Light bar structure and its adhesive structure

Abstract

A light strip structure includes a light panel, a circuit board, and an adhesive structure. The circuit board is electrically connected to the light panel. The adhesive structure covers the connection between the circuit board and the light panel. The adhesive structure includes an adhesive portion and a plurality of grooves formed within the adhesive portion, wherein the depth of the grooves is less than the thickness of the adhesive portion.

Description

LED strip structure and its adhesive structure LIGHT BAR STRUCTURE AND ITS ADHESIVE STRUCTURE Technical Field

[0001] This disclosure relates to an adhesive structure, and more particularly to an adhesive structure for a light strip. Prior Technology

[0002] Most commercially available LED strip structures currently use adhesive tape as the primary bonding structure. This type of tape is typically double-sided acrylic tape or thermally conductive tape. Its advantages include simple installation; simply peel off the protective film to attach the circuit board to the LED panel, eliminating the need for additional screws or clamps and effectively reducing assembly costs and time. Furthermore, tape bonding provides some cushioning and insulation, offering protection for the LED strip in bending or vibration environments. The advantages of tape bonding include its lightweight, space-saving design, ease of installation, and sufficient adhesive strength in most everyday lighting or decorative applications. However, tape bonding also has some disadvantages, such as the tendency for bulges or warping after tape application, leading to instability in the LED strip structure. Summary of the Invention

[0003] This disclosure proposes a light strip structure and its adhesive structure, which solves the problems of prior art.

[0004] According to one embodiment of the present disclosure, an adhesive structure includes an adhesive portion and a plurality of grooves formed within the adhesive portion, wherein the depth of the grooves is less than the thickness of the adhesive portion.

[0005] According to another embodiment of this disclosure, the adhesive portion is L-shaped.

[0006] According to another embodiment of this disclosure, the grooves include two pairs of parallel grooves adjacent to the corner of the L-shape.

[0007] According to another embodiment of this disclosure, the adhesive portion is cross-shaped.

[0008] According to another embodiment of this disclosure, the grooves comprise three pairs of parallel grooves adjacent to the intersection of the cross shape.

[0009] According to another embodiment of this disclosure, the adhesive portion is T-shaped.

[0010] According to another embodiment of this disclosure, the grooves comprise two pairs of parallel grooves adjacent to the intersection of the T-shape.

[0011] According to another embodiment of this disclosure, the depth of the groove is between one-third and two-thirds of the thickness of the adhesive portion.

[0012] This disclosure proposes a light strip structure comprising a light board, a circuit board, and an adhesive structure. The circuit board is electrically connected to the light board. The adhesive structure covers the connection point between the circuit board and the light board.

[0013] According to another embodiment of this disclosure, the distance between two adjacent recesses is equal to the total thickness of the lamp panel plus the circuit board.

[0014] Because the adhesive structure disclosed herein has grooves, when the adhesive structure is bent to cover the lamp board and the circuit board, there is less compression of the adhesive material inside the original groove structure at the bending point, which reduces the outward pushing stress. This not only improves the shortcomings of tape adhesion that is prone to protrusion or warping, but also achieves higher structural stability and application flexibility through the groove and diverse adhesive part shape design.

[0015] Further design variations include elongated adhesive sections suitable for linear structures, L-shaped adhesive sections suitable for corner structures, cross-shaped adhesive sections suitable for multi-directional intersecting structures, and T-shaped adhesive sections suitable for connecting main sections and branches. This diverse design not only expands the applicability of the light strip structure but also provides a more stable and reliable solution for different types of lighting applications.

[0016] In addition, the depth and spacing of the grooves not only improve bending ability and tightness, but also reduce poor appearance after covering, giving the light strip structure better appearance quality and market competitiveness.

[0017] Furthermore, the adhesive structure possesses insulation, waterproof, and dustproof properties, which can extend the lifespan of the lamp board and circuit board, further enhancing the overall value of the product.

[0018] The above description will be explained in detail below with reference to the embodiments, and a further explanation of the technical solution disclosed herein will be provided. Simple Explanation of the Diagram

[0019] To make the above and other objects, features, advantages and embodiments of this disclosure more apparent and understandable, the accompanying drawings are described below: Figure 1 is a top view illustrating the light bar structure of some embodiments disclosed herein; Figure 2A is a top view of the light bar structure of the first embodiment disclosed herein; Figure 2B is an exploded view of the light bar structure of the first embodiment disclosed herein; Figure 3A is a top view of the light bar structure of the second embodiment disclosed herein; Figure 3B is an exploded view of the light bar structure of the second embodiment disclosed herein; Figure 4A shows a top view of the light bar structure of the third embodiment disclosed herein; Figure 4B is an exploded view of the light bar structure of the third embodiment disclosed herein; Figure 5A shows a top view of the light bar structure of the fourth embodiment disclosed herein; and Figure 5B is an exploded view of the light bar structure of the fourth embodiment disclosed herein; Figure 6 is a schematic cross-sectional view of the adhesive structure of some embodiments disclosed herein; and Figure 7 is a cross-sectional schematic diagram of the adhesive structure of some embodiments disclosed herein. Implementation

[0020] To make the description of this disclosure more detailed and complete, reference can be made to the accompanying drawings and the various embodiments described below, in which the same numbers represent the same or similar elements. Furthermore, well-known elements and steps are not described in the embodiments to avoid unnecessarily limiting this disclosure.

[0021] In the implementation methods and the scope of the patent application, unless otherwise specifically defined in the text, "a" and "the" may refer to a single or multiple entities.

[0022] Please refer to Figure 1, which shows a top view of a light strip structure 100 according to some embodiments of the present disclosure. The light strip structure 100 includes a light panel 120, a circuit board 130, and an adhesive structure 150. The circuit board 130 is electrically connected to the light panel 120 to provide power and control signals. The adhesive structure 150 is used to cover the connection between the circuit board 130 and the light panel 120, making the connection more secure and providing insulation, waterproofing, and other protection.

[0023] In the embodiments disclosed herein, the lamp panel 120 includes a plurality of light sources 122, which may be light-emitting diodes. The circuit board 130 may be a flexible circuit board or a rigid circuit board. The lamp panel 120 may be a rigid circuit board.

[0024] Please refer to Figures 2A and 2B, which respectively illustrate the top view and exploded view of the light strip structure of the first embodiment disclosed herein. For ease of understanding, Figure 2A only shows the state of one of the adhesive surfaces of the adhesive structure before bonding. The light strip structure 100 includes a light board 120, a circuit board 130a, and an adhesive structure 150a for bonding the light board 120 and the circuit board 130a, wherein the light board 120 and the circuit board 130a are connected in an L-shape. The adhesive structure 150a includes an adhesive portion 151a and a plurality of grooves 152. These grooves 152 are formed within the adhesive portion 151a. In the embodiment disclosed herein, these grooves 152 are elongated and parallel to each other.

[0025] In the first embodiment disclosed herein, the grooves 152 are arranged in pairs, i.e., two grooves form a pair. The elongated adhesive portion 151a can be bent by the two parallel grooves 152, i.e., the adhesive surface A can be brought closer to the adhesive surface B, thereby achieving the connection 124 of covering the lamp board 120 and the circuit board 130a. Specifically, the lamp board 120 has a long side extending along a first direction D1. The circuit board 130a has a long side extending along a second direction D2, wherein the first direction D1 is perpendicular to the second direction D2. The electrical contact surface 124b at one end of the lamp board 120 is joined to the electrical contact surface 124a at one end of the circuit board 130a to form an electrical connection and form a connection 124. The adhesive surface B of the adhesive structure 150a is adhered to the opposite outer surface of the electrical bonding surface 124b of the lamp board 120, and the adhesive surface A of the adhesive structure 150a is adhered to the opposite outer surface of the electrical bonding surface 124a of the circuit board 130a, wherein the groove 152 is located at the bend of the adhesive structure 150a. The adhesive structure 150a between the two grooves 152 is attached to one side of the circuit board 130a that overlaps with the lamp board 120.

[0026] Please refer to Figures 3A and 3B, which respectively illustrate the top view and exploded view of the light strip structure of the second embodiment disclosed herein. For ease of understanding, Figure 3A only shows the state of one of the adhesive surfaces of the adhesive structure before bonding. The light strip structure 100 includes a light board 120, a circuit board 130b, and an adhesive structure 150b for bonding the light board 120 and the circuit board 130b, wherein the light board 120 and the circuit board 130b are connected in a T-shape. The adhesive structure 150b includes an adhesive portion 151a, an adhesive portion 151b, and a plurality of grooves 152. When not bonded, the adhesive portion 151a and the adhesive portion 151b form an L-shaped adhesive portion. The grooves 152 are respectively formed in the adhesive portion 151a and the adhesive portion 151b. In the embodiment disclosed herein, the grooves 152 are elongated.

[0027] In the second embodiment, the grooves 152 include a first pair of grooves 152a and a second pair of grooves 152b, wherein each pair of grooves includes two parallel grooves. The first pair of grooves 152a is located within the adhesive portion 151a and adjacent to the corner of the L-shape, and the second pair of grooves 152b is located within the adhesive portion 151b and adjacent to one end of the circuit board 130b. The first pair of grooves 152a is perpendicular to the second pair of grooves 152b. The adhesive portion 151a and the adhesive portion 151b can be bent by the two pairs of parallel grooves 152 to cover the connection 125 between the lamp panel 120 and the circuit board 130b. Specifically, the lamp panel 120 has a long side extending along a first direction D1. The circuit board 130b has a long side extending along a second direction D2, wherein the first direction D1 is perpendicular to the second direction D2. An electrical contact surface 125b at one end of the lamp board 120 is joined to an electrical contact surface 125a at one end of the circuit board 130b to form an electrical connection and a connection point 125. Next, the adhesive portion 151a of the adhesive structure 150b is adhered to a bottom surface of the lamp board 120. A portion of the adhesive portion 151b is bent upwards and adhered to the top surface of the circuit board 130b via a first pair of grooves 152a, while another portion of the adhesive portion 151b is bent downwards and adhered to the bottom surface of the circuit board via a second pair of grooves 152b. The first pair of grooves 152a and the second pair of grooves 152b are respectively located at two bends in the adhesive structure 150a.

[0028] Please refer to Figures 4A and 4B, which respectively illustrate the top view and exploded view of the light strip structure of the third embodiment disclosed herein. For ease of understanding, Figure 4A only shows the state of one of the adhesive surfaces of the adhesive structure before bonding. The light strip structure 100 includes a light board 120, a circuit board 130c, and an adhesive structure 150c bonding the light board 120 and the circuit board 130c. The circuit board 130c is L-shaped, and the light board 120 and the circuit board 130c are connected to form a T-shape. The adhesive structure 150c includes an adhesive portion 151a, a plurality of adhesive portions 151c, and a plurality of grooves 152. When not bonded, the adhesive portion 151a and the plurality of adhesive portions 151c form a cross-shaped adhesive portion. The grooves 152 are respectively formed in the adhesive portions 151a and 151c. In the embodiment disclosed herein, the grooves 152 are elongated.

[0029] In the third embodiment, the grooves 152 include a plurality of pairs of grooves 152a, wherein each pair of grooves includes two parallel grooves. The plurality of pairs of grooves 152a are respectively adjacent to the intersection of the cross shape, and the adhesive portion 151a and the plurality of adhesive portions 151c can be bent by the plurality of pairs of grooves 152a to cover the connection 126 between the lamp panel 120 and the circuit board 130c. Specifically, the lamp panel 120 has a long side extending along a first direction D1. The L-shaped circuit board 130 has one long side extending along the first direction D1 and the other long side extending along a second direction D2, wherein the first direction D1 is perpendicular to the second direction D2. The electrical contact surface 126b at one end of the lamp panel 120 is engaged with the electrical contact surface 126a at one end of the circuit board 130c to form an electrical connection and form a connection 126. A portion of the adhesive part 151a is adhered to the lower side of the electrical contact surface 126b of the lamp board 120. A plurality of adhesive parts 151c are respectively bent through corresponding pairs of grooves 152a and then adhered to the upper side of the electrical contact surface 126a of the circuit board 130c. The plurality of adhesive parts 151c are then bent and adhered to the circuit board 130c. In this embodiment, the grooves 152 include three pairs of grooves 152a located at three bends in the adhesive structure 150c.

[0030] Please refer to Figures 5A and 5B, which respectively illustrate the top view and exploded view of the light strip structure of the fourth embodiment disclosed herein. For ease of understanding, Figure 5A only shows the state of one of the adhesive surfaces of the adhesive structure before bonding. The light strip structure 100 includes a light board 120, a circuit board 130d, and an adhesive structure 150d for bonding the light board 120 and the circuit board 130d, wherein the light board 120 and the circuit board 130d are connected in a T-shape. The adhesive structure 150d includes an adhesive portion 151a, a plurality of adhesive portions 151d, and a plurality of grooves 152. When not bonded, the adhesive portions 151a and 151d form a T-shaped adhesive portion. The grooves 152 are formed within the adhesive portions 151a and 151d. In the embodiment disclosed herein, the grooves 152 are elongated.

[0031] In the fourth embodiment, the grooves 152 include a plurality of pairs of grooves 152a, wherein each pair of grooves includes two parallel grooves. The plurality of pairs of grooves 152a are respectively adjacent to the intersection 151e of the T-shape, and the adhesive portion 151a and the plurality of adhesive portions 151d can be bent by the plurality of pairs of grooves 152 to cover the connection 127 of the lamp board 120 and the circuit board 130d. Specifically, the lamp board 120 has a long side extending along a first direction D1. The L-shaped circuit board 130d has a long side of one arm extending along the first direction D1 and a long side of the other arm extending along a second direction D2, wherein the first direction D1 is perpendicular to the second direction D2. The electrical contact surface 127b at one end of the lamp board 120 is joined to the electrical contact surface 127a at one end of the circuit board 130d to form an electrical connection and form a connection 127. The adhesive portion 151a is adhered to the lower side of the electrical bonding surface 127b of the lamp board 120, and the plurality of adhesive portions 151d are respectively adhered to the upper side of the electrical bonding surface 127a of the circuit board 130d after being bent by corresponding plurality of pairs of grooves 152a. In this embodiment, the grooves 152 include 3 pairs of grooves 152a located at the three bends of the adhesive structure 150d.

[0032] Please refer to Figures 6 and 7, which illustrate cross-sectional schematic diagrams of the adhesive structure according to the embodiments disclosed herein. In the embodiments disclosed herein, the grooves 152 included in the adhesive portion 151 can be formed by cutting the surface of the adhesive portion 151 with a cutting tool. In the embodiments disclosed herein, the depth D of each groove 152 is less than the thickness T of the adhesive portion 151. In the embodiments disclosed herein, the depth D of each groove 152 is between one-third and two-thirds of the thickness T of the adhesive portion 151, and this remaining thickness can prevent the adhesive portion 151 from easily breaking after bending. In the embodiments disclosed herein, the distance G between two adjacent grooves 152 is not less than 90% and / or not greater than 110% of the total thickness of the lamp board 120 superimposed circuit board 130, which can prevent the adhesive portion 151 from bulging or warping after bending.

[0033] The LED strip structure 100 disclosed herein addresses the shortcomings of conventional designs. In addition to the two main electrical components, the LED strip structure 100 includes an LED panel 120 and a circuit board 130, it further incorporates an adhesive structure 150. The adhesive structure 150 is not simply designed using a flat adhesive layer; instead, it incorporates an adhesive portion 151 with a groove 152. Due to the presence of the groove 152, the adhesive portion 151 can be bent without breaking. This means that the bending point has less of the adhesive material compressed within the original groove structure, reducing outward pushing stress and allowing it to more tightly and evenly cover the connection between the LED panel 120 and the circuit board 130 (see Figure 7). This design not only avoids bulging or warping problems caused by uneven coverage but also provides stronger structural stability and a smoother appearance.

[0034] Although the present disclosure has been described above with reference to embodiments, it is not intended to limit the present disclosure. Anyone skilled in the art may make various modifications and refinements without departing from the spirit and scope of the present disclosure. Therefore, the scope of protection of the present disclosure shall be determined by the claims attached.

[0035] 100: Light strip structure 120: Light board 122: Light source 124: Connection 124a: Electrical bonding 124b: Electrical bonding surface 125: Connection 125a: Electrical bonding surface 125b: Electrical bonding surface 126: Connection 126a: Electrical bonding surface 126b: Electrical bonding surface 127: Connection 127a: Electrical bonding surface 127b: Electrical bonding surface 130: Circuit board 130a: Circuit board 130b: Circuit board 130c: Circuit board 130d: Circuit board 150: Adhesive structure 150a: Adhesive structure 150b: Adhesive structure 150c: Adhesive structure 150d: Adhesive structure 151: Adhesion Part 151a: Adhesion part 151b: Adhesive part 151c: Adhesive part 151d: Adhesion part 151e: Intersection 152, 152a, 152b: Groove T: Thickness D: Depth D1: First Direction D2: Second Direction G: Spacing A: Sticky surface B: Adhesive surface

Claims

1. An adhesive structure comprising: One adhesive part; And a plurality of grooves are formed in the adhesive portion, wherein the depth of the grooves is less than the thickness of the adhesive portion.

2. The adhesive structure as described in claim 1, wherein the adhesive portion is L-shaped.

3. The adhesive structure as described in claim 2, wherein the grooves comprise two pairs of parallel grooves adjacent to the corner of the L-shape.

4. The adhesive structure as described in claim 1, wherein the adhesive portion is cross-shaped.

5. The adhesive structure as described in claim 4, wherein the grooves comprise three pairs of parallel grooves adjacent to the intersection of the cross shape.

6. The adhesive structure as described in claim 1, wherein the adhesive portion is T-shaped.

7. The adhesive structure as described in claim 6, wherein the grooves comprise two pairs of parallel grooves adjacent to the intersection of the T-shape.

8. The adhesive structure as described in claim 1, wherein the depth of the grooves is between one-third and two-thirds of the thickness of the adhesive portion.

9. A light strip structure, comprising: One light panel; A circuit board, electrically connected to the lamp board; And an adhesive structure as described in any one of claims 1 to 8, covering the connection between the circuit board and the lamp board.

10. The light strip structure as described in claim 9, wherein the distance between two adjacent recesses is equal to the total thickness of the light panel superimposed on the circuit board.

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