Luminous fan and heat dissipation device

Abstract

The present invention relates to a light-emitting fan, comprising a fan bracket, a circuit board, an impeller, a decorative plate, at least one light-emitting component and a light guide. The circuit board is arranged on the fan bracket. The impeller comprises a hub and a plurality of blades, and the hub is rotatably arranged on the fan bracket. The hub has an outer top surface, an outer annular surface and at least one assembly through groove, the outer top surface is opposite to the circuit board, the outer annular surface is connected to the outer top surface, the blades are connected to the outer annular surface of the hub, one end of the assembly through groove is connected to the outer top surface and extends toward the circuit board. The decorative plate is fixed to the fan bracket and is farther away from the circuit board than the outer top surface of the hub. The light-emitting component is arranged on the circuit board. The light guide is inserted into the assembly through groove of the hub. The light emitted by the light-emitting component is irradiated onto the decorative plate via the light guide.

Description

Technical Field

[0001] The invention relates to a fan and a heat dissipation device, and in particular to a luminous fan and a heat dissipation device comprising the same. Background Art

[0002] As the processing speed and performance of electronic devices such as central processing units increase, more heat is generated during operation. The generated heat causes the temperature of the electronic device to rise, and if the heat cannot be effectively discharged to the outside, the reliability and performance of the electronic device will decrease. In order to prevent the electronic device from overheating, a heat dissipation device such as a fan is used to effectively dissipate the heat generated by the electronic device, thereby ensuring that the electronic device can operate normally.

[0003] However, in addition to dissipating heat for electronic components, fans also have a luminous effect. Generally speaking, the fan has a luminous effect by directly irradiating the fan hub or the decorative panel on the hub with the light emitted by the light-emitting diode. However, due to the light-emitting characteristics of the light-emitting diode, the light emitted by the light-emitting diode is more focused, so the light irradiated on the fan hub or decorative panel will form an obvious bright spot, and it cannot be irradiated evenly on the hub or decorative panel. Although increasing the distance between the light-emitting diode and the hub or decorative panel can make the light irradiate the hub or decorative panel more evenly, this method will increase the thickness of the fan, making the fan unfavorable for use in thin electronic devices. Therefore, researchers in this field are currently working to solve the aforementioned problems. Summary of the invention

[0004] The present invention provides a light-emitting fan and a heat dissipation device, so as to solve the problem in the prior art that the light emitted by the light-emitting diode cannot be evenly irradiated on the hub or the decorative plate of the fan.

[0005] A light-emitting fan disclosed in one embodiment of the present invention comprises a fan bracket, a circuit board, an impeller, a decorative plate, at least one light-emitting component and a light guide. The circuit board is arranged on the fan bracket. The impeller comprises a hub and a plurality of blades, and the hub is rotatably arranged on the fan bracket. The hub has an outer top surface, an outer annular surface and at least one assembly through groove, the outer top surface is opposite to the circuit board, the outer annular surface is connected to the outer top surface, the blades are connected to the outer annular surface of the hub, and one end of the assembly through groove is connected to the outer top surface and extends toward the circuit board. The decorative plate is fixed to the fan bracket and is farther away from the circuit board than the outer top surface of the hub. The light-emitting component is arranged on the circuit board. The light guide is inserted into the assembly through groove of the hub. The light emitted by the light-emitting component is irradiated onto the decorative plate through the light guide.

[0006] Another embodiment of the present invention discloses a heat dissipation device, which is used to be arranged on a heat source, and includes a housing, a heat dissipation fin group and a light-emitting fan. The housing includes a bottom plate, and the bottom plate is used to be thermally coupled to the heat source. The heat dissipation fin group is thermally coupled to the bottom plate. The light-emitting fan is fixed to the bottom plate, and is used to generate an airflow to blow toward the heat dissipation fin group. The light-emitting fan includes a fan bracket, a circuit board, an impeller, a decorative plate, at least one light-emitting member and a light guide member. The circuit board is arranged on the fan bracket. The impeller includes a hub and a plurality of blades, and the hub is rotatably arranged on the fan bracket. The hub has an outer top surface, an outer annular surface and at least one assembly through groove, the outer top surface is opposite to the circuit board, the outer annular surface is connected to the outer top surface, the blades are connected to the outer annular surface of the hub, and one end of the assembly through groove is connected to the outer top surface and extends toward the circuit board. The decorative plate is fixed to the fan bracket and is farther away from the circuit board than the outer top surface of the hub. The light-emitting member is arranged on the circuit board. The light guide member is inserted into the assembly through groove of the hub. The light emitted by the light-emitting member is irradiated on the decorative plate through the light guide member.

[0007] According to the light-emitting fan and heat dissipation device disclosed in the above-mentioned embodiments, by integrating the light guide on the hub of the impeller, the light emitted by the light-emitting component can be irradiated on the light guide, diffused by the light guide and emitted onto the decorative plate. Therefore, the light guide can allow the light emitted by the light-emitting component to be evenly irradiated on the decorative plate, so that the light-emitting fan can emit light evenly.

[0008] The above description of the content of the present invention and the following description of the embodiments are used to demonstrate and explain the principles of the present invention, and to provide a further explanation of the scope of the patent application of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a three-dimensional schematic diagram of a light-emitting fan disclosed according to a first embodiment of the present invention.

[0010] Figure 2 for Figure 1 Schematic diagram of the decomposition.

[0011] Figure 3 for Figure 1 Schematic cross-sectional view of .

[0012] Figure 4 FIG. 4 is a schematic three-dimensional diagram of a light-emitting fan disclosed according to a second embodiment of the present invention.

[0013] Figure 5 for Figure 4 Schematic diagram of the decomposition.

[0014] Figure 6 for Figure 4 Schematic cross-sectional view of .

[0015] Figure 7 It is a three-dimensional schematic diagram of a light-emitting fan disclosed according to a third embodiment of the present invention.

[0016] Figure 8 for Figure 7 Schematic diagram of the decomposition.

[0017] Fig. 9 for Figure 7 Schematic cross-sectional view of .

[0018] Fig.10 for Figure 7 Schematic top view of .

[0019] Fig.11 It is a three-dimensional schematic diagram of a light-emitting fan disclosed according to a fourth embodiment of the present invention.

[0020] Fig.12 for Fig.11 Schematic diagram of the decomposition.

[0021] Fig.13 It is a three-dimensional schematic diagram of a heat dissipation device disclosed according to a fifth embodiment of the present invention.

[0022] Fig.14 for Fig.13 Schematic diagram of the decomposition.

[0023] Description of reference numerals:

[0024] 1a, 1b, 1c, 1d Illuminated fans

[0025] 5. Heat dissipation device

[0026] 6 Heat Source

[0027] 7 Circuit Board

[0028] 10a, 10b, 10c, 10d Fan bracket

[0029] 11a, 11b, 11c, 11d bottom plate

[0030] 111d Plate

[0031] 112d Rib

[0032] 12a, 12b, 12c, 12d: column part

[0033] 13d Outer frame

[0034] 20a, 20b, 20c, 20d Circuit board

[0035] 30a, 30b, 30c, 30d Impeller

[0036] 31a, 31b, 31c Wheel hub

[0037] 311a, 311b, 311c Top plate

[0038] 3111a, 3111b, 3111c outer top surface

[0039] 3112a, 3112b, 3112c inner top surface

[0040] 3113a Assembly through slot

[0041] 312a, 312b, 312c Annular side wall portion

[0042] 313a, 313b, 313c Hollow column

[0043] 314a, 314b, 314c Outer ring

[0044] 315b, 315c Assembly through slot

[0045] 32a, 32b, 32c Fan blades

[0046] 40a, 40b, 40c, 40d Light-emitting element

[0047] 41b First light emitting element

[0048] 42b Second light emitting element

[0049] 50a, 50b, 50c, 50d light guide

[0050] 51a, 51b Plate

[0051] 51c Ring frame

[0052] 511a, 511b, 521c light emitting surface

[0053] 52a: bump portion

[0054] 521a Light incident surface

[0055] 52b, 52c Column

[0056] 521b, 511c light incident surface

[0057] 60a, 60b, 60c, 60d trim

[0058] 70a, 70b, 70c Stator

[0059] 71a, 71b, 71c teeth

[0060] 72a, 72b, 72c Coils

[0061] 73a missing slot

[0062] 80a, 80b, 80c bearings

[0063] 90a, 90b, 90c rotors

[0064] 100a, 100b, 100c marking

[0065] 300 heat sink fins

[0066] 400 Housing

[0067] 410 Air Inlet

[0068] P-Projection

[0069] A axis DETAILED DESCRIPTION

[0070] Please also read Figures 1 to 3 . Figure 1 It is a three-dimensional schematic diagram of a light-emitting fan disclosed according to a first embodiment of the present invention. Figure 2 for Figure 1 Schematic diagram of the decomposition. Figure 3 for Figure 1 Schematic cross-sectional view of .

[0071] In this embodiment, the light-emitting fan 1a includes a fan bracket 10a, a circuit board 20a, an impeller 30a, a plurality of light-emitting elements 40a, a light guide 50a and a decorative plate 60a. In this embodiment or other embodiments, the light-emitting fan 1a may further include a stator 70a, two bearings 80a and a rotor 90a.

[0072] The fan bracket 10a includes a bottom plate portion 11a and a column portion 12a, and the column portion 12a protrudes from the bottom plate portion 11a. The column portion 12a of the fan bracket 10a is penetrated through the circuit board 20a, and the stator 70a is fixed on the circuit board 20a. The stator 70a has a plurality of teeth 71a and a plurality of coils 72a. A notch 73a is formed between two adjacent teeth 71a, and the coils 72a are respectively surrounded by the teeth 71a.

[0073] The impeller 30a includes a hub 31a and a plurality of blades 32a. The hub 31a includes a top plate portion 311a, an annular side wall portion 312a and a hollow column portion 313a. The top plate portion 311a of the hub 31a has an outer top surface 3111a, an inner top surface 3112a and a plurality of assembly through grooves 3113a. The outer top surface 3111a of the top plate portion 311a is opposite to the inner top surface 3112a. The annular side wall portion 312a and the hollow column portion 313a both protrude from the inner top surface 3112a of the top plate portion 311a, and the hollow column portion 313a is surrounded by the annular side wall portion 312a. The hollow column 313a of the hub 31a is rotatably disposed on the column 12a of the fan bracket 10a through two bearings 80a, the column 12a of the fan bracket 10a protrudes from the outer top surface 3111a of the top plate 311a, and the inner top surface 3112a of the top plate 311a faces the circuit board 20a. One end of these assembly through grooves 3113a is connected to the outer top surface 3111a and extends toward the circuit board 20a, and the other end of these assembly through grooves 3113a is connected to the inner top surface 3112a. In this embodiment, the hub 31a has an outer annular surface 314a, and the outer annular surface 314a is connected to the outer top surface 3111a of the top plate 311a. These blades 32a are connected to the outer annular surface 314a of the hub 31a. The rotor 90a, for example, a permanent magnet, is provided with an annular side wall portion 312a of the hub 31a adjacent to one side of the stator 70a.

[0074] The light emitting elements 40 a are, for example, light emitting diodes, and are disposed on a surface of the circuit board 20 a that faces the inner top surface 3112 a of the top plate portion 311 a .

[0075] The material of the light guide 50a includes additives, such as diffusion powder. The light guide 50a includes a plate portion 51a and a plurality of protrusion portions 52a, and these protrusion portions 52a protrude from the same surface of the plate portion 51a in the same direction. In this embodiment, the column portion 12a of the fan bracket 10a is inserted into the plate portion 51a of the light guide 50a. These protrusion portions 52a are respectively inserted into these assembly through grooves 3113a, and the plate portion 51a is stacked on the outer top surface 3111a of the top plate portion 311a of the hub 31a, and the top plate portion 311a of the hub 31a is located between the plate portion 51a and the circuit board 20a.

[0076] The decorative plate 60a is made of a light-transmitting material such as a transparent or translucent material, wherein the transparent or translucent material includes acrylic, glass, and plastic, etc. The decorative plate 60a is fixed to the column portion 12a and is inserted into one end of the plate portion 51a of the light guide 50a, and the plate portion 51a of the light guide 50a is located between the decorative plate 60a and the outer top surface 3111a of the top plate portion 311a. When the circuit board 20a guides the current through these coils 72a, the rotor 90a will rotate relative to the stator 70a, thereby driving the impeller 30a to rotate relative to the fan bracket 10a. During the rotation of the impeller 30a, since the decorative plate 60a is fixed to the column portion 12a of the fan bracket 10a, the decorative plate 60a will not rotate with the impeller 30a.

[0077] In this embodiment, each of the protruding block portions 52a of the light guide 50a has a light incident surface 521a, and the plate portion 51a has a light emitting surface 511a. The light incident surfaces 521a face the circuit board 20a, and the light emitting surface 511a faces the decorative plate 60a. In this embodiment, the total area of ​​the light incident surfaces 521a is smaller than the area of ​​the light emitting surface 511a, but the present invention is not limited thereto. In other embodiments, the total area of ​​the light incident surfaces may be greater than or equal to the area of ​​the light emitting surface.

[0078] The light emitted by the light emitting elements 40a passes through the notches 73a of the stator 70a and is irradiated on the light-incoming surfaces 521a of the protruding portions 52a of the light guide 50a, and enters the light guide 50a. Then, the light entering the light guide 50a is diffused by the light guide 50a and emitted from the light-emitting surface 511a of the plate portion 51a of the light guide 50a to the decorative plate 60a, so that the light is evenly irradiated on the decorative plate 60a, and the light-emitting fan 1a emits light evenly.

[0079] In this embodiment, the decorative plate 60a is provided with a mark 100a, for example, the mark 100a is a text, such as Figure 1 The English letter "A" is shown. The mark 100a can be formed on the decorative plate 60a, for example, by spray painting or sticking a nameplate. The mark 100a is not limited to the English letter "A". In other embodiments, the mark can also be a brand name, a brand pattern, or any desired mark. On the other hand, the decorative plate 60a is not limited to having the mark 100a. In other embodiments, the decorative plate can be set without a mark.

[0080] In this embodiment, the number of the light emitting member 40a, the convex portion 52a of the light guide member 50a and the assembly through slot 3113a of the hub 31a is not limited to multiple. In other embodiments, the number of the light emitting member, the convex portion of the light guide member and the assembly through slot of the hub may be only one.

[0081] Next, please also refer to Figures 4 to 6 . Figure 4FIG. 4 is a schematic three-dimensional diagram of a light-emitting fan disclosed according to a second embodiment of the present invention. Figure 5 for Figure 4 Schematic diagram of the decomposition. Figure 6 for Figure 4 Schematic cross-sectional view of .

[0082] In this embodiment, the light-emitting fan 1b includes a fan bracket 10b, a circuit board 20b, an impeller 30b, a plurality of light-emitting elements 40b, a light guide 50b and a decorative plate 60b. In this embodiment or other embodiments, the light-emitting fan 1b may further include a stator 70b, two bearings 80b and a rotor 90b.

[0083] The fan bracket 10b includes a bottom plate portion 11b and a column portion 12b, and the column portion 12b protrudes from the bottom plate portion 11b. The column portion 12b of the fan bracket 10b is penetrated through the circuit board 20b, and the stator 70b is fixed on the circuit board 20b. The stator 70b has a plurality of teeth 71b and a plurality of coils 72b, and the coils 72b are surrounded by the teeth 71b.

[0084] The impeller 30b includes a hub 31b and a plurality of blades 32b. The hub 31b includes a top plate portion 311b, an annular side wall portion 312b and a hollow column portion 313b. The top plate portion 311b of the hub 31b has an outer top surface 3111b and an inner top surface 3112b. The outer top surface 3111b of the top plate portion 311b is opposite to the inner top surface 3112b. The annular side wall portion 312b and the hollow column portion 313b both protrude from the inner top surface 3112b of the top plate portion 311b, and the hollow column portion 313b is surrounded by the annular side wall portion 312b. The hollow column 313b of the hub 31b is rotatably disposed on the column 12b of the fan bracket 10b through two bearings 80b, the column 12b of the fan bracket 10b protrudes from the outer top surface 3111b of the top plate 311b, and the inner top surface 3112b of the top plate 311b faces the circuit board 20b. In this embodiment, the hub 31b also has an outer annular surface 314b, and the outer annular surface 314b is connected to the outer top surface 3111b of the top plate 311b. These fan blades 32b are connected to the outer annular surface 314b of the hub 31b. In addition, the hub 31b also has a plurality of assembly through grooves 315b, and different parts of each assembly through groove 315b are respectively located on the top plate 311b and the annular side wall 312b. One end of these assembly through grooves 315b is connected to the outer top surface 3111b and extends toward the circuit board 20b. The rotor 90b is provided on one side of the annular side wall portion 312b of the hub 31b adjacent to the stator 70b.

[0085] These light emitting elements 40b are, for example, light emitting diodes. These light emitting elements 40b are disposed on the surface of the inner top surface 3112b of the circuit board 20b facing the top plate portion 311b. These light emitting elements 40b include a plurality of first light emitting elements 41b and a plurality of second light emitting elements 42b. These second light emitting elements 42b are closer to the column portion 12b of the fan bracket 10b than these first light emitting elements 41b. In other words, these second light emitting elements 42b are closer to the rotation axis A of the hub 30b than these first light emitting elements 41b.

[0086] The material of the light guide 50b includes additives, such as diffusion powder. The light guide 50b includes a plate portion 51b and a plurality of column portions 52b, and the column portions 52b protrude from the same surface of the plate portion 51b in the same direction. In the present embodiment, the column portion 12b of the fan bracket 10b is inserted into the plate portion 51b of the light guide 50b. The column portions 52b are respectively inserted into the assembly through grooves 315b, and the plate portion 51b is stacked on the outer top surface 3111b of the top plate portion 311b of the hub 31b, and the top plate portion 311b of the hub 31b is located between the plate portion 51b and the circuit board 20b.

[0087] The decorative plate 60b is made of a light-transmitting material such as a transparent or translucent material, wherein the transparent or translucent material includes acrylic, glass, and plastic, etc. The decorative plate 60b is fixed to the column portion 12b and is inserted into one end of the plate portion 51b of the light guide 50b, and the plate portion 51b of the light guide 50b is located between the decorative plate 60b and the outer top surface 3111b of the top plate portion 311b. When the circuit board 20b guides the current through these coils 72b, the rotor 90b will rotate relative to the stator 70b, thereby driving the impeller 30b to rotate relative to the fan bracket 10b. During the rotation of the impeller 30b, since the decorative plate 60b is fixed to the column portion 12b of the fan bracket 10b, the decorative plate 60b will not rotate with the impeller 30b.

[0088] In this embodiment, each of the column portions 52b of the light guide 50b has a light incident surface 521b, and the plate portion 51b has a light emitting surface 511b. The light incident surfaces 521b face the circuit board 20b, and the light emitting surface 511b faces the decorative plate 60b. In this embodiment, the total area of ​​the light incident surfaces 521b is smaller than the area of ​​the light emitting surface 511b, but the present invention is not limited thereto. In other embodiments, the total area of ​​the light incident surfaces may be greater than or equal to the area of ​​the light emitting surface.

[0089] The light emitted by the first light emitting element 41b and the second light emitting elements 42b is irradiated on the light incident surface 521b of the pillars 52b of the light guide 50b and enters the light guide 50b. The light entering the light guide 50b is diffused by the light guide 50b and emitted from the light emitting surface 511b of the plate portion 51b of the light guide 50b to the decorative plate 60b, so that the light is evenly irradiated on the decorative plate 60b, so that the light emitting fan 1b is evenly illuminated.

[0090] In this embodiment, by arranging the second light-emitting component 42b closer to the rotation axis A of the hub 30b than the first light-emitting component 41b, the dark area within the hub 31b of the impeller 30b can be eliminated, so that the light emitted by the first light-emitting component 41b and the second light-emitting component 42b can be more evenly irradiated onto the light incident surface 521b of these columnar portions 52b of the light guide component 50b.

[0091] In this embodiment, the decorative plate 60b is provided with a mark 100b, for example, the mark 100b is a text, such as Figure 4 The English letter "A" is shown. The mark 100b can be formed on the decorative plate 60b, for example, by spray painting or sticking a nameplate. The mark 100b is not limited to the English letter "A". In other embodiments, the mark can also be a brand name, a brand pattern, or any desired mark. On the other hand, the decorative plate 60b is not limited to having the mark 100b. In other embodiments, the decorative plate can be set without a mark.

[0092] In this embodiment, the number of the light emitting member 40b, the column 52b of the light guide member 50b and the assembly through slot 315b of the hub 31b is not limited to multiple. In other embodiments, the number of the light emitting member, the column 52b of the light guide member and the assembly through slot of the hub may be only one.

[0093] Next, please also refer to Figures 7 to 10 . Figure 7 It is a three-dimensional schematic diagram of a light-emitting fan disclosed according to a third embodiment of the present invention. Figure 8 for Figure 7 Schematic diagram of the decomposition. Fig. 9 for Figure 7 Schematic cross-sectional view of . Fig.10 for Figure 7 Schematic top view of .

[0094] In this embodiment, the light-emitting fan 1c includes a fan bracket 10c, a circuit board 20c, an impeller 30c, a plurality of light-emitting elements 40c, a light guide 50c and a decorative plate 60c. In this embodiment or other embodiments, the light-emitting fan 1c may further include a stator 70c, two bearings 80c and a rotor 90c.

[0095] The fan bracket 10c includes a bottom plate portion 11c and a column portion 12c, and the column portion 12c protrudes from the bottom plate portion 11c. The column portion 12c of the fan bracket 10c is penetrated through the circuit board 20c, and the stator 70c is fixed on the circuit board 20c. The stator 70c has a plurality of teeth 71c and a plurality of coils 72c, and the coils 72c are respectively arranged on the teeth 71c.

[0096] The impeller 30c includes a hub 31c and a plurality of blades 32c. The hub 31c includes a top plate portion 311c, an annular side wall portion 312c and a hollow column portion 313c. The top plate portion 311c of the hub 31c has an outer top surface 3111c and an inner top surface 3112c. The outer top surface 3111c of the top plate portion 311c is opposite to the inner top surface 3112c. The annular side wall portion 312c and the hollow column portion 313c both protrude from the inner top surface 3112c of the top plate portion 311c, and the hollow column portion 313c is surrounded by the annular side wall portion 312c. The hollow column 313c of the hub 31c is rotatably disposed on the column 12c of the fan bracket 10c through two bearings 80c, the column 12c of the fan bracket 10c protrudes from the outer top surface 3111c of the top plate 311c, and the inner top surface 3112c of the top plate 311c faces the circuit board 20c. In this embodiment, the hub 31c also has an outer annular surface 314c, and the outer annular surface 314c is connected to the outer top surface 3111c of the top plate 311c. These fan blades 32c are connected to the outer annular surface 314c of the hub 31c. In addition, the hub 31c also has a plurality of assembly through grooves 315c, and different parts of each assembly through groove 315c are respectively located on the top plate 311c and the annular side wall 312c. One end of these assembly through grooves 315c is connected to the outer top surface 3111c and extends toward the circuit board 20c. The rotor 90c is provided on one side of the annular side wall portion 312c of the hub 31c adjacent to the stator 70c.

[0097] The light-emitting elements 40 c are, for example, light-emitting diodes, and are disposed on a surface of the circuit board 20 c that faces the inner top surface 3112 c of the top plate portion 311 c.

[0098] The material of the light guide 50c includes additives such as diffusion powder. The light guide 50c includes a ring frame portion 51c and a plurality of pillar portions 52c, and the pillar portions 52c protrude from the same surface of the ring frame portion 51c in the same direction. The pillar portions 52c are respectively inserted into the assembly through grooves 315c, and the ring frame portion 51c is located between the top plate portion 311c of the hub 31c and the circuit board 20c.

[0099] In the present embodiment, the decorative plate 60c is made of a light-transmitting material such as a transparent or translucent material, wherein the transparent or translucent material includes acrylic, glass, and plastic, etc. The decorative plate 60c is fixed to one end of the column portion 12c protruding from the outer top surface 3111c of the top plate portion 311c. When the circuit board 20c guides the current through these coils 72c, the rotor 90c will rotate relative to the stator 70c, thereby driving the impeller 30c to rotate relative to the fan bracket 10c. During the rotation of the impeller 30c, since the decorative plate 60c is fixed to the column portion 12c of the fan bracket 10c, the decorative plate 60c does not rotate with the impeller 30c.

[0100] In this embodiment, the orthographic projection P of the decorative plate 60c on the outer top surface 3111c of the top plate portion 311c partially overlaps with the assembly through grooves 315c of the wheel hub 31c.

[0101] The ring frame portion 51c of the light guide 50c has a light incident surface 511c, and the column portions 52c each have a light emitting surface 521c. The light incident surface 511c faces the circuit board 20c, and the light emitting surfaces 521c are exposed from the assembly through slots 315c.

[0102] The light emitted by these light emitting elements 40c is irradiated on the light incident surface 511c of the ring frame portion 51c of the light guide 50c, and enters the light guide 50c. Then, the light entering the light guide 50c is diffused by the light guide 50c, and is emitted from the light emitting surfaces 521c of the pillar portions 52c of the light guide 50c to the decorative plate 60c, so that the light is evenly irradiated on the decorative plate 60c, so that the light emitting fan 1c emits light evenly.

[0103] In this embodiment, the decorative plate 60c is provided with a mark 100c, for example, the mark 100c is a text, such as Figure 7 The English letter "A" is shown. The mark 100c can be formed on the decorative plate 60c, for example, by spray painting or sticking a nameplate. The mark 100c is not limited to the English letter "A". In other embodiments, the mark can also be a brand name, a brand pattern, or any desired mark. On the other hand, the decorative plate 60c is not limited to having the mark 100c. In other embodiments, the decorative plate can be set without a mark.

[0104] In this embodiment, the number of the light emitting member 40c, the column 52c of the light guide member 50c and the assembly slot 315c of the hub 31c is not limited to multiple. In other embodiments, the number of the light emitting member, the column 52c of the light guide member and the assembly slot of the hub may be only one.

[0105] Next, see Fig.11 and Fig.12 . Fig.11 It is a three-dimensional schematic diagram of a light-emitting fan disclosed according to a fourth embodiment of the present invention. Fig.12 for Fig.11 Schematic diagram of the decomposition.

[0106] In this embodiment, the light-emitting fan 1d is, for example, a fan of a computer host, and the light-emitting fan 1d also includes a fan bracket 10d, a circuit board 20d, an impeller 30d, a plurality of light-emitting elements 40d, a light guide element 50d and a decorative plate 60d.

[0107] The luminous fan 1d of this embodiment is similar to Figure 7The main difference between the two is that the structure of the fan bracket of this embodiment is different, so only the fan bracket 10d is described in detail below, and the details of other components are not repeated.

[0108] In this embodiment, the fan bracket 10d includes a bottom plate portion 11d, a column portion 12d and an outer frame portion 13d. The bottom plate portion 11d includes a plate body 111d and a plurality of ribs 112d. The column portion 12d protrudes from the plate body 111d of the bottom plate portion 11d. One end of the ribs 112d is connected to the plate body 111d, and the other end of the ribs 112d is connected to the outer frame portion 13d. The outer frame portion 13d of the fan bracket 10d surrounds the impeller 30d.

[0109] In this embodiment, the fan bracket 10d is not limited to being used for the light-emitting fan 1d. Figure 1 or Figure 4 The luminous fan can adopt the fan bracket 10d.

[0110] Next, see Fig.13 and Fig.14 . Fig.13 It is a three-dimensional schematic diagram of a heat dissipation device disclosed according to a fifth embodiment of the present invention. Fig.14 for Fig.13 Schematic diagram of the decomposition.

[0111] In this embodiment, the heat dissipation device 5 is used to be disposed on a heat source 6, and the heat source 6 is, for example, a display card chip on a circuit board 7. The heat dissipation device 5 includes a heat dissipation fin set 300 and a light-emitting fan 1c.

[0112] The heat dissipation fin group 300 is used for thermal coupling to the heat source 6. The light-emitting fan 1c is Figure 7 The light-emitting fan 1c is a light-emitting fan 1c, so the detailed structure of the light-emitting fan 1c is not described in detail below. The light-emitting fan 1c is, for example, an axial flow fan. The light-emitting fan 1c is used to be located on a side of the heat dissipation fin group 300 away from the heat source 6. In this embodiment, the heat dissipation device 5 further includes a shell 400. The shell 400 surrounds the light-emitting fan 1c. The shell 400 has an air inlet 410. The light-emitting fan 1c in operation can blow air from the air inlet 410 to the heat dissipation fin group 300 to take away the heat absorbed by the heat dissipation fin group 300.

[0113] In this embodiment, the light-emitting fan 1c of the heat dissipation device 5 is not limited to Figure 7 In other embodiments, the luminous fan of the heat dissipation device may be Figure 1 or Figure 4 Glowing fan.

[0114] According to the light-emitting fan and heat dissipation device disclosed in the above-mentioned embodiments, by integrating the light guide on the hub of the impeller, the light emitted by the light-emitting component can be irradiated on the light guide, diffused by the light guide and emitted onto the decorative plate. Therefore, the light guide can allow the light emitted by the light-emitting component to be evenly irradiated on the decorative plate, so that the light-emitting fan can emit light evenly.

[0115] In some embodiments, the light guide component can irradiate light onto the decorative plate more uniformly by making the total area of ​​the light incident surfaces of the light guide component smaller than the area of ​​the light emitting surface.

Claims

1. A luminous fan, characterized in that: Include: Fan bracket; A circuit board is arranged on the fan bracket; An impeller, comprising a hub and a plurality of blades, the hub being rotatably disposed on the fan bracket, the hub having an outer top surface, an outer annular surface and at least one set of through grooves, the outer top surface facing away from the circuit board, the outer annular surface being connected to the outer top surface, the blades being connected to the outer annular surface of the hub, and one end of the at least one set of through grooves being connected to the outer top surface and extending toward the circuit board; A decorative plate, fixed to the fan bracket and further away from the circuit board than the outer top surface of the hub; At least one light-emitting element is disposed on the circuit board; as well as A light guide member inserted into the at least one set of through grooves of the hub; Wherein, the light emitted by the at least one light-emitting element is irradiated onto the decorative plate via the light-guiding element; Wherein, the hub comprises a top plate portion, and the outer top surface is located on the top plate portion; The light guide comprises a plate portion and at least one column portion, the at least one column portion protrudes from the plate portion, the at least one column portion is inserted into the at least one assembly through groove, the plate portion is stacked on the outer top surface of the hub, and the top plate portion of the hub is located between the plate portion and the circuit board; or; the light guide comprises a plate portion and at least one protrusion portion, the at least one protrusion portion protrudes from the plate portion, the at least one protrusion portion is inserted into the at least one assembly through groove, the plate portion is stacked on the outer top surface of the hub, and the top plate portion of the hub is located between the plate portion and the circuit board.

2. The light-emitting fan according to claim 1, characterized in that: The hub also includes an annular side wall portion, the top plate portion has an inner top surface relative to the outer top surface, the annular side wall portion protrudes from the inner top surface of the top plate portion, and different parts of the at least one set of penetration grooves are respectively located on the top plate portion and the annular side wall portion.

3. The light-emitting fan according to claim 2, characterized in that: The at least one assembly through groove, the at least one column portion and the at least one light-emitting element are all in plural numbers, the assembly through grooves are arranged at intervals, and the column portions are respectively inserted into the assembly through grooves.

4. The light-emitting fan according to claim 3, characterized in that: The columns each have a light incident surface facing the circuit board, the board has a light emitting surface facing the decorative plate, and the total area of ​​the light incident surfaces is smaller than the area of ​​the light emitting surface.

5. The light-emitting fan according to claim 3, characterized in that: The light-emitting components include a plurality of first light-emitting components and a plurality of second light-emitting components. The second light-emitting components are closer to the rotation axis of the hub than the first light-emitting components.

6. The light-emitting fan according to claim 2, characterized in that: The light guide comprises a ring frame portion and at least one column portion, the at least one column portion protrudes from the ring frame portion, the at least one column portion is inserted into the at least one set of through grooves, and the ring frame portion is located between the top plate portion of the hub and the circuit board.

7. The light-emitting fan according to claim 6, characterized in that: The at least one assembly through groove, the at least one column portion and the at least one light-emitting element are all in plural numbers, the assembly through grooves are arranged at intervals, and the column portions are respectively inserted into the assembly through grooves.

8. The light-emitting fan according to claim 7, characterized in that: The orthographic projection of the decorative plate on the outer top surface of the hub partially overlaps with the assembly through grooves.

9. The light-emitting fan according to claim 1, characterized in that: The hub further comprises an annular side wall portion, the top plate portion has an inner top surface relative to the outer top surface, the annular side wall portion protrudes from the inner top surface of the top plate portion, and the at least one set of penetration grooves is located on the top plate portion.

10. The light-emitting fan according to claim 9, characterized in that: The at least one assembly through groove, the at least one column portion and the at least one light-emitting element are all in plural numbers, the assembly through grooves are arranged at intervals, and the column portions are respectively inserted into the assembly through grooves.

11. The light-emitting fan according to claim 10, characterized in that: The convex block parts each have a light incident surface, the light incident surfaces face the circuit board, the board part has a light emitting surface, the light emitting surface faces the decorative plate, and the total area of ​​the light incident surfaces is smaller than the area of ​​the light emitting surface.

12. The light-emitting fan according to claim 9, characterized in that: It also includes a stator and a rotor. The stator is arranged on the circuit board. The stator has a plurality of teeth. A notch is formed between two adjacent teeth. The light emitted by the at least one light-emitting element irradiates the light guide element through the notch. The rotor is arranged on the hub.

13. The light-emitting fan according to claim 1, characterized in that: The portion of the light guide is farther from the circuit board than the outer top surface and is located between the trim plate and the outer top surface of the hub.

14. A heat dissipation device, arranged on a heat source, characterized in that: Include: A heat sink assembly, for thermally coupling to the heat source; and A light-emitting fan is used to be located at a side of the heat dissipation fin group away from the heat source, and the light-emitting fan is used to blow air toward the heat dissipation fin group. The light-emitting fan comprises: Fan bracket; A circuit board is arranged on the fan bracket; An impeller, comprising a hub and a plurality of blades, the hub being rotatably disposed on the fan bracket, the hub having an outer top surface, an outer annular surface and at least one set of through grooves, the outer top surface facing away from the circuit board, the outer annular surface being connected to the outer top surface, the blades being connected to the outer annular surface of the hub, and one end of the at least one set of through grooves being connected to the outer top surface and extending toward the circuit board; A decorative plate, fixed to the fan bracket and further away from the circuit board than the outer top surface of the hub; At least one light-emitting element is disposed on the circuit board; as well as A light guide member inserted into the at least one set of through grooves of the hub; Wherein, the light emitted by the at least one light-emitting element is irradiated onto the decorative plate via the light-guiding element; Wherein, the hub comprises a top plate portion, and the outer top surface is located on the top plate portion; The light guide comprises a plate portion and at least one column portion, the at least one column portion protrudes from the plate portion, the at least one column portion is inserted into the at least one assembly through groove, the plate portion is stacked on the outer top surface of the hub, and the top plate portion of the hub is located between the plate portion and the circuit board; or the light guide comprises a plate portion and at least one protrusion portion, the at least one protrusion portion protrudes from the plate portion, the at least one protrusion portion is inserted into the at least one assembly through groove, the plate portion is stacked on the outer top surface of the hub, and the top plate portion of the hub is located between the plate portion and the circuit board.

15. The light-emitting fan according to claim 14, characterized in that: The hub also includes an annular side wall portion, the top plate portion has an inner top surface relative to the outer top surface, the annular side wall portion protrudes from the inner top surface of the top plate portion, and different parts of the at least one set of penetration grooves are respectively located on the top plate portion and the annular side wall portion.

16. The light-emitting fan according to claim 15, characterized in that: The at least one assembly through groove, the at least one column portion and the at least one light-emitting element are all in plural numbers, the assembly through grooves are arranged at intervals, and the column portions are respectively inserted into the assembly through grooves.

17. The light-emitting fan according to claim 16, characterized in that: The columns each have a light incident surface facing the circuit board, the board has a light emitting surface facing the decorative plate, and the total area of ​​the light incident surfaces is smaller than the area of ​​the light emitting surface.

18. The light-emitting fan according to claim 16, characterized in that: The light-emitting components include a plurality of first light-emitting components and a plurality of second light-emitting components. The second light-emitting components are closer to the rotation axis of the hub than the first light-emitting components.

19. The light-emitting fan according to claim 15, characterized in that: The light guide comprises a ring frame portion and at least one column portion, the at least one column portion protrudes from the ring frame portion, the at least one column portion is inserted into the at least one set of through grooves, and the ring frame portion is located between the top plate portion of the hub and the circuit board.

20. The light-emitting fan according to claim 19, characterized in that: The at least one assembly through groove, the at least one column portion and the at least one light-emitting element are all in plural numbers, the assembly through grooves are arranged at intervals, and the column portions are respectively inserted into the assembly through grooves.

21. The light-emitting fan according to claim 20, characterized in that: The orthographic projection of the decorative plate on the outer top surface of the hub partially overlaps with the assembly through grooves.

22. The light-emitting fan according to claim 14, characterized in that: The wheel hub comprises an annular side wall portion, the top plate portion has an inner top surface relative to the outer top surface, the annular side wall portion protrudes from the inner top surface of the top plate portion, and the at least one set of penetration grooves is located on the top plate portion.

23. The light-emitting fan according to claim 22, characterized in that: The at least one assembly through groove, the at least one column portion and the at least one light-emitting element are all in plural numbers, the assembly through grooves are arranged at intervals, and the column portions are respectively inserted into the assembly through grooves.

24. The light-emitting fan according to claim 23, characterized in that: The convex block parts each have a light incident surface, the light incident surfaces face the circuit board, the board part has a light emitting surface, the light emitting surface faces the decorative plate, and the total area of ​​the light incident surfaces is smaller than the area of ​​the light emitting surface.

25. The light-emitting fan according to claim 14, characterized in that: The portion of the light guide is farther from the circuit board than the outer top surface and is located between the trim plate and the outer top surface of the hub.

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