CN115768068A

CN115768068A - Heat radiation structure of set top box

Info

Publication number: CN115768068A
Application number: CN202211496618.2A
Authority: CN
Inventors: 吴长宝; 苟东; 夏金金; 冯顺年
Original assignee: Shenzhen Junuo Electronics Co ltd
Current assignee: Shenzhen Junuo Electronics Co ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-03-07

Abstract

The invention relates to a heat dissipation structure of a set top box, and belongs to the technical field of set top boxes. The air conditioner comprises a shell, wherein the bottom of the shell is provided with a through hole for air inlet, the bottom of one side, away from each other, of the shell is provided with a plurality of air inlet holes communicated with the through hole, and the top of the shell is provided with a plurality of air outlet holes for air outlet; the sealing cover is fixedly arranged at the bottom of the shell and used for covering the through hole, and an air inlet and guide hole for air inlet is formed in the sealing cover; the lower cover body is fixedly connected to the inner wall of the bottom of the shell and covers the through hole. According to the invention, wind is led in from the bottom and led out from the top of the shell, so that the heat dissipation effect can be improved, dust accumulation on the top of the shell can be reduced, meanwhile, the dust and lint filtering effect can be achieved in a porous entering mode, the cleaning mode is simple and convenient, internal components are not easy to damage, the heat dissipation efficiency is adjustable, different use requirements of high-temperature or low-temperature environments can be met, and the flexibility is strong.

Description

Heat radiation structure of set top box

Technical Field

The invention belongs to the technical field of set top boxes, and relates to a heat dissipation structure of a set top box.

Background

With the rapid development of economy and technological progress in various regions, digital video converter boxes are becoming more widely used, and are generally called set-top boxes or set-top boxes, which are devices for connecting a television set to an external signal source, and convert compressed digital signals into television contents and display the television contents on the television set, wherein the signals can come from cable, satellite antenna, broadband network and terrestrial broadcasting, and enable users to watch digital television programs on the existing television set, and perform interactive digital entertainment, education and commercialization activities through the network.

The set-top box can generate certain heat when working with the internal electric devices, if the heat can not be effectively dissipated, the temperature of the set-top box is higher and higher, the normal use of the equipment is seriously influenced, and the service life of the set-top box is greatly reduced. And at present the radiating mode to the STB mainly has through setting up the louvre, make the air flow heat dissipation, in addition through installing small-size fan, utilize the fan to dispel the heat, also have the mode through setting up the fin to transmit the heat dissipation, but only set up the louvre or set up the mode radiating efficiency of fin low, can not satisfy normal use, set up small-size fan and increased manufacturing cost, but its radiating mode is also the most effectual at present better, nevertheless still there is certain defect when using at present:

1. once the traditional fan is set, the traditional fan can only work for a long time in the same heat dissipation mode and cannot flexibly change different requirements of high-temperature weather and low-temperature weather;

2. traditional fan flabellum set up be not convenient for carry out the clearance of dust, batting to it, need demolish whole shell and just can clear up, and not only the dismouting is troublesome, still causes the damage to the electrical part of the inside easily like this.

Disclosure of Invention

In view of this, the invention provides a heat dissipation structure of a set top box, which aims to solve the problems that in the prior art, a fan cannot adjust a heat dissipation mode after being set, has poor flexibility and is inconvenient to clean ash and lint.

In order to achieve the purpose, the invention provides the following technical scheme: the method comprises the following steps:

the air conditioner comprises a shell, wherein the bottom of the shell is provided with a through hole for air inlet, the bottom of one side, away from each other, of the shell is provided with a plurality of air inlet holes communicated with the through hole, and the top of the shell is provided with a plurality of air outlet holes for air outlet;

the sealing cover is fixedly arranged at the bottom of the shell and used for covering the through hole, and an air inlet and guide hole for air inlet is formed in the sealing cover;

the lower cover body is fixedly connected to the inner wall of the bottom of the shell and covers the through hole, and a plurality of air supply holes for guiding air are formed in the side wall of the lower cover body;

the upper cover body is fixedly connected to the inner wall of the top of the shell and covers the air outlet holes, and a plurality of air outlet and air guide holes for guiding air are formed in the side wall of the upper cover body;

the air blowing mechanism is arranged between the lower cover body and the upper cover body, and can blow air simultaneously inside the lower cover body and inside the upper cover body, so that the air flows from bottom to top to dissipate heat inside the shell;

the driving mechanism is arranged between the lower cover body and the upper cover body and is used for driving the air supply mechanism to work;

and the adjusting mechanism is arranged between the inner wall of the top of the shell and the sealing cover and used for adjusting the size of the wind power blown out by the blowing mechanism.

Further, blow the mechanism including rotating the rotating tube that runs through upper shield body bottom and lower shield body top respectively, the bottom of rotating tube extends to the inside of the lower shield body and installs a plurality of first flabellums, and the top of rotating tube extends to the inside of the upper shield body and installs a plurality of second flabellums.

Further, adjustment mechanism is including rotating the lifting screw who connects at casing top inner wall, lifting screw's outer wall thread bush is equipped with the spliced pole, spliced pole sliding connection is at the inner wall of rotating tube, two sliding holes have been seted up to the outer wall bilateral symmetry of rotating tube, the equal sliding connection in inside of two sliding holes has the connecting block, one side that two connecting blocks are close to each other all with the outer wall sliding connection of spliced pole, the same go-between of one side fixedly connected with that two connecting blocks kept away from each other, and the go-between cover is established at the outer wall of rotating tube, the fixed outer wall at the go-between of establishing of drive gear cover.

Furthermore, the driving mechanism comprises a micro motor fixedly connected with the outer wall of the top of the lower cover body, an output shaft of the micro motor is fixedly sleeved with a full gear and an incomplete gear respectively, a transmission gear is sleeved on the outer wall of the rotating tube, and the transmission gear is intermittently meshed with the full gear and the incomplete gear.

Furthermore, the top symmetry of spliced pole is equipped with two guide slots, and equal sliding connection has the guide arm in two guide slots, and the top of two guide arms all extends to the top of rotating-tube and with the top inner wall fixed connection of casing.

Further, annular notch has been seted up to the outer wall of spliced pole, and the inside rotation of annular notch is connected with the swivel becket, and two connecting blocks fixed connection respectively are in the outer wall both sides of swivel becket, and the top and the bottom of swivel becket all are the annular and are equipped with a plurality of balls, a plurality of balls respectively with the top inner wall and the bottom inner wall rolling contact of annular notch.

Further, the closing cap includes arc bellying, two rake, two horizontal parts, and the both sides of arc bellying are located to two rake symmetries, and a plurality of air inlet wind-guiding holes equipartition respectively are on two rake, and the aperture in air inlet wind-guiding hole is the level setting, and two horizontal parts are located two rake respectively and are kept away from one side of arc bellying, and two horizontal parts are through a plurality of screws and casing fixed connection.

Further, two the top of horizontal part all is equipped with the installation notch, and a plurality of jacks have been seted up to the bottom inner wall equidistance of installation notch, one side inner wall that the through-hole was kept away from each other all be equipped with the installation sand grip of installation notch looks adaptation, a plurality of screws corresponding with the jack have been seted up at the top of installation sand grip, and the screw is fixed the closing cap through the cooperation of jack and screw.

Further, adjustment mechanism still runs through the dwang at the closing cap top including rotating, and the dwang is located the arc bellying, and the top of dwang extends to and is equipped with the spline groove in the pivoted pipe, lifting screw's bottom fixedly connected with and spline groove splined connection's integral key shaft, and the bottom of dwang extends to the below and the fixedly connected with knob of closing cap.

Furthermore, both sides of the top wall of the lower cover body are provided with air guide inclined planes.

The invention has the beneficial effects that:

1. according to the heat dissipation structure of the set top box, the micro motor is started to drive the rotating pipe to rotate, the first fan blade and the second fan blade can be driven to rotate simultaneously, external air enters the shell through the air inlet hole, the air inlet air guide hole and the air supply hole to dissipate heat of an electric device, hot air is discharged out of the shell through the air outlet air guide hole and the air outlet hole, the air flows from bottom to top, the characteristic that the hot air flows upwards can be attached, the heat dissipation effect is improved, the air is discharged upwards, and dust accumulation on the top of the shell can be reduced;

2. according to the heat dissipation structure of the set top box, disclosed by the invention, when external air enters the shell through the air inlet hole, the air inlet guide hole and the air supply hole in sequence, dust and lint in the air can be gradually filtered, so that the dust entering the air in the shell is reduced, and a self-filtering effect is achieved;

3. according to the set top box heat dissipation structure disclosed by the invention, the rotating knob is rotated to drive the rotating rod to rotate, the lifting screw rod can be driven to rotate to adjust the position of the transmission gear, and the transmission gear is meshed with the full gear or the incomplete gear, so that the first fan blade and the second fan blade are switched between high-speed rotation and low-speed rotation to adapt to different climatic environments, and the use flexibility is greatly improved;

4. according to the heat dissipation structure of the set top box, the sealing cover is disassembled, so that dust and wool fibers in the lower cover body can be conveniently cleaned, the sealing cover can be cleaned, the air supply holes and the air inlet holes can be scrubbed, the whole machine shell does not need to be disassembled, any electric device cannot be leaked, and the damage to the electric device is avoided;

5. according to the heat dissipation structure of the set top box, the arc-shaped protruding portion on the sealing cover is arranged, so that external wind can enter from a gap below the sealing cover and then enter the lower cover body through the air inlet and guide hole, the wind sent out by the first fan blade can be shunted and noise reduced, and the practicability in use is improved.

According to the invention, wind is led in from the bottom and led out from the top of the shell, so that the heat dissipation effect can be improved, dust accumulation on the top of the shell can be reduced, meanwhile, the dust and lint filtering effect can be achieved in a porous entering mode, the cleaning mode is simple and convenient, internal components are not easy to damage, the heat dissipation efficiency is adjustable, different use requirements of high-temperature or low-temperature environments can be met, and the flexibility is strong.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

fig. 1 is a perspective view of the overall structure of a heat dissipation structure of a set top box according to the present invention;

fig. 2 is a front sectional view of the overall structure of a heat dissipation structure of a set top box according to the present invention;

fig. 3 is a partial structural sectional view of a heat dissipation structure of a set top box 2 according to the present invention;

fig. 4 is a partial structural sectional view of a heat dissipation structure of a set top box 3 according to the present invention;

FIG. 5 is an enlarged view of the structure of part A of the heat dissipation structure of the set top box of the present invention;

FIG. 6 is a perspective view of the overall structure of a heat dissipation structure of a set-top box of the present invention 4;

fig. 7 is an exploded view of the overall structure of a heat dissipation structure of a set top box of the present invention, fig. 5;

fig. 8 is a top cross-sectional view of the overall structure of a heat dissipating structure of a set top box according to the present invention;

fig. 9 is a partial structural sectional view of a heat dissipation structure of a set top box of the present invention fig. 8;

FIG. 10 is a perspective view of a connection structure of a lower cover and an upper cover of a heat dissipation structure of a set top box according to the present invention;

fig. 11 is a perspective view of an integral turning structure of the heat dissipation structure of the set top box 10 according to the present invention;

fig. 12 is a perspective view of the whole structure of a heat dissipation structure of a set top box 9 according to the present invention;

fig. 13 is a perspective view of a cover structure of a heat dissipation structure of a set top box according to the present invention;

fig. 14 is a bottom perspective view of the overall structure of a heat dissipating structure of a set top box in accordance with the present invention;

fig. 15 is an exploded view of a heat dissipation structure of a set-top box of the present invention, fig. 14, with the cover removed.

Reference numerals: 10. a housing; 101. a through hole; 102. installing convex strips; 1021. a screw hole; 103. an air outlet; 104. an air inlet hole; 11. sealing the cover; 111. an arc-shaped convex part; 112. an inclined portion; 1121. air inlet and guide holes; 113. a horizontal portion; 1131. installing a notch; 1132. a jack; 12. a lower cover body; 121. an air guide inclined plane; 122. an air supply hole; 13. an upper cover body; 131. an air outlet and guide hole; 14. rotating the tube; 141. a slide hole; 15. a first fan blade; 16. connecting columns; 161. a guide groove; 162. an annular notch; 17. a rotating ring; 18. connecting blocks; 19. a connecting ring; 20. a transmission gear; 21. a ball bearing; 22. a micro-motor; 23. all-gear; 24. an incomplete gear; 25. a lifting screw; 251. a spline shaft; 26. a guide bar; 27. a second fan blade; 28. rotating the rod; 281. a spline groove; 29. a knob; 30. and (4) a screw.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; for a better explanation of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.

Example one

As shown in fig. 1 to 15, a heat dissipation structure of a set top box includes a casing 10, a through hole 101 for air intake is formed at the bottom of the casing 10, a plurality of air intake holes 104 communicated with the through hole 101 are formed at the bottom of one side of the casing 10 away from each other, and a plurality of air outlet holes 103 for air outlet are formed at the top of the casing 10; and the sealing cover 11 is fixedly arranged at the bottom of the shell 10 and used for covering the through hole 101, and an air inlet guide hole 1121 for air inlet is formed in the sealing cover 11.

In the present invention, the sealing cover 11 includes an arc-shaped protrusion 111, two inclined portions 112, and two horizontal portions 113, the two inclined portions 112 are symmetrically disposed on two sides of the arc-shaped protrusion 111, the air inlet holes 1121 are respectively and uniformly distributed on the two inclined portions 112, the apertures of the air inlet holes 1121 are horizontally disposed, the two horizontal portions 113 are respectively disposed on one sides of the two inclined portions 112 away from the arc-shaped protrusion 111, and the two horizontal portions 113 are fixedly connected to the housing 10 through a plurality of screws 30.

When the first fan blade 15 blows air downward along with the rotation of the rotating pipe 14, the impact force of part of the air can be removed through the arc-shaped protrusion 111 and spread to both sides, so that the noise during heat dissipation can be reduced, and the external air can flow into the lower cover body 12 through the horizontally arranged air inlet guide holes 1121 through the guide of the two inclined portions 112 to the air, and then can be discharged from the air outlet 122.

As shown in fig. 1 to 15, a heat dissipation structure of a set top box further includes a lower cover 12 and an upper cover 13, the lower cover 12 is fixedly connected to the inner wall of the bottom of the housing 10 and covers the through hole 101, and a plurality of air supply holes 122 for guiding air are formed in the side wall of the lower cover 12; the upper cover body 13 is fixedly connected to the inner wall of the top of the casing 10 and covers the air outlet holes 103, and a plurality of air outlet guide holes 131 for guiding air are formed in the side wall of the upper cover body 13.

As shown in fig. 1-15, a heat dissipation structure for a set top box further includes a blowing mechanism disposed between the lower cover 12 and the upper cover 13, and configured to blow air simultaneously inside the lower cover 12 and inside the upper cover 13, so that the air flows from bottom to top to dissipate heat inside the housing 10; the blowing mechanism comprises a rotating pipe 14 which respectively rotatably penetrates through the bottom of the upper cover body 13 and the top of the lower cover body 12, the bottom end of the rotating pipe 14 extends into the lower cover body 12 and is provided with a plurality of first fan blades 15, and the top end of the rotating pipe 14 extends into the upper cover body 13 and is provided with a plurality of second fan blades 27.

When the rotating pipe 14 rotates, the first fan blade 15 and the second fan blade 27 can be driven to rotate to supply air, at this time, external air can be sent into the casing 10 through the air inlet holes 104, the air inlet guiding holes 1121, and the air supply holes 122, and then hot air in the casing 10 can be discharged out of the casing 10 through the air outlet guiding holes 131 and the air outlet holes 103 by rotation of the second fan blade 27, so that a heat dissipation effect is achieved.

As shown in fig. 1 to 15, a heat dissipation structure of a set top box further includes an adjusting mechanism, disposed between an inner wall of a top of a housing 10 and a sealing cover 11, for adjusting the amount of wind power blown out by a blowing mechanism; adjustment mechanism is including rotating the lifting screw 25 of connecting at casing 10 top inner wall, lifting screw 25's outer wall threaded sleeve is equipped with spliced pole 16, spliced pole 16 sliding connection is at the inner wall of rotating tube 14, two sliding hole 141 have been seted up to rotating tube 14's outer wall bilateral symmetry, the equal sliding connection in inside of two sliding hole 141 has connecting block 18, two connecting block 18 one side that is close to each other all with spliced pole 16's outer wall sliding connection, the same go-between 19 of one side fixedly connected with that two connecting blocks 18 kept away from each other, and the go-between 19 cover is established at the outer wall of rotating tube 14, drive gear 20 fixed cover is established at the outer wall of go-between 19. The connecting column 16 can be driven to move up and down by rotating the lifting screw 25, the transmission gear 20 can be driven to move up and down by the connecting block 18 and the connecting ring 19, and the height position of the transmission gear 20 can be adjusted.

As shown in fig. 1 to 15, a heat dissipation structure of a set top box further includes a driving mechanism, installed between the lower cover body 12 and the upper cover body 13, for driving the air supply mechanism to work; the driving mechanism comprises a micro motor 22 fixedly connected with the outer wall of the top of the lower cover body 12, an output shaft of the micro motor 22 is respectively and fixedly sleeved with a full gear 23 and an incomplete gear 24, the outer wall of the rotating tube 14 is sleeved with a transmission gear 20, and the transmission gear 20 is intermittently meshed and matched with the full gear 23 and the incomplete gear 24.

The micro motor 22 is started, the rotating pipe 14 can be driven to rotate at a high speed through the meshing of the full gear 23 and the transmission gear 20, and then the first fan blade 15 and the second fan blade 27 are driven to rotate at a high speed, and at the moment, the air supply force is large, the heat dissipation efficiency is high, and the fan is suitable for high-temperature weather; when the transmission gear 20 is adjusted to be meshed with the incomplete gear 24, the micro motor 22 is started, the rotating pipe 14 can be driven to rotate at a low speed, the first fan blade 15 and the second fan blade 27 are further driven to rotate at a low speed, the air supply force is changed at the moment, the heat dissipation efficiency is low, and therefore the effect of slowing down heat dissipation is achieved, and the device is suitable for low-temperature weather.

Example two

This embodiment is a further improvement of the previous embodiment: as shown in fig. 1 to 15, a heat dissipation structure of a set top box includes a casing 10, a through hole 101 for air intake is formed at the bottom of the casing 10, a plurality of air intake holes 104 communicated with the through hole 101 are formed at the bottom of one side of the casing 10 away from each other, and a plurality of air outlet holes 103 for air outlet are formed at the top of the casing 10; and the sealing cover 11 is fixedly installed at the bottom of the shell 10 and used for covering the through hole 101, and an air inlet guide hole 1121 for air inlet is formed in the sealing cover 11.

When the first fan blade 15 blows air downward along with the rotation of the rotating pipe 14, the impact force of part of the air can be removed through the arc-shaped protruding portion 111 and spread to both sides, so that the noise during heat dissipation can be reduced, and the external air can flow into the lower cover body 12 through the horizontally arranged air inlet and guide holes 1121 through the two inclined portions 112 and then be blown out from the air supply holes 122.

In the present invention, the top portions of the two horizontal portions 113 are each provided with an installation notch 1131, a plurality of insertion holes 1132 are equidistantly formed on the inner wall of the bottom portion of the installation notch 1131, the inner wall of one side of the through hole 101, which is away from each other, is each provided with an installation convex strip 102 adapted to the installation notch 1131, a plurality of screw holes 1021 corresponding to the insertion holes 1132 are formed on the top portion of the installation convex strip 102, and the screw 30 fixes the sealing cover 11 through the cooperation of the insertion holes 1132 and the screw holes 1021. The mounting and fixing of the sealing cover 11 are facilitated through the screws 30, and meanwhile, through the detachment of the sealing cover 11, the dust inside the lower cover body 12 can be cleaned conveniently, the noise of the first fan blades 15 can be reduced, and the ventilation effect of the air supply hole 122 can be improved.

As shown in fig. 1 to 15, a heat dissipation structure of a set top box further includes a lower cover 12 and an upper cover 13, the lower cover 12 is fixedly connected to the inner wall of the bottom of the housing 10 and covers the through hole 101, and a plurality of air supply holes 122 for guiding air are formed in the side wall of the lower cover 12; the upper cover body 13 is fixedly connected to the inner wall of the top of the casing 10 and covers the air outlet holes 103, and a plurality of air outlet air guide holes 131 for guiding air are formed in the side wall of the upper cover body 13.

As shown in fig. 1-15, a heat dissipation structure for a set top box further includes a blowing mechanism disposed between the lower cover 12 and the upper cover 13, and configured to blow air simultaneously inside the lower cover 12 and inside the upper cover 13, so that the air flows from bottom to top to dissipate heat inside the housing 10; the blowing mechanism comprises a rotating pipe 14 which respectively and rotatably penetrates through the bottom of the upper cover body 13 and the top of the lower cover body 12, the bottom end of the rotating pipe 14 extends into the lower cover body 12 and is provided with a plurality of first fan blades 15, and the top end of the rotating pipe 14 extends into the upper cover body 13 and is provided with a plurality of second fan blades 27.

When the rotating pipe 14 rotates, the first fan blade 15 and the second fan blade 27 can be driven to rotate to supply air, at this time, external air can be sent into the casing 10 through the air inlet hole 104, the air inlet guide hole 1121 and the air supply hole 122, and then hot air in the casing 10 can be discharged out of the casing 10 through the rotation of the second fan blade 27 from the air outlet guide hole 131 and the air outlet hole 103, so that a heat dissipation effect is achieved.

As shown in fig. 1 to 15, a heat dissipation structure of a set top box further includes an adjusting mechanism, disposed between an inner wall of a top of the housing 10 and the sealing cover 11, for adjusting the amount of wind power blown out by the blowing mechanism; adjustment mechanism is including rotating the lifting screw 25 of connecting at casing 10 top inner wall, lifting screw 25's outer wall threaded sleeve is equipped with spliced pole 16, spliced pole 16 sliding connection is at the inner wall of rotating tube 14, two sliding hole 141 have been seted up to rotating tube 14's outer wall bilateral symmetry, the equal sliding connection in inside of two sliding hole 141 has connecting block 18, two connecting block 18 one side that is close to each other all with spliced pole 16's outer wall sliding connection, the same go-between 19 of one side fixedly connected with that two connecting blocks 18 kept away from each other, and the go-between 19 cover is established at the outer wall of rotating tube 14, drive gear 20 fixed cover is established at the outer wall of go-between 19. The connecting column 16 can be driven to move up and down by rotating the lifting screw 25, the transmission gear 20 can be driven to move up and down by the connecting block 18 and the connecting ring 19, and the height position of the transmission gear 20 can be adjusted.

In the present invention, two guide slots 161 are symmetrically disposed at the top of the connecting column 16, the guide rods 26 are slidably connected in the two guide slots 161, and the top ends of the two guide rods 26 extend to the upper side of the rotating tube 14 and are fixedly connected to the top inner wall of the housing 10. The two guide rods 26 limit the rotation of the connecting column 16, so that a stable effect can be achieved during up-and-down adjustment, and the rotating tube 14 is prevented from being driven to rotate.

In the invention, the outer wall of the connecting column 16 is provided with an annular notch 162, the inside of the annular notch 162 is rotatably connected with the rotating ring 17, the two connecting blocks 18 are respectively and fixedly connected to two sides of the outer wall of the rotating ring 17, the top and the bottom of the rotating ring 17 are both provided with a plurality of balls 21 in an annular shape, and the plurality of balls 21 are respectively in rolling contact with the inner wall of the top and the inner wall of the bottom of the annular notch 162.

When the transmission gear 20 drives the connection ring 19 to rotate, the two connection blocks 18 can drive the rotation tube 14 to rotate, and simultaneously the two connection blocks 18 drive the rotation ring 17 to rotate in the annular notch 162, and the rotation friction force is reduced through the balls 21, so that the rotation tube 14 can rotate more smoothly.

In the present invention, the adjusting mechanism further includes a rotating rod 28 rotatably penetrating through the top of the sealing cover 11, the rotating rod 28 is located on the arc-shaped protrusion 111, the top end of the rotating rod 28 extends into the rotating tube 14 and is provided with a spline slot 281, the bottom end of the lifting screw 25 is fixedly connected with a spline shaft 251 splined with the spline slot 281, and the bottom end of the rotating rod 28 extends to the lower side of the sealing cover 11 and is fixedly connected with a knob 29.

Drive dwang 28 through knob 29 and rotate, can drive integral key shaft 251 and rotate, and then drive lifting screw 25 and rotate, realize the regulation to drive gear 20, reach the effect of the outside regulation of being convenient for, simultaneously, after dismantling closing cap 11, dwang 28 is together taken off thereupon, the clearance of the inside dust of being convenient for, when installing again, only need rotate knob 29, make integral key shaft 251 and spline 281 align, can install closing cap 11.

The micro motor 22 is started, the rotating pipe 14 can be driven to rotate at a high speed through the meshing of the full gear 23 and the transmission gear 20, and then the first fan blade 15 and the second fan blade 27 are driven to rotate at a high speed, and at the moment, the air supply force is large, the heat dissipation efficiency is high, and the fan is suitable for high-temperature weather; when the transmission gear 20 is adjusted to be meshed with the incomplete gear 24, the micro motor 22 is started, the rotating pipe 14 can be driven to rotate at a low speed, the first fan blade 15 and the second fan blade 27 are further driven to rotate at a low speed, the air supply force is changed at the moment, the heat dissipation efficiency is low, and therefore the effect of slowing down heat dissipation is achieved, and the solar photovoltaic power generation device is suitable for low-temperature weather.

In the present invention, the two sides of the top wall of the lower cover body 12 are both provided with air guiding slopes 121.

The wind guide inclined plane 121 can guide the wind blown out by the first fan blade 15 more strongly, so that the external wind can enter the housing 10 more effectively, and the heat dissipation effect is achieved.

The working principle is as follows: when the set-top box is in a working state, the micro motor 22 is automatically started, the connecting ring 19 is driven to rotate through the meshing motion of the full gear 23 and the transmission gear 20, the rotating pipe 14 is driven to rotate through the two connecting blocks 18, the rotating pipe 14 drives the first fan blades 15 to rotate at a high speed and supplies air downwards, the air is reduced in noise through the arc-shaped protruding parts 111 and then is diffused to two sides, meanwhile, the wind power is guided through the matching of the inclined parts 112 and the wind guide inclined planes 121, so that the external air enters the concave parts below the shell 10 from the air inlet holes 104 on the two sides of the shell 10, then enters the lower cover body 12 from the air inlet and guide holes 1121, and finally is sent out from the air supply holes 122 and enters the shell 10 to dissipate heat of electric devices inside the shell; meanwhile, the rotating pipe 14 drives the second fan blade 27 to rotate at a high speed and supply air upwards, and the hot air in the casing 10 enters the upper cover body 13 through the air outlet and guide hole 131 and is finally discharged upwards to the outside from the air outlet hole 103, so that the heat dissipation effect of the set top box is realized.

When the temperature is high in summer, the heat dissipation mode can be adopted, the high-speed rotation of the rotating pipe 14 is utilized to achieve the effect of efficient heat dissipation, but when the temperature is low in winter, efficient heat dissipation is not needed, and sometimes the heat dissipation of the rotating pipe cannot be too fast, the rotating knob 29 is rotated at the moment to drive the rotating rod 28 to rotate, and meanwhile, the spline shaft 251 is driven to rotate, so that the lifting screw 25 is driven to rotate to adjust the height of the connecting column 16, the height of the transmission gear 20 is adjusted, the transmission gear 20 is meshed with the incomplete gear 24, the rotating pipe 14 can be driven to rotate at a low speed by starting the micro motor 22 at the moment, the first fan blade 15 and the second fan blade 27 are driven to rotate at a low speed, the force of air supply is reduced, and the heat dissipation efficiency is slowed down.

When the interior of the lower cover 12 is excessively accumulated with dust, the screws 30 are removed, the sealing cover 11 is removed, and the rotating rod 28 is also removed at the same time, so that the dust attached to the interior of the lower cover 12, the first fan blades 15 and the air supply holes 122 can be cleaned, and the sealing cover 11 can also be cleaned, thereby improving the air inlet effect and reducing the noise of air supply.

Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.

Claims

1. A set top box heat radiation structure, comprising:

the air conditioner comprises a shell (10), wherein the bottom of the shell (10) is provided with a through hole (101) for air inlet, the bottom of one side, away from each other, of the shell (10) is provided with a plurality of air inlet holes (104) communicated with the through hole (101), and the top of the shell (10) is provided with a plurality of air outlet holes (103) for air outlet;

the sealing cover (11) is fixedly arranged at the bottom of the shell (10) and used for covering the through hole (101), and an air inlet guide hole (1121) for air inlet is formed in the sealing cover (11);

the lower cover body (12) is fixedly connected to the inner wall of the bottom of the shell (10) and covers the through hole (101), and a plurality of air supply holes (122) for guiding air are formed in the side wall of the lower cover body (12);

the upper cover body (13) is fixedly connected to the inner wall of the top of the shell (10) and covers the air outlet holes (103), and a plurality of air outlet and guide holes (131) for guiding air are formed in the side wall of the upper cover body (13);

the blowing mechanism is arranged between the lower cover body (12) and the upper cover body (13), and can blow air simultaneously inside the lower cover body (12) and inside the upper cover body (13) so that the air flows from bottom to top to radiate the inside of the shell (10);

the driving mechanism is arranged between the lower cover body (12) and the upper cover body (13) and is used for driving the air supply mechanism to work;

the adjusting mechanism is arranged between the inner wall of the top of the shell (10) and the sealing cover (11) and is used for adjusting the wind power blown out by the blowing mechanism.

2. The heat dissipating structure of a set-top box according to claim 1, wherein the blowing mechanism comprises a rotating pipe (14) rotatably penetrating the bottom of the upper housing (13) and the top of the lower housing (12), respectively, a bottom end of the rotating pipe (14) extends to the inside of the lower housing (12) and is provided with a plurality of first fan blades (15), and a top end of the rotating pipe (14) extends to the inside of the upper housing (13) and is provided with a plurality of second fan blades (27).

3. The heat dissipation structure of the set top box according to claim 2, wherein the adjusting mechanism comprises a lifting screw (25) rotatably connected to the inner wall of the top of the casing (10), a connecting column (16) is screwed on the outer wall of the lifting screw (25), the connecting column (16) is slidably connected to the inner wall of the rotating tube (14), two sliding holes (141) are symmetrically formed in two sides of the outer wall of the rotating tube (14), connecting blocks (18) are slidably connected to the insides of the two sliding holes (141), one sides of the two connecting blocks (18) close to each other are slidably connected to the outer wall of the connecting column (16), one side of the two connecting blocks (18) away from each other is fixedly connected with the same connecting ring (19), the connecting ring (19) is sleeved on the outer wall of the rotating tube (14), and the transmission gear (20) is fixedly sleeved on the outer wall of the connecting ring (19).

4. A heat dissipating structure for a set-top box according to claim 3, wherein the driving mechanism comprises a micro motor (22) fixedly connected to the outer wall of the top of the lower casing (12), an output shaft of the micro motor (22) is respectively fixedly sleeved with a full gear (23) and an incomplete gear (24), a transmission gear (20) is sleeved on the outer wall of the rotating tube (14), and the transmission gear (20) is intermittently engaged with the full gear (23) and the incomplete gear (24).

5. The heat dissipating structure of a set top box according to claim 3 or 4, wherein the top of the connecting post (16) is symmetrically provided with two guiding slots (161), the guiding rods (26) are slidably connected in the two guiding slots (161), and the top ends of the two guiding rods (26) extend to the upper side of the rotating tube (14) and are fixedly connected with the inner wall of the top of the casing (10).

6. The heat dissipating structure of a set top box according to claim 5, wherein the outer wall of the connecting post (16) is formed with an annular notch (162), the inside of the annular notch (162) is rotatably connected with a rotating ring (17), and two connecting blocks (18) are respectively and fixedly connected to two sides of the outer wall of the rotating ring (17), the top and the bottom of the rotating ring (17) are both provided with a plurality of balls (21) in an annular shape, and the plurality of balls (21) are respectively in rolling contact with the inner wall of the top and the inner wall of the bottom of the annular notch (162).

7. The heat dissipating structure of a set top box according to claim 1, wherein the cover (11) comprises an arc-shaped protrusion (111), two inclined portions (112), and two horizontal portions (113), the two inclined portions (112) are symmetrically disposed on two sides of the arc-shaped protrusion (111), the plurality of air inlet guiding holes (1121) are respectively and uniformly distributed on the two inclined portions (112), the apertures of the air inlet guiding holes (1121) are horizontally disposed, the two horizontal portions (113) are respectively disposed on one sides of the two inclined portions (112) far away from the arc-shaped protrusion (111), and the two horizontal portions (113) are fixedly connected to the housing (10) through a plurality of screws (30).

8. The heat dissipating structure of a set-top box according to claim 7, wherein the top of each of the two horizontal portions (113) has a mounting notch (1131), the inner wall of the bottom of the mounting notch (1131) has a plurality of insertion holes (1132) with equal distance, the inner wall of one side of the through hole (101) away from each other has a mounting protrusion (102) matching with the mounting notch (1131), the top of the mounting protrusion (102) has a plurality of screw holes (1021) corresponding to the insertion holes (1132), and the screws (30) are used for fixing the cover (11) by the cooperation of the insertion holes (1132) and the screw holes (1021).

9. The heat dissipating structure of a set top box according to claim 5, wherein the adjusting mechanism further comprises a rotating rod (28) rotatably penetrating the top of the cover (11), the rotating rod (28) is located on the arc-shaped protrusion (111), the top end of the rotating rod (28) extends into the rotating tube (14) and is provided with a spline groove (281), the bottom end of the lifting screw (25) is fixedly connected with a spline shaft (251) in spline connection with the spline groove (281), and the bottom end of the rotating rod (28) extends to the lower side of the cover (11) and is fixedly connected with a knob (29).

10. The heat dissipating structure of a set top box according to claim 1, wherein the top wall of the lower cover (12) has inclined air guiding surfaces (121) on both sides.