LED micro-fan circuit board structure and micro-fan thereof

Abstract

The utility model discloses a kind of LED micro fan circuit board structure and its micro fan with it, it includes circuit substrate, LED lamp and coil, the coil is arranged on the circuit substrate with several circle center symmetry, and form a coil encircling area with toroidal shape, the LED lamp is distributed in the coil encircling area.This utility model structure design is reasonable, set up LED lamp in the coil encircling area with the same distribution diameter with coil, ingeniously utilize the idle space of coil encircling area to settle LED lamp, make LED lamp and coil share same area, and not extra occupy fluid space in fan, help to improve the fluid performance of micro fan, make its heat dissipation efficiency higher, also conducive to improving noise performance, make fan run more quietly, in addition, also reduce the shielding of coil to LED light, more conducive to light emission, can present better light viewing effect.

Description

Technical Field

[0001] This utility model relates to the field of micro fan technology, specifically to a circuit board structure with LED micro fan and its micro fan. Background Technology

[0002] With the continuous development of technology and the constant updates and iterations of electronic products, electronic products have become more widely used in people's lives. During the use of electronic products, they are prone to generating heat. If this heat cannot be effectively dissipated, it can easily damage the electronic products. Therefore, miniature cooling fans have emerged. Miniature cooling fans can play a role in heat dissipation during the use of electronic products, thereby protecting the normal use of electronic products.

[0003] To enhance visual appeal, many miniature cooling fans currently incorporate light-emitting components. However, due to limited internal space, most miniature cooling fans place the LEDs inside the coil. While this achieves a light-emitting effect, the illumination is not very good, and it also occupies fluid space within the fan, impacting its performance. Utility Model Content

[0004] To address the aforementioned shortcomings, the purpose of this utility model is to provide a reasonably designed circuit board structure with an LED micro fan and its micro fan.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A circuit board structure with an LED micro fan includes a circuit board, LED lights, and coils. Several coils are symmetrically arranged on the circuit board to form a circular coil surrounding area, and the LED lights are distributed within the coil surrounding area.

[0007] As a preferred embodiment of this utility model, the LED light is located between two adjacent coils, which makes the distribution of the LED light on the circuit board more uniform and reasonable. It makes full use of the gap between adjacent coils to place the LED light, and the light emission is uniform and effective. It avoids the uneven light emission caused by the concentrated distribution of LED lights and improves the visual effect.

[0008] In a preferred embodiment of this invention, the circuit board is either a PCB or an FPC. The appropriate type of circuit board can be selected based on the actual design of the miniature fan and space constraints. Choosing a PCB ensures the strength and stability of the circuit board, providing a stable mounting base and reliable electrical connections for electronic components. Choosing an FPC, with its flexibility, allows for more flexible layout within a limited space, improving space utilization and reducing the weight of the fan.

[0009] In a preferred embodiment of this invention, the circuit board is provided with two solder pads corresponding to the start and end terminals of the coil. These solder pads are used for soldering connections to the start and end terminals of the coil, achieving electrical communication between the coil and the circuit board. This effectively simplifies the connection process between the coil and the circuit board, improves production efficiency, and ensures a strong and reliable connection.

[0010] In a preferred embodiment of this invention, the number of coils is three, forming a three-slot four-pole motor structure. Each coil requires two solder pads; the more coils there are, the more soldering operations are required. Compared to the traditional six-slot four-pole motor structure, the three-slot four-pole motor structure reduces the number of coils from six to three, effectively reducing the number of wires, improving wiring flexibility, and reducing the number of soldering operations, thus increasing soldering efficiency. The number of LEDs is three. The three LEDs work in conjunction with the three coils; the appropriate number of LEDs satisfies visual appeal without excessively increasing circuit complexity and cost, resulting in good economic efficiency and practicality.

[0011] As a preferred embodiment of this utility model, the coil is a coreless self-adhesive coil, which is made by winding self-adhesive enameled wire. The self-adhesive enameled wire has a self-adhesive effect, thereby fixing the shape of the coil and making it less prone to loosening, which brings convenience to the subsequent production and assembly processes.

[0012] A miniature fan includes the aforementioned LED-embedded miniature fan circuit board structure. Specifically, the miniature fan utilizes the optimized LED-embedded miniature fan circuit board structure described above, with LEDs strategically arranged within the coil winding area on the circuit board. This achieves better lighting and visual appeal without sacrificing fluid dynamics, meeting market demand for miniature fans that combine heat dissipation and visual appeal.

[0013] The beneficial effects of this utility model are as follows: The structure of this utility model is reasonably designed. The LED light is set in the coil winding area with the same distribution diameter as the coil. It cleverly utilizes the idle space in the coil winding area to place the LED light, so that the LED light and the coil share the same area and do not occupy the fluid space in the fan. This helps to improve the fluid performance of the micro fan and make its heat dissipation efficiency higher. At the same time, it also helps to improve the noise performance and make the fan run more quietly. In addition, it also reduces the coil's obstruction of the LED light and can present a better light-emitting and viewing effect.

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0015] Figure 1 This is a three-dimensional sectional view of the present invention.

[0016] Figure 2 This is an exploded structural diagram of the present invention. Figure 2 .

[0017] Figure 3 This is a three-dimensional structural diagram of the circuit board in this utility model.

[0018] Figure 4 This is a top view of the circuit board structure in this utility model. Detailed Implementation

[0019] See the example. Figures 1 to 4 This embodiment provides a miniature fan, which includes a base 1, a top cover 2, a rotor assembly 3, a circuit board 4, an LED light 5, and a coil 6.

[0020] The upper cover 2 is fastened to the base 1 to form a relatively closed cavity, which is used to accommodate components such as the rotor assembly 3, circuit board 4, LED light 5 and coil 6, providing basic structural support and protection for the fan.

[0021] The base 1 has a central tube in the middle. The rotor assembly 3 includes blades 31, motor housing 32, shaft core 33 and magnet 34. The blades 31 are sleeved on the motor housing 32, one end of the shaft core 33 is fixed at the center of the motor housing 32, and the magnet 34 is disposed inside the motor housing 32.

[0022] The circuit board 4 is disposed on the bottom surface within the base 1 and has a through hole 41 for the central tube to pass through. The appropriate type of circuit board 4 can be selected based on the actual design and space constraints of the micro fan. In this embodiment, the circuit board 4 is preferably an FPC (Flexible Printed Circuit), which is flexible and allows for a more flexible layout within a limited space, improving space utilization and reducing the fan's weight. In other embodiments, the circuit board 4 can also be a PCB (Printed Circuit Board). Choosing a PCB ensures the strength and stability of the circuit board, providing a stable mounting base and reliable electrical connections for electronic components.

[0023] Several coils 6 are symmetrically arranged around the central tube on the circuit board 4, meaning all coils 6 are distributed around the periphery of the central tube, forming a circular coil-encircling region 42. The coil-encircling region 42 is as follows: Figure 4 The gray area represents the region between the small-diameter circular trajectory formed by the inner outer walls of all coils 6 and the large-diameter circular trajectory formed by the outer outer walls of all coils 6.

[0024] The shaft core 33 is mounted on the central tube via bearings, allowing the rotor assembly 3 to rotate within the base 1 corresponding to the position of the coil 6. The outer bottom surface of the base 1 has a back iron empty slot corresponding to the position of the central tube, and a back iron 7 is provided within the back iron empty slot.

[0025] The coil 6 is preferably a coreless self-adhesive coil, which is made of self-adhesive enameled wire. This means the self-adhesive enameled wire has an added self-adhesive layer on the surface of ordinary enameled wire. It can form a self-adhesive layer using hot air or solvents, thus fixing the coil shape and preventing it from loosening, facilitating subsequent production and assembly processes. During installation, it can be adhered to the circuit board 4 using adhesive backing and dispensing processes. The circuit board 4 has two solder pads 43 corresponding to the start and end terminals of the coil 6. The solder pads 43 are used for soldering connections to the start and end terminals of the coil 6, achieving electrical communication between the coil 6 and the circuit board 4. This effectively simplifies the connection process between the coil and the circuit board 4, improves production efficiency, and ensures a strong and reliable connection.

[0026] The LEDs 5 are distributed within the coil winding area 42. Preferably, the LEDs 5 are located between two adjacent coils 6, making the distribution of the LEDs 5 on the circuit board more uniform and reasonable. This makes full use of the gaps between adjacent coils 6 to place the LEDs 5, resulting in uniform and good light emission. It also avoids uneven light emission caused by concentrated distribution of LEDs 5, thus improving the visual effect.

[0027] In this embodiment, the number of coils 6 is preferably three, forming a three-slot four-pole motor structure. Each coil 6 requires two solder pads 43. The more coils 6 there are, the more soldering operations are required. Compared to the traditional six-slot four-pole motor structure, the three-slot four-pole motor structure reduces the number of coils from six to three, effectively reducing the number of wires, improving wiring flexibility, and reducing the number of soldering operations, thus increasing soldering efficiency. The number of LED lights 5 is three. The three LED lights and three coils work together, and the appropriate number of LED lights can meet the visual viewing needs without excessively increasing the complexity and cost of the circuit, thus having good economic efficiency and practicality.

[0028] During operation, since the LED light 5 is located within the coil winding area 42 with the same diameter as the coil 6, the coil's obstruction of the LED light is reduced, making it easier for the light to shine out and presenting a better lighting effect. At the same time, the LED light does not occupy the fluid space inside the fan, effectively improving the fluid performance of the micro fan, making its heat dissipation efficiency higher and its operation quieter.

[0029] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model. As described in the above embodiments of this utility model, other fans obtained using the same or similar structures are all within the protection scope of this utility model.

Claims

1. A circuit board structure with an LED miniature fan, comprising a circuit board, an LED lamp, and a coil, characterized in that: Several coils are arranged symmetrically on the circuit board in a circular pattern, forming a coil-encircling area in a circular shape, and the LEDs are distributed within the coil-encircling area.

2. The circuit board structure with LED micro fan according to claim 1, characterized in that: The LED light is located between two adjacent coils.

3. The circuit board structure with LED micro fan according to claim 1, characterized in that: The circuit board is a PCB or an FPC.

4. The circuit board structure with LED micro fan according to claim 3, characterized in that: The circuit board has two solder pads corresponding to the start and end terminals of the coil.

5. The circuit board structure with LED micro fan according to claim 4, characterized in that: The number of coils is three.

6. The circuit board structure with LED micro fan according to claim 5, characterized in that: The number of LED lights is three.

7. The circuit board structure with LED micro fan according to any one of claims 1-6, characterized in that: The coil is a coreless self-adhesive coil.

8. A miniature fan, characterized in that: It includes the LED micro fan circuit board structure as described in any one of claims 1-7.

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