201243478 五、發明說明： 【發明所屬之技術領域】 本發明係一種投影機，尤其是一種能以短投射距離向投射面上投 射出大顯示晝面之短焦距投影機。 【先前技術】 目刖市面上已有各種具備光源、光調變裝置、以及投射透鏡的投 影機，且隨^技術進步’投影機體積逐漸縮小、亮度漸漸提昇。而各 種投影機，藉由不同結構的光調魏置，根據外部傳來的影像資訊， 調變從該統射出之光束，轉成光學影像；並透過投射透鏡放大投 射至螢幕或牆面等投射面。 、，如圖1所不’目前投影機5在進行影像投射時，必須先選擇一個 適當的投影機5擺設位置，再調整投射透鏡的焦距，讓投影在投射面 上的畫面清晰。-方面，此種投影機5必須與投射面保持一段距離， 才能提供足夠的放大倍率，讓投射影像達到預定尺寸；但是，投影機5 本身不但佔據-m而且需散熱而排放減並發出風吹聲響，因 此其空間擺放常成為困擾。更進—步，由於空聰放有諸度:也不 易於隨身攜帶，因此目前市面上所販㈣投賴5多賴定式為主。 二此類固定式的投影機主要分為吊掛式投影機及桌上型投影機，由 及政熱問題，#掛式投影機通常將熱氣排放與散熱風吹雜 ^上^至天花板位置，從而減少對於_者的干擾，但因掛設於 =板’需要額外施工、且毫無移動使用的機會；相對地，桌上 因機器與_者距離無法拉開，繼者必須忍雜音錄 干擾作伴，整體使用因而不便。 ........ 改4上述11境’賴更有-種織距投影機出現，其主要原理， =Γ:中將光源206與光調變裝置208的出光方向，朝向相反 中，將侧=，並且猎由一個特殊的二次反射鏡204，在極短的距離 二影像轉向反射而呈現在投射面1 i;由於短焦距 又办機本U位置貼近投射面丨，可以將雜音與熱風從閱聽者身 201243478 旁拉開。 但足，一 彳面此觀職_鶴_距，健具有-個猶長的 身2〇2 ’以及十數公分的間隔需求，不能讓機殼背板真正平貼於 於是，當設置於一般客廳中，所佔據的空間會比一般液晶電 ΐ :於牆面的家電用品更礙眼；另方面，二次反射鏡是向上投 Ά射方向若不疋透^，就是設置有透光的玻璃且為提昇投射 4，-般是以透空為佳，也使得二次反射鏡上容易落灰，落灰太多 反射鱗，擦拭難又·及反射_平滑、甚至傷及反射鍵 膜表面，同樣降低反射效率，也讓反射影像劣化。 因此，目前的短焦距投影機在不使用時必須用桌巾等覆蓋，使用 時才取下，^必獅牆面有段間隔放置’無論在空間擺放、操作使用 的便=、影像品質的確保，各方面都仍有其難點有待改善。如何解決 上述習關題與缺失’即為本發明之發明人與從事此行業之相關廠商 所極欲研究改善之方向所在。 【發明内容】 ^本發月之目的在於提供一種能將投影機向上出光區完整遮蔽保 護的紐焦距投雜’藉以避免二次反射鏡受到不必要污染。 本發明之另-目的在提供—種具有紐殼體，級收納、裝載、 及攜帶的短焦距投影機。 β本發明之又一目的在提供一種收納時節約空間，且開啟時可順利 提供與投射面_足夠轉而便於投射使用騎焦距投影機。 本發明之再一目的在提供一種投影機向上出光區可以被完整遮蔽 保護，確保投影品質的家庭劇院。 本發明之又另-目的在提供—種易於收納及攜帶的家庭劇院。 因此’本發明為—種短焦距投影機，供設置於一個對應一個投射 面的基座，該投影機包^ —個統；—個投雜本體，包括一個形 脑光區的機殼；及—組設置於該機殼中、將該光源所發 光束加以调制、並由該出光區投出的光機；及—組供將該投影機本體 201243478 在-個使該出光隨遮蔽的收驗置、及—做該出光區暴露且距離 紐射面達-健射Η檻的操作位置_對絲座勒的運 而將上述短焦距投影機加裝一個螢幕作為投射面，即可構^ 劇院’包含：-個對應該投射面的基座；—個短焦距投影機，供設置 於該基座，該投影機包括-個光源；—個投影機本體，包括一個形 有-個向上出光區的鑛；及—組設胁職財、將触源所發光 束加以調制、並由該出光區投出的光機；及—組供將該投影機本體在 -個使該出光區被遮蔽的收納位置、及—個使該出光區暴露且距離該 投射面達-個投射卩m的操作位置間相對該基座動的運動裝置。/ +上述之短焦距投雜’藉φ運絲置結合郷機树所包含的機 殼、，光源及對光源產生之光束進行調制出的光機，運動裝置可讓 投影機本體桃減暴露操作之間往返運作，不僅在收靖，減少佔 用空間；也可以在暴露而供投料，提供充分的__，讓投影面 ^所呈現的畫面達到預期尺寸，尤其在收納時，向上出光區被完整遮 蔽保護，使得二次反職不會輕錢到不必要污染，藉贿持投射品 質加以’藉由與其他周邊設備的結合，讓可攜式短焦距投影機輕易 升級為家庭劇院，達成所有上述目的。 實施方式】 為達成上述目的及功效，本發明所採用之技術手段及構造，茲繪 圖就本發明雛實施例詳加綱越徵與功能如τ，翻完全瞭解。 圖3及圖4所示，為本發明第一較佳實施例的短焦距投影機3，其 被設置於一個對應例釋為牆壁之投射面丨的保護櫃體4，投影機3主^ 包含投影機本體30及運動裝置32，其中投影機本體3〇所包括的機殼 3〇2,形成有一向上出光區3〇2〇，而在機殼3〇2内裝設有足以產生光束 的光源，再運用光調變組件而調制該光束，並由二次反射鏡3似反射 經向上出光區3020，將所投出的調制後光束顯示於投射面1。 保護櫃體4在本例中包括一片頂壁4〇、及兩側壁42，運動裝置32 在本例中則例釋為設置在兩側壁42上的一組滑軌32〇，投影機本體3〇 藉由滑軌320的往返滑移，可以被藏在作為基座2的壁櫃内，也可以 201243478 鳍日，扣目斤丁被拉，並藉以與投射面1取得足夠的投射距離，為便於 二 ，在此定義投職本體3〇倾祕賴碰4㈣，稱為收 =置Μ ’至於被拉缺用時’稱為操作位置46;在此，亦將光調變 ，，且件及一次反射鏡3〇4共同定義為光機。 由於作為基座2的壁櫃疋罪牆擺設，因此當投景彡機本體被收納 於保護櫃體4中時，絲毫不會暴露在遠離牆_位置而礙事，尤其投 影機本體30的向上出光區3〇2〇會被頂壁4〇及兩侧壁42所遮蔽，大 幅減少灰塵或水轉落污染的鮮’進而達翁塵及關損之目的。 相對地’當投影機本體3〇藉由滑軌32〇被拉到操作位置46時，(亦 可，樞轴’旋轉的方式)以供將投影機本體3G由收納位置44滑移 至操作位置46 ’當投韻本體3G雜至操作位置#時，向上出光區 3020暴露於外’且距離投射面i達一個投射門禮，光源所產生之光束 會加以調制，並由出光區投出經勒上出光區3G2G打在投射面卜由 此得知二此設需較闕距離即可制驗範_投射面，且其距 離^固糾輯，因此無須再另外移_整，只要將賴櫃體4擺設 於罪近踏壁處即可完成。 田…、：熟悉本技術領域者可以輕易理解，前述將短焦距投影機設 置於壁櫃t ’僅是本案的—種實财式，麟作為紐之用^如圖5 圖6所示，若將目前常見的手提式音響加以改造，將本發明所述的短 焦距投影機設置於例如巾央部分，並則㈣作為本例巾之基座2,，且 以片可收摺的可攜式螢幕作為本例中的投射面i，，投影機本體灿 ，被设置於左右_彳的剩蚊間，僅需藉由左右佩義壁作為保 ==本體3〇,的倾麵4’。制前，先將上料提絲庭劇院組 體置放於例如牆邊等適當位置，當然，即使是放在野外草地上亦無 妨；隨即將作為投射Φ 1，的麟紐。 ‘… 、在本例中，if動裝置32’主要是一組枢軸322, ’讓投影機本體扣， 可以相對於’八樞轉’以供將投影機本體3〇，由圖6所示的收納位置 私’ ’旋轉至操作位置你，；至於投影機本體30,產生光束方式與前一實 1例相同’主要是將光騎發光練卿後，再反射經向上出光區3020, 技射在技射面1’上。更因為此一設備中，投射面】，與投影機本體3〇, 201243478 戰，僅需將投影機本體3G，旋轉妥當即可使用。 ^ 時，投影機本體30,本身的底壁41，與後側壁43，被轉 至”後方與上方’使得投影機本體30,位於收納位置44,處時會受到 本身機殼302’及兩側剩，八的側壁42,所遮蔽，0此向上出光區麵，及 機殼3〇2,内的二次反射鏡3〇4,都不易受到灰塵及外力損傷。 同舟:^悉本猶輕可W理解，前述投频巾的光源與光機 ° ”、彳必須’亦可考慮如® 7本案另-較佳實施例所示，將光 源306”與部分調制來自光源、3〇6，，之光束的光學元件設置於一侧定位 置’僅將例如包括二次反射鏡3G4”的部分定義為光機，並且可以隨著 機殼302”而相對光源移動，藉此定義光機的收納位置、及使出光區暴 露且距離投射面達-個投射門檻的操作位置。由此，當進人收納位^ 時’二次反射鏡304”與光源306”等元件，是被完整包覆保護；要使用 時’也僅需將二次反射鏡3〇4，，與機殼3〇2”部分拉出至操作位置 投射操作。 藉此，本案的投影機本體在操作使用時，可以輕易確保其與投射 面間的適當距離而易於操作；收納時可以被妥善保護，從而減少二次 反射鏡與向上出光區遭到不必要的污染或損壞，藉以確保投影品質； 且收納後所佔用體積小，有效節約收納所需空間，而易於收納、裝載、 及攜帶；丨其可以搭配例如.八或登幕等周邊，從而輕易組合成可攜 帶的手提式家庭劇院，達成本發明的所有目的。 同 惟以上所述者，僅為本發明之較佳實施例而已，不能以此限定本 發明^施之範圍，即大凡依本發明申請專利範圍及發明說明書内容所 作之簡單的等效變化與修飾，皆應仍屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1是習知投影機之使用狀態示意圖。 圖2是習知短焦距投影機結構及操作示意圖。 圖3是本案第一較佳實施例的短焦距投影機之收納狀態示意圖。 圖4是圖3實施例的短焦距投影機之操作狀態示意圖。 201243478 狀態=圖是具有本案第二較佳實施例短焦距投影機的家庭劇院之收納 圖6是圖5實施例的使用狀態示意圖。 圖7是本案第三較佳實施例的短焦距投影機之僅移動光機的收納 狀態示意圖。 【主要元件符號說明】 本創元件 投射面......1 > r 基座.....2、2’ 投影機......3 投影機本體……30、30’ 機殼......302、302’、302” 光源..... 306” 向上出光區......3020、3020， 二次反射鏡......304、304,、304 ” 運動裴置......32、32， 滑軌......320 樞軸......322， 保護櫃體……4、4’ 頂壁......40 側壁......42、42’ 收納位置......44、44， 操作位置......46、46’ 底壁.....41， 後側壁......43’ 習知元件 投影機......5 二次反射鏡......204 光調變裝置......208 機身......202 光源.....206 8201243478 V. OBJECTS OF THE INVENTION: 1. Field of the Invention The present invention relates to a projector, and more particularly to a short focal length projector capable of projecting a large display face to a projection surface with a short throw distance. [Prior Art] There are various projectors equipped with a light source, a light modulation device, and a projection lens on the market, and with the advancement of technology, the volume of the projector is gradually reduced and the brightness is gradually increased. And various projectors, by means of different configurations of light modulation, according to externally transmitted image information, modulate the beam emitted from the system and convert it into an optical image; and project the projection onto the screen or wall through the projection lens. surface. At present, when the projector 5 is performing image projection, it is necessary to select an appropriate position of the projector 5, and then adjust the focal length of the projection lens to make the image projected on the projection surface clear. On the other hand, such a projector 5 must be kept at a distance from the projection surface to provide sufficient magnification to allow the projected image to reach a predetermined size; however, the projector 5 itself not only occupies -m but also requires heat dissipation to discharge and emit a wind squeak. Therefore, its space placement often becomes a problem. More progress, because of the empty Cong puts the degree: it is not easy to carry with you, so the current market (4) voted more than 5 more. 2. These fixed projectors are mainly divided into hanging projectors and desktop projectors. The problem is that the #hanging projector usually blows hot air and heat to the ceiling position. Reduce the interference to the _ person, but because of the need to hang on the = board 'excessive construction, and no mobile use opportunities; relatively, the table can not be pulled apart due to the distance between the machine and the _, the successor must endure the miscellaneous recordings With the overall use, it is inconvenient. ........ Changed the above-mentioned 11 environment, the main reason, the main principle, = Γ: the light source 206 and the light modulation device 208 light direction, facing the opposite, Side =, and hunting by a special secondary mirror 204, at a very short distance two images are reflected and reflected on the projection surface 1 i; due to the short focal length and the U position of the machine close to the projection surface, the noise can be Pull away from the hot air from the listener's body 201243478. But the foot, the face of this view _ crane _ distance, health has a long body 2 〇 2 ' and the spacing of ten centimeters, can not let the back of the chassis really flat, so when set in general In the living room, the space occupied by the LCD TV will be more unsightly than the household appliances on the wall. On the other hand, if the secondary mirror is in the direction of the upward projection, if it is not transparent, it is provided with light-transmissive glass. In order to improve the projection 4, it is generally better to use the air, which also makes the secondary mirror easy to fall, the gray is too much to reflect the scale, the wipe is difficult and the reflection _ smooth, and even damage the surface of the key film, the same Reducing the reflection efficiency also degrades the reflected image. Therefore, the current short focal length projector must be covered with a tablecloth or the like when not in use, and it is taken off when it is used. The wall of the lion wall is placed at intervals. 'Whether it is placed in the space, the operation is used, the image quality is Ensure that all aspects still have their difficulties to be improved. How to solve the above problems and lacks is the direction that the inventors of the invention and related manufacturers engaged in this industry are eager to study and improve. SUMMARY OF THE INVENTION The purpose of this month is to provide a neon-gap dosing that can completely shield the projector from the light exit area to avoid unnecessary contamination of the secondary mirror. Another object of the present invention is to provide a short focal length projector having a housing, level storage, loading, and carrying. Another object of the present invention is to provide a space saving when accommodating, and to provide a smooth transition to the projection surface when the opening is sufficient to facilitate projection. Still another object of the present invention is to provide a home theater in which the projector's upward light exit area can be completely shielded to ensure projection quality. Still another object of the present invention is to provide a home theater that is easy to store and carry. Therefore, the present invention is a short focal length projector for a pedestal corresponding to a projection surface, the projector includes a system; a dosing body, including a casing having a brain-shaped region; a group of optical machines disposed in the casing, modulating the illuminating beam of the light source, and being emitted by the illuminating area; and - a group for the projector body 201243478 in the presence of the illuminating Set and/or the operation position of the light-emitting area exposed and the distance from the illuminating surface to the Η槛 Η槛 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 'Includes: - a pedestal corresponding to the projection surface; - a short focal length projector for the base, the projector includes - a light source; - a projector body, including a shaped - upward light exit area Mine; and - set up a slogan, illuminate the illuminating beam of the source, and emit light from the illuminating zone; and - set the projector body to be shielded in the illuminating zone The storage position, and the exposure of the light exit area and the distance from the projection surface - Moving means between an operating position projecting Jie m movable relative to the base. / + The above-mentioned short focal length dosing 'by φ transport wire combined with the casing contained in the tree, the light source and the light machine modulating the light beam generated by the light source, the motion device can make the projector body reduce exposure operation The operation between the two sides is not only in the collection, but also reduces the space occupied; it can also be used for feeding and feeding, providing sufficient __, so that the image presented by the projection surface can reach the expected size, especially when the storage area is completed. Shadow protection, so that the second reaction will not light money to unnecessary pollution, borrowing bribes to cast quality to 'by combining with other peripheral devices, let portable short focal length projectors easily upgrade to home theater, to achieve all of the above purpose. BEST MODE FOR CARRYING OUT THE INVENTION In order to achieve the above object and effect, the technical means and structure employed in the present invention are fully understood in view of the details of the embodiment of the present invention. 3 and FIG. 4 show a short focal length projector 3 according to a first preferred embodiment of the present invention, which is disposed in a protective cabinet 4 corresponding to a projection surface of a wall, and the projector 3 includes The projector body 30 and the moving device 32, wherein the casing 3〇2 included in the projector body 3b is formed with an upward light exiting area 3〇2〇, and a light source sufficient to generate a light beam is disposed in the casing 3〇2. Then, the light beam is modulated by the light modulation component, and reflected by the secondary mirror 3 through the upward light exiting region 3020, and the emitted modulated light beam is displayed on the projection surface 1. The protective cabinet 4 includes a top wall 4〇 and two side walls 42 in this example. The moving device 32 is illustrated in this example as a set of slide rails 32〇 disposed on the two side walls 42, the projector body 3〇 By the reciprocating slip of the slide rail 320, it can be hidden in the wall cabinet as the base 2, or the 201243478 fin day can be pulled, and the projection surface 1 can be obtained with a sufficient projection distance for convenience. Second, in this definition of the job ontology 3 〇 秘 赖 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 The mirrors 3〇4 are collectively defined as a light machine. Since the wall cabinet as the pedestal 2 is sinful, when the gantry body is housed in the protective cabinet 4, it is not exposed to the position away from the wall, especially the upward light of the projector body 30. The area 3〇2〇 will be covered by the top wall 4〇 and the two side walls 42 to greatly reduce the dust and water to the pollution of the fresh 'and then the dust and the purpose of the damage. Relatively when the projector body 3 is pulled to the operating position 46 by the slide rail 32 (also, the pivot 'rotation)) for sliding the projector body 3G from the storage position 44 to the operating position 46 'When the rhyme body 3G is mixed to the operating position #, the upward light exiting area 3020 is exposed to the outside and the projection surface i reaches a projection door, the light beam generated by the light source is modulated, and is emitted from the light exiting area. The upper light-emitting area 3G2G hits the projection surface, so that it can be found that the distance between the two parts can be determined by the distance, and the distance is fixed. Therefore, there is no need to move another. 4 can be completed by placing the sin near the wall. Tian...,: Those skilled in the art can easily understand that the above-mentioned short focal length projector is set in the wall cabinet t' is only a solid type of the case, and Lin is used as a button. As shown in Fig. 5, Fig. 6, if The conventional portable sound system is modified, and the short focal length projector of the present invention is disposed on, for example, the central portion of the towel, and (4) is used as the base 2 of the towel of the present example, and the portable type can be folded. As the projection surface i in this example, the screen is installed in the left and right 剩 彳 剩 剩 剩 , , , , , , , 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 Before the system, the Tisting Theatre group should be placed in a suitable position such as the wall. Of course, even if it is placed on the grass in the wild, it will be used as a projection of Φ 1. '... In this example, if device 32' is primarily a set of pivots 322, 'Let the projector body buckle, can be pivoted relative to 'eight' for the projector body 3, as shown in Figure 6. The storage position is privately rotated to the operating position. As for the projector body 30, the beam is generated in the same way as the previous one. 'The main thing is to light the light and then reflect it through the upward light exit area 3020. Technical shooting surface 1'. Moreover, because of the projection surface of this device, and the projector body 3〇, 201243478, it is only necessary to rotate the projector body 3G and use it. ^, the projector body 30, its own bottom wall 41, and the rear side wall 43 are turned to "rear and upper" so that the projector body 30, when located at the storage position 44, will be subjected to its own casing 302' and both sides. Remaining, the side wall 42 of the eight, the shadow, the 0 upward light exit area, and the secondary mirror 3〇4 inside the casing 3〇2 are not easily damaged by dust and external force. It is understood that the light source and the optical device of the above-mentioned frequency-dividing towel must also be considered as shown in the preferred embodiment of the present invention, and the light source 306" and the partial modulation are from the light source, 3〇6, The optical element of the light beam is disposed at a side position 'only a portion including, for example, the secondary mirror 3G4' is defined as a light machine, and can move relative to the light source along with the casing 302", thereby defining a storage position of the light machine, And an operation position that exposes the light exiting area and reaches the projection surface from the projection surface. Therefore, when entering the storage position, the components such as 'secondary mirror 304' and light source 306' are completely covered and protected; When using, 'only need to pull out the secondary mirror 3〇4, and the casing 3〇2” To the operating position Projection action. Therefore, the projector body of the present invention can easily ensure an appropriate distance from the projection surface during operation and is easy to operate; the storage body can be properly protected, thereby reducing the secondary mirror and the upward light exit area from being unnecessary. Contamination or damage, to ensure the quality of the projection; and the small volume occupied after storage, effectively saving the space required for storage, and easy to store, load, and carry; it can be easily combined with, for example, eight or the curtain, etc. A portable, portable home theater that achieves all of the objectives of the present invention. The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent change and modification according to the scope of the present invention and the contents of the invention description. All should remain within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the state of use of a conventional projector. 2 is a schematic view showing the structure and operation of a conventional short focal length projector. 3 is a schematic view showing the storage state of the short focal length projector of the first preferred embodiment of the present invention. 4 is a schematic view showing the operation state of the short focal length projector of the embodiment of FIG. 3. 201243478 Status = Figure is the storage of the home theater with the short focal length projector of the second preferred embodiment of the present invention. Fig. 6 is a schematic view showing the state of use of the embodiment of Fig. 5. Fig. 7 is a view showing the storage state of the mobile optical machine of the short focal length projector of the third preferred embodiment of the present invention. [Description of main component symbols] The projection surface of this component...1 > r pedestal.....2, 2' Projector...3 Projector body...30, 30' Housing...302, 302', 302" Light source..... 306" Up light exit area...3020, 3020, secondary mirrors...304,304, , 304 ” sports equipment...32,32, slide rail...320 pivot...322, protection cabinet...4,4' top wall.... ..40 side wall...42,42' storage position...44,44, operating position...46,46' bottom wall.....41, rear side wall. .....43' conventional component projector...5 secondary mirror...204 light modulation device...208 body...202 Light source.....206 8