Vehicle-mounted backlight module capable of preventing glass cover plate from falling off and vehicle-mounted display device

Abstract

The vehicle-mounted backlight module capable of preventing the glass cover plate from falling off comprises a lower frame, a reflecting film, a light guide plate, an optical film, a rubber frame and an adhesive tape, the lower frame is provided with a containing cavity, the reflecting film is arranged in the containing cavity, the light guide plate is arranged on the reflecting film, the optical film is arranged on the light guide plate, and the adhesive tape is arranged in the containing cavity. The rubber frame is connected with the lower frame, the rubber frame comprises a bearing surface, the bearing surface is arranged on one side, far away from the optical film, of the rubber frame, the bearing surface is fixedly connected with a rough surface layer, the adhesive tape is connected to the rough surface layer, and the adhesive tape is used for connecting a glass cover plate with the rubber frame. The vehicle-mounted backlight module capable of preventing the glass cover plate from falling off can solve the problem that in the prior art, the glass cover plate is prone to degumming in a severe environment, product quality and production efficiency are improved, and cost is reduced. The utility model further relates to a vehicle-mounted display device.

Description

Technical Field

[0001] This utility model relates to the field of display screen technology, and in particular to a vehicle-mounted backlight module and vehicle-mounted display device for preventing the glass cover from falling off. Background Technology

[0002] With the development of automotive intelligence, traditional backlight structures often experience the phenomenon of TP cover plate and rubber frame delamination, leading to the problem of TP cover plate and rubber frame falling off during vehicle operation. One of the main reasons for this problem is the poor dyne value of the adhesive surface, which makes it easy to delaminate in harsh environments. This not only affects the driver's comfort experience, but may also affect the driver's safety. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a vehicle-mounted backlight module that prevents the glass cover from falling off. This vehicle-mounted backlight module can solve the problem of glass cover easily falling off in harsh environments in the prior art, improve product quality and production efficiency, and reduce costs.

[0004] This utility model provides a vehicle-mounted backlight module to prevent glass cover plates from falling off, including a lower frame, a reflective film, a light guide plate, an optical film, a frame, and tape. The lower frame has a receiving cavity, the reflective film is disposed in the receiving cavity, the light guide plate is disposed on the reflective film, the optical film is disposed on the light guide plate, the frame is connected to the lower frame, the frame includes a bearing surface, the bearing surface is disposed on the side of the frame away from the optical film, a rough surface layer is fixedly connected to the bearing surface, and the tape is connected to the rough surface layer. The tape is used to connect the glass cover plate to the frame.

[0005] In one embodiment, the roughness of the rough layer is 1.5 μm to 2.0 μm.

[0006] In one embodiment, the frame includes a connecting plate and a support plate fixedly connected to the connecting plate. The support plate is used to support the glass cover plate, the support surface is disposed on the support plate, and the connecting plate is connected to the lower frame.

[0007] In one embodiment, the support plate includes a first support portion, a second support portion, a third support portion, and a fourth support portion. The first support portion and the second support portion are disposed opposite to each other, and the third support portion and the fourth support portion are disposed opposite to each other. The first support portion and the second support portion are respectively fixedly connected to the third support portion and the fourth support portion. The first support portion, the second support portion, the third support portion, and the fourth support portion are respectively provided with the rough surface layer.

[0008] In one embodiment, the width of the rough layer is greater than or equal to the width of the tape.

[0009] In one embodiment, the rough layer is an irregular or regular concave-convex surface structure, a herringbone structure, a spark pattern structure, or a wavy structure.

[0010] In one embodiment, the dyne value of the rough layer is greater than 34.

[0011] In one embodiment, the tape is VHB tape.

[0012] In one embodiment, the vehicle-mounted backlight module further includes a light strip, which is fixedly connected to the inner wall of the lower frame.

[0013] This utility model also relates to an in-vehicle display device, including the aforementioned in-vehicle backlight module for preventing the glass cover from falling off.

[0014] The vehicle backlight module of this utility model has a rough surface layer fixedly connected to the bearing surface of the frame. Adhesive tape is adhered to the rough surface layer, which increases the adhesion of the tape and makes it less likely to fall off. In addition, when the glass cover is connected to the frame by the tape, it can also prevent the glass cover from falling off during the car's operation, thus improving the driver's user experience and safety, improving product quality and production efficiency, and reducing costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a front view structural diagram of the adhesive frame of this utility model.

[0017] Figure 2 This is a partial cross-sectional structural diagram of the vehicle-mounted backlight module of this utility model.

[0018] Figure 3 This is a schematic diagram of the disassembled structure of the vehicle-mounted backlight module of this utility model.

[0019] Reference numerals: 101; lower frame; 11; reflective film; 12; light guide plate; 13; optical film; 14; diffuser film; 141; brightness enhancement film; 142; brightening film; 143; frame; 15; connecting plate; 151; carrier plate; 152; rough surface layer; 152a; first carrier part; 1521; second carrier part; 1522; third carrier part; 1523; fourth carrier part; 1524; tape; 16; light strip; 17; thermally conductive double-sided adhesive; 18; glass cover plate; 21.

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0023] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0025] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0026] like Figures 1 to 3As shown, the automotive backlight module for preventing the glass cover from detaching includes a lower frame 11, a reflective film 12, a light guide plate 13, an optical film 14, a frame 15, and tape 16. The lower frame 11 has a receiving cavity 101, the reflective film 12 is disposed within the receiving cavity 101, the light guide plate 13 is disposed on the reflective film 12, the optical film 14 is disposed on the light guide plate 13, and the frame 15 is connected to the lower frame 11. The frame 15 includes a bearing surface located on the side of the frame 15 away from the optical film 14. A rough surface layer 152a is fixedly connected to the bearing surface, and tape 16 is connected to the rough surface layer 152a. Tape 16 is used to connect the glass cover 21 to the frame 15; tape 16 is VHB tape. In this embodiment, the rough surface layer 152a is integrally formed by a mold during the manufacturing of the frame 15, which is simple, convenient, and quick to manufacture, facilitating factory use, improving production efficiency, and reducing costs.

[0027] The vehicle backlight module of this utility model has a rough surface layer 152a fixedly connected to the bearing surface of the frame 15. Adhesive tape 16 is adhered to the rough surface layer 152a. The rough surface layer 152a can increase the adhesion of the adhesive tape 16, making the adhesive tape 16 less likely to fall off. In addition, when the glass cover plate 21 is connected to the frame 15 through the adhesive tape 16, it can also avoid the problem of the glass cover plate 21 falling off the frame 15 during the car's operation, thus improving the driver's user experience and safety, improving product quality and production efficiency, and reducing costs.

[0028] Preferably, the roughness of the rough layer 152a is Ra 1.5um ~ 2.0um, preferably 1.5um, 1.6um, 1.8um or 2.0um, etc.; the width of the rough layer 152a is greater than or equal to the width of the tape 16, so as to ensure that the bonding surface between the tape 16 and the frame 15 is the rough layer 152a, which increases the adhesion between the VHB adhesive and the frame 15 and ensures that the tape 16 between the glass cover plate 21 and the frame 15 is not easy to fall off.

[0029] Preferably, the frame 15 includes a connecting plate 151 and a support plate 152 fixedly connected to the connecting plate 151. The support plate 152 is used to support the glass cover plate 21, and the support surface is provided on the support plate 152. The connecting plate 151 is connected to the lower frame 11. The support plate 152 includes a first support part 1521, a second support part 1522, a third support part 1523, and a fourth support part 1524. The four support parts 1524 are an integral structure. The first support part 1521 and the second support part 1522 are arranged opposite to each other, and the third support part 1523 and the fourth support part 1524 are arranged opposite to each other. The first support part 1521 and the second support part 1522 are fixedly connected to the third support part 1523 and the fourth support part 1524 respectively. The first support part 1521, the second support part 1522, the third support part 1523 and the fourth support part 1524 are respectively provided with a rough surface layer 152a.

[0030] Preferably, the rough layer 152a has an irregular or regular concave-convex surface structure, herringbone structure, spark pattern structure or wave pattern structure, etc., but is not limited to this.

[0031] Preferably, the dyne value of the rough layer 152a is greater than 34. The dyne value is a unit used to quantify surface tension and affects the wettability and adhesion of the material. The higher the dyne value, the easier it is to be adhered. It can be seen that the adhesion of VHB tape to the rough layer 152a is greater than that of VHB tape to a smooth surface in the prior art. Since the glass cover plate 21 is connected to the frame 15 through VHB tape, the adhesion of the glass cover plate 21 is stronger, and the glass cover plate 21 is not easy to fall off even in harsh environments.

[0032] Preferably, the optical film 14 includes a diffusion film 141, a brightness enhancement film 142, and a brightness enhancement film 143. The diffusion film 141 is disposed on the light guide plate 13, the brightness enhancement film 142 is disposed on the diffusion film 141, and the brightness enhancement film 143 is disposed on the brightness enhancement film 142. The connection method between the films is preferably to use double-sided adhesive. The optical film 14 and the light guide plate 13 can be positioned by means of a clip and a slot, and then connected by double-sided adhesive.

[0033] Preferably, the vehicle backlight module further includes a light strip 17, which is fixedly connected to the inner wall of the lower frame 11, i.e., the light strip 17 is fixedly connected to the inner wall of the lower frame 11 by thermally conductive double-sided adhesive 18.

[0034] This utility model also relates to an in-vehicle display device, including the aforementioned in-vehicle backlight module for preventing the glass cover from falling off. In this embodiment, the in-vehicle display device is preferably a high-end in-vehicle instrument panel, in-vehicle central control display, in-vehicle dashcam, in-vehicle DVD navigation, in-vehicle dashboard integrated display, in-vehicle streaming media rearview mirror, or car seat headrest display, but is not limited thereto.

[0035] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A vehicle-mounted backlight module for preventing a glass cover plate from falling off, characterized in that, The vehicle-mounted backlight module comprises a lower frame (11), a reflective film (12), a light guide plate (13), an optical film (14), a glue frame (15) and a tape (16), the lower frame (11) is provided with a containing cavity (101), the reflective film (12) is arranged in the containing cavity (101), the light guide plate (13) is arranged on the reflective film (12), the optical film (14) is arranged on the light guide plate (13), the glue frame (15) is connected with the lower frame (11), the glue frame (15) comprises a bearing surface, the bearing surface is arranged on the side of the glue frame (15) away from the optical film (14), the bearing surface is fixedly connected with a rough surface layer (152a), the tape (16) is connected to the rough surface layer (152a), and the tape (16) is used for connecting the glass cover plate (21) and the glue frame (15).

2. The vehicle-mounted back light module for preventing the glass cover from falling off according to claim 1, wherein, The roughness of the rough surface layer (152a) is 1.5um-2.0um.

3. The vehicle-mounted back light module for preventing the glass cover from falling off according to claim 1, wherein, The glue frame (15) comprises a connecting plate (151) and a bearing plate (152) fixedly connected with the connecting plate (151), the bearing plate (152) is used for bearing the glass cover plate (21), the bearing surface is arranged on the bearing plate (152), and the connecting plate (151) is connected with the lower frame (11).

4. The vehicle-mounted back light module for preventing the glass cover from falling off according to claim 3, characterized in that, The bearing plate (152) comprises a first bearing part (1521), a second bearing part (1522), a third bearing part (1523) and a fourth bearing part (1524), the first bearing part (1521) and the second bearing part (1522) are arranged opposite to each other, the third bearing part (1523) and the fourth bearing part (1524) are arranged opposite to each other, the first bearing part (1521) and the second bearing part (1522) are fixedly connected with the third bearing part (1523) and the fourth bearing part (1524) respectively, and the first bearing part (1521), the second bearing part (1522), the third bearing part (1523) and the fourth bearing part (1524) are respectively provided with the rough surface layer (152a).

5. The vehicle-mounted back light module for preventing the glass cover from falling off according to claim 2, wherein, The width of the rough surface layer (152a) is greater than or equal to the width of the tape (16).

6. The vehicle-mounted back light module for preventing glass cover plate from falling off according to any one of claims 1 to 5, characterized in that, The rough surface layer (152a) is an irregular or regular concave-convex surface structure, a herringbone structure, a spark pattern structure or a wave pattern structure.

7. The vehicle-mounted back light module for preventing glass cover plate from falling off according to claim 1, wherein, The dyne value of the rough surface layer (152a) is greater than 34.

8. The vehicle-mounted back light module for preventing the glass cover from falling off according to claim 2, wherein, The tape (16) is a VHB tape.

9. The vehicle-mounted back light module for preventing the glass cover from falling off according to claim 1, wherein, The vehicle-mounted backlight module further comprises a light bar (17) fixedly connected to the inner wall of the lower frame (11).

10. A display device for a vehicle, characterized by comprising: The vehicle-mounted backlight module for preventing the glass cover plate from falling off comprises any one of claims 1-9. The vehicle-mounted backlight module for preventing the glass cover plate from falling off comprises any one of claims 1-9.

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