Heat dissipation structure of LED lamp backlight device

Abstract

The utility model discloses a heat dissipation structure of an LED (light-emitting diode) lamp backlight device, which belongs to the technical field of LED lamps and is characterized by comprising a lamp shell, a liquid cooling component is fixedly connected to the rear side of the lamp shell, an air cooling component is fixedly connected to the rear side of the liquid cooling component, the liquid cooling component comprises a heat dissipation frame, the heat dissipation frame is fixedly connected to the rear side of the lamp shell, and the air cooling component is fixedly connected to the rear side of the lamp shell. According to the high-power LED lamp, the liquid cooling assembly is arranged for heat dissipation, the situation that the heat dissipation efficiency is insufficient as a natural heat dissipation mode occurs when the high-power LED lamp faces a high-power LED lamp is avoided, meanwhile, the requirement for the surrounding environment is low, the heat dissipation efficiency is high, and the service life of the high-power LED lamp is prolonged. Efficient heat dissipation can still be kept under the high-temperature conditions such as summer, the air cooling assembly is arranged to be matched with the liquid cooling assembly, heat exchange between cooling liquid in the liquid cooling assembly and air is facilitated, meanwhile, heat dissipation is assisted, and the overall heat dissipation effect is improved.

Description

Technical Field

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

[0002] The LED lamp is an electroluminescent semiconductor material chip, which is cured to the bracket with silver glue or white glue, and then connected to the chip and circuit board with silver wire or gold wire. It is sealed with epoxy resin on all sides to protect the internal core wire, and finally the outer shell is installed, so the LED lamp has good earthquake resistance.

[0003] Existing LED backlight devices usually use natural heat dissipation, which is not ideal for larger LED lamps.

[0004] The existing patent (publication number: CN219140719U) provides a heat dissipation structure of an LED lamp backlight device. The heat dissipation structure of the LED lamp backlight device uses a heat spreader and heat dissipation fins to facilitate the heat dissipation efficiency to be improved. The heat is then absorbed by the heat dissipation fins, and the heat is quickly carried away from the heat dissipation fins by the heat dissipation fan to ensure the overall heat dissipation effect, thereby solving the problem that the LED lamp backlight device usually adopts natural heat dissipation, and this heat dissipation mode is not ideal on larger LED lamps.

[0005] In view of the above problems, existing patents have provided solutions. However, at present, when LED lamps dissipate heat through natural heat dissipation, the heat dissipation speed is relatively slow, and it is difficult to cope with the large amount of heat generated by high-power LED lamps. At the same time, when the ambient temperature is high in summer, the effect of natural heat dissipation will be significantly reduced. When auxiliary heat dissipation is performed by fans, the location where the fans are set may have local temperature unevenness. At the same time, the heat dissipation efficiency may be insufficient when facing high-power LEDs.

[0006] Therefore, a heat dissipation structure of an LED lamp backlight device is proposed. Utility Model Content

[0007] The purpose of the utility model is to provide a heat dissipation structure of an LED lamp backlight device, which can solve the problem that when the existing LED lamp dissipates heat through natural heat dissipation, the heat dissipation speed is relatively slow, and it is difficult to cope with the large amount of heat generated by high-power LED lamps. At the same time, when the ambient temperature is high in summer, the effect of natural heat dissipation will be significantly reduced, and when auxiliary heat dissipation is performed by a fan, the position where the fan is set may have local temperature unevenness and the heat dissipation efficiency may be insufficient when facing high-power LEDs.

[0008] To achieve the above object, the utility model provides the following technical solution: a heat dissipation structure of an LED backlight device, comprising a lamp housing, a liquid cooling component is fixedly connected to the rear side of the lamp housing, and an air cooling component is fixedly connected to the rear side of the liquid cooling component;

[0009] The liquid cooling assembly includes a heat sink, which is fixedly connected to the rear side of the lamp housing, a heat sink is fixedly connected to the interior of the heat sink, a heat exchange tube is fixedly connected to the interior of the heat sink, a support plate is fixedly connected to the right side of the heat sink, a water tank is fixedly connected to the top of the support plate, and the side of the water tank close to the heat exchange tube is fixedly connected to the heat exchange tube.

[0010] Preferably, the air cooling component includes a fixing frame, the fixing frame is bolted to the rear side of the heat dissipation frame, a motor is fixedly connected to the interior of the heat dissipation frame, a fan blade is fixedly connected to the output end of the motor, and the fan blade is rotatably connected to the interior of the fixing frame.

[0011] Preferably, a mounting hole is provided inside the fixing frame, a fixing bolt is movably connected inside the mounting hole, a fixing hole for use with the fixing bolt is provided inside the heat dissipation frame, the fixing bolt passes through the fixing frame and extends to the inside of the heat dissipation frame, and the fixing bolt is threadedly connected to the heat dissipation frame.

[0012] Preferably, the heat dissipation frame is fixedly connected to a support frame inside, the motor is fixedly connected to the inside of the support frame, the heat dissipation frame and the fixed frame are both provided with air ducts for use with fan blades, and the fan blades are rotatably connected to the inside of the air duct.

[0013] Preferably, the number of the heat exchange tubes is set to be several and evenly distributed inside the heat sink, the surface of the heat exchange tube is fixedly connected with a connecting pipe, the connecting pipe is fixedly connected to the inside of the heat sink, and the top of the support plate is fixedly connected with a circulating pump.

[0014] Preferably, the top of the circulating pump is fixedly connected to a water inlet pipe, and the side of the water inlet pipe close to the water tank is fixedly connected to the water tank. The output end of the circulating pump is fixedly connected to a water supply pipe, and the water supply pipe passes through the water tank and extends to the interior of the water tank. The side of the water supply pipe close to the heat exchange tube is fixedly connected to the heat exchange tube.

[0015] Preferably, a lamp board is fixedly connected to the interior of the lamp housing, a heat conducting plate is fixedly connected to the rear side of the lamp board, and a side of the heat conducting plate close to the heat sink is fixedly connected to the heat sink.

[0016] Preferably, lamp beads are fixedly connected to the surface of the lamp board, and the number of the lamp beads is set to be several and evenly distributed on the surface of the lamp board.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. This application dissipates heat by setting up a liquid cooling component to avoid the situation where the heat dissipation efficiency is insufficient when facing high-power LED lamps, such as the natural heat dissipation method. At the same time, the requirements for the surrounding environment are low, and high-efficiency heat dissipation can still be maintained in high temperature conditions such as summer;

[0019] 2. The present application realizes coordination with the liquid cooling component by setting up an air cooling component, so as to facilitate heat exchange between the coolant in the liquid cooling component and the air, and at the same time assist in heat dissipation to improve the overall heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an overall structural diagram of the heat dissipation structure of the LED lamp backlight device of the utility model;

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

[0022] Figure 3 This is a schematic diagram of the structure of the air-cooling component of the utility model;

[0023] Figure 4 This is a connection diagram of the fixing frame of the utility model;

[0024] Figure 5 It is a connection diagram of the water tank of the utility model.

[0025] In the figure, 1. lamp body; 2. liquid cooling component; 201. heat sink; 202. heat sink; 203. heat exchange tube; 204. support plate; 205. water tank; 3. air cooling component; 301. fixing frame; 302. motor; 303. fan blade; 4. mounting hole; 5. fixing bolt; 6. fixing hole; 7. support frame; 8. air duct; 9. connecting pipe; 10. circulation pump; 11. water inlet pipe; 12. water delivery pipe; 13. lamp board; 14. heat conduction plate; 15. lamp beads. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-5 , the utility model provides a technical solution:

[0028] A heat dissipation structure of an LED backlight device comprises a lamp housing 1, a liquid cooling component 2 is fixedly connected to the rear side of the lamp housing 1, and an air cooling component 3 is fixedly connected to the rear side of the liquid cooling component 2;

[0029] The liquid cooling assembly 2 includes a heat sink 201, which is fixedly connected to the rear side of the lamp housing 1. A heat sink 202 is fixedly connected to the interior of the heat sink 201, and a heat exchange tube 203 is fixedly connected to the interior of the heat sink 202. A support plate 204 is fixedly connected to the right side of the heat sink 201, and a water tank 205 is fixedly connected to the top of the support plate 204. The side of the water tank 205 close to the heat exchange tube 203 is fixedly connected to the heat exchange tube 203.

[0030] In this embodiment: the liquid cooling component 2 is fixed by the lamp housing 1, and the air cooling component 3 is fixed by the liquid cooling component 2, and the liquid cooling component 2 is used to dissipate heat at the same time, and then the air cooling component 3 is used to assist the liquid cooling component 2 in dissipating heat, thereby improving the overall heat dissipation efficiency, the heat sink 201 is fixed by the lamp housing 1, and the heat sink 202 is fixed by the heat sink 201, and then the heat exchange tube 203 is fixed by the heat sink 202, and the heat exchange tube 203 cooperates with the heat sink 202 to perform heat exchange, and then the heat exchange tube 203 is used to limit the flow range of the coolant, and then the support plate 204 is fixed by the heat sink 201, and the water tank 205 is fixed by the support plate 204, so that the water tank 205 can store the coolant and achieve the effect of heat dissipation in cooperation with the heat exchange tube 203.

[0031] Specifically, Figure 3 As shown, the air cooling component 3 includes a fixing frame 301, which is bolted to the rear side of the heat dissipation frame 201, and a motor 302 is fixedly connected to the inside of the heat dissipation frame 201. The output end of the motor 302 is fixedly connected to the fan blade 303, and the fan blade 303 is rotatably connected to the inside of the fixing frame 301.

[0032] Specifically, Figure 3 , Figure 4 As shown, a mounting hole 4 is provided inside the fixing frame 301, and a fixing bolt 5 is movably connected inside the mounting hole 4. A fixing hole 6 used in conjunction with the fixing bolt 5 is provided inside the heat dissipation frame 201. The fixing bolt 5 penetrates the fixing frame 301 and extends to the inside of the heat dissipation frame 201. The fixing bolt 5 is threadedly connected to the heat dissipation frame 201.

[0033] Specifically, Figure 3 , Figure 4 As shown, the interior of the heat dissipation frame 201 is fixedly connected to the support frame 7, the motor 302 is fixedly connected to the interior of the support frame 7, and the interiors of the heat dissipation frame 201 and the fixed frame 301 are both provided with air ducts 8 for use with the fan blades 303, and the fan blades 303 are rotatably connected to the interior of the air duct 8.

[0034] In this embodiment: the fixing frame 301 is fixed by the heat dissipation frame 201, and the working position of the motor 302 is fixed by the fixing frame 301, and then the fan blade 303 is fixed by the output end of the motor 302, so as to realize the rotation effect of the fan blade 303, and the fan blade 303 is used to drive the air flow, so as to cooperate with the heat sink 202 to realize the heat exchange of the heat exchange tube 203, so as to dissipate heat, and then the installation hole 4 opened in the fixing frame 301 is used to achieve the effect of limiting the working position of the fixing bolt 5, and the fixing hole 6 opened inside the heat dissipation frame 201 cooperates with the fixing bolt 5, so as to facilitate the fixing bolt 5 to install the fixing frame 301 at the specified position.

[0035] Specifically, Figure 5 As shown, the number of heat exchange tubes 203 is set to be several and evenly distributed inside the heat sink 202. The surface of the heat exchange tube 203 is fixedly connected with a connecting tube 9, and the connecting tube 9 is fixedly connected to the inside of the heat sink 202. The top of the support plate 204 is fixedly connected with a circulating pump 10.

[0036] Specifically, Figure 5 As shown, the top of the circulation pump 10 is fixedly connected to a water inlet pipe 11, and the side of the water inlet pipe 11 close to the water tank 205 is fixedly connected to the water tank 205, and the output end of the circulation pump 10 is fixedly connected to a water delivery pipe 12, which passes through the water tank 205 and extends to the interior of the water tank 205, and the side of the water delivery pipe 12 close to the heat exchange tube 203 is fixedly connected to the heat exchange tube 203.

[0037] In this embodiment: the number of heat exchange tubes 203 is set to be several so as to improve the heat dissipation efficiency, and then the connecting tube 9 is fixed by the heat exchange tube 203 to achieve the connection between the heat exchange tubes 203 to facilitate the flow of coolant, and then the circulation pump 10 is fixed by the support plate 204, and the water inlet pipe 11 is fixed by the circulation pump 10 to facilitate the coolant to enter the circulation pump 10, and the water delivery pipe 12 is fixed by the circulation pump 10, and then the water delivery pipe 12 is fixedly connected with the heat exchange tube 203 to facilitate the circulation pump 10 to deliver the coolant to the heat exchange tube 203.

[0038] Specifically, Figure 1 , Figure 2 As shown, a lamp board 13 is fixedly connected inside the lamp housing 1 , a heat conducting plate 14 is fixedly connected to the rear side of the lamp board 13 , and a side of the heat conducting plate 14 close to the heat sink 202 is fixedly connected to the heat sink 202 .

[0039] Specifically, Figure 1 As shown, lamp beads 15 are fixedly connected to the surface of the lamp board 13 , and the number of the lamp beads 15 is set to be several and evenly distributed on the surface of the lamp board 13 .

[0040] In this embodiment: the lamp board 13 is fixed by the lamp housing 1, and the heat conducting plate 14 is fixed by the lamp board 13, so that the heat conducting plate 14 is fixedly connected to the heat sink 202, so that the heat of the lamp board 13 is transferred, thereby facilitating heat dissipation, and then the lamp bead 15 is fixed by the lamp board 13, so as to facilitate the operation of the lamp bead 15.

[0041] Working principle: During the use of the LED backlight device, heat is gradually generated as the use time increases. At this time, the circulation pump 10 is started by an external power supply to pump the coolant in the circulation pump 10 into the heat exchange tube 203. Since the heat exchange tube 203 is fixedly connected to the inside of the heat sink 202 and is fixedly connected to the heat conduction plate 14 through the heat sink 202, the heat generated during the working process is transferred to the heat sink 202 through the heat conduction plate 14 and dissipated through the heat sink 202. At the same time, the heat exchange tube 203 fixed inside the heat sink 202 gradually rises. The temperature causes the internal coolant temperature to rise. As the coolant heats up, it continues to flow in the heat exchange tube 203, thereby taking away the heat. At the same time, the motor 302 is started by an external power supply to drive the fan blades 303 to rotate. At this time, the air around the heat sink 202 is accelerated to circulate, thereby improving the heat exchange efficiency between the heat sink 202 and the air. At the same time, the coolant inside the heat exchange tube 203 exchanges heat with the heat sink 202 and finally enters the water tank 205, completing a cooling cycle. In this process, the backlight device completes heat dissipation to avoid overheating.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat dissipation structure of an LED backlight device, comprising a lamp housing (1), characterized in that: The rear side of the lamp housing (1) is fixedly connected to a liquid cooling component (2), and the rear side of the liquid cooling component (2) is fixedly connected to an air cooling component (3); The liquid cooling component (2) comprises a heat sink (201), the heat sink (201) is fixedly connected to the rear side of the lamp housing (1), a heat sink (202) is fixedly connected inside the heat sink (201), a heat exchange tube (203) is fixedly connected inside the heat sink (202), a support plate (204) is fixedly connected to the right side of the heat sink (201), a water tank (205) is fixedly connected to the top of the support plate (204), and a side of the water tank (205) close to the heat exchange tube (203) is fixedly connected to the heat exchange tube (203).

2. The heat dissipation structure of the LED backlight device according to claim 1, characterized in that: The air cooling component (3) comprises a fixing frame (301), wherein the fixing frame (301) is bolted to the rear side of the heat dissipation frame (201), a motor (302) is fixedly connected to the interior of the heat dissipation frame (201), a fan blade (303) is fixedly connected to the output end of the motor (302), and the fan blade (303) is rotatably connected to the interior of the fixing frame (301).

3. The heat dissipation structure of the LED backlight device according to claim 2, characterized in that: The fixing frame (301) is provided with a mounting hole (4) inside, and a fixing bolt (5) is movably connected inside the mounting hole (4). The heat dissipation frame (201) is provided with a fixing hole (6) for use with the fixing bolt (5). The fixing bolt (5) passes through the fixing frame (301) and extends to the inside of the heat dissipation frame (201). The fixing bolt (5) is threadedly connected to the heat dissipation frame (201).

4. The heat dissipation structure of the LED backlight device according to claim 3, characterized in that: The heat dissipation frame (201) is fixedly connected to a support frame (7) inside, the motor (302) is fixedly connected to the inside of the support frame (7), and the heat dissipation frame (201) and the fixed frame (301) are both provided with an air duct (8) for use with the fan blade (303), and the fan blade (303) is rotatably connected to the inside of the air duct (8).

5. The heat dissipation structure of the LED backlight device according to claim 1, characterized in that: The number of the heat exchange tubes (203) is set to be several and evenly distributed inside the heat sink (202); the surface of the heat exchange tube (203) is fixedly connected to a connecting tube (9); the connecting tube (9) is fixedly connected to the inside of the heat sink (202); and the top of the support plate (204) is fixedly connected to a circulating pump (10).

6. The heat dissipation structure of the LED backlight device according to claim 5, characterized in that: The top of the circulation pump (10) is fixedly connected to a water inlet pipe (11), and the side of the water inlet pipe (11) close to the water tank (205) is fixedly connected to the water tank (205). The output end of the circulation pump (10) is fixedly connected to a water delivery pipe (12), and the water delivery pipe (12) passes through the water tank (205) and extends to the interior of the water tank (205). The side of the water delivery pipe (12) close to the heat exchange pipe (203) is fixedly connected to the heat exchange pipe (203).

7. The heat dissipation structure of an LED backlight device according to claim 1, characterized in that: A lamp board (13) is fixedly connected to the interior of the lamp housing (1), a heat conducting plate (14) is fixedly connected to the rear side of the lamp board (13), and a side of the heat conducting plate (14) close to the heat sink (202) is fixedly connected to the heat sink (202).

8. The heat dissipation structure of the LED backlight device according to claim 7, characterized in that: Lamp beads (15) are fixedly connected to the surface of the lamp board (13), and the number of the lamp beads (15) is set to be a plurality and evenly distributed on the surface of the lamp board (13).

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