Backlight four-corner shadow structure of direct type display

Abstract

The invention discloses a direct type display backlight four-corner shadow structure which comprises a display body, a backlight plate is fixedly connected to the rear end of the display body, a sliding strip is fixedly connected to the rear end of the backlight plate, a mounting frame is slidably connected to the outer side of the sliding strip, and an LED lamp is mounted at the rear end of the mounting frame. And a moving groove is formed in one end of the sliding strip, a sliding block is slidably connected to the inner side of the moving groove, and a mounting strip is fixedly connected to one end of the mounting frame. According to the backlight four-corner shadow structure of the direct type display, the positions of the LED lamps and the design of the corners of the backlight plate are optimized, light emitted by the LED lamps is fully transmitted into the four corners of the display body, four-corner shadows are effectively eliminated, the overall brightness uniformity is improved, and the backlight four-corner shadow structure of the direct type display has the advantages of being simple in structure and convenient to use. Meanwhile, a right-angle structure at the corner of the backlight plate is changed into an arc-angle structure, so that the transition of the corner of the backlight plate is more natural, and the appearance vision of the display main body is smoother and thinner.

Description

Technical Field

[0001] The invention relates to the technical field of displays, and in particular to a backlight four-corner shadow structure of a direct-type display. Background Art

[0002] As we all know, the liquid crystal panel (Open Cell) of the liquid crystal display is a non-luminous display element. It does not emit light by itself. A uniform surface light source needs to be set on its back so that users can see the displayed image content. The backlight is such a surface light source, and the light bar is the light-emitting element of the backlight. The light emitted by the light bar is processed by the plate and membrane in the backlight cavity to form a uniform and continuous surface light source through light guiding, focusing, refraction, reflection, scattering, etc.

[0003] The traditional display backlight four-corner shadow structure has some disadvantages. For example, when in use, due to structural limitations, the distance from the LED at the edge of the backplane to the edge of the backplane is smaller than the distance from the LED to the corner of the backplane. Therefore, the light emitted by the LED cannot be fully transmitted to the farther corners, resulting in the brightness of the four corners being much lower than the brightness of other areas. The general direct-down light bar adopts a rectangular PCB. In this way, the distance from the LED at the four corners of the backlight to the edge of the backplane and the distance to the corners is larger, and there is less light in the corner area of ​​the four corners. Therefore, a solution that can alleviate the above problems is urgently needed. Summary of the invention

[0004] The main purpose of the present invention is to provide a four-corner shadow structure for a direct-type display backlight, which can effectively solve the problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is: A four-corner shadow structure for a direct-down display backlight comprises a display body, a backlight panel is fixedly connected to the rear end of the display body, a sliding bar is fixedly connected to the rear end of the backlight panel, a mounting frame is slidably connected to the outer side of the sliding bar, an LED lamp is mounted on the rear end of the mounting frame, a movable groove is provided at one end of the sliding bar, a sliding block is slidably connected to the inner side of the movable groove, a mounting bar is fixedly connected to one end of the mounting frame, and a limiting plate is fixedly connected to the side of the rear end of the backlight panel close to the backlight panel.

[0006] Preferably, the internal threads of the mounting bar are connected with screws, and the four corners of the backlight panel are all opened into arc shapes.

[0007] Preferably, there are four groups of the sliding bars, and the four groups of the sliding bars are vertically distributed at the rear end of the backlight panel, and one end of the sliding block is fixedly connected to the inner wall of the mounting frame.

[0008] Preferably, there are multiple groups of mounting frames and LED lamps, and two groups of mounting frames are distributed outside each group of sliding bars.

[0009] Preferably, the distance between the two groups of mounting frames outside the two middle groups of sliding bars is smaller than the distance between the two groups of mounting frames outside the two outer groups of sliding bars.

[0010] Preferably, the mounting strip is located at the rear side of the limiting plate, the screw extends to the inside of the limiting plate, and the screw is threadedly connected to the limiting plate.

[0011] Compared with the prior art, the present invention has the following beneficial effects: By optimizing the position of the LED lights and the design of the backlight panel corners, the light emitted by the LED lights is fully spread to the four corners of the display body. Compared with the traditional direct-down backlight, it effectively eliminates the shadows in the four corners, improves the overall brightness uniformity, and greatly improves the display effect and taste of the picture. At the same time, the right-angle structure at the corner of the backlight panel is changed to an arc-angle structure, making the transition of the backlight panel corner more natural and making the appearance of the display body more rounded and slim. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ; Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ; Figure 3 The overall structure of the present invention is shown in FIG. Figure 3 ; Figure 4 It is a schematic diagram of the local structure of the present invention.

[0013] In the figure: 1. display body; 2. backlight panel; 3. sliding bar; 4. mounting bracket; 5. LED light; 6. moving slot; 7. sliding block; 8. mounting bar; 9. limiting plate; 10. screw. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0015] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are relative relationships of directions or positions, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0016] See also Figure 1-4An embodiment of the present invention is: a four-corner shadow structure of a direct-type display backlight, comprising a display body 1, a backlight panel 2 is fixedly connected to the rear end of the display body 1, a sliding bar 3 is fixedly connected to the rear end of the backlight panel 2, a mounting bracket 4 is slidably connected to the outer side of the sliding bar 3, an LED lamp 5 is installed at the rear end of the mounting bracket 4, a moving groove 6 is opened at one end of the sliding bar 3, a sliding block 7 is slidably connected to the inner side of the moving groove 6, a mounting bar 8 is fixedly connected to one end of the mounting bracket 4, and a limiting plate 9 is fixedly connected to the side of the rear end of the backlight panel 2 close to the backlight panel 2.

[0017] The internal thread of the mounting strip 8 is connected with a screw 10, the four corners of the backlight panel 2 are opened into an arc shape, there are four groups of sliding bars 3, and the four groups of sliding bars 3 are vertically distributed at the rear end of the backlight panel 2. One end of the sliding block 7 is fixedly connected to the inner wall of the mounting frame 4. There are multiple groups of mounting frames 4 and LED lights 5, and two groups of mounting frames 4 are distributed on the outside of each group of sliding bars 3.

[0018] When in use, push the mounting frame 4 to make the mounting frame 4 slide along the sliding bar 3, and make the mounting frame 4 drive the sliding block 7 to slide in the inner side of the moving groove 6, so that the mounting frame 4 moves upward, and the mounting frame 4 drives the LED lamp 5 to move, and makes the LED lamp 5 closer to the corner of the display body 1, and then push another set of mounting frames 4 to make another set of mounting frames 4 slide along another set of sliding bars 3, and adjust the distance between the two sets of mounting frames 4 outside the other set of sliding bars 3 to be smaller than the distance between the two sets of mounting frames 4 outside the first set of sliding bars 3, when the LED lamp 5 is turned on, the LED lamp 5 emits light outward, and by sliding the mounting frame 4 on the outer side of the sliding bar 3, the mounting frame 4 drives the LED lamp 5 to move, and makes the LED lamp 5 closer to the corner of the display body 1. The D lamp 5 is moved to a position closer to the corner of the display body 1, so that the four groups of LED lamps 5 can be illuminated at the four corners on the back of the display body 1, and the brightness of the four corners on the back of the display body 1 can be improved. The position of the LED lamp 5 and the design of the corners of the backlight panel 2 are optimized, and the light emitted by the LED lamp 5 is fully spread to the four corners of the display body 1. Compared with the traditional direct-down backlight, the shadows at the four corners are effectively eliminated, the overall brightness uniformity is improved, and the display effect and taste of the picture are greatly improved. At the same time, the right-angle structure at the corner of the backlight panel 2 is changed to an arc-angle structure, so that the transition at the corner of the backlight panel 2 is more natural, and the appearance of the display body 1 is more rounded and slim.

[0019] Moreover, the spacing between the two groups of mounting frames 4 outside the two middle groups of sliding bars 3 is smaller than the spacing between the two groups of mounting frames 4 outside the two outer groups of sliding bars 3. The mounting bar 8 is located on the rear side of the limiting plate 9, and the screw 10 extends to the inside of the limiting plate 9, and the screw 10 is threadedly connected to the limiting plate 9.

[0020] The screws 10 are screwed into the interior of the limiting plate 9 through the mounting bar 8 , so that the screws 10 pass through the mounting bar 8 to limit the mounting bracket 4 outside the sliding bar 3 , and the LED lamp 5 is fixed.

[0021] Working principle: When in use, first push the mounting bracket 4 to make the mounting bracket 4 slide along the sliding bar 3, and make the mounting bracket 4 drive the sliding block 7 to slide in the inner side of the moving groove 6, so that the mounting bracket 4 moves upward, so that the mounting bracket 4 drives the LED lamp 5 to move, and the LED lamp 5 is closer to the corner of the display body 1, and then screw the screw 10 into the inner part of the limiting plate 9 through the mounting bar 8, so that the screw 10 passes through the mounting bar 8 to limit the mounting bracket 4 to the outside of the sliding bar 3, and the LED lamp 5 is fixed, and then another group of mounting brackets 4 is pushed to make another group of mounting brackets 4 slide along another group of sliding bars 3, and the distance between the two groups of mounting brackets 4 outside the other group of sliding bars 3 is adjusted to be smaller than the distance between the two groups of mounting brackets 4 outside the first group of sliding bars 3. When the LED lamp 5 is turned on, the LED lamp 5 emits light outward, and because four groups of LED lamps 5 are located at positions closer to the four corners of the display body 1, the brightness of the four corners on the back of the display body 1 is improved, and at the same time, the four groups of LED lamps in the middle The ED lamp 5 can effectively fill in the back of the display body 1. At the same time, since the four corners of the backlight panel 2 are arc-shaped, the overall aesthetics of the backlight panel 2 is improved. By sliding the mounting frame 4 on the outside of the sliding bar 3, the mounting frame 4 drives the LED lamp 5 to move, and the LED lamp 5 is moved to a position closer to the corner of the display body 1, so as to facilitate the four groups of LED lamps 5 to emit light at the four corners of the back of the display body 1, and improve the brightness of the four corners of the back of the display body 1. The position of the LED lamp 5 and the design of the corners of the backlight panel 2 are optimized, and the light emitted by the LED lamp 5 is fully spread to the four corners of the display body 1. Compared with the traditional direct-down backlight, the shadows at the four corners are effectively eliminated, the overall brightness uniformity is improved, and the display effect and taste of the picture are greatly improved. At the same time, the right-angle structure at the corner of the backlight panel 2 is changed to an arc-angle structure, so that the transition at the corner of the backlight panel 2 is more natural, and the appearance of the display body 1 is more rounded and slim.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A four-corner shadow structure for a direct-lit display backlight, comprising a display body (1), characterized in that: The rear end of the display body (1) is fixedly connected to a backlight panel (2), the rear end of the backlight panel (2) is fixedly connected to a sliding bar (3), the outer side of the sliding bar (3) is slidably connected to a mounting frame (4), the rear end of the mounting frame (4) is mounted with an LED lamp (5), one end of the sliding bar (3) is provided with a moving groove (6), the inner side of the moving groove (6) is slidably connected to a sliding block (7), one end of the mounting frame (4) is fixedly connected to a mounting bar (8), and the rear end of the backlight panel (2) is fixedly connected to a limiting plate (9) on a side close to the backlight panel (2).

2. The four-corner shadow structure of a direct-lit display backlight according to claim 1, characterized in that: The internal threads of the mounting strip (8) are connected to screws (10), and the four corners of the backlight panel (2) are all opened into arc shapes.

3. The four-corner shadow structure of a direct-lit display backlight according to claim 2, characterized in that: There are four groups of the sliding bars (3), and the four groups of the sliding bars (3) are all vertically distributed at the rear end of the backlight panel (2). One end of the sliding block (7) is fixedly connected to the inner wall of the mounting frame (4).

4. The four-corner shadow structure of a direct-lit display backlight according to claim 2, characterized in that: There are multiple groups of the mounting frames (4) and LED lights (5), and two groups of mounting frames (4) are distributed outside each group of the sliding bars (3).

5. The four-corner shadow structure of a direct-lit display backlight according to claim 2, characterized in that: Furthermore, the spacing between the two groups of mounting frames (4) outside the two middle groups of sliding bars (3) is smaller than the spacing between the two groups of mounting frames (4) outside the two outer groups of sliding bars (3).

6. The four-corner shadow structure of a direct-lit display backlight according to claim 2, characterized in that: The mounting strip (8) is located on the rear side of the limiting plate (9), the screw (10) extends into the interior of the limiting plate (9), and the screw (10) is threadedly connected to the limiting plate (9).

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