M351369 八、新型說明： 【新型所屬之技術領域】 本創作係關於一種背光模組，尤指一種防止因震動影 響其信賴性之背光模組。 v 5 【先前技術】 液晶顯示器等非自發性發光之顯示器需要設置—背 光模組以顯示晝面，然而，為了使顯示器具有良好的顯示 品位，提供至液晶顯示面板的光源必須儘可能為均勻的面 10光源。因此，在燈管與液晶顯示面板之間通常設置有多層 光學膜片，如：導光板或擴散片以調整從燈管發出之光源 的光學性質，從而使之接近均勻面光源。 一般來說，背光模組中通常設計有定位構件以使燈管 與光學膜片是穩定設置於其中。請參考圖丨，如圖中所示， 15在習知的背光模組1結構中，燈管12組裝於背光模組1之 後，且背光模組1組裝有側框14以保持燈管12之位置，並設 置有多個燈管支架15及間隙支柱16。透過燈管支架15將燈 管12支撐固定於背板丨丨上，間隙支柱16則將光學膜片（圖中 未示）支撑於其頂部以使得光學膜片（圖中未示）平整穩定 2〇的設置於燈管12上方。燈管丈架15及間隙支柱16的定位機 制是依靠其尾部所設置之扣合部（圖中未示）的結構及/或 螺絲鎖固以與背板11結合。 請參考圖2A，其為燈管支架之扣合部間隙示意圖，其 係以正視背板11反面之視角所繪示。從此方向來檢視燈管 5 M351369 支架15尾部的結構，前述之燈管支架15設計有一扣合部 ’背板11對應燈管支架15設計有一開孔111，扣合部151 被置入開孔111後經旋轉而組裝固定，組裝後如圖2A所 示° —般會將扣合部151的尺寸設計為比開孔111的尺寸稍 5 小而存在間隙△ X和△ y，以便利製造人員組裝，也可防止 扣合部151與開孔111之間因製造公差產生尺寸無法匹配相 容的狀況發生。 然而’當燈管與光學膜片若因震動或鎖固不良等原因 而晃動，就會影響顯示器的顯示品位和信賴性。請參考圖 10 2B’如圖中所示，若在燈管支架15的製造過程中因公差使 得扣合部151與開孔111之間的間隙△ y過大的話，在燈管支 架15組裝完成後，扣合部151與開孔111之間會發生旋轉定 位不良的情況。當此情況發生時，燈管支架丨5的位置容易 受到震動影響而改變’連帶地也改變燈管之設置位置。因 15此’造成設置此背光模組之顯示器的顯示品位及信賴性降 低。 另一方面’若扣合部151與開孔U1之間在Z軸上也因 製造公差存在間隙值的話，扣合部151甚至會因震動而從開 孔m十脫離，如此將影響顯示器的顯示品位及信賴性甚 2〇鉅。同時，間隙支柱16亦會產生上述的問題。然而，製造 公差是製作組件中不可避免的誤差，因此上述問題實是此 技術領域中亟待解決之問題。 【新型内容】 M351369 背光模組，俾能防止支 本創作之一目的係在提供一種 撐裝置脫離或鬆動之發生。 背光模組，俾能提昇 本創作之另一目的係在提供一種 其之信賴性。 :達成’本創作提供一種背光模組，包括： : 光源以及—支撑裝置。底板具有-較部，光 源设置於底板上，皮擔狀罢曰士 裝置具有—支撑件與—卡合件，直 具有一容置空間以容置光源，且卡合件是卡置於 10 固“中。同時，固定部具有一孔洞，卡合件具有一凸塊， 2塊與孔洞相互嵌合。上述支㈣置可為任意之形狀或 ’.、較佳為其支揮件為錐形柱體結構以供支揮—光學膜 片二或者支撐件更包含一容置弧槽，以供光源設置於其中： 且容置弧槽圍繞光源之部份周圍表面或全部周圍表面。 “此外’本創作另提供—種背光模組，包括：一底板、 光源以及S撲裝置。底板具有一固定部，光源設置於 底板上’而支樓裝置具有_支樓件、—容置弧槽與一卡合 ^其中，光源係設置於容置弧槽中，卡合件係卡置於固 疋P中同時，固定部具有一孔洞，卡合件具有一凸塊， 15 而凸塊與孔洞相互嵌合。 上述支撐件延伸一高度以維持其上之光學膜片之位 置’較佳為錐形柱體。此外，上述容置弧槽係圍繞該光源 之部份周圍表面或全部周圍表面。 上述底板可為任何形狀或樣式之底板，其所使用之製 作材料亦無限制，較佳為金屬材質。 20 M351369 本創作並無限制上述固定部之形狀或樣式，較佳為固 定部於底板之開口係為一矩形，同時，固定部具有一嵌合 壁，卡合件具有一側邊，且嵌合壁與側邊是相對應的。此 外’較佳為底板與彼合壁係為一體成形的。當將支推裝置 5卡置於固定部時，卡合件彈性變形至凸塊設置於孔洞後恢 復原狀。上述卡合件的外側寬度可設計成與固定部之寬度 相當或稍寬，以使得支撐裝置為緊配於固定部中，免除支 撐裴置與底板之間在燈管設置平面的某一方向上存在間隙 之可能性。 10 因此，本創作之支撐裝置與底板之間的間隙存在平面 與燈管設置平面不同，即使支撐裝置在間隙存在平面上旋 轉仍無法造成燈管位移或支撐裝置的鬆動脫離，從而達到 背光模組信賴性的提昇及支撐裝置脫離或鬆動的防止。 其次，對於上述孔洞之形狀或深度，本創作亦無限 15制，其可為圓孔、橢圓孔、多角形孔或半圓孔，較佳為圓 形孔。另一方面，本創作亦無限制上述凸塊之形狀，凸塊 之形狀較佳為對應孔洞之形狀如：圓柱體、橢圓柱體、多 角柱體或半圓柱體，更佳為圓柱體或橢圓柱體。因此，本 f作利用側邊的凸塊與嵌合壁的孔洞相互嵌合的設計，使 付本創作之背光模組不會因支標裝置與底板間的間隙造成 支揮裝置旋轉，而使得支撐裝置鬆動脫離於底板，進而達 到防止支撑裝置脫離或鬆動之發生，更增加背光模 賴性。 v. M351369 【實施方式】 實施例一 圖3顯示本創作第一較佳實施例之背光模組分解圖。 如圖中所示’背光模組3包括一底板31、一光源32及一支推 5裝置33。支撑裝置33及光源32皆是設置在底板31上。 底板31上形成有一固定部311 ’固定部3 11兩側分別形 成有一嵌合壁3 12’嵌合壁3 12上則形成有一孔洞3 13，且底 板31與般合壁3 12係為一體成形。在本實施例中，固定部3 11 於底板3 1之開口 3 111為矩形，且底板3 1與嵌合壁3 12係一體 10成型製作，而孔洞313則是以沖壓工藝製作的圓孔。然而， 在本創作的其他實施例中，亦可使用其他方式製作上述元 件。 如圖3所示，支撐裝置33具有一支撐件331與一卡合件 333’且卡合件333位於支撲件331之一端。此外，卡合件333 I5具有一側邊335’其並於各側邊335上分別形成一凸塊334。 凸塊334的形狀是對應於上述底板31上的孔洞313，以使得 凸塊334可以穿入孔洞3 13而相互欲合。在本實施例中凸塊 334疋為一圓柱體。同時，卡合件333的形狀與尺寸是對應 於固定部311開口 3111的形狀，在本實施例中卡合件333與 2〇頂板3331的形狀是設計為矩形，以使得卡合件333可以完全 卡置於固定部311中。因此，在將支撐裝置33設置於底板3 i 時，凸塊334在卡合件333穿入固定部311的過程中會產生彈 性變形，直至凸塊334穿入孔洞313後則恢復原狀。由於凸 9 M351369 塊334穿入孔洞313之後即與孔洞313相互崁合，因此支撐裝 置33就被固定在底板31上。 支撐裝置33之支撐件331為錐形柱體，並且内部為中 空以形成一容置空間332 »在本實施例中，光源32可設置於 5容置空間332中。藉著支撐裝置33與底板31之間的固定機 制，光源32則被穩定設置於底板31上。至少一光學膜片（圖 中未示）可設置在支撐裝置33的支撐件331上方，以接受支 撐件331提供的支撐力，藉此維持平整穩定的設置。 為了克服先前技術所述之鬆動脫離的問題，本創作針 10對卡合件333之二側邊335之間距離作特殊設計。在本實施 例中，一側邊335之間距離是被設計略較二嵌合壁312之間 距離為寬。因此，當支撐裝置33組裝於固定部311中之後， 即使在製造過程争存有公差，支撐裝置33與固定部311之間 在X方向上沒有存在間隙。是故，間隙只存在於嵌合壁3】2 I5與側邊335所在的y_z平面上，而且嵌合壁312與側邊335所 在的y-z平面與光源32設置在底板31上的x_y平面是不相同 的。故當嵌合壁312與卡合件333的侧邊335之間因間隙而旋 轉震動時，支撐裝置33只會產生y*z方向上的位移而不會 產生X方向的位移。因此，並不會影響光源32的位置，也不 20會迈成支撐裝置33鬆脫於底板31而影響背光模組3的信賴 性。 實施例二 圖4顯示本創作第二較佳實施例之背光模組分解圖。 25如圖所示，本實施例背光模組3之支撐裝置34之支撐件341 M351369 包含兩容置弧槽3411、3412，而光源32則可設置於支撐件 341的芩置弧槽3411、3412中。支撐裝置34更形成有一卡合 件342 ’其與支撐件341相連接，且卡合件342上具有四側邊 345，各側邊345上分別形成有一凸塊343，且在本實施例 5中’凸塊343是為一橢圓柱體。 另一方面，底板31具有一固定部314,其具有四嵌合 壁315’且各嵌合壁315上分別形成有一孔洞316,且底板31 與肷合壁315係為一體成形。固定部314之開口 3111的形狀 和卡合件342的形狀相對應，因此支撐裝置34可穿入固定部 10 3 14。在本實施例中，孔洞3丨6是為一糖圓孔。當支撐裝置 34穿入固定部314時，凸塊343可穿入孔洞316以使凸塊343 與孔洞316相互嵌合。 在本實施例中，支撐裝置34在又與丫方向上相對的兩個 側邊345之間的距離較相對應的兩個嵌合壁315之間的距離 15為寬。因此，在支標裝置34設置於固定部314後，即使在製 作過程中存在公差問題，由於χ_ζ平面與y z平面皆設置有 凸塊343與孔洞316相互嵌合，故支撲裝置34與固定部314 之間在光源32設置的χ-y平面上並沒有間隙的問題，而只可 旎產生z方向的位移。因而相較於上一實施例，本實施例之 20支撐裝置34更加穩定設置於底板31上，而能更佳固設光源 3 2的位置。 實施例三 圖5顯示本創作第三較佳實施例之背光模組之支撐裝 25置不意圖。如圖中所示，支撐裝置35具有一支撐件351、二 11 M351369 容置弧槽352、353及卡合件354，且二容置弧槽352、353 是分別設置在支撐件351兩側。前述之卡合件354的四個側 邊358上分別形成一凸塊355。在本實施例中，光源32是設 置於容置弧槽352、353中。此外支撐件351是一錐形柱體， 5可用來支撐至少一光學膜片（圖中未示）。 在本實施例中，底板31上亦形成有一固定部3丨1。本 實施例之固定部311亦形成有四個嵌合壁312，且各個欲合 壁312上亦設置有一孔洞313，且在本實施例中，孔洞3 13 為一圓孔；而卡合件354上具有四側邊358,各側邊35 8上分 10別开> 成有一凸塊3 5 5 ’且在本實施例中，凸塊3 5 5是為一圓 柱體。此外’底板3 1與嵌合壁3 12係為一體成形。 如圖5所示，固定部311之開口 3 U 1的形狀和卡合件 351的形狀相對應’因此支撐裝置35可穿入固定部3n。在 本實施例中，開口 3111的形狀是設計為矩形。而當支撐裝 15置35穿入固定部311時’凸塊355可穿入孔洞313並相互嵌 合0 在本實施例中，卡合件354側邊358之間的距離是被設 計與嵌合壁3 12之間的距離相當。縱然如此，因為支撑裝置 35四邊都藉著側邊358與固定部311之相對應的嵌合壁312 2〇相互嵌合’而使得支撐裝置35可與底板31固定，並不因製 造公差產生的位移或震動而發生鬆脫的現象。因此，透過 支揮裝置35與底板31的固定設置，光源不會大幅改變其設 置的位置。 12 M351369 因此，由上述實施例中可以得知，本創作提供之背光 模組及其支撐裝置’藉由固定部與卡合件的設計，免除支 樓裝置在光源設置平面上存在間隙之可能性，因此而能防 止光源與支撐裝置脫離或鬆動之可能性並且提昇其之信賴 上述實施例僅係為了方便說明而舉例而已，本創作所 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。 10【圖式簡單說明】 圖1係習知之背光模組結構示意圖。 圖2A係習知之燈管支架扣合部間隙示意圖。 圖2B係習知之燈管支架扣合部旋轉定位不良位置示意圖 圖3係本創作第一較佳實施例之背光模組分解圖。^ 圖4係本創作第二較佳實施例之背光模組分解圖。 圖5係本創作第三較佳實施例之背光模組分解圖。 【主要元件符號說明】 1，3背光模組 11背板M351369 VIII. New Description: [New Technology Field] This creation is about a backlight module, especially a backlight module that prevents its reliability from being affected by vibration. v 5 [Prior Art] A non-spontaneous illumination display such as a liquid crystal display needs to be provided - a backlight module to display the kneading surface. However, in order to make the display have a good display quality, the light source provided to the liquid crystal display panel must be as uniform as possible. Face 10 light source. Therefore, a plurality of optical films, such as a light guide plate or a diffusion sheet, are usually disposed between the tube and the liquid crystal display panel to adjust the optical properties of the light source emitted from the tube to be close to the uniform surface light source. Generally, a positioning member is generally designed in the backlight module such that the lamp tube and the optical film are stably disposed therein. Referring to the figure, as shown in the figure, in the structure of the conventional backlight module 1, the lamp tube 12 is assembled behind the backlight module 1, and the backlight module 1 is assembled with the side frame 14 to keep the lamp tube 12 The position is provided with a plurality of lamp holders 15 and gap legs 16. The lamp tube 12 is supported and fixed on the back plate through the lamp holder 15. The gap post 16 supports an optical film (not shown) on the top thereof to make the optical film (not shown) flat and stable. The crucible is disposed above the bulb 12. The positioning mechanism of the lamp holder 15 and the gap post 16 is coupled to the back plate 11 by means of a structure of a fastening portion (not shown) provided at the rear portion thereof and/or a screw. Please refer to FIG. 2A , which is a schematic diagram of the gap of the engaging portion of the lamp holder, which is depicted by the opposite side of the front view of the back panel 11 . In this direction, the structure of the rear end of the lamp tube 5 M351369 bracket 15 is designed. The lamp tube bracket 15 is designed with a fastening portion. The back plate 11 is provided with an opening 111 corresponding to the lamp tube bracket 15, and the fastening portion 151 is inserted into the opening 111. After being assembled and fixed by rotation, as shown in FIG. 2A, the size of the fastening portion 151 is designed to be slightly smaller than the size of the opening 111 and there are gaps Δ X and Δ y to facilitate assembly by the manufacturer. It is also possible to prevent a situation in which the size of the engaging portion 151 and the opening 111 is incompatible with each other due to manufacturing tolerances. However, when the lamp and the optical film are shaken due to vibration or poor locking, the display quality and reliability of the display will be affected. Referring to FIG. 10BB′, if the gap Δ y between the fastening portion 151 and the opening 111 is too large due to tolerance during the manufacturing process of the lamp holder 15 , after the lamp holder 15 is assembled There is a case where the rotational positioning is poor between the engaging portion 151 and the opening 111. When this happens, the position of the lamp holder 丨 5 is easily changed by the shock. The splicing also changes the position of the lamp. Because of this, the display quality and reliability of the display in which the backlight module is set are lowered. On the other hand, if there is a gap value between the fastening portion 151 and the opening U1 on the Z-axis due to manufacturing tolerances, the fastening portion 151 may even be detached from the opening m by vibration, which will affect the display of the display. Taste and trust are very big. At the same time, the gap struts 16 also cause the above problems. However, manufacturing tolerances are inevitable errors in the fabrication of components, so the above problems are an urgent problem to be solved in this technical field. [New content] M351369 backlight module, one of the main purpose of preventing the creation of a support device is to provide a disengagement or loosening of the support device. Backlight Modules, Enhancements Another purpose of this creation is to provide a level of reliability. :Achievement This creation provides a backlight module comprising: a light source and a support device. The bottom plate has a portion, the light source is disposed on the bottom plate, and the leather-loaded smashing device has a support member and a snap member, and has a receiving space for accommodating the light source, and the engaging member is stuck at 10 solid At the same time, the fixing portion has a hole, the engaging member has a convex piece, and the two pieces are engaged with the hole. The above-mentioned branch (4) can be of any shape or shape, and preferably the support member is tapered. The column structure is for the support - the optical film 2 or the support member further comprises a receiving arc groove for the light source to be disposed therein: and the arc groove is surrounded by a part of the surrounding surface or all the surrounding surfaces of the light source. The present invention further provides a backlight module comprising: a bottom plate, a light source and an S-Push device. The bottom plate has a fixing portion, and the light source is disposed on the bottom plate. The branching device has a _supporting member, a accommodating arc groove and a snapping device, wherein the light source is disposed in the accommodating arc groove, and the engaging member is disposed In the solid foundation P, the fixing portion has a hole, the engaging member has a convex portion, and the convex portion and the hole are fitted to each other. The support member extends a height to maintain the position of the optical film thereon' preferably a tapered cylinder. Further, the accommodating arc groove surrounds a peripheral surface or all surrounding surfaces of the light source. The bottom plate may be a bottom plate of any shape or pattern, and the material for use thereof is also not limited, and is preferably a metal material. 20 M351369 The present invention does not limit the shape or pattern of the fixing portion. Preferably, the fixing portion has a rectangular shape in the opening of the bottom plate, and the fixing portion has a fitting wall, and the engaging member has one side and is fitted. The wall corresponds to the side. Further, it is preferable that the bottom plate and the other wall are integrally formed. When the pushing device 5 is stuck to the fixing portion, the engaging member is elastically deformed until the projection is set in the hole to be restored. The outer width of the engaging member may be designed to be equal to or slightly wider than the width of the fixing portion, so that the supporting device is tightly fitted in the fixing portion, and the existence between the supporting device and the bottom plate in a certain direction of the lamp setting plane is eliminated. The possibility of a gap. 10 Therefore, the gap between the supporting device and the bottom plate of the present invention is different from the plane of the lamp tube setting. Even if the supporting device rotates in the plane of the gap, the displacement of the lamp tube or the loosening of the supporting device cannot be caused, thereby achieving the backlight module. Increased reliability and prevention of detachment or loosening of the support device. Secondly, for the shape or depth of the above-mentioned holes, the creation is also infinitely made, which may be a circular hole, an elliptical hole, a polygonal hole or a semi-circular hole, preferably a circular hole. On the other hand, the present invention does not limit the shape of the above-mentioned bumps. The shape of the bumps is preferably a shape corresponding to a hole such as a cylinder, an elliptical cylinder, a polygonal cylinder or a semi-cylindrical body, more preferably a cylinder or an ellipse. Column. Therefore, the design of the convex portion of the side and the hole of the fitting wall is mutually matched, so that the backlight module of the present invention does not cause the rotation of the swing device due to the gap between the support device and the bottom plate, thereby The support device is loosened from the bottom plate, thereby preventing the detachment or loosening of the support device, and further increasing the backlight mold. [Embodiment] Embodiment 1 FIG. 3 is an exploded view of a backlight module according to a first preferred embodiment of the present invention. As shown in the figure, the backlight module 3 includes a bottom plate 31, a light source 32, and a pusher 5 device 33. Both the support device 33 and the light source 32 are disposed on the bottom plate 31. A fixing portion 311 is formed on the bottom plate 31. A fixing wall 3 12 is formed on each side of the fixing portion 3 11 . The fitting wall 3 12 is formed with a hole 3 13 , and the bottom plate 31 and the general wall 3 12 are integrally formed. . In the embodiment, the opening 3 111 of the fixing portion 3 11 is rectangular, and the bottom plate 31 is integrally formed with the fitting wall 312, and the hole 313 is a circular hole made by a stamping process. However, in other embodiments of the present work, the above elements may also be fabricated in other ways. As shown in Fig. 3, the supporting device 33 has a supporting member 331 and a engaging member 333' and the engaging member 333 is located at one end of the supporting member 331. In addition, the engaging member 333 I5 has a side edge 335' and a protrusion 334 is formed on each side edge 335. The shape of the bump 334 corresponds to the hole 313 on the bottom plate 31 so that the bump 334 can penetrate the hole 3 13 to be mutually engaged. In the present embodiment, the bump 334 is a cylinder. At the same time, the shape and size of the engaging member 333 are corresponding to the shape of the opening 3111 of the fixing portion 311. In the embodiment, the shapes of the engaging member 333 and the second top plate 3331 are designed to be rectangular, so that the engaging member 333 can be completely The card is placed in the fixing portion 311. Therefore, when the supporting device 33 is disposed on the bottom plate 3 i, the bump 334 is elastically deformed during the penetration of the engaging member 333 into the fixing portion 311 until the projection 334 penetrates the hole 313 and returns to the original shape. Since the convex 9 M351369 block 334 is engaged with the hole 313 after penetrating the hole 313, the supporting device 33 is fixed to the bottom plate 31. The supporting member 331 of the supporting device 33 is a tapered cylinder, and the interior is hollow to form an accommodating space 332. In the embodiment, the light source 32 can be disposed in the accommodating space 332. The light source 32 is stably disposed on the bottom plate 31 by a fixing mechanism between the supporting device 33 and the bottom plate 31. At least one optical film (not shown) may be disposed above the support member 331 of the support device 33 to receive the supporting force provided by the support member 331, thereby maintaining a flat and stable arrangement. In order to overcome the problem of the loosening of the prior art, the present needle 10 is specially designed for the distance between the two side edges 335 of the engaging member 333. In the present embodiment, the distance between one side 335 is designed to be slightly wider than the distance between the two fitting walls 312. Therefore, after the supporting device 33 is assembled in the fixing portion 311, there is no gap in the X direction between the supporting device 33 and the fixing portion 311 even if there is a tolerance in the manufacturing process. Therefore, the gap exists only in the y_z plane where the fitting wall 3] 2 I5 and the side 335 are located, and the yz plane where the fitting wall 312 and the side 335 are located and the x_y plane where the light source 32 is disposed on the bottom plate 31 are not identical. Therefore, when the fitting wall 312 and the side edge 335 of the engaging member 333 are vibrated by the gap, the supporting means 33 generates only the displacement in the y*z direction without causing the displacement in the X direction. Therefore, the position of the light source 32 is not affected, and the support device 33 is loosened from the bottom plate 31 to affect the reliability of the backlight module 3. Embodiment 2 FIG. 4 is an exploded view of a backlight module according to a second preferred embodiment of the present invention. As shown in the figure, the support member 341 M351369 of the support device 34 of the backlight module 3 of the present embodiment includes two accommodating arc grooves 3411 and 3412, and the light source 32 can be disposed on the argon arc grooves 3411 and 3412 of the support member 341. in. The support device 34 is further formed with a latching member 342 ′′ connected to the support member 341 , and the latching member 342 has four sides 345 , and a protrusion 343 is formed on each of the side edges 345 , and in the embodiment 5 The bump 343 is an elliptical cylinder. On the other hand, the bottom plate 31 has a fixing portion 314 having four fitting walls 315' and each of the fitting walls 315 is formed with a hole 316, and the bottom plate 31 and the coupling wall 315 are integrally formed. The shape of the opening 3111 of the fixing portion 314 corresponds to the shape of the engaging member 342, so that the supporting device 34 can penetrate the fixing portion 10 3 14 . In the present embodiment, the hole 3丨6 is a sugar round hole. When the supporting device 34 penetrates the fixing portion 314, the bump 343 can penetrate the hole 316 to fit the projection 343 and the hole 316 to each other. In the present embodiment, the distance between the two fitting walls 315 of the supporting means 34 at the opposite side edges 345 is also wider than the distance between the two fitting walls 315. Therefore, after the support device 34 is disposed on the fixing portion 314, even if there is a tolerance problem in the manufacturing process, since the χ_ζ plane and the yz plane are both provided with the protrusion 343 and the hole 316 are fitted to each other, the baffle device 34 and the fixing portion There is no problem of the gap between the 314 in the χ-y plane provided by the light source 32, and only the displacement in the z direction can be generated. Therefore, compared with the previous embodiment, the support device 34 of the present embodiment is more stably disposed on the bottom plate 31, and the position of the light source 32 can be better fixed. Embodiment 3 FIG. 5 shows a support device 25 of a backlight module according to a third preferred embodiment of the present invention. As shown in the figure, the supporting device 35 has a supporting member 351, two 11 M351369 accommodating arc grooves 352, 353 and a engaging member 354, and two receiving arc grooves 352, 353 are respectively disposed on both sides of the supporting member 351. A bump 355 is formed on each of the four side edges 358 of the engaging member 354. In the present embodiment, the light source 32 is disposed in the accommodating arc grooves 352, 353. In addition, the support member 351 is a tapered cylinder, and 5 can be used to support at least one optical film (not shown). In the embodiment, a fixing portion 3丨1 is also formed on the bottom plate 31. The fixing portion 311 of the embodiment is also formed with four fitting walls 312, and each of the walls 312 is also provided with a hole 313. In the embodiment, the hole 3 13 is a circular hole; and the engaging member 354 is There are four sides 358, and each side edge 35 8 is divided into 10 pieces and has a protrusion 3 5 5 '. In the embodiment, the protrusion 3 5 5 is a cylinder. Further, the bottom plate 31 and the fitting wall 312 are integrally formed. As shown in Fig. 5, the shape of the opening 3 U 1 of the fixing portion 311 corresponds to the shape of the engaging member 351' so that the supporting device 35 can penetrate the fixing portion 3n. In the present embodiment, the shape of the opening 3111 is designed to be rectangular. When the support member 15 is inserted into the fixing portion 311, the bumps 355 can penetrate the holes 313 and are fitted to each other. In the present embodiment, the distance between the side edges 358 of the engaging members 354 is designed and fitted. The distance between the walls 3 12 is comparable. Even so, because the supporting members 35 are mutually engaged by the side edges 358 and the corresponding fitting walls 312 2 of the fixing portions 311, the supporting device 35 can be fixed to the bottom plate 31 without being caused by manufacturing tolerances. Looseness due to displacement or vibration. Therefore, the light source does not largely change the position of its setting by the fixed arrangement of the support device 35 and the bottom plate 31. 12 M351369 Therefore, it can be known from the above embodiments that the backlight module and the supporting device thereof provided by the present invention can eliminate the possibility that the branch device has a gap on the light source setting plane by the design of the fixing portion and the engaging member. Therefore, it is possible to prevent the light source from being detached or loosened from the supporting device and to enhance the reliability thereof. The above embodiments are merely examples for convenience of description, and the scope of the claims claimed herein is based on the scope of the patent application. It is not limited to the above embodiment. 10 [Simple description of the diagram] Figure 1 is a schematic diagram of the structure of a conventional backlight module. FIG. 2A is a schematic view showing the gap of the conventional lamp tube bracket fastening portion. 2B is a schematic view showing the position of the lamp unit bracket fastening portion in a rotational position. FIG. 3 is an exploded view of the backlight module of the first preferred embodiment of the present invention. Figure 4 is an exploded view of the backlight module of the second preferred embodiment of the present invention. FIG. 5 is an exploded view of a backlight module according to a third preferred embodiment of the present invention. [Main component symbol description] 1,3 backlight module 11 back plate
14側框 111開孔 32光源 312, 315嵌合壁 3331頂板 12燈管14 side frame 111 opening 32 light source 312, 315 fitting wall 3331 top plate 12 tube
支柱 固定部 3111 開 332容置空間 33, 34, 35 .支撐裝置 311，314 313，3 1 ό 孔洞 3 111 開 13 M351369 331，341，351 支撐件 334, 343, 355 凸塊 333, 342, 354 卡合件 335, 345, 358 側邊 3411，3412, 352, 353 容置弧槽The pillar fixing portion 3111 opens 332 the accommodation space 33, 34, 35. The supporting device 311, 314 313, 3 1 ό the hole 3 111 opens 13 M351369 331, 341, 351 the support member 334, 343, 355 the bump 333, 342, 354 Engagement parts 335, 345, 358 sides 3411, 3412, 352, 353