1277807 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種應用於液晶顯示裝置之燈管夾持裝置，及使用其 之直下式背光模組。 【先前技術】 由於液晶顯示器面板之液晶本身不具發光特性，因而，爲達到顯 示效果，需給液晶顯示器面板提供一面光源裝置，如背光模組，其作 用在於向液晶顯示器面板供應亮度充分並且分佈均勻之面光源。背光 权組包括月光源及光學元件如導光板等。依背光源之位置不同，背光 模組一般可分爲側光式及直下式兩種。 請參閱第一圖，先前技術之直下式背光模組10包括一框架n， 該框架11包括一平整底面Π2及一端與該底面112相連之複數側面 114，該複數側面114之另一端形成一開口，一設置於該框架n開口 處之擴散板13，一設置於該底面Π2上之反射板12，以及複數設置 於該框架11内並排布於該擴散板13下方之冷陰極螢光燈管π。該冷 陰極螢光燈管15發射之光束經過擴散板13擴散後變爲平面光束。 惟，大尺寸之背光模組中，因爲冷陰極螢光燈管長度較長，導致 在振動狀恶下冷陰極螢光燈管之變形量較大，從而容易斷裂。大尺寸 之月光模組中，擴散板之尺寸也會加大，並會具有較重之重量，擴散 板若仍然僅由㈣之繼讀，則其增加之重量會敎擴散板中央之 部分向下凹陷，從而容易發生翹曲變形。 爲I解決上述問題，先前技術中一般採用於擴散板及反射板之間 設置燈管夾持裝置之方式以夾持冷陰極螢光燈管及抑制擴散板發生 翹曲變形。 ” 清-併參閱第二圖及第三圖，先前技術揭露一種背光模組3〇。該 背光模，30包括-框_、一反射板32、一擴散板33、複數冷陰極 螢光燈管35及複數燈管夾持裝置2〇。該複數燈管夹持裝置設置在 反射板32及擴散板33之間。該燈管夾持裝置2〇包括一 設置於該平錢上表·之支雜24，_設=^2= 1277807 面並分別位於該支撐柱24兩側之夾具26，以及設在該平板22下表面 之兩個卡扣28。其中，該支撐柱24用於支撐擴散板33，該兩夹具26 • 用於固定兩冷陰極螢光燈管35，該兩個卡扣28可相應扣入反射板32 _ 及框架31底面相應之開口（未標示），用於固定該燈管夾持裝置20。 惟’上述燈管夾持裝置20僅能適用於採用平面之反射板32之背 光模組30，而採用平面反射板32之背光模組30之出光均勻性較差。 有鑒於此’提供一種能提高出光均勻性之燈管夾持裝置及使用其 之背光模組實爲必要。 【發明内容】 ® 下面將以實施例說明一種能提高出光均勻性之燈管夾持裝置及 使用其之背光模組。 一種燈官夾持裝置包括一固定板，至少一支撐柱及至少一夾具， 該固定板包括至少一橋部及至少一平板部，且該橋部包括一橋頂及自 該橋頂延伸之兩曲狀侧壁，該曲狀側壁與該至少一平板部相連，該至 少一支撐柱設置於該橋頂；該至少一夾具設置於該至少一平板部。 一種背光模組，其包括一框架，該框架包括一底面及一端與該底 、 面相連之複數側面，該複數側面之另一端形成一開口；一設置於該框 架開口處之擴散板；複數設置於該框架内並排布于該擴散板下方之燈 φ 管；一設置於該框架底面上之反射板，該反射板具有複數凸起，且相 鄰兩凸起與該反射板底面形成一朝向該燈管之曲面；及至少一設置在 該反射板及該擴散板之間之燈管夾持裝置。該燈管夾持裝置包括一固 定板，至少一支撐柱及至少一夾具。該固定板包括至少一與該反射板 凸起相配合設置之橋部及至少一平板部，且該橋部包括一橋頂及自該 橋頂延伸之兩曲狀側壁，該曲狀側壁與該至少一平板部相連。該至少 一支撐柱設置於該橋頂並頂觸該擴散板；該至少一夾具設置於該平板 部並夾緊該燈管。 與先前技術相比較，該燈管夹持裝置由於具有橋狀結構之固定 板，其可固定於具有凸起結構之反射板。該背光模組由於其反射板相 鄰之凸起與反射板底面形成一朝向相應燈管之反射曲面，所以該燈管 6 •1277807 背光模财制更多之反射光束，制提高整個 iiiit 2 f且，驗侧繼之__向相應 I戶L iH、同樣可起到反射光束提高出光均勻性之作用。综 斤述4光她及_管夹持裝置同時具有提高出光均勻性之優 【實施方式】 ’採用該燈管 下面將結合附圖及實施例對本發明之燈管夹持裝置 夾持裝置之背光模組作進一步之詳細說明。1277807 IX. Description of the Invention: [Technical Field] The present invention relates to a lamp tube holding device applied to a liquid crystal display device, and a direct type backlight module using the same. [Prior Art] Since the liquid crystal of the liquid crystal display panel itself does not have the illuminating property, in order to achieve the display effect, the liquid crystal display panel needs to provide a light source device, such as a backlight module, which functions to supply the liquid crystal display panel with sufficient brightness and uniform distribution. Surface light source. The backlight group includes a moon light source and optical components such as a light guide plate. Depending on the position of the backlight, the backlight module can be generally divided into two types: side light type and direct type. Referring to the first figure, the prior art direct type backlight module 10 includes a frame n. The frame 11 includes a flat bottom surface 2 and a plurality of sides 114 connected to the bottom surface 112 at one end. The other end of the plurality of sides 114 forms an opening. a diffusing plate 13 disposed at the opening of the frame n, a reflecting plate 12 disposed on the bottom surface 2, and a plurality of cold cathode fluorescent tubes disposed in the frame 11 and disposed under the diffusing plate 13 . The light beam emitted from the cold cathode fluorescent lamp 15 is diffused by the diffusion plate 13 to become a planar light beam. However, in a large-sized backlight module, since the cold cathode fluorescent lamp has a long length, the cold cathode fluorescent lamp has a large deformation amount under vibration, and is easily broken. In the large-size moonlight module, the size of the diffuser plate will also increase, and it will have a heavier weight. If the diffuser plate is still only read by (4), the added weight will be the lower part of the diffuser plate. The depression is so as to easily cause warping deformation. In order to solve the above problem, in the prior art, a lamp holding device is generally disposed between the diffusing plate and the reflecting plate to sandwich the cold cathode fluorescent lamp and suppress the warping deformation of the diffusing plate. Clear - and referring to the second and third figures, the prior art discloses a backlight module 3A. The backlight module 30 includes a frame, a reflector 32, a diffuser 33, and a plurality of cold cathode fluorescent tubes. 35 and a plurality of lamp tube clamping devices 2 . The plurality of lamp tube clamping devices are disposed between the reflecting plate 32 and the diffusing plate 33. The lamp tube holding device 2 includes a branch disposed on the flat money Miscellaneous 24, _ set = ^ 2 = 1277807 face and respectively located on both sides of the support column 24 clamp 26, and two buckles 28 provided on the lower surface of the plate 22, wherein the support column 24 is used to support the diffusion plate 33. The two clamps 26 are used for fixing two cold cathode fluorescent lamps 35, and the two buckles 28 can be respectively buckled into the reflector 32_ and corresponding openings (not labeled) on the bottom surface of the frame 31 for fixing the lamp. The tube clamping device 20. However, the above-mentioned lamp tube clamping device 20 can only be applied to the backlight module 30 using the planar reflecting plate 32, and the backlight module 30 using the planar reflecting plate 32 has poor light uniformity. This provides a lamp tube clamping device that can improve the uniformity of light emission and a backlight module using the same SUMMARY OF THE INVENTION The following is a description of a lamp tube clamping device capable of improving light uniformity and a backlight module using the same. A lamp holder clamping device includes a fixing plate, at least one supporting column and at least a fixture, the fixing plate includes at least one bridge portion and at least one flat portion, and the bridge portion includes a bridge top and two curved side walls extending from the top of the bridge, the curved side wall being connected to the at least one flat portion, the at least a support post is disposed on the top of the bridge; the at least one clamp is disposed on the at least one flat portion. A backlight module includes a frame, the frame includes a bottom surface and a plurality of sides connected to the bottom and the surface at one end, the plurality The other end of the side surface forms an opening; a diffusing plate disposed at the opening of the frame; a plurality of lamps φ disposed in the frame and arranged under the diffusing plate; and a reflecting plate disposed on the bottom surface of the frame, the reflecting The plate has a plurality of protrusions, and the adjacent two protrusions form a curved surface facing the lamp tube with the bottom surface of the reflector; and at least one tube clamp disposed between the reflection plate and the diffusion plate The lamp tube clamping device comprises a fixing plate, at least one supporting column and at least one jig. The fixing plate comprises at least one bridge portion and at least one flat plate portion matched with the reflecting plate protrusion, and the bridge portion The utility model comprises a bridge top and two curved side walls extending from the top of the bridge, the curved side wall being connected to the at least one flat portion. The at least one supporting column is disposed on the top of the bridge and contacting the diffusing plate; the at least one clamp is disposed on the The flat plate portion clamps the lamp tube. Compared with the prior art, the lamp tube holding device can be fixed to a reflecting plate having a convex structure due to a fixing plate having a bridge structure. The protrusions adjacent to the plate and the bottom surface of the reflector form a reflective curved surface facing the corresponding lamp tube, so the lamp 6 • 1277807 backlight module is more reflective beam, and the whole iiiit 2 f is improved, and the inspection side is followed by _ _ to the corresponding I household L iH, can also play the role of reflecting light beam to improve the uniformity of light. The invention also has the advantages of improving the uniformity of light emission. [Embodiment] The backlight of the lamp holding device clamping device of the present invention will be described below with reference to the accompanying drawings and embodiments. The module is further detailed.
明併參閱第四圖及第五圖，本發明燈管夾持裝置較佳實施例 一。駿管鱗裝置40包括-固定板42，—支撐柱44及兩夹具46。 該固疋板42包括-橋部421及兩平板部似，且該橋部421包括一橋 頂423及自該橋頂423延伸之兩曲狀側壁424，該兩曲狀側壁似= 橋頂423兩端相連接形成一拱形通道49。該兩曲狀側壁424分別盘^ 兩平板部427相連接。該支擇柱44設置於該橋頂奶。該兩夹且、46 分別設置於該兩平板部427上表面。該兩夾具46爲開口端向上之c 型結構。該兩曲狀側壁424之曲面分別朝向相鄰之該兩夾具佔。 本實施例之燈管夾持裝置40還可包括兩卡扣48，其分別連接於 該兩平板部427下表面。該兩卡扣48可用于將燈管夾持裝置4〇固定 於背光模組中之反射板及框架底面。 本實施例之燈管紐裝置40可優猶明樹脂材料製成。本實施 例之燈管夹持裝置40還可於該兩平板部427上表面及該兩曲狀側壁 424表面形成一全反射層。 請參閱第六圖，本發明燈管夾持裝置之較佳實施例二。該燈管夹 持裝置60包括-固定板62，兩支撐柱64及三夾具66。該固定板犯 包括兩橋部621及三平板部627，其中，三平板部627分別隔開兩橋 部62卜每個橋部621包括一橋頂623及自該橋頂623延伸之兩曲狀 側壁624，該兩曲狀锻624與橋頂623兩端相連接形成一拱形通道 69。該兩曲狀側壁624分別與相鄰該兩平板部6274目賴。該兩支擇 板64设置於該兩橋頂623。該三炎具66分別設置於該三平板部627 7 1277807 之上表面。 可以理解，本發明之夹具也可採用開口端向上之ϋ型結構。本發 明之燈管夾持裝置可採用上述較佳實施例一及（或）二之複數燈管夾 持裝置單元串接形成之具有多支撐柱及多夾具之燈管夾持裝置。可以 理解，本發明之燈管夹持裝置可用於夾持複數燈管。另外，本發明之 燈盲夾持裝置還可採用只有一支擇柱、一橋部及一平板部之設計，該 平板部連接該橋部其巾之—曲㈣壁，以及該S撐柱設於該橋部之橋 頂’此設計同樣能達到本發明之技術效果。 請參閱第七圖，本發明較佳實施例三提供一種背光模組7〇，其包 括一框架71，該框架71包括一底面712及一端與該底面相連之複數 侧面714，該複數側面714之另一端形成一開口； 一設置於該框架71 開口處之擴散板73 ;複數設置於該框架71内並排布於該擴散板下 方之燈管75 ; —設置於該框架71底面上之反射板％，和複數設置在 該反射板76和該擴散板73之間之燈管夾持裝置8〇。該反射板76具 有複數凸起762 ’該凸起762爲長條狀，其長度方向平行于該燈管75。 該凸起762具有兩曲狀侧面763，且相鄰兩凸起762與該反射板邗底 面形成一朝向相應燈管75之曲面。 該燈管夹持裝置80包括一固定板82，一支撐柱84及兩夾具86。 該固定板82包括一橋部821及兩平板部827,且該橋部821包括一橋 頂823及自該橋頂823延伸之兩曲狀側壁824，該兩曲狀侧壁824與 橋頂823 _相連接形成-拱形通道(未標示）。該拱形通道與該反射 板76之凸起762相互配合，使得該燈管夾持裝置8〇能設置於該反射 板76之凸起762上方。該支撐柱84設置於該橋頂823，用於頂觸該 擴散板73。該兩夾具86分別設置於該兩平板部827上表面，用於夾 緊該複數燈管75。該兩曲狀側壁似之曲面分別朝向相鄰之該兩爽具 86。該反射板76之相鄰凸起762之間之距離大於或等於該燈管炎持 裝置80之單個平板部827之長度尺寸。本實施例之燈管選用冷陰 極螢光燈管。 本實施例之燈管夾持裝置80採用扣合方式固定於該反射板76 ·· 8 Ι2778Ό7 於複數平板部827下表面設置複數卡扣88 :該反射板76及框架底面 712相應位置5又有複數開口 765，該複數卡扣88可相應扣入該複數開 Z 765。可以理解，本發明也可採用貼合方式或螺絲鎖緊方式進行固 疋·如貼合方式，可直接使用粘合劑將固定板之下表面貼合於反射 板；如螺絲鎖緊方式，可于平板部下表面設置複數圓柱，腿射板及 框架底面減位置設有複_口，最麟職數_於轉底面外部 與該複數圓柱進行鎖緊。 由於該反射板76相鄰之兩凸起762與該反射板76之底面形成一 朝向相應燈管75之反射曲面，所以該燈管75對應擴散板73之相應 位置之厢可制更多之反射光束，從而提高·背細組7〇之出 光均勻性。而且，本實施例之燈管夾持裝置8〇之曲狀側壁犯4 具有該功能。 、本實施例之燈管乃可選冷陰極螢光燈管。本實施之背光模組7〇 還可包括複數側®反射板，其一端分別與該反射板76之侧邊相連接， 另-端與框架71之側面714相連接。另外，本實施例之f光模组7〇 還可包括複數光學膜片（圖未示），如棱鏡片、偏光片等，依次設置在 該擴散片73表面上，以進-步提高背光模組之出光均勻性。 本發明之燈管夾持裝置由於具有橋狀結構之固定板，其可固定於 具有^起結狀反射板，同時具有夾緊燈管及支撐擴散板以抑制麵曲 之功能。該背細組由於其反射板補之凸起與反射板底面形成一朝 =相應燈管之反射曲面，所以該燈管對應擴散板之相應位置之周圍可 得到更多之反射光束，從而提高整個背光模組之出光均勻性。而且， 該燈言夾持裝置之橋部設有朝向相應燈管之曲狀側壁，其同樣可起到 反射光束提高出光均雜之個。综上所述，該f光模組及其燈管夹 持裝置同時具有夹緊燈管、抑制擴散板輕曲以及提高丨光均句性之優 點。 ^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 明。惟，以上所述者僅為本發明之較佳實施例，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 9 1277807 之申請專利範圍内。 【圖式簡單說明】 第一圖係先前技術背光模組之截面示意圖。 第二圖係先前技術採用示燈管夾持裝置之背光模組截面示意圖 第三圖係第二圖之燈管夾持裝置立體結構示意圖。 ，四圖係本發明燈管夾持裝置較佳實施例一之立體結構示意圖 第五圖係第四圖之燈管夾持裝置之主視圖。 ，六圖係本發明燈管夾持裝置較佳實施例二之主視圖。 々圖係本發明为光板虹較佳實施例之截面示意圖。 【主要元件符號說明】 燈管夾持裝置 固定板 支撐柱 爽具 卡扣 接形通道 橋部 橋頂 曲狀側壁 平板部 背光模組 樞架 擴散板 反射板 底面 側面 凸起 曲狀側面 開Ο 40、 42、 44、 46、 48、 49、 421 423 424 427 70 71 73 76 712 714 762 763 765 60、80 62、82 64、84 66、86 68、88 69 、62卜 821 、623 、 823 、624 、 824 、627 、 827Referring to Figures 4 and 5, a preferred embodiment of the lamp tube holding device of the present invention is shown. The tube scale device 40 includes a fixing plate 42, a support column 44 and two clamps 46. The fixing plate 42 includes a bridge portion 421 and two flat plate portions, and the bridge portion 421 includes a bridge top 423 and two curved side walls 424 extending from the bridge top 423. The two curved side walls are similar to the bridge top 423. The ends are joined to form an arched passage 49. The two curved side walls 424 are respectively connected to the two flat plate portions 427. The support column 44 is disposed on the bridge top milk. The two clips and 46 are respectively disposed on the upper surfaces of the two flat plate portions 427. The two clamps 46 are c-shaped structures with open ends upward. The curved surfaces of the two curved side walls 424 are respectively facing toward the adjacent two clamps. The lamp tube clamping device 40 of this embodiment may further include two buckles 48 connected to the lower surfaces of the two flat plate portions 427, respectively. The two snaps 48 can be used to fix the lamp holder 4 〇 to the reflector and the bottom surface of the frame in the backlight module. The lamp socket device 40 of the present embodiment can be made of a resin material. The lamp tube holding device 40 of the present embodiment can also form a total reflection layer on the upper surface of the two flat portions 427 and the surfaces of the two curved side walls 424. Referring to Figure 6, a preferred embodiment 2 of the lamp tube holding device of the present invention. The lamp tube holding device 60 includes a fixing plate 62, two support columns 64 and three clamps 66. The fixing plate comprises two bridge portions 621 and three flat plate portions 627. The three flat plate portions 627 are respectively separated by two bridge portions 62. Each of the bridge portions 621 includes a bridge top 623 and two curved side walls extending from the bridge top 623. 624. The two curved forgings 624 are coupled to both ends of the bridge top 623 to form an arched passage 69. The two curved side walls 624 are respectively adjacent to the two flat portions 6274. The two selection plates 64 are disposed on the two bridge tops 623. The tri-inflammation devices 66 are respectively disposed on the upper surface of the three flat plate portions 627 7 1277807. It will be appreciated that the clamp of the present invention may also employ an open-ended, upwardly-shaped configuration. The lamp tube clamping device of the present invention can adopt the lamp tube clamping device with multiple support columns and multiple clamps formed by serially connecting the plurality of lamp tube clamping device units of the first embodiment and/or the second embodiment. It will be appreciated that the lamp tube holding device of the present invention can be used to hold a plurality of lamps. In addition, the lamp blind clamping device of the present invention can also adopt a design having only one selected column, a bridge portion and a flat plate portion, the flat plate portion connecting the bridge-the curved (four) wall of the bridge portion, and the S-pillar column is disposed on the The bridge top of the bridge can also achieve the technical effect of the present invention. Referring to the seventh embodiment, a third embodiment of the present invention provides a backlight module 7A, which includes a frame 71. The frame 71 includes a bottom surface 712 and a plurality of side surfaces 714 connected to the bottom surface. The plurality of side surfaces 714 The other end forms an opening; a diffusing plate 73 disposed at the opening of the frame 71; a plurality of lamps 75 disposed in the frame 71 and disposed under the diffusing plate; - a reflecting plate disposed on the bottom surface of the frame 71 And a plurality of tube holding devices 8 disposed between the reflecting plate 76 and the diffusing plate 73. The reflecting plate 76 has a plurality of projections 762' which are elongated and whose longitudinal direction is parallel to the tube 75. The protrusion 762 has two curved sides 763, and the adjacent protrusions 762 and the bottom surface of the reflector plate form a curved surface facing the corresponding lamp tube 75. The tube clamping device 80 includes a fixing plate 82, a support post 84 and two clamps 86. The fixing plate 82 includes a bridge portion 821 and two flat plate portions 827, and the bridge portion 821 includes a bridge top 823 and two curved side walls 824 extending from the bridge top 823. The two curved side walls 824 and the bridge top 823 The connection forms an arched channel (not shown). The arcuate channel cooperates with the projection 762 of the reflector 76 such that the lamp holder 8 can be disposed above the projection 762 of the reflector 76. The support post 84 is disposed on the bridge top 823 for contacting the diffuser plate 73. The two clamps 86 are respectively disposed on the upper surfaces of the two flat portions 827 for clamping the plurality of lamps 75. The two curved side walls resemble curved surfaces toward the adjacent two cool members 86, respectively. The distance between adjacent projections 762 of the reflector 76 is greater than or equal to the length dimension of the single flat portion 827 of the tube holder 80. The lamp of this embodiment uses a cold cathode fluorescent tube. The lamp tube clamping device 80 of the embodiment is fixed to the reflecting plate 76 by a snapping manner. · 8 Ό 2778 Ό 7 The plurality of buckles 88 are disposed on the lower surface of the plurality of flat plate portions 827: the reflecting plate 76 and the bottom surface 712 of the frame have corresponding positions 5 A plurality of openings 765, the plurality of snaps 88 can be snapped into the plurality of open Z 765. It can be understood that the present invention can also be applied by a fitting method or a screw locking method, such as a fitting method, and the lower surface of the fixing plate can be directly attached to the reflecting plate by using an adhesive; for example, the screw locking method can be used. A plurality of cylinders are arranged on the lower surface of the flat plate portion, and the bottom surface of the leg and the bottom surface of the frame are provided with a complex _ mouth, and the most basic number _ is locked with the plurality of cylinders outside the rotating bottom surface. Since the two protrusions 762 adjacent to the reflecting plate 76 and the bottom surface of the reflecting plate 76 form a reflecting curved surface facing the corresponding lamp tube 75, the lamp tube 75 can be more reflected corresponding to the corresponding position of the diffusing plate 73. The light beam, thereby improving the uniformity of the light output of the thin group. Moreover, the curved side wall of the lamp holding device 8 of the present embodiment has this function. The lamp of the embodiment is an optional cold cathode fluorescent lamp. The backlight module 7A of the present embodiment may further include a plurality of side reflection plates, one end of which is respectively connected to the side of the reflection plate 76, and the other end is connected to the side 714 of the frame 71. In addition, the optical module 7A of the embodiment may further include a plurality of optical films (not shown), such as a prism sheet, a polarizer, etc., which are sequentially disposed on the surface of the diffusion sheet 73 to further improve the backlight mode. The light uniformity of the group. Since the lamp tube holding device of the present invention has a fixing plate having a bridge structure, it can be fixed to a structure having a knot-like reflecting plate, and has a function of clamping the lamp tube and supporting the diffusion plate to suppress the surface curvature. The back thin group forms a reflecting surface of the corresponding lamp tube with the convex surface of the reflecting plate and the bottom surface of the reflecting plate, so that the lamp tube can obtain more reflected light beams corresponding to the corresponding position of the diffusing plate, thereby improving the whole Light uniformity of the backlight module. Moreover, the bridge portion of the lamp holding device is provided with a curved side wall facing the corresponding lamp tube, which also serves to reflect the light beam to enhance the uniformity of the light. In summary, the f-light module and its lamp tube clamping device have the advantages of clamping the lamp tube, suppressing the smoothness of the diffuser plate, and improving the uniformity of the light. In summary, the present invention has indeed met the requirements of the invention patent and has filed a patent declaration in accordance with the law. However, 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 in the spirit of the present invention should be included in the following patent application. [Simple description of the drawings] The first figure is a schematic cross-sectional view of a prior art backlight module. The second figure is a schematic cross-sectional view of a backlight module using a lamp tube clamping device in the prior art. The third figure is a three-dimensional structure diagram of the lamp tube clamping device in the second figure. 4 is a perspective view of a preferred embodiment of a lamp tube holding device of the present invention. FIG. 5 is a front view of the lamp holding device of the fourth drawing. Figure 6 is a front elevational view of a preferred embodiment 2 of the lamp tube holding device of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS The present invention is a schematic cross-sectional view of a preferred embodiment of a light plate. [Main component symbol description] Lamp tube clamping device fixing plate support column Sleeve buckle connection channel bridge bridge top curved side panel flat part backlight module pivot diffusion plate reflection plate bottom side convex curved side opening 40 , 42, 44, 46, 48, 49, 421 423 424 427 70 71 73 76 712 714 762 763 765 60, 80 62, 82 64, 84 66, 86 68, 88 69 , 62 821 , 623 , 823 , 624 , 824, 627, 827