Vehicle-mounted backlight module for preventing vibration abnormal sound and vehicle-mounted display device

Abstract

The utility model provides a vehicle-mounted backlight module for preventing vibration abnormal sound, which comprises a lower frame and an anti-vibration piece, the lower frame comprises a bottom plate and a side frame fixedly connected with the bottom plate, an accommodating cavity is formed between the side frame and the bottom plate, the side frame comprises a first surface and a second surface which are oppositely arranged, and the first surface and the second surface are opposite to each other. The first surface is arranged in the containing cavity, the second surface is provided with a plurality of fixing clamping lugs, the fixing clamping lugs are used for connecting the vehicle-mounted backlight module with a vehicle frame, and the anti-vibration pieces are connected to the fixing clamping lugs and arranged between the fixing clamping lugs and the vehicle frame. The vehicle-mounted backlight module capable of preventing the abnormal sound caused by vibration is simple in structure, the abnormal sound phenomenon caused by vibration can be reduced, and the shock resistance of the whole structure is improved. The utility model further relates to a vehicle-mounted display device.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, in particular to a vehicle-mounted backlight module and a vehicle-mounted display device for preventing vibration and abnormal noise. Background Art

[0002] With the development of vehicle intelligence, extra-long dual-screen vehicle-mounted displays have become an important part of modern vehicle interiors. However, during vehicle driving, due to mechanical vibrations and impacts caused by uneven road surfaces, in the traditional backlight structure, when connected to the vehicle frame, it is directly connected through the cooperation of a buckle and a card slot, making the lower frame of the backlight structure in hard contact with the vehicle frame. During driving, collisions between the buckle of the lower frame and the vehicle frame will cause vibration and abnormal noise problems. This not only affects the comfort experience of the driver but may also damage the electronic components inside the backlight and shorten the service life. Summary of the Utility Model

[0003] In view of this, the purpose of the utility model is to provide a vehicle-mounted backlight module for preventing vibration and abnormal noise. The vehicle-mounted backlight module has a simple structure, can reduce the abnormal noise phenomenon caused by vibration, and improve the seismic resistance of the overall structure.

[0004] The utility model provides a vehicle-mounted backlight module for preventing vibration and abnormal noise, including a lower frame and a shock-proof member. The lower frame includes a bottom plate and a side frame fixedly connected to the bottom plate. A receiving cavity is formed between the side frame and the bottom plate. The side frame includes a first surface and a second surface arranged opposite to each other. The first surface is arranged inside the receiving cavity, and the second surface is provided with a plurality of fixing lugs for connecting the vehicle-mounted backlight module to the vehicle frame. The shock-proof member is connected to the fixing lugs and is arranged between the fixing lugs and the vehicle frame.

[0005] In one embodiment, the shock-proof member includes a flame-retardant layer and an adhesive layer, and the adhesive layer is connected between the flame-retardant layer and the fixing lugs.

[0006] In one embodiment, the thickness of the flame-retardant layer is 0.2 mm to 1.0 mm, and the thickness of the adhesive layer is 0.1 mm to 0.3 mm.

[0007] In one embodiment, the flame-retardant layer has elasticity.

[0008] In one embodiment, the shock-proof member further includes a buffer layer, and the buffer layer is connected between the flame-retardant layer and the adhesive layer.

[0009] In one embodiment, the fixed lug includes an end face, and a third surface and a fourth surface that are oppositely arranged. The end face is fixedly connected between the third surface and the fourth surface. The third surface and the fourth surface are respectively arranged along the length direction of the side frame. The shockproof member covers the third surface, the end face, and the fourth surface.

[0010] In one embodiment, the fixed lug further includes a first side face and a second side face that are oppositely arranged. The first side face and the second side face are respectively fixedly connected between the third surface and the fourth surface. The shockproof member covers the first side face and the second side face.

[0011] In one embodiment, the in-vehicle backlight module for preventing vibration and abnormal noise further includes a reflective film, a light guide plate, and an optical film. The reflective film is arranged on the bottom plate. The light guide plate is arranged on the reflective film. The optical film is arranged on the light guide plate.

[0012] In one embodiment, the in-vehicle backlight module for preventing vibration and abnormal noise further includes a light bar, and the light bar is fixedly connected to the first surface of the side frame.

[0013] The present utility model further relates to an in-vehicle display device, including the above-mentioned in-vehicle backlight module for preventing vibration and abnormal noise.

[0014] The lower frame of the in-vehicle backlight module of the present utility model is provided with a fixed lug connected to the vehicle frame. By fixedly connecting the shockproof member between the fixed lug and the vehicle frame, it is possible to prevent the in-vehicle backlight module from generating vibration and abnormal noise during driving, ensure that the in-vehicle backlight module can still operate stably under complex road conditions, reduce the impact and damage of vibration on the internal electronic components of the in-vehicle backlight module, extend the product life, and improve the driver's experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 is a schematic exploded view of the in-vehicle backlight module according to the first embodiment of the present utility model.

[0017] Figure 2 is a schematic side view of the lower frame according to the first embodiment of the present utility model.

[0018] Figure 3It is a schematic diagram of the partial structure at the fixed ear of the first embodiment of the present utility model.

[0019] Figure 4 It is a schematic diagram of the shockproof member of the first embodiment of the present utility model.

[0020] Figure 5 It is a schematic diagram of the shockproof member of another preferred embodiment of the present utility model.

[0021] Explanation of the reference numerals in the drawings: accommodation cavity - 101; lower frame - 11; bottom plate - 111; side frame - 112; second surface - 1122; fixed ear - 113; third surface - 1131; fourth surface - 1132; end face - 1133; shockproof member - 12; flame retardant layer - 121; adhesive layer - 122; buffer layer - 123; reflective film - 13; light guide plate - 14; diffusion film - 151; brightening film - 152; brightness enhancement film - 153; light bar - 16; middle frame - 17; foam adhesive - 18.

[0022] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0023] The following will describe in detail specific embodiments of the present utility model with reference to the accompanying drawings. 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 description of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0024] In the description of the present utility model, unless otherwise clearly defined and limited, terms such as "set", "installed", "connected" should be understood in a broad sense. For example, it 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. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations.

[0025] The orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of description and simplification of 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.

[0026] The terms "first", "second", "third", etc. are only used to distinguish components with similar attributes, rather than indicating or implying relative importance or a specific order.

[0027] The term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion. In addition to the elements listed, it may also include other elements not specifically listed.

[0028] As Figures 1 to 4 shown, the vehicle-mounted backlight module for preventing vibration and abnormal noise includes a lower frame 11 and a shock-proof member 12. The lower frame 11 includes a bottom plate 111 and a side frame 112 fixedly connected to the bottom plate 111. An accommodation cavity 101 is formed between the side frame 112 and the bottom plate 111. The side frame 112 includes a first surface and a second surface 1122 arranged opposite to each other. The first surface is arranged inside the accommodation cavity 101, and a plurality of fixing lugs 113 are provided on the second surface 1122. The fixing lugs 113 are used to connect the vehicle-mounted backlight module to the vehicle frame. The shock-proof member 12 is connected to the fixing lugs 113, and the shock-proof member 12 is arranged between the fixing lugs 113 and the vehicle frame. In this embodiment, the vehicle-mounted backlight module is a dual-screen or multi-screen vehicle-mounted backlight module. The length of the lower frame 11 is at least 1 m, and the fixing lugs 113 are arranged on the light-incident side of the vehicle-mounted backlight module.

[0029] The lower frame 11 of the vehicle-mounted backlight module of the present utility model is provided with fixing lugs 113 connected to the vehicle frame, and the shock-proof member 12 is fixedly connected between the fixing lugs 113 and the vehicle frame, which can prevent the vehicle-mounted backlight module from generating vibration and abnormal noise during driving, ensure that the vehicle-mounted backlight module can still operate stably under complex road conditions, reduce the impact and damage of vibration on the internal electronic components of the vehicle-mounted backlight module, extend the service life of the product, and improve the driving experience.

[0030] Preferably, the shock absorber 12 includes a flame retardant layer 121 and an adhesive layer 122, and the adhesive layer 122 is connected between the flame retardant layer 121 and the fixed ear 113. The thickness of the flame retardant layer 121 is 0.2 mm to 1.0 mm, preferably 0.2 mm, 0.5 mm or 1.0 mm, etc. The thickness of the adhesive layer 122 is 0.1 mm to 0.3 mm, preferably 0.1 mm, 0.2 mm or 0.3 mm, etc. The adhesive layer 122 is preferably a double-sided tape to ensure close fitting between the flame retardant layer 121 and the lower frame 11, and provide stable support and fixation for the flame retardant layer 121. In this embodiment, the flame retardant layer 121 is a FBF black special flame retardant non-woven fabric, which is a non-woven fabric. This material has excellent shock absorption performance and flame retardant characteristics. The flame retardant layer 121 has elasticity, can effectively absorb and disperse vibration energy, and reduce the generation of abnormal noise. The structure of the shock absorber 12 is simple, convenient for operators to operate, can solve the collision and abnormal noise phenomena caused by vibration between components during the vehicle assembly process, improve the seismic performance of the overall structure, improve the product quality and production efficiency, and reduce the product cost; the flame retardant characteristics of the shock absorber 12 can improve the fire safety of the in-vehicle backlight module and reduce the risk of fire. In addition, a modular design is adopted between the shock absorber 12 and the fixed ear 113, which is convenient for the production and assembly of the in-vehicle backlight module and subsequent maintenance.

[0031] In another preferred embodiment, as Figure 5 shown, the shock absorber 12 further includes a buffer layer 123, and the buffer layer 123 is connected between the flame retardant layer 121 and the adhesive layer 122. The buffer layer 123 is preferably rubber or silica gel, etc., but is not limited thereto.

[0032] As Figure 3 shown, the fixed ear 113 includes an end face 1133 and opposite third surfaces 1131 and fourth surfaces 1132. The end face 1133 is fixedly connected between the third surface 1131 and the fourth surface 1132. The third surface 1131 and the fourth surface 1132 are respectively arranged along the length direction of the side frame 112. The shock absorber 12 covers the third surface 1131, the end face 1133 and the fourth surface 1132; it can be understood that the shape of the shock absorber 12 attached to the fixed ear 113 can match the fixed ear 113; or the shock absorber 12 is preferably arc-shaped or irregular, etc., to better fit the fixed ear 113 and avoid the phenomenon that the shock absorber 12 does not fit well with the fixed ear 113.

[0033] As Figure 1As shown, the vehicle-mounted backlight module for preventing vibration and abnormal noise also includes a reflective film 13, a light guide plate 14, and an optical film. The reflective film 13 is arranged on the bottom plate 111, the light guide plate 14 is arranged on the reflective film 13, and the optical film is arranged on the light guide plate 14. The optical film includes a diffusion film 151, a light-enhancing film 152, and a brightness-enhancing film 153. The diffusion film 151 is arranged on the light guide plate 14, the brightness-enhancing film 152 is arranged on the diffusion film 151, and the brightness-enhancing film 153 is arranged on the brightness-enhancing film 152. The diffusion film 151 is fixedly connected to the light guide plate 14 by double-sided tape. The diffusion film 151, the brightness-enhancing film 152, and the brightness-enhancing film 153 can be fixedly connected by double-sided tape; or they can be positioned by means of a block and a slot, and then affixed and fixed by double-sided tape to increase the firmness of the connection between the films.

[0034] like Figure 1 As shown, the vehicle-mounted backlight module for preventing vibration and abnormal noise also includes a light bar 16, which is fixedly connected to the first surface of the side frame 112. The light bar 16 includes a flexible circuit board and multiple LED lights. The multiple LED lights are electrically connected to the flexible circuit board and are arranged along the length of the flexible circuit board. The flexible circuit board is fixed to the first surface of the side frame 112 using thermally conductive double-sided tape.

[0035] Preferably, the vehicle-mounted backlight module for preventing vibration and abnormal noise further includes a middle frame 17 and foam glue 18. The middle frame 17 is connected to the lower frame 11. The foam glue 18 is arranged on the middle frame 17 and is used to buffer and fix the display screen.

[0036] Second embodiment

[0037] The vehicle-mounted backlight module of this embodiment is substantially similar in structure to the vehicle-mounted backlight module of the first embodiment, except that the fixing structure between the shock-absorbing member 12 and the fixing lug 113 is different.

[0038] Specifically, the fixed ear 113 further includes a first side surface and a second side surface that are oppositely arranged. The first side surface and the second side surface are respectively fixedly connected between the third surface 1131 and the fourth surface 1132 . The shockproof component 12 covers the first side surface and the second side surface.

[0039] Preferably, the shock-absorbing member 12 is an integral structure.

[0040] In another preferred embodiment, the shock-absorbing component 12 is a split structure, that is, the shock-absorbing component 12 includes a first shock-absorbing section and a second shock-absorbing section, the first side surface and the third surface 1131 are arranged in the first shock-absorbing section, and the second side surface, the fourth surface 1132 and the end face 1133 are arranged in the second shock-absorbing section.

[0041] In another preferred embodiment, the shock absorber 12 has a split structure, that is, the shock absorber 12 includes a third shock-absorbing section and a fourth shock-absorbing section. The first side surface, the second side surface, the third surface 1131 and the fourth surface 1132 are provided on the third shock-absorbing section, and the end surface 1133 is provided on the fourth shock-absorbing section. Among them, the third shock-absorbing section is preferably strip-shaped, which is convenient for pasting the shock absorber 12.

[0042] The present invention also relates to a vehicle-mounted display device, including the above vehicle-mounted backlight module for preventing vibration and abnormal noise. The vehicle-mounted display device of the present invention is, for example, a high-end vehicle-mounted instrument, a vehicle-mounted central control display, a vehicle-mounted driving recorder, a vehicle-mounted DVD navigation, etc., but is not limited thereto.

[0043] The above are only the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An in-vehicle backlight module for preventing vibration abnormal noise, characterized in that It includes a lower frame (11) and a shockproof member (12). The lower frame (11) includes a bottom plate (111) and side frames (112) fixedly connected to the bottom plate (111). An accommodation cavity (101) is formed between the side frames (112) and the bottom plate (111). The side frames (112) include a first surface and a second surface (1122) arranged opposite to each other. The first surface is arranged inside the accommodation cavity (101), and a plurality of fixing lugs (113) are provided on the second surface (1122). The fixing lugs (113) are used to connect the vehicle-mounted backlight module to the vehicle frame. The shockproof member (12) is connected to the fixing lugs (113), and the shockproof member (12) is arranged between the fixing lugs (113) and the vehicle frame.

2. The vehicle-mounted backlight module for preventing vibration and abnormal noise according to claim 1, wherein The shockproof member (12) includes a flame-retardant layer (121) and an adhesive layer (122), and the adhesive layer (122) is connected between the flame-retardant layer (121) and the fixing lugs (113).

3. The vehicle-mounted backlight module for preventing vibration and abnormal noise according to claim 2, characterized in that, The thickness of the flame-retardant layer (121) is 0.2 mm to 1.0 mm, and the thickness of the adhesive layer (122) is 0.1 mm to 0.3 mm.

4. The in-vehicle backlight module for preventing vibration and abnormal noise according to claim 3, wherein, The flame-retardant layer (121) has elasticity.

5. The in-vehicle backlight module for preventing vibration and abnormal noise as claimed in claim 3, wherein The shockproof member (12) further includes a buffer layer (123), and the buffer layer (123) is connected between the flame-retardant layer (121) and the adhesive layer (122).

6. The vehicle-mounted backlight module for preventing vibration and abnormal noise according to claim 3, characterized in that The fixing lug (113) includes an end face (1133) and a third surface (1131) and a fourth surface (1132) arranged opposite to each other. The end face (1133) is fixedly connected between the third surface (1131) and the fourth surface (1132). The third surface (1131) and the fourth surface (1132) are respectively arranged along the length direction of the side frame (112). The shockproof member (12) is arranged to cover the third surface (1131), the end face (1133) and the fourth surface (1132).

7. The vehicle-mounted backlight module for preventing vibration and abnormal noise according to claim 6, characterized in that, The fixing lug (113) further includes a first side face and a second side face arranged opposite to each other. The first side face and the second side face are respectively fixedly connected between the third surface (1131) and the fourth surface (1132). The shockproof member (12) is arranged to cover the first side face and the second side face.

8. The vehicle-mounted backlight module for preventing vibration and abnormal noise according to any one of claims 1 to 7, characterized in that, The vehicle-mounted backlight module for preventing vibration and abnormal noise further includes a reflective film (13), a light guide plate (14) and optical film sheets. The reflective film (13) is arranged on the bottom plate (111), the light guide plate (14) is arranged on the reflective film (13), and the optical film sheets are arranged on the light guide plate (14).

9. The vehicle-mounted backlight module for preventing vibration and abnormal noise according to claim 8, wherein, The vehicle-mounted backlight module for preventing vibration and abnormal noise further includes a light bar (16), and the light bar (16) is fixedly connected to the first surface of the side frame (112).

10. A vehicle-mounted display device, characterized in that, It includes the vehicle-mounted backlight module for preventing vibration and abnormal noise according to any one of claims 1 to 9.

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