Low-consumption high-brightness ultrathin backlight source

Abstract

The utility model relates to the technical field of backlight sources, and discloses a low-consumption high-brightness ultrathin backlight source, which comprises a lower cover, an upper cover, an integrated backlight source and a mounting plate, the integrated backlight source is placed on the upper surface of the mounting plate, the lower surface of the upper cover is fixedly connected with four insertion blocks, and the insertion blocks are arranged on the upper surface of the mounting plate. The surface of each insertion block is provided with a clamping groove, the upper surface of the lower cover is provided with four insertion grooves, the insertion grooves are matched with the insertion blocks, the inner side wall of each insertion groove is provided with a groove, and the interior of each groove is provided with a clamping assembly. According to the integrated backlight source, the light guide plate, the reflecting film and the diffusion film on the integrated backlight source are prevented from being damaged due to contact of operators, the safety of the backlight source is improved, meanwhile, the integrated backlight source can be rapidly taken out from the upper cover and the lower cover, and maintenance is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of backlights, in particular to a low-power, high-brightness and ultra-thin backlight. Background Technique

[0002] A backlight is a light source located behind a liquid crystal display (LCD). Its light-emitting effect will directly affect the visual effect of the liquid crystal display module (LCM). The liquid crystal display itself does not emit light. It shows graphics or the result of its modulation of light.

[0003] After retrieval, the low-power, high-brightness and ultra-thin backlight with the application number 201120556984.3 has a frame fixed by positioning cards around the bottom surface of the sheet metal. An optical reflection film is placed inside the frame. A light guide plate is pasted on the optical reflection film with glue. The light guide plate is also fixed to the frame with positioning cards. A flexible circuit board is inlaid in the gap on one side between the light guide plate and the frame. The LED light-emitting body is welded on the flexible circuit board. A lining is pasted on the flexible circuit board. An optical diffusion film, two layers of optical prism paper, and an optical diffusion film are successively arranged on the light guide plate; a light-shielding double-sided adhesive is provided on the optical diffusion film. The utility model uses LEDs that do not contain mercury, have low energy consumption, good color, and long life as the light source; by using the principle of balanced light transmission of the ultra-thin light guide plate and the principles of diffusion, reflection, and refraction of optical film sheets, the light is fully and evenly distributed on the entire light-emitting surface.

[0004] However, there are still some deficiencies in the above backlight during use. The backlight structure is generally fixedly installed in the area formed by the back plate and the cover plate, which is relatively troublesome to install. Moreover, the backlight is prone to failure during use. This setting method is not convenient for the inspection and replacement of the light-emitting body. At the same time, when disassembling, the hand usually directly contacts the backlight, which is easy to cause damage to the backlight. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a low-power, high-brightness and ultra-thin backlight, which solves the problems that the backlight structure is generally fixedly installed in the area formed by the back plate and the cover plate, which is relatively troublesome to install, and the backlight is prone to failure during use. This setting method is not convenient for the inspection and replacement of the light-emitting body. At the same time, when disassembling, the hand usually directly contacts the backlight, which is easy to cause damage to the backlight.

[0006] The present utility model provides the following technical solutions: A low-power, high-brightness, ultra-thin backlight includes a lower cover, an upper cover, an integrated backlight, and a mounting plate. The integrated backlight is placed on the upper surface of the mounting plate. Four insertion blocks are fixedly connected to the lower surface of the upper cover, and a card slot is provided on the surface of each insertion block. Four slots are provided on the upper surface of the lower cover, and the slots are matched with the insertion blocks. A groove is provided on the inner side wall of each slot, and a clamping component is provided inside each groove. A movable groove is provided on the lower surface of the mounting plate, and a group of fixing plates are fixedly connected to the lower surface of the mounting plate. A bidirectional lead screw is rotatably connected between the group of fixing plates. Two lead screw sleeves are threadedly sleeved on the surface of the bidirectional lead screw. Connecting rods are movably connected to the surfaces of the two lead screw sleeves, and a top plate is movably installed between the tops of the two connecting rods.

[0007] Preferred Technical Solution 1: A limiting rod is fixedly connected between the group of fixing plates. Two limiting sleeves are slidably sleeved on the surface of the limiting rod. The connecting rods are also movably connected to the two limiting sleeves. Both connecting rods are movably connected to the top plate, and the top plate can move inside the movable groove.

[0008] Preferred Technical Solution 2: Each clamping component includes a chute provided on the bottom wall inside the groove. A slider is slidably connected inside each chute. A clamping block is fixedly connected to each slider. The clamping block is matched with the card slot. A spring is fixedly connected between each clamping block and the side wall of the corresponding groove.

[0009] Preferred Technical Solution 3: Four positioning rods are fixedly connected to the lower surface of the mounting plate. Four positioning sockets are fixedly connected to the inner bottom wall of the lower cover. The positioning rods are matched with the positioning sockets.

[0010] Preferred Technical Solution 4: Four empty slots are provided on the side surface of the lower cover. The four empty slots are respectively communicated with the four grooves. A dial block is slidably installed inside each empty slot. The four dial blocks are respectively fixedly connected to the four sliders.

[0011] Preferred Technical Solution 5: A protective soft pad is provided on the inner wall of the upper cover.

[0012] Compared with the prior art, the utility model provides a low-power, high-brightness, ultra-thin backlight source with the following beneficial effects: when in use, the dial block is moved to drive the slider and the card block to move and move out from the card slot on the insert block, thereby releasing the lock of the upper cover and the lower cover, and the upper cover can be removed from the lower cover, and then the mounting plate and the integrated backlight source can be removed by taking the mounting plate, and then the two screw rod sleeves are driven to move toward each other by rotating the bidirectional screw rod, thereby driving the ejection plate to move upward through the connecting rod, thereby ejecting the integrated backlight source from the inside of the mounting plate and removing it. The backlight source is lifted up by the ejection plate without manual contact, thereby avoiding damage to the light guide plate, reflective film and diffusion film on the integrated backlight source due to contact by the operator, thereby improving the safety of the backlight source, and at the same time, the integrated backlight source can be quickly removed from the upper cover and the lower cover for easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a structural breakdown diagram of the utility model;

[0015] Figure 3 This is a bottom view of the mounting plate structure of the utility model;

[0016] Figure 4 This is a cross-sectional view of the slot and groove structure of the utility model.

[0017] In the figure: 1. lower cover; 2. upper cover; 3. integrated backlight source; 4. mounting plate; 5. plug-in block; 6. card slot; 7. slot; 8. groove; 9. fixing plate; 10. bidirectional screw; 11. screw sleeve; 12. connecting rod; 13. ejector plate; 14. limit rod; 15. limit sleeve; 16. slide groove; 17. slider; 18. card block; 19. spring; 20. positioning rod; 21. positioning socket; 22. empty slot; 23. shift block. DETAILED DESCRIPTION

[0018] See also Figures 1-4 ,

[0019] Embodiment 1: A low-power, high-brightness, ultra-thin backlight source comprises a lower cover 1, an upper cover 2, an integrated backlight source 3, and a mounting plate 4. The integrated backlight source 3 is placed on the upper surface of the mounting plate 4. Four plug-in blocks 5 are fixedly connected to the lower surface of the upper cover 2. A card slot 6 is provided on the surface of each plug-in block 5. Four slots 7 are provided on the upper surface of the lower cover 1. The slots 7 match the plug-in blocks 5. A groove 8 is provided on the inner side wall of each slot 7. A card connection component is provided inside each groove 8. A movable groove is provided on the lower surface of the mounting plate 4. A group of fixed plates 9 are fixedly connected to the lower surface of the mounting plate 4. A bidirectional screw rod 10 is rotatably connected between the group of fixed plates 9. Two screw rod sleeves 11 are threadedly sleeved on the surface of the bidirectional screw rod 10. A connecting rod 12 is movably connected to the surface of the two screw rod sleeves 11. A ejection plate 13 is movably installed between the top ends of the two connecting rods 12.

[0020] Embodiment 2: The difference between this embodiment and embodiment 1 is that, a group of fixed plates 9 are fixedly connected with a limiting rod 14, and the surface of the limiting rod 14 is slidably sleeved with two limiting sleeves 15, and the two limiting sleeves 15 are also movably connected with connecting rods 12, and the two connecting rods 12 are movably connected to the ejection plate 13, and the ejection plate 13 can move inside the movable groove, so as to limit the movement of the ejection plate 13 and enable it to move up and down better.

[0021] Embodiment 3: The difference between this embodiment and embodiment 1 is that, each snap-fit ​​assembly includes a slide groove 16 opened on the bottom wall inside the groove 8, each slide groove 16 is slidably connected to the inside of a slider 17, each slider 17 is fixedly connected to a clamping block 18, the clamping block 18 matches the clamping groove 6, and a spring 19 is fixedly connected between each clamping block 18 and the corresponding side wall of the groove 8, and the upper cover 2 and the lower cover 1 can be quickly installed and disassembled through the snap-fit ​​assembly.

[0022] Embodiment 4: The difference between this embodiment and embodiment 1 is that four positioning rods 20 are fixedly connected to the lower surface of the mounting plate 4, and four positioning sockets 21 are fixedly connected to the inner bottom wall of the lower cover 1. The positioning rods 20 and the positioning sockets 21 match each other to facilitate the positioning and installation of the mounting plate 4.

[0023] Embodiment 5: The difference between this embodiment and embodiment 1 is that four empty slots 22 are opened on the side of the lower cover 1, and the four empty slots 22 are respectively connected with the four grooves 8. A shift block 23 is slidably installed inside each empty slot 22, and the four shift blocks 23 are respectively fixedly connected with the four sliders 17. By shifting the shift blocks 23, the lock between the upper cover 2 and the lower cover 1 can be quickly released, which is convenient for disassembly.

[0024] Embodiment 6: The difference between this embodiment and embodiment 1 is that a protective cushion is provided on the inner wall of the upper cover 2 to protect the integrated backlight source 3 from damage.

[0025] To sum up, when the low-power and high-brightness ultra-thin backlight source is in use, the slider 17 and the card block 18 are driven to move by toggling the toggle block 23, and are moved out of the card slot 6 on the insert block 5, thereby releasing the lock of the upper cover 2 and the lower cover 1, and the upper cover 2 can be removed from the lower cover 1, and then the mounting plate 4 and the integrated backlight source 3 can be removed by taking the mounting plate 4, and then the two screw rod sleeves 11 are driven to move toward each other by rotating the bidirectional screw rod 10, so that the ejection plate 13 is driven to move upward by the connecting rod 12, so that the integrated backlight source 3 is ejected from the inside of the mounting plate 4, and can be removed. The backlight source is lifted up by the ejection plate 13, and no manual contact is required, which avoids damage to the light guide plate, reflective film and diffusion film on the integrated backlight source 3 due to contact by the operator, thereby improving the safety of the backlight source, and at the same time, the integrated backlight source 3 can be quickly removed from the upper cover 2 and the lower cover 1, which is convenient for maintenance.

Claims

1. A low-power, high-brightness, ultra-thin backlight source, comprising a lower cover (1), an upper cover (2), an integrated backlight source (3), and a mounting plate (4), characterized in that: The integrated backlight source (3) is placed on the upper surface of the mounting plate (4); four plug-in blocks (5) are fixedly connected to the lower surface of the upper cover (2); a card slot (6) is provided on the surface of each of the plug-in blocks (5); four slots (7) are provided on the upper surface of the lower cover (1); the slots (7) match the plug-in blocks (5); a groove (8) is provided on the inner side wall of each of the slots (7); a card-connecting assembly is provided inside each of the grooves (8); a movable groove is provided on the lower surface of the mounting plate (4); a group of fixed plates (9) are fixedly connected to the lower surface of the mounting plate (4); a bidirectional screw rod (10) is rotatably connected between the group of fixed plates (9); two screw rod sleeves (11) are threadedly sleeved on the surface of the bidirectional screw rod (10); the surfaces of the two screw rod sleeves (11) are movably connected to connecting rods (12); and an ejection plate (13) is movably installed between the top ends of the two connecting rods (12).

2. The low-power, high-brightness, ultra-thin backlight source according to claim 1, characterized in that: A set of the fixed plates (9) are fixedly connected with a limiting rod (14), and two limiting sleeves (15) are slidably sleeved on the surface of the limiting rod (14). The two limiting sleeves (15) are also movably connected with the connecting rod (12). The two connecting rods (12) are movably connected to the ejection plate (13), and the ejection plate (13) can move inside the movable groove.

3. The low-power, high-brightness, ultra-thin backlight source according to claim 2, characterized in that: Each of the clamping components comprises a slide groove (16) provided on the inner bottom wall of the groove (8); a slider (17) is slidably connected to the interior of each of the slide grooves (16); a clamping block (18) is fixedly connected to each of the sliders (17); the clamping block (18) matches the clamping groove (6); and a spring (19) is fixedly connected between each of the clamping blocks (18) and the corresponding side wall of the groove (8).

4. The low-power, high-brightness, ultra-thin backlight source according to claim 3, characterized in that: Four positioning rods (20) are fixedly connected to the lower surface of the mounting plate (4), and four positioning sockets (21) are fixedly connected to the inner bottom wall of the lower cover (1), and the positioning rods (20) match the positioning sockets (21).

5. The low-power, high-brightness, ultra-thin backlight source according to claim 4, characterized in that: The side surface of the lower cover (1) is provided with four empty slots (22), the four empty slots (22) are respectively connected to the four grooves (8), a shifting block (23) is slidably installed inside each of the empty slots (22), and the four shifting blocks (23) are respectively fixedly connected to the four sliding blocks (17).

6. The low-power, high-brightness, ultra-thin backlight source according to claim 1, characterized in that: The inner wall of the upper cover (2) is provided with a protective cushion.

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