Backlight structure of display screen of CD (Compact Disc) player

Abstract

The utility model discloses a CD player display screen backlight structure which comprises a backlight support, the backlight support is installed on a circuit board, a cavity used for installing a display screen and a backlight sheet is arranged in the backlight support, and one end, used for wiring, of the backlight sheet extends outwards to form an extension part. An extension cover is arranged at one end of the backlight bracket, an extension cavity is formed in the extension cover and is communicated with the cavity, and the extension part extends into the extension cavity and is covered by the extension cover after the backlight sheet is arranged in the cavity; a supporting edge is arranged in the middle of the inner wall of at least one side of the backlight support and supports the edge of the display screen. Therefore, an EVA sheet does not need to be used for covering, the cost is reduced, the assembly operation is more convenient, gaps are eliminated, and dust can be prevented from entering. In addition, the display screen is erected through the supporting edge, when the backlight sheet does not need to be installed, a support does not need to be additionally arranged in the cavity below the display screen, and therefore cost can be further reduced, and the assembling procedure is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic products, in particular to a display screen backlight structure of a CD player. Background Art

[0002] CD players were once very popular portable audio-visual devices. With the development of Bluetooth technology, traditional CD players have gained new popularity. In order to provide a light display function, CD players are usually obtained by setting a display screen. The display screen is installed through a backlight bracket, and the display effect is generally achieved by providing backlight through a backlight sheet installed in the backlight bracket. However, the current display backlight structure has the following problems. First, the backlight sheet needs to be extended for wiring. The extended section and the light are exposed outside the backlight bracket, which will cause excessive light leakage. At present, black EVA sheets are generally added to block light, and the extended part of the backlight sheet is covered with the EVA sheet to prevent light leakage. This will not only make the process more complicated, the assembly operation more cumbersome, and the cost higher, but also because there is a gap between the EVA sheet and the side wall of the backlight bracket, it is easy to get dust, which may have an adverse effect on the normal operation of the product; second, because the width of the display screen and the backlight sheet is the same, when some products do not need backlight, a cavity will be formed under the display screen, causing the display screen to be suspended. The traditional practice is generally to set a bracket in the cavity to support the display screen, which will significantly increase the cost. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a CD player display screen backlight structure which has simple structure, more reasonable design, more convenient assembly operation, lower cost and can prevent dust from entering.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a backlight structure of a CD player display screen, including a backlight bracket, which is installed on a circuit board, and a cavity for installing a display screen and a backlight sheet in the backlight bracket, and one end of the backlight sheet used for wiring extends outward to form an extension portion, and after the backlight sheet is installed in the backlight bracket, the extension portion extends out from one end of the cavity to the outside, characterized in that: an extension cover matching the extension portion is provided at one end of the backlight bracket, an extension cavity is formed in the extension cover, the extension cavity and the cavity are connected to each other, and after the backlight sheet is installed in the cavity, the extension portion extends into the extension cavity and is covered by the extension cover; a supporting edge is provided at the middle position of the inner wall of at least one side of the backlight bracket, and after the backlight sheet is installed in the cavity, its surface is flush with the bottom surface of the supporting edge, and the edge of the display screen is supported by the supporting edge.

[0005] Furthermore, the extension cover and the backlight bracket are an integrated structure, and the extension cover extends outward from one end of the backlight bracket.

[0006] Furthermore, a first fixing foot and a second fixing foot are respectively provided on the outer side of the extension cover and the other end of the backlight bracket, and fixing holes are respectively provided on the circuit board at positions corresponding to the two fixing feet. The first fixing foot and the second fixing foot are respectively inserted into the corresponding fixing holes to assemble and fix the backlight bracket to the circuit board.

[0007] Furthermore, at least one positioning post is arranged at the bottom of the backlight bracket, and a positioning hole is arranged on the circuit board at a position corresponding to the positioning post, and the backlight bracket is positioned by inserting the positioning post into the positioning hole.

[0008] Furthermore, the first fixing leg and the extension cover are an integrated structure, and the top end of the first fixing leg extends from the outer end of the extension cover and then bends and extends toward the circuit board.

[0009] Furthermore, a bottom plate is arranged at the bottom of the backlight bracket, and the bottom plate forms the bottom surface of the cavity. After the backlight sheet is installed in the cavity, it is supported by the bottom plate.

[0010] Furthermore, a groove is provided on the top of at least one inner wall of the backlight bracket, and the groove is connected to the side of the display screen.

[0011] The utility model provides an extension cover matched with the extension part of the backlight sheet at one end of the backlight bracket, and the extension cover completely covers the extension part, and no EVA sheet is needed to cover it. This not only saves the EVA sheet, reduces the cost, makes the assembly operation more convenient, but also eliminates the gap to prevent dust from entering. In addition, by providing a support edge on the inner side wall of the backlight bracket for mounting the display screen, when the backlight sheet does not need to be installed, there is no need to additionally provide a bracket in the chamber below the display screen, thereby further reducing the cost and simplifying the assembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the utility model from another angle;

[0014] Figure 3 It is a schematic longitudinal section diagram of the utility model;

[0015] Figure 4 It is a cross-sectional schematic diagram of the utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the utility model after the display screen is removed;

[0017] Figure 6 This is a schematic diagram of the structure of the utility model after the display screen and backlight sheet are removed;

[0018] Figure 7It is a cross-sectional schematic diagram of the utility model after the display screen and the backlight sheet are removed.

[0019] In the figure, 1 is a backlight bracket, 11 is a base plate, 12 is an extension cover, 13 is a support edge, 14 is a first fixed foot, 15 is a second fixed foot, 16 is a groove, 17 is a positioning column, 2 is a circuit board, 21 is a fixing hole, 3 is a display screen, 4 is a backlight sheet, 41 is an extension part, 5 is a cavity, and 51 is an extension cavity. DETAILED DESCRIPTION

[0020] In this embodiment, refer to Figure 1-Figure 7 The CD player display screen backlight structure includes a backlight bracket 1, which is mounted on a circuit board 2. A cavity 5 for mounting a display screen 3 and a backlight sheet 4 is provided in the backlight bracket 1. One end of the backlight sheet 4 for wiring extends outward to form an extension portion 41. After the backlight sheet 4 is installed in the backlight bracket 1, the extension portion 41 extends outward from one end of the cavity 5; an extension cover 12 matching the extension portion 41 is provided at one end of the backlight bracket 1, and an extension cavity 51 is formed in the extension cover 12. The extension cavity 51 is communicated with the cavity 5. After the backlight sheet 4 is installed in the cavity 5, the extension portion 41 extends into the extension cavity 51 and is covered by the extension cover 12, so that light and dust can be isolated; a support edge 13 is provided at the middle position of the inner wall of at least one side (such as the front and rear sides) of the backlight bracket 1. After the backlight sheet 4 is installed in the cavity 5, its surface is flush with the bottom surface of the support edge 13, and the edge of the display screen 3 is supported by the support edge 13, so that the backlight sheet 4 is no longer needed to support the display screen 3.

[0021] The extension cover 12 is an integral structure with the backlight bracket 1 , and extends outward from one end of the backlight bracket 1 , and is integrally formed by plastic injection molding.

[0022] The outer side of the extension cover 12 and the other end of the backlight bracket 1 are respectively provided with a first fixing foot 14 and a second fixing foot 15, and the positions corresponding to the two fixing feet are respectively provided with fixing holes 21 on the circuit board 2, and the backlight bracket 1 and the circuit board 2 are assembled and fixed by inserting the first fixing foot 14 and the second fixing foot 15 into the corresponding fixing holes 21.

[0023] At least one positioning post 17 is arranged at the bottom of the backlight bracket 1, and a positioning hole is arranged on the circuit board 2 at a position corresponding to the positioning post 17. The backlight bracket 1 is positioned by inserting the positioning post 17 into the positioning hole, which is conducive to improving the positioning speed when the backlight bracket 1 is installed.

[0024] The first fixing leg 14 and the extension cover 12 are an integral structure. The top end of the first fixing leg 14 extends from the outer end of the extension cover 12 and then bends and extends toward the circuit board 2, so it has a certain elasticity.

[0025] A bottom plate 11 is disposed at the bottom of the backlight support 1 , and the bottom plate 11 forms the bottom surface of the cavity 5 . After the backlight sheet 4 is loaded into the cavity 5 , it is supported by the bottom plate 11 .

[0026] A groove 16 is provided on the top of at least one inner wall of the backlight bracket 1 (eg, a side close to the extension cover 12 ), and the groove 16 is connected to the side of the display screen 3 , so that it is convenient for fingers to insert to install or remove the display screen 3 .

[0027] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. A CD player display screen backlight structure, comprising a backlight bracket, the backlight bracket being mounted on a circuit board, the backlight bracket having a cavity for mounting a display screen and a backlight sheet, one end of the backlight sheet for wiring extending outward to form an extension portion, and the extension portion of the backlight sheet extending outward from one end of the cavity after the backlight sheet is mounted in the backlight bracket, characterized in that: An extension cover matching the extension part is arranged at one end of the backlight bracket, an extension cavity is formed in the extension cover, the extension cavity is communicated with the cavity, after the backlight sheet is loaded into the cavity, its extension part extends into the extension cavity and is covered by the extension cover; a supporting edge is arranged at the middle position of the inner wall of at least one side of the backlight bracket, and the edge of the display screen is supported by the supporting edge.

2. The CD player display screen backlight structure according to claim 1, characterized in that: The extension cover is an integrated structure with the backlight bracket and extends outwards from one end of the backlight bracket.

3. The CD player display screen backlight structure according to claim 1, characterized in that: The outer side of the extension cover and the other end of the backlight bracket are respectively provided with a first fixing foot and a second fixing foot, and the positions corresponding to the two fixing feet are respectively provided with fixing holes on the circuit board. The backlight bracket is assembled and fixed to the circuit board by inserting the first fixing foot and the second fixing foot into the corresponding fixing holes.

4. The CD player display screen backlight structure according to claim 1, characterized in that: At least one positioning post is arranged at the bottom of the backlight bracket, and a positioning hole is arranged on the circuit board at a position corresponding to the positioning post, and the backlight bracket is positioned by inserting the positioning post into the positioning hole.

5. The CD player display screen backlight structure according to claim 3, characterized in that: The first fixing leg and the extension cover are an integrated structure, and the top end of the first fixing leg extends from the outer end of the extension cover and then bends and extends toward the circuit board.

6. The CD player display screen backlight structure according to claim 1, characterized in that: A bottom plate is arranged at the bottom of the backlight support, and the bottom plate forms the bottom surface of the cavity. After the backlight sheet is installed in the cavity, it is supported by the bottom plate.

7. The CD player display screen backlight structure according to claim 1, characterized in that: A groove is arranged on the top of at least one inner wall of the backlight bracket, and the groove is connected to the side of the display screen.

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