200916938 九、發明說明： • 【發明所屬之技術領域】 . 本發明涉及一種濾光元件，特別涉及一種用於投影系 統的色輪。 【先前技術】 投影系統係一種常見的光電顯示裝置，被廣泛應用於 生活娛樂、學術講演、商務展示等場合。投影系統依其原 理可分為陰極射線管（Cathode-Ray Tube，CRT)投影系統、液 晶顯示（Liquid Crystal Display，LCD)投影系統、數位光源處 理技術(Digital Light Processing，DLP)投影系統及單晶石夕液 晶（Liquid Crystal on Silicon，LC0S)投影系統等類別。其 中’ DLP投影系統因具有亮度高、色彩逼真、回應速率高、 無雜訊以及輕薄短小等優點，已成為目前新一代熱門投影 技術之一。 DLP投影糸統採用數位微鏡晶片（Digital Micro-mirrc)!· Device，DMD)對光源進行調製，再經投影光學系統成像於 ' 螢幕。其中，投影系統通常採用色輪(Color Wheel)對光源 進行色彩分離’為调製光添加色彩成分，實現彩色顯示。 在一般的投影系統中，光源、馬達等各個元件工作時 都會產生熱量’為了保證投影系統正常運作，通常要對投 影系統中各個元件進行散熱。然而，在投影系統中，色輪 前面一個元件為光源，投影系統在運轉時，色輪自身的熱 量加上光源的熱量使色輪溫度快速上升。另外，色輪一般 包括一個馬達及一個濾光片，濾光片通常係藉由粘著膠接 200916938 著於所述馬達上。一般粘著膠耐熱溫度約為l5(rc至 180°C，而光源發熱所產生的溫度則約為150°c至200。(：， * 故粘著膠容易發生脆化現象而導致濾光片的接著品質惡 化，在色輪高速旋轉以及高溫運轉的情況下，甚至會出現 濾光片鬆動或脫落的現象。由此可見，色輪散熱係目前亟 待解決的問題。 【發明内容】 有鑒於此，有必要提供一種散熱性能良好的色輪。 一種色輪，其包括一個具有一個轉軸、一個軸心蓋及 一個馬達本體的馬達、一個穿設於所述轉軸的濾光片及一 個具有散熱片的散熱器，所述軸心蓋設置於所述馬達本體 與所述濾光片之間，所述轉轴從軸心蓋上靠近濾光片的一 側伸出，所述軸心蓋及所述濾光片沿著轉軸旋轉，所述散 熱器极設於所述馬達。 與先刚技術相比’所述色輪藉由所述具有散敎片的散 熱器增大色輪散熱面積進行散熱，以達到良好的散敎性能。 【實施方式】 ~ 下面將結合附圖，對本發明作進一步的詳細說明。 第一實施例 請同時參閱圖i及圖2，為本發明第—實施例的色輪 100’其包括-個馬達10、—個濾光片12及— 所述濾光片12接著於所述馬$ ^運10，所述散熱器16環設於 馬達10。 所述濾光片 12包括三個扇形區122及—個由所述扇形 200916938 區122圍繞形成的中心孔124。各扇形區122分別鍍有用 • 於濾取紅光、綠光及藍光的滤光膜。當然，渡光片12的設 . 置並不局限於本實施例，濾光片12可以為一個由紅、綠、 藍三色的複數區塊所形成的圓形濾光片，或是由紅、綠、 藍三色加白色透明區塊的複數區塊所形成的圓形濾光片。 所述馬達10包括一個轉轴102、一個軸心蓋104、〆 個馬達本體106及一個固定部14。所述軸心蓋1〇4與濾光 片12接耆’且轴心盍104設置於所述馬達本體1 與丨慮光 片.12之間。所述轉轴102從轴心蓋1〇4上靠近濾、光片12 的一側伸出並穿過所述濾光片12的中心孔124。所述馬達 本體106由磁鐵、矽鋼片、電線繞圈等電磁組件構成’所 述馬達本體106位於所述軸心蓋1〇4及所述固定部14之 間。所述固定部14上具有兩翼142、144，所述兩翼142、 144上分別開設有通孔146、148，螺釘（圖未示）穿過通孔 146、148將馬達1〇固定於外部安裝部（圖未示）上，即玎固 定色輪100。 " 馬達10啟動時，所述電磁組件驅動轉轴102轉動。轉 軸102轉動帶動軸心蓋104轉動的同時，濾光片12也隨之 轉動。 本實施例中’所述散熱器16包括一個本體162及複數 散熱片164。所述本體162為中空環狀結構，其與所述轴 心蓋104相配合。所述散熱片164環設於所述本體I62並 相對本體162的軸心向外延展。所述散熱片164的形狀可 以為任意，如長方形、三角形等規則形狀或者螺旋狀等不 200916938 規則形狀。所述散熱片164的設置方式也可以為任意，比 • 如散熱片164與所述濾光片12垂直或者平行均可。所述散 . 熱片164的數量可以為一片或者多片。優選地，本實施例 中採用複數長方形的散熱片164，且其與濾光片12垂直。 散熱器16可藉由膠合、欲合、卡合或者螺紋螺合的方式設 置於所述軸心蓋104上，優選地，本實施例採用膠合的方 式。散熱器16的材質為鋁、銅等導熱性能良好的導熱金 屬，本實施例為銘材。 當然，所述散熱器並不局限於本實施中由本體162及 複數散熱片164構成的結構，也可以僅包括複數散熱片， 所述複數散熱片直接環設於馬達各部件上並與馬達各部件 為一體成形結構。 當色輪100處於工作階段時，色輪100不僅能藉由散 熱器16的散熱片162增大散熱面積而將熱量發散到空氣 中，而且軸心蓋104在繞著轉軸102轉動的同時，散熱器 16也隨之轉動，此時散熱片162轉動會產生空氣流動，並 '混合外部較冷空氣將色輪100的熱量發散，如此進一步提 高色輪100的散熱性能。 當色輪100處於剛剛停止工作需要散掉剩餘熱量的階 段時，色輪100仍能藉由散熱器16的散熱片162增大散熱 面積而將熱量發散到空氣中。 第二實施例 請參閱圖3，為本發明第二實施例的色輪2⑻的示意 圖。本實施例與第一實施例的區別在於：本實施例色輪200 9 200916938 中的散熱器26係環設於馬達本體i〇6。其中，軸心蓋l〇4 在繞著轉軸102轉動的同時，散熱器26不會隨之轉動，此 時色輪2〇〇的熱量係藉由散熱器％的散熱片增大散熱面積 而散掉。 弟二實施例 明芩閱圖4，為本發明第三實施例的色輪3〇〇的不意 圖。本實施例與第一實施例的區別在於：本實施例色輪300 中的散熱器36係環設於軸心蓋1〇4及濾光片12之間的轉 = 102。轉軸1〇2上進—步套設有一個間隔片％，所述間 隔片38设置於濾光片12與散熱器36之間，所述濾光片 12接著於所述間隔片38上。此處設置間隔片38的目的係 讓遽光片32能不與散熱器36接觸而接著牢靠，當然’也 可以不設置間隔片38，而直接在轉軸102上開設外螺紋， 同時在濾光片12的中心孔124内開設内螺紋，濾光片12 藉由内外螺紋旋合也能固定牢靠。 k 第四實施例 請參閱圖5，為本發明第四實施例的色輪400的示意 圖。本實施例與第一實施例的區別在於：本實施例色輪400 中的散熱器46係環設於轉軸1〇2，濾光片12接著於軸心 蓋，濾光片12穿設於軸心蓋1〇4與所述散熱器46之 間的轉軸；[〇2上。 當然，所述色輪並不局限於只使用一個散熱器對色輪 進行散熱’還可使用複數散熱器，比如兩個或者三個，散 熱器的位置採用第一實施例至第四實施例的結合。 200916938 綜上所述，本發明確已符合發明專利要件，爰依法提 • 出專利申請。惟，以上所述者僅為本發明之較佳實施方式， . 舉凡熟悉本案技藝之人士，於援依本案發明精神所作之等 效修飾或變化，皆應包含於以下之申請專利範圍内。 【圖式簡單說明】 圖1為本發明第一實施例的色輪的立體分解圖； 圖2為本發明第一實施例的色輪的結構示意圖； 圖3為本發明第二實施例的色輪的結構示意圖； 圖4為本發明第三實施例的色輪的結構示意圖； 圖5為本發明第四實施例的色輪的結構示意圖。 【主要元件符號說明】 色輪 100、200、300、 400馬達 10 濾光片 12 散熱器 16 ' 26 ' 36、46 扇形區 122 中心孔 124 轉轴 102 轴心蓋 104 馬達本體 106 固定部 14 兩翼 142、144 通孔 146 、 148 本體 162 散熱片 164 間隔片 38 11200916938 IX. DESCRIPTION OF THE INVENTION: • Technical field to which the invention pertains. The present invention relates to a filter element, and more particularly to a color wheel for a projection system. [Prior Art] The projection system is a common photoelectric display device and is widely used in life entertainment, academic lectures, business presentations and the like. According to its principle, the projection system can be divided into cathode ray tube (CRT) projection system, liquid crystal display (LCD) projection system, digital light processing (DLP) projection system and single crystal. Category of Liquid Crystal on Silicon (LC0S) projection systems. Among them, the DLP projection system has become one of the new generation of popular projection technologies due to its high brightness, vivid color, high response rate, no noise, and light and thin. The DLP projection system uses a digital micromirror (Digital Micro-mirrc)! Device, DMD) to modulate the light source and then image it on the 'screen. Among them, the projection system usually uses a Color Wheel to color-separate the light source, and adds a color component to the modulated light to realize color display. In a typical projection system, each component such as a light source and a motor generates heat when it operates. In order to ensure the normal operation of the projection system, it is common to dissipate heat from various components in the projection system. However, in the projection system, one component in front of the color wheel is a light source. When the projection system is in operation, the heat of the color wheel itself plus the heat of the light source causes the temperature of the color wheel to rise rapidly. In addition, the color wheel typically includes a motor and a filter, and the filter is typically attached to the motor by adhesive bonding 200916938. Generally, the adhesive heat resistance temperature is about l5 (rc to 180 ° C, and the temperature generated by the light source is about 150 ° C to 200. (:, * Therefore, the adhesive is prone to embrittlement and the filter is caused. Then, the quality deteriorates. In the case of high-speed rotation of the color wheel and high-temperature operation, even the phenomenon that the filter is loose or peeled off may occur. It can be seen that the heat dissipation of the color wheel is currently an urgent problem to be solved. It is necessary to provide a color wheel with good heat dissipation performance. A color wheel comprising a motor having a rotating shaft, a shaft cover and a motor body, a filter passing through the rotating shaft and a heat sink a heat sink, the shaft cover is disposed between the motor body and the filter, and the rotating shaft protrudes from a side of the shaft cover close to the filter, the shaft cover and the The filter rotates along a rotating shaft, and the heat sink is disposed at the motor. Compared with the prior art, the color wheel is cooled by the heat sink with the heat sink to increase the heat dissipation area of the color wheel. To achieve good divergence [Embodiment] The present invention will be further described in detail below with reference to the accompanying drawings. First Embodiment Referring also to Figures i and 2, a color wheel 100' according to a first embodiment of the present invention includes a motor. 10, a filter 12 and - the filter 12 is next to the horse, the heat sink 16 is looped to the motor 10. The filter 12 includes three sectors 122 and a central aperture 124 formed by the fan-shaped 200916938 region 122. Each sector 122 is plated with a filter film for filtering red, green and blue light. Of course, the arrangement of the light-passing sheet 12 is Not limited to this embodiment, the filter 12 may be a circular filter formed by a plurality of blocks of red, green, and blue colors, or a white transparent block of red, green, and blue colors. The circular filter formed by the plurality of blocks. The motor 10 includes a rotating shaft 102, a shaft cover 104, a motor body 106 and a fixing portion 14. The shaft cover 1〇4 and the filter The light sheet 12 is connected to the '' and the shaft core 104 is disposed between the motor body 1 and the diaphragm 12. The shaft 1 02 protrudes from a side of the shaft cover 1〇4 adjacent to the filter and the light sheet 12 and passes through the center hole 124 of the filter 12. The motor body 106 is electromagnetically magnetized, a silicon steel sheet, a wire coil, and the like. The motor body 106 is located between the shaft cover 1〇4 and the fixing portion 14. The fixing portion 14 has two wings 142 and 144, and the two wings 142 and 144 are respectively provided with through holes. 146, 148, screws (not shown) pass through the through holes 146, 148 to fix the motor 1 于 on the external mounting portion (not shown), that is, the fixed color wheel 100. " When the motor 10 is started, the electromagnetic The assembly drives the rotating shaft 102 to rotate. When the rotating shaft 102 rotates to rotate the shaft cover 104, the filter 12 also rotates. In the present embodiment, the heat sink 16 includes a body 162 and a plurality of fins 164. The body 162 is a hollow annular structure that mates with the shaft cover 104. The heat sink 164 is annularly disposed on the body I62 and extends outward from the axis of the body 162. The shape of the fins 164 may be arbitrary, such as a regular shape such as a rectangle or a triangle, or a spiral shape, etc., which is not a regular shape of 200916938. The heat sink 164 may be disposed in any manner, such as the heat sink 164 may be perpendicular or parallel to the filter 12. The number of the heat sheets 164 may be one or more sheets. Preferably, a plurality of rectangular fins 164 are used in this embodiment, and they are perpendicular to the filter 12. The heat sink 16 can be placed on the hub cover 104 by gluing, splicing, snapping or screwing. Preferably, the embodiment uses a glued method. The material of the heat sink 16 is a heat conductive metal having good thermal conductivity such as aluminum or copper, and this embodiment is a name material. Of course, the heat sink is not limited to the structure of the main body 162 and the plurality of heat sinks 164 in the present embodiment, and may include only a plurality of heat sinks, and the plurality of heat sinks are directly disposed on the motor components and each of the motors. The component is an integrally formed structure. When the color wheel 100 is in the working phase, the color wheel 100 can not only dissipate heat into the air by increasing the heat dissipation area of the heat sink 162 of the heat sink 16, but also the heat dissipation of the shaft cover 104 while rotating around the rotating shaft 102. The device 16 also rotates. At this time, the rotation of the fin 162 generates air flow, and 'mixes the external cold air to dissipate the heat of the color wheel 100, thus further improving the heat dissipation performance of the color wheel 100. When the color wheel 100 is in a stage where it is necessary to dissipate the remaining heat just after the stop operation, the color wheel 100 can still dissipate heat into the air by the heat sink 162 of the heat sink 16 increasing the heat dissipation area. Second Embodiment Referring to Figure 3, there is shown a schematic view of a color wheel 2 (8) according to a second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the heat sink 26 in the color wheel 200 9 200916938 of the present embodiment is disposed on the motor body i〇6. Wherein, the axial cover l〇4 rotates around the rotating shaft 102, and the heat sink 26 does not rotate with it. At this time, the heat of the color wheel 2〇〇 is dissipated by the heat sink of the heat sink. Drop it. Second Embodiment FIG. 4 is a schematic view of a color wheel 3 of a third embodiment of the present invention. The difference between this embodiment and the first embodiment is that the heat sink 36 in the color wheel 300 of the present embodiment is looped between the shaft cover 1〇4 and the filter 12=102. The rotating shaft 1〇2 is advanced. The step sleeve is provided with a spacer piece 100. The spacer sheet 38 is disposed between the filter 12 and the heat sink 36, and the filter sheet 12 is followed by the spacer sheet 38. The purpose of providing the spacers 38 here is to allow the calender sheet 32 to be in contact with the heat sink 36 and then to be secure. Of course, the spacers 38 may be omitted, and the external threads may be directly provided on the rotating shaft 102 while being in the filter. The central hole 124 of the 12 is internally threaded, and the filter 12 can be fixed by screwing the inner and outer threads. k Fourth Embodiment Referring to Figure 5, there is shown a schematic view of a color wheel 400 in accordance with a fourth embodiment of the present invention. The difference between this embodiment and the first embodiment is that the heat sink 46 in the color wheel 400 of the embodiment is disposed on the rotating shaft 1〇2, the filter 12 is followed by the shaft cover, and the filter 12 is disposed on the shaft. The shaft between the core cover 1〇4 and the heat sink 46; [〇2. Of course, the color wheel is not limited to using only one heat sink to dissipate the color wheel. A plurality of heat sinks, such as two or three, may be used, and the positions of the heat sinks are the first to fourth embodiments. Combine. 200916938 In summary, the present invention has indeed met the requirements of the invention patent, and the patent application is filed according to law. The above-mentioned embodiments are only the preferred embodiments of the present invention. Any modifications or variations made by those skilled in the art will be included in the following claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a color wheel according to a first embodiment of the present invention; FIG. 2 is a schematic structural view of a color wheel according to a first embodiment of the present invention; FIG. 4 is a schematic structural view of a color wheel according to a third embodiment of the present invention; and FIG. 5 is a schematic structural view of a color wheel according to a fourth embodiment of the present invention. [Main component symbol description] Color wheel 100, 200, 300, 400 motor 10 Filter 12 Radiator 16 ' 26 ' 36, 46 Sector 122 Center hole 124 Rotary shaft 102 Shaft cover 104 Motor body 106 Fixing part 14 Two wings 142, 144 through hole 146, 148 body 162 heat sink 164 spacer 38 11