LED display device and electronic equipment

Abstract

The utility model discloses an LED display device and electronic equipment, relates to LED display technical field, the LED display device includes: an LED module including a housing and an LED assembly, the housing has a first side and a second side opposite to each other, the first side and the second side are respectively provided with an air port, the LED assembly extends along the first side and the second side and is arranged in the housing, and the first side and the second side are opposite to each other. The interior of the shell is divided into a first cavity and a second cavity; the heat dissipation module is arranged in the shell, the heat dissipation module comprises a power module, a temperature control circuit, a semiconductor refrigeration assembly and an air cooling assembly, and the temperature control circuit is used for outputting corresponding temperature control voltage according to the temperature of the LED assembly; the semiconductor refrigeration assembly is used for refrigerating the LED assembly according to the temperature control voltage; the air cooling assembly is used for providing airflow for the LED module according to the temperature control voltage; according to the technical scheme provided by the utility model, the heat dissipation efficiency of the LED electronic equipment can be obviously improved, and excessive noise is not generated.

Description

TECHNICAL FIELD

[0001] The utility model relates to LED display technical field, especially a kind of LED display device and electronic equipment. BACKGROUND

[0002] LED display device is widely used in multiple fields such as commercial advertisement, family entertainment, stage performance and outdoor large screen display due to its high efficiency, long life and environmental protection characteristics. However, LED will generate a lot of heat when working, which will lead to the rising of device working temperature if not effectively dissipated in time, affect the luminous efficiency and color saturation, reduce the display effect, and accelerate the aging of LED chip and packaging material, shorten the service life. Therefore, heat management becomes an important challenge for LED display device.

[0003] Although there are many heat dissipation schemes in the current market, each has its limitations. The heat dissipation effect of traditional fan heat dissipation scheme gradually cannot keep up with the increasingly high heat dissipation requirement. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a kind of LED display device and electronic equipment, to solve the problem that the heat dissipation effect of existing LED heat dissipation scheme gradually cannot keep up with the increasingly high heat dissipation requirement.

[0005] To achieve the above purpose, the LED display device provided by the utility model comprises:

[0006] LED module, comprising shell and LED assembly, the shell has opposite first side and second side, the first side and the second side are respectively provided with air port, the LED assembly is arranged in the shell along the direction of the first side and the second side, and the shell is divided into first cavity and second cavity, the first cavity is communicated with the air port of the first side and the second side, the second cavity is communicated with the air port of the first side and the second side, the light emitting side of the LED assembly is located in the second cavity, and the shell has light transmission area opposite the light emitting side of the LED assembly; and

[0007] Heat dissipation module, arranged in the shell, the heat dissipation module comprises power module, temperature control circuit, semiconductor refrigeration assembly and air cooling assembly, the power end of the temperature control circuit is connected with the output end of the power module, the temperature control circuit is used for detecting the temperature of the LED assembly, and corresponding temperature control voltage is output according to the temperature of the LED assembly;

[0008] The semiconductor refrigeration assembly has a cold end and a hot end, the cold end of the semiconductor refrigeration assembly is attached to the LED assembly, the hot end of the semiconductor refrigeration assembly is exposed to the second cavity, and the input end of the semiconductor refrigeration assembly is connected to the output end of the temperature control circuit for working according to the temperature control voltage to refrigerate the LED assembly.

[0009] The air cooling assembly is arranged on the first side of the shell, and the input end of the air cooling assembly is connected to the output end of the temperature control circuit for working according to the temperature control voltage to provide air flow to the first cavity and the second cavity.

[0010] In an embodiment, the temperature control circuit comprises a first thermistor, a first voltage dividing resistor, and a first capacitor, the first end of the first thermistor is the power supply end of the temperature control circuit, the second end of the first thermistor, the first end of the first voltage dividing resistor, and the first end of the first capacitor are interconnected, the second end of the first voltage dividing resistor and the second end of the first capacitor are connected, and the second end of the first voltage dividing resistor is the output end of the temperature control circuit.

[0011] In an embodiment, the semiconductor refrigeration assembly comprises:

[0012] an indication circuit, the input end of the indication circuit being connected to the output end of the temperature control circuit;

[0013] a semiconductor refrigeration circuit, the input end of the semiconductor refrigeration circuit being connected to the output end of the temperature control circuit; wherein,

[0014] the semiconductor refrigeration circuit is used for working according to the temperature control voltage to refrigerate the LED assembly, and the indication circuit is used for lighting to indicate the working state of the semiconductor refrigeration circuit when the semiconductor refrigeration circuit works.

[0015] In an embodiment, the indication circuit comprises a second voltage dividing resistor and a first light emitting diode, and the semiconductor refrigeration circuit comprises a semiconductor refrigeration sheet; the first end of the semiconductor refrigeration sheet is the input end of the semiconductor refrigeration circuit, the first end of the second voltage dividing resistor is the input end of the indication circuit, the first end of the semiconductor refrigeration sheet is connected to the first end of the second voltage dividing resistor, the second end of the second voltage dividing resistor is connected to the anode of the first light emitting diode, and the cathode of the first light emitting diode is connected to the second end of the semiconductor refrigeration sheet and grounded.

[0016] In an embodiment, the air cooling assembly comprises:

[0017] An overcurrent protection circuit, an input end of the overcurrent protection circuit is an input end of the air cooling component, and the overcurrent protection circuit is configured to disconnect the air cooling component from the temperature control circuit when the air cooling component overflows;

[0018] An anti-inrush circuit, an input end of the anti-inrush circuit is connected with an output end of the overcurrent protection circuit, and the anti-inrush circuit is configured to inhibit an inrush voltage generated when the fan circuit works;

[0019] A fan circuit, an input end of the fan circuit is connected with an output end of the anti-inrush circuit, and the fan circuit is configured to work according to the temperature control voltage to provide air flow to the first cavity and the second cavity.

[0020] In an embodiment, the overcurrent protection circuit includes a first fuse, the anti-inrush circuit includes a first diode and a second diode, and the fan circuit includes a first fan; a first end of the first fuse is an input end of the air cooling component, a second end of the first fuse, a first end of the first diode and a first end of the second diode are interconnected, a second end of the first diode, a second end of the second diode and an input end of the first fan are interconnected, and a ground end of the first fan is grounded.

[0021] In an embodiment, the power supply module includes:

[0022] A voltage stabilizing circuit, an input end of the voltage stabilizing circuit is an input end of the power supply module, an output end of the voltage stabilizing circuit is an output end of the power supply module, and the voltage stabilizing circuit is configured to process a power supply voltage received by the input end of the voltage stabilizing circuit to obtain a stable output voltage and output the stable output voltage through the output end of the voltage stabilizing circuit;

[0023] A filter circuit, a first end of the filter circuit is connected with the input end of the voltage stabilizing circuit, a second end of the filter circuit is connected with the output end of the voltage stabilizing circuit, a ground end of the filter circuit is connected with a ground end of the voltage stabilizing circuit and grounded, the ground end of the filter circuit is a ground end of the power supply module, and the filter circuit is configured to inhibit power supply noise input into the input end of the voltage stabilizing circuit.

[0024] In an embodiment, the voltage stabilizing circuit includes a voltage stabilizer, and the filter circuit includes a second capacitor, a third capacitor, a fourth capacitor and a fifth capacitor; an input end of the voltage stabilizer is an input end of the voltage stabilizing circuit, the input end of the voltage stabilizer, a first end of the second capacitor and a first end of the third capacitor are interconnected, a ground end of the voltage stabilizer is interconnected with a second end of the second capacitor, a second end of the third capacitor, a first end of the fourth capacitor and a first end of the fifth capacitor and grounded, and an output end of the voltage stabilizer is interconnected with a second end of the fourth capacitor and a second end of the fifth capacitor.

[0025] The utility model also provides a LED electronic equipment, the LED electronic equipment includes the LED display device as the above.

[0026] The LED display device of the utility model realizes the effective control to the temperature of LED device through the integrated power module, temperature control circuit, semiconductor refrigeration assembly and air cooling assembly, specifically speaking, the power module ensures the stability of power supply voltage, provides reliable power supply basis for subsequent temperature control, refrigeration operation, the temperature control circuit can detect the temperature of LED device in real time, and according to the temperature condition, the corresponding temperature control voltage is exported, the semiconductor refrigeration assembly carries out effective refrigeration adjustment to LED device according to temperature control voltage, and the LED device is radiated with high efficiency, simultaneously, the air cooling assembly can increase the air flux of first cavity and second cavity, not only can assist the refrigeration of semiconductor refrigeration piece in first cavity, but also can cool the part of LED assembly in second cavity, compared with only using air cooling radiating scheme in prior art, the radiating effect of LED module is greatly improved, the utility model significantly improves the radiating efficiency of LED device, and meets the increasing radiating demand of LED device. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description, and obviously, the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structure shown in these drawings without creating labor.

[0028] Figure 1 The LED module structure schematic view of the first embodiment of the LED display device provided by the utility model is shown in the figure.

[0029] Figure 2 The radiating module structure schematic view of the first embodiment of the LED display device provided by the utility model is shown in the figure.

[0030] Figure 3 The circuit structure schematic view of the temperature control circuit of the first embodiment of the LED display device provided by the utility model is shown in the figure.

[0031] Figure 4 The radiating module structure schematic view of the second embodiment of the LED display device provided by the utility model is shown in the figure.

[0032] Figure 5 The circuit structure schematic view of the semiconductor refrigeration assembly of the second embodiment of the LED display device provided by the utility model is shown in the figure.

[0033] Figure 6 A module structure diagram of the air cooling assembly of the third embodiment of the LED display device provided by the utility model is shown in the figure.

[0034] Figure 7 A circuit structure diagram of the air cooling assembly of the third embodiment of the LED display device provided by the utility model is shown in the figure.

[0035] Figure 8 A heat dissipation module structure diagram of the fourth embodiment of the LED display device provided by the utility model is shown in the figure.

[0036] Figure 9 A circuit structure diagram of the power module of the fourth embodiment of the LED display device provided by the utility model is shown in the figure.

[0037] Explanation of reference numerals:

[0038] 10, LED module; 11, shell; 12, LED assembly; 20, heat dissipation module; 21, power module; 211, voltage stabilizing circuit; 212, filter circuit; C2, second capacitor; C3, third capacitor; C4, fourth capacitor; C5, fifth capacitor; 22, temperature control circuit; RT, thermistor; R1, first voltage dividing resistor;

[0039] C1, first capacitor; 23, semiconductor refrigeration assembly; 231, indication circuit; R2, second voltage dividing resistor;

[0040] D1, first light emitting diode; 232, semiconductor refrigeration circuit; 24, air cooling assembly; 241, overcurrent protection circuit; F1, first fuse; 242, anti-backflow circuit; D2, first diode; D3, second diode; 243, fan circuit.

[0041] The implementation, functional features and advantages of the utility model will be further described in combination with embodiments and with reference to the drawings. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0043] It should be noted that if the embodiment of the utility model has directionality indication (such as up, down, left, right, front, back, etc.), the directionality indication is only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, if the certain posture changes, the directionality indication also changes accordingly.

[0044] In addition, if the embodiment of the utility model has the description of "first", "second" and the like, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first" and "second" can be explicitly or implicitly included at least one feature. In addition, "and / or" or "and / or" appears throughout the text, which means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary technical personnel in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the protection scope required by the utility model.

[0045] LED display device has been widely used in many fields such as commercial advertising, home entertainment, stage performance and outdoor large screen display due to its high efficiency, long life and environmental protection characteristics. However, a large amount of heat will be generated when LED works, if not effectively dissipated in time, it will lead to the rise of device working temperature, affect the luminous efficiency and color saturation, reduce the display effect, and accelerate the aging of LED chip and packaging material, shorten the service life. Therefore, heat management has become an important challenge for LED display device.

[0046] Although there are many heat dissipation schemes in the current market, each has its limitations. The heat dissipation effect of the traditional fan heat dissipation scheme gradually cannot keep up with the increasingly high heat dissipation requirement, and will bring noise pollution, and the service life and reliability problem of the fan limits its long-term use stability.

[0047] In summary, how to find a heat dissipation solution with higher heat dissipation efficiency and less noise pollution is a problem to be solved at present.

[0048] Based on this, the utility model provides a kind of LED display device.

[0049] Please refer to Figure 1 And Figure 2 In the first embodiment of the utility model, the LED display device comprises:

[0050] The LED module 10 comprises a housing 11 and an LED assembly 12, the housing 11 has opposite first and second sides, the first and second sides are respectively provided with air inlets, the LED assembly 12 is arranged in the housing 11 along the direction of the first and second sides, and separates the housing 11 into first and second cavities, the first cavities are in communication with the air inlets of the first and second sides, the second cavities are in communication with the air inlets of the first and second sides, the light-emitting side of the LED assembly 12 is located in the second cavity, and the housing 11 has a light-transmitting area opposite to the light-emitting side of the LED assembly 12; and

[0051] The heat dissipation module 20 is arranged in the housing 11, the heat dissipation module 20 comprises a power module 21, a temperature control circuit 22, a semiconductor refrigeration assembly 23 and an air cooling assembly 24, the power supply end of the temperature control circuit 22 is connected with the output end of the power module 21, the temperature control circuit 22 is used for detecting the temperature of the LED assembly 12, and outputs corresponding temperature control voltage according to the temperature of the LED assembly 12;

[0052] The semiconductor refrigeration assembly 23 has a cold end and a hot end, the cold end of the semiconductor refrigeration assembly 23 is attached to the LED assembly 12, the hot end of the semiconductor refrigeration assembly 23 is exposed to the second cavity, and the input end of the semiconductor refrigeration assembly 23 is connected with the output end of the temperature control circuit 22, so as to work according to the temperature control voltage to refrigerate the LED assembly 12;

[0053] The air cooling assembly 24 is arranged on the first side of the housing 11, the input end of the air cooling assembly 24 is connected with the output end of the temperature control circuit 22, so as to work according to the temperature control voltage to provide air flow to the first and second cavities.

[0054] It should be noted that the power module 21 can be a combination of a voltage stabilizer and a capacitor, which can stabilize the input voltage in the working voltage range of the temperature control circuit 22.

[0055] The temperature control circuit 22 can be a combination of a thermistor, a voltage dividing resistor and a capacitor, the thermistor senses the temperature of the LED electronic device, the higher the temperature of the LED electronic device, the lower the resistance value of the thermistor, and the higher the temperature control voltage output by the temperature control circuit 22, so that the LED electronic device can obtain higher power of the semiconductor refrigeration assembly 23 and the air cooling assembly 24 when the temperature is higher.

[0056] The semiconductor refrigeration assembly 23 can be an electric circuit including semiconductor refrigeration pieces arranged in the LED electronic device, and when powered by a temperature control voltage, the LED electronic device is cooled and radiated by the thermoelectric effect of the semiconductor refrigeration pieces. Compared with the prior art, which only uses a fan or a combination of a fan and a heat pipe to cool the LED electronic device, the semiconductor refrigeration assembly 23 has the advantages of no mechanical moving parts, no noise, compact structure, and accurate temperature control.

[0057] The air cooling assembly 24 can be a combination of a protection circuit and a low-power fan, which assists in cooling the LED electronic device on the basis of the semiconductor refrigeration assembly 23. Since the semiconductor refrigeration assembly 23 is the main cooling method, the fan of the air cooling assembly 24 does not need to work at high speed, so as not to produce too much noise pollution, and has a good silent effect, and improves the heat dissipation efficiency of the LED display device.

[0058] The LED display device of the utility model realizes effective control of the temperature of the LED device by integrating the power module 21, the temperature control circuit 22, the semiconductor refrigeration assembly 23 and the air cooling assembly 24. Specifically, the power module 21 ensures the stability of the power supply voltage, providing a reliable power supply basis for subsequent temperature control and refrigeration operations. The temperature control circuit 22 can detect the temperature of the LED device in real time and output the corresponding temperature control voltage according to the temperature. The semiconductor refrigeration assembly 23 effectively cools and adjusts the LED device according to the temperature control voltage, efficiently radiates the LED device, and at the same time, the air cooling assembly 24 can increase the air flux of the first cavity and the second cavity, which not only assists the refrigeration of the semiconductor refrigeration assembly in the first cavity, but also cools part of the LED assembly 12 in the second cavity. Compared with the prior art, which only uses air cooling to dissipate heat, the heat dissipation effect of the LED module 10 is greatly improved, and in an embodiment of the utility model, a smaller power fan can be used, so that the utility model can enhance the heat dissipation effect without producing too much noise. Compared with the prior art, which mainly uses air cooling to dissipate heat and requires a higher fan speed, the utility model significantly improves the heat dissipation efficiency of the LED device, fully meets the heat dissipation needs of the LED device, and has a good silent effect.

[0059] Please refer to Figure 3In an embodiment of the first embodiment of the utility model, the temperature control circuit 22 includes: first thermistor RT, first voltage dividing resistor R1, first capacitor, the first end of first thermistor RT is the power end of temperature control circuit 22, the second end of first thermistor RT, the first end of first voltage dividing resistor R1 and the first end of first capacitor are interconnected, the second end of first voltage dividing resistor R1 is connected with the second end of first capacitor, and the second end of first voltage dividing resistor R1 is the output end of temperature control circuit 22.

[0060] It should be noted that the first thermistor RT can be a thermistor whose resistance decreases with temperature rise, and the resistance change of the thermistor with temperature can be linear or nonlinear, which is not limited in the embodiment.

[0061] In the embodiment, the output voltage processed by the power module 21 becomes temperature control voltage through the regulation of the temperature control circuit 22 to supply power to the air-cooled assembly 24 and the semiconductor refrigeration assembly 23. The first thermistor RT in the temperature control circuit 22 is close to the LED electronic device, and the resistance decreases with the temperature rise of the LED electronic device to work, so that the temperature control voltage output by the temperature control circuit 22 increases, and the air-cooled assembly 24 and the semiconductor refrigeration assembly 23 work together to cool and dissipate heat for the LED electronic device. The higher the temperature of the LED electronic device, the higher the temperature control voltage, and the higher the cooling efficiency of the air-cooled assembly 24 and the semiconductor refrigeration assembly 23. Therefore, the LED display device of the embodiment can automatically adjust the cooling power according to the temperature of the LED electronic device, and adaptively cool, thereby reducing the cooling energy consumption and improving the cooling efficiency.

[0062] Please refer to Figure 4 In the second embodiment of the utility model, the semiconductor refrigeration assembly 23 includes:

[0063] The indication circuit 231 is connected with the output end of the temperature control circuit 22;

[0064] The semiconductor refrigeration circuit 232 is connected with the output end of the temperature control circuit 22; wherein,

[0065] The semiconductor refrigeration circuit 232 is used for working according to the temperature control voltage to cool the LED assembly 12, and the indication circuit 231 is used for lighting to indicate the working state of the semiconductor refrigeration circuit 232 when the semiconductor refrigeration circuit 232 works.

[0066] It should be noted that the semiconductor refrigeration circuit 232 can be a semiconductor refrigeration piece, and the accurate temperature control refrigeration heat dissipation of the LED electronic device can be realized through the thermoelectric effect of the semiconductor refrigeration piece; the indicating circuit 231 can be a combination of a resistor and a light emitting diode, and the working state of the semiconductor refrigeration assembly 23 can be indicated through the lighting of the light emitting diode when the semiconductor refrigeration circuit 232 works.

[0067] Please refer to Figure 5 In an embodiment of the second embodiment of the utility model, the indicating circuit 231 comprises a second voltage dividing resistor R2 and a first light emitting diode D1, and the semiconductor refrigeration circuit 232 comprises a semiconductor refrigeration piece; the first end of the semiconductor refrigeration piece is the input end of the semiconductor refrigeration circuit 232, the first end of the second voltage dividing resistor R2 is the input end of the indicating circuit 231, the first end of the semiconductor refrigeration piece is connected with the first end of the second voltage dividing resistor R2, the second end of the second voltage dividing resistor R2 is connected with the anode of the first light emitting diode D1, and the cathode of the first light emitting diode D1 is connected with the second end of the semiconductor refrigeration piece and grounded.

[0068] It should be noted that the element parameters of the second voltage dividing resistor R2 and the first light emitting diode D1 need to be determined according to the specific circuit design, and this embodiment does not make specific limitation.

[0069] In this embodiment, the semiconductor refrigeration piece is used to realize the heat dissipation of the LED electronic device, and compared with the scheme of only using a fan or a combination of a fan and a heat pipe for heat dissipation of the LED electronic device in the prior art, the scheme has the advantages of no mechanical moving parts, low noise, compact structure and accurate temperature control.

[0070] Please refer to Figure 6 In the third embodiment of the utility model, the air cooling assembly 24 comprises:

[0071] The overcurrent protection circuit 241 is connected with the input end of the air cooling assembly 24, and is used to disconnect the air cooling assembly 24 and the temperature control circuit 22 when the air cooling assembly 24 overflows;

[0072] The anti-backflow circuit 242 is connected with the output end of the overcurrent protection circuit 241, and is used to suppress the backflow voltage generated when the fan circuit 243 works;

[0073] The fan circuit 243 is connected with the output end of the anti-backflow circuit 242, and is used to work according to the temperature control voltage to provide air flow for the first cavity and the second cavity.

[0074] It should be noted that the overcurrent protection circuit 241 can be a fuse or a combination of capacitors, resistors and transistors, or other components or circuits having overcurrent protection function, which are not specifically limited in the embodiment.

[0075] The anti-inversion circuit 242 can be a combination of one or more diodes that prevent current from flowing in the circuit, which is not specifically limited in the embodiment.

[0076] The fan circuit 243 can select a lower power fan device to ensure a certain air flow flux without generating excessive noise pollution.

[0077] Please refer to Figure 7 In an embodiment of the third embodiment of the utility model, the overcurrent protection circuit 241 includes a first fuse F1, the anti-inversion circuit 242 includes a first diode D2 and a second diode D3, and the fan circuit 243 includes a first fan; the first end of the first fuse F1 is the input end of the air cooling assembly 24, the second end of the first fuse F1, the first end of the first diode D2 and the first end of the second diode D3 are interconnected, the second end of the first diode D2, the second end of the second diode D3 and the input end of the first fan are interconnected, and the grounding end of the first fan is grounded.

[0078] It should be noted that the first fuse F1 can be a common fuse, a recoverable fuse, an electronic fuse, etc., as long as it meets the requirements of circuit design, which is not specifically limited in the embodiment. The element parameters of the first fan, the first diode D2 and the second diode D3 need to be determined according to the specific circuit design, which is not specifically limited in the embodiment.

[0079] In the embodiment, the design of the air cooling assembly 24 combines overcurrent protection and anti-inversion functions, ensuring that the fan circuit 243 works in a safe condition. The overcurrent protection is provided by the first fuse F1, the anti-inversion protection is provided by the parallel connection of the first and second diodes D3, and finally the first fan is used to achieve better heat dissipation effect of the auxiliary semiconductor refrigeration circuit 232, which can effectively prolong the service life of the LED electronic device and improve the reliability of the system, and can not generate excessive noise pollution.

[0080] Please refer to Figure 8 In the fourth embodiment of the utility model, the power module 21 includes:

[0081] A voltage stabilizing circuit 211, an input end of the voltage stabilizing circuit 211 being an input end of the power module 21, an output end of the voltage stabilizing circuit 211 being an output end of the power module 21, the voltage stabilizing circuit 211 being used for processing a power supply voltage received by the input end of the voltage stabilizing circuit 211 to obtain a stable output voltage and output the stable output voltage through the output end of the voltage stabilizing circuit 211;

[0082] A filter circuit 212, a first end of the filter circuit 212 being connected with the input end of the voltage stabilizing circuit 211, a second end of the filter circuit 212 being connected with the output end of the voltage stabilizing circuit 211, a grounding end of the filter circuit 212 being connected with the grounding end of the voltage stabilizing circuit 211 and grounded, the grounding end of the filter circuit 212 being a grounding end of the power module 21, the filter circuit 212 being used for suppressing power supply noise accessed by the input end of the voltage stabilizing circuit 211.

[0083] It should be noted that the voltage stabilizing circuit 211 can be composed of a voltage stabilizer, and the function of the voltage stabilizer is to process an input voltage to generate a stable output voltage, and the main function of the filter circuit 212 is to suppress power supply noise accessed by the input end of the voltage stabilizing circuit 211. The power supply noise can come from an external power supply or other elements inside the circuit. Through filtering, the influence of these power supply noises on the working performance of the circuit can be reduced, and a better heat dissipation effect can be achieved.

[0084] Please refer to Figure 9 In an embodiment of the fourth embodiment of the utility model, the voltage stabilizing circuit 211 includes a voltage stabilizer, and the filter circuit 212 includes a second capacitor C2, a third capacitor C3, a fourth capacitor C4 and a fifth capacitor C5; an input end of the voltage stabilizer is an input end of the voltage stabilizing circuit 211, the input end of the voltage stabilizer, a first end of the second capacitor C2 and a first end of the third capacitor C3 are interconnected, a grounding end of the voltage stabilizer is interconnected with a second end of the second capacitor C2, a second end of the third capacitor C3, a first end of the fourth capacitor C4 and a first end of the fifth capacitor C5 and grounded, and an output end of the voltage stabilizer is interconnected with a second end of the fourth capacitor C4 and a second end of the fifth capacitor C5.

[0085] It should be noted that the second capacitor C2, the third capacitor C3, the fourth capacitor C4 and the fifth capacitor C5 are filter capacitors, and appropriate specifications of capacitors can be selected according to circuit design, and the embodiment does not make specific limitations. The voltage stabilizer can be a switching voltage stabilizer, a linear voltage stabilizer or a switching voltage stabilizer, as long as it can achieve the functional requirements of circuit design, and the embodiment does not make specific limitations. The noise in the input voltage is mainly the noise of the line to ground. By setting the paths of the second capacitor C2 and the fourth capacitor C4, the paths of the third capacitor C3 and the fifth capacitor C5 between the input and output ends of the voltage stabilizer, and connecting them with the voltage stabilizer and grounding, the interference noise is guided to the ground, thereby effectively reducing the interference of noise on the subsequent semiconductor refrigeration assembly 23, air cooling assembly 24 and voltage stabilizer.

[0086] In the embodiment, the power module 21 realizes stable processing and noise suppression of the input voltage through the combination of the voltage stabilizing circuit 211 and the filtering circuit 212, selects appropriate voltage stabilizers and filter capacitors, and designs the filtering path according to the actual situation, thereby further improving the performance and stability of the power module 21. This design is particularly important for circuit systems that require stable power supply and good heat dissipation effect.

[0087] The utility model also proposes a kind of LED electronic equipment, and the LED electronic equipment includes the LED display device as described in any one of each embodiment above. The specific structure of the LED display device refers to the above embodiment, since the present LED electronic equipment adopts all technical solutions of the above all embodiments, at least has all beneficial effects brought by the technical solutions of the above embodiments, and here is not repeated.

[0088] The above is only the exemplary embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by using the utility model specification and drawing contents, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.

Claims

1. An LED display device, characterized by, The application relates to an LED module and a heat dissipation module. The LED module comprises a shell and an LED assembly, the shell has opposite first and second sides, air inlets are arranged on the first and second sides respectively, the LED assembly is arranged in the shell along the direction of the first and second sides, and the LED assembly divides the shell into first and second cavities, the first cavities are communicated with the air inlets of the first and second sides respectively, the second cavities are communicated with the air inlets of the first and second sides respectively, the light-emitting side of the LED assembly is located in the second cavity, and the shell has a light-transmitting area which is opposite to the light-emitting side of the LED assembly. The heat dissipation module is arranged in the shell, and the heat dissipation module comprises a power module, a temperature control circuit, a semiconductor refrigeration assembly and an air cooling assembly. The power end of the temperature control circuit is connected with the output end of the power module, the temperature control circuit is used for detecting the temperature of the LED assembly and outputting corresponding temperature control voltage according to the temperature of the LED assembly. The cold end of the semiconductor refrigeration assembly is attached to the LED assembly, the hot end of the semiconductor refrigeration assembly is exposed to the second cavity, the input end of the semiconductor refrigeration assembly is connected with the output end of the temperature control circuit, and the semiconductor refrigeration assembly is used for working according to the temperature control voltage to refrigerate the LED assembly. The input end of the air cooling assembly is connected with the output end of the temperature control circuit, and the air cooling assembly is used for working according to the temperature control voltage to provide air flow for the first and second cavities.

2. The LED display apparatus of claim 1, wherein, The temperature control circuit comprises a first thermistor, a first voltage dividing resistor and a first capacitor, the first end of the first thermistor is the power end of the temperature control circuit, the second end of the first thermistor, the first end of the first voltage dividing resistor and the first end of the first capacitor are interconnected, the second end of the first voltage dividing resistor is connected with the second end of the first capacitor, and the second end of the first voltage dividing resistor is the output end of the temperature control circuit.

3. The LED display apparatus of claim 1, wherein, The semiconductor refrigeration assembly comprises an indication circuit and a semiconductor refrigeration circuit. The input end of the indication circuit is connected with the output end of the temperature control circuit, and the input end of the semiconductor refrigeration circuit is connected with the output end of the temperature control circuit. The semiconductor refrigeration circuit is used for working according to the temperature control voltage to refrigerate the LED assembly, and the indication circuit is used for lighting to indicate the working state of the semiconductor refrigeration circuit when the semiconductor refrigeration circuit works. The indication circuit comprises a second voltage dividing resistor and a first light-emitting diode, the semiconductor refrigeration circuit comprises a semiconductor refrigeration piece, the first end of the semiconductor refrigeration piece is the input end of the semiconductor refrigeration circuit, the first end of the second voltage dividing resistor is the input end of the indication circuit, the first end of the semiconductor refrigeration piece is connected with the first end of the second voltage dividing resistor, the second end of the second voltage dividing resistor is connected with the anode of the first light-emitting diode, and the cathode of the first light-emitting diode is connected with the second end of the semiconductor refrigeration piece and grounded.

4. The LED display apparatus of claim 3, wherein, The air cooling assembly comprises 5. The LED display apparatus of claim 1, wherein, ​ The over-current protection circuit has an input end connected to an input end of the air-cooling component, and is configured to disconnect the air-cooling component from the temperature control circuit when the air-cooling component overflows; The fan circuit has an input end connected to an output end of the anti-backflow circuit, and is configured to work according to the temperature control voltage to provide air flow to the first cavity and the second cavity. The anti-backflow circuit has an input end connected to an output end of the over-current protection circuit, and is configured to suppress a backflow voltage generated when the fan circuit works.

6. The LED display apparatus of claim 5, wherein, The over-current protection circuit includes a first fuse, the anti-backflow circuit includes a first diode and a second diode, and the fan circuit includes a first fan; a first end of the first fuse is the input end of the air-cooling component, a second end of the first fuse, a first end of the first diode, and a first end of the second diode are interconnected, a second end of the first diode, a second end of the second diode, and an input end of the first fan are interconnected, and a ground end of the first fan is grounded. 7.The LED display device of any of claims 1 to 6, wherein, The power module includes: The voltage stabilizing circuit has an input end connected to an input end of the power module, and an output end connected to an output end of the power module, and is configured to process a power supply voltage received by the input end of the voltage stabilizing circuit to obtain a stable output voltage and output the stable output voltage through the output end of the voltage stabilizing circuit; The filter circuit has a first end connected to the input end of the voltage stabilizing circuit, a second end connected to the output end of the voltage stabilizing circuit, and a ground end connected to and grounded with the ground end of the voltage stabilizing circuit, and is configured to suppress power supply noise input to the input end of the voltage stabilizing circuit.

8. The LED display apparatus of claim 7, wherein, The voltage stabilizing circuit includes a voltage stabilizer, and the filter circuit includes a second capacitor, a third capacitor, a fourth capacitor, and a fifth capacitor; the input end of the voltage stabilizer is the input end of the voltage stabilizing circuit, the input end of the voltage stabilizer, a first end of the second capacitor, and a first end of the third capacitor are interconnected, a ground end of the voltage stabilizer is interconnected with and grounded with a second end of the second capacitor, a second end of the third capacitor, a first end of the fourth capacitor, and a first end of the fifth capacitor, and an output end of the voltage stabilizer is interconnected with a second end of the fourth capacitor and a second end of the fifth capacitor.

9. An LED electronic device, characterized by The LED electronic device includes the LED display device according to any one of claims 1 to 8.

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