201248301 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種可攜式投影幕裝置’尤其是〜種便 於開啟之可攜式投影幕裝置。 【先前技術】 在現代人的生活中，常常會使用投影機、投影幕等來 進行簡報或教學。目前最常見的使用方式是藉由可移動之 投影機’投影到固定位置上的投影幕以顯示影像。隹若欲 在室外或沒有投影幕的室内場所進行教學或簡報時，就必 須額外準備投影幕；因此目前投影機及投影幕皆朝著可褐 帶的方向發展。 習知的技術多朝向在投影幕上設置支撐座支撐投影 幕’此類投影幕在開啟後須手動調整支撐座的位置，使用 完畢後也必須手動將支撐座收起，使用上較不方便。因此， 有必要提供一種便於開啟、收藏及攜帶之投影幕，以解決 先前技術之缺失。 \ 【發明内容】 旁月之主要目的係在提供一種可攜式投影幕裝 為達成上述之目的，本發明之攜 = 榮幕布、第-殼體、第二般體、第 一殼體包含第-前端及第m殼社含^东 201248301 及第二後端；第三殼體分別連接於第一殼體之第一前端及 第二殼體之第二前端，且第一殼體、第二殼體及第三殼體 形成一凹槽。螢幕布分別連接於第一殼體及第二殼體。彈 性裝置包含第一端及第二端，分別連接於第一殼體及第二 殼體，當彈性裝置伸展時，第一殼體及第二殼體藉由彈性 裝置相對展開為開啟狀態，當彈性裝置收縮時，第一殼體 及第二殼體藉由彈性裝置相對重合形成閉合狀態。 【實施方式】 為讓本發明之上述和其他目的、特徵和優點能更明顯 易懂，下文特舉出本發明之具體實施例，並配合所附圖式， 作詳細說明如下。 以下請一併參考圖1及圖2，係關於本發明之可攜式 投影幕裝置之第一實施例。圖1為本發明可攜式投影幕裝 置第一實施例之開啟示意圖，係呈現本發明之可攜式投影 幕裝置1打開使用時之態樣。本發明之可攜式投影幕裝置 1包含螢幕布10、第一殼體20、第二殼體30、第三殼體 40及彈性裝置50。其中第一殼體20包含第一前端21及第 一後端22;第二殼體30則包含第二前端31及第二後端 32。第三殼體40分別連接於第一殼體20之第一前端21及 第二殼體30之第二前端31，且該第一殼體20、第二殼體 30及第三殼體40形成一凹槽90;螢幕布10則分別連接於 第一殼體20及第二殼體30。彈性裝置50包含第一端51 及第二端52，分別連接於第一殼體20及第二殼體30，用 以撐開第一殼體20及第二殼體30。彈性裝置50係沿著第 201248301 一殼體20、第二殼體30及第三殼體4〇設置，使彈性裝置 50的至少一部分容納於凹槽90中。當彈性裝置50伸展時， 第一殼體20及第二殼體30可藉由彈性裝置5〇展開為開啟 狀態。於本發明之一實施例中，第一殼體2〇、第二殼體3〇 及第三殼體40可以是塑膠殼體、木質殼體、紙板殼體等； 螢幕布10可以是投影幕布、可書寫/擦拭之螢幕布等；彈 性裝置50可以是彈簣等裝置，但本發明不以此為限。第三 殼體40可呈現為圓弧狀、U字型、多角形等形狀，但本發 明不以此為限。本發明之可攜式投影幕裒置丨可藉由彈性 裝置50自動樓開第一设體20及第二殼體，並使第—气 體20及第二殼體30之間的失角為一固定的角度。因此連 接於其上的螢幕布H)也可跟著_開，藉以顯示投影影 像、在其上書寫/擦拭等。第一殼體20、第二殼體3〇及第 二殼體40於展開時可作為支撐腳座。 * 接著請參考圖2，係關於本發明可攜式投影幕裝 :實施例之閉合示意圖’係呈現本發明之可 置1收合時之態樣。欲收合可攜式投影幕 又〜幕装 一殼體20、第二殼體30分別對向施力:1時’於第 縮，則第一殼體20及第二殼體30可相對性裝置50收 態。當可攜式投影幕裝置1收合時，可_合形成閉合狀 第二殼體30及第三毅體40將螢幕布1〇'第一殼體20、 中，方便攜帶或㈣，並能避免灰塵$心3於凹槽90其 會使螢幕布 1〇上產生減。 幕布’也不 接著請參考圖3及圖4，係關於太 幕製置之第二實施例。圖3為本發明^可攜式投影 碼式杈影幕裝置第 201248301 二實施例之開啟示意圖。於此實施例中，本發明之可攜式 投影幕裝置la除螢幕布10、第一殼體20、第二殼體30、 第三殼體40及彈性裝置50外，更包含了第一支持裝置60、 第二支持裝置70及接合裝置80。第一支持裝置60及第二 支持裝置70分別連接於第一殼體20之第一後端22及第二 殼體30之第二後端32，於可攜式投影幕裝置la呈開啟狀 態時，可用以支撐可攜式投影幕裝置la。當本發明之可攜 式投影幕裝置la展開時，即可藉由第一支持裝置60及第 二支持裝置70支撐可攜式投影幕裝置la，使其能更為穩 固。於本發明之一實施例中，第一支持裝置60及第二支持 裝置70可以是塑膠板、木板、紙板等；接合裝置80可以 是磁性元件、鎖扣元件、黏合元件或彈性固定元件，例如 磁鐵與鐵片、鎖扣組、魔鬼氈、橡皮筋等，但本發明不以 此為限。另需注意的是，接合裝置80可以位於第一支持裝 置60及第二支持裝置70上，亦可位於第一殼體20與第二 殼體30上，例如一磁鐵配合一鐵片，但本發明不以此為 限。接合裝置80亦可能是以單獨的形式出現，例如直接以 橡皮筋綁缚在可攜式投影幕裝置la之外部。 接著請參考圖4,係關於本發明可攜式投影幕裝置第 二實施例之閉合示意圖。當可攜式投影幕裝置la合起時， 第一支持裝置60及第二支持裝置70可分別以第一後端22 及第二後端32為軸而向螢幕布10方向摺疊，藉由接合裝 置80接合第一殼體20與第二殼體30，由第一殼體20、第 二殼體30及第三殼體40形成的凹槽90將螢幕布10包含 於其中，方便攜帶或移動。 201248301 綜上所陳，本發明無論就目的、手段及功效，在在均 顯示其迥異於習知技術之特徵，懇請貴審查委員明察， 早曰賜准專利，俾嘉惠社會，實感德便。惟應注意的是， 上述諸多實施例僅係為了便於說明而舉例而已，本發明所 主張之權利範圍自應以申請專利範圍所述為準，而非僅限 於上述實施例。 【圖式簡單說明】 圖1係本發明可攜式投影幕裝置第一實施例之開啟示意圖 圖2係本發明可攜式投影幕裝置第一實施例之閉合示意圖 圖3係本發明可攜式投影幕裝置第二實施例之開啟示意圖 圖4係本發明可攜式投影幕裝置第二實施例之閉合示意圖 【主要元件符號說明】 可攜式投影幕裝置l，la 螢幕布10 第一殼體20 第一前端21 第一後端22 第二殼體30 第二前端31 第二後端32 第三殼體40 201248301 彈性裝置50 第一端51 第二端52 第一支持裝置60 第二支持裝置70 接合裝置80 凹槽90201248301 VI. Description of the Invention: [Technical Field] The present invention relates to a portable projection screen device, in particular, a portable projection screen device that is easy to open. [Prior Art] In modern people's lives, projectors, projection screens, etc. are often used for presentations or teaching. The most common use at present is to display an image by projecting a projector onto a fixed position on a projection screen.隹If you want to teach or brief in an outdoor or indoor place without a projection screen, you must prepare an additional projection screen; therefore, both the projector and the projection screen are moving toward the brown belt. The conventional technology has a multi-directional support on the projection screen to support the projection screen. Such a projection screen has to manually adjust the position of the support after opening, and the support base must be manually retracted after use, which is inconvenient to use. Therefore, it is necessary to provide a projection screen that is easy to open, collect, and carry to solve the lack of prior art. \ [Summary of the Invention] The main purpose of the side of the moon is to provide a portable projection screen for the purpose of achieving the above, the carrier of the present invention, the first housing, the second housing, the first housing includes - the front end and the m-shell body include ^dong 201248301 and the second rear end; the third housing is respectively connected to the first front end of the first housing and the second front end of the second housing, and the first housing and the second housing The housing and the third housing form a recess. The screens are respectively connected to the first housing and the second housing. The elastic device includes a first end and a second end respectively connected to the first housing and the second housing. When the elastic device is extended, the first housing and the second housing are relatively opened by the elastic device. When the elastic device contracts, the first housing and the second housing are relatively closed by the elastic means to form a closed state. The above and other objects, features, and advantages of the present invention will become more apparent from the description of the appended claims. Hereinafter, please refer to FIG. 1 and FIG. 2 together for a first embodiment of the portable projection screen apparatus of the present invention. 1 is a schematic view showing the opening of a portable projection screen device according to a first embodiment of the present invention, showing a state in which the portable projection screen device 1 of the present invention is opened for use. The portable projection screen device 1 of the present invention comprises a screen cloth 10, a first casing 20, a second casing 30, a third casing 40 and an elastic means 50. The first housing 20 includes a first front end 21 and a first rear end 22; the second housing 30 includes a second front end 31 and a second rear end 32. The third housing 40 is respectively connected to the first front end 21 of the first housing 20 and the second front end 31 of the second housing 30, and the first housing 20, the second housing 30 and the third housing 40 are formed. A groove 90; the screen cloth 10 is connected to the first casing 20 and the second casing 30, respectively. The elastic device 50 includes a first end 51 and a second end 52 connected to the first housing 20 and the second housing 30 respectively to open the first housing 20 and the second housing 30. The resilient means 50 is disposed along a housing 20, a second housing 30 and a third housing 4 of the 201248301 such that at least a portion of the resilient means 50 is received in the recess 90. When the elastic means 50 is extended, the first housing 20 and the second housing 30 can be unfolded to an open state by the elastic means 5. In one embodiment of the present invention, the first housing 2, the second housing 3, and the third housing 40 may be a plastic housing, a wooden housing, a cardboard housing, etc.; the screen cloth 10 may be a projection screen The device can be written/wiped, and the elastic device 50 can be a device such as a magazine, but the invention is not limited thereto. The third housing 40 may be in the shape of a circular arc, a U-shape, a polygon, or the like, but the invention is not limited thereto. The portable projection screen device of the present invention can automatically open the first installation body 20 and the second housing by the elastic device 50, and the loss angle between the first gas 20 and the second housing 30 is A fixed angle. Therefore, the screen cloth H) connected thereto can be followed by _ on, thereby displaying the projected image, writing/wiping thereon, and the like. The first housing 20, the second housing 3, and the second housing 40 serve as support feet when deployed. * Reference is now made to Fig. 2 for a portable projection screen of the present invention: a closed schematic view of the embodiment is a representation of the present invention. In order to retract the portable projection screen, the first housing 20 and the second housing 30 are opposite each other. Device 50 is in a closed state. When the portable projection screen device 1 is folded, the second casing 30 and the third body 40 can be formed into a closed casing 1 〇 'the first casing 20, convenient for carrying or (4), and can Avoiding dust $3 in the groove 90 will cause a reduction in the screen cloth. The curtain 'also does not refer to Figs. 3 and 4, respectively, relating to the second embodiment of the curtain manufacturing. FIG. 3 is a schematic diagram showing the opening of the second embodiment of the portable video coded video screen device of the present invention. In this embodiment, the portable projection screen device 1 of the present invention includes the first support in addition to the screen cloth 10, the first housing 20, the second housing 30, the third housing 40, and the elastic device 50. Device 60, second support device 70, and bonding device 80. The first support device 60 and the second support device 70 are respectively connected to the first rear end 22 of the first housing 20 and the second rear end 32 of the second housing 30, when the portable projection screen device la is in an open state. It can be used to support the portable projection screen device la. When the portable projection screen device 1a of the present invention is unfolded, the portable projection screen device 1a can be supported by the first support device 60 and the second support device 70 to make it more stable. In an embodiment of the present invention, the first supporting device 60 and the second supporting device 70 may be plastic plates, wood boards, cardboard, etc.; the engaging device 80 may be a magnetic element, a locking element, an adhesive element or an elastic fixing element, for example Magnets and iron sheets, lock sets, devil felts, rubber bands, etc., but the invention is not limited thereto. It should be noted that the bonding device 80 may be located on the first supporting device 60 and the second supporting device 70, or may be located on the first housing 20 and the second housing 30, for example, a magnet is coupled with an iron piece, but The invention is not limited to this. The engagement means 80 may also be in a separate form, such as directly tied to the outside of the portable projection screen unit 1a by a rubber band. Referring now to Figure 4, there is shown a closed schematic view of a second embodiment of the portable projection screen apparatus of the present invention. When the portable projection screen device 1a is assembled, the first support device 60 and the second support device 70 can be folded toward the screen cloth 10 with the first rear end 22 and the second rear end 32 as axes, respectively, by being engaged. The device 80 engages the first housing 20 and the second housing 30, and the recess 90 formed by the first housing 20, the second housing 30 and the third housing 40 includes the screen cloth 10 therein for convenient carrying or moving. . 201248301 In summary, the present invention, regardless of its purpose, means and efficacy, shows its distinctive features of the prior art. You are requested to review the examinations, and grant the patents as early as possible. It is to be noted that the various embodiments described above are intended to be illustrative only, and the scope of the invention is intended to be limited by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing the opening of a first embodiment of a portable projection screen device of the present invention. FIG. 2 is a schematic diagram of a first embodiment of a portable projection screen device according to the present invention. FIG. FIG. 4 is a schematic diagram of the second embodiment of the portable projection screen device of the present invention. [Main component symbol description] Portable projection screen device 1, la screen 10 first housing 20 first front end 21 first rear end 22 second housing 30 second front end 31 second rear end 32 third housing 40 201248301 elastic device 50 first end 51 second end 52 first support device 60 second support device 70 joint device 80 groove 90