Light-guiding fan structure

Abstract

The utility model belongs to fan technical field especially relates to light guide fan structure, including support, motor assembly, fan assembly and light guide cover, the top side of support extends upwards and has the central tube, the motor assembly is set in the outside of central tube, the outer periphery of motor assembly is provided with the light source, fan assembly includes cylinder and blade, the cylinder includes inner ring and outer ring, the accommodating cavity that inner ring is equipped with the opening of motor assembly side, the outside wall of outer ring is equipped with a plurality of blades, the upper and lower through guide ring cavity is formed between outer ring and inner ring for installing light guide cover, guide ring cavity is located the top of light source, makes the light that light source emits to pass through the bottom of guide ring cavity, is guided in the light guide cover, forms the local light emitting area in the front of cylinder. The light of light source forms the local directional light ring effect in guide ring cavity through light guide cover. Light emitting area concentrates in guide ring cavity, effectively reduces the light emitting area of fan, controls light pollution.

Description

Technical Field

[0001] This utility model belongs to the field of fan technology, and in particular relates to a light guide fan structure. Background Technology

[0002] With the advancement of technology, the functions of computers and other 3C products are becoming increasingly diversified. Their internal electronic components generate a significant amount of heat. If these components overheat, it can affect their performance and stability. Therefore, cooling devices are needed to dissipate heat and ensure the proper functioning of these electronic components. Cooling fans are a common type of cooling device. Currently, the cooling fans used in computers are typically black brushless fans. To enhance the aesthetics of brushless fans during operation, the fan hub and blades are often designed to create a unified lighting effect.

[0003] Chinese patent document CN206206211U discloses a light-emitting heat dissipation fan, including a fan frame, a fan frame rib support, fan blades, a fan motor mounting part, and a fan motor. The fan frame has a lamp mounting slot and a light-emitting element mounted on the lamp mounting slot. The fan frame rib support is located between the fan frame and the fan motor mounting part. The lamp mounting slot includes a bottom lamp ring portion, which is mounted in the fan frame rib support. At least one light-emitting element is mounted on the bottom lamp ring portion. The lamp ring shell is transparent. The fan frame and fan blades are made of transparent or translucent materials of various colors.

[0004] In the aforementioned patent documents, the fan blades and frame are made of transparent or translucent materials, so that when the LEDs emit light, the entire fan creates a three-dimensional, all-around colored light effect. However, the entire fan emitting light can easily cause glare and result in light pollution. Utility Model Content

[0005] The purpose of this invention is to provide a light guide fan structure that solves the problem of existing light-emitting fans causing glare and light pollution due to their overall light emission.

[0006] To achieve the above objectives, this utility model provides a light guide fan structure, including a bracket, a motor assembly, a fan assembly, and a light guide cover. A central tube extends upward from the top side of the bracket. The motor assembly is sleeved on the outside of the central tube and drives the fan assembly to rotate. A light source is arranged around the outer periphery of the motor assembly. The fan assembly includes a cylinder and blades. The cylinder includes an inner ring and an outer ring. The inner ring has a receiving cavity opening towards the motor assembly. Multiple blades are arranged on the outer side wall of the outer ring. A vertically penetrating guide ring cavity is formed between the outer ring and the inner ring for mounting the light guide cover. The guide ring cavity is located above the light source, allowing light emitted from the light source to pass through the bottom of the guide ring cavity and, guided by the light guide cover, form a localized light-emitting area on the front side of the cylinder.

[0007] Furthermore, the outer ring and the inner ring are connected by at least two connecting arms spaced apart circumferentially, and the gap between adjacent connecting arms is connected vertically to the guide ring cavity.

[0008] Furthermore, the connecting arm is located on the lower end of the inner ring near the bracket, and is used to support the bottom of the light guide cover; the height of the guide ring cavity is greater than or equal to the sum of the height of the light guide cover and the height of the connecting arm.

[0009] Furthermore, the motor assembly includes a coil and a PCB board. The coil is electrically connected to the PCB board and is located on the top center side of the PCB board. A through hole is provided at the center of the coil and the PCB board. The through hole is sleeved on the outside of the central tube. The light source is located around the outer peripheral edge of the top side of the PCB board and is electrically connected to the PCB board.

[0010] Furthermore, the bracket is also provided with an upwardly extending retaining ring, which together with the central tube defines a mounting cavity for mounting the bottom of the motor assembly. The bottom end of the outer ring extends downward to the radially outer side of the PCB board and is located on the radially inner side of the retaining ring, forming a radially staggered covering structure with the retaining ring in the circumferential direction.

[0011] Furthermore, the bottom end of the inner ring is higher than the bottom end of the outer ring to avoid the light source.

[0012] Furthermore, the fan assembly also includes a shaft, a bearing, and a magnetic ring. The bearing is disposed inside the central tube. One end of the shaft is rotatably connected to the bearing, and the other end is supported and installed on the inner top surface of the receiving cavity. The magnetic ring is fixedly disposed inside the receiving cavity.

[0013] Furthermore, the light source is a light strip or an LED light.

[0014] Furthermore, the light guide cover is a hollow cylindrical structure made of transparent or semi-transparent material.

[0015] The above-mentioned technical solutions in the light guide fan structure provided by this utility model embodiment have at least the following technical effects:

[0016] The light emitted by the power source passes through the guide ring cavity and is diffused by the light guide cover, forming a localized annular luminous area on the front of the fan assembly's cylinder. This creates a directional halo effect at the guide ring cavity. A label layer can be placed on the outer side of the inner ring. When the fan assembly rotates, the label layer and the halo create a superimposed visual effect, enhancing the layering of the light effect. The luminous area is concentrated in the guide ring cavity, eliminating the need to limit the light transmittance of the blades, outer ring, and inner ring. This prevents light from diffusing into the inner ring and blades, effectively reducing the fan's luminous area and minimizing interference from stray ambient light, thus controlling light pollution. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural diagram of the light guide fan structure provided in an embodiment of the present utility model.

[0019] Figure 2 An exploded view of the light guide fan structure provided in an embodiment of this utility model.

[0020] Figure 3 A partial structural diagram of the fan assembly of the light guide fan structure provided in this embodiment of the utility model.

[0021] Figure 4 Another structural diagram of the fan assembly of the light guide fan structure provided in the embodiment of this utility model.

[0022] Figure 5 A structural diagram of the motor assembly of the light guide fan structure provided in this embodiment of the utility model.

[0023] Figure 6 A structural diagram of the bracket for the light guide fan structure provided in this embodiment of the utility model.

[0024] Figure 7 This is a cross-sectional view of the light guide fan structure provided in an embodiment of the present utility model.

[0025] Figure 8 The light-emitting effect diagram of the light guide fan structure provided in the embodiment of this utility model.

[0026] In the diagram, 100 is the bracket, 110 is the central tube, and 120 is the retaining ring.

[0027] 200. Motor assembly; 210. Coil; 220. PCB board; 230. Through hole.

[0028] 300. Fan assembly; 310. Shell; 311. Inner ring; 312. Outer ring; 313. Receiving cavity; 314. Connecting arm; 320. Blade; 330. Guide ring cavity; 340. Shaft; 350. Bearing; 360. Magnetic ring.

[0029] 400. Light guide cover

[0030] 500. Light source. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0032] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0035] In one embodiment of the light guide fan structure of this utility model, please refer to... Figures 1 to 8. The light guide fan structure includes a bracket 100, a motor assembly 200, a fan assembly 300, and a light guide cover 400. A central tube 110 extends upward from the top side of the bracket 100. The motor assembly 200 is sleeved on the outside of the central tube 110 and is used to drive the fan assembly 300 to rotate. A light source 500 is arranged around the outer periphery of the motor assembly 200. The fan assembly 300 includes a cylinder 310 and blades 320. The cylinder 310 includes an inner ring 311 and an outer ring 320. The inner ring 311 has a receiving cavity 313 that opens towards the motor assembly 200. Multiple blades 320 are arranged on the outer side wall of the outer ring 312. A guide ring cavity 330 that runs vertically through the outer ring 312 and the inner ring 311 is formed for mounting the light guide cover 400. The guide ring cavity 330 is located above the light source 500, so that the light emitted by the light source 500 passes through the bottom of the guide ring cavity 330 and is guided by the light guide cover 400 to form a local light-emitting area on the front of the cylinder 310.

[0036] Specifically, the light emitted by the power source 500 passes through the guide ring cavity 330 and is guided and diffused by the light guide cover 400, forming a localized annular light-emitting area on the front of the cylinder 310 of the fan assembly 300, creating a directional halo effect at the guide ring cavity 330. A label layer can be placed on the outer side of the inner ring 311. When the fan assembly rotates, the label layer and the halo create a superimposed visual effect, enhancing the layering of the light effect. The light-emitting area is concentrated in the guide ring cavity 330, eliminating the need to limit the light transmittance of the blades 320, outer ring 312, and inner ring 311, preventing light from diffusing into the inner ring and blades. This effectively reduces the light-emitting area of ​​the fan and reduces interference from ambient stray light, controlling light pollution.

[0037] Preferably, please refer to Figure 2 The light guide 400 is a hollow cylindrical structure made of transparent or semi-transparent material. Specifically, the hollow cylindrical light guide 400 is fitted into the guide ring cavity 330. The closed annular cross-section of the light guide 400 ensures that light is uniformly transmitted circumferentially, forming a luminous halo on the front of the cylinder 310. The transparent or semi-transparent light guide 400 converts the direct light from the light source into diffused light output, while avoiding glare from the direct light of the light source to the user.

[0038] For further details, please refer to... Figure 4The outer ring 312 and the inner ring 311 are connected by at least two circumferentially spaced connecting arms 314, and the gap between adjacent connecting arms 314 is connected vertically to the guide ring cavity 330. Specifically, when the motor assembly 200 drives the fan assembly 300 to rotate, the inner ring 311 and the outer ring 312 of the cylinder are fixed together as a single structure through the connecting arms 314, driving the blades 320 to rotate synchronously to achieve a heat dissipation effect; at the same time, the light emitted by the light source 500 passes through the gap between adjacent connecting arms 314 and enters the light guide cover 400 in the guide ring cavity 330. After being guided and diffused by the light guide cover 400, a directional halo effect is formed, and the local light-emitting area on the front of the cylinder 310 does not change due to the rotation of the fan assembly 300.

[0039] For further details, please refer to... Figure 7 The connecting arm 314 is located on the lower end of the inner ring 311 near the bracket 100 and is used to support the bottom of the light guide hood 400. The height of the guide ring cavity 330 is greater than or equal to the sum of the height of the light guide hood 400 and the height of the connecting arm 314. Specifically, the light guide hood 400 is embedded in the guide ring cavity 330. During the rotation of the fan assembly 300, the connecting arm 314 provides axial support and limit for the bottom of the light guide hood 400, and works in conjunction with the inner ring 311 and the outer ring 312 to radially limit the light guide hood 400, preventing the light guide hood 400 from falling into the bracket 100 or the motor assembly 200 due to centrifugal force by detaching from the guide ring cavity 330. The bottom surface of the connecting arm 314 is flush with the bottom surface of the inner ring 311. The axial height of the guide ring cavity 330 is greater than or equal to the sum of the height of the light guide cover 400 and the height of the connecting arm 314. This dimensional relationship ensures that the light guide cover 400 is completely contained within the guide ring cavity 330, avoiding the light guide cover 400 from being exposed and causing radial diffusion of light. This strictly limits the light-emitting area to the circumferential range of the guide ring cavity 330, eliminating large-scale halos.

[0040] For further details, please refer to... Figure 5 The motor assembly 200 includes a coil 210 and a PCB board 220. The coil 210 is electrically connected to the PCB board 220 and is located on the top center side of the PCB board 220. A through hole 230 is provided at the center of the coil 210 and the PCB board 220. The through hole 230 is sleeved on the outside of the central tube 110. The light source 500 is located around the outer peripheral edge of the top side of the PCB board 220 and is electrically connected to the PCB board 220. Specifically, the coil 210 and the PCB board 220 are positioned on the outside of the central tube 110 through the through hole 230 to prevent radial displacement when the motor assembly 200 drives the fan assembly 300 to rotate.

[0041] Preferably, the light source 500 is a light strip or an LED light. Specifically, the light source 500 surrounds the outer periphery of the top side of the PCB board 220, preventing the light source 500 from contacting the coil 210 and blocking the direct conduction of heat generated by the coil 210 during operation to the light source 500, thus extending the service life of the light source 500. The light source 500 includes six LEDs evenly distributed along the top surface of the PCB board 220, with the light emission direction of each LED perpendicular to the plane of the PCB board 220 and aligned with the guide ring cavity 330. When the PCB board 220 is powered on, the light emitted by the LEDs enters the guide ring cavity 330 axially, achieving uniform light guidance throughout the circumference within the light guide cover 400, reducing light refraction loss. Furthermore, the PCB board 220 can adjust the brightness of the light source 500 and the color of different LEDs, allowing the light guide cover 400 to form a colorful and vibrant halo on the front of the cylinder 310, enhancing the visual effect.

[0042] For further details, please refer to... Figure 6 and Figure 7 The bracket 100 also has an upwardly extending retaining ring 120, which, together with the central tube 110, defines a mounting cavity for mounting the bottom of the motor assembly 200. The bottom end of the outer ring 312 extends downward to the radially outer side of the PCB board 220 and is located radially inner to the retaining ring 120, forming a radially staggered covering structure with the retaining ring 120 in the circumferential direction. Specifically, the bottom end of the outer ring 312 extends to the radially outer side of the PCB board 220, and the cylindrical wall of the outer ring 312 forms a light constraint boundary, restricting the light from the top side light source of the PCB board 220 to the closed light path formed by the guide ring cavity 330 in the outer ring and the receiving cavity 313 in the inner ring. The bottom end of the outer ring 312 extends into the inner side of the retaining ring 120, and the outer ring 312 and the retaining ring 120 form a radially staggered covering structure in the circumferential direction, blocking light leakage to the outside of the outer ring 120 and stray light generated by the blades 320 through the axial overlap area of ​​the outer ring 312 and the retaining ring 120. Preferably, a circumferential notch is provided on the outer bottom outer side of the outer ring 312, making the bottom width of the outer ring 312 smaller than the top width to avoid interference with the retaining ring 120. Specifically, the notch design ensures that when the outer ring 312 and the retaining ring 120 form an interlocking covering structure, there is a gap between the outer sidewall of the outer ring 312 and the inner sidewall of the retaining ring 120. When the fan assembly 300 rotates, causing the outer ring 312 to rotate, the outer ring 312 will not contact the retaining ring 120 to avoid interference.

[0043] For further details, please refer to... Figure 4 and Figure 7 The bottom of the inner ring 311 is higher than the bottom of the outer ring 312 to avoid interference with the light source 500. Specifically, when the fan assembly 300 rotates, the inner ring 311 rotates synchronously to avoid interference between the inner ring 311 and the light source 500.

[0044] For further details, please refer to... Figure 2 and Figure 7The fan assembly 300 also includes a shaft 340, a bearing 350, and a magnetic ring 360. The bearing 350 is located inside the central tube 110. One end of the shaft 340 is rotatably connected to the bearing 350, and the other end is supported and mounted on the inner top surface of the receiving cavity 313. The magnetic ring 360 is fixedly located inside the receiving cavity 313. Specifically, the magnetic ring 360 constitutes the rotor component of the fan assembly 300. The coil 210 of the motor assembly is fixed to the bracket 100 as a stator component. When the motor assembly 200 is energized, the magnetic fields of the stator component and the rotor component interact to drive the rotor to rotate the fan assembly 300 around the axis of the shaft 340. The shaft 340 is pivotally connected to the central tube 110 through the bearing 350 to reduce the noise of the fan rotation.

[0045] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A light-guiding fan structure, characterized by, The system includes a bracket, a motor assembly, a fan assembly, and a light guide cover. A central tube extends upward from the top side of the bracket. The motor assembly is fitted around the outside of the central tube and drives the fan assembly to rotate. A light source is arranged around the outer periphery of the motor assembly. The fan assembly includes a cylinder and blades. The cylinder includes an inner ring and an outer ring. The inner ring has a receiving cavity that opens towards the motor assembly. The outer ring has multiple blades on its outer side wall. A guide ring cavity is formed between the outer ring and the inner ring, which is used to install the light guide cover. The guide ring cavity is located above the light source, so that the light emitted by the light source passes through the bottom of the guide ring cavity and is guided by the light guide cover to form a local light-emitting area on the front of the cylinder.

2. The light guide fan structure of claim 1, wherein: The outer ring and the inner ring are connected by at least two connecting arms spaced apart circumferentially, and the gap between adjacent connecting arms is connected vertically to the guide ring cavity.

3. The light guide fan structure of claim 2, wherein: The connecting arm is located on the lower end of the inner ring near the bracket and is used to support the bottom of the light guide cover; the height of the guide ring cavity is greater than or equal to the sum of the height of the light guide cover and the height of the connecting arm.

4. The light guide fan structure according to any one of claims 1 to 3, characterized in that: The motor assembly includes a coil and a PCB board. The coil is electrically connected to the PCB board and is located on the top center of the PCB board. A through hole is provided at the center of the coil and the PCB board. The through hole is sleeved on the outside of the central tube. The light source is located around the outer peripheral edge of the top side of the PCB board and is electrically connected to the PCB board.

5. The light guide fan structure of claim 4, wherein: The bracket is also provided with an upwardly extending retaining ring, which together with the central tube defines a mounting cavity for mounting the bottom of the motor assembly. The bottom end of the outer ring extends downward to the radially outer side of the PCB board and is located on the radially inner side of the retaining ring, forming a radially staggered covering structure with the retaining ring in the circumferential direction.

6. The light guide fan structure of claim 5, wherein: The bottom of the inner ring is higher than the bottom of the outer ring to avoid the light source.

7. The light guide fan structure of claim 4, wherein: The fan assembly also includes a shaft, a bearing, and a magnetic ring. The bearing is located inside the central tube. One end of the shaft is rotatably connected to the bearing, and the other end is supported and installed on the inner top surface of the receiving cavity. The magnetic ring is fixedly located inside the receiving cavity.

8. The light guide fan structure of claim 1, wherein: The light source is a light strip or an LED light.

9. The light guide fan structure of claim 1, wherein: The light guide cover is a hollow cylindrical structure made of transparent or semi-transparent material.

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