CN113217421A

CN113217421A - Luminous fan

Info

Publication number: CN113217421A
Application number: CN202010070162.8A
Authority: CN
Inventors: 许实满; 岳乾成
Original assignee: Yahao Electronic Hardware & Plastic Huizhou Co ltd
Current assignee: Yahao Electronic Hardware & Plastic Huizhou Co ltd
Priority date: 2020-01-21
Filing date: 2020-01-21
Publication date: 2021-08-06
Also published as: TWI762862B; TW202129155A

Abstract

The invention discloses a luminous fan which comprises a fan blade frame, a fan blade and a luminous element. The fan blade frame comprises a base, a first assembling ring and a second assembling ring. The first assembling ring is arranged on the base in a stacking mode. The second assembling ring is overlapped on the first assembling ring, and the first assembling ring is arranged between the base and the first assembling ring, so that the first assembling ring and the second assembling ring jointly surround an accommodating space. The fan blade is positioned in the containing space and is rotatably arranged on the base. The luminous piece is positioned in the first assembly ring or the second assembly ring. One of the first assembly ring and the second assembly ring is formed by injection molding of plastic with light transmission characteristics, the other one of the first assembly ring and the second assembly ring is formed by injection molding of plastic with light shading characteristics, and a light ray emitted by the light emitting piece is emitted from the first assembly ring or the second assembly ring.

Description

Luminous fan

Technical Field

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

Background

Modern science and technology industry is developed, and in order to meet the requirements of consumers, manufacturers continuously improve and improve the efficiency of original products, and even put forward products with multiple functions into one.

However, under the intense competition of the market, the functionality of the product is also very different, and if the functionality and the practicability of the product are only improved, the market is difficult to compete in the current market, so that manufacturers are also concerned with improving the design aesthetic feeling of the product, and the product has the functionality at the top of the era and the design style of forever.

Therefore, under the above concept, the conventional fan design is also combined with a light emitting device, such as a Light Emitting Diode (LED) disposed on the fan, and a simple control circuit is used to produce a dazzling light effect, so that the appearance of the fan can be out of the conventional design.

However, if the light emitting directions of the conventional light emitting fans are different, two different molds must be developed to manufacture the light emitting fans respectively under the limitation of the injection molding process, which further increases the cost of the manufacturers for developing the molds. Therefore, how to make the fans with different light emitting directions capable of being manufactured by using the same mold to further reduce the manufacturing cost of the fans is one of the problems to be solved by research and development resources.

Disclosure of Invention

The invention provides a luminous fan, which enables manufacturers to make luminous fans with different luminous forms share the same set of die, thereby enabling the manufacturers to save the die development cost.

The light-emitting fan disclosed by the embodiment of the invention comprises a fan blade frame, a fan blade and a light-emitting component. The fan blade frame comprises a base, a first assembling ring and a second assembling ring. The first assembling ring is arranged on the base in a stacking mode. The second assembling ring is overlapped on the first assembling ring, and the first assembling ring is arranged between the base and the first assembling ring, so that the first assembling ring and the second assembling ring jointly surround an accommodating space. The fan blade is positioned in the containing space and is rotatably arranged on the base. The luminous piece is positioned in the first assembly ring or the second assembly ring. One of the first assembly ring and the second assembly ring is formed by injection molding of plastic with light transmission characteristics. The other of the first assembly ring and the second assembly ring is injection molded from a plastic material having light blocking properties. A light ray emitted by the light-emitting piece is emitted from the first assembly ring or the second assembly ring.

The light-emitting fan disclosed by the other embodiment of the invention comprises a fan blade frame, a fan blade and a light-emitting component. The fan blade frame comprises a base, a first assembling ring and a second assembling ring. The first assembling ring is arranged on the base in a stacking mode. The second assembling ring is overlapped on the first assembling ring, and the first assembling ring is arranged between the base and the first assembling ring, so that the first assembling ring and the second assembling ring jointly surround an accommodating space. The fan blade is positioned in the containing space and is rotatably arranged on the base. The luminous piece is positioned in the first assembly ring or the second assembly ring. The first assembling ring and the second assembling ring are respectively formed by injection molding of plastics with different light transmittance.

According to the luminous fan of the embodiment, the fan frame is divided into the base, the first assembly ring and the second assembly ring, and the first assembly ring is arranged between the base and the second assembly ring, so that manufacturers can manufacture fans with different luminous forms by selecting the plastic for manufacturing the first assembly ring and the plastic for manufacturing the second assembly ring under the condition of sharing the same set of die. Therefore, the cost of few mold development in a manufacturing plant can be saved.

The above description of the present invention and the following description of the embodiments are provided to illustrate and explain the spirit and principles of the present invention and to provide further explanation of the invention as claimed in the appended claims.

Drawings

Fig. 1 is a perspective view of a light-emitting fan according to a first embodiment of the present invention.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is an exploded view from another perspective of fig. 1.

Fig. 4 is a top view of fig. 1.

Fig. 5 is a partial cross-sectional view of fig. 1.

Fig. 6 is a perspective view of a light-emitting fan according to a second embodiment of the present invention.

Fig. 7 is an exploded view of fig. 6.

Fig. 8 is an exploded view from another perspective of fig. 6.

Fig. 9 is a partial cross-sectional view of fig. 6.

Wherein, the reference numbers:

luminous fan

10, 10a

Fan blade holder 100, 100a

Base

110, 110a

First fasteners

111, 111a

First assembly ring

120, 120a

First

inner ring parts

121, 121a

First

outer ring portions

122, 122a

Second snap-

fastener

1221, 1221a

Assembly posts

1222, 1222a

First engagement portions

123, 123a

Light hole 1231a

Second assembly ring

130, 130a

Second

inner ring parts

131, 131a

Second

outer ring portions

132, 132a

Third clip

1321, 1321a

Second engagement portions

133, 133a

Second reinforcing rib 134

Fan blades

200, 200a

Hubs

210, 210a

Top surfaces

211, 211a

Bottom surfaces

212, 212a

The

vanes

220, 220a

Light emitting

member

300, 300a

Annular base plate

310, 310a

Light sources

320, 320a

Shock absorbing pad

400, 400a

Locking

element

500, 500a

Annular light guide 600a

Extension planes L1, L2

Accommodating space S1

First annular groove S2

Second annular groove S3

Detailed Description

The light-emitting fan of the present embodiment includes, for example, a fan blade frame, a fan blade, and a light-emitting element. The fan blade frame comprises a base, a first assembling ring and a second assembling ring. The first assembling ring is arranged on the base in a stacking mode. The second assembling ring is overlapped on the first assembling ring, and the first assembling ring is arranged between the base and the first assembling ring, so that the first assembling ring and the second assembling ring jointly surround an accommodating space. The fan blade is positioned in the containing space and is rotatably arranged on the base. The luminous piece is positioned in the first assembly ring or the second assembly ring. One of the first assembly ring and the second assembly ring is formed by injection molding of plastic with light transmission characteristics. The other of the first assembly ring and the second assembly ring is injection molded from a plastic material having light blocking properties. A light ray emitted by the light-emitting piece is emitted from the first assembly ring or the second assembly ring. Therefore, manufacturers can produce the luminous fans with different luminous effects by using the same mold.

The following description will first describe an embodiment in which the fan blades of the light-emitting fan and the inner ring of the fan frame emit light, and the remaining portions do not emit light. Please refer to fig. 1 to 5. Fig. 1 is a perspective view of a light-emitting fan according to a first embodiment of the present invention. Fig. 2 is an exploded view of fig. 1. Fig. 3 is an exploded view from another perspective of fig. 1. Fig. 4 is a top view of fig. 1. Fig. 5 is a partial cross-sectional view of fig. 1.

The light-emitting fan 10 includes a fan frame 100, a fan blade 200, and a light-emitting element 300.

The fan blade bracket 100 includes a base 110, a first assembly ring 120, and a second assembly ring 130.

The base 110 is made of, for example, a plastic injection molding with light-shielding property, and the material of the base is, for example, Polybutylene terephthalate (PBT), Polycarbonate (PC), or Acrylonitrile Butadiene Styrene (ABS), but not limited thereto. In other embodiments, the base can also be injection molded from a plastic material with light transmission properties.

The first assembling ring 120 is injection molded by plastic with light transmission property, such as transparent/opal Polycarbonate (PC) plastic. The first assembly ring 120 includes a first inner ring portion 121, a first outer ring portion 122 and a first engagement portion 123. A first annular groove S2 is formed between the first inner ring portion 121 and the first outer ring portion 122. The first engagement portion 123 is connected to the first inner ring portion 121 and the first outer ring portion 122, and closes one side of the first annular groove S2. The first inner ring portion 121 and the first outer ring portion 122 are stacked on the base 110.

The second assembling ring 130 is injection-molded by plastic with light-shielding property, and is made of Polybutylene terephthalate (PBT), Polycarbonate (PC) or Acrylonitrile Butadiene Styrene (ABS). The second assembly ring 130 includes a second inner ring portion 131, a second outer ring portion 132, a second engagement portion 133 and a plurality of second reinforcing ribs 134. A second annular groove S3 is formed between the second inner ring portion 131 and the second outer ring portion 132, the second engagement portion 133 and the second reinforcing ribs 134 are respectively located at two opposite sides of the second annular groove S3, and the second reinforcing ribs 134 are stacked on the first engagement portion 123.

In the present embodiment, the base 110 has a plurality of first latches 111. The first outer ring portion 122 of the first assembly ring 120 has a plurality of second snaps 1221. The second outer ring portion 132 of the first assembly ring 120 has a plurality of third snaps 1321. The first fasteners 111 are respectively detachably fastened to one side of the second fasteners 1221, and the third fasteners 1321 are respectively detachably fastened to the other side of the second fasteners 1221. In the embodiment, the base 110, the first assembling ring 120 and the second assembling ring 130 are combined by a snap-fit manner, but not limited thereto. In other embodiments, the base, the first assembly ring and the second assembly ring can be combined by locking and bonding.

The fan blade 200 is located in the accommodating space S1 and includes a hub 210 and a plurality of blades 220. The hub 210 is rotatably disposed on the base 110. The blades 220 are connected to the hub 210. The blades 220 are used for generating air flow when the fan blades 200 rotate relative to the base 110.

The light emitting member 300 includes an annular substrate 310 and a plurality of light sources 320. The annular substrate 310 is located in the first annular groove S2, and the light sources 320 are, for example, light emitting diodes. The light sources 320 are disposed on the annular substrate 310 and located on a side of the annular substrate 310 close to the first inner ring portion 121, so that the light emitted from the light sources 320 is emitted from the first inner ring portion 121 (as shown in a direction a in fig. 4 and 5). In addition, in the embodiment, the annular substrate 310 is used to shield the light emitted from the light source 320 to the second outer ring 132, so as to prevent the light generated by the light source 320 from being emitted from the second outer ring 132.

In addition, the hub 210 has a top surface 211 and a bottom surface 212 opposite to each other. The bottom surface 212 is closer to the base 110 than the top surface 211, and the first assembling ring 120 is disposed between the extending surface L1 of the top surface 211 and the extending surface L2 of the bottom surface 212, so as to further enable the light emitted from the light sources 320 to be emitted toward the fan blade 200 more evenly, thereby beautifying the visual effect of the fan blade 200 when receiving light.

In the present embodiment, the light-emitting fan 10 further includes a plurality of shock absorbing pads 400 and a plurality of locking elements 500, and the first assembling ring 120 further includes a plurality of assembling posts 1222. The assembly posts 1222 are connected to different sides of the first outer ring portion 122, respectively. The shock pads 400 are respectively locked to the assembly posts 1222 by the locking elements 500. In addition, the shock absorbing pads 400 cover the first fastener 111, the second fastener 1221 and the third fastener 1321, respectively, to further beautify the appearance of the light-emitting fan 10.

The embodiment in which the top side of the fan case emits light and the remaining portion does not emit light will be described below. Please refer to fig. 6 to 9. Fig. 6 is a perspective view of a light-emitting fan according to a second embodiment of the present invention. Fig. 7 is an exploded view of fig. 6. Fig. 8 is an exploded view from another perspective of fig. 6. Fig. 9 is a partial cross-sectional view of fig. 6.

The light-emitting fan 10a includes a fan frame 100a, a fan blade 200a and a light-emitting device 300 a.

The fan blade holder 100a includes a base 110a, a first assembly ring 120a, and a second assembly ring 130 a.

The base 110a is made of, for example, a plastic injection molding with light-shielding property, and the material of the base is, for example, Polybutylene terephthalate (PBT), Polycarbonate (PC), or Acrylonitrile Butadiene Styrene (ABS), but not limited thereto. In other embodiments, the base can also be injection molded from a plastic material with light transmission properties.

The first assembling ring 120a is injection-molded by plastic with light-shielding property, and is made of Polybutylene terephthalate (PBT), Polycarbonate (PC) or Acrylonitrile Butadiene Styrene (ABS). The first assembly ring 120a includes a first inner ring portion 121a, a first outer ring portion 122a, and a first engagement portion 123 a. A first annular groove S2 is formed between the first inner ring portion 121a and the first outer ring portion 122 a. The first engagement portion 123a is connected to the first inner ring portion 121a and the first outer ring portion 122a, and closes one side of the first annular groove S2. The first engagement portion 123a has a plurality of light transmission holes 1231 a. The first inner ring portion 121a and the first outer ring portion 122a are stacked on the base 110 a.

The second assembling ring 130a is injection molded by plastic with light transmission property, such as transparent/opal Polycarbonate (PC) plastic. The second assembly ring 130a includes a second inner ring portion 131a, a second outer ring portion 132a and a second engagement portion 133 a. A second annular groove S3 is formed between the second inner ring portion 131a and the second outer ring portion 132 a. The second engagement portion 133a is closed at one side of the second annular groove S3. The second inner ring portion 131a and the second outer ring portion 132a are stacked on the first engaging portion 123a, and the second annular groove S3 and the first annular groove S2 are communicated through the light-transmitting holes 1231 a.

In the present embodiment, the base 110a has a plurality of first latches 111 a. The first outer ring portion 122a of the first assembly ring 120a has a plurality of second snaps 1221 a. The second outer ring portion 132a of the first assembly ring 120a has a plurality of third snaps 1321 a. The first fasteners 111a are respectively detachably fastened to one side of the second fasteners 1221a, and the third fasteners 1321a are respectively detachably fastened to the other side of the second fasteners 1221 a. In the embodiment, the base 110a, the first assembling ring 120a and the second assembling ring 130a are combined by a snap-fit manner, but not limited thereto. In other embodiments, the base, the first assembly ring and the second assembly ring can be combined by locking and bonding.

The fan blade 200a is located in the accommodating space S1a and includes a hub 210a and a plurality of blades 220 a. The hub 210a is rotatably disposed on the base 110 a. The blades 220a are connected to the hub 210 a. The blades 220a are used for generating air flow when the fan blades 200a rotate relative to the base 110 a.

The light emitting member 300a includes an annular substrate 310a and a plurality of light sources 320 a. The annular substrate 310a is located in the first annular groove S2, and the light sources 320a are, for example, light emitting diodes. The light sources 320a are disposed on the annular substrate 310a and located on a side of the annular substrate 310a close to the first inner ring portion 121 a. In addition, the light-emitting fan 10a of the present embodiment further includes an annular light guide 600 a. The annular light guide 600a is located in the second annular groove S3, and the light emitted from the light emitting member 300a is guided by the annular light guide 600a to exit from the second connecting portion 133a (as shown in the direction b of fig. 9).

However, in the embodiment, the design of the second annular groove S3 provided with the annular light guide 600a is not intended to limit the invention. In other embodiments, a single light guide member having a non-circular shape may be disposed in the second annular groove instead, and is located on one side of the fan blade. Or, the second annular groove can be changed into a non-annular multi-light guide piece, and the light guide pieces are respectively positioned on different sides of the fan blade. Or, the second annular groove can be changed into a groove without any light guide part, and the light emitted by the light emitting part is naturally emitted from the second inner ring part, the second outer ring part and the second connecting part of the second assembly ring.

In addition, in the present embodiment, the hub 210a has a top surface 211a and a bottom surface 212a opposite to each other. The bottom surface 212a is closer to the base 110a than the top surface 211 a. The first assembly ring 120a and a part of the second assembly ring 130a are disposed between the extension plane L1 of the top surface 211a and the extension plane L2 of the bottom surface 212a, but not limited thereto, in other embodiments, the second assembly ring may be disposed completely on a side of the extension plane of the top surface away from the base, so as to prevent light leaking from the second inner ring portion from being emitted to the fan blade.

In this embodiment, the light-emitting fan 10a further includes a plurality of shock absorbing pads 400a and a plurality of locking elements 500a, and the first assembly ring 120a further includes a plurality of assembly posts 1222 a. The assembly posts 1222a are respectively connected to opposite sides of the first outer ring portion 122 a. The shock absorbing pads 400a are respectively locked to the assembly posts 1222a by the locking elements 500 a. In addition, the shock absorbing pads 400a cover the first fastener 111a, the second fastener 1221a and the third fastener 1321a, respectively, to further beautify the appearance of the light-emitting fan 10 a.

In the two embodiments, the fan frame is divided into the base, the first assembly ring and the second assembly ring, and the first assembly ring is disposed between the base and the second assembly ring, so that when a manufacturer needs to manufacture a light-emitting fan in which only the inner side of the fan frame and the fan blades can emit light, only the first assembly ring needs to be injection-molded by plastic with light-transmitting property, and the second assembly ring needs to be injection-molded by plastic with light-shielding property. In addition, when a manufacturer needs to manufacture a luminous fan with only the top side of the fan frame emitting light, only the first assembly ring needs to be formed by injection molding of plastic with the light shielding property, and the second assembly ring needs to be formed by injection molding of plastic with the light shielding property, and a new mold does not need to be newly developed. That is, through the design of disassembling the fan frame into the base, the first assembling ring and the second assembling ring, the same set of mold can be shared by manufacturers when manufacturing fans with different light-emitting forms, and further, the cost of mold development is saved.

In the above embodiments, one of the first assembly ring and the second assembly ring is injection molded by plastic with light-transmitting property, and the other one of the first assembly ring and the second assembly ring is injection molded by plastic with light-shielding property, but not limited thereto. In other embodiments, the first assembly ring and the second assembly ring may be respectively injection-molded by plastics with different light transmission characteristics to exhibit a gradual optical effect of gradually increasing brightness or gradually decreasing darkness.

Claims

1. A light-emitting fan, comprising:

a fan blade holder, comprising:

a base;

a first assembling ring, which is stacked on the base; and

the second assembly ring is stacked on the first assembly ring, and the first assembly ring is arranged between the base and the first assembly ring so that the first assembly ring and the second assembly ring jointly surround an accommodating space;

a fan blade, which is positioned in the containing space and can be rotationally arranged on the base; and

a light emitting member positioned within the first assembly ring or the second assembly ring;

one of the first assembly ring and the second assembly ring is formed by injection molding of plastic with light transmission characteristics, the other one of the first assembly ring and the second assembly ring is formed by injection molding of plastic with light shielding characteristics, and a light ray emitted by the light emitting element is emitted from the first assembly ring or the second assembly ring.

2. The light-emitting fan of claim 1, wherein the first assembling ring is formed by injection molding of a plastic material having a light-transmitting property, the second assembling ring is formed by injection molding of a plastic material having a light-blocking property, and the light emitted from the light-emitting member is emitted from the first assembling ring.

3. The luminescent fan according to claim 2, wherein the first assembly ring comprises a first inner ring portion, a first outer ring portion, and a first engaging portion, a first annular groove is formed between the first inner ring portion and the first outer ring portion, the first engaging portion is connected to the first inner ring portion and the first outer ring portion and closes one side of the first annular groove, the first inner ring portion and the first outer ring portion are stacked on the base, the luminescent member is located in the first annular groove, and the second assembly ring is stacked on the first engaging portion.

4. The illumination fan as claimed in claim 3, wherein the illumination member comprises an annular substrate and a plurality of light sources, the annular substrate is disposed in the first annular groove, and the light sources are disposed on the annular substrate and on a side of the annular substrate close to the first inner ring portion, so that the light emitted from the light sources is emitted from the first inner ring portion.

5. The light-emitting fan of claim 3 further comprising a plurality of locking members and a plurality of shock absorbing pads, wherein the first assembly ring further comprises a plurality of assembly posts, the assembly posts are respectively connected to different sides of the first outer ring portion, and the shock absorbing pads are respectively locked to the assembly posts through the locking members.

6. The luminescent fan according to claim 3, wherein the second assembly ring comprises a second inner ring portion, a second outer ring portion, a second engagement portion and a plurality of second reinforcing ribs, a second annular groove is formed between the second inner ring portion and the second outer ring portion, the second engagement portion and the second reinforcing ribs are respectively located at two opposite sides of the second annular groove, and the second reinforcing ribs are stacked on the first engagement portion.

7. The light-emitting fan of claim 6 wherein the base has a plurality of first fasteners, the first outer ring of the first assembly ring has a plurality of second fasteners, the second outer ring has a plurality of third fasteners, the first fasteners are detachably fastened to one side of the second fasteners, and the third fasteners are detachably fastened to the other side of the second fasteners.

8. The illuminating fan as claimed in claim 3, wherein the fan blade comprises a hub and a plurality of blades, the hub is rotatably disposed on the base, the blades are connected to the hub, the hub has a top surface and a bottom surface opposite to the top surface, the bottom surface is closer to the base than the top surface, and the first assembling ring is disposed between the extension surface of the top surface and the extension surface of the bottom surface.

9. The light-emitting fan of claim 1, wherein the first assembly ring is injection molded from a plastic material having light-shielding properties, the second assembly ring is injection molded from a plastic material having light-transmitting properties, and the light emitted from the light-emitting member is emitted from the second assembly ring.

10. The light-emitting fan of claim 9 wherein the first assembly ring comprises a first inner ring portion, a first outer ring portion and a first engaging portion, a first annular groove is formed between the first inner ring portion and the first outer ring portion, the first engaging portion is connected to the first inner ring portion and the first outer ring portion and closes one side of the first annular groove, the first engaging portion has a plurality of light holes, the first engaging portion is stacked on the base, the second assembly ring is stacked on the first inner ring portion and the first outer ring portion, the light-emitting member is located in the first annular groove, and the light emitted by the light-emitting member is emitted from the second assembly ring through the light holes.

11. The luminescent fan according to claim 10, further comprising at least one light guide member, wherein the second assembly ring comprises a second inner ring portion, a second outer ring portion and a second engaging portion, a second annular groove is formed between the second inner ring portion and the second outer ring portion, the second engaging portion is enclosed at one side of the second annular groove, the second inner ring portion and the second outer ring portion are stacked on the first engaging portion, the second annular groove and the first annular groove are communicated through the light holes, the at least one light guide member is located in the second annular groove and located at one side of the fan blade, and the light emitted by the light guide member is emitted from the second engaging portion through the light holes and the at least one light guide member.

12. The illumination fan of claim 11, wherein the at least one light guide member is disposed on different sides of the fan blade.

13. The illumination fan as claimed in claim 10, wherein the illumination member comprises an annular substrate and a plurality of light sources, the annular substrate is disposed in the first annular groove, and the light sources are disposed on the annular substrate and on a side of the annular substrate close to the first inner ring portion.

14. The luminescent fan according to claim 13, further comprising an annular light guide member, wherein the second assembly ring comprises a second inner ring portion, a second outer ring portion and a second engaging portion, a second annular groove is formed between the second inner ring portion and the second outer ring portion, the second engaging portion is sealed at one side of the second annular groove, the second inner ring portion and the second outer ring portion are stacked on the first engaging portion, the second annular groove and the first annular groove are communicated through the light holes, the annular light guide member is located in the second annular groove, and the light emitted by the luminescent member is emitted from the second engaging portion through the annular light guide member.

15. The light-emitting fan of claim 10 further comprising a plurality of locking elements and a plurality of shock-absorbing pads, wherein the first assembly ring further comprises a plurality of assembly posts, the assembly posts are respectively connected to different sides of the first outer ring portion, and the shock-absorbing pads are respectively locked to the assembly posts through the locking elements.

16. The luminescent fan as claimed in claim 15, wherein the base has a plurality of first fasteners, the first outer ring portion of the first assembly ring has a plurality of second fasteners, the second assembly ring has a plurality of third fasteners, the first fasteners are respectively detachably fastened to one side of the second fasteners, and the third fasteners are respectively detachably fastened to the other side of the second fasteners.

17. The illuminated fan of claim 10, wherein the fan blade comprises a hub and a plurality of blades, the hub is rotatably disposed on the base, the blades are connected to the hub, the hub has a top surface and a bottom surface opposite to the top surface, the bottom surface is closer to the base than the top surface, and the second assembly ring is disposed on a side of the extended surface of the top surface away from the base.

18. A light-emitting fan, comprising:

a fan blade holder, comprising:

a base;

a first assembling ring, which is stacked on the base; and

the first assembling ring and the second assembling ring are respectively formed by injection molding of plastics with different light transmittance.