Central control display screen backlight module easy to assemble

Abstract

The utility model discloses a central control display screen backlight module easy to assemble. The central control display screen backlight module comprises a bottom shell with an opening in the top and a backlight assembly. The bottom shell comprises a bottom plate and a peripheral side plate, the periphery of the bottom plate is downwards provided with a U-shaped groove, a mounting plate is fixed in the U-shaped groove, the mounting plate comprises a transverse plate and longitudinal plates connected to the two ends of the transverse plate, and the inner sides of the two longitudinal plates are provided with a first positioning part and a second positioning part respectively; the backlight assembly comprises a light bar, a light intensifying film set, a light guide plate, a reflecting film and a foam rubber mat, the light bar is fixed to the inner side of the transverse plate, the top of the light guide plate abuts against the silica gel mat, a positioning convex part is arranged at the bottom of the light guide plate in a protruding mode, and correspondingly, a positioning concave part matched with the positioning convex part is arranged on the bottom plate in a concave mode and fixed in the positioning concave part. The brightness enhancement film set is arranged on the top of the light guide plate and provided with a first bayonet matched with the first positioning part and a second bayonet matched with the second positioning part. And the mounting plate is fixed in the U-shaped groove, so that the lamp strip is convenient to assemble.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field technology of central control display screen, especially to an easily-assembled central control display screen backlight module. BACKGROUND

[0002] At the instrument panel of the automobile, generally installs the central control display screen, and the central control display screen can visually display the state of various functions of the vehicle in the form of image or text, such as for navigation, reversing image, Bluetooth connection etc.

[0003] In the prior art, the central control display screen comprises a bottom shell, a light bar, a light guide plate, a light enhancement film and a reflective film, and the overall thickness of the bottom shell is relatively thin, so that the operation space is small when the light bar is assembled on the side wall of the bottom shell, which brings inconvenience to the installation of the light bar on the bottom shell, and the side of the light guide plate is abutted with the bottom shell through a silica gel pad to provide an expansion space for the expansion of the light guide plate, and the light guide plate is fixed in the bottom shell through this mode, and under this structure, the side of the light guide plate close to the light bar needs to be provided with an avoiding groove for avoiding the light bar, and the top of the light guide plate needs to be provided with a positioning part for positioning the light enhancement film, which leads to the complication of the processing of the light guide plate and increases the manufacturing cost of the light guide plate, so how to improve the assembly efficiency of the central control display screen is the focus of research in the industry.

[0004] Therefore, it is necessary to design a new technical scheme to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] Therefore, the utility model provides an easily-assembled central control display screen backlight module, which is characterized in that a U-shaped groove is formed downward around the bottom plate, the mounting plate comprises a horizontal plate and longitudinal plates connected to the two ends of the horizontal plate, the inner sides of the two longitudinal plates are respectively provided with first and second positioning parts, the horizontal plate can be used for mounting the light bar, and the light bar is directly fixed in the U-shaped groove after being mounted, so that the assembly of the light bar is facilitated, the first and second positioning parts can be used for positioning the light enhancement film group, the positioning of the light guide plate is not displaced under the condition of expansion, an avoiding groove for avoiding the light bar is not additionally arranged, the structure of the light guide plate is simplified, the structure design is ingenious, the bottom of the first and second positioning parts is provided with a silica gel pad, and the light guide plate is prevented from being damaged by knocking.

[0006] To achieve the above object, the utility model adopts the following technical scheme:

[0007] An easily-assembled central control display screen backlight module comprises a top-opened bottom shell and a backlight assembly arranged in the bottom shell.

[0008] The bottom shell comprises a bottom plate and a peripheral side plate arranged at the top peripheral edge of the bottom plate, the peripheral edge of the bottom plate is downwardly provided with a U-shaped groove, a mounting plate is fixed in the U-shaped groove, the mounting plate comprises a transverse plate and longitudinal plates connected to both ends of the transverse plate, the inner sides of the two longitudinal plates are respectively provided with a first positioning part and a second positioning part, the first positioning part and the second positioning part are arranged in a staggered manner, the bottoms of the first positioning part and the second positioning part are provided with silica gel pads, and the outer side of the mounting plate abuts against the peripheral side plate.

[0009] The backlight assembly comprises a lamp strip, a light enhancement film set, a light guide plate, a reflective film and a foam rubber pad, the lamp strip is fixed to the inner side of the transverse plate, the light guide plate has a gap with the longitudinal plate, the top of the light guide plate abuts against the silica gel pad, the bottom of the light guide plate is provided with a positioning protrusion, correspondingly, the bottom plate is recessed with a positioning recess matched with the positioning protrusion, the positioning protrusion is fixed in the positioning recess, the reflective film and the foam rubber pad are sequentially arranged on the bottom plate of the light guide plate from top to bottom, and are both provided with an avoiding opening for avoiding the positioning protrusion, and the light enhancement film set is arranged on the top of the light guide plate and is provided with a first clamping opening matched with the first positioning part and a second clamping opening matched with the second positioning part.

[0010] As a preferred scheme, the mounting plate and the U-shaped groove, the lamp strip and the mounting plate, and the positioning protrusion and the positioning recess are all fixed by heat-conducting glue.

[0011] As a preferred scheme, the bottom shell and the mounting plate are both made of aluminum.

[0012] As a preferred scheme, the longitudinal plates are bent and formed from the transverse plate, and the first positioning part and the second positioning part are both stamped and formed from the corresponding longitudinal plates, so that the mounting plate is convenient to manufacture.

[0013] As a preferred scheme, the light enhancement film set comprises a diffusion film, a rear light enhancement film, a front light enhancement film and a DBEF film which are sequentially stacked from bottom to top.

[0014] As a preferred scheme, the bottom peripheral edge of the positioning protrusion and the bottom peripheral edge of the positioning recess are both provided with a rounded edge.

[0015] As a preferred scheme, the top peripheral edge of the reflective film is upwardly extended with an extension edge, the top of the extension edge is flush with the top of the light guide plate, and the extension edge is open on the side corresponding to the lamp strip.

[0016] As a preferred scheme, the top of the bottom shell is further connected with an annular middle shell, and the annular middle shell covers the lamp strip, the first positioning part and the second positioning part.

[0017] As a preferred scheme, the annular middle shell is provided with a buckle hole, and correspondingly, the outer periphery of the peripheral side plate is provided with a buckle part matched with the buckle hole, and the annular middle shell is fixed on the bottom shell through cooperation of the buckle hole and the buckle part.

[0018] As a preferred scheme, the annular middle shell is made of aluminum.

[0019] The utility model discloses have obvious advantages and beneficial effects compared with prior art, specifically speaking, from the above technical scheme can know:

[0020] Its main is, through setting up U -shaped groove to the bottom plate's circumference downward, the mounting plate includes horizontal plate and the longitudinal plate connected to the both ends of horizontal plate, and the inner side of two longitudinal plates is provided with first positioning part and second positioning part respectively, and horizontal plate can install the light bar, directly fixed in U -shaped groove after installing, the assembly of light bar is convenient, and, first positioning part and second positioning part can be positioned for light enhancement film group, cooperate the setting of positioning convex part and positioning recess, make light guide plate not shift in the inflation condition, need not extra set up for light bar to avoid the avoiding groove, simplify the structure of light guide plate, structural design is ingenious, and, the bottom of first positioning part and second positioning part is provided with silica gel pad, can prevent knock damage light guide plate.

[0021] In order to more clearly set forth the structural features and efficacy of the utility model, below, combining with the specific embodiment and the drawing to the utility model is explained in detail. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the three-dimensional schematic diagram of the preferred embodiment of the utility model;

[0023] Figure 2 It is the sectional view schematic diagram of the preferred embodiment of the utility model;

[0024] Figure 3 It is another sectional view schematic diagram of the preferred embodiment of the utility model;

[0025] Figure 4 It is the installation schematic diagram of the mounting plate of the preferred embodiment of the utility model.

[0026] EXPLANATION OF THE DRAWINGS:

[0027] 10, bottom shell 11, bottom plate

[0028] 111, U-shaped groove 112, positioning recess

[0029] 12, peripheral side plate 121, buckle part

[0030] 20, backlight assembly 21, light bar

[0031] 22, light enhancement film group 221, first clamping port

[0032] 222, diffusion film 223, rear brightness enhancement film

[0033] 224, front brightness enhancement film 225, DBEF film

[0034] 23, light guide plate 231, positioning convex part

[0035] 24, reflection film 241, extension edge

[0036] 25, foam rubber pad 201, avoiding opening

[0037] 30, mounting plate 31, transverse plate

[0038] 32, longitudinal plate 321, first positioning part

[0039] 40, silica gel pad 50, annular middle shell

[0040] 51, buckle hole 60, heat-conducting glue

[0041] 70, rounded edge. DETAILED DESCRIPTION

[0042] First of all, it needs to be pointed out that in the description of the utility model, the terms "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0043] Please refer to Figures 1 to 4 , which shows the specific structure of the preferred embodiment of the utility model, comprising a bottom shell 10 with an open top and a backlight assembly 20 arranged in the bottom shell 10.

[0044] The bottom shell 10 comprises a bottom plate 11 and a peripheral side plate 12 arranged on the top periphery of the bottom plate 11, the periphery of the bottom plate 11 is downwardly provided with a U-shaped groove 111, the mounting plate 30 is fixed in the U-shaped groove 111, the mounting plate 30 comprises a transverse plate 31 and longitudinal plates 32 connected to both ends of the transverse plate 31, the inner sides of the two longitudinal plates 32 are respectively provided with first positioning parts 321 and second positioning parts (not shown in the figure), the first positioning parts 321 and the second positioning parts are arranged in a staggered manner, the bottoms of the first positioning parts 321 and the second positioning parts are provided with silica gel pads 40, and the outer side of the mounting plate 30 abuts against the peripheral side plate 12.

[0045] Refer to Figure 1 , Figure 2 and Figure 4As shown, the top of the bottom shell 10 is also connected with an annular middle shell 50, the annular middle shell 50 covers the first positioning part 321, the second positioning part; the annular middle shell 50 is provided with a buckle hole 51, and correspondingly, the outer periphery of the circumferential side plate 12 is provided with a buckle part 121 matched with the buckle hole 51, and the annular middle shell 50 is fixed on the bottom shell 10 through the cooperation of the buckle hole 51 and the buckle part 121;

[0046] Preferably, the mounting plate 30 and the U-shaped groove 111 are fixed through the heat-conducting glue 60; in the embodiment, the longitudinal plate 32 is formed by bending the transverse plate 31, and the first positioning part 321 and the second positioning part are both formed by stamping the corresponding longitudinal plate 32, so that the mounting plate 30 is convenient to manufacture, and the bottom shell 10, the mounting plate 30 and the annular middle shell 50 are all made of aluminum.

[0047] The backlight assembly 20 comprises a light bar 21, a light enhancement film set 22, a light guide plate 23, a reflective film 24 and a foam rubber pad 25, the light bar 21 is fixed to the inner side of the transverse plate 31, the light guide plate 23 has a gap between the longitudinal plate 32, the top of the light guide plate 23 abuts against the silica gel pad 40, the bottom of the light guide plate 23 is provided with a positioning protrusion 231, correspondingly, the bottom plate 11 is recessed with a positioning recess 112 matched with the positioning protrusion 231, the positioning protrusion 231 is fixed in the positioning recess 112, the reflective film 24 and the foam rubber pad 25 are sequentially arranged on the bottom plate 11 of the light guide plate 23 from top to bottom, and are both provided with an avoiding port 201 for avoiding the positioning protrusion 231, the light enhancement film set 22 is arranged on the top of the light guide plate 23 and is provided with a first clamping port 221 matched with the first positioning part 321 and a second clamping port matched with the second positioning part;

[0048] Referring to Figure 2 and Figure 3 As shown, specifically, the light enhancement film set 22 is sequentially stacked with a diffusion film 222, a rear light enhancement film 223, a front light enhancement film 224 and a DBEF film 225 from bottom to top; the top periphery of the reflective film 24 extends upwardly with an extension edge 241, the top of the extension edge 241 is flush with the top of the light guide plate 23, and the extension edge is provided with an opening on the side corresponding to the light bar 21;

[0049] Preferably, the bottom periphery of the positioning protrusion 231 and the bottom periphery of the positioning recess 112 are both provided with a rounded edge 70; the positioning protrusion 231 and the positioning recess 112 and the light bar 21 and the mounting plate 30 are all fixed through the heat-conducting glue 60.

[0050] The design emphasis of the utility model lies in:

[0051] It is mainly that the U-shaped groove is opened downward at the periphery of the bottom plate, the mounting plate comprises a transverse plate and longitudinal plates connected to both ends of the transverse plate, the inner sides of the two longitudinal plates are respectively provided with first positioning parts and second positioning parts, the transverse plate can be used for mounting the light bar, and after being mounted, is directly fixed in the U-shaped groove, so that the assembly of the light bar is facilitated, the first positioning parts and the second positioning parts can be used for positioning the light enhancement film group, the setting of the positioning convex parts and the positioning concave parts makes the light guide plate not displace in the expansion condition, an avoiding groove for avoiding the light bar is not additionally arranged, the structure of the light guide plate is simplified, the structure design is ingenious, and the bottom of the first positioning part and the second positioning part is provided with a silica gel pad, so that the light guide plate is prevented from being damaged by knocking.

[0052] The above is only a preferred embodiment of the present application, and does not limit the technical scope of the present application, so any slight modification, equivalent change and modification made according to the technical essence of the present application to the above embodiment still belongs to the technical scheme of the present application.

Claims

1. An easily-assembled center control display screen backlight module, comprising a top-open bottom shell and a backlight assembly arranged in the bottom shell; characterized in that: the bottom shell comprises a bottom plate and a peripheral side plate arranged at the top peripheral edge of the bottom plate, the peripheral edge of the bottom plate is downwardly provided with a U-shaped groove, a mounting plate is fixed in the U-shaped groove, the mounting plate comprises a transverse plate and longitudinal plates connected to both ends of the transverse plate, the inner sides of the two longitudinal plates are respectively provided with a first positioning part and a second positioning part, the first positioning part and the second positioning part are arranged in a staggered manner, the bottoms of the first positioning part and the second positioning part are both provided with a silica gel pad, and the outer side of the mounting plate abuts against the peripheral side plate; the backlight assembly comprises a light bar, a light enhancement film set, a light guide plate, a reflective film and a foam rubber pad, the light bar is fixed to the inner side of the transverse plate, the light guide plate has a gap with the longitudinal plate, the top of the light guide plate abuts against the silica gel pad, the bottom of the light guide plate is provided with a positioning protrusion, correspondingly, the bottom plate is recessed with a positioning recess matched with the positioning protrusion, the positioning protrusion is fixed in the positioning recess, the reflective film and the foam rubber pad are sequentially arranged on the bottom plate of the light guide plate from top to bottom, and are both provided with an avoidance opening for avoiding the positioning protrusion, and the light enhancement film set is arranged on the top of the light guide plate and is provided with a first clamping opening matched with the first positioning part and a second clamping opening matched with the second positioning part.

2. The easily-assembled center control display screen back light module of claim 1, wherein: The mounting plate and the U-shaped groove, the light bar and the mounting plate, and the positioning protrusion and the positioning recess are all fixed by heat-conducting glue.

3. The easily-assembled center stack display backlight module of claim 1, wherein: The bottom shell and the mounting plate are both made of aluminum.

4. The easily-assembled center stack display backlight module of claim 1, wherein: The longitudinal plates are formed by bending the transverse plate, and the first positioning part and the second positioning part are formed by stamping the corresponding longitudinal plates.

5. The easily assembled center control display screen back light module of claim 1, wherein: The light enhancement film set is sequentially stacked from bottom to top with a diffusion film, a rear light enhancement film, a front light enhancement film and a DBEF film.

6. The easily assembled center control display screen back light module of claim 1, wherein: The bottom peripheral edge of the positioning protrusion and the bottom peripheral edge of the positioning recess are both provided with a rounded edge.

7. The easily assembled center control display screen back light module of claim 1, wherein: The top peripheral edge of the reflective film is upwardly extended with an extension edge, the top of the extension edge is flush with the top of the light guide plate, and the extension edge is open on the side corresponding to the light bar.

8. The easily assembled center control display screen back light module of claim 1, wherein: The top of the bottom shell is further connected with a ring-shaped middle shell, the ring-shaped middle shell covers the light bar, the first positioning part and the second positioning part.

9. The easily assembled center control display screen back light module of claim 8, wherein: A buckle hole is arranged on the ring-shaped middle shell, correspondingly, the outer periphery of the peripheral side plate is provided with a buckle part matched with the buckle hole, and the ring-shaped middle shell is fixed on the bottom shell through the cooperation of the buckle hole and the buckle part.

10. The easily assembled center control display screen back light module of claim 8, wherein: The ring-shaped middle shell is made of aluminum.

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