200923552 九、發明說明： 【發明所屬之技術領域】 尤其涉及一種應用於投 本發明涉及一種電子設備 影之投影裝置。 【先前技術】 技β機-般會设置進氣部，使風扇等散熱裝置從進 虱部引入外部冷空氣對投影機内產生熱量之元件進行散 熱。進氣部通常與投影機之外殼—體成型設置。當散敎 裝置開始工作時’散_置藉由進氣部引人外部冷空氣 對投影機進行散熱。 然而’當散熱裝置停止工作時’進氣部無法關閉， 這樣會導致散歸置未玉料灰塵會從進氣部進入投影 機内部’從而影響投影機投影品質。 【發明内容】 有鐾於此，有必要提供一種具有自動開啟/關閉之進 氣部之投影裝置。 種投影裝置，其包括—殼體，一進氣部及至少一 散熱裝置。所述進氣部設置於所述殼體上。所述至少一 散熱裝置與所述進氣部相對應設置於所述殼體内。所述 進氣部包括-百葉窗，所述百葉窗包括—驅動裝置及一 葉片組。當所述散熱裝置開啟工作時，所述驅動裝置驅 動所述葉片組形成至少一通道使外部空氣進入投影裝置 以對投影裝置進行散熱。當所述散熱裝置停止工作時， 所述驅動裝置驅動所述葉片組密閉所述進氣部。 200923552 相較於先前技術，所述之投影裝置之進氣部之百葉 窗能於散熱裝置開啟工作時形成進氣通道，於散熱裝置 停止工作時密閉所述投影裝置殼體上之進氣部，保證散 熱裝置停止工作時灰塵不會從進氣部進入投影裝置之内 部，同時也提高了投影品質，操作簡便。 【實施方式】 下面將結合附圖對本發明實施方式作進一步之詳 細說明。 請一併參閱圖1至圖4，本發明之投影裝置100包 括一殼體10、一進氣部20、一散熱裝置40及一控制單 元60。所述散熱裝置40收容於所述殼體10内。進氣部 20對應散熱裝置40設置。所述控制單元60分別與所述 散熱裝置40及所述進氣部20電性連接。 殼體10為一收容光學元件之任意形狀之殼體。本 實施方式中，殼體10之形狀為長方體。殼體10包括一 底板12及四個侧板14。如圖3所示，殼體10之一側板 14設置一開口部144。開口部144形狀任意，本實施方 式中，開口部144為長方形。開口部144具有四個侧壁， 兩相對之侧壁146、148分別相對應開設有複數第一轴孔 1462及複數第二軸孔1222。本實施方式中，側壁146、 148分別開設五個第一轴孔1462及五個第二轴孔1222。 本實施方式中，側壁148由底板12之一部分構成，即第 二軸孔1222開設於底板12上。殼體10内收容之光學元 件包括光源、積分柱、成像裝置及投影鏡頭等（圖中均未 8 200923552 示）。 如圖2所示，進氣部20用於使外部冷空氣藉由散 熱裝置40引入投影裝置100内。進氣部20包括一百葉 窗22及開口部144。所述百葉窗22設置於開口部144。 百葉窗22包括一葉片組24及一驅動裝置26。所述 驅動裝置26與所述葉片組24相連接用以驅動所述葉片 組24移動，從而使葉片組24形成進風通道或者密閉進 氣部20。 葉片組24包括複數葉片242,本實施方式中設置五 個葉片242。各葉片242設置於殼體10之開口部144。 各葉片242形狀與開口部144形狀相對應即可。各葉片 242分別與開口部144之任兩相對之侧壁相連接。本實 施方式中，各葉片242分別與兩相對之侧壁146、148 可轉動之連接。每一葉片242包括一本體244及一沿其 本體244之一端面2440垂直於本體244向外延伸之凸緣 246。凸緣246之形狀為不影響葉片242工作之任意形 f 4 狀。本實施方式中，凸緣246類似為三角形。於本體244 之相對之兩端面分別沿垂直於本體244之兩端面方向相 背離延伸一第一轉軸2442與第二轉軸2444。所述第一 轉軸2442與進氣部20之開口部144之第一軸孔1462 相配合，所述第二轉軸2444與所述底板12之第二軸孔 1222相配合以使各葉片242分別與殼體10相連接。本 體244具有兩個相對之第一侧面2446、第二侧面2448 及分別與第一側面2446、第二侧面2448相鄰之第三侧 面2449。於所述第一侧面2446上沿端面2440延伸一第 9 200923552 _ 一凸台27(如圖3所示），於所述第二側面2448上沿所述 第三側面2449延伸一第二凸台28(如圖4所示）。所述第 一凸台27包括一第一結合面272。所述第二凸台28包 括一第二結合面282。各相鄰之葉片242藉由第一凸台 27之第一結合面272及第二凸台28之第二結合面282 相配合用以於散熱裝置40停止工作時能密閉進氣部 20。凸緣246遠離本體244之一端開設有一貫穿凸緣246 之第五軸孔2464。 驅動裝置26包括一馬達262、一轉接件264及一連 接板266。所述馬達262藉由轉接件264與所述連接板 266相連接。如圖3所示，馬達262具有一轉軸2622。 連接板266具有一第一表面2662及一相對之第一底面 2664。於所述第一表面2662上沿垂直於第一表面2662 之方向延伸一第三轉轴2666。於所述第一底面2664上 沿垂直於第一底面2664之方向延伸五個對應均勻間隔 設置之第四轉軸2668，各第四轉軸2668分別與各葉片 I 242之第五軸孔2464相對應。轉接件264開設有貫穿轉 接件264且間隔設置之一第三軸孔2642及一第四軸孔 2644。轉接件264之相對之兩表面分別與馬達262及連 接板266相對應且分別藉由第三轴孔2642與馬達262 之轉轴2622相配合，及藉由第四軸孔2644與連接板266 之第三轉軸2666相配合用以使馬達262驅動轉接件264 以帶動連接板266移動。 散熱裝置40為可將外部冷空氣引入殼體10内元 件。本實施方式中，散熱裝置40為風扇。散熱裝置40 10 200923552 對應殼體10之侧板14之進氣部20設置於投影裝置100 内之熱源附近，用以引入外部冷空氣對散熱裝置40附近 之熱源散熱。 控制單元60分別與散熱裝置40及驅動裝置26之 馬達262電性連接。控制單元60同時控制散熱裝置40 及馬達262之開啟及關閉。 當控制單元60控制散熱裝置40開啟工作時，此時 馬達262藉由轉軸2622驅動轉接件264順時針方向轉 動，轉接件264藉由連接板266之第三轉軸2666帶動連 接板266移動，從而連接板266藉由各第四轉軸2668 分別帶動各葉片242繞各自之第一轉轴2442與第二轉軸 2444轉動一定角度以使各相鄰葉片242之間形成進氣通 道。散熱裝置40藉由相鄰之葉片242之間形成之進氣通 道以引入外部冷空氣對熱源進行散熱。 當控制單元60控制散熱裝置40停止工作時，此時 馬達262藉由轉轴2622驅動轉接件264逆時針方向轉 動，轉接件264藉由連接板266之第三轉軸2666帶動連 接板266移動，從而連接板266藉由各第四轉轴2668 分別帶動各葉片242繞各自之第一轉軸2442與第二轉轴 2444轉動，以使各相鄰葉片242之第一凸台27之第一 結合面272及第二凸台28之第二結合面282相配合用以 密閉進氣部20。 相較於先前技術，所述之投影裝置之進氣部之百葉 窗能於散熱裝置開啟工作時形成進氣通道，於散熱裝置 停止工作時密閉所述投影裝置殼體上之進氣部，保證散 11 200923552 . 熱裝置停止工作時灰塵不會從進氣部進入投影裝置之内 部，同時也提高了投影品質，操作簡便。 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為本發明之投影裝置之整體示意圖。 /· 圖2為圖1之另一方向示意圖。 圖3為圖1之投影裝置之百葉窗關閉時之立體分解 示意圖。 圖4為圖3之另一方向立體分解示意圖。 【主要組件符號說明】 投影裝置 100 殼體 10 底板 12 第二轴孔 1222 側板 14 開口部 144 側壁 146、 148 第一轴孔 1462 進氣部 20 百葉窗 22 葉片組 24 葉片 242 本體 244 端面 2440 第一轉軸 2442 第二轉轴 2444 第一側面 2446 第二侧面 2448 第三側面 2449 凸緣 246 12 200923552 第五軸孔 2464 驅動裝置 26 馬達 262 轉軸 2622 轉接件 264 第三軸孔 2642 第四軸孔 2644 連接板 266 第一表面 2662 第一底面 2664 第三轉軸 2666 第四轉轴 2668 第一凸台 27 第一結合面 272 第二凸台 28 第二結合面 282 散熱裝置 40 控制單元 60 13200923552 IX. Description of the invention: [Technical field to which the invention pertains] In particular, the present invention relates to a projection apparatus relating to an electronic device. [Prior Art] The technology is generally provided with an air intake portion to allow a heat sink such as a fan to introduce external cold air from the intake portion to dissipate heat generating components in the projector. The air intake is usually formed integrally with the outer casing of the projector. When the dilation device starts to work, the projector dissipates heat from the projector by introducing external cold air. However, when the heat sink stops working, the air intake cannot be closed, which will cause the dust to be placed in the projector from the air intake to affect the projector's projection quality. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a projection apparatus having an intake portion that is automatically turned on/off. A projection device includes a housing, an air inlet, and at least one heat sink. The air inlet portion is disposed on the housing. The at least one heat sink is disposed in the housing corresponding to the air intake portion. The air intake portion includes a louver, and the louver includes a drive unit and a blade group. When the heat sink is turned on, the driving device drives the blade group to form at least one passage for external air to enter the projection device to dissipate heat from the projection device. The driving device drives the blade group to seal the intake portion when the heat sink stops working. 200923552 Compared with the prior art, the louver of the inlet portion of the projection device can form an intake passage when the heat sink is turned on, and seal the air inlet portion of the projection device housing when the heat sink stops working, thereby ensuring When the heat sink stops working, dust does not enter the inside of the projection device from the air inlet, and the projection quality is improved, and the operation is simple. [Embodiment] Hereinafter, embodiments of the present invention will be further described in detail with reference to the accompanying drawings. Referring to FIG. 1 to FIG. 4 together, the projection apparatus 100 of the present invention includes a housing 10, an air inlet portion 20, a heat sink 40, and a control unit 60. The heat sink 40 is received in the housing 10 . The intake portion 20 is provided corresponding to the heat sink 40. The control unit 60 is electrically connected to the heat sink 40 and the air inlet 20, respectively. The housing 10 is a housing of any shape that houses the optical component. In the present embodiment, the shape of the casing 10 is a rectangular parallelepiped. The housing 10 includes a bottom plate 12 and four side plates 14. As shown in Fig. 3, one side plate 14 of the casing 10 is provided with an opening portion 144. The shape of the opening 144 is arbitrary, and in the present embodiment, the opening 144 is rectangular. The opening portion 144 has four side walls, and the opposite side walls 146, 148 respectively have a plurality of first shaft holes 1462 and a plurality of second shaft holes 1222. In the embodiment, the side walls 146 and 148 respectively define five first shaft holes 1462 and five second shaft holes 1222. In the present embodiment, the side wall 148 is formed by one portion of the bottom plate 12, that is, the second shaft hole 1222 is opened on the bottom plate 12. The optical components housed in the housing 10 include a light source, an integrating column, an imaging device, and a projection lens (not shown in Fig. 3 200923552). As shown in Fig. 2, the intake portion 20 is for introducing external cold air into the projection device 100 by the heat sink 40. The intake portion 20 includes a louver 22 and an opening 144. The louver 22 is provided in the opening portion 144. The louver 22 includes a blade set 24 and a drive unit 26. The drive unit 26 is coupled to the blade set 24 for driving the blade set 24 to move such that the blade set 24 forms an air inlet passage or a closed intake portion 20. The blade set 24 includes a plurality of blades 242, and five blades 242 are provided in the present embodiment. Each of the vanes 242 is provided in the opening portion 144 of the casing 10. The shape of each of the blades 242 may correspond to the shape of the opening 144. Each of the vanes 242 is connected to a side wall opposite to either of the openings 144. In this embodiment, each of the vanes 242 is rotatably coupled to the opposite side walls 146, 148, respectively. Each blade 242 includes a body 244 and a flange 246 extending outwardly of the body 244 along an end surface 2440 of the body 244. The shape of the flange 246 is any shape that does not affect the operation of the blade 242. In this embodiment, the flange 246 is similarly triangular. The first rotating shaft 2442 and the second rotating shaft 2444 extend away from each other at opposite end faces of the body 244, respectively, in a direction perpendicular to the end faces of the body 244. The first rotating shaft 2442 cooperates with the first shaft hole 1462 of the opening portion 144 of the air inlet portion 20, and the second rotating shaft 2444 cooperates with the second shaft hole 1222 of the bottom plate 12 to make the respective blades 242 respectively The housings 10 are connected. The body 244 has two opposing first side faces 2446, a second side face 2448, and a third side face 2449 adjacent the first side face 2446 and the second side face 2448, respectively. A 9th 200923552 _ a boss 27 (shown in FIG. 3 ) extends along the end surface 2440 , and a second boss extends along the third side 2449 on the second side 2448 . 28 (as shown in Figure 4). The first boss 27 includes a first joint surface 272. The second boss 28 includes a second bonding surface 282. The adjacent vanes 242 cooperate with the first joint surface 272 of the first boss 27 and the second joint surface 282 of the second boss 28 to seal the intake portion 20 when the heat sink 40 is stopped. The flange 246 defines a fifth shaft hole 2464 extending through the flange 246 away from one end of the body 244. The drive unit 26 includes a motor 262, an adapter 264 and a connector plate 266. The motor 262 is coupled to the web 266 by an adapter 264. As shown in FIG. 3, the motor 262 has a shaft 2622. The connecting plate 266 has a first surface 2662 and an opposite first bottom surface 2664. A third rotating shaft 2666 extends in a direction perpendicular to the first surface 2662 on the first surface 2662. On the first bottom surface 2664, five correspondingly spaced fourth rotating shafts 2668 extend in a direction perpendicular to the first bottom surface 2664, and each of the fourth rotating shafts 2668 respectively corresponds to the fifth shaft hole 2464 of each of the blades I 242. The adapter 264 is provided with a through hole 264 and a third shaft hole 2642 and a fourth shaft hole 2644. The opposite surfaces of the adapter 264 respectively correspond to the motor 262 and the connecting plate 266 and are respectively engaged with the rotating shaft 2622 of the motor 262 by the third shaft hole 2642, and by the fourth shaft hole 2644 and the connecting plate 266. The third rotating shaft 2666 cooperates to cause the motor 262 to drive the adapter 264 to drive the connecting plate 266 to move. The heat sink 40 is an element that can introduce external cold air into the housing 10. In the present embodiment, the heat sink 40 is a fan. The heat sink 40 10 200923552 is disposed adjacent to the heat source in the projection device 100 for receiving the external cold air to dissipate heat from the heat source in the vicinity of the heat sink 40. The control unit 60 is electrically connected to the heat sink 40 and the motor 262 of the drive unit 26, respectively. The control unit 60 simultaneously controls the opening and closing of the heat sink 40 and the motor 262. When the control unit 60 controls the heat sink 40 to be turned on, the motor 262 drives the adapter 264 to rotate clockwise by the rotating shaft 2622, and the adapter 264 drives the connecting plate 266 to move by the third rotating shaft 2666 of the connecting plate 266. Therefore, the connecting plate 266 drives the blades 242 to rotate around the respective first rotating shaft 2442 and the second rotating shaft 2444 by the respective fourth rotating shafts 2668 to form an intake passage between the adjacent blades 242. The heat sink 40 dissipates heat from the heat source by introducing an external cold air between the adjacent vanes 242. When the control unit 60 controls the heat sink 40 to stop working, the motor 262 drives the adapter 264 to rotate counterclockwise by the rotating shaft 2622, and the adapter 264 drives the connecting plate 266 to move by the third rotating shaft 2666 of the connecting plate 266. The connecting plate 266 drives the blades 242 to rotate around the respective first rotating shaft 2442 and the second rotating shaft 2444 by the fourth rotating shafts 2668, so that the first joints of the first bosses 27 of the adjacent blades 242 are combined. The surface 272 and the second joint surface 282 of the second boss 28 cooperate to seal the intake portion 20. Compared with the prior art, the louver of the inlet portion of the projection device can form an intake passage when the heat sink is turned on, and close the air inlet portion of the housing of the projection device when the heat sink stops working, ensuring dispersion. 11 200923552 . Dust does not enter the inside of the projection unit from the air intake when the thermal device stops working, it also improves the projection quality and is easy to operate. In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art of the present invention should be included in the following claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic overall view of a projection apparatus of the present invention. / Figure 2 is a schematic view of the other direction of Figure 1. Fig. 3 is a perspective exploded view showing the louver of the projection apparatus of Fig. 1 when it is closed. 4 is a perspective exploded view of the other direction of FIG. 3. [Main component symbol description] Projection device 100 Housing 10 Base plate 12 Second shaft hole 1222 Side plate 14 Opening portion 144 Side wall 146, 148 First shaft hole 1462 Air inlet portion 20 Shutter 22 Blade group 24 Blade 242 Body 244 End surface 2440 First Rotary shaft 2442 Second reel 2444 First side 2446 Second side 2448 Third side 2449 Flange 246 12 200923552 Fifth shaft hole 2464 Drive unit 26 Motor 262 Rotary shaft 2622 Adapter 264 Third shaft hole 2642 Fourth shaft hole 2644 Connecting plate 266 first surface 2662 first bottom surface 2664 third rotating shaft 2666 fourth rotating shaft 2668 first boss 27 first joint surface 272 second boss 28 second joint surface 282 heat sink 40 control unit 60 13