Heat dissipation device of television light cloud box

Abstract

The utility model discloses a heat dissipation device of a television light cloud box. The heat dissipation device comprises a shell. A mounting cavity is formed in the shell, and the mounting cavity is used for mounting the PCB, the control circuit board and the heat dissipation device; a control circuit is arranged on the control circuit board and used for controlling the heat dissipation device; the heat dissipation device comprises a heat dissipation fan, a driving motor, a rotating part, a sliding plate and a connecting rod; the cooling fan is arranged above the shell, and an output shaft of the driving motor is connected with the rotating part; the sliding plate is arranged in the shell in a sliding manner; heat dissipation holes are formed in the inner wall of the shell; the connecting rod is arranged on the rotating part, and the end part of the connecting rod is fixedly connected with the sliding plate; the connecting rod is used for driving the sliding plate to slide. According to the utility model, through the control circuit, the intelligent control of the heat dissipation fan and the heat dissipation device can be realized, and the heat dissipation intensity can be automatically adjusted according to the change of the internal temperature of the equipment, so that the problem of overheating of the equipment is effectively avoided.

Description

Technical Field

[0001] This utility model belongs to the field of heat sink technology, specifically a heat dissipation device for a TV light cloud box. Background Technology

[0002] A TV Light Cloud Box (also known as a Digital TV Light Cloud Box or Smart TV Light Cloud Box) is an electronic device that connects to a television. It's an upgraded version of the traditional set-top box, featuring a smaller size, more powerful performance, and richer functionality. It can integrate various audiovisual services and non-audiovisual applications. Users can use the TV Light Cloud Box to watch live TV channels and on-demand videos (movies, TV series, children's content, and educational content) from the operator's IPTV / OTT TV platform via the internet or the operator's dedicated network. The TV Light Cloud Box also supports the download and installation of various applications, allowing users to play games, sing karaoke, view files, cast screens, and use cloud computing, among other things.

[0003] In the prior art, for example, the technical solution described in patent CN218920505U is a novel TV box with a heat dissipation structure. The main body of the TV box has heat dissipation windows on both sides, and a removable dustproof and breathable mesh and a sliding groove are built in it. A horizontally sliding slider is located within the sliding groove. A motor is installed in the removable heat dissipation base at the bottom, and the motor is connected to a fan for heat dissipation. In addition, positioning posts are provided at the four corners of the bottom of the TV box.

[0004] In existing technologies, although TV boxes are equipped with fans for heat dissipation, the fans installed in the TV boxes cannot adjust their speed according to changes in the internal temperature of the TV boxes. This results in an ineffective heat dissipation effect and causes heat to easily accumulate inside the TV boxes. Utility Model Content

[0005] The purpose of this utility model is to provide a heat dissipation device for a TV box, so as to solve the problem in the prior art mentioned in the background that TV boxes have poor heat dissipation and are prone to heat accumulation.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A heat dissipation device for a TV lightweight cloud box includes a housing; an installation cavity is provided inside the housing for mounting a PCB board, a control circuit board, and a heat dissipation device; a control circuit is provided on the control circuit board for controlling the heat dissipation device.

[0008] The heat dissipation device includes a cooling fan, a drive motor, a rotating part, a sliding plate, and a connecting rod; wherein, the cooling fan is located on the top of the outer casing, the drive motor is fixedly mounted on the inner wall of the outer casing, and the output shaft of the drive motor is connected to the rotating part;

[0009] The sliding plate is slidably arranged in the interior of the shell; the inner wall of the shell is provided with a heat dissipation hole, and the sliding plate is used for closing the heat dissipation hole; the connecting rod is arranged on the rotating part, and the end of the connecting rod is fixedly connected with the sliding plate; the connecting rod is used for driving the sliding plate to slide.

[0010] According to the technical scheme, the end of the shell is further provided with a connecting end, and the connecting end is used for connecting the PCB and external original components.

[0011] According to the technical scheme, a sliding groove is further arranged in the interior of the shell, and the sliding groove is used for mounting the sliding plate.

[0012] According to the technical scheme, the control circuit comprises a chip U1, a motor control circuit, a fan control circuit and a sensor circuit; wherein the chip U1 is connected with the motor control circuit, the fan control circuit and the sensor circuit respectively.

[0013] According to the technical scheme, the motor control circuit comprises a resistor R11, a transistor Q1 and a driving motor; wherein one end of the resistor R11 is connected with the 24th pin of the chip U1; the other end of the resistor R11 is connected with the base of the transistor Q1; the emitter of the transistor Q1 is connected with a power supply; the collector of the transistor Q1 is connected with one end of the driving motor, and the other end of the driving motor is grounded.

[0014] According to the technical scheme, the fan control circuit comprises a chip U3, a capacitor C1, a capacitor C2, a resistor R14, a resistor R15 and a cooling fan; wherein the 1st pin of the chip U3 is connected with the capacitor C1 and one end of the cooling fan respectively; the 4th pin of the chip U3 is connected with the capacitor C1 and the other end of the cooling fan respectively; the 2nd pin of the chip U3 is connected with the 3rd pin of the chip U3 and one end of the capacitor C2 respectively; the other end of the capacitor C2 is connected with the 8th pin of the chip U3 and a power supply respectively;

[0015] the 7th pin of the chip U3 is connected with one end of the resistor R14 and the chip U1 respectively, and the other end of the resistor R14 is connected with a power supply; the 6th pin of the chip U3 is connected with one end of the resistor R15 and the chip U1 respectively; the other end of the resistor R15 is connected with a power supply;

[0016] the 5th pin of the chip U3 is grounded.

[0017] According to the technical scheme, the 2nd pin and the 3rd pin of the chip U3 are further connected with a power supply.

[0018] According to the technical scheme, the 7th pin of the chip U3 is connected with the 10th pin of the chip U1, and the 6th pin of the chip U3 is connected with the 11th pin of the chip U1.

[0019] According to the technical scheme, the sensor circuit comprises a chip U2 and a resistor R12, a No. 1 pin of the chip U2 is connected to the ground, a No. 2 pin of the chip U2 is connected to a No. 37 pin of a chip U1 and one end of the resistor R12 respectively, the other end of the resistor R12 is connected to the power supply, and a No. 3 pin of the chip U2 is connected to the power supply.

[0020] According to the technical scheme, the chip U1 is connected with a minimum unit circuit, the minimum unit circuit comprises a capacitor C10, a capacitor C11, a crystal oscillator X1, a button K1, a capacitor C12 and a resistor R10, a No. 19 pin of the chip U1 is connected to one end of the capacitor C10 and one end of the crystal oscillator X1 respectively, a No. 18 pin of the chip U1 is connected to one end of the capacitor C11 and the other end of the crystal oscillator X1 respectively, the other end of the capacitor C10 is connected to the other end of the capacitor C11,

[0021] a No. 9 pin of the chip U1 is connected to the capacitor C12, the resistor R10 and one end of the button K1 respectively, the other end of the capacitor C12 and the button K1 is connected to the power supply respectively, and the other end of the resistor R10 is connected to the ground.

[0022] Compared with the prior art, the utility model has the advantages of the following beneficial effects:

[0023] In the utility model, through the control circuit, the intelligent control of the heat dissipation fan and the heat dissipation device can be realized, the heat dissipation intensity is automatically adjusted according to the change of the temperature inside the equipment, and therefore the problem of overheating of the equipment is effectively avoided.

[0024] The sliding plate arranged in the utility model can close the heat dissipation hole when heat dissipation is not needed, reduces the entry of external dust and sundries into the shell, protects the internal electronic elements, and therefore prolongs the service life of the equipment.

[0025] The design of the sliding plate and the connecting rod enables the opening and closing of the heat dissipation hole to be carried out smoothly and quickly, adapts to different working environments and heat dissipation requirements, and achieves flexible response. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is one of the internal structure schematic views of the device of the utility model;

[0027] Figure 2 It is the second internal structure schematic view of the device of the utility model;

[0028] Figure 3 It is the chip U1 and motor control circuit diagram of the utility model;

[0029] Figure 4 It is the fan control circuit diagram of the utility model;

[0030] Figure 5 It is the sensor circuit diagram of the utility model.

[0031] Marked in the figure: 100 - shell, 200 - mounting cavity, 300 - cooling fan, 400 - drive motor, 500 - rotating part, 600 - sliding plate, 700 - connecting rod, 800 - cooling hole, 900 - connecting end, 110 - sliding groove. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] Embodiment one

[0034] As shown in Figure 1 and Figure 2 , a heat dissipation device of a television light cloud box, comprising a shell 100; a mounting cavity 200 is arranged in the inside of the shell 100, and the mounting cavity 200 is used for mounting a PCB, a control circuit board and a heat dissipation device; a control circuit is arranged on the control circuit board and is used for controlling the heat dissipation device;

[0035] The heat dissipation device comprises a cooling fan 300, a drive motor 400, a rotating part 500, a sliding plate 600 and a connecting rod 700; wherein the cooling fan 300 is arranged above the shell 100, the drive motor 400 is fixedly arranged on the inner wall of the shell 100, and the output shaft of the drive motor 400 is connected with the rotating part 500;

[0036] As shown in Figure 2 , the sliding plate 600 is slidingly arranged in the inside of the shell 100; a cooling hole 800 is arranged on the inner wall of the shell 100, and the sliding plate 600 is used for closing the cooling hole 800; the connecting rod 700 is arranged on the rotating part 500, and the end of the connecting rod 700 is fixedly connected with the sliding plate 600; the connecting rod 700 is used for driving the sliding plate 600 to slide.

[0037] In the present application, through the control circuit, intelligent control of the cooling fan 300 and the heat dissipation device can be realized, the heat dissipation intensity is automatically adjusted according to the change of the internal temperature of the equipment, and thus the problem of overheating of the equipment is effectively avoided.

[0038] The sliding plate 600 arranged in the present application can close the cooling hole 800 when heat dissipation is not needed, the external dust and sundries are reduced to enter the inside of the shell 100, the internal electronic elements are protected, and thus the service life of the equipment is prolonged.

[0039] Further, the left and right sides of the shell 100 are provided with heat dissipation holes 800, and corresponding sliding plates 600 are arranged in the interior of the shell 100, and the left and right ends of the connecting rod 700 are respectively connected with a sliding plate 600.

[0040] Further, the rotating part 500 adopts an existing device, for example, a ball screw assembly. The rotating part 500 is driven to rotate by the driving motor 400, thereby driving the connecting rod 700 to move, and further driving the sliding plate 600 to move.

[0041] The design of the sliding plate 600 and the connecting rod 700 enables the opening and closing of the heat dissipation holes 800 to be smooth and fast, and to adapt to different working environments and heat dissipation requirements, and to be flexible in response.

[0042] The cooperation design of the heat dissipation fan 300 and the sliding plate 600 can effectively improve the air circulation and heat dissipation efficiency, and ensure the stability and safety of the equipment in high load operation.

[0043] Since all components are arranged in the mounting cavity 200, the structure of the entire device is relatively compact, and easy to install and maintain.

[0044] Embodiment Two

[0045] This embodiment is a further refinement of Embodiment One.

[0046] The end of the shell 100 is also provided with a connecting end 900, which is used to connect the PCB and external components.

[0047] Specifically, the connecting end 900 is connected with the PCB, which is used to connect the PCB and external components, and is used to input signals to the PCB or output signals from the PCB to the outside through the connecting end 900.

[0048] The shell 100 is also provided with a sliding groove 110 in the interior, which is used for the installation of the sliding plate 600.

[0049] Specifically, the sliding groove 110 is arranged in the interior of the shell 100, and the sliding groove 110 is arranged in the upper and lower parts of the shell 100. The sliding plate 600 is slidingly arranged in the interior of the sliding groove 110, and the sliding plate 600 is limited by the sliding groove 110, so that the sliding direction of the sliding plate 600 is fixed (only left and right sliding).

[0050] Embodiment Three

[0051] This embodiment is a further refinement of Embodiment Two.

[0052] As Figure 3As shown, the control circuit includes chip U1, motor control circuit, fan control circuit and sensor circuit; wherein chip U1 is connected to the motor control circuit, fan control circuit and sensor circuit respectively.

[0053] like Figure 3 As shown, the motor control circuit includes a resistor R11, a transistor Q1, and a drive motor 400. One end of the resistor R11 is connected to pin 24 of the chip U1; the other end of the resistor R11 is connected to the base of the transistor Q1; the emitter of the transistor Q1 is connected to the power supply; the collector of the transistor Q1 is connected to one end of the drive motor 400, and the other end of the drive motor 400 is grounded.

[0054] like Figure 4 As shown, the fan control circuit includes chip U3, capacitors C1 and C2, resistors R14 and R15, and a cooling fan 300. Pin 1 of chip U3 is connected to one end of capacitor C1 and the cooling fan 300. Pin 4 of chip U3 is connected to the other end of capacitor C1 and the cooling fan 300. Pin 2 of chip U3 is connected to pin 3 of chip U3 and one end of capacitor C2. The other end of capacitor C2 is connected to pin 8 of chip U3 and the power supply.

[0055] Pin 7 of chip U3 is connected to one end of resistor R14 and chip U1 respectively, and the other end of resistor R14 is connected to the power supply; pin 6 of chip U3 is connected to one end of resistor R15 and chip U1 respectively, and the other end of resistor R15 is connected to the power supply.

[0056] Pin 5 of chip U3 is grounded.

[0057] Pins 2 and 3 of chip U3 are still connected to the power supply.

[0058] Pin 7 of chip U3 is connected to pin 10 of chip U1, and pin 6 of chip U3 is connected to pin 11 of chip U1.

[0059] like Figure 5 As shown, the sensor circuit includes chip U2 and resistor R12. Pin 1 of chip U2 is grounded, pin 2 of chip U2 is connected to pin 37 of chip U1 and one end of resistor R12, respectively; the other end of resistor R12 is connected to the power supply; pin 3 of chip U2 is connected to the power supply.

[0060] The chip U1 is connected with a minimum unit circuit; the minimum unit circuit comprises a capacitor C10, a capacitor C11, a crystal oscillator X1, a button K1, a capacitor C12 and a resistor R10; the 19th pin of the chip U1 is connected with one end of the capacitor C10 and one end of the crystal oscillator X1 respectively; the 18th pin of the chip U1 is connected with one end of the capacitor C11 and the other end of the crystal oscillator X1 respectively; the other end of the capacitor C10 is connected with the other end of the capacitor C11;

[0061] The 9th pin of the chip U1 is connected with the capacitor C12, the resistor R10 and one end of the button K1 respectively; the other end of the capacitor C12 and the other end of the button K1 are connected with a power supply respectively; the other end of the resistor R10 is grounded.

[0062] The components used in the utility model are all the existing devices. For example, the chip U2 is a temperature sensor.

[0063] The working principle of the utility model is as follows: when the device works normally, the cooling fan 300 is started, and the inside of the shell 100 is cooled at a low speed, when the sensor circuit detects that the temperature inside the shell 100 rises to a certain threshold value (for example, 70 DEG C), the chip U1 controls the motor control circuit and the fan control circuit to start; the fan control circuit increases the rotating speed of the cooling fan 300, the motor control circuit controls the driving motor 400 to rotate, and drives the connecting rod 700 to move, so as to drive the sliding plate 600 to move together, open the cooling hole 800, further improve the cooling capacity, so that the temperature inside the shell 100 can be controlled rapidly, and the temperature inside the shell 100 is prevented from being too high to cause the PCB to be damaged.

[0064] It should be noted that, in the present document, relational terms such as first and second and the like can 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. Moreover, 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 can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0065] Finally, it should be noted that: the above only for preferred embodiments of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part technical features. Any modification, equivalent replacement, improvement etc. made within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A heat dissipating device for a television set-top box, characterized by: The application relates to a heat dissipation device for a PCB, which comprises a shell (100), a mounting cavity (200) arranged in the interior of the shell (100), a control circuit board and a heat dissipation device arranged in the mounting cavity (200), a control circuit arranged on the control circuit board and used for controlling the heat dissipation device, and a heat dissipation fan (300), a driving motor (400), a rotating part (500), a sliding plate (600) and a connecting rod (700). The heat dissipation fan (300) is arranged above the shell (100), the driving motor (400) is fixedly arranged on the inner wall of the shell (100), and the output shaft of the driving motor (400) is connected with the rotating part (500). The sliding plate (600) is slidingly arranged in the interior of the shell (100), a heat dissipation hole (800) is arranged on the inner wall of the shell (100), the sliding plate (600) is used for closing the heat dissipation hole (800), the connecting rod (700) is arranged on the rotating part (500), and the end of the connecting rod (700) is fixedly connected with the sliding plate (600); and the connecting rod (700) is used for driving the sliding plate (600) to slide.

2. The heat dissipating device of a TV set-top box according to claim 1, characterized in that: The end of the shell (100) is further provided with a connecting end (900) used for connecting the PCB with external original components.

3. The heat dissipating device of a TV set-top box according to claim 2, characterized in that: A sliding groove (110) is further arranged in the interior of the shell (100) and used for mounting the sliding plate (600).

4. The heat dissipating device of a TV set-top box according to claim 3, characterized in that: The control circuit comprises a chip U1, a motor control circuit, a fan control circuit and a sensor circuit; wherein the chip U1 is connected with the motor control circuit, the fan control circuit and the sensor circuit.

5. The heat dissipating device of a television set-top box according to claim 4, wherein: The motor control circuit comprises a resistor R11, a triode Q1 and the driving motor (400); wherein one end of the resistor R11 is connected with the 24th pin of the chip U1; the other end of the resistor R11 is connected with the base of the triode Q1; the emitter of the triode Q1 is connected with a power supply; and the collector of the triode Q1 is connected with one end of the driving motor (400), and the other end of the driving motor (400) is grounded.

6. A heat dissipating device for a television set-top box as defined in claim 5, wherein: The fan control circuit comprises a chip U3, a capacitor C1, a capacitor C2, a resistor R14, a resistor R15 and the heat dissipation fan (300); wherein the 1st pin of the chip U3 is connected with the capacitor C1 and one end of the heat dissipation fan (300); the 4th pin of the chip U3 is connected with the capacitor C1 and the other end of the heat dissipation fan (300); the 2nd pin of the chip U3 is connected with the 3rd pin of the chip U3 and one end of the capacitor C2; the other end of the capacitor C2 is connected with the 8th pin of the chip U3 and a power supply; the 7th pin of the chip U3 is connected with one end of the resistor R14 and the chip U1, and the other end of the resistor R14 is connected with a power supply; the 6th pin of the chip U3 is connected with one end of the resistor R15 and the chip U1, and the other end of the resistor R15 is connected with a power supply; the 5th pin of the chip U3 is grounded.

7. A heat dissipating device for a television set-top box as defined in claim 6, wherein: The 2nd pin and the 3rd pin of the chip U3 are further connected with a power supply.

8. The heat dissipating device of a TV set-top box according to claim 7, characterized in that: The 7th pin of the chip U3 is connected with the 10th pin of the chip U1, and the 6th pin of the chip U3 is connected with the 11th pin of the chip U1.

9. The heat dissipating device of a television set-top box according to claim 8, wherein: The sensor circuit comprises a chip U2 and a resistor R12, a No.1 pin of the chip U2 is connected with the ground, a No.2 pin of the chip U2 is connected with a No.37 pin of the chip U1 and one end of the resistor R12 respectively; the other end of the resistor R12 is connected with the power supply; a No.3 pin of the chip U2 is connected with the power supply.

10. The heat dissipating device for a television set-top box according to claim 9, wherein: The chip U1 is connected with a minimum unit circuit; the minimum unit circuit comprises a capacitor C10, a capacitor C11, a crystal oscillator X1, a button K1, a capacitor C12 and a resistor R10; a No.19 pin of the chip U1 is connected with one end of the capacitor C10 and the crystal oscillator X1 respectively; a No.18 pin of the chip U1 is connected with one end of the capacitor C11 and the other end of the crystal oscillator X1 respectively; the other end of the capacitor C10 is connected with the other end of the capacitor C11; a No.9 pin of the chip U1 is connected with the capacitor C12, the resistor R10 and one end of the button K1 respectively; the other ends of the capacitor C12 and the button K1 are connected with the power supply respectively; the other end of the resistor R10 is connected with the ground.

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