WO2021179768A1 - 色轮散热装置及其投影设备 - Google Patents

色轮散热装置及其投影设备 Download PDF

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Publication number
WO2021179768A1
WO2021179768A1 PCT/CN2020/142131 CN2020142131W WO2021179768A1 WO 2021179768 A1 WO2021179768 A1 WO 2021179768A1 CN 2020142131 W CN2020142131 W CN 2020142131W WO 2021179768 A1 WO2021179768 A1 WO 2021179768A1
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WIPO (PCT)
Prior art keywords
heat dissipation
color wheel
cavity
housing
opening
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PCT/CN2020/142131
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English (en)
French (fr)
Inventor
刘鹏程
陈永壮
戴达炎
郭祖强
胡飞
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深圳光峰科技股份有限公司
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Publication of WO2021179768A1 publication Critical patent/WO2021179768A1/zh

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    • 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
    • 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

Definitions

  • the utility model relates to the field of color wheel heat dissipation, in particular to a color wheel heat dissipation device and projection equipment thereof.
  • the color wheel is an important device in the projector.
  • the brightness of the laser is constantly increasing, and the heat generated by exciting the fluorescence on the fluorescent wheel is also increasing. Because the bearing of the color wheel motor is limited in high temperature, if this part of the heat is not dissipated in time, the motor shaft will overheat, which will seriously affect the life of the color wheel and cause the projector to malfunction. Therefore, set the color wheel on the color wheel.
  • the wheel heat dissipation device facilitates the heat dissipation of the color wheel.
  • the color wheel heat dissipation device is equipped with a water cooling system to realize the heat dissipation of the color wheel by means of sealed water cooling; while for a slightly lower brightness projector, the color wheel heat dissipation device is equipped with a radiator and a fan It is arranged inside the color wheel heat dissipation device to enhance the internal air flow, and the radiator absorbs the heat in the internal air and radiates the heat to the outside to realize the heat dissipation of the color wheel.
  • the purpose of the utility model is to provide a color wheel heat dissipation device and its projection equipment with simple structure and good heat dissipation effect.
  • the present invention provides a color wheel heat dissipation device, which includes:
  • a housing having a first cavity for accommodating an optical device, and a first opening and a second opening communicating with the first cavity are opened on the housing;
  • a heat dissipation cover is arranged on the housing and encloses a second cavity together with the housing.
  • the second cavity passes through the first opening and the second opening and is connected to the The first cavity is connected;
  • a color wheel the color wheel includes a color wheel body, the color wheel body is arranged across the first cavity and the second cavity through the first opening, and the color wheel body is accommodated in the center
  • the first part in the first cavity and the second part contained in the second cavity are arranged asymmetrically.
  • the shape of the first opening is trapezoidal or irregular.
  • the color wheel further includes a rotating shaft that drives the color wheel body to rotate, and the rotating shaft is located in the first cavity such that the first part of the color wheel body is larger than the second part.
  • the heat dissipation cover includes at least two heat dissipation covers, each of the heat dissipation covers is disposed on the casing and forms a second cavity with the casing, and the casing and each of the heat dissipation The opposite side of the cover is provided with the first opening and the second opening spaced apart from each other, and the color wheel body straddles the first cavity and each of the second cavities .
  • the two heat dissipation covers are provided on opposite sides of the housing.
  • the two heat dissipation covers are provided on adjacent two sides of the housing.
  • the heat dissipation cover includes a main body part covering the casing and collectively enclosing the first cavity, a heat dissipating column protruding and extending from the inner side of the main body in a direction approaching the casing, and The heat dissipation fins protrude from the outside of the main body in a direction away from the housing, and the heat dissipation column is located in the second cavity.
  • the color wheel further includes a plurality of mutually spaced blades formed by extending the peripheral edge of the color wheel body along its radial direction.
  • the color wheel heat dissipation device further includes a fan fixedly housed in the second cavity.
  • the utility model also provides a projection equipment, which includes the color wheel heat dissipation device of the utility model.
  • the first cavity enclosed by the housing serves as an optical cavity
  • the second cavity enclosed by the heat dissipation cover and the housing serves as a heat dissipation cavity.
  • the color wheel includes A rotating shaft in the first cavity and a color wheel body sleeved and fixed on the rotating shaft.
  • the color wheel includes a color wheel body.
  • the color wheel body spans the first cavity and the second cavity through the first opening, and the color wheel body
  • the first part accommodated in the first cavity and the second part accommodated in the second cavity are arranged asymmetrically; in the above structure, the heat dissipation cover radiates the internal heat to the outside, and when the color wheel body rotates, the color
  • the airflow inside the wheel heat sink generates internal circulation to enhance the flow, increase the heat transfer coefficient between the airflow and the heat sink, and strengthen heat exchange, so that the heat dissipation effect of the color wheel heat sink is good; in addition, the structure directly passes through the color wheel body
  • the movement of the driven airflow is disturbed and a flow pressure difference is generated between the first cavity and the second cavity.
  • the airflow is generated under the action of the pressure difference to realize the internal circulation of the internal airflow without additional driving, which effectively simplifies The structure of the color wheel heat sink.
  • FIG. 1 is a schematic diagram of the three-dimensional structure of the first embodiment of the color wheel heat dissipation device of the present invention
  • FIG. 2 is an exploded schematic view of the three-dimensional structure of the first embodiment of the color wheel heat dissipation device of the present invention
  • FIG. 3 is a schematic diagram of the three-dimensional structure of the housing of the first embodiment of the color wheel heat dissipation device of the present invention.
  • FIG. 4 is a schematic cross-sectional view of the first embodiment of the color wheel heat dissipation device of the present invention.
  • Fig. 5 is a cross-sectional view from another angle of the embodiment of the color wheel heat dissipation device of the present invention.
  • FIG. 6 is a schematic diagram of the three-dimensional structure of the second embodiment of the color wheel heat dissipation device of the present invention.
  • Fig. 7 is a schematic cross-sectional view of one of the schemes of the second embodiment of the color wheel heat dissipation device of the present invention.
  • FIG. 8 is a schematic cross-sectional view of another solution of the second embodiment of the color wheel heat dissipation device of the present invention.
  • FIG. 9 is a three-dimensional structural diagram of the third embodiment of the color wheel heat dissipation device of the present invention.
  • the present invention provides a color wheel heat dissipation device 100, which includes a housing 1, a heat dissipation cover 2 and a color wheel 3.
  • the housing 1 has a first cavity 10 for accommodating optical devices, and the housing 1 is provided with a first opening 101 and a second opening 102 communicating with the first cavity 10, the first opening 101 As the air flow outlet of the first cavity 10, the second opening 102 serves as the air flow inlet of the first cavity 10.
  • the shape of the first opening is not limited, and it can be set according to actual conditions.
  • the shape of the first opening 101 is irregular.
  • the first opening 101' on the housing 1' is trapezoidal.
  • the heat dissipation cover 2 is disposed on the housing 1 and encloses the second cavity 20 together with the housing 1.
  • the second cavity 20 is in air communication with the first cavity 10 through the first opening 101 and the second opening 102;
  • the air in the second cavity 20 is in contact with the heat dissipation cover 2, and therefore, the heat dissipation cover 2 is used to absorb the heat of the second cavity 20 to dissipate the heat in the second cavity 20 to the outside.
  • the specific number of second cavities is determined by the number of heat dissipation covers.
  • the number of heat dissipation covers and second cavities is not limited, and can be specifically set according to actual conditions.
  • the heat dissipation cover 2 is one, and the heat dissipation cover 2 is fixed to the housing 1 and encloses a second cavity 20 together with the housing 1.
  • the wheel radiator cover 100 has a double cavity structure.
  • the heat dissipation cover 2 includes a main body 21 covering the casing 1 and jointly enclosing the second cavity 20. Extend the heat dissipation pillars (not shown) and the heat dissipation fins 22 protruding from the outside of the main body 21 in the direction away from the housing 1.
  • the heat dissipation pillars are located in the second cavity 20; heat dissipation is increased by the arrangement of the heat dissipation pillars
  • the air contact area between the cover 2 and the second cavity 20 effectively increases the heat transfer coefficient between the two, so that the heat dissipation cover 20 absorbs heat from the second cavity 20 more efficiently.
  • the arrangement of 22 increases the contact area between the heat dissipation cover 2 and the outside air, so that the heat dissipation efficiency of the heat dissipation cover 2 to the outside air is higher, thereby better improving the overall heat dissipation performance of the heat dissipation cover 2.
  • the color wheel 3 is rotatably connected to the housing 1, and the rotation axis of the color wheel 3 is located in the housing 1.
  • the color wheel 3 includes a color wheel body 31 and a rotating shaft 32 that drives the color wheel body 31 to rotate.
  • the color wheel body 31 has a circular shape, and it straddles the first hollow through the first opening 101.
  • the second cavity 20 serves as a heat dissipation cavity.
  • the color wheel body 31 has a larger portion located in the first cavity 10, and a smaller portion in the second cavity 20; more specifically, the color wheel body 31 is accommodated in the first cavity 10
  • the part 311 and the second part 312 received in the second cavity 20 are arranged asymmetrically, and the rotating shaft 32 is located in the first cavity 10, so that the first part 311 of the color wheel body 31 is larger than the second part 312.
  • the part of the color wheel body 31 located in the first cavity 10 is larger than the part of the color wheel 3 located in the second cavity 20.
  • This structure is arranged so that the air flow driven by the color wheel 3 during the rotation of the color wheel 3 The movement is disturbed and a flow pressure difference will be generated between the first cavity 10 and the second cavity 20. The airflow is generated under the action of the pressure difference. The airflow flows from the first cavity 10 into the second cavity through the first opening 101.
  • the heat dissipation column when the heat dissipation column is provided, when the airflow flows through the second cavity 20, the airflow fully contacts the heat dissipation column and realizes heat exchange between the two. Since the contact area between the heat dissipation column and the airflow is large, it is effective Therefore, the heat transfer coefficient between the heat dissipation cover 2 and the air flow is improved, so that the heat dissipation effect of the color wheel heat dissipation device 100 is further optimized.
  • the color wheel heat dissipation device 100 further includes a fan 4 fixedly housed in the second cavity 20.
  • the specific location of the fan 4 is not limited, and it can be set according to actual conditions.
  • the fan 4 is arranged directly opposite to the second opening 102, and the fan 4 is installed in the second opening 102.
  • the arrangement of the fan 4 can effectively enhance the circulating flow of the internal airflow and strengthen the convective heat exchange, thereby further optimizing The heat dissipation effect of the color wheel heat sink 100.
  • the utility model also provides a projection equipment (not shown), which includes the color wheel heat dissipation device of the utility model.
  • the color wheel heat dissipation device 100a of the second embodiment is basically the same as the color wheel heat dissipation device of the first embodiment. The same parts are not repeated here; the difference between the two lies in the cavity.
  • the color wheel heat dissipation device of the first embodiment has a double cavity structure
  • the color wheel heat dissipation device of the first embodiment includes an optical cavity and a heat dissipation cavity
  • the color wheel heat dissipation device 100a of the second embodiment has a multi-cavity structure
  • the color wheel heat dissipation device 100a includes an optical cavity and at least two heat dissipation cavities.
  • the multi-cavity structure of the color wheel heat dissipation device 100a will be described below with reference to FIG. 6:
  • the color wheel heat dissipation device 100a includes a housing 1a, at least two heat dissipation covers 2a, and a color wheel 3a.
  • the specific number of second cavities is determined by the number of heat dissipation covers.
  • the number of heat dissipation covers includes at least two.
  • Each heat dissipation cover is disposed on the housing and forms a second cavity with the housing, namely A first cavity and at least two second cavities jointly constitute a multi-cavity structure of the color wheel heat dissipation device; the side of the housing and each heat dissipation cover directly opposite is provided with a first opening communicating with the first cavity The hole and the second opening, the color wheel is arranged across the first cavity and each second cavity.
  • the heat dissipation covers 2a include a first heat dissipation cover 201a and a second heat dissipation cover 202a.
  • the first heat dissipation cover 201a and the second heat dissipation cover 202a are respectively covered in the housing 1a. On both sides.
  • the positional relationship between the first heat dissipation cover 201a and the second heat dissipation cover 202a is not limited, and can be specifically set according to actual conditions.
  • the first heat dissipation cover 201a and the second heat dissipation cover 202a are respectively covered on opposite sides of the housing 1a; of course, as another solution of the second embodiment, refer to FIG. 8 for details, the first heat dissipation cover 201a' and the second heat dissipation cover
  • the two heat dissipation covers 202a' are respectively covered on the adjacent two sides of the housing 1a'.
  • the heat dissipation cover includes four heat dissipation covers, the four heat dissipation covers are respectively arranged around the housing, and the four heat dissipation covers are respectively covered on the housing to form four second cavities.
  • the color wheel body 31 has a larger portion located in the first cavity 10, and a smaller portion in the second cavity 20; more specifically, the color wheel body 31 is accommodated in the first cavity 10
  • the part 311 and the second part 312 received in the second cavity 20 are arranged asymmetrically.
  • the housing 1a has a first cavity 10a as an optical cavity.
  • the first heat dissipation cover 201a and the second heat dissipation cover 202a respectively form two second cavities 20a with the housing 1a, and the two second cavities 20a are used as heat dissipation cavities.
  • the first cavity and the two second cavities 20a jointly constitute the three-cavity structure of the color wheel heat dissipation cover 100a; the side of the housing 1a and the first heat dissipation cover 201a is provided with a first cavity communicating with the first cavity.
  • the side of the housing 1a directly opposite to the second heat dissipation cover 202a is also provided with a first opening 101a and a second opening 102a communicating with the first cavity.
  • Each of the first openings 101a is used as an air flow outlet of the first cavity 10a, and the second openings 102a are used as an air flow inlet of the first cavity 10a.
  • the color wheel body 31a is rotatably connected to the housing 1a through a rotating shaft 32a located in the first cavity 30a, and the color wheel body 31a is arranged across the first cavity 10a and the two second cavities 20a through two first openings 101a, respectively Inside, the color wheel body 31a is arranged asymmetrically among the three cavities.
  • the color wheel body 31a has less part in the second cavity 20a and more in the first cavity 10a. By setting this position, the color wheel body During the rotation of 31a, due to the disturbance of the air flow, there will be a flow pressure difference between the three cavities, resulting in internal circulation.
  • the color wheel heat sink 100b of the third embodiment is basically the same as the color wheel heat sink of the second embodiment.
  • the same parts are not repeated here; the difference between the two lies in the specific color wheel.
  • the structure is different.
  • the color wheel heat dissipation device 100b of the third embodiment is equipped with blades on the color wheel 3b, and the color wheel structure of the color wheel heat dissipation device 100b is described:
  • the color wheel 3b also includes a plurality of mutually spaced blades 33b formed by the peripheral edge of the color wheel body 31b extending in its radial direction; during the rotation of the color wheel 3b, the blades 33b effectively drive the flow of the internal airflow, that is, through the blades 33b
  • the setting of is equivalent to making the color wheel 3b have a fan function, so that the overall driving effect of the color wheel 3b on the internal airflow is enhanced, thereby further increasing the heat transfer coefficient between the airflow and the heat dissipation cover 2b, and strengthening the heat exchange, so that The heat dissipation effect of the color wheel heat sink 100b is good.
  • the first cavity enclosed by the housing serves as an optical cavity
  • the second cavity enclosed by the heat dissipation cover and the housing serves as a heat dissipation cavity.
  • the color wheel includes A rotating shaft in the first cavity and a color wheel body sleeved and fixed on the rotating shaft.
  • the color wheel includes a color wheel body.
  • the color wheel body spans the first cavity and the second cavity through the first opening, and the color wheel body
  • the first part accommodated in the first cavity and the second part accommodated in the second cavity are arranged asymmetrically; in the above structure, the heat dissipation cover radiates the internal heat to the outside, and when the color wheel body rotates, the color
  • the airflow inside the wheel heat sink generates internal circulation to enhance the flow, increase the heat transfer coefficient between the airflow and the heat sink, and strengthen heat exchange, so that the heat dissipation effect of the color wheel heat sink is good; in addition, the structure directly passes through the color wheel body
  • the movement of the driven airflow is disturbed and a flow pressure difference is generated between the first cavity and the second cavity.
  • the airflow is generated under the action of the pressure difference to realize the internal circulation of the internal airflow without additional driving, which effectively simplifies The structure of the color wheel heat sink.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Projection Apparatus (AREA)

Abstract

一种色轮散热装置(100)，其包括壳体(1)、散热罩(2)以及色轮(3)；壳体(1)具有用于收容光学器件的第一空腔(10)，且在壳体(1)上开设有与第一空腔(10)连通的第一开孔(101)和第二开孔(102)；散热罩(2)盖设于壳体(1)并与壳体(1)共同围成第二空腔(20)，第二空腔(20)通过第一开孔(101)和第二开孔(102)与第一空腔(10)连通；色轮(3)包括色轮本体(31)，色轮本体(31)经第一开孔(101)跨设于第一空腔(10)和第二空腔(20)，且色轮本体(31)收容于第一空腔(10)内的第一部分(311)与收容于第二空腔(20)内的第二部分(312)呈非对称设置。一种应用色轮散热装置(100)的投影设备。与相关技术相比，色轮散热装置(100)及投影设备结构简单且散热效果佳。

Description

色轮散热装置及其投影设备 【技术领域】
本实用新型涉及色轮散热领域，尤其涉及一种色轮散热装置及其投影设备。
【背景技术】
随着投影机的使用范围越来越广，出光亮度也在不断地提升。色轮是投影机中的重要装置，激光器亮度不断增加，在荧光轮上激发荧光而产生的热量也在不断加大。由于色轮马达轴承受高温的能力有限，这部分热量如果不及时散去，会使马达轴超温，严重影响色轮的使用寿命，从而使投影机发生故障，因此，将色轮设置在色轮散热装置上有利于色轮的散热。
相关技术中，对于高亮度的投影机，色轮散热装置设置水冷系统，通过密封水冷的方式以实现对色轮的散热；而对于稍低亮度的投影机，色轮散热装置设置散热器，风扇设置在色轮散热装置内部用以增强内部空气流动，散热器吸收内部空气中的热量，并将该热量散发到外部以实现对色轮的散热。
然而，相关技术中，在设置水冷系统以进行散热时，水冷系统的设置对整机布局有一定的要求，使得色轮散热装置结构复杂；而在设置散热器和风扇以进行散热时，虽然结构简单，但散热效率不高。
因此，实有必要提供一种新的色轮散热装置及其投影设备解决上述技术问题。
【实用新型内容】
本实用新型的目的在于提供一种结构简单且散热效果佳的色轮散热装置及其投影设备。
为达到上述目的，本实用新型提供一种色轮散热装置，其包括：
壳体，所述壳体具有用于收容光学器件的第一空腔，且在所述壳体上 开设有与所述第一空腔连通的第一开孔和第二开孔；
散热罩，所述散热罩盖设于所述壳体并与所述壳体共同围成第二空腔，所述第二空腔通过所述第一开孔和所述第二开孔与所述第一空腔连通；及
色轮，所述色轮包括色轮本体，所述色轮本体经所述第一开孔跨设于所述第一空腔和所述第二空腔，且所述色轮本体收容于所述第一空腔内的第一部分与收容于所述第二空腔内的第二部分呈非对称设置。
优选的，所述第一开孔的形状呈梯形或不规则形状。
优选的，所述色轮还包括带动所述色轮本体转动的转轴，所述转轴位于所述第一腔体内，使得所述色轮本体的第一部分大于所述第二部分。
优选的，所述散热罩包括至少两个，每一所述散热罩盖设于所述壳体且与所述壳体形成一个所述第二空腔，且所述壳体与各所述散热罩正对的一侧均开设有相互间隔的所述第一开孔和所述第二开孔，所述色轮本体跨设于所述第一空腔和每一所述第二空腔内。
优选的，所述散热罩为两个，该两个所述散热罩盖设于所述壳体的相对两侧。
优选的，所述散热罩为两个，该两个所述散热罩盖设于所述壳体的相邻两侧。
优选的，所述散热罩包括盖设于所述壳体并共同围成所述第一空腔的主体部、由所述主体部内侧向靠近所述壳体的方向凸出延伸的散热柱以及由所述主体部外侧向远离所述壳体的方向凸出延伸的散热翅片，所述散热柱位于所述第二空腔内。
优选的，所述色轮还包括由所述色轮本体的周缘沿其径向延伸形成的多个相互间隔设置的叶片。
优选的，所述色轮散热装置还包括固定收容于所述第二空腔的风扇。
本实用新型还提供一种投影设备，其包括本实用新型所述的色轮散热装置。
与相关技术相比，本实用新型的色轮散热装置中，壳体围成的第一空腔作为光学腔，散热罩与壳体围成的第二空腔作为散热腔，色轮包括收容 于第一空腔内的转轴以及套设固定于转轴的色轮本体，色轮包括色轮本体，色轮本体经第一开孔跨设于第一空腔和第二空腔，且色轮本体收容于第一空腔内的第一部分与收容于第二空腔内的第二部分呈非对称设置；上述结构中，散热罩将内部的热量散发到外部，当色轮本体转动时，使色轮散热装置内部的气流产生内循环，增强流动，加大气流与散热罩之间的换热系数，强化换热，从而使得色轮散热装置的散热效果佳；另外，该结构直接通过色轮本体带动的气流运动受到扰动而在第一空腔和第二空腔之间会产生流动压力差，在压力差的作用下产生气流以使内部气流实现内循环，无需额外的驱动，有效地简化了色轮散热装置的结构。
【附图说明】
为了更清楚地说明本实用新型实施例中的技术方案，下面将对实施例描述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实用新型的一些实施例，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获得其它的附图，其中：
图1为本实用新型色轮散热装置的实施方式一的立体结构示意图；
图2为本实用新型色轮散热装置的实施方式一的立体结构分解示意图；
图3为本实用新型色轮散热装置的实施方式一的壳体的立体结构示意图；
图4为本实用新型色轮散热装置的实施方式一的截面示意图；
图5为本实用新型色轮散热装置的实施方式一另一角度的截面图；
图6为本实用新型色轮散热装置的实施方式二的立体结构示意图；
图7为本实用新型色轮散热装置的实施方式二其中一方案的截面示意图；
图8为本实用新型色轮散热装置的实施方式二另一方案的截面示意图；
图9为本实用新型色轮散热装置的实施方式三的立体结构示意图。
【具体实施方式】
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本实用新型保护的范围。
实施方式一
请同时参阅图1-5所示，本实用新型提供一种色轮散热装置100，其包括壳体1、散热罩2以及色轮3。
壳体1具有用于收容光学器件的第一空腔10，且壳体1上开设有与所述第一空腔10连通的第一开孔101和第二开孔102，第一开孔101作为第一空腔10的气流流出口，第二开孔102作为第一空腔10的气流流入口。
进一步的，第一开孔的形状是不限的，其可以根据实际情况进行设置，比如，在本实施方式中，如图3(a)所示，第一开孔101的形状呈不规则形状；当然，如图3(b)所示，壳体1’上的第一开孔101’呈梯形也是可行的。
散热罩2盖设于壳体1并与壳体1共同围成第二空腔20，第二空腔20通过第一开孔101和第二开孔102与第一空腔10空气连通；第二空腔20内的空气与散热罩2接触，因此，而散热罩2用以吸收第二空腔20的热量以将第二空腔20内的热量向外部散发。
值得一提的是，第二空腔的具体数量由散热罩的数量决定的，散热罩和第二空腔的数量是不限的，其可以根据实际情况进行具体设置，比如，在本实施方式一中，散热罩2为一个，该散热罩2盖设固定于壳体1并与壳体1共同围成一个第二空腔20，该第二空腔20和第一空腔10共同构成色轮散热罩100的双腔体结构。
更优的，为了增强散热罩2的散热性能，散热罩2包括盖设于壳体1并共同围成第二空腔20的主体部21、由主体部21内侧向靠近壳体1的方向凸出延伸的散热柱(图未示)以及由主体部21外侧向远离壳体1的方向凸出延伸的散热翅片22，散热柱位于第二空腔20内；通过散热柱的设置 增加了散热罩2与第二空腔20的空气的接触面积，有效地提高两者之间的换热系数，使得散热罩20对第二空腔20的热量的吸收效率更高，另外，通散热翅片22的设置，增大了散热罩2与外部空气的接触面积，使得散热罩2的向外部空气的散热效率更高，从而更好地提高散热罩2的整体散热性能。
色轮3转动连接于壳体1，且色轮3的转动轴位于壳体1内。
在本实施方式中，色轮3包括色轮本体31和带动所述色轮本体31转动的转轴32，色轮本体31的形状呈圆形，其经第一开孔101跨设于第一空腔10和第二空腔20，其中，第一空腔10作为光学腔，第一空腔10中还设置有光学器件，同时各器件间不能完全封闭，要留有气流通道，便于气流循环，第二空腔20作为散热腔。
具体的，色轮本体31位于第一空腔10内的部分较多，而位于第二空腔20内的部分较小；更具体的，色轮本体31收容于第一空腔10内的第一部分311与收容于第二空腔20内的第二部分312呈非对称设置，而转轴32位于第一腔体10内，使得色轮本体31的第一部分311大于第二部分312。
上述结构中，色轮本体31位于第一空腔10内的部分大于色轮3位于第二空腔20内的部分，该结构设置使得在色轮3转动的过程中，色轮3带动的气流运动受到扰动而在第一空腔10和第二空腔20之间会产生流动压力差，在压力差的作用下产生气流，气流通过第一开孔101从第一空腔10流入第二空腔20，经过散热罩2时，该气流将热量散发至散热罩2以通过散热罩2实现散热，然后再通过第二开孔102从第二空腔20流回第一空腔10以完成内循环，增强流动，加大气流与散热罩2之间的换热系数，强化换热，从而使得色轮散热装置100的散热效果佳；另外，该结构直接通过色轮3即可带动内部的气流内循环，无需额外的驱动，该方案成本降低，同时使用的空间也较小，对整机布局没有特别的需求，有效地简化了色轮散热装置的结构。当然，在设置散热柱的情况下，气流在流经第二空腔20时，气流与散热柱充分接触并实现两者之间的换热，由于散热柱与该气流的接触面积较大，有效地提高散热罩2与该气流之间的换热系数，从而更 进一步地优化色轮散热装置100的散热效果。
更优的，色轮散热装置100还包括固定收容于第二空腔20的风扇4，该风扇4具体设置的位置是不限，其可以根据实际情况进行设置，比如，在本实施方式中，风扇4与第二开孔102正对设置，并将风扇4装设于第二开孔102内，通过风扇4的设置，能够有效地增强内部气流的循环流动，加强对流换热，从而进一步优化色轮散热装置100的散热效果。
本实用新型还提供一种投影设备(未图示)，其包括本实用新型的色轮散热装置。
实施方式二
如图6-8所示，实施方式二的色轮散热装置100a与实施方式一的色轮散热装置基本相同，对于相同的部分，在此，不再一一赘述；两者的区别在于腔体的具体数量，实施方式一的色轮散热装置为双腔体结构，实施方式一的色轮散热装置包括一个光学腔和一个散热腔，而实施方式二的色轮散热装置100a为多腔体结构，色轮散热装置100a包括一个光学腔和至少两个散热腔，下面结合图6对色轮散热装置100a的多腔体结构展开说明：
色轮散热装置100a包括壳体1a、至少两个散热罩2a以及色轮3a。
需要说明的是，第二空腔的具体数量由散热罩的数量决定的，散热罩的数量包括至少两个，每一散热罩盖设于壳体且与壳体形成一个第二空腔，即一个第一空腔与至少两个第二空腔共同构成色轮散热装置的多腔体结构；壳体与每一散热罩正对的一侧均开设有与第一空腔连通的第一开孔和第二开孔，色轮跨设于第一空腔和每一第二空腔内。
在本实施方式二中，散热罩2a为两个，散热罩2a包括第一散热罩201a和第二散热罩202a，第一散热罩201a和第二散热罩202a分别盖设于壳体1a的其中两侧。
具体的，第一散热罩201a和第二散热罩202a的位置关系是不限的，其可以根据实际情况进行具体的设置，比如，作为本实施方式二其中一个方案，详细参阅图7所示，第一散热罩201a和第二散热罩202a分别盖设于壳体1a的相对两侧；当然，作为本实施方式二的另一方案，详细参阅图 8所示，第一散热罩201a’和第二散热罩202a’分别盖设于壳体1a’的相邻两侧也是可行的。更进一步的，散热罩包括四个，该四个散热罩分别环绕壳体设置，且四个散热罩分别盖设于壳体以形成四个第二空腔。同样的，色轮本体31位于第一空腔10内的部分较多，而位于第二空腔20内的部分较小；更具体的，色轮本体31收容于第一空腔10内的第一部分311与收容于第二空腔20内的第二部分312呈非对称设置。
壳体1a具有作为光学腔的第一空腔10a，第一散热罩201a和第二散热罩202a分别与壳体1a形成两个第二空腔20a，两个第二空腔20a作为散热腔，该第一空腔与两个第二空腔20a共同构成色轮散热罩100a的三腔体结构；壳体1a与第一散热罩201a正对的一侧开设有与第一空腔连通的第一开孔101a和第二开孔102a，壳体1a与第二散热罩202a正对的一侧亦开设有与第一空腔连通的第一开孔101a和第二开孔102a，其中，两个第一开孔101a均作为第一空腔10a的气流流出口，第二开孔102a均作为第一空腔10a的气流流入口。
色轮本体31a通过位于第一空腔30a的转轴32a转动连接于壳体1a，色轮本体31a分别通过两个第一开孔101a跨设于第一空腔10a和两个第二空腔20a内，色轮本体31a在三个腔体间是非对称设置的，色轮本体31a处于第二空腔20a的部分较少，在第一空腔10a较多，通过该位置设置，使得色轮本体31a在转动的过程中必因带动的气流运动受到扰动而在三个腔体间会产生流动压力差，产生内循环，同时通过两个第二空腔20a进行散热，有效地增强色轮散热装置100a的内外换热效率，从而使得色轮散热装置100a的散热效果更佳。
实施方式三
如图9所示，实施方式三的色轮散热装置100b与实施方式二的色轮散热装置基本相同，对于相同的部分，在此，不再一一赘述；两者的区别在于色轮的具体结构不同，实施方式三的色轮散热装置100b在色轮3b上加装了叶片，对色轮散热装置100b的色轮结构展开说明：
色轮3b还包括由色轮本体31b的周缘沿其径向延伸形成的多个相互间 隔设置的叶片33b；在色轮3b转动过程中，叶片33b有效地驱动内部气流的流动，即通过叶片33b的设置相当于使色轮3b具有一个风扇功能，使得增强色轮3b整体对内部气流的驱动作用，从而更进一步地加大气流与散热罩2b之间的换热系数，强化换热，从而使得色轮散热装置100b的散热效果佳。
与相关技术相比，本实用新型的色轮散热装置中，壳体围成的第一空腔作为光学腔，散热罩与壳体围成的第二空腔作为散热腔，色轮包括收容于第一空腔内的转轴以及套设固定于转轴的色轮本体，色轮包括色轮本体，色轮本体经第一开孔跨设于第一空腔和第二空腔，且色轮本体收容于第一空腔内的第一部分与收容于第二空腔内的第二部分呈非对称设置；上述结构中，散热罩将内部的热量散发到外部，当色轮本体转动时，使色轮散热装置内部的气流产生内循环，增强流动，加大气流与散热罩之间的换热系数，强化换热，从而使得色轮散热装置的散热效果佳；另外，该结构直接通过色轮本体带动的气流运动受到扰动而在第一空腔和第二空腔之间会产生流动压力差，在压力差的作用下产生气流以使内部气流实现内循环，无需额外的驱动，有效地简化了色轮散热装置的结构。
以上所述的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。

Claims (11)

  1. 一种色轮散热装置，其特征在于，其包括：
    壳体，所述壳体具有用于收容光学器件的第一空腔，且在所述壳体上开设有与所述第一空腔连通的第一开孔和第二开孔；
    散热罩，所述散热罩盖设于所述壳体并与所述壳体共同围成第二空腔，所述第二空腔通过所述第一开孔和所述第二开孔与所述第一空腔连通；及
    色轮，所述色轮包括色轮本体，所述色轮本体经所述第一开孔跨设于所述第一空腔和所述第二空腔，且所述色轮本体收容于所述第一空腔内的第一部分与收容于所述第二空腔内的第二部分呈非对称设置。
  2. 根据权利要求1所述的色轮散热装置，其特征在于，所述第一开孔的形状呈梯形或不规则形状。
  3. 根据权利要求1所述的色轮散热装置，其特征在于，所述色轮还包括带动所述色轮本体转动的转轴，所述转轴位于所述第一腔体内，使得所述色轮本体的第一部分大于所述第二部分。
  4. 根据权利要求1所述的色轮散热装置，其特征在于，所述散热罩包括至少两个，每一所述散热罩盖设于所述壳体且与所述壳体形成一个所述第二空腔，且所述壳体与各所述散热罩正对的一侧均开设有相互间隔的所述第一开孔和所述第二开孔，所述色轮本体跨设于所述第一空腔和每一所述第二空腔内。
  5. 根据权利要求4所述的色轮散热装置，其特征在于，所述散热罩为两个，该两个所述散热罩盖设于所述壳体的相对两侧。
  6. 根据权利要求4所述的色轮散热装置，其特征在于，所述散热罩为两个，该两个所述散热罩盖设于所述壳体的相邻两侧。
  7. 根据权利要求1所述的色轮散热装置，其特征在于，所述散热罩包括盖设于所述壳体并共同围成所述第一空腔的主体部、由所述主体部内侧向靠近所述壳体的方向凸出延伸的散热柱以及由所述主体部外侧向远离所述壳体的方向凸出延伸的散热翅片，所述散热柱位于所述第二空腔内。
  8. 根据权利要求1所述的色轮散热装置，其特征在于，所述色轮还包括由所述色轮本体的周缘沿其径向延伸形成的多个相互间隔设置的叶片。
  9. 根据权利要求1所述的色轮散热装置，其特征在于，所述色轮散热装置还包括固定收容于所述第二空腔的风扇。
  10. 根据权利要求9所述的色轮散热装置，其特征在于，所述风扇与所述第二开孔正对设置。
  11. 一种投影设备，其特征在于，所述投影设备包括如权利要求1-10任意一项所述的色轮散热装置。
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