M341311 八、新型說明： 【新型所屬之技術領域】 本創作係為一種發光二極體燈泡，尤指一種利用 LED(Light Emitting Diodes)發光二極體藉由一電路板之電路 迴路來控制其輸入之電流強度，以達到調整該LED單元亮度 之發光二極體燈泡。 【先前技術】 市面上各式各樣的燈泡中，投射燈長久以來一直佔了相 當固定之比例。傳統的投射燈，係使用110伏特之鹵素投射 燈泡，不但耗電量高，且容易發熱，相對的壽命也非常短， 平均壽命只有幾個月，在這個電價高漲的年代，不僅非常不 環保’且其所散發之高熱亦容易造成電線走火等危險意外。M341311 VIII. New Description: [New Technology Field] This is a kind of light-emitting diode bulb, especially a light-emitting diode (LED) that controls its input through a circuit circuit of a circuit board. The current intensity is used to achieve a light-emitting diode bulb that adjusts the brightness of the LED unit. [Prior Art] Among the various types of bulbs on the market, the projection lamps have long occupied a relatively fixed ratio. The traditional projection lamp uses a 110 volt halogen projection bulb, which not only consumes high power, but also is prone to heat, and its relative life is very short. The average life expectancy is only a few months. In this era of high electricity prices, it is not very environmentally friendly. And the high heat it emits is also likely to cause dangerous accidents such as wire fire.
因此，曾有業者推出一種以LED為照明光源之投射燈， 利用LED之低耗電量等特性來改善傳統鹵素投射燈泡之缺 失。請參閱圖一所示，圖一為習用之LED投射燈泡之外觀示 意圖。其中，該習用之LED投射燈泡1係主要由外殼u、電 壓轉換單元12、以及LED單元13所組成。該LED單元13 及電壓轉換單元12係設於該金屬製成之外殼u内。藉由該 電壓轉換單元12將原本110伏特之交流電轉換成可提供LED 單元13使用之直流電，使LED單元13可以發光而達到投射 效果。Therefore, some manufacturers have introduced a projection lamp that uses LED as an illumination source, and utilizes the low power consumption of the LED to improve the loss of the conventional halogen projection bulb. Referring to Figure 1, Figure 1 shows the appearance of a conventional LED projection lamp. Among them, the conventional LED projection lamp 1 is mainly composed of a casing u, a voltage conversion unit 12, and an LED unit 13. The LED unit 13 and the voltage conversion unit 12 are disposed in the outer casing u made of the metal. By the voltage converting unit 12, the original 110 volt alternating current is converted into a direct current which can be used by the LED unit 13, so that the LED unit 13 can emit light to achieve a projection effect.
惟前述習用之LED投射燈泡1結構，雖然相較於傳統之 鹵素投射燈泡具有省電環保之功效，但是同樣的，使用LED M341311 旱元13也會有散熱的問題存在。尤其咖單元i3相較於傳 統齒素投射舰’其耐熱程度更低，且—但温度超過其容許 設定值時’該LED單元13難生的亮度就會發生衰減的現 象而無法達到預期的效果’甚至縮減其正常之使用壽命。 有鑑於此，針對LED單元13做動時所產生的熱能只 能依靠金屬製成的外殼11慢慢制空中，其散熱效果可說是 相當不盡理想。因此目前義之習用之咖浦燈泡卜最 多僅能使用1瓦的LED單元13，導致麵能祕的亮度受到 定之限度’而無法有效提昇並取代傳統之鹵素投射燈泡。 使得高耗電、高發熱的傳統鹵素投射燈泡一直仍佔有一定比 例的市場，造成相當多的能源浪費。 【新型内容】 本創作的主要目的係在於提供一種發光二極體燈泡，其 中，利用一電路板藉由控制電流之強度達到調整該led單元 亮度之目的。 本創作之另一目的係在於提供一種發光二極體燈泡，其 係藉由一環形護套將該散熱模組之散熱鰭片外圍予以框套， 並以該環形護套之側壁邊緣上所設至少一凸片彎折並鑲嵌於 兩散熱鰭片之中央間隔處，令該環形護套固定於該散熱模組 之上’且同時具有確保兩散熱鳍片所間隔之距離。 本創作之又一目的係在於提供一種發光二極體燈泡，其 中，於§亥環形護套之頂面上所設之一開口中央係與該透明蓋 體呈同一轴心，且該開口週緣處係覆蓋於透明蓋體之週緣 M341311 上’達到藉由該環形護套固定該透明蓋體於該散熱模組之上。 為達上述之目的，本創作在於提供一種發光二極體燈 泡，其係主要包括有··至少一 LED單元、一導熱柱、一散熱 模組、至少一基板、至少一透明蓋體、一環形護套、一電路 板、以及一底座所組合而成。該散熱模組係由複數個散熱鰭 爿所組合，且靠合於該導熱柱之外圍呈放射狀間隔環形串 接’並以該環形護套將該散熱鰭片之外圈框圍。 該環形護套係更包括：一頂面以及一側壁；該頂面係設 置於散熱模組之上並設置有複數個散熱孔，且中央設有一開 口與該透明蓋體相對應，令該侧壁將該散熱模組之外圍予以 極套並圈圍。於該環形護套之該侧壁邊緣上設有至少一凸 月’於該侧壁將散熱模組框套之後，係分別利甩該凸片弯折 並鑲嵌於兩散熱鰭片之中央間隔處，令該環形護套固定於該 散熱模組之上。 該LED單元係結合於該基板之上，並固接於該散熱鰭片 中央所形成之一凹階上。該底座外設有一導電螺紋與該電路 板做電性連接且符合一般常見之傳統鎢絲燈泡的金屬螺旋轉 接頭的規格。該LED單元所產生之熱量可透過該金屬基板傳 遞至該導熱柱，並藉由該導熱柱將熱量由其表面所接觸之複 數個金屬鰭片所構成之該散熱單元排出於外界者。 【實施方式】 為了能更清楚地描述本創作所提出之發光二極體燈泡， 以下將配合圖式詳細說明之。 7 M341311 請參閱圖二、圖三所示，圖二、圖三為本創作發光二極 邀燈泡第-較佳實施例之立體分_、立體組合圖。其中， 該發光一極體燈泡2係包括有··至少—LED單元2ι、一導熱 柱22、一散熱模組23、至少一基板24、至少一透明蓋體25、 -環形護套26、一電路板27、以及一底座烈所組合而成。 該導熱柱22係為一筒狀，且包括有··一頂端、以及一 底端222，並於該頂端221設有至少一貫穿孔2211。該導熱 衽22之材質可以是以導熱性較佳之鐵、銅、鋁、銀、以及金 等金屬或合金其令之一所製成者。 該散熱模組23係由複數個散熱鰭片231所組合，且靠合 於該導熱柱22之外園呈放射狀間隔環形串接，並於該散熱鰭 爿231靠合於該導熱柱22之該頂端221處往外擴張一預設距 離，令該散熱鰭片231於環繞該導熱柱22之一頂端221形成 與該導熱柱22同軸心之一凹階232。該散熱模組23之散熱鰭 片231可以是以導熱性較佳之鐵、銅、鋁、銀、以及金等金 屬或合金所製成者。該散熱鰭片231之表面可以喷裝、塗佈 一層散熱漆或是以電鍍一散熱層以提高該散熱鰭片231之散 熱效率。 該基板24係提供該LED單元21結合於其上，並設置於 該散熱鰭片231中央所形成之該凹階232上，且於該基板24 上可設置若干1C電容用以調節該LED單元21發光時所需之 電壓，同時利用該基板24將該LED單元21發光時所產生之 熱量藉由該散熱鰭片231排出外界者。於基板24上可使用絕 緣環氧樹脂（Epoxy)來避免1C電容與LED單元21發生短 路。於本實施例中，該基板24的材質可以是導熱性較佳之金 M341311 屬基板，例如：銘、銅等材質所構成。 該透明蓋體25係設置於該散熱模組23中央之該凹階232 内，且相對應於該LED單元21所投射之光源上，令該LED 單元21所投射之光源形成勻光狀態，且更具有防止炫光之效 果。該透明蓋體25周圍設有至少一卡固端251，係令該透明 蓋體25以彈性卡固於該散熱模組23中央之該凹階232内， ^ 且亦可利用黏接劑將該透明蓋體25黏附於該EJ階232中。該 • 透明蓋體25可以是凸透鏡、凹透鏡、平面鏡、以及擴散板其 # 中之一。 該環形護套26係可將該散熱模組23之外圍予以框套並 圈圍之。該環形護套26係更包括：一頂面261以及一侧壁 262 ;該頂面261係設置於該散熱模組23之上，且中央設有 一開口 263與該透明蓋體25呈同一軸心相對應。 該侧壁262係銜接並環繞於該頂面261周圍，且位於該 侧壁262之另一邊緣2621上設有至少一凸片264，於該環形 護套26將該散熱模組23加以框套後，分別利用該凸片264 • 彎折並鑲嵌於兩散熱鰭片231之中央間隔處，反與該頂面261 相對應，令該環形護套26固定於該散熱模組23之上，故此 可避免該環形護套26於該散熱模組23上滑動，同時更藉由 該凸片264將相鄰之兩散熱鰭片231保持一定之間距，以確 保散熱的效率。該環形護套26亦可以是塑膠射出成型之方式 框圍並附著於該散熱模組23之外侧，且分別深入相鄰之兩散 熱鰭片231之中央間隔處進行分隔固定，藉此達到保持該散 熱鰭片231之間距。 該電路板27至少包括一電路迴路，其係設置於該底座28 M341311 内，且透過該導熱柱22上之該貫穿孔2211與該基板24上所 結合之LED單元21做電性連接。該電路板27之電路迴路係 藉由控制其輸入電流之強度達到調整該LED單元21亮度之 目的。 該底座28係為一中空殼體，於上方設有一容置口 281可 容納該電路板27於其内，並與該導熱柱22之底端222所環 繞之該散熱鰭片231相互固定，並於該底座28外設有一導電 螺紋282與該電路板27做電性連接者。於本實施例中，該底 座28之該導電螺紋282係構成符合一般常見之傳統鎢絲燈泡 的金屬螺旋轉接頭的規格，其種類大致有：、E12、E14、 E26、E27、E40等不同之規格，於此處字母e後面的數字表 示的是該導電螺紋282的直徑(例如家用燈泡通常為E27規 格，也就是說燈泡的金屬螺旋轉接頭之螺紋處直徑為 27mm=2.7cm) 〇 請參閱圖四所示，圖四為本創作發光二極體燈泡之電路 板的電路示意圖。其宁，該發光二極體燈泡2之該電路板27 >係透過電纔線與一控制開關3〇相結合，藉以利用該控制開關 30提供該發光二極體燈泡2發光所需之電源進行切換。該控 開關30可以是一般裝置在牆壁之壁面上的電源切換開關， 藉由切換該控制開關30電源訊號時間之長短，將該電路板27 之電路迴路循環產生複數個不同亮度段數，並依照所切換之 段數改變該LED單元21不同之驅動電流強度，達到令該發 光二極體燈泡2切換數種不同亮度照明之目的。 舉例來說，該發光二極體燈泡2之該電路板27可設定該 控制開關30以每隔0.2秒進行電源訊號切換時，將該LED單 M341311 元21之驅動電流強度設定為四段數亮度之變化，分別依序產 生100%、75%、50%、以及25%四種亮度之循環段數，更可 設定該控制開關30以1.5秒〜2秒持續按壓所產生之電源訊 號以令該電路板27之電路迴路進行重置。 如圖四所示，於本較佳實施例中，該電路板27上所設置 之電路迴路係包括有··一電磁干擾（EMI)防止單元27卜一 穩壓單元272、一變壓單元273、一整流單元274、一濾波單 元275、一電流調整（Dimming)單元276、一電流/電壓偵測 單元277、一電源管理（PWM/QRM)單元278、一電阻279、 以及前述之LED單元21 〇 電磁干擾防止單元271係串接於牆面上之控制開關30與 110V或220V之交流電源270，可避免電磁千擾。穩壓單元 272係串接於電磁干擾防止單元271，可避免電壓或電流不穩 的現象損害到其他電路元件。變壓單元273係串接於穩壓單 元272’其係將ll〇v或220V之交流電源270降壓至驅動LED 單元21發光所需的電壓，例如5〜3〇伏特不等。整流單元274 係串接於變壓單元273，其係將經變壓單元273降壓後之電源 整流為正半波的電源波型，之後再配合串接於整流單元274 後之濾波單元275將其轉換為一連續性的直流電源。於本實 施例中，該整流單元274可以是橋式整流電路，且濾波單元 275可以包括一或多個濾波電容。LED單元21係串接於濾波 單元275，可接受經整流與濾波後之直流電源所驅動而發光。 該電流調整單元276係以並聯方式連接於整流單元274,其可 接夂來自整流單元274之一電壓訊號，並偵測控制開關3〇於 短時間内快速赠動作所造成之電壓峨的賴，而產生對 M341311 應之電流調整訊號。電流/電壓偵測單元277係連接於電流調 整單元276、且以並聯方式另連接於濾波單元275及LED單 元21，可偵測來自電流調整單元276之電流調整訊號、以及 偵測來自濾波單元275及LED單元21之電壓或電流訊號， 進而產生對應之控制訊號。該電源管理單元278係連接於電 流/電壓偵測單元277與變壓單元273之輸入端之間，可依據 * 由電流/電壓偵測單元277所傳來之控制訊號來調整變壓單元 * 273之輸入端的電流值大小，進而控制用來驅動LED單元21 • 發光之電流值大小，而達到控制與調整LED單元21發光亮 度的目的。 以下所述之本創作其他較佳實施例中，因大部份的元件 #相同或類似於前述實施例，故相同之元件與結構以下將不 再贅述，且相同之元件將直接給予相同之名稱及編號，並對 於類似之元件則給予相同名稱但在原編號後另增加一英文字 母以資區別且不予贅述，合先敘明。 請參閱圖五A、圖五B所示，圖五A、圖五B為本創作 鲁發光二極體燈泡第二較佳實施例之立體組合圖以及剖面示意 圖。請參閱圖五A所示，其中，本創作發光二極體燈泡第二 較佳實施例與前述之第一較佳實施例不同處在於，該發光二 極體燈泡2a之環形護套26a不僅可將各別之散熱韓片231加 以固定’更可藉由該開口 263a處之面積略小於該透明蓋體25 之表面積，將該開口 263a之該週緣處2631a覆蓋於該透明蓋 體25之週邊上，於該環形護套26a之該凸片264a分別彎折 鎮嵌於兩散熱鰭片231中央間隔處進行固定之同時，令該透 明蓋體25進一步受到該環形護套26a之壓制固定，達到令該 12 M341311 透明蓋體25不須用黏接劑予以接合，係直接以該環形護套26a 之該週緣處2631a壓合於該散熱模組23之該凹階232内（參 圖五B所示），且同時兼具保護該散熱鰭片231不受外力的衝 擊而變形以及可提供使用者有方便之施力處。 請參閱圖五B所示，該電路板27係設置於該底座28之 内’並利用至少一導線40由該導熱柱22内穿越其頂端221 之該貫穿孔2211與該基板24連接，藉此與該基板24上所設 置之該LED單元21做電性連接，並於各別之該散熱鰭片231 底端設有一^^階2311以提供該底座28之該容置口 281處相 結合。於該環形護套26a之該頂面261a上設置有環繞於該開 口 263a周園處之複數個散熱孔2611a (參圖五A所示），令該 散熱模組23之該散熱鰭片231得以藉由該散熱孔2611a將該 LED單元21所產生之熱能帶出。 請參閱圖六所示，圖六為本創作發光二極體燈泡第三較 佳實施例之立體組合圖。其中，本創作發光二極體燈泡第三 較佳實施例與前述之第二較佳實施例不同處在於，該發光二 極體燈泡2b之該底座28b係為符合一般市售符合mr16規格 之美術投射燈，其更包括：至少一導腳283b，且該導腳283b 係貫穿於該底座28b之内與該電路板27做電性連接，並透過 該電路板27係可將外界輸入之12伏特或是11〇〜220伏特之 交流電壓轉換成適合該LED單元21進行運作之直流電壓者。 請參閱圖七A所示，圖七a為本創作發光二極體燈泡之 LED單元排列示意圖。其中，複數個LED單元21分別相互 間隔一預設距離並以陣列方式排列結合於該基板24之上，其 排列之方式可以是：長形陣列排列、方形陣列排列、以及圓 13 M341311 形陣列排列其中之一。 請參閱圖七B所示，圖七b為本創作發光二極體燈泡之 基板俯視圖。其中，該LED單元21係位於該基板2如中央 位置處，該基板24a由週緣往中央該LED單元21方向設有 複數個開槽241a,以提供該電路板27利用該導線40由該導 熱柱22内穿越其頂端221之該貫穿孔2211並透過該開槽241a 處與該基板24a表面相連接，藉此與該基板24a上所設置之 該LED單元21做電性連接。 請參閱圖八所示，圖八為本創作發光二極體燈泡第四較 佳實施例之剖面示意圖。其中，本創作發光二極體燈泡第四 較佳實施例與前述之第三較佳實施例不同處在於，該發光二 極體燈泡2c之該環形護套26c於該開口 263c邊緣往該凹階 232c内延伸一·^扣端265c，並於該卡扣端265c上之預設位置 處設有一固定槽2651c以提供該透明蓋體25c之該卡固端 251c結合於其中。該卡扣端265c更以一凸塊2652c嵌附於各 別之該散熱鰭片231c位於該凹階232c内壁上所預設之一^^ 槽2312c内。於該環形護套26c之該侧壁262c下方之該邊緣 2621c處設有朝該散熱鰭片231c方向之一倒勾部2622c，並固 定於該散熱鰭片231c外圍之一勾槽2313c内。 也就是說，藉由該環形護套26c之該凸塊2652c以及該 倒勾部2622c分別卡固並結合於該卡槽2312c以及該勾槽 2313c之内，進而令該環形護套26c將該散熱模組23c之外圍 予以框圍卡固，且同時可將該透明蓋體25c之該卡固端251c 卡固於該環形護套26c之該固定槽2651c中，並伸入於該凹 階232c之内，一併與該散熱模組23c相結合。 M341311 於該導熱柱22c之該底端222c處係設置有一往外擴張之 一結合部223c，並於該結合部223c上之預設位置處設有複數 個結合孔2231c，且該結合部223c恰可分別嵌附結合於該散 熱鰭片231c底端之該卡階2311c内。該底座28c内則分別設 有與該結合部223c上之該結合孔2231c相對應之複數個固接 端284c，並利用該固接端284c結合於該結合孔2231c之内， 令該底座28c固接於該導熱柱22c之該底端222c上。該固接 端284c可以是一固定螺絲或"—禅兩者其中之一。 於本創作第四較佳實施例中，於該環形護套26c之該頂 面261c上同樣設置有與第三較佳實施例相仿之該散熱孔 2611c ’且環繞於該透明蓋體25c周圍。該底座28c外設有一 導電螺紋282c與該電路板27做電性連接者。該底座28c之 該導電螺紋282c係構成符合一般常見之傳統鎢絲燈泡的金屬 螺旋轉接頭的規格。 請參閱圖九所示，圖九為本創作發光二極體燈泡第五較 佳實施例之刮面示意圖。其中，本創作發光二極體燈泡第五 較佳實施例與前述之第四較佳實施例不同處在於，該發光二 極體燈泡2d之該散熱鰭片231d於該導熱柱22c之該頂端221c 周圍預設位置處分別往該LED單元21之投射方向設有凸出 一延伸部2314d，且適用組裝於市面上所通用規格之一燈座 50内’令該散熱鰭片231d之該延伸部2314d可凸出於該燈座 50之外，達到增加該散熱鰭片231d之散熱面積，以提高其散 熱效率之目的。 該環形護套26d亦隨著該散熱鰭片23Id之該延伸部 2314d外形予以包覆一延伸環266d，該延伸環266d係將該^ 15 M341311 形瘦套26d延伸成具有落差距離之一第一頂面以及一第 二頂面261d’ ’且該延伸環266d兩側邊係分別與該第一頂面 261d以及第一頂面261d’呈階梯狀相銜接，同時以該延伸環 266d將該延伸部2314d外形予以包覆，並於該延伸環266d 上設置有複數個排熱孔2661d以提供該散熱鰭片23Id之該延 伸部2314d透過該排熱孔2661d將熱量往外帶出於該燈座50 之外。 該環形濩套26d之該侧邊262d係與本創作第四較佳實施 例之該側邊262c之結構大致相同；同樣的，該第二頂面261d， 之該透明蓋體25d結構係與本創作第四較佳實施例之該頂面 261c的該透明蓋體25c結構大致相同（請參圖八所示），故於 此處不再詳加贅述。 該底座28d下方係為符合MR16規格之該導腳283d所構 成，且該導腳283d係由該底座28d外侧貫穿於該底座28d之 内，並與該電路板27做電性連接，以提供輸入外界之電源驅 動該LED單元21進行發光。該底座28d内則分別設有與該 結合部223c上之該結合孔2231c相對應之複數個固接端 284d ’並利用該固接端284d結合於該結合孔2231c之内，令 該底座28d固接於該導熱柱22c之該底端222c上。該固接端 284d可以是一固定螺絲或一^^榫兩者其中之一。 請參閲圖十所示，圖十為本創作發光二極體燈泡第六較 佳實施例之剖面示意圖。其中，本創作發光二極體燈泡第六 較佳實施例與前述之第四較佳實施例不同處在於，該發光二 極體燈泡2e之該透明蓋體25e係大致為一半橢圓弧形蓋體之 燈罩，其弧形之投射面經由擴散霧面處理之方式，已提供該 16 M341311 LED單元21透過該透明蓋體25e將所投射之光線進行均勻折 射以及具有柔和勻光之效果。於該透明蓋體25e下方平面處 係設置有該卡固端251e以結合於該環形護套26c之該固定槽 2651c内。該透明盘體25e可以是^一中空殼體或是一實心之透 光鏡體。 請參閱圖十一所示，圖十一為本創作發光二極體燈泡之 散熱模組實施例圖。其中，該散熱模組23f之該散熱鰭片231f 更可以是呈弧形彎折之片狀，且靠合於該導熱柱22之外圍呈 渦旋狀間隔環形串接，並透過該環形護套26將該散熱鰭片 231f外園框圍。由於弧形之該散熱鰭片231{進一步增加了該 散熱鰭片231f之散熱面積，同時以特殊之渦旋狀排列串接更 有利於將該LED單元21所產生之熱量散發，藉此提高該散 熱模組23f之散熱效率。且分別於該散熱鰭片231f外圍之末 端處設有一弧狀彎折2311f，進一步保障使用者於取用時不致 被該散熱鰭片231f之邊緣所刮傷。 综上所述，於本創作第一較佳實施例甲之發光二極體燈 泡2，其中，該LED單元21則結合於該基板24之上，並固 接於該散熱模組23中央所形成之該凹階232上，該散熱模組 23係由複數個散熱鰭片231所組合，且靠合於該導熱柱22 之外圍呈放射狀間隔環形串接。而該LED單元21所產生之 熱量係透過該基板24傳遞至該導熱柱22，並藉由該導熱柱 22將熱量由其表面所接觸之複數個散熱鰭片231所構成之該 散熱模組23排出於外界者。 該環形護套26係更包括：一頂面261以及一側壁262 ; 该頂面261係設置於該散熱模組23之上並設置有複數個散熱 17 M341311 iL 2611，且中央設有一開口 263與該透明蓋體25呈同軸心並 梱對應，令該側壁262將該散熱模組23之外圍予以框套並圈 圍。於該環形護套26之該側壁262邊緣上設有至少一凸片 264，於該側壁262將該散熱模組23框套後，係分別利用該 凸片264彎折並鑲嵌於兩散熱鰭片231之中央間隔處，令該 環形護套26固定於該散熱模組23之上。 該電路板27之電路迴路係藉由控制電流之強度達到調整 該LED單元21亮度增減之目的。該底座28外設有一導電螺 紋282與該電路板27做電性連接，且符合一般常見之傳統鎢 綵燈泡的金屬螺旋轉接頭的規格。該電路板27係透過電纜線 與一控制開關30相結合，且以該控制開關30切換電源訊號 之變換時間長短，令該電路板27之電路迴路循環產生複數個 不同亮度段數，並依照所切換之段數達到使該LED單元21 變更不同發光之驅動電流強度，以造成多重不同亮度段數之 切換。 於第二較佳實施例中，該環形護套26a可利用該開口 263a 之該週邊處2631a覆蓋於該透明蓋體25之週緣上，於該環形 護套26a之該凸片264a分別彎折鑲嵌於兩散熱鰭片231中央 間隔處時，使該透明蓋體25進一步受到該環形護套26a之壓 制固定於該凹階232之内，且於該環形護套26a之該頂面261a 上設置有環繞於該開口 263a周園處之複數個散熱孔2611a， 令該散熱鰭片231得以將該LED單元21所產生之熱能帶出。 於第三較佳實施例中，該底座28b係為符合一般市售符 合MR16規格之美術投射燈，其更包括：至少一導腳283b， 且該導腳283b係貫穿於該底座28b之内，並與該電路板27 M341311 做電性連接。 於第四較佳實施例中，該環形護套26c於該開口 263c邊 緣往該凹階232c内延伸一^^扣端265c，並於該卡扣端265c 上之預設位置處設有一固定槽2651c以提供該透明蓋體25c 之該卡固端251c結合於其中。該卡扣端265c更以一凸塊 2652c嵌附於各別之該散熱鰭片231c位於該凹階232c内壁上 所預設之一^^槽2312c内。於該環形護套26c之該侧壁262c 下方之該邊緣2621 c處設有朝該散熱鰭片231 c方向之一倒勾 部2622c，並固定於該散熱鰭片231c外圍之一勾槽2313c内。 於該導熱柱22c之該底端222c處係設置有一往外擴張之 一結合部223c，且該結合部223c恰可分別嵌附於該散熱鰭片 231c底端之該卡階2311c内。該底座28c内則分別設有與該 結合部223c上之複數個結合孔2231c相對應之複數個固接端 284c’利用該固接端284c將該底座28c結合於該結合孔2231c 之内。 於第五較佳實施例中，該散熱鰭片231d於該導熱柱22d 周圍預設位置處分別往該LED單元21之投射方向設有凸出 一延伸部2314d，且該環形護套26d亦隨著該散熱鰭片231d 之該延伸部2314d外形予以包覆一延伸環266d。該延伸環 266d係將該環形護套26d延伸成具有落差距離之一第一頂面 261d以及一第二頂面261d，且呈階梯狀相銜接，並於該延伸環 266d上設置有複數個排熱孔2661d以提供該散熱鰭片231d 之該延伸部2314d將該LED單元21所產生之熱量向外散出。 於第六實較佳施例中，該透明蓋體25e係大致為一半擴 圓弧形蓋體之燈罩，其弧形之投射面經由擴散霧面處理之方 M341311 式，已提供該LED單元21透過該透明蓋體25e將所投射之 光線進行勻光折射。該散熱模組23f之該散熱鰭片231f更可 以是呈弧形彎折之片狀，且靠合於該導熱柱22之外圍呈渦旋 狀間隔環形串接，並透過該環形護套26將該散熱鰭片231f 框圍。 唯以上所述之實施例不應用於限制本創作之可應用範 圍，本創作之保護範圍應以本創作之申請專利範圍内容所界 定技術精神及其均等變化所含括之範圍為主者。即大凡依本 創作申請專利範圍所做之均等變化及修飾，仍將不失本創作 之要義所在，亦不脫離本創作之精神和範圍，故都應視為本 創作的進一步實施狀況。 【圖式簡單說明】 圖一係為習用之LED投射燈泡之外觀示意圖。 圖二係為本創作發光二極體燈泡第一較佳實施例之立體 分解圖。 圖三係為本創作發光二極體燈泡第一較佳實施例之立體 組合圖。 圖四係為本創作發光二極體燈泡之電路板的電路示意圖 圖五A係為本創作發光二極體燈泡第二較佳實施例之立 體組合圖。 圖五B係為本創作發光二極體燈泡第二較佳實施例之剖 面示意圖。 圖六係為本創作發光二極體燈泡第三較佳實施例之立體 20 M341311 組合圖。 圖七A係為本創作發光二極體燈泡之LED單元排列示意 圖。 圖七B係為本創作發光二極體燈泡之基板俯視圖。 圖八係為本創作發光二極體燈泡第四較佳實施例之剖面 示意圖。 圖九係為本創作發光二極體燈泡第五較佳實施例之剖面 示意圖。 圖十係為本創作發光二極體燈泡第六較佳實施例之剖面 示意圖。 圖十一係為本創作發光二極體燈泡之散熱模組實施例圖。 【主要元件符號說明】 1〜習用之LED投射燈泡 U〜外殼 12〜電壓轉換單元 13〜LED單元 2、2a、2b、2c、2d、2e〜發光二極體燈泡 21〜LED單元 22、22c〜導熱柱 221、 221c〜頂端 2211、2211c〜貫穿孔 222、 222c〜底端 223c〜結合部 2231c〜結合孔 23、23c、23d、23f〜散熱模組 231、231c、231d、231f〜散熱鰭片 2311f〜弧狀彎折 21 M341311However, the conventional LED projection bulb 1 structure has the effect of saving electricity and environmental protection compared with the conventional halogen projection bulb, but similarly, the use of the LED M341311 AE 13 may also have heat dissipation problems. In particular, the coffee unit i3 has a lower heat resistance than the conventional guillotine projectile, and - when the temperature exceeds its allowable set value, the brightness of the LED unit 13 is attenuated and the desired effect cannot be achieved. 'Even even reduce its normal service life. In view of this, the heat energy generated when the LED unit 13 is actuated can only be slowly made into air by the outer casing 11 made of metal, and the heat dissipation effect can be said to be rather unsatisfactory. Therefore, the current use of the Kapu bulbs can only use up to 1 watt of the LED unit 13, which results in a limited brightness of the surface. It cannot effectively improve and replace the traditional halogen projection bulb. Conventional halogen projection lamps that make high power consumption and high heat generation still occupy a certain proportion of the market, causing considerable energy waste. [New content] The main purpose of this creation is to provide a light-emitting diode bulb in which a circuit board is used to adjust the brightness of the LED unit by controlling the intensity of the current. Another object of the present invention is to provide a light-emitting diode bulb which is framed by the outer periphery of the heat dissipation fin of the heat dissipation module by an annular sheath and is provided on the edge of the side wall of the annular sheath. At least one of the protrusions is bent and embedded in the central space of the two heat dissipation fins, so that the annular sheath is fixed on the heat dissipation module and at the same time has a distance to ensure the distance between the two heat dissipation fins. Another object of the present invention is to provide a light-emitting diode bulb, wherein an open center of the top surface of the annular sheath is coaxial with the transparent cover, and the periphery of the opening Covering the periphery of the transparent cover M341311, the transparent cover is fixed on the heat dissipation module by the annular sheath. In order to achieve the above object, the present invention provides a light-emitting diode bulb, which mainly includes at least one LED unit, a heat-conducting column, a heat-dissipating module, at least one substrate, at least one transparent cover, and a ring. A sheath, a circuit board, and a base are combined. The heat dissipating module is composed of a plurality of heat dissipating fins, and is radially spaced apart from the periphery of the heat conducting column to form a ring-shaped series θ and surrounds the outer fins of the heat dissipating fins with the annular sheath. The annular sheathing system further includes: a top surface and a side wall; the top surface is disposed on the heat dissipation module and is provided with a plurality of heat dissipation holes, and an opening is provided in the center corresponding to the transparent cover body, so that the top side The wall encloses and encloses the periphery of the heat dissipation module. Providing at least one convex moon on the edge of the side wall of the annular sheath, after the heat dissipation module is sleeved on the side wall, respectively, the protrusion is bent and embedded in the central interval between the two heat dissipation fins The annular sheath is fixed on the heat dissipation module. The LED unit is coupled to the substrate and fixed to a concave step formed in the center of the heat dissipation fin. The base peripheral has a conductive thread electrically connected to the circuit board and conforms to the specifications of a metal spiral adapter of a conventional conventional tungsten filament bulb. The heat generated by the LED unit can be transmitted to the heat conducting column through the metal substrate, and the heat dissipating unit is configured to discharge heat from the plurality of metal fins contacted by the surface to the outside. [Embodiment] In order to more clearly describe the light-emitting diode bulb proposed by the present invention, the following will be described in detail with reference to the drawings. 7 M341311 Please refer to Figure 2 and Figure 3. Figure 2 and Figure 3 show the three-dimensional and three-dimensional combination of the light-emitting diode invitation light bulb. The light-emitting diode 2 includes at least one LED unit 2, a heat-conducting column 22, a heat-dissipating module 23, at least one substrate 24, at least one transparent cover 25, an annular sheath 26, and a The circuit board 27 and a base are combined. The heat conducting column 22 is cylindrical and includes a top end and a bottom end 222, and the top end 221 is provided with at least a uniform through hole 2211. The material of the heat conductive crucible 22 may be one made of a metal or an alloy such as iron, copper, aluminum, silver, or gold which is preferably thermally conductive. The heat dissipation module 23 is composed of a plurality of heat dissipation fins 231 and is radially connected to the heat conduction column 22 in a ring-shaped series, and the heat dissipation fins 231 are coupled to the heat conduction column 22 . The top end 221 is extended outward by a predetermined distance, so that the heat dissipation fin 231 forms a concave step 232 concentric with the heat conducting column 22 at a top end 221 of the heat conducting column 22 . The heat dissipation fins 231 of the heat dissipation module 23 may be made of metal or alloys such as iron, copper, aluminum, silver, and gold which are preferably thermally conductive. The surface of the heat dissipating fin 231 may be sprayed, coated with a heat dissipating paint or plated with a heat dissipating layer to improve the heat dissipation efficiency of the heat dissipating fin 231. The substrate 24 is provided with the LED unit 21 coupled thereto, and is disposed on the concave step 232 formed in the center of the heat dissipation fin 231, and a plurality of 1C capacitors are disposed on the substrate 24 for adjusting the LED unit 21. The heat generated when the LED unit 21 is illuminated by the substrate 24 is discharged to the outside by the heat dissipation fins 231. An insulating epoxy (Epoxy) can be used on the substrate 24 to avoid short circuiting of the 1C capacitor and the LED unit 21. In the present embodiment, the material of the substrate 24 may be a substrate of gold M341311 which is preferably thermally conductive, for example, a material such as Ming or copper. The transparent cover 25 is disposed in the concave step 232 at the center of the heat dissipation module 23, and corresponding to the light source projected by the LED unit 21, so that the light source projected by the LED unit 21 forms a uniform light state, and It has the effect of preventing glare. The transparent cover 25 is provided with at least one fastening end 251 for elastically engaging the transparent cover 25 in the concave step 232 in the center of the heat dissipation module 23, and can also be The transparent cover 25 is adhered to the EJ step 232. The transparent cover 25 may be one of a convex lens, a concave lens, a plane mirror, and a diffusion plate. The annular sheath 26 can frame and enclose the periphery of the heat dissipation module 23. The annular sheath 26 further includes a top surface 261 and a side wall 262. The top surface 261 is disposed on the heat dissipation module 23, and an opening 263 is defined in the center and is opposite to the transparent cover 25. Corresponding. The side wall 262 is connected to and surrounds the top surface 261, and the other edge 2621 of the side wall 262 is provided with at least one tab 264, and the heat dissipation module 23 is framed by the annular sheath 26 Then, the tabs 264 are respectively bent and embedded in the central space of the two heat dissipating fins 231, and corresponding to the top surface 261, so that the annular sheath 26 is fixed on the heat dissipating module 23, so The annular sheath 26 can be prevented from sliding on the heat dissipation module 23, and the adjacent two heat dissipation fins 231 are kept at a certain distance by the protrusion 264 to ensure heat dissipation efficiency. The annular sheath 26 can also be framed by plastic injection molding and attached to the outer side of the heat dissipation module 23, and respectively separated and fixed at the central interval of the adjacent two heat dissipation fins 231, thereby maintaining the The distance between the heat dissipation fins 231. The circuit board 27 includes at least one circuit loop disposed in the base 28 M341311 and electrically connected to the LED unit 21 coupled to the substrate 24 through the through hole 2211 of the heat conducting post 22. The circuit circuit of the circuit board 27 achieves the purpose of adjusting the brightness of the LED unit 21 by controlling the intensity of its input current. The base 28 is a hollow housing, and a receiving port 281 is disposed thereon to receive the circuit board 27 and is fixed to the heat dissipating fin 231 surrounded by the bottom end 222 of the heat conducting post 22, And a conductive thread 282 is externally connected to the base 28 to electrically connect the circuit board 27. In this embodiment, the conductive thread 282 of the base 28 constitutes a metal spiral adapter conforming to a conventional conventional tungsten filament bulb, and the types thereof are roughly: E12, E14, E26, E27, E40, etc. The specification, the number after the letter e here indicates the diameter of the conductive thread 282 (for example, the household bulb is usually E27, that is, the diameter of the thread of the metal spiral adapter of the bulb is 27 mm = 2.7 cm) 〇 Please refer to FIG. 4, which is a circuit diagram of the circuit board of the light-emitting diode bulb. The circuit board 27 > of the light-emitting diode bulb 2 is combined with a control switch 3 through the electric wire, so that the control switch 30 is used to provide the power required for the light-emitting diode bulb 2 to emit light. Switch. The control switch 30 can be a power switch of a general device on the wall of the wall. By switching the length of the power signal of the control switch 30, the circuit loop of the circuit board 27 is cyclically generated to generate a plurality of different brightness segments, and according to The number of segments switched changes the driving current intensity of the LED unit 21 to achieve the purpose of switching the LEDs 2 to switch for different brightness illuminations. For example, the circuit board 27 of the LED bulb 2 can set the control switch 30 to set the driving current intensity of the LED single M341311 21 to four-segment brightness when the power signal is switched every 0.2 seconds. The change, respectively, sequentially generates 100%, 75%, 50%, and 25% of the brightness of the four segments, and the control switch 30 can be set to continuously press the generated power signal for 1.5 seconds to 2 seconds to make the The circuit loop of circuit board 27 is reset. As shown in FIG. 4, in the preferred embodiment, the circuit circuit disposed on the circuit board 27 includes an electromagnetic interference (EMI) preventing unit 27, a voltage stabilizing unit 272, and a voltage transforming unit 273. a rectifying unit 274, a filtering unit 275, a current adjusting (Dimming) unit 276, a current/voltage detecting unit 277, a power management (PWM/QRM) unit 278, a resistor 279, and the aforementioned LED unit 21 The electromagnetic interference prevention unit 271 is connected to the control switch 30 on the wall surface and the AC power supply 270 of 110V or 220V to avoid electromagnetic interference. The voltage stabilizing unit 272 is connected in series to the electromagnetic interference preventing unit 271 to prevent voltage or current instability from damaging other circuit components. The transformer unit 273 is connected in series to the voltage stabilizing unit 272' to step down the AC power supply 270 of ll 〇 v or 220 V to a voltage required to drive the LED unit 21 to emit light, for example, 5 to 3 volts. The rectifying unit 274 is connected in series to the transforming unit 273, which rectifies the power supply that has been stepped down by the transforming unit 273 into a positive half-wave power supply waveform, and then the filtering unit 275 that is connected in series with the rectifying unit 274 It is converted to a continuous DC power supply. In this embodiment, the rectifying unit 274 can be a bridge rectifying circuit, and the filtering unit 275 can include one or more filter capacitors. The LED unit 21 is connected in series to the filtering unit 275, and can be driven by the rectified and filtered DC power source to emit light. The current adjusting unit 276 is connected in parallel to the rectifying unit 274, and can be connected to a voltage signal from the rectifying unit 274, and detects the voltage 峨 caused by the fast-moving action of the control switch 3 in a short time. The current adjustment signal to the M341311 is generated. The current/voltage detecting unit 277 is connected to the current adjusting unit 276 and connected to the filtering unit 275 and the LED unit 21 in parallel, and can detect the current adjusting signal from the current adjusting unit 276 and the detecting from the filtering unit 275. And the voltage or current signal of the LED unit 21, thereby generating a corresponding control signal. The power management unit 278 is connected between the current/voltage detecting unit 277 and the input end of the transforming unit 273, and can adjust the transforming unit* 273 according to the control signal transmitted by the current/voltage detecting unit 277. The magnitude of the current at the input end controls the magnitude of the current used to drive the LED unit 21 to illuminate, and achieves the purpose of controlling and adjusting the luminance of the LED unit 21. In the other preferred embodiments of the present invention described below, since most of the components are the same or similar to the foregoing embodiments, the same components and structures will not be described below, and the same components will be directly given the same names. And number, and the same name is given for similar components, but an additional letter is added after the original number to distinguish and not repeat them. Referring to FIG. 5A and FIG. 5B, FIG. 5A and FIG. 5B are a perspective assembled view and a cross-sectional view of a second preferred embodiment of the Lu light emitting diode bulb. Referring to FIG. 5A, the second preferred embodiment of the present invention is different from the first preferred embodiment described above in that the annular sheath 26a of the LED bulb 2a is not only The respective heat-dissipating Korean sheets 231 are fixed. Further, the area of the opening 263a is slightly smaller than the surface area of the transparent cover 25, and the peripheral edge 2631a of the opening 263a covers the periphery of the transparent cover 25. The convex piece 264a of the annular sheath 26a is bent and fixed at the central interval of the two heat dissipating fins 231 for fixing, and the transparent cover body 25 is further pressed and fixed by the annular sheath 26a. The 12 M341311 transparent cover 25 is not required to be bonded by the adhesive, and is directly pressed into the concave step 232 of the heat dissipation module 23 by the edge 2631a of the annular sheath 26a (refer to FIG. 5B). And at the same time, the heat dissipating fin 231 is protected from the impact of the external force and deformed, and the user can provide a convenient application. Referring to FIG. 5B, the circuit board 27 is disposed in the base 28 and is connected to the substrate 24 by the through hole 2211 passing through the top end 221 of the heat conducting column 22 by using at least one wire 40. The LED unit 21 disposed on the substrate 24 is electrically connected to each other, and a bottom portion 2311 is disposed at a bottom end of each of the heat dissipation fins 231 to provide a combination of the receiving port 281 of the base 28. A plurality of heat dissipation holes 2611a (shown in FIG. 5A) surrounding the opening 263a are disposed on the top surface 261a of the annular sheath 26a, so that the heat dissipation fins 231 of the heat dissipation module 23 can be The heat energy generated by the LED unit 21 is carried out by the heat dissipation holes 2611a. Please refer to FIG. 6 , which is a three-dimensional combination diagram of the third preferred embodiment of the light-emitting diode bulb. The third preferred embodiment of the present invention is different from the foregoing second preferred embodiment in that the base 28b of the LED bulb 2b is in accordance with the general commercially available mr16 specification. The projection lamp further includes: at least one lead 283b, and the lead 283b is electrically connected to the circuit board 27 through the base 28b, and the external input is 12 volts through the circuit board 27 Or an AC voltage of 11 〇 to 220 volts is converted into a DC voltage suitable for operation of the LED unit 21. Please refer to FIG. 7A. FIG. 7A is a schematic diagram of the LED unit arrangement of the light-emitting diode bulb. The plurality of LED units 21 are respectively spaced apart from each other by a predetermined distance and are arranged in an array on the substrate 24. The arrangement may be: an elongated array arrangement, a square array arrangement, and a circle 13 M341311 array arrangement. one of them. Please refer to FIG. 7B. FIG. 7b is a top view of the substrate of the light-emitting diode bulb. The LED unit 21 is located at a central position of the substrate 2, and the substrate 24a is provided with a plurality of slots 241a from the periphery toward the center of the LED unit 21 to provide the circuit board 27 from the heat conducting column by using the wire 40. The through hole 2211 passing through the top end 221 of the hole 22 is connected to the surface of the substrate 24a through the slot 241a, thereby electrically connecting to the LED unit 21 disposed on the substrate 24a. Referring to FIG. 8, FIG. 8 is a cross-sectional view showing a fourth preferred embodiment of the light-emitting diode bulb. The fourth preferred embodiment of the present invention is different from the third preferred embodiment in that the annular sheath 26c of the LED bulb 2c is at the edge of the opening 263c. A fastening end 265c is extended in the 232c, and a fixing groove 2651c is disposed at a predetermined position on the locking end 265c to provide the locking end 251c of the transparent cover 25c. The latching end 265c is further embedded in a slot 2312c of the inner wall of the recessed step 232c by a bump 2652c. An edge portion 2622c facing the heat dissipation fin 231c is disposed at the edge 2621c below the side wall 262c of the annular sheath 26c, and is fixed in one of the hook grooves 2313c of the heat dissipation fin 231c. That is, the bump 2652c and the undercut portion 2622c of the annular sheath 26c are respectively fastened and coupled to the card slot 2312c and the hook groove 2313c, thereby causing the annular sheath 26c to dissipate the heat. The periphery of the module 23c is framed and clamped, and at the same time, the fastening end 251c of the transparent cover 25c is clamped in the fixing groove 2651c of the annular sheath 26c, and protrudes into the concave step 232c. The heat dissipation module 23c is combined with the heat dissipation module 23c. The M341311 is provided with a joint portion 223c extending outwardly from the bottom end 222c of the heat conducting column 22c, and a plurality of coupling holes 2231c are disposed at a predetermined position on the joint portion 223c, and the joint portion 223c is just The card steps 2311c are respectively embedded and coupled to the bottom end of the heat dissipation fin 231c. A plurality of fixing ends 284c corresponding to the coupling holes 2231c of the coupling portion 223c are respectively disposed in the base 28c, and the fixing ends 284c are coupled into the coupling holes 2231c to fix the base 28c. Connected to the bottom end 222c of the heat conducting column 22c. The fixed end 284c may be one of a set screw or a "-zen. In the fourth preferred embodiment of the present invention, the heat dissipation hole 2611c' is similarly disposed on the top surface 261c of the annular sheath 26c and surrounds the transparent cover 25c. The base 28c has a conductive thread 282c and an electrical connection with the circuit board 27. The conductive thread 282c of the base 28c is constructed to conform to the specifications of a metal spiral adapter of a conventional conventional tungsten filament bulb. Referring to FIG. 9, FIG. 9 is a schematic view showing the shaving surface of the fifth preferred embodiment of the light-emitting diode bulb. The fifth preferred embodiment of the present invention is different from the fourth preferred embodiment in that the heat dissipating fin 231d of the LED bulb 2d is at the top end 221c of the heat conducting column 22c. A protruding portion 2314d is disposed in a projection direction of the LED unit 21 at a predetermined position, and is assembled in a lamp holder 50 of a general specification on the market, and the extension portion 2314d of the heat dissipation fin 231d is disposed. It can protrude from the lamp holder 50 to increase the heat dissipation area of the heat dissipation fin 231d to improve the heat dissipation efficiency. The annular sheath 26d is also covered with an extension ring 266d along the outer shape of the extension portion 2314d of the heat dissipation fin 23Id. The extension ring 266d extends the ^15 M341311-shaped thin sleeve 26d to have a drop distance first. a top surface and a second top surface 261d′′ and the two sides of the extension ring 266d are respectively connected to the first top surface 261d and the first top surface 261d′ in a stepped manner, and the extension ring 266d extends the extension The portion of the portion 2314d is covered, and a plurality of heat-dissipating holes 2661d are disposed on the extending ring 266d to provide the extending portion 2314d of the heat-dissipating fin 23Id through the heat-dissipating hole 2661d to carry heat to the lamp holder 50. Outside. The side 262d of the annular ferrule 26d is substantially the same as the side 262c of the fourth preferred embodiment of the present invention; similarly, the second top surface 261d, the transparent cover 25d has a structure The transparent cover 25c of the top surface 261c of the fourth preferred embodiment is substantially identical in structure (see FIG. 8), and thus will not be described in detail herein. The bottom of the base 28d is formed by the guide leg 283d conforming to the MR16 standard, and the guide leg 283d is inserted into the base 28d from the outside of the base 28d, and is electrically connected to the circuit board 27 to provide input. The external power source drives the LED unit 21 to emit light. The base 28d is respectively provided with a plurality of fixing ends 284d' corresponding to the coupling holes 2231c of the joint portion 223c, and is coupled into the coupling holes 2231c by the fixing ends 284d, so that the base 28d is fixed. Connected to the bottom end 222c of the heat conducting column 22c. The fixing end 284d may be one of a fixing screw or a ^^. Referring to FIG. 10, FIG. 10 is a cross-sectional view showing a sixth preferred embodiment of the light-emitting diode bulb. The sixth preferred embodiment of the present invention is different from the fourth preferred embodiment described above in that the transparent cover 25e of the LED bulb 2e is substantially a semi-elliptical curved cover. The lampshade has a curved projection surface that is diffused by a matte surface treatment, and the 16 M341311 LED unit 21 is provided to uniformly refract the projected light through the transparent cover 25e and to have a softening effect. The fixing end 251e is disposed in a plane below the transparent cover 25e to be coupled into the fixing groove 2651c of the annular sheath 26c. The transparent disk 25e can be a hollow housing or a solid lens body. Please refer to FIG. 11 , which is a diagram of an embodiment of a heat dissipation module for a light-emitting diode bulb. The heat-dissipating fins 231f of the heat-dissipating module 23f may be in the shape of a curved bent sheet, and are arranged in a spiral-shaped annular ring shape around the periphery of the heat-conducting column 22, and pass through the annular sheath. 26 encircling the heat dissipation fins 231f. Since the heat dissipation fins 231 of the arc shape further increase the heat dissipation area of the heat dissipation fins 231f, the series arrangement in a special spiral shape is more advantageous for dissipating the heat generated by the LED unit 21, thereby improving the heat dissipation fin 231f. The heat dissipation efficiency of the heat dissipation module 23f. An arc-shaped bend 2311f is formed at the end of the outer periphery of the heat-dissipating fin 231f to further protect the user from being scratched by the edge of the heat-dissipating fin 231f. In summary, in the light-emitting diode bulb 2 of the first preferred embodiment of the present invention, the LED unit 21 is coupled to the substrate 24 and fixed to the center of the heat dissipation module 23. The heat dissipation module 23 is combined by a plurality of heat dissipation fins 231, and is radially connected to the periphery of the heat conduction column 22 in a ring-shaped series. The heat generated by the LED unit 21 is transmitted to the heat conducting column 22 through the substrate 24, and the heat dissipating fins 231 are formed by the heat conducting columns 22 to form the heat dissipating module 23. Exhausted from outsiders. The annular sheath 26 further includes a top surface 261 and a side wall 262. The top surface 261 is disposed on the heat dissipation module 23 and is provided with a plurality of heat dissipation portions 17 M341311 iL 2611, and an opening 263 is defined in the center. The transparent cover 25 is coaxially and coaxially corresponding to the side wall 262 to frame and enclose the periphery of the heat dissipation module 23. At least one protruding piece 264 is disposed on the edge of the side wall 262 of the annular sheath 26, and the heat dissipating module 23 is framed by the side wall 262, and is respectively bent by the protruding piece 264 and embedded in the two heat dissipating fins. The annular spacer 26 is fixed to the heat dissipation module 23 at a central interval of the 231. The circuit circuit of the circuit board 27 adjusts the brightness of the LED unit 21 by controlling the intensity of the current. The base 28 has a conductive screw 282 electrically connected to the circuit board 27, and conforms to the specifications of a metal spiral adapter of a conventional conventional tungsten light bulb. The circuit board 27 is coupled to a control switch 30 through a cable, and the switching time of the power signal is switched by the control switch 30, so that the circuit loop of the circuit board 27 generates a plurality of different brightness segments, and according to the The number of segments switched is such that the LED unit 21 changes the driving current intensity of different illuminations to cause switching of multiple different brightness segments. In the second preferred embodiment, the annular sheath 26a can be covered on the periphery of the transparent cover 25 by the periphery 2631a of the opening 263a, and the tabs 264a of the annular sheath 26a are respectively inlaid and inlaid. The transparent cover 25 is further fixed in the concave step 232 by the annular sheath 26a, and is disposed on the top surface 261a of the annular sheath 26a. A plurality of heat dissipation holes 2611a surrounding the opening 263a surround the opening 263a, so that the heat dissipation fins 231 can bring out the heat energy generated by the LED unit 21. In the third preferred embodiment, the base 28b is an art projection lamp that conforms to the commercially available MR16 specification, and further includes: at least one guide leg 283b, and the guide pin 283b extends through the base 28b. And electrically connected to the circuit board 27 M341311. In the fourth preferred embodiment, the annular sheath 26c extends from the edge of the opening 263c to the concave step 232c, and has a fixing groove at a predetermined position on the locking end 265c. 2651c is incorporated therein to provide the fastening end 251c of the transparent cover 25c. The latching end 265c is further embedded in a protrusion 2652c, and the heat dissipating fin 231c is disposed in one of the preset slots 2312c on the inner wall of the recess 232c. The edge 2621 c below the side wall 262c of the annular sheath 26c is provided with an undercut portion 2622c facing the heat dissipation fin 231c, and is fixed in a hook groove 2313c around the heat dissipation fin 231c. . A joint portion 223c which is outwardly expanded is disposed at the bottom end 222c of the heat conducting post 22c, and the joint portion 223c is respectively embedded in the step 2311c of the bottom end of the heat radiating fin 231c. A plurality of fixing ends 284c' corresponding to the plurality of coupling holes 2231c of the coupling portion 223c are respectively disposed in the base 28c. The base 28c is coupled to the coupling hole 2231c by the fixing end 284c. In the fifth preferred embodiment, the heat dissipating fins 231d are respectively provided with a protruding portion 2314d in a projection direction of the LED unit 21 at a predetermined position around the heat conducting column 22d, and the annular sheath 26d is also provided. The extension portion 2314d of the heat dissipation fin 231d is covered with an extension ring 266d. The extension ring 266d extends the annular sheath 26d to have a first top surface 261d and a second top surface 261d, and is connected in a stepped manner, and a plurality of rows are arranged on the extension ring 266d. The heat hole 2661d radiates the heat generated by the LED unit 21 to the extension portion 2314d of the heat dissipation fin 231d. In the sixth embodiment, the transparent cover 25e is a lamp cover of a substantially semi-circular arc-shaped cover body, and the arc-shaped projection surface is provided by a diffused matte treatment type M341311, and the LED unit 21 is provided. The projected light is uniformly refracted through the transparent cover 25e. The heat dissipating fins 231f of the heat dissipating module 23f may be in the form of an arc-shaped bent sheet, and are arranged in a spiral-shaped annular ring shape around the periphery of the heat-conducting column 22, and through the annular sheath 26 The heat dissipation fins 231f are framed. The above-mentioned embodiments are not intended to limit the scope of application of the present invention, and the scope of protection of the present invention should be based on the technical spirit defined by the content of the patent application scope of the present invention and the scope thereof. That is to say, the equal changes and modifications made by the applicants in accordance with the scope of this patent application will remain without losing the spirit and scope of this creation, and therefore should be regarded as the further implementation of this creation. [Simple description of the diagram] Figure 1 is a schematic diagram of the appearance of a conventional LED projection bulb. Figure 2 is a perspective exploded view of the first preferred embodiment of the light-emitting diode bulb of the present invention. Figure 3 is a perspective assembled view of a first preferred embodiment of the inventive light-emitting diode bulb. Fig. 4 is a schematic circuit diagram of a circuit board for creating a light-emitting diode bulb. Fig. 5A is a perspective view of a second preferred embodiment of the light-emitting diode bulb. Fig. 5B is a schematic cross-sectional view showing a second preferred embodiment of the light-emitting diode bulb of the present invention. Figure 6 is a combination view of the stereo 20 M341311 of the third preferred embodiment of the light-emitting diode bulb. Figure 7A is a schematic diagram of the LED unit arrangement of the light-emitting diode bulb. Figure 7B is a top view of the substrate of the light-emitting diode bulb. Figure 8 is a schematic cross-sectional view showing a fourth preferred embodiment of the inventive light-emitting diode bulb. Figure 9 is a schematic cross-sectional view showing a fifth preferred embodiment of the light-emitting diode bulb of the present invention. Figure 10 is a schematic cross-sectional view showing a sixth preferred embodiment of the inventive light-emitting diode bulb. Figure 11 is a diagram showing an embodiment of a heat dissipation module for a light-emitting diode bulb. [Description of main component symbols] 1 to conventional LED projection bulb U to housing 12 to voltage conversion unit 13 to LED unit 2, 2a, 2b, 2c, 2d, 2e to LED emitter 21 to LED unit 22, 22c~ Thermal conductive columns 221 and 221c to apex 2211 and 2211c to through holes 222 and 222c to bottom end 223c to joint portion 2231c to joint holes 23, 23c, 23d, and 23f to heat dissipation modules 231, 231c, 231d, and 231f to heat dissipation fins 2311f ~Arc bend 21 M341311
2311、2311c〜卡階 2312c〜卡糟 2313c〜勾槽 2314d〜％伸部 232、232c〜凹階 241a〜開槽 25、 25c、25d、25e〜透明蓋體 251、251e〜卡固端 26、 26a、26c、26d〜環形護套 261、261a、261c〜頂面 24、24a〜基极 261d〜第一頂面 2611、2611a、2611c〜散熱孔 262、262a、262c、262d〜侧面 261d’〜第二頂面 2621、2621c〜邊緣 2622c〜倒勾部 263、263a、263c〜開口 2631、263la〜週緣處 264、264a〜凸片 265c〜卡扣端 2651c〜固定槽 2652c〜凸塊 266d〜延伸環 266 Id〜排熱孔 27〜電路板 271〜電磁干擾防止單元 272〜穩壓單元 273〜變壓單元 274〜整流單元 275〜濾波單元 276〜電流調整單元 277〜電流/電壓偵測單元 278〜電源管理單元 279〜電阻 28、28b、28c、28d〜底座 281〜容置口 282、282c〜導電螺紋 284c、284d〜固接端 30〜控制開關 283b、283d〜導腳 22 M341311 40〜導線 50〜燈座2311, 2311c to card step 2312c to card 2313c to hook groove 2314d to % stretch portion 232, 232c to concave step 241a to slot 25, 25c, 25d, 25e to transparent cover 251, 251e to clamp end 26, 26a , 26c, 26d ~ annular sheath 261, 261a, 261c ~ top surface 24, 24a ~ base 261d ~ first top surface 2611, 2611a, 2611c ~ heat dissipation holes 262, 262a, 262c, 262d ~ side 261d' ~ second Top surface 2621, 2621c - edge 2622c - barb portion 263, 263a, 263c ~ opening 2631, 263la ~ circumference 264, 264a - tab 265c - snap end 2651c - fixing groove 2652c ~ bump 266d ~ extension ring 266 Id Heat drain hole 27 to circuit board 271 to electromagnetic interference prevention unit 272 to voltage stabilization unit 273 to voltage transformation unit 274 to rectifier unit 275 to filter unit 276 to current adjustment unit 277 to current/voltage detection unit 278 to power management unit 279~resistors 28, 28b, 28c, 28d~ base 281~ accommodating ports 282, 282c~ conductive threads 284c, 284d~ fixed end 30~ control switches 283b, 283d~ lead 22 M341311 40~ wire 50~ lamp holder