A7 1258786 五、發明說明（/ ) [技術領域] 本發明係關於一種電視顯像機、電腦監視器等所使用 之蔭罩型之陰極射線管。 [背景技術] 習知之彩色陰極射線管的一例之截面圖係如圖18所示 。本圖所示之彩色陰極射線管1，具備：實質長方形狀之 面板2，其內面形成有螢光幕面2a ;玻錐3，其連接於面 板2之後方；電子槍4，係內藏於玻錐3之頸部3a ;蔭罩6 ，在面板2之內部與螢光幕面2a對向所設之；以及，框架 7，係用以固定蔭罩6。又，爲了進行電子束之偏向掃描， 於玻錐3之外周面上係設有偏向軛5。 蔭罩6係扮演相對於電子槍4所發射之3條電子束做 色分選的角色，在平板上藉蝕刻形成多數之大致長條形的 開孔作爲電子束通過孔。A係顯示電子束軌跡。 固定著蔭罩6的板狀構件之框架7，其長方向之兩端 部係固定著作爲框架7支撐體的一對框架8。該等之一對 的框架7與一對的框架8形成了框狀體。此框狀體與固定 其上之蔭罩6係形成蔭罩構體9。 在一對之上下框架7係固定著板狀之彈簧裝設構件21 ，此彈簧裝設構件21係固定著彈簧構件10。於一對之左 右框架8係固定著板狀之彈簧裝設構件11，此彈簧裝設構 件11係固定著彈簧構件12。 蔭罩構體9之對於面板2的固定係藉由彈簧構件1〇之 安裝孔10a與面板2內面之上下的銷13的嵌合、以及彈簧 3 --------------------訂---------線 (請先閱讀背面之注咅3事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 一 " A7 1258786 五、發明說明（工） 構件12之安裝孔12a與面板2內面左右的銷(未予圖示)的 嵌合來進行。 在彩色陰極射線管中，因電子束之突射所造成之蔭罩 6的熱膨脹會使得電子束通過孔位移，於是通過電子束通 過孔的電子束無法正確地照射到既定之螢光體，而發生色 斑之所謂的隆起現象。是以，在做法上乃事先施加可吸收 溫度上升所導致之熱膨脹的拉伸力，讓蔭罩6架設保持於 框架7上。藉由此種方式的架設保持，即使蔭罩6的溫度 上升，也可減低蔭罩6之開孔與螢光幕面2a之螢光體條紋 的相互位置的偏差。 惟，前述之習知彩色陰極射線管存在著以下的問題。 一旦電子束突射於呈架設保持狀態的蔭罩6產生熱膨脹， 造成拉伸力的變小，則蔭罩構體9之內力力矩也會變小， 平衡狀態從而變動。此平衡狀態的變動，會產生蔭罩6之 開孔與螢光幕面2a間之距離(q値)的偏差，也就是產生蔭 罩6在管軸方向的位偏，電子束將不能正確地打到螢光體 ，從而發生色斑，此爲問題所在。 即使藉由前述般之蔭罩的架設保持，也無法充分地防 止此種蔭罩6在管軸方向的位偏所造成之色斑。 [發明之揭示] 本發明係用以解決上述習知問題所得者，其目的在於 提供一種陰極射線管，其可抑制蔭罩在管軸方向的位偏， 從而防止色斑現象。 爲了達成前述目的，本發明之陰極射線管，係具備： 4 --------------------訂---------線 (請先閱讀背面之注意事項再填寫本頁) 尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） ""' 1258786 A7 _ B7___ _ 五、發明說明（二） 一對之板狀構件、一對之支撐體(在前述一對之板狀構件呈 對向之狀態下與前述各板狀構件固接來支撐前述各板狀構 件）、以及蔭罩（在被施加拉伸力的狀態下固接於前述各板 狀構件）；其特徵在於，前述支撐體具有曲柄狀之高低差部 分（以在前述蔭罩側成爲突起的方式所形成者）。依據前述 陰極射線管，可減低蔭罩構體之內力力矩，所以即使電子 束突射造成蔭罩之熱膨脹，仍可抑制蔭罩在管軸方向之位 移，q値偏差也可被抑制。又，藉由曲柄狀的高低差部分 ’能以鐵系材料來遮蔽橫方向之空隙，所以可改善磁氣特 性。 於前述陰極射線管中，較佳爲··前述支撐體在前述板 狀構件之長方向具有自端部到達內側之延伸部，並將前述 延伸部之端部與前述板狀構件加以固接，藉此，前述支撐 體之進入前述板狀構件之長方向內側之部分被固接著。依 據前述之陰極射線管，蔭罩之拉伸力分布可輕易地設成山 型，蔭罩之振動可由蔭罩之自由端部所輕易抑制。又，此 時雖受到蔭罩之熱膨脹的影響，支撐體的變動會增大，但 應力會由進入內側之部分所吸收，對於支撐體之裝設有彈 簧構件（用以支撐住支撐體）之軸上的應力可獲得減輕。是 以，減低蔭罩構體之內力力矩的效果將更爲有效。 又，於前述支撐體進一步固接彈簧裝設構件(位於前述 曲柄狀之高低差部分所形成之凹陷部分，用以支撐前述支 撐體），且於前述彈簧裝設構件固接著彈簧構件，於前述彈 簧構件形成有用以插入安裝銷的安裝孔，前述安裝孔的中 5 k ‘張尺用中國國家標準（CNS)A4規格（210 X 297公愛) ' ^ --------------------訂---------線 (請先閱讀背面之注意事項再填寫本頁) A7 1258786 ............................_B7_ 一一 五、發明說明（…） 心點相對於固接著前述板狀構件之部分的前述支撐體之位 置，係位於前述蔭罩側之相反側乃爲所希望的。依據前述 之陰極射線管，由於可減少在板狀構件上面所施加之蔭罩 拉伸力之反作用力所造成之支撐構件之力矩的變化’乃可 減輕板狀構件上面之管軸方向的位移量。 又，於前述支撐體固接著彈簧構件(位於前述曲柄狀之 高低差部分所形成之凹陷部分或是凹陷部分的外部’用以 支撐前述支撐體），且於前述彈簧構件形成有用以插入安裝 銷的安裝孔，前述安裝孔的中心點相對於固接著前述板狀 構件之部分的前述支撐體之位置位於前述蔭罩側之相反側 乃爲所希望的。依據前述之陰極射線管，由於彈簧構件係 直接裝設於支撐體上，乃無須彈簧裝設構件。 又，前述曲柄狀之高低差部分在前述支撐體之長方向 上，具有形成爲直線狀之部分乃爲所希望的。依據前述之 陰極射線管，用以將固接著蔭罩之蔭罩構體裝設到面板之 構件可輕易地裝設至支撐體。 又，在前述曲柄狀之高低差部分當中，往前述蔭罩側 偏移之部分的中軸係位於前述蔭罩之面的上側乃爲所希望 的。依據前述之陰極射線管，由於蔭罩會隨著熱膨脹而往 螢光幕面接近，所以可得到色偏修正效果。 又，前述曲柄狀之高低差部分的彎曲部分係形成爲圓 弧狀，前述圓弧的內周側之曲率半徑爲20mm以上乃爲所 希望的。依據前述之陰極射線管，可防止彎曲部分之過度 的應力集中，可確保充分的剛性。 6 尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 一 --------------------訂---------^ ^_wl (請先閱讀背面之注意事項再填寫本頁) 1258786 五、發明說明（r) 又，支撐調整構件係經由在前述曲柄狀之高低差部分 所形成之凹陷部分以與前述支撐體對向的方式進一步固接 著乃爲所希望的。依據前述之陰極射線管，除了減低力矩 變化之效果外，尙有支撐體之剛性提升的效果。此時，由 於截面2次力矩的增加，所以用於支撐體之鋼材的截面尺 寸可降低至次級之物。再者，可進一步抑制電子束突射時 之蔭罩在管軸方向的位移。 再者，相較於支撐體在管軸方向之軸周圍的截面2次 力矩，水平方向之軸周圍的截面2次力矩變得較大，所以 支撐體在管軸方向之位移受到抑制的同時，水平方向的位 移則是增加了，所以可利用此水平方向的位移來進行管軸 方向的修正。 又，於前述支撐調整構件進一步形成可減低前述支撐 調整構件在長方向之彈簧常數的突起乃爲所希望的。依據 前述之陰極射線管，由於陰極射線管動作時支撐調整構件 可緩和將支撐體壓縮之方向的力，所以可減低蔭罩在管軸 方向之位移。 又，前述支撐調整構件在長方向之彈簧常數係1.47X 104N/mm以下乃爲所希望的。 又，前述支撐調整構件之熱膨脹係數較前述支撐體爲 大爲所希望的。依據前述之陰極射線管，可防止熱處理製 程中之蔭罩的塑性變形。再者，可抑制陰極射線管之動作 時的管軸方向之位移。 又，前述支撐調整構件之熱膨脹係數爲前述支撐體之 7 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） --------------------訂---------線 (請先閱讀背面之注意事項再填寫本頁) 1258786 五、發明說明（L) 熱膨脹係數的1.2倍以上乃爲所希望的。 又，熱膨脹係數較前述支撐體爲小的支撐調整構件係 固接於前述曲柄狀之高低差部分當中，往前述蔭罩側偏移 之部分的表面乃爲所希望的。依據前述之陰極射線管，可 防止熱處理製程中之蔭罩的塑性變形。 又，前述內部磁氣屏蔽係隔著絕熱材而固接於前述支 撐調整構件乃爲所希望的。依據前述之陰極射線管，可抑 制自支撐體往內部磁氣屏蔽之熱傳送，可抑制內部磁氣屏 蔽之放熱效果，所以可讓支撐體與支撐調整構件在相同的 溫度下安定化。藉此，可讓電子束移動量安定，可謀求色 偏防止。 又，內部磁氣屏蔽係固接於前述支撐調整構件，前述 內部磁氣屏蔽與前述支撐調整構件的接觸面積係前述支撐 調整構件之單面面積的25%以下乃爲所希望的。依據前述 之陰極射線管，由於內部磁氣屏蔽與支撐調整構件之接觸 面積小，可抑制自支撐體經由支撐調整構件傳往內部磁氣 屏蔽的熱傳送，可抑制內部磁氣屏蔽之放熱效果，所以可 讓支撐體與支撐調整構件在相同溫度下安定化。藉此，可 讓電子束移動量安定化，可謀求色偏防止。 又，前述內部磁氣屏蔽與前述支撐調整構件的接觸面 積係前述支撐調整構件之單面面積的5%以下乃爲所希望的 。依據前述之陰極射線管，由於可更確實地抑制自支撐體 經由支撐調整構件傳往內部磁氣屏蔽的熱傳送，乃能更確 實地防止色偏。 8 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） --------------------訂---------線 (請先閱讀背面之注意事項再填寫本頁) A7 1258786 五、發明說明（1 ) (請先閱讀背面之注意事項再填寫本頁) 又，於前述內部磁氣屏蔽與前述支撐調整構件之間夾 設熱傳導率較前述內部磁氣屏蔽與前述支撐調整構件爲低 之構件乃爲所希望的。依據前述之陰極射線管，可更確實 地抑制自支撐體經由支撐調整構件傳往內部磁氣屏蔽的熱 傳送。 又，前述熱傳導率低的構件之材料以SUS304爲佳。 又，前述內部磁氣屏蔽係透過在前述內部磁氣屏蔽與 前述支撐調整構件中之至少一者所形成之突起部來接合於 前述支撐調整構件，前述接觸面積係前述突起部之接合面 積乃爲所希望的。依據前述之陰極射線管，內部磁氣屏蔽 與前述支撐調整構件可更容易且更確實地接合，可減少內 部磁氣屏蔽與支撐調整構件之接觸面積。 [圖式之簡單說明] 圖1係關於本發明之一實施形態之彩色陰極射線管的 截面圖。 圖2係關於本發明之實施形態1之蔭罩構體的立體圖 〇 圖3係關於本發明之實施形態2之蔭罩構體的立體圖 〇 圖4A所示係關於習知之蔭罩構體之力矩的施加狀氣 之一例之圖。 圖4B所示係與本發明之一實施形態之蔭罩構體有關 之力矩的施加狀態圖。 圖5所示係與本發明之其他實施形態之蔭罩構體有關 9 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） A7 1258786 五、發明說明（Ρ ) 之力矩的施加狀態圖。 圖6係有關本發明之實施形態3之蔭罩構體的立體圖 〇 圖7A所示係陰極射線管動作時之框架與支撐調整構 件之時刻一溫度關係圖。 圖7B所示係陰極射線管動作時之時刻一電子束移動 量關係圖。 圖8所示係內部磁氣屏蔽之一例的立體圖。 圖9係有關本發明之實施形態4之蔭罩構體之立體圖 〇 圖10係內部磁氣屏蔽與蔭罩構體呈接合狀態下之圖9 的A箭頭圖。 圖11係內部磁氣屏蔽與蔭罩構體呈接合狀態下之圖9 的I一I線之截面圖。 圖12A係顯示較圖7之時刻tl爲前之狀態下陰極射線 管動作時之框架的位移狀態圖。 圖12B係顯示較圖7之時刻tl爲後之狀態下陰極射線 管動作時之框架的位移狀態圖。 圖13A係有關本發明之一實施形態之形成用以降低彈 簧常數之突起所得之支撐調整構件的一例之側視圖。 圖13B係有關本發明之一實施形態之形成用以降低彈 簧常數之突起所得之支撐調整構件的另一例之側視圖。 圖13C係有關本發明之一實施形態之形成用以降低彈 簧常數之突起所得之支撐調整構件的又一例之側視圖。 10 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） ' 職 --------------------訂---------線 (請先閱讀背面之注意事項再填寫本頁) A7 1258786 五、發明說明（I) 圖14A係相關於內部磁氣屏蔽與支撐調整構件的接合 之實施例1的立體圖。 (請先閱讀背面之注意事項再填寫本頁) 圖14B係圖14A之Π — Π線的截面圖。 圖15A係相關於內部磁氣屏蔽與支撐調整構件的接合 之實施例2的立體圖。 圖15B係圖15A之ΠΙ — Π線的截面圖。 圖16Α係相關於內部磁氣屏蔽與支撐調整構件的接合 之實施例3的立體圖。 圖16Β係圖16Α之IV — IV線的截面圖。 圖17Α所示係與本發明之實施形態6相關之陰極射線 管動作時之框架與支撐調整構件之時刻一溫度關係圖。 圖17Β所示係與本發明之實施形態6相關陰極射線管 動作時之時刻一電子束移動量關係圖。 圖18係習知之彩色陰極射線管之一例的截面圖。 [用以實施發明之最佳形態] 以下參照圖式來說明本發明之一實施形態。與習知例 爲同一構成之物係附以同一符號來說明。 (實施形態1) 圖1係關於本發明之實施形態1之彩色陰極射線管的 截面圖。圖2係圖1之蔭罩構體16的立體圖。在圖2中係 省略了蔭罩6之圖示。 作爲板狀構件之框架7的支撐體之框架14具有彎曲部 分’此彎曲部分係形成曲柄狀之高低差部分。此曲柄狀之 问低差部分中之面14b相對於面14a係位於蔭罩6側，在 11 本紙張尺度適用中關家標準（CNS)A4規格（210 X 297公® ) ' A7 1258786 五、發明說明（K:) 面14a與面14b之間形成有高低差15。 (請先閱讀背面之注意事項再填寫本頁) 於上下之框架7的各兩端部，左右之框架14係以熔接 等固接著，而形成爲框狀體(圖2)，此框狀體當中之框架7 上面係固接著蔭罩6而形成蔭罩構體16。於一對之上下框 架7係固定著板狀之彈簧裝設構件21，於此彈簧裝設構件 21固定著彈簧構件10。於一對之左右框架14係固接著板 狀之彈簧裝設構件11，於此彈簧裝設構件Η固接著彈簧 構件12。藉此，彈簧構件12之安裝孔12a會位於框架14 之長方向的大致中央部。又，框架14之曲柄狀部分當中之 面14b的形成部分在框架14之長方向以直線狀形成，所以 彈簧裝設構件11之裝設乃容易。蔭罩構體16對面板2之 固定也與圖18之情況相同，將彈簧構件10之安裝孔l〇a 與面板2內面之上下的銷13加以嵌合，並將彈簧構件12 之安裝孔12與面板2內面之左右的銷(未予圖示)加以嵌合 來進行。 圖4係用以比較對蔭罩構體所施加之力矩的圖，分別 顯示蔭罩構體之側面的一部分。圖4A係圖18所示之習知 例的情況之構成，圖4B係圖1所示之本實施形態的情況之 構成。圖中之z軸方向與管軸方向相等，往上側之方向係 定爲正。 不論是何種圖的情況，蔭罩6都是架設保持在框架7 之上面7a，蔭罩6在箭頭a方向被施加拉伸力。若將蔭罩 6之拉伸力當作F，則在框架7之上面7a，與拉伸力F爲 相同大小之反作用力F會施加於箭頭方向(上面7a往內側 12 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 1258786 五、發明說明（ί丨） 傾倒）。又，彈簧構件12係厚度lmm左右之物，蔭罩6之 熱膨脹所導致之力矩變化全由組裝於框狀體之各框架所決 定。 若就各圖中之反作用力F所產生之力矩來硏究，則圖 4A所示之習知例之情況，反作用力F在框體8之中軸上的 中心點(A點)周圍的力矩Μ，當上面7a到中軸的最短直線 距離爲L時’會成爲M=FxL。亦即，在圖4A所示之狀態 下，會在框架7之上面7a的反作用力F所產生之A點周圍 的力矩Μ被施加的狀態下保持平衡狀態。 原本之平衡狀態，會因爲蔭罩6的熱膨賬使得拉伸力 F變小，於是框架7之上面7a的反作用力F所產生之Α點 周圍的力矩Μ也會變小，結果平衡的狀態也會變化。在圖 4Α的情形，因爲熱膨脹造成拉伸力F之降低，會自一點鏈 線所表示之位置往實線的位置移動，在此狀態下再度保持 平衡狀態。亦即，熱膨脹會造成框架7之上面7a往ζ軸之 負方向位移Δζ ◦實際上由於框體8受到彈簧構件12之安 裝孔12a的限制，所以成爲往ζ軸之負方向位移ΔΖ。 其次，就圖4Β所示之本實施形態的情況來硏究，則 反作用力F所產生的Α點周圍的力矩ΜΓ，當上面7a到框 架14c之中軸的最短直線距離爲1/時，會成爲M^FxL'。 在本實施形態，框架14之面14b相對於面14a係位於ζ軸 之正方向(亦即蔭罩6側）。從而，A點也往ζ軸之正方向位 移。是以，由於距離L'相較於距離L短了高低差15之程 度’故L'<L，M，<M的關係會成立。 13 本紙張尺度適用中國國家標準（CNS)A4規格（21〇 χ 297公釐） (請先閱讀背面之注意事項再填寫本頁) 參 訂---------線· 1258786 五、發明說明（丨 亦即，在圖4Β所示之狀態下，會在被施加較Μ爲小 的力矩Μ'的狀態下保持平衡狀態。與圖4Α之情形同樣， 一旦蔭罩6的熱膨脹使得拉伸力F變小，則力矩Μ'也會變 小，結果平衡的狀態也會變動。在本圖的情形，因爲拉伸 力F之降低，會自一點鏈線所表示之位置往實線的位置移 動，在此狀態下再度保持平衡狀態。此時，如一點鏈線所 示般撓曲之框架14會如受到解放般移動。亦即，受到熱膨 脹之影響，框架7之上面7a會往ζ軸之負方向位移Δζ'。 此處，上述拉伸力之變動所造成之ζ軸方向的位移量 係與發生框架14之撓曲的框架7之上面的反作用力所產生 之Α點周圍的力矩成正比。如前所述，依據本實施形態， 由於框架7之上面7a的反作用力所產生之A點周圍之力矩 較小，所以可減低框架14之撓曲的變化量而減小框架7之 上面7a在ζ軸方向的位移量。亦即，即使電子束突射造成 蔭罩6的熱膨脹，仍可抑制蔭罩6之管軸方向(ζ軸方向)的 位移，q値偏差也可抑制。 在圖4B所示之實施形態，框架14之面14b相對於面 14a係往ζ軸之正方向偏移，面14b相較於蔭罩6之面位於 下側。圖5所示之實施形態，框架20之面20a與面20b之 間的高低差較圖4B的情況來得大，面20b係進一步往ζ軸 之正方向偏移，面20b相較於蔭罩6之面係位於上側。 依據本實施形態，框架20之中軸上的中心點(A點)與 圖4B所示之實施形態情況不同，其相較於蔭罩6之面係位 於上側，所以A點周圍之力矩Μ的方向變成反向。是以， 14 ^ _________ ____________ (請先閱讀背面之注意事項再填寫本頁) IAW --------訂--------- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） A7 1258786 五、發明說明（ I 4 ) 蔭罩6之熱膨脹所導致之框架7之上面7a的位移方向變成 相反(z軸之正方向）。如此，蔭罩6往z軸之正方向位移， 會使得蔭罩6往螢光幕面2a側接近，於是可得到色偏修正 效果。 又，圖4B所示之框架14在蔭罩6之架設保持之際係 施加壓縮力，於架設保持之後，被施以前述般之A點周圍 的力矩，所以需要不致發生塑性變形程度之一定的剛性。 是以，曲柄狀部分之圓弧狀的彎曲部分14c、14d之內周側 的曲率半徑以20mm以上爲佳，30mm以上爲更佳。此條件 在圖5的情況以及下面所說明之圖3所示之實施形態的情 況也是同樣的。 (實施形態2) 圖3係顯示有關實施形態2之蔭罩構體的實施形態。 在本圖中有關蔭罩6之圖示被省略。本圖所示之蔭罩構體 17與圖2所示之框狀體同樣，作爲板狀構件之框架7的支 撐體的框架18具有彎曲部分，此彎曲部分形成了曲柄狀的 高低差部分。此曲柄狀之高低差部分之面18b相對於面18a 係位於蔭罩6側，於面18a與面18b之間形成高低差。 框架18在框架7之長方向具有自端部延伸到內側之延 伸部18c，藉由將延伸部18c之端部與框架7加以固接，延 伸部18c之端部會於進入框架7之長方向的內側之部分以 熔接等來固接。是以，於框架7之兩端部分，框架7與框 架18係呈分離狀態。 於本圖所示之實施形態的情況也與圖2所示之實施形 15 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） ---------------------訂---------線 (請先閱讀背面之注咅？事項再填寫本頁) 1258786 五、發明說明（Id) 態的情況相同，可減低框架7之上面7a的反作用力所產生 之A點周圍之力矩，減低框架18之撓曲變化，即使蔭罩6 發生熱膨脹，仍可抑制蔭罩6之管軸方向的位移，Q値偏 差也可抑制。 只要使用本圖所示之蔭罩構體17,可輕易地將在框架 7之長方向之蔭罩6之拉伸力的分布做成山型，能以蔭罩 之自由端部來輕易控制蔭罩的振動。此時，因蔭罩6之熱 膨脹造成拉伸力變小的情況，相較於圖2所示之蔭罩構體 16，短軸之框架18的移動會變大。惟，以進入內側之延伸 部18c來吸收應力，可減輕對框架18上之安裝彈簧構件12 之軸上的應力。是以，在本實施形態如前述般減少A點周 圍之力矩的效果可更爲有效。 以使用了圖1所示之本實施形態的蔭罩構體之實施例 與使用了圖18所示之習知之蔭罩構體的習知例來比較電子 束照射時之電子束移動量的實驗結果係示於以下的表丨、2 (請先閱讀背面之注意事項再填寫本頁) .· 訂---------線· 表1 EW端部 角落部 習知例 外 1 5 // m 外 20 // m 實施例 外 5 // m 外 7 // m 表2 EW端部 角落部 習知例 外 200 // m 外 130 // m 實施例 外 100// m 外 90 // m 16 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 1258786 五、發明說明（G) 表1係電子束照射於蔭罩全體之情況的實驗結果，表 2係電子束局部照射於蔭罩的情況的實驗結果。表2的情 形係於蔭罩之左右兩端部照射電子束，照射到電子束之部 分的面積分別相當於蔭罩面積的1/5。 於表1、2中所說的EW端部係指蔭罩左右之兩端部， 由蔭罩之表面側來看，右側爲E端部、左側爲w端部。在 實驗結果中，所謂的外係電子束在螢光面往外側移動之意 思。又，不論是表1、2的任一情況，電子束量係定爲 Ia=1650 " m 〇 蔭罩愈往管軸之負方向（自螢光面遠離之方向）位移， 電子束於螢光面會愈往外側移動，而表1、2所示之實施例 中可發現電子束往外側之移動量皆大幅地減少，蔭罩在管 軸方向之位移獲得大幅的減低。 (實施形態3) 圖6係顯示有關實施形態3之蔭罩構體的立體圖。在 本圖中，蔭罩6之圖示係予以省略。本實施形態係在圖2 所示之實施形態的框架14上固接著支撐調整構件22。如 本圖所示般，支撐調整構件22係透過由曲柄狀之高低差部 分所形成之凹陷部分與框架14對向般所配置者，支撐調整 構件22之兩端部係固接於框架14之裏面。 藉此，短軸之框架14的剛性提升，可得到與矩形截面 同樣的效果。尤其，相較於管軸方向之軸(軸27)周圍的截 面2次力矩，水平方向之軸(軸28)周圍的截面2次力矩變 大’所以框架14相對於長方向之彎曲的強度獲得提升。亦 17 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） --------------------訂---------線 (請先閱讀背面之注意事項再填寫本頁) A7 1258786 五、發明說明（士） 即，在本實施形態，係於圖2、3之實施形態的減小力矩變 化的效果外又加上框架14之剛性提升的效果。 是以，相較於圖2、3之實施形態，可進一步抑制電子 束突射時之短軸的力矩變化所產生之蔭罩在管軸方向的位 移。又，藉由前述般之剛性提升的效果，截面2次力矩得 以增加，所以用於支撐體之鋼材的截面尺寸可選用更下階 者。 再者，如前所述，以框架14而言，相較於管軸方向之 軸(軸27)周圍的截面2次力矩，水平方向之軸(軸28)周圍 之截面2次力矩變得較大，所以框架14在管軸方向(軸27 方向)之位移雖受到抑制，但在水平方向(軸28方向)之位移 則增加。當框架14在水平方向當中框架14往外側擴張的 方向動作的情況，亦可使用固定於框架14之板狀的彈簧， 讓框架14往管軸方向位移。亦即，亦可利用框架14之水 平方向的位移，來進行管軸方向的修正。 (實施形態4) 在實施形態4，爲了得到更新的效果，所以支撐調整 構件的材料係選用較支撐調整構件所固接之短邊框架有更 大之熱膨脹係數的材料，若短邊框架爲鐵材，則支撐調整 構件係使用例如SUS304。 藉此，在本實施形態，可防止在玻璃料密封(frit seal) 製程等之高溫區域的熱處理之際，蔭罩因短邊框架而受到 過度拉伸所發生之蔭罩的塑性變形、以及熱潛變現象所導 致之拉伸力的降低。 18 (請先閱讀背面之注意事項再填寫本頁) · 訂---------線· 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 1258786 A7 R7 五、發明說明υΊ) 亦即，在此高溫狀態下，由於短邊框架與支撐調整構 件在熱膨脹係數上的差，例如圖6所示的例子中，短邊框 架14會如箭頭c所示般彎曲成凹狀，對於蔭罩而言會成爲 往緩和架設方向之拉伸力的方向施加力量的情況，所以溫 度上升對蔭罩所施加之拉伸力乃受到減低。 如前所述，將支撐調整構件設定成較短邊框架有更大 之熱膨脹係數，則可防止在玻璃料密封製程等之生產製程 中於高溫區域之熱蔭罩的塑性變形，不過此以方式設置熱 膨脹係數的差，也會抑制陰極射線管之動作時之管軸方向 的位移。關於此情況，可參照圖7〜12來說明。圖7所示係 陰極射線管動作時之短邊框架與支撐調整構件之時刻一溫 度關係圖。線23係顯示短邊框架之時刻一溫度關係圖，線 24係顯示支撐調整構件之時刻一溫度關係圖。 圖8所示係內部磁氣屏蔽之立體圖。本圖所示之內部 磁氣屏蔽30，具有：自本體30a所延伸之溶接用的平面部 31、以及此平面部31彎曲所形成之裙擺部32。本體30a係 以包圍電子束移動部的方式形成爲箱狀。圖9係蔭罩構體 之一實施形態的立體圖。本圖所示之蔭罩構體33之基本構 成與圖6所示者相同，於板狀構件之長邊框架34固接著作 爲支撐體之短邊框架35，於各長邊框架34固接者蔭罩36 。進一步於短邊框架35固接著支撐調整構件37。 在本圖中，係將支撐調整構件37當作表面來圖示，而 圖8所示之內部磁氣屏蔽30則是以裙擺部32側被覆於蔭 罩構體33的方式來安裝，並將內部磁氣屏蔽30之平面部 19 (請先閱讀背面之注意事項再填寫本頁) -1^^^^ ·1111111 一=0, ·11111111 . 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 1258786 五、發明說明（；/) 31熔接於蔭罩構體33之支撐調整構件37，藉以讓雙方相 互固定。例如讓圖8所示之平面部31之熔接點38與圖9 所示之支撐調整構件37之熔接點39重合來熔接。 圖10係內部磁氣屏蔽3〇與蔭罩構體33在接合狀態下 之A箭頭(圖9)之圖。在本圖中，內部磁氣屏蔽之裙擺 部32的圖示之一部分被省略，而可看出平面部31與支撐 調整構件37接合之情況。圖11係內部磁氣屏蔽30與蔭罩 構體33呈接合狀態之I 一 I線(圖9)的截面圖。如本圖所 不，於內部磁氣屏蔽30係接合者電子屏蔽40。 受到陰極射線管之動作的影響，如圖11之箭頭iJ所 示般，自電子槍發射電子束，陰極射線管內部之溫度開始 上升。在構造上，由於電子束係以蔭罩36之有效面積的 110%來掃描，所以超過有效面積之電子束當中單側程度約 5%的電子束會分別突射於兩端部之電子屏蔽40(箭頭i)。 從而，在陰極射線管之動作不久後，電子束會突射於電子 屏蔽40以及蔭罩36。 此處，由於電子屏蔽40係以熔接於內部磁氣屏蔽30 的方式受到接合，所以一旦電子束突射到電子屏蔽40 ’內 部磁氣屏蔽30之溫度也會上升。若內部磁氣屏蔽30之溫 度上升，則與其熔接所接合之支撐調整構件37的溫度也會 上升。在此階段短邊框架35之溫度並未上升到接近支撐調 整構件37之溫度。顯示著此狀態的圖係圖7之較時刻tl 爲前面之狀態，在時刻tl之前，支撐調整構件37之溫度 係較短邊框架35來得高。 20 (請先閱讀背面之注意事項再填寫本頁) .· 訂---------線- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 1258786 五、發明說明（ή ) 圖12A係顯示圖7之較時刻tl爲前之狀態中，支撐調 整構件37之溫度較短邊框架35之溫度爲高的情況之短邊 框架35的位移狀態圖。在本圖中，係以短邊框架35與支 撐調整構件37之熱膨脹係數相等爲前提(圖12B也是同樣 的）。 假使支撐調整構件37並未固接於短邊框架35，由於 支撐調整構件37之溫度較短邊框架35之溫度爲高，所以 比較支撐調整構件37以及與此對應之部分的短邊框架35 ，則支撐調整構件37之熱膨脹所造成之延伸會較短邊框架 35之延伸來得大。 實際上，由於支撐調整構件37係固接於短邊框架35 ，所以支撐調整構件37成爲對短邊框架35施加往拉伸方 向(箭頭d)的力。其結果，短邊框架35係如箭頭e所示般 彎曲成凹狀，蔭罩36成爲往接近螢光面的方向做位移（圖 12A之一點鏈線部）。於是，q値會變小。 在電子屏蔽40係受到兩側合計爲電子束之約10%程度 的突射，相對於此，在蔭罩36係受到絕大多數之電子束的 突射。藉此，蔭罩36之溫度上升，蔭罩36之熱量會移動 到長邊框架34，進一步移動到短邊框架35。是以，如圖7 之較時刻tl爲前之狀態般，短邊框架35相對於支撐調整 構件37在溫度上升上出現時間延後。 由於來自長邊框架34之熱量持續地移往短邊框架35 ，短邊框架35之溫度乃持續上升，於圖7所示之時刻tl 中，短邊框架35與支撐調整構件37溫度成爲相等，進一 21 L _____ _ 本紙i尺度適用中國國家標準（CNS)A4規格（210 X 297公爱) " (請先閱讀背面之注意事項再填寫本頁) 訂---------線 A7 1258786 五、發明說明（>C) (請先閱讀背面之注咅？事項再填寫本頁) 步溫度持續上升。此乃由於，自長邊框架34傳送到短邊框 架35之熱量係較經過電子屏蔽40、內部磁氣屏蔽30而傳 送到支撐調整構件37之熱量來得大之故。如圖7所示，在 時刻tl之後短邊框架35之溫度持續上升，在到達既定溫 度後呈安定狀態。 另一方面，隨著短邊框架35之溫度上升，短邊框架 35之熱量也會移動到支撐調整構件37。此時，由於支撐調 整構件37之溫度變得較接合於此之內部磁氣屏蔽30的溫 度爲高，所以支撐調整構件37之熱量乃會移動到內部磁氣 屏蔽30。如圖8所示般，由於內部磁氣屏蔽30具有相當 程度的表面積，所以內部磁氣屏蔽30會作爲放熱板而作用 ，支撐調整構件37之溫度上升乃受到抑制。 亦即，即使支撐調整構件37與短邊框架35之溫度成 爲相等之時刻tl之後，相對於短邊框架35溫度持續上升 ，支撐調整構件37則停止溫度上升，而在既定溫度維持安 定狀態。從而，於時刻tl之後，支撐調整構件37與短邊 框架35之溫度的上下關係顛倒，成爲短邊框架35之溫度 較支撐調整構件37之溫度爲高的狀態而安定著。 圖12B所示係圖7之時刻tl之後之狀態下，短邊框架 35之溫度較支撐調整構件37之溫度爲高之狀態之短邊框 架35的位移圖。假使支撐調整構件37並未固接於短邊框 架35，則由於短邊框架35之溫度較支撐調整構件37之溫 度爲高，所以比較支撐調整構件37以及與此對應之部分的 短邊框架35，則短邊框架35之熱膨脹所造成之延伸會較 22 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱） 1258786 A7 B7 ....................... ' ... — ............-.-...-. .....-.…—一 五、發明說明（> 1 ) 支撐調整構件37之延伸來得大。 實際上，由於支撐調整構件37係固接於短邊框架35 ，所以支撐調整構件37成爲對短邊框架35施加往壓縮方 向(箭頭f)的力。其結果，短邊框架35係如箭頭g所示般 彎曲成凸狀，蔭罩36成爲往遠離螢光面的方向做位移（圖 12B之一點鏈線部）。於是，（1値會變大。 於圖12B之情況中，若支撐調整構件37之熱膨脹係數 遠大於短邊框架35之熱膨脹係數，則如圖12A之情況般， 支撐調整構件37成爲對短邊框架35施加往拉伸方向(箭頭 d)的力。是以，短邊框架35會如箭頭e所示般彎曲成凹狀 ，蔭罩36成爲往接近螢光面的方向做位移，於是可減低管 軸方向之位移。 亦即，藉由讓支撐調整構件37之熱膨脹係數大於短邊 框架35之熱膨脹係數，則不僅可防止於玻璃料密封製程等 之生產製程中之蔭罩在高溫區域的塑性變形，同時可抑制 於陰極射線管之動作中之短邊框架35與支撐調整構件37 之間的溫度差所產生之管軸方向的位移。此時，支撐調整 構件37之熱膨脹係數以短邊框架35之熱膨脹係數的1.2 倍以上爲佳，例如在支撐調整構件37方面使用SUS304(熱 膨脹係數180X1(T7/°C)，在短邊框架35方面使用鉬化鉻鋼( 熱膨脹係數120Χ10·7/°〇。 又，當支撐調整構件37之熱膨脹係數與短邊框架35 之熱膨脹係數相等的情況，如前述般會發生短邊框架35與 支撐調整構件37之間的溫度差所造成之管軸方向的位移， 23 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) -·1111111^OJ11111111 · 1258786 A7 R7 五、發明說明6二） 又當熱膨脹係數差很小的情況，上述位移現象將難以充分 抑制。 惟，即使在此種情況，由於可得到短邊框架35之剛性 提升的效果，所以相較於不具支撐調整構件37之構成’進 一步抑制電子束突射時之蔭罩在管軸方向的位移之此種效 果仍然存在。 (實施形態5) 以上，係於陰極射線管動作時，爲讓蔭罩36往接近螢 光面之方向來位移，而使得支撐調整構件37之熱膨脹係數 較短邊框架35之熱膨脹係數爲大的例子做說明，惟亦可將 支撐調整構件37在長方向之彈簧常數設定成較小。藉此， 可緩和圖12B所示之支撐調整構件37往壓縮短邊框架35 之方向(箭頭f)的力，所以可減低蔭罩36在管軸方向的位 移。 圖13A〜C係有關彈簧常數減低之實施形態5的支撐調 整構件之側視圖。在本圖所示之支撐調整構件22a〜22c，爲 了減低彈簧常數，所以皆形成有突起，各突起係將支撐調 整構件在側面所見之大致中央部分加以彎曲加工而形成者 。圖13A之支撐調整構件22a自側面來看係形成倒V字型 的突起，圖13B所示之支撐調整構件22b自側面來看係形 成爲倒U字型、或是半圓上的突起。圖13C所示之支撐調 整構件22c係於圖13A所示之突起形狀進一步追加彎曲形 狀所得者。 各支撐調整構件爲了發揮彈簧效果，緩和短邊框架35 24 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱1 ^ -------------------- —訂---------線 (請先閱讀背面之注意事項再填寫本頁) 1258786 五、發明說明（>') 之壓縮方向的力，於各圖所示之突起，其寬度W以 5〜50mm之範圍內、高度h以5〜50mm爲佳。又，各支撐調 整構件在長方向之彈簧常數以1.47Xl04N/mm以下爲佳。 又，爲了減低彈簧常數，也可將各支撐調整構件之截面積 縮小。 (實施形態6) 在本實施形態，係爲了防止時間之經過所造成之q値 偏差之其他的實施形態。如實施形態4所說明般，只要讓 支撐調整構件37與長邊框架34之熱膨脹係數成爲相同程 度，則由於隨時間的經過蔭罩面會時而接近時而遠離螢光 面，所以電子束軌道會變化。於圖7B中，係顯示時刻一 電子束移動量之關係圖，關於電子束軌道之變化，係一邊 與圖7A所示之時刻一溫度之關係圖對比一邊來說明。 到時刻tO爲止之電子束移動量，係於動作初期電子束 突射於蔭罩使得蔭罩熱膨脹，而對應此熱膨脹之框架的變 形所發生的。一旦超過時刻tO，由於支撐調整構件之溫度 較短邊框架爲高，支撐調整構件之熱膨脹相較於短邊框架 之熱膨脹會變得較大，所以蔭罩會往回到熱膨脹前之狀態 的方向來變化，電子束移動量會暫時變小。 接著，相對於支撐調整構件之溫度上升變得緩慢，短 邊框架之溫度上升速度則是維持不變而使得溫度持續上升 之故，於是受到短邊框架之熱膨脹的影響，蔭罩會往熱膨 脹方向變化，電子束移動量乃增加。當在時刻tl支撐調整 構件與短邊框架之溫度成爲相同，則電子束移動量係變爲 25 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) · 訂---------線. A7 1258786 五、發明說明（:>々） 與初期之時刻tO之情況相同。之後電子束移動量也是逐漸 地增加，電子束移動量最後會達到安定。 (請先閱讀背面之注意事項再填寫本頁) 此種電子束移動量的變化會造成TV組之調整困難。 本實施形態係藉由抑制支撐調整構件與內部磁氣屏蔽之間 的熱傳導，來防止支撐調整構件與固定著支撐調整構件的 短邊框架之間發生溫度差，讓電子束移動量得以安定化。 圖14所示之實施例係圖8所示之內部磁氣屏蔽30之 平面部31與支撐調整構件37透過突起部來接合者。圖 14A係顯示平面部31之立體圖，圖14B係顯示圖14A之Π 一 Π線之截面圖。於圖14A、B中，在內部磁氣屏蔽30之 平面部31係形成有突起部41。突起部41係以在平面部31 形成凹部的方式來設置凹陷，讓平面部31成爲突起於支撐 調整構件37側之部分。42係顯示熔接點，突起部41與其 下之支撐調整構件37係藉由熔接來接合。 藉此，如圖14B所示般，平面部31之下面與支撐調整 構件37之上面之間會形成間隙，在此間隙內則夾設著熱傳 導率較內部磁氣屏蔽30與支撐調整構件37爲低之低熱傳 導率構件43。若內部磁氣屏蔽30與支撐調整構件37爲鐵 材質，則低熱傳導率構件43可採用例如SUS304。 依據本圖所示之實施例，由於平面部31與支撐調整構 件37之間的熱傳導受到抑制，乃可遮斷在實施形態4以圖 11所說明般之經由電子屏蔽40、內部磁氣屏蔽30而傳送 到支撐調整構件37之熱傳送。從而，支撐調整構件37之 溫度上升完全取決於來自短邊框架35之熱傳導。 26 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） A7 1258786 ___B7___ 五、發明說明（/t ) 另一方面，以上述方式來抑制平面部31與支撐調整構 件37之間的熱傳導，則自支撐調整構件37往平面部31之 熱傳送也可受到抑制，於是實施形態4所說明之內部磁氣 屏蔽30的放熱效果也受到抑制。 此處，圖17A係顯示有關本實施形態之陰極射線管動 作時之框架及支撐調整構件之時刻一溫度關係圖，圖17B 係顯示有關本實施形態之陰極射線管動作時之時刻一電子 束移動量關係圖。圖17B之以虛線表示之曲線係用以比較 的圖示，其相當於圖7B所示之時刻一電子束移動量之關係 〇 亦即，如圖17A所示般，短邊框架35與支撐調整構 件37之溫度在陰極射線管動作後以相同之上升速度來上升 ，在時刻tl之後，支撐調整構件37與短邊框架35在同樣 溫度下安定化。因此，如圖17B所示般，於時刻t0之後， 電子束移動量成爲一定値而安定。 在本實施例中，如圖14B所示般，平面部31與支撐調 整構件37之間的接觸面積係成爲突起部41之接合部分的 面積。此接觸面積愈小則愈可抑制平面部31與支撐調整構 件37之間的熱傳導。是以，接觸面積以支撐調整構件37 之單面的面積之25%以下爲佳，以5%以下爲更佳。 圖15所示之實施例也同樣地讓圖8所示之內部磁氣屏 蔽30之平面部31與支撐調整構件37透過突起部來接合。 圖15A係顯示平面部31之立體圖，圖15B係顯示圖15A 之ΠΙ — ΠΙ線之截面圖。於圖15A、B中，在內部磁氣屏蔽 27 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) · 訂---------線. A7 1258786 五、發明說明（7^ ) 30之平面部31係形成有突起部45。突起部45係以在狹縫 44間之部分形成凹部的方式來設置凹陷，讓平面部31成 爲突起於支撐調整構件37側之部分。45係顯示熔接點， 突起部45與其下之支撐調整構件37係藉由熔接來接合。 在本實施例也同樣地，在平面部31與支擦調整構件 37之間夾設低熱傳導率構件46。低熱傳導率構件46之材 料以及突起部45之接觸面積的比例係與前述實施例同樣。 亦即，本實施例在突起部之形成方法以外的構成係與圖14 所示之前述實施例同樣，可得到同樣的效果。 圖16所示之實施例也同樣地讓平面部31與支撐調整 構件37透過突起部來接合。圖16A係顯示支撐調整構件 37之立體圖，圖16B係顯示圖16A之IV — IV線之截面圖。 於圖16A、B中，在支撐調整構件37係形成有突起部 47。自裏面側來看支撐調整構件37，則突起部47係以在 支撐調整構件37形成凹部的方式來設置凹陷，讓支撐調整 構件37成爲突起於平面部31側之部分。48係顯示熔接點 ，突起部47與其上之平面部31係藉由熔接來接合。 在本實施例也同樣地，在平面部31與支撐調整構件 37之間夾設低熱傳導率構件49。低熱傳導率構件49之材 料以及突起部47之接觸面積的比例係與前述實施例同樣。 亦即，本實施例在突起部之形成方法以外的構成係與圖14 所示之前述實施例同樣，可得到同樣的效果。 在圖14〜16所示之實施例中，係以平面部31與支撐調 整構件37之間透過突起部來接合之例子做說明，惟亦可不 28 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) · 訂---------線- A7 1258786 五、發明說明 (請先閱讀背面之注意事項再填寫本頁) 形成突起部而是在平面部31與支撐調整構件37之間夾設 陶瓷等之絕熱材來進行接合。此種構成相較於圖13〜15所 示之實施例，雖在達成輕易、確實的接合方面有不利之處 ，但由於平面部31與支撐調整構件37並無直接相接之部 分，所以絕熱效果會更爲確實。 又，當平面部31與支撐調整構件37之接觸面積小， 可發揮充分的絕熱效果時，則在平面部31與支撐調整構件 37之間不夾設低熱傳導率構件49亦無妨。 又，在圖6所示之實施形態中，雖舉出在框架14之裏 面固接高膨脹之支撐調整構件22的例子，惟即使是在框架 14表面之面14b固接熱膨脹係數較框架14爲低之低膨脹之 支撐調整構件的情況，也可得到同樣的效果。此時之低膨 脹之支撐調整構件可使用例如36%Ni—Fe合金。 又，雖以在圖2所示之實施形態的框架14上固接支撐 調整構件爲例來說明，惟於圖3所示之實施形態的框架18 上固接支撐調整構件也可得到同樣的效果。 又，以一軸來架設蔭罩的情況，在橫方向會形成空隙 ，於是地磁的磁通容易通過，結果電子束發生偏動而發生 色偏現象。在前述各實施形態中，由於可藉由在框架形成 曲柄狀之高低差部分而以鐵系材料來遮蔽橫方向之空隙， 所以可得到磁氣屏蔽效果。 又，在則述各實施形態中，雖以透過彈簧裝設構件n 來將彈_構件12安裝於框架μ、18的例子做說明，但也 可將彈黃構件12直接安裝於框架14、18或是彈簧裝設構A7 1258786 V. Technical Description [Technical Field] The present invention relates to a shadow mask type cathode ray tube used in a television display, a computer monitor or the like. [Background Art] A cross-sectional view of an example of a conventional color cathode ray tube is shown in Fig. 18. The color cathode ray tube 1 shown in the figure includes a substantially rectangular panel 2 having a fluorescent screen surface 2a formed on its inner surface, a funnel 3 connected to the rear of the panel 2, and an electron gun 4 embedded therein. The neck 3a of the funnel 3; the shadow mask 6 disposed opposite the phosphor screen 2a inside the panel 2; and the frame 7 for fixing the shadow mask 6. Further, in order to perform the oblique scanning of the electron beam, the deflecting yoke 5 is provided on the outer peripheral surface of the funnel 3. The shadow mask 6 plays a role of color sorting with respect to the three electron beams emitted from the electron gun 4, and a plurality of substantially elongated elongated holes are formed by etching on the flat plate as electron beam passage holes. Line A shows the electron beam trajectory. The frame 7 of the plate-like member to which the shadow mask 6 is fixed has a pair of frames 8 which are fixed as the support of the frame 7 at both ends in the longitudinal direction. The frame 7 of the pair of pairs forms a frame-like body with the pair of frames 8. The frame-like body and the shadow mask 6 fixed thereto form a shadow mask structure 9. A plate-shaped spring mounting member 21 is fixed to the pair of upper and lower frames 7, and the spring mounting member 21 fixes the spring member 10. The plate-shaped spring mounting member 11 is fixed to the pair of left and right frames 8, and the spring mounting member 11 holds the spring member 12. The fixing of the mask cover 9 to the panel 2 is performed by the mounting hole 10a of the spring member 1 and the pin 13 above the inner surface of the panel 2, and the spring 3 ----------- ---------Set---------Line (please read the back note 咅3 and then fill out this page) This paper scale applies to China National Standard (CNS) A4 specification (210 X 297 mm) One " A7 1258786 V. INSTRUCTION OF THE INVENTION The mounting hole 12a of the member 12 is fitted to a pin (not shown) on the left and right sides of the panel 2. In a color cathode ray tube, the thermal expansion of the shadow mask 6 caused by the electron beam projection causes the electron beam to be displaced through the aperture, so that the electron beam passing through the aperture of the electron beam cannot correctly illuminate the predetermined phosphor. The so-called bulging phenomenon of color spots occurs. Therefore, in practice, the stretching force which absorbs the thermal expansion caused by the temperature rise is applied in advance, and the shadow mask 6 is erected and held on the frame 7. By the erection and holding in this manner, even if the temperature of the shadow mask 6 rises, the deviation between the opening of the shadow mask 6 and the phosphor stripes of the phosphor screen surface 2a can be reduced. However, the conventional color cathode ray tube described above has the following problems. When the electron beam is projected on the shadow mask 6 in the erected holding state to cause thermal expansion, and the tensile force is reduced, the internal force moment of the shadow mask structure 9 is also reduced, and the equilibrium state is changed. The change of the equilibrium state causes a deviation of the distance (q値) between the opening of the shadow mask 6 and the fluorescent screen surface 2a, that is, the positional deviation of the shadow mask 6 in the tube axis direction, and the electron beam will not be correctly The problem is caused by hitting the phosphor and causing stains. Even if the shadow mask is held by the above-described shadow mask, the color unevenness caused by the positional deviation of the shadow mask 6 in the tube axis direction cannot be sufficiently prevented. [Disclosure of the Invention] The present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to provide a cathode ray tube which can suppress the positional deviation of the shadow mask in the tube axis direction and thereby prevent the stain phenomenon. In order to achieve the above object, the cathode ray tube of the present invention has: 4 -------------------- order--------- line (please first Read the notes on the back and fill out this page.) Scale applies to China National Standard (CNS) A4 specification (210 X 297 mm) ""' 1258786 A7 _ B7___ _ V. Invention description (2) Pair of plate members a pair of support members (which are fixed to the respective plate-like members in a state in which the pair of plate-like members are opposed to each other to support the respective plate-like members) and a shadow mask (in a state in which a tensile force is applied) The lower support is fixed to each of the plate-like members described above; and the support has a crank-like height difference portion (formed to be a projection on the shadow mask side). According to the cathode ray tube described above, the internal force moment of the shadow mask structure can be reduced, so that even if the electron beam is caused to cause thermal expansion of the shadow mask, the displacement of the shadow mask in the tube axis direction can be suppressed, and the variation of the 値 can be suppressed. Further, since the crank-shaped step portion ' can shield the gap in the lateral direction with the iron-based material, the magnetic gas characteristics can be improved. In the cathode ray tube, it is preferable that the support body has an extending portion from the end portion to the inner side in the longitudinal direction of the plate-shaped member, and the end portion of the extending portion is fixed to the plate-shaped member. Thereby, the portion of the support body that enters the longitudinal inner side of the plate-like member is fixed. According to the cathode ray tube described above, the tensile force distribution of the shadow mask can be easily set to a mountain shape, and the vibration of the shadow mask can be easily suppressed by the free end portion of the shadow mask. Further, at this time, the fluctuation of the support body is increased by the thermal expansion of the shadow mask, but the stress is absorbed by the portion that enters the inner side, and the spring member (for supporting the support body) is attached to the support body. The stress on the shaft can be reduced. Yes, it will be more effective to reduce the internal force moment of the shadow mask structure. Further, the support body is further fixed to the spring mounting member (the recessed portion formed in the crank-shaped step portion for supporting the support body), and the spring mounting member is fixed to the spring member, The spring member forms a mounting hole for inserting the mounting pin, and the middle 5 k' of the aforementioned mounting hole is in Chinese National Standard (CNS) A4 specification (210 X 297 public) ' ^ ---------- ----------Book---------Line (please read the notes on the back and fill out this page) A7 1258786 .............. .............._B7_ 1-5, invention description (...) The position of the heart point relative to the support body which is fixed to the portion of the plate-like member is located on the side of the shadow mask The opposite side is what is desired. According to the cathode ray tube described above, since the change in the moment of the support member caused by the reaction force of the tensile force of the shadow mask applied to the plate member can be reduced, the displacement amount in the tube axis direction above the plate member can be reduced. . Further, the support body is fixed to the spring member (the recessed portion formed in the crank-shaped step portion or the outside of the recessed portion is used to support the support body), and the spring member is formed to be used to insert the mounting pin. The mounting hole, the center point of the mounting hole, is located on the opposite side of the shadow mask side with respect to the position of the support body that is fixed to the portion of the plate-like member. According to the cathode ray tube described above, since the spring member is directly mounted on the support, the spring mounting member is not required. Further, it is desirable that the crank-like height difference portion has a linear portion in the longitudinal direction of the support. According to the foregoing cathode ray tube, the member for attaching the shadow mask structure to the panel to the panel can be easily attached to the support. Further, in the crank-like step portion, it is desirable that the central axis of the portion shifted toward the shadow mask side is located above the surface of the shadow mask. According to the cathode ray tube described above, since the shadow mask is approached to the phosphor screen with thermal expansion, a color shift correction effect can be obtained. Further, the curved portion of the crank-shaped step portion is formed in a circular arc shape, and the radius of curvature of the inner circumferential side of the circular arc is preferably 20 mm or more. According to the cathode ray tube described above, excessive stress concentration in the bent portion can be prevented, and sufficient rigidity can be ensured. 6 Scale applicable to China National Standard (CNS) A4 specification (210 X 297 mm) One -------------------- Order ---------^ ^_wl (Please read the note on the back and then fill out this page) 1258786 V. Inventive Note (r) Further, the support adjustment member is opposed to the support body via a recessed portion formed in the crank-like height difference portion. The way to further solidify is hopeful. According to the cathode ray tube described above, in addition to the effect of reducing the torque variation, the ridge has the effect of improving the rigidity of the support. At this time, since the secondary moment of the section is increased, the sectional size of the steel for the support can be lowered to the secondary object. Further, it is possible to further suppress the displacement of the shadow mask in the tube axis direction when the electron beam is emitted. Further, compared with the secondary moment of the cross section around the axis of the support body in the tube axis direction, the secondary moment of the cross section around the axis in the horizontal direction becomes large, so that the displacement of the support body in the tube axis direction is suppressed, The displacement in the horizontal direction is increased, so the displacement in the horizontal direction can be used to correct the tube axis direction. Further, it is preferable that the support adjusting member further forms a projection which can reduce the spring constant of the support adjusting member in the longitudinal direction. According to the cathode ray tube described above, since the support adjusting member can relax the force in the direction in which the support body is compressed during the operation of the cathode ray tube, the displacement of the shadow mask in the tube axis direction can be reduced. Further, it is desirable that the support adjustment member has a spring constant of 1.47 X 104 N/mm or less in the longitudinal direction. Further, the thermal expansion coefficient of the support adjusting member is larger than that of the support. According to the foregoing cathode ray tube, plastic deformation of the shadow mask in the heat treatment process can be prevented. Further, the displacement in the tube axis direction when the cathode ray tube operates can be suppressed. Further, the thermal expansion coefficient of the support adjusting member is 7 of the above-mentioned support body. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ---------------- ----Book---------Line (please read the note on the back and fill out this page) 1258786 V. Invention Description (L) 1.2 times or more of the thermal expansion coefficient is desirable. Further, the support adjustment member having a smaller thermal expansion coefficient than the support is fixed to the crank-like height difference portion, and the surface of the portion offset toward the shadow mask side is desired. According to the foregoing cathode ray tube, plastic deformation of the shadow mask in the heat treatment process can be prevented. Further, it is desirable that the internal magnetic shield is fixed to the support adjusting member via a heat insulating material. According to the cathode ray tube described above, the heat transfer from the support to the internal magnetic shield can be suppressed, and the heat release effect of the internal magnetic shield can be suppressed, so that the support and the support adjustment member can be stabilized at the same temperature. Thereby, the amount of movement of the electron beam can be stabilized, and the color shift can be prevented. Further, the internal magnetic shield is fixed to the support adjusting member, and a contact area between the internal magnetic shield and the support adjusting member is preferably 25% or less of a single surface area of the support adjusting member. According to the cathode ray tube described above, since the contact area between the internal magnetic shield and the support adjusting member is small, heat transfer from the support to the internal magnetic shield via the support adjusting member can be suppressed, and the heat release effect of the internal magnetic shield can be suppressed. Therefore, the support body and the support adjustment member can be stabilized at the same temperature. Thereby, the amount of electron beam movement can be stabilized, and color shift prevention can be achieved. Further, it is desirable that the contact area of the internal magnetic air shield and the support adjustment member is 5% or less of the one-sided area of the support adjustment member. According to the cathode ray tube described above, since the heat transfer from the support to the internal magnetic shield via the support adjusting member can be more reliably suppressed, the color shift can be more reliably prevented. 8 This paper scale applies to China National Standard (CNS) A4 specification (210 X 297 mm) -------------------- Order --------- Line (please read the precautions on the back and fill out this page) A7 1258786 V. Description of the invention (1) (Please read the note on the back and fill in this page) Further, in the above-mentioned internal magnetic shield and the above-mentioned support adjustment member It is desirable to interpose a member having a lower thermal conductivity than the inner magnetic shield and the support adjusting member. According to the cathode ray tube described above, heat transfer from the support to the internal magnetic shield via the support adjusting member can be more reliably suppressed. Further, the material of the member having a low thermal conductivity is preferably SUS304. Further, the internal magnetic shield is joined to the support adjustment member through a projection formed by at least one of the internal magnetic shield and the support adjustment member, and the contact area is a joint area of the projection. Hoped. According to the cathode ray tube described above, the internal magnetic shield can be more easily and more reliably joined to the aforementioned support adjusting member, and the contact area between the internal magnetic shield and the support adjusting member can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing a color cathode ray tube according to an embodiment of the present invention. Fig. 2 is a perspective view of a shadow mask structure according to a first embodiment of the present invention. Fig. 3 is a perspective view of a shadow mask structure according to a second embodiment of the present invention. Fig. 4A shows a moment relating to a conventional shadow mask structure. A diagram of an example of the application of gas. Fig. 4B is a view showing a state of application of a moment relating to a shadow mask structure according to an embodiment of the present invention. Figure 5 is related to the shadow mask structure of other embodiments of the present invention. 9 The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) A7 1258786 V. The invention (Ρ) Apply a state diagram. Fig. 6 is a perspective view showing a shadow mask structure according to a third embodiment of the present invention. Fig. 7A is a timing chart showing the relationship between the frame and the support adjustment member during the operation of the cathode ray tube. Fig. 7B is a graph showing the relationship between the electron beam movement amount at the time of the operation of the cathode ray tube. Fig. 8 is a perspective view showing an example of the internal magnetic air shield. Fig. 9 is a perspective view of a shadow mask structure according to a fourth embodiment of the present invention. Fig. 10 is an arrow A of Fig. 9 in which the internal magnetic air shield and the shadow mask structure are joined. Figure 11 is a cross-sectional view taken along the line I-I of Figure 9 in which the internal magnetic shield is joined to the shadow mask. Fig. 12A is a view showing a displacement state of the frame when the cathode ray tube is operated in a state in which the time t1 in Fig. 7 is the front. Fig. 12B is a view showing a displacement state of the frame when the cathode ray tube is operated in a state where the time t1 in Fig. 7 is the rear. Fig. 13A is a side view showing an example of a support adjusting member obtained by forming a projection for reducing a spring constant according to an embodiment of the present invention. Fig. 13B is a side view showing another example of the support adjusting member obtained by forming the projection for reducing the spring constant according to an embodiment of the present invention. Fig. 13C is a side view showing still another example of the support adjusting member obtained by forming the projection for reducing the spring constant according to an embodiment of the present invention. 10 The paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ' Jobs -------------------- Order ------- - Line (Please read the back note first and then fill out this page) A7 1258786 V. INSTRUCTION DESCRIPTION (I) FIG. 14A is a perspective view of Embodiment 1 relating to the engagement of the internal magnetic air shield and the support adjustment member. (Please read the note on the back and then fill out this page.) Figure 14B is a cross-sectional view of the Π line after Figure 14A. Fig. 15A is a perspective view of Embodiment 2 relating to engagement of an internal magnetic air shield and a support adjusting member. Figure 15B is a cross-sectional view of the ΠΙ line of Figure 15A. Fig. 16 is a perspective view showing a third embodiment of the engagement of the inner magnetic shield and the support adjusting member. Figure 16 is a cross-sectional view taken along line IV - IV of Figure 16A. Fig. 17A is a timing chart showing the relationship between the frame and the support adjusting member during the operation of the cathode ray tube according to the sixth embodiment of the present invention. Fig. 17A is a view showing the relationship between the electron beam movement amount at the time of the operation of the cathode ray tube according to the sixth embodiment of the present invention. Figure 18 is a cross-sectional view showing an example of a conventional color cathode ray tube. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The same constituent elements as those of the conventional examples are denoted by the same reference numerals. (Embodiment 1) Fig. 1 is a cross-sectional view showing a color cathode ray tube according to Embodiment 1 of the present invention. 2 is a perspective view of the shadow mask structure 16 of FIG. 1. In Fig. 2, the illustration of the shadow mask 6 is omitted. The frame 14 as a support body of the frame 7 of the plate-like member has a curved portion. This curved portion forms a crank-like height difference portion. The face 14b in the lower portion of the crank shape is located on the side of the shadow mask 6 with respect to the face 14a, and is applicable to the CNS A4 specification (210 X 297 male ® ) at 11 paper scales. 'A7 1258786 V. DESCRIPTION OF THE INVENTION (K:) A height difference 15 is formed between the surface 14a and the surface 14b. (Please read the precautions on the back side and fill out this page.) At each end of the upper and lower frames 7, the left and right frames 14 are fixed by welding or the like to form a frame-like body (Fig. 2). The mask frame 16 is formed by fastening the shadow mask 6 to the frame 7 therein. The plate-like spring mounting member 21 is fixed to the pair of upper and lower frames 7, and the spring member 10 is fixed to the spring mounting member 21. The pair of left and right frames 14 are fastened to the plate-like spring mounting member 11, and the spring mounting member is tamped to the spring member 12. Thereby, the mounting hole 12a of the spring member 12 is located in the substantially central part of the longitudinal direction of the frame 14. Further, since the portion of the surface 14b of the crank portion of the frame 14 is formed linearly in the longitudinal direction of the frame 14, the mounting of the spring mounting member 11 is easy. The fixing of the mask member 16 to the panel 2 is also the same as in the case of FIG. 18, and the mounting hole 10a of the spring member 10 is fitted to the pin 13 above and below the inner surface of the panel 2, and the mounting hole of the spring member 12 is fitted. 12 is fitted to the left and right pins (not shown) on the inner surface of the panel 2. Figure 4 is a diagram for comparing the moments applied to the shadow mask structure, showing a portion of the side of the shadow mask structure, respectively. Fig. 4A is a configuration of a conventional example shown in Fig. 18, and Fig. 4B is a configuration of the embodiment shown in Fig. 1. In the figure, the z-axis direction is equal to the tube axis direction, and the upward direction is set to be positive. Regardless of the type of the figure, the shadow mask 6 is erected and held on the upper surface 7a of the frame 7, and the shadow mask 6 is applied with a tensile force in the direction of the arrow a. If the tensile force of the shadow mask 6 is taken as F, the reaction force F of the same magnitude as the tensile force F is applied to the direction of the arrow on the upper surface 7a of the frame 7 (the upper surface is 7a to the inner side. Standard (CNS) A4 specification (210 X 297 mm) 1258786 V. Description of invention (ί丨) Dumping). Further, the spring member 12 is a material having a thickness of about 1 mm, and the change in the moment caused by the thermal expansion of the shadow mask 6 is determined by the respective frames assembled in the frame-shaped body. If the moment generated by the reaction force F in each figure is examined, the torque around the center point (point A) of the reaction body F on the axis of the frame 8 in the case of the conventional example shown in Fig. 4A When the shortest straight line distance from the upper 7a to the middle axis is L, 'will become M=FxL. That is, in the state shown in Fig. 4A, the state in which the moment 周围 around the point A generated by the reaction force F of the upper surface 7a of the frame 7 is applied is maintained. In the original equilibrium state, the tensile force F becomes smaller because of the thermal expansion of the shadow mask 6, so that the moment 周围 around the 产生 point generated by the reaction force F of the upper surface 7a of the frame 7 becomes smaller, resulting in a balanced state. It will also change. In the case of Fig. 4, since the tensile force F is lowered due to thermal expansion, the position indicated by the one-point chain moves to the position of the solid line, and in this state, the equilibrium state is maintained again. That is, the thermal expansion causes the upper surface 7a of the frame 7 to be displaced in the negative direction of the yoke Δζ. In fact, since the frame 8 is restricted by the mounting hole 12a of the spring member 12, it is displaced by ΔΖ in the negative direction of the yaw axis. Next, in the case of the present embodiment shown in Fig. 4A, the moment 周围 around the defect generated by the reaction force F becomes that when the shortest linear distance of the axis from the upper surface 7a to the frame 14c is 1/ M^FxL'. In the present embodiment, the surface 14b of the frame 14 is located in the positive direction of the x-axis (i.e., the side of the shadow mask 6) with respect to the surface 14a. Thus, point A is also displaced in the positive direction of the x-axis. Therefore, since the distance L' is shorter than the distance L by the height difference of 15 degrees, L' <L,M, The relationship of <M will be established. 13 This paper scale applies to China National Standard (CNS) A4 specification (21〇χ 297 mm) (please read the notes on the back and fill out this page). Order---------Line· 1258786 V. DESCRIPTION OF THE INVENTION (In other words, in the state shown in Fig. 4A, the balance state is maintained in a state where a relatively small torque Μ' is applied. As in the case of Fig. 4, once the thermal expansion of the shadow mask 6 is made When the extension force F becomes smaller, the moment Μ' will also become smaller, and as a result, the equilibrium state will also change. In the case of this figure, since the tensile force F is lowered, it will be from the position indicated by a little chain line to the solid line. The position is moved, and the state is again maintained in this state. At this time, the frame 14 which is deflected as shown by a chain line will be moved as if it were liberated. That is, under the influence of thermal expansion, the upper surface 7a of the frame 7 will be smashed. The negative direction of the shaft is displaced by Δζ'. Here, the amount of displacement in the x-axis direction caused by the variation of the tensile force is the moment around the defect generated by the reaction force on the upper surface of the frame 7 where the frame 14 is deflected. In proportion to the above, as described above, according to this embodiment, due to the framework The reaction force generated by the reaction force of the upper surface 7a of 7 is small, so that the amount of change in the deflection of the frame 14 can be reduced to reduce the amount of displacement of the upper surface 7a of the frame 7 in the x-axis direction. That is, even electrons The beam projection causes thermal expansion of the shadow mask 6, and the displacement of the shadow mask 6 in the tube axis direction (the x-axis direction) can be suppressed, and the deviation of the pupil can be suppressed. In the embodiment shown in Fig. 4B, the surface 14b of the frame 14 is relatively opposed. The surface 14a is offset in the positive direction of the yaw axis, and the surface 14b is located on the lower side than the surface of the shadow mask 6. In the embodiment shown in Fig. 5, the height difference between the surface 20a of the frame 20 and the surface 20b is compared. In the case of 4B, the surface 20b is further shifted in the positive direction of the x-axis, and the surface 20b is located on the upper side with respect to the surface of the shadow mask 6. According to the present embodiment, the center point on the shaft in the frame 20 (point A) Unlike the embodiment shown in Fig. 4B, the surface of the shadow mask 6 is located on the upper side, so the direction of the moment Μ around the point A becomes reversed. Yes, 14 ^ _________ ____________ (please read the back side first) Note: Please fill out this page) IAW -------- order --------- This paper scale applies to China Standard (CNS) A4 size (210 X 297 mm) A7 1258786 V. Description of the invention (I 4 ) The direction of displacement of the upper surface 7a of the frame 7 caused by the thermal expansion of the shadow mask 6 becomes opposite (positive direction of the z-axis). The displacement of the shadow mask 6 in the positive direction of the z-axis causes the shadow mask 6 to approach the side of the phosphor screen 2a, so that the color shift correction effect can be obtained. Further, the frame 14 shown in FIG. 4B is held in the shadow mask 6. At the time of applying a compressive force, after the erection is held, the moment around the point A is applied, so that a certain degree of rigidity that does not cause plastic deformation is required. Therefore, the radius of curvature of the inner peripheral side of the arc-shaped curved portions 14c and 14d of the crank-shaped portion is preferably 20 mm or more, and more preferably 30 mm or more. This condition is also the same in the case of Fig. 5 and the embodiment shown in Fig. 3 described below. (Second Embodiment) Fig. 3 is a view showing an embodiment of a shadow mask structure according to a second embodiment. The illustration of the shadow mask 6 in this figure is omitted. Similarly to the frame-like body shown in Fig. 2, the shadow mask structure 17 shown in Fig. 2 has a curved portion which is a support portion of the frame 7 of the plate-like member, and this curved portion forms a crank-like height difference portion. The surface 18b of the crank-shaped step portion is located on the side of the shadow mask 6 with respect to the surface 18a, and a height difference is formed between the surface 18a and the surface 18b. The frame 18 has an extending portion 18c extending from the end portion to the inner side in the longitudinal direction of the frame 7. By fixing the end portion of the extending portion 18c to the frame 7, the end portion of the extending portion 18c will enter the longitudinal direction of the frame 7. The inner portion is fixed by welding or the like. Therefore, at both end portions of the frame 7, the frame 7 and the frame 18 are separated. The embodiment shown in this figure is also the same as the embodiment shown in Figure 2. The paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ----------- ----------Book---------Line (please read the note on the back? Please fill out this page again) 1258786 V. The description of the invention (Id) is the same. The moment around the point A generated by the reaction force of the upper surface 7a of the frame 7 is reduced, and the deflection of the frame 18 is reduced, and even if the shadow mask 6 thermally expands, the displacement of the shadow mask 6 in the tube axis direction can be suppressed, and the Q値 deviation is also Can be suppressed. As long as the shadow mask structure 17 shown in the figure is used, the distribution of the tensile force of the shadow mask 6 in the longitudinal direction of the frame 7 can be easily made into a mountain shape, and the shadow can be easily controlled by the free end portion of the shadow mask. The vibration of the cover. At this time, the tensile force is reduced due to the thermal expansion of the shadow mask 6, and the movement of the frame 18 of the short axis is larger than that of the shadow mask structure 16 shown in Fig. 2 . However, the stress is absorbed by the inner extending portion 18c, and the stress on the shaft of the mounting spring member 12 on the frame 18 can be alleviated. Therefore, in the present embodiment, the effect of reducing the moment around the point A as described above can be more effective. An experiment for comparing the amount of electron beam movement during electron beam irradiation using an embodiment of the shadow mask structure of the present embodiment shown in FIG. 1 and a conventional example using the conventional shadow mask structure shown in FIG. The results are shown in the following table, 2 (please read the note on the back and then fill out this page). · Order --------- Line · Table 1 EW end corners of the custom exception 1 5 / / m outer 20 // m implementation exception 5 // m outer 7 // m table 2 EW end corner familiar exception 200 // m outer 130 // m implementation exception 100// m outer 90 // m 16 The paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm). 1258786 V. Inventive Note (G) Table 1 shows the experimental results of the electron beam irradiation on the entire shadow mask. Table 2 shows the partial irradiation of the electron beam. Experimental results of the case of a shadow mask. In the case of Table 2, the electron beam was irradiated to the left and right end portions of the shadow mask, and the area irradiated to the electron beam was equivalent to 1/5 of the area of the shadow mask. The EW end portions referred to in Tables 1 and 2 refer to the left and right end portions of the shadow mask, and the right side is the E end portion and the left side is the w end portion as viewed from the surface side of the shadow mask. In the experimental results, the so-called external electron beam moves outward on the fluorescent surface. Moreover, in either case of Tables 1 and 2, the electron beam amount is set to Ia=1650 " m 〇The shadow mask is displaced in the negative direction of the tube axis (the direction away from the fluorescent surface), and the electron beam is emitted The smooth surface moves more outward, and in the examples shown in Tables 1 and 2, the amount of movement of the electron beam to the outside is greatly reduced, and the displacement of the shadow mask in the tube axis direction is greatly reduced. (Embodiment 3) Fig. 6 is a perspective view showing a shadow mask structure according to Embodiment 3. In the figure, the illustration of the shadow mask 6 is omitted. In the present embodiment, the support member 22 is fixed to the frame 14 of the embodiment shown in Fig. 2 . As shown in the figure, the support adjusting member 22 is disposed to face the frame 14 through the recessed portion formed by the crank-shaped step portion, and the both ends of the support adjusting member 22 are fixed to the frame 14 inside. Thereby, the rigidity of the frame 14 of the short-axis is improved, and the same effect as the rectangular cross-section can be obtained. In particular, the secondary moment of the section around the horizontal axis (shaft 28) becomes larger than the secondary moment of the section around the axis of the tube axis (shaft 27), so the strength of the bending of the frame 14 with respect to the long direction is obtained. Upgrade. Also 17 paper scale applies to China National Standard (CNS) A4 specification (210 X 297 mm) -------------------- Order -------- -Line (please read the precautions on the back and fill out this page) A7 1258786 V. INSTRUCTIONS (W) In this embodiment, the effect of reducing the torque change in the embodiment of Figs. 2 and 3 is added. The effect of the rigidity of the upper frame 14 is increased. Therefore, compared with the embodiment of Figs. 2 and 3, it is possible to further suppress the displacement of the shadow mask in the tube axis direction due to the change in the moment of the short axis when the electron beam is emitted. Further, with the above-described effect of the rigidity increase, the secondary moment of the cross section is increased, so that the cross-sectional size of the steel for the support can be selected to be lower. Furthermore, as described above, in the frame 14, the secondary moment of the section around the horizontal axis (shaft 28) becomes smaller than the secondary moment of the section around the axis of the tube axis (shaft 27). Since the displacement of the frame 14 in the tube axis direction (the direction of the axis 27) is suppressed, the displacement in the horizontal direction (the direction of the axis 28) is increased. When the frame 14 is moved in the direction in which the frame 14 is expanded outward in the horizontal direction, a plate-shaped spring fixed to the frame 14 may be used to displace the frame 14 in the tube axis direction. That is, the direction of the tube axis 14 can be corrected by the displacement in the horizontal direction of the frame 14. (Embodiment 4) In the fourth embodiment, in order to obtain an effect of renewal, the material for supporting the adjustment member is a material having a larger thermal expansion coefficient than the short-side frame to which the support adjustment member is fixed, and if the short-side frame is iron For the material, the support adjustment member is made of, for example, SUS304. Therefore, in the present embodiment, it is possible to prevent plastic deformation and heat of the shadow mask which is caused by excessive stretching of the shadow mask due to the short-side frame during heat treatment in a high-temperature region such as a frit seal process. The reduction in tensile force caused by the creep phenomenon. 18 (Please read the notes on the back and fill out this page) · Order --------- Line · This paper scale applies to China National Standard (CNS) A4 specification (210 X 297 mm) 1258786 A7 R7 That is, in this high temperature state, due to the difference in thermal expansion coefficient between the short side frame and the support adjusting member, for example, in the example shown in Fig. 6, the short side frame 14 is bent as indicated by the arrow c In the concave shape, the shadow mask is applied to the direction in which the tensile force in the direction of the erection is relaxed. Therefore, the tensile force applied to the shadow mask is lowered by the temperature rise. As described above, by setting the support adjusting member to have a larger thermal expansion coefficient of the shorter side frame, plastic deformation of the thermal shadow mask in the high temperature region in the production process of the frit sealing process or the like can be prevented, but in this manner Setting the difference in thermal expansion coefficient also suppresses the displacement in the tube axis direction when the cathode ray tube operates. This case will be described with reference to FIGS. 7 to 12. Fig. 7 is a timing chart showing the relationship between the short side frame and the support adjusting member when the cathode ray tube operates. Line 23 shows the time-temperature relationship diagram of the short-side frame, and line 24 shows the time-temperature relationship diagram of the support adjustment member. Figure 8 is a perspective view of the internal magnetic shield. The internal magnetic air shield 30 shown in the figure has a flat portion 31 for melting from the main body 30a and a skirt portion 32 formed by bending the flat portion 31. The main body 30a is formed in a box shape so as to surround the electron beam moving portion. Fig. 9 is a perspective view showing an embodiment of a shadow mask structure. The basic configuration of the shadow mask structure 33 shown in the figure is the same as that shown in Fig. 6. The long side frame 34 of the plate member is fixed to the short side frame 35 which is a support body, and is fixed to each of the long side frames 34. Shadow mask 36. Further, the short side frame 35 is fixed to support the adjustment member 37. In the figure, the support adjustment member 37 is illustrated as a surface, and the internal magnetic air shield 30 shown in FIG. 8 is mounted on the side of the skirt portion 32 so as to be covered by the mask structure 33, and Plan the inner part of the internal magnetic shield 30 (please read the note on the back and fill in the page) -1^^^^ ·1111111 A=0, ·11111111 . This paper size applies to the Chinese National Standard (CNS) A4 specification. (210 X 297 mm) 1258786 V. Description of the Invention (;/) 31 The support adjustment member 37 is welded to the shadow mask structure 33 so that both sides are fixed to each other. For example, the welded joint 38 of the flat portion 31 shown in Fig. 8 is superposed on the welded joint 39 of the support adjusting member 37 shown in Fig. 9 to be welded. Fig. 10 is a view showing an arrow A (Fig. 9) of the inner magnetic shield 3 and the mask frame 33 in the engaged state. In the figure, a part of the illustration of the inner magnetic shield skirt portion 32 is omitted, and the case where the flat portion 31 is engaged with the support adjusting member 37 can be seen. Fig. 11 is a cross-sectional view showing the I-I line (Fig. 9) in which the internal magnetic air shield 30 and the shadow mask member 33 are joined. As shown in this figure, the internal magnetic shield 30 is a connector electronic shield 40. Under the influence of the action of the cathode ray tube, as shown by the arrow iJ in Fig. 11, the electron beam is emitted from the electron gun, and the temperature inside the cathode ray tube starts to rise. Structurally, since the electron beam is scanned at 110% of the effective area of the shadow mask 36, an electron beam having a unilateral degree of about 5% of the electron beam exceeding the effective area will respectively protrude from the electron shield 40 at both ends. (arrow i). Therefore, the electron beam is projected on the electron shield 40 and the shadow mask 36 shortly after the operation of the cathode ray tube. Here, since the electronic shield 40 is joined so as to be welded to the internal magnetic shield 30, the temperature of the magnetic shield 30 after the electron beam is projected to the inside of the electronic shield 40' also rises. When the temperature of the internal magnetic shield 30 rises, the temperature of the support adjusting member 37 joined to the welded portion also rises. At this stage, the temperature of the short side frame 35 does not rise to a temperature close to the support adjusting member 37. The graph showing this state is the state in which the time t1 is the front state. Before the time t1, the temperature of the support adjusting member 37 is higher than that of the shorter side frame 35. 20 (Please read the notes on the back and fill out this page) .· 订--------- Line - This paper scale applies to China National Standard (CNS) A4 specification (210 X 297 mm) 1258786 V. (Description of the Invention) Fig. 12A is a view showing a displacement state of the short side frame 35 in a case where the temperature of the support adjustment member 37 is shorter than the temperature of the lower side frame 35 in the state in which the timing t1 is earlier. In the figure, the thermal expansion coefficient of the short side frame 35 and the support adjusting member 37 is equal (the same applies to Fig. 12B). If the support adjustment member 37 is not fixed to the short side frame 35, since the temperature of the support adjustment member 37 is shorter than the temperature of the side frame 35, the support adjustment member 37 and the portion of the short side frame 35 corresponding thereto are compared. Then, the extension caused by the thermal expansion of the support adjusting member 37 is made larger by the extension of the shorter side frame 35. Actually, since the support adjusting member 37 is fixed to the short side frame 35, the support adjusting member 37 becomes a force applied to the short side frame 35 in the stretching direction (arrow d). As a result, the short side frame 35 is curved in a concave shape as indicated by an arrow e, and the shadow mask 36 is displaced in a direction close to the fluorescent surface (a dotted line portion in Fig. 12A). Therefore, q値 will become smaller. The electronic shield 40 is exposed to a total of about 10% of the electron beam on both sides. In contrast, the shadow mask 36 is exposed by most of the electron beams. Thereby, the temperature of the shadow mask 36 rises, and the heat of the shadow mask 36 moves to the long side frame 34, and further moves to the short side frame 35. Therefore, as shown in Fig. 7 in the state before the time t1, the short side frame 35 is delayed in time with respect to the support adjustment member 37 in temperature rise. Since the heat from the long side frame 34 is continuously moved to the short side frame 35, the temperature of the short side frame 35 continues to rise, and at the time t1 shown in FIG. 7, the temperature of the short side frame 35 and the support adjusting member 37 are equal. Into a 21 L _____ _ This paper i scale applies China National Standard (CNS) A4 specifications (210 X 297 public) " (Please read the back of the note and then fill out this page) Order --------- line A7 1258786 V. INSTRUCTIONS (>C) (Please read the note on the back first? Then fill out this page) The temperature of the step continues to rise. This is because the heat transferred from the long side frame 34 to the short frame 35 is greater than the heat transferred to the support adjusting member 37 via the electronic shield 40 and the internal magnetic shield 30. As shown in Fig. 7, the temperature of the short side frame 35 continues to rise after the time t1, and is stabilized after reaching a predetermined temperature. On the other hand, as the temperature of the short side frame 35 rises, the heat of the short side frame 35 also moves to the support adjusting member 37. At this time, since the temperature of the support adjusting member 37 becomes higher than the temperature of the internal magnetic shield 30 joined thereto, the heat of the support adjusting member 37 is moved to the internal magnetic shield 30. As shown in Fig. 8, since the internal magnetic air shield 30 has a considerable surface area, the internal magnetic air shield 30 acts as a heat radiating plate, and the temperature rise of the support adjusting member 37 is suppressed. That is, even after the time t1 at which the temperature of the support adjusting member 37 and the short side frame 35 are equal, the temperature of the short side frame 35 continues to rise, and the support adjusting member 37 stops the temperature rise and maintains the stable state at a predetermined temperature. Therefore, after the time t1, the vertical relationship between the temperature of the support adjusting member 37 and the short side frame 35 is reversed, and the temperature of the short side frame 35 is set to be higher than the temperature of the support adjusting member 37. Fig. 12B is a displacement diagram of the short frame 35 in a state where the temperature of the short side frame 35 is higher than the temperature of the support adjusting member 37 in the state after the time t1 of Fig. 7. If the support adjustment member 37 is not fixed to the short side frame 35, since the temperature of the short side frame 35 is higher than the temperature of the support adjustment member 37, the support adjustment member 37 and the portion of the short side frame 35 corresponding thereto are compared. The extension of the thermal expansion of the short-side frame 35 will be more applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 public) than the 22 paper scales. 1258786 A7 B7 ............. .......... ' ... — ............-.-...-. .....-....--five, invention description ( > 1) The extension of the support adjustment member 37 is large. Actually, since the support adjusting member 37 is fixed to the short side frame 35, the support adjusting member 37 becomes a force applied to the short side frame 35 in the compression direction (arrow f). As a result, the short side frame 35 is curved in a convex shape as indicated by an arrow g, and the shadow mask 36 is displaced in a direction away from the fluorescent surface (a dotted line portion in Fig. 12B). Then, (1値 becomes large. In the case of Fig. 12B, if the thermal expansion coefficient of the support adjustment member 37 is much larger than the thermal expansion coefficient of the short side frame 35, as in the case of Fig. 12A, the support adjustment member 37 becomes the short side The frame 35 applies a force to the stretching direction (arrow d). Therefore, the short side frame 35 is curved into a concave shape as indicated by an arrow e, and the shadow mask 36 is displaced in a direction close to the fluorescent surface, thereby reducing The displacement of the tube axis direction. That is, by making the thermal expansion coefficient of the support adjusting member 37 larger than the thermal expansion coefficient of the short side frame 35, it is possible to prevent the plasticity of the shadow mask in the high temperature region in the production process such as the frit sealing process. The deformation can simultaneously suppress the displacement in the tube axis direction caused by the temperature difference between the short side frame 35 and the support adjusting member 37 in the action of the cathode ray tube. At this time, the thermal expansion coefficient of the support adjusting member 37 is a short side frame. It is preferable that the thermal expansion coefficient of 35 is 1.2 times or more, for example, SUS304 (thermal expansion coefficient 180X1 (T7/°C)) is used for the support adjustment member 37, and molybdenum chrome steel is used for the short side frame 35 (coefficient of thermal expansion 1 Further, when the thermal expansion coefficient of the support adjusting member 37 is equal to the thermal expansion coefficient of the short side frame 35, the temperature difference between the short side frame 35 and the support adjusting member 37 may occur as described above. Displacement in the direction of the tube axis, 23 This paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (please read the notes on the back and fill out this page) -·1111111^OJ11111111 · 1258786 A7 R7 Inventive Note 6) When the difference in thermal expansion coefficient is small, the above-described displacement phenomenon is difficult to be sufficiently suppressed. However, even in this case, since the rigidity of the short side frame 35 can be obtained, the comparison is not performed. The configuration of the support adjusting member 37 is further effective in suppressing the displacement of the shadow mask in the tube axis direction when the electron beam is emitted. (Embodiment 5) The above is the case where the cathode ray tube is operated to allow the shadow mask 36 to operate. Displacement in the direction close to the phosphor surface, so that the thermal expansion coefficient of the support adjustment member 37 is shorter, the thermal expansion coefficient of the side frame 35 is large, but the support can be adjusted. The spring constant of the member 37 in the longitudinal direction is set to be small. Thereby, the force of the support adjusting member 37 shown in Fig. 12B in the direction of the compression short side frame 35 (arrow f) can be alleviated, so that the shadow mask 36 can be reduced in the tube Figs. 13A to 13C are side views of the support adjusting member of the fifth embodiment in which the spring constant is reduced. The support adjusting members 22a to 22c shown in the figure are formed with protrusions in order to reduce the spring constant. Each of the projections is formed by bending a substantially central portion of the support adjustment member as seen on the side surface. The support adjustment member 22a of Fig. 13A forms an inverted V-shaped projection from the side, and the support adjustment member 22b shown in Fig. 13B. It is formed as an inverted U-shape or a protrusion on a semicircle from the side. The support adjusting member 22c shown in Fig. 13C is obtained by further adding a curved shape to the shape of the projection shown in Fig. 13A. In order to exert the spring effect, each support adjustment member relaxes the short side frame 35 24 This paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 public 1 ^ --------------- ----- —Set---------Line (please read the notes on the back and fill in this page) 1258786 V. Invention description (>') The direction of compression, in each figure The protrusions are preferably in the range of 5 to 50 mm in width and 5 to 50 mm in height h. Further, the spring constant of each of the support adjusting members in the longitudinal direction is preferably 1.47×10 N/mm or less. According to the constant, the cross-sectional area of each of the support adjusting members can be reduced. (Embodiment 6) This embodiment is another embodiment for preventing the variation of the time due to the passage of time. As long as the thermal expansion coefficients of the support adjustment member 37 and the long side frame 34 are the same, the electron beam orbital changes as the shadow mask surface approaches the time and passes away from the phosphor surface over time. In Fig. 7B, It shows the relationship between the time of one electron beam movement and the change of the electron beam orbit. The method is compared with the time-to-temperature relationship shown in Fig. 7A. The amount of electron beam movement up to time tO is caused by the electron beam protruding from the shadow mask at the beginning of the operation so that the shadow mask thermally expands, corresponding to the thermal expansion. The deformation of the frame occurs. Once the time tO is exceeded, the frame of the support adjustment member is high because the temperature of the support adjustment member is shorter, and the thermal expansion of the support adjustment member becomes larger than that of the short-side frame, so the shadow mask will go to Returning to the direction of the state before the thermal expansion, the amount of movement of the electron beam is temporarily reduced. Then, the temperature rise relative to the support adjustment member becomes slow, and the temperature rise rate of the short side frame is maintained and the temperature is maintained. When it rises, it is affected by the thermal expansion of the short-side frame, the shadow mask changes in the direction of thermal expansion, and the amount of electron beam movement increases. When the temperature of the support member and the short-side frame becomes the same at time t1, the amount of electron beam movement Change to 25 paper scales for China National Standard (CNS) A4 specifications (210 X 297 mm) (please read the notes on the back) Fill in this page again. · Order---------Line. A7 1258786 V. Invention description (:>々) Same as the initial time tO. After that, the amount of electron beam movement is gradually increased, and the electrons are gradually increased. The amount of beam movement will eventually reach stability. (Please read the note on the back and then fill out this page.) This change in the amount of beam movement can make adjustment of the TV group difficult. This embodiment suppresses the support member and the internal magnet. The heat conduction between the gas shields prevents the temperature difference between the support adjustment member and the short-side frame to which the support adjustment member is fixed, so that the amount of movement of the electron beam is stabilized. The embodiment shown in Fig. 14 is shown in Fig. 8. The flat portion 31 of the inner magnetic air shield 30 and the support adjustment member 37 are joined by the protruding portion. Fig. 14A is a perspective view showing the flat portion 31, and Fig. 14B is a cross-sectional view showing a Π line in Fig. 14A. In Figs. 14A and 14B, a projection portion 41 is formed in the flat portion 31 of the internal magnetic air shield 30. The projection 41 is provided with a recess so that the concave portion is formed in the flat portion 31, and the flat portion 31 is a portion that protrudes on the side of the support adjusting member 37. The 42 series shows the fusion splice point, and the projection 41 and the lower support adjustment member 37 are joined by welding. Thereby, as shown in FIG. 14B, a gap is formed between the lower surface of the flat portion 31 and the upper surface of the support adjusting member 37, and the thermal conductivity is interposed between the inner magnetic air shield 30 and the support adjusting member 37. Low low thermal conductivity member 43. When the internal magnetic shield 30 and the support adjusting member 37 are made of iron, the low thermal conductivity member 43 can be, for example, SUS304. According to the embodiment shown in the figure, since the heat conduction between the flat portion 31 and the support adjusting member 37 is suppressed, the electronic shield 40 and the internal magnetic shield 30 can be blocked as described in the fourth embodiment as illustrated in FIG. The heat transfer to the support adjustment member 37 is transmitted. Thereby, the temperature rise of the support adjusting member 37 is completely dependent on the heat conduction from the short side frame 35. 26 This paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 mm). A7 1258786 ___B7___ V. Description of the invention (/t) On the other hand, the above-described manner is suppressed between the flat portion 31 and the support adjustment member 37. In the heat conduction, heat transfer from the support adjustment member 37 to the flat portion 31 can be suppressed, and the heat radiation effect of the internal magnetic shield 30 described in the fourth embodiment is also suppressed. Here, Fig. 17A shows a time-temperature relationship diagram of the frame and the support adjusting member in the operation of the cathode ray tube of the present embodiment, and Fig. 17B shows the timing of the operation of the cathode ray tube according to the present embodiment. Quantity diagram. The curve indicated by the broken line in Fig. 17B is a comparison diagram for comparison, which corresponds to the relationship of the electron beam movement amount at the time shown in Fig. 7B, that is, as shown in Fig. 17A, the short side frame 35 and the support adjustment The temperature of the member 37 rises at the same ascending speed after the operation of the cathode ray tube, and after the time t1, the support adjusting member 37 and the short side frame 35 are stabilized at the same temperature. Therefore, as shown in Fig. 17B, after the time t0, the amount of movement of the electron beam becomes constant and stabilizes. In the present embodiment, as shown in Fig. 14B, the contact area between the flat portion 31 and the support adjusting member 37 is the area of the joint portion of the projection portion 41. The smaller the contact area, the more the heat conduction between the flat portion 31 and the support adjusting member 37 can be suppressed. Therefore, the contact area is preferably 25% or less of the area of one side of the support member 37, and more preferably 5% or less. Similarly, in the embodiment shown in Fig. 15, the flat portion 31 of the internal magnetic shield 30 shown in Fig. 8 and the support adjusting member 37 are joined to each other through the projection. Fig. 15A is a perspective view showing the flat portion 31, and Fig. 15B is a cross-sectional view showing the ΠΙ line of Fig. 15A. In Figure 15A, B, the internal magnetic shield 27 is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm). (Please read the note on the back and fill out this page) · Order --- ------Line A7 1258786 V. In the plane portion 31 of the invention (7^) 30, a projection 45 is formed. The projection 45 is provided with a recess such that a recess is formed in a portion between the slits 44, and the flat portion 31 is formed to protrude from the support adjustment member 37 side. The 45 series shows the fusion splice, and the projection 45 and the support adjustment member 37 therebelow are joined by welding. Also in the present embodiment, the low thermal conductivity member 46 is interposed between the flat portion 31 and the wiping adjustment member 37. The ratio of the contact area of the material of the low thermal conductivity member 46 and the projection 45 is the same as that of the foregoing embodiment. That is, the configuration of the present embodiment other than the method of forming the protruding portion is the same as that of the above-described embodiment shown in Fig. 14, and the same effect can be obtained. Similarly, in the embodiment shown in Fig. 16, the flat portion 31 and the support adjusting member 37 are joined to each other through the projection. Fig. 16A is a perspective view showing the support adjusting member 37, and Fig. 16B is a cross-sectional view showing the line IV-IV of Fig. 16A. In Figs. 16A and 16B, a protrusion 47 is formed in the support adjustment member 37. When the support adjustment member 37 is viewed from the back side, the projection 47 is provided with a recess so that the support adjustment member 37 forms a concave portion, and the support adjustment member 37 is a portion that protrudes on the side of the flat portion 31. The 48 series shows the fusion splice point, and the projection 47 is joined to the flat portion 31 thereon by welding. Also in the present embodiment, the low thermal conductivity member 49 is interposed between the flat portion 31 and the support adjusting member 37. The ratio of the contact area of the material of the low thermal conductivity member 49 and the projection 47 is the same as that of the foregoing embodiment. That is, the configuration of the present embodiment other than the method of forming the protruding portion is the same as that of the above-described embodiment shown in Fig. 14, and the same effect can be obtained. In the embodiment shown in FIGS. 14 to 16, the example in which the flat portion 31 and the support adjusting member 37 are joined by the protruding portion is described, but the Chinese National Standard (CNS) A4 specification may be applied to the paper size. (210 X 297 mm) (Please read the notes on the back and fill out this page) · Order --------- Line - A7 1258786 V. Invention Description (Please read the notes on the back and fill in the form) In order to form a projection, a heat insulating material such as ceramic is interposed between the flat portion 31 and the support adjustment member 37 to be joined. This configuration is disadvantageous in achieving an easy and reliable joint as compared with the embodiment shown in Figs. 13 to 15, but since the flat portion 31 and the support adjusting member 37 do not directly contact each other, the heat insulation is performed. The effect will be more certain. Further, when the contact area between the flat portion 31 and the support adjusting member 37 is small and a sufficient heat insulating effect can be exhibited, the low thermal conductivity member 49 may not be interposed between the flat portion 31 and the support adjusting member 37. Further, in the embodiment shown in Fig. 6, although the example in which the high-expansion support adjusting member 22 is fixed to the inside of the frame 14, the thermal expansion coefficient is fixed to the surface 14b of the frame 14 as compared with the frame 14 The same effect can be obtained in the case of a low-low expansion support adjusting member. At this time, the low expansion support adjusting member can use, for example, a 36% Ni-Fe alloy. Further, although the support adjusting member is fixed to the frame 14 of the embodiment shown in Fig. 2, the same effect can be obtained by fixing the support adjusting member to the frame 18 of the embodiment shown in Fig. 3. . Further, when the shadow mask is placed on one axis, a gap is formed in the lateral direction, so that the magnetic flux of the geomagnetism easily passes, and as a result, the electron beam is biased to cause a color shift phenomenon. In each of the above embodiments, the gap in the lateral direction can be shielded by the iron-based material by forming the crank-shaped step portion in the frame, so that the magnetic shielding effect can be obtained. Further, in each of the embodiments, the case where the spring member 12 is attached to the frames μ and 18 by the spring mounting member n will be described. However, the spring member 12 may be directly attached to the frames 14 and 18. Spring assembly
A7 1258786 五、發明說明（>ff ) (請先閱讀背面之注意事項再填寫本頁) 件21上。此時之安裝部分可爲曲柄狀之高低差部分所形成 之凹陷部分或是凹陷部分的外部，而有無須彈簧裝設構件 的效果。 又’在框架14之對於框架7之固接部分方面，係以將 框架14加以彎曲的例子做說明，惟也可讓框架μ維持直 線狀而固接到框架7。 又’於框架14、18所形成之曲柄狀之高低差部分的形 狀雖以大致C字型爲例來說明，惟亦可爲倒v字型（山型) 或倒U字型(圓弧型）。 又’雖舉出蔭罩構體以四個彈簧構件來懸架之例子做 說明’惟以三個彈簧構件來懸架也可得到同樣的效果。 又，在前述實施形態中，雖舉出在板狀構件之上下框 架的上面固接蔭罩的例子做說明，惟蔭罩未必要固接於框 架之上面，即使未固接於框架之上部亦無妨。例如將蔭罩 端部加以彎曲，而將此彎曲部固接於框架側面之上部亦可 〇 [產業上可利用性] 如以上所述，依據本發明，由於在形成蔭罩構體之一 對的框架處形成曲柄狀之高低差部分，乃可減低蔭罩構體 之內力力矩，即使電子束突射造成蔭罩之熱膨脹，仍可抑 制蔭罩在管軸方向之位移，q値偏差也可被抑制。又，藉 由支撐體之曲柄狀的高低差部分，能以鐵系材料來遮蔽橫 方向之空隙，所以可改善磁氣特性。是以本發明在電視顯 像機、電腦顯示器等所使用之蔭罩型之陰極射線管上也能 30 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 1258786 A7 ___—— — —B7 — 五、發明說明（Μ ) 被使用。 [符號說明] 6,36 蔭罩 7,34 板狀構件之框架(長邊框架) 14,18,20,35 支撐體之框架(短邊框架） 11 彈簧裝設構件 12 彈簧構件 12a 安裝孔 15 高低差 16,17,19 蔭罩構體 18c 延伸部 22,22a,22b,22c,37 支撐調整構件 30 內部磁氣屏蔽 31 平面部 32 裙擺部 40 電子屏蔽 41,45,47 突起部 43,46,49 低熱傳導構件 44 狹縫 -------------Aw---I----^--------I —Awl (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）A7 1258786 V. INSTRUCTIONS (>ff) (Please read the notes on the back and fill out this page) on page 21. The mounting portion at this time may be a recessed portion formed by the crank-shaped step portion or the outside of the recessed portion, and the effect of the spring mounting member is required. Further, in the case of the fixing portion of the frame 14 to the frame 7, the frame 14 is bent, but the frame μ can be fixed in a straight line to be fixed to the frame 7. Further, the shape of the crank-shaped step portion formed by the frames 14 and 18 is described by taking a substantially C-shape as an example, but it may be an inverted v-shape (mountain type) or an inverted U-shape (arc type). ). Further, although the example in which the shadow mask structure is suspended by four spring members is described, the same effect can be obtained by suspending the three spring members. Further, in the above-described embodiment, an example in which the shadow mask is fixed to the upper surface of the lower frame of the plate member is described, but the shadow mask is not necessarily fixed to the upper surface of the frame, even if it is not fixed to the upper portion of the frame. No problem. For example, the end portion of the shadow mask is bent, and the bent portion is fixed to the upper portion of the side surface of the frame. [Industrial Applicability] As described above, according to the present invention, since one pair of the shadow mask structure is formed The portion of the frame is formed with a crank-like height difference, which can reduce the internal force moment of the shadow mask structure. Even if the electron beam protrudes to cause thermal expansion of the shadow mask, the displacement of the shadow mask in the tube axis direction can be suppressed, and the deviation can also be suppressed. Further, by the crank-like height difference portion of the support, the gap in the lateral direction can be shielded by the iron-based material, so that the magnetic characteristics can be improved. According to the present invention, it is also applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) on a cathode ray tube of a shadow mask type used in a television display, a computer monitor, etc. 1258786 A7 ___ — — —B7 — V. Description of the invention (Μ) is used. [Description] 6,36 Shadow mask 7,34 Frame of plate member (long side frame) 14,18,20,35 Frame of support body (short side frame) 11 Spring mounting member 12 Spring member 12a Mounting hole 15 Height difference 16, 17, 19 Shadow mask body 18c Extension 22, 22a, 22b, 22c, 37 Support adjustment member 30 Internal magnetic shield 31 Flat portion 32 Skirt 40 Electronic shield 41, 45, 47 Projection 43, 46,49 Low heat conduction member 44 Slit -------------Aw---I----^--------I-Awl (Please read the back of the note first) Please fill out this page again. This paper size is applicable to China National Standard (CNS) A4 specification (210 X 297 mm).