Bendable lamp strip

Abstract

The utility model discloses a bendable lamp strip which comprises a flexible PCBA board, the edges of the two sides of the flexible PCBA board are each provided with a plurality of first notches arranged at intervals, the first notches in the two sides are arranged in a staggered mode, and at least one bending line is arranged on the surface of the flexible PCBA board. A plurality of LED lamp beads are arranged on the flexible PCBA board, and the LED lamp beads are arranged at intervals in the length direction of the flexible PCBA board; the light shielding layer is provided with a groove, the flexible PCBA board is arranged in the groove, and the bent part of the flexible PCBA board is embedded in the side wall of the light shielding layer. The first notches are formed in the edges of the two sides of the flexible PCBA board, so that compression and tensile stress of left-right bending during positive bending (in the direction of a light-emitting surface) and lateral bending (in the directions of the two sides of the lamp body) can be tolerated, and the risk that electronic elements on the flexible PCBA board are damaged is reduced; the defect that electrical connection needs to be conducted through a wire or an additional FPC in the wire connection direction is effectively overcome, the technology is simplified, the labor cost is reduced, and the reliability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible light strips, in particular to a bendable light strip. Background Art

[0002] At present, the products on the flexible light strip market are mainly divided into two categories: positive bending light strips and side bending light strips. These two types of light strips are limited to single application scenarios of bending along the light-emitting surface or bending along the side wall of the light strip, and the usage scenarios are relatively limited. There are also some companies in the industry that use flexible PCBAs at a certain angle, or use hard boards as light source boards, and then use electronic wires or flexible FPC boards for connection to achieve the effect of positive and side bending; but these two methods are either inconvenient to bend, the bending diameter is too large, and the PCBA is subjected to greater stress when bending. After installation, the internal PCBA and electronic devices are at risk of damage due to stress; or, they are connected through hard boards, which increases the process manufacturing cost, and there are more solder joints, and there is a process risk of false soldering and false soldering, and the reliability is not high. In this regard, this application proposes a flexible light strip to solve such problems. Utility Model Content

[0003] Based on this, in order to solve the problems existing in the prior art, the present application provides a bendable light strip, comprising:

[0004] A flexible PCBA board, wherein a plurality of first notches are provided at intervals on both sides of the flexible PCBA board, and the first notches on both sides of the flexible PCBA board are arranged in a staggered manner, and at least one bending line is provided on the surface of the flexible PCBA board, and the flexible PCBA board is bent along the bending line to form;

[0005] LED lamp beads, a plurality of LED lamp beads are arranged on the flexible PCBA board, and the plurality of LED lamp beads are arranged at intervals along the length direction of the flexible PCBA board, and the arrangement direction of the bending line is consistent with the arrangement direction of the LED lamp beads;

[0006] The light-shielding layer is provided with a groove, the flexible PCBA board is arranged in the groove, and the bent part of the flexible PCBA board is embedded in the side wall of the light-shielding layer.

[0007] Furthermore, the cross-sectional shape of the flexible PCBA board after being bent along the bending line is L-shaped.

[0008] Furthermore, the LED lamp beads are arranged on a flexible PCBA board located at the bottom of the groove.

[0009] Furthermore, the light shielding layer is provided with a second notch on the side wall inlaid with the flexible PCBA board, and the LED lamp beads are arranged on the flexible PCBA board located at the second notch.

[0010] Furthermore, inclined surfaces are provided at upper ends of both side walls of the light shielding layer near the opening of the groove, so that the opening of the groove is in a trumpet shape.

[0011] Furthermore, it also includes a transparent layer, which is arranged inside the groove and above the LED lamp beads.

[0012] Furthermore, a diffusion layer is included, which is arranged at the opening of the groove and located above the transparent layer.

[0013] Furthermore, the light-shielding layer, the transparent layer and the diffusion layer can be integrally formed by extrusion, injection molding or drip irrigation.

[0014] Furthermore, the materials of the light shielding layer, the transparent layer and the diffusion layer are all made of plastic elastic colloid materials.

[0015] Furthermore, the bottom edge of the first notch is flush with the bending line.

[0016] Beneficial effect: By opening the first notch on the edges of both sides of the flexible PCBA board, the compression and tensile stress of bending up and down during positive bending (along the light-emitting surface direction) can be tolerated, and the compression and tensile stress of bending left and right during side bending (along the directions of both sides of the lamp body) can be tolerated, reducing the risk of damage to electronic components on the flexible PCBA board; and the bent part of the flexible PCBA board forms a complete electrical circuit connection with the bottom, effectively avoiding the disadvantage that the connection direction needs to be electrically connected through wires or additional FPCs, simplifying the process, reducing labor costs, and improving reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of the flexible PCBA board of the utility model when it is L-shaped;

[0019] Figure 2 This is a schematic diagram of the overall structure of the flexible PCBA board of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the flexible PCBA board of the utility model when it is L-shaped;

[0021] Figure 4 This is a schematic diagram of the structure of the flexible PCBA board of the utility model;

[0022] Figure 5 This is a schematic diagram of the assembly structure when the flexible PCBA board of the utility model is L-shaped;

[0023] Figure 6 This is a schematic diagram of the assembly structure of the flexible PCBA board of the utility model;

[0024] In the figure: 1. Flexible PCBA board; 11. Bending line; 12. First notch; 2. LED lamp beads; 3. Shading layer; 31. Second notch; 32. Bevel; 4. Transparent layer; 5. Diffusion layer.

[0025] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B; in addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0029] like Figure 1-6 As shown, an embodiment of the present application provides a bendable light strip, comprising:

[0030] A flexible PCBA board 1, wherein a plurality of first notches 12 are provided at intervals on both sides of the flexible PCBA board 1, and the first notches 12 on both sides of the flexible PCBA board 1 are arranged alternately, and at least one bending line 11 is provided on the surface of the flexible PCBA board 1, and the flexible PCBA board 1 is bent along the bending line 11 to form;

[0031] LED lamp beads 2, a plurality of LED lamp beads 2 are arranged on the flexible PCBA board 1, and the plurality of LED lamp beads 2 are arranged at intervals along the length direction of the flexible PCBA board 1, and the arrangement direction of the bending line 11 is consistent with the arrangement direction of the LED lamp beads 2;

[0032] The light shielding layer 3 is provided with a groove, the part of the flexible PCBA board 1 on which the LED lamp beads 2 are installed is arranged at the bottom of the groove, and the bent part of the flexible PCBA board 1 is embedded in the side wall of the light shielding layer 3.

[0033] In this embodiment, a plurality of first notches 12 are provided at intervals on both sides of the flexible PCBA board 1, and the first notches 12 on both sides of the flexible PCBA board 1 are arranged alternately. This design enables the flexible PCBA board 1 to form an S shape, so that the bent portion of the flexible PCBA board 1 forms a complete electrical circuit connection with the bottom. The interval length of the opening can be selected according to the required bending diameter of the light strip and the function of the product.

[0034] Optionally, the bottom edge of the first notch 12 is flush with the bending line 11;

[0035] Optionally, the opening is formed at intervals of one LED lamp bead 2, or at intervals of several LED lamp beads 2;

[0036] The flexible PCBA board 1 can be bent upward along the bending line 11 with the lamp bead facing upward by a fixture, and the bending line 11 is distributed on both sides of the LED lamp bead 2;

[0037] The shading layer 3 is used to shield light so that no light can come out of the other three sides of the light strip except the luminous surface. The shading layer 3 is opaque. Optionally, the color of the shading layer 3 is milky white, black, gray or other opaque colors. When the bent part of the flexible PCBA board 1 is inlaid, the bent part of the flexible PCBA board 1 after bending can be buried in the material of the shading layer 3 and formed by extrusion, injection molding or drip irrigation. Alternatively, the shading layer 3 of the lamp body with an inner buckle can be formed first, and then the bent part of the flexible PCBA board 1 can be inserted into the inner buckle through a fixture.

[0038] By opening the first notch 12 on both side edges of the flexible PCBA board 1, the compressive and tensile stresses of bending up and down during positive bending (along the light-emitting surface direction) can be tolerated, and the compressive and tensile stresses of bending left and right during side bending (along the two sides of the lamp body) can be tolerated, thereby reducing the risk of damage to electronic components on the flexible PCBA board 1; and the bent portion of the flexible PCBA board 1 forms a complete electrical circuit connection with the bottom, effectively avoiding the disadvantage that the connection direction needs to be electrically connected through a wire or an additional FPC, thereby simplifying the process, reducing labor costs, and improving reliability.

[0039] In the embodiment, the cross-sectional shape of the flexible PCBA board 1 after being bent along the bending line 11 is L-shaped.

[0040] In this embodiment, when there is only one bending line 11, the bending line 11 is distributed on one side of the LED lamp bead 2. At this time, the cross-sectional shape of the flexible PCBA board 1 after being bent along the bending line 11 is L-shaped;

[0041] When there are two bending lines 11, the two bending lines 11 are evenly distributed on both sides of the LED lamp bead 2, and the flexible PCBA board 1 is bent along the bending lines 11;

[0042] When the light strip bends up and down along the light-emitting surface, the first notch 12 of the upward bent part of the flexible PCBA board 1 can absorb the tensile and compressive deformation of the flexible PCBA board 1 caused by the bending in this direction; when the lamp body bends along the left and right side walls, the first notch 12 of the unbent part of the flexible PCBA board 1 can absorb the tensile and compressive deformation caused by the bending in this direction; therefore, the stress of the up and down and left and right bending can be eliminated through the first notch 12 set in the upward bent part or the unbent part of the flexible PCBA board 1, without damaging the integrity of the flexible PCBA board 1 or the components on the flexible PCBA board 1, thereby ensuring the reliability of the bending application.

[0043] In one embodiment, the light shielding layer 3 is provided with a second notch 31 on the side wall where the flexible PCBA board 1 is embedded.

[0044] In this embodiment, the second notch 31 is provided on the side wall inlaid with the flexible PCBA board 1 through the light shielding layer 3. The purpose is to arrange electronic devices on the part of the flexible PCBA board 1 inlaid in the light shielding layer 3, and set electronic devices such as magic color, constant current drive IC, resistor, capacitor, etc., to meet more functional requirements of the light strip. At the same time, the second notch 31 can hide the electronic devices on both sides without affecting the output of light and generating shadows.

[0045] Optionally, the LED lamp bead 2 is installed on the side wall of the flexible PCBA board 1 at a position corresponding to the second notch 31 of the shading layer 3, so that the light-emitting surface of the LED lamp bead 2 faces the opposite side wall of the shading layer 3, and the electronic components of the LED lamp bead 2 driving circuit are placed on the unbent part of the flexible PCBA board 1.

[0046] In one embodiment, inclined surfaces 32 are provided at the upper ends of the two side walls of the light shielding layer 3 near the opening of the groove, so that the opening of the groove is in a trumpet shape.

[0047] In this embodiment, inclined surfaces 32 are provided on the upper ends of the two side walls of the light shielding layer 3 near the opening of the groove, so that the opening of the groove is trumpet-shaped. Such a design is conducive to the diffusion and amplification of the light source.

[0048] In one embodiment, a transparent layer 4 is further included. The transparent layer 4 is arranged inside the groove and the transparent layer 4 is located above the LED lamp bead 2 .

[0049] In this embodiment, the transparent layer 4 of the lamp body is located above the LED lamp beads 2. The transparent layer 4 plays a light-guiding role and has very little light loss, so as to improve the overall light output efficiency.

[0050] In one embodiment, a diffusion layer 5 is further included. The diffusion layer 5 is arranged at the opening of the groove and is located above the transparent layer 4 .

[0051] In this embodiment, the diffusion layer 5 is located above the transparent layer 4 and serves as a light emitting layer. Its function is to allow light to pass through the colloid with diffusion material to produce soft light emission and uniform light mixing effects.

[0052] In one embodiment, the light shielding layer 3, the transparent layer 4 and the diffusion layer 5 can be integrally formed by extrusion, injection molding or drip irrigation;

[0053] The light shielding layer 3 , the transparent layer 4 and the diffusion layer 5 are all made of a plastic elastic colloid material.

[0054] In this embodiment, the light shielding layer 3, the transparent layer 4 and the diffusion layer 5 can be integrally formed by extrusion, injection molding or drip irrigation of a plastic elastic colloid material. Optionally, the plastic elastic colloid material is silicone, TPU, PVC, etc.;

[0055] Specifically, when the co-extrusion method is adopted, the flexible PCBA board 1 is bent from a flat surface into an L shape by a shaping jig, and continuously transported into the die head; the elastic colloid materials of the light shielding layer 3, the transparent layer 4, and the diffusion layer 5 are extruded from three extruders, and simultaneously enter the mold installed on the die head, and are combined through their respective flow channels to wrap the flexible PCBA board 1, and are output from the die in an integrated manner;

[0056] When drip irrigation is adopted, the bottom of the light-shielding layer 3 and the light-blocking walls on both sides are first formed with an elastic colloid material to form a U-shaped opening groove. The groove can be provided with a card slot on the left and right light-blocking walls, or on one side of the light-blocking wall plus the bottom. After the flexible PCBA board 1 is formed into an L-shape, it is inserted, and then plugs are sealed on both sides of the groove. After the power cord of the light strip passes through the plug, the elastic colloid material of the transparent layer 4 and the diffusion layer 5 is drip-irrigated in the enclosed groove. The liquid elastic colloid material can be cured in a room temperature or high-temperature oven to complete the product process.

[0057] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A bendable light strip, characterized in that: include: A flexible PCBA board, wherein a plurality of first notches arranged at intervals are provided on both sides of the flexible PCBA board, and the first notches on both sides of the flexible PCBA board are arranged in a staggered manner, and at least one bending line is provided on the surface of the flexible PCBA board, and the flexible PCBA board is bent along the bending line to form; LED lamp beads, a plurality of the LED lamp beads are arranged on the flexible PCBA board, and the plurality of the LED lamp beads are arranged at intervals along the length direction of the flexible PCBA board, and the arrangement direction of the bending line is consistent with the arrangement direction of the LED lamp beads; The light shielding layer is provided with a groove, the flexible PCBA board is arranged in the groove, and the bent part of the flexible PCBA board is embedded in the side wall of the light shielding layer.

2. The bendable light strip according to claim 1, characterized in that: The cross-sectional shape of the flexible PCBA board after being bent along the bending line is L-shaped.

3. The bendable light strip according to claim 2, characterized in that: The LED lamp beads are arranged on a flexible PCBA board located at the bottom of the groove.

4. The bendable light strip according to claim 2, characterized in that: The light shielding layer is provided with a second notch on the side wall inlaid with the flexible PCBA board, and the LED lamp beads are arranged on the flexible PCBA board located at the second notch.

5. The bendable light strip according to claim 4, characterized in that: The upper ends of the two side walls of the light shielding layer are provided with inclined surfaces near the opening of the groove, so that the opening of the groove is in a trumpet shape.

6. The bendable light strip according to claim 1, characterized in that: It also includes a transparent layer, which is arranged inside the groove and above the LED lamp bead.

7. The bendable light strip according to claim 6, characterized in that: The invention also comprises a diffusion layer, which is arranged at the opening of the groove and is located above the transparent layer.

8. The bendable light strip according to claim 7, characterized in that: The light shielding layer, the transparent layer and the diffusion layer can be integrally formed by extrusion, injection molding or drip irrigation.

9. The bendable light strip according to claim 8, characterized in that: The materials of the light shielding layer, the transparent layer and the diffusion layer are all made of plastic elastic colloid material.

10. The bendable light strip according to claim 1, characterized in that: The bottom edge of the first notch is flush with the bending line.

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