3D bending flexible light strip

Abstract

The utility model relates to a kind of 3D bending flexible lamp strip, comprising: FPC flexible circuit board, including several mainboard area, and bending area between adjacent mainboard area, at least one horizontal extension protruding part is equipped in the two sides of the mainboard area, several lamp beads are equipped on the mainboard area, the bending area is bent and arches upwards or downwards;Lamp house, made of flexible material, the lamp house has the stepped mounting cavity formed by top cavity and bottom cavity upper and lower communication, the width of the bottom cavity is compatible with the protruding part, the width of the top cavity is greater than or equal to the width of the bending area and less than the width of the bottom cavity, the bending area arches in the top cavity.

Description

Technical Field

[0001] This utility model relates to the field of flexible light strip technology, and in particular to a 3D bent flexible light strip. Background Technology

[0002] As installation environments become more complex, the performance requirements for flexible LED strips are becoming increasingly demanding. Traditional LED strips that can only be bent vertically can no longer meet market needs. Therefore, a flexible LED strip that can be bent not only vertically but also laterally to create a 3D bending effect is required.

[0003] CN220749875U discloses an arbitrarily bendable LED strip and an arbitrarily bendable neon light. The FPC mounting plate has several arched parts. When the LED strip is bent forward or laterally, the arched parts bend or twist, thereby bending the LED strip and enabling the LED strip to bend in any direction.

[0004] However, this structure still has some drawbacks. Cables need to be installed below the arch for electrical connection. Both the forward and side bends rely on the arch, but the side bend angle of the arch is relatively small, which still cannot meet market demand. Utility Model Content

[0005] In view of the above situation, it is necessary to propose a flexible light strip that can be bent in 3D, both forward and sideways.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a 3D bent flexible light strip, comprising:

[0007] The FPC flexible circuit board includes several main board areas and bending areas located between adjacent main board areas. Each side of the main board area is provided with at least one horizontally extending protrusion. Several LEDs are provided on the main board area. The bending area is bent upward or downward and arched.

[0008] The lamp housing is made of flexible material. The lamp housing has a stepped mounting cavity formed by the vertical connection of a top cavity and a bottom cavity. The width of the bottom cavity is adapted to the protrusion. The width of the top cavity is greater than or equal to the width of the bending area and less than the width of the bottom cavity. The bending area arches into the top cavity.

[0009] Furthermore, the length of the protrusion accounts for more than 30% of the length of the motherboard area.

[0010] Furthermore, the bending area is a semi-circular arch, a semi-waist-shaped arch, or a triangular arch with rounded corners.

[0011] Furthermore, the bottom cavity has a compression chamber on the side outside the motherboard area, and the compression chamber compresses the protrusion from top to bottom.

[0012] Furthermore, the protrusion is a rectangular protrusion or a trapezoidal protrusion.

[0013] Furthermore, the corners of the protrusion have rounded chamfers.

[0014] The beneficial effects of this invention are as follows: It uses an FPC flexible circuit board, which inherently possesses bending capabilities and internal wiring, eliminating the need for additional cabling. The FPC flexible circuit board comprises a main board area and a bending section connecting adjacent main board areas. The bending section is housed within a stepped mounting cavity for easy forward bending. At least one protrusion is provided on each side of the main board area. This protrusion does not engage with the bottom cavity of the lamp housing. The area between two adjacent protrusions in the length direction can be laterally bent, allowing for a large lateral bending length and a larger permissible lateral bending angle, thus achieving a 3D bending effect. Simultaneously, there is no need to narrow the width of the bending area, ensuring the strength of the FPC flexible circuit board and reducing the risk of breakage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an FPC flexible circuit board for a 3D bent flexible light strip according to an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of an FPC flexible circuit board for a 3D bent flexible light strip according to an embodiment of the present invention from another direction.

[0017] Figure 3 This is a schematic diagram of the structure of a 3D bent flexible light strip according to an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of a 3D-bent flexible light strip housing according to an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the extrusion cavity of a 3D bent flexible light strip according to an embodiment of the present invention.

[0020] Label Explanation:

[0021] 100. Flexible Printed Circuit Board (FPC); 110. Main Board Area; 111. Raised Part; 112. Chamfered Corner;

[0022] 113. LED bead; 120. Bending area; 200. Lamp housing; 210. Stepped mounting cavity; 211. Top cavity;

[0023] 212. Bottom cavity. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description of a 3D-bent flexible light strip, in conjunction with the accompanying drawings and embodiments, is provided. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the scope of the utility model.

[0025] Please refer to Figures 1-5 A 3D-bent flexible light strip, comprising:

[0026] The FPC flexible circuit board 100 includes several main board areas 110 and a bending area 120 located between adjacent 3D bent flexible light strip main board areas 110. Each side of the 3D bent flexible light strip main board area 110 is provided with at least one horizontally extending protrusion 111. Several LED beads 113 are provided on the 3D bent flexible light strip main board area 110. The 3D bent flexible light strip bending area 120 is bent and arched upward or downward.

[0027] The lamp housing 200 is made of flexible material. The 3D bent flexible light strip lamp housing 200 has a stepped mounting cavity 210 formed by the vertical connection of the top cavity 211 and the bottom cavity 212. The width of the bottom cavity 212 of the 3D bent flexible light strip is adapted to the protrusion 111 of the 3D bent flexible light strip. The width of the top cavity 211 of the 3D bent flexible light strip is greater than or equal to the width of the bending area 120 of the 3D bent flexible light strip and less than the width of the bottom cavity 212 of the 3D bent flexible light strip. The bending area 120 of the 3D bent flexible light strip arches into the top cavity 211 of the 3D bent flexible light strip.

[0028] The FPC flexible circuit board 100 is used, which has bending properties and internal wiring, eliminating the need for additional cabling. The FPC flexible circuit board 100 consists of a main board area 110 and bending portions connecting adjacent main board areas 110. The bending portions are housed within a stepped mounting cavity 210 for easy forward bending. At least one protrusion 111 is provided on each side of the main board area 110. The protrusions do not engage with the bottom cavity 212 of the lamp housing 200. Lateral bending is possible in the area between two adjacent protrusions 111 along the length direction, allowing for a large lateral bending length and a larger permissible lateral bending angle, thus achieving a 3D bending effect. Simultaneously, there is no need to narrow the width of the bending area 120, ensuring the strength of the FPC flexible circuit board 100 and reducing the risk of breakage.

[0029] Preferably, the length of the protrusion 111 of the 3D-bent flexible LED strip is more than 30% of the length of the main board area 110 of the 3D-bent flexible LED strip. Specifically, the length of the protrusion 111 is 0.3-0.7 times the length of the main board area 110 of the 3D-bent flexible LED strip. This ensures that the protrusion 111 has sufficient stability and strength to prevent displacement or tearing during bending.

[0030] Preferably, the bending area 120 of the 3D bent flexible light strip is pre-bent and shaped by stamping. This gives the bending area 120 elastic recovery force, allowing it to return to its original state after bending and prepare for the next bending.

[0031] Preferably, the bending area 120 of the 3D bent flexible light strip is a semi-circular arch, a semi-waist-shaped arch, or a triangular arch with rounded corners. It has sufficient tensile length and ensures electrical conductivity, and the rounded corners (peaks or valleys) prevent circuit breakage.

[0032] Specifically, please refer to Figure 5 The bottom cavity 212 of the 3D bent flexible light strip has a compression cavity on its side outside the main board area 110 of the 3D bent flexible light strip. The compression cavity of the 3D bent flexible light strip compresses the protrusion 111 of the 3D bent flexible light strip from top to bottom. This ensures the position of the protrusion 111 and prevents the main board area 110 from shifting after bending.

[0033] Please refer to Figures 1-2 The 3D-bent flexible light strip protrusion 111 is a rectangular or trapezoidal protrusion, ensuring sufficient area and strength.

[0034] Please refer to Figures 1-2 The corners of the protrusions 111 of the 3D-bent flexible light strip have rounded chamfers 112. This prevents cuts and ensures connection strength.

[0035] Understandably, the LEDs 113 are typically arranged in an array along the length of the FPC flexible circuit board 100 on the main board area 110, and can be arranged in one, two, or more rows (referring to the number perpendicular to the length direction) as needed. When setting up a row of LEDs 113, they are usually centered.

[0036] Understandably, the FPC flexible circuit board 100 typically consists of a substrate layer, a conductive layer, and a protective layer, with each layer bonded together by adhesive. The substrate layer is generally made of PI (polyimide) or PET (polyester), the conductive layer is generally made of copper foil, and the insulating layer is generally made of PI, similar to the substrate layer. Both the main board area 110 and the bending area 120 have conductive layers, while the protrusion 111 may not have a conductive layer. The bending area 120 can be thinned as needed, meaning its thickness is less than that of the main board area 110, to improve bending performance. The protrusion 111 can be hardened as needed to improve its stability in fitting the lamp housing 200. Hardening can be achieved by applying a light-curable adhesive to the protrusion 111 and then curing it under light.

[0037] The lamp housing 200 is made of flexible insulating materials, such as silicone, PVC (polyvinyl chloride), PC (polycarbonate), etc.

[0038] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0039] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0040] In summary, this utility model provides a 3D-bent flexible light strip using an FPC (Flexible Printed Circuit) board. The board itself possesses bending capabilities and internal wiring, eliminating the need for additional cabling. The FPC board comprises a main board area and bending sections connecting adjacent main board areas. The bending sections are housed within a stepped mounting cavity for easy forward bending. At least one protrusion is provided on each side of the main board area. These protrusions do not engage with the bottom cavity of the lamp housing. The area between two adjacent protrusions in the longitudinal direction allows for lateral bending, with a large lateral bending length and a wider permissible lateral bending angle, thus achieving a 3D bending effect. Simultaneously, there is no need to narrow the bending area, ensuring the strength of the FPC board and reducing the risk of breakage.

[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A 3D-bent flexible light strip, characterized in that, include: The FPC flexible circuit board includes several main board areas and bending areas located between adjacent main board areas. Each side of the main board area is provided with at least one horizontally extending protrusion. Several LEDs are provided on the main board area. The bending area is bent upward or downward and arched. The lamp housing is made of flexible material. The lamp housing has a stepped mounting cavity formed by the vertical connection of a top cavity and a bottom cavity. The width of the bottom cavity is adapted to the protrusion. The width of the top cavity is greater than or equal to the width of the bending area and less than the width of the bottom cavity. The bending area arches into the top cavity.

2. The 3D-bent flexible light strip according to claim 1, characterized in that, The length of the protrusion is more than 30% of the length of the motherboard area.

3. The 3D-bent flexible light strip according to claim 1, characterized in that, The bending area is a semi-circular arch, a semi-waist-shaped arch, or a triangular arch with rounded corners.

4. The 3D-bent flexible light strip according to claim 1, characterized in that, The bottom cavity has a compression chamber on the side outside the motherboard area, and the compression chamber compresses the protrusion from top to bottom.

5. A 3D-bent flexible light strip according to claim 1, characterized in that, The protrusion is a rectangular protrusion or a trapezoidal protrusion.

6. A 3D-bent flexible light strip according to claim 1, characterized in that, The corners of the protrusion have rounded chamfers.

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