M279929 八、新型說明： 【新型所屬之技術領域】 本創作係涉及一種鍵盤，尤指一種具有背光且結構精 簡的背光鍵盤。 【先前技術】 筆記型電腦的薄型按鍵結構主要係於鍵帽與底板間組 裝連結有一剪刀式或架橋式支撐結構，而該種結構已揭露 φ 於：專利公告編號第319438號「具有剪刀式支臂元件之 按鍵開關」新型專利案及專利公告編號第282857號「鍵 盤子鍵結構」新型專利案，但該等既有鍵盤構造雖然輕巧 ’但由於僅能在光亮處操作而無法於黑暗處操作，故缺乏 在黑暗場合使用的效果，因此市面上有具有光源的背光鍵 盤的推出。 既有背光鍵盤大體上的結構，請看第六圖，其係設有 _ 一組裝基板（8 0 )，該組裝基板（8 〇 )係衝壓製成的 • 金屬板件，並對應各鍵帽（圖中未示）的位置設有複數組 相互配合的L形承接架（8丄）及導滑架（8 2 )，各組 承接架（8 1 )係有兩個且對稱設置，並且各導滑架（8 2 )亦係設有兩個且對稱設置。 於上述組裝基板（8 〇 )頂面依序設有一層薄膜電路 板（83)及一層橡膠壓鈕片（84)，其甲薄膜電路板 (8 3 )上設有複數個對應鍵帽的壓點（8 3丄），藉由 壓點（8 3 1 )導通按鍵訊號，並且橡膠壓鈕片（8 4 ) 對應各壓點（8 3 1 )向上伸設有一鍵環（8 4丄），而 4 M279929 係穿過薄膜電 橡膠壓鈕片（ 緣’架橋的上 (8 4 1 )的 各組L形承接架（8 1 )及導滑架（8 2 ) 路板（8 3)及橡膠壓紐片（84)而穿出 8 4)外，並枢接一架橋（圖中未示）的下 緣樞接鍵帽的底部，鍵帽的底部並接觸鍵環 頂端。 於上述組裝基板（8〇)的底面依序設有一導光板（ 85)、一發光體定位片（86)及一底板（87)，其 _ 中導光板（85)於底部設有一導光反射區（851)， 發光體定位片（8 6 )上嵌設有複數個發光元件（8 β工 )，而底板（8 7 )係金屬板件並設於發光體定位片（8 6 )下’藉以加強整體的強度。 既有背光鍵盤藉由發光元件發光，透過導光板的導光 反射區將光線均勻向上反射，藉此將鍵盤的上面部份照亮 達到在黑暗中看清而使用的效果。 ， 然而，由於既有背光鍵盤其結合架橋及鍵帽的組裝基 • 板係由衝壓而折成的金屬板件，因此在使用上具有以;二 ，點· 1、組裝容易變形： (A )由於組裝基板係金屬板件，在製造組裝的前容 易因為外力的作用而產生不可回復的變形，使得組裝時與 其他零件不合，造成組裝上的困擾。 (B )此一結構為考量其透光之順暢性，故需於組裝 基板破除許多孔以利透光。當破孔越大或越多將會影響金 屬板件本身之強度，如此強度不足的情況下，在鍵帽組裝 M279929 時需使力組裝，屆時金屬板件之整體平面度將會形成波浪 狀，當壓鈕組立完成將整組鍵盤組配系統（電腦）時將會 產生無法平貼於系統（電腦）上的情況，故使用者壓按鍵 帽時易成生翹曲不平之罐頭效應情事發生。 2 生產製造及運送的穩定性不面：同前所述，除了 由於組裝時容易不合的狀況外，由於運送時常有碰撞搖晃 的情況發生，也會使組裝基板彎折變形而使整體組裝品質 不良。 3、 會有鍵帽觸發壓點不靈敏··如第1點的（b )項 所述，組裝基板易生成波浪狀，產生凹凸不平的情況，在 以鍵帽觸發壓點時容易因凹凸問題產生觸發壓點不靈敏的 問題。 4、 造成導光板損傷··由於組裝基板與導光板之間會 有滑動的情形，使得金屬衝壓板件製成的組裝基板會摩擦 造成導光板的損傷。 【新型内容】 由於既有背光鍵盤具有組裝容易變形、生產製造及運 达的穩定性不高及鍵帽觸發壓點不靈敏的缺點，本創作提 供一種背光鍵盤，將卡合架橋的各承接架及各導滑架直接 形成於導光的導光橋板上，藉以解決上述問題。 為達到上述目的，本創作係包括： 一導光橋板，該導光橋板係一可透光板體，於導光橋 板於頂面間隔排列佈設有複數組卡合構造，於導光橋板底 J的複數位置分散設有一導光反射區，並於導光橋板間隔 6 M279929 設有複數個容孔，於各容孔内容設有發光元件； -薄膜電路板，該薄膜電路板設於導光橋板的頂面， 於對應各組卡合構造的位置設有複數個可供卡合構造穿過 的鏤空孔，並於對應各組卡合構造的中間位置各設有一可 導通按鍵訊號的壓點； 複數個對應設於薄膜電路板所設各星點上方的鍵環； 複數個分別結合於導光橋板所設各組卡合構造的架橋 籲，各架橋係由第一框架及第二框架交又轴枢構成；以及 複數個係分別結合各架橋頂部的鍵帽。 進-步，本創作將各組卡合構造設為包括兩對稱之[ ^勾形承㈣及兩對稱的導滑塊，各組卡合構造的兩承接 木與兩導滑塊係相互間⑮，且兩承接架的開口向外，而兩 導滑塊於相對面較遠離各承接架的下側形成—道凹口，兩 承接架之間及各導滑塊並且各與該導光橋板 ——長形承接槽及一導滑槽； “成 • 所述架橋其第一框架的底緣形成一對應樞軸，並由上 而下穿過所述鏤空1，以可轉動型態設於該導光橋板的承 接槽内，第二框架的底緣兩側設有兩滑軸，並由上而下穿 過所述鏤空孔，以可滑動型態設於該導光橋板的導滑槽内 0 較佳的’本創作的發光元件係L E D。 而本創作發光元件的設置方式共有三種態樣·· 一其一，於該導光橋板其中設有複數個容孔，並於該導 光橋板底面設有一發光體定位片，發光體定位片上設有複 7 M279929 數個所述發光元件，且各發光元件並分別容置於導光橋板 的容孔内。 其二，於該導光橋板其中設有複數個容孔，並於該薄 膜電路板底面對應各容孔設有複數個所述發光元件，且各 發光元件並分別容置於導光橋板的容孔内。 其三，於該導光橋板其中設有複數個容孔，並於該導 光橋板底面設有一底板，其係金屬板件並於頂面設有複數 個所述發光元件，且各發光元件並分別容置於該導光橋板 的容孔内。 當本創作運用時，係利用容設於導光橋板其中的各發 光凡件發光，並藉由導光橋板的導光反射區將光線均勻向 上反射，藉此將位於上方的薄膜電路板、各鍵環、各架橋 及各鍵帽照亮，達到在黑暗中使用的效果。M279929 VIII. Description of new models: [Technical field to which new models belong] The present invention relates to a keyboard, especially a backlit keyboard with backlight and simplified structure. [Previous technology] The thin key structure of a notebook computer is mainly composed of a scissor-type or bridge-type support structure assembled and connected between the keycap and the bottom plate, and this structure has been disclosed in φ: Patent Announcement No. 319438 "with scissors-type support A new type of patent for the key element switch of the arm element and a new type of patent for the “Keyboard Sub-Key Structure” of Patent Bulletin No. 282857, but these existing keyboard structures, although lightweight, cannot be operated in the dark because they can only be operated in bright places. Therefore, it lacks the effect of using in dark places, so there is a backlight keyboard with a light source on the market. The general structure of the existing backlit keyboard, please see the sixth figure, which is equipped with an assembly substrate (80), the assembly substrate (80) is made of stamped metal plates and corresponds to each keycap (Not shown in the figure) is provided with a complex array of L-shaped receiving racks (8 丄) and guide carriages (8 2). Each set of receiving racks (8 1) is provided in two and symmetrically arranged. The guide carriage (8 2) is also provided with two and symmetrically arranged. A thin film circuit board (83) and a rubber button (84) are sequentially arranged on the top surface of the assembly substrate (80), and a plurality of corresponding keycaps are provided on the first thin film circuit board (83). Point (8 3 丄), the key signal is turned on by the pressing point (8 3 1), and a rubber ring (8 4) corresponds to each pressing point (8 3 1) and a key ring (8 4 丄) is extended upward, And 4 M279929 is a group of L-shaped receiving frames (8 1), guide slides (8 2), road plates (8 3) and rubber that pass through the thin-film electric rubber pressing button (on the edge (8 4 1) of the bridge). Press the button (84) to go out 8 4), and pivotally connect the lower edge of a bridge (not shown) to the bottom of the keycap, and the bottom of the keycap and the top of the key ring. A light guide plate (85), a luminous body positioning sheet (86), and a bottom plate (87) are sequentially arranged on the bottom surface of the assembly substrate (80). The light guide plate (85) is provided with a light guide reflection at the bottom. Area (851), a plurality of light-emitting elements (8 β workers) are embedded in the luminous body positioning piece (8 6), and the bottom plate (8 7) is a metal plate and is arranged under the luminous body positioning piece (8 6) ' To strengthen the overall strength. The existing backlit keyboard emits light through the light emitting elements, and reflects light upwards uniformly through the light guide reflection area of the light guide plate, thereby illuminating the upper part of the keyboard to achieve the effect of seeing it in the dark. However, since the existing backlit keyboard is combined with the bridge and the keycap assembly base plate is a metal sheet piece folded by stamping, it has the following features in use: 2. Points are easy to assemble: (A) Because the assembly substrate is a metal plate, it is easy to produce irreversible deformation due to the external force before manufacturing and assembly, which makes it different from other parts during assembly, causing assembly troubles. (B) This structure considers the smoothness of light transmission, so many holes need to be removed on the assembly substrate to facilitate light transmission. When the hole is larger or more, it will affect the strength of the metal plate itself. In the case of such insufficient strength, force assembly is required when the key cap is assembled M279929, and then the overall flatness of the metal plate will become wavy. When the button assembly is completed and the entire keyboard is assembled with the system (computer), it will not be able to be flatly attached to the system (computer). Therefore, when the user presses the keycap, the canned effect of warping and unevenness will occur. 2 The stability of production and transportation is not the same: as mentioned above, in addition to the situation that it is easy to be misaligned during assembly, because of frequent collision and shaking during transportation, the assembly substrate is also bent and deformed, resulting in poor overall assembly quality. . 3. There is insensitivity of the keycap trigger pressure point. As described in item (b) of point 1, the assembly substrate is prone to generate waves and unevenness. When the keycap triggers the pressure point, it is easy to cause bumps. The problem is that the trigger pressure point is not sensitive. 4. Damage to the light guide plate ... As there may be sliding between the assembly substrate and the light guide plate, the assembly substrate made of metal stamped plate parts may rub and cause damage to the light guide plate. [New content] Because the existing backlit keyboard has the disadvantages of easy assembly deformation, low manufacturing and delivery stability, and insensitive trigger pressure points of keycaps, this creation provides a backlit keyboard that engages the brackets and bridges of the bridge. The guide carriage is directly formed on the light guide bridge plate for light guide, thereby solving the above problems. In order to achieve the above purpose, the creative department includes: a light guide bridge plate, which is a light-transmissive plate body, and a plurality of array engaging structures are arranged on the light guide bridge plate at intervals on the top surface, and the light guide plate A plurality of light guide reflection areas are scattered at a plurality of positions on the bottom of the bridge plate J, and a plurality of space is provided between the light guide bridge plates 6 M279929, and a light emitting element is provided in each space;-a thin film circuit board, the thin film circuit board It is set on the top surface of the light-guiding bridge plate, a plurality of hollow holes through which the engaging structures pass are provided at positions corresponding to the groups of engaging structures, and a conductive hole is provided at each middle position corresponding to the engaging structures of each group. Pressure points of the key signals; a plurality of key rings corresponding to the star points provided on the thin-film circuit board; a plurality of bridges that are respectively combined with each group of engaging structures provided on the light guide bridge board, and each bridge system is provided by the first The frame and the second frame are intersected by a pivot; and a plurality of key caps are respectively combined with the top of each bridge. Further, in this creation, each group of engaging structures is set to include two symmetrical [^ hook-shaped bearing brackets and two symmetrical guide sliders, and the two bearing blocks and the two guide sliders of each group engaging structure are mutually connected. And the openings of the two receiving brackets are outward, and the two guide sliders are formed on the opposite side farther away from the lower sides of the respective receiving brackets-a notch, between the two receiving brackets and each of the guide sliders and each of the guide bridges. ——Long receiving groove and a guide chute; “Chapter • The bottom edge of the first frame of the said bridge forms a corresponding pivot axis, and passes through the hollow 1 from top to bottom, and is provided in a rotatable form at In the receiving groove of the light guide bridge plate, two sliding shafts are provided on both sides of the bottom edge of the second frame, and pass through the hollow hole from top to bottom, and are slidably provided on the light guide bridge plate. In the chute, 0 is better. The light-emitting elements of this creation are LEDs. There are three ways to set the light-emitting elements of this creation. One of them is provided with a plurality of receptacles in the light guide bridge board. A light-emitting body positioning sheet is provided on the bottom surface of the light-guiding bridge plate, and a plurality of the light-emitting elements are provided on the light-emitting body positioning sheet. The light components are respectively accommodated in the accommodation holes of the light guide bridge board. Second, a plurality of accommodation holes are provided in the light guide bridge board, and a plurality of the corresponding accommodation holes are provided on the bottom surface of the thin film circuit board. Light-emitting elements, and each light-emitting element is respectively accommodated in the accommodation hole of the light guide bridge plate. Third, a plurality of accommodation holes are provided in the light guide bridge plate, and a bottom plate is provided on the bottom surface of the light guide bridge plate. It is a metal plate and is provided with a plurality of said light-emitting elements on the top surface, and each light-emitting element is respectively housed in a container hole of the light-guiding bridge plate. Each light emitting element in the bridge plate emits light, and the light is reflected upwards uniformly through the light guide reflection area of the light guide bridge plate, thereby illuminating the thin film circuit board, key rings, bridges and key caps located above. To achieve the effect of using in the dark.
並且相較既有的背光鍵盤，本創作其樞接架橋及鍵帽 的導光橋板係-體製成，省去金屬衝壓製成的組裝基板， 有效縮減整體體積，除可以樞接卡合架橋外，並兼具有導 光的功能，而其一體製成的結構並具有以下功效： 1:組裝不易變形：由於導光橋板其形狀不會因弯折 而產生永久性變形’因此於組裝時不會因受外力而變形。 2、生產製造及運送的穩定性高：由於導光橋板不會 Μ㈣^ ’因此在組裝整體時穩定性冑，且運送 k中縱有外力施加，也不會變形。 肖費者刼作時不會有鍵帽觸發壓點不靈敏的情況 •由於樞接結合架播的莫 導先橋板其卡合構造不易變形，因 8 M279929 此不會有組裝好後架橋構造歪斜的情況，使得壓按鐽帽觸 動壓點非常靈敏。 【實施方式】 本創作係一種背光鍵盤，請參看第一至三圖的第一較 仏貝知例，其係包括一導光橋板（1 〇 )、一薄膜電路板 (20)、一橡膠壓鈕片（3〇)、複數個架橋（4〇) 、複數個鍵帽（5 0 )、一發光體定位片（6 〇 )及一底 _ 板（7 0 );其中， 導光橋板（1 0 )係一概呈長方形的可透光板體，其 於底部複數位置分散設有一導光反射區（丄丄），導光橋 板（1 0 )並於中央部位設有四個容孔（1 2 )，四個容 孔（1 2 )係以呈矩形的方式間隔散佈設置；導光橋板（ 10)於頂面向上設有複數組卡合構造（13)，各組卡 合構造（1 3 )包括兩對稱之l倒勾形承接架（1 4 )及 兩對稱的導滑塊（1 5 )，各組卡合構造（丄3 )的兩承 φ 接架（1 4 )與兩導滑塊（1 5 )係相互間隔，且兩承接 采（1 4 )的開口朝外，而兩導滑塊（1 5 )於相對面較 遠離各承接架（1 4 )的下側形成一道凹口，兩承接架（ 1 4)之間及各導滑（1 5 )架且各與導光橋板（1 〇 ) 頂面之間形成一長形的承接槽（1 4 1 )及一導滑槽（1 5 1)。 薄膜電路板（2 0 )係導通按鍵訊號的長方形片狀薄 膜電路板結構’並設有複數個導通按鍵訊號的壓點（2 1 各壓點（2 1 )係對應各組卡合構造（1 3 )的位置 M279929 而。又薄膜電路板（2 〇 )係貼設於該導光橋板（1 〇 ) 的頂面，薄膜電路板（2 0 )上對應各組[形承接架（工 4 )及導滑塊（1 5 )並所形成的承接槽（】4丄）及導 滑槽（1 5 1 )設有複數個鏤空孔（2 2 )，藉此使各二 幵y承接木（1 4 )及導滑塊（1 5 )朝上伸出薄膜電路板 (20)，亦使各承接槽（141)及導滑槽（151) 露出薄膜電路板（2 0 )外。 橡膠壓鈕片（3 0 )係透明的橡膠軟板，其係貼設於 薄膜電路（2 0 )的頂面，並對應各薄膜電路板（2 〇 ) 的各壓點（2 1 )朝上一體伸設有複數個鍵環（3 i )， 橡膠壓鈕片（30)並對應薄膜電路板（2〇)的各鏤空 孔（2 2 )設有複數個鏤空孔（3 2 )，藉此使各L形承 接架（1 4 )及導滑塊（1 5 )朝上伸出橡膠壓鈕片（3 0)，並且使各承接槽（141)及導滑槽（151)露 出橡膠壓鈕片（30)外。 架橋（40)係包括一第一框架（4 1)及一第二框 架（42)，並以第一框架（41)及第二框架（42) 交叉軸樞成剪形旋動結構，其中第一框架（4 1 )頂緣的 兩側設有兩滑軸（4 1 1 )，而第二框架（4 2 )的頂緣 係形成一對應樞軸（4 2 1 )，第二框架（4 2 )的底緣 兩側设有兩/骨軸（4 2 2 )，並由上而下依序穿過橡膠壓 鈕片（30)及溥膜電路板（20)的鏤空孔（32)( 2 2 )，以可滑動型態容設於導光橋板（丄〇 )的導滑槽 (1 5 1)内，並且第一框架（4 1)的底緣形成一對應 M279929 樞軸（412)，並由上而下依序穿過橡膠壓鈕片（3〇 )及薄膜電路板（2 0 )的鏤空孔（3 2 ) ( 2 2 )，以 可轉動型態樞設於導光橋板（1 〇 )同一卡合構造（丄3 )的承接槽（1 4 1 )内。 鍵帽（5 0 )係概呈方形的透光壓按元件，各鍵帽（ 5 0)於底面上一體成型有兩對稱之樞接槽i )及兩 導滑槽（5 2)，並於底面的中央一體成型向下凸設有一 φ 壓按定位部（5 3 )，以壓按定位部（5 3 )定位接觸橡 膠壓紐片（30)的各鍵環（31)頂端，各鍵帽（5〇 )的兩導滑槽（5 2 )並將各第一框架（4 1 )的兩滑軸 (4 1 1 )滑動樞設於其中，而兩樞接槽（5 i )將同個 木橋（40)其弟一框架（42)的槐轴（42 1)以可 轉動型態樞設於其中，藉此，各鍵帽（5 〇 )樞接於各架 橋（4 ◦)的頂緣。 一發光體定位片（6 〇 )，發光體定位片（6 〇 )係 _ 聚酯膜的片體並貼設於導光橋板（6 0)的底面，其上並 設有四個以撓性電路板相連接的發光元件（6丄），在本 較佳實施例中發光元件係L E D，各發光元件（6 i )並 分別容置於導光橋板（丄〇 )的容孔（丄2 )内。 一底板（7 0 )’底板（7 0 )係金屬板件並設於發 光定位片（6 〇 )的底部，藉此加強本創作整體的結構強 度，此外，本較佳實施例也可不設有底板（7 〇 )而使用 ’本創作在此不加以限制。 凊參看第四圖的第二較佳實施例，其係改良第一較佳 11 M279929 實施例中有關發光元件（6 1 )的設置位置，其未設有發 光體定位片（6 0 )，而於薄膜電路板（2 〇 )的底面對 應導光橋板（1 〇 )的各容孔（1 2 )設有四個以撓性電 路板相連接的發光元件（6 1 )，各發光元件（6 1 )並 容設於各容孔（1 2 )内，而第二較佳實施例其他的部分 設置與第一較佳實施離例中的相同，故在此不加以贅述； 並且弟一較佳貫施例也可不設有底板（7 〇 )而使用，本 創作在此不加以限制。 本創作的發光元件另有他種設置的方式，請參看第五 圖的第二較佳實施例，其係改良第一較佳實施例中有關發 光凡件（6 1 )的設置位置，其未設有發光體定位片（6 〇 )，並於底板（7 〇 )頂面對應導光橋板（；[〇 )的各 合孔（1 2 )設有四個以撓性電路板相連接的發光元件（ 61)，各發光元件（61)並容設於各容孔（12)内 〇 此外，本創作各較佳實施例中發光元件（6 1 )及所 、子應的谷A ( 1 2 )之數量也可做其他數量的設置，隨使 用的需要增減，本創作在此不加以限制。 【圖式簡單說明】 第一圖ir、本創作第一較佳實施例之側視剖面示意圖。 2=圖係本創作第—較佳實施例之部分立體分解圖。 =-圖係本創作第—較佳實施例之部分立體分解圖。 /圖係本創作第二較佳實施例之側視剖面示意圖。 Θ τ本到作第二較佳實施例之側視剖面示意圖。 12 M279929 第六圖係既有背光鍵盤之部分立體分解圖。 【主要元件符號說明】 (1 〇)導光橋板 (1 2 )容孔 (1 4 )承接架 (15)導滑塊 (2 0 )薄膜電路板 (2 2 )鏤空孔 (31)鍵環 (4 0 )架橋 (411)滑軸 (4 2 )第二框架 (4 2 2 )滑軸 (5 1 )樞接槽 (5 3 )壓按定位部 (6 1 )發光元件 (8 0 )組裝基板 (8 2 )導滑架 (8 3 1 )壓點 (8 4 1 )鍵環 (8 5 1 )導光反射區 (8 6 1 )發光元件 (1 1 )導光反射區 (1 3 )卡合構造 (141)承接槽 (151)導滑槽 (2 1 )壓點 (3 0 )橡膠壓鈕片 (3 2 )鏤空孔 (4 1 )第一框架 (4 1 2 )樞軸 (4 2 1 )樞軸 (5 0 )鍵帽 (5 2 )導滑槽 (6 0)發光體定位片 (7 0 )底板 (8 1 )承接架 (8 3 )薄膜電路板 (8 4 )橡膠壓鈕片 (8 5 )導光板 (8 6 )發光體定位片 (8 7 )底板 13And compared with the existing backlit keyboard, the light guide bridge system of the hinge bridge and keycap is made in this body, eliminating the assembly substrate made of metal stamping, which effectively reduces the overall volume, except that it can be pivoted and engaged. Outside the bridge, it also has the function of light guide, and its integrated structure has the following effects: 1: the assembly is not easy to deform: because the shape of the light guide bridge plate will not be permanently deformed by bending, so It will not be deformed by external force during assembly. 2. The stability of production and transportation is high: because the light-guiding bridge plate does not have Μ㈣ ^ ′, it is stable when assembled as a whole, and there is no external force applied during transportation k, and it will not deform. When Shao Fei is working, there will be no insensitivity of the key cap to trigger the pressure point. • Due to the pivoting and coupling of the pilot bridge, the engaging structure is not easy to deform, because 8 M279929 will not have the assembled rear bridge structure. The skewed condition makes the pressing of the pressing cap very sensitive. [Embodiment] This creation is a backlit keyboard. Please refer to the first comparison example of the first to third figures, which includes a light guide bridge board (10), a thin film circuit board (20), and a rubber. Pressing button (30), a plurality of bridges (40), a plurality of keycaps (50), a luminous body positioning piece (60), and a bottom plate (70); of which, the light guide bridge plate (1 0) is a generally rectangular light-transmitting plate body, which is provided with a light-guiding reflection area (分散) at a plurality of positions at the bottom, a light-guiding bridge plate (1 0) and four accommodating holes in the central part. (1 2), the four accommodation holes (1 2) are arranged in a rectangular manner at intervals; the light guide bridge plate (10) is provided with a complex array engaging structure (13) on the top surface, and each group engaging structure (1 3) includes two symmetrical l-shaped hook-shaped receiving frames (1 4) and two symmetrical guide sliders (1 5), two bearing φ receiving frames (1 4) of each group of engaging structures (丄 3), and The two guide sliders (1 5) are spaced apart from each other, and the openings of the two bearing blocks (1 4) face outward, and the two guide sliders (1 5) are formed on the opposite side farther away from the lower sides of the receiving frames (1 4). One notch, two bearing A long receiving groove (1 4 1) and a guide sliding groove (1) are formed between the frames (1 4) and between each guide slide (1 5) and each and the top surface of the light guide bridge plate (10). 5 1). The thin-film circuit board (20) is a rectangular sheet-shaped thin-film circuit board structure that conducts the key signal, and is provided with a plurality of pressure points (2 1 each pressure point (2 1)) corresponding to each group of engaging structures (1 3) position M279929. And the thin-film circuit board (20) is attached to the top surface of the light-guiding bridge board (10), and the thin-film circuit board (20) corresponds to each group [shaped receiving frame (tool 4) ) And the guide block (1 5) and the receiving groove (] 4 丄) and the guide groove (1 5 1) formed with a plurality of hollow holes (2 2), so that each two 幵 y receiving wood ( 1 4) and the guide slider (1 5) protrude upward from the film circuit board (20), so that each receiving groove (141) and the guide slide groove (151) are exposed outside the film circuit board (2 0). Rubber pressing button The sheet (30) is a transparent soft rubber board, which is attached to the top surface of the thin-film circuit (20), and is integrally extended upwards corresponding to each pressure point (21) of each thin-film circuit board (20). There are a plurality of key rings (3 i), rubber button pieces (30) and corresponding hollow holes (2 2) of the thin-film circuit board (20), a plurality of hollow holes (3 2) are provided, so that each L Support (1 4) and guide The block (1 5) protrudes upwards from the rubber button (30), and exposes each receiving groove (141) and the guide groove (151) to the rubber button (30). The bridge (40) includes a The first frame (41) and a second frame (42) are pivoted to form a scissors-shaped rotating structure with the first frame (41) and the second frame (42) intersecting the shaft. The top of the first frame (41) There are two sliding shafts (4 1 1) on both sides of the edge, and the top edge of the second frame (4 2) forms a corresponding pivot (4 2 1), and both sides of the bottom edge of the second frame (4 2) There are two / bone shafts (4 2 2), and they pass through the rubber button (30) and the hollow hole (32) (2 2) of the diaphragm circuit board (20) in order from top to bottom so as to be slidable. The shape is accommodated in the guide groove (1 5 1) of the light guide bridge plate (丄 〇), and the bottom edge of the first frame (4 1) forms a corresponding M279929 pivot (412), and it is from top to bottom Pass through the rubber button (30) and the hollow hole (3 2) (2 2) of the thin-film circuit board (2) in sequence, and pivotally set on the same card of the light guide bridge (10) in a rotatable manner. Inside the receiving groove (1 4 1) of the composite structure (丄 3). The keycap (50) is a square light-transmitting press Each keycap (50) is integrally formed with two symmetrical pivot joint grooves (i) and two guide sliding grooves (52) on the bottom surface, and is integrally formed at the center of the bottom surface with a φ press-down positioning portion protruding downward. (5 3), press the positioning part (5 3) to locate the top of each key ring (31) contacting the rubber button piece (30), the two guide chutes (5 2) of each key cap (50), and The two sliding shafts (4 1 1) of each first frame (4 1) are slidably pivoted therein, and the two pivot joint grooves (5 i) will be the same as the wooden bridge (40) and its younger frame (42). 42 1) It is pivotally arranged in a rotatable manner, whereby each keycap (50) is pivotally connected to the top edge of each bridge (4). A luminous body positioning sheet (60), a luminous body positioning sheet (60) is a sheet body of a polyester film, and is attached to the bottom surface of the light guide bridge plate (60), and there are four The light-emitting element (6 丄) connected to the flexible circuit board, in the preferred embodiment, the light-emitting element is an LED, and each light-emitting element (6i) is respectively accommodated in the receiving hole (丄) of the light-guiding bridge board (丄 〇). 2) Within. A bottom plate (70) 'bottom plate (70) is a metal plate and is set at the bottom of the light-emitting positioning piece (60), thereby enhancing the overall structural strength of the creation. In addition, this preferred embodiment may not be provided. Base plate (70) and the use of 'this creation is not limited here.凊 Refer to the second preferred embodiment of the fourth figure, which is a modification of the position of the light emitting element (6 1) in the first preferred 11 M279929 embodiment, which is not provided with a luminous body positioning sheet (60). On the bottom surface of the thin-film circuit board (20) corresponding to each accommodation hole (12) of the light-guiding bridge board (10), four light-emitting elements (6 1) connected by a flexible circuit board are provided, and each light-emitting element ( 6 1) and is accommodated in each of the accommodation holes (1 2), and the other parts of the second preferred embodiment are the same as those in the first preferred embodiment, so they will not be described here. The Jiaguan embodiment can also be used without a base plate (70), which is not limited in this creation. There are other ways to arrange the light-emitting element of this creation. Please refer to the second preferred embodiment of the fifth figure, which is a modification of the position of the light-emitting element (6 1) in the first preferred embodiment. A luminous body positioning sheet (60) is provided, and four coupling holes (1 2) connected to the flexible circuit board on the top surface of the bottom plate (70) corresponding to the light guide bridge plate (; 2) are provided. Light-emitting element (61), each light-emitting element (61) is housed in each receptacle (12). In addition, the light-emitting element (6 1) and the corresponding valley A (1 2) The quantity can also be set in other quantities. It can be increased or decreased according to the needs of use. This creation is not limited here. [Brief description of the drawings] The first figure ir is a schematic side sectional view of the first preferred embodiment of the present invention. 2 = The figure is a partially exploded view of the first-preferred embodiment of this creation. =-The figure is a partial exploded view of the first preferred embodiment of this creation. / Picture is a schematic side sectional view of the second preferred embodiment of this creation. Θ τ is a schematic side sectional view of the second preferred embodiment. 12 M279929 The sixth picture is a partial exploded view of an existing backlit keyboard. [Description of main component symbols] (1 〇) Light guide bridge board (1 2) Capacitor hole (1 4) Receiving frame (15) Guide slider (2 0) Thin film circuit board (2 2) Hollow hole (31) (4 0) bridge (411) sliding shaft (4 2) second frame (4 2 2) sliding shaft (5 1) pivot joint groove (5 3) press the positioning part (6 1) light emitting element (80) assembly Base plate (8 2) guide carriage (8 3 1) pressure point (8 4 1) key ring (8 5 1) light guide reflection area (8 6 1) light emitting element (1 1) light guide reflection area (1 3) Engaging structure (141) receiving groove (151) guide groove (2 1) pressure point (3 0) rubber button piece (3 2) hollow hole (4 1) first frame (4 1 2) pivot shaft (4 2 1) Pivot (5 0) Keycap (5 2) Guide slot (6 0) Luminous body positioning piece (7 0) Base plate (8 1) Receiving frame (8 3) Film circuit board (8 4) Rubber pressure Button piece (8 5) Light guide plate (8 6) Luminous body positioning piece (8 7) Base plate 13