Backlight source structure of LED liquid crystal screen

Abstract

The utility model discloses an LED liquid crystal screen backlight source structure, and relates to the technical field of LED liquid crystal screens, the LED liquid crystal screen backlight source structure comprises a fixing plate, the inner wall of the fixing plate is provided with a plurality of installation grooves, the inner walls of the installation grooves are tightly connected with LED light sources in a clamped mode, and the four corners of the fixing plate are connected with threaded rods in a rolling mode. And limiting plates are connected to the periphery of the fixing plate in a clamped mode, sliding grooves are formed in the two sides of the four limiting plates correspondingly, and extrusion plates are slidably connected to the inner walls of the sliding grooves correspondingly. The device has the advantages that the threaded rod is rotated to drive the extrusion plate to move, so that the extrusion plate slides in the inner wall of the sliding groove, the extrusion plate drives the limiting plate to move when moving, and the two sides of the light barrier are inserted into the inner wall of the clamping groove and the inner wall of the limiting groove respectively; and light sources on the two sides of the bottom of the limiting plate are sealed through sealing strips, and the effect that when the LED light sources are damaged, workers can take out the LED light sources more conveniently for maintenance is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of LED liquid crystal screens, in particular to a backlight source structure of an LED liquid crystal screen. Background Art

[0002] The so-called backlight is a light source located behind the liquid crystal display (LCD). Its luminous effect will directly affect the visual effect of the LCD display module. The liquid crystal itself does not emit light. It displays graphics or characters as a result of its modulation of light.

[0003] After searching, the applicant found that a Chinese patent disclosed "a LED liquid crystal screen backlight source structure", and its publication (announcement) number is "CN218630449U". This patent mainly uses a fixed seat, a light guide plate and an LED light strip to gradually install and fix it, making its assembly simple. After the assembly is completed, a shading silicone pad is arranged around the installation of the fixed seat and the light guide plate to prevent light leakage. At the same time, the LED light source is adsorbed on the LED light strip, making it easy to replace and use. However, although the backlight source structure can be assembled well, when the LED light source is damaged, the light strip needs to be taken out before the LED light source can be replaced and repaired, which makes it troublesome for workers to disassemble the entire LED LCD screen. For this reason, we propose a LED liquid crystal screen backlight source structure. Utility Model Content

[0004] The utility model aims to provide a LED liquid crystal screen backlight source structure.

[0005] In order to solve the problems raised in the above-mentioned background technology, the utility model provides the following technical solutions: an LED liquid crystal screen backlight source structure, comprising a fixing plate, the inner wall of the fixing plate is provided with a plurality of mounting grooves, the inner walls of the plurality of mounting grooves are tightly clamped with LED light sources, the four corners of the fixing plate are rollingly connected with threaded rods, the four sides of the fixing plate are clamped with limiting plates, both sides of the four limiting plates are provided with sliding grooves, the inner walls of the sliding grooves are slidably connected with extrusion plates, and the threaded rods are rollingly connected to the inner walls of the extrusion plates.

[0006] Preferably, the four corners of the fixing plate are inclined surfaces, and the end of the threaded rod without threads is rollingly connected to the inner wall of the fixing plate, and the fixing plate is fixedly connected with sealing strips on all four sides, and the side surfaces of the sealing strips are in contact with the bottom sides of the limiting plate.

[0007] Preferably: limiting grooves are provided on both sides of the front and back of the fixing plate, and both sides of the limiting grooves are located on both sides of the installation groove, the inner walls of the eight limiting grooves are plugged with light blocking plates, and the sides of the four limiting plates close to the center are provided with card slots, and the other ends of the eight light blocking plates are plugged into the inner walls of the card slots.

[0008] Preferably, one side of the limiting plate close to the center is fixedly connected with an extrusion block, and one side of the extrusion block is in contact with the LED light source.

[0009] Preferably, threaded holes are provided on both sides of the inner wall of the installation groove, pins are fixedly connected to both sides of the LED light source, bolts are rollingly connected to the inner wall of the threaded hole, and pins are rollingly connected to the outer side of the bolt.

[0010] Preferably, a light guide plate is clamped on the inner wall of the fixing plate, and a positioning rib is fixedly connected to the rear of the inner wall of the fixing plate.

[0011] Preferably, one side of the four limiting plates away from the positioning rib is fixedly connected to a baffle, and one side of the baffle is in contact with the outer side of the light guide plate.

[0012] Adopting the above technical solution: Compared with the prior art, the beneficial effect of the utility model is:

[0013] 1. Workers drive the bolts to screw the pins into the threaded holes, so that the LED light source is connected to the circuit lines inside the fixing plate, and then the LED light source is powered. The extrusion plate is driven to move by rotating the threaded rod, so that the extrusion plate slides in the inner wall of the slide groove, so that the extrusion plate drives the limiting plate to move when moving, so that the limiting plate drives the extrusion block to squeeze the LED light source to prevent the LED light source from shaking. The two sides of the light blocking plate are respectively plugged into the inner walls of the card slot and the limiting slot, so that the light blocking plate blocks the LED light source from emitting light. The sealing strip is used to seal the light sources on both sides of the bottom of the limiting plate, so that when the LED light source is damaged, the workers can more conveniently take out and repair the LED light source.

[0014] 2. By rotating the threaded rod, the extrusion plate is driven to move up and down, so that the extrusion plate drives the limiting plate and the baffle plate to move, so that the baffle plate can squeeze one side of the light guide plate. The positioning ribs are used to facilitate workers to place the fixed plate, and the baffle plate is used to squeeze one side of the light guide plate, so that the light guide plate is clamped between the baffle plate and the positioning ribs, thereby achieving the effect of facilitating workers to quickly install the light guide plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional schematic diagram of the light source structure in the embodiment of the utility model;

[0016] Figure 2 This is a three-dimensional schematic diagram of the connection relationship of the fixing plate in the embodiment of the utility model;

[0017] Figure 3 This is a three-dimensional schematic diagram of a fixing plate in an embodiment of the utility model;

[0018] Figure 4 It is a three-dimensional schematic diagram of a limiting plate in an embodiment of the utility model.

[0019] In the figure: 1. fixing plate; 2. mounting groove; 3. LED light source; 4. threaded rod; 5. limiting plate; 6. slide groove; 7. extrusion plate; 8. limiting groove; 9. light shielding plate; 10. card slot; 11. extrusion block; 12. threaded hole; 13. pin; 14. light guide plate; 15. positioning rib; 16. baffle; 17. sealing strip. DETAILED DESCRIPTION

[0020] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0021] Example 1

[0022] See also Figure 1-Figure 4 The utility model provides a technical solution: it includes a fixing plate 1, the inner wall of the fixing plate 1 is provided with a plurality of mounting grooves 2, the inner walls of the plurality of mounting grooves 2 are tightly clamped with LED light sources 3, the four corners of the fixing plate 1 are rollingly connected with threaded rods 4, the surroundings of the fixing plate 1 are clamped with limiting plates 5, the two sides of the four limiting plates 5 are provided with sliding grooves 6, the inner walls of the sliding grooves 6 are slidingly connected with extrusion plates 7, and the threaded rods 4 are rollingly connected to the inner walls of the extrusion plates 7, the four corners of the fixing plate 1 are inclined, and the end of the threaded rod 4 without threads is rollingly connected to the inner wall of the fixing plate 1, the surroundings of the fixing plate 1 are fixedly connected with sealing strips 17, and the side of the sealing strip 17 is connected to the bottom of the limiting plate 5 The two sides of the fixing plate 1 are in contact with each other, limiting grooves 8 are provided on both sides of the front and back sides, and both sides of the limiting grooves 8 are located on both sides of the mounting groove 2, the inner walls of the eight limiting grooves 8 are plugged with light blocking plates 9, and the four limiting plates 5 have a card slot 10 on one side close to the center, and the other ends of the eight light blocking plates 9 are plugged into the inner wall of the card slot 10, and the limiting plate 5 is fixedly connected with an extrusion block 11 on one side close to the center, and one side of the extrusion block 11 is in contact with the LED light source 3, threaded holes 12 are provided on both sides of the inner wall of the mounting groove 2, and pins 13 are fixedly connected on both sides of the LED light source 3, bolts are rollingly connected to the inner walls of the threaded holes 12, and the pins 13 are rollingly connected to the outer sides of the bolts.

[0023] When in use, a worker drives the bolt to screw the pin 13 into the threaded hole 12, so that the LED light source 3 is connected to the circuit line inside the fixing plate 1, and then the LED light source 3 is powered. The extrusion plate 7 is driven to move by rotating the threaded rod 4, so that the extrusion plate 7 slides in the inner wall of the slide groove 6, so that the extrusion plate 7 drives the limiting plate 5 to move when moving, so that the limiting plate 5 drives the extrusion block 11 to squeeze the LED light source 3 to prevent the LED light source 3 from shaking. The two sides of the light blocking plate 9 are respectively inserted into the inner walls of the card slot 10 and the limiting slot 8, so that the light blocking plate 9 blocks the LED light source 3 from emitting light, and the sealing strip 17 is used to seal the light sources on both sides of the bottom of the limiting plate 5, so that when the LED light source 3 is damaged, the workers can more conveniently take out and repair the LED light source 3.

[0024] Example 2

[0025] See also Figure 1-Figure 4 The utility model provides a technical solution: it includes a fixing plate 1, the inner wall of the fixing plate 1 is provided with a plurality of mounting grooves 2, the inner walls of the plurality of mounting grooves 2 are tightly clamped with LED light sources 3, the four corners of the fixing plate 1 are rollingly connected with threaded rods 4, the four sides of the fixing plate 1 are clamped with limiting plates 5, both sides of the four limiting plates 5 are provided with sliding grooves 6, the inner walls of the sliding grooves 6 are slidingly connected with extrusion plates 7, and the threaded rods 4 are rollingly connected to the inner walls of the extrusion plates 7, the inner wall of the fixing plate 1 is clamped with a light guide plate 14, the inner wall of the fixing plate 1 is fixedly connected with a positioning rib 15 at the back, the four limiting plates 5 are fixedly connected with a baffle 16 on the side away from the positioning rib 15, and one side of the baffle 16 is in contact with the outer side of the light guide plate 14.

[0026] When in use, the extrusion plate 7 is driven to move up and down by rotating the threaded rod 4, so that the extrusion plate 7 drives the limiting plate 5 and the baffle plate 16 to move, so that the baffle plate 16 can squeeze one side of the light guide plate 14. The positioning ribs 15 are used to facilitate workers to place the fixed plate 1, and the baffle plate 16 is used to squeeze one side of the light guide plate 14, so that the light guide plate 14 is clamped between the baffle plate 16 and the positioning ribs 15, thereby achieving the effect of facilitating workers to quickly install the light guide plate 14.

[0027] Working principle: workers drive the bolt to screw the pin 13 into the threaded hole 12, so that the LED light source 3 is connected to the circuit line inside the fixing plate 1, and then the LED light source 3 is powered. The extrusion plate 7 is driven to move by rotating the threaded rod 4, so that the extrusion plate 7 slides in the inner wall of the slide groove 6, so that the extrusion plate 7 drives the limiting plate 5 to move when moving, so that the limiting plate 5 drives the extrusion block 11 to squeeze the LED light source 3 to prevent the LED light source 3 from shaking. The two sides of the light blocking plate 9 are respectively plugged into the inner walls of the card slot 10 and the limiting slot 8, so that the light blocking plate 9 blocks the LED light source 3 from emitting light. The sealing strip 17 is used to seal the light sources on both sides of the bottom of the limiting plate 5, so that when the LED light source 3 is damaged, the workers can more conveniently take out and repair the LED light source 3. The extrusion plate 7 is driven up and down by rotating the threaded rod 4, so that the extrusion plate 7 drives the limiting plate 5 and the baffle 16 to move, and the baffle 16 squeezes one side of the light guide plate 14. The positioning ribs 15 make it convenient for workers to place the fixed plate 1, and use the baffle 16 to squeeze one side of the light guide plate 14, so that the light guide plate 14 is clamped between the baffle 16 and the positioning ribs 15, so that the workers can quickly install the light guide plate 14.

[0028] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. An LED liquid crystal screen backlight structure, comprising a fixing plate (1), characterized in that: The inner wall of the fixing plate (1) is provided with a plurality of mounting grooves (2), the inner walls of the plurality of mounting grooves (2) are tightly clamped with LED light sources (3), the four corners of the fixing plate (1) are rollingly connected with threaded rods (4), the four sides of the fixing plate (1) are clamped with limiting plates (5), both sides of the four limiting plates (5) are provided with sliding grooves (6), the inner walls of the sliding grooves (6) are slidably connected with extrusion plates (7), and the threaded rods (4) are rollingly connected to the inner walls of the extrusion plates (7).

2. The LED liquid crystal screen backlight structure according to claim 1, characterized in that: The four corners of the fixing plate (1) are inclined surfaces, and the end of the threaded rod (4) without threads is rollingly connected to the inner wall of the fixing plate (1). The fixing plate (1) is fixedly connected with a sealing strip (17) on all four sides, and the side surfaces of the sealing strip (17) are in contact with the two sides of the bottom of the limiting plate (5).

3. The LED liquid crystal screen backlight structure according to claim 1, characterized in that: The fixing plate (1) is provided with limiting grooves (8) on both sides of the front and rear sides, and both sides of the limiting grooves (8) are located on both sides of the mounting groove (2). The inner walls of the eight limiting grooves (8) are plugged with light blocking plates (9). The four limiting plates (5) are provided with a clamping groove (10) on one side close to the center, and the other ends of the eight light blocking plates (9) are plugged into the inner wall of the clamping groove (10).

4. The LED liquid crystal screen backlight structure according to claim 1, characterized in that: A side of the limiting plate (5) close to the center is fixedly connected to an extrusion block (11), and one side of the extrusion block (11) is in contact with the LED light source (3).

5. The LED liquid crystal screen backlight structure according to claim 1, characterized in that: Threaded holes (12) are provided on both sides of the inner wall of the installation groove (2), pins (13) are fixedly connected to both sides of the LED light source (3), bolts are rollingly connected to the inner wall of the threaded hole (12), and the outer side of the bolt is rollingly connected to the pin (13).

6. The LED liquid crystal screen backlight structure according to claim 1, characterized in that: A light guide plate (14) is clamped on the inner wall of the fixing plate (1), and a positioning rib (15) is fixedly connected to the rear of the inner wall of the fixing plate (1).

7. The LED liquid crystal screen backlight structure according to claim 6, characterized in that: The four limiting plates (5) are fixedly connected to a baffle plate (16) on one side away from the positioning rib (15), and one side of the baffle plate (16) is in contact with the outer side of the light guide plate (14).

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