An ultrathin light-emitting car logo lamp

Abstract

This utility model relates to the field of automotive lighting technology, and in particular to an ultra-thin luminous car logo light, comprising a PCB board, an LED light source attached to the upper surface of the PCB board, an outer cover fixedly mounted on the outer side of the upper end of the PCB board, an outer surface layer attached to the outer end of the outer cover; the interior of the outer cover is filled with adhesive, and 3M tape is adhered to the bottom surface of the PCB board. The luminous car logo light of this utility model is small in size and thin, less than 5mm, while achieving a uniform surface light emission effect. Firstly, the outer cover uses a suitable diffusion material; secondly, the LED light source uses CSP or COB technology, resulting in a small size and close spacing between adjacent LED chips; thirdly, the PCB uses a copper substrate, providing good heat dissipation and allowing it to replace the base of the lamp body for assembly with the outer cover, simplifying the structure; finally, potting compound technology is used to fix and seal the PCBA and the outer cover without increasing the additional space size.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting technology, and in particular to an ultra-thin luminous vehicle logo light. Background Technology

[0002] Ultra-thin surface-emitting car logo lights are a type of automotive lighting decorative component that combines advanced optical design and manufacturing processes. They are a sub-category of luminous car logo lights, with the core features being their "ultra-thin" physical form and "surface-emitting" visual effect. Car logo lights not only serve as a visual reinforcement element for vehicle brand identification, but also play a role in nighttime warning and aesthetic embellishment, with particular emphasis on enhancing the overall vehicle's recognizability and personalized expression.

[0003] Currently, illuminated car emblem lights used on the market are typically large in size and thickness, and are usually installed in the car's grille, headlights / rear lights, or body panels. This generally results in complex installation structures and requires significant installation space, impacting the car's exterior design. For example, the luminous device described in patent document CN217562593U, published on October 11, 2022, does not specify a minimum thickness. When a light-transmitting cover is added to meet aesthetic requirements, the patent document... Figure 3 In the schematic diagram, the thickness of the light-transmitting cover is significantly greater than that of the light-transmitting plate, and the two are fixed together using an adhesive layer, which may pose reliability issues related to environmental resistance. This solution uses a base plate layer fixed to the light-transmitting plate, and the thickness of the base plate material also increases the overall thickness of the light-emitting device. From a cross-sectional perspective, the LED's emission angle cannot adequately cover both edges of the light-transmitting plate, easily leading to uneven lighting and dark areas on both sides.

[0004] In summary, existing luminous vehicle logo lights suffer from problems such as excessive thickness, limited installation space, and uneven light emission. There is an urgent need for an ultra-thin surface luminous vehicle logo light that can solve these problems. Summary of the Invention

[0005] The purpose of this invention is to provide an ultra-thin luminous vehicle logo light. This light is small in size and thin, less than 5mm, while achieving a uniform surface light emission effect. The ultra-thin and uniform light emission effect is achieved through a special design: firstly, the outer cover uses a suitable diffusion material; secondly, the LED light source uses CSP or COB technology, resulting in a small size and close spacing between adjacent LED chips; thirdly, the PCB uses a copper substrate, providing good heat dissipation and allowing it to replace the base of the lamp body in assembly with the outer cover, simplifying the structure; finally, potting compound technology is used to fix and seal the PCBA to the outer cover without increasing the additional space size, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an ultra-thin luminous vehicle logo light, comprising a PCB board, wherein an LED light source is attached to the upper surface of the PCB board, an outer cover is fixedly installed on the outer side of the upper end of the PCB board, and an outer surface layer is attached to the outer end surface of the outer cover.

[0007] The interior of the outer cover is filled with glue, and the bottom surface of the PCB board is bonded with 3M tape.

[0008] Preferably, the interior of the outer cover contains PC or PMMA.

[0009] Preferably, the adhesive can be a two-component or one-component adhesive, epoxy resin adhesive or silicone, and can be cured at room temperature, high temperature or UV. The adhesive is required to be colorless and transparent.

[0010] Preferably, the LED light source uses CSP or COB process technology.

[0011] Preferably, the PCB board is made of copper substrate.

[0012] Preferably, the outer layer can be an IML film or an outer surface PVD.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This utility model features a small-sized and thin luminous logo light, less than 5mm thick, while achieving a uniform surface light emission effect. The ultra-thin and uniform light emission effect is achieved through a special design: firstly, the outer cover uses a suitable diffusion material; secondly, the LED light source uses CSP or COB technology, resulting in a small size and close spacing between adjacent LED chips; thirdly, the PCB uses a copper substrate, providing good heat dissipation and allowing it to replace the base of the lamp body for assembly with the outer cover, simplifying the structure; finally, potting compound technology is used to fix and seal the PCBA to the outer cover without adding any extra space. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is an overall structural view of the present invention;

[0017] Figure 2 This is a schematic diagram of the connection structure between the LED light source and the PCB board of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of a light-emitting device in the background art.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Outer cover; 2. Adhesive; 3. LED light source; 4. PCB board; 5. 3M tape; 6. Outer layer. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This utility model provides a technical solution:

[0023] Please see Figures 1 to 2 An ultra-thin luminous car logo light includes a PCB board 4, with an LED light source 3 attached to the upper surface of the PCB board 4. The LED light source 3 adopts CSP or COB technology, featuring small LED size, low thermal resistance, and high efficiency. The LED spacing of CSP technology can be as small as about 1.5mm, while the LED spacing of COB technology can be less than 1.0mm, effectively reducing the size of the logo light and improving uniformity. Its color can be white, red, blue-green, RGB, etc., without limitation. The PCB board 4 uses a copper substrate, on which the LED light source 3 and electronic components are arranged. The LED light source 3 can be arranged in different forms according to the shape of the light body; for example, the LED light source 3 can be arranged in a straight line on the surface of the PCB board 4, or it can be made into a curved line shape luminous decoration, or it can be combined into text, line patterns, and other decorative objects. When used as a strip luminous decoration, it is especially suitable as a strip car logo light.

[0024] An outer cover 1 is fixedly installed on the upper outer side of the PCB board 4. The outer cover 1 contains PC or PMMA, which are materials with diffusion effects. The outer cover 1 serves to protect the outer shell of the lamp body and also acts as an optical diffusion component. When the light emitted by the LED light source 3 passes through the outer cover 1, the light can be mixed. The setting of diffusion material can further optimize the graininess and improve the dark area at the boundary, thereby achieving a uniform lighting effect. An appearance layer 6 is attached to the outer end face of the outer cover 1. The appearance layer 6 can be an IML film or an outer surface PVD. The added IML film or PVD process can achieve different static appearance effects, such as silver, gold, etc.

[0025] The interior of the outer cover 1 is filled with adhesive 2. Adhesive 2 can be a two-component or one-component adhesive, epoxy resin or silicone, and can be cured at room temperature, high temperature or UV. Adhesive 2 is required to be colorless and transparent. Adhesive 2 is filled in the U-shaped cavity of the outer cover 1 and is bonded and fixed to the PCB board 4. The light emitted by the LED light source 3 first passes through the cured adhesive and then through the outer cover 1 to enter the human eye. Adhesive 2 can play a sealing, waterproof and moisture-proof role, protecting the components on the PCB board 4 from environmental corrosion. The bottom surface of the PCB board 4 is bonded with 3M tape 5, and the other side can be bonded to a designated area of ​​the vehicle for assembly and fixation.

[0026] The LED light source 3 uses CSP (Chip Scale Package) or COB (Chip On Board) technology. The LED is a chip-level package, which is much smaller than the traditional LED package size. It has advantages such as high optical efficiency and low thermal resistance. Therefore, the spacing between LEDs can be made as small as 1.5mm or even less than 1.0mm. The LED light source 3 is attached to the PCB board 4 to form a light-emitting component. The PCB board 4 uses a copper substrate, which has advantages such as high temperature resistance and strong heat dissipation. Adhesive 2 is filled in the gap between the outer cover 1 and the PCB board 4, wrapping the LED light source 3 and related components. After the adhesive 2 cures, it can play a sealing role and protect the circuit on the PCB board 4 from the influence of the external environment.

[0027] When powered on, the light emitted by the LED light source 3 passes through the colorless sealant 2 and enters the outer cover 1. The outer cover 1 is made of a light-diffusing material, which can disperse and diffuse the LED light evenly, ultimately achieving a uniform light emission effect. The outer cover 1 can be made according to the shape of different car logos and present the logo's luminous pattern. Moreover, the outer cover 1 can be made by adding an IML film to its surface through IML technology to achieve different static and exquisite appearance effects, such as silver and gold.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An ultra-thin luminous vehicle logo light, comprising a PCB board (4), characterized in that: An LED light source (3) is attached to the upper surface of the PCB board (4), and an outer cover (1) is fixedly installed on the outer side of the upper end of the PCB board (4). An outer layer (6) is attached to the outer surface of the outer cover (1). The interior of the outer cover (1) is filled with glue (2), and the bottom surface of the PCB board (4) is bonded with 3M tape (5).

2. The ultra-thin luminous vehicle logo light according to claim 1, characterized in that: The outer cover (1) contains PC or PMMA inside.

3. The ultra-thin luminous vehicle logo light according to claim 1, characterized in that: The adhesive (2) can be a two-component or one-component adhesive, epoxy resin adhesive or silicone, and can be cured at room temperature, high temperature or UV. The adhesive (2) is required to be colorless and transparent.

4. The ultra-thin luminous vehicle logo light according to claim 3, characterized in that: The LED light source (3) adopts CSP or COB process technology.

5. The ultra-thin luminous vehicle logo light according to claim 4, characterized in that: The PCB board (4) uses a copper substrate.

6. The ultra-thin luminous vehicle logo light according to claim 5, characterized in that: The outer layer (6) can be an IML film or an outer surface PVD.

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