Novel director box heat dissipation control circuit and novel director box

Abstract

The utility model discloses a novel director box heat radiation control circuit and a novel director box, and the novel director box heat radiation control circuit comprises a control MCU, a temperature detection module, a fan control module and a power switch module. The control MCU is connected with the temperature detection module, the fan control module and the power switch module. The power switch module is connected with a complete machine power supply; the MCU is controlled to adjust the fan speed in the fan control module according to the temperature change detected by the temperature detection module; and when the internal temperature of the director box exceeds a set value, the MCU is controlled to control the power switch module to turn off the whole machine power supply. The novel director box heat radiation control circuit disclosed by the utility model achieves the purposes that the wind speed of the heat radiation fan is adaptively adjusted according to the temperature in the director box and the power supply is turned off when the temperature in the director box is too high, and solves the problem that the service life and the performance of an integrated circuit are affected when the integrated circuit runs in the director box with the too high temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation circuits for production switchers, in particular to a novel heat dissipation control circuit for a production switcher and a novel production switcher. Background Art

[0002] A production switcher generally refers to equipment used in the production of radio and television programs. It is an integrated control unit with multiple functions for signal switching, control, monitoring, and distribution of live or recorded programs. The production switcher is designed to be portable, durable, and easy to use to adapt to different production environments and requirements. It plays a crucial role in live events such as news interviews, sports events, and concerts.

[0003] An integrated circuit is provided inside the production switcher, and a cooling fan is usually provided to dissipate heat from the control MCU, etc. The existing fan control circuit inside the production switcher cannot adjust the fan speed according to the actual temperature inside the production switcher; moreover, when the temperature inside the production switcher is too high, when the integrated circuit in the production switcher works in a continuously high-temperature environment, it is easy to cause problems such as aging of circuit materials and changes in semiconductor characteristics, reducing the service life and reliability of the production switcher circuit. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides a novel heat dissipation control circuit for a production switcher and a novel production switcher. Among them, the novel heat dissipation control circuit for a production switcher includes a control MCU, a temperature detection module, a fan control module, and a power switch module; wherein:

[0005] The control MCU is respectively connected to the temperature detection module, the fan control module, and the power switch module; the power switch module is connected to the main power supply of the whole machine;

[0006] The control MCU adjusts the fan speed in the fan control module according to the temperature change detected by the temperature detection module;

[0007] When the internal temperature of the production switcher exceeds the set value, the control MCU controls the power switch module to turn off the main power supply of the whole machine.

[0008] Preferably, the power switch module includes a power input socket CN2, a power output socket CN3, a field effect transistor U59, and a triode Q5;

[0009] The power input socket CN2 is used to connect the input power supply;

[0010] The power output socket CN3 is used to supply power to the whole production switcher;

[0011] The power input socket CN2 is connected to the power output socket CN3 through the field effect transistor U59; the control MCU is connected to the field effect transistor U59 through the triode Q5.

[0012] Preferably, the control MCU is provided with a storage module.

[0013] Preferably, the control MCU is provided with a reserved interface.

[0014] Preferably, the fan control module is provided with a field effect transistor; the control MCU is connected to the fan through the field effect transistor; the control MCU controls the fan by adjusting the PWM duty cycle sent to the field effect transistor.

[0015] The present utility model also provides a new type of production switcher box, which adopts the new type of production switcher box heat dissipation control circuit described above arbitrarily.

[0016] Preferably, the new type of production switcher box includes a production switcher box body; the outer wall of the production switcher box body is provided with a first heat dissipation hole and a second heat dissipation hole; the first heat dissipation hole and the second heat dissipation hole are arranged opposite to each other;

[0017] A heat sink, a wind guide plate and a fan are arranged between the first heat dissipation hole and the second heat dissipation hole;

[0018] The heat sink is used to contact the heat source;

[0019] The heat sink and the wind guide plate form a wind guide channel; one end of the wind guide channel faces the first heat dissipation hole, and the other end faces the second heat dissipation hole; the fan is arranged at one end of the wind guide channel; the blowing direction of the fan is arranged along the length direction of the wind guide channel.

[0020] The new type of production switcher box heat dissipation control circuit provided by the present utility model, through the circuit design of the control MCU, the temperature detection module, the fan control module, and the power switch module; the control MCU can adjust the fan speed in the fan control module according to the temperature change detected by the temperature detection module; and when the temperature inside the production switcher box exceeds the set value, the control MCU controls the power switch module to turn off the power of the whole machine. Thus, the purpose of the heat dissipation fan's wind speed being adaptively adjusted according to the temperature inside the production switcher box and turning off the power when the temperature inside the production switcher box is too high is achieved, and the problem that the operation of the integrated circuit inside the production switcher box with too high internal temperature affects the service life and performance is solved. Description of the Drawings

[0021] Figure 1 It is a block diagram of the new type of production switcher box heat dissipation control circuit provided by the embodiment of the utility model;

[0022] Figure 2 It is a circuit diagram of the control MCU;

[0023] Figure 3 It is a circuit diagram of the temperature detection module;

[0024] Figure 4 is the circuit diagram of the fan control module;

[0025] Figure 5 is the circuit diagram of the power switch module;

[0026] Figure 6 is the circuit diagram of the reserved interface;

[0027] Figure 7 is the three-dimensional view of the new video switcher provided by the embodiment of the present utility model;

[0028] Figure 8 is Figure 7 exploded view of

[0029] Figure 9 is the three-dimensional view of another perspective of the new video switcher;

[0030] Figure 10 is the installation structure diagram of the heat sink, fan and air guide plate;

[0031] Figure 11 is the cross-sectional view of the air guide channel;

[0032] Wherein: 10, video switcher body; 11, first heat dissipation hole; 12, second heat dissipation hole; 20, heat sink; 21, fin; 30, air guide plate; 31, flange; 32, protruding part; 40, fan; 50, circuit board; 51, control MCU; 52, temperature detection module; 53, fan control module; 54, power switch module; 55, main power supply of the whole machine; 56, storage module; 60, threaded pillar; 61, bolt; 70, flat plate drive module; 80, mounting plate; 81, long through hole; 82, third heat dissipation hole. Detailed implementation manners

[0033] In order to make the technical means, creative features, achieved purposes and functions implemented by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments. However, the following embodiments are only the preferred embodiments of the present utility model, not all of them. Based on the embodiments in the implementation manners, other embodiments obtained by those skilled in the art without creative efforts all belong to the protection scope of the present utility model. The experimental methods in the following embodiments are all conventional methods unless otherwise specified. The materials, reagents, etc. used in the following embodiments can all be obtained from commercial channels unless otherwise specified.

[0034] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0035] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] The present utility model provides a novel video switcher heat dissipation control circuit and a novel video switcher. Among them, the novel video switcher heat dissipation control circuit includes a control MCU 51, a temperature detection module 52, a fan control module 53, and a power switch module 54; where:

[0037] The control MCU 51 is respectively connected to the temperature detection module 52, the fan control module 53, and the power switch module 54; the power switch module 54 is connected to the whole machine power supply 55;

[0038] The control MCU 51 adjusts the fan speed in the fan control module 53 according to the temperature change detected by the temperature detection module 52;

[0039] When the internal temperature of the video switcher exceeds the set value, the control MCU 51 controls the power switch module 54 to turn off the whole machine power supply 55.

[0040] During specific implementation, as Figures 1 - 6 shown, the novel video switcher heat dissipation control circuit includes a control MCU 51, a temperature detection module 52, a fan control module 53, and a power switch module 54; where: the control MCU 51 is respectively connected to the temperature detection module 52, the fan control module 53, and the power switch module 54; the power switch module 54 is connected to the whole machine power supply 55;

[0041] As Figure 2As shown in the figure, the control MCU 51 uses the chip U1 of the GD32F303RCT6 model; the control MCU 51 is provided with a voltage stabilizing circuit composed of a parallel-connected capacitor C8 and capacitors C1 - C7; through this voltage stabilizing circuit, a stable power supply is provided for the control MCU 51; the control MCU 51 is connected to a storage module 56; the storage module 56 uses the memory U6 of the AT24C64 model; the storage module 56 is used to store the set temperature value, and after power-off, the data stored by the control MCU 51 can also remain unchanged; it is crucial for saving configuration settings and historical records.

[0042] The control MCU 51 is also provided with a reserved interface J1 (as Figure 6 shown), when a certain module in the circuit is damaged or needs to be upgraded, the reserved interface J1 makes the replacement process simpler and faster, and reduces the maintenance and repair time of the system, improving the availability of the system;

[0043] As Figure 3 shown, the temperature detection module 52 includes temperature sensors U1, U2, U3, U4 of the HK1020 model, and the control MCU 51 is respectively connected to the temperature sensors U1, U2, U3, U4, and the temperature inside the production switcher box is detected through the temperature sensors U1, U2, U3, U4;

[0044] As Figure 4 shown, the fan control module 53 includes one or more fan seats; the fan seats are used to connect fans; the fan seats are connected to the control MCU 51 through a field effect transistor of the 2N7002 model; the control MCU 51 controls the fan by adjusting the PWM duty cycle sent to the field effect transistor;

[0045] As Figure 5 shown, the power switch module 54 includes a power input socket CN2, a power output socket CN3, a field effect transistor U59 and a triode Q5; the field effect transistor U59 is of the AO4441 model; the triode Q5 is of the MMBT3904 model;

[0046] The power input socket CN2 is used to connect the input power supply of the production switcher box; the power output socket CN3 is used to supply power to the whole production switcher box; the power input socket CN2 is connected to the power output socket CN3 through the field effect transistor U59; the control MCU 51 is connected to the field effect transistor U59 through the triode Q5;

[0047] The control MCU 51 adjusts the fan speed in the fan control module 53 by adjusting the PWM duty cycle sent to the field effect transistor according to the temperature change detected by the temperature detection module 52;

[0048] When the internal temperature of the production control box exceeds the set value, the control MCU 51 controls the power switch module 54 to cut off the power input socket CN2 and the power output socket CN3, thereby shutting down the power supply 55 of the whole machine.

[0049] The novel production control box heat dissipation control circuit provided by the embodiment of the present invention is designed with a circuit including a control MCU 51, a temperature detection module 52, a fan control module 53, and a power switch module 54. The control MCU 51 can adjust the fan speed in the fan control module 53 according to the temperature change detected by the temperature detection module 52. Moreover, when the internal temperature of the production control box exceeds the set value, the control MCU 51 controls the power switch module 54 to shut down the power supply 55 of the whole machine. Thus, the purpose of adaptively adjusting the wind speed of the heat dissipation fan according to the temperature inside the production control box and shutting down the power supply when the temperature inside the production control box is too high is achieved, and the problem that the operation of integrated circuits in a production control box with too high internal temperature affects the service life and performance is solved.

[0050] The embodiment of the present invention also provides a novel production control box, as Figure 7 、 Figure 8 、 Figure 10 and Figure 11 shown, which includes a production control box body 10. A cavity is provided inside the production control box body 10 for placing a circuit board 50 and a control panel. The outer wall of the production control box body 10 at the cavity position is provided with a first heat dissipation hole 11 and a second heat dissipation hole 12. The first heat dissipation hole 11 and the second heat dissipation hole 12 are arranged opposite to each other to improve the heat dissipation effect.

[0051] A heat sink 20, a wind guide plate 30, and a fan 40 are arranged between the first heat dissipation hole 11 and the second heat dissipation hole 12.

[0052] The heat sink 20 is used to be in contact with heat sources (such as the control MCU, etc.) on the circuit board 50.

[0053] As Figure 11 shown, the heat sink 20 and the wind guide plate 30 form a wind guide channel. As Figure 8 shown, one end of the wind guide channel faces the first heat dissipation hole 11, and the other end faces the second heat dissipation hole 12. The fan 40 is arranged at one end of the wind guide channel. The air blowing direction of the fan 40 is set along the length direction of the wind guide channel.

[0054] During heat dissipation work, the wind guide channel is arranged between the relatively arranged first heat dissipation hole 11 and the second heat dissipation hole 12, with good convection effect and good heat dissipation effect.

[0055] When the heat sink 20 conducts the heat of the heat source, through the combined action of the wind force of the fan 40 and the air guide channel, the heat is discharged from the adjacent first heat dissipation hole 11 or the second heat dissipation hole 12 under the guidance of the air guide channel and the action of the fan 40, so as to discharge the hot air to the outside of the video switcher box body 10, thus solving the problem that the hot air is easy to accumulate inside the existing video switcher box heat dissipation structure.

[0056] When the heat sink 20 and the air guide plate 30 are configured, one or more fans 40 can be provided to improve heat dissipation.

[0057] The novel video switcher box provided by the embodiment of the present utility model achieves a good heat dissipation effect through the design of the video switcher box body 10, the first heat dissipation hole 11, the second heat dissipation hole 12, the heat sink 20, the air guide plate 30, the fan 40, the air guide channel and their positional structures, and can effectively solve the problem that the hot air is easy to accumulate inside the video switcher box.

[0058] During specific implementation, as Figure 11 shown, a plurality of fins 21 are provided along the length direction inside the air guide channel; the fins 21 are connected to the heat sink 20; the surface area of the heat sink 20 is increased through the fins 21, and the heat dissipation efficiency can be effectively improved.

[0059] As Figure 11 shown, convex edges 31 are provided on both sides of the air guide plate 30; threaded pillars 60 are provided around the heat sink 20; the height of the fins 21 on both sides of the heat sink 20 is lower than that of the fins 21 at other positions; when the bolt 61 passes through the convex edge 31 and is threadedly connected to the threaded pillar 60, the convex edge 31 presses against the fins 21 on both sides of the heat sink 20, thereby fixing the heat sink 20 on the heat source. The fixing structure in this embodiment can reduce the escape of hot air from the side to the inner wall of the video switcher box body 10.

[0060] Although the flat panel drive module 70 does not emit a large amount of heat like the heat source, it still needs to be provided with an additional fan for heat dissipation. In this embodiment, as Figure 11 shown, the flat panel drive module 70 is arranged on the air guide plate 30, and heat dissipation is carried out under the convection action of the first heat dissipation hole 11 and the second heat dissipation hole 12 or by aligning the air outlet of the fan 40 with the flat panel drive module 70 and the air guide channel at the same time, so as to reduce the number of fans 40 and solve the production cost.

[0061] As Figure 11 shown, one side of the upper wall of the air guide plate 30 bulges upward to form a convex portion 32, so as to form an air guide groove structure at the upper end of the air guide plate 30, and this air guide groove structure can improve the heat dissipation effect of the flat panel drive module 70.

[0062] The flat plate driving module 70 is located at both ends or one end of the threaded strut 60 and is movably connected to the surface of the air deflector 30 through structures such as a rotating shaft. Through the combination of the flat plate driving module 70 and the air guiding groove structure, during use, when air passes through the flat plate driving module 70, the flat plate driving module 70 can be fluctuated or swung, making the heat dissipation effect better.

[0063] As Figure 9 shown, a mounting plate 80 is provided on the side wall of the main body 10 of the camera box outside the second heat dissipation hole 12; the mounting plate 80 is provided with a plurality of elongated through holes 81 and third heat dissipation holes 82. Through the elongated through holes 81 on the mounting plate 80, bolt connection with other external devices, brackets, etc. can be achieved; moreover, through the third heat dissipation holes 82, the heat dissipation performance of the second heat dissipation hole 12 can be ensured.

[0064] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of heat dissipation control circuit for a director box, characterized in that: It comprises a control MCU (51), a temperature detection module (52), a fan control module (53) and a power switch module (54); wherein: The control MCU (51) is connected to the temperature detection module (52), the fan control module (53) and the power switch module (54) respectively; the power switch module (54) is connected to the whole machine power supply (55); The control MCU (51) adjusts the fan speed in the fan control module (53) according to the temperature change detected by the temperature detection module (52); When the temperature inside the director box exceeds a set value, the control MCU (51) controls the power switch module (54) to turn off the power supply (55) of the entire machine.

2. According to the new director box heat dissipation control circuit of claim 1, it is characterized by: The power switch module (54) comprises a power input socket CN2, a power output socket CN3, a field effect transistor U59 and a transistor Q5; The power input socket CN2 is used to connect the input power; The power output socket CN3 is used to power the director box; The power input socket CN2 is connected to the power output socket CN3 via a field effect transistor U59; the control MCU (51) is connected to the field effect transistor U59 via a transistor Q5.

3. The new director box heat dissipation control circuit according to claim 1 is characterized in that: The control MCU (51) is provided with a storage module (56).

4. The new director box heat dissipation control circuit according to claim 1 is characterized in that: The control MCU (51) is provided with a reserved interface.

5. The new director box heat dissipation control circuit according to claim 1 is characterized in that: The fan control module (53) is provided with a field effect tube; the control MCU (51) is connected to the fan via the field effect tube; the control MCU (51) controls the fan by adjusting the PWM duty cycle sent to the field effect tube.

6. A new type of director box, characterized by: A new director box heat dissipation control circuit as described in any one of claims 1 to 5 is adopted.

7. The new broadcast director box according to claim 6 is characterized in that: The novel director box comprises a director box body (10); the outer wall of the director box body (10) is provided with a first heat dissipation hole (11) and a second heat dissipation hole (12); the first heat dissipation hole (11) and the second heat dissipation hole (12) are arranged opposite to each other; A heat sink (20), an air guide plate (30) and a fan (40) are provided between the first heat dissipation hole (11) and the second heat dissipation hole (12); The heat sink (20) is used to contact a heat source; The heat sink (20) and the air guide plate (30) form an air guide channel; one end of the air guide channel faces the first heat dissipation hole (11), and the other end faces the second heat dissipation hole (12); the fan (40) is arranged at one end of the air guide channel; and the fanning direction of the fan (40) is arranged along the length direction of the air guide channel.

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