Membrane positioning structure of light-emitting diode (LED) backlight module

Abstract

The utility model relates to the technical field of backlight modules, in particular to an LED backlight module membrane positioning structure which comprises a rubber frame and a membrane assembly, first positioning grooves are formed in the four corners of the upper end of the rubber frame, L-shaped clamping blocks are fixedly connected into the four first positioning grooves, second positioning grooves are formed in the left inner wall and the right inner wall of the rubber frame, and the L-shaped clamping blocks are fixedly connected into the second positioning grooves. The diaphragm assembly is fixedly clamped in the rubber frame through the first positioning groove and the second positioning groove; the diaphragm assembly comprises a diaphragm body, positioning blocks matched with the first positioning grooves are fixedly connected to the four corners of the diaphragm body, and positioning assemblies used in cooperation with the second positioning grooves are fixedly installed at the left end and the right end of the diaphragm body. According to the membrane positioning structure of the LED backlight module, through a dual positioning mechanism of four corners and side edges, it is ensured that the membrane assembly is accurately positioned in the rubber frame, uneven display caused by deviation or vibration of the membrane is avoided, the display effect of the backlight module is improved, and meanwhile the membrane assembly is easy and fast to install and convenient to maintain and replace.

Description

Technical Field

[0001] The utility model relates to the technical field of backlight modules, and particularly relates to a film positioning structure for an LED backlight module. Background Art

[0002] In the prior art, the positioning of the film component of the LED backlight module mostly relies on a simple fixing device, which often leads to inaccurate positioning of the film in the glue frame. Especially during long-term use or when encountering external vibration, the film is prone to displacement, causing uneven display effects, seriously affecting the display quality and the visual experience of users. In addition, the traditional positioning structure is complex and time-consuming during the assembly process, not only reducing the production efficiency but also increasing the manufacturing cost. More importantly, when it is necessary to maintain or replace the film component, the limitations of the prior art make this process difficult, restricting the maintainability and market competitiveness of the product. Therefore, we propose a film positioning structure for an LED backlight module. Content of the Utility Model

[0003] The main purpose of the utility model is to provide a film positioning structure for an LED backlight module, which can effectively solve the problems in the background art.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A film positioning structure for an LED backlight module, comprising a glue frame and a film component. Four corners at the upper end of the glue frame are respectively provided with first positioning grooves, and L-shaped blocks are fixedly connected in the four first positioning grooves. Second positioning grooves are arranged on the left and right inner walls of the glue frame, and the film component is fixedly clamped in the glue frame through the first positioning grooves and the second positioning grooves;

[0006] The film component includes a film main body. Positioning blocks adapted to the first positioning grooves are fixedly connected to four corners of the film main body, and positioning components cooperating with the second positioning grooves are fixedly installed at both left and right ends of the film main body.

[0007] Preferably, L-shaped blocks are fixedly connected in the four first positioning grooves, and L-shaped card slots adapted to the L-shaped blocks are arranged in the four positioning blocks. The L-shaped card slots are clamped with the L-shaped blocks to fixedly install the positioning blocks in the first positioning grooves.

[0008] By adopting the above technical solution: The cooperation of the positioning blocks and the first positioning grooves forms a stable four-corner positioning to prevent the film main body from moving in the vertical direction.

[0009] Preferably, the positioning component includes a connecting block, the connecting block is fixedly connected to the diaphragm body, two anti - detachment chutes are arranged in the connecting block, two anti - detachment blocks are slidably connected to the connecting block through the anti - detachment chutes, and a spring is fixedly connected between the two anti - detachment blocks.

[0010] By adopting the above - mentioned technical solution: The use of the spring provides good shock - resistance performance. Even when encountering vibrations during transportation or use, it can keep the position of the diaphragm stable, extending the service life of the backlight module.

[0011] Preferably, guide grooves are arranged on both the left and right sides of the upper end of the connecting block. Guide posts slidably connected to the guide grooves are fixedly installed at the upper ends of the two anti - detachment blocks. A buckle groove is arranged at the upper end of the guide post. Two sliders used in cooperation with the anti - detachment chute are arranged at one end of the anti - detachment block close to the inner wall of the connecting block, and the width of the slider is smaller than the width of the anti - detachment block.

[0012] By adopting the above - mentioned technical solution: The slider can slide in the anti - detachment chute to ensure the stable movement of the anti - detachment block.

[0013] Preferably, the second positioning groove includes a connecting groove, the width of the connecting groove is adapted to the width of the connecting block, a fixing groove is integrally formed on the inner wall of the connecting groove, and the width of the fixing groove is greater than the width of the connecting groove.

[0014] By adopting the above - mentioned technical solution: When the connecting block enters the connecting groove, the anti - detachment block is squeezed and contracts inward. When the end face of the anti - detachment block slides past the edge of the fixing groove, the elastic force of the spring is used to push the anti - detachment block to expand outward and snap into the connecting groove, completing the side positioning.

[0015] Preferably, the diaphragm body includes a light - guiding diaphragm, a reflective diaphragm is arranged at the upper end of the light - guiding diaphragm, an optical diaphragm is arranged at the lower end of the light - guiding diaphragm, and the sum of the height dimensions of the reflective diaphragm, the light - guiding diaphragm and the optical diaphragm is equal to the height dimension inside the rubber frame.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. Through the dual - positioning mechanism at the four corners and the sides, it ensures the precise positioning of the diaphragm assembly in the rubber frame, avoids display unevenness caused by diaphragm offset or vibration, and improves the display effect of the backlight module.

[0018] 2. The cooperation of the L - shaped clamping block and the L - shaped clamping groove and the elastic snap - fit design of the positioning component make the installation of the diaphragm assembly simple and fast, without the need for additional tools, reducing the assembly time and cost, facilitating the maintenance and replacement of the diaphragm assembly, and improving the maintainability and economy of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a film positioning structure of an LED backlight module of the present utility model;

[0020] Figure 2 It is a schematic diagram of the component structure of a film positioning structure of an LED backlight module of the present utility model;

[0021] Figure 3 It is a schematic diagram of the structure of a positioning component of a film positioning structure of an LED backlight module of the present utility model;

[0022] Figure 4 It is a schematic diagram of the component structure of a film main body of a film positioning structure of an LED backlight module of the present utility model.

[0023] In the figure: 1, glue frame; 2, film assembly; 11, first positioning groove; 12, L-shaped clamping block; 13, second positioning groove; 131, connecting groove; 132, fixing groove; 21, film main body; 211, reflective film; 212, light guide film; 213, optical film; 22, positioning block; 221, L-shaped clamping groove; 23, positioning component; 231, connecting block; 232, anti-detachment sliding groove; 233, anti-detachment block; 234, spring; 235, guide groove; 236, guide post; 237, buckling groove; 238, slider. Specific embodiments

[0024] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0026] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0028] An LED backlight module film positioning structure, including a glue frame 1 and a film component 2. At the four corners of the upper end of the glue frame 1, there are first positioning grooves 11. In each of the four first positioning grooves 11, there is a fixed L-shaped block 12. On the left and right inner walls of the glue frame 1, there are second positioning grooves 13. The film component 2 is fixedly clamped in the glue frame 1 through the first positioning grooves 11 and the second positioning grooves 13. The film main body 21 includes a light guide film 212. On the upper end of the light guide film 212, there is a reflective film 211. On the lower end of the light guide film 212, there is an optical film 213. And the sum of the height dimensions of the reflective film 211, the light guide film 212 and the optical film 213 is equal to the height dimension inside the glue frame 1.

[0029] In this embodiment, the film component 2 includes a film main body 21. At the four corners of the film main body 21, there are fixedly connected positioning blocks 22 adapted to the first positioning grooves 11. At the left and right ends of the film main body 21, there are fixedly installed positioning components 23 cooperating with the second positioning grooves 13. In each of the four first positioning grooves 11, there is a fixed L-shaped block 12. In each of the four positioning blocks 22, there is an L-shaped slot 221 adapted to the L-shaped block 12. The L-shaped slot 221 is clamped with the L-shaped block 12 to fixedly install the positioning block 22 in the first positioning groove 11.

[0030] Through the above solution: at the four corners of the film main body 21, there are positioning blocks 22. In the positioning blocks 22, there are L-shaped slots 221, which match the L-shaped blocks 12 in the first positioning grooves 11 on the glue frame 1. When the film main body 21 is placed into the glue frame 1, the L-shaped blocks 12 will snap into the L-shaped slots 221 on the positioning blocks 22, forming a stable four-corner positioning to prevent the film main body 21 from moving in the vertical direction.

[0031] In this embodiment, the positioning component 23 includes a connecting block 231. The connecting block 231 is fixedly connected to the diaphragm body 21. Two anti - detachment sliding grooves 232 are provided in the connecting block 231. Two anti - detachment blocks 233 are slidably connected in the connecting block 231 through the anti - detachment sliding grooves 232. A spring 234 is fixedly connected between the two anti - detachment blocks 233. Guide grooves 235 are provided on the left and right sides of the upper end of the connecting block 231. Guide posts 236 slidably connected to the guide grooves 235 are fixedly installed at the upper ends of the two anti - detachment blocks 233. A buckle groove 237 is provided at the upper end of the guide post 236. Two sliders 238 cooperating with the anti - detachment sliding grooves 232 are provided at one end of the anti - detachment block 233 close to the inner wall of the connecting block 231, and the width of the slider 238 is smaller than the width of the anti - detachment block 233. The second positioning groove 13 includes a connecting groove 131. The width of the connecting groove 131 is adapted to the width of the connecting block 231. A fixing groove 132 is integrally formed on the inner wall of the connecting groove 131. The width of the fixing groove 132 is larger than the width of the connecting groove 131.

[0032] Through the above - mentioned solution: when the diaphragm body 21 is inserted into the rubber frame 1, the connecting block 231 enters the connecting groove 131, and the anti - detachment blocks 233 are squeezed and contracted inward. When the end face of the anti - detachment block 233 slides past the edge of the fixing groove 132, then the two anti - detachment blocks 233 are received into the connecting block 231 by compressing the spring 234. The connecting block 231 penetrates through the connecting groove 131 and is placed in the fixing groove 132. At this time, the elastic force of the spring 234 is used to push the anti - detachment blocks 233 to expand outward and snap into the connecting groove 131 to complete the side positioning. The slider 238 can slide in the anti - detachment sliding groove 232 to ensure the stable movement of the anti - detachment block 233. The side of the diaphragm body 21 cooperates with the second positioning groove 13 in the rubber frame 1 through the positioning component 23 to achieve horizontal positioning.

[0033] It should be noted that the present utility model is a film positioning structure for an LED backlight module. Positioning blocks 22 are provided at the four corners of the film body 21. An L-shaped card slot 221 is provided inside the positioning block 22, which is matched with the L-shaped card block 12 in the first positioning slot 11 on the glue frame 1. When the film body 21 is placed into the glue frame 1, the L-shaped card block 12 will snap into the L-shaped card slot 221 on the positioning block 22 to form a stable four-corner positioning, preventing the film body 21 from moving in the vertical direction. When the film body 21 is inserted into the glue frame 1, the connecting block 231 enters the connecting slot 131, and the anti-disengagement block 233 is squeezed and contracts inward. When the end face of the anti-disengagement block 233 slides past the edge of the fixing slot 132, then the two anti-disengagement blocks 233 are received into the connecting block 231 by compressing the spring 234. The connecting block 231 penetrates through the connecting slot 131 and is placed in the fixing slot 132. At this time, the elastic force of the spring 234 is used to push the anti-disengagement block 233 to expand outward and snap into the connecting slot 131 to complete the side positioning. The slider 238 can slide in the anti-disengagement chute 232 to ensure the stable movement of the anti-disengagement block 233. The side of the film body 21 is matched with the second positioning slot 13 in the glue frame 1 through the positioning component 23 to achieve horizontal positioning. The dual positioning mechanism ensures the precise positioning of the film body 21 in the glue frame 1, avoids display unevenness caused by film offset or vibration, improves the display effect of the backlight module, and at the same time is convenient for disassembly and assembly, facilitating the maintenance and replacement of the film body 21, and improving the maintainability and economy of the equipment.

[0034] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A diaphragm positioning structure for an LED backlight module, comprising a plastic frame (1) and a diaphragm assembly (2), characterized in that: The four corners of the upper end of the rubber frame (1) are each provided with a first positioning groove (11), and an L-shaped clamping block (12) is fixedly connected in each of the four first positioning grooves (11). The left and right inner walls of the rubber frame (1) are each provided with a second positioning groove (13), and the diaphragm assembly (2) is fixedly clamped in the rubber frame (1) through the first positioning groove (11) and the second positioning groove (13); The diaphragm assembly (2) comprises a diaphragm body (21), the four corners of which are fixedly connected with positioning blocks (22) adapted to the first positioning groove (11), and the left and right ends of the diaphragm body (21) are fixedly mounted with positioning assemblies (23) used in conjunction with the second positioning groove (13).

2. The LED backlight module film positioning structure according to claim 1, characterized in that: The four No. 1 positioning grooves (11) are all fixedly connected with an L-shaped clamping block (12), and the four positioning blocks (22) are all provided with an L-shaped clamping groove (221) adapted to the L-shaped clamping block (12), and the L-shaped clamping groove (221) is clamped with the L-shaped clamping block (12) to fix the positioning block (22) in the No. 1 positioning groove (11).

3. The LED backlight module film positioning structure according to claim 1, characterized in that: The positioning assembly (23) comprises a connecting block (231), the connecting block (231) is fixedly connected to the diaphragm body (21), two anti-slip grooves (232) are arranged in the connecting block (231), two anti-slip blocks (233) are slidably connected in the connecting block (231) via the anti-slip grooves (232), and a spring (234) is fixedly connected between the two anti-slip blocks (233).

4. The LED backlight module film positioning structure according to claim 3, characterized in that: Guide grooves (235) are provided on both left and right sides of the upper end of the connecting block (231); guide posts (236) slidably connected to the guide grooves (235) are fixedly mounted on the upper ends of the two anti-slipping blocks (233); buckle grooves (237) are provided on the upper ends of the guide posts (236); and two sliding blocks (238) used in conjunction with the anti-slipping sliding grooves (232) are provided at one end of the anti-slipping block (233) close to the inner wall of the connecting block (231); and the width of the sliding blocks (238) is smaller than the width of the anti-slipping block (233).

5. The LED backlight module film positioning structure according to claim 1, characterized in that: The second positioning groove (13) comprises a connecting groove (131), the width of the connecting groove (131) is adapted to the width of the connecting block (231), the inner wall of the connecting groove (131) is integrally formed with a fixing groove (132), and the width of the fixing groove (132) is greater than the width of the connecting groove (131).

6. The LED backlight module film positioning structure according to claim 1, characterized in that: The film body (21) comprises a light-guiding film (212), a reflective film (211) is arranged at the upper end of the light-guiding film (212), an optical film (213) is arranged at the lower end of the light-guiding film (212), and the sum of the height dimensions of the reflective film (211), the light-guiding film (212) and the optical film (213) is equal to the height dimension inside the rubber frame (1).

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