201011202 六、發明說明： 【發明所屬之技術領域】 本發明係關於背光裝置及其組裝方法，特別是關於使 用具有屈曲部的螢光燈之背光裝置及其組裝方法。 【先前技術】 以往，背光裝置係具有在發光面的正下方配置有光源 ® 之正下方型，和在配置於發光面的下側之導光板的側部具 有光源之側光型。特別是正下方型之背光裝置，由於將從 光源所射出的光直接照射到發光面，故適用於高輝度化。 在此正下方型的背光裝置，採用複數個具有3字型、 U字型等的屈曲部之屈曲型螢光燈的背光裝置爲眾所皆知 。此裝置，與採用複數個直管型的螢光燈之正下方型的背 光裝置進行比較時，能夠降低燈的使用支數及點燈電路的 數量，故可廉價地製造。 w 此以往的背光裝置係在由前框架及後框架所構成之框 體內部，從發光面側起依序分別配置有複數個擴散薄片、 擴散板、反射板，在擴散板與反射板之間，複數個屈曲型 螢光燈以其屈曲部位於發光區域內的方式，或對發光面呈 平行的方式，被並列地配置著（參照專利文獻1(段落 0025、0028 ' 圖 1 ) ) ° 上述的螢光燈係以燈的電極側作爲配置基準，配置於 框體內部，並藉由設置於燈電極側之複數個橡膠座、及配 置於框體的底面之燈保持板的對突起保持著。 201011202 又’藉由將配置於框體內部之螢光燈的一方的直管部 的電極側的一端***到寬度廣的筒狀***部，來吸收直管 部的位置之偏差並加以保持之背光裝置爲眾所皆知（參照 專利文獻2 (段落0019、圖1 ))。 又，螢光燈的屈曲部被支承部材所保持，包含電極部 之直管部的一端分別被***保持於橡膠座之背光裝置也爲 眾所皆知（參照專利文獻3 (段落0024、圖1、圖2 )) 響 〔專利文獻1〕日本特開2004-342576號公報 〔專利文獻2〕日本特開平7-27252 1號公報 〔專利文獻3〕日本特開2005-332813號公報 【發明內容】 〔發明所欲解決之課題〕 專利文獻1所記載的背光裝置係利用螢光燈的屈曲部 較其他部位更明亮地發光，來將屈曲部配置於發光區域內 ® 藉以達到高輝度化之裝置。但，爲了在發光面均等地發光 ，需要例如配合屈曲部的光量，使用可減輕光的透過量之 遮光圖案薄片等。 又，一般，屈曲型螢光燈的直管部的長度被容許有± 1.5mm左右的製造誤差。另外，設置於發光面的擴散板與 螢光燈之間的遮光圖案薄片之設計、補正屈曲部的明亮度 用之其他方法的反射面的形狀、表面的反射率之調整設計 等的均等發光用之設計，係設置成以框體的一部分爲基準 -6- 201011202 進行組裝加工。因此，如專利文獻1、2所記載之背光裝 置般，當將燈兩端之電極部作爲配置基準配置於框體的底 面時，由於燈直管部的長度之誤差，造成屈曲部的位置偏 差（參差不齊）產生，會有使發光面的輝度的均等性降低 的問題產生。 上述的問題，在上下被前框架與後框架所覆蓋之位置 (無效發光區域）配置屈曲部之結構上一樣存在，會有因 ® 屈曲部的位置之偏差，造成使發光面的輝度的均等性降低 之問題產生。 另外，相互大致呈平行之直管部之間隔，容許2mm 左右的製造誤差。在此直管部之間隔的誤差，會受到屈曲 部與直管部之連結部間的距離及屈曲部與直管部之連結部 之彎曲角度所影響。因此，於在專利文獻1、3所記載的 背光裝置配置有螢光燈之情況，會有因直管部之間隔的製 造誤差產生應力施加到直管部，造成螢光燈破損之問題產 ❹生。 又，在專利文獻1、3所記載之背光裝置，在配置例 如外徑 Φ 3.4mm且外徑許容之誤差爲0.4mm的燈之情況 ，用來保持燈的直管部之對突起的寬度、或用來保持直管 部的端部之橡膠座的開口寬度被攝製成爲3.2mm〜3.6 mm 。但，由於直管部之間隔，容許2mm左右的製造誤差， 故，爲了防止應力施加到直管部，需要降這些的寬度擴大 到4.6mm左右。但，當這樣擴大寬度時，會有因振動等造 成燈從對突起或橡膠座脫離而破損之問題產生。 -7- 201011202 因此，本發明的目的之一是在於提供可均等地發光之 背光裝置。又，本發明的其他目的是在於提供可抑制燈的 破損之背光裝置。 〔用以解決課題之手段〕 本發明的背光裝置係具備有框體、以及屈曲型螢光燈 ，該屈曲型螢光燈是配置於前述框體內，具備有大致平行 地配置之至少2支的直管部及連結前述直管部的屈曲部， @ 且在其兩端設有電極，其特徵爲，當將沿著前述直管部的 管軸之方向作爲X方向，將在以前述直管部與前述屈曲部 與所構成之平面上，對前述直管部的管軸呈垂直的方向作 爲y方向時，前述框體具備：可抑制前述屈曲部朝X方向 的位置偏移之第1燈保持體；可抑制一前述直管部朝y方 向的位置偏移之第2燈保持體；以及可吸收前述屈曲型螢 光燈的兩端部的至少X方向的位置偏差之一對偏差吸收保 持體，在前述第1燈保持體保持前述屈曲部，在前述第2 ® 燈保持體保持一前述直管部，而在一對前述偏差吸收保持 體分別保持前述屈曲型螢光燈的兩端部。 〔發明效果〕 若依據本發明，能夠提供可均等地發光，且能夠抑制 燈的破損之背光裝置。 【實施方式】 -8 - 201011202 以下，參照圖面說明關於本發明的實施例。 (第1實施例） 圖1是顯示本發明的第1實施例的背光裝置之分解斜 視圖。本實施例的背光裝置1 1係例如1 5英吋之液晶螢幕 用背光，如圖1所不，框體12係由框狀前框架13、後框 架14、及相互大致平行地配置之側板15a、15b所構成。 β 在框體12的內部，從發光面側依序配置有由擴散薄 片、稜鏡薄片、偏光薄片等所構成之光學薄片16、擴散板 1 7、及底部反射板1 8。底部反射板1 8係在與配設有側板 15a、15b之兩邊不同的兩邊，具有***形成之反射側部 18a。又，沿著側板15a配置有平行的側部反射板19。 圖2係顯示圖1所示的背光裝置之上面圖。如圖2所 示，在圖1所示的擴散板17與底部反射板18之間，複數 個（在此爲2支）屈曲型螢光燈20 (以下僅稱爲螢光燈 ® 20)以對發光面呈平行的方式被並列配置著。再者，在圖 2中，省略圖1的一部分（螢光燈的數量、及前框架、光 學薄片、擴散板）加以顯示著。 螢光燈20係爲全長即屈曲前的燈長大約800mm之3 字形狀冷陰極螢光燈（CCFL : Cold Cathode Fluorescent Lamp)。此螢光燈20是由在框體12的側板18a側的一端 具有電極部201且相互大致呈平行的2支的直管部202、 及將這些直管部202相互地連結的U字狀屈曲部203所構 成。屈曲部203是由直管部2 03a、及將直管部203a的兩 201011202 端與具有電極部201之直管部202分別連結之屈曲部203b 所構成。屈曲部203的直管部20 3a的長軸方向係與具有 電極部201之直管部202的長軸方向大致呈正交。 再者’在以下的說明，在對框體12的底面呈平行的 平面（例如，藉由螢光燈20的直管部202與屈曲部203 所構成的平面）上，將沿著具有電極部201之直管部202 的管軸的方向作爲X方向。又，在此平面上，將與X方向 呈正交的方向作爲y方向。 ❹ 圖3係顯示螢光燈20的屈曲部203附近及具有電極 部201的直管部2 02的一端之附近的放大上面圖。又，圖 4係沿著圖3的A-A’之斷面圖。 如圖3所示，在框體12的底面上，對1支的螢光燈 20’第1燈保持體24-1及第2燈保持體24-2各配置1個 。如圖4所示，第1燈保持體24-1的構造係爲在圓筒24a 的側面上部，形成有缺口部24b。又，在圓筒24a的外側 面下方，具有配置用銷24c。藉由此銷24c，配置於框體 ® 12的底面上。此燈保持體24-1的圓筒24a，其內徑形成 與屈曲部20 3的直管部20 3a的外徑大致相等，藉此可抑 制朝屈曲部203的X方向之位置偏移者。 又’第2燈保持體24-2的形狀係爲與圖4所示的第1 燈保持體24-1相同的形狀，圓筒24a的內徑形成爲與具 有電極部201之直管部2 02的外徑大致相等，藉此可抑制 朝直管部2 02的y方向之位置偏移者。 在此，位置偏移之抑制係指，當例如，將直管部202 -10- 201011202 、屈曲部203等保持於燈保持體時，該保持部分被穩固地 保持成朝對管軸方向呈垂直的方向不會產生位置偏移之意 。之後的偏移抑制也爲相同意思。 這樣的第1燈保持體24-1，分別如圖3所示，以圓筒 24 a的中心軸的方向朝向y方向的方式配置。且，配置於 側部反射板1 9與各自的圓筒24a的中心軸之距離L 1相等 的位置。此距離L1係爲例如，設計成屈曲部203被配置 ® 於圖1的前框架13與後框架14覆蓋了上下之領域的位置 。艮卩，屈曲部203，配置於圖2的斜線所示之無效發光區 域121，使得幾乎不會有助於背光裝置11的發光。 又，第2燈保持體24-2係配置成此燈保持體24-2的 圓筒24a的中心軸朝向X方向。且，第2燈保持體24-2 係當直管部2 02的全長設爲L5時，在從直管部202與屈 曲部2 03之境界朝-X方向，於（L5) /2的領域內，配置 於保持直管部 202之位置。在此實施例，L5大約爲 ® 380mm，相對於此，第2燈保持體24-2係配置於從直管部 202與屈曲部20 3之境界起大約20mm的位置。 且，第2燈保持體24-2的y方向的位置係爲設計成 螢光燈20所具有之所有的直管部202的間隔變得相等之 位置。即，當將螢光燈20的直管部202的間隔設爲P， 相鄰的螢光燈20的直管部202的間隔設爲L時，設計成 P與L變成相等之位置。在此實施例，P與L均設定成大 約 40mm。 再者，在之後的說明，燈保持體的方向是指圓筒的中 -11 - 201011202 心軸的方向。換言之，是指被圓筒所保持的部位之長軸方 向。 如圖3所示’在框體12底面上，對1支的螢光燈20 ，一對的偏差吸收保持體25沿著側板15b被配置著。圖5 係顯示此偏差吸收保持體25之斜視圖。又，圖6係沿著 圖5的B-B’之斷面圖。但，在圖5中，省略一部分予以顯 示。 如圖5所示，偏差吸收保持體25具有直管部***口 @ 25a。在直管部***口 25a，形成有電極部201之直管部 202的一端分別被***。 此時，與反射側部18a呈平行的平面之直管部***口 2 5a的斷面（横斷面）的形狀係爲在y方向具有長軸之楕 圓形。此楕圓的長軸的長度係形成爲較直管部202的y方 向的位置的製造誤差所引起之偏差量更長，藉此吸收螢光 燈20的兩端部的y方向的位置偏差。另外，與長軸正交 的楕圓之短軸方向的長度係與直管部202的外徑大致相等 ® 〇 如圖6所示，成爲直管部***口 25a之長孔的長度 L2，係如圖3所示，當將直管部2 02的前端之位置的製造 誤差所引起之最大的偏差量設爲L3時，形成爲較L3更長 ，藉以可吸收因螢光燈20的兩端部的X方向的位置偏差 。藉此，直管部202的X方向的位置偏差被吸收。再者’ 朝圖3、圖5所示的X方向、y方向之未被賦予符號的箭 號係顯示以各自的箭號所示的方向的位置偏差被吸收之方 -12- 201011202 向。在之後的各圖中也相同。 在此，位置偏差的吸收係指，例如，即使在所 直管部202的位置上具有偏差之情況時，應力不會 直管部202並一定被保持之意。在之後的偏差的吸 相同之意。 在被偏差吸收保持體25所保持的直管部202 之電極部20 1，連接著導線41。導線41係具有補 ® 的偏差量L3之長度。此導線41係經由從直管部 25a朝下方所形成的導線用孔25b，被導出到偏差 持體25的外部。所導出之導線41係藉由連接於圖 的鎧甲（harness ) 40，來與外部電源（未圖示）電 以上所說明之複數個偏差吸收保持體25係如丨 示，沿著側板15b配置於框體12底部。各自的偏 保持體25係被配置成直管部***口 25a的長軸方向 ®方向。 在將螢光燈20安裝於以上所說明的背光裝置 況，將屈曲部203的X方向的位置及直管部202的 y方向的位置，以配置螢光燈20時的位置基準爲基 安裝。即，首先，將屈曲部203保持於第1燈保持 ，而將直管部202保持於第2燈保持體24-2。此時 順序亦可同時，亦可個別進行。如此，固定屈曲部 X方向的位置及一方的直管部2 02的y方向的位置 直管部2 02的一端保持於偏差吸收保持體25。 保持的 施加於 收也爲 的一端 償上述 ***口 吸收保 1所示 性連接 I 3所 差吸收 朝向X 11之情 一方的 準進行 體 24-1 的保持 203的 後，將 -13- 201011202 如以上所說明，若依據第1實施例的背光裝置1 1，當 將屈曲部2 03的位置作爲X方向的配置基準，將一方的直 管部202的位置作爲y方向的配置基準，將螢光燈20配 置於框體12的內部後，一邊吸收燈的位置偏差，一邊配 置螢光燈20。藉此，即使在螢光燈20有製造誤差，屈曲 部203的X方向的位置也會被配置於所設計之位置的同時 ，一方的直管部2 02的y方向的位置也會被配置於所設計 之位置。因此，能夠使背光裝置11均等地發光。此時， @ 將保持複數個被配置之螢光燈20的各自的屈曲部20 3之 第1燈保持體24-1配置於沿著y方向之一直線上，使各 燈的屈曲部203的X方向的位置一致，因此，容易進行抑 制因各屈曲部203所引起的不均之設計。 由於可將屈曲部203及直管部202的一方配置於所設 計之位置，故，能容易進行用來均等地發光的裝置之設計 。具體而言，在設置於發光面的擴散板17與螢光燈20之 間的遮光圖案薄片的設計及反射面的形狀、表面的反射率 @ 的調整等之均等發光用的裝置之設計，變得不需要考量屈 曲部203及直管部202的位置偏差，故容易進行裝置之設 計。 又，偏差吸收保持體25能夠吸收直管部202的X方 向及y方向的位置偏差。因此，即使在直管部202的長度 、直管部2 02間的距離有偏差（參差不齊），也不會有應 力施加到直管部202，而可保持直管部202的一端。因此 ，能夠抑制因振動等所造成之螢光燈20的破損。 -14 - 201011202 又，藉由將至少一個第2燈保持體24-2配置於從直 管部202與屈曲部203的境界起，到對直管部202的全長 L5呈（L5) /2的領域內，變得容易將該直管部202設定 於y方向的位置基準，並且即使螢光燈20因振動等而擺 動，也能夠使得在屈曲部203附近的直管部2 02不易產生 破損。再者，在從直管部202與屈曲部203的境界起，到 對直管部202的全長L5呈（L5) /4的領域內更佳。 (第2實施例） 圖7係顯示第2實施例的背光裝置，顯示螢光燈20 的屈曲部203附近及具有電極部201之直管部202的一端 之附近的放大上面圖。 如圖7所示，第2實施例的背光裝置，與圖3所示的 第1實施例的背光裝置不同點在於，保持被第2燈保持體 24-2所保持的直管部2 02的一端之偏差吸收保持體。 _ 在此，在以下的說明，將圖5、圖6所示的偏差吸收 保持體稱爲第1偏差吸收保持體25。又，在第2實施例， 將用來保持被第2燈保持體24-2所保持的直管部202的 一端之偏差吸收保持體稱爲第2偏差吸收保持體27。 圖8係顯示第2偏差吸收保持體27之斜視圖。如圖8 所示，第2偏差吸收保持體27，其與第1偏差吸收保持體 25不同點在於，直管部***口 2 7a的斷面形狀爲圓形的這 一點。直管部***口 27a係形成爲直徑大致與直管部202 的外徑相等。藉此，第2偏差吸收保持體27係吸收被其 -15- 201011202 所保持的直管部2 02的x方向的位置偏差，抑制y方向的 位置偏移，因此能夠一邊吸收直管部2 02的X方向的位置 偏差，一邊將y方向的位置配置於所設計之位置。 保持1支的螢光燈20、並由第1偏差吸收保持體25 及第2偏差吸收保持體27所構成之一對的偏差吸收保持 體係沿著框體12的側板15b被配置著。此時，第2偏差 吸收保持體27係被配置成：例如，配置於框體12的內部 之所有螢光燈20所具有的直管部202的間隔各自變得相 ❿ 等。 即使在將螢光燈20安裝於圖8所示的背光裝置之情 況，螢光燈20也是將屈曲部203的X方向的位置及直管 部2 02的y方向的位置作爲配置基準加以安裝。即，首先 ，將屈曲部203保持於第1燈保持體24-1，而將直管部 2 02保持於第2燈保持體24-2。此時的保持順序，亦可爲 同時進行，亦可爲個別進行。如此將屈曲部203及一方的 直管部202的一端予以保持後，將一方的直管部202的一 〇 端保持於第2偏差吸收保持體27,並且使另一方的直管部 2 02的一端保持於第1偏差吸收保持體25。 即使爲這樣的背光裝置，也能與第1實施例的背光裝 置同樣地，均等地進行發光。又，容易進行用來均等地發 光之設計。 又，由於將一方的直管部202的一端保持於第2偏差 吸收保持體27，而將另一方的直管部202的一端保持於第 1偏差吸收保持體25，不僅可抑制螢光燈20的破損，也 -16- 201011202 能將一方的直管部2 02的y方向的位置更容易且正確地配 置於所設計的位置。 (第3實施例） 圖9係顯示第3實施例的背光裝置，爲顯示螢光燈20 的屈曲部203附近及具有電極部201之直管部202的一端 之附近的放大上面圖。又，圖10係沿著圖9所示的C-C’ © 之斷面圖。 如圖9所示，第2實施例的背光裝置，其與圖7所示 的第2實施例的背光裝置之不同點在於，保持1支的螢光 燈20之第1燈保持體24-1及第2燈保持體24-2形成於L 字狀保持板28上的兩端附近的預定位置之這一點。第1、 第2燈保持體2 4-1、24-2的保持板28上之位置係爲因應 所要保持之螢光燈20預先所設計的位置。 如圖10所示’第1燈保持體24-1係形成於L字狀保 ® 持板28上所形成的銷29上。雖未圖示，第2燈保持體 2 4-2也同樣地形成於保持板28上。這樣的保持板28係藉 由配置用銷30來配置於框體12的底面上。此時，保持板 28係以第1燈保持體24-1及第2燈保持體24-2的位置成 爲與第1、第2實施例的背光裝置相同位置的方式，配置 於框體12的底面上。 即使在將螢光燈20安裝於圖9所示的背光裝置之情 況，將屈曲部203的位置及一方的直管部202的位置作爲 配置螢光燈20時的位置基準來安裝。具體的安裝方法是 -17- 201011202 採用與第2實施例的背光裝置相同的方法。 即使以上所示的第3實施例之背光裝置，也能與第2 實施例的背光裝置同樣地，均等地進行發光。又，容易進 行用來均等地發光之設計。且，能夠抑制螢光燈20的破 損。 且，若依據第3實施例之背光裝置，由於在保持板28 上的預定位置形成第1、第2燈保持體24-1、24-2，故， 利用第1、第2燈保持體24-1、24-2中之一方的位置配置 ❹ 於期望的位置的方式來配置，使得另一方的位置也自動地 被決定。因此，容易決定螢光燈20的配置基準。 (第4實施例） 圖Π係顯示第4實施例的背光裝置，爲顯示螢光燈 20的屈曲部203附近及具有電極部20 1之直管部202的一 端之附近的放大上面圖。又，圖12係沿著圖II所示的 D-D，之斷面圖。 春 如圖11所示，第4實施例的背光裝置，其與圖9所 示的第3實施例的背光裝置之不同點在於，被第2燈保持 體24-2所保持的直管部202，進一步被配置於第2燈保持 體24-2與第2偏差吸收保持體27之間的框體12底部之 第3燈保持體24-3所保持的這一點。在此，第2燈保持 體24-2、與第3燈保持體24-3分別配置於相同一向，配 置於各自從反射側部18a起的距離相等之位置。 又，在框體12的底部，保持另一方的直管部202之 -18- 201011202 偏差吸收型的燈保持體31朝向χ方向的方式被配置著的 這一點也不同。此偏差吸收型的燈保持體31爲能夠吸收 另一方的直管部2 02的y方向的位置偏差者。 偏差吸收型的燈保持體31是如圖12所示，與圖4所 示的第1燈保持體24-1的不同點在於，筒體的斷面形狀 不同的這一點。即，偏差吸收型的燈保持體31具有斷面 形狀呈楕圓狀之筒體32。此楕圓之長軸的長度爲至少另一 © 方的直管部202的外徑加上直管部202間的距離P所容許 的最大誤差之長度以上。藉此，能夠吸收另一方的直管部 2 02的y方向的位置偏差。 在將螢光燈20安裝於圖11所示的背光裝置之情況， 將屈曲部203的位置及一方的直管部202的位置作爲配置 螢光燈20時的位置基準予以安裝。即，首先，將屈曲部 203保持於第1燈保持體24_1，而將一方的直管部202保 持於第2、第3燈保持體2 4-2、24-3。此時的保持順序， ® 亦可同時進行，亦可個別進行。如此，固定屈曲部203及 一方的直管部202的位置後，將另一方的直管部202保持 於偏差吸收型的燈保持體31。最後，使一方的直管部202 的一端保持於第2偏差吸收保持體27,並且將另一方的直 管部202的一端保持於第1偏差吸收保持體25。 以上所示的第4實施例的背光裝置，也能與第3實施 例的背光裝置同樣地均等發光。又，容易進行均等發光用 之設計。又，容易決定螢光燈20的配置基準。且，能夠 抑制螢光燈20的破損。 -19- 201011202 又，若依據第4實施例的背光裝置，藉由第3燈保持 體24-3保持一方的直管部2 02，並使另一方的直管部2 02 保持於偏差吸收型的燈保持體31，故，特別是在直管部 202的長度L5超過400mm這樣的長條狀螢光燈20之情況 ，能更有效地抑制破損產生。 以上，說明了關於本實施例之背光裝置，但本發明在 不超出發明的技術思想範圍下可進行各種變更，例如可如 下述般進行變更。 ❾ 作爲螢光燈20，不限於冷陰極螢光燈，亦可爲外部電 極營光燈（EEFL: External Electrode Fluorescent Lamp ) 或熱陰極營光燈（HCFL : Hot Cathode Fluorescent Lamp )。又，長度、直徑、支數等也不限於實施例者，可進行 各種變更。 又，作爲螢光燈20，亦可適用如圖13所示這種具備 有大致呈平行的3支直管部2 02與連接這些直管部之2支 的屈曲部203的S字狀螢光燈20。在此情況，如圖所示 〇 ，亦可將位於正中的直管部202作爲y方向的基準。又， 亦可適用如圖14所示這種具備有大致呈平行的4支直管 部202與連接這些直管部之3支的屈曲部203的W字狀螢 光燈20。在此情況，如圖所示，亦可將位於正中的屈曲部 2〇3作爲X方向的基準。又，螢光燈20的屈曲部203不限 於具有直管部203b之形狀，亦可爲如圖15所示這種以弧 狀所構成之形狀。 第1燈保持體24-1、第2燈保持體24-2的缺口部24b -20- 201011202 不限於開口於圓筒24a的上部之情況，亦可形成爲開口於 側部。又，作爲第1燈保持體24-1、第2燈保持體24-2， 亦可使用如圖16所示這種配置於框體12的底面、對突起 2 6b的間隔形成爲較L4大，或可吸收所要保持之直管部 2 02的y軸方向的位置偏差左右之較L4大的保持體。 第1燈保持體24-1係亦可如圖17及沿著圖17的E-E’之斷面圖的圖18所示，藉由配置於框體12的底部之複 Ο 數支銷26a所構成，該複數支銷26a中，至少2支與屈曲 部203的內側接觸，而至少1支與屈曲部203的外側接觸 。在此第1燈保持體24-1的情況，屈曲部203係被配置 成受到這些銷26a之間所夾持，在屈曲部203的y方向的 複數個部位，被接觸保持於銷26a，因此，能夠分散螢光 燈20與第1燈保持體24-1之接觸部位。因此，能夠抑制 因接觸所引起之螢光燈20局部溫度降低，進而能夠以屈 曲部2 03的X方向的位置作爲配置基準，並且抑制朝水銀 ® 的屈曲部203之偏靠。 作爲第1偏差吸收保持體25，即使在直管部202具有 長度的偏差也能加以保持者即可，因此，例如亦可爲如圖 19所示這種配置於框體12的底部，並將螢光燈20的電極 201附近的玻璃部分保持成可吸收y方向的位置偏差，並 且可吸收X方向的位置偏差的方式來與電極201連接之燈 座這樣的構件。 又，作爲第2偏差吸收保持體27，若爲即使在直管部 202的長度、直管部202間的間隔P上具有偏差也能加以 -21 - 201011202 保持即可’因此例如圖20所示這種配置於框體12的底部 ’並保持螢光燈20的電極201附近的玻璃部分使得可抑 制y方向的位置偏移，並且可吸收X方向的位置偏差的方 式來與電極201連接之燈座這樣的構件。 作爲配置第3實施例之第1燈保持體24· 1及第2燈 保持體24-2的L字狀保持板28，亦可使用如圖21所示這 種y方向的長度超過直管部202間的間隔P —半長度之 P/2的構件。在此情況，第1燈保持體24-1與第2燈保持 參 體2 4-2及銷30所構成之三角形的面積會增加。因此，可 提昇保持讓保持屈曲部203與直管部20 2時的燈之平衡感 提昇，可減輕因衝撃、振動等所引起之燈的搖晃，藉此可 抑制燈的破裂。 又，亦可如圖22所示，爲在兩端具備第1燈保持體 2 4-1而在其中間具備2個第2燈保持體24-2之3字狀保 持板34。在此情況，藉由保持板34，能夠保持2支的螢 光燈20所鄰接的直管部2 02與各自的屈曲部20 3，因此， @ 能夠較圖20的保持板28更提昇用來保持燈之平衡感，可 減輕因衝撃、振動等所引起之燈的搖晃，藉此可抑制燈的 破裂。又，在此保持板34，能夠縮小背光裝置11的中央 輝度的偏差。即，在液晶電視等之用途，被要求高的中央 輝度，但，利用以2個第2燈保持體24-2來保持2支的 螢光燈20的鄰接之直管部2 02，能夠進行將背光裝置11 的y方向的中央作爲基準之設計。這在使用2支螢光燈20 之情況特別有效。 -22- 201011202 【圖式簡單說明】 圖1是顯示本發明的背光裝置之分解斜視圖。 圖2是圖1所示的第1實施例的背光裝置之上面圖。 圖3是圖2所示的第1實施例的背光裝置之放大圖。 圖4是沿著圖3的A-A’之斷面圖。 圖5是顯示第1偏差吸收保持體之斜視圖。 圖6是沿著圖5的B-B’之斷面圖。 圖7是第2實施例的背光裝置之放大圖。 圖8是顯示第2偏差吸收保持體之斜視圖。 圖9是第3實施例的背光裝置之放大圖。 圖1〇是沿著圖10的C-C’之斷面圖。 圖11是第4實施例的背光裝置之放大圖。 圖12是沿著圖11的D-D’之斷面圖。 圖13是顯示螢光燈的第1變形例之圖。 圖14是顯示螢光燈的第2變形例之圖。 圖15是顯示螢光燈的第3變形例之圖。 圖16是顯示燈保持體的第1變形例之放大圖。 圖17是顯示燈保持體的第2變形例之圖。 圖1 8是沿著圖1 7的E-E’之斷面圖。 圖19是顯示第1偏差吸收保持體的變形例之斜視圖 > 圖20是顯示第2偏差吸收保持體的變形例之斜視圖 -23- 201011202 圖21是顯示保持板的第1變形例之圖。 圖22是顯示保持板的第2變形例之圖。 【主要元件符號說明】 1 1 :背光裝置 12 :框體 13 :前框架 1 4 :後框架 _ 1 5 a、1 5 b :側板 1 6 :光學薄片 1 7 :擴散板 1 8 :底部反射板 18a :反射側部 1 9 :側部反射板 2 0 :屈曲型螢光燈 201 :電極部 © 202 :直管部 203 :屈曲部 203a :屈曲部的直管部 203b:直管部203a的兩端之屈曲部 24-1 :第1燈保持體 24a :圓筒 24b :缺口部 24c ··銷 -24- 201011202 24-： 24-： 25 : 25a 25b 26a 26b 〇 2 7 ： 27a 28、 29 : 30 : 3 1: 32 : ::第2燈保持體 ;:第3燈保持體 第1偏差吸收保持體 :直管部***口 =導線用孔 ••銷 :對突起 第2偏差吸收保持體 :直管部***口 34 :保持板 銷 固定用銷 偏差吸收型的燈保持體 楕圓狀筒體BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backlight device and an assembly method thereof, and more particularly to a backlight device using a fluorescent lamp having a bent portion and an assembly method thereof. [Prior Art] Conventionally, a backlight device has a direct type in which a light source ® is disposed directly under a light emitting surface, and a side light type having a light source on a side portion of a light guide plate disposed on a lower side of the light emitting surface. In particular, the backlight device of the direct type is suitable for high luminance because the light emitted from the light source is directly irradiated onto the light-emitting surface. In the backlight device of the direct type, a plurality of backlight devices having a buckling type fluorescent lamp having a bent portion such as a zigzag type or a U-shape are known. This device can be manufactured at a low cost by comparing the number of used lamps and the number of lighting circuits when compared with a direct type backlight device using a plurality of straight tube type fluorescent lamps. w The conventional backlight device is disposed inside a casing formed by a front frame and a rear frame, and a plurality of diffusion sheets, a diffusion plate, and a reflection plate are disposed in order from the light-emitting surface side, between the diffusion plate and the reflection plate. The plurality of buckling-type fluorescent lamps are arranged side by side such that the bent portions are located in the light-emitting region or in parallel with the light-emitting surfaces (see Patent Document 1 (paragraphs 0025, 0928 'Fig. 1)) The fluorescent lamp is disposed inside the casing with the electrode side of the lamp as an arrangement reference, and is held by a plurality of rubber seats provided on the lamp electrode side and a pair of protrusions of the lamp holding plate disposed on the bottom surface of the frame. . 201011202 Further, by inserting one end of the electrode side of the straight tube portion of the fluorescent lamp disposed inside the housing into the cylindrical insertion portion having a wide width, the position of the straight tube portion is absorbed and the backlight is held. The device is well known (refer to Patent Document 2 (paragraph 0019, Fig. 1)). Further, the buckling portion of the fluorescent lamp is held by the support member, and a backlight device including the end portion of the straight tube portion including the electrode portion is inserted into the rubber seat (see Patent Document 3 (paragraph 0024, Fig. 1). (2) [Patent Document 1] Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. No. Hei. [Problems to be Solved by the Invention] The backlight device described in Patent Document 1 uses a device in which the buckling portion of the fluorescent lamp emits light more brightly than other portions, and the buckling portion is disposed in the light-emitting region to achieve high luminance. However, in order to uniformly emit light on the light-emitting surface, it is necessary to use, for example, a light-shielding pattern sheet which can reduce the amount of light transmitted, and the like. Further, in general, the length of the straight tube portion of the buckling fluorescent lamp is allowed to have a manufacturing error of about ±1.5 mm. In addition, the design of the light-shielding pattern sheet between the diffusing plate and the fluorescent lamp provided on the light-emitting surface, the shape of the reflecting surface for correcting the brightness of the bent portion, and the uniformity of the reflectance of the surface are designed. The design is set to be assembled based on a part of the frame -6-201011202. Therefore, as in the case of the backlight device described in Patent Documents 1 and 2, when the electrode portions at both ends of the lamp are placed on the bottom surface of the casing as an arrangement reference, the positional deviation of the buckling portion is caused by the error in the length of the straight pipe portion. (Jumpy) occurs, and there is a problem that the uniformity of the luminance of the light-emitting surface is lowered. The above problem exists in the structure in which the buckling portion is disposed at the position where the front frame and the rear frame are covered by the front frame (ineffective light-emitting region), and the luminance of the light-emitting surface is uniform due to the deviation of the position of the ?-buckling portion. Reduced problems arise. Further, the interval between the straight pipe portions which are substantially parallel to each other allows a manufacturing error of about 2 mm. The error in the interval between the straight pipe portions is affected by the distance between the connecting portion between the bent portion and the straight pipe portion and the bending angle of the connecting portion between the bent portion and the straight pipe portion. Therefore, when the fluorescent lamp is disposed in the backlight device described in Patent Documents 1 and 3, stress is applied to the straight tube portion due to a manufacturing error in the interval between the straight tube portions, causing damage to the fluorescent lamp. Health. Further, in the backlight device described in Patent Documents 1 and 3, for example, when a lamp having an outer diameter Φ of 3.4 mm and an outer diameter tolerance of 0.4 mm is disposed, the width of the pair of protrusions of the straight tube portion of the lamp is maintained. Or the opening width of the rubber seat for holding the end of the straight pipe portion is taken to be 3.2 mm to 3.6 mm. However, since the interval between the straight pipe portions allows a manufacturing error of about 2 mm, it is necessary to reduce the width to about 4.6 mm in order to prevent stress from being applied to the straight pipe portion. However, when the width is widened in this way, there is a problem that the lamp is broken from the projection or the rubber seat due to vibration or the like. -7- 201011202 Therefore, it is an object of the present invention to provide a backlight device which can emit light equally. Further, another object of the present invention is to provide a backlight device capable of suppressing breakage of a lamp. [Means for Solving the Problem] The backlight device of the present invention includes a housing and a buckling fluorescent lamp, and the buckling fluorescent lamp is disposed in the housing and includes at least two of which are arranged substantially in parallel a straight pipe portion and a bent portion connecting the straight pipe portion, @ and an electrode provided at both ends thereof, wherein when the direction along the pipe axis of the straight pipe portion is taken as the X direction, the straight pipe will be When the direction of the straight portion and the tube axis of the straight tube portion is the y direction, the frame body includes the first lamp that can suppress the positional shift of the buckling portion in the X direction. a holding body; a second lamp holder capable of suppressing a positional shift of the straight tube portion in the y direction; and absorbing one of the positional deviations of at least the X direction of both end portions of the buckling type fluorescent lamp In the first lamp holder, the buckling portion is held, and the second tube holder holds the straight tube portion, and the pair of the deviation absorption holders respectively hold the both ends of the buckling type fluorescent lamp . [Effect of the Invention] According to the present invention, it is possible to provide a backlight device which can emit light uniformly and can suppress breakage of a lamp. [Embodiment] -8 - 201011202 Hereinafter, an embodiment of the present invention will be described with reference to the drawings. (First Embodiment) Fig. 1 is an exploded perspective view showing a backlight device according to a first embodiment of the present invention. The backlight device 1 of the present embodiment is, for example, a backlight of a liquid crystal screen of 15 inches, as shown in Fig. 1, the frame 12 is a frame-shaped front frame 13, a rear frame 14, and side plates 15a arranged substantially parallel to each other. And 15b. In the inside of the casing 12, an optical sheet 16, a diffusing plate 17, and a bottom reflecting plate 18 composed of a diffusion sheet, a ruthenium sheet, a polarizing sheet, and the like are disposed in this order from the light-emitting surface side. The bottom reflecting plate 18 is formed on both sides different from the side on which the side plates 15a and 15b are disposed, and has a reflecting side portion 18a formed by the bulging. Further, parallel side reflection plates 19 are disposed along the side plates 15a. 2 is a top view showing the backlight device shown in FIG. 1. As shown in FIG. 2, between the diffuser plate 17 and the bottom reflector 18 shown in FIG. 1, a plurality of (here, two) buckling fluorescent lamps 20 (hereinafter simply referred to as fluorescent lamps 20) are used. The light-emitting surfaces are arranged in parallel in parallel. Further, in Fig. 2, a part of Fig. 1 (the number of fluorescent lamps, the front frame, the optical sheet, and the diffusion plate) is omitted. The fluorescent lamp 20 is a three-character cold cathode fluorescent lamp (CCFL: Cold Cathode Fluorescent Lamp) having a total length of about 800 mm before the buckling. The fluorescent lamp 20 is a straight pipe portion 202 having two electrode portions 201 at one end on the side plate 18a side of the casing 12 and substantially parallel to each other, and a U-shaped buckling that connects the straight pipe portions 202 to each other. The unit 203 is configured. The bent portion 203 is composed of a straight tube portion 203a and a bent portion 203b that connects the two ends of the straight tube portion 203a to the 201011202 and the straight tube portion 202 having the electrode portion 201. The longitudinal direction of the straight tube portion 20 3a of the bent portion 203 is substantially orthogonal to the longitudinal direction of the straight tube portion 202 having the electrode portion 201. In the following description, on the plane parallel to the bottom surface of the casing 12 (for example, a plane formed by the straight pipe portion 202 and the bent portion 203 of the fluorescent lamp 20), there will be an electrode portion along the electrode portion. The direction of the tube axis of the straight tube portion 202 of 201 is referred to as the X direction. Further, on this plane, a direction orthogonal to the X direction is referred to as a y direction. 3 is an enlarged top view showing the vicinity of the bent portion 203 of the fluorescent lamp 20 and the vicinity of one end of the straight tube portion 208 having the electrode portion 201. 4 is a cross-sectional view taken along line A-A' of FIG. 3. As shown in Fig. 3, one of the first lamp holders 24-1 and the second lamp holders 24-2 is disposed on the bottom surface of the casing 12 for each of the fluorescent lamps 20'. As shown in Fig. 4, the first lamp holder 24-1 has a structure in which a notch portion 24b is formed on the upper portion of the side surface of the cylinder 24a. Further, a pin 24c for arrangement is provided below the outer surface of the cylinder 24a. The pin 24c is placed on the bottom surface of the frame ® 12. The cylinder 24a of the lamp holding body 24-1 has an inner diameter which is substantially equal to the outer diameter of the straight pipe portion 203a of the bent portion 203, whereby the positional deviation in the X direction of the buckling portion 203 can be suppressed. Further, the shape of the second lamp holder 24-2 is the same as that of the first lamp holder 24-1 shown in Fig. 4, and the inner diameter of the cylinder 24a is formed to be the straight tube portion 2 having the electrode portion 201. The outer diameter of 02 is substantially equal, whereby the positional deviation in the y direction of the straight tube portion 022 can be suppressed. Here, the suppression of the positional deviation means that, for example, when the straight tube portion 202-10-201011202, the flexion portion 203, and the like are held by the lamp holding body, the holding portion is stably held to be perpendicular to the tube axis direction. The direction does not create a positional offset. The subsequent offset suppression also has the same meaning. As shown in Fig. 3, each of the first lamp holders 24-1 is disposed such that the direction of the central axis of the cylinder 24a faces the y direction. Further, the side reflectors 9 are disposed at positions equal to the distance L 1 of the central axes of the respective cylinders 24a. This distance L1 is, for example, designed such that the buckling portion 203 is disposed in a position in which the front frame 13 and the rear frame 14 of Fig. 1 cover the upper and lower areas. That is, the bent portion 203 is disposed in the ineffective light-emitting region 121 shown by the oblique line in Fig. 2 so that the light emission of the backlight device 11 is hardly contributed. Further, the second lamp holder 24-2 is disposed such that the central axis of the cylinder 24a of the lamp holder 24-2 faces the X direction. In the second lamp holder 24-2, when the total length of the straight tube portion 022 is L5, the field from the boundary between the straight tube portion 202 and the flexure portion 203 toward the -X direction is in the field of (L5) /2. The inside is disposed at a position where the straight tube portion 202 is held. In this embodiment, L5 is approximately 380 mm, whereas the second lamp holder 24-2 is disposed at a position of approximately 20 mm from the boundary between the straight tube portion 202 and the flexure portion 203. Further, the position of the second lamp holder 24-2 in the y direction is a position designed such that the intervals of all the straight tube portions 202 of the fluorescent lamp 20 are equal. In other words, when the interval between the straight tube portions 202 of the fluorescent lamp 20 is P and the interval between the straight tube portions 202 of the adjacent fluorescent lamps 20 is L, the position where P and L become equal is designed. In this embodiment, both P and L are set to be about 40 mm. Further, in the following description, the direction of the lamp holder refers to the direction of the center axis of the cylinder -11 - 201011202. In other words, it means the long axis direction of the portion held by the cylinder. As shown in Fig. 3, on the bottom surface of the casing 12, a pair of fluorescent lamps 20 and a pair of deviation absorbing holders 25 are disposed along the side plates 15b. Fig. 5 is a perspective view showing the deviation absorbing holder 25. Further, Fig. 6 is a cross-sectional view taken along line B-B' of Fig. 5. However, in Fig. 5, a part is omitted for display. As shown in Fig. 5, the deviation absorbing holder 25 has a straight tube insertion opening @ 25a. At the straight tube insertion opening 25a, one end of the straight tube portion 202 in which the electrode portion 201 is formed is inserted. At this time, the shape of the cross section (cross section) of the straight tube portion insertion opening 25a which is parallel to the reflection side portion 18a is a circular shape having a long axis in the y direction. The length of the long axis of the circle is formed to be longer than the manufacturing error of the position of the straight tube portion 202 in the y direction, thereby absorbing the positional deviation in the y direction of both end portions of the fluorescent lamp 20. Further, the length in the minor axis direction of the meandering circle orthogonal to the major axis is substantially equal to the outer diameter of the straight pipe portion 202. As shown in Fig. 6, the length L2 of the long hole of the straight pipe portion insertion opening 25a is As shown in FIG. 3, when the maximum deviation amount caused by the manufacturing error of the position of the front end of the straight pipe portion 902 is set to L3, it is formed longer than L3, so that both ends of the fluorescent lamp 20 can be absorbed. The positional deviation of the X direction. Thereby, the positional deviation of the straight tube portion 202 in the X direction is absorbed. Further, the arrows which are not assigned symbols in the X direction and the y direction shown in Figs. 3 and 5 show the direction in which the positional deviation in the direction indicated by the respective arrows is absorbed -12 - 201011202. The same is true in the subsequent figures. Here, the absorption of the positional deviation means that, for example, even if there is a deviation in the position of the straight pipe portion 202, the stress does not necessarily hold the straight pipe portion 202. The absorption of the deviation afterwards is the same. The lead wire 41 is connected to the electrode portion 20 1 of the straight tube portion 202 held by the deviation absorbing holder 25. The wire 41 has a length of the offset amount L3 of the complement. This wire 41 is led out to the outside of the deviation holding body 25 via the wire hole 25b formed downward from the straight pipe portion 25a. The derived lead wire 41 is connected to the external power source (not shown) by means of a harness 40 connected to the figure, and is provided with a plurality of deviation absorption holding bodies 25 as described above, and is disposed along the side plate 15b. The bottom of the frame 12. The respective biasing bodies 25 are arranged in the longitudinal direction of the straight tube insertion opening 25a. When the fluorescent lamp 20 is attached to the backlight device described above, the position of the bent portion 203 in the X direction and the position of the straight tube portion 202 in the y direction are mounted based on the positional reference when the fluorescent lamp 20 is placed. That is, first, the bent portion 203 is held by the first lamp, and the straight tube portion 202 is held by the second lamp holder 24-2. In this case, the order can also be simultaneous or individual. In this manner, the position in the X direction of the fixed flexure portion and the position in the y direction of one of the straight tube portions 202 are held at the end of the straight tube portion 022 in the deviation absorbing holder 25. After the holding is applied to the end of the receiving port, the above-mentioned insertion port absorbs the holding 203 of the quasi-implementing body 24-1, which is the difference of the absorption of the indication connection I 3 toward the X 11 , and then -13 - 201011202 As described above, according to the backlight device 1 of the first embodiment, the position of the bent portion 203 is set as the reference in the X direction, and the position of one straight tube portion 202 is set as the reference in the y direction, and the fluorescence is emitted. After the lamp 20 is placed inside the casing 12, the fluorescent lamp 20 is placed while absorbing the positional deviation of the lamp. Therefore, even if there is a manufacturing error in the fluorescent lamp 20, the position of the bent portion 203 in the X direction is placed at the designed position, and the position of the one straight pipe portion 022 in the y direction is also disposed. The location of the design. Therefore, the backlight device 11 can be uniformly illuminated. At this time, @the first lamp holder 24-1 holding the respective flexure portions 20 of the arranged fluorescent lamps 20 is placed on a straight line along the y direction, and the X of the buckling portion 203 of each lamp is set. Since the positions of the directions are the same, it is easy to suppress the design of the unevenness caused by the respective bent portions 203. Since one of the bent portion 203 and the straight tube portion 202 can be disposed at the designed position, the design of the device for uniformly emitting light can be easily performed. Specifically, the design of the light-emitting pattern sheet such as the design of the light-shielding pattern sheet between the diffusing plate 17 and the fluorescent lamp 20 provided on the light-emitting surface, the shape of the reflecting surface, and the adjustment of the reflectance @ of the surface are changed. It is not necessary to consider the positional deviation of the bent portion 203 and the straight tube portion 202, so that the design of the device is easy. Further, the deviation absorbing holder 25 can absorb the positional deviation of the straight tube portion 202 in the X direction and the y direction. Therefore, even if the length of the straight pipe portion 202 and the distance between the straight pipe portions 202 are deviated (miscible), no stress is applied to the straight pipe portion 202, and one end of the straight pipe portion 202 can be held. Therefore, it is possible to suppress breakage of the fluorescent lamp 20 due to vibration or the like. Further, by arranging at least one second lamp holder 24-2 from the boundary between the straight tube portion 202 and the flexure portion 203, the entire length L5 of the straight tube portion 202 is (L5) /2. In the field, it is easy to set the straight tube portion 202 to the position reference in the y direction, and even if the fluorescent lamp 20 is swung by vibration or the like, the straight tube portion 208 in the vicinity of the flexure portion 203 can be prevented from being damaged. Further, it is more preferable from the boundary between the straight pipe portion 202 and the buckling portion 203 to the field in which the full length L5 of the straight pipe portion 202 is (L5) /4. (Second Embodiment) Fig. 7 is an enlarged plan view showing the vicinity of one end of a bent portion 203 of the fluorescent lamp 20 and one end of a straight tube portion 202 having an electrode portion 201, showing the backlight device of the second embodiment. As shown in FIG. 7, the backlight device of the second embodiment differs from the backlight device of the first embodiment shown in FIG. 3 in that the straight tube portion 222 held by the second lamp holder 24-2 is held. The deviation at one end absorbs the retaining body. Here, in the following description, the deviation absorption holding body shown in Figs. 5 and 6 is referred to as a first deviation absorption holding body 25. In the second embodiment, the deviation absorbing holder for holding one end of the straight tube portion 202 held by the second lamp holder 24-2 is referred to as a second deviation absorbing holder 27. Fig. 8 is a perspective view showing the second deviation absorbing holder 27. As shown in Fig. 8, the second deviation absorbing holder 27 is different from the first deviation absorbing holder 25 in that the cross-sectional shape of the straight tube insertion opening 27a is circular. The straight tube insertion opening 27a is formed to have a diameter substantially equal to the outer diameter of the straight tube portion 202. In this way, the second deviation absorbing holder 27 absorbs the positional deviation in the x direction of the straight tube portion 022 held by the -15-201011202, and suppresses the positional deviation in the y direction. Therefore, the straight tube portion 2 2 can be absorbed. The positional deviation in the X direction is placed at the designed position while the position in the y direction is placed. The deviation absorption holding system in which one of the fluorescent lamps 20 is held and the first deviation absorption holding body 25 and the second deviation absorption holding body 27 are disposed along the side plate 15b of the casing 12 is disposed. In this case, the second deviation absorption holding body 27 is disposed such that the intervals of the straight tube portions 202 of all the fluorescent lamps 20 disposed inside the casing 12 are equal to each other. Even when the fluorescent lamp 20 is attached to the backlight device shown in Fig. 8, the fluorescent lamp 20 is mounted with the position of the bent portion 203 in the X direction and the position of the straight tube portion 022 in the y direction as an arrangement reference. In other words, first, the bent portion 203 is held by the first lamp holding body 24-1, and the straight tube portion 022 is held by the second lamp holding body 24-2. The order of the holding at this time may be performed simultaneously or individually. After the bent portion 203 and one end of the straight tube portion 202 are held in this manner, one end of one straight tube portion 202 is held by the second deviation absorbing holder 27, and the other straight tube portion 022 is One end is held by the first deviation absorption holder 25. Even in such a backlight device, light can be uniformly emitted in the same manner as the backlight device of the first embodiment. Moreover, it is easy to carry out a design for uniformly emitting light. In addition, since one end of one straight pipe portion 202 is held by the second deviation absorbing holder 27, and one end of the other straight pipe portion 202 is held by the first deviation absorbing holder 25, not only the fluorescent lamp 20 can be suppressed. The damage is also -16-201011202. It is possible to arrange the position of the one straight pipe portion 022 in the y direction more easily and accurately at the designed position. (Third Embodiment) Fig. 9 is an enlarged plan view showing a vicinity of one end of a bent portion 203 of the fluorescent lamp 20 and a straight portion 202 of the electrode portion 201, showing the backlight device of the third embodiment. Further, Fig. 10 is a cross-sectional view taken along line C-C' of Fig. 9. As shown in FIG. 9, the backlight device of the second embodiment differs from the backlight device of the second embodiment shown in FIG. 7 in that the first lamp holder 24-1 holding one fluorescent lamp 20 is provided. The second lamp holder 24-2 is formed at a predetermined position in the vicinity of both ends of the L-shaped holding plate 28. The position on the holding plate 28 of the first and second lamp holders 24-1 and 24-2 is a position designed in advance in response to the fluorescent lamp 20 to be held. As shown in Fig. 10, the first lamp holder 24-1 is formed on the pin 29 formed on the L-shaped holding plate 28. Although not shown, the second lamp holder 2 4-2 is similarly formed on the holding plate 28. Such a holding plate 28 is disposed on the bottom surface of the casing 12 by the arrangement pin 30. At this time, the holding plate 28 is disposed on the casing 12 such that the positions of the first lamp holder 24-1 and the second lamp holder 24-2 are the same as those of the backlight devices of the first and second embodiments. On the bottom surface. Even when the fluorescent lamp 20 is attached to the backlight device shown in Fig. 9, the position of the bent portion 203 and the position of one of the straight tube portions 202 are mounted as positional references when the fluorescent lamp 20 is placed. The specific mounting method is -17-201011202 using the same method as the backlight device of the second embodiment. Even in the backlight device of the third embodiment described above, it is possible to uniformly emit light similarly to the backlight device of the second embodiment. Moreover, it is easy to design for uniform illumination. Further, damage of the fluorescent lamp 20 can be suppressed. According to the backlight device of the third embodiment, since the first and second lamp holders 24-1 and 24-2 are formed at predetermined positions on the holding plate 28, the first and second lamp holders 24 are used. The positional arrangement of one of -1, 24-2 is configured in such a manner as to be the desired position, so that the position of the other party is also automatically determined. Therefore, it is easy to determine the arrangement reference of the fluorescent lamp 20. (Fourth Embodiment) The backlight device of the fourth embodiment is shown in an enlarged plan view showing the vicinity of the bent portion 203 of the fluorescent lamp 20 and the vicinity of one end of the straight tube portion 202 having the electrode portion 20 1 . Further, Fig. 12 is a cross-sectional view taken along line D-D of Fig. II. As shown in FIG. 11, the backlight device of the fourth embodiment differs from the backlight device of the third embodiment shown in FIG. 9 in the straight tube portion 202 held by the second lamp holder 24-2. Further, it is disposed in the third lamp holder 24-3 at the bottom of the casing 12 between the second lamp holding body 24-2 and the second deviation absorbing holder 27. Here, the second lamp holder 24-2 and the third lamp holder 24-3 are disposed in the same direction, and are disposed at positions equal to each other from the reflection side portion 18a. Further, at the bottom of the casing 12, the -18-201011202 of the other straight pipe portion 202 is disposed so that the deviation-absorbing type lamp holding body 31 is disposed so as to face the χ direction. The deviation-absorbing type lamp holder 31 is a positional deviation in the y direction capable of absorbing the other straight tube portion 022. The light-retaining-type lamp holding body 31 is different from the first lamp holding body 24-1 shown in Fig. 4 in that the cross-sectional shape of the cylindrical body is different as shown in Fig. 12 . That is, the deviation absorbing type lamp holding body 31 has a cylindrical body 32 having a circular cross section. The length of the long axis of the circle is at least the length of the outer diameter of the straight pipe portion 202 of the other side plus the maximum error allowed by the distance P between the straight pipe portions 202. Thereby, the positional deviation in the y direction of the other straight pipe portion 022 can be absorbed. When the fluorescent lamp 20 is attached to the backlight device shown in Fig. 11, the position of the bent portion 203 and the position of one of the straight tube portions 202 are mounted as positional references when the fluorescent lamp 20 is placed. In other words, first, the bent portion 203 is held by the first lamp holder 24_1, and one straight tube portion 202 is held by the second and third lamp holders 22-4 and 24-3. The order of retention at this time, ® can also be carried out simultaneously or individually. In this manner, after the position of the bent portion 203 and the one straight tube portion 202 are fixed, the other straight tube portion 202 is held by the deviation absorbing type lamp holding body 31. Finally, one end of one straight pipe portion 202 is held by the second deviation absorbing holder 27, and one end of the other straight pipe portion 202 is held by the first deviation absorbing holder 25. The backlight device of the fourth embodiment shown above can also emit light uniformly in the same manner as the backlight device of the third embodiment. Moreover, it is easy to design a uniform illumination. Moreover, it is easy to determine the arrangement standard of the fluorescent lamp 20. Further, damage of the fluorescent lamp 20 can be suppressed. -19-201011202 Further, according to the backlight device of the fourth embodiment, the one straight tube portion 208 is held by the third lamp holder 24-3, and the other straight tube portion 022 is held in the deviation absorbing type. In the case of the long fluorescent lamp 20 in which the length L5 of the straight tube portion 202 exceeds 400 mm, the occurrence of damage can be more effectively suppressed. Although the backlight device of the present embodiment has been described above, the present invention can be variously modified without departing from the scope of the invention, and can be modified, for example, as follows. ❾ The fluorescent lamp 20 is not limited to a cold cathode fluorescent lamp, but may be an external electrode fluorescent lamp (EEFL: External Electrode Fluorescent Lamp) or a hot cathode fluorescent lamp (HCFL: Hot Cathode Fluorescent Lamp). Further, the length, the diameter, the number of branches, and the like are not limited to the embodiment, and various modifications can be made. Further, as the fluorescent lamp 20, S-shaped fluorescent light having three straight pipe portions 022 which are substantially parallel and two bent portions 203 connecting the straight pipe portions as shown in Fig. 13 can be applied. Light 20. In this case, as shown in the figure, the straight pipe portion 202 located in the center may be used as a reference in the y direction. Further, as shown in Fig. 14, a W-shaped fluorescent lamp 20 having four straight pipe portions 202 which are substantially parallel and three bent portions 203 connecting the straight pipe portions can be applied. In this case, as shown in the figure, the flexion portion 2〇3 located in the center may be used as a reference in the X direction. Further, the bent portion 203 of the fluorescent lamp 20 is not limited to have the shape of the straight tube portion 203b, and may have a shape formed by an arc as shown in Fig. 15. The notch portions 24b-20 to 201011202 of the first lamp holder 24-1 and the second lamp holder 24-2 are not limited to being opened to the upper portion of the cylinder 24a, and may be formed to be open to the side portions. Further, as the first lamp holding body 24-1 and the second lamp holding body 24-2, as shown in Fig. 16, the bottom surface of the casing 12 may be disposed so that the interval between the projections 26b is larger than L4. Alternatively, it is possible to absorb a holding body larger than L4, which is about the positional deviation in the y-axis direction of the straight pipe portion 022 to be held. The first lamp holding body 24-1 can also be disposed at the bottom of the frame 12 by a plurality of pins 26a as shown in Fig. 17 and a cross-sectional view taken along line EE' of Fig. 17. In the configuration, at least two of the plurality of support pins 26a are in contact with the inner side of the bent portion 203, and at least one of the plurality of support pins 26a is in contact with the outer side of the bent portion 203. In the case of the first lamp holder 24-1, the bent portion 203 is disposed so as to be sandwiched between the pins 26a, and is held in contact with the pin 26a at a plurality of portions in the y direction of the bent portion 203. The contact portion between the fluorescent lamp 20 and the first lamp holder 24-1 can be dispersed. Therefore, it is possible to suppress a decrease in the local temperature of the fluorescent lamp 20 due to the contact, and it is possible to prevent the deflection of the buckling portion 203 of the mercury ® by the position in the X direction of the bent portion 203 as a reference. The first deviation absorbing holder 25 can be held even if the straight tube portion 202 has a length variation. Therefore, for example, it may be disposed at the bottom of the housing 12 as shown in FIG. The glass portion in the vicinity of the electrode 201 of the fluorescent lamp 20 is held as a member such as a socket that can absorb the positional deviation in the y direction and absorb the positional deviation in the X direction. In addition, even if the length of the straight pipe portion 202 and the interval P between the straight pipe portions 202 are different, the second deviation absorption holding body 27 can be held by -21 to 201011202. Therefore, for example, as shown in FIG. Such a lamp is disposed at the bottom portion of the casing 12 and holds the glass portion in the vicinity of the electrode 201 of the fluorescent lamp 20 so that the positional deviation in the y direction can be suppressed, and the lamp connected to the electrode 201 can be absorbed in such a manner as to absorb the positional deviation in the X direction. Such a component. As the L-shaped holding plate 28 in which the first lamp holding body 24·1 and the second lamp holding body 24-2 of the third embodiment are disposed, the length in the y direction as shown in FIG. 21 may be used to exceed the straight pipe portion. Interval between 202 P - a half length P/2 member. In this case, the area of the triangle formed by the first lamp holding body 24-1 and the second lamp holding body 2 4-2 and the pin 30 increases. Therefore, it is possible to enhance the balance of the lamp when the bending portion 203 and the straight tube portion 20 2 are held, and it is possible to reduce the shaking of the lamp caused by the punching, the vibration, and the like, thereby suppressing the breakage of the lamp. Further, as shown in Fig. 22, a three-shaped retaining plate 34 having two first lamp holders 24-1 at both ends and two second lamp holders 24-2 therebetween may be provided. In this case, by the holding plate 34, the straight tube portion 02 adjacent to the two fluorescent lamps 20 can be held and the respective bending portions 20 3 can be held, so that @ can be used more than the holding plate 28 of Fig. 20 By maintaining the balance of the lamp, it is possible to reduce the sway of the lamp caused by the smashing, vibration, etc., thereby suppressing the rupture of the lamp. Further, here, the holding plate 34 can reduce the variation in the central luminance of the backlight unit 11. In other words, in the use of a liquid crystal television or the like, a high central luminance is required. However, it is possible to hold the adjacent straight tube portion 02 of the two fluorescent lamps 20 by the two second lamp holders 24-2. The center of the backlight device 11 in the y direction is designed as a reference. This is particularly effective in the case where two fluorescent lamps 20 are used. -22- 201011202 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded perspective view showing a backlight device of the present invention. Fig. 2 is a top view of the backlight device of the first embodiment shown in Fig. 1; Fig. 3 is an enlarged view of the backlight device of the first embodiment shown in Fig. 2; Figure 4 is a cross-sectional view taken along line A-A' of Figure 3 . Fig. 5 is a perspective view showing the first deviation absorption holding body. Figure 6 is a cross-sectional view taken along line B-B' of Figure 5 . Fig. 7 is an enlarged view of a backlight device of a second embodiment. Fig. 8 is a perspective view showing the second deviation absorbing holder. Fig. 9 is an enlarged view of a backlight device of a third embodiment. Fig. 1A is a cross-sectional view taken along line C-C' of Fig. 10. Fig. 11 is an enlarged view of a backlight device of a fourth embodiment. Figure 12 is a cross-sectional view taken along line D-D' of Figure 11 . Fig. 13 is a view showing a first modification of the fluorescent lamp. Fig. 14 is a view showing a second modification of the fluorescent lamp. Fig. 15 is a view showing a third modification of the fluorescent lamp. Fig. 16 is an enlarged view showing a first modification of the lamp holder. Fig. 17 is a view showing a second modification of the lamp holder. Figure 18 is a cross-sectional view taken along line E-E' of Figure 17. Fig. 19 is a perspective view showing a modification of the first deviation absorbing holder. Fig. 20 is a perspective view showing a modification of the second deviation absorbing holder. -23-201011202. Fig. 21 is a view showing a first modification of the holding plate. Figure. Fig. 22 is a view showing a second modification of the holding plate. [Description of main component symbols] 1 1 : Backlight device 12 : Frame 13 : Front frame 1 4 : Rear frame _ 1 5 a, 1 5 b : Side plate 1 6 : Optical sheet 1 7 : Diffuser 1 8 : Bottom reflector 18a: reflection side portion 19: side reflection plate 20: buckling type fluorescent lamp 201: electrode portion © 202: straight tube portion 203: flexion portion 203a: straight tube portion 203b of the bent portion: two of the straight tube portion 203a End flexure 24-1: first lamp holder 24a: cylinder 24b: notch 24c ··pin-24- 201011202 24-: 24-: 25: 25a 25b 26a 26b 〇2 7 : 27a 28, 29 : 30 : 3 1: 32 : :: 2nd lamp holder; 3rd lamp holder 1st deviation absorption holder: Straight tube insertion port = wire hole • Pin: Pair of protrusion 2nd deviation absorption holder: Straight pipe insertion port 34: retaining plate pin fixing pin deviation absorption type lamp holding body 楕 round cylinder
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