Mounting type emblem light source and circuit board thereof

Abstract

This utility model relates to the field of lighting elements for car logos, specifically to a surface-mount car logo light source and its circuit board. The circuit board includes a main body with a shape corresponding to the car logo. One side of the main body is a chip mounting surface for setting LED chips, and the side opposite to the chip mounting surface is a planar main body adhesive surface. Circuits connecting the LED chips are distributed on the main body. The tab portion is a sheet-like structure located at the edge of the main body, with multiple tabs arranged along the edge. A notch structure is formed between adjacent tab portions. The tab portion has a tab adhesive surface for attaching to the car logo. The tab adhesive surface and the main body adhesive surface are located on the same side of the surface-mount car logo light source circuit board, and at least the tab portion is a flexible structure, so that each tab portion can be bent relative to the main body in the direction away from the chip mounting surface, ensuring that the circuit board can fit with the curved surface of the car logo, and realizing stable mounting of the light source on the car logo.

Description

Technical Field

[0001] This utility model relates to the field of lighting elements for car logos, specifically to a sticker-type car logo light source and its circuit board. Background Technology

[0002] To improve the visibility and aesthetics of car logos at night, some technologies incorporate light sources to illuminate the logo. One approach is to mechanically assemble the light source within the logo assembly, but this method presents significant technical challenges due to its complex structure. Another option is a COB (Chip-on-Board) LED strip structure. This structure integrates multiple LED chips onto a single substrate (PCB, or printed circuit board) and encapsulates them with adhesive. An adhesive layer is applied to the side of the substrate facing away from the LED chips, allowing the light source to be adhered to the logo.

[0003] In reality, car logos are generally three-dimensional with irregular and curved surfaces, while the surface of the substrate that mates with the car logo is flat. When the flat surface of the substrate is pasted onto the curved surface of the car logo, it is not easy for it to fit completely. After long-term use, the car logo light source is prone to falling off the car logo, making it difficult to reliably and stably stick and fix the car logo light source on the car logo. Utility Model Content

[0004] This utility model provides a sticker-type car logo light source and its circuit board to achieve reliable and stable sticker-type car logo light source on car logo.

[0005] In a first aspect, this utility model provides a surface-mount vehicle logo light source circuit board, comprising:

[0006] The main body has a shape corresponding to the car logo. One side of the main body is a chip mounting surface for setting LED chips, and the side of the main body opposite to the chip mounting surface is a main adhesive surface for pasting the car logo. The main adhesive surface has a planar structure.

[0007] A circuit, at least partially distributed on the main body portion, for conductive connection with the LED chip;

[0008] The protruding tabs are sheet-like structures located at the edge of the main body. Multiple protruding tabs are arranged along the edge, and a notch structure is formed between two adjacent protruding tabs. Each protruding tab has a protruding adhesive surface for attaching to the car logo.

[0009] The tab bonding surface and the main body bonding surface are located on the same side of the mountable car logo light source circuit board, and at least the tab portion is a flexible structure, so that each tab portion can be bent relative to the main body portion in a direction away from the chip mounting surface.

[0010] In one technical solution, the adjacent two protrusion portions are transitioned by an arc-shaped structure.

[0011] In one technical solution, the outline of the protrusion portion is one or more of the following: arc shape, rectangle, and triangle.

[0012] In one technical solution, the convex portion is provided with a copper foil layer.

[0013] In one technical solution, the main body includes a strip-shaped portion, and the edges on both sides of the width of the strip-shaped portion have the tab portion. Both the main body and the tab portion are flexible structures.

[0014] Secondly, this utility model also provides an adhesive-type vehicle logo light source, comprising:

[0015] The circuit board is the surface-mounted vehicle logo light source circuit board in any of the above technical solutions.

[0016] LED chips are distributed on the circuit board;

[0017] And an adhesive layer, located on the main adhesive surface and the protruding adhesive surface, for attaching to the car logo.

[0018] In one technical solution, the sticker-type vehicle logo light source encapsulates the LED chip on the circuit board using encapsulating adhesive, and a reflective layer is provided between the encapsulating adhesive and the circuit board at least on the side of the LED chip.

[0019] In one technical solution, the main body has an insulating dam that encloses a chip mounting area, the LED chip is disposed within the chip mounting area, the encapsulating adhesive fills the chip mounting area, and the reflective layer is located within the chip mounting area.

[0020] In one technical solution, the LED chip is elongated, with the ends of each LED chip along its length facing the edge of the main body.

[0021] In one technical solution, the main body includes at least two intersecting strip-shaped portions, one of which is a first strip-shaped portion and the other is a second strip-shaped portion. LED chips are arranged at the intersection, and some of the LED chips arranged at the intersection have their ends along the length direction facing the edge of the first strip-shaped portion, while the ends along the length direction of some of the LED chips face the edge of the second strip-shaped portion.

[0022] The beneficial effects of this utility model are as follows:

[0023] The circuit board of the sticker-type car logo light source in this utility model includes a main body and sheet-like protruding parts. The sheet-like protruding parts are disposed on the edge of the main body. The notch structure between two adjacent protruding parts makes each protruding part easy to deform. Thus, when the sticker-type car logo light source is pasted onto the car logo, the flexible circuit board can be made to fit as close as possible to the curved surface of the car logo by deforming the protruding parts relative to the main body. This ensures that there is sufficient bonding area between the sticker-type car logo light source and the car logo, reduces the internal stress of bending the curved surface, and achieves stable and reliable bonding of the sticker-type car logo light source onto the car logo. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the LED chip of the surface-mount vehicle logo light source being packaged on a circuit board in one embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the circuit board of the sticker-type car logo light source in one embodiment of the present invention;

[0026] Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle;

[0027] Figure 4 This is a schematic diagram of the structure of the sticker-type car logo light source being pasted on the corresponding car logo in one embodiment of this utility model;

[0028] Figure 5 This is a schematic diagram of the circuit board of the sticker-type car logo light source in another embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the circuit board of the sticker-type car logo light source in another embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the LED chip arrangement on the circuit board of a surface-mount vehicle logo light source in one embodiment of the present invention.

[0031] List of feature names corresponding to the labels in the figure:

[0032] 1. Circuit board; 11. Main body; 111. First strip-shaped portion; 112. Second strip-shaped portion; 12. Protruding piece; 13. Notch structure; 14. Arc-shaped structure; 15. Outlet hole;

[0033] 2. LED chips;

[0034] 3. Encapsulating adhesive;

[0035] 4. Insulated dam;

[0036] 5. Car logo. Detailed Implementation

[0037] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0038] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0039] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0040] The circuit board of the sticker-type car logo light source of this utility model includes a main body and a protruding part. An LED chip is set on the main body so that the sticker-type car logo light source can emit light. The protruding part is set on the edge of the main body, and there is a notch structure between two adjacent protruding parts. Combined with the fact that the protruding part is a flexible structure, it can deform relative to the main body. In this way, when the sticker-type car logo light source is attached to the corresponding car logo, the main body is attached to the car logo. At the same time, through the bending deformation of the protruding part relative to the main body, the circuit board as a whole can adapt to the curved surface of the car logo, ensuring that the circuit board and the car logo have a large bonding area, and realizing the stable and reliable attachment of the sticker-type car logo light source to the car logo.

[0041] An embodiment of the sticker-type vehicle logo light source in this utility model:

[0042] In one embodiment, the sticker-type vehicle emblem light source is a COB light source; please refer to [reference needed]. Figure 1 The system includes a circuit board 1 and multiple LED chips 2 disposed on the circuit board 1. The LED chips 2 include, but are not limited to, blue light chips, white light chips, and RGB combinations. The sticker-type logo light source is used to be attached to the corresponding logo 5 to enable the logo 5 to emit light. In this embodiment, the corresponding logo 5 is the Toyota logo as an example. In other embodiments, the shape of the sticker-type logo light source can correspond to the shape of other logos 5.

[0043] For the shape of circuit board 1, please refer to Figure 2 and Figure 3 The circuit board 1 includes a main body 11, which has a shape corresponding to the car logo 5. One side of the main body 11 is a chip mounting surface for mounting the LED chip 2. The main body 11 has circuitry that is electrically connected to the LED chip 2 to enable the LED chip 2 to emit light when powered. The side of the main body 11 facing away from the chip mounting surface is a main adhesive surface. The main adhesive surface has a planar structure and an adhesive layer, allowing the main body 11 to be adhered and fixed to the corresponding car logo 5. It should be noted that the main adhesive surface is only one surface of the main body 11 and does not contain adhesive itself; the adhesive layer is a layer of adhesive applied to the main adhesive surface.

[0044] Considering that the car logo 5 has a three-dimensional structure with a curved surface, to ensure a sufficiently large bonding area between the circuit board 1 and the car logo 5, the circuit board 1 also includes a protruding tab portion 12 located on the edge of the main body portion 11. The protruding tab portion 12 has a sheet-like structure, and multiple protruding tab portions 12 are arranged along the edge of the main body portion 11. There is a notch structure 13 between adjacent protruding tab portions 12, so that each protruding tab portion 12 is relatively independent. Furthermore, the protruding tab portion 12 has a flexible structure. This flexible structure is designed to ensure that when the sticker-type car logo light source is pasted onto the corresponding car logo 5, the protruding tab portion 12 can deform relative to the main body portion 11 toward the corresponding car logo 5, and the deformation direction is also the direction away from the side where the LED chip 2 is located.

[0045] Similar to the main body 11, the tab portion 12 has a tab-adhesive surface. This tab-adhesive surface is one side of the tab portion 12 and has no adhesive itself. An adhesive layer is applied to the tab-adhesive surface, allowing the tab portion 12 to be adhered to the car emblem 5. The tab-adhesive surface and the main body adhesive surface are located on the same side of the circuit board 1, i.e., the side facing away from the LED chip 2. Therefore, when attaching this mountable car emblem light source to the corresponding car emblem 5, please refer to... Figure 4 The main body 11 is bonded to the car logo 5 through the adhesive layer on the main body bonding surface. At the same time, for the curved surface of the car logo 5, each protruding part 12 is pressed to bend and bond with the car logo 5. That is, the circuit board 1 as a whole has the ability to deform and can adapt to the curved surface of the car logo 5, so as to achieve the bonding of the circuit board 1 on the curved surface of the car logo 5, ensure the mounting area, increase the bonding force between the mounted car logo light source and the car logo 5, and the notch structure 13 can reduce the internal stress of the curved bending, enhance the fit between the protruding part 12 and the car logo 5, and enhance the overall heat dissipation capacity.

[0046] In order to allow wires to pass through, the circuit board 1 also has a wire outlet hole 15 on the main body 11.

[0047] In one embodiment, please refer to Figure 3 Adjacent tab portions 12 are transitioned by an arc-shaped structure 14, thus achieving a smooth curved connection between adjacent tab portions 12, increasing the strength at the notch structure 13 of the circuit board 1, and reducing the risk of stress causing the circuit board 1 to crack. Further, in one embodiment, the outline of the tab portion 12 is arc-shaped, and combined with the arc-shaped structure 14, the arcs are connected in an arc shape, increasing the structural strength of the circuit board 1.

[0048] For the outline shape of the tab portion 12, please refer to other embodiments. Figure 5 and Figure 6The outline shape of the protruding portion 12 is rectangular or triangular. Of course, provided that the usage requirements are met, the shape of the protruding portion 12 can also be a combination of various shapes, such as some protruding portions 12 having an arc shape, some having a rectangular shape, and some having a triangular shape. Naturally, the shape of the protruding portion 12 is not limited to... Figure 2 , Figure 5 and Figure 6 In other embodiments of the structure shown, the outline of the tab portion 12 may also be other shapes, such as trapezoids, provided that the usage requirements are met.

[0049] In some embodiments, a copper foil layer is provided on the tab portion 12. Copper has very good lateral thermal conductivity, which can quickly direct the heat of the LED chip 2 to the tab portion 12, thereby directing it to a wider heat dissipation area and reducing the heat and temperature of the functional area.

[0050] In one embodiment, please refer to Figure 2 , Figure 5 and Figure 6 The main body 11 has a strip-shaped portion, and both sides of the strip-shaped portion have protruding portions 12 in the width direction to ensure that the circuit board 1 and the car logo 5 have a sufficiently large bonding area. Furthermore, the size of the protruding portions 12 located on the inner edge of the strip-shaped portion is smaller than the size of the protruding portions 12 located on the outer edge of the strip-shaped portion to prevent the inner protruding portions 12 from overlapping during mounting. The dimension between the chip mounting surface of the strip-shaped portion and the bonding surface of the main body is the thickness dimension; the width of the strip-shaped portion referred to here is the dimension perpendicular to the edge.

[0051] In one embodiment, both the main body portion 11 and the tab portion 12 of the circuit board 1 are flexible structures. In this case, the circuit board 1 is an integrally deformable flexible circuit board, and the main body portion 11 and the tab portion 12 can be integrally formed. The circuit board 1 can be an FPC substrate. In other embodiments, only the tab portion 12 may be a deformable flexible structure.

[0052] Regarding the specific structure of the sticker-type car logo light source, such as Figure 1As shown, each LED chip 2 is encapsulated on the circuit board 1 using encapsulating adhesive 3. The encapsulating adhesive 3 is a non-thixotropic molding material, but rather a high-reliability silicone-based adhesive with good flowability, ensuring the light source structure meets automotive-grade requirements. A reflective layer is placed between the encapsulating adhesive 3 on the side of the LED chip 2 and the circuit board 1 to improve brightness and airtightness. To determine the area of ​​the encapsulating adhesive 3 during the manufacturing stage, this mountable automotive logo light source also has two insulating barriers 4 arranged along the width of the strip-shaped circuit board 1. The insulating barriers 4 enclose the chip mounting area, where the LED chip 2 is placed. The encapsulating adhesive 3 is formed between the two insulating barriers 4, i.e., formed within the chip mounting area, covering both the LED chip 2 and the circuit board 1. The reflective layer is located within the chip mounting area and is formed of white adhesive. The insulating barriers 4 are wall structures and can be white, black, or transparent.

[0053] To ensure the brightness of the edge of the sticker-type car logo light source and prevent or reduce the appearance of dark areas at the edge, in one embodiment, please refer to... Figure 7 The LED chip 2 is elongated, with the ends of each LED chip 2 along its length facing the edge of the main body 11. That is, the length of the LED chip 2 is perpendicular to the edge of the main body 11 and is set on the chip mounting surface. They are evenly distributed according to the size of the space, making the light-emitting space distribution more uniform, enhancing the light intensity on both sides, and eliminating obvious dark areas on both sides.

[0054] For example, please refer to the Toyota logo-shaped sticker-type car emblem light source. Figure 7 The main body 11 includes multiple intersecting strip-shaped sections, one of which is designated as the first strip-shaped section 111, and the other as the second strip-shaped section 112. LED chips 2 are arranged at the intersection. Since the intersection area is relatively large, multiple LED chips 2 are arranged there. Some LED chips 2 have both ends along their length pointing towards the edge of the first strip-shaped section 111, while others have both ends along their length pointing towards the edge of the second strip-shaped section 112. The phrase "both ends along the length of the LED chip 2 pointing towards the edge of the first strip-shaped section 111" means that, although there is no clearly defined edge of the first strip-shaped section 111 at the intersection, the edge of the first strip-shaped section 111 extends to the intersection area, and the ends of the LED chip 2 point towards the edge extended to the intersection area. The same applies to the ends of the LED chip 2 pointing towards the edge of the second strip-shaped section 112.

[0055] This utility model also provides a sticker-type car logo light source circuit board, which has the same structure as the circuit board 1 in the above-mentioned embodiments of sticker-type car logo light sources, and will not be described again here.

[0056] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A surface-mount vehicle logo light source circuit board, characterized in that, include: The main body has a shape corresponding to the car logo. One side of the main body is a chip mounting surface for setting LED chips, and the side of the main body opposite to the chip mounting surface is a main adhesive surface for pasting the car logo. The main adhesive surface has a planar structure. A circuit, at least partially distributed on the main body portion, for conductive connection with the LED chip; The protruding tabs are sheet-like structures located at the edge of the main body. Multiple protruding tabs are arranged along the edge, and a notch structure is formed between two adjacent protruding tabs. Each protruding tab has a protruding adhesive surface for attaching to the car logo. The tab bonding surface and the main body bonding surface are located on the same side of the mountable car logo light source circuit board, and at least the tab portion is a flexible structure, so that each tab portion can be bent relative to the main body portion in a direction away from the chip mounting surface.

2. The surface-mount vehicle logo light source circuit board as described in claim 1, characterized in that, The two adjacent protrusion portions are transitioned by an arc-shaped structure.

3. The surface-mount vehicle logo light source circuit board as described in claim 1 or 2, characterized in that, The outline of the protrusion portion is one or more of the following: arc shape, rectangle, and triangle.

4. The surface-mount vehicle logo light source circuit board as described in claim 1 or 2, characterized in that, The protruding portion is provided with a copper foil layer.

5. The surface-mount vehicle logo light source circuit board as described in claim 1 or 2, characterized in that, The main body includes a strip-shaped portion, and the edges on both sides of the width of the strip-shaped portion have the tab portion. Both the main body and the tab portion are flexible structures.

6. A sticker-type vehicle emblem light source, characterized in that, include: The circuit board is the mounting-type vehicle logo light source circuit board as described in any one of claims 1-5; LED chips are distributed on the circuit board; And an adhesive layer, located on the main adhesive surface and the protruding adhesive surface, for attaching to the car logo.

7. The sticker-type vehicle emblem light source as described in claim 6, characterized in that, The sticker-type vehicle logo light source encapsulates the LED chip on the circuit board using encapsulating adhesive, and a reflective layer is provided between the encapsulating adhesive and the circuit board at least on the side of the LED chip.

8. The sticker-type vehicle emblem light source as described in claim 7, characterized in that, The main body has an insulating dam that encloses a chip mounting area. The LED chip is disposed within the chip mounting area. The encapsulating adhesive fills the chip mounting area. The reflective layer is located within the chip mounting area.

9. The sticker-type vehicle emblem light source as described in any one of claims 6-8, characterized in that, The LED chip is elongated, with the ends of each LED chip along its length facing the edge of the main body.

10. The sticker-type vehicle emblem light source as described in claim 9, characterized in that, The main body includes at least two intersecting strip-shaped portions, one of which is a first strip-shaped portion and the other is a second strip-shaped portion. LED chips are arranged at the intersection, and some of the LED chips arranged at the intersection have their ends along the length direction facing the edge of the first strip-shaped portion, while the ends along the length direction of some of the LED chips face the edge of the second strip-shaped portion.

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