阅读说明：本技术 发光风扇 (Luminous fan ) 是由 黄韦强 詹伟平 于 2019-01-31 设计创作，主要内容包括：本发明提供了一种发光风扇,包括：扇框、主电路板、导光组件、导光扇轮。主电路板设置于扇框的托座之上,并具有第一发光单元。导光组件设置于主电路板的上方,并具有一入光面及一出光面,入光面具有导光柱；出光面则具有对应导光柱的反射结构。导光扇轮枢接于托座上。第一发光单元用以发射第一光线,并经由导光柱传递至反射结构,反射结构用以反射第一光线使其朝向导光组件中央扩散。(The present invention provides a light emitting fan, comprising: fan frame, main circuit board, leaded light subassembly, leaded light fan wheel. The main circuit board is arranged on the bracket of the fan frame and is provided with a first light-emitting unit. The light guide assembly is arranged above the main circuit board and is provided with a light inlet surface and a light outlet surface, and the light inlet surface is provided with a light guide column; the light-emitting surface is provided with a reflecting structure corresponding to the light guide column. The light guide fan wheel is pivoted on the bracket. The first light-emitting unit is used for emitting first light and transmitting the first light to the reflecting structure through the light guide column, and the reflecting structure is used for reflecting the first light to enable the first light to diffuse towards the center of the light guide assembly.)

1. A light-emitting fan, comprising:

a fan frame having a bracket;

the main circuit board is arranged on the bracket and is provided with at least one first light-emitting unit which is used for emitting a first light ray;

a light guide assembly disposed above the main circuit board, comprising:

a light incident surface having at least one light guide column corresponding to the at least one first light emitting unit; and

the light outgoing surface is opposite to the light incoming surface and is provided with at least one reflection structure corresponding to the at least one light guide column; and

a light guiding fan wheel pivoted to the bracket, comprising:

a hub for accommodating the light guide assembly; and

a plurality of fan blades annularly arranged on the peripheral surface of the hub;

the first light is transmitted to the at least one reflection structure through the at least one light guide column, and the at least one reflection structure is used for reflecting the first light to enable the first light to diffuse towards the center of the light guide assembly.

2. The light-emitting fan of claim 1 wherein the bracket has a shaft connecting portion, and the hub has a shaft pivotally connected to the shaft connecting portion.

3. The lighting fan of claim 2, wherein the main circuit board has a first shaft hole, and the coupling portion is disposed through the first shaft hole.

4. The light-emitting fan of claim 2, comprising a stator set disposed above the main circuit board and a rotor set disposed on an inner surface of the hub.

5. The light-emitting fan of claim 4, wherein the stator assembly has a second shaft hole, and the shaft coupling portion is disposed through the second shaft hole.

6. The light-emitting fan of claim 4, wherein the stator set has at least one relief opening corresponding to the at least one first light-emitting unit.

7. The light-emitting fan of claim 6, wherein the at least one light guide pillar is disposed through the at least one recess opening and corresponds to the at least one first light-emitting unit.

8. The light-emitting fan of claim 1, wherein the fan frame has a ring frame and a receiving cavity surrounded by the ring frame, the receiving cavity being configured to receive the light-guiding fan wheel.

9. The light-emitting fan of claim 8 further comprising an annular light guide and an annular light-emitting module, wherein the annular light guide is disposed at an inner edge of the annular frame and surrounds the light-guiding fan wheel, and the annular light-emitting module is attached to the annular light guide.

10. The light-emitting fan of claim 9, wherein the inner edge of the annular frame has an annular groove for receiving the annular light guide and the annular light-emitting module and a light-diffusing ring corresponding to the annular groove for combining with the annular frame and covering the annular groove.

11. The light-emitting fan of claim 10, wherein the light-diffusing ring is made of a light-transmissive or light-guiding material.

12. The light-emitting fan of claim 9, wherein the annular light-emitting module comprises an annular circuit board and at least one second light-emitting unit disposed on the annular circuit board.

13. The light-emitting fan of claim 12, wherein the annular light guide has an annular light-emitting surface, a light-reflecting slope opposite to the annular light-emitting surface, and an inner annular wall surface perpendicular to the annular light-emitting surface for being combined with the annular circuit board.

14. The light-emitting fan of claim 13, wherein the inner ring wall has an inner ring recess corresponding to the light-reflecting surface, the at least one second light-emitting unit is disposed in the inner ring recess, the at least one second light-emitting unit is configured to emit a second light, the second light is transmitted to the light-reflecting surface through the inner ring recess, and the light-reflecting surface is configured to reflect the second light to the annular light-emitting surface.

Technical Field

The present invention relates to a fan, and more particularly, to a fan with a light emitting function.

Background

In the current life, desktop computers have become essential household appliances for small and medium-sized families, and generally, a heat dissipation fan is arranged in a computer host for household use and used for exhausting hot air in a cabinet body so as to avoid damage to a processor, a mainboard or a hard disk caused by overheating.

In order to meet the needs or preferences of different users, there are computers with transparent shells sold in the market at present, so that users can directly observe the internal structure or condition of the computer. On the other hand, the computer host can also be provided with a heat radiation fan with a light-emitting function, so that when the computer host is started, the heat radiation fan with the light-emitting function can emit light and perform heat radiation simultaneously, and the appearance of the computer host is more modern besides the stable operation of the computer host is maintained. In order to reduce the overall size of the light-emitting fan, the light-emitting fan can better meet the trend of thinning and miniaturization of the computer host or the electronic device, and the solid-state light source with small size and high light-emitting efficiency, such as: light emitting diodes are also widely used in light emitting modules of various types of light emitting fans. However, since the light emitted by the solid-state light source is mostly linear, and the diffusion angle is small, when the volume of the light-emitting fan is reduced, the path for transmitting the light is easily shortened, the range of light projection is excessively concentrated, and a noise (hot spot) with uneven brightness is formed at the position where the light source projects, so that the light-emitting fan cannot generate an even brightness effect. For example, if a mark or symbol is disposed on the hub or the fan blade of the light-emitting fan, the generation of noise may cause the mark or symbol not to be fully displayed, thereby affecting the overall visual effect of the light-emitting fan.

In view of this, the present invention provides a light-emitting fan capable of uniformly diffusing light emitted from a linear light source.

Disclosure of Invention

The present invention is directed to a light-emitting fan, which can uniformly diffuse light emitted from a linear light source.

To achieve the above object, the present invention provides a light-emitting fan, including:

a fan frame having a bracket;

the main circuit board is arranged on the bracket and is provided with a first light-emitting unit, and the first light-emitting unit is used for emitting first light;

light guide assembly sets up in the top of main circuit board, includes:

the light incident surface is provided with a light guide column corresponding to the first light emitting unit; and

the light emitting surface is opposite to the light incident surface and is provided with a reflecting structure corresponding to the light guide column; and

leaded light fanning wheel, the pin joint includes in the bracket:

the wheel hub is used for accommodating the light guide assembly; and

the fan blades are annularly arranged on the peripheral surface of the hub;

the first light is transmitted to the reflecting structure through the light guide column, and the reflecting structure is used for reflecting the first light to enable the first light to diffuse towards the center of the light guide assembly.

In the above preferred embodiment, the bracket has a shaft connecting portion, and the hub has a rotating shaft for pivotally connecting to the shaft connecting portion.

In the above preferred embodiment, the main circuit board has a first shaft hole, and the coupling portion is disposed through the first shaft hole.

In the above preferred embodiment, the rotor assembly includes a stator assembly and a rotor assembly, the stator assembly is disposed above the main circuit board, and the rotor assembly is disposed on the inner surface of the hub.

In the above preferred embodiment, the stator assembly has a second shaft hole, and the shaft coupling portion is disposed through the second shaft hole.

In the above preferred embodiment, the stator set has a receding opening, and the receding opening corresponds to the first light-emitting unit.

In the above preferred embodiment, the light guide pillar is disposed through the abdicating opening and corresponds to the first light emitting unit.

In the above preferred embodiment, the fan frame has an annular frame and a receiving groove surrounded by the annular frame, and the receiving groove is used for receiving the light guide fan wheel.

In the above preferred embodiment, the light guide member further includes an annular light guide member and an annular light emitting module, the annular light guide member is disposed at an inner edge of the annular frame and surrounds the light guide fan wheel, and the annular light emitting module is attached to the annular light guide member.

In the above preferred embodiment, the inner edge of the annular frame has an annular groove and a light diffusion ring corresponding to the annular groove, the annular groove is used for accommodating the annular light guide and the annular light emitting module, and the light diffusion ring is used for being combined with the annular frame and covering the annular groove.

In the above preferred embodiment, the light diffusion ring is made of a light-transmitting or light-guiding material.

In the above preferred embodiment, the annular light emitting module includes an annular circuit board and a second light emitting unit disposed on the annular circuit board.

In the above preferred embodiment, the annular light guide member has an annular light emitting surface, a light reflecting slope opposite to the annular light emitting surface, and an inner ring wall surface perpendicular to the annular light emitting surface and configured to be combined with the annular circuit board.

In the above preferred embodiment, the inner ring wall has an inner ring recess corresponding to the reflective slope, the second light emitting unit is disposed in the inner ring recess, the second light emitting unit is configured to emit a second light, the second light is transmitted to the reflective slope through the inner ring recess, and the reflective slope is configured to reflect the second light to the annular light emitting surface.

Drawings

Fig. 1A is a schematic perspective view of a light-emitting fan according to the present invention;

fig. 1B is an exploded perspective view of the light-emitting fan provided in the present invention;

FIG. 2 is a perspective view of a light guide assembly according to the present invention;

fig. 3A is a perspective cross-sectional view of a light-emitting fan provided in the present invention;

FIG. 3B is an enlarged view of area A of FIG. 3A; and

fig. 4 is a schematic view illustrating a state of the light-emitting fan according to the present invention.

Wherein the reference numerals are as follows:

region A

L1, L2 light ray

1 luminous fan

10 light guide fan wheel

101 wheel hub

1011 rotating shaft

20 fan frame

201 annular frame

2011 annular groove

2012 light diffusion ring

202 container

203 bracket

2031 coupling part

204 rib

2041 ventilating opening

30 main circuit board

301 first shaft hole

302 first light-emitting unit

40 Ring light guide

401 inner ring wall surface

4011 Limit Flange

4012 inner ring recess

402 annular light-emitting surface

403 light reflecting slope

50 annular light emitting module

501 annular circuit board

502 second light emitting unit

60 stator group

601 second shaft hole

602 abdication opening

70 light guide assembly

701 light-emitting surface

7011 reflective structure

702 incident light surface

7021 light guide column

703 third shaft hole

80 rotor set

Detailed Description

The advantages and features of the present invention and methods of accomplishing the same will be understood more readily by reference to the following detailed description of exemplary embodiments and accompanying drawings. This invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

First, referring to fig. 1A and fig. 1B, fig. 1A is a schematic perspective view of a light-emitting fan according to the present invention; fig. 1B is an exploded perspective view of the light-emitting fan provided in the present invention. The light-emitting fan 1 includes: the light guide fan wheel 10, the fan frame 20, the main circuit board 30, the annular light guide 40, the annular light emitting module 50, the stator set 60, the light guide assembly 70 and the rotor set 80.

The light guide fan wheel 10 includes a hub 101 and a plurality of blades 102 annularly disposed on an outer circumferential surface of the hub 101. The hub 101 has a rotating shaft 1011 for accommodating the stator assembly 60 and the light guide assembly 70, and the rotor assembly 80 is disposed around the inner circumferential surface of the hub 101 and can rotate relative to the stator assembly 60. In this embodiment, a logo or symbol (not shown) may be disposed on the hub 101 of the light guide fan 10, and the hub 101 is made of a light-transmitting or light-guiding material, such as: polycarbonate (PC) or acryl, so that when light is transmitted from the hub 101, a mark or symbol (not shown) may be simultaneously displayed thereon. In addition, in the manufacturing process of the light guide fan wheel 10, the diffusion powder or the fluorescent powder can be mixed into the structure of the hub 101, so as to improve the light guide or light emitting effect of the hub 101. The fan blades 102 may be made of a material having no light transmission or light guide characteristics, so as to prevent light from being dissipated to the fan blades 102, which may affect the overall visual effect of the light-emitting fan 1. In practical applications, the fan blade 102 may be made of a transparent or light-guiding material according to the needs of consumers, and is not limited to the embodiment of the present invention.

The fan frame 20 includes: the annular frame 201, a containing groove 202 surrounded by the annular frame 201, a bracket 203 and a plurality of ribs 204. The accommodating groove 202 is used for accommodating the light guide fan wheel 10; the bracket 203 is disposed in the receiving cavity 202 and has an axial connecting portion 2031, and the bracket 203 is connected to the ring frame 201 by a plurality of ribs 204 and separated by the ribs 204 to form a plurality of ventilation openings 2041 in the receiving cavity 202. On the other hand, the inner edge of the ring frame 201 has a ring groove 2011 and a light diffusion ring 2012 corresponding to the ring groove 2011. The annular groove 2011 is used for accommodating the annular light guide 40 and the annular light emitting module 50, and the light diffusion ring 2012 is used for being combined with the annular frame 201 to cover the annular groove 2011, so that the annular light guide 40 and the annular light emitting module 50 can be circumferentially arranged on the periphery of the light guide fan wheel 10. In this embodiment, the light diffusion ring 2012 can also be made of a light-transmitting or light-guiding material, and the light emitted from the annular light-guiding member 40 can be further diffused by the light diffusion ring 2012, so as to form an aperture with uniform brightness on the periphery of the light-guiding fan wheel 10.

With reference to fig. 1B, the main circuit board 30 is disposed on the bracket 203 and has a first shaft hole 301 and one or more first light Emitting units 302, the stator group 60 is disposed above the main circuit board 30 and electrically connected to the main circuit board 30, the stator group 60 has a second shaft hole 601 and a recess opening 602 corresponding to the position where the first light Emitting unit 302 is disposed, the main circuit board 30 controls and provides power to the first light Emitting unit 302 and the stator group 60, respectively, to drive the first light Emitting unit 302 to emit a first light, and simultaneously control the rotation speed of the light guiding fan wheel 10 by controlling the power of the stator group 60. in this embodiment, the first light Emitting unit 302 is a light source packaged by a gel package process instead of a case, so as to further reduce the size and volume of the first light Emitting unit 302, so that the first light Emitting unit 302 can be disposed in the space and can simultaneously emit all the generated light into the narrow light guiding structure, the first light Emitting unit 302 can be a light Emitting Diode (L Emitting Diode, emission Diode t < 1 >, ", emission Diode (L), emission Diode (emission Diode), emission Diode (ttg), emission Diode (L), emission Diode (emission Diode).

Referring to fig. 1B and fig. 2, fig. 2 is a perspective view of a light guide assembly according to the present invention. In fig. 2, the light guide assembly 70 is disposed above the main circuit board 30 and can be combined with the stator assembly 60, and the light guide assembly 70 includes: the light emitting surface 701, the light incident surface 702 and a third shaft hole 703 penetrating the light emitting surface 701 and the light incident surface 702. The coupling portion 2031 is sequentially inserted through the first shaft hole 301, the second shaft hole 601, and the third shaft hole 703, and is pivotally connected to the rotating shaft 1011 of the hub 10, so that the light guide fan 10 can rotate relative to the bracket 203. One or more light guide columns 7021 extend from the light incident surface 702 of the light guide assembly 70, and the light guide columns 7021 are disposed through the offset openings 602 of the stator set 60, so that one end of each light guide column 7021 can be attached to the corresponding first light emitting unit 302, and can completely receive the first light emitted by the first light emitting unit 302; the light emitting surface 701 opposite to the light incident surface 702 has a reflective structure 7011 corresponding to the position where the light guide pillar 7021 is disposed. The reflective structure 7011 is configured to reflect the first light transmitted to the light-emitting surface 701 through the light-guiding pillar 7021, so that the first light is diffused toward the center of the light-guiding assembly 70 and further transmitted to the hub 101 through the light-emitting surface 701 to be emitted, thereby effectively reducing the generation of light source noise and making the brightness of the hub 101 of the light-guiding fan wheel 10 more uniform. Although the invention provides only four light guide columns 7021 extending from the light incident surface 702; the light emitting surface 701 has four embodiments of the corresponding reflective structures 7011, but in practical applications, the number and the positions of the light guiding rods 7021 and the corresponding reflective structures 7011 can be adjusted according to the number and the arrangement positions of the first light emitting units 302, which is not limited to the embodiments provided in the present invention.

Referring to fig. 3A and 3B, fig. 3A is a perspective cross-sectional view of a light-emitting fan provided by the present invention; fig. 3B is an enlarged view of the area a in fig. 3A. In fig. 3A, the stator set 60 and the light guide assembly 70 are disposed in the hub 101, the light guide column 7021 of the light guide assembly 70 is disposed through the recess opening 602 of the stator set 60, and one end of the light guide column 7021 abuts against the corresponding first light emitting unit 302, so as to completely receive the first light emitted by the first light emitting unit 302. The annular light guide 40 and the annular light emitting module 50 are disposed in the annular groove 2011; the light diffusion ring 2012 covers the annular groove 2011 and diffuses the light emitted from the annular light guide 40.

In fig. 3B, the annular light guide 40 has: an inner ring wall 401, an annular light emitting surface 402, and a reflective slope 403 opposite to the annular light emitting surface 402. The inner ring wall surface 401 is perpendicular to the annular light emitting surface 402, and a limiting flange 4011 is arranged on one side, connected to the annular light emitting surface 402, of the inner ring wall surface 401; the opposite side is provided with an inner ring recess 4012 corresponding to the light reflecting slope 403. The ring-shaped light emitting module 50 includes: the lighting device includes a ring-shaped circuit board 501 and one or more second light-emitting units 502 disposed on the ring-shaped circuit board 501. The second light emitting unit 502 is also a light source packaged by a housing replaced by a colloid packaging process, and has a smaller size and volume. The second light emitting unit 502 may also be: a light emitting diode unit, an organic light emitting diode, a quantum dot light emitting diode unit, or an electroluminescent unit. In the present embodiment, a surface portion of the annular circuit board 501, on which the second light emitting unit 502 is disposed, is attached to the inner ring wall 401, and an end surface of the annular circuit board 501 abuts against the limiting flange 4011, so as to fix a relative position between the annular circuit board 501 and the annular light guiding member 40. The second light emitting unit 502 is disposed in the inner ring recess 4012 and emits a second light.

Referring to fig. 4, fig. 4 is a schematic view illustrating a state of light emission of the light emitting fan of the present invention, in fig. 4, in the light guide assembly 70 disposed in the hub 101, one end of the light guide column 7021 of the light guide assembly abuts against the first light emitting unit 302, and the first light L emitted from the first light emitting unit 302 is transmitted to the reflection structure 7011 of the light emitting surface 701 through the light guide column 7021, then, the reflection structure 7011 reflects the first light L, so that the first light L is diffused toward the center of the light guide assembly 70, and further transmitted from the light emitting surface 701 to the hub 101, so that the brightness generated by the hub 101 is more uniform.

On the other hand, a second light ray L2 emitted by the second light emitting unit 502 is transmitted to the reflective slope 403 through the inner ring recess 4012, the reflective slope 403 then reflects the second light ray L2, so that the second light ray L2 is transmitted toward the annular light emitting surface 402, the second light ray L2 emitted from the light emitting surface 402 is continuously transmitted to the light diffusing ring 2012 above, and then the light rays are diffused by the light diffusing ring 2012, thereby effectively reducing the occurrence of light source noise, and forming a diaphragm with uniform brightness on the periphery of the light guiding fan wheel 10.

Compared with the prior art, the light-emitting fan provided by the invention has the advantages that the linear light emitted by the light-emitting unit can be uniformly diffused by the reflecting structure in the light guide component, so that the light-emitting fan can effectively reduce the generation of light source noise while reducing the overall size and volume; therefore, the present invention is a creation with great industrial value.

The present invention may be modified in various ways by those skilled in the art without departing from the scope of the appended claims.