Low-temperature heat dissipation type LED backlight source

Abstract

The utility model discloses a low-temperature heat dissipation type light-emitting diode (LED) backlight source, which relates to the technical field of LED backlight sources and comprises a shell, mounting frames and an LED backlight source component, the mounting frames are fixed on the left side and the right side in the shell, and the LED backlight source component is arranged in the middle of the mounting frames. The LED backlight source assembly comprises a mounting substrate, a placement groove, a reflecting plate, an LED light bar, heat dissipation fins and an LED chip, the mounting substrate is of a rectangular structure, the placement groove is formed in the mounting substrate, the reflecting plate is fixed to the inner wall of the placement groove, and the LED light bar is mounted in the middle of the interior of the placement groove. According to the low-temperature heat dissipation type LED backlight source, the arc curvatures of the side walls, opposite to each other, of the reflectors which are integrally arc-shaped concave surfaces are different, the asymmetrical arrangement facilitates mutual reflection and improves the light-emitting diffusion effect, meanwhile, the inner walls of the reflectors are of diamond-shaped polyhedral structures, the light effect can be further reflected and enhanced, and then the irradiation brightness rate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of LED backlight sources, in particular to a low-temperature heat dissipation type LED backlight source. Background Art

[0002] LED backlight refers to the use of LED (light-emitting diode) as the backlight source of the liquid crystal display. Compared with the traditional CCFL (cold cathode tube) backlight, LED has the characteristics of low power consumption, low heat generation, high brightness, and long life, and is expected to completely replace the traditional backlight system in recent years. LED backlight can enhance the color performance of LCD display.

[0003] For example, the utility model with application number CN201920216805.8 discloses an LED backlight source. The LED backlight source similar to the above application currently still has the following shortcomings: during use, the light diffusion effect is not good, and the heat dissipation effect is general, which easily affects the service life of the LED backlight source.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a low-temperature heat dissipation LED backlight source is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a low-temperature heat dissipation type LED backlight source to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-temperature heat-dissipating LED backlight source, comprising a shell, a mounting frame and an LED backlight source assembly, the shell having mounting frames fixed on both left and right sides thereof, and an LED backlight source assembly arranged inside between the mounting frames, the LED backlight source assembly comprising a mounting substrate, a mounting groove, a reflector, an LED light strip, heat dissipating fins and an LED chip, the mounting substrate being in a rectangular structure, and a mounting groove being arranged inside the mounting substrate, a reflector being fixed on the inner wall of the mounting groove, and an LED light strip being arranged in the middle of the mounting groove, heat dissipating fins being fixed on both sides of the outside of the mounting substrate, and an LED chip being embedded in one side of the mounting substrate.

[0007] Furthermore, the installation frame is in a "U"-shaped structure, and the installation frame and the LED backlight source assembly are connected by bolts.

[0008] Furthermore, the reflective plate is an overall arc-shaped concave surface, and the arc curvatures of the side walls of the reflective plate that are opposite to each other are different, and the inner wall of the reflective plate is a diamond-shaped polyhedron structure.

[0009] Furthermore, side bottom plates are fixed below both sides of the shell, and a micro cooling fan is installed on the inner side of the middle part of the side bottom plates.

[0010] Furthermore, a low-temperature heat dissipation component is provided below the shell, and the low-temperature heat dissipation component includes a heat conduction plate and a water cooling box. The heat conduction plate is embedded in the inner middle part of the shell, and a water cooling box is fixed below the heat conduction plate.

[0011] Furthermore, the low-temperature heat dissipation component also includes a water-cooled heat dissipation block, and the water-cooled heat dissipation block is integrally arranged below the water-cooled box, and the water-cooled box and the water-cooled heat dissipation block are interconnected.

[0012] The utility model provides a low-temperature heat dissipation type LED backlight source, which has the following beneficial effects:

[0013] The utility model is provided with an LED backlight source assembly, and the mounting groove inside the mounting base is used to install the LED light strip, and the heat dissipation fins on the two sides of the outside can perform preliminary heat dissipation on the mounting base and the LED light strip. The arc curvatures of the two opposite side walls of the reflector plate which is an overall arc-shaped concave surface are different, and the asymmetric arrangement is conducive to mutual reflection to improve the light diffusion effect. At the same time, the diamond-shaped polyhedron structure of the inner wall of the reflector plate can further reflect and enhance the light effect, which is conducive to improving the illumination brightness, and the three LED backlight source assemblies are convenient for enhancing the light-emitting effect. The mounting frames on both sides are connected to the LED backlight source assembly by bolts to facilitate the installation of the LED backlight source assembly.

[0014] The utility model is provided with a low-temperature heat dissipation component. The heat conduction plate is used to conduct heat to the LED backlight source component. The water-cooling box is internally provided with water-cooling liquid for exchanging heat and cooling the heat conduction plate, thereby realizing cooling of the LED backlight source component. The water-cooling box is interconnected with a plurality of water-cooling heat sinks distributed equidistantly below, so that ventilation and heat dissipation can be achieved between the water-cooling heat sinks, and heat is taken away by airflow. Meanwhile, the micro heat dissipation fans on both sides can further ventilate and dissipate heat to the water-cooling box and the water-cooling heat sinks, so that the water-cooling box and the water-cooling heat sinks are kept in a low temperature state and heat is continuously exchanged with the LED backlight source component through the heat conduction plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall top view structure of a low-temperature heat dissipation type LED backlight source of the utility model;

[0016] Figure 2 This is a schematic diagram of the reflector structure of an LED backlight source assembly of a low-temperature heat dissipation type LED backlight source of the utility model;

[0017] Figure 3 This is a schematic diagram of the top view of the shell structure of a low-temperature heat dissipation type LED backlight source of the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the overall upward structure of a low-temperature heat dissipation type LED backlight source.

[0019] In the figure: 1. Shell; 2. Mounting frame; 3. LED backlight assembly; 301. Mounting substrate; 302. Mounting groove; 303. Reflector; 304. LED light bar; 305. Heat dissipation fins; 306. LED chip; 4. Side bottom plate; 5. Micro cooling fan; 6. Low-temperature heat dissipation assembly; 601. Heat conduction plate; 602. Water cooling box; 603. Water cooling heat sink. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0021] like Figure 1-Figure 2 As shown, a low-temperature heat dissipation type LED backlight source includes a shell 1, a mounting frame 2 and an LED backlight source assembly 3. The mounting frames 2 are fixed on both sides of the inside of the shell 1, and the LED backlight source assembly 3 is arranged inside the mounting frames 2. The mounting frame 2 is a "U"-shaped structure, and the mounting frame 2 and the LED backlight source assembly 3 are connected by bolts; the LED backlight source assembly 3 includes a mounting substrate 301, a placement groove 302, a reflector 303, an LED light bar 304, a heat dissipation fin 305 and an LED chip 306. The mounting substrate 301 is a rectangular structure, and a mounting groove 302 is arranged inside the mounting substrate 301, a reflector 303 is fixed to the inner wall of the mounting groove 302, and an LED light bar 304 is installed in the middle of the mounting groove 302, heat dissipation fins 305 are fixed to both sides of the outside of the mounting substrate 301, and an LED chip 306 is embedded in one side of the mounting substrate 301; the reflector 303 is an arc-shaped concave surface as a whole, and the arc curvatures of the opposite side walls of the reflector 303 are different, and the inner wall of the reflector 303 is a diamond-shaped polyhedron structure;

[0022] The specific operation is as follows: the mounting groove 302 inside the mounting substrate 301 is used to install the LED light strip 304, and the heat dissipation fins 305 on both sides of the outside can perform preliminary heat dissipation for the mounting substrate 301 and the LED light strip 304. The arc curvatures of the two opposite side walls of the reflector 303, which is an overall arc-shaped concave surface, are different. The asymmetric setting is conducive to mutual reflection to improve the light diffusion effect. At the same time, the inner wall of the reflector 303 is a diamond-shaped polyhedron structure that can further reflect and enhance the light effect, which is conducive to improving the illumination brightness. In addition, the three LED backlight source assemblies 3 are convenient for enhancing the light-emitting effect. The mounting frames 2 on both sides are connected to the LED backlight source assemblies 3 by bolts to facilitate the installation of the LED backlight source assemblies 3.

[0023] like Figure 3-Figure 4As shown, side bottom plates 4 are fixed below both sides of the shell 1, and a micro cooling fan 5 is installed on the inner side of the middle part of the side bottom plates 4; a low-temperature heat dissipation component 6 is arranged below the shell 1, and the low-temperature heat dissipation component 6 includes a heat conduction plate 601 and a water cooling box 602, the heat conduction plate 601 is embedded in the middle part of the shell 1, and the water cooling box 602 is fixed below the heat conduction plate 601; the low-temperature heat dissipation component 6 also includes a water cooling heat dissipation block 603, and the water cooling heat dissipation block 603 is integrally arranged below the water cooling box 602, and the water cooling box 602 and the water cooling heat dissipation block 603 are connected to each other;

[0024] The specific operation is as follows: the heat conduction plate 601 is used to conduct heat to the LED backlight source component 3, and the water cooling box 602 has built-in water cooling liquid for heat exchange and cooling of the heat conduction plate 601, thereby realizing cooling of the LED backlight source component 3. The water cooling box 602 is interconnected with multiple water cooling heat sinks 603 distributed equidistantly below, so that ventilation and heat dissipation can be achieved between the water cooling heat sinks 603, and heat is taken away by airflow. At the same time, the micro cooling fans 5 on both sides can further ventilate and dissipate heat to the water cooling box 602 and the water cooling heat sink 603, so that the water cooling box 602 and the water cooling heat sink 603 maintain a low temperature state and continue to exchange heat with the LED backlight source component 3 through the heat conduction plate 601.

[0025] In summary, if Figure 1-Figure 4 As shown, the low-temperature heat dissipation type LED backlight source, when in use, firstly, the LED backlight source assembly 3 can be connected to the mounting frames 2 on both sides by bolts, and the LED light strip 304 in the placement groove 302 inside the mounting substrate 301 is used for emitting light, at this time, the arc curvatures of the two opposite side walls of the reflector 303 which is an arc-shaped concave surface as a whole are different, and the asymmetric arrangement is conducive to mutual reflection to improve the light diffusion effect, and at the same time, the inner wall of the reflector 303 is a diamond-shaped polyhedron structure, which can further reflect and enhance the light effect, thereby facilitating the improvement of the illumination brightness, and the three LED backlight source assemblies 3 are convenient for enhancing the light-emitting effect;

[0026] During use, the heat dissipation fins 305 on both sides of the outside can perform preliminary heat dissipation on the mounting substrate 301 and the LED light strip 304, and then the heat conducting plate 601 can conduct heat to the LED backlight source assembly 3. The water cooling box 602 has built-in water cooling liquid for heat exchange and cooling of the heat conducting plate 601, thereby achieving cooling of the LED backlight source assembly 3. The water cooling box 602 is interconnected with multiple water cooling heat sinks 603 distributed equidistantly below, so that ventilation and heat dissipation can be achieved between the water cooling heat sinks 603, and heat is taken away by airflow. At the same time, the micro cooling fans 5 on both sides can further ventilate and dissipate heat for the water cooling box 602 and the water cooling heat sink 603, so that the water cooling box 602 and the water cooling heat sink 603 remain in a low temperature state and continue to exchange heat with the LED backlight source assembly 3 through the heat conducting plate 601, thus completing the use process of the low-temperature heat dissipation type LED backlight source.

[0027] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A low-temperature heat dissipation type LED backlight source, comprising a housing (1), a mounting frame (2) and an LED backlight source assembly (3), characterized in that: The housing (1) has mounting frames (2) fixed on both left and right sides thereof, and an LED backlight source assembly (3) is arranged inside between the mounting frames (2); the LED backlight source assembly (3) comprises a mounting substrate (301), a mounting groove (302), a reflector (303), an LED light bar (304), a heat dissipation fin (305) and an LED chip (306); the mounting substrate (301) is in a rectangular structure, and a mounting groove (302) is arranged inside the mounting substrate (301); a reflector (303) is fixed on the inner wall of the mounting groove (302), and an LED light bar (304) is installed in the middle of the mounting groove (302); heat dissipation fins (305) are fixed on both sides of the outside of the mounting substrate (301), and an LED chip (306) is embedded in one side of the mounting substrate (301).

2. The low-temperature heat dissipation LED backlight source according to claim 1, characterized in that: The installation frame (2) is in a "U"-shaped structure, and the installation frame (2) and the LED backlight source assembly (3) are connected by bolts.

3. The low-temperature heat dissipation LED backlight source according to claim 1, characterized in that: The reflective plate (303) is an overall arc-shaped concave surface, and the arc curvatures of two opposing side walls of the reflective plate (303) are different, and the inner wall of the reflective plate (303) is a diamond-shaped polyhedron structure.

4. The low-temperature heat dissipation LED backlight source according to claim 1, characterized in that: Side bottom plates (4) are fixed below both sides of the housing (1), and a micro cooling fan (5) is installed inside the middle of the side bottom plates (4).

5. The low-temperature heat dissipation LED backlight source according to claim 1, characterized in that: A low-temperature heat dissipation component (6) is arranged below the shell (1), and the low-temperature heat dissipation component (6) comprises a heat conduction plate (601) and a water cooling box (602), the heat conduction plate (601) is embedded in the middle part of the shell (1), and the water cooling box (602) is fixed below the heat conduction plate (601).

6. The low-temperature heat dissipation LED backlight source according to claim 5, characterized in that: The low-temperature heat dissipation component (6) further comprises a water-cooled heat dissipation block (603), and the water-cooled heat dissipation block (603) is integrally arranged below the water-cooled box (602), and the water-cooled box (602) and the water-cooled heat dissipation block (603) are interconnected.

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