LED backlight assembly

Abstract

The utility model discloses LED backlight source assembly relates to display technical field, and this assembly includes the outer frame and the inner frame of detachable containing in the inside of outer frame, be provided with the heat dissipation fin on the inner frame, be provided with the heat dissipation hole of corresponding heat dissipation fin position on the outer frame, in order to solve the problem of inconvenient dismounting, LED backlight source assembly still be provided with the clamping block of mounting on the outer frame, the inner wall of outer frame is fixed with the limiting rod, and the outer wall of inner frame is provided with the limiting slot of the sliding plate of clamping block and clamping block's sliding for the card, the clamping block includes the sliding plate, the pull rod of fixed connection with the sliding plate and the spring of one end abuts against the outer frame, and the other end abuts against the sliding plate. The utility model passes through above-mentioned heat dissipation structure and buckle structure, solved the problem of poor heat dissipation and inconvenient dismounting maintenance in the prior art, has the advantages such as high heat dissipation efficiency, maintainability is strong, convenient operation.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and in particular to LED backlight components. Background Technology

[0002] LED backlight components are one of the core components of liquid crystal displays (LCDs), and their function is to provide uniform and high-brightness backlight support for the display. As a light source, LED tubes (or strips) generate a lot of heat during long-term operation.

[0003] In existing technologies, if this heat cannot be dissipated effectively and promptly, it will accumulate inside the component, causing the LED tube to overheat. High temperatures can severely affect the luminous efficiency, color stability, and lifespan of LEDs, and may even damage other electronic components within the component. Therefore, heat dissipation performance is a key indicator for evaluating the reliability of backlight components.

[0004] Furthermore, LED tubes in LED backlight assemblies are consumable components that may require maintenance or replacement after prolonged use. However, in the structural design of existing backlight assemblies, the internal tube frame (inner frame) and the external support frame (outer frame) are typically fixed together using screws or integrated clips. This fixing method makes disassembly very cumbersome when maintenance is needed. It not only requires specialized tools such as screwdrivers, but is also inconvenient, time-consuming, and labor-intensive, and can easily cause secondary damage to the components or display screen during disassembly and assembly.

[0005] Current market designs often struggle to simultaneously achieve both high-efficiency heat dissipation and easy disassembly and maintenance.

[0006] Therefore, this utility model proposes an LED backlight assembly to address the shortcomings of the prior art. Utility Model Content

[0007] To overcome the above shortcomings, this utility model provides an LED backlight assembly, which aims to improve the problems of low heat dissipation efficiency and inconvenient disassembly and maintenance of existing LED backlight assemblies.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: an LED backlight assembly, comprising: an outer frame and an inner frame detachably housed inside the outer frame; the inner frame is provided with heat dissipation fins, and the outer frame has heat dissipation holes corresponding to the positions of the heat dissipation fins; the LED backlight assembly further comprises a locking block installed on the outer frame, a limiting rod is fixed on the inner wall of the outer frame, and a limiting groove is provided on the outer wall of the inner frame for the limiting rod and the sliding plate of the locking block to engage.

[0009] The locking block has a locking structure consisting of a sliding plate, a pull rod fixedly connected to the sliding plate, and a spring with one end abutting the outer frame and the other end abutting the sliding plate.

[0010] Furthermore, the inner frame, the outer frame, and the locking block are combined in such a way that the sliding plate is held in the locked position by the spring driving the sliding plate into the limiting groove, while the limiting rod is accommodated in the limiting groove.

[0011] Preferably, an LED tube is installed inside the inner frame, and the heat dissipation fins are thermally connected to the LED tube.

[0012] Preferably, a display screen is fixed to the front end of the outer frame.

[0013] Preferably, the heat dissipation fins exchange heat with the air outside the component through the heat dissipation holes.

[0014] Preferably, the pull rod passes through a through hole in the outer frame and extends to the outside of the outer frame, and is operated to drive the sliding plate to compress the spring, so that the sliding plate disengages from the limiting groove.

[0015] Preferably, the inner frame includes two side walls that are disposed opposite to each other, and the limiting grooves are respectively formed on the two side walls.

[0016] Preferably, the outer frame includes two inner walls corresponding to the two side walls of the inner frame, and the limiting rods are respectively fixed on the two inner walls and correspond one-to-one with the limiting grooves.

[0017] Preferably, the limiting groove includes a first engaging portion for engaging the sliding plate and a second receiving portion for receiving the limiting rod.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model solves the problem of poor heat dissipation and easy heat accumulation in existing LED backlight components by setting heat dissipation fins on the inner frame and opening heat dissipation holes on the outer frame corresponding to the positions of the heat dissipation fins. It achieves the effect of quickly dissipating the heat generated by the LED tube to the outside, significantly improving heat dissipation efficiency, and ensuring stable operation of the component.

[0020] 2. This utility model solves the problems of complex disassembly and assembly, inconvenient maintenance, and reliance on tools in existing backlight components by setting a locking block composed of a sliding plate, a pull rod, and a spring, which cooperates with the limiting rod on the outer frame and the limiting groove on the inner frame. It achieves the technical effect of tool-free quick locking and unlocking between the inner frame and the outer frame, thus improving maintainability. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the LED backlight assembly proposed in this utility model;

[0022] Figure 2 This is an exploded view of the inner frame of the LED backlight assembly proposed in this utility model.

[0023] Figure 3 This is a schematic diagram of the heat dissipation fin structure of the LED backlight assembly proposed in this utility model;

[0024] Figure 4 This is a schematic diagram of the heat dissipation hole structure of the LED backlight assembly proposed in this utility model;

[0025] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0026] Legend:

[0027] 1. Outer frame; 101. Display screen; 102. Limiting rod; 2. Inner frame; 201. Heat dissipation hole; 202. Limiting groove; 203. LED tube; 204. Heat dissipation fins; 3. Locking block; 301. Sliding plate; 302. Pull rod; 303. Spring. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Reference Figures 1-5 This utility model provides an embodiment of an LED backlight assembly, including an outer frame 1 and an inner frame 2 detachably housed inside the outer frame 1. The outer frame 1 serves as the external support structure for the entire LED backlight assembly, providing protection and load-bearing for the internal components, and a display screen 101 is fixed to the front end of the outer frame 1. The inner frame 2 serves as the core functional carrier, housing LED tubes 203, which provide backlighting for the display screen 101. To achieve effective heat dissipation of the LED backlight assembly, heat dissipation fins 204 are provided on the inner frame 2. The heat dissipation fins 204 form a thermal conduction connection with the LED tubes 203 to efficiently transfer the heat generated by the LED tubes 203 during operation. The outer frame 1 has heat dissipation holes 201 corresponding to the positions of the heat dissipation fins 204. The heat dissipation fins 204 exchange heat with the air outside the assembly through the heat dissipation holes 201, thereby dissipating heat to the outside of the assembly and maintaining a stable operating temperature of the LED tubes 203.

[0030] To facilitate the installation and removal of the LED backlight assembly, the LED backlight assembly also includes a locking block 3 mounted on the outer frame 1. The locking block 3 is used to lock the inner frame 2 in place. A limiting rod 102 is fixed on the inner wall of the outer frame 1, and a limiting groove 202 is provided on the outer wall of the inner frame 2 for the limiting rod 102 and the sliding plate 301 of the locking block 3 to engage. The locking block 3 includes a sliding plate 301, a pull rod 302 fixedly connected to the sliding plate 301, and a spring 303 with one end abutting against the outer frame 1 and the other end abutting against the sliding plate 301. The spring 303 is used to drive the sliding plate 301 to remain in the locked position engaged in the limiting groove 202. When the sliding plate 301 engages in the limiting groove 202, the limiting rod 102 is also accommodated in the limiting groove 202, together achieving a stable lock between the inner frame 2 and the outer frame 1. The pull rod 302 passes through the through hole in the outer frame 1 and extends to the outside of the outer frame 1. The operator can pull the pull rod 302 to compress the spring 303 of the sliding plate 301, causing the sliding plate 301 to disengage from the limiting groove 202, thereby unlocking and removing the inner frame 2. The inner frame 2 includes two oppositely arranged side walls, and the limiting grooves 202 are respectively opened on the two side walls. The outer frame 1 includes two inner walls corresponding to the two side walls of the inner frame 2. The limiting rods 102 are respectively fixed on the two inner walls and correspond one-to-one with the limiting grooves 202. The limiting groove 202 includes a first engaging part for engaging the sliding plate 301 and a second receiving part for receiving the limiting rods 102.

[0031] The locking block 3 includes a sliding plate 301, a pull rod 302 fixedly connected to the sliding plate 301, and a spring 303. The locking block 3 is installed on the outer frame 1. Specifically, the pull rod 302 passes through the through hole opened on the outer frame 1 and extends to the outside of the outer frame 1. The sliding plate 301 is located inside the outer frame 1. One end of the spring 303 abuts against the outer frame 1, and the other end abuts against the sliding plate 301. The function of the locking block 3 is to lock or unlock the inner frame 2 by engaging or disengaging the sliding plate 301 with the limiting groove 202 on the inner frame 2. Meanwhile, a limiting groove 202 is correspondingly provided on the outer wall of the inner frame 2 for the sliding plate 301 and the limiting rod 102 on the outer frame 1 to engage. In the locked state, the elastic force of the spring 303 pushes the sliding plate 301, so that the engaging end of the sliding plate 301 is stably engaged in the first engaging part of the limiting groove 202. At the same time, the limiting rod 102 on the outer frame 1 also enters the second receiving part of the limiting groove 202. This snap-locking structure, consisting of a spring-driven sliding plate and a limiting groove, combined with the auxiliary limiting of the limiting rod 102, ensures that the inner frame 2 and the outer frame 1 can be quickly fixed without tools, and the connection is reliable and stable, simplifying installation and maintenance operations. As for the power supply circuit for powering the LED tube 203, those skilled in the art can use various conventional methods such as a constant current source to implement it. The specific circuit structure is well-known in the art and will not be described in detail here.

[0032] In a preferred embodiment, in order to integrate the backlight function and heat dissipation, an LED tube 203 is installed inside the inner frame 2, and a heat dissipation fin 204 extends along the length of the LED tube 203. The heat dissipation fin 204 and the LED tube 203 form a thermal conduction connection to ensure that heat can be effectively transferred from the LED tube 203 to the heat dissipation fin 204.

[0033] In a preferred embodiment, to form a complete display assembly, a display screen 101 is fixed to the front end of the outer frame 1, and the inner frame 2 and LED tubes 203 are located behind the display screen 101 to provide backlighting. In a preferred embodiment, to enhance heat dissipation, heat dissipation fins 204 exchange heat with the air outside the assembly through heat dissipation holes 201, efficiently dissipating heat.

[0034] In a preferred embodiment, in order to achieve convenient unlocking operation, the pull rod 302 passes through the through hole opened on the outer frame 1 and extends to the outside of the outer frame 1. The operator can pull the pull rod 302, which drives the sliding plate 301 to slide on a plane perpendicular to the installation direction of the inner frame 2 and compress the spring 303, so that the sliding plate 301 disengages from the limiting groove 202.

[0035] In a preferred embodiment, in order to achieve a symmetrical and stable locking structure, the inner frame 2 includes two side walls that are arranged opposite to each other, and the limiting grooves 202 are respectively opened on the two side walls;

[0036] As a preferred embodiment, corresponding to the structure of the inner frame 2, the outer frame 1 includes two inner walls corresponding to the two side walls of the inner frame 2. The limiting rods 102 are fixed on the two inner walls respectively and correspond one-to-one with the limiting grooves 202, which are used to provide support and limitation when the inner frame 2 is installed in place.

[0037] In a preferred embodiment, in order to realize the cooperative limiting function of the locking block 3 and the limiting rod 102 in the limiting groove 202, the limiting groove 202 is structurally divided into a first locking part for locking the sliding plate 301 and a second receiving part for accommodating the limiting rod 102.

[0038] Working principle: When the display is in operation, the LED tubes 203 inside the inner frame 2 emit light to provide backlight for the display screen 101 and generate heat. The heat is transferred to the heat dissipation fins 204 installed on the inner frame 2 through thermal conduction. The heat dissipation fins 204 increase the heat exchange surface area and efficiently conduct the heat to the outer surface of the inner frame 2. The outer frame 1 has heat dissipation holes 201 at positions corresponding to the heat dissipation fins 204. The heat on the outer surface of the inner frame 2 comes into contact with and convects with the cold air outside the component through the heat dissipation holes 201, achieving efficient heat dissipation and ensuring that the LED tubes 203 can operate stably.

[0039] When installing the inner frame 2, push the inner frame 2 into the outer frame 1 so that the limiting groove 202 on the inner frame 2 is initially aligned with the limiting rod 102 on the inner wall of the outer frame 1. At this time, operate the pull rod 302 that extends to the outside of the outer frame 1. The pull rod 302 drives the sliding plate 301 to move and compress the spring 303, so that the snap-fit ​​end of the sliding plate 301 is retracted. The inner frame 2 can be completely pushed into the predetermined position of the outer frame 1. At this time, the limiting rod 102 enters the second receiving part of the limiting groove 202. Then release the pull rod 302. Under the elastic drive of the spring 303, the sliding plate 301 automatically resets and snaps into the first snap-fit ​​part of the limiting groove 202, realizing the quick snap-fit ​​locking of the inner frame 2 and the outer frame 1.

[0040] When it is necessary to repair or replace the LED tube 203, operate the lever 302 again to make the sliding plate 301 overcome the elastic force of the spring 303 and compress the spring 303, causing the locking end of the sliding plate 301 to disengage from the first locking part of the limiting groove 202 and release the locking state. At this time, the inner frame 2 can be easily pulled out from the outer frame 1 along the guide of the limiting rod 102. The entire installation and disassembly process does not require additional tools and is simple and quick to operate.

Claims

1. An LED backlight assembly, including: Outer frame (1), and inner frame (2) detachably housed inside the outer frame (1); The inner frame (2) is provided with heat dissipation fins (204), and the outer frame (1) is provided with heat dissipation holes (201) corresponding to the positions of the heat dissipation fins (204). Its characteristic is that it further includes: The latch (3) is installed on the outer frame (1) and is used to lock the inner frame (2). A limit rod (102) is fixed on the inner wall of the outer frame (1) and a limit groove (202) is provided on the outer wall of the inner frame (2) for the limit rod (102) and the sliding plate (301) of the latch (3) to be engaged. The locking block (3) includes the sliding plate (301), the pull rod (302) fixedly connected to the sliding plate (301), and the spring (303) with one end abutting the outer frame (1) and the other end abutting the sliding plate (301). The spring (303) is used to drive the sliding plate (301) to remain in the locked position where it is locked into the limiting groove (202).

2. The LED backlight assembly according to claim 1, characterized in that: An LED tube (203) is installed inside the inner frame (2), and the heat dissipation fins (204) form a thermal conductive connection with the LED tube (203).

3. The LED backlight assembly according to claim 1, characterized in that: The front end of the outer frame (1) is fixed with a display screen (101).

4. The LED backlight assembly according to claim 1, characterized in that: The heat dissipation fins (204) exchange heat with the air outside the component through the heat dissipation holes (201).

5. The LED backlight assembly according to claim 1, characterized in that: The pull rod (302) passes through the through hole on the outer frame (1) and extends to the outside of the outer frame (1), and is operated to drive the sliding plate (301) to compress the spring (303), so that the sliding plate (301) disengages from the limiting groove (202).

6. The LED backlight assembly according to claim 1, characterized in that: The inner frame (2) includes two side walls that are arranged opposite to each other, and the limiting grooves (202) are respectively opened on the two side walls.

7. The LED backlight assembly according to claim 6, characterized in that: The outer frame (1) includes two inner walls corresponding to the two side walls of the inner frame (2), and the limiting rods (102) are fixed on the two inner walls respectively and correspond one-to-one with the limiting grooves (202).

8. The LED backlight assembly according to claim 1, characterized in that: The limiting groove (202) includes a first engaging portion for engaging the sliding plate (301) and a second receiving portion for receiving the limiting rod (102).

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