Cooling fan device

Abstract

A cooling fan device comprises a main controller and a plurality of fan units connected in series. Each fan unit comprises a first transmission interface, a second transmission interface, a feedback interface, a fan motor module, a light-emitting module and a fan driving module. The fan units are connected in series through the first transmission interfaces and the second transmission interfaces, and control signals output by the main controller are continuously transmitted through the first transmission interface, the fan driving module and the second transmission interface of each fan unit. All the fan units can be in signal connection with the main controller by connecting the main controller with the first transmission interface of the first fan unit only by using a group of connecting wires and then connecting the main controller with the feedback interfaces of all the fan units by using a connecting wire.

Description

Technical Field

[0001] The utility model relates to a fan device, in particular to a heat dissipation fan device which is applied to a personal computer and has a luminous effect. Background Art

[0002] When assembling a personal computer, the user can select a cooling fan device with a luminous effect. Figure 1 As shown, the cooling fan device is controlled by a motherboard 19 of a personal computer, and includes a main controller 11 electrically connected to the motherboard 19, and a plurality of fan units 12, each of which has a fan motor driver chip 121, a fan motor 122, and a light bar 123. Each of the fan motor driver chips 121 is electrically connected to the main controller 11 via a set of fan signal lines 13 and a fan feedback line 14, and is controlled by the main controller 11 to drive the fan motor 122. Each of the light bars 123 is electrically connected to the main controller 11 via a set of light bar signal lines 15, and is controlled by the main controller 11 to emit light.

[0003] However, since the above wiring method requires connecting each of the fan motor driver chips 121 and each of the light strips 123 to the main controller 11, the wiring is complicated, which not only increases the probability of wrong wiring during assembly, but also requires a certain amount of space to accommodate the numerous wirings, causing inconvenience in installation and space consumption. Utility Model Content

[0004] The utility model aims to provide a heat dissipation fan device which can reduce wiring and improve convenience.

[0005] The utility model discloses a heat dissipation fan device, which comprises a main controller and a plurality of fan units connected in series.

[0006] The main controller is used for outputting a control signal.

[0007] Each of the fan units includes a first transmission interface, a second transmission interface, a feedback interface electrically connected to the main controller, a fan motor module, a light-emitting module, and a fan driving module. The fan driving module is electrically connected to the first transmission interface, the second transmission interface, the feedback interface, the fan motor module, and the light-emitting module, and receives a first transmission signal through the first transmission interface, outputs a second transmission signal corresponding to the first transmission signal to the second transmission interface, outputs a feedback signal corresponding to the first transmission signal to the main controller through the feedback interface, outputs a fan signal corresponding to the first transmission signal to the fan motor module, and outputs a light-emitting signal corresponding to the first transmission signal to the light-emitting module. Among them, the first transmission interface of the first fan unit is electrically connected to the main controller to receive the control signal as the first transmission signal, and the first transmission interface of each of the remaining fan units is electrically connected to the second transmission interface of the previous fan unit and receives the second transmission signal output by the previous fan unit as the first transmission signal.

[0008] For the heat dissipation fan device of the present utility model, the second transmission interface has a second fan power port for transmitting the power supply of the fan motor module, a second light-emitting power port for transmitting the power supply of the light-emitting module, a second data port for outputting the second transmission signal, and a second ground port. The first transmission interface has a first fan power port electrically connected to the second fan power port of the main controller or the previous fan unit, a first light-emitting power port electrically connected to the second light-emitting power port of the main controller or the previous fan unit, a first data port electrically connected to the main controller to receive the control signal or electrically connected to the second data port of the previous fan unit to receive the second transmission signal, and a first ground port electrically connected to the second ground port of the main controller or the previous fan unit.

[0009] For the heat dissipation fan device of the present utility model, the main controller includes a fan power module and a light-emitting power module. The fan power module is electrically connected to the first fan power port of the first fan unit and is used to provide the power supply for the fan motor module. The light-emitting power module is electrically connected to the first light-emitting power port of the first fan unit and is used to provide the power supply for the light-emitting module.

[0010] The beneficial effects of the present utility model are as follows: By connecting the fan units in series with each other through the first transmission interface and the second transmission interface, and enabling the control signal output by the main controller to be continuously transmitted through the first transmission interface, the fan drive module, and the second transmission interface of each fan unit, it is possible to connect the main controller to the first transmission interface of the first fan unit using only one set of wiring, and then use one more wiring to connect the main controller to the feedback interfaces of all the fan units, so that all the fan units can be signal-connected to the main controller. Description of the Drawings

[0011] Figure 1 is a block diagram of an existing heat dissipation fan device;

[0012] Figure 2 is a block diagram of an embodiment of the heat dissipation fan device of the present utility model;

[0013] Figure 3 is a schematic diagram of a control packet of the embodiment; and

[0014] Figure 4 is a schematic diagram of another form of the control packet of the embodiment. Detailed Description of the Preferred Embodiments

[0015] Referring to Figure 2 , an embodiment of the heat dissipation fan device of the present utility model includes a main controller 2 and a plurality of serially connected fan units 3. Each of the fan units 3 includes a fan motor module 31, a light emitting module 32, and a fan drive module 33 (fan driver).

[0016] The main controller 2 is electrically connected to a motherboard 9 of a personal computer and outputs a control signal according to the motherboard 9 to control the operation of the fan unit 3. The main controller 2 can be implemented, for example, using an MCU with a power module function, and includes a fan power module 21 and a light emitting power module 22. The fan power module 21 is used to provide power (e.g., 12V) for the fan motor module 31, and the light emitting power module 22 is used to provide power (e.g., 5V) for the light emitting module 32.

[0017] Referring to Figure 2 , Figure 3 and Figure 4, the control signal has a control packet 4, the control packet 4 has a fan number section 41, and at least one of a motor instruction section 42 and a light emission instruction section 43, and optionally also has a transmission instruction section 44. That is to say, according to the actual control requirements, the control packet 4 can only have the motor instruction section 42, or only have the light emission instruction section 43, or have both at the same time. As Figure 3 shown, the control packet 4 can have the fan number section 41, the motor instruction section 42 and the light emission instruction section 43 at the same time, and their order is the fan number section 41, the light emission instruction section 43 and the motor instruction section 42. The control packet 4 can also be as Figure 4 shown, and also has the transmission instruction section 44 located after the fan number section 41, and swaps the order of the motor instruction section 42 and the light emission instruction section 43. In Figure 4 , the transmission instruction section 44 can be used to transmit additional information. The additional information, for example, enables the fan drive module 33 to report the rotation speed of the fan motor module 31, or whether the control packet 4 has a complete motor instruction section 42 or a light emission instruction section 43. For example, when the motherboard 9 only needs to adjust the operation of the fan motor module 31 without adjusting the operation of the light emission module 32, the control packet 4 can omit the light emission instruction section 43, and in the transmission instruction section 44, place the information that the control packet 4 does not have the light emission instruction section 43 to inform the fan unit 3. It is worth noting that since the information of the light emission instruction section 43 must include the information of RGB three colors, more transmission bits (bytes) and more transmission time are required. By setting the light emission instruction section 43 at the last section of the control packet 4 and deleting the light emission instruction section 43 when it is not necessary to transmit the light emission instruction section 43, the data transmission time can be effectively saved.

[0018] Each of the fan units 3 further includes a first transmission interface 34, a second transmission interface 35, and a feedback interface 36 electrically connected to the main controller 2. Among them, the fan motor module 31 is, for example, a module of a motor, related drive circuits, and a fan, and the light-emitting module 32 is, for example, a module of an LED strip and related drive circuits. The fan drive module 33 is, for example, a circuit or a drive chip with computing and driving capabilities. The fan drive module 33 is electrically connected to the fan motor module 31, the light-emitting module 32, the first transmission interface 34, the second transmission interface 35, and the feedback interface 36, receives a first transmission signal through the first transmission interface 34, outputs a second transmission signal corresponding to the first transmission signal to the second transmission interface 35, outputs a feedback signal corresponding to the first transmission signal to the main controller 2 through the feedback interface 36, outputs a fan signal corresponding to the first transmission signal to the fan motor module 31, and outputs a light-emitting signal corresponding to the first transmission signal to the light-emitting module 32.

[0019] Among them, the first transmission interface 34 of the first fan unit 3 is electrically connected to the main controller 2 and receives the control signal as the first transmission signal. The first transmission interface 34 of each of the remaining fan units 3 is electrically connected to the second transmission interface 35 of the previous fan unit 3 and receives the second transmission signal output by the previous fan unit 3 as the first transmission signal.

[0020] Among them, the second transmission interface 35 has a second fan power port 351 for transmitting the power supply (e.g., 12V) of the fan motor module 31, a second light-emitting power port 352 for transmitting the power supply (e.g., 5V) of the light-emitting module 32, a second data port 353 for outputting the second transmission signal, and a second ground port 354 (e.g., 0V). The first transmission interface 34 has a first fan power port 341 electrically connected to the second fan power port 351 of the main controller 2 or the previous fan unit 3, a first light-emitting power port 342 electrically connected to the second light-emitting power port 352 of the main controller 2 or the previous fan unit 3, a first data port 343 electrically connected to the main controller 2 to receive the control signal or electrically connected to the second data port 353 of the previous fan unit 3 to receive the second transmission signal, and a first ground port 344 electrically connected to the second ground port 354 of the main controller 2 or the previous fan unit 3. The first fan power port 341 is used to receive the power supply of the fan motor module 31, and the first light-emitting power port 342 is used to receive the power supply of the light-emitting module 32.

[0021] According to the actual application description, during installation, first connect the fan units 3 in series. The connection method can be to design the fan units 3 to be able to fit into each other, and use metal parts such as thimbles or elastic pieces for electrical connection. Then connect the first fan unit 3 to the main controller 2 with wires, and the hardware assembly is completed.

[0022] Regarding the software installation part, the main controller 2 can obtain the number of the serially connected fan units 3 by transmitting a counting signal, and encode the fan units 3. The counting signal has a number information. The main controller 2 transmits the counting signal to the first transmission interface 34 of the first fan unit 3. The fan drive module 33 receives the counting signal and records the number information as its own number, and after increasing the number information by one, transmits it to the next fan unit 3 through the second transmission interface 35. Each next fan unit 3 performs the same operation, records the number information as its own number, and after increasing the number information by one, transmits it to the next fan unit 3. After the last fan unit 3 records the number information as its own number, it transmits the unchanged number information back to the second transmission interface 35 of the previous fan unit 3 through the first transmission interface 34. Each previous fan unit 3 continues to transmit the unchanged number information to the fan unit 3 one level above until it is transmitted back to the main controller 2. The main controller 2 can know the number of the serially connected fan units 3 according to the received number information. Through the above transmission process of the counting signal, each fan unit 3 also records its own number at the same time.

[0023] During operation, the motherboard 9 controls the main controller 2 to transmit the control signal to control the operation of the fan unit 3. The main controller 2 can individually control the fan motor module 31 or the light emitting module 32 of each fan unit 3 to operate. As Figure 3 shown, for example, when the main controller 2 only needs to adjust the operation of the fan motor module 31 and the light emitting module 32 of the fan unit 3 numbered 3, it can output the control signal of the control packet 4 as shown in Figure 3 shown. The information in the fan number section 41 of the control packet 4 is number 3, and the motor instruction section 42 and the light emitting instruction section 43 respectively have control instructions corresponding to the fan motor module 31 and the light emitting module 32.

[0024] Assume that the number of the cascaded fan units 3 is N, numbered from 0 to N - 1. After the first fan unit 3 (numbered 0) receives the control packet 4, since the number (number 3) corresponding to the fan number section 41 does not correspond to the number of the first fan unit 3 itself (numbered 0), therefore, the fan drive module 33 will forward the control packet 4, that is, will output the second transmission signal with the control packet 4 to the second transmission interface 35 for transmission to the next fan unit 3 (the second fan unit 3, numbered 1).

[0025] The second fan unit 3 receives the second transmission signal with the control packet 4 as the first transmission signal through the first transmission interface 34, that is, the first transmission signal of the second fan unit 3 has the same control packet 4. Since the number (number 3) corresponding to the fan number section 41 does not correspond to the number of the second fan unit 3 itself (numbered 1), therefore, the fan drive module 33 will also forward the control packet 4, that is, will output the second transmission signal with the control packet 4 to the second transmission interface 35 for transmission to the next fan unit 3 (the third fan unit 3, numbered 2).

[0026] This step will continue until the number of the fan unit 3 that receives the control packet 4 is the same as the number (number 3) corresponding to the fan number section 41. When the fourth fan unit 3 (numbered 3) receives the control packet 4, since the number (number 3) corresponding to the fan number section 41 corresponds to the number of the fan unit 3 itself, at this time, the fan drive module 33 will output the fan signal corresponding to the motor instruction section 42 to the fan motor module 31, and output the light emission signal corresponding to the light emission instruction section 43 to the light emission module 32, so that the fan motor module 31 and the light emission module 32 perform corresponding rotational speed and brightness adjustments. At this time, the fan drive module 33 no longer forwards the control packet 4.

[0027] As Figure 4As shown, the control packet 4 may also have other control information. For example, the transmission instruction section 44 may also be an instruction for reporting the rotation speed of the fan motor module 31. When the fourth fan unit 3 (numbered 3) receives the control packet 4, it outputs the feedback signal through the feedback interface 36 to inform the main controller 2 of the current rotation speed of the fan motor module 31. It should be noted that through the above-described transmission method of the control packet 4, only one fan unit 3 will output the feedback signal at a time. Therefore, there will be no situation where the feedback signals of different fan units 3 conflict with each other.

[0028] Through the above description, the effects of this embodiment are as follows:

[0029] 1. By connecting the fan units 3 in series with each other through the first transmission interface 34 and the second transmission interface 35, and enabling the control signal output by the main controller 2 to be continuously transmitted through the first transmission interface 34, the fan drive module 33, and the second transmission interface 35 of each fan unit 3, it is possible to use only one set of wiring to connect the main controller 2 to the first transmission interface 34 of the first fan unit 3, and then use one wiring to connect the main controller to the feedback interfaces 36 of all the fan units 3, so that all the fan units 3 can be signal-connected to the main controller 2. Compared with the prior art that requires multiple sets of wiring, this embodiment can greatly reduce the complexity of wiring, reduce the error probability of wiring, and also reduce the space utilization rate by reducing the number of wirings.

[0030] 2. By setting the second transmission interface 35 to have the second fan power port 351, the second light-emitting power port 352, the second data port 353, and the second ground port 354, and correspondingly setting the first transmission interface 34 to have the corresponding first fan power port 341, the first light-emitting power port 342, the first data port 343, and the first ground port 344, it is possible to facilitate the corresponding connection between the second transmission interface 35 and the first transmission interface 34, thereby reducing the complexity of wiring.

[0031] 3. By providing the fan power module 21 and the light-emitting power module 22 in the main controller 2, the power required by the fan motor module 31 can be provided to the series-connected fan units 3 through the fan power module 21, and the power required by the light-emitting module 32 can be provided to the series-connected fan units 3 through the light-emitting power module 22. In this way, it is not necessary to separately provide a power module in each fan unit 3, which can reduce the circuit complexity of the fan unit 3 and further reduce the design and manufacturing costs of the fan unit 3.

[0032] In summary, the heat dissipation fan device of the present utility model can indeed achieve the purpose of the present utility model.

[0033] The above are only embodiments of the present utility model, and the scope of implementation of the present utility model cannot be limited thereby. That is, all simple equivalent changes and modifications made according to the claims and the content of the specification of the present utility model still fall within the scope of the present utility model.

Claims

1. A heat dissipation fan device, comprising a main controller and a plurality of fan units; Features: The main controller is used to output a control signal; The fan units are connected in series, and each of the fan units includes a first transmission interface, a second transmission interface, a feedback interface electrically connected to the main controller, a fan motor module, a light-emitting module and a fan driving module. The fan driving module is electrically connected to the first transmission interface, the second transmission interface, the feedback interface, the fan motor module and the light-emitting module, and receives a first transmission signal from the first transmission interface, outputs a second transmission signal corresponding to the first transmission signal to the second transmission interface, outputs a feedback signal corresponding to the first transmission signal to the main controller via the feedback interface, outputs a fan signal corresponding to the first transmission signal to the fan motor module, and outputs a light-emitting signal corresponding to the first transmission signal to the light-emitting module, wherein the first transmission interface of the first fan unit is electrically connected to the main controller to receive the control signal as the first transmission signal, and the first transmission interface of each of the remaining fan units is electrically connected to the second transmission interface of the previous fan unit to receive the second transmission signal output by the previous fan unit as the first transmission signal.

2. The heat dissipation fan device according to claim 1, characterized in that: The second transmission interface has a second fan power port for transmitting the power of the fan motor module, a second light-emitting power port for transmitting the power of the light-emitting module, a second data port for outputting the second transmission signal, and a second ground port, and the first transmission interface has a first fan power port electrically connected to the second fan power port of the main controller or the previous fan unit, a first light-emitting power port electrically connected to the main controller or the second light-emitting power port of the previous fan unit, a first data port electrically connected to the main controller to receive the control signal or electrically connected to the second data port of the previous fan unit to receive the second transmission signal, and a first ground port electrically connected to the second ground port of the main controller or the previous fan unit.

3. The heat dissipation fan device according to claim 2, characterized in that: The main controller includes a fan power supply module and a light-emitting power supply module. The fan power supply module is electrically connected to the first fan power supply port of the first fan unit and is used to provide power to the fan motor module. The light-emitting power supply module is electrically connected to the first light-emitting power supply port of the first fan unit and is used to provide power to the light-emitting module.

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