CN216057984U

CN216057984U - Heat radiator for STB

Info

Publication number: CN216057984U
Application number: CN202121624946.7U
Authority: CN
Inventors: 刘威智; 谷浩
Original assignee: Suzhou Mengjun Electronics Co ltd
Current assignee: Suzhou Mengjun Electronics Co ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2022-03-15
Anticipated expiration: 2031-07-16

Abstract

The utility model relates to the technical field of set top boxes, in particular to a heat dissipation device of a set top box, which comprises a shell, a top cover and a heat dissipation mechanism, wherein the top cover covers the top of the shell, the shell comprises an outer layer and a metal heat conduction layer positioned on the inner side of the outer layer, a vacuum heat insulation plate is clamped between the outer layer and the metal heat conduction layer, the heat dissipation mechanism comprises a semiconductor refrigeration sheet, heat dissipation fins and a heat dissipation fan, a first mounting hole for accommodating the semiconductor refrigeration sheet is formed in the center of the bottom of the shell, the upper portion of the first mounting hole extends to the bottom of the heat conduction layer, and the bottom of the semiconductor refrigeration sheet is sequentially provided with the heat dissipation fins and the heat dissipation fan. According to the utility model, the metal heat conduction layer and the vacuum heat insulation plate are arranged, so that heat emitted to the outside of the shell can be blocked outside the shell by the vacuum heat insulation plate, the heat is prevented from being reintroduced into the shell, the heat dissipation effect of the set top box is ensured, and meanwhile, no air exchange exists between the inside of the shell and the outside during the heat dissipation period, and the phenomenon that ash in the outside air enters the inside of the shell can not occur.

Description

Heat radiator for STB

Technical Field

The utility model relates to the technical field of set top boxes, in particular to a heat dissipation device of a set top box.

Background

With the development of economy, people are more and more willing to know the external situation through the network television, so the set-top box is basically used for a long time in the actual use process, a large amount of heat is often generated in the use process, if the heat cannot be dissipated timely, the accelerated aging of the internal circuit of the set-top box is easily caused, and the serious potential safety hazard is possibly generated.

The existing patent with publication number CN208095030U discloses a heat dissipation device for a network television set-top box, which achieves the purpose of circularly dissipating heat of the set-top box, avoids line aging caused by difficulty in dissipating heat generated by the set-top box, prolongs the service life of the set-top box, and reduces potential safety hazards caused by heat accumulation. However, the heat dissipated by the heat dissipating device of the set-top box is accumulated near the heat dissipating box, so that the heat is re-introduced into the heat dissipating box, thereby causing the problem of poor heat dissipating effect.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides the heat dissipation device of the set top box, which can isolate the heat transfer between the inside of the shell and the external environment and solve the problem of poor heat dissipation effect of the existing set top box.

(II) technical scheme

In order to achieve the purpose of isolating heat transfer between the interior of the shell and the external environment, the utility model provides the following technical scheme: the utility model provides a heat abstractor of STB, fits including casing, lid the top cap and the heat dissipation mechanism at casing top, the casing includes the skin and is located outer inboard metal heat-conducting layer, it is equipped with the vacuum insulation board to press from both sides between skin and the metal heat-conducting layer, heat dissipation mechanism includes semiconductor refrigeration piece, radiating fin and radiator fan, the holding has been seted up at casing bottom center the first mounting hole of semiconductor refrigeration piece, and first mounting hole top extend to heat-conducting layer bottom, semiconductor refrigeration piece bottom is equipped with radiating fin and radiator fan in proper order, the hot face of semiconductor refrigeration piece with cold face through heat conduction silica gel respectively with radiating fin and heat-conducting layer bonding are fixed.

Optionally, the heat dissipation mechanism still includes temperature sensor and the plc controller of communication connection with it, temperature sensor install in inside the casing for detect its inside temperature, the plc controller with electricity is connected between the radiator fan.

Optionally, a second mounting hole for mounting the temperature sensor is formed in the heat conduction layer of the inner side wall of the shell, and the temperature sensor is bonded in the second mounting hole through heat conduction silica gel.

Optionally, the support component comprises four support columns with internal threads, wherein the four support columns are fixedly arranged at four corners of the bottom of the shell, the bottoms of the support columns are in threaded connection with screws, knobs are fixedly arranged at the bottoms of the screws, and anti-skid grains are formed in the side walls of the knobs along the height directions of the side walls of the knobs.

Optionally, a rubber pad is arranged at the bottom of the knob, and the rubber pad is fixedly bonded with the knob.

Optionally, the heat conduction device further comprises a fixing assembly arranged inside the shell and used for fixing the set top box inside the shell, the fixing assembly comprises four L-shaped angle plates arranged at four top corners of the set top box, the angle plates and the heat conduction layer are connected and fixed through connecting blocks, two groups of extrusion plates are arranged on the inner sides of the angle plates, the extrusion plates are connected with the angle plates through springs, and one sides, far away from the springs, of the extrusion plates are attached to the outer wall of the set top box.

(III) advantageous effects

Compared with the prior art, the utility model provides a heat dissipation device of a set top box, which has the following beneficial effects:

1. according to the set top box, the metal heat conduction layer and the vacuum heat insulation plate are arranged, heat emitted to the outside of the shell can be blocked outside the shell by the vacuum heat insulation plate, the heat is prevented from being reintroduced into the shell, so that the heat dissipation effect of the set top box is ensured, and meanwhile, no air exchange exists between the inside of the shell and the outside during heat dissipation, so that the phenomenon that ash in the outside air enters the inside of the shell is avoided;

2. according to the utility model, the supporting component is arranged, and the heat dissipation mechanism at the bottom of the shell is supported off the ground by the supporting component, so that normal air intake of the air intake surface at the bottom surface of the heat dissipation fan can be ensured;

3. the utility model is provided with the temperature sensor and the plc controller, the temperature sensor monitors the temperature change in the shell in real time and transmits the temperature information to the plc controller, and the plc controller reasonably controls the opening and closing of the cooling fan and the semiconductor refrigerating sheet according to the real-time temperature, thereby saving the power resource.

Drawings

FIG. 1 is a schematic cross-sectional front view of the present invention;

FIG. 2 is an enlarged schematic view of FIG. 1 at A according to the present invention;

FIG. 3 is an enlarged view of the structure of FIG. 1 at B according to the present invention;

fig. 4 is a schematic structural diagram of the fixing assembly of the present invention.

In the figure: 1. a housing; 2. a top cover; 3. a fixing assembly; 31. a gusset; 32. connecting blocks; 33. a pressing plate; 34. a spring; 4. a semiconductor refrigeration sheet; 5. a first mounting hole; 6. a heat dissipating fin; 7. a heat radiation fan; 8. a temperature sensor; 9. a second mounting hole; 10. a plc controller; 11. a support pillar; 12. a screw; 13. a knob; 14. a rubber pad; 15. a heat conductive layer; 16. a vacuum insulation panel; 17. and (4) an outer layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): referring to fig. 1 to 4, an embodiment of the present invention provides a technical solution: a heat dissipating double-fuselage of the set-top box, including the body 1, cover top cover 2 and heat-dissipating organization in the top of body 1, the body 1 includes outer 17 and metal heat-conducting layer 15 located in outer 17 inboard, press from both sides and have vacuum heat insulating board 16 between outer 17 and metal heat-conducting layer 15, the heat-dissipating organization includes the semiconductor refrigeration slice 4, heat-dissipating fin 6 and radiator fan 7, the centre of bottom of body 1 has first mounting hole 5 to hold semiconductor refrigeration slice 4, and extend to the bottom of heat-conducting layer 15 above the first mounting hole 5, the semiconductor refrigeration slice 4 bottom has heat-dissipating fin 6 and radiator fan 7 sequentially, the hot side and cold side of the semiconductor slice 4 are fixed with heat-dissipating fin 6 and heat-conducting layer 15 through the adhesive of heat-conducting silica gel separately, during the set-top box uses, the radiator fan 7 and semiconductor refrigeration slice 4 are started up electrically, the heat that the set-top box distributes is conducted to the cold side of the semiconductor refrigeration slice 4 through the metal heat-conducting layer 15, the heat is given off to radiating fin 6 through 4 hot faces of semiconductor refrigeration piece, radiator fan 7 can accelerate radiating fin 6's radiating rate, the heat that gives off to the external world can be by the separation of vacuum insulation board 16 in casing 1 outside, heat reintroduction casing 1 is inside has been avoided, thereby the radiating effect of STB has been guaranteed, and simultaneously, because there is not the air exchange between casing 1 inside and the external world during the heat dissipation, the ash in the external air can not appear and enters into the inside phenomenon of casing 1, thereby the life of STB has been prolonged.

On the basis of the above embodiment, the heat dissipation mechanism further includes a temperature sensor 8 and a plc controller 10 in communication connection with the temperature sensor 8, the temperature sensor 8 is installed inside the housing 1 and used for detecting the internal temperature thereof, the plc controller 10 is electrically connected with the cooling fan 7, during the heat dissipation of the set-top box, the temperature sensor 8 monitors the temperature change inside the housing 1 in real time and transmits the temperature information to the plc controller 10, the plc controller 10 controls the opening and closing of the cooling fan 7 and the semiconductor chilling plate 4 according to the real-time temperature, when the temperature is too high, the plc controller 10 controls the starting of the cooling fan 7 and the semiconductor chilling plate 4 to enter a heat dissipation program, otherwise, the plc controller 10 controls the closing of the cooling fan 7 and the semiconductor chilling plate 4, so as to save power resources.

On the basis of the above embodiment, in order to improve the accuracy of temperature detection, the second mounting hole 9 for mounting the temperature sensor 8 is opened on the heat conduction layer 15 on the inner side wall of the casing 1, the temperature sensor 8 is adhered in the second mounting hole 9 through the heat conduction silica gel, and since most of heat is collected on the heat conduction layer 15, the detection accuracy of the temperature sensor 8 can be ensured by tightly connecting the temperature sensor 8 and the heat conduction layer 15 in the casing 1 through the heat conduction silica gel.

On the basis of above-mentioned embodiment, still include supporting component, supporting component is including setting firmly four support columns 11 that have the internal screw thread in 1 bottom four corners department of casing, support column 11 bottom threaded connection has screw rod 12, screw rod 12 bottom has set firmly knob 13, and knob 13 lateral wall has seted up anti-skidding line along its direction of height, utilize supporting component to prop the heat dissipation mechanism of 1 bottom of casing off ground, can guarantee that the inlet face of radiator fan 7 bottom surface is normally admitted air, and the design of screw rod 12, through rotatory knob 13, adjust the extension length of screw rod 12, can adjust the levelness of putting of casing 1, make the STB can the level place subaerially.

On the basis of the above embodiment, in order to improve the stability of the set-top box after being placed, the bottom of the knob 13 is provided with the rubber pad 14, the rubber pad 14 is fixedly bonded with the knob 13, the rubber pad 14 can play a role in skid resistance, the shell 1 is prevented from sliding on the placing table, and the stability of the shell is improved.

On the basis of the above embodiment, still including setting up the fixed subassembly 3 in casing 1 inside, a set-top box for fixing casing 1 inside, fixed subassembly 3 is including four gussets 31 that are the L form of locating four apex angle departments of set-top box, connect fixedly through connecting block 32 between gusset 31 and the heat-conducting layer 15, every gusset 31 inboard all is equipped with two sets of stripper plates 33, be connected through spring 34 between stripper plate 33 and the gusset 31, and one side that stripper plate 33 kept away from spring 34 pastes the set-top box outer wall, during the heat dissipation of set-top box, the start-up of radiator fan 7 can produce the vibration, spring 34 then can slow down the vibration that the set-top box received, avoid electronic components in the set-top box to receive the vibration and damage, the life of extension set-top box.

The working principle is as follows: during the use of the set-top box, the temperature sensor 8 can monitor the temperature change inside the shell 1 in real time and transmit the temperature information to the plc controller 10, the plc controller 10 controls the opening and closing of the cooling fan 7 and the semiconductor chilling plates 4 according to the real-time temperature, when the temperature is too high, the plc controller 10 controls the starting of the cooling fan 7 and the semiconductor chilling plates 4 to enter a heat dissipation program, otherwise, the plc controller 10 controls the closing of the cooling fan 7 and the semiconductor chilling plates 4 to save power resources, when the temperature in the shell 1 is too high, the cooling fan 7 and the semiconductor chilling plates 4 are powered on to start, the heat dissipated by the set-top box is conducted to the cold faces of the semiconductor chilling plates 4 through the metal heat conduction layer 15, the heat is dissipated to the cooling fins 6 through the hot faces of the semiconductor chilling plates 4, the cooling fan 7 can accelerate the heat dissipation speed of the cooling fins 6, and the heat dissipated to the outside can be blocked outside the shell 1 by the vacuum insulation plates 16, the situation that heat is re-introduced into the shell 1 is avoided, the heat dissipation effect of the set top box is guaranteed, meanwhile, due to the fact that air exchange does not exist between the interior of the shell 1 and the outside during heat dissipation, the phenomenon that dust in the outside air enters the shell 1 is avoided, the service life of the set top box is prolonged, during the heat dissipation of the set top box, vibration can be generated due to the fact that the cooling fan 7 is started, the spring 34 can slow down the vibration of the set top box, the situation that electronic components in the set top box are damaged due to vibration is avoided, and the service life of the set top box is further prolonged.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A heat abstractor of STB which characterized in that: comprises a shell (1), a top cover (2) covering the top of the shell (1) and a heat dissipation mechanism, the housing (1) comprises an outer layer (17) and a metallic heat conducting layer (15) located inside the outer layer (17), a vacuum heat insulation plate (16) is clamped between the outer layer (17) and the metal heat conduction layer (15), the heat dissipation mechanism comprises a semiconductor refrigeration sheet (4), heat dissipation fins (6) and a heat dissipation fan (7), a first mounting hole (5) for accommodating the semiconductor refrigerating sheet (4) is formed in the center of the bottom of the shell (1), and the upper part of the first mounting hole (5) extends to the bottom of the heat conduction layer (15), the bottom of the semiconductor refrigerating sheet (4) is sequentially provided with a radiating fin (6) and a radiating fan (7), the hot side and the cold side of the semiconductor refrigeration sheet (4) are respectively bonded and fixed with the radiating fins (6) and the heat conducting layer (15) through heat conducting silica gel.

2. The heat dissipating device of a set top box according to claim 1, wherein: the heat dissipation mechanism further comprises a temperature sensor (8) and a plc controller (10) in communication connection with the temperature sensor, wherein the temperature sensor (8) is installed inside the shell (1) and used for detecting the internal temperature of the shell, and the plc controller (10) is electrically connected with the heat dissipation fan (7).

3. The heat dissipating device of a set top box according to claim 2, wherein: offer on heat-conducting layer (15) of casing (1) inside wall and be used for the installation second mounting hole (9) of temperature sensor (8), temperature sensor (8) through heat-conducting silica gel bond in second mounting hole (9).

4. The heat dissipating device of a set top box according to claim 1, wherein: the anti-skid device is characterized by further comprising a supporting part, wherein the supporting part comprises four supporting columns (11) which are fixedly arranged at four corners of the bottom of the shell (1) and provided with internal threads, screw rods (12) are connected to the bottoms of the supporting columns (11) in a threaded manner, knobs (13) are fixedly arranged at the bottom ends of the screw rods (12), and anti-skid grains are formed in the side walls of the knobs (13) along the height direction of the side walls.

5. The heat dissipating device of a set top box according to claim 4, wherein: the bottom of the knob (13) is provided with a rubber pad (14), and the rubber pad (14) is fixedly bonded with the knob (13).

6. The heat dissipating device of a set top box according to claim 1, wherein: the heat conduction layer is characterized by further comprising a fixing component (3) arranged inside the shell (1) and used for fixing the set top box inside the shell (1), wherein the fixing component (3) comprises four corner plates (31) which are L-shaped and arranged at four top corners of the set top box, the corner plates (31) are fixedly connected with the heat conduction layer (15) through connecting blocks (32), two groups of extrusion plates (33) are arranged on the inner sides of the corner plates (31), the extrusion plates (33) are connected with the corner plates (31) through springs (34), and one sides, far away from the springs (34), of the extrusion plates (33) are attached to the outer wall of the set top box.