Frame structure of backlight module

Abstract

The utility model provides a frame structure of a backlight module, and belongs to the technical field of backlight modules. Comprising a frame body, a cavity is formed in the frame body, the cavity is filled with a reflecting film, a shading film is arranged on one side of the reflecting film, the width value of the shading film is smaller than that of the reflecting film, a limiting protrusion is arranged at the top of the frame body, and a square limiting groove is formed in the limiting protrusion. A guide face is arranged on the contact face of the limiting protrusion and the limiting groove, and the top of the frame body is used for installing a glass screen. According to the utility model, by arranging the limiting bulge at the top of the frame main body and arranging the limiting groove and the guide surface in the limiting bulge, accurate positioning and guiding are provided for the installation of the glass screen, the installation steps are greatly simplified, the use of required tools is reduced, the installation accuracy is improved, and the production cost is reduced. And tight fitting and accurate butt joint between the glass screen and the backlight module are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of backlight modules, and particularly relates to a frame structure of a backlight module. Background Art

[0002] The main light source of the backlight module provides the brightness required for backlighting. LED lamps have the advantages of high efficiency, long life, and low power consumption, and are the most commonly used light sources in current backlight modules.

[0003] However, in the process of using the existing frame structure of the backlight module, since the existing frame structure requires complex steps and tools for installing the glass screen and the circuit board, and it is difficult to ensure the installation accuracy, and the internal wiring of the backlight module is messy, which not only affects the appearance but also may increase the risk of failure. At the same time, the frame structure needs to be assembled with multiple components, resulting in low stability of the frame structure.

[0004] Therefore, the utility model provides a frame structure of a backlight module to meet the requirements. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides the following technical solutions:

[0006] A frame structure of a backlight module includes a frame body. A cavity is formed inside the frame body, a reflective film is filled inside the cavity, a light-shielding film is arranged on one side of the reflective film, and the width value of the light-shielding film is smaller than the width value of the reflective film.

[0007] Optionally, a limiting protrusion is arranged on the top of the frame body. A square limiting groove is arranged inside the limiting protrusion, and a guiding surface is arranged on the contact surface between the limiting protrusion and the limiting groove. The top of the frame body is used for installing the glass screen.

[0008] Optionally, a square wire slot is formed on one side of the limiting protrusion.

[0009] Optionally, a positioning frame is arranged at the bottom of the frame body. A limiting cavity is arranged inside the positioning frame. Screw holes are formed at two opposite right-angle positions of the positioning frame. Positioning corners are arranged at the other two right-angle positions of the positioning frame. A positioning post is arranged on the top of the positioning frame. The bottom of the frame body is used for installing the circuit board.

[0010] Optionally, a PCB connecting piece is welded on one side of the positioning frame, and the width value of the PCB connecting piece is 2 mm.

[0011] Optionally, the frame body is an integrally formed structure, and the material of the frame body is acrylic board.

[0012] Compared with the prior art, the utility model has at least the following beneficial effects:

[0013] In the above solution, by setting the limit protrusion at the top of the frame body and the limit groove and guiding surface inside it, precise positioning and guiding are provided for the installation of the glass screen, greatly simplifying the installation steps, reducing the use of required tools, improving the installation accuracy at the same time, and ensuring the close fit and accurate docking between the glass screen and the backlight module.

[0014] In the above solution, a wire slot is opened on one side of the limit protrusion, providing a dedicated channel and fixed position for the wire arrangement of the circuit board, effectively solving the problem of chaotic wire arrangement inside the existing backlight module, keeping the inside of the backlight module clean and beautiful, and also helping to reduce the failure risk caused by wire chaos.

[0015] In the above solution, the frame body adopts an integrally formed structure. Compared with the traditional design of assembling multiple components, the integrally formed structure has higher stability and strength, can better resist the impact and deformation of external forces, and extends the service life of the backlight module.

[0016] In the above solution, acrylic board is selected as the material of the frame body. Acrylic board has good weather resistance, corrosion resistance and processing performance, can adapt to different working environments and usage requirements, and has high transparency and gloss, which helps to improve the display effect of the backlight module.

[0017] In the above solution, a cavity is opened inside the frame body and filled with a reflective film. The reflective film can effectively reflect light, reduce light loss, and improve the utilization efficiency of light. At the same time, the setting of the light-shielding film further enhances the light control ability, making the backlight more uniform and bright. Description of the Drawings

[0018] Figure 1 It is a top view of the frame structure of a backlight module;

[0019] Figure 2 It is a bottom view of the frame structure;

[0020] Figure 3 It is a side view of the frame structure.

[0021] [Reference Signs]

[0022] 1. Frame body; 101. Cavity; 102. Reflective film; 2. Light-shielding film; 3. Limit protrusion; 301. Guiding surface; 302. Limit groove; 4. Wire slot; 5. Screw hole; 6. Positioning frame; 601. Limit cavity; 7. PCB connecting piece; 8. Positioning post. Detailed Embodiment

[0023] The following will describe in detail a frame structure of a backlight module provided by the present utility model in conjunction with the accompanying drawings and specific embodiments; at the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods.

[0024] As Figures 1 to 3 shown, an embodiment of the present utility model provides a frame structure of a backlight module, including a frame body 1. A cavity 101 is provided inside the frame body 1, and a reflective film 102 is filled inside the cavity 101. A light-shielding film 2 is provided on one side of the reflective film 10--2, and the width value of the light-shielding film 2 is less than the width value of the reflective film 102. When light emitted by a light source such as an LED enters the backlight module, the reflective film 102 will effectively reflect the light, causing the light to refract and reflect multiple times inside the cavity 101, thereby increasing the propagation path and coverage range of the light. This design helps to improve the utilization rate of light, making the backlight more uniform. The light-shielding film 2 plays a role in adjusting the light. By controlling the width and position of the light-shielding film 2, the light distribution can be further adjusted, reducing unnecessary light leakage and glare, and improving the display effect. The combined use of the reflective film 102 and the light-shielding film 2 can precisely control the propagation direction and range of the light, ensuring that the light can propagate along the predetermined path and direction. At the same time, the reflective film 102 can also diffuse the light to a wider area, enabling the backlight module to cover a larger display area, improving the overall brightness and uniformity. The frame body 1, as the basic structure of the entire backlight module, not only provides a stable support for the reflective film 102 and the light-shielding film 2, but also provides the necessary space for the propagation and reflection of light through the cavity 101 design inside it. The integrally formed structure of the frame body 1 enhances its overall stability and durability, and can resist external impacts and deformations, ensuring the stability and reliability of the backlight module during long-term use. Through the reflection of the reflective film 102, the utilization rate of light can be significantly improved, reducing light loss and making the backlight brighter and more uniform. The adjustment of the light-shielding film 2 can reduce the phenomena of light leakage and glare, improving the clarity and contrast of the display effect. At the same time, the diffusion effect of the reflective film 102 can ensure that the light evenly covers the entire display area, improving the overall brightness and color saturation of the picture. The integrally formed structure and modular design of the frame body 1 make the installation and maintenance of the backlight module simpler and faster. The connection between each component is tight, stable and reliable, reducing the errors and faults that may occur during the installation process. The integrally formed structure of the frame body 1 improves the overall strength and stability of the backlight module, can resist external impacts and deformations, and extends the service life of the product.

[0025] As Figures 1 to 3As shown, a limiting protrusion 3 is provided at the top of the frame body 1. A square limiting groove 302 is provided inside the limiting protrusion 3, and a guiding surface 301 is provided on the contact surface between the limiting protrusion 3 and the limiting groove 302. The top of the frame body 1 is used for the installation of the glass screen. A square wire discharge groove 4 is opened on one side of the limiting protrusion 3. The square limiting groove 302 provided inside the limiting protrusion 3 provides an accurate positioning reference for the installation of the glass screen. The frame body 1 is an integrally formed structure, and the material of the frame body 1 is acrylic board. When the glass screen is placed on the top of the frame body 1, its edge or specific part will naturally fall into the limiting groove 302, ensuring the accurate alignment between the glass screen and the backlight module. The guiding surface 301 provided on the contact surface between the limiting protrusion 3 and the limiting groove 302 plays a role in guiding the glass screen to smoothly enter the limiting groove 302. This design reduces the resistance and error during the installation process, improves the installation efficiency. The square wire discharge groove 4 opened on one side of the limiting protrusion 3 provides a dedicated channel and a fixed position for the wiring inside the backlight module. After the glass screen is installed, the wiring can be orderly arranged and fixed along the wire discharge groove 4, avoiding the chaos and mutual interference of the wiring, and at the same time reducing the risk of failure caused by improper wiring. The design of the limiting protrusion 3 and its limiting groove 302 ensures the accurate alignment of the glass screen during the installation process, reduces the installation error, and improves the installation accuracy. This helps to ensure the tight fit and good cooperation between the backlight module and the glass screen, thereby improving the overall display effect. The setting of the guiding surface 301 makes the installation process of the glass screen smoother and simpler, reducing the installation difficulty and the required time. At the same time, the provision of the wire discharge groove 4 also facilitates the arrangement and fixation of the wiring, further simplifying the installation steps. The limiting protrusion 3, as an important part of the top of the frame body 1, not only plays a role in positioning and guiding, but also enhances the structural stability of the entire backlight module through its structural design. When the glass screen is firmly installed in the limiting groove 302, it forms a stable overall structure with the backlight module, helping to resist external impacts and vibrations.

[0026] As Figures 1 to 3As shown, a positioning frame 6 is provided at the bottom of the frame body 1. A limiting groove 302 is provided inside the positioning frame 6. Screw holes 5 are opened inside two opposite right-angled corners of the positioning frame 6. Positioning corners are provided at the other two right-angled corners of the positioning frame 6. A positioning post 8 is provided at the top of the positioning frame 6. The bottom of the frame body 1 is for the installation of the circuit board. The limiting groove 302 provided inside the positioning frame 6 provides an accurate positioning reference for the installation of the circuit board. When the circuit board is placed at the bottom of the frame body 1, its edge or specific part will naturally fall into the limiting cavity 601, ensuring the accurate alignment between the circuit board and the backlight module. The positioning post 8 at the top of the positioning frame 6 may further cooperate with the corresponding holes or structures on the circuit board to realize the positioning and fixing of the circuit board in the vertical direction. The screw holes 5 opened inside two opposite right-angled corners of the positioning frame 6 are used to install screws to firmly fix the positioning frame 6 (and the circuit board inside it) on the frame body 1. This screw fastening method provides a reliable mechanical connection, ensuring that the circuit board will not loosen or fall off during use. The positioning corners provided at the other two right-angled corners of the positioning frame 6 may play an additional fixing and supporting role. They can cooperate with the frame body 1 or other components to enhance the overall stability and firmness of the positioning frame 6. Through the design of the limiting cavity 601 and the positioning post 8, the circuit board can achieve accurate alignment and fixing during the installation process, reducing the installation error and improving the installation accuracy. This helps to ensure good contact and signal transmission between the circuit board and the backlight module. The positioning frame 6 and its screw fastening, positioning corner and other designs together constitute a stable support structure for the installation of the circuit board. This structure can not only resist the influence of external impact and vibration on the circuit board, but also ensure that the circuit board maintains a stable working state during use. The screw fastening design makes the installation and disassembly process of the circuit board simple and fast. When maintenance or replacement of the circuit board is required, simply unscrew the screws to easily remove the circuit board, reducing the maintenance cost and time cost.

[0027] As Figures 1 to 3As shown, a PCB connecting piece 7 is welded to one side of the positioning frame 6. The width value of the PCB connecting piece 7 is 2 mm. The PCB connecting piece 7 serves as a bridge between the printed circuit board (PCB) and an external power supply or other circuit components, enabling the transmission of electrical signals. When the backlight module is working, current and signals are transmitted from the external circuit to the corresponding components on the circuit board through the PCB connecting piece 7, thereby driving the backlight module to work properly. The PCB connecting piece 7 is tightly connected to the positioning frame 6 and the circuit board by welding, forming a stable mechanical connection. This connection method not only ensures the reliable transmission of electrical signals but also enhances the structural stability of the entire backlight module. The width value of the PCB connecting piece 7 is 2 mm, which is a carefully designed dimension. The size of the width directly affects the load-bearing capacity and electrical performance of the connecting piece. A wider connecting piece can carry larger currents and signals, while reducing resistance and heat generation, improving the stability and efficiency of the electrical connection. However, an overly wide connecting piece will also increase costs and occupy more space. Therefore, a width of 2 mm is a suitable choice that strikes a balance between performance and cost. The precise welding and appropriate width design of the PCB connecting piece 7 ensure the fast and accurate transmission of electrical signals, reduce signal attenuation and interference, and improve the electrical performance of the backlight module. The stable connection between the PCB connecting piece 7 and the positioning frame 6 and the circuit board enhances the structural stability of the entire backlight module, helps to resist the impact of external shocks and vibrations on the backlight module, and extends its service life. The width design of 2 mm takes into account cost-effectiveness while ensuring electrical performance and structural stability. The moderate width neither causes material waste nor reduces the load-bearing capacity and electrical performance of the connecting piece due to being too narrow.

[0028] Working principle provided by the present utility model: When the glass screen is placed on the top of the frame body 1, its edge or specific part will naturally fall into the limit groove 302, ensuring the accurate alignment between the glass screen and the backlight module. The guiding surface 301 provided on the contact surface between the limit protrusion 3 and the limit groove 302 plays a role in guiding the glass screen to smoothly enter the limit groove 302. This design reduces the resistance and error during the installation process, improves the installation efficiency. The square wire slot 4 opened on one side of the limit protrusion 3 provides a dedicated channel and fixed position for the wiring harness inside the backlight module. After the glass screen is installed, the wiring harness can be orderly arranged and fixed along the wire slot 4, avoiding the chaos and mutual interference of the wiring harness, and at the same time reducing the risk of failures that may be caused by improper wiring. The design of the limit protrusion 3 and its limit groove 302 ensures the accurate alignment of the glass screen during the installation process, reduces the installation error, and improves the installation accuracy. This helps to ensure the close fit and good cooperation between the backlight module and the glass screen, thereby enhancing the overall display effect. The setting of the guiding surface 301 makes the installation process of the glass screen smoother and simpler, reducing the installation difficulty and the required time. When the circuit board is placed on the bottom of the frame body 1, its edge or specific part will naturally fall into the limit groove 302, ensuring the accurate alignment between the circuit board and the backlight module. The positioning posts 8 on the top of the positioning frame 6 may further cooperate with the corresponding holes or structures on the circuit board to achieve the positioning and fixation of the circuit board in the vertical direction. The screw holes 5 opened inside the two relatively arranged right angles of the positioning frame 6 are used to install screws to firmly fix the positioning frame 6 (and the circuit board inside it) on the frame body 1. This screw fastening method provides a reliable mechanical connection, ensuring that the circuit board will not loosen or fall off during use. The positioning angles provided at the other two right angles of the positioning frame 6 may play an additional role in fixation and support. They can cooperate with the frame body 1 or other components to enhance the overall stability and firmness of the positioning frame 6. Through the design of the limit groove 302 and the positioning posts 8, the circuit board can achieve accurate alignment and fixation during the installation process, reducing the installation error and improving the installation accuracy.

[0029] The present utility model covers any substitutions, modifications, equivalent methods, and solutions made within the essence and scope of the present utility model; for the public to have a thorough understanding of the present utility model, specific details are described in detail in the above preferred embodiments of the present utility model, but those skilled in the art can fully understand the present utility model without the description of these details.

[0030] The above description is only the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A frame structure of a backlight module, comprising a frame body (1), characterized in that, A cavity (101) is provided inside the frame body (1), a reflective film (102) is filled inside the cavity (101), a light-shielding film (2) is provided on one side of the reflective film (102), and the width value of the light-shielding film (2) is smaller than the width value of the reflective film (102).

2. The frame structure of a backlight module according to claim 1, characterized in that, A limiting protrusion (3) is provided at the top of the frame body (1), a square limiting groove (302) is provided inside the limiting protrusion (3), and a guiding surface (301) is provided on the contact surface between the limiting protrusion (3) and the limiting groove (302). The top of the frame body (1) is used for the installation of a glass screen.

3. The frame structure of a backlight module according to claim 2, characterized in that, A square wire discharge groove (4) is provided on one side of the limiting protrusion (3).

4. A frame structure of a backlight module according to claim 2, wherein, A positioning frame (6) is provided at the bottom of the frame body (1), a limiting cavity (601) is provided inside the positioning frame (6), screw holes (5) are provided inside two opposite right angles of the positioning frame (6), positioning angles are provided at the other two right angles of the positioning frame (6), a positioning post (8) is provided at the top of the positioning frame (6), and the bottom of the frame body (1) is used for the installation of a circuit board.

5. The frame structure of a backlight module according to claim 4, characterized in that, A PCB connecting piece (7) is welded on one side of the positioning frame (6), and the width value of the PCB connecting piece (7) is 2 mm.

6. The frame structure of a backlight module according to claim 1, wherein The frame body (1) is an integrally injection-molded structure, and the material of the frame body (1) is acrylic board.

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