Backlight module with shading mechanism

Abstract

The utility model discloses a backlight module with a shading mechanism, which belongs to the technical field of backlight modules and comprises a fixing frame, the inner wall of the fixing frame is connected with a shading layer, the top of the shading layer is connected with a positioning shaft with a hole, and the surface of the positioning shaft with the hole is provided with a backlight module body through a connecting frame plate. Assembling cylinders are connected to the two sides of the fixing frame, shading positioning mechanisms are arranged in the assembling cylinders, each shading positioning mechanism comprises a stable clamping block, one end of each stable clamping block is movably connected with a positioning shaft with a hole in an inserted mode, and a voltage stabilizing assembly for stabilizing the backlight module body is arranged in each stable clamping block; according to the utility model, the stability of the backlight module structure can be further improved, the stability of the structure is ensured, the condition of separation or deformation of module parts is reduced, the backlight module is effectively shaded, the condition of uneven brightness around a screen caused by light source leakage is prevented, and the accuracy and viewing experience of images are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of backlight modules, in particular to a backlight module with a light-shielding mechanism. Background Technique

[0002] The backlight module is one of the key components of the liquid crystal display panel. Its function is to supply sufficient brightness and a uniformly distributed light source so that it can display images normally. In order to improve the light leakage phenomenon of the backlight module and improve the display effect of the display device, the components in the currently used backlight module include a backlight module body and a light-shielding structure. The light-shielding tape used in the light-shielding structure is a closed-loop structure, which is located between the lower surface edge of the liquid crystal display panel and the rubber frame of the backlight module to play the role of bonding the liquid crystal display panel and the backlight module and also play a light-shielding role.

[0003] However, it is easy to have the situation of degumming after long-term use, which will cause the backlight modules to become loose. In the case of unstable structure or under pressure, it may also cause the components of the module to separate or deform, resulting in the leakage of the light source inside the backlight module. As a result, in a dark or dark field environment, there will be a problem of uneven brightness around the screen or other areas, which will reduce the overall quality of the display screen and affect the accuracy of the image and the viewing experience. Therefore, we need to propose a backlight module with a light-shielding mechanism. Content of the Utility Model

[0004] The purpose of the utility model is to provide a backlight module with a light-shielding mechanism, which can further improve the structural stability of the backlight module, ensure the firmness of the structure and its stability under pressure, reduce the situation of separation or deformation of the module components, effectively shield the backlight module, prevent the leakage of the light source, and avoid the situation of uneven brightness around the screen or other areas in a dark or dark field environment, and improve the accuracy of the image and the viewing experience, so as to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides: a backlight module with a light-shielding mechanism, including a fixed frame, the inner wall of the fixed frame is connected with a light-shielding layer, the top of the light-shielding layer is connected with a perforated positioning shaft, the surface of the perforated positioning shaft is assembled with a backlight module body through a connecting frame plate, and a light guide plate is connected above the backlight module body and at the top of the fixed frame; both sides of the fixed frame are connected with assembly cylinders, and a light-shielding positioning mechanism is arranged inside the assembly cylinders. The light-shielding positioning mechanism includes a stable clamping block, one end of the stable clamping block is movably inserted into the perforated positioning shaft, and a voltage stabilizing component for stabilizing the backlight module body is arranged inside the stable clamping block; a heat sink for heat dissipation is embedded at the bottom of the fixed frame.

[0006] Preferably, the light-shielding positioning mechanism includes: an adjusting rod rotatably connected to one end of the stable block, and an anti-loosening spring sleeved on the surface of the adjusting rod; wherein, one end of the adjusting rod is connected to the outside of the fixed frame, one end of the assembly cylinder is threadedly movably connected to the surface of the adjusting rod, and the stable block is slidably connected to the inner wall of the assembly cylinder.

[0007] Preferably, the voltage stabilizing component includes: a connecting plate movably connected inside the stable block, and voltage stabilizing blocks connected to both ends of the connecting plate; wherein, an installation groove is formed inside the stable block, a guiding rod is connected to the inner wall of the installation groove, and the connecting plate is slidably connected to the surface of the guiding rod.

[0008] Preferably, a compression spring is arranged inside the stable block, the bottom of the compression spring is connected to the top of the voltage stabilizing block, and the voltage stabilizing block is pressed against the top of the connecting frame plate through the compression spring.

[0009] Preferably, a side guard plate is arranged on the outside of the assembly cylinder, a connecting clamping plate is connected to the inner surface of the side guard plate, and clamping holes are formed on both sides of the fixed frame.

[0010] Preferably, the connecting clamping plate is movably inserted into the clamping hole, and a locking clamp for locking and positioning the connecting clamping plate is movably inserted into the clamping hole.

[0011] Preferably, a heat dissipation base is connected to the bottom of the fixed frame, an assembly cavity is formed at the bottom of the heat dissipation base, and the heat dissipation fins are embedded in the inner wall of the assembly cavity by screws.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] Through the arrangement of structures such as the fixed frame, the light-shielding layer, the perforated positioning shaft, the assembly cylinder, the light-shielding positioning mechanism and the voltage stabilizing component, the backlight module body can be assembled to the surface of the perforated positioning shaft through the assembly holes on the surface of the connecting frame plate, so that the bottom of the backlight module body is attached to the light-shielding layer. By rotating the adjusting rod in cooperation with the assembly cylinder, the stable block can be moved towards the inside of the fixed frame, and the anti-loosening spring is inserted into the hole of the perforated positioning shaft to position the backlight module body. At the same time, through the compression spring inside the stable block, the voltage stabilizing blocks at both ends of the connecting plate can be moved downward in cooperation with the guiding rod and pressed against the top of the stable block to ensure the stability of the attachment of the backlight module body to the light-shielding layer and the light-shielding effect of the light-shielding layer. And through the anti-loosening spring sleeved on the surface of the adjusting rod, the stability of the stable block in the hole of the perforated positioning shaft can be effectively ensured, preventing the stable block from loosening and displacing, ensuring the stability of the structure, and at the same time preventing light source leakage from causing uneven brightness around the screen or other areas, improving the accuracy of the image and the viewing experience. Description of the Drawings

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the side guard plate structure of the present utility model;

[0016] Figure 3 is a schematic diagram of the connecting frame plate structure of the present utility model;

[0017] Figure 4 is a schematic diagram of the fixed frame structure of the present utility model;

[0018] Figure 5 is a schematic diagram of the stable clamping block structure of the present utility model:

[0019] Figure 6 is a schematic diagram of the heat sink structure of the present utility model.

[0020] In the figure: 1, fixed frame; 2, heat dissipation base; 3, light shielding layer; 4, assembly cavity; 5, heat sink; 6, backlight module body; 7, connecting frame plate; 8, assembly hole; 9, light guide plate; 10, clamping hole; 11, side guard plate; 12, connecting card plate; 13, locking buckle; 14, hole-bearing positioning shaft; 15, assembly cylinder; 16, stable clamping block; 17, guide rod; 18, installation groove; 19, connecting plate; 20, voltage stabilizing block; 21, compression spring; 22, adjusting rod; 23, anti-loosening spring. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figure 1-6 , the present utility model provides: a backlight module with a light shielding mechanism, including a fixed frame 1, a light shielding layer 3 is connected to the inner wall of the fixed frame 1, a hole-bearing positioning shaft 14 is connected to the top of the light shielding layer 3, a backlight module body 6 is assembled on the surface of the hole-bearing positioning shaft 14 through a connecting frame plate 7, and a light guide plate 9 is connected to the top of the fixed frame 1 above the backlight module body 6; assembly cylinders 15 are connected to both sides of the fixed frame 1, a light shielding and positioning mechanism is arranged inside the assembly cylinders 15, the light shielding and positioning mechanism includes a stable clamping block 16, one end of the stable clamping block 16 is movably inserted into the hole-bearing positioning shaft 14, and a voltage stabilizing component for stabilizing the backlight module body 6 is arranged inside the stable clamping block 16; a heat sink 5 for heat dissipation is embedded at the bottom of the fixed frame 1.

[0023] It should be noted that by setting the fixed frame 1, the light-shielding layer 3, the perforated positioning shaft 14, the assembly cylinder 15, the light-shielding positioning mechanism and the voltage stabilizing component structure, the stability of the backlight module structure can be further improved, ensuring the firmness of the structure and the stability under pressure, reducing the separation or deformation of the module components, effectively shielding the backlight module, preventing light source leakage and avoiding uneven brightness around the screen or in other areas in a dark or dark field environment, and improving the accuracy of the image and the viewing experience.

[0024] Specifically, the light-shielding positioning mechanism includes: an adjusting rod 22 rotatably connected to one end of the stable block 16, and an anti-loosening spring 23 sleeved on the surface of the adjusting rod 22; wherein, one end of the adjusting rod 22 is connected to the outside of the fixed frame 1, the surface of the adjusting rod 22 is threadedly movably connected to one end of the assembly cylinder 15, and the stable block 16 is slidably connected to the inner wall of the assembly cylinder 15.

[0025] Among them, the stable block 16 is a structure for positioning the backlight module body 6 after assembly, the adjusting rod 22 is a component for adjusting the stable block 16, the anti-loosening spring 23 is a structure for limiting the position of the stable block 16 to ensure the stability of the position of the stable block 16, and the assembly cylinder 15 is a structure for assembling the stable block 16 and the adjusting rod 22.

[0026] The voltage stabilizing component includes: a connecting plate 19 movably connected inside the stable block 16, and voltage stabilizing blocks 20 connected to both ends of the connecting plate 19; wherein, an installation groove 18 is opened inside the stable block 16, a guide rod 17 is connected to the inner wall of the installation groove 18, and the connecting plate 19 is slidably connected to the surface of the guide rod 17. A compression spring 21 is arranged inside the stable block 16, the bottom of the compression spring 21 is connected to the top of the voltage stabilizing block 20, and the voltage stabilizing block 20 is pressed against the top of the connecting frame plate 7 by the compression spring 21.

[0027] In addition, the connecting plate 19 is a structure for connecting the voltage stabilizing blocks 20, the guide rod 17 is a structure for limiting and guiding the connecting plate 19, the installation groove 18 is a structure for assembling the guide rod 17, the compression spring 21 acts on the voltage stabilizing blocks 20, so that the voltage stabilizing blocks 20 press the backlight module body 6, further improving the light-shielding effect of the light-shielding layer 3. Assembly holes 8 matching the perforated positioning shaft 14 are opened on the surface of the connecting frame plate 7, facilitating the assembly of the perforated positioning shaft 14, and the connecting frame plate 7 is a positioning component for assembling the backlight module body 6.

[0028] On the outer side of the assembly cylinder 15, there is a side guard plate 11. On the inner surface of the side guard plate 11, there is a connecting clamping plate 12. Clamping holes 10 are formed on both sides of the fixed frame 1. The connecting clamping plate 12 is movably inserted into the interior of the clamping hole 10, and a locking fastener 13 for locking and positioning the connecting clamping plate 12 is movably inserted into the interior of the clamping hole 10. The bottom of the fixed frame 1 is connected with a heat dissipation base 2. An assembly cavity 4 is formed at the bottom of the heat dissipation base 2. The heat dissipation fins 5 are embedded on the inner wall of the assembly cavity 4 by screws.

[0029] Furthermore, the side guard plate 11 is a structure for protecting the outer ends of the assembly cylinder 15 and the adjusting rod 22. The clamping hole 10 is a clamping structure that cooperates with the connecting clamping plate 12. The locking fastener 13 is a component for fixing the connecting clamping plate 12. The heat dissipation base 2 is a structure for assembling the heat dissipation fins 5. The heat dissipation fins 5 and the heat dissipation holes formed on the surface can further improve the heat dissipation effect of the internal backlight module body 6.

[0030] Through the assembly holes 8 on the surface of the connecting frame plate 7, the backlight module body 6 can be assembled to the surface of the perforated positioning shaft 14, so that the bottom of the backlight module body 6 is attached to the light-shielding layer 3. By rotating the adjusting rod 22 in cooperation with the assembly cylinder 15, the stable clamping block 16 can be moved towards the interior of the fixed frame 1. In cooperation with the anti-loosening spring 23, it is inserted into the hole of the perforated positioning shaft 14 to position the backlight module body 6. At the same time, through the compression spring 21 inside the stable clamping block 16, the voltage stabilizing blocks 20 at both ends of the connecting plate 19 can be moved downward in cooperation with the guide rods 17 and pressed against the top of the stable clamping block 16 to ensure the stability of the attachment of the backlight module body 6 to the light-shielding layer 3, ensure the light-shielding effect of the light-shielding layer 3, and through the anti-loosening spring 23 sleeved on the surface of the adjusting rod 22, the stability of the stable clamping block 16 in the hole of the perforated positioning shaft 14 can be effectively ensured, preventing the stable clamping block 16 from loosening and displacing, ensuring the stability of the structure, and at the same time preventing light source leakage from causing uneven brightness around the screen or in other areas, improving the accuracy of the image and the viewing experience; and in cooperation with the heat dissipation fins 5, the heat generated when the backlight module works can be dissipated, avoiding damage to the backlight module due to excessive temperature. In cooperation with the setting of the heat dissipation holes, the heat dissipation effect is better.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A backlight module with a shading mechanism, characterized in that: include: A fixed frame (1), wherein the inner wall of the fixed frame (1) is connected to a light shielding layer (3), the top of the light shielding layer (3) is connected to a positioning shaft with a hole (14), the surface of the positioning shaft with a hole (14) is equipped with a backlight module body (6) via a connecting frame plate (7), and a light guide plate (9) is connected above the backlight module body (6) and located at the top of the fixed frame (1); Both sides of the fixed frame (1) are connected with assembly tubes (15), a shading positioning mechanism is arranged inside the assembly tube (15), the shading positioning mechanism comprises a stabilizing block (16), one end of the stabilizing block (16) is movably plugged into a positioning shaft (14) with a hole, and a voltage stabilizing component for stabilizing the backlight module body (6) is arranged inside the stabilizing block (16); A heat sink (5) for heat dissipation is embedded in the bottom of the fixed frame (1).

2. A backlight module with a shading mechanism according to claim 1, characterized in that: The shading positioning mechanism comprises: Rotate the adjustment rod (22) connected to one end of the stabilizing block (16), and an anti-loosening spring (23) sleeved on the surface of the adjusting rod (22); One end of the adjusting rod (22) is connected to the outside of the fixed frame (1), the surface thread of the adjusting rod (22) is movably connected to one end of the assembly cylinder (15), and the stabilizing block (16) is slidably connected to the inner wall of the assembly cylinder (15).

3. The backlight module with a shading mechanism according to claim 1, characterized in that: The voltage stabilizing component includes: a connecting plate (19) movably connected to the interior of the stabilizing block (16), and A voltage stabilizing block (20) connected to both ends of the connecting plate (19); The interior of the stabilizing block (16) is provided with a mounting groove (18), the inner wall of the mounting groove (18) is connected to a guide rod (17), and the connecting plate (19) is slidably connected to the surface of the guide rod (17).

4. The backlight module with a shading mechanism according to claim 3, characterized in that: A compression spring (21) is arranged inside the stabilizing block (16), the bottom of the compression spring (21) is connected to the top of the voltage stabilizing block (20), and the voltage stabilizing block (20) is pressed against the top of the connecting frame plate (7) by the compression spring (21).

5. The backlight module with a shading mechanism according to claim 1, characterized in that: A side guard plate (11) is arranged on the outside of the assembly tube (15), a connecting clamping plate (12) is connected to the inner surface of the side guard plate (11), and clamping holes (10) are provided on both sides of the fixed frame (1).

6. The backlight module with a shading mechanism according to claim 5, characterized in that: The connecting card plate (12) is movably inserted into the interior of the card hole (10), and a locking buckle (13) for locking and positioning the connecting card plate (12) is movably inserted into the interior of the card hole (10).

7. The backlight module with a shading mechanism according to claim 1, characterized in that: The bottom of the fixed frame (1) is connected to a heat dissipation base (2), the bottom of the heat dissipation base (2) is provided with an assembly cavity (4), and the heat sink (5) is embedded in the inner wall of the assembly cavity (4) by means of screws.

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