to the field of lighting technology.
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Description

Technical Field

[0001] The present invention relates to the field of lighting technology, and in particular to a unitized flexible light strip and a manufacturing method thereof. Background Art

[0002] With the development of society, lighting facilities are widely used in life. Among lighting facilities, breakthrough products such as LED flexible light strips have emerged. LED flexible light strips use flexible circuit boards and can be bent at will, which has good product application prospects.

[0003] LED flexible light strips are divided into two types: wire-free light strips and wired light strips. Due to the high cost and single style of wire-free light strips, wired light strips are currently the mainstream choice in the market. In the production process of wired light strips in the prior art, the wires need to be coated with glue to make a wire board, and then the flexible circuit board is inserted into the rectangular groove of the wire board. It is necessary to cut an incision on the wire board and connect the conductive wire and the flexible circuit board by welding copper wire, which is called "parallel connection" in the industry. The operation of "parallel connection" is relatively complicated, difficult to achieve automated mechanized production, and requires a lot of labor. In the process of manual operation of "parallel connection", it is difficult to ensure uniform spacing between the patch flexible circuit boards, and the connection between the lead and the power supply wire is unreliable, which can easily cause a power-off state and cause product quality problems. Summary of the invention

[0004] The object of the present invention is to provide a unitized flexible light strip to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0005] The technical solutions adopted to solve the above technical problems are:

[0006] A unitized flexible light strip, comprising:

[0007] A wire board, the wire board comprising: a first insulating film, a second insulating film and a wire body; the wire body has more than two, and the wire bodies are arranged between the first insulating film and the second insulating film without being connected to each other; the surface of the first insulating film away from the second insulating film is a mounting surface, and the other surface is a bonding surface; the mounting surface is a flat plane, the second insulating film is hot-pressed and bonded to the bonding surface and wraps the wire body, the first insulating film is provided with a plurality of open sections, and each of the wire bodies is provided with a welding section exposed from the open section;

[0008] A flexible circuit board, wherein the flexible circuit board is provided with a flexible bottom plate, a plurality of light-emitting units are provided on one side of the flexible bottom plate, the other side of the flexible bottom plate is in contact with the mounting surface, solder pads are provided at both ends of the flexible circuit board, the two solder pads are respectively provided at different open sections, the solder pads are provided with a plurality of solder ring holes, and the solder ring holes are electrically connected to the solder sections one by one;

[0009] The outer covering layer is wrapped around the outer sides of the conductor plate and the flexible circuit board.

[0010] The unitized flexible light strip provided by the present invention has at least the following beneficial effects: the wire board is provided with a plurality of wire bodies to meet the circuit conduction requirements of the flexible circuit board; the first insulating film and the second insulating film simultaneously fix and insulate the plurality of wire bodies, and the mounting surface of the first insulating film is a flat plane, so that when the wire board is fixed and connected to the flexible circuit board, it can be fixed to the flexible bottom plate through the mounting surface, and the contact area between the mounting surface and the flexible circuit board is large, so that the connection strength of the flexible circuit board is improved. The manufacturing process of the wire board is simple and the manufacturing efficiency is high. An open section is reserved on the first insulating film so that the welding section of the wire body can be exposed from the open section. When welding and conducting with the flexible circuit board, it is only necessary to directly weld with the welding section on the preset pad of the flexible circuit board, without cutting an incision in the wire board to strip the wire and then connect in parallel. The process is simple and easy to implement mechanically. The first insulating film is provided with a plurality of open sections, so that flexible circuit boards of different lengths or specifications can be matched with the lead board as long as the pads at both ends can correspond to the two open sections respectively, and the lead board has strong versatility and applicability. The lead board and the flexible circuit board are wrapped by the outer covering layer to achieve the effect of waterproof and anti-damage, and at the same time prevent the lead board and the flexible circuit board from cutting the user.

[0011] As a further improvement of the above technical solution, the solder ring hole is connected to the soldering section by soldering, and hot melt adhesive is provided between the flexible bottom plate and the mounting surface. Soldering is a welding method that uses low-melting-point metal solder to melt and then penetrate and fill the gap at the connection of metal parts. The solder is usually a tin-based alloy, which can weld and fix the solder ring hole and the soldering section while achieving electrical conduction between the pad and the wire body. The wire board and the flexible circuit board are further bonded and fixed by the hot melt adhesive between the mounting surface and the flexible bottom plate.

[0012] As a further improvement of the above technical solution, a plurality of the open sections are arranged at equal intervals along the length direction of the wire body; there are a plurality of the flexible circuit boards, and the plurality of the flexible circuit boards are arranged in sequence along the length direction of the wire body, and the pads of two adjacent flexible circuit boards are respectively connected to the two ends of the corresponding welding sections. The open sections are arranged at equal intervals, and the spacing between the pads at both ends of the flexible circuit board is an integer multiple of the spacing between the open sections. It can be applied to the single-sided flexible wire board, and the wire board can adapt to flexible circuit boards of different length specifications. The plurality of open sections are arranged at equal intervals, so that the mounting surface can sequentially mount multiple sections of flexible circuit boards, so as to realize unitized production and processing.

[0013] As a further improvement of the above technical solution, the open section is provided with an open window pane, the open window pane is rectangular, there are at least two open window panes, and the welding sections of the wire body are all exposed in the open window panes. By providing a rectangular open window pane, the wire body is exposed, and the welding ring hole of the flexible circuit board is aligned with the open window pane to be welded to the wire body.

[0014] As a further improvement of the above technical solution, the first insulating film is a single-layer film, and the material of the first insulating film is polyethylene terephthalate or polyvinyl chloride. Polyvinyl chloride has good flame retardancy, flexibility and insulation. Polyethylene terephthalate has good impact resistance and high tensile strength.

[0015] Alternatively, the first insulating film is a multi-layer composite film, the multi-layer composite film is provided with a high softening point layer and a low softening point layer that are adhered to each other, the mounting surface is provided on the high softening point layer, the bonding surface is provided on the low softening point layer, the material of the high softening point layer is polyethylene terephthalate, the material of the low softening point layer is polyvinyl chloride, and a first adhesive layer is provided between the high softening point layer and the low softening point layer. The first insulating film is formed by a composite of a high softening point layer and a low softening point layer, and has the advantages of both a high softening point layer and a low softening point layer. The high softening point layer enables the mounting surface to remain flat, which is convenient for the installation, fixation and conduction of the flexible circuit board; the low softening point layer enables the first insulating film to be bonded to the second insulating film to wrap and fix the wire body. The first insulating film is formed by a composite of polyethylene terephthalate and polyvinyl chloride, so that the first insulating film has good tensile strength, impact resistance, flame retardancy, insulation and softness. The high softening point layer and the low softening point layer can be bonded and fixed to each other via the first adhesive layer.

[0016] As a further improvement of the above technical solution, the second insulating film is a single-layer film, and the material of the second insulating film is polyvinyl chloride. The material of the second insulating film is polyvinyl chloride, which can be melted and softened and reshaped during the hot pressing process, and can adapt to the columnar or flat strip-shaped wire body and be attached to the first insulating film and the wire body.

[0017] The wire body is in the shape of a strip, and the bending ability of the wire body in the short side direction of its cross section is strong, which is suitable for general scenarios. The cross section of the wire body specifically refers to the cross section obtained when the wire body is intersected with a plane perpendicular to the length direction of the wire body. Alternatively, the wire body is in the shape of a strip column. The columnar wire body is subjected to more balanced forces in all directions, and has a stronger ability to withstand torsional stress, which is particularly suitable for the winding arrangement of flexible light strips. In addition, the wire body is integrally formed or composed of multiple strands of metal wire. Since the metal wire itself has good flexibility, the wire body uses multiple strands of metal wire, and the wire body can still maintain good softness when the cross-sectional area is large and the resistivity is low. The one-piece wire body has high processing precision and can be processed into a finer shape to meet the fitting requirements of the wire board.

[0018] Or the material of the second insulating film is polyethylene terephthalate. The wire body is in the form of a thin sheet, and a second adhesive layer is provided between the first insulating film and the second insulating film. The second insulating film is made of polyethylene terephthalate, which will not melt and soften and be reshaped during the hot pressing process. During the laminating process, the first insulating film and the second insulating film are both kept flat, so the second adhesive layer is required to enable the first insulating film and the second insulating film to be laminated to each other. In view of this, the wire body is in the form of a thin sheet to avoid excessive thickness resulting in a large thickness of the second adhesive layer and excessive consumption of adhesive.

[0019] As a further improvement of the above technical solution, the outer covering layer is made of a light-transmitting material, the outer covering layer is integrally formed, the bottom of the outer covering layer is in the shape of a flat plate, the top of the outer covering layer is in the shape of a rectangle or an arc, and the flexible circuit board and the wire board are respectively arranged near the top and bottom of the outer covering layer. The outer covering layer can wrap and protect the flexible circuit board and the wire board, the outer covering layer is made of a light-transmitting material, so that the light-emitting unit on the flexible circuit board will not be blocked, and the bottom of the outer covering layer is in the shape of a flat plate, which is convenient for fixing the unitized flexible light strip of the present invention. The arc-shaped top of the outer covering layer makes the light of the light-emitting unit more divergent and more beautiful; and in some occasions with a lamp trough, after the light strip is embedded in the lamp trough, the rectangular top of the outer covering layer can keep the light strip flat.

[0020] The present invention also provides a method for manufacturing the above-mentioned unitized flexible light strip, which is characterized by comprising the following steps:

[0021] S1: processing the open sections on the first insulating film at equal intervals;

[0022] S2: Controlling two or more conductor bodies to be arranged in parallel at a certain interval to form a conductor unit, and arranging a plurality of the conductor units in parallel at a certain interval between a first insulating film and a second insulating film; hot pressing the second insulating film and the first insulating film by a hot press machine to wrap all the plurality of the conductor units, so as to obtain a conductor panel having a plurality of the conductor panels arranged in parallel;

[0023] S3: preparing a flexible circuit panel, wherein the flexible circuit panel is provided with the same number of flexible circuit boards as the number of the conductor units in parallel;

[0024] S4: attaching the flexible circuit panel to the wire panel so that the flexible circuit board corresponds to the wire panel one by one, the pads at both ends of the flexible circuit board are aligned with different open sections, the welding ring holes are aligned with the wire body, and the welding ring holes are fixed to the corresponding wire body by soldering;

[0025] S5: repeat step S4, and weld and fix the multiple sections of flexible circuit panels in sequence along the length direction of the wire panels to obtain a flexible light strip panel in which multiple wire panels and flexible circuit boards are arranged in parallel;

[0026] S6: Cut the flexible light strip panels between the wire boards to obtain a plurality of flexible light strips, each of which is provided with a wire board, and a plurality of flexible circuit boards are sequentially provided along the length direction of the wire board;

[0027] S7: Extruding and encapsulating a single flexible light strip so that the outer side of the flexible light strip is wrapped with an outer coating to obtain a unitized flexible light strip.

[0028] The manufacturing method of the unitized flexible light strip of the present invention has at least the following beneficial effects: through the wire panel and the flexible circuit panel, the wire board and the flexible circuit board can be mass-produced; the flexible circuit panel is fixedly connected with the welding section of the wire body on the wire board through the welding ring holes of each welding pad by soldering, so that each flexible circuit board on the flexible circuit panel can correspond to each wire board, and a plurality of flexible light strips are generated at the same time and then extruded and coated to obtain the finished unitized flexible light strip of the present invention, which has high production efficiency, low processing difficulty, high material utilization rate, and is easy to realize mechanized and automated production, and has strong practicality and economic value. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments;

[0030] Figure 1 This is a partial three-dimensional schematic diagram of an embodiment of the unitized flexible light strip provided by the present invention;

[0031] Figure 2 This is an exploded schematic diagram of an embodiment of the conductor board and the flexible circuit board provided by the present invention;

[0032] Figure 3 This is an exploded schematic diagram of an embodiment of the conductor board and the flexible circuit board provided by the present invention;

[0033] Figure 4 is a top view of an embodiment of the conductor track provided by the present invention;

[0034] Figure 5 is a top view of an embodiment of the conductor track provided by the present invention;

[0035] Figure 6 is a cross-sectional schematic diagram of an embodiment of the conductor track provided by the present invention;

[0036] Figure 7 is a cross-sectional schematic diagram of an embodiment of the conductor track provided by the present invention;

[0037] Figure 8 is a cross-sectional schematic diagram of an embodiment of the conductor track provided by the present invention;

[0038] Fig. 9 is a cross-sectional schematic diagram of an embodiment of the conductor track provided by the present invention;

[0039] Fig.10 is a cross-sectional schematic diagram of an embodiment of the conductor track provided by the present invention;

[0040] Fig.11 is a top view of an embodiment of the wire assembly provided by the present invention;

[0041] Fig.12 The figure is a three-dimensional schematic diagram of an embodiment of the flexible light strip puzzle provided by the present invention.

[0042] 100. conductor board, 110. first insulating film, 111. open section, 112. open window pane, 113. high softening point layer, 114. low softening point layer, 115. first adhesive layer, 120. second insulating film, 130. conductor body, 131. welding section, 140. second adhesive layer, 200. flexible circuit board, 210. light-emitting unit, 220. solder pad, 221. solder ring hole, 300. outer covering. DETAILED DESCRIPTION

[0043] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0044] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] In the description of the present invention, if there are words such as "several", it means one or more, "more" means more than two, greater than, less than, exceed, etc. are understood as not including the number, and above, below, within, etc. are understood as including the number.

[0046] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0047] Reference Figures 1 to 12 The unitized flexible light strip of the present invention is implemented as follows:

[0048] A unitized flexible light strip includes: a conductor plate 100, a flexible circuit board 200 and an outer covering layer 300.

[0049] The lead plate 100 includes a first insulating film 110 , a second insulating film 120 and two lead bodies 130 .

[0050] The two wire bodies 130 are both extended in the front-to-back direction. The two wire bodies 130 are not connected to each other and are arranged in parallel in the left-right direction.

[0051] The first insulating film 110 and the second insulating film 120 are respectively disposed on the upper and lower sides of the two wire bodies 130. The upper surface of the second insulating film 120 is hot-pressed and attached to the lower side of the first insulating film 110 and wraps the two wire bodies 130. The upper side surface of the first insulating film 110 is a mounting surface, which is a flat plane.

[0052] The first insulating film 110 is provided with a plurality of open sections 111, and the plurality of open sections 111 are arranged at equal intervals along the length direction of the wire body 130. The two wire bodies 130 are each provided with a welding section 131 exposed from the open section 111. The open section 111 is provided with two open window panes 112, and the welding sections 131 of the two wire bodies 130 are correspondingly exposed from the two open window panes 112. The welding ring hole 221 is connected to the welding section 131 by soldering, and a hot melt adhesive is provided between the flexible bottom plate and the mounting surface. The hot melt adhesive may be, but is not limited to, EVA resin.

[0053] The flexible circuit board 200 is arranged on the upper side of the wire board 100. The flexible circuit board 200 is provided with a flexible bottom plate, and a plurality of light-emitting units 210 are arranged on the upper side of the flexible bottom plate. The lower side of the flexible bottom plate abuts against the mounting surface. Both ends of the flexible circuit board 200 are provided with solder pads 220, and the two solder pads 220 are respectively arranged at different open sections 111. The solder pads 220 are provided with a plurality of solder ring holes 221, and the solder ring holes 221 are electrically connected to the welding sections 131 one by one. The solder ring holes 221 are connected to the welding sections 131 by soldering, and hot melt adhesive is provided between the flexible bottom plate and the mounting surface.

[0054] There are multiple flexible circuit boards 200 , which are arranged in sequence along the length direction of the wire body 130 , and the pads 220 of two adjacent flexible circuit boards 200 are respectively connected to the two ends of the corresponding welding section 131 .

[0055] In different embodiments, the first insulating film 110 may be a single-layer film or a multi-layer composite film:

[0056] Reference Figure 6 and Figure 8 When the first insulating film 110 is a multi-layer composite film, it is provided with a high softening point layer 113 and a low softening point layer 114 that are adhered to each other, the wire body 130 and the second insulating film 120 are both provided on one side of the low softening point layer 114, and the second insulating film 120 is hot-pressed and attached to the low softening point layer 114. The material of the high softening point layer 113 is polyethylene terephthalate, and the material of the low softening point layer 114 is polyvinyl chloride. A first adhesive layer 115 is provided between the high softening point layer 113 and the low softening point layer 114.

[0057] The material of the first adhesive layer 115 can be hot melt adhesive, epoxy resin adhesive or polyurethane adhesive.

[0058] Reference Figure 5 and Fig. 9When the first insulating film 110 is a single-layer film, the material of the first insulating film 110 is polyethylene terephthalate or polyvinyl chloride. When the material of the first insulating film 110 is polyethylene terephthalate, a second adhesive layer 140 is provided between the first insulating film 110 and the second insulating film 120.

[0059] The material of the second adhesive layer 140 can be hot melt adhesive, epoxy resin adhesive, polyurethane adhesive, etc.

[0060] The second insulating film 120 is a single-layer film, and the material of the second insulating film 120 is polyvinyl chloride.

[0061] The conductor body 130 is provided with multiple strands of metal wires, so that the conductor body 130 can achieve a lower resistivity while maintaining flexibility. The material of the metal wires can be copper, tinned copper, copper-clad steel, copper-clad aluminum, etc.

[0062] The wire body 130 can be made into a column shape or a belt shape as required. Figure 8 and Fig. 9 The strip-shaped conductor body 130 can be formed by arranging multiple strands in parallel. The strip-shaped conductor body 130 has a strong bending ability in the short side direction of its cross section, and is suitable for general scenarios. The cross section of the conductor body 130 specifically refers to the cross section obtained when the conductor body 130 is intersected with a plane perpendicular to the length direction of the conductor body 130. Figure 6 and Figure 7 The columnar wire body 130 can be formed by twisting or arranging multiple metal wires in parallel. The columnar wire body 130 is subjected to relatively balanced forces in all directions and has a strong ability to withstand torsional stress, and is particularly suitable for the winding arrangement of flexible light strips.

[0063] It is understandable that both the first insulating film 110 and the second insulating film 120 are flexible. The flexibility of the first insulating film 110 and the flexibility of the second insulating film 120 can be changed by adjusting the thickness of the insulating film or adding a plasticizer to the raw material to ensure that the flexibility of the first insulating film 110 and the second insulating film 120 meets the bending requirements of the flexible light strip.

[0064] The outer covering layer 300 is wrapped and sleeved on the outer sides of the lead plate 100 and the flexible circuit board 200. The outer covering layer 300 is made of a light-transmitting material, and the outer covering layer 300 is integrally formed. The bottom of the outer covering layer 300 is in a flat plate shape, and the top of the outer covering layer 300 is in a rectangular or arc shape. The flexible circuit board 200 and the lead plate 100 are respectively arranged near the top and bottom of the outer covering layer 300.

[0065] Reference Fig.10In some embodiments, the material of the second insulating film 120 is polyethylene terephthalate, a second adhesive layer 140 is provided between the first insulating film 110 and the second insulating film 120, and the wire body 130 is in the form of a thin sheet. Since the insulating film made of polyethylene terephthalate will not soften and deform during the hot pressing process, when the material of the second insulating film 120 is polyethylene terephthalate, a second adhesive layer 140 is provided between the first insulating film 110 and the second insulating film 120, and the first insulating film 110 and the second insulating film 120 are fixed by the second adhesive layer 140. Moreover, the second insulating film 120 made of polyethylene terephthalate will not soften and conform to the shape of the wire body 130 during hot pressing, so there is a certain limit on the thickness of the wire body 130, and the wire body 130 generally adopts a thin sheet conductor.

[0066] In some embodiments, there are more than two wire bodies 130, and the wire bodies 130 are arranged side by side and are not connected to each other. For a more complex flexible circuit board 200, sometimes more than two circuits are needed to realize the conduction of complexly arranged electronic components.

[0067] The present invention also discloses a method for manufacturing the above-mentioned unitized flexible light strip, referring to Figures 1 to 12 , including the following steps:

[0068] S1: processing the open sections 111 on the first insulating film 110 at equal intervals.

[0069] S2: Control more than two conductor bodies 130 to be arranged in parallel at a certain interval to form a conductor unit, and arrange the plurality of conductor units in parallel at a certain interval between the first insulating film 110 and the second insulating film 120; use a hot press to hot-press the second insulating film 120 and the first insulating film 110 and wrap all the plurality of conductor units to obtain a conductor panel with the plurality of conductor boards 100 arranged in parallel.

[0070] S3: preparing a flexible circuit panel, wherein the flexible circuit panel is provided with the flexible circuit boards 200 having the same number as the conductor units in parallel.

[0071] S4: Attach the flexible circuit panel to the wire panel so that the flexible circuit board 200 corresponds to the wire board 100 one by one, the solder pads 220 at both ends of the flexible circuit board 200 are aligned with different open sections 111, the solder ring holes 221 are aligned with the wire body 130 corresponding to each other, and the solder ring holes 221 are fixed to the corresponding wire body 130 by soldering.

[0072] S5: Repeat step S4 to weld and fix multiple sections of flexible circuit panels in sequence along the length direction of the wire panels to obtain a flexible light strip panel with multiple wire boards 100 and flexible circuit boards 200 arranged in parallel.

[0073] S6: Cut the flexible light strip panels between the wire boards 100 to obtain a plurality of flexible light strips. Each flexible light strip is provided with a wire board 100 . A plurality of flexible circuit boards 200 are sequentially provided along the length direction of the wire board 100 .

[0074] S7: Extruding and encapsulating a single flexible light strip so that the outer side of the flexible light strip is wrapped with an outer coating 300 to obtain a unitized flexible light strip.

[0075] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A unitized flexible light strip, characterized in that: include: A conductor plate (100), a flexible circuit board (200) and an outer covering layer (300); The wire board (100) comprises: a first insulating film (110), a second insulating film (120) and a wire body (130); there are two or more wire bodies (130), and the wire bodies (130) are arranged between the first insulating film (110) and the second insulating film (120) without being connected to each other; the surface of the first insulating film (110) away from the second insulating film (120) is a mounting surface, and the other surface is a bonding surface; the mounting surface is a flat plane, the second insulating film (120) is hot-pressed and bonded to the bonding surface and wraps the wire body (130), the first insulating film (110) is provided with a plurality of open sections (111), and each of the wire bodies (130) is provided with a welding section (131) exposed from the open section (111); The first insulating film (110) is a single-layer film or a multi-layer composite film. When the first insulating film (110) is a single-layer film, its material is polyethylene terephthalate or polyvinyl chloride. When the first insulating film (110) is a multi-layer composite film, it is provided with a high softening point layer (113) and a low softening point layer (114) that are adhered to each other, the mounting surface is provided on the high softening point layer (113), and the bonding surface is provided on the low softening point layer (114). The material of the high softening point layer (113) is polyethylene terephthalate, and the material of the low softening point layer (114) is polyvinyl chloride. A first adhesive layer (115) is provided between the high softening point layer (113) and the low softening point layer (114); The second insulating film (120) is a single-layer film, the wire body (130) is in the shape of a column, a flat strip or a thin sheet, When the wire body (130) is in the shape of a column or a flat strip, the wire body (130) is integrally formed or is composed of multiple strands of metal wires; the material of the second insulating film (120) is polyvinyl chloride; when the wire body (130) is in the shape of a thin sheet, the material of the second insulating film (120) is polyethylene terephthalate; a second adhesive layer (140) is provided between the first insulating film (110) and the second insulating film (120); The flexible circuit board (200) is provided with a flexible base plate, a plurality of light-emitting units (210) are provided on one side of the flexible base plate, and the other side of the flexible base plate is in contact with the mounting surface; solder pads (220) are provided at both ends of the flexible circuit board (200), and the two solder pads (220) are respectively provided at different open sections (111); the solder pads (220) are provided with a plurality of solder ring holes (221), and the solder ring holes (221) are electrically connected to the solder sections (131) in a one-to-one correspondence; The welding ring hole (221) is connected to the welding section (131) by soldering, and hot melt adhesive is provided between the flexible bottom plate and the mounting surface; The plurality of open sections (111) are arranged at equal intervals along the length direction of the wire body (130); there are a plurality of flexible circuit boards (200), and the plurality of flexible circuit boards (200) are arranged in sequence along the length direction of the wire body (130), and the solder pads (220) of two adjacent flexible circuit boards (200) are respectively connected to two ends of the corresponding soldering sections (131); The open section (111) is provided with an open window pane (112), the open window pane (112) is rectangular, there are at least two open window panes (112), and the welding sections (131) of the wire body (130) are all exposed from the open window panes (112); The outer covering layer (300) is wrapped around the outer sides of the lead plate (100) and the flexible circuit board (200).

2. The unitized flexible light strip according to claim 1, characterized in that: The outer covering layer (300) is made of a light-transmitting material, the outer covering layer (300) is integrally formed, the bottom of the outer covering layer (300) is in the shape of a flat plate, the top of the outer covering layer (300) is in the shape of a rectangle or an arc, and the flexible circuit board (200) and the lead board (100) are respectively arranged near the top and bottom of the outer covering layer (300).

3. A method for manufacturing a unitized flexible light strip according to any one of claims 1 to 2, characterized in that: The following steps are involved: S1: processing the open sections (111) at equal intervals on the first insulating film (110); S2: controlling two or more conductor bodies (130) to be arranged in parallel at a certain interval to form conductor units, and arranging a plurality of the conductor units in parallel at a certain interval between a first insulating film (110) and a second insulating film (120); hot pressing the second insulating film (120) and the first insulating film (110) by a hot press to completely wrap the plurality of the conductor units, thereby obtaining a conductor panel having a plurality of the conductor panels (100) arranged in parallel; S3: preparing a flexible circuit panel, wherein the flexible circuit panel is provided with the same number of flexible circuit boards (200) as the number of the conductor units in parallel; S4: attaching the flexible circuit panel to the wire panel so that the flexible circuit board (200) corresponds to the wire board (100) one by one, the solder pads (220) at both ends of the flexible circuit board (200) are aligned with different open sections (111), the solder ring holes (221) and the wire bodies (130) are aligned with each other, and the solder ring holes (221) are fixed to the corresponding wire bodies (130) by soldering; S5: repeating step S4, welding and bonding the multiple sections of flexible circuit panels in sequence along the length direction of the conductor panels to obtain a flexible light strip panel in which multiple conductor panels (100) and flexible circuit boards (200) are arranged in parallel; S6: cutting the flexible light strip panels between the conductor boards (100) to obtain a plurality of flexible light strips, each of which is provided with a conductor board (100), and a plurality of flexible circuit boards (200) are sequentially provided along the length direction of the conductor board (100); S7: Extruding and encapsulating a single flexible light strip so that the outer side of the flexible light strip is wrapped with an outer coating (300), thereby obtaining a unitized flexible light strip.

Citation Information

Patent Citations

  • LED lamp strip

    CN108488661A

  • Unitized flexible lamp strip

    CN214500955U