Set top box heat dissipation structure

Abstract

The utility model discloses a heat dissipation structure of a set top box, and relates to the technical field of heat dissipation of the set top box. The cover plate assembly is detachably fixed at the top of the box body; the heat dissipation device is arranged in the box body and is connected with the cover plate assembly; the synchronizing device is mounted on the outer side of the heat dissipation device; the number of the limiting assemblies is two, and the limiting assemblies are installed at the two ends of the interior of the box body correspondingly. According to the utility model, the rotation stopping device is arranged to limit the transmission of the synchronizing device, so that the fans in the heat dissipation device can rotate to dissipate heat according to seasons, the heat dissipation device can start the plurality of fans to dissipate heat simultaneously in hot weather, and the plurality of fans are respectively arranged at the end part and the middle part to dissipate heat inside the set top box in all directions; and meanwhile, the heat dissipation device adopts one driving source, so that synchronous operation of a plurality of fans can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of set-top box heat dissipation, in particular to a set-top box heat dissipation structure. Background Art

[0002] Internet set-top boxes have been widely used in many households or businesses. However, when existing Internet set-top boxes are used in hot seasons, the heat inside them will continue to accumulate. In order to solve this problem, manufacturers usually install small fans inside them to quickly cool down and dissipate heat.

[0003] However, the electrical components inside the network set-top box are usually installed in the middle of the box and arranged at one or both ends, which causes the temperature in the middle of the network set-top box to be higher than the temperature at the ends. As a result, the temperature at the ends of the network set-top box will not be too high when the weather turns cool in winter and the temperature is moderate in spring and autumn, and can be maintained at a safe temperature without the need for a fan to directly dissipate heat. In hot seasons, the heat in the middle will flow to the ends, and the electrical components at the ends will also generate heat. The fan is usually installed in the middle, which will cause the temperature at the ends to be too high, shortening the service life of the electrical components or circuits at the ends under high temperatures.

[0004] Therefore, it is necessary to invent a set-top box heat dissipation structure to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a heat dissipation structure of a set-top box to solve the problem proposed in the above background technology that the internal electrical components of a network set-top box are usually installed in the middle of the box and arranged at one or both ends, which causes the temperature in the middle of the network set-top box to be higher than the temperature at the ends, and causes the temperature at the ends of the network set-top box not to be too high when the weather turns cool in winter and the temperature is moderate in spring and autumn, and can be maintained at a safe temperature without the need for a fan to directly dissipate heat, while in hot seasons the heat in the middle will flow to the ends, and the electrical components at the ends will also generate heat, and the fan is usually arranged in the middle, which will cause the temperature at the ends to be too high, resulting in the problem that the service life of the electrical components or circuits located at the ends is shortened under high temperature.

[0006] To achieve the above object, the utility model provides the following technical solution: a set-top box heat dissipation structure, comprising:

[0007] Box body;

[0008] A cover plate assembly, wherein the cover plate assembly is detachably fixed to the top of the box body;

[0009] A heat dissipation device, which is installed inside the box body and connected to the cover plate assembly;

[0010] A synchronization device, wherein the synchronization device is installed on the outside of the heat dissipation device;

[0011] A limit assembly, wherein two limit assemblies are provided and are respectively installed at two ends of the interior of the box body and are used to squeeze the synchronization device;

[0012] The anti-rotation device is provided with two groups and is respectively fixed to the inner walls at both ends of the box body, and the anti-rotation device is adapted to be a structure for limiting the transmission of the synchronization device;

[0013] The supporting device is provided with three supporting devices, and the three supporting devices are all detachably fixed inside the box body and are used to support the heat dissipation device.

[0014] Optionally, the cover plate assembly includes:

[0015] A cover plate body, wherein the cover plate body is detachably fixed at the opening of the box body;

[0016] A mounting through hole, which is provided in the middle of the cover body and passes through from top to bottom;

[0017] The filter plate is detachably fixed inside the mounting through hole and connected to the heat dissipation device.

[0018] Optionally, the heat dissipation device includes:

[0019] A cooling fan, wherein three cooling fans are provided;

[0020] A transmission shaft, the transmission shaft is fixed inside the cooling fan and is rotatably connected to the supporting device, and the tops of the transmission shaft located at both ends are rotatably connected to the filter plate;

[0021] A driving motor, wherein the output end of the driving motor is connected to the top of the middle transmission shaft and is fixed to the bottom of the filter plate.

[0022] Optionally, the synchronization device includes:

[0023] A driving wheel, the driving wheel is fixed on the outer side of the middle transmission shaft;

[0024] There are two driven wheels, which are respectively fixed on the outside of the transmission shaft at both ends;

[0025] The driving wheel is connected with the two driven wheels through a belt transmission.

[0026] Optionally, the limiting component includes:

[0027] A guide frame, wherein the guide frame is fixed inside the box body and is located between the two cooling fans;

[0028] A sliding device, wherein two sliding devices are provided and are slidably mounted inside the guide frame and in contact with the belt;

[0029] A compression spring, two ends of which are fixedly connected to the sliding device and the inner wall of the box body respectively.

[0030] Optionally, the sliding device includes:

[0031] a movable pulley, the movable pulley being in contact with the belt;

[0032] The sliding plates are provided with two and are rotatably mounted on the top and bottom of the movable pulley respectively, and drive the movable pulley to slide along the guide frame.

[0033] Optionally, the anti-rotation device comprises:

[0034] A telescopic rod, wherein the telescopic rod is fixed on the inner wall of the box body;

[0035] A receiving block, which is fixed to the head of the telescopic rod and slides under the drive of the telescopic rod;

[0036] A rotating column is rotatably mounted on the receiving block and is in contact with the belt.

[0037] Optionally, the supporting device comprises:

[0038] A support plate, the support plate being rotatably mounted on the bottom of the transmission shaft;

[0039] A receiving plate, two ends of which are respectively connected to the supporting plate and the inner wall of the box body.

[0040] Technical effects and advantages of the utility model:

[0041] 1. The utility model can limit the transmission of the synchronization device by setting the anti-rotation device, so that the fan in the heat dissipation device can rotate and dissipate heat according to the season, so that the heat dissipation device starts multiple fans to dissipate heat at the same time in hot weather, and the multiple fans are respectively arranged at the end and the middle to dissipate heat in all directions inside the set-top box, ensuring the uniformity of heat dissipation. At the same time, the heat dissipation device can realize the synchronous operation of multiple fans by using one driving source, and there is no need to set up multiple driving sources to reduce the arrangement of lines. In addition, when the weather turns cool in winter and the temperature is moderate in spring and autumn, the transmission of the end fan is disconnected to reduce the power consumption of the heat dissipation device.

[0042] 2. The utility model can adjust to the needs of the synchronization device through the setting of the limit assembly, so that the synchronization device is partially bent, so that the synchronization device can be normally opened by the anti-rotation device and can transmit normally when the opening is released. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1This is a schematic diagram of the main structure of the utility model;

[0044] Figure 2 This is a schematic diagram of the internal structure of the box body of the utility model;

[0045] Figure 3 This is a schematic diagram of the two driven wheels of the utility model being driven;

[0046] Figure 4 This is a schematic diagram of a driven wheel of the utility model being driven;

[0047] Figure 5 This is a schematic diagram of the utility model in which the driven wheel is not driven;

[0048] Figure 6 It is a schematic diagram of the structure of the sliding device of the utility model.

[0049] In the figure: 100, box body;

[0050] 200, cover plate assembly; 210, cover plate body; 220, mounting through hole; 230, filter plate;

[0051] 300, heat dissipation device; 310, cooling fan; 320, transmission shaft; 330, driving motor;

[0052] 400, synchronization device; 410, driving wheel; 420, driven wheel; 430, belt;

[0053] 500, limit assembly; 510, guide frame; 520, sliding device; 521, movable pulley; 522, sliding plate; 530, compression spring;

[0054] 600, anti-rotation device; 610, telescopic rod; 620, receiving block; 630, rotating column;

[0055] 700, supporting device; 710, supporting plate; 720, receiving plate. DETAILED DESCRIPTION

[0056] 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.

[0057] The utility model provides Figure 1-6 A set-top box heat dissipation structure shown includes:

[0058] Box body 100;

[0059] A cover assembly 200, the cover assembly 200 is detachably fixed on the top of the box body 100;

[0060] The heat dissipation device 300 is installed inside the box body 100 and connected to the cover assembly 200;

[0061] A synchronization device 400, wherein the synchronization device 400 is installed outside the heat dissipation device 300;

[0062] The limiting assembly 500 is provided with two limiting assemblies 500, and is respectively installed at two ends of the interior of the box body 100, and is used to squeeze the synchronization device 400;

[0063] The anti-rotation device 600 is provided with two groups and is respectively fixed to the inner walls at both ends of the box body 100. The anti-rotation device 600 is adapted to be a structure for limiting the transmission of the synchronization device 400;

[0064] The supporting device 700 is provided with three supporting devices 700 . The three supporting devices 700 can be detachably fixed inside the box body 100 and used to support the heat dissipation device 300 .

[0065] Among them, the setting of the anti-rotation device 600 can limit the transmission of the synchronization device 400, so that the fan in the heat dissipation device 300 can rotate and dissipate heat according to the season, so that the heat dissipation device 300 starts multiple fans to dissipate heat at the same time in hot weather, and the multiple fans are respectively arranged at the end and the middle to dissipate heat in all directions inside the set-top box, ensuring the uniformity of heat dissipation. At the same time, the heat dissipation device 300 can realize the synchronous operation of multiple fans by using one driving source, and the transmission of the end fan is disconnected when the weather turns cool in winter and the temperature is moderate in spring and autumn to reduce the power consumption of the heat dissipation device 300;

[0066] Among them, the setting of the limit component 500 can be adjusted according to the needs of the synchronization device 400, so that the synchronization device 400 is partially bent, so that the synchronization device 400 can be normally opened by the anti-rotation device 600 and transmit normally when the opening is released.

[0067] In some embodiments of the present invention, the cover plate assembly 200 includes:

[0068] A cover body 210, which is detachably fixed to the opening of the box body 100;

[0069] A mounting through hole 220, which is provided in the middle of the cover body 210 and passes through the cover body 210 vertically;

[0070] The filter plate 230 is detachably fixed inside the mounting through hole 220 and connected to the heat dissipation device 300 .

[0071] The cover body 210 can be used to open the box body 100 normally and to repair and adjust the internal structure of the box body 100.

[0072] The installation through hole 220 provides a space for the installation of the filter plate 230 , so that the filter plate 230 filters the incoming airflow to prevent dust from entering the interior of the box body 100 along with the airflow.

[0073] In some embodiments of the present invention, the heat dissipation device 300 includes:

[0074] The heat dissipation fans 310 are provided in three numbers and installed inside the box body 100;

[0075] The transmission shaft 320 is fixed inside the cooling fan 310 and is rotatably connected to the supporting device 700. The tops of the transmission shaft 320 at both ends are rotatably connected to the filter plate 230.

[0076] The driving motor 330 has an output end connected to the top of the middle transmission shaft 320 and fixed to the bottom of the filter plate 230 .

[0077] The heat dissipation fan 310 is set to rotate to drive the airflow inside the box body 100, thereby achieving the effect of heat dissipation inside the box body 100;

[0078] Among them, the cooling fan 310 is driven to rotate by the coordinated setting of the transmission shaft 320 and the driving motor 330, so that the cooling fan 310 drives the air flow during the rotation process. At the same time, different numbers of cooling fans 310 are driven according to different seasons. At the same time, the load of the driving motor 330 is adjusted according to the number of cooling fans 310 started, so as to reduce the power consumption of the driving motor 330 and improve the heat dissipation effect and uniformity.

[0079] In some embodiments of the present invention, the synchronization device 400 includes:

[0080] A driving wheel 410, which is fixed on the outer side of the middle transmission shaft 320;

[0081] Driven wheels 420, two driven wheels 420 are provided and are respectively fixed to the outside of the transmission shaft 320 at both ends;

[0082] The belt 430 , the driving wheel 410 and the two driven wheels 420 are connected to each other through the belt 430 .

[0083] The driving wheel 410 and the driven wheel 420 are arranged in coordination so that the driving motor 330 can simultaneously drive the three cooling fans 310 to rotate synchronously. The simultaneous rotation of the three cooling fans 310 increases the flow speed of the airflow, thereby achieving the effect of improving the cooling effect and ensuring the uniformity of the cooling.

[0084] Among them, the load size will directly affect the size of its power consumption. When the motor is running at a low load, the power consumption is relatively low; when the motor is running at a high load, its power consumption will increase accordingly. The power consumption of the motor is related to the voltage, current, and power factor (the higher the load rate, the higher the power factor). For example, the power consumption of a three-phase motor: P = 1.732 × U × I × cosφ For example: 3-phase 380V power supply, current 20A: P = 1.732 × U × I × cosφ = 1.732 × 0.38 × 20 × 0.78 ≈ 10 (KW) = 10KW / h (the power factor COSφ is generally between 0.7 and 0.85, and the average value is 0.78) The power factor can be about 0.2 when unloaded. Generally, the higher the load rate, the higher the power factor.

[0085] In some embodiments of the present invention, the limiting assembly 500 includes:

[0086] A guide frame 510, the guide frame 510 is fixed inside the box body 100 and is located between the two cooling fans 310;

[0087] Sliding devices 520, two of which are provided and slidably installed inside the guide frame 510 and in contact with the belt 430;

[0088] The compression spring 530 has two ends fixedly connected to the sliding device 520 and the inner wall of the box body 100 respectively.

[0089] The guide frame 510 is provided to guide the sliding of the sliding device 520, thereby preventing the sliding device 520 from deviating during the sliding process.

[0090] The compression spring 530 is provided to apply an external force to the sliding device 520 , so that the sliding device 520 can always press the belt 430 under the action of the compression spring 530 .

[0091] In some embodiments of the present invention, the sliding device 520 includes:

[0092] A movable pulley 521, the movable pulley 521 is in contact with the belt 430;

[0093] Two sliding plates 522 are provided and are rotatably mounted on the top and bottom of the movable pulley 521 , respectively, and drive the movable pulley 521 to slide along the guide frame 510 .

[0094] The belt 430 is squeezed by the movable pulley 521, and the bending degree of the belt 430 is reduced during the sliding of the movable pulley 521, so that the belt 430 can be pulled and adjusted under the action of external force to release the driving wheel 410 from transmitting the power to one of the two driven wheels 420 (such as Figure 4 and Figure 5 ), reducing the load force of the driving motor 330 at the rated speed, while still being able to maintain sufficient friction with the driving wheel 410 and the two driven wheels 420 after the belt 430 is worn;

[0095] The sliding plate 522 cooperates with the guide frame 510 to guide the movement of the movable pulley 521 .

[0096] In some embodiments of the present invention, the anti-rotation device 600 includes:

[0097] A telescopic rod 610, wherein the telescopic rod 610 is fixed to the inner wall of the box body 100;

[0098] A receiving block 620, which is fixed to the head of the telescopic rod 610 and slides under the drive of the telescopic rod 610;

[0099] The rotating column 630 is rotatably mounted on the receiving block 620 and contacts the belt 430 .

[0100] The telescopic rod 610 and the receiving block 620 are arranged to drive the rotating column 630 to move, so that the telescopic rod 610 drives the rotating column 630 away from the driven wheel 420 in the extended state, so that the driven wheel 420 can normally contact with the belt 430 (such as Figure 3 ), driven by the belt 430 to rotate under the action of friction, and when the telescopic rod 610 contracts, the rotating column 630 is driven to move between the belt 430 and the driven wheel 420, so that the driven wheel 420 and the belt 430 are out of contact, and the transmission of the belt 430 to the rotating column 630 is released (such as Figure 4 and Figure 5 );

[0101] The rotation of the rotating column 630 can support the belt 430 without affecting the transmission of the belt 430. At the same time, the sum of the diameters of the two rotating columns 630 and one driven wheel 420 can be set to be smaller than the diameter of the driving wheel 410 (not shown in the figure), or the diameters of the driven wheel 420 and the driving wheel 410 can be made the same.

[0102] In some embodiments of the present invention, the supporting device 700 includes:

[0103] A support plate 710, the support plate 710 is rotatably mounted on the bottom of the transmission shaft 320;

[0104] The receiving plate 720 has two ends connected to the supporting plate 710 and the inner wall of the box body 100 respectively.

[0105] The transmission shaft 320 is supported by the cooperation of the support plate 710 and the receiving plate 720 , and the rotation of the transmission shaft 320 is not affected.

[0106] Working method of the utility model:

[0107] When the heat dissipation of the end portion needs to be released or only one end needs to be cooled in cold weather or the temperature is suitable, the corresponding telescopic rod 610 is started, so that the telescopic rod 610 drives the rotating column 630 to move between the driven wheel 420 and the belt 430, so that the rotating column 630 pulls the belt 430 and drives the belt 430 to disengage from the corresponding driven wheel 420, thereby releasing the transmission to the driven wheel 420. At the same time, when the belt 430 is pulled, the movable pulley 521 is squeezed, so that the movable pulley 521 drives the sliding plate 522 to slide, and the sliding plate 522 squeezes the compression spring 530 when sliding, so that the compression spring 530 is compressed and stores force;

[0108] When cooling, the drive motor 330 is started, so that the drive motor 330 drives the transmission shaft 320 to rotate, so that the transmission shaft 320 drives the cooling fan 310 and the driving wheel 410 to rotate simultaneously, so that the driving wheel 410 drives one or no driven wheel 420 to rotate (such as Figure 4 or Figure 5 ), so that the heat dissipation fan 310 drives the air flow when rotating, so that the air flow is filtered by the filter plate 230 and enters the interior of the box body 100, and drives the heat inside the box body 100 to be discharged;

[0109] When full heat dissipation is required in hot weather, the telescopic rod 610 is started, so that the telescopic rod 610 drives the rotating column 630 away from the driven wheel 420, so that the belt 430 is loosened, and the sliding plate 522 moves under the drive of the compression spring 530 and drives the movable pulley 521 to squeeze the belt 430, so that the belt 430 contacts the driving wheel 410 and the driven wheel 420 for friction transmission;

[0110] When cooling, the drive motor 330 is started, so that the drive motor 330 drives the transmission shaft 320 to rotate, so that the transmission shaft 320 drives the cooling fan 310 and the driving wheel 410 to rotate at the same time, so that the driving wheel 410 drives the two driven wheels 420 to rotate through the belt 430 (such as Figure 3), so that the driven wheel 420 drives the corresponding cooling fan 310 to rotate through the transmission shaft 320, so that the cooling fan 310 drives the air flow when rotating, so that the air flow is filtered by the filter plate 230 and enters the interior of the box body 100, and drives the heat inside the box body 100 to be discharged.

[0111] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0112] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A set-top box heat dissipation structure, characterized in that: include: Box body (100); A cover plate assembly (200), wherein the cover plate assembly (200) is detachably fixed to the top of the box body (100); A heat dissipation device (300), the heat dissipation device (300) being installed inside the box body (100) and connected to the cover plate assembly (200); A synchronization device (400), wherein the synchronization device (400) is installed outside the heat dissipation device (300); A limiting assembly (500), wherein two limiting assemblies (500) are provided and are respectively installed at two ends of the interior of the box body (100) and are used to squeeze the synchronization device (400); A rotation-stopping device (600), wherein two groups of the rotation-stopping device (600) are provided and are respectively fixed to the inner walls at both ends of the box body (100), and the rotation-stopping device (600) is adapted to be a structure for limiting the transmission of the synchronization device (400); A supporting device (700), wherein three supporting devices (700) are provided, and the three supporting devices (700) are all detachably fixed inside the box body (100) and are used to support the heat dissipation device (300).

2. A set-top box heat dissipation structure according to claim 1, characterized in that: The cover plate assembly (200) comprises: A cover plate body (210), wherein the cover plate body (210) is detachably fixed at the opening of the box body (100); A mounting through hole (220), the mounting through hole (220) being provided in the middle of the cover plate body (210) and penetrating vertically; A filter plate (230) is detachably fixed inside the mounting through hole (220) and connected to the heat dissipation device (300).

3. The heat dissipation structure of a set-top box according to claim 1, characterized in that: The heat dissipation device (300) comprises: A heat dissipation fan (310), wherein three heat dissipation fans (310) are provided; A transmission shaft (320), wherein the transmission shaft (320) is fixed inside the cooling fan (310) and is rotatably connected to the support device (700), and the tops of the transmission shaft (320) at both ends are rotatably connected to the filter plate (230); A driving motor (330), wherein an output end of the driving motor (330) is connected to the top of the middle transmission shaft (320) and is fixed to the bottom of the filter plate (230).

4. The heat dissipation structure of a set-top box according to claim 1, characterized in that: The synchronization device (400) comprises: A driving wheel (410), wherein the driving wheel (410) is fixed on the outer side of the middle transmission shaft (320); A driven wheel (420), wherein two driven wheels (420) are provided and are respectively fixed on the outside of the transmission shaft (320) at both ends; A belt (430), wherein the driving wheel (410) and the two driven wheels (420) are connected to each other through the belt (430).

5. The heat dissipation structure of a set-top box according to claim 1, characterized in that: The limiting assembly (500) comprises: A guide frame (510), wherein the guide frame (510) is fixed inside the box body (100) and is located between the two cooling fans (310); A sliding device (520), wherein two sliding devices (520) are provided and are slidably installed inside the guide frame (510) and are in contact with the belt (430); A compression spring (530), wherein two ends of the compression spring (530) are respectively fixedly connected to the sliding device (520) and the inner wall of the box body (100).

6. The heat dissipation structure of a set-top box according to claim 5, characterized in that: The sliding device (520) comprises: A movable pulley (521), wherein the movable pulley (521) is in contact with the belt (430); Two sliding plates (522) are provided and are rotatably mounted on the top and bottom of the movable pulley (521) respectively, and drive the movable pulley (521) to slide along the guide frame (510).

7. The heat dissipation structure of a set-top box according to claim 1, characterized in that: The anti-rotation device (600) comprises: A telescopic rod (610), wherein the telescopic rod (610) is fixed on the inner wall of the box body (100); A receiving block (620), wherein the receiving block (620) is fixed to the head of the telescopic rod (610) and slides under the drive of the telescopic rod (610); A rotating column (630) is rotatably mounted on the receiving block (620) and is in contact with the belt (430).

8. The heat dissipation structure of a set-top box according to claim 1, characterized in that: The supporting device (700) comprises: A support plate (710), wherein the support plate (710) is rotatably mounted on the bottom of the transmission shaft (320); A receiving plate (720), wherein two ends of the receiving plate (720) are respectively connected to the supporting plate (710) and the inner wall of the box body (100).

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