Vehicle-mounted backlight module capable of preventing abnormal sound caused by loosening of diaphragm

Abstract

The utility model discloses a vehicle-mounted backlight module capable of preventing abnormal sound caused by loosening of a diaphragm, which comprises a U-shaped frame, L-shaped limiting plates are fixedly connected to the left end and the right end of the U-shaped frame, U-shaped unit frames are fixedly connected to the lower inner wall of the U-shaped frame, the U-shaped unit frames are positioned at four corners of the U-shaped frame, dampers are fixedly connected to the lower inner walls of the U-shaped unit frames, and the dampers are fixedly connected to the left end and the right end of the U-shaped frame. The upper end of the damper is fixedly connected with a damping spring, the upper end of the damping spring is fixedly connected with a supporting block, and the supporting block is installed at the upper end of the U-shaped unit frame in a limiting mode. An anti-friction structure is formed by the double-sided foam tape and the L-shaped limiting plate, so that the brightness enhancement film can be prevented from generating friction, the protection of the backlight module is facilitated, and the protection property is improved; the anti-friction structure is formed by the double-sided foam tape and the L-shaped limiting plate, friction and loosening abnormal sound of the brightness enhancement film can be prevented, protection of the backlight module is facilitated, and the protection performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive backlight module technology, and in particular to an automotive backlight module that prevents the diaphragm from loosening and making abnormal noise. Background Technology

[0002] Existing automotive backlight modules are prone to diaphragm friction during use, resulting in friction debris and loosening noises, which can affect the module's light emission. A Chinese patent discloses a "novel automotive backlight module" (application number CN202120011337.8), which uses an inner frame to support the diffuser plate, ensuring stable installation of the heavy diffuser plate within the backlight module. This guarantees that the backlight module, when used as part of an automotive display, meets the requirements of the automotive environment and ensures long-term stability and reliability. However, this automotive backlight module is susceptible to friction-induced foreign matter buildup, which can affect the module's light emission function. Utility Model Content

[0003] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a vehicle backlight module that prevents the diaphragm from loosening and making abnormal noise. The anti-friction structure is composed of double-sided foam tape and L-shaped limiting plate, which can prevent the brightness enhancement film from rubbing and loosening and making abnormal noise, which is beneficial to the protection of the backlight module and improves its protective performance. The multi-directional shock absorption mechanism composed of U-shaped frame, U-shaped unit frame, damper, shock absorption spring, support block and mounting plate can provide internal shock absorption protection to prevent the components of the backlight module from being damaged by vibration, which helps to further improve the protection of the backlight module itself.

[0004] This utility model also provides a vehicle backlight module with the above-mentioned method for preventing diaphragm loosening and abnormal noise, comprising: a U-shaped frame, with L-shaped limiting plates fixedly connected to the left and right ends of the U-shaped frame, a U-shaped unit frame fixedly connected to the lower inner wall of the U-shaped frame, the U-shaped unit frame located at the four corners of the U-shaped frame, a damper fixedly connected to the lower inner wall of the U-shaped unit frame, a shock-absorbing spring fixedly connected to the upper end of the damper, a support block fixedly connected to the upper end of the shock-absorbing spring, and the support block being limited and installed at the upper end of the U-shaped unit frame; a mounting plate, the mounting plate being fixedly connected to the upper end of the support block, and the upper end of the mounting plate being provided with a brightness enhancement film, a diffuser, a light guide plate and a reflector in sequence from top to bottom, the upper surface of the brightness enhancement film being bonded to the upper inner wall of the L-shaped limiting plate by double-sided foam tape, and light sources being provided at the left and right ends of the light guide plate.

[0005] According to the present invention, a vehicle-mounted backlight module for preventing diaphragm loosening and abnormal noise includes a U-shaped frame with encapsulation plates fixedly connected to its front and rear ends. A heat dissipation window is fitted inside the encapsulation plate, and the heat dissipation window is equipped with a partition strip. This facilitates heat dissipation for the vehicle-mounted backlight module.

[0006] According to the present invention, a vehicle backlight module for preventing diaphragm loosening and abnormal noise is provided, wherein the inner wall of the L-shaped limiting plate abuts against the side surface of the U-shaped frame, and the upper inner wall of the L-shaped limiting plate abuts against the upper end of the U-shaped frame. This makes the structure compact and stable.

[0007] According to the present invention, a vehicle backlight module for preventing diaphragm loosening and abnormal noise is provided. The upper end of the L-shaped limiting plate is fixedly connected to the U-shaped frame by fixing bolts, which are symmetrically distributed at the left and right ends of the L-shaped limiting plate. This ensures a stable and secure structure and facilitates the assembly and disassembly of the module.

[0008] According to the present invention, a vehicle-mounted backlight module for preventing diaphragm loosening and abnormal noise includes a fixing plate fixedly connected to the side surface of the L-shaped limiting plate. The fixing plate is provided with threaded mounting holes, which are symmetrically distributed at both ends of the fixing plate. This facilitates the installation and fixing of the vehicle-mounted backlight module.

[0009] According to the present invention, a vehicle-mounted backlight module for preventing diaphragm loosening and abnormal noise includes a U-shaped unit frame whose side end is fixedly connected to the inner side wall of the U-shaped frame, making the structure stable and firm. Limiting grooves are provided on both the left and right inner sides of the U-shaped unit frame to facilitate the limiting installation of the support blocks.

[0010] According to the present invention, a vehicle-mounted backlight module for preventing diaphragm loosening and abnormal noise includes a support block with limiting slide rods fixedly connected to both ends. The support block is slidably connected to the limiting slide groove via the limiting slide rods. This facilitates the stable lifting and lowering of the support block.

[0011] According to the present invention, a vehicle-mounted backlight module for preventing diaphragm loosening and abnormal noise is provided, wherein the lower end of the light source abuts against the upper surface of the reflector, and the light source is located below the L-shaped limiting plate. This facilitates uniform light emission.

[0012] Beneficial effects:

[0013] 1. Compared with the existing technology, this vehicle backlight module that prevents the diaphragm from loosening and making abnormal noise uses a double-sided foam tape and an L-shaped limiting plate to form an anti-friction structure, which can prevent the brightness enhancement film from rubbing and loosening and making abnormal noise, which is beneficial to the protection of the backlight module and improves its protective performance.

[0014] 2. Compared with the existing technology, this vehicle backlight module that prevents diaphragm loosening and abnormal noise has a multi-directional shock absorption mechanism composed of a U-shaped frame, a U-shaped unit frame, a damper, a shock absorption spring, a support block and a mounting plate. It can provide internal shock absorption protection to prevent the components of the backlight module from being damaged by vibration, which helps to further improve the protection of the backlight module itself. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a schematic diagram of the internal structure of a vehicle backlight module for preventing diaphragm loosening and abnormal noise according to the present invention.

[0017] Figure 2 This is a schematic diagram of the external structure of a vehicle backlight module for preventing diaphragm loosening and abnormal noise according to the present invention.

[0018] Figure 3 This is a schematic diagram of the transverse three-dimensional cross-sectional structure of a vehicle backlight module for preventing diaphragm loosening and abnormal noise according to the present invention.

[0019] Figure 4 This is a longitudinal three-dimensional cross-sectional structural diagram of a vehicle-mounted backlight module for preventing diaphragm loosening and abnormal noise, according to the present invention.

[0020] Legend:

[0021] 1. U-shaped frame; 2. Threaded mounting holes; 3. Light source; 4. L-shaped limiting plate; 5. Support block; 6. U-shaped unit frame; 7. Shock-absorbing spring; 8. Damper; 9. Limiting slide bar; 10. Limiting slide groove; 11. Brightness enhancement film; 12. Diffuser sheet; 13. Light guide plate; 14. Reflector sheet; 15. Mounting plate; 16. Double-sided foam tape; 17. Fixing bolts; 18. Encapsulation plate; 19. Heat dissipation window; 20. Separator strip; 21. Fixing plate. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] Reference Figure 1 , Figure 2 and Figure 4This utility model discloses a vehicle backlight module for preventing diaphragm loosening and abnormal noise. It includes a U-shaped frame 1, with encapsulation plates 18 fixedly connected to the front and rear ends of the U-shaped frame 1. A heat dissipation window 19 is sleeved inside the encapsulation plate 18, and the heat dissipation window 19 is provided with a partition strip 20. L-shaped limiting plates 4 are fixedly connected to the left and right ends of the U-shaped frame 1. The inner side wall of the L-shaped limiting plate 4 abuts against the side surface of the U-shaped frame 1, and the upper inner wall of the L-shaped limiting plate 4 abuts against the upper end of the U-shaped frame 1. The upper end of the L-shaped limiting plate 4 is fixedly connected to the U-shaped frame 1 by fixing bolts 17, which are symmetrically distributed at the left and right ends of the L-shaped limiting plate 4. A fixing plate 21 is fixedly connected to the side surface of the L-shaped limiting plate 4, and the fixing plate 21 is provided with screws. Threaded mounting holes 2 are symmetrically distributed on the left and right ends of the fixing plate 21. A U-shaped unit frame 6 is fixedly connected to the lower inner wall of the U-shaped frame 1. The U-shaped unit frame 6 is located at the four corners of the U-shaped frame 1. The side ends of the U-shaped unit frame 6 are fixedly connected to the side inner wall of the U-shaped frame 1. Limiting grooves 10 are provided on both the left and right side inner walls of the U-shaped unit frame 6. A damper 8 is fixedly connected to the lower inner wall of the U-shaped unit frame 6. A shock-absorbing spring 7 is fixedly connected to the upper end of the damper 8. A support block 5 is fixedly connected to the upper end of the shock-absorbing spring 7. The support block 5 is limited and installed on the upper end of the U-shaped unit frame 6. Limiting slide rods 9 are fixedly connected to both the left and right ends of the support block 5. The support block 5 is slidably connected to the limiting grooves 10 through the limiting slide rods 9.

[0024] Specifically, the L-shaped limiting plate 4 is installed and fixed to both ends of the U-shaped frame 1 by fixing bolts 17, and then the L-shaped limiting plate 4 is installed and fixed by fixing plate 21 to prevent the diaphragm from loosening and making abnormal noise. During use, the damper 8 and shock-absorbing spring 7 in the U-shaped unit frame 6 will work together to generate shock absorption, which can protect the components of the vehicle backlight module from vibration damage.

[0025] Reference Figure 1 and Figure 3 Mounting plate 15 is fixedly connected to the upper end of support block 5. The upper end of mounting plate 15 is provided with a brightness enhancement film 11, a diffuser 12, a light guide plate 13 and a reflector 14 from top to bottom. The upper surface of the brightness enhancement film 11 is bonded to the upper inner wall of the L-shaped limiting plate 4 by double-sided foam tape 16. Light sources 3 are provided at the left and right ends of the light guide plate 13. The lower end of the light source 3 abuts against the upper surface of the reflector 14. The light source 3 is located below the L-shaped limiting plate 4.

[0026] Specifically, when the vehicle backlight module that prevents the diaphragm from loosening and making abnormal noise emits light, the light source 3 first emits light, the light enters the light guide plate 13 and propagates within the light guide plate 13, the reflector 14 reflects the light, the light is emitted from the surface of the light guide plate 13, the diffuser 12 makes the light uniform, when the light passes through the brightness enhancement film 11, the brightness enhancement film 11 brightens the light, and the L-shaped limiting plate 4 is bonded and fixed to the brightness enhancement film 11 by double-sided foam tape 16, which can prevent the brightness enhancement film 11 from rubbing and loosening and making abnormal noise, which is beneficial to the protection of the backlight module.

[0027] Working principle: Double-sided foam tape 16 is bonded between the L-shaped limiting plate 4 and the brightness enhancement film 11 of the vehicle backlight module to prevent the film from loosening and making abnormal noise. The L-shaped limiting plate 4 will be bonded and fixed to the brightness enhancement film 11, which can prevent the brightness enhancement film 11 from rubbing and loosening and making abnormal noise. The damper 8 and the shock absorption spring 7 in the U-shaped unit frame 6 will work together to generate a shock absorption effect, which can protect the components of the vehicle backlight module from shock.

[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A vehicle-mounted backlight module capable of preventing loose film from making noise, characterized in that, The application relates to a U-shaped frame (1), left and right ends of the U-shaped frame (1) being fixedly connected with L-shaped limiting plates (4), a lower inner wall of the U-shaped frame (1) being fixedly connected with a U-shaped unit frame (6), the U-shaped unit frame (6) being located at four corners of the U-shaped frame (1), a lower inner wall of the U-shaped unit frame (6) being fixedly connected with dampers (8), upper ends of the dampers (8) being fixedly connected with shock-absorbing springs (7), upper ends of the shock-absorbing springs (7) being fixedly connected with supporting blocks (5), the supporting blocks (5) being limitingly installed at upper ends of the U-shaped unit frame (6). An installation plate (15) is fixedly connected at the upper end of the supporting block (5), an upper end of the installation plate (15) being sequentially provided, from top to bottom, with a brightness enhancement film (11), a diffusion sheet (12), a light guide plate (13) and a reflecting sheet (14), an upper surface of the brightness enhancement film (11) being glued to an upper inner wall of the L-shaped limiting plate (4) through double-sided foam tape (16), left and right ends of the light guide plate (13) being provided with light sources (3). The U-shaped frame (1) is fixedly connected with packaging plates (18) at front and rear ends, the packaging plates (18) being sleeved with heat dissipation windows (19), the heat dissipation windows (19) being provided with partition strips (20).

2. The vehicle-mounted backlight module for preventing loose sound of the diaphragm according to claim 1, characterized in that, The L-shaped limiting plate (4) is in abutment with the side surface of the U-shaped frame (1) at a side inner wall, and the L-shaped limiting plate (4) is in abutment with the upper end of the U-shaped frame (1) at an upper inner wall.

3. The vehicle-mounted backlight module for preventing loose sound of the diaphragm according to claim 1, characterized in that, The L-shaped limiting plate (4) is fixedly connected with the U-shaped frame (1) at the upper end through fixed bolts (17), and the fixed bolts (17) are symmetrically distributed at left and right ends of the L-shaped limiting plate (4).

4. The vehicle-mounted backlight module for preventing loose sound of the diaphragm according to claim 1, characterized in that, The L-shaped limiting plate (4) is fixedly connected with a fixed plate (21) at a side surface, the fixed plate (21) being provided with threaded mounting holes (2), and the threaded mounting holes (2) are symmetrically distributed at left and right ends of the fixed plate (21).

5. The vehicle-mounted backlight module for preventing loose sound of the diaphragm according to claim 1, characterized in that, The U-shaped unit frame (6) is fixedly connected with the U-shaped frame (1) at side ends of a side inner wall, and the U-shaped unit frame (6) is provided with limiting sliding grooves (10) at left and right side inner walls.

6. The vehicle-mounted backlight module for preventing loose sound of the diaphragm according to claim 1, characterized in that, The supporting block (5) is fixedly connected with limiting sliding rods (9) at left and right ends, and the supporting block (5) is slidingly connected with the limiting sliding grooves (10) through the limiting sliding rods (9).

7. The vehicle-mounted backlight module for preventing loose sound of the diaphragm according to claim 1, characterized in that, The light sources (3) are in abutment with the upper surface of the reflecting sheet (14) at lower ends, and the light sources (3) are located below the L-shaped limiting plate (4).

8. The vehicle-mounted backlight module for preventing loose sound of the diaphragm according to claim 1, characterized in that, ​

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