M365485 五、新型說明： 【新型所屬之技術領域】 本發明係關於燈罩之結構，尤指一種安裝在以發先二極— (LightEmittingDiode)作為光源之背光模組上的燈罩二1體 4 Μ賴'由 發明能有效地提高背光模組之出光均勻度，解触光源間距過袁 而造成的明暗不均的現象。 °、 【先前技術】 液晶顯示H產品具有體雜薄、低耗奴低電磁波等優點， 已逐漸取代-般傳統映射管顯示器產品，日漸普及成為顯:器主 流’液晶顯7FH之顯示方式’主要储由液晶層控制各個圖元位 置之光線的透射率，使液晶顯示器能正確地顯示影像，由於液晶 為-種非自發細7F材質，目此通常需要外部光軌相應之導光 裝置，如背光模組，一般而言，為考量「輕」、「薄」、「省電」 等使用者之需求’現今的背紐組多半以使關光式設計為主， -般常以燈管或LED作為紐’關面縣的方式將光線送入一 導光板，以利用導光板的設計，來加強對光線行進方向的控制。 請參考第1圖，係習知技術所使用之背光模組結構的示意圖， 該背光模組10包含有光源12、燈罩14、反光片15及導光板16，其 中導光板16包括一入光面161，與入光面161相鄰之一出光面^】， 及與出光面162相對應之一底面M3 ;該光源12係設在對應於導光 板16之入光面161之位置，該光源12為複數個呈等間距排列的發光 M365485 二極體，係容納於燈罩_，各該發光二極體發射出之光㈣由 該入光獲進人導細6後’於導細6时纽射作用，且透 過該導光板丨6之引導作用，導引光線之傳輸方向，並將其轉換成 平面光，而從導光板之出光面162射出；該反光片15係披覆於燈 罩I4内’⑽f光線充分反射至導細6，祕發光二極體相較 於傳統燈管，具有㈣的亮度，且所發㈣之光線具有較窄的發 散角’為了防止背光模組過亮，—般往往會減少燈罩14中發光二 極體的數量，或增加罐钟發光二鋪輯_距離，然 而此作法’教導光板16之入光面161 一側容易出現光學暗區 該光學暗!117主要分佈於二相鄰料二極體之間，將對背光 板、、且10之輝度及出光均勻度造成極大的影響。為此，雖有許多業 者及研究人員投入導光板之造型設計，如：將導光板之入光面設 計為具有_狀或是連續波錄溝槽，關使其财料光線及 增加輝度的效果，惟，並無法有效解決呈制距期·光二極 體間所產生的光學暗區·題，故纽善絲不彰，仍存在許多 尚待改進的空間。 因此’如何設計及製造出—_雜構，能錢針對該光源 12所產生的光學暗區咖問題，進行研究及改良，舰合該等入 光面⑹料之導絲16，有效降低明暗不均勻的光學暗區⑽ 象亚大巾田提升導光板16之輝度及出光均句度，即成為本創作在 此欲探討之一重要課題。 M365485 【新型内容】 有鑑於習知燈罩結構之諸多缺失，創作人乃依多年之實務經 驗，並經過長久的努力研究與實驗，終於研發出本創作之一種以 發光二極體作為光源的背光模組的燈罩結構。 本創作之一目的，係提供一種燈罩，該燈罩係使用在以發光 ^ 二極體作為光源之背光模組上，包括一電路板、一反光片與一金 屬罩體’其t該金屬罩體係由—金屬#體彎折而成，至少具有兩 Φ 側面及一底面，以形成一容置空間，該容置空間係對應於一導光 板之一側為緣，S亥反光片的縱剖面係呈連續波浪狀，以形成複數 個凹陷處，且被容納在該容置空間内，另，該電路板係固定在該 金屬罩體上，且該電路板上設有複數個發光二極體，各該發光二 極體能分別對應於該反光片之各凹陷處，以使各該發光二極體所 ' 發射出的光線能分別被該反光片之各凹陷處充分反射至該導光板 . 中。如此，該反光片即能將未直接射入該導光板的光線充分反射 Φ 至該導光板，以減少光耗損，有效降低導光板上明暗不均勻的光 學暗區現象，並大幅增加導光板之輝度及出光均勻度。 本創作之另一目的，係提供一種燈罩，該燈罩係使用在以發 、光二極體作為光源之背光模組上，包括一電路板、一反光片與_ -金屬罩體’其中該金屬罩體係由一金屬片體彎折而成，至少具有 兩侧面及一底面，以形成一容置空間，該容置空間係對應於一導 光板之一側端緣，該反光片的縱剖面係呈連續波浪狀，以形成複 數個凹陷處，該反光片之一側面係貼附在該容置空間内之底面， 5 M365485 該電路板係固定在該容置空間内之任一側面上，該電路板上設有 複數個發光二極體，各該發光二極體能分麟應於該反光片之各 凹陷處，以使各該發光二極體所發射出的光線能分別被該反光片 之各凹陷處充分反射至該導絲巾。紐罩肖包括—平板狀反光 片，該平板狀反光片係貼附在該電路板上，且其上對應於各該發 光二極體之位置分卿設有—細，使得各該發光二極體能穿過 對應孔洞伸人各凹陷處’以使各該發光二極體所發㈣的光線能 分別被該反光片之各凹陷處充分反射至讀導光板中。 本創作之又一目的，係提供一種燈罩，該燈罩係使用在以發 光二極體作為光源之背光模組上，包括一電路板、一反光片與一 金屬罩體，其中該金屬罩體係由一金屬片體彎折而成，至少具有 兩側面及一底面，以形成一容置空間，該容置空間係對應於一導 光板之一側端緣，該電路板係貼附於該容置空間之底面，且該電 路板上設有複數個發光二極體，該反光片的縱剖面係呈連續波浪 狀結構，以形成複數個凹陷處，該反光片係貼附在該電路板上， 且該反光片之各凹陷處上對應於各該發光二極體之位置分別開設 有一孔洞，使得各該發光二極體能穿過對應孔洞伸入各凹陷處， 以使各該發光二極體所發射出的光線能分別被該反光片之各凹陷 處充分反射至該導光板中。如此，各該發光二極體所產生之熱量， 即能經由該反光片，快速散熱至金屬罩體之外側，而不致傳導至 該電路板，故能有效提高該電路板之使用壽命。 本創作之又另一目的，係提供一種燈罩，該燈罩係使用在以 M365485 發光二極體作為光源之背絲組上，包括_電路板、—反光片與 孟屬罩體’其中該金屬罩體係由一金屬片體彎折而成，至少具 有兩側面及-底面，以形成一容置空間，該容置空間係對應於一 導光板之-側端緣，該反光片的縱剖面係呈連續波浪狀結構，以 ' 形成複數個凹陷處，該反光片係貼附在該容置空間之底面，而該 ‘電路板係固定於該金屬罩體外側之底面，且在該金屬罩體之底面 與該反光片對應於各該發光二極體之位置上分別設有一孔洞，使 • 得各該發光二極體能穿過對應孔洞伸入各凹陷處，以使各該發光 二極體所發射出的光線能分別被該反光片之各凹陷處充分反射至 "亥‘光板中。如此，該電路板上各該發光二極體所產生之熱量， 忐經由該反光片，快速散熱至金屬罩體之外側，而不致傳導至該 電路板’故能有效提高該電路板之使用壽命。 . 本創作之又另一目的，係提供一種燈罩，該燈罩係使用在以 發光二極體作為光源之背光模組上，包括一電路板、一反光片與 鲁一金屬罩體，其中該金屬罩體係由一金屬片體彎折而成，至少具 有兩侧面及一底面，以形成一容置空間，該容置空間係對應於一 導光板之一側端緣，該反光片的縱剖面係呈連續波浪狀結構，以 、开》成複數個凹陷處，且該反光片係貼附在該容置空間之底面，而 '該電路板係固定於該金屬罩體外之一侧面上’該金屬罩體之側面 對應於各該發光二極體之位置上分別設有一孔洞，使得各該發光 二極體能穿過對應孔洞伸入各凹陷處，以使各該發光二極體所發 射出的光線能分別被該反光片之各凹陷處充分反射至該導光板 7 M365485 中。如此’該電路板上各該發光二極體所產生之缝，能經由該 反光片’快速散熱至金屬罩體之外側，而不致傳導至該電路板， 故能有效提高該電路板之使用壽命。該燈罩尚包括—平板狀反光 片，該平板狀反光片係貼附在該金屬罩體内之—側面上，且其上 對應於各該發光二極體之位置分糊設有—制，使得各該發光 二極體能？過對應孔洞伸人各凹陷處，以使各該發光二極體所發 射出的光魏分職該反光狀各m績充分反射至該導光板 中0 本創作之又一目的，係提供一種燈罩，該燈罩係使用在以發 光二極體作為光源之背光模組上，包括一電路板、一反光片與一 金屬罩體，其中該金屬罩體係由一金屬片體彎折而成，至少具有 兩側面及一底面，以形成一容置空間，該容置空間係對應於一導 光板之一側端緣，該電路板係固定於該容置空間之底面，且該電 路板上設有複數個發光二極體，該反光片係單片沖壓或一體成 型’其橫剖面係呈凹陷狀’該反光片的橫向外侧係貼附在該金屬 罩體之内側面’且該反光片係貼附在該電路板上’該反光片上對 應於各該發光二極體之位置分別開設有一孔洞，使得各該發光二 極體能穿過對應孔洞伸入凹陷處，以使各該發光二極體所發射出 的光線能分別被該反光片之凹陷處充分反射至該導光板中。如 此’各該發光二極體所產生之熱量’即能經由該反光片，快速散 熱至金屬罩體之外侧，而不致傳導至該電路板，故能有效提高該 電路板之使用壽命。 M365485 本創作之又一目的，係提供一種燈罩’該燈罩係使用在以發 光二極體作為光源之背光模組上’包括一電路板、一反光片與一 金屬罩體，其中該金屬罩體係由一金屬片體彎折而成，至少具有 兩侧面及一底面、以形成一容置空間’該容置空間係對應於一導 . 光板之一側端緣，該電路板係固定於該金屬罩體外側之底面，且 該電路板上設有複數個發光二極體，該反光片係單片沖壓或一體 成型，其橫剖面係呈凹陷狀，該反光片的橫向外側係貼附在該金 Φ 屬罩體之内側面，該反光片係貼附在該容置空間之底面，且在該 金屬罩體之底面與該反光片對應於各該發光二極體之位置上分別 設有一孔洞，使得各該發光二極體能穿過對應孔洞伸入凹陷處， 以使各該發光二極體所發射出的光線能分別被該反光片之凹陷處 充分反射至該導光板中。如此，各該發光二極體所產生之熱量， 即能經由該反光片’快速散熱至金屬罩體之外侧，而不致傳導至 該電路板，故能有效提高該電路板之使用壽命。 • 為便貴審查委員能對本創作之目的、形狀、構造裝置特徵 及其功效，做更進一步之認識與瞭解’茲舉實施例配合圖式，詳 細說明如下： - 【實施方式】 本創作係一種以發光二極體作為光源的背光模組的燈罩結 構，請參閱第2圖所示’在本創作之第—較佳實施例中，該燈罩 20包括-金屬罩體2卜-反光片22與—電路板24，其中該金屬 M365485 罩體21係由-金屬片體彎折而成，至少具有兩側面及—底面，以 形成一容置空間，該容置空間係對應於—導光板25之一側端緣； 在本創作之下列較佳實施例中，係以該導光板25之入光面被設計 成水平面為例，加以說明’惟，本發明在實際施作時，並不侷限 於此，该導光板25之入光面亦能被設計成具有鋸齒狀或波浪狀的 溝槽，以期透過鋸齒狀或波浪狀的溝槽，提高該導光板25聚集光 線及增加輝度的能力及效果，·該電路板24係貼附於該容置空間之 底面，且該電路板24上設有複數個發光二極體241，該反光片22 係單片沖壓或一體成型，該反光片22的縱剖面係呈連續波浪狀， 以形成複數個凹陷處221，該反光片22係貼附在該電路板24上， 且該反光片22之各凹陷處221上對應於各該發光二極體241之位 置分別開設有一孔洞222’使得各該發光二極體241能穿過各該對 應孔洞222伸入各凹陷處221 ’以使各該發光二極體241所發射出 的光線能分別被該反光片22之各凹陷處221充分反射至該導光板 25中。如此，即可將光線充分反射至該導光板25，減少光耗損， 降低明暗不均勻的光學暗區現象，並增加該導光板25之輝度及出 光均勻度。在該第一較佳實施例中，該反光片22上對應於各凹陷 處221的橫剖面係呈凹陷狀，且該反光片22的橫向外側係貼附在 该金屬罩體21之内側面，以期各該發光二極體241所發射的光線 均能被該反光片22充分反射至該導光板25，以減少光耗損，有 效提升該導光板25之輝度及出光均勻度。 睛參閱第3圖所示，在本創作之第二較佳實施例中，該燈罩 M365485 30包括一金屬罩體31、一反光片32與一電路板34，其中該金屬 罩體31係由一金屬片體彎折而成，至少具有兩側面及一底面，以 形成一谷置空間，该谷置空間係對應於一導光板35之一側端緣， 該電路板34係貼附於該容置空間之底面，且該電路板34上設有 • 複數個發光二極體341，該反光片32係由一片體彎折而成連續波 • 浪狀結構，以形成複數個凹陷處321，該反光片32係貼附在該電 路板34上，且該反光片32之各凹陷處321上對應於各該發光二 φ 極體341之位置分別開設有一孔洞322，使得各該發光二極體341 能穿過各該對應孔洞322伸入各凹陷處321，以使各該發光二極體 341所發射出的光線能分別被該反光片32之各凹陷處32ι充分反 射至該導光板35中。如此，各該發光二極體341所產生之熱量， 即能經由該反光片32，快速散熱至金屬罩體31之外側，而不致傳 - 導至該電路板34，故能有效提高該電路板34之使用壽命。在該第 二較佳實施例中，該燈罩30尚包括至少一平板狀反光片33，在第 籲 3中係以平板狀反光片33為例’該平板狀反光片33係貼附在 該金屬罩體31内侧之任一側面’以期將各該發光二極體糾所發 射的光線及該反光片32所反射的錢均能充分反射至該導光板 ‘ 35 ’以減少光耗損’有效提升該導光板35之輝度及出光均句度， -降低該導光板35上明暗不均勻的光學暗區現象。 請參閱第4晒示’在本創作之第三健實施例巾，該燈罩 仞包括-金屬罩體4卜一反光片42與一電路板44，其中該金屬 罩體41係由-金屬片體彎折而成，至少具有兩側面及一底面，以 11 M365485 形成一容置空間，該容置空間係對應於一導光板45之一側端緣， 該反光片42係單片沖壓或一體成型，該反光片42的縱剖面係呈 連續波浪狀結構，以形成複數個凹陷處421，該反光片42係貼附 在該容置空間之底面，而該電路板44係固定於該金屬罩體41外 側之底面，且在該金屬罩體41之底面與該反光片42對應於各該 發光二極體441之位置上分別設有一孔洞422，使得各該發光二極 體441能穿過各該對應孔洞422伸入各凹陷處421，以使各該發光 二極體441所發射出的光線能分別被該反光片42之各凹陷處421 充分反射至該導光板45中。如此，該電路板44上各該發光二極 體441所產生之熱量，能經由該反光片42，快速散熱至金屬罩體 之外側，而不致傳導至該電路板44，故能有效提高該電路板私 之使用筹命。在該第三較佳實施例中，該燈罩4〇尚包括至少一平 板狀反光片43，在第4圖中係以—平板狀反光片43為例，該平板 狀反光片43係貼附在該金屬罩體41 _之任—側面，或該反光 片42上對應於各凹陷處421的橫剖面亦可呈凹陷狀，且該反光片 42的橫向外側係貼附在該金屬罩體41之内側面，以期將各該發光 -極體441所發射的光線及該反光片42所反射的光線均能充分反 射至該導光板45，以減少光耗損，有效提升該導光板45之輝度及 出光均勻度。 請參閱第5 ®所示’在本創作之第四較佳實補巾，該燈罩 包括一金屬罩體51、—反光片 罩體51係由一金屬片體彎折而成 52與一電路板54 ’其中該金屬 ，至少具有兩側面及一底面，以 12 M365485 形成-谷置空間，該容置空間係對應於一導光板％之一側端緣， 该反光片52係由-體彎折而成連續波浪狀，⑽成複數個凹陷 處521，該反光片52之-側面係貼附在該容置空間内之底面，該 電路板54係固定在該容置空間内之任一側面上，該電路板54上 ‘設有複數㈣光二極體541 ’各歸光二極體541能分麟應於該 -反光片52之各凹陷處521，以使各該發光二極體541所發射出的 光線此分別被该反光片52之各凹陷處521充分反射至該導光板55 • 中。如此’即可將光線充分反射至該導光板55，減少光耗損，降 低該導光板55上明暗不均勻的光學暗區現象，並增加該導光板％ 之輝度及itj光均句度。另，請參閱第6圖所示，關式為本創作 之第四較佳實施例之立體示意圖。 請參閱第7圖所示，在本創作之第五較佳實施例中，該燈罩 60包括一金屬罩體61、一反光片62與一電路板64，其中該金屬 ' 罩體61係由一金屬片體彎折而成，至少具有兩側面及-底面，以 • 形成一容置空間，該容置空間係對應於一導光板65之一側端緣， s亥反光片62係由一片體’考折而成連續波浪狀，以形成複數個凹陷 處621，該反光片62之一側面係貼附在該容置空間内之底面，該 .電路板64係固定在該容置空間内之任一側面上，該電路板64上 •設有複數個發光二極體64丨，各該發光二極體641能分別對應於該 反光片62之各凹陷處621 ’以使各該發光二極體641所發射出的 光線能分別被該反光片62之各凹陷處621充分反射至該導光板65 中。在該第五較佳實施例中’該燈罩60尚包括至少一平板狀反光 13 M365485 片63，在第7圖中係以一平板狀反先片63為例，該平板狀反光片 63係貼附在該電路板64上，且其上對應於各該發光二極體641 之位置分別開没有一孔洞622 ’使付各該發光二極體641能穿過各 該對應孔洞622伸入各凹陷處621 ’以期將各該發光二極體641 所發射的光線及該反光片62所反射的光線均能充分反射至該導光 板65 ’以減少光耗損’有效提升該導光板65之輝度及出光均勻度。 請參閱第8圖所示，在本創作之第六較佳實施例中，該燈罩 70包括一金屬罩體71、一反光片72與一電路板74 ,其中該金屬 罩體71係由-金屬片體彎折而成’至少具有兩側面及—底面，以 形成一容置空間，該容置空間係對應於一導光板75之一側端緣， 該反光片72係由-片體彎折喊連續波浪狀結構，以形成複數個 凹陷處72卜該反光片72係_在該容置空間之底面，該電路板 74係固定於該金屬罩體71外之—側面上，該金屬罩體71之側面 對應於各該發光二極體741之位置上分別設有一孔洞722，使得各 該發光二極體741能穿過各該對應孔洞722伸入各凹陷處721，以 使各該發光二極體741所發射出的光線能分別被該反光片72之各 凹陷處721充分反射至該導光板75巾。如此，該電路板％上各 “發光一極體741所產生之熱量，能經由該反光片72，快速散熱 至金屬罩體71之外側，而不致傳導至該電路板％，故能有效提高 該電路板74之使用壽命。如此，即可將光線充分反射至該導光板 光耗損#低導光板75上0树不均自的光學暗區現象， 有效提升該導光板75之輝度及出光均勻度。 14 M365485 請參閱第9圖所示’在本創作之第七較佳實施例中，該燈罩 80包括-金屬罩體8卜-反光片82與—電路板84，其中該金屬 罩體81係由-金屬片體彎折而成，至少具有兩侧面及一底面，以 形成-容置空間’該容置空間係對應於_導光板85之一側端緣， • 教光片82係由—片崎折而成連續波浪狀結構，以形成複數個 凹陷處821，該反光片82係貼附在該容置空間之底面，該電路板 糾係固定於該金屬罩體81外之一側面上，且該金屬罩體幻之側 φ面對應於各該發光二極體841之位置上分別設有-孔洞822，使得 各該發光二極體841能穿過各該對應孔洞822伸入各凹陷處821， 以使各該發光二極體841所發㈣的親能分別被該反光片82之 各凹陷處821充分反射至該導光板85巾。如此，該電路板84上 各該發光二極體841所產生之熱量，能經由該反光片82，快速散 絲金屬罩體81之外側，而猶料至該電路板84，故能有效提 二。亥電路板84之使用胥命。在該第七較佳實施例中，該燈罩 •尚包括至平板狀反光片83 ’在第9圖中係以—平板狀反光片 83為例’各該平板狀反光片Μ係貼_該金屬罩體81内之一側 面上’且其上對應於各該發光二極體841之位置分別開設有一孔 洞使知各5亥發光二極體841能穿過對應孔洞伸入各凹陷處821， j期將各賴^二極體841所發射的光線及該反光片82所反射的 光線均能充分反射至該導光板85，以降低導光板85上明暗不均句 的光學暗區縣，並減少光耗損，有效提升該導歧％之輝度及 出光均勻度。 15 M365485 請參閱第ίο圖所示，在本創作之第八較佳實施例中，該燈罩 100包括一電路板104、一反光片102與一金屬罩體1〇1，其中該 金屬罩體1G1係由-金；I#體彎折而成，至少具有賴面及一底 面，以形成一容置空間，該容置空間係對應於一導光板1〇5之一 側端緣，該電路板104係固定於該容置空間之底面，且該電路板 104上设有複數個發光二極體1〇41，該反光片1〇2係單片沖壓或 一體成型，其橫剖面係呈凹陷狀，該反光片1〇2的橫向外側係貼 附在該金屬罩體101之内側面，且該反光片1〇2係貼附在該電路 板104上，該反光片1〇2上對應於各該發光二極體1〇41之位置分 別開设有一孔洞1022’使得各該發光二極體1〇4i能穿過對應孔洞 1022伸入凹陷狀處，以使各該發光二極體1〇41所發射出的光線能 分別被該反光片102之凹陷狀處充分反射至該導光板1〇5中。如 此，各該發光二極體1041所產生之熱量，即能經由該反光片1〇2， 快速散熱至金屬罩體101之外侧，而不致傳導至該電路板1〇4，故 能有效提高該電路板104之使用壽命。 請參閱第11圖所示’在本創作之第九較佳實施例中，該燈罩 110包括一電路板114、一反光片112與一金屬罩體111，其中該 金屬罩體111係由一金屬片體彎折而成，至少具有兩側面及一底 面，以形成一容置空間，該容置空間係對應於一導光板U5之一 側端緣，該電路板114係固定於該金屬罩體111外側之底面，且 該電路板114上設有複數個發光二極體H41，該反光片112係單 片沖壓或一體成型，其橫剖面係呈凹陷狀，該反光片112的橫向 16 M365485 外側係貼附在該金屬罩體ill之内側面，該反光片112係貼附在 該谷置空間之底面，且在該金屬罩體1U之底面與該反光片112 對應於各S亥發光二極體1141之位置上分別設有一孔洞1122，使得 各該發光二極體1141能穿過對應孔洞1122伸入凹陷狀處，以使 '各該發光一極體1141所發射出的光線能分別被該反光片112之凹 .陷狀處充分反射至該導光板115巾。如此，各該發光二極體ιΐ4ι .所產生之熱量’即能經由該反光片112，快速散熱至金屬罩體⑴ _之外側，而*致傳導至該電路板114，故能有效提高該電路板114 之使用壽命。 、，又4述該電路板之gj定位置，係可為該容置空間内側之該 反光片上、該反光片與該金屬罩體之間、該金屬罩體外側...等， =疋位置係可舰贿罩_之設計，而更換實施各種不同之 固定位置’只要該等發光二極體，能分珊應於該反光片之各凹 陷處，以使各該發光二極體所發射出的光線能分別被該反光片之 _ 2陷處充分反射至該導域巾，即為本創作所述之電 路板貼附 ^ ’以上職，僅騎創作之較佳賜實關，惟本創作的 f特徵並不舰於此’凡任何熟悉該項技藝者，在本創作領域 I可姆思及之變化或修飾1可涵蓋在以下本案之專利範圍 【圖式簡單說明】 M365485 第1圖係習知背光模組之立體干 第2圖係本創作之第— ％、圖， 第3圖係本創作之第^ ：：，例之剖面示意圖； 第崎創作之=施例之剖面示意圖 第巧係本創作之第示意圖 =係本創作之第四較佳實施例之立體示意圖 ί圖係本創作之紅較佳實施例之剖面示意圖 弟圖係本創作之第六較佳實施例之剖面示意圖 Γ圖係本創作之第七較佳實施例之剖面示意圖， f 10圖係本創作之第八較佳實施例之剖面示意圖；及 弟11圖係本創作之第九較佳實施例之剖面示意圖。 【主要元件符號說明】 燈罩 …20、 30、 40 、50 '60 、70、 80、 100、 110 金屬罩體 ...21 > 31、 41 、51 、61 、7卜 8卜 101 ' 111 反光片 …22、 32 > 42 、52 、62 、72、 82、 102、 112 平板狀反光片 …33、 43、 63 、83 電路板 …24、 34、 44 、54 、64 、74、 84、 104、 114 導光板 …25、 35 - 45 、55 、65 、75、 85 ' 105、 115 凹陷處 ...221 、321 、42卜 521 、621 、721 、821 孔洞 ...222 '322 >422' 622、 722、 822、 1022 、1122 18 M365485 1041、 發光二極體 ...241、341、44卜 54卜 641、741、841 1141M365485 V. New description: [New technical field] The present invention relates to the structure of a lampshade, in particular to a lampshade 2 body 4 mounted on a backlight module with a light emitting diode (Light Emitting Diode) as a light source. 'The invention can effectively improve the uniformity of the light output of the backlight module, and the phenomenon of uneven brightness caused by the distance between the light source and the light source. °, [Prior Art] Liquid crystal display H products have the advantages of thin body, low consumption, low electromagnetic wave, etc., and have gradually replaced the traditional-like mapping tube display products, and become more and more popular: the mainstream 'liquid crystal display 7FH display mode' The liquid crystal layer controls the transmittance of the light of each primitive position, so that the liquid crystal display can correctly display the image. Since the liquid crystal is a kind of non-spontaneous fine 7F material, the corresponding light guiding device of the external light track is usually required, such as backlight. Modules, in general, consider the needs of users such as "light", "thin", "power saving", etc. Today, most of the back-to-back groups are mainly designed to make the light-off design, usually with a light tube or LED. As a way of New's Guan County, the light is sent to a light guide plate to enhance the control of the direction of light travel by using the design of the light guide plate. Please refer to FIG. 1 , which is a schematic diagram of a structure of a backlight module used in the prior art. The backlight module 10 includes a light source 12 , a lamp cover 14 , a reflector 15 and a light guide plate 16 . The light guide plate 16 includes a light incident surface. 161, a light emitting surface adjacent to the light incident surface 161, and a bottom surface M3 corresponding to the light emitting surface 162; the light source 12 is disposed at a position corresponding to the light incident surface 161 of the light guide plate 16, the light source 12 A plurality of light-emitting M365485 diodes arranged at equal intervals are accommodated in the lampshade _, and the light emitted by each of the light-emitting diodes (4) is obtained by the light entering the guide wire 6 after the light guide 6 Acting, and guiding the light transmission direction through the guiding action of the light guide plate ,6, and converting it into planar light, and emitting from the light emitting surface 162 of the light guide plate; the reflective sheet 15 is covered in the lampshade I4' (10) f light is fully reflected to the guide thin 6, the secret light emitting diode has (4) brightness compared with the traditional light tube, and the light emitted by the (four) has a narrow divergence angle 'in order to prevent the backlight module from being too bright, as usual Will reduce the number of light-emitting diodes in the lampshade 14, or increase the can light _ distance, however, this practice 'teaching light board 16 on the side of the light surface 161 is easy to appear optical dark area, the optical dark! 117 is mainly distributed between two adjacent material diodes, will be the backlight board, and 10 Brightness and uniformity of light output have a great impact. For this reason, although many manufacturers and researchers have invested in the design of the light guide plate, such as: the light-injecting surface of the light guide plate is designed to have a _ shape or a continuous wave recording groove to turn off the light of the material and increase the brightness. However, it is not possible to effectively solve the problem of optical dark areas produced between the light-emitting period and the light diode. Therefore, there is still a lot of room for improvement. Therefore, 'how to design and manufacture the _heterogeneous structure, can research and improve the optical dark area problem caused by the light source 12, and combine the guide wire 16 of the light-incident surface (6) to effectively reduce the brightness and darkness. The uniform optical dark area (10), like the brightness of the light guide plate 16 and the uniformity of the light output, is an important topic for this creation. M365485 [New Content] In view of the many defects in the structure of the lampshade, the creator has developed a backlight module with a light-emitting diode as a light source after years of practical experience and long-term research and experiment. Shade structure. One of the purposes of the present invention is to provide a lampshade that is used on a backlight module that uses a light-emitting diode as a light source, and includes a circuit board, a reflective sheet, and a metal cover. The metal body is bent and has at least two Φ sides and a bottom surface to form an accommodating space, and the accommodating space corresponds to one side of a light guide plate as a rim, and the longitudinal section of the S hai reflective sheet is Forming a continuous wave shape to form a plurality of depressions, and being accommodated in the accommodating space. Further, the circuit board is fixed on the metal cover body, and the circuit board is provided with a plurality of light-emitting diodes. Each of the light-emitting diodes can respectively correspond to each of the recesses of the light-reflecting sheet, so that the light emitted by each of the light-emitting diodes can be sufficiently reflected by the recesses of the light-reflecting sheet into the light guide plate. In this way, the light reflecting sheet can sufficiently reflect the light that is not directly incident on the light guide plate to the light guide plate to reduce the light loss, effectively reduce the optical dark area phenomenon of uneven brightness and darkness on the light guide plate, and greatly increase the light guide plate. Brightness and light uniformity. Another object of the present invention is to provide a lampshade for use in a backlight module using a light-emitting diode as a light source, including a circuit board, a reflective sheet, and a metal cover. The system is formed by bending a metal sheet body, and has at least two side surfaces and a bottom surface to form an accommodating space corresponding to one side edge of a light guide plate, and the longitudinal section of the light reflecting sheet is Continuously undulating to form a plurality of depressions, one side of the reflector is attached to the bottom surface of the accommodating space, 5 M365485, the circuit board is fixed on either side of the accommodating space, the circuit a plurality of light-emitting diodes are disposed on the board, and each of the light-emitting diodes can be disposed in each of the recesses of the light-reflecting sheet, so that the light emitted by each of the light-emitting diodes can be respectively used by the light-reflecting sheet The depression is sufficiently reflected to the guide scarf. The cover cover includes a flat reflector, the flat reflector is attached to the circuit board, and the position corresponding to each of the light-emitting diodes is set to be fine, so that each of the light-emitting diodes The body energy passes through the corresponding holes to extend into the recesses ′ so that the light emitted by each of the light-emitting diodes (4) can be sufficiently reflected by the recesses of the light-reflecting sheet into the reading light guide plate. Another object of the present invention is to provide a lampshade for use in a backlight module using a light-emitting diode as a light source, comprising a circuit board, a reflective sheet and a metal cover, wherein the metal cover system is A metal sheet is bent and has at least two sides and a bottom surface to form an accommodating space corresponding to one side edge of a light guide plate, and the circuit board is attached to the accommodating a bottom surface of the space, and the circuit board is provided with a plurality of light emitting diodes, wherein the longitudinal section of the light reflecting sheet has a continuous wave structure to form a plurality of recesses, and the reflective sheet is attached to the circuit board. And each of the recesses of the reflector has a hole corresponding to the position of each of the light-emitting diodes, so that the light-emitting diodes can extend into the recesses through the corresponding holes, so that the light-emitting diodes are The emitted light can be sufficiently reflected into the light guide plate by the recesses of the reflector. In this way, the heat generated by each of the light-emitting diodes can be quickly dissipated to the outside of the metal cover through the reflective sheet without being conducted to the circuit board, so that the service life of the circuit board can be effectively improved. Yet another object of the present invention is to provide a lampshade that is used on a backing wire set using a M365485 light-emitting diode as a light source, including a _circuit board, a reflective sheet, and a Meng hood, wherein the metal cover The system is formed by bending a metal sheet body having at least two side surfaces and a bottom surface to form an accommodating space corresponding to a side edge of a light guide plate, wherein the longitudinal section of the light reflecting sheet is a continuous wavy structure, forming a plurality of depressions, the reflector is attached to the bottom surface of the accommodating space, and the 'circuit board is fixed to the bottom surface of the outer side of the metal cover, and the metal cover is a hole is formed in each of the bottom surface and the reflector corresponding to each of the light-emitting diodes, so that each of the light-emitting diodes can pass through the corresponding hole and protrude into each recess, so that the light-emitting diodes are emitted. The emitted light can be sufficiently reflected by the depressions of the reflector to the "Hai' panel. In this way, the heat generated by each of the light-emitting diodes on the circuit board is quickly dissipated to the outer side of the metal cover through the reflective sheet without being conducted to the circuit board, so that the service life of the circuit board can be effectively improved. . Another object of the present invention is to provide a lampshade for use in a backlight module using a light-emitting diode as a light source, comprising a circuit board, a reflective sheet and a Lu metal cover, wherein the metal The cover system is formed by bending a metal sheet body, and has at least two side surfaces and a bottom surface to form an accommodating space corresponding to one side edge of a light guide plate, and the longitudinal section of the light reflecting sheet is The continuous wavy structure is formed into a plurality of depressions, and the reflective sheet is attached to the bottom surface of the accommodating space, and the circuit board is fixed on one side of the outer surface of the metal cover. The side of the cover body is respectively provided with a hole corresponding to each of the light-emitting diodes, so that the light-emitting diodes can pass through the corresponding holes into the recesses, so that the light emitted by the light-emitting diodes is emitted. The recesses of the retroreflective sheeting can be sufficiently reflected into the light guide plate 7 M365485. Thus, the slit generated by each of the light-emitting diodes on the circuit board can be quickly dissipated to the outer side of the metal cover through the reflective sheet, without being conducted to the circuit board, thereby effectively improving the service life of the circuit board. . The lampshade further includes a flat reflector, the flat reflector is attached to the side surface of the metal cover, and the position corresponding to each of the light-emitting diodes is provided on the side, so that Can each of the light-emitting diodes be? A corresponding hole is formed in each of the recesses, so that the light emitted by each of the light-emitting diodes is separately reflected in the light-reflecting shape and is reflected to the light guide plate. The lampshade is used on a backlight module with a light-emitting diode as a light source, and includes a circuit board, a reflective sheet and a metal cover. The metal cover system is formed by bending a metal sheet body, at least Two sides and a bottom surface to form an accommodating space corresponding to one side edge of a light guide plate, the circuit board is fixed on the bottom surface of the accommodating space, and the circuit board is provided with a plurality of Light-emitting diodes, which are single-piece stamped or integrally formed 'the cross section is recessed'. The lateral outer side of the retroreflective sheet is attached to the inner side surface of the metal cover and the reflective sheet is attached A hole is formed in the reflective sheet corresponding to each of the light-emitting diodes on the circuit board, so that the light-emitting diodes can extend through the corresponding holes into the recesses, so that the light-emitting diodes are emitted. Light energy It is sufficiently reflected in the light guide plate to the recess of the sheeting. Therefore, the heat generated by the respective light-emitting diodes can be quickly dissipated to the outside of the metal cover through the reflective sheet without being conducted to the circuit board, so that the service life of the circuit board can be effectively improved. M365485 Another object of the present invention is to provide a lampshade, which is used on a backlight module with a light-emitting diode as a light source, and includes a circuit board, a reflective sheet and a metal cover body, wherein the metal cover system The metal sheet body is bent and has at least two side surfaces and a bottom surface to form an accommodating space. The accommodating space corresponds to one side edge of the light guide plate, and the circuit board is fixed to the metal. a bottom surface of the outer side of the cover body, wherein the circuit board is provided with a plurality of light-emitting diodes, the light-reflecting sheet is stamped or integrally formed, and the cross section thereof is concave, and the lateral outer side of the reflective sheet is attached thereto. The gold Φ is an inner side surface of the cover body, and the reflective sheet is attached to the bottom surface of the accommodating space, and a hole is respectively formed at a bottom surface of the metal cover body and a position corresponding to the light-emitting diodes of the light-reflecting sheet. Therefore, each of the light-emitting diodes can extend into the recess through the corresponding hole, so that the light emitted by each of the light-emitting diodes can be sufficiently reflected into the light guide plate by the recess of the light-reflecting sheet. In this way, the heat generated by each of the light-emitting diodes can be quickly dissipated to the outer side of the metal cover via the reflective sheet, without being conducted to the circuit board, so that the service life of the circuit board can be effectively improved. • For the purpose of reviewing the purpose, shape, structure and function of the creation, we will further understand and understand the following diagrams, which are described in detail as follows: - [Embodiment] This creation is a kind of For the structure of the lampshade of the backlight module using the light-emitting diode as the light source, please refer to FIG. 2, in the first embodiment of the present invention, the lamp cover 20 includes a metal cover 2 and a reflective sheet 22 a circuit board 24, wherein the metal M365485 cover 21 is formed by bending a metal sheet body, and has at least two side surfaces and a bottom surface to form an accommodating space corresponding to the light guide plate 25 In the following preferred embodiment of the present invention, the light-incident surface of the light guide plate 25 is designed as a horizontal plane as an example, and the present invention is not limited to the actual application. Therefore, the light incident surface of the light guide plate 25 can also be designed to have a zigzag or wavy groove, so as to improve the ability and effect of the light guide plate 25 to collect light and increase the brightness through the serrated or wavy groove. , ·The circuit The 24 series is attached to the bottom surface of the accommodating space, and the circuit board 24 is provided with a plurality of light emitting diodes 241, and the reflecting sheet 22 is stamped or integrally formed. The longitudinal section of the reflecting sheet 22 is continuous. A wavy shape is formed to form a plurality of recesses 221, and the retroreflective sheeting 22 is attached to the circuit board 24. The recesses 221 of the retroreflective sheeting 22 respectively have a position corresponding to each of the light emitting diodes 241. The holes 222' enable the light-emitting diodes 241 to extend through the corresponding holes 222 into the recesses 221' so that the light emitted by the light-emitting diodes 241 can be recessed by the reflectors 22, respectively. The portion 221 is sufficiently reflected into the light guide plate 25. In this way, the light can be sufficiently reflected to the light guide plate 25, the light loss is reduced, the optical dark area phenomenon of uneven brightness and darkness is reduced, and the brightness and uniformity of the light guide plate 25 are increased. In the first preferred embodiment, the cross-section of the reflector 22 corresponding to each of the recesses 221 is concave, and the lateral outer side of the reflector 22 is attached to the inner side of the metal cover 21. The light emitted by each of the light-emitting diodes 241 can be sufficiently reflected by the light-reflecting sheet 22 to the light-guide plate 25 to reduce light loss and effectively improve the brightness and uniformity of the light-guide plate 25 . As shown in FIG. 3, in the second preferred embodiment of the present invention, the lamp cover M365485 30 includes a metal cover 31, a reflective sheet 32 and a circuit board 34, wherein the metal cover 31 is composed of a metal cover 31. The metal sheet body is bent and has at least two side surfaces and a bottom surface to form a valley space corresponding to one side edge of a light guide plate 35. The circuit board 34 is attached to the space. The bottom surface of the space is provided, and the circuit board 34 is provided with a plurality of light-emitting diodes 341 which are bent from a body into a continuous wave wave-like structure to form a plurality of recesses 321 . The light-reflecting sheet 32 is attached to the circuit board 34, and a hole 322 is defined in each of the recesses 321 of the light-reflecting sheet 32 corresponding to each of the light-emitting diodes 341, so that the light-emitting diodes 341 are respectively formed. Each of the corresponding holes 322 can be inserted into each of the recesses 321 so that the light emitted by the light-emitting diodes 341 can be sufficiently reflected by the recesses 32 of the retroreflective sheet 32 into the light guide plate 35, respectively. In this way, the heat generated by each of the light-emitting diodes 341 can be quickly dissipated to the outside of the metal cover 31 via the light-reflecting sheet 32 without being transmitted to the circuit board 34, so that the circuit board can be effectively improved. The service life of 34. In the second preferred embodiment, the lamp cover 30 further includes at least one flat reflective sheet 33. In the third embodiment, the flat reflective sheet 33 is taken as an example. The flat reflective sheet 33 is attached to the metal. Any side of the inner side of the cover 31 is configured to fully reflect the light emitted by each of the light-emitting diodes and the money reflected by the light-reflecting sheet 32 to the light guide plate '35' to reduce light loss. The brightness of the light guide plate 35 and the uniformity of the light output, the optical dark area phenomenon in which the light and darkness on the light guide plate 35 is uneven. Please refer to the fourth embodiment of the present invention. The lampshade includes a metal cover 4, a retroreflective sheeting 42 and a circuit board 44, wherein the metal cover 41 is made of a metal sheet. The bending sheet is formed by at least two sides and a bottom surface, and an accommodating space is formed by 11 M365485. The accommodating space corresponds to one side edge of a light guide plate 45. The reflector 42 is single-piece stamped or integrally formed. The longitudinal section of the retroreflective sheeting 42 has a continuous wave-like structure to form a plurality of recesses 421. The retroreflective sheeting 42 is attached to the bottom surface of the receiving space, and the circuit board 44 is fixed to the metal cover. a bottom surface of the outer surface of the metal cover 41, and a hole 422 is defined in the bottom surface of the metal cover 41 and the light-reflecting sheet 42 corresponding to each of the light-emitting diodes 441, so that the light-emitting diodes 441 can pass through each of the light-emitting diodes 441. The corresponding holes 422 extend into the recesses 421 such that the light emitted by the LEDs 441 can be sufficiently reflected by the recesses 421 of the reflector 42 into the light guide plate 45, respectively. In this way, the heat generated by each of the light-emitting diodes 441 on the circuit board 44 can be quickly dissipated to the outer side of the metal cover through the reflective sheet 42 without being transmitted to the circuit board 44, so that the circuit can be effectively improved. The use of the board privately. In the third preferred embodiment, the lamp cover 4 includes at least one flat reflective sheet 43. In the fourth embodiment, a flat reflective sheet 43 is exemplified, and the flat reflective sheet 43 is attached thereto. The metal cover 41 or the side surface of the reflector 42 or the cross section of the reflector 42 may be recessed, and the lateral outer side of the reflector 42 is attached to the metal cover 41. The inner side surface is configured to reflect the light emitted by the light-emitting body 441 and the light reflected by the light-reflecting sheet 42 to the light guide plate 45 to reduce the light loss, thereby effectively improving the brightness and light output of the light guide plate 45. Evenness. Please refer to the fifth preferred embodiment shown in FIG. 5, the lampshade includes a metal cover 51, and the reflector cover 51 is bent from a metal sheet 52 and a circuit board. 54' wherein the metal has at least two sides and a bottom surface, and is formed by 12 M365485 - a space for the space corresponding to one side edge of one of the light guide plates, and the reflector 52 is bent by the body A continuous wave shape is formed, and (10) is formed into a plurality of recesses 521, and a side surface of the light reflecting sheet 52 is attached to a bottom surface of the accommodating space, and the circuit board 54 is fixed on any side of the accommodating space. The circuit board 54 is provided with a plurality of (four) photodiodes 541 ′. The respective photoreactive diodes 541 can be separated from the recesses 521 of the retroreflective sheeting 52 so that the respective light emitting diodes 541 are emitted. The light rays are respectively reflected by the recesses 521 of the retroreflective sheeting 52 into the light guide plate 55. Thus, the light can be sufficiently reflected to the light guide plate 55, the light loss is reduced, the optical dark area phenomenon of the light and dark unevenness on the light guide plate 55 is reduced, and the brightness of the light guide plate and the uniformity of the itj light are increased. In addition, please refer to FIG. 6, which is a perspective view of a fourth preferred embodiment of the present invention. Referring to FIG. 7, in the fifth preferred embodiment of the present invention, the lamp cover 60 includes a metal cover 61, a reflective sheet 62 and a circuit board 64, wherein the metal 'cover 61 is composed of a The metal sheet body is bent and has at least two side surfaces and a bottom surface to form an accommodating space corresponding to one side edge of one light guide plate 65, and the shai reflector sheet 62 is formed by a single body. The test board 64 is fixed in the accommodating space. The circuit board 64 is fixed in the accommodating space. The circuit board 64 is fixed in the accommodating space. On either side, the circuit board 64 is provided with a plurality of light-emitting diodes 64 丨, and each of the light-emitting diodes 641 can respectively correspond to each recess 621 ′ of the light-reflecting sheet 62 to make each of the light-emitting diodes The light emitted by the body 641 can be sufficiently reflected into the light guide plate 65 by the recesses 621 of the reflector 62, respectively. In the fifth preferred embodiment, the lamp cover 60 further includes at least one flat reflective 13 M365485 piece 63. In the seventh embodiment, a flat anti-front piece 63 is taken as an example, and the flat reflective sheet 63 is attached. Attached to the circuit board 64, and corresponding to the positions of the light-emitting diodes 641, there is no hole 622' respectively, so that the light-emitting diodes 641 can pass through the corresponding holes 622 and extend into the recesses. At 621 ′, the light emitted by each of the light-emitting diodes 641 and the light reflected by the light-reflecting sheet 62 can be sufficiently reflected to the light guide plate 65′ to reduce the light loss, thereby effectively improving the brightness and light output of the light guide plate 65. Evenness. Referring to FIG. 8, in the sixth preferred embodiment of the present invention, the lamp cover 70 includes a metal cover 71, a reflective sheet 72 and a circuit board 74. The metal cover 71 is made of - metal. The sheet body is bent to have at least two side surfaces and a bottom surface to form an accommodating space corresponding to one side edge of a light guide plate 75. The reflector sheet 72 is bent by the sheet body. The continuous wavy structure is shouted to form a plurality of recesses 72. The reflector 72 is disposed on the bottom surface of the accommodating space, and the circuit board 74 is fixed on the outer side of the metal cover 71. A hole 722 is defined in each of the sides of the light-emitting diode 741, so that each of the light-emitting diodes 741 can extend into each of the recesses 721 through the corresponding holes 722, so that the light-emitting diodes The light emitted by the polar body 741 can be sufficiently reflected by the recesses 721 of the retroreflective sheeting 72 to the light guide plate 75. In this way, the heat generated by the “light-emitting body 741” on the board can be quickly dissipated to the outside of the metal cover 71 via the reflector 72 without being transmitted to the board, so that the heat can be effectively improved. The service life of the circuit board 74. Thus, the light can be sufficiently reflected to the optical dark area of the 0-tree unevenness on the low light guide plate 75 of the light guide plate, thereby effectively improving the brightness and uniformity of the light guide plate 75. 14 M365485 Please refer to FIG. 9 'In the seventh preferred embodiment of the present invention, the lamp cover 80 includes a metal cover 8 - a retroreflective sheet 82 and a circuit board 84, wherein the metal cover 81 is The metal sheet body is bent and has at least two side surfaces and a bottom surface to form an accommodating space. The accommodating space corresponds to one side edge of the light guide plate 85. The sheet is folded into a continuous wavy structure to form a plurality of recesses 821, and the retroreflective sheet 82 is attached to the bottom surface of the accommodating space, and the circuit board is fixedly fixed to one side of the metal shell 81. And the side φ surface of the metal cover body corresponds to each of the light-emitting two The holes 822 are respectively disposed at the positions of the body 841, so that the light-emitting diodes 841 can pass through the corresponding holes 822 and extend into the recesses 821, so that the light-emitting diodes 841 can be used by the light-emitting diodes 841. The heat generated by each of the light-emitting diodes 841 on the circuit board 84 can be quickly dissipated through the reflective sheet 82. The outer side of the cover 81 is still attached to the circuit board 84, so that the use of the circuit board 84 can be effectively improved. In the seventh preferred embodiment, the lamp cover still includes a flat reflector. 83' is a slab-shaped retroreflective sheeting 83 as an example of the slab-shaped retroreflective sheeting _ _ one of the side faces of the metal hood 81 and corresponding to each of the illuminating diodes A hole is formed in each of the positions of the 841 so that each of the 5 illuminating diodes 841 can pass through the corresponding holes and extend into the recesses 821. The j-phase emits the light emitted by the respective diodes 841 and the reflective sheet 82. The light can be sufficiently reflected to the light guide plate 85 to reduce the optical difference of the light and dark unevenness on the light guide plate 85. Dark area county, and reduce light loss, effectively improve the brightness and uniformity of the light guide. 15 M365485 Please refer to the figure ίο, in the eighth preferred embodiment of the present invention, the lamp cover 100 includes a circuit The plate 104, a retroreflective sheeting 102 and a metal cover 1〇1, wherein the metal cover 1G1 is bent from a gold; I# body, and has at least a facing surface and a bottom surface to form an accommodating space. The accommodating space is corresponding to one side edge of a light guide plate 1 〇 5 , the circuit board 104 is fixed on the bottom surface of the accommodating space, and the circuit board 104 is provided with a plurality of light emitting diodes 1 〇 41 The retroreflective sheeting 1〇2 is one-piece stamped or integrally formed, and has a concave cross section, and the lateral outer side of the reflecting sheet 1〇2 is attached to the inner side surface of the metal shell 101, and the reflecting sheet 1 is The 〇2 is attached to the circuit board 104, and a hole 1022' is formed in each of the reflectors 〇2 corresponding to each of the LEDs 〇41 so that the LEDs 1〇4i can Extending through the corresponding hole 1022 into the recessed portion, so that the light emitted by each of the light-emitting diodes 1〇41 can be respectively At the concave shape of the reflecting plate 102 to sufficiently reflected in the light guide plate 1〇5. In this way, the heat generated by each of the light-emitting diodes 1041 can be quickly dissipated to the outer side of the metal cover 101 via the reflective sheet 1〇2 without being conducted to the circuit board 1〇4, so that the heat can be effectively improved. The service life of the circuit board 104. Referring to FIG. 11 , in the ninth preferred embodiment of the present invention, the lamp cover 110 includes a circuit board 114 , a light reflecting sheet 112 and a metal cover 111 . The metal cover 111 is made of a metal. The sheet body is bent and has at least two side surfaces and a bottom surface to form an accommodating space corresponding to one side edge of a light guide plate U5. The circuit board 114 is fixed to the metal cover body. The bottom surface of the outer surface of the circuit board 114 is provided with a plurality of light-emitting diodes H41. The light-reflecting sheet 112 is stamped or integrally formed in a single piece, and has a concave cross section, and the horizontal direction of the light-reflecting sheet 112 is 16 M365485. Attached to the inner side surface of the metal cover ill, the retroreflective sheeting 112 is attached to the bottom surface of the valley space, and the bottom surface of the metal cover 1U and the reflective sheet 112 correspond to the respective S-light emitting diodes. A hole 1122 is defined in the position of the body 1141, so that the light-emitting diodes 1141 can extend into the recesses through the corresponding holes 1122, so that the light emitted by each of the light-emitting diodes 1141 can be respectively The concave portion of the reflector 112 is sufficiently reflected to the light guide plate 115 towels. In this way, the heat generated by each of the light-emitting diodes ιΐ4ι can be quickly dissipated to the outer side of the metal cover (1) by the light-reflecting sheet 112, and is conducted to the circuit board 114, so that the circuit can be effectively improved. The service life of the board 114. And the position of the gj of the circuit board may be the reflective sheet on the inner side of the accommodating space, between the reflective sheet and the metal cover, outside the metal cover, etc., = 疋 position It can be designed as a ship's bribe cover, and replaced with various fixed positions. As long as the light-emitting diodes can be divided into the recesses of the reflector, so that the light-emitting diodes are emitted. The light can be fully reflected by the _ 2 trap of the reflector to the guide towel, that is, the board of the present invention is attached to the above-mentioned position, and only the creation of the creation is better, but the creation The characteristics of f are not in this case. Anyone who is familiar with the art, in the field of creation I can change or modify 1 can be covered in the following patent scope of the case [simple description of the drawing] M365485 first picture The second figure of the conventional backlight module is the first part of the creation—%, Fig., Fig. 3 is the cross-section of the creation of the following: ::, and the schematic diagram of the cross section of the example The schematic diagram of the present invention is a stereoscopic representation of the fourth preferred embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS A cross-sectional view of a preferred embodiment of the present invention is a cross-sectional view of a sixth preferred embodiment of the present invention, and is a cross-sectional view of a seventh preferred embodiment of the present invention, f 10 A schematic cross-sectional view of an eighth preferred embodiment of the creation; and a schematic view of a ninth preferred embodiment of the present invention. [Description of main component symbols] Lampshade...20, 30, 40, 50 '60, 70, 80, 100, 110 Metal cover...21 > 31, 41, 51, 61, 7 Bu 8 Bu 101 ' 111 Reflective Sheets...22, 32 > 42 , 52 , 62 , 72 , 82 , 102 , 112 Flat reflectors 33 , 43 , 63 , 83 Circuit boards ... 24 , 34 , 44 , 54 , 64 , 74 , 84 , 104 , 114 light guide plate...25, 35 - 45, 55, 65, 75, 85 '105, 115 recessed...221,321,42b521,621,721,821 hole 222 '322 >422 ' 622, 722, 822, 1022, 1122 18 M365485 1041, light-emitting diodes...241, 341, 44, 54, 641, 741, 841 1141
1919