201245847 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種顯示布幕，特別係關於一種可摺 疊式的顯示布幕模組。 【先前技術】 一般投影機或具捲曲之撓性〇LED薄膜電視等係將 影像訊號投影至一大尺寸顯示面板或顯示布幕以提升色 彩對比度及色彩飽和度，達到較佳之視覺效果。 請參閱第1圖，其繪示習知顯示布幕1〇伸縮架 時之示意圖。如圖所示，習知顯示布幕10 布幕12、桿们3、支撐架U及底座15。布幕 捲軸11内，且布幕12之一端連結於桿件13。當布幕12 展開後，布幕12利用桿件π固定於支撐架14之一端， 以提供布I 12 -張力。此外，顯示布幕1()係利用一連 結於捲軸11之錢15設置於一平面上。然@，上述之 顯示布幕1G由於布幕12受力不均其表面容易產生敵摺 12a ° 習知技術中，係利用增加支撐架14的數量，以提供 布幕12更多的張力，但如此將增加其體積、重量，不利 於攜帶。此外，在布幕12收納與展開於捲軸n的過程 中，谷易因擠壓使布幕12產生永久的變形。 、近年來，隨著可攜帶式之投影裝置及顯示裝置趨向 3遍，一種便於攜帶的顯示布幕即高度被需求。可摺疊 式的顯示布幕即可克服體積過大及重量過重的問題，^ ΡΝ級略购麟她7_Η 3 201245847 布幕表面容易產生皺摺的缺點仍無法克服。 【發明内容】 由於習知技術中的顯示布幕之布幕表面容易產生皺 摺，特別係在布幕凹摺處容易產生永久之形變，進而影 響顯示布幕的成像品質，於是本發明提供一種避免布幕 表面產生皺摺的顯示布幕模組。 本發明之一目的在於提供一種顯示布幕模組，包括 一可摺式之背板、至少一支撐單元及一布幕。背板包括 一結合件，且支撐單元包括一可提供一張力之彈性構 件。支撐單元設置於背板上，而布幕藉由支撐單元連結 於背板。其中背板利用結合件摺疊於一第一位置以收納 布幕，或利用彈性構件所提供之張力展開於一第二位置 以支撐布幕。 透過本發明的支撐單元所提供之張力，布幕將被提 供一均勻的張力以利其延展並攤平，進而避免皺摺形成 於布幕之表面，改善習知技術中所存在的缺點。 為使本發明之上述目的、特徵和優點能更明顯易 懂，下文特舉較佳實施例並配合所附圖式做詳細說明。 【實施方式】 茲配合圖式說明本發明之較佳實施例。 請參見第2A、2B及3圖，第2B圖顯示本發明之較 佳實施例之元件分解圖，第3圖顯示第2A圖中沿a-a線 段朝A方向所視之剖面圖。本發明之顯示布幕模組50包 ΡΝΑ1'Α00175'Τ\νΧΧ_0814'Α43078Τ\νΡ/>π7 4 201245847 括一背板100、二個支撐單元200及一布幕300。 背板100包括一本體110、二個摺板120及二個結合 件130 ’其中背板1 〇〇可相對於一轴線C1進行摺疊。相 鄰於軸線C1，本體110具有一突出部112。詳而言之， 突出部112係相對於背板100之背面1〇2向外突出，並 形成一凹槽112a’其中凹槽i12a係凹陷於背板】00之正 面 101。 二個摺板120分別設置於本體110之兩側，且可利 用一轴線C2相對於本體110進行樞轉。相對於每一摺板 120的位置，結合件13〇設置於背板1〇〇之背面1〇2。在 本實施例中，結合件130為一磁性元件，然不應被限制 於此，熟悉此技藝者可利用習知之機構裝置取代，例如 设置卡勾結構（未圖示）於背板！ 〇〇之側邊。 支撲單元200包括八個連結件21〇、二個彈性構件 220及二個基板23〇〇每一連結件21〇具有一门字型之外 型，且每二個連結件210之開口彼此相對，形成一導執 213連結件210係設置於凹槽1丨2a之兩侧，並利用其 侧面212連結於背板100之正面ιοί。此外，連結件21〇 之長度延伸方向係平行於背&刚之側邊。換句話說， 凹槽112a之兩側分別具有二個連結件21〇彼此相對，以 形成一導軌213，且位於凹槽112a兩側之導軌213位於 同一直線上。 彈性構件220為一具有曲面221的長條金屬片，其 長度延伸方向係平行於連結件21G的長度延伸方向，且 其曲率中心的連線c係平行於彈性構件22〇之長度延伸 PNAI-A00175-TWXX_08H，A43078TWF/3erry c 201245847 方向（第3圖）。彈性構件22〇連結凹槽U2a兩侧的導軌 213之間，其中彈性構件22〇之曲面221之凸面係朝向背 板100。彈性構件220在不受外力擠壓的情況下，受惠於 曲面221的設計以及其自身金屬片之剛性的貢獻，可保 持筆直。當彈性構件220受一外力擠壓後，曲面221被 凹摺為平面，但彈性構件22〇自身之恢復力將在外力移 除後恢復原始造型。 在此實施例中，彈性構件220之曲率半徑r約為4 公分，長度L為15公分、厚度τ為0.114-0.13公釐，且 其組成成分包括中碳鋼，但不應限定於此。凡是一在指 疊後可恢復至原始造型之材料皆可視為本發明之彈性構 件220。關於彈性構件220之應用將於後方再作說明。 基底230係一壓克力薄板，設置於凹槽i丨2a之兩 側’且透過膠合的方式連結於連結件210之侧面211。布 幕300由一可彈性變形之材質所構成，以包覆或貼覆的 方式設置於基底230之表面。基底230提供布幕3〇〇基 本的張力’避免布幕300與基底230接觸之表面產生皺 摺。值得注意的是，為了凹摺布幕300,布幕300在相對 於凹槽112a的位置未與基底230連結。 本發明之操作說明如下，請參見第4圖，第4圖顯 示本發明之投影布幕模組50於一第一位置時之上視圖。 當布幕300收納於背板1〇〇内時，部分彈性構件22〇及 布幕300位於凹槽112a内，並受背板1〇〇之擠壓而彎曲 變形。摺板12〇之正面ιοί接觸於本體11()之正面1〇1， 使二個磁性元件130相互結合，以阻抗彈性構件22〇因 ΡΝΑΙ'Α00175*Τ\νΧΧ_0814'Α43078Τ\νΡ/<^Γτγ 6 201245847 彎曲所產生之恢復力F。 請參閱第2A圖，第2A圖顯示本發明之投影布幕模 組50於一第二位置時之示意圖。當使用者欲使用投影布 幕模組50時，首先施予一外力將二個磁性元件130分 離。此時，彈性構件220之恢復力F(第4圖）將驅使背板 110以軸線C1為轉軸而展開。由於彈性構件220本身具 有一剛性，當彈性構件220恢復至原先形狀時，位於凹 槽112a兩側之導軌213將位於同一直線上。換言之，彈 性構件220提供一張力使複數個連結件210位於同一直 線上，進而使連結於連結件210之布幕300接收一張力， 該張力均勻地拉平布幕300,使布幕300表面之皺摺消失。 又，由於布幕300本身係由一可彈性變形之材質所 構成，沿該張力方向具有一延展性，可避免過大的張力 導致布幕300破裂，且布幕300受擠壓時不易產生永久 變形。此外，透過二個摺板120，本發明之顯示布幕模組 50可直立於一平面。 應注意的是，本發明之顯示布幕模組50之支撐單元 200的形式不應被限制，其中基底230係為了增加布幕 300之張力而設置的，但並非本發明之必要元件。熟悉此 技藝者可藉由增加結合件210及彈性構件220的數量， 並將布幕300直接設置於結合件210之側面211同樣能 達成上述之功效。 本發明之顯示布幕模組利用支撐元件提供布幕一張 力，進而避免布幕表面產生影響成像品質之皺摺，且本 發明之顯示布幕模組收納後的體積相對於傳統之顯示布 ΡΝΑΡΑ00175·Τ\νΧΧ_0814^Α43078Τν/Ρ/_^Γτγ 7 201245847 幕來的小，更有利於隨身攜帶。 雖然本發明已以較佳實施例揭露於上，然其並非用 以限定本發明，任何熟習此項技藝者，在不脫離本發明 之精神和範圍内，當可作些許之更動與潤飾，因此本發 明之保護範圍當視後附之申請專利範圍所界定者為準。 PNAl-AC-0175^TWXX_0814-A43078TWF/jerry 8 201245847 【圖式簡單說明】 第1圖顯示習知技術之顯示布幕之示意圖； 第2A圖顯示本發明之較佳實施例之顯示布幕模組 於第二位置時之示意圖； 第2B圖顯示本發明之較佳實施例之顯示布幕模組 之元件分解圖； 第3圖顯示第2A圖中沿a-a線段朝A方向所視之 部分元件剖面圖；以及 第4圖顯示本發明之較佳實施例之顯示布幕模組於 第一位置時之上視圖。 【主要元件符號說明】 10〜顯示布幕； 11〜捲轴； 12〜布幕； 12a〜皺摺； 13〜桿件； 14〜支撐架； 15〜底座； 50〜顯示布幕模組； 100〜背板； 101〜正面； 102〜背面； 110〜本體； 112〜突出部； PNAI'A00175'TWXX_0814'A43078TWF/jerry 9 201245847 112a〜凹槽； 120~摺板； 130〜結合件、磁性元件； 200〜支撐單元； 210〜連結件； 211、212〜侧面； 220〜彈性構件； 221〜曲面； 230~基板； 300〜布幕； C〜連線；201245847 VI. Description of the Invention: [Technical Field] The present invention relates to a display screen, and more particularly to a foldable display screen module. [Prior Art] A general projector or a flexible 〇LED film TV with a curling system projects image signals onto a large-size display panel or display screen to enhance color contrast and color saturation for better visual effects. Please refer to FIG. 1 , which is a schematic view showing a conventional display screen 1 telescopic frame. As shown, the display screen 10 screen 12, the poles 3, the support frame U and the base 15 are conventionally shown. Inside the curtain reel 11, one end of the curtain 12 is coupled to the rod 13. When the curtain 12 is unfolded, the curtain 12 is fixed to one end of the support frame 14 by means of a rod π to provide the cloth I 12 - tension. Further, the display screen 1() is set on a plane by a money 15 attached to the reel 11. However, the above display screen 1G is easy to generate enemy folds due to the uneven force of the curtain 12. In the prior art, the number of the support frames 14 is increased to provide more tension of the curtain 12, but This will increase its volume and weight, which is not conducive to carrying. Further, in the process of accommodating and unfolding the curtain 12 in the reel n, the valley is permanently deformed by the squeezing. In recent years, as portable projectors and display devices have tended to be three times, a portable display screen has been highly demanded. The foldable display screen can overcome the problem of oversize and overweight. ^ ΡΝ级略购麟7_Η 3 201245847 The shortcomings of the surface of the curtain are prone to wrinkles. SUMMARY OF THE INVENTION The shutter surface of the display screen in the prior art is prone to wrinkles, especially in the concave fold of the curtain, which is prone to permanent deformation, thereby affecting the image quality of the display screen. Therefore, the present invention provides a A display curtain module that avoids wrinkles on the surface of the screen. An object of the present invention is to provide a display screen module comprising a foldable back panel, at least one support unit and a curtain. The backing plate includes a coupling member, and the support unit includes an elastic member that provides a force. The support unit is disposed on the backboard, and the curtain is coupled to the backboard by the support unit. The back panel is folded in a first position by the coupling member to receive the curtain, or is stretched in a second position by the tension provided by the elastic member to support the curtain. Through the tension provided by the support unit of the present invention, the curtain will be provided with a uniform tension to facilitate its spread and flattening, thereby preventing wrinkles from forming on the surface of the curtain, improving the disadvantages of the prior art. The above described objects, features and advantages of the present invention will become more apparent from the description of the appended claims. [Embodiment] A preferred embodiment of the present invention will be described with reference to the drawings. 2A, 2B, and 3, FIG. 2B shows an exploded view of the preferred embodiment of the present invention, and FIG. 3 shows a cross-sectional view taken along line a-a of FIG. 2A in the direction of A. The display screen module 50 of the present invention includes Α1'Α00175'Τ\νΧΧ_0814'Α43078Τ\νΡ/> π7 4 201245847 includes a back plate 100, two support units 200 and a curtain 300. The backing plate 100 includes a body 110, two flaps 120 and two coupling members 130' wherein the backing plate 1 is foldable relative to an axis C1. Adjacent to the axis C1, the body 110 has a projection 112. In detail, the protruding portion 112 protrudes outwardly with respect to the back surface 1〇2 of the backing plate 100, and a recess 112a' is formed in which the recess i12a is recessed on the front surface 101 of the backing plate 00. Two flaps 120 are respectively disposed on both sides of the body 110, and can pivot relative to the body 110 by using an axis C2. The joint member 13 is disposed on the back surface 1〇2 of the back plate 1〇〇 with respect to the position of each of the flaps 120. In the present embodiment, the coupling member 130 is a magnetic member, but should not be limited thereto. Those skilled in the art can replace it with a conventional mechanism device, for example, a hook structure (not shown) is provided on the backboard! The side of the cockroach. The smashing unit 200 includes eight connecting members 21, two elastic members 220 and two substrates 23, each of which has a door-shaped shape, and the openings of each of the two connecting members 210 are opposite to each other. The guide member 213 is formed on both sides of the groove 1丨2a, and is coupled to the front side of the back plate 100 by the side surface 212 thereof. Further, the length of the link member 21'' extends in a direction parallel to the side of the back & In other words, the two sides of the recess 112a respectively have two connecting members 21 〇 opposed to each other to form a guide rail 213, and the guide rails 213 located on both sides of the recess 112a are located on the same straight line. The elastic member 220 is an elongated metal piece having a curved surface 221 extending in a direction parallel to the length extending direction of the connecting member 21G, and the connecting line c of the center of curvature extends parallel to the length of the elastic member 22〇 PNAI-A00175 -TWXX_08H, A43078TWF/3erry c 201245847 Direction (Fig. 3). The elastic member 22 is coupled between the guide rails 213 on both sides of the recess U2a, wherein the convex surface of the curved surface 221 of the elastic member 22 is directed toward the back plate 100. The elastic member 220 can be kept straight by the design of the curved surface 221 and the contribution of the rigidity of its own metal sheet without being squeezed by an external force. When the elastic member 220 is pressed by an external force, the curved surface 221 is concavely folded into a flat surface, but the restoring force of the elastic member 22 itself is restored to the original shape after the external force is removed. In this embodiment, the elastic member 220 has a radius of curvature r of about 4 cm, a length L of 15 cm, a thickness τ of 0.114 to 0.13 mm, and a composition thereof including medium carbon steel, but is not limited thereto. Any material that can be restored to its original shape after the fingering can be considered as the elastic member 220 of the present invention. The application of the elastic member 220 will be described later. The base plate 230 is an acryl sheet which is disposed on both sides of the recess i2a and is coupled to the side surface 211 of the joint 210 by gluing. The screen 300 is composed of an elastically deformable material and is provided on the surface of the substrate 230 in a covering or pasting manner. The base 230 provides the basic tension of the curtain 3 to avoid wrinkling of the surface of the curtain 300 in contact with the substrate 230. It is to be noted that, for the concave folding screen 300, the curtain 300 is not coupled to the base 230 at a position relative to the recess 112a. The operation of the present invention is as follows, see Fig. 4, which shows a top view of the projection screen module 50 of the present invention in a first position. When the curtain 300 is received in the back panel 1 , the partial elastic members 22 and the curtain 300 are located in the recess 112a and are bent and deformed by the pressing of the back panel 1 . The front surface ιοί of the flap 12 is in contact with the front surface 1 of the body 11 (), so that the two magnetic elements 130 are combined with each other to resist the elastic member 22 because ΡΝΑΙ 'Α00175*Τ\νΧΧ_0814'Α43078Τ\νΡ/<^ Γτγ 6 201245847 The restoring force F produced by bending. Referring to Figure 2A, Figure 2A shows a schematic view of the projection screen module 50 of the present invention in a second position. When the user wants to use the projection screen module 50, an external force is first applied to separate the two magnetic elements 130. At this time, the restoring force F (Fig. 4) of the elastic member 220 urges the back plate 110 to be unfolded with the axis C1 as the axis of rotation. Since the elastic member 220 itself has rigidity, when the elastic member 220 returns to the original shape, the guide rails 213 located on both sides of the recess 112a will lie on the same straight line. In other words, the elastic member 220 provides a force to make the plurality of connecting members 210 on the same straight line, so that the curtain 300 attached to the connecting member 210 receives a force which evenly flattens the curtain 300 to wrinkle the surface of the curtain 300. The fold disappeared. Moreover, since the curtain 300 itself is composed of an elastically deformable material, it has a ductility along the tension direction, which avoids excessive tension and causes the curtain 300 to be broken, and the curtain 300 is less likely to be permanently deformed when being pressed. . In addition, the display panel module 50 of the present invention can be erected on a plane through the two flaps 120. It should be noted that the form of the support unit 200 of the display screen module 50 of the present invention is not limited, and the substrate 230 is provided for increasing the tension of the curtain 300, but is not an essential component of the present invention. Those skilled in the art can also achieve the above-mentioned effects by increasing the number of the bonding members 210 and the elastic members 220 and directly arranging the curtain 300 on the side 211 of the bonding member 210. The display screen module of the present invention provides a force for the curtain by using the supporting member, thereby avoiding wrinkles which affect the image quality on the surface of the screen, and the volume of the display screen module of the present invention is compared with the conventional display fabric 00175. ·Τ\νΧΧ_0814^Α43078Τν/Ρ/_^Γτγ 7 201245847 The small curtain is more convenient to carry around. Although the present invention has been disclosed in its preferred embodiments, it is not intended to limit the present invention, and it is possible to make some modifications and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims. PNAl-AC-0175^TWXX_0814-A43078TWF/jerry 8 201245847 [Simplified Schematic] FIG. 1 is a schematic view showing a display screen of a conventional technology; FIG. 2A is a view showing a display screen module according to a preferred embodiment of the present invention; 2B is an exploded view of the display panel module of the preferred embodiment of the present invention; and FIG. 3 is a partial cross-sectional view of the component viewed along the aa line in the A direction in FIG. 2A. Figure 4 and Figure 4 show an upper view of the display panel module in a first position in accordance with a preferred embodiment of the present invention. [Main component symbol description] 10~ display screen; 11~ reel; 12~ curtain; 12a~ wrinkle; 13~ rod; 14~ support frame; 15~ base; 50~ display curtain module; ~ back plate; 101 ~ front; 102 ~ back; 110 ~ body; 112 ~ protrusion; PNAI 'A00175 'TWXX_0814 'A43078TWF / jerry 9 201245847 112a ~ groove; 120 ~ flap; 130 ~ joint, magnetic components; 200~support unit; 210~joining member; 211, 212~ side; 220~elastic member; 221~curved surface; 230~substrate; 300~clothing; C~connecting;
Cl、C2〜轴線； L~長度； T〜厚度； R〜曲率半徑； A〜方向。 ΡΝΑΙ-Α00175-Τ\νΧΧ_0814-Α43078Τ\νΡ/]εΓΓν 10Cl, C2~ axis; L~ length; T~ thickness; R~ radius of curvature; A~ direction. ΡΝΑΙ-Α00175-Τ\νΧΧ_0814-Α43078Τ\νΡ/]εΓΓν 10