Heat dissipation device

Abstract

The utility model discloses a heat dissipation device, and relates to the technical field of LED backlight modules, the heat dissipation device comprises a backlight module bottom plate, a plurality of LED lamp strips are fixedly installed on the rear surface of the backlight module bottom plate at equal intervals, and rectangular grooves are formed in the front side and the rear side of the rear surface of the backlight module bottom plate. Rectangular side plates are slidably mounted in the two rectangular grooves in an inserted mode, heat dissipation mechanisms are arranged on the two rectangular side plates and used for transmitting heat generated by the outer surface of the LED lamp strip outwards so as to increase the heat dissipation speed, and two clamping rods are pushed into corresponding round holes through two connecting rods so that the heat dissipation speed can be increased. When the clamping grooves in the connecting rods move to the positions where the clamping rods are located, the two reset springs contract to drive the two limiting balls to move close to each other, then the two clamping rods are driven to enter the corresponding clamping grooves, installation can be completed, operation is easy, and the cooling fins are convenient to maintain; and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of LED backlight modules, in particular to a heat dissipation device. Background Art

[0002] As a light source, the backlight module is one of the important components of the liquid crystal display. It is divided into different types according to the different light-emitting elements. Among them, LED lamps have the characteristics of low operating voltage, active light emission, brightness adjustable by voltage (or current), impact resistance, vibration resistance and long life, making them one of the most promising light-emitting elements of the backlight module.

[0003] Existing LED backlight modules usually use heat sinks for heat dissipation. After long-term use, dust will accumulate on the surface of the heat sink, and the intervals between adjacent heat sinks are small, resulting in dust at the bottom of the intervals being difficult to clean. Existing heat sinks are usually fixed to the LED backlight modules by bolts, which makes it inconvenient to maintain the heat sink, thereby reducing the heat dissipation effect of the device and having low practicality. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a heat dissipation device capable of solving the problem that the existing LED backlight module usually uses a heat sink to dissipate heat, and dust will accumulate on the surface of the heat sink after long-term use, and the intervals between adjacent heat sinks are small, resulting in dust at the bottom of the intervals being difficult to clean, and the existing heat sink is usually fixed on the LED backlight module by bolts, which makes it inconvenient to maintain the heat sink, thereby reducing the heat dissipation effect of the device and having low practicality.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heat dissipation device, including a backlight module base plate, a plurality of LED light strips are fixedly installed at equal distances on the rear surface of the backlight module base plate, rectangular grooves are provided on the front and rear sides of the rear surface of the backlight module base plate, rectangular side panels are inserted and slidably installed inside the two rectangular grooves, and a heat dissipation mechanism is provided on the two rectangular side panels, which is used to transfer the heat generated on the outer surface of the LED light strip to the outside to accelerate the heat dissipation speed.

[0008] Preferably, the heat dissipation mechanism includes a heat dissipation base plate, which is fixedly mounted on one end of the two rectangular side plates away from the rectangular groove, and a plurality of heat dissipation fins are fixedly mounted at equal distances on the rear surface of the heat dissipation base plate, and three heat dissipation grooves are evenly spaced on the plurality of heat dissipation fins.

[0009] Preferably, copper heat sinks are fixedly mounted on the front surface of the heat dissipation base plate at positions corresponding to the plurality of LED light strips, and a plurality of heat conduction holes are opened on the plurality of copper heat sinks.

[0010] Preferably, the front surfaces of several of the copper heat sinks are in contact with the rear surfaces of the corresponding LED light strips, and a layer of thermal conductive silicone grease is coated on the contact surface between the copper heat sink and the LED light strip.

[0011] Preferably, connecting rods are fixedly installed on both upper and lower sides of the front surface of the heat dissipation bottom plate, and the outer surfaces of the two connecting rods are provided with a clamping groove on the side away from each other;

[0012] Among them, connecting grooves are opened at the positions corresponding to the two connecting rods on the rear surface of the backlight module base plate, and circular holes are opened at the positions corresponding to the two clamping grooves on the upper and lower surfaces of the backlight module base plate. The two circular holes are communicated with the corresponding connecting grooves, and clamping rods are inserted and slidably installed inside the two circular holes.

[0013] Preferably, the ends of the two clamping rods away from the connecting groove are fixedly installed with limiting balls, and the opposite ends of the two limiting balls are fixedly installed with return springs, and the opposite ends of the two return springs are fixedly connected to the upper and lower surfaces of the backlight module bottom plate respectively;

[0014] The opposite ends of the two clamping rods extend to the inside of the corresponding connecting groove, and the opposite ends of the two clamping rods are inclined.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] (1) The heat dissipation device can quickly disassemble and install the heat dissipation base plate and the heat dissipation fins by arranging the connecting rod, the clamping groove, the connecting groove, the clamping rod, the limit ball, the reset spring and the round hole, which is convenient for the maintenance of the heat dissipation fins, ensures the heat dissipation effect of the device, and improves the practicality of the device.

[0018] (2) The heat dissipation device utilizes a copper heat sink to fit the rear surface of the LED light strip, and a layer of thermal conductive silicone grease is applied on the contact surface between the copper heat sink and the LED light strip, so that the heat generated by the LED light strip is more effectively transferred to the copper heat sink, and then transferred to the heat dissipation base plate through the copper heat sink, and then transferred to a plurality of heat dissipation fins by the heat dissipation base plate, and then to the surrounding air through a plurality of heat dissipation fins. The heat dissipation fins are provided with heat dissipation grooves, thereby increasing the heat dissipation area of ​​the heat dissipation fins and improving the heat dissipation effect of the heat dissipation fins. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 This is a schematic diagram of the structure of a heat dissipation device of the utility model;

[0021] Figure 2 This is a schematic diagram of the separation structure of the utility model;

[0022] Figure 3 for Figure 2 The enlarged schematic diagram at A in the middle;

[0023] Figure 4 for Figure 2 The enlarged schematic diagram of point B in the middle;

[0024] Figure 5 This is a schematic diagram of the separation structure of the utility model from another angle.

[0025] Figure numerals: 1. backlight module base plate; 2. LED light strip; 3. rectangular groove; 4. rectangular side plate; 5. heat dissipation base plate; 6. heat dissipation fins; 7. heat dissipation groove; 8. copper heat sink; 9. thermal conductive hole; 10. connecting rod; 11. snap-in groove; 12. connecting groove; 13. snap-in rod; 14. limiting ball; 15 reset spring; 16. round hole. DETAILED DESCRIPTION

[0026] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0027] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the present utility model, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] See also Figure 1-5 The utility model provides a technical solution: a heat dissipation device, including a backlight module bottom plate 1, a plurality of LED light strips 2 are fixedly installed at equal distances on the rear surface of the backlight module bottom plate 1, rectangular grooves 3 are opened on the front and rear sides of the rear surface of the backlight module bottom plate 1, rectangular side plates 4 are inserted and slidably installed inside the two rectangular grooves 3, and a heat dissipation mechanism is arranged on the two rectangular side plates 4, which is used to transfer the heat generated on the outer surface of the LED light strip 2 to the outside to accelerate the heat dissipation speed.

[0031] Furthermore, the heat dissipation mechanism includes a heat dissipation base plate 5, which is fixedly mounted on one end of the two rectangular side plates 4 away from the rectangular groove 3, and a plurality of heat dissipation fins 6 are fixedly mounted at equal distances on the rear surface of the heat dissipation base plate 5, and three heat dissipation grooves 7 are evenly spaced on the plurality of heat dissipation fins 6.

[0032] Furthermore, copper heat sinks 8 are fixedly mounted on the front surface of the heat dissipation base plate 5 at positions corresponding to the plurality of LED light strips 2 , and a plurality of heat conduction holes 9 are formed on the plurality of copper heat sinks 8 .

[0033] Furthermore, the front surfaces of a plurality of copper heat sinks 8 are in contact with the rear surfaces of the corresponding LED light strips 2 , and a layer of thermal conductive silicone grease is coated on the contact surface between the copper heat sink 8 and the LED light strip 2 .

[0034] Furthermore, connecting rods 10 are fixedly installed on both upper and lower sides of the front surface of the heat dissipation base plate 5, and the outer surfaces of the two connecting rods 10 are provided with a clamping groove 11 on the side away from each other;

[0035] Among them, connecting grooves 12 are opened at the positions of the two connecting rods 10 on the rear surface of the backlight module base plate 1, and circular holes 16 are opened at the positions of the two clamping grooves 11 on the upper and lower surfaces of the backlight module base plate 1. The two circular holes 16 are communicated with the corresponding interiors of the connecting grooves 12, and the interiors of the two circular holes 16 are both inserted and slidably installed with clamping rods 13.

[0036] Furthermore, the two clamping rods 13 are fixedly mounted with a limiting ball 14 at one end away from the connecting groove 12, and the opposite ends of the two limiting balls 14 are fixedly mounted with a return spring 15, and the opposite ends of the two return springs 15 are fixedly connected to the upper and lower surfaces of the backlight module bottom plate 1 respectively;

[0037] The heat dissipation of the LED light strip 2 is greatly improved by the heat dissipation of the LED light strip 2. When the rod 10 is detached from the inside of the connecting groove 12, the disassembly of the heat dissipation base plate 5 is completed. After the outer surface of the heat dissipation fin 6 is cleaned, the two connecting rods 10 on the heat dissipation base plate 5 are inserted into the corresponding connecting grooves 12, and the two rectangular side panels 4 are inserted into the two rectangular grooves 3. By setting the rectangular side panels 4 and the rectangular grooves 3, the stability of the connection between the heat dissipation base plate 5 and the backlight module base plate 1 is improved. The two connecting rods 10 are inserted into the inside of the connecting grooves 12. Since the bottom ends of the two clamping rods 13 are both inclined, the two connecting rods 10 push the two clamping rods 13 into the corresponding circular holes 16 and extend the corresponding return springs 15. When the clamping grooves 11 on the connecting rods 10 move to the position where the clamping rods 13 are in, the two return springs 15 contract and drive the two limit balls 14 to move closer to each other, thereby driving the two clamping rods 13 to enter the corresponding clamping grooves 11, and the installation is completed. The operation is simple, it is convenient to maintain the heat dissipation fins 6, and the practicability of the device is improved.

[0038] Working principle: When using this device, the LED light strip 2 will generate heat in the working state. By using the copper heat sink 8 to fit the rear surface of the LED light strip 2 and applying a layer of thermal conductive silicone grease on the contact surface of the copper heat sink 8 and the LED light strip 2, the heat emitted by the LED light strip 2 can be more effectively conducted to the copper heat sink 8, and then transferred to the heat dissipation base plate 5 through the copper heat sink 8, and then transferred to a plurality of heat dissipation fins 6 by the heat dissipation base plate 5, and then to the surrounding air through a plurality of heat dissipation fins 6, wherein the heat dissipation grooves 7 are opened on the heat dissipation fins 6, thereby increasing the heat dissipation area of ​​the heat dissipation fins 6 and improving the heat dissipation effect of the heat dissipation fins 6.

[0039] When dust falls on the outer surface of the heat sink 6 and needs to be cleaned, the two limiting balls 14 are pulled outward, and the movement of the limiting balls 14 drives the clamping rod 13 to move, and the clamping rod 13 is moved out from the inside of the clamping groove 11, so that the connecting rod 10 is disengaged from the inside of the connecting groove 12, and the heat sink 5 can be disassembled. After the outer surface of the heat sink fin 6 is cleaned, the two connecting rods 10 on the heat sink 5 are inserted into the corresponding connecting grooves 12, and the two rectangular side panels 4 are inserted into the two rectangular grooves 3. By setting the rectangular side panels 4 and the rectangular grooves 3, the heat sink 5 and the backlight module bottom plate are improved. 1. The stability of the connection. The two connecting rods 10 are inserted into the interior of the connecting groove 12. Since the bottom ends of the two clamping rods 13 are both inclined, the two connecting rods 10 push the two clamping rods 13 into the corresponding circular holes 16, and extend the corresponding reset springs 15. When the clamping groove 11 on the connecting rod 10 moves to the position of the clamping rod 13, the two reset springs 15 contract and drive the two limit balls 14 to move closer, thereby driving the two clamping rods 13 to enter the corresponding clamping groove 11, and the installation is completed. The operation is simple, the heat dissipation fins 6 are easy to maintain, and the practicality of the device is improved.

[0040] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A heat dissipation device, comprising a backlight module bottom plate (1), a plurality of LED light strips (2) being fixedly mounted at equal distances on the rear surface of the backlight module bottom plate (1), a rectangular groove (3) being provided on both the front and rear sides of the rear surface of the backlight module bottom plate (1), a rectangular side plate (4) being inserted and slidably mounted inside the two rectangular grooves (3), characterized in that: The two rectangular side panels (4) are provided with a heat dissipation mechanism, which is used to transfer the heat generated by the outer surface of the LED light strip (2) to the outside, thereby accelerating the heat dissipation speed; The heat dissipation mechanism comprises a heat dissipation base plate (5), the heat dissipation base plate (5) being fixedly mounted on one end of the two rectangular side plates (4) away from the rectangular groove (3), a plurality of heat dissipation fins (6) being fixedly mounted at equal distances on the rear surface of the heat dissipation base plate (5), and three heat dissipation grooves (7) being evenly spaced apart on the plurality of heat dissipation fins (6); Copper heat sinks (8) are fixedly mounted on the front surface of the heat dissipation base plate (5) at positions corresponding to the plurality of LED light strips (2), and a plurality of heat conduction holes (9) are provided on the plurality of copper heat sinks (8); The front surfaces of a plurality of the copper heat sinks (8) are in contact with the rear surfaces of the corresponding LED light strips (2), and a layer of thermal conductive silicone grease is coated on the contact surfaces between the copper heat sinks (8) and the LED light strips (2); Connecting rods (10) are fixedly mounted on both upper and lower sides of the front surface of the heat dissipation base plate (5), and the outer surfaces of the two connecting rods (10) are provided with a clamping groove (11) on the side away from each other; Wherein, the rear surface of the backlight module base plate (1) is provided with connection grooves (12) at positions corresponding to the two connection rods (10), and the upper and lower surfaces of the backlight module base plate (1) are provided with circular holes (16) at positions corresponding to the two clamping grooves (11), the two circular holes (16) are communicated with the inside of the corresponding connection grooves (12), and the inside of the two circular holes (16) is inserted and slidably installed with clamping rods (13).

2. A heat dissipation device according to claim 1, characterized in that: A limiting ball (14) is fixedly mounted on one end of the two clamping rods (13) away from the connection groove (12), and a return spring (15) is fixedly mounted on the opposite ends of the two limiting balls (14), and the opposite ends of the two return springs (15) are respectively fixedly connected to the upper and lower surfaces of the backlight module bottom plate (1); Wherein, the opposite ends of the two clamping rods (13) extend to the inside of the corresponding connecting groove (12), and the opposite ends of the two clamping rods (13) are both arranged with inclined surfaces.

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