TWI840137B - Partially luminous fan blade and fan thereof - Google Patents

Abstract

A locally luminous fan blade and a fan thereof, the fan blade comprising a light guide bracket, an annular outer cover and a plurality of blades, the light guide bracket forming an axial connection portion, the annular outer cover and the blades forming an integral structure, the annular outer cover and the light guide bracket together forming a hub of the fan blade, the annular outer cover connected to the light guide bracket, the annular outer cover having a light-shielding skirt, the bottom edge of the light-shielding skirt being lower than the bottom edge of the light guide bracket.

Description

Partially luminous fan blade and fan thereof

The present invention relates to a fan blade and a fan thereof, in particular to a fan blade with local light guiding and a fan thereof.

According to the patents disclosed by the patent office, the existing luminous fans include US 10900493B2, TW M537672, CN 217633022, TW M551292, TW202115317, US 2019316769, US 2020208832, and US10585463. The above patents describe the implementation of the existing luminous fans, which mainly use the fan hub and the fan blades as the luminous elements, and some fans even add the technology of fan frame luminescence. However, the existing technology of luminous fans emitting light on the entire surface is prone to glare, and the excessive brilliance effect affects the user experience.

Taking US 10900493B2 as an example, although the luminous fan has an additional light-guiding element on the hub, the light from the light-guiding element is indirectly transmitted to the hub through the light-guiding element, so that the hub produces a more uniform and soft light effect. However, although the specification of US 10900493B2 describes that the fan blades can be made of non-light-transmitting or non-light-guiding materials to prevent light from escaping to the fan blades, in actual implementation, the light of US 10900493B2 cannot be restricted after passing through the hub, resulting in the user being unable to obtain a good localized luminous experience when observing the fan.

The main purpose of the present invention is to solve the problem that conventional fans cannot be separated from the whole-surface lighting technology.

To achieve the above-mentioned purpose, the present invention provides a locally luminous fan blade, comprising a light-guiding bracket, an annular outer sleeve and a plurality of blades, the light-guiding bracket forming an axial connection portion, the annular outer sleeve and the blades forming an integral structure, the annular outer sleeve and the light-guiding bracket together constitute a hub of the fan blade, the annular outer sleeve is connected to the light-guiding bracket, the annular outer sleeve has a shading skirt, and the bottom edge of the shading skirt is lower than the bottom edge of the light-guiding bracket.

In one embodiment, the light guide bracket includes a base, an annular portion integrally formed with the base and connected to the annular jacket, and a receiving space defined by the base and the annular portion, and the axial connection portion is integrally extended from the base and faces the receiving space.

In one embodiment, the annular outer cover includes at least one covering portion contacting an edge of the base portion that does not face the accommodating space.

In one embodiment, the fan blade includes at least one light shielding cover stacked on the light guide bracket.

In one embodiment, the light guide bracket includes a base portion and an annular portion formed integrally with the base portion and connected to the annular outer sleeve, and the base portion has an assembly area for assembling the light shielding cover.

In one embodiment, the light guide bracket has a light guide inclined surface arranged at the connection between the base portion and the annular portion.

In one embodiment, the end of the annular portion away from the base portion includes at least one light incident inclined surface.

In one embodiment, the light guide bracket has a plurality of ribs spaced apart on a side of the annular portion facing the accommodating space.

In one embodiment, the shading skirt has an inclined surface protruding from the bottom edge of the light guide bracket.

In addition to the above, the present invention also provides a fan, comprising a fan frame, a driving source arranged on the fan frame, a fan blade assembled with the driving source, and at least one first light source, the structure of the fan blade is as described in the previous paragraph of this article, and the first light source is arranged on the fan frame and faces the light guide bracket.

In one embodiment, the fan has a light guide ring disposed on the fan frame and directly observable from the fan frame, and at least one second light source facing the light guide ring.

In one embodiment, the fan frame includes at least two half shells assembled to each other.

According to the above-mentioned invention content, compared with the conventional technology, the present invention has the following characteristics: the hub of the present invention is composed of the light guide bracket and the annular jacket. When the fan blade is irradiated by the light source, the light guide bracket produces a luminous effect, and the annular jacket provides a function of blocking light leakage, thereby enabling the fan blade to produce a local luminous effect.

The detailed description and technical contents of the present invention are as follows with reference to the accompanying drawings:

Please refer to Figures 1 to 4. The present invention provides a fan blade 10, which has a local light-guiding effect. Referring to Figures 5 and 6, the fan blade 10 can be used in combination with a driving source 20, at least one first light source 41 and a fan frame 30 to form a fan 100. In order to facilitate readers to understand the technology, the fan blade 10 is first described below. The fan blade 10 includes a light-guiding bracket 11, an annular outer cover 13 and a plurality of blades 14. The light-guiding bracket 11 is formed by injection. The light-guiding bracket 11 has a light-guiding function, and at least one diffuser material and at least one light-guiding agent material can be added during the preparation process, so that the light-guiding bracket 11 presents a soft light-emitting effect after receiving light projection. The light guide bracket 11 is formed with an axis 111 for connecting with the driving source 20. When the driving source 20 is activated, the light guide bracket 11 is driven to rotate, thereby rotating the fan blade 10. In one embodiment, the light guide bracket 11 has an opening 110 connected to the axis 111 and exposed on the surface of the light guide bracket 11.

The annular outer cover 13 is connected to the light guide bracket 11, and together with the light guide bracket 11, it forms a hub 101 of the fan blade 10. The annular outer cover 13 does not have light transmission or light guiding functions. In addition, in order to prevent light leakage from the light guide bracket 11, the annular outer cover 13 has a light shielding skirt 132. The bottom edge of the light shielding skirt 132 is lower than the bottom edge of the light guide bracket 11. The light shielding skirt 132 makes the length of the annular outer cover 13 (such as the label 133) greater than the length of the annular portion 113 (such as the label 122), thereby achieving the purpose of blocking light. In addition, the blades 14 serve as wind generators when the fan blades 10 rotate. The blades 14 are connected to the annular outer cover 13 and are an integral structure with the annular outer cover 13. The blades 14 also do not have light-transmitting or light-guiding functions.

Continuing from the above, please refer to Figure 7. During implementation, the fan blade 10 receives the light from the at least one first light source 41, and the fan blade 10 allows the light to enter the light guide bracket 11 and transmit therethrough, while the annular jacket 13 limits the penetration of light from the light guide bracket 11. At the same time, the annular jacket 13 prevents light leakage with the shading skirt 132. In this way, when the user observes from one side of the fan blade 10, he will find that the light guide bracket 11 can produce a soft light effect, while the annular jacket 13 and the blades 14 do not produce a luminous effect. Furthermore, in order to help enhance the function of the shading skirt 132 in preventing light leakage, in one embodiment, the shading skirt 132 has a slope 130 at the bottom edge, and the slope 130 protrudes from the light guide bracket 11 and helps increase the light blocking effect of the shading skirt 132.

In addition, please refer to Figures 2 to 4 again. In one embodiment, the fan blade 10 has at least one light shielding cover 15. The at least one light shielding cover 15 does not have a light transmission or light guiding function, and is superimposed on the light guiding bracket 11 to provide a light blocking function. In one embodiment, the area of the at least one light shielding cover 15 is smaller than the light guiding bracket 11. The at least one light shielding cover 15 partially shields the light guiding bracket 11, so that the light guiding bracket 11 can present a ring-shaped lighting effect, as shown by the number 80 in Figure 8. In one embodiment, the at least one shading cover plate 15 may be a decorative plate. For example, the at least one shading cover plate 15 may be provided with at least one decorative pattern or at least one corporate identification logo. In another example, the at least one shading cover plate 15 may be provided with at least one hollowing out, so that the fan blade 10 can adjust the luminous area of the hub 101 according to the needs. Thus, the fan blade 10 of the present invention can provide a cleaner local luminous effect.

As mentioned above, in one embodiment, the light guide support 11 includes a base portion 112, an annular portion 113 integrally formed with the base portion 112, and a receiving space 114 defined by the base portion 112 and the annular portion 113, wherein the base portion 112 is connected to the axial portion 111, and the axial portion 111 is integrally extended from the base portion 112 and faces the receiving space 114. Furthermore, the base portion 112 is connected to the light shielding cover 15, and the base portion 112 has an assembly area 118 for assembling the light shielding cover 15, and the assembly area 118 is formed by at least one of the following groups: a groove 119, and at least one protrusion 120. Taking the groove 119 as an example, the groove 119 provides a space for accommodating the light shielding cover 15, and the groove wall of the groove 119 surrounds the light shielding cover 15 and limits the assembly position of the light shielding cover 15; taking the at least one protrusion 120 as an example, the at least one protrusion 120 is extended from the base 112 toward the side facing the light shielding cover 15, and the at least one protrusion 120 is arranged along the light shielding cover 15 in a non-continuous manner or a continuous manner.

Continuing, the annular portion 113 is connected to the annular outer sleeve 13, and the annular portion 113 provides the annular outer sleeve 13 with a secondary injection molding based thereon. Specifically, the light guide bracket 11 and the annular outer sleeve 13 are injection molded using two molds during the preparation process. The light guide bracket 11 is formed in a first mold with a first material. After the preparation of the light guide bracket 11 is completed, it is rotated 180 degrees and placed in a second mold. The annular outer sleeve 13 and the blades 14 are made of a second material and are injection molded on the annular portion 113. In one embodiment, the first material may be polycarbonate (PC), and the second material may be liquid crystal polymer (LCP). In one embodiment, the present invention allows the annular jacket 13 to be stably disposed on the annular portion 113. The annular jacket 13 includes at least one covering portion 131 that contacts the edge of one side of the base portion 112 that does not face the accommodating space 114. The covering portion 131 is located at the connection between the base portion 112 and the annular portion 113, and provides the effect of stably connecting the annular jacket 13 and the light guide bracket 11. Furthermore, in another embodiment, the light guide bracket 11 has a plurality of ribs 115 spaced apart on the annular portion 113, the ribs 115 face the accommodating space 114, and connect the annular portion 113 and the base portion 112, the ribs 115 provide the light guide bracket 11 with a structural reinforcement function, and assist in demolding the light guide bracket 11.

Please refer to FIG. 2 to FIG. 4 . In order to provide a light-guiding effect, in one embodiment of the present invention, the annular portion 113 has an extension line 121, and the at least one protrusion 120 (or the groove wall of the groove 119) is not on the extension line 121. More specifically, the light-guiding support 11 has a light-guiding inclined surface 116 disposed at the connection between the base portion 112 and the annular portion 113. The light-guiding inclined surface 116 is used to refract light. For example, please refer to FIG. 7 , assuming that the annular portion 113 provides light to be transmitted along a first path 70, and the base portion 112 provides light to be transmitted along a second path 71, the light-guiding inclined surface 116 deflects the light from the first path 70 and transmits it along the second path 71 instead. In another embodiment, the light guide bracket 11 assists light rays to enter the annular portion 113. The annular portion 113 includes at least one light-entering inclined surface 117 at one end away from the base portion 112. The light-entering inclined surface 117 is inclined to face the accommodating space 114. The light-entering inclined surface 117 assists in increasing the area of the annular portion 113 projected by light rays, so that the annular portion 113 can surely receive light rays. In another embodiment, the ribs 115 match the slope of the light-entering inclined surface 117 at one end away from the base portion 112.

Returning to the fan 100, please refer to Figures 5 to 7. The fan 100 of the present invention is implemented in conjunction with the aforementioned fan blade 10 technology. In addition, the fan 100 is provided with the fan frame 30 for assembling the fan blade 10, and the fan frame 30 has an air guide channel 31, and the air guide channel 31 allows the fan blade 10 to be disposed therein. In addition, the drive source 20 is disposed on the fan frame 30 and is connected to the axial connection portion 111 of the fan blade 10. The drive source 20 drives the fan blade 10 to rotate after receiving electricity. In one embodiment, the drive source 20 includes a stator 21 and a rotor 22. Furthermore, the at least one first light source 41 is disposed on the fan frame 30 and faces the light guide bracket 11. The at least one first light source 41 is located on the side of the light guide bracket 11 where the annular portion 113 is provided. It should be noted that the at least one first light source 41 of the present invention does not limit the lighting mode. The at least one first light source 41 can have different lighting effects, such as changes in light color, flashing frequency, etc., according to the settings of the fan 100 itself, or the fan 100 transmits at least one control signal (not shown in the figure) emitted by at least one control source (not shown in the figure, such as a computer) through at least one connector 104.

As mentioned above, when the fan 100 is implemented, the at least one first light source 41 is powered on and projects light toward the annular portion 113, and the annular portion 113 provides light to enter, so that the light guide bracket 11 produces a light effect. When the user observes the fan 100, it can be found that only a part of the fan 100 produces a light effect. In another embodiment, the light shielding skirt 132 of the annular outer cover 13 limits the light projection range of the at least one first light source 41 to prevent light leakage, and when the user observes the fan 100, it can be found that only the light guide bracket 11 of the fan 100 has light changes.

As mentioned above, the fan 100 of the present invention changes the technology of the conventional fan emitting light on the entire surface, and through the design of the fan blade 10, the fan 100 can produce a cleaner localized luminous effect (as shown by the number 80 in FIG. 8 ) when it is started, thereby reducing the problem of excessive glare of conventional fans. On the other hand, when the present invention is implemented, the light guide bracket 11 is used to produce light changes, and the light guide bracket 11 allows the light to penetrate evenly therein, thereby providing a soft luminous effect. Compared with conventional fans, the present invention can produce a visual experience different from the past.

Referring again to FIGS. 5 to 7 , in one embodiment, the fan 100 further includes at least one circuit board 50, the circuit board 50 provides the at least one first light source 41 and the drive source 20 for installation, and the circuit board 50 is located on the fan frame 30 and faces the light guide bracket 11. Further, the fan frame 30 has a frame body 32, a seat 33 on which the circuit board 50 is installed, and at least one assembly rib 34 connected to the seat 33, the frame body 32 is formed with the wind guide channel 31, and the seat 33 is arranged in the wind guide channel 31 and connected to the drive source 20, and the at least one assembly rib 34 connects the frame body 32 and the seat 33 to fix the seat 33 in the wind guide channel 31. In one embodiment, the support seat 33 has a connecting post 331 connected to the driving source 20.

On the other hand, in order to enhance the radiant effect of the fan 100, the present invention comprises a light guide ring 60 disposed on the fan frame 30, and at least one second light source 42 facing the light guide ring 60. Furthermore, the light guide ring 60 is exposed on the fan frame 30 and can be directly observed from the fan frame 30, and the light guide ring 60 has a light guide function. At least one diffuser material and at least one light guide material are added to the light guide ring 60 during the preparation process, so that the light guide ring 60 presents a soft radiant effect after receiving the light projected by the second light source 42, and the fan frame 30 produces a local radiant effect, as shown by reference numeral 81 in FIG. 8 . As can be seen from FIG. 8 , the fan 100 of the present invention not only has a portion of the fan blade 10 having a luminous effect, but also a portion of the fan frame 30 can provide a luminous effect, as shown by reference numeral 81 .

Furthermore, the fan frame 30 of the present invention comprises at least two half shells 35 assembled with each other, and the at least two half shells 35 are assembled to provide the second light source 42 and the light guide ring 60 to be installed thereon. In one embodiment, the fan frame 30 has an installation space 36 for providing the light guide ring 60 to be installed. The installation space 36 is formed by the at least two half shells 35 and provides the second light source 42 to be installed. The installation space 36 is not closed by the two half shells 35 after assembly, and it can be observed from the surface of the fan frame 30 that the installation space 36 is connected to the air guide channel 31.

Continuing from above, please refer to FIG. 7 . In one embodiment, the light guide ring 60 has a shielded portion 61 shielded by the fan frame 30, and a raised portion 62 extending from the shielded portion 61 and raised relative to the shielded portion 61. The shielded portion 61 is disposed in the installation space 36 and faces the second light source 42. The shielded portion 61 receives light from the second light source 42 and transmits it to the raised portion 62. The raised portion 62 is disposed in the installation space 36 and is not shielded by the fan frame 30. The raised portion 62 is exposed on the surface of the fan frame 30. The raised portion 62 receives light from the shielded portion 61 and produces a luminous effect. The raised portion 62 allows the user to observe the light changes of the light guide ring 60 from the surface of the fan frame 30.

The above is merely a preferred embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the scope of the patent application of the present invention should still fall within the scope of the patent of the present invention.

100: fan 101: hub 104: connector 10: fan blade 11: light guide bracket 110: opening 111: shaft connection 112: base 113: ring 114: storage space 115: rib 116: light guide slope 117: light entrance slope 118: assembly area 119: groove 120: bump 121: extension line 122: length 13: ring jacket 130: slope 131: cover 132: light shielding skirt 133: length 14: blade 15: light shielding cover 20: drive source 21: stator 22: rotor 30: Fan frame 31: Air guide channel 32: Frame body 33: Support seat 331: Connecting column 34: Assembly rib 35: Half shell 36: Installation space 41: First light source 42: Second light source 50: Circuit board 60: Light guide ring 61: Shielded part 62: Raised part 70: First path 71: Second path 80: Lighting position 81: Lighting position

Figure 1 is a three-dimensional schematic diagram of a fan blade of an embodiment of the present invention. Figure 2 is a schematic diagram of the structural decomposition of a fan blade of an embodiment of the present invention (I). Figure 3 is a schematic diagram of the structural decomposition of a fan blade of an embodiment of the present invention (II). Figure 4 is a schematic diagram of the structural cross-section of a fan blade of an embodiment of the present invention. Figure 5 is a three-dimensional schematic diagram of a fan of an embodiment of the present invention. Figure 6 is a schematic diagram of the structural decomposition of a fan of an embodiment of the present invention. Figure 7 is a schematic diagram of the structural cross-section of a fan of an embodiment of the present invention. Figure 8 is a schematic diagram of the implementation of a fan of an embodiment of the present invention.

101: Department of the hindquarters

10: Fan blades

11: Light guide bracket

13: Ring coat

131: Coating part

14: Leaves

15: Shade cover

Claims (10)

A partially luminous fan blade comprises: a light guide bracket, comprising a base, an annular portion formed integrally with the base, a containing space defined by the base and the annular portion, an axial portion extending integrally from the base and facing the containing space, and a plurality of ribs arranged at intervals on a side of the annular portion facing the containing space; and an annular outer sleeve, which is an integral structure with a plurality of blades, the annular outer sleeve and the light guide bracket together form a hub of the fan blade, the annular outer sleeve is connected to the annular portion of the light guide bracket, and the annular outer sleeve has a light-shielding skirt, the bottom edge of the light-shielding skirt is lower than the bottom edge of the light guide bracket. The locally luminous fan blade as described in claim 1, wherein the annular outer cover includes at least one covering portion that contacts the edge of the base portion that does not face the accommodating space. A locally luminous fan blade as described in any one of claim 1 to 2, wherein the fan blade comprises at least one light shielding cover stacked on the light guide bracket. A locally luminous fan blade as described in claim 3, wherein the base has an assembly area for assembling the sunshade cover. The locally luminous fan blade as described in claim 4, wherein the light guide bracket has a light guide slope disposed at the junction of the base portion and the annular portion. A locally luminous fan blade as described in claim 5, wherein the end of the annular portion away from the base portion includes at least one light-entering inclined surface. A locally luminous fan blade as described in any one of claim 1 to 2, wherein the light-shielding skirt has a slope protruding from the bottom edge of the light guide bracket. A fan comprises: a fan frame; a driving source disposed on the fan frame; a fan blade, as described in any one of claims 1 to 7, the fan blade is assembled with the driving source; and at least one first light source, disposed on the fan frame and facing the light guide bracket. A fan as described in claim 8, wherein the fan has a light guide ring disposed on the fan frame and directly observable from the fan frame, and at least one second light source facing the light guide ring. A fan as described in claim 9, wherein the fan frame comprises at least two half shells assembled to each other.