WO2019140781A1

WO2019140781A1 - Color wheel module and projection device

Info

Publication number: WO2019140781A1
Application number: PCT/CN2018/080884
Authority: WO
Inventors: 戴达炎; 李屹
Original assignee: 深圳光峰科技股份有限公司
Priority date: 2018-01-17
Filing date: 2018-03-28
Publication date: 2019-07-25
Also published as: CN110045572A

Abstract

A color wheel module (10), comprising a base plate (11), a light conversion layer (12), and a plurality of balance members (13). The light conversion layer (12) covers a side surface of the base plate (11), and the plurality of balance members (13) is disposed on the other side surface of the base plate (11) away from the light conversion layer (12) and is spaced apart from each other around the rotation center of the base plate (11), wherein the balance members (13) can be removed, at least partially, from the base plate (11) according to a dynamic balance requirement of the color wheel module (10), and the plurality of balance members (13) is also used to increase the heat dissipation area of the color wheel module (10) so as to improve the heat dissipation efficiency of the color wheel module (10). Also disclosed is a projection device (50), comprising the color wheel module (10). According to the approach above, when the dynamic balance of the color wheel module (10) is not satisfactory, some balance members (13) can be removed to make the dynamic balance of the color wheel module (10) satisfactory, and the increasing heat dissipation area of the color wheel module (10) can improve the heat dissipation efficiency of the color wheel module (10).

Description

\¥0 2019/140781 卩(:17(:\2018/080884

Color wheel module and projection device

[0001] The present application relates to the field of projection devices, and in particular, to a color wheel module and a projection device.

Background technique

[0002] In today's projection devices such as projectors and projection televisions, in order to make the internal projection light have a color, a color wheel is generally added between the projection light source of the projection device and the display panel, so that the light beam from the projection light source passes through The color wheel has color after filtering. Since the color wheel has a light conversion layer, when the color wheel rotates rapidly, the light beam passing through the light conversion layer exhibits different colors, and after being reflected or projected, a color pattern is displayed on the display panel.

Summary of invention

technical problem

[0003] In the production of the color wheel, due to the unevenness of the thickness setting of the light conversion layer, or the deviation of the concentricity between the base plate and the driving motor assembly, the color wheel module may be unbalanced.

Problem solution

Technical solution

[0004] The technical problem to be solved by the present application is to provide a color wheel module, which can remove a part of the balance piece to make the dynamic balance of the color wheel module meet the demand when the dynamic balance of the color wheel module does not meet the demand, and By increasing the heat dissipation area of the color wheel module, the heat dissipation efficiency of the color wheel module is improved.

[0005] In order to solve the above technical problem, a technical solution adopted by the present application is: providing a color wheel module, the color wheel module comprising: a base plate, a light conversion layer and a plurality of balance members, wherein the light conversion layer is covered a plurality of balance members are disposed on the other side surface of the base plate remote from the light conversion layer and spaced apart from the rotation center of the base plate, wherein the balance member can be dynamically balanced according to the color wheel module The demand is at least partially removed from the base plate, and the plurality of balance members are also used to increase the heat dissipation area of the color wheel module to improve the heat dissipation efficiency of the color wheel module.

In order to solve the above technical problem, another technical solution adopted by the present application is to provide a projection device including the color wheel module described above. \¥0 2019/140781 卩(:17(:\2018/080884

[0007]

Advantageous effects of the invention

Beneficial effect

[0008] The beneficial effects of the present application are: different from the prior art, the color wheel module of the present application includes: a base plate, a light conversion layer and a plurality of balance members, and the light conversion layer covers one side surface of the base plate a plurality of balance members are disposed on the other side surface of the base plate away from the light conversion layer and spaced around the rotation center of the base plate, wherein the balance member can be at least partially moved from the base plate according to the dynamic balance requirement of the color wheel module In addition, a plurality of balance members are also used to increase the heat dissipation area of the color wheel module to improve the heat dissipation efficiency of the color wheel module. Since the balance member can be at least partially removed from the base plate according to the dynamic balance requirement of the color wheel module, the movement of the color wheel module can be made by removing part of the balance member when the dynamic balance of the color wheel module is not satisfactory. The balance meets the demand. Further, since the plurality of balance members are disposed on the base plate, the base plate and the balance member can dissipate heat to the color wheel module, increase the heat dissipation area of the color wheel module, and improve the color wheel mode. The heat dissipation efficiency of the group.

Brief description of the drawing

DRAWINGS

1 is a schematic cross-sectional view of a color wheel module according to a first embodiment of the present application;

2 is a schematic structural view of a color wheel module according to a second embodiment of the present application;

1 is a schematic structural view of a color wheel module according to another embodiment of the second embodiment of the present application;

3 is a schematic structural view of a color wheel module according to a third embodiment of the present application;

4 is a schematic structural view of a color wheel module according to a fourth embodiment of the present application;

5 is a schematic structural diagram of a projection apparatus according to an embodiment of the present application.

Invention embodiment

Embodiments of the invention

[0015] In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the application and are not intended to be limiting.

[0016] It is to be noted that when an element is described as being "fixed" or "on" another element, it can be directly on the other element or both. When a component is described as " \¥0 2019/140781 卩(:17(:\2018/080884) Another component, which can be directly connected to another component or possibly a centered component.

[0017] It should also be noted that the left, right, top, bottom, top, bottom and other orientation terms in the following embodiments are only relative concepts or reference to the normal use state of the product, and should not be used. It is considered to be restrictive.

Please refer to FIG. 1. FIG. 1 is a schematic cross-sectional view of a color wheel module according to a first embodiment of the present application.

In the present embodiment, the color wheel module 10 includes a base 11, a light conversion layer 12, and a plurality of balance members 13.

[0020] The light conversion layer 12 is covered on one side surface of the substrate 11.

[0021] A plurality of balance members 13 are disposed on the other side surface of the base plate 11 away from the light conversion layer 12 and spaced apart around the rotation center of the base plate 11, wherein the balance member 13 can be moved according to the color wheel module 10 The balancing requirements are at least partially removed from the base plate 11. The plurality of balancing members 13 are also used to increase the heat dissipation area of the color wheel module 10 to improve the heat dissipation efficiency of the color wheel module.

[0022] The color wheel module 10 further includes a drive motor 14 for driving the base 11 to rotate.

In the present embodiment, the color wheel module 10 includes a reflective layer 15 disposed between the light conversion layer 12 and the substrate 11. The reflective layer 15 is for reflecting the colored light beam generated after conversion by the light conversion layer 12.

In another embodiment, the color wheel module 10 includes a transmissive layer (not shown) disposed between the light conversion layer 12 and the substrate 11. The transmission layer is for transmitting a colored light beam generated after conversion by the light conversion layer 12.

[0025] In the present embodiment, the shape of the base 11 is circular. In other embodiments, the shape of the base plate 11 may be a polygon such as a triangle, a quadrangle, a pentagon, or a hexagon, which is not limited in this application.

In this embodiment, the material of the base plate 11 may be metal, and the metal material may be copper, copper, copper alloy or aluminum alloy. In other embodiments, the material of the base plate 11 may be a polymer material, which is not limited in this application.

[0027] Alternatively, the diameter of the base plate 11 may range from 5 〇 111111 to 150 _, for example, the diameter of the base plate 11 may be 50111111, 100111111 or 150111111. In the present embodiment, the diameter of the base 11 is 100_1.

[0028] The base plate 11 may include a first disk body 111 at a center of rotation and a second disk body 112 disposed around the first disk body 111. The second disk body 112 is coupled to the first disk body 111. In the present embodiment, the second disk body 112 is integrally formed with the first disk body 111. Alternatively, the outer circumference of the first disk body 111 may be half the size of the outer circumference of the second disk body 112. For example, when the outer diameter of the first disk 111 is eight, the outer diameter of the second disk 112 may be

2 eight \¥0 2019/140781 卩(:17(:\2018/080884

[0029] Optionally, the outer diameter of the first disc body may range from 40 to 6 () 111111, and the outer diameter of the second disc body may be 80 to 120111111. For example, the outer diameter of the first disk body may be 40111111, 50111111 or 6() 111111, and the outer diameter of the second disk body may be 80111111, 100111111 or 120111111. In this embodiment, the outer diameter of the first disk body is 50111111, and the outer diameter of the second disk body is 100111111.

In the present embodiment, the thickness of the first disk body 111 is smaller than the thickness of the second disk body 112. In other embodiments, the thickness of the first disk 111 may be greater than or equal to the thickness of the second disk 112, which is not limited herein.

[0031] The light conversion layer 12 is for converting a light beam (white light) of a projection light source into an image light beam (color light) having a color. In the present embodiment, the light conversion layer 12 may be composed of a phosphor layer. For example, the light conversion layer 12 may be composed of a red phosphor, a blue phosphor, and a green phosphor in a predetermined ratio. In other embodiments, the light conversion layer 12 may be composed of a filter. For example, the light conversion layer 12 may be a predetermined ratio of three filters of a red filter, a blue filter, and a green filter. Composition.

[0032] Optionally, the light conversion layer 12 is covered on one side surface of the base plate 11. The light conversion layer 12 may be partially disposed on one side surface of the second disk body 112, and the light conversion layer 12 is all disposed at the second surface. On one side surface of the disk body 112, or the light conversion layer 12 is disposed on one side surface of the first disk body 111 and on one side surface of the second disk body 112. In the present embodiment, the light conversion layer 12 is entirely disposed on one side surface of the second disk body 112, that is, the projection size of the light conversion layer 12 on the substrate 11 is the same as the size of one side surface of the second disk body 112. .

[0033] The reflective layer 15 is disposed between the light conversion layer 12 and the substrate 11. In the present embodiment, the projection of the light conversion layer 12 on the substrate 11 can completely cover the projection of the reflective layer 15 on the substrate 11, and the projected area of the light conversion layer 12 on the substrate 11 is larger than that of the reflective layer 15. The projected area on the base plate 11. In other embodiments, the projection of the light conversion layer on the substrate 11 may fall into the projection of the reflective layer 15 on the substrate 11, and the projected area of the light conversion layer 12 on the substrate 11 is less than or equal to the reflective layer 15. The projected area on the base plate 11.

In other embodiments, the color wheel module 10 can include a transmissive layer disposed between the light converting layer 12 and the substrate 11. Alternatively, the position of the projection layer on the base plate 11 may be similar to the position of the reflective layer 15, and will not be described again.

[0035] Optionally, the first disk body 111 is provided with an opening (not shown) for arranging the driving motor 14, and the driving motor 14 is fixedly connected to the first disk body 111 by extending into the opening.

[0036] Optionally, the shape of the opening is not limited to a circle, a polygon or other shapes. Optional drive motor \¥0 2019/140781 卩(:17(:\2018/080884

The connection between the 14 and the first body 111 may be glued, snapped or screwed.

[0037] Optionally, at least one spoke 16 is disposed on a side surface of the first disc body 111 away from the light conversion layer 12, and the spoke 16 is integrally formed with the first disc body 111 and fixedly connected to the second disc body 112. Between the drive motor 14. In the present embodiment, the number of the spokes 16 is four, and the four spokes 16 are uniformly disposed on one side surface of the first disk body 111 away from the light conversion layer 12. By providing the spokes 16, the connection between the second disk body 12 of the color wheel module 10 and the drive motor 14 can be made stronger.

[0038] When the light beam (usually white light) of the projection light source reaches the light conversion layer 12 of the color wheel, the color region of the light conversion layer 12 that the light beam of the projection light source arrives is different due to the high-speed rotation of the color wheel, and is mixed into The colored light is reflected by the reflective layer 15 to emit the excellent wheel module 10.

In the present embodiment, a plurality of balance members 13 are disposed on the other side surface of the base 11 away from the light conversion layer 12. Further, a plurality of balance members 13 may be disposed on a surface of the second disk body 112 remote from the light conversion layer 12. By arranging the light conversion layer 12 on one side surface of the second disk body 112, the balance member 13 is disposed on the other side surface of the second disk body 112 remote from the light conversion layer 12, enabling the color wheel to emit when performing light conversion The heat is diffused through the base 11 and the balance member 13, thereby improving the heat dissipation capability of the color wheel module 10.

[0040] In this embodiment, the material of the balance member may be metal. In other embodiments, the material of the balance member may be a polymer material, which is not limited in this application.

[0041] Optionally, when the balance member is made of metal, the Brinell hardness of the metal material ranges from 13⁄425 to 200.

For example, the metal material may have a Brinell hardness of 13⁄425, 1^100 or 1^200.

[0042] Optionally, the material of the balance member 13 may be copper, copper, copper alloy or aluminum alloy. In this embodiment, the balance member 13 is made of copper. Alternatively, the material of the balance member 13 may be the same as the material of the base plate 11.

[0043] Optionally, a heat dissipating material may also be coated on the base plate 11 and/or the balance member 13 to further improve the heat dissipation capability of the color wheel module 10. The heat dissipating material may be graphite, a resin composition or the like, which is not limited herein.

[0044] Optionally, the number of the balance members 13 should be at least three, and the balance member 13 is evenly disposed on the surface of the second disk body 112 away from the light conversion layer 12.

[0045] optionally, a balance piece

Between the first directions, the direction from the light conversion layer 12 to the base 11 may be. For example, the length of the balance member 13 in the first direction may be 5111111, 15111111, or 25111111. \¥0 2019/140781 卩(:17(:\2018/080884

In the present embodiment, a plurality of balance members 13 are disposed on the second disk body 112 in an equally spaced circumferential array. In other embodiments, the balance members 13 may be disposed at equal intervals and in a polygonal shape on the surface of the second disk body 112 remote from the light conversion layer 12. The polygon may be a triangle, a quadrangle or a pentagon or the like.

[0047] The balance member 13 is fixedly coupled to the base plate 11. In the present embodiment, the balance member 13 and the base plate 11 are integrally formed. In still another embodiment, the balance member 13 can be threadedly coupled to the base plate 11. For example, the base plate 11 is provided with a groove, the groove is provided with an internal thread, the balance member 13 is provided with an external thread, the external thread is matched with the internal thread, and the balance member 13 and the base plate 11 are threadedly engaged, thereby making the balance member The 13 base disk 11 is fixedly attached to the base plate 11. In another embodiment, the balance member 13 can be welded or snapped onto the base plate 11. The manner in which the balance member 13 is connected to the base 11 is not limited in the present application.

In the present embodiment, the balance member 13 is used to remove the balance member 13 by cutting the balance member 13 when the color wheel module 10 is unbalanced, thereby balancing the color wheel module 10. It should be understood that the trimming balance member 13 may be a partial balance member 13 for trimming a balance member 13, or may be a whole balance member 13 for trimming.

Please refer to FIG. 2. FIG. 2 is a schematic structural diagram of a color wheel module according to a second embodiment of the present application.

In the present embodiment, the balance member of the color wheel module 20 may be a column balance member 23.

[0051] The base 21, the light conversion layer 22, the drive motor 24, and the reflective layer 25 may be the same as the base 11, the light conversion layer 12, the drive motor 14, and the reflective layer 15 in the first embodiment, and details are not described herein. .

[0052] Alternatively, the columnar balance member 23 may be in the shape of a cylinder, a truncated cone, a cone, a prism, a prism or a pyramid. The prism may be a prism such as a triangular prism, a quadrangular prism or a pentagonal prism; the prism may be a triangular prism, a quadrangular prism or a pentagonal prism; the pyramid may be a pyramid such as a triangular pyramid, a quadrangular pyramid or a pentagonal pyramid. It should be understood that when the columnar balance member 23 is in the shape of a cylinder, a circular table, a prism or a prism, both ends thereof may be connected to the base plate 21. When the shape of the columnar balance member 23 is a cone or a pyramid, the bottom surface of the cone or the bottom surface of the pyramid is connected to the base 21.

[0053] Alternatively, the shape of the column balance member 23 may also be a combined shape. For example, the column balance member 23 may be divided into a first segment and a second segment, and the first segment and the second segment are integrally formed, the first segment Connected between the base 21 and the second section, the first section may be in the shape of a cylinder or a truncated cone, the second section may be in the shape of a cone or a hemisphere, or the first section may be in the shape of a prism or a rib, second The shape of the segment can be a pyramid. The shape of the combination is not limited in the embodiment of the present application.

[0054] In the present embodiment, the shape of the columnar balance member 23 is a cylinder. \¥0 2019/140781 卩(:17(:\2018/080884

[0055] optionally, a column balancer

For example, the length of the columnar balance member 23 in the first direction may be 5111111, 10111111, or 15111111. In the present embodiment, the length of the columnar balance member 23 in the first direction is 10111111.

[0056] optionally, a column balance member

For example, the columnar balance member 23 may have a diameter of 1111111, 2111111, or 3111111. In the present embodiment, the columnar balance member 23 has a diameter of 2_1. In other embodiments, the columnar balance member 23 may have other diameters, which is not limited in the application.

[0057] Optionally, the distance between any adjacent column-shaped balance members is greater than 5111111 to improve heat dissipation efficiency.

In the present embodiment, the columnar balance member 23 can be vertically disposed on the base 21.

[0059] In other embodiments, the columnar balance member 23 may be disposed obliquely on the base plate 21. Alternatively, the projection of the columnar balance member 23 on the base plate 21 may be the same as or opposite to the direction of movement of the balance member. By arranging the columnar balance member 23 obliquely on the base plate 21, and the projection of the columnar balance member 23 on the base plate 21 is opposite to the moving direction of the balance member, the resistance of the base plate 21 when rotated can be reduced.

In the present embodiment, a ring-shaped balance member 23 is disposed on the base 21 centering on the center of rotation. The number of the columnar balance members 23 in the one-row columnar balance member 23 is 30 and is set in a diameter range of 50 to 10 〇 111111. For example, the number of columnar balance members 23 in the one-row columnar balance member 23 is 30 and is set by the diameters 50111111, 65111111 or 1001X11X1.

[0061] In another embodiment, a plurality of columnar balance members 23 are disposed on the base 21 centering on the center of rotation. For example, please refer to FIG. 2 & FIG. 2 & FIG. 2 is a schematic structural view of a color wheel module according to another embodiment of the second embodiment of the present application. In this embodiment, the columnar balance member 23 _& 4 sets of ring-shaped balance members 23 _& columnar balance piece 23 is the number 30.

[0062] The columnar balance member 23 can be at least partially removed from the base plate 21 according to the dynamic balance requirement of the color wheel module 20, that is, when the base plate 21 is unbalanced, a portion of the columnar balance member 23 is removed by cutting the columnar balance member 23. To balance the base plate 21. It should be understood that the trimming column-shaped balance member 23 may be a partial column-shaped balance member 23 for cutting a column-shaped balance member 23, or a complete column-shaped balance member 23 may be cut.

[0063] Optionally, a balance adjusting member may be disposed on the column balance member 23, and the balance adjusting member cooperates with the column balance member 23 to adjust the balance adjusting member when the dynamic balance of the color wheel module 20 is not satisfactory. The position on the column balance member 23 is such that the dynamic balance of the color wheel module 20 satisfies the demand. For example, the outer surface of the column balance member 23 may be provided with an external thread, the balance adjusting member may be provided with an internal thread, and the external thread is matched with the internal thread. \¥0 2019/140781 卩(:17(:\2018/080884) The rotation balance adjustment member is used to change the position of the balance adjustment member on the column balance member 23, thereby balancing the color wheel.

Please refer to FIG. 3. FIG. 3 is a schematic structural diagram of a balance member according to a third embodiment of the present application.

In the present embodiment, the balance member of the color wheel module 30 may be a sheet-like balance member 33. The sheet-like balance member 33 is also used to increase the air flow rate around the sheet-like balance member 33 to further improve the heat dissipation efficiency of the color wheel module 30.

In this embodiment, the base 31, the light conversion layer 32, the drive motor 34, and the reflective layer 35 may be the same as the base 11, the light conversion layer 12, the drive motor 14, and the reflective layer 15 in the first embodiment. I will not repeat them here.

[0067] The length of the sheet-like balance member 33 in the first direction may not be constant. In another embodiment, the length of the sheet-like balance member 33 in the first direction may be varied, for example, the length of the sheet-like balance member 33 in the first direction increases or decreases in the second direction, the first The second direction is the direction in which the second disk body points to the first disk body.

[0068] optionally, a sheet balance piece

For example, the length of the sheet-like balance member 33 in the first direction may be 10111111, 15111111, 20111111. In the present embodiment, the length of the sheet-like balance member 33 in the first direction is 15111111. In other embodiments, the length of the sheet-like balance member 33 in the first direction may also be other lengths, which is not limited in the application.

[0069] Optionally, the length of the sheet-like balance member 33 in the first direction is greater than or equal to the length of the columnar balance member 23 in the first direction.

[0070] optionally, a sheet balance piece

For example, the sheet-like balance member 33 may have a thickness of 1111111, 1.5_1 or 2111111. In the present embodiment, the sheet-like balance member 33 has a thickness of 1.5_1. In other embodiments, the thickness of the sheet-like balance member 33 may also be other thicknesses, which is not limited in the application.

[0071] Optionally, the distance between the sheet-like balance members 33 is greater than 5111111 to increase heat dissipation efficiency.

[0072] The sheet-like balance member 33 is vertically disposed on the base 31. In other embodiments, the sheet-like balance member 33 may be disposed obliquely on the base plate 31.

[0073] Alternatively, the shape of the sheet-like balance member 33 may be a rectangle or a curved surface. It should be understood that when the shape of the sheet-like balance member 33 is a rectangle, the projection of the sheet-like balance member 33 on the base plate 31 is a straight line; when the shape of the sheet-like balance member 33 is a curved surface, the sheet-like balance member 33 is on the base plate. The projection on 31 is an arc.

In the present embodiment, the shape of the sheet-like balance member 33 is a curved surface which protrudes in a direction opposite to the moving direction of the sheet-like balance member 33. \¥0 2019/140781 卩(:17(:\2018/080884

[0075] Alternatively, when the shape of the sheet-like balance member 33 is a curved surface, an end of the curved surface away from the drive motor may be tangent to the rotational direction of the sheet-like balance member 33. By tangentially cutting the end of the arc surface away from the drive motor from the rotation direction of the sheet-like balance member 33, the air flow rate between the sheet-like balance members 33 can be maximized, thereby enhancing the heat dissipation effect of the color wheel module 30.

In the present embodiment, a ring-shaped balance member 33 is provided on the base plate 31 centering on the center of rotation. The number of the sheet-shaped balance members 33 in the one-piece sheet-shaped balance member 33 is 30, and is disposed in an annular region in which the inner diameter of the base plate 31 is a first preset value and the outer diameter is a second preset value. between. Optionally, the first preset value range may be

The second preset value range may be 80~1(X)111111. For example, the first preset value may be 50111111, 60111111 or 70111111, and the second preset value may be 80_1, 90111111 or 100111111. In this embodiment, the first preset value is 70111111, and the second preset is 100111111.

[0077] Alternatively, a plurality of sheet-shaped balance members 33 may be disposed on the base plate 31 centering on the center of rotation.

[0078] The sheet-like balance member 33 can be at least partially removed from the base plate 31 according to the dynamic balance requirement of the color wheel module 30, that is, when the base plate 31 is unbalanced, part of the sheet is removed by cutting the sheet-like balance member 33. The balance member 33 is balanced to balance the base plate 31. It should be understood that the cut sheet-like balance member 33 may be a partial sheet-like balance member 33 for cutting one sheet-like balance member 33, or a complete sheet-like balance member 33 may be cut.

[0079] Please refer to FIG. 4. FIG. 4 is a schematic structural diagram of a balance member according to a fourth embodiment of the present application.

[0080] Alternatively, the balance member of the color wheel module 40 may be a combination of a column balance member and a sheet balance member. The sheet balance member 432 is also used to increase the air flow rate around the sheet-like balance member 432 to further improve the heat dissipation efficiency of the color wheel module 30.

[0081] For example, at least two balance members 43 are disposed on the base 41 around the center of rotation, at least one of the at least two balance members 43 is a column balance member 431, and at least one balance member 43 is The sheet-like balance member 43 2 is provided on the outer periphery of the columnar balance member 431.

Alternatively, the base 41, the light conversion layer 42, the drive motor 44, and the reflective layer 45 may be the same as the base 11, the light conversion layer 12, the drive motor 14, and the reflective layer 15 in the first embodiment. The columnar balance member 431 may be the same as the columnar balance member 23 in the second embodiment, and the sheet-like balance member 432 may be the same as the sheet-like balance member 33 in the third embodiment, and will not be described herein.

[0083] In the embodiment, two balance members are disposed on the base 41 with the center of rotation as a center. One balance of the two balance members is a column balance member 431, and one balance member is a sheet balance. Piece 432, sheet balancer 4 \¥0 2019/140781 卩(:17(:\2018/080884

32 is disposed on the periphery of the columnar balance member 431. Specifically, the sheet-like balance member 432 is disposed on the periphery of the column-shaped balance member 4 31, and the sheet-like balance member 432 may be disposed on a side of the column-shaped balance member 431 away from the drive motor 44.

[0084] In another embodiment, two balance members may be disposed on the base 41 centering on the center of rotation. One balance of the two balance members is a column balance member 431, and one balance member is a piece. The balance member 432, the sheet-like balance member 432 and the column-shaped balance member 431 may be disposed at intervals, or the column-shaped balance member may be disposed at the periphery of the sheet-like balance member.

[0085] In still another embodiment, at least three ring balance members may be disposed on the base plate 41 centering on the center of rotation, the at least three ring balance members including at least one ring of columnar balance members 431 and at least one ring-like balance. The sheet-shaped balance member 432 is disposed on the outer periphery of the column-shaped balance member 431, or the column-shaped balance member 431 is disposed on the outer periphery of the sheet-like balance member 432, or the sheet-like balance member 432 and the column-shaped balance member 431 are spaced apart from each other. . In other embodiments, a balance can be placed on the base 41 centering on the center of rotation.

In the embodiment, by setting the balance member of the color wheel module 40 as a combination of the column balance member 431 and the sheet balance member 432, at least part of the column shape can be selected according to the dynamic balance requirement of the color wheel module 40. The balance member 431 and/or the sheet-like balance member 432 are removed from the base plate 41 to meet the dynamic balance requirements of the color wheel module 40.

[0087] Optionally, in the embodiment, removing at least a portion of the columnar balance member 431 and/or the sheet-like balance member 432 from the base plate 41 may preferentially remove a portion of the columnar balance member 431, and preferentially remove a portion of the piece. The balance member 432 or both the partial balance member 431 and the partial sheet balance member 432 are simultaneously removed.

Please refer to FIG. 5. FIG. 5 is a schematic structural diagram of a projection apparatus of the present application.

[0089] Projection device 50 color wheel module 51, the color wheel module 51 may be the color wheel module 51 in any of the above embodiments.

[0090] Different from the prior art, the color wheel module of the present application includes: a base plate, a light conversion layer and a plurality of balance members, wherein the light conversion layer covers one side surface of the base plate; The other side surface of the base plate remote from the light conversion layer is spaced apart from the center of rotation of the base plate, wherein the balance member can be at least partially removed from the base plate according to the dynamic balance requirement of the color wheel module, and the plurality of balance members are further It is used to increase the heat dissipation area of the color wheel module to improve the heat dissipation efficiency of the color wheel module. Since the balance member can be at least partially removed from the base plate according to the dynamic balance requirement of the color wheel module, the movement of the color wheel module can be made by removing part of the balance member when the dynamic balance of the color wheel module is not satisfactory. The balance meets the demand. Further, since the plurality of balance members are disposed on the base plate, the base plate and the balance member can dissipate heat from the color wheel module, and the color wheel module is enlarged. \¥0 2019/140781 卩(:17(:\2018/080884) The heat dissipation area improves the heat dissipation efficiency of the color wheel module.

The above description is only the embodiment of the present application, and thus does not limit the scope of the patent application, and the equivalent structure or equivalent process transformation made by using the specification and the drawings of the present application, or directly or indirectly applied to other The related technical fields are all included in the scope of patent protection of the present application.

[0092]

Claims

\¥0 2019/140781 卩(:17(:\2018/080884 Claims)

[Claim 1] 1. A color wheel module, wherein the color wheel module comprises:

Base plate

a light conversion layer, the light conversion layer covering a side surface of the base;

a plurality of balance members disposed on the other side surface of the base plate remote from the light conversion layer and spaced apart around a rotation center of the base plate, wherein the balance member can be The dynamic balance requirement of the color wheel module is at least partially removed from the base plate, and the plurality of balance members are further configured to increase a heat dissipation area of the color wheel module.

[Claim 2] The color wheel module according to claim 1, wherein the color wheel module further comprises a reflective layer, and the reflective layer is disposed on the light conversion layer and the base plate between.

[Claim 3] The color wheel module according to claim 1, wherein the color wheel module further comprises a driving motor, wherein the driving motor is configured to drive the base plate to rotate; The disk includes a first disk body at the center of rotation, a second disk body disposed around the first disk body, the first disk body is for setting the driving motor, and the second disk body is for setting The balance member.

[Claim 4] The color wheel module according to claim 1, wherein the balance member and the base plate are integrally formed, and the balance member is made of metal, and the metal material is cloth. The hardness range is 13⁄425~200.

[Claim 5] The color wheel module according to claim 1, wherein the plurality of balance members are disposed on the second disk body in an equally spaced circumferential array.

[Claim 6] The color wheel module according to claim 1, wherein the balance member comprises at least one or a combination of a columnar balance member and a sheet-like balance member, wherein the sheet shape The balance member is also used to increase the air flow rate around the sheet-like balance member to further improve the heat dissipation efficiency of the color wheel module.

[Claim 7] The color wheel module according to claim 6, wherein at least two of the balance members are disposed on the base plate centering on the rotation center, and the at least two At least one turn of the balance member is the column balance member, and at least one turn of the balance member is the sheet-like balance member, and the sheet-like balance member is disposed on the column-shaped balance member periphery \¥0 2019/140781 卩(:17(:\2018/080884

[Claim 8] The color wheel module according to claim 6 or 7, wherein the length of the columnar balance member in the first direction ranges from 5111111 to 15111111, and the diameter of the columnar balance member Range is

The distance between any adjacent columnar balance members is greater than 5111111, wherein the first direction is a direction from the light conversion layer to the base plate.

[Claim 9] The color wheel module according to claim 8, wherein the length of the sheet-shaped balance member in the first direction is

The length of the sheet-like balance member in the first direction is greater than or equal to the length of the column-shaped balance member in the first direction, and the thickness of the sheet-like balance member ranges from

The distance between any adjacent sheet-like balance members is greater than 5111111.

[Claim 10] 10. A projection apparatus, comprising: the color wheel module according to any one of claims 1-9.