Vehicle-mounted waterproof backlight module with double light-emitting areas

Abstract

The utility model relates to the technical field of backlight modules, and particularly discloses a vehicle-mounted waterproof backlight module with double light-emitting areas. And a sealing ring II. After the first sealing ring and the second sealing ring coincide, the edge of the backlight module can be sealed, and the waterproof effect is achieved, so that water vapor is effectively prevented from entering the backlight module, electronic elements are effectively prevented from being affected with damp and even short circuit, and the display effect is prevented from being affected; meanwhile, after the first sealing ring and the second sealing ring coincide, a sharp corner is formed on one side, and water vapor is easily adsorbed and slides off at the sharp corner, so that the probability that the water vapor stays on the first sealing ring and the second sealing ring can be reduced, and the water vapor is further effectively prevented from entering the backlight module; in addition, the protruding blocks are clamped in the grooves, so that the sealing performance of the first sealing ring and the second sealing ring can be improved, and water vapor is further prevented from entering the backlight module.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of backlight module, especially relates to a waterproof backlight module of vehicle-mounted double light emitting area. BACKGROUND

[0002] The backlight module is a key component in the liquid crystal display, which is responsible for providing necessary light source to illuminate the LCD panel, so that the image and text can be displayed. The backlight module is usually composed of a light source, a light transmission module, a reflection module and other components to produce appropriate backlight.

[0003] During use, when the vehicle is in a high humidity environment for a long time, such as plum rain season or humid southern area, the vehicle-mounted backlight module is easily affected by water vapor, and humid air may penetrate into the backlight module; in addition, the sharp change of temperature may also cause the pressure difference between the inside and outside of the vehicle-mounted backlight module, thereby attracting water vapor to enter, causing the electronic components to be damp and even short-circuit, and further affecting the display effect. UTILITY MODEL CONTENTS

[0004] The utility model discloses a waterproof backlight module of vehicle-mounted double light emitting area to solve the technical problem that in the prior art, water vapor easily enters the backlight module under the environment of high humidity and sharp temperature change, causes the electronic components to be damp and even short-circuit, and affects the display effect.

[0005] The purpose of the utility model can be realized by the following technical scheme:

[0006] A waterproof backlight module of vehicle-mounted double light emitting area, comprising an iron frame, a rubber frame, a light guide plate, a film assembly and a light shielding rubber, the module further comprises:

[0007] A sealing ring one is arranged on the periphery of the iron frame, and a protruding block is arranged on the periphery of the sealing ring one;

[0008] A sealing ring two is arranged on the inner side of the rubber frame, and a groove is formed on the periphery of the sealing ring two, and the protruding block is clamped in the groove;

[0009] One side of the sealing ring one and the sealing ring two is inclined, and the sealing ring one and the sealing ring two form a sharp angle after overlapping.

[0010] As a preferred embodiment of the above technical scheme, a positioning frame is arranged on the periphery of the iron frame, and the periphery of the positioning frame abuts against the inner wall of the rubber frame.

[0011] As a preferred embodiment of the above technical scheme, the positioning frame is arranged at the edge position of the iron frame and the rubber frame, and a circle of activated carbon plates is arranged on the surface of the positioning frame.

[0012] As the preferred technical scheme, the inner side of the glue frame is provided with a set of extrusion ring one, the outer periphery of the iron frame is provided with a set of extrusion ring two, the contact surface of the extrusion ring one and the extrusion ring two is a bevel, and the extrusion ring one and the extrusion ring two extrude each other.

[0013] As the preferred technical scheme, the light-shielding glue and the glue frame are provided with a sealing frame.

[0014] As the preferred technical scheme, the film assembly comprises a polarizing film.

[0015] The beneficial effects of the present application are as follows:

[0016] 1. In the present application, the sealing ring one and the sealing ring two can seal the edge of the backlight module after overlapping, thereby achieving waterproof effect, effectively preventing water vapor from entering the backlight module, effectively preventing electronic components from being damp or even short-circuiting, and avoiding affecting the display effect. Meanwhile, the sealing ring one and the sealing ring two form a sharp corner on one side after overlapping, and water vapor is easy to be adsorbed and slide off at the sharp corner, thereby further effectively preventing water vapor from entering the backlight module. In addition, the protrusion is clamped in the groove, which can improve the sealing performance of the sealing ring one and the sealing ring two, and further prevent water vapor from entering the backlight module.

[0017] 2. In the present application, the protrusion on the sealing ring one is clamped in the groove on the sealing ring two, so that the sealing ring one and the sealing ring two are fixed together after overlapping, thereby achieving the effect of fixation.

[0018] 3. In the present application, the positioning frame can preliminarily block water vapor, thereby reducing the entry of water vapor into the sealing ring one and the sealing ring two, and improving the waterproof effect. Meanwhile, the activated carbon plate on the positioning frame can dry the surrounding air, effectively preventing the air from being humid, thereby avoiding the generation of water vapor and achieving the waterproof effect from the root. In addition, the width of the positioning frame is equal to the distance between the iron frame and the glue frame, and the positioning frame abuts against the glue frame after the sealing ring one and the sealing ring two overlap, thereby improving the stability of the fixed iron frame and glue frame. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the present application;

[0021] Figure 3 It is Figure 2 It is an enlarged structure schematic diagram of position A in the present application.

[0022] In the drawings:

[0023] 1. Main screen; 2. Secondary screen; 3. Iron frame; 4. Adhesive frame; 5. Light guide plate; 6. Membrane assembly; 7. Light-blocking adhesive; 8. Sealing ring one; 81. Protrusion; 9. Sealing ring two; 91. Groove; 10. Positioning frame; 11. Extrusion ring one; 12. Extrusion ring two; 13. Sealing frame. Detailed Implementation

[0024] 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 scope of protection of the present utility model.

[0025] like Figures 1-3 As shown, a vehicle-mounted dual-light-emitting waterproof backlight module includes an iron frame 3, a plastic frame 4, a light guide plate 5, a film assembly 6, and a light-shielding adhesive 7. The module also includes:

[0026] A sealing ring 8 is provided around the outer perimeter of the iron frame 3, and a ring of protrusions 81 is provided around the outer perimeter of the sealing ring 8.

[0027] A second sealing ring 9 is provided on the inner side of the rubber frame 4. A groove 91 is provided on the outer periphery of the second sealing ring 9, and the protrusion 81 is stuck in the groove 91.

[0028] Both sealing ring 8 and sealing ring 9 have one side that is inclined. After sealing ring 8 and sealing ring 9 overlap, sealing ring 8 and sealing ring 9 form a sharp angle.

[0029] In one embodiment, the sealing ring 8, the sealing ring 9, and the protrusion 81 can all be made of rubber. Rubber has high elasticity and good flexibility, which can achieve a good waterproof effect.

[0030] In practical applications, sealing ring 8 and sealing ring 9 overlap to seal the edge of the backlight module, achieving a waterproof effect. This effectively prevents moisture from entering the backlight module, thus preventing electronic components from getting damp or even short-circuiting and avoiding affecting the display effect.

[0031] After the sealing ring 8 and the sealing ring 9 overlap, they form a sharp corner on one side. Moisture is easily absorbed and slid off at the sharp corner, which reduces the chance of moisture remaining on the sealing ring 8 and the sealing ring 9, thereby further effectively preventing moisture from entering the backlight module.

[0032] The protrusion 81 on the sealing ring 1 8 is clamped in the groove 91 on the sealing ring 2 9, so that the sealing ring 1 8 and the sealing ring 2 9 are fixed after being overlapped, the iron frame 3 and the rubber frame 4 are fixed together, thereby playing a fixed role; at the same time, the protrusion 81 clamped in the groove 91 can improve the sealing of the sealing ring 1 8 and the sealing ring 2 9, and further avoid water vapor from entering the backlight module.

[0033] As shown in the figure, the iron frame 3 is provided with a positioning frame 10 around the periphery, and the outer periphery of the positioning frame 10 is in abutment with the inner wall of the rubber frame 4. Figure 3

[0034] Further, the positioning frame 10 is located at the edge position of the iron frame 3 and the rubber frame 4, and a circle of activated carbon plates is arranged on the surface of the positioning frame 10.

[0035] In actual application, the positioning frame 10 can preliminarily block water vapor, thereby reducing the water vapor entering the sealing ring 1 8 and the sealing ring 2 9, and improving the waterproof effect; in addition, the activated carbon plates on the positioning frame 10 can dry the surrounding air, effectively avoiding the air being humid, thereby avoiding the generation of water vapor, and playing a waterproof effect from the root;

[0036] The width of the positioning frame 10 is equal to the distance between the iron frame 3 and the rubber frame 4, and after the sealing ring 1 8 and the sealing ring 2 9 are overlapped, the positioning frame 10 abuts against the rubber frame 4, thereby improving the stability of the iron frame 3 and the rubber frame 4 after being fixed.

[0037] As shown in the figure, the inner side of the rubber frame 4 is provided with a circle of extrusion rings 1 1, and the outer periphery of the iron frame 3 is provided with a circle of extrusion rings 2 12, the contact surface of the extrusion ring 1 1 and the extrusion ring 2 12 is a bevel, and the extrusion ring 1 1 and the extrusion ring 2 12 are extruded with each other. Figure 3 In one case of the embodiment, the extrusion ring 1 1 and the extrusion ring 2 12 can both be of rubber material, which has high stretchability and good elasticity, and can play a good waterproof effect.

[0038] In actual application, after the sealing ring 1 8 and the sealing ring 2 9 are overlapped, the extrusion ring 1 1 and the extrusion ring 2 12 are extruded with each other to generate deformation, thereby providing contact pressure, compensating for the leakage gap, and achieving the purpose of sealing, which can further play a waterproof role, combined with the sealing of the sealing ring 1 8 and the sealing ring 2 9, forming multi-layer waterproof, and improving the waterproof effect of the backlight module;

[0039] The contact surface of the extrusion ring 1 1 and the extrusion ring 2 12 is a bevel, even if water vapor passes through the sealing ring 1 8 and the sealing ring 2 9, it is relatively difficult for the water vapor to pass through the extrusion ring 1 1 and the extrusion ring 2 12 due to the long path of the bevel, thereby improving the waterproof effect;

[0040]

[0041] ​​The mutual extrusion of the extrusion ring one 11 and the extrusion ring two 12 also improves the stability of the iron frame 3 and the rubber frame 4 after being fixed.

[0042] Further, a sealing frame 13 is arranged between the light shielding rubber 7 and the rubber frame 4, and the sealing frame 13 seals the connection between the light shielding rubber 7 and the rubber frame 4, thereby further improving the waterproof effect of the backlight module.

[0043] As shown in Figure 2 and Figure 3 The film assembly 6 includes a polarizing film.

[0044] In one case of the embodiment, the film assembly 6 further includes a reflecting film, a light enhancing film, a diffusing film and the like.

[0045] In actual application, the vehicle-mounted backlight module forms the main screen 1 and the auxiliary screen 2, and the main screen 1 and the auxiliary screen 2 both have the polarizing film. The main screen 1 is for the driver to watch, and the auxiliary screen 2 is for the co-driver to watch. The main screen 1 and the auxiliary screen 2 are arranged side by side. By arranging the polarizing film, the brightness of the main screen 1 for the driver to watch is appropriate, and the brightness of the auxiliary screen 2 for the driver to watch is dark. However, the passenger at the co-driver position is opposite, and the brightness of the auxiliary screen 2 for the passenger to watch is appropriate, and the brightness of the main screen 1 for the passenger to watch is dark. In this way, the double light emitting areas are formed, thereby increasing the comfortable backlight effect.

[0046] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by the person skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only for illustrating the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A waterproof back light module with double light-emitting areas on a vehicle, comprising an iron frame (3), a rubber frame (4), a light guide plate (5), a film assembly (6) and light-blocking rubber (7), characterized in that, The module further comprises: A sealing ring one (8) is arranged on the periphery of the iron frame (3), and a protrusion (81) is arranged on the periphery of the sealing ring one (8); A sealing ring two (9) is arranged on the inner side of the rubber frame (4), and a groove (91) is arranged on the periphery of the sealing ring two (9), and the protrusion (81) is clamped in the groove (91); One side of the sealing ring one (8) and the sealing ring two (9) is inclined, and after the sealing ring one (8) and the sealing ring two (9) coincide, the sealing ring one (8) and the sealing ring two (9) form a sharp corner shape.

2. The waterproof back light module with double light emitting areas for vehicle according to claim 1, characterized in that, The periphery of the iron frame (3) is provided with a positioning frame (10), and the periphery of the positioning frame (10) abuts against the inner wall of the rubber frame (4). 3.The waterproof back light module with double light emitting areas for vehicle according to claim 2, characterized in that, The positioning frame (10) is located at the edge position of the iron frame (3) and the rubber frame (4), and a circle of activated carbon plates is arranged on the surface of the positioning frame (10).

4. The waterproof back light module with double light emitting areas for vehicle according to claim 1, characterized in that, The inner side of the rubber frame (4) is provided with a circle of extrusion ring one (11), and the periphery of the iron frame (3) is provided with a circle of extrusion ring two (12), the contact surface of the extrusion ring one (11) and the extrusion ring two (12) is inclined, and the extrusion ring one (11) and the extrusion ring two (12) are extruded.

5. The waterproof back light module with double light emitting areas for vehicle according to claim 1, characterized in that, A sealing frame (13) is arranged between the light-shielding rubber (7) and the rubber frame (4).

6. The waterproof back light module with double light emitting areas for vehicle according to claim 1, characterized in that, The film assembly (6) comprises a polarizing film.

Images