WO2019114119A1 - 一种色轮装置及投影设备 - Google Patents

一种色轮装置及投影设备 Download PDF

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Publication number
WO2019114119A1
WO2019114119A1 PCT/CN2018/074733 CN2018074733W WO2019114119A1 WO 2019114119 A1 WO2019114119 A1 WO 2019114119A1 CN 2018074733 W CN2018074733 W CN 2018074733W WO 2019114119 A1 WO2019114119 A1 WO 2019114119A1
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WO
WIPO (PCT)
Prior art keywords
filter
color wheel
wheel device
wavelength conversion
conversion layer
Prior art date
Application number
PCT/CN2018/074733
Other languages
English (en)
French (fr)
Inventor
戴达炎
李屹
Original Assignee
深圳光峰科技股份有限公司
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Application filed by 深圳光峰科技股份有限公司 filed Critical 深圳光峰科技股份有限公司
Publication of WO2019114119A1 publication Critical patent/WO2019114119A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings

Definitions

  • the present invention relates to the field of projection technology, and in particular, to a color wheel device and a projection device.
  • the color wheel is generally applied to an illumination device or an image forming device as an optical beam splitting unit, which is rotated by driving of the driving unit, so that different color regions on the color wheel correspond to light emitted by the light source to generate light of a corresponding color.
  • the color wheel is a combination of red, green, blue, white and other color separation filters, which can separate the transmitted white light and rotate it by a high-speed motor, and then sequentially separate the different monochromatic lights. On the designated light path, finally, a full-color image is synthesized and projected through other optical components.
  • the color wheel device currently available on the market comprises: a driving member, a filter, a heat dissipating component and a wavelength conversion layer; wherein the filter is disposed around the axis of the driving member, the heat dissipating component is disposed around the filter, and the heat dissipating component comprises a connecting portion connected to the outer peripheral wall of the filter and an annular mounting portion extending outward from the connecting portion, the wavelength conversion layer is disposed on the annular mounting portion, and the end wall of the connecting portion is attached to the flat surface of the fixed filter, that is, the heat dissipating component
  • a stacking arrangement is adopted between the filter and the filter, or the connecting portion has an annular groove, and the connecting portion is snapped on the outer edge of the filter through the annular groove, and then the dispensing operation is completed in the annular groove, that is, the heat dissipating component and the filtering
  • the card is set between the slices.
  • the coupling degree to the connecting portion needs to be high. Process requirements.
  • the connecting portion is attached to the outer edge of the filter through the annular groove, on the one hand, the dispensing process is complicated, and on the other hand, the filter is inconvenient to be mounted to the connecting portion.
  • the invention provides a color wheel device and a projection device, which can reduce the process requirement of the coupling degree of the connecting portion, is convenient for dispensing, and the filter is convenient to be mounted to the connecting portion.
  • the present invention adopts a technical solution to provide a color wheel device, comprising: a driving member; a filter disposed around an axis of the driving member; and a heat dissipating component surrounding the filter Provided, comprising a stepped connection, a side wall of the stepped connection being connected to an outer peripheral wall of the filter, an end wall of the stepped connection being connected to a flat surface of the filter; A conversion layer is disposed on the heat dissipation component.
  • the flat surface of the filter is a side facing away from the wavelength conversion layer.
  • the color wheel device further includes a diffuse reflection layer disposed between the wavelength conversion layer and the heat dissipation component.
  • the filter is disposed on the driving member, and the driving member drives the filter to rotate.
  • the color wheel device further includes a drive adapter for connecting the filter and the driving member.
  • a surface of the heat dissipation component facing away from the wavelength conversion layer is provided with a protrusion.
  • the protrusion is an annular protrusion and is disposed concentrically with the filter
  • the protrusion is a columnar protrusion and is plural, and the plurality of columnar protrusions are distributed along a ring concentric with the filter;
  • the protrusions are a plurality of sheet-like protrusions, wherein a plurality of the sheet-like protrusions are on one end of the heat dissipation assembly toward the inner side of the filter, and the other end is along the filter.
  • the sheets extend radially outward; or a plurality of the sheet-like protrusions are uniformly distributed in the circumferential direction of the heat dissipating component, and a plurality of annular protrusion groups having different diameters are formed.
  • the wavelength conversion layer is disposed on a ceramic board.
  • the heat dissipating component is an aluminum sheet
  • the wavelength conversion layer is a phosphor coating
  • the heat dissipating component is an integral annular body.
  • another technical solution adopted by the present invention is to provide a projection apparatus including the color wheel device as described above.
  • the invention has the beneficial effects that the present invention provides a color wheel device in which the heat dissipating component in the color wheel device comprises a stepped connecting portion, the side wall of the stepped connecting portion and the filter are different from the prior art.
  • the outer peripheral wall is connected, and the end wall of the stepped connecting portion is connected to the flat surface of the filter. Since the side wall and the end wall of the stepped connection portion are both connected to the filter, compared with the prior art, only the end wall is connected to the filter, the solution increases the contact area between the heat dissipation component and the filter, thereby The process requirement that the heat dissipating component and the filter can be easily and firmly connected, thereby reducing the degree of coupling of the connecting portion.
  • the heat dissipating component and the filter can be directly connected by a glue, and the ring groove is required to be connected with the existing card connection mode.
  • the solution is convenient for dispensing, and the filter is also easy to install. Connection.
  • FIG. 1 is a schematic structural view of a color wheel device according to an embodiment of the present invention.
  • FIG. 2 is another schematic structural view of a color wheel device according to an embodiment of the present invention.
  • FIG. 3 is another schematic structural view of a color wheel device according to an embodiment of the present invention.
  • FIG. 4 is another schematic structural view of a color wheel device according to an embodiment of the present invention.
  • a color wheel device in an embodiment of the invention, includes a driving member 1, a filter 2, a heat dissipating component 3, and a wavelength conversion layer 4.
  • the driving component 1 can be a motor, and the driving component 1 is directly connected to the filter 2, and the driving component 1 can be connected to the flat surface of the filter 2, for example, the driving component 1 can be converted to the wavelength of the filter 2 from the back side.
  • One side of the layer 4 is connected, and the driving member 1 can also be connected to one side of the filter 2 facing the wavelength conversion layer 4.
  • the filter 2 is disposed around the axis of the driving member 1, and the filter 2 may be a disk-shaped filter composed of a plurality of sector structures.
  • the filter 2 is directly connected to the heat dissipating component 3 and the driving member 1, and the filter 2 can be used for both optical filtering and structural adapters.
  • the heat dissipating component 3 is disposed around the filter 2, that is, the heat dissipating component 3 may be on the outer circumference of the filter 2 to form an annular body disposed around the filter 2, and a portion of the annular body is overlapped with the filter 2.
  • the heat dissipating unit 3 includes a stepped connecting portion, and a side wall of the stepped connecting portion is connected to an outer peripheral wall of the filter 2, and an end wall of the stepped connecting portion is connected to a flat surface of the filter 2.
  • the wavelength conversion layer 4 is disposed on the heat dissipation assembly 3.
  • the heat dissipating component 3 in the color wheel device includes a stepped connecting portion, and the side wall of the stepped connecting portion is connected to the outer peripheral wall of the filter 2, and the end wall of the stepped connecting portion and the filter 2 Flat surface connection. Since the side wall and the end wall of the stepped connection portion are both connected to the filter 2, only the end wall is connected to the filter 2 in the existing stacked arrangement, the solution increases the contact area between the heat dissipation component and the filter. Therefore, the heat dissipation component and the filter can be easily and firmly connected, and the process requirement of the degree of coupling of the connection portion can be reduced.
  • the heat dissipating component 3 and the filter 2 can be directly connected by a glue, and the ring groove is required to be connected with the existing card connection setting mode.
  • the solution is convenient for dispensing, and the filter is also convenient. Installed to the connection.
  • the filter 2 since the filter 2 is directly connected to the driving member 1, the filter 2 can be used both for optical filtering and as a structural adapter, thereby reducing the area or volume of the color wheel and reducing The load weight extends the service life of the drive member 1.
  • FIG. 2 is a schematic diagram of another embodiment of a color wheel device according to an embodiment of the present invention. Since the filter 2 is placed above the heat dissipating component 3, the space below the heat dissipating component 3 shown in FIG. 2 is larger than the space below the heat dissipating component 3 shown in FIG. 1, so that the heat dissipating blade below the heat dissipating component 3 can be The larger area is set, and the heat dissipation capability of the color wheel is further improved.
  • the color wheel device may further include a diffuse reflection layer 5 disposed on the wavelength conversion layer 4 and the heat dissipation component.
  • the illumination on the wavelength conversion layer 4 belongs to Lambertian light
  • the diffuse reflection layer 5 does not require an incident angle of the Lambertian light.
  • the diffuse reflection layer 5 can maintain all of the Lambertian light. The incident angle reaches the same reflectivity.
  • the diffuse reflection material of the diffuse reflection layer 5 has a high reflectance and a low cost, so that the cost can be controlled.
  • the diffuse reflection material is made of high reflectivity material such as silver
  • the high reflectivity material will be vulcanized after long-term use, such as black silver sulfide, so inorganic diffuse reflective materials are generally used because of the weather resistance of inorganic diffuse reflective materials. And temperature resistance does not change during long-term use.
  • the material of the heat dissipating component 3 only needs to consider thermal conductivity and structural processing performance, and does not need to consider optical parameters such as reflectivity.
  • the filter 2 is disposed on the driving member 1, and the driving member 1 drives the filter 2 to rotate.
  • the driving member 1 can be connected to the flat surface of the filter 2, for example, the driving member 1 can be connected to one side of the filter 2 facing away from the wavelength conversion layer 4, and the driving member 1 can also be converted to the wavelength of the filter 2.
  • One side of the layer 4 is connected.
  • the filter 2 is directly connected to the driving member 1, but in some possible embodiments, the filter 2 and the driving member 1 may not be directly connected.
  • the color wheel device further includes a drive adapter 6 for connecting the filter 2 and the driving member 1.
  • the driving member 1 drives the driving adapter 6 to rotate, and also drives the rotation of the filter 2.
  • the heat dissipating component 3 is annular, and a side on which the wavelength conversion layer 4 is not disposed may be provided with a heat dissipating structure, such as protrusions of various shapes for assisting heat dissipation, specific shapes of the protrusions, setting positions, and The number is not limited as long as the heat dissipation component 3 and the filter 2 are integrally rotated and balanced. It can be understood that the heat dissipation area of the heat dissipation component 3 can be increased by providing the protrusions, so that the heat of the wavelength conversion layer 4 can be forcedly convected into the air through the heat dissipation component 3, thereby improving the heat dissipation efficiency of the wavelength conversion layer 4.
  • a protrusion 7 which may be an annular protrusion and has a plurality of annular protrusions and is disposed concentrically with the filter 2 .
  • the annular protrusion has a large heat dissipation area and a good heat dissipation effect.
  • the annular protrusion is disposed concentrically with the filter 2, which is easy to ensure the balance when the filter is rotated, and the air filter 2 has small air resistance and low noise when it is rotated.
  • a plurality of annular protrusions are spaced along the center to the outer edge of the filter 2 such that an annular wind groove is formed between the adjacent two annular protrusions to improve the heat dissipation effect.
  • the number of turns of the annular protrusions disposed around the center of the circle can be set according to practical applications. For example, the number of turns of the annular protrusion can be set to one, two, three, four, five, and the like.
  • the outer edge of the filter 2 below refers to the outer edge portion of the filter 2 away from its center.
  • the height of the protrusions of the plurality of annular projections on the filter 2 is decreased from the center to the outer edge of the filter 2. In this way, it is ensured that the annular protrusion near the center of the filter 2 can also be more fully contacted with the air to dissipate heat, thereby improving the heat dissipation effect and ensuring uniform heat dissipation throughout the filter 2.
  • the protrusions 7 may also be cylindrical protrusions, and the plurality of column protrusions have a large amount of heat dissipation, wherein the columnar protrusions are convenient for molding.
  • each of the cylindrical protrusions may be evenly disposed around the center of the filter 2 to ensure the balance of the rotation of the filter 2 and the balance of heat dissipation of the filter 2.
  • the protrusions 7 may also be sheet-like protrusions and are plural. Each of the sheet-like protrusions is disposed at an outer edge of the filter 2 at one end of the heat dissipating component 3, and the other end extends toward a center of the center of the filter 2 in a radial direction thereof.
  • the sheet-like protrusions may be straight or curved, and are not limited herein.
  • the shape of the protrusions may have a certain degree of curvature, and the protrusions of the curved structure are arranged on the filter 2 in a similar manner. In the vortex shape, during the rotation of the filter 2, more airflow can be driven, so that the heat on the filter 2 can be carried away by the airflow in time, thereby improving the heat dissipation effect.
  • the shape of the protrusions 7 is also a sheet-like protrusion, and is plural.
  • the arrangement on the filter 2 is different.
  • the plurality of sheet-like protrusions are uniformly distributed in the circumferential direction of the heat dissipation assembly 3, and one or more annular protrusion groups having different diameters are formed.
  • the protrusions of the structure are uniformly distributed on the filter 2, and during the rotation of the filter 2, more airflow can be driven, so that the heat on the filter 2 is carried away by the airflow, thereby improving the heat dissipation effect.
  • the sheet-like convex portions in the two inner annular groups of the adjacent annular protrusions are all staggered to balance the heat dissipation of the entire heat dissipation assembly 3.
  • the wavelength conversion layer 4 may be formed by mounting a carrier coated with a phosphor on the heat dissipation component 3, or the wavelength conversion layer 4 may be mounted on the diffuse reflection by a carrier coated with a phosphor.
  • the layer 5 is formed, wherein the carrier may be a ceramic plate, the ceramic plate is fixed on the heat dissipating component 3 by a bonding method, or the ceramic plate is fixed on the diffuse reflection layer 5 by a bonding method.
  • the heat dissipation component 3 may be an aluminum sheet, and the wavelength conversion layer 4 may be a phosphor coating.
  • the side wall of the stepped connecting portion may be connected to the outer peripheral wall of the filter 2 by double-sided tape or glue, and the end wall of the stepped connecting portion may also pass through double-sided tape or glue and filter. 2 flat surface connection.
  • the heat dissipating component 3 is provided as an integral annular body, thereby providing an obstruction force in the centrifugal force direction, thereby reducing the centrifugal force received by the heat dissipating component 3, thereby enabling Process requirements to reduce the degree of coupling of the joints.
  • the present invention also provides a projection device, which may be an educational projector, a laser television, a micro-projection or a cinema machine, etc., the projection device includes the color wheel device of the above embodiment, and the specific structure of the projection device refers to the above embodiment. Since all the technical solutions of all the above embodiments are adopted in the present disclosure, at least all the beneficial effects brought by the technical solutions of the foregoing embodiments are not repeatedly described herein.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Projection Apparatus (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)

Abstract

一种色轮装置及投影设备，色轮装置包括：驱动件、环绕驱动件的轴心设置的滤光片、环绕滤光片设置的散热组件和设置于散热组件上的波长转换层，散热组件包括阶梯状连接部，阶梯状连接部的侧壁与滤光片的外周壁连接，阶梯状连接部的端壁与滤光片的平板面连接。能够降低连接部的耦合程度的工艺要求，点胶方便，使滤光片便于安装到连接部。

Description

一种色轮装置及投影设备 技术领域
本发明涉及投影技术领域，尤其涉及一种色轮装置及投影设备。
 
 背景技术
色轮一般是应用于照射装置或影像形成装置以作为光学分光单元，其借由驱动单元的驱动而进行转动，以使色轮上的不同颜色区域对应光源所发出的光进而产生对应颜色的光来达到分光效果。一般来说，色轮是由红、绿、蓝、白等分色滤光片的组合，可将透过的白光进行分色，并通过高速马达使其转动，然后顺序分出不同单色光于指定的光路上，最后经由其它光机元件合成并投射出全彩影像。
目前市面上所提供的色轮装置包括：驱动件、滤光片、散热组件及波长转换层；其中，滤光片环绕驱动件的轴心设置，散热组件环绕滤光片设置，且散热组件包括与滤光片的外周壁连接的连接部以及自连接部向外延伸的环形安装部，波长转换层设置在环形安装部，连接部的端壁贴合固定滤光片的平板面，即散热组件和滤光片之间采用层叠设置方式，或连接部具有环形槽，连接部通过环形槽卡接在滤光片的外边缘上，再在环形槽中完成点胶操作，即散热组件和滤光片之间采用卡接设置方式。
 技术问题
然而，上述层叠设置方式中，当驱动件带动滤光片高速转动时，为了保证与滤光片连接的散热组件不会因为受到的离心力过大而脱离，针对连接部的耦合程度需要很高的工艺要求。上述卡接设置方式中，由于连接部通过环形槽卡接在滤光片的外边缘上，一方面点胶工艺复杂，另一方面滤光片不便于安装到连接部。
 
 技术解决方案
本发明提供了一种色轮装置及投影设备，能够降低连接部的耦合程度的工艺要求，点胶方便，滤光片便于安装到连接部。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种色轮装置，包括：驱动件；滤光片，环绕所述驱动件的轴心设置；散热组件，环绕所述滤光片设置，其包括阶梯状连接部，所述阶梯状连接部的侧壁与所述滤光片的外周壁连接，所述阶梯状连接部的端壁与所述滤光片的平板面连接；波长转换层，设置于所述散热组件上。
进一步的，所述滤光片的平板面为背向所述波长转换层的一面。
进一步的，所述色轮装置还包括漫反射层，所述漫反射层设置于所述波长转换层与所述散热组件之间。
进一步的，所述滤光片设置于所述驱动件上，所述驱动件驱动时带动所述滤光片转动。
进一步的，所述色轮装置还包括用于连接所述滤光片和驱动件的驱动转接件。
进一步的，所述散热组件背向所述波长转换层的一面上设置有凸起。
进一步的，所述凸起为环形凸起，且与所述滤光片同心圆设置；
或者，所述凸起为柱状凸起，且为多个，多个所述柱状凸起沿与所述滤光片同心的圆环分布；
或者，所述凸起为片状凸起，且为多个；其中，多个所述片状凸起在所述散热组件上一端朝向所述滤光片的内侧，另一端沿所述滤光片的径向向外延伸；或者，多个所述片状凸起沿所述散热组件的周向环形均布，且形成多个直径不同的环形凸起组。
进一步的，所述波长转换层设置在一陶瓷板上。
进一步的，所述散热组件为铝片，所述波长转换层为荧光粉涂层。
进一步的，所述散热组件为整体的环形体。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一个投影设备，其包括如上所述的色轮装置。
 
 有益效果
本发明的有益效果是：区别于现有技术的情况，本发明提供一种色轮装置，色轮装置中的散热组件包括阶梯状连接部，该阶梯状连接部的侧壁与滤光片的外周壁连接，该阶梯状连接部的端壁与滤波片的平板面连接。由于阶梯状连接部的侧壁和端壁均与滤光片连接，相对于现有层叠设置方式中仅端壁与滤光片连接，本方案增加了散热组件与滤光片的接触面积，从而能够容易地牢固连接散热组件与滤光片，进而能够降低连接部的耦合程度的工艺要求。此外，本方案中散热组件与滤光片之间可以直接通过点胶连接，相对于现有卡接设置方式中需要借助环形槽卡接，显然本方案点胶方便，滤光片也便于安装到连接部。
 
 附图说明
为了更清楚地说明本发明中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本发明实施例中色轮装置的一个结构示意图；
图2为本发明实施例中色轮装置的另一结构示意图；
图3为本发明实施例中色轮装置的另一结构示意图；
图4为本发明实施例中色轮装置的另一结构示意图。
 
 本发明的实施方式
应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
本发明提供一种色轮装置及投影设备，以解决现有技术中针对连接部的耦合程度需要很高的工艺要求，点胶工艺复杂及滤光片不便于安装到连接部的问题。请参阅图1，在本发明一实施例中，色轮装置包括驱动件1、滤光片2、散热组件3以及波长转换层4。
具体地，驱动件1可以为马达，驱动件1直接连接滤光片2，驱动件1可以与滤光片2的平板面连接，例如，驱动件1可以与滤光片2的背向波长转换层4的一面连接，驱动件1也可以与滤光片2的面向波长转换层4的一面连接。滤光片2环绕驱动件1的轴心设置，滤光片2可以为多个扇形结构组成的圆盘形滤光片。滤光片2直接连接散热组件3以及驱动件1，滤光片2既可以起到光学滤光作用，又可以当作结构转接件使用。散热组件3环绕滤光片2设置，即散热组件3可以是处于滤光片2外圆周上，形成环绕滤光片2设置的环形体，该环形体的部分与滤光片2叠置。该散热组件3包括阶梯状连接部，该阶梯状连接部的侧壁与滤光片2的外周壁连接，阶梯状连接部的端壁与滤光片2的平板面连接。波长转换层4设置于散热组件3上。
本实施例中，色轮装置中的散热组件3包括阶梯状连接部，该阶梯状连接部的侧壁与滤光片2的外周壁连接，该阶梯状连接部的端壁与滤波片2的平板面连接。由于阶梯状连接部的侧壁和端壁均与滤光片2连接，相对于现有层叠设置方式中仅端壁与滤光片2连接，本方案增加了散热组件与滤光片的接触面积，从而能够容易地牢固连接散热组件与滤光片，进而能够降低连接部的耦合程度的工艺要求。此外，本方案中散热组件3与滤光片2之间可以直接通过点胶连接，相对于现有卡接设置方式中需要借助环形槽卡接，显然本方案点胶方便，滤光片也便于安装到连接部。
其次，由于滤光片2与驱动件1直接连接，所以滤光片2既可以起到光学滤光作用，又可以当作结构转接件使用，从而减小了色轮面积或体积，并降低了负载重量，延长了驱动件1的使用寿命。
上述图1所示实施例中滤光片2的平板面为面向波长转换层4的一面，但在一些可能的实施例中，滤光片2的平板面还可以为背向波长转换层4的一面，请参阅图2，图2为本发明实施例中色轮装置的另一实施例示意图。由于滤光片2放置于散热组件3上方，所以图2所示中的散热组件3的下方空间比图1所示中的散热组件3的下方空间更大，所以散热组件3下方的散热叶片可以设置更大的面积，进而色轮的散热能力得到进一步提升。
在上述图1所示实施例的基础上，请参阅图3，在一些可能的实施例中，色轮装置还可以包括漫反射层5，该漫反射层5设置于波长转换层4与散热组件3之间。需要注意的是，首先，波长转换层4上的发光属于朗伯光，漫反射层5对朗伯光的入射角没有要求，朗伯光入射后，漫反射层5可以保持朗伯光的所有入射角度达到相同的反射率。其次，漫反射层5的漫反射材料的反射率高，且成本低，所以能够控制成本。再次，若漫反射材料采用银等高反射率材料，长期使用后这种高反射率材料会被硫化，如产生黑色的硫化银，所以一般采用无机漫反射材料，因为无机漫反射材料的耐侯性和耐温性在长期使用过程中不会发生变化。最后，由于增加了漫反射层5，散热组件3的材质只需要考虑导热性能和结构加工性能，而不需要考虑反射率等光学参数。
在上述图1所示实施例的基础上，在一些可能的实施例中，上述滤光片2设置于驱动件1上，驱动件1驱动时带动滤光片2转动。驱动件1可以与滤光片2的平板面连接，例如，驱动件1可以与滤光片2的背向波长转换层4的一面连接，驱动件1也可以与滤光片2的面向波长转换层4的一面连接。
上述实施例中，滤光片2与驱动件1直接连接，但在一些可能的实施例中，滤光片2与驱动件1也可以不直接连接。具体的，请参阅图4，在一些可能的实施例中，色轮装置还包括用于连接滤光片2与驱动件1的驱动转接件6。驱动件1带动驱动转接件6转动的同时，也带动了滤光片2的转动。
在一些可能的实施例中，散热组件3呈环形，且其未设置波长转换层4的一侧可设置散热结构，例如各种形状的凸起进行辅助散热，凸起的具体形状，设置位置和数量不限，只要能保证散热组件3和滤光片2整体转动平衡即可。可以理解的是，通过设置凸起能够提高散热组件3的散热面积，使波长转换层4的热量能够通过散热组件3强制对流至空气中，提高波长转换层4的散热效率。具体的，散热组件3背向波长转换层4的一面上设置有凸起7，凸起7可以为环形凸起，且为多个，环形凸起且与滤光片2同心圆设置。环形凸起散热面积大，散热效果好。环形凸起与滤光片2同心圆设置，易于保证滤光片转动时的平衡性，且使得滤光片2在转动时，空气阻力小，噪音低。
另外，，多个环形凸起沿滤光片2的圆心至外边缘间隔分布，这样相邻两环形凸起之间形成环形风槽，提高散热效果。围绕圆心设置的环形凸起的圈数可根据实际应用进行设定，例如，环形凸起的圈数可以设置一圈、二圈、三圈、四圈、五圈 等。需要说明的是，以下滤光片2的外边缘是指滤光片2远离其圆心的外沿部分。
此外，还可进一步设置多个环形凸起在滤光片2上的凸起高度自滤光片2的圆心至外边缘递减。这样，可以保证靠近滤光片2圆心位置的环形凸起也能与空气较充分的接触散热，提高散热效果的同时，保证滤光片2各处散热较均匀。
需要说明的是，在一些可能的实施例中，凸起7还可以为柱形凸起，且为多个，多个柱形凸起散热量大，其中柱形凸起方便成型。此外，可进一步地将各个呈柱形凸起均匀环绕滤光片2的圆心设置，以保证滤光片2转动的平衡性，以及滤光片2散热的均衡性。
需要说明的是，在一些可能的实施例中，凸起7还可以为片状凸起，且为多个。其中，各个片状凸起在散热组件3上一端设于滤光片2的外边缘，另一端沿滤光片2的径向向其圆心延伸。片状凸起可以是直条型，也可以是弧形，此处并不限制，凸起形状可以为具有一定弧度，这种弧形结构的凸起在滤光片2上的排布方式类似于涡旋状，在滤光片2转动的过程中，能够带动更多的气流流动，进而使滤光片2上的热量能及时被气流带走，提高散热效果。
需要说明的是，在一些可能的实施例中，凸起7的形状也为片状凸 起，且为多个。不同的是，在滤光片2上的排布方式不同，具体地，多个片状凸起沿散热组件3的周向环形均布，且形成一个或者多个直径不同的环形凸起组。这种结构的凸起在滤光片2上分布均匀，在滤光片2转动的过程中，能够带动较多的气流流动，进而使滤光片2上的热量被气流带走，提高散热效果。还可以进一步优化的是，内外相邻的两环形凸起组中的片状凸起部分或者全部错开设置，以使整个散热组件3散热均衡。
在一些可能的实施例中，波长转换层4可以为通过涂设有荧光粉的载体安装于散热组件3上形成，或波长转换层4还可以为通过涂设有荧光粉的载体安装于漫反射层5上形成，其中载体可以为陶瓷板，陶瓷板通过贴合方式固定在散热组件3上，或陶瓷板通过贴合方式固定在漫反射层5上。
在一些可能的实施例中，散热组件3可以为铝片，波长转换层4可以为荧光粉涂层。
在上述各实施例中，阶梯状连接部的侧壁可以通过双面胶或胶水与滤光片2的外周壁连接，阶梯状连接部的端壁也可以通过双面胶或胶水与滤光片2的平板面连接。
在上述各实施例中，为了进一步降低连接部的耦合程度的工艺要求，散热组件3设置为整体的环形体，从而在离心力方向上设置阻碍力，能够减少散热组件3所受的离心力，进而能够降低连接部的耦合程度的工艺要求。
本发明还提出一种投影设备，该投影设备可以是教育投影仪、激光电视、微投 或者影院机等，该投影设备包括上述实施例的色轮装置，该投影设备的具体结构参照上述实施例，由于本投影设备采用了上述所有实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。
 

Claims (11)

1、一种色轮装置，其特征在于，包括：
驱动件；
滤光片，环绕所述驱动件的轴心设置；
散热组件，环绕所述滤光片设置，其包括阶梯状连接部，所述阶梯状连接部的侧壁与所述滤光片的外周壁连接，所述阶梯状连接部的端壁与所述滤光片的平板面连接；
波长转换层，设置于所述散热组件上。
2、根据权利要求1所述的色轮装置，其特征在于，所述滤光片的平板面为背向所述波长转换层的一面。
3、如权利要求1所述的色轮装置，其特征在于，所述色轮装置还包括漫反射层，所述漫反射层设置于所述波长转换层与所述散热组件之间。
4、如权利要求1所述的色轮装置，其特征在于，所述滤光片设置于所述驱动件上，所述驱动件驱动时带动所述滤光片转动。
5、如权利要求1所述的色轮装置，其特征在于，所述色轮装置还包括用于连接所述滤光片和驱动件的驱动转接件。
6、如权利要求1至5任一项所述的色轮装置，其特征在于，所述散热组件背向所述波长转换层的一面上设置有凸起。
7、如权利要求6所述的色轮装置，其特征在于，所述凸起为环形凸起，且与所述滤光片同心圆设置；
或者，所述凸起为柱状凸起，且为多个，多个所述柱状凸起沿与所述滤光片同心的圆环分布；
或者，所述凸起为片状凸起，且为多个；其中，多个所述片状凸起在所述散热组件上一端朝向所述滤光片的内侧，另一端沿所述滤光片的径向向外延伸；或者，多个所述片状凸起沿所述散热组件的周向环形均布，且形成多个直径不同的环形凸起组。
8、如权利要求1至5任一项所述的色轮装置，其特征在于，所述波长转换层设置在一陶瓷板上。
9、如权利要求1至5任一项所述的色轮装置，其特征在于，所述散热组件为铝片，所述波长转换层为荧光粉涂层。
10、如权利要求1至5任一项所述的色轮装置，其特征在于，所述散热组件为整体的环形体。
11、一种投影设备，其特征在于，包括如权利要求1至10任意一项所述的色轮装置。
 
 
PCT/CN2018/074733 2017-12-12 2018-01-31 一种色轮装置及投影设备 WO2019114119A1 (zh)

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