TWI674362B - Glare cooling fan and its light guide fan wheel - Google Patents

Abstract

The invention relates to a glare radiating fan and a light guide fan wheel thereof. The glare cooling fan includes a frame, a circuit board, a stator, and a light guide fan wheel. The frame has a base and a shaft tube portion, and the shaft tube portion is protruded from the base. The circuit board is disposed on the base, the circuit board has a plurality of light emitting elements, the light emitting elements are located on the periphery of the shaft tube portion, and the light emitting elements are arranged at intervals. The stator is sleeved on the shaft tube portion of the frame, and the stator is electrically connected to the circuit board. The light guide fan wheel is arranged in the frame body. The light guide fan wheel includes a light guide wheel hub, a plurality of light guide blades, and a first opaque layer. The light guide hub has an outer peripheral surface and a bottom light incident surface, and the bottom light incident surface faces the light emitting elements. The light guide blades are connected to the outer peripheral surface of the light guide hub. Each light guide blade has an upper surface, and the upper surface is provided with an upper shielding area and an upper light emitting area. The first opaque layer covers the upper shielding area of each of the light guide blades.

Description

Glare cooling fan and light guide fan wheel

The present invention relates to a fan and a fan wheel thereof, and more particularly, to a glare cooling fan and a light guide fan wheel thereof.

It is known that in order to produce a luster change effect, a cooling fan is generally directly arranged on a side wall of a fan frame. However, the above-mentioned conventional structural configuration can only produce a brilliance change effect, and cannot make the fan wheel produce a glare effect with a special shape or shape. In addition, it is known that when the light-emitting element is configured, how to improve the use efficiency of the light source is not considered, resulting in a large loss of the light source.

Therefore, it is necessary to provide an innovative and progressive glare cooling fan and its light guide fan to solve the above problems.

In one embodiment, a glare cooling fan includes a frame, a circuit board, a stator, and a light guide fan wheel. The frame has a base and a shaft tube portion, and the shaft tube portion is protruded from the base. The circuit board is disposed on the base, the circuit board has a plurality of light emitting elements, the light emitting elements are located on the periphery of the shaft tube portion, and the light emitting elements are arranged at intervals. The stator is sleeved on the shaft tube portion of the frame, and the stator is electrically connected to the circuit board. The light guide fan wheel is arranged in the frame body. The light guide fan wheel includes a light guide wheel hub, a plurality of light guide blades, and a first opaque layer. The light guide hub has an outer peripheral surface and a bottom light incident surface, and the bottom light incident surface faces the light emitting elements. The light guide blades are connected to the outer peripheral surface of the light guide hub. Each light guide blade has an upper surface, and the upper surface is provided with an upper shielding area and an upper light emitting area. The first opaque layer covers the upper shielding area of each of the light guide blades.

In one embodiment, a light guide fan wheel includes a light guide hub, a plurality of light guide blades, and a first opaque layer. The light guide hub has an outer peripheral surface and a bottom light incident surface. The light guide blades are connected to the outer peripheral surface of the light guide hub. Each light guide blade has an upper surface, and the upper surface is provided with an upper shielding area and an upper light emitting area. The first opaque layer covers the upper shielding area of each of the light guide blades.

FIG. 1 shows an exploded perspective view of the glare cooling fan according to the present invention. FIG. 2 shows another perspective exploded view of the glare cooling fan according to the present invention. FIG. 3 is a three-dimensional assembled view of the glare cooling fan according to the present invention. With reference to FIG. 1, FIG. 2 and FIG. 3, the glare cooling fan 1 of the present invention includes a frame 10, a circuit board 20, a stator 30, and a light guide fan wheel 40.

The frame 10 has an inner peripheral wall 10S, a base 11 and a shaft tube portion 12. The shaft tube portion 12 is protruded from the base 11.

FIG. 4 shows a combined view of a stator, a circuit board and a frame of the present invention. With reference to FIGS. 1 and 4, the circuit board 20 is disposed on the base 11, and the circuit board 20 has a plurality of light emitting elements 21. The light emitting elements 21 are located on the periphery of the shaft tube portion 12, and the light emitting elements 21 are arranged at intervals. In an embodiment, the circuit board 20 may have a plurality of compensation light-emitting elements 22, each of which is disposed between two adjacent light-emitting elements 21, and preferably, the light emitting directions of the compensation light-emitting elements 22 It is oriented toward the inner peripheral wall 10S of the frame body 10 to compensate for the lateral luminous brightness. In one embodiment, the light-emitting elements 21 and the compensation light-emitting elements 22 can be red, green, blue, white, or other colored LEDs, or LEDs with multiple colored lights (such as RGB).

The stator 30 is sleeved on the shaft tube portion 12 of the frame body 10, and the stator 30 is electrically connected to the circuit board 20.

Referring again to FIG. 1, FIG. 2 and FIG. 3, the light guide fan wheel 40 is disposed in the frame body 10. The light guide fan wheel 40 includes a light guide hub 41, a plurality of light guide blades 42, and a first opaque lens. The light layer 43, a second opaque layer 44, a ring-shaped magnetic pole 45 and a rotating shaft 46.

FIG. 5 shows a combined sectional view of the glare cooling fan of the present invention. As shown in FIG. 1, FIG. 2 and FIG. 5, the light guide hub 41 has an outer peripheral surface 41C, a bottom light incident surface 41S, a top surface 41T, and a plurality of light guide grooves 41U. The bottom light incident surface 41S faces the light emitting elements 21. The top surface 41T is opposite to the bottom light incident surface 41S. The light guide grooves 41U are recessed in the bottom light incident surface 41S, and the light guide grooves 41U are arranged in an annular space.

In addition, the light-guiding hub 41 has a light-guiding outer ring wall 411 and a light-guiding inner ring wall 412. A gap G is formed between the light-guiding outer ring wall 411 and the light-guiding inner ring wall 412. In this embodiment, the light guide grooves 41U are located between the light guide outer ring wall 411 and the light guide inner ring wall 412, and the light emitting elements 21 correspond to the light guide grooves 41U.

In this embodiment, the light emitting direction of the light emitting elements 21 is toward the bottom light incident surface 41S of the light guide hub 41, and the light emitted by the light emitting elements 21 will enter the bottom light incident surface 41S and The light guide grooves 41U. In addition, in this embodiment, the bottom light incident surface 41S includes the end faces on the light guide outer ring wall 411 and the end faces on the light guide inner ring wall 412 on both sides of the notch of the light guide grooves 41U. (That is, the end faces indicated by the two marked arrows of 41S in Figure 2).

Referring to FIG. 6, a schematic diagram of a light guide fan wheel according to another embodiment of the present invention is shown. In another embodiment, the light guide hub 41 may only have a light guide groove 41U, the light guide groove 41U is recessed in the bottom light incident surface 41S, and the light guide groove 41U is located on the light guide outer ring wall 411 And the light guide inner ring wall 412. Preferably, the light guide groove 41U is annular.

FIG. 7 shows a top view of the light guide fan wheel (excluding the first opaque layer) of the present invention. With reference to FIG. 1, FIG. 2 and FIG. 7, the light guide blades 42 are connected to the outer peripheral surface 41C of the light guide hub 41, and preferably, the light guide blades 42 are connected to the light guide hub 41 Light outer ring wall 411.

In this embodiment, the light-guiding hub 41 and the light-guiding blades 42 are integrally formed by using a light-guiding material. The light-guiding material is a material that can transmit, reflect, refract, and scatter light, such as polycarbonate. (Polycarbonate, PC) or Polymethyl methacrylate (PMMA).

FIG. 8 shows a bottom view of the light guide fan wheel (excluding the second opaque layer) of the present invention. With reference to FIG. 1, FIG. 7 and FIG. 8, each of the light guide blades 42 has an upper surface 421, a lower surface 422 and a plurality of side edges 42F. The upper surface 421 is provided with an upper shielding region 421A and an upper light emitting region 421B. The shape of the upper light emitting region 421B can be adjusted as required. The lower surface 422 is provided with a lower shielding region 422A and a lower light emitting region 422B, the lower light emitting region 422B corresponds to the upper light emitting region 421B, and the shape of the lower light emitting region 422B and the shape of the upper light emitting region 421B may be Are the same or different. In this embodiment, the upper light emitting region 421B and the lower light emitting region 422B are in a tapered arc shape, so that when the light guide fan 40 rotates, a ring-shaped glare can be generated, and the The number of the upper light emitting area 421B and the lower light emitting area 422B may be single or multiple to generate a single-ring or multiple-ring glare. In an embodiment, the shape pattern of the upper light emitting area 421B and the lower light emitting area 422B may be a pattern, a symbol, or a character.

FIG. 9 shows a top view of the light guide fan wheel of the present invention. With reference to FIG. 1, FIG. 7 and FIG. 9, the first opaque layer 43 covers the upper shielding area 421A of each of the light guide vanes 42, and preferably, the first opaque layer 43 also covers The top surface 41T and the outer peripheral surface 41C of the light guide hub 41. In an embodiment, the top surface 41T of the light guide hub 41 may be provided with a light emitting area and a shielding area. The first opaque layer 43 may cover only the shielding area of the top surface 41T and pass through the top surface. The light emitting area of 41T produces a glare with a special shape or shape. In an embodiment, the first opaque layer 43 may also cover the side edges 42F of each of the light guide blades 42.

In one embodiment, the first opaque layer 43 may cover the upper shielding area 421A and the upper light emitting area 421B of each of the light guide blades 42, and then remove the covering with laser engraving. The first opaque layer 43 of the upper light emitting region 421B is exposed to expose the upper light emitting region 421B.

In this embodiment, the material of the first opaque layer 43 is a light-absorbing material or a reflective material to prevent light from penetrating the upper shielding region 421A. In one embodiment, the state of the first opaque layer 43 may be a spray paint layer, a paint layer, a tape layer, or a sticker layer.

FIG. 10 shows a bottom view of the light guide fan wheel of the present invention. As shown in FIG. 2, FIG. 8 and FIG. 10, the second opaque layer 44 covers the lower shielding area 422A of each of the light guide blades 42. In an embodiment, the second opaque layer 44 may cover the lower shielding area 422A and the lower light emitting area 422B of each of the light guide blades 42, and then cover the area by laser engraving. The second opaque layer 44 of the lower light emitting region 422B is described to expose the lower light emitting region 422B.

In one embodiment, the second opaque layer 44 can cover the side edges 42F of each of the light guide blades 42.

In this embodiment, a material of the second opaque layer 44 is a light-absorbing material or a light-reflecting material to prevent light from penetrating the lower shielding area 422A. In one embodiment, the state of the second opaque layer 44 may be a spray paint layer, a paint layer, a tape layer, or a sticker layer.

Referring again to FIG. 2, FIG. 5 and FIG. 10, the ring-shaped magnetic pole 45 is disposed in the light guide hub 41, one end 46E of the rotation shaft 46 is connected to the light guide hub 41, and the rotation shaft 46 is pivoted on the shaft tube portion 12 .

Referring to FIG. 11, a light guide path diagram of a light guide fan wheel of the glare cooling fan according to the present invention is shown. The light R emitted by the light-emitting elements 21 is first incident on the bottom light incident surface 41S of the light guide hub 41 and the light guide grooves 41U. After that, the light R passes through the light-guiding grooves 41U, the light-guiding inner ring wall 412, and the light-guiding outer ring wall 411 after reflection and refraction, and then enters the inside of the light-guiding blades 42. Finally, the light R will emit light through the upper light emitting area 421B and the lower light emitting area 422B of each of the light guide blades 42 to achieve a glare effect with a special shape or shape.

In addition, the light guide hub 41 and the light guide blade 42 of the present invention can improve the use efficiency of the light source, increase the glare brightness, and reduce the loss of the light source.

The above embodiments are only for explaining the principle of the present invention and its effects, and not for limiting the present invention. Therefore, those skilled in the art can modify and change the above embodiments without departing from the spirit of the present invention. The scope of rights of the present invention should be listed in the scope of patent application described later.

1‧‧‧ Glare cooling fan

10‧‧‧Frame

10S‧‧‧Inner peripheral wall

11‧‧‧ base

12‧‧‧ Shaft Tube Department

20‧‧‧Circuit Board

21‧‧‧Light-emitting element

22‧‧‧Compensated light emitting element

30‧‧‧ stator

40‧‧‧light guide fan wheel

41‧‧‧light guide wheel

41C‧‧‧outer surface

41S‧‧‧Bottom light entrance

41T‧‧‧Top

41U‧‧‧light guide

411‧‧‧light guide outer ring wall

412‧‧‧light guide inner ring wall

42‧‧‧light guide blade

421‧‧‧upper surface

421A‧‧‧ Upper sheltered area

421B‧‧‧Uplight area

422‧‧‧ lower surface

422A‧‧‧ lower shaded area

422B‧‧‧ Lower light area

42F‧‧‧Side edge

43‧‧‧first opaque layer

44‧‧‧ second opaque layer

45‧‧‧ Toroidal pole

46‧‧‧Shaft

46E‧‧‧One end of the shaft

G‧‧‧Pitch

R‧‧‧light

FIG. 1 shows an exploded perspective view of the glare cooling fan according to the present invention.

FIG. 2 is a three-dimensional exploded view of the light guide fan wheel of the glare cooling fan according to the present invention at different viewing angles.

FIG. 3 is a three-dimensional assembled view of the glare cooling fan according to the present invention.

FIG. 4 shows a combined view of a stator, a circuit board and a frame of the present invention.

FIG. 5 shows a combined sectional view of the glare cooling fan of the present invention.

FIG. 6 is a schematic diagram of a light guide fan wheel according to another embodiment of the present invention.

FIG. 7 shows a top view of the light guide fan wheel (excluding the first opaque layer) of the present invention.

FIG. 8 shows a bottom view of the light guide fan wheel (excluding the second opaque layer) of the present invention.

FIG. 9 shows a top view of the light guide fan wheel of the present invention.

FIG. 10 shows a bottom view of the light guide fan wheel of the present invention.

FIG. 11 shows a light guide path diagram of a light guide fan wheel of the glare heat dissipation fan according to the present invention.

Claims (45)

A glare cooling fan, comprising: a frame body with a base and a shaft tube portion, the shaft tube portion is protrudingly arranged on the base; a circuit board is arranged on the base, the circuit board has a plurality of light emitting Elements, the light-emitting elements are located at the periphery of the shaft tube portion, and the light-emitting elements are arranged at intervals; the stator is sleeved on the shaft tube portion of the frame, and the stator is electrically connected to the circuit board; and a A light guide fan wheel is provided in the frame. The light guide fan wheel includes: a light guide hub having an outer peripheral surface and a bottom light incident surface, the bottom light incident surface facing the light emitting elements; a plurality of light guide blades , Connected to the outer peripheral surface of the light guide hub, each of the light guide blades has an upper surface and a lower surface, the upper surface is provided with an upper shielding area and an upper light emitting area, and the lower surface is provided with a lower shielding area and a lower light emitting area Area; a first opaque layer covering the upper shielding area of each of the light guide blades; and a second opaque layer covering the lower shielding area of each of the light guide blades The glare cooling fan according to claim 1, wherein the light guide hub has a plurality of light guide grooves, the light guide grooves are recessed on the light entrance surface of the bottom, and the light guide grooves are arranged in a circular interval. The glare cooling fan according to claim 2, wherein the light guide hub has a light guide outer ring wall and a light guide inner ring wall, the light guide grooves are located between the light guide outer ring wall and the light guide inner ring wall between. The glare cooling fan according to claim 1, wherein the light guide hub has a light guide groove, the light guide groove is recessed on the light entrance surface of the bottom, and the light guide groove is ring-shaped. The glare cooling fan according to claim 4, wherein the light guide hub has a light guide outer ring wall and a light guide inner ring wall, and the light guide groove is located between the light guide outer ring wall and the light guide inner ring wall . The glare cooling fan according to claim 1, wherein the light guide hub has a light guide outer ring wall and a light guide inner ring wall, and there is a gap between the light guide outer ring wall and the light guide inner ring wall, the Equal light guide blades are connected to the light guide outer ring wall of the light guide hub. The glare cooling fan according to claim 1, wherein each of the light guide blades has a plurality of side edges, and the first opaque layer covers the side edges. The glare cooling fan according to claim 1, wherein the light guide hub has a top surface, the top surface is opposite to the bottom light incident surface, and the first opaque layer further covers the top surface and the periphery of the light guide hub surface. The glare cooling fan according to claim 1, wherein the material of the first opaque layer is a light absorbing material or a reflective material. The glare cooling fan according to claim 1, wherein the upper light-emitting area is in the shape of a tapered arc band. The glare cooling fan according to claim 1, wherein the number of the upper light-emitting areas is single or multiple. The glare cooling fan according to claim 1, wherein the shape and state of the upper light emitting area are patterns, symbols or characters. The glare cooling fan according to claim 1, wherein the first opaque layer is first covered on the upper light emitting area of each light guide blade, and then the laser light engraving method is used to remove the covering on the upper light emitting area The first opaque layer exposes the upper light-emitting area. The glare cooling fan according to claim 1, wherein each of the light guide blades has a plurality of side edges, and the second opaque layer covers the side edges. The glare cooling fan according to claim 1, wherein the material of the second opaque layer is a light absorbing material or a reflective material. The glare heat dissipation fan according to claim 1, wherein the lower light exit area is in the shape of a tapered arc band. The glare cooling fan according to claim 1, wherein the number of the lower light emitting areas is single or multiple. The glare cooling fan according to claim 1, wherein the shape and state of the lower light emitting area are patterns, symbols or characters. The glare cooling fan according to claim 1, wherein the second opaque layer first covers the lower light emitting area of each light guide blade, and then removes the light covering the lower light emitting area by laser engraving The second opaque layer exposes the lower light exit area. The glare cooling fan according to claim 1, wherein the light guide hub and the light guide blades are integrally injection molded with a light guide material. The glare cooling fan according to claim 1, wherein the light guide fan wheel further includes an annular magnetic pole and a rotating shaft, the annular magnetic pole is disposed in the light guiding hub, one end of the rotating shaft is connected to the light guiding hub, and the The rotating shaft is pivotally arranged on the shaft tube portion. The glare cooling fan according to claim 1, wherein the light-emitting directions of the light-emitting elements are toward the light incident surface of the bottom of the light guide hub. A glare cooling fan, comprising: a frame body with a base and a shaft tube portion, the shaft tube portion is protrudingly arranged on the base; a circuit board is arranged on the base, the circuit board has a plurality of light emitting Elements and a plurality of compensation light-emitting elements, the light-emitting elements are located at the periphery of the shaft tube portion, and the light-emitting elements are arranged at intervals, each of the compensation light-emitting elements is arranged between two adjacent light-emitting elements; The shaft tube portion of the frame body, and the stator is electrically connected to the circuit board; and a light guide fan wheel is provided in the frame body, the light guide fan wheel includes: a light guide wheel hub, having an outer peripheral surface and a A light incident surface at the bottom, the light incident surface at the bottom faces the light emitting elements; a plurality of light guide blades are connected to the outer peripheral surface of the light guide hub, each light guide blade has an upper surface, and the upper surface is provided with an upper shield A region and an upper light emitting region; and a first opaque layer covering the upper shielding region of each light guide blade. The glare cooling fan according to claim 23, wherein the frame body has an inner peripheral wall, and the light emitting directions of the compensation light-emitting elements are directed to the inner peripheral wall of the frame body. A light guide fan wheel includes: a light guide hub with an outer peripheral surface and a bottom light incident surface; a plurality of light guide blades connected to the outer circumferential surface of the light guide hub, each of the light guide blades having an upper surface, The upper surface is provided with an upper shielding area and an upper light emitting area; and a first opaque layer covering the upper shielding area of each light guide blade, and the first opaque layer is first covered on each The upper light emitting area of the light guide blade is then removed by laser engraving to cover the upper light emitting area to expose the upper light emitting area. The light guide fan wheel according to claim 25, wherein the light guide hub has a plurality of light guide grooves, the light guide grooves are recessed on the light entrance surface of the bottom, and the light guide grooves are arranged in an annular interval. The light guide fan wheel of claim 26, wherein the light guide hub has a light guide outer ring wall and a light guide inner ring wall, and the light guide grooves are located between the light guide outer ring wall and the light guide inner ring wall between. The light guide fan wheel of claim 25, wherein the light guide hub has a light guide groove, the light guide groove is recessed on the light entrance surface of the bottom, and the light guide groove is ring-shaped. The light guide fan wheel of claim 28, wherein the light guide hub has a light guide outer ring wall and a light guide inner ring wall, and the light guide groove is located between the light guide outer ring wall and the light guide inner ring wall . The light guide fan wheel of claim 25, wherein the light guide hub has a light guide outer ring wall and a light guide inner ring wall, and there is a gap between the light guide outer ring wall and the light guide inner ring wall, the Equal light guide blades are connected to the light guide outer ring wall of the light guide hub. The light guide fan wheel of claim 25, wherein each of the light guide blades has a plurality of side edges, and the first opaque layer covers the side edges. The light guide fan wheel of claim 25, wherein the light guide hub has a top surface, the top surface is opposite to the bottom light incident surface, and the first opaque layer further covers the top surface and the periphery of the light guide hub surface. The light guide fan wheel of claim 25, wherein the material of the first opaque layer is a light absorbing material or a reflective material. The light-guiding fan wheel of claim 25, wherein the upper light-emitting area is in the shape of a tapered arc band. The light-guiding fan wheel of claim 25, wherein the number of the upper light-emitting regions is single or multiple. For example, the light guide fan wheel of claim 25, wherein the shape and state of the upper light-emitting area are patterns, symbols or characters. The light-guiding fan wheel of claim 25, wherein the light-guiding hub and the light-guiding blades are integrally injection-molded with a light-guiding material. According to claim 25, the light guide fan wheel further includes a ring-shaped magnetic pole and a rotating shaft, the ring-shaped magnetic pole is disposed in the light guide hub, and one end of the rotation shaft is connected to the light guide hub. A light guide fan wheel includes: a light guide hub with an outer peripheral surface and a bottom light incident surface; a plurality of light guide blades connected to the outer circumferential surface of the light guide hub, each of the light guide blades having an upper surface and A lower surface, the upper surface is provided with an upper shielding area and an upper light emitting area, the lower surface is provided with a lower shielding area and a lower light emitting area; a first opaque layer covering the upper surface of each light guide blade A shielding area; and a second opaque layer covering the lower shielding area of each light guide blade. The light guide fan wheel of claim 39, wherein each of the light guide blades has a plurality of side edges, and the second opaque layer covers the side edges. According to the light guide fan of claim 39, wherein the material of the second opaque layer is a light absorbing material or a reflective material. The light guide fan wheel of claim 39, wherein the lower light exit area is in the shape of a tapered arc band. The light guide fan wheel of claim 39, wherein the number of the lower light exit areas is single or multiple. For example, the light guide fan wheel of claim 39, wherein the shape of the lower light exit area is a pattern, symbol or text. The light guide fan wheel of claim 39, wherein the second opaque layer first covers the lower light exit area of each light guide blade, and then the laser light engraving method is used to remove the cover of the lower light exit area The second opaque layer exposes the lower light exit area.