Surface-mounted vehicle logo light source and circuit substrate thereof

Abstract

The invention relates to the field of lighting elements for vehicle logos, in particular to a surface-mounted vehicle logo light source and a circuit substrate thereof, the circuit substrate comprises a main body part, the main body part has a shape corresponding to a vehicle logo, one side surface of the main body part is a chip mounting surface provided with an LED chip, and the surface opposite to the chip mounting surface is a main body bonding surface of a plane structure; a circuit connected with an LED chip is distributed on the main body part, the protruding piece part is of a sheet-shaped structure located on the edge portion of the main body part, a plurality of protruding pieces are arranged along the edge portion, a notch structure is formed between every two adjacent protruding piece parts, and each protruding piece part is provided with a protruding piece pasting face used for being pasted with a car logo. The protruding piece pasting face and the main body pasting face are located on the same side of the surface-mounted type vehicle logo light source circuit substrate, and at least the protruding piece parts are of flexible structures, so that the protruding piece parts can be bent in the direction opposite to the chip installation face relative to the main body part, and it is guaranteed that the circuit substrate can be attached to the curved surface of a vehicle logo; therefore, the light source can be stably attached to the vehicle logo.

Description

Technical Field

[0001] The present invention relates to the field of lighting components for vehicle logos, and in particular to a surface-mounted vehicle logo light source and a circuit substrate thereof. Background Art

[0002] To enhance the visibility and aesthetics of vehicle logos at night, some related technologies incorporate a light source into the logo to illuminate it. While mechanical assembly can be used to install the light source within the logo assembly, this approach presents technical challenges with its complex structure. Alternatively, a COB light strip structure can be considered. This structure integrates multiple LED chips onto a single substrate (PCB) 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 attached to the logo.

[0003] The actual situation is that car logos are generally three-dimensional with irregular and curved surfaces, while the surfaces of the substrate and the car logo are flat. When the flat structure of the substrate is pasted on the curved surface of the car logo, it is not easy to fit completely with the car logo. After long-term use, the light source of the car logo is likely to fall off from the car logo, making it difficult to reliably and stably stick and fix the light source of the car logo on the car logo. Summary of the Invention

[0004] The present invention provides a mounted vehicle logo light source and a circuit substrate thereof, so as to realize reliable and stable mounting of the mounted vehicle logo light source on the vehicle logo.

[0005] In a first aspect, the present invention provides a surface-mounted vehicle logo light source circuit substrate, comprising: The main body has a shape corresponding to the vehicle logo, one side of the main body is a chip mounting surface for arranging an LED chip, and the side of the main body opposite to the chip mounting surface is a main body adhesive surface for adhering to the vehicle logo, and the main body adhesive surface is a planar structure; a circuit, wherein the circuit is at least partially distributed on the main body portion and is configured to be electrically connected to the LED chip; and a tab portion, which is a sheet-like structure and is located at the edge of the main body portion, wherein a plurality of tab portions are arranged along the edge, and a notch structure is formed between two adjacent tab portions, and the tab portion has a tab pasting surface for pasting the vehicle logo; The convex piece pasting surface and the main body pasting surface are located on the same side of the mounted vehicle logo light source circuit substrate, and at least the convex piece part is a flexible structure, so that each convex piece part can be bent relative to the main body part in the direction away from the chip mounting surface.

[0006] In one technical solution, two adjacent protruding parts are transitioned through an arc-shaped structure.

[0007] In one technical solution, the outline of the protruding piece portion is one or at least two of the following shapes: arc, rectangle, and triangle.

[0008] In one technical solution, the convex portion is provided with a copper foil layer.

[0009] In one technical solution, the main body portion includes a strip-shaped portion, the edges on both sides of the width of the strip-shaped portion have the convex portion, and the main body portion and the convex portion are both flexible structures.

[0010] In a second aspect, the present invention further provides a mountable vehicle logo light source, comprising: A circuit substrate, wherein the circuit substrate is a surface-mounted vehicle logo light source circuit substrate in any of the above technical solutions; LED chips are distributed on the circuit substrate; and an adhesive layer, which is located on the main body adhesive surface and the convex piece adhesive surface and is used for being adhered to the vehicle logo.

[0011] In a technical solution, the surface-mounted vehicle logo light source packages the LED chip on the circuit substrate through packaging glue, and a reflective layer is provided between the packaging glue and the circuit substrate at least on the side of the LED chip.

[0012] In one technical solution, the main body has an insulating dam, the insulating dam encloses a chip mounting area, the LED chip is arranged in the chip mounting area, the packaging glue fills the chip mounting area, and the reflective layer is located in the chip mounting area.

[0013] In one technical solution, the LED chips are in the shape of long strips, and the ends of the lengthwise directions of the LED chips are arranged toward the edges of the main body.

[0014] In a technical solution, the main body portion 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, and the LED chips are arranged at the intersection. Among the LED chips arranged at the intersection, the ends of the length direction of some of the LED chips are facing the edges of the first strip-shaped portion, and the ends of the length direction of some of the LED chips are facing the edges of the second strip-shaped portion.

[0015] The beneficial effects of the present invention are: The circuit substrate of the mountable vehicle logo light source in the present invention includes a main body part and a convex part of a sheet structure. The convex part of the sheet structure is arranged at the edge of the main body part. The notch structure between two adjacent convex parts makes each convex part easy to deform. In this way, when the mountable vehicle logo light source is pasted onto the vehicle logo, the convex part can be deformed relative to the main body part so that the flexible circuit substrate can fit as closely as possible to the curved surface of the vehicle logo, ensuring that there is sufficient pasting area between the mountable vehicle logo light source and the vehicle logo, reducing the internal stress of the curved surface bending, and realizing stable and reliable pasting of the mountable vehicle logo light source on the vehicle logo. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of an LED chip of a surface-mounted vehicle logo light source packaged on a circuit substrate in an embodiment of the present invention; Figure 2 This is a schematic structural diagram of a circuit substrate of a surface-mounted vehicle logo light source in one embodiment of the present invention; Figure 3 for Figure 2 A partial enlarged view of the middle part; Figure 4 This is a structural diagram of a mounted vehicle logo light source attached to a corresponding vehicle logo in one embodiment of the present invention; Figure 5 This is a structural schematic diagram of a circuit substrate of a surface-mounted vehicle logo light source in another embodiment of the present invention; Figure 6 This is a structural schematic diagram of a circuit substrate of a surface-mounted vehicle logo light source in another embodiment of the present invention; Figure 7 This is a schematic structural diagram of the arrangement of LED chips of a surface-mounted vehicle logo light source on a circuit substrate in an embodiment of the present invention.

[0017] List of feature names corresponding to the reference numerals in the figure: 1. Circuit board; 11. Main body; 111. First strip-shaped portion; 112. Second strip-shaped portion; 12. Lug portion; 13. Notch structure; 14. Arc structure; 15. Wire outlet hole; 2. LED chips; 3. Packaging glue; 4. Insulation dam; 5. Car logo. DETAILED DESCRIPTION

[0018] The present application is further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail. They can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0019] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various implementations, and the operational steps involved in each embodiment may be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for the purpose of clearly describing a particular embodiment and do not imply a required composition and / or sequence.

[0020] Component numbers used herein, such as "first" and "second," are used solely to distinguish the components being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" in this application, unless otherwise specified, include both direct and indirect connections (couplings).

[0021] The circuit substrate of the mounted vehicle logo light source in the present invention includes a main body part and a convex piece part. An LED chip is arranged on the main body part so that the mounted vehicle logo light source can emit light. The convex piece part is arranged at the edge of the main body part, and a notch structure is provided between two adjacent convex piece parts. Combined with the convex piece part being a flexible structure, the convex piece part can be deformed relative to the main body part. In this way, when the mounted vehicle logo light source is mounted on the corresponding vehicle logo, the main body part fits with the vehicle logo. At the same time, the convex piece part is bent and deformed relative to the main body part, so that the circuit substrate as a whole can adapt to the curved surface of the vehicle logo, ensuring that the circuit substrate and the vehicle logo have a large fitting area, thereby realizing stable and reliable mounting of the mounted vehicle logo light source on the vehicle logo.

[0022] Embodiments of the mountable vehicle logo light source of the present invention: In one embodiment, the mounted car logo light source is a COB light source, please refer to Figure 1, comprising a circuit substrate 1 and a plurality of LED chips 2 disposed on the circuit substrate 1. The LED chips 2 include, but are not limited to, blue light chips, white light chips, and RGB combinations. The surface-mounted vehicle logo light source is used to be mounted on a corresponding vehicle logo 5 to illuminate the vehicle logo 5. In this embodiment, the corresponding vehicle logo 5 is a Toyota logo. In other embodiments, the shape of the surface-mounted vehicle logo light source can correspond to the shape of other vehicle logos 5.

[0023] For the shape of the circuit board 1, please refer to Figure 2 and Figure 3 The circuit substrate 1 includes a main body portion 11. The main body portion 11 has a shape corresponding to the vehicle logo 5. One side of the main body portion 11 is a chip mounting surface for setting the LED chip 2. The main body portion 11 has a circuit, and the circuit is conductively connected to the LED chip 2 to realize the power-on and light-emitting of the LED chip 2. The side of the main body portion 11 facing away from the chip mounting surface is the main body pasting surface. The main body pasting surface is a flat structure with an adhesive layer on the main body pasting surface, so that the main body portion 11 can be pasted and fixed on the corresponding vehicle logo 5. It should be noted here that the main body pasting surface is a surface of the main body portion 11, which does not have glue itself. The adhesive layer is a layer of glue set on the main body pasting surface.

[0024] Considering that the vehicle logo 5 is a three-dimensional structure with a curved surface, to ensure a sufficiently large bonding area between the circuit substrate 1 and the vehicle logo 5, the circuit substrate 1 also includes a tab portion 12 located at the edge of the main body portion 11. The tab portion 12 is a sheet-like structure, and multiple tab portions 12 are arranged along the edge of the main body portion 11. A notch structure 13 is defined between adjacent tab portions 12, thereby ensuring relative independence between the tab portions 12. Furthermore, the tab portion 12 is a flexible structure. This flexibility is intended to ensure that when the surface-mounted vehicle logo light source is attached to the corresponding vehicle logo 5, the tab portion 12 can deform relative to the main body portion 11 toward the corresponding vehicle logo 5, with this deformation direction also being the direction away from the side where the LED chip 2 is located.

[0025] Similar to the main body 11, the tab portion 12 has a tab adhesive surface. The tab adhesive surface is a surface of the tab portion 12 that does not have any adhesive itself. By providing an adhesive layer on the tab adhesive surface, the tab portion 12 can be attached to the vehicle logo 5. The tab adhesive surface and the main body adhesive surface are located on the same side of the circuit substrate 1, that is, the side facing away from the side where the LED chip 2 is located. In this way, when attaching the surface-mounted vehicle logo light source to the corresponding vehicle logo 5, please refer to Figure 4The main body 11 is bonded to the car logo 5 through the adhesive layer on the main body adhesive surface. At the same time, with respect to the curved surface structure of the car logo 5, each convex portion 12 is pressed to bend and bonded to the car logo 5. That is, the circuit substrate 1 as a whole has the ability to deform and can adapt to the curved surface structure of the car logo 5, thereby achieving the adhesion of the circuit substrate 1 to the curved surface structure of the car logo 5, ensuring the mounting area, and increasing the bonding force between the mounted car logo light source and the car logo 5. In addition, the notch structure 13 can reduce the internal stress of the curved surface bending, enhance the fit between the convex portion 12 and the car logo 5, and enhance the overall heat dissipation capacity.

[0026] In order to allow wires to pass through, the circuit substrate 1 is further provided with a wire outlet hole 15 on the main body 11 .

[0027] In one embodiment, please refer to Figure 3 Adjacent tab portions 12 are transitioned through arcuate structures 14, creating a smooth curved connection between adjacent tab portions 12. This increases the strength of the notch structures 13 of the circuit substrate 1 and reduces the risk of stress-induced cracking of the circuit substrate 1. Furthermore, in one embodiment, the tab portions 12 have an arc-shaped profile. Combined with the provision of arcuate structures 14, the arcs are connected in an arc-shaped manner, thereby increasing the structural strength of the circuit substrate 1.

[0028] For the contour shape of the tab portion 12, in other embodiments, please refer to Figure 5 and Figure 6 The outline shape of the convex portion 12 is rectangular or triangular. Of course, under the premise of meeting the use requirements, the shape of the convex portion 12 can also be a combination of multiple shapes, such as the outline shape of some convex portions 12 is an arc shape, the outline shape of some convex portions 12 is a rectangle, and the outline shape of some convex portions 12 is a triangle. Of course, the shape of the convex portion 12 is not limited to Figure 2 、 Figure 5 and Figure 6 In the structure shown, in other embodiments, the profile of the protruding piece portion 12 may also be other shapes, such as a trapezoid, provided that the use requirements are met.

[0029] In some embodiments, a copper foil layer is provided on the convex portion 12. Copper has excellent lateral thermal conductivity and can quickly conduct the heat of the LED chip 2 to the convex portion 12, thereby directing it to a wider heat dissipation area and reducing the heat and temperature of the functional area.

[0030] In one embodiment, please refer to Figure 2 、 Figure 5 and Figure 6The main body 11 has a strip-shaped portion with tabs 12 on either side of the strip's width, ensuring a sufficiently large bonding area between the circuit substrate 1 and the vehicle logo 5. Furthermore, the tabs 12 on the inner edges of the strip are smaller than those on the outer edges to prevent overlap during mounting. The dimension between the chip mounting surface of the strip and the main body's mounting surface is the thickness dimension, and the width of the strip referred to here refers to the dimension perpendicular to the edge.

[0031] In one embodiment, both the main portion 11 and the tab portion 12 of the circuit substrate 1 are flexible structures. In this case, the circuit substrate 1 is a wholly deformable flexible circuit substrate. The main portion 11 and the tab portion 12 can be integrally formed, and the circuit substrate 1 can be an FPC substrate. In other embodiments, only the tab portion 12 can be a deformable flexible structure.

[0032] For the specific structure of the mounted car logo light source, such as Figure 1 As shown, each LED chip 2 is encapsulated on the circuit substrate 1 by encapsulating glue 3. The encapsulating glue 3 is not a thixotropic molding material, but a high-reliability sealing silicone glue with good fluidity, so that the light source structure can meet the requirements of vehicle regulations. A reflective layer is set between the encapsulating glue 3 on the side of the LED chip 2 and the circuit substrate 1 to improve the brightness and airtightness. In order to determine the area of the encapsulating glue 3 during the manufacturing stage, the mounted car logo light source also has two insulating dams 4 arranged along the width direction of the strip-shaped circuit substrate 1. The insulating dams 4 enclose the chip mounting area. The LED chip 2 is set in the chip mounting area. The encapsulating glue 3 is molded between the two insulating dams 4, that is, it is molded into the chip mounting area. The encapsulating glue 3 covers the LED chip 2 and the circuit substrate 1. The reflective layer is located in the chip mounting area and is formed by white glue. The insulating dam 4 is a wall structure, which can be a white wall, a black wall, or of course a transparent wall.

[0033] To ensure the brightness of the edge of the mounted car logo light source and prevent or reduce the dark area on the edge, in one embodiment, please refer to Figure 7 The LED chips 2 are long strips, and the ends of the length directions of the LED chips 2 are arranged toward the edge of the main body 11, that is, the length directions of the LED chips 2 are arranged perpendicularly to the edge of the main body 11 on the chip mounting surface, and are evenly distributed according to the size of the space, so that the light-emitting space distribution is more uniform, the light intensity on both sides is enhanced, and there are no obvious dark areas on both sides.

[0034] Take Toyota logo-shaped sticker-mounted car logo light source as an example, please refer to Figure 7The main body 11 includes multiple intersecting strip-shaped portions, one of which is designated as a first strip-shaped portion 111 and the other as a second strip-shaped portion 112. LED chips 2 are arranged at the intersection. Due to the large area of the intersection, multiple LED chips 2 are arranged at the intersection. Some of the LED chips 2 have their ends in the longitudinal direction facing the edges of the first strip-shaped portion 111, while others have their ends in the longitudinal direction facing the edges of the second strip-shaped portion 112. The "ends in the longitudinal direction of the LED chips 2 facing the edges of the first strip-shaped portion 111" mentioned here means that, although there is no clear edge of the first strip-shaped portion 111 at the intersection, the edges of the first strip-shaped portion 111 are extended to the intersection area according to the extension trend of the edges of the first strip-shaped portion 111, and the ends in the longitudinal direction of the LED chips 2 point to the edges extended to the intersection area. The same is true for the ends in the longitudinal direction of the LED chips 2 facing the edges of the second strip-shaped portion 112.

[0035] The present invention further provides a surface-mounted vehicle logo light source circuit substrate, which has the same structure as the circuit substrate 1 in each embodiment of the surface-mounted vehicle logo light source, and will not be described in detail here.

[0036] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art can make several simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. A surface-mounted vehicle logo light source circuit substrate, characterized in that: include: The main body has a shape corresponding to the vehicle logo, one side of the main body is a chip mounting surface for arranging an LED chip, and the side of the main body opposite to the chip mounting surface is a main body adhesive surface for adhering to the vehicle logo, and the main body adhesive surface is a planar structure; a circuit, wherein the circuit is at least partially distributed on the main body portion and is configured to be electrically connected to the LED chip; and a tab portion, which is a sheet-like structure and is located at the edge of the main body portion, wherein a plurality of tab portions are arranged along the edge, and a notch structure is formed between two adjacent tab portions, and the tab portion has a tab pasting surface for pasting the vehicle logo; The convex piece pasting surface and the main body pasting surface are located on the same side of the mounted vehicle logo light source circuit substrate, and at least the convex piece part is a flexible structure, so that each convex piece part can be bent relative to the main body part in the direction away from the chip mounting surface.

2. The surface-mounted vehicle logo light source circuit substrate according to claim 1, wherein: Two adjacent protruding pieces are transitioned through an arc structure.

3. The surface-mounted vehicle logo light source circuit substrate according to claim 1 or 2, characterized in that: The outline of the protruding piece portion is one or at least two of the following: arc shape, rectangle shape, and triangle shape.

4. The surface-mounted vehicle logo light source circuit substrate according to claim 1 or 2, wherein: The convex portion is provided with a copper foil layer.

5. The surface-mounted vehicle logo light source circuit substrate according to claim 1 or 2, characterized in that: The main body portion includes a strip-shaped portion, the edges on both sides of the width of the strip-shaped portion each have the convex portion, and both the main body portion and the convex portion are flexible structures.

6. A mounted vehicle logo light source, characterized in that: include: The circuit substrate is the surface-mounted vehicle logo light source circuit substrate according to any one of claims 1 to 5; LED chips are distributed on the circuit substrate; and an adhesive layer, which is located on the main body adhesive surface and the convex piece adhesive surface and is used for being adhered to the vehicle logo.

7. The surface-mounted vehicle logo light source according to claim 6, wherein: The surface-mounted vehicle logo light source packages the LED chip on the circuit substrate through packaging glue, and a reflective layer is provided between the packaging glue and the circuit substrate at least on the side of the LED chip.

8. The surface-mounted vehicle logo light source according to claim 7, characterized in that: The main body is provided with an insulating dam, the insulating dam encloses a chip mounting area, the LED chip is arranged in the chip mounting area, the packaging glue fills the chip mounting area, and the reflective layer is located in the chip mounting area.

9. The surface-mounted vehicle logo light source according to any one of claims 6 to 8, characterized in that: The LED chips are in the shape of long strips, and the ends of the lengthwise directions of the LED chips are arranged toward the edges of the main body.

10. The surface-mounted vehicle logo light source according to claim 9, wherein: The main body portion 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, and the LED chips are arranged at the intersection. Among the LED chips arranged at the intersection, both ends of the length direction of some of the LED chips are facing the edges of the first strip-shaped portion, and both ends of the length direction of some of the LED chips are facing the edges of the second strip-shaped portion.

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