201241357 六、發明說明： 【發明所屬之技術領域】 本發明，是關於構成爲內藏有LED (發光二極體）元 件之LED燈泡的散熱構件。 【先前技術】 隨著LED的高性能化，以LED爲光源的電燈（LED燈 )被檢討做爲下一世代的照明裝置使用。LED燈，是有各 種的形態，但特別引人注目的是能夠替換成一般家庭所普 遍使用之白熾燈泡的燈泡型LED燈（以下稱LED燈泡）。 LED燈泡，其與先前的白熾燈泡相比，其消耗電力約 1/8，能夠發揮壽命約4〇倍的性能，因此可以說是非常符 合現今思想背景爲防止神球暖化之節能要求的物品。 另一方面，LED元件’一般是隨著溫度上昇光輸出就 會降低，此外，環境溫度高是比溫度低時光輸出的時效性 降低還大且壽命較短。因此，針對LED燈泡，是在其燈泡 體設置散熱構件’嘗試促進LED元件所產生之熱的散熱。 至今爲止所提案的技術，例如有專利文獻1〜5的構成。 專利文獻1 ’是構成爲具有喇叭狀金屬散熱部。專利 文獻2’是構成爲具有散熱翼片呈放射狀形成的散熱部。 專利文獻3、4,是構成爲具有重疊在軸方向之散熱翼片構 造的散熱部。專利文獻5’是揭示著設有要包覆基體外周 圍用之散熱部的構成。 〔先行技術文獻〕 5- 201241357 〔專利文獻〕 [專利文獻1]日本特開200卜243 8 09號公報 [專利文獻2]日本特開2005_93097號公報 [專利文獻3]日本特開2005_166578號公報 [專利文獻4]曰本特開2008_ 1 867 58號公報 [專利文獻5]日本特開2008-3 1 1 〇〇2號公報 1 容 內 明 發 〔發明欲解決之課題〕 然而’上述專利文獻1的喇叭狀金屬散熱部未必能獲 得充分的散熱效果。此外，專利文獻2〜5中記載的散熱部 ’是複數零件組合形成的複雜構造，或者，是使用鋁等鑄 物或模鑄品構成，因此生產性低、重量重、成本高。 最近，已成爲實用化的LED燈泡，是構成爲將形狀具 備有散熱翼的鋁鑄物使用在散熱部，但價格是設定在先前 白熾燈泡的數十倍程度，其低價格化就成爲課題。 本發明，是有鑑於上述問題點而爲的發明，目的.是提 供一種散熱性能優良、構造簡單、生產性優異、成本低的 LED燈泡用散熱構件，進而提供一種能夠實現高性能又便 宜之LED燈泡的LED燈泡用散熱構件。 〔用以解決課題之手段〕 本發明的LED燈泡用散熱構件，是構成爲內藏有LED 元件之LED燈泡的散熱構件，其特徵爲： 201241357 該散熱構件，是藉由將預塗膜鋁合金板壓 致圓錐形後形成， 上述預塗膜鋁合金板，是在由鋁合金板形 兩面或單面預塗裝有含散熱性物質之合成樹脂 的預塗膜鋁合金板（申請專利範圍第1項）。 〔發明效果〕 本發明的LED燈泡用散熱構件’如以上所 合金板爲素材的構成。鋁合金板，是與鑄物及 ，能夠利用連續生產線有效率地大量製造。 此外，於本發明中，是採用由鋁合金板形 兩面或單面預塗裝有含散熱性物質之合成樹脂 的上述預塗膜鋁合金板。 上述預塗膜鋁合金板，針對合成樹脂塗膜 能夠利用連續生產線有效率地大量實施。此外 合金板的壓製成型，是透過目前已確立之技術 能夠容易進行，以大量生產爲前提時’是能夠 地便宜加工。 另外，上述散熱構件，是藉由將上述預塗 壓製成型爲大致圓錐形後製成。上述預塗膜鋁 製成型是能夠容易進行，以大量生產爲前提時 常有效率地便宜加工。 此外，上述預塗膜鋁合金板，是在其表面 述散熱性物質的合成樹脂。因此’上述預塗膜 製成型爲大 成之基板的 塗膜後形成 述，是以鋁 模鑄品不同 成之基板的 塗膜後形成 的塗裝也是 ，預塗膜鋁 的組合，就 非常有效率 膜鋁合金板 合金板的壓 ，是能夠非 ，具有含上 銘合金板* 201241357 是比素材本身的狀態還具有已大幅提昇散熱性的表面。接 著’在表面具備有該合成樹脂塗膜的狀態下成型爲大致圓 錐形的散熱構件，其散熱特性就更加優異。 如上述，本發明的LED燈泡用散熱構件，是散熱性能 優良、構造簡單、生產性優異、成本低的LED燈泡用散熱 構件°因此，若使用本發明的散熱構件，是能夠實現高性 能又便宜的LED燈泡。 【實施方式】 〔發明之最佳實施形態〕 本說明書中的「鋁合金」，是只以鋁爲主體的金屬及 合金的總稱，是包括純鋁及鋁合金的槪念。 本明的LED燈泡用散熱構件，是呈大致圓錐形。該形 狀，例如是剖面爲大致圓形的筒狀，是構成爲其開口部即 兩末端之當中的一方比另一方還小徑的形狀。即，是在兩 末端分別具有大徑之開口部和小徑之開口部的筒狀體。於 該形態時，是在筒狀體的外圍側形成有錐形部（傾斜部） ，全體是如上述呈大致圓錐形。另，於此所謂之徑的大小 ，是兩末端的開口部相對性比較時的大小，只表示—方比 另一方大或小而已，並非表示絕對性的尺寸。不過’包括 著該散熱構件1和可放出燈泡頭部之光的玻璃或樹脂製的 半球狀罩蓋部（半球圓頂罩85 )及底部的燈口部86之燈泡 80的全體形狀，最好是形成爲既存燈泡規格之輪廓形狀範 圍內的尺寸（參照第8圖），於該範圍內’散熱構件是可 -8- 201241357 呈各式各樣的形狀。 於本發明中，上述LED燈泡用散熱構件，是藉由將預 塗膜鋁合金板壓製成型爲大致圓錐形後形成。 本申請之前所使用的LED燈泡用散熱構件，主要是以 鑄造（模鑄）製造，爲了具備創意性及輻射的散熱性，一 般是會進行後塗裝（後塗膜）及氧化鋁膜處理（登錄商標 )。具體而言，是有將捆好的零件浸泡在塗料中進行塗裝 的成批處理，或對一個一個零件進行塗料噴塗的噴塗處理 等。但是，上述的方法，是有塗料附著的效率低、成本高 的問題。 因此，如本申請的發明，是預測到板材的壓製成型品 今後將成爲實用化，但針對一般性的鋁材料，還是會擔心 壓製成型後的材料表面產生橘皮（orange peel)。上述橘 皮，例如在附著有塗膜的狀態下就表面性狀的而言成爲問 題的可能性還是高。特別是，對於具有如圓錐形般單純平 滑面之形狀的散熱構件，其表面性狀的問題更爲明顯。 因此，上述鋁合金板的平均結晶粒徑最好是ΙΟΟμπι以 下（申請專利範圍第2項）。 於該形態時，就能夠針對大致圓錐形般的單純形狀抑 制明顯化的橘皮（orange peel )。其結果，是能夠使熱輻 射的方向成爲散熱面的法線方向，能夠提昇對外部之熱輻 射效率的同時，能夠使散熱面所溫暖的空氣更順暢地往上 部流動，能夠提昇自然對流傳熱的效率。此外，於該形態 時，是能夠在合成樹脂塗膜形成時減輕底材的影響。 -9 - 201241357 平均結晶粒徑超過1〇〇μηι時，是會容易產生橘皮。 上述鋁合金板的平均結晶粒徑，是透過對鋁合金板之 製造條件中的均質化處理溫度、均質化處理的時間、熱間 壓延溫度、熱間壓延時的壓下率、冷間壓延時的壓下率、 中間退火溫度、中間退火的時間、最終退火的時間等進行 調整就能夠加以抑制。 上述LED燈泡用散熱構件的外圍側面，最好是爲平滑 。即，外圍側面最好是不具有凹凸。素材的粗糙度，最好 是平均粗糙度（R a)爲0.5 μπι以下，最大粗糙度（R max )爲5μπι以下》 於該形態時，上述LED燈泡用散熱構件的構造就變簡 單，能夠更加提昇其生產性》此外，又能夠削減金屬模具 所花費的成本，有利於經濟性。 另外，本發明中，上述預塗膜鋁合金板，是在由鋁合 金板形成之基板的兩面或單面預塗裝有含散熱性物質的合 成樹脂塗膜後形成。從要更加提昇散熱性的觀點來看，最 好是在基板的兩面預塗裝有合成樹脂塗膜。 上述預塗膜鋁合金板的上述合成樹脂塗膜，是可根據 所期望的厚度選擇一層塗裝、多層塗裝。此外，只要能夠 確保散熱性，也可根據需求重疊塗裝其他種類的合成樹脂 塗膜，也可使上述合成樹脂塗膜含有顏料等藉此就能夠具 備更多樣的創意性。在某種程度，要確保著表面積提昇熱 輻射效果，或想要具備有創意性的自由度時，也可對素材 施以噴砂處理等，藉此使素材的表面粗糙，或使塗膜含有 -10- 201241357 樹脂粒等藉此使塗膜本身的表面粗糙度變粗。 於本發明的LED燈泡用散熱構件中，上述合成樹脂塗 膜，其上述散熱性物質，最好是含有氧化鈦、碳、二氧化 矽、氧化鋁、氧化锆當中1種或2種以上（申請專利範圍第 3項）。如此一來，就能夠容易提高上述合成樹脂塗膜的 散熱性。 上述合成樹脂塗膜之散熱性的特性，是可透過紅外線 的積分輻射率進行評估。於本發明，最好是調整成紅外線 的積分輻射率爲7 〇 %以上。如此一來，就能夠獲得穩定的 散熱特性。 紅外線的積分輻射率，是藉由FT — IR對試體和理想黑 體進行比較就能夠測定出來。 此外，上述合成樹脂塗膜，是使用含有以數平均分子 量5〇00〜40000的合成樹脂爲主成份之基底樹脂的合成樹 脂系塗料，相對於上述基底樹脂100重量部，最好是含有 從50〜200重量部之平均粒徑0.1〜100 μπι的氧化鈦，和，1 〜25重量部之平均粒徑lnm〜500nm的碳，和，50〜200重 量部之二氧化矽，和，50〜200重量部之氧化鋁，及，50 〜200重量部之氧化鉻當中選出的1種或2種以上（申請專 利範圍第4項）。 即，上述合成樹脂塗膜，其基底樹脂，最好是使用含 有主成份爲數平均分子量5000〜40000的合成樹脂。當該 合成樹脂的數平均分子量未滿5000時，是會有塗膜變硬， 成型性變差的問題’另一方面，當合成樹脂的數平均分子 -11 - 201241357 量超過40000時，是會有塗膜太.軟導致耐傷性降低的問題 〇 另，上述數平均分子量爲5000〜40000的合成樹脂， 最好是應用聚酯。 此外，上述合成樹脂塗膜中含有氧化鈦時，最好是將 氧化鈦的平均粒徑爲0.1〜100μηι的範圍。當氧化鈦的平均 粒徑未滿〇. 1 μηι時，是會有紅外線積分輻射率降低的問題 ，另一方面，當氧化駄的平均粒徑超過ΙΟΟμηι時，是會有 氧化鈦從塗膜脫落數量增加的問題》 另外，上述合成樹脂塗膜中含有氧化鈦時的含有量， 相對於上述基底樹脂100重量部，最好是爲50〜200重量部 。當氧化鈦的含有量未滿50重量部時，是會有紅外線積分 輻射率降低的問題，另一方面，當氧化鈦的含有量超過 2〇〇重量部時，是會有氧化鈦從塗膜脫落數量增加的問題 〇 此外，上述合成樹脂塗膜中含有碳時，最好是使用碳 粒徑爲lnm〜500nm的微粉末。另外，上述合成樹脂塗膜 中含有碳時的含有量，最好是1〜25重量部。當碳的含有 量未滿1重量部時，是會有紅外線積分輻射率降低的問題 ，另一方面，當碳的含有量超過25重量部時，是會有碳從 塗膜脫落數量增加的問題。 又，上述合成樹脂塗膜中含有二氧化矽時的含有量， 最好是50〜200重量部。當二氧化矽的含有量未滿50重量 部時，是會有紅外線積分輻射率降低的問題，另一方面， -12- 201241357 當二氧化矽的含有量超過2 00重量部時，是會有二氧化矽 從塗膜脫落數量增加的問題。 另外，上述合成樹脂塗膜中含有氧化鋁時的含有量’ 最好是50〜200重量部。當氧化鋁的含有量未滿50重量部 時，是會有紅外線積分輻射率降低的問題，另一方面’當 氧化鋁的含有量超過2 00重量部時，是會有氧化鋁從塗膜 脫落數量增加的問題。 此外，上述合成樹脂塗膜中含有氧化鉻時的含有量， 最好是50〜200重量部。當氧化锆的含有量未滿50重量部 時，是會有紅外線積分輻射率降低的問題，另一方面，當 氧化锆的含有量超過200重量部時，是會有氧化锆從塗膜 脫落數量增加的問題。 另外，上述合成樹脂塗膜的膜厚，最好是0.5〜ΙΟΟμηι 。當膜厚未滿〇·5μιη時，是會有紅外線積分輻射率降低的 問題，另一方面，當膜厚超過100 μιη時是會有成本增多的 問題。 此外，上述合成樹脂塗膜，是至少含有平均粒徑0.3 〜ΙΟΟμιη的Ni (鎳）球狀塡充物，或，厚度爲0.2〜5μιη具 有2〜50μιη長徑之鱗片狀的Ni (鎳）塡充物，該等兩者的 合計含有量，相對於上述基底樹脂100重量部最好是爲1〜 1000重量部（申請專利範圍第5項）。 當上述Ni (鎳）球狀塡充物的平均粒徑未滿〇 3μπ1時 是會有熱傳導率降低的問題’另一方面，若超過…以以時 ’是會有Ni (鎳）球狀塡充物從塗膜脫落數量增加的問題 -13- 201241357 另外，當上述鱗片狀Ni (鎳）塡充物的厚度未滿 0·2μιη時是會有熱傳導率降低的問題，另一方面，若超過 5μηι時，就會有成本增多的問題。此外，當鱗片狀Ni (鎳 )塡充物的長徑未滿2μπι時是會有導電性降低的問題，另 —方面，若超過50μιη時，就會有鱗片狀Ni (鎳）塡充物從 塗膜脫落數量增加的問題。 接著，該等兩者Ni (鎳）塡充物Ni (鎳）球狀塡充物 和鱗片狀Ni (鎳）塡充物）的合計含有量（亦包括只含有 其中一方時），相對於上述基底樹脂1〇〇重量部最好是爲1 〜1000重量部。當該含有量未滿1重量部時熱傳導率會不 足，另一方面，當超過1〇〇〇重量部時是會有Ni (鎳）塡充 物從塗膜脫落數量增加的問題。 此外，上述合成樹脂塗膜，相對於上述基底樹脂100 重量部，最好是含有0.05〜3重量部之含水羊毛脂、巴西 棕櫚、聚乙烯當中1種或2種的內蠟（申請專利範圍第6項 )。如此一來，就能夠獲得耐傷性提昇之效果的同時，還 能夠提昇加工性。 上述內蠟的含有量，相對於基底樹脂100重量部爲未 滿〇.〇5重量部時是會有耐傷性降低的問題，另一方面，若 超過3重量部時是會有產生結塊的問題。 另外，上述合成樹脂塗膜，最好是形成在上述基板之 表面形成的塗敷型或反應型的鉻酸鹽或無鉻酸鹽層的上層 (申請專利範圍第7項）。於該形態時，是能夠提昇鋁合 -14- 201241357 金板和上述預塗裝層的緊密性，能夠提高加工性、耐久性 〔實施例〕 針對本發明之實施例相關的LED燈泡用散熱構件，是 使用第1圖至第8圖進行說明。 本例的LED燈泡用散熱構件1，如第8圖所示，是內藏 有LED元件8的LED燈泡80的散熱構件。 於本例，是製作複數種類的散熱構件1，對其特性進 行了評估。 做爲本發明之實施例的散熱構件1，如第2圖至第5圖 所示，是藉由將預塗膜鋁合金板2壓製成型爲大致圓錐形 後形成。散熱構件1的外圍側面1 〇是平滑，不具有成型所 造成的凹凸等。預塗膜鋁合金板2，如第1圖所示，是在由 鋁合金板形成之基板20的兩面預塗裝有含散熱性物質215 的合成樹脂塗膜21後形成。合成樹脂塗膜21，也可含有Ni (鎳）塡充物（未圖示）。於本例中，合成樹脂塗膜21， 是隔著形成在基板20之表面的化成覆膜22形成。 於本例中，是使用複數種類的預塗膜鋁合金板製作複 數的散熱構件（試體1〜30 )對其特性進行評估。 以下，是根據上述散熱構件1的製造步驟進行詳細說 明。 <預塗膜鋁合金板> -15- 201241357 如第1圖所示，是製作散熱構件1用的預塗膜鋁合金板 2。 做爲基板20，是準備了材質-質別爲5N0 1-0材，尺寸 爲1.5mm厚xlOOmm寬xlOOmm長的銘合金板。 其次，是以鹼性系脫脂劑將基板20的兩面脫脂後，將 基板20浸泡在磷酸鉻酸鹽浴，進行了化學法表面處理。所 獲得的化成覆膜（磷酸鉻酸鹽皮膜）22，是皮膜中的Cr( 鉻）含有量爲20±5mg/m2的範圍內。 其次，是在形成有化成覆膜22之基板20的兩面各面， 塗敷塗料形成有合成樹脂塗膜21。塗裝是使用棒材塗漆機 進行，合成樹脂塗膜21的厚度爲30μιη。此外，合成樹脂塗 膜21的烘烤硬化條件，是以要在240 °C的烤箱中保持60秒 使表面溫度可成爲230 °C爲條件。各試體之含有合成樹脂 塗膜21的成份是揭示在下述的表1及表2。 <銘合金板> 此外，於本例中，做爲比較用，是準備了表面沒有合 成樹脂覆膜的鋁合金板。 做爲該鋁合金板，是準備了材質-質別爲5N01-O材’ 尺寸爲1.5mm厚xlOOmm寬xlOOmm長的鋁合金板，採用其 兩面以鹼性系脫脂劑脫脂後之狀態的鋁合金板。 <壓製成型> 接著，如第2圖所示，是對預塗膜鋁合金板2以及鋁合 -16- 201241357 金20施以覆數次的壓成型。 首先，如第2(a) 、 （b)圖所示，是對平板狀的預 塗膜鋁合金板2以及鋁合金板20施以拉深加工，使該等成 型爲大致圓錐形之形狀的中間體1 5 1。此時，在中間體1 5 1 的小徑前端部是還有底構件1 5 8，在大徑後端部的周圍是 以餘量部份1 59殘留有成型部份的周圍。 其次，如第2(b) 、 （c)圖所示，是切除大致圓錐 形狀之中間體1 5 1的小徑前端部的底構件1 5 8，同時切除大 徑後端部之周圍的餘量部份1 59。 所獲得的散熱構件1，如第3圖所示，是呈在圓錐形狀 本體部份的前後具有直部1 8、1 9的形狀。如第3圖、第5圖 所示，大徑部份的外徑D1是約53mm ’小徑D2是約25mm ’ 全長L是約4 5mm。 <試體> 針對使用上述預塗膜鋁合金板2做爲素材加工成第3圖 至第5圖之狀態的本發明實施例準備了試體1〜試體3 0 ’針 對使用未施有合成樹脂塗膜之無塗裝的上述鋁合金板20做 爲素材加工成第3圖至第5圖之狀態的比較例準備了試體31 <評估> 評估，是如第8圖所示’是使用由各試體（試體1〜試 體31)做爲散熱構件製成的LED燈泡80進行。LED燈泡80 -17- 201241357 ，如該圖所示，是透過將鋁合金板壓製成型製成的蓋體3[ 第6(a)及（b)圖、第7圖]和散熱構件1進行組合，在蓋 體3的上面配置4個LED元件8 (只圖示2個）及其控制部， 在散熱構件1是插入配置有燈口部86，覆蓋著蓋體3覆蓋用 的半球圓頂罩85後製成。蓋體3如第6(a)及（b)圖、第 7圖所示，是圓盤狀，在半球圓頂罩覆蓋側的表面形成有 比周圍還凹下的凹部31，在散熱構件1側，是形成有比周 圍突出的凸部32。 LED元件8，是溫度85 °C發熱型的白色LED元件。 評估方法，是在上述LED燈泡80的LED元件8附近的蓋 體3表面固定溫度測定用的熱電偶管（未圖示），對通電 發光1 20分鐘後的溫度進行測定的方法。開始時的溫度爲 室溫（2 8 °C )。 1 2 0分鐘後的溫度爲5 5 °C以下時就評估爲◎，超過5 5 °C且65°C以下時就評估爲〇，超過65。(：時就評估爲X。 其結果是揭示在表1及表2。 -18- 201241357 [表i] ί ◎ ◎〇 ◎ ◎〇 ◎ ◎ ο ◎ ◎〇 ◎ ◎ 〇. ◎ ◎〇 1_ρ ιο 〇〇 tn m 守 <〇 α> ^ LO ^ CO S !? 2 o o o LO IO CO 1ft CS4 iO LO CO o ^ LO LO CO I 恶％ % 豳 件 敲' ' m Έ ^ ^ 辭 S' ς ^ 瑯~ ~ 侍 m 枓 豳*· ' (ωτ/) Sfi 翻耍 Ο Ο 〇 〇 c〇 Γ0 ο ο ο Γ0 CO C0 o o o O CO CO o o o CO CO CO ο ο ο CO CO CO 1 S m S 細| ο ο ο Ο Ο Ο * 蘊 镝 _ *w 釀 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 镝 dMI _ s»-〇 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 瘁 m 銳 艇 貍 m /—·* m _ «1γπ11 Pm t \ \ » \ 1 1 1 1 1 1 \ 1 » 1 S 1 § SS 祕 Sn _ ¢8 1 1 1 1 1 1 1 1 1 S I § 1 1 1 « 1 1 as 調 « 1 1 1 1 1 1 1 1 1 S § § 1 1 1 1 1 1 <-> _ _ 1 1 1 1 1 1 -s s 1 1 1 1 1 1 1 1 1 娜 德 n 脚 S 1 5 ο ο ο ο ο ο \ 1 1 » 1 1 1 1 I 1 1 1 s 蓉 » § ±Ζ 篯 «Ί ft泣 X—<» \ 1 1 1 1 \ 1 \ 1 1 1 1 1 1 1 \ 1 1 11¾¾ Νμ·» 1 1 1 1 1 画 1 1 1 1 1 1 1 1 1 1 1 1 龄 直徑 (//m) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 |8 趣 Ρ1 ^>· 5 § ρ ° τ— ^ 5§1 1 1 1 1 1 1 1 1 1 醒 ▼- CM C0 ^ in co 卜 CO ΟΪ O <NI CO 寸 IO <〇 卜》 -19- 201241357 [表2] 1 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ X 12盼鐘 後的溫 度(0C) CM O CO m in CO 00 ^ ιο ^ ιη co o 兮 ιο m in CM 〇 ^ in in io ο 1 本發明例 " 1 " 本發明例 // // 本發明例 // // 本發明例 " // 比較例 讓 厚度 ("m) ο ο ο CO co co ο ο ο CO CO co ο ο ο CO CO co ο ο ο CO CO co 1 1 m & Μ Ο Ο Ο ο ο ο ^ »» τ* ο Ni(鎳)塡充物 鱗片狀 •0—S 插 Μ 潤 1 1 1 1 1 I o o o ▼— ▼-· 1 1000 0.5 1 i S3 細 ο ο ο V» -is 1 1 1 1 1 I 1 散熱性物質 氧化銷 筢 賴 1 I ι 1 1 ο 1 1 1 1 1 1 1 氧化鋁 ss β 觸 1 1 I 1 Ο I 1 1 1 ί 1 1 1 二氧化矽 锚 _ 蝴 1 1 I Ο 1 ι 1 1 1 1 I ι 1 踏 插 itmli ΡΠ ίο ιη ιο 1 1 I 1 1 1 1 \ I 1 氧化鈦 m 劇 3 ¢01) ο ο ο ο ο ο ο ο ο ο ο ο *— ^ o o o o o o »-· T·* ο ο ο ο ο ο V·" 1 S Ni(鎮)塡充物 鱗片狀 厚度 ("m) 1 \ 1 1 1 1 CM CM CM τ-· V— 1 長徑 (/im) 1 \ 1 \ 1 I 2 « 5 CS| CSJ CSJ 1 1 直徑 (i<m) sis ο ο ο ίο m m 1 1 1 1 1 1 1 散熱性 物質 氧化鈦 粒徑 (A/m) 1_ »— ^― »— τ— 1 蹈 〇>〇·»— CNJ CNJ CM CO ^ CM CM CM in co 卜 CM CM Csl go σ> ο CM CVJ C0 -20- 201241357 從表1及表2得知，本發明實施例的試體1〜30的LED 燈泡用散熱構件，相較於比較例的試體3 1，其散熱性能是 較優異。 此外’試體1〜30的LED燈泡用散熱構件，是具有大 致圓錐形狀的簡單構造，利用壓製成型就能夠生產性良好 製造，能夠以低成本製造。 因此，根據本例時，是可提供一種散熱性能優良、構 造簡單、生產性優異、成本低的LED燈泡用散熱構件，能 夠實現高性能且便宜的LED燈泡。 (實施例2 ) 本例，是使用已經控制平均結晶粒徑的鋁合金板製造 LED燈泡用散熱構件的例子。 首先，做爲基材，是製作了材質-質別爲A1050-0材， 尺寸爲0.8mm厚xlOOmm寬xlOOmm長的銘合金板。於本例 中’是對鋁合金板製造時的製造方法進行調整，藉此製作 出平均結晶粒徑爲37μηι、86μιη、125μπι ' 3 50μηι之4種類 的銘合金板。 銘合金板的平均結晶粒徑’是如下述進行了測定。 即，首先，是對壓延面進行電解硏磨，針對該壓延面 將通過偏光濾鏡的光學顯微鏡組織以倍率50〜1 00倍進行 了攝影。接著，是利用每1視野3條線遮斷法，對平均結晶 粒徑進行了測定。 其次，是使用各鋁合金板，與實施例1相同形成有化; -21 - 201241357 成覆膜’以和實施例1之試體1相同的條件形成爲預塗膜鋁 合金板。再加上’與實施例1相同進行壓製成型，製作出 銘合金板之平均結晶粒徑爲不同的4種類大致圓錐形狀的 散熱構件（試體32〜試體35 )。各試體的平均結晶粒徑揭 示在表3。 接著’是針對試體32〜試體35，以目視觀察其表面表 皮和大致圓錐形散熱構件之上下端部之彎折部份的表皮， 進行了官能評估。沒有橘皮且平滑時是評估爲「〇」，明 顯呈現橘皮時是評估爲「X」。其結果揭示在表3» [表3] (表3)201241357 SUMMARY OF THE INVENTION [Technical Field] The present invention relates to a heat dissipating member configured as an LED bulb in which an LED (Light Emitting Diode) element is incorporated. [Prior Art] With the improvement of the performance of LEDs, electric lamps (LED lamps) using LEDs as light sources have been reviewed and used as lighting devices for the next generation. LED lamps are available in various forms, but they are particularly attractive for replacement with bulb-type LED lamps (hereinafter referred to as LED bulbs) of incandescent bulbs that are commonly used in homes. Compared with the previous incandescent bulbs, the LED bulb consumes about 1/8 of its power and can perform about 4 times of its life. Therefore, it can be said that it is in line with the energy saving requirements of the current thinking background to prevent the warming of the god ball. . On the other hand, the LED element ' generally has a lower light output as the temperature rises. Further, when the ambient temperature is high, the time efficiency of the light output is lowered and the life is short. Therefore, for an LED bulb, a heat dissipating member is disposed in the bulb body to attempt to promote heat dissipation by the heat generated by the LED element. The techniques proposed so far include, for example, the configurations of Patent Documents 1 to 5. Patent Document 1' is configured to have a flared metal heat radiating portion. Patent Document 2' is configured to have a heat radiating portion in which heat radiating fins are radially formed. Patent Documents 3 and 4 are heat radiating portions configured to have a heat dissipating fin structure superposed in the axial direction. Patent Document 5' discloses a configuration in which a heat radiating portion for covering the outer periphery of the substrate is provided. 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 [Patent Document 5] Japanese Patent Laid-Open Publication No. 2008- 1 867-58 [Patent Document 5] Japanese Patent Laid-Open Publication No. 2008-3 1 1 〇〇 2 (1) 容内明发 [Problems to be solved by the invention] However, the above Patent Document 1 The flared metal heat sink may not be able to achieve sufficient heat dissipation. Further, the heat dissipating portion ′ described in Patent Documents 2 to 5 is a complicated structure in which a plurality of components are combined, or a cast or a molded product such as aluminum is used, so that productivity is low, weight is heavy, and cost is high. Recently, an aluminum lamp which has been put into practical use is configured to use an aluminum casting having a heat dissipating fin in a heat dissipating portion. However, the price is set to be several tens of times that of an incandescent bulb, and the price thereof has become a problem. The present invention has been made in view of the above problems, and an object of the invention is to provide a heat dissipating member for an LED bulb which is excellent in heat dissipation performance, simple in structure, excellent in productivity, and low in cost, and further provides an LED which can realize high performance and low cost. The LED bulb of the bulb uses a heat dissipating member. [Means for Solving the Problem] The heat dissipating member for an LED bulb of the present invention is a heat dissipating member configured as an LED bulb in which an LED element is incorporated, and is characterized in that: 201241357 the heat dissipating member is formed by precoating an aluminum alloy After the plate is pressed into a conical shape, the precoated aluminum alloy plate is a precoated aluminum alloy plate which is precoated with a synthetic resin containing a heat dissipating material on both sides or one side of the aluminum alloy plate (patent application scope) 1 item). [Effect of the Invention] The heat dissipating member for an LED light bulb of the present invention has the above-described alloy sheet as a material. Aluminum alloy sheets, which are cast and can be efficiently manufactured in large quantities using continuous production lines. Further, in the present invention, the above-mentioned precoated aluminum alloy sheet in which a synthetic resin containing a heat-dissipating substance is precoated with both sides of an aluminum alloy plate or a single side is used. The above-mentioned precoated aluminum alloy sheet can be efficiently produced in a large amount by means of a continuous production line for a synthetic resin coating film. In addition, the press forming of the alloy sheet can be easily carried out by the currently established technology, and it can be inexpensively processed on the premise of mass production. Further, the heat dissipating member is formed by press-molding the pre-coating into a substantially conical shape. The above-mentioned precoated aluminum film can be easily produced, and it is often efficiently and inexpensively processed on the premise of mass production. Further, the precoated aluminum alloy sheet is a synthetic resin having a heat dissipating material on its surface. Therefore, the above-mentioned pre-coating film is formed by coating the film of the substrate, and the coating is formed by coating the substrate of the aluminum die-casting material. The combination of the pre-coated aluminum is very The pressure of the aluminum alloy sheet alloy plate of the efficiency film is non-functional, and it has the surface of the alloy plate*201241357 which has a greatly improved heat dissipation property compared with the state of the material itself. Then, a heat dissipating member which is formed into a substantially conical shape in a state in which the synthetic resin coating film is provided on the surface is further excellent in heat dissipation characteristics. As described above, the heat dissipating member for an LED bulb of the present invention is a heat dissipating member for an LED bulb which is excellent in heat dissipation performance, simple in structure, excellent in productivity, and low in cost. Therefore, if the heat dissipating member of the present invention is used, high performance and low cost can be achieved. LED light bulb. [Embodiment] [Best Embodiment of the Invention] The "aluminum alloy" in the present specification is a general term for metals and alloys mainly composed of aluminum, and is a concept including pure aluminum and aluminum alloy. The heat dissipating member for an LED bulb of the present invention has a substantially conical shape. The shape is, for example, a cylindrical shape having a substantially circular cross section, and is formed into a shape in which one of the two end portions of the opening portion is smaller than the other. In other words, it is a cylindrical body having an opening portion having a large diameter and an opening portion having a small diameter at both ends. In this form, a tapered portion (inclined portion) is formed on the outer peripheral side of the cylindrical body, and the entire portion has a substantially conical shape as described above. Further, the size of the diameter here is the size when the relatives of the openings at the two ends are compared, and only the size is larger or smaller than the other, and does not indicate the absolute size. However, it is preferable to include the entire shape of the heat dissipating member 1 and the glass or resin hemispherical cover portion (hemispherical dome cover 85) and the bottom lamp portion 86 of the light bulb portion 86. It is formed into a size within the outline shape range of the existing bulb specification (refer to Fig. 8), in which the 'heat dissipating member is -8-201241357 in various shapes. In the present invention, the heat dissipating member for an LED bulb is formed by press-molding a precoated aluminum alloy sheet into a substantially conical shape. The heat dissipating member for the LED bulb used in the present application is mainly produced by casting (die casting), and in order to have creative and radiative heat dissipation properties, post-coating (post-coating film) and aluminum oxide film processing are generally performed ( Login trademark). Specifically, there are a batch process in which a bundled part is immersed in a paint for coating, or a spray process in which a part is subjected to paint spraying. However, the above method has a problem that the adhesion of the paint is low and the cost is high. Therefore, as for the invention of the present application, it is predicted that the press-formed product of the sheet material will be put into practical use in the future, but for the general aluminum material, there is a concern that orange peel is generated on the surface of the material after press forming. The above-mentioned orange peel is highly likely to be a problem in terms of surface properties in a state in which a coating film is adhered thereto. In particular, for a heat dissipating member having a shape of a simple smooth surface such as a conical shape, the problem of surface properties is more conspicuous. Therefore, the average crystal grain size of the above aluminum alloy sheet is preferably ΙΟΟμπι or less (the second item of the patent application). In this form, it is possible to suppress the apparent orange peel for a substantially conical simple shape. As a result, the direction of the heat radiation can be made the normal direction of the heat radiating surface, and the heat radiation efficiency to the outside can be improved, and the warm air of the heat radiating surface can flow more smoothly to the upper portion, thereby enhancing the natural convection heat transfer. s efficiency. Further, in this form, it is possible to reduce the influence of the substrate at the time of formation of the synthetic resin coating film. -9 - 201241357 When the average crystal grain size exceeds 1〇〇μηι, it is easy to produce orange peel. The average crystal grain size of the aluminum alloy sheet is a homogenization treatment temperature, a homogenization treatment time, a heat intercalation temperature, a thermal interval pressure delay ratio, and a cold interstitial pressure delay in the production conditions of the aluminum alloy sheet. The reduction ratio, the intermediate annealing temperature, the time of the intermediate annealing, the time of the final annealing, and the like can be suppressed. Preferably, the peripheral side surface of the heat dissipating member for the LED bulb is smooth. That is, it is preferable that the peripheral side surface has no unevenness. The roughness of the material preferably has an average roughness (R a ) of 0.5 μm or less and a maximum roughness (R max ) of 5 μm or less. In this form, the structure of the heat dissipating member for the LED bulb is simple and can be further improved. Improve its productivity. In addition, it can reduce the cost of metal molds and is economical. Further, in the present invention, the precoated aluminum alloy sheet is formed by precoating a synthetic resin coating film containing a heat releasing substance on both surfaces or a single side of a substrate formed of an aluminum alloy sheet. From the viewpoint of further improving heat dissipation, it is preferable to pre-coat a synthetic resin coating film on both sides of the substrate. The above-mentioned synthetic resin coating film of the above-mentioned precoated aluminum alloy sheet can be selected from one layer coating or multi-layer coating depending on the desired thickness. Further, as long as the heat dissipation property can be ensured, other types of synthetic resin coating films can be applied in a superposed manner as needed, and the synthetic resin coating film can contain a pigment or the like, thereby providing more creativity. To a certain extent, to ensure that the surface area enhances the heat radiation effect, or if you want to have creative freedom, you can also apply sandblasting to the material, so that the surface of the material is rough, or the coating film contains - 10-201241357 Resin particles or the like thereby coarsening the surface roughness of the coating film itself. In the heat dissipating member for an LED light bulb of the present invention, the synthetic resin coating film preferably contains one or more of titanium oxide, carbon, cerium oxide, aluminum oxide, and zirconium oxide. Article 3 of the patent scope). As a result, the heat dissipation property of the synthetic resin coating film can be easily improved. The heat dissipation property of the above synthetic resin coating film is evaluated by the integrated radiance of infrared rays. In the present invention, it is preferable to adjust the integrated radiance of infrared rays to be 7 〇 % or more. In this way, stable heat dissipation characteristics can be obtained. The integrated radiance of infrared rays can be measured by comparing FT-IR with ideal black bodies. In addition, the synthetic resin coating film is a synthetic resin coating material containing a base resin containing a synthetic resin having a number average molecular weight of 50,000 to 40,000 as a main component, and preferably contains 50 parts by weight of the base resin 100. ~200 parts by weight of titanium oxide having an average particle diameter of 0.1 to 100 μm, and 1 to 25 parts by weight of carbon having an average particle diameter of 1 nm to 500 nm, and 50 to 200 parts by weight of cerium oxide, and 50 to 200 The alumina of the weight portion and one or more selected from the group consisting of chromium oxides having a weight of 50 to 200 parts (the fourth item of the patent application). Namely, in the above synthetic resin coating film, it is preferable to use a synthetic resin containing a main component of a number average molecular weight of 5,000 to 40,000 as a base resin. When the number average molecular weight of the synthetic resin is less than 5,000, there is a problem that the coating film is hard and the moldability is deteriorated. On the other hand, when the number average molecular weight of the synthetic resin is more than 40,000, There is a problem that the coating film is too soft and the scratch resistance is lowered. Further, the above-mentioned synthetic resin having a number average molecular weight of 5,000 to 40,000 is preferably a polyester. Further, when the synthetic resin coating film contains titanium oxide, it is preferred that the average particle diameter of the titanium oxide is in the range of 0.1 to 100 μm. When the average particle diameter of titanium oxide is less than 〇1 μηι, there is a problem that the infrared radiance is lowered. On the other hand, when the average particle size of cerium oxide exceeds ΙΟΟμηι, titanium oxide is detached from the coating film. In addition, the content of the titanium oxide contained in the synthetic resin coating film is preferably 50 to 200 parts by weight based on 100 parts by weight of the base resin. When the content of the titanium oxide is less than 50 parts by weight, there is a problem that the infrared radiance is lowered. On the other hand, when the content of the titanium oxide exceeds 2 Å, the titanium oxide is formed from the coating film. In the case where the synthetic resin coating film contains carbon, it is preferable to use a fine powder having a carbon particle diameter of from 1 nm to 500 nm. Further, the content of the synthetic resin coating film in the case where carbon is contained is preferably 1 to 25 parts by weight. When the content of carbon is less than 1 part by weight, there is a problem that the infrared radiance of the infrared ray is lowered. On the other hand, when the content of carbon exceeds 25 parts by weight, there is a problem that the amount of carbon detached from the coating film increases. . Further, the content of the synthetic resin coating film in the case where cerium oxide is contained is preferably 50 to 200 parts by weight. When the content of cerium oxide is less than 50 parts by weight, there is a problem that the infrared radiance of the infrared ray is lowered. On the other hand, when the content of cerium oxide exceeds 200 parts by weight, -12-201241357 The problem that the amount of cerium oxide falling off from the coating film increases. Further, the content of alumina in the synthetic resin coating film is preferably 50 to 200 parts by weight. When the content of alumina is less than 50 parts by weight, there is a problem that the infrared radiance is lowered. On the other hand, when the content of alumina exceeds 200 parts by weight, alumina is detached from the coating film. The problem of increasing quantity. Further, the content of the synthetic resin coating film in the case where chromium oxide is contained is preferably 50 to 200 parts by weight. When the content of zirconia is less than 50 parts by weight, there is a problem that the infrared radiance is lowered. On the other hand, when the content of zirconia exceeds 200 parts by weight, the amount of zirconia falling off from the coating film is present. Increased problem. Further, the film thickness of the synthetic resin coating film is preferably 0.5 to ΙΟΟμηι. When the film thickness is less than 5 μm, the infrared radiance of the infrared ray is lowered. On the other hand, when the film thickness exceeds 100 μm, there is a problem that the cost increases. Further, the synthetic resin coating film is a Ni (nickel) spherical inclusion containing at least an average particle diameter of 0.3 to ΙΟΟμηη, or a scaly Ni (nickel) having a thickness of 0.2 to 5 μm and having a long diameter of 2 to 50 μm. In addition, the total content of the two is preferably from 1 to 1,000 parts by weight based on 100 parts by weight of the base resin (the fifth item of the patent application). When the average particle diameter of the above Ni (nickel) spherical inclusions is less than 3 μπ1, there is a problem that the thermal conductivity is lowered. On the other hand, if it exceeds ... in time, there is a Ni (nickel) spherical shape. The problem that the amount of the filling material from the coating film is increased -13-201241357 In addition, when the thickness of the scaly Ni (nickel) ruthenium is less than 0.2 μm, the thermal conductivity is lowered. On the other hand, if it exceeds When 5μηι, there will be a problem of increased cost. In addition, when the long diameter of the scaly Ni (nickel) ruthenium is less than 2 μm, there is a problem that the conductivity is lowered. On the other hand, if it exceeds 50 μm, the scaly Ni (nickel) ruthenium is present. The problem of an increase in the number of peeling off of the film. Next, the total content of the Ni (nickel) ruthenium Ni (nickel) spheroids and the scaly Ni (nickel) ruthenium (including only one of them) is relative to the above The base resin has a weight of 1 to 1000 parts by weight. When the content is less than 1 part by weight, the thermal conductivity may be insufficient. On the other hand, when it exceeds 1 part by weight, there is a problem that the amount of Ni (nickel) ruthenium falling off from the coating film increases. In addition, it is preferable that the synthetic resin coating film contains one or two kinds of internal waxes of water-containing lanolin, carnauba, and polyethylene in an amount of 0.05 to 3 parts by weight based on the weight of the base resin 100 (application patent range) 6 items). In this way, the effect of improving the damage resistance can be obtained, and the workability can be improved. When the content of the internal wax is less than 5% by weight of the base resin 100, the scratch resistance is lowered. On the other hand, when it exceeds 3 parts by weight, agglomeration may occur. problem. Further, the synthetic resin coating film is preferably an upper layer of a coating type or a reactive chromate or chromate-free layer formed on the surface of the substrate (Application No. 7). In this form, it is possible to improve the tightness of the aluminum alloy-14-201241357 gold plate and the above-mentioned precoat layer, and it is possible to improve workability and durability. [Embodiment] A heat dissipating member for an LED bulb according to an embodiment of the present invention It is explained using Figs. 1 to 8. The heat dissipating member 1 for an LED bulb of this example is a heat dissipating member of the LED bulb 80 in which the LED element 8 is housed as shown in Fig. 8. In this example, a plurality of types of heat dissipating members 1 were produced, and their characteristics were evaluated. The heat dissipating member 1 which is an embodiment of the present invention, as shown in Figs. 2 to 5, is formed by press-molding the precoated aluminum alloy sheet 2 into a substantially conical shape. The peripheral side surface 1 of the heat dissipating member 1 is smooth, and has no irregularities or the like due to molding. As shown in Fig. 1, the precoated aluminum alloy sheet 2 is formed by precoating the synthetic resin coating film 21 containing the heat releasing substance 215 on both surfaces of the substrate 20 formed of the aluminum alloy sheet. The synthetic resin coating film 21 may contain a Ni (nickel) ruthenium (not shown). In the present embodiment, the synthetic resin coating film 21 is formed by forming the chemical conversion film 22 formed on the surface of the substrate 20. In this example, a plurality of types of precoated aluminum alloy sheets were used to fabricate a plurality of heat dissipating members (test pieces 1 to 30) to evaluate their characteristics. Hereinafter, the details of the manufacturing steps of the heat dissipating member 1 will be described in detail. <Pre-coated aluminum alloy sheet> -15- 201241357 As shown in Fig. 1, the precoated aluminum alloy sheet 2 for the heat radiating member 1 is produced. As the substrate 20, an alloy plate having a material-quality of 5N0 1-0 material and having a size of 1.5 mm thick x 100 mm wide x 100 mm long was prepared. Next, the both surfaces of the substrate 20 were degreased with an alkaline degreaser, and then the substrate 20 was immersed in a phosphoric acid chromate bath to carry out a chemical surface treatment. The obtained chemical conversion film (chromate chromate film) 22 is in a range in which the Cr (chromium) content in the film is 20 ± 5 mg/m 2 . Next, a synthetic resin coating film 21 is formed by coating a coating material on each of both surfaces of the substrate 20 on which the film 22 is formed. The coating was carried out using a bar coater, and the thickness of the synthetic resin coating film 21 was 30 μm. Further, the bake hardening condition of the synthetic resin coating film 21 is carried out by holding it in an oven at 240 ° C for 60 seconds so that the surface temperature can be 230 ° C. The composition of each of the samples containing the synthetic resin coating film 21 is disclosed in Tables 1 and 2 below. <Ming alloy plate> Further, in this example, for comparison, an aluminum alloy plate having no synthetic resin film on its surface was prepared. As the aluminum alloy plate, an aluminum alloy plate having a material size of 5N01-O material and having a size of 1.5 mm thick x 100 mm wide x 100 mm long is used, and the aluminum alloy is degreased with an alkaline degreaser on both sides. board. <Compression molding> Next, as shown in Fig. 2, the precoated aluminum alloy sheet 2 and the aluminum alloy -16-201241357 gold 20 were subjected to press molding several times. First, as shown in the second (a) and (b), the flat pre-coated aluminum alloy sheet 2 and the aluminum alloy sheet 20 are subjected to drawing processing to form the shape into a substantially conical shape. Body 1 5 1. At this time, in the small-diameter front end portion of the intermediate body 151, there is a bottom member 158, and around the large-diameter rear end portion, the periphery of the molded portion remains with the remaining portion 159. Next, as shown in the second (b) and (c), the bottom member 158 of the small-diameter front end portion of the substantially conical intermediate body 151 is cut, and the periphery around the large-diameter rear end portion is cut off. The quantity part is 1 59. The heat dissipating member 1 obtained has a shape having straight portions 18 and 19 in front and rear of the conical body portion as shown in Fig. 3. As shown in Fig. 3 and Fig. 5, the outer diameter D1 of the large diameter portion is about 53 mm. The small diameter D2 is about 25 mm. The total length L is about 45 mm. <Sample> For the embodiment of the present invention in which the precoated aluminum alloy sheet 2 was processed as the material in the state of Figs. 3 to 5, the sample 1 to the sample 3 0 'prepared for use were prepared. In the comparative example in which the above-described aluminum alloy sheet 20 having the synthetic resin coating film was not coated, the sample 31 was prepared as a material in the state of Fig. 3 to Fig. 5, and the evaluation was as shown in Fig. 8. The display is performed using an LED bulb 80 made of each of the test pieces (test body 1 to test piece 31) as a heat radiating member. LED bulb 80 -17- 201241357, as shown in the figure, is a combination of a cover body 3 [Fig. 6 (a) and (b), Fig. 7] and a heat dissipating member 1 which are formed by press molding an aluminum alloy plate. Four LED elements 8 (only two are shown) and their control portions are disposed on the upper surface of the lid body 3, and the heat-dissipating member 1 is provided with a socket portion 86 interposed therebetween, and covers the dome dome cover for covering the lid body 3. Made after 85. As shown in FIGS. 6(a) and 6(b) and 7th, the lid body 3 has a disk shape, and a concave portion 31 which is recessed from the periphery is formed on the surface of the hemispherical dome cover side, and the heat dissipating member 1 is formed. On the side, a convex portion 32 protruding from the periphery is formed. The LED element 8 is a white LED element having a heat generation type of 85 °C. In the evaluation method, a thermocouple tube (not shown) for measuring temperature is attached to the surface of the lid member 3 in the vicinity of the LED element 8 of the LED bulb 80, and the temperature after the electroluminescence is emitted for 20 minutes is measured. The initial temperature is room temperature (28 ° C). When the temperature after 1 to 20 minutes was 5 5 ° C or less, it was evaluated as ◎, and when it was more than 5 5 ° C and 65 ° C or less, it was evaluated as 〇, exceeding 65. (: It is evaluated as X. The result is disclosed in Table 1 and Table 2. -18- 201241357 [Table i] ί ◎ ◎ 〇 ◎ ◎ 〇 ◎ ◎ ο ◎ ◎ 〇 ◎ ◎ 〇. ◎ ◎ 〇 1_ρ ιο 〇 〇tn m 守<〇α> ^ LO ^ CO S !? 2 ooo LO IO CO 1ft CS4 iO LO CO o ^ LO LO CO I 恶% % 敲件敲 ' ' m Έ ^ ^ 辞 S' ς ^ 琅~ ~ 侍 m 枓豳*· ' (ωτ/) Sfi 翻 Ο 〇〇 〇Γc〇Γ0 ο ο ο Γ0 CO C0 ooo O CO CO ooo CO CO ο ο ο CO CO CO 1 S m S 细 | ο ο Ο Ο Ο * 镝 _ *w Stuff 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 镝dMI _ s»-〇1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 瘁m sharp snail m /—·* m _ «1γπ11 Pm t \ \ » \ 1 1 1 1 1 1 \ 1 » 1 S 1 § SS Secret Sn _ ¢8 1 1 1 1 1 1 1 1 1 SI § 1 1 1 « 1 1 as 调« 1 1 1 1 1 1 1 1 1 S § § 1 1 1 1 1 1 <-> _ _ 1 1 1 1 1 1 -ss 1 1 1 1 1 1 1 1 1 Nader n Feet S 1 5 ο ο ο ο ο ο \ 1 1 » 1 1 1 1 I 1 1 1 s Rong » § ±Ζ 篯«Ί ft 哭 X—<» \ 1 1 1 1 \ 1 \ 1 1 1 1 1 1 1 \ 1 1 113⁄43⁄4 Νμ·» 1 1 1 1 1 Drawing 1 1 1 1 1 1 1 1 1 1 1 1 Age Diameter (//m) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 |8 Fun 1 ^>· 5 § ρ ° —— ^ 5§1 1 1 1 1 1 1 1 1 1 醒 ▼- CM C0 ^ in co 卜 CO ΟΪ O <NI CO 寸 IO <〇卜》 -19- 201241357 [Table 2] 1 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ X 12 After the clock (0C) CM O CO m in CO 00 ^ ιο ^ ιη co o 兮ιο m in CM 〇 ^ in in io ο 1 Example of the invention " 1 "Inventive Example // // Inventive Example // // Inventive Example " //Comparative Example Let Thickness ("m) ο ο ο CO co co ο ο ο CO CO co ο ο ο CO CO co ο ο ο CO CO co 1 1 m & Μ Ο Ο Ο ο ο ο ^ »» τ* ο Ni (nickel) 鳞 scales • 0—S Μ 润 1 1 1 1 1 I ooo ▼— ▼ -· 1 1000 0.5 1 i S3 Fine ο ο ο V» -is 1 1 1 1 1 I 1 Heat-dissipating material oxidation pin 1 1 I ι 1 1 ο 1 1 1 1 1 1 1 Alumina ss β Touch 1 1 I 1 Ο I 1 1 1 ί 1 1 1 二 矽 _ 蝴 1 1 I Ο 1 ι 1 1 1 1 I ι 1 Stepping into itmli ΡΠ ίο ιη ιο 1 1 I 1 1 1 1 \ I 1 Titanium oxide m 剧 ¢ ) ) ) ) ) ) ) ) ) ) ) ) * * * * * * S S S 1 S 1 1 1 1 1 1 1 1 S S S S S S S S S S S S S S S S S S S S S S S S S S S ("m) 1 \ 1 1 1 1 CM CM CM τ-· V-1 Long diameter (/im) 1 \ 1 \ 1 I 2 « 5 CS| CSJ CSJ 1 1 Diameter (i<m) sis ο ο ο ίο mm 1 1 1 1 1 1 1 Radiation material titanium oxide particle size (A/m) 1_ »— ^― »— τ— 1 〇 〇 〇 » » » » CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CN CM CM Csl go σ> ο CM CVJ C0 -20-201241357 It is known from Tables 1 and 2 that the heat-dissipating members for the LED bulbs of the specimens 1 to 30 of the embodiment of the present invention are compared with the specimen 3 of the comparative example. 1, its heat dissipation performance is superior. Further, the heat radiating members for LED lamps of the test pieces 1 to 30 have a simple structure having a substantially conical shape, and can be manufactured with good productivity by press molding, and can be manufactured at low cost. Therefore, according to the present embodiment, it is possible to provide a heat dissipating member for an LED bulb which is excellent in heat dissipation performance, simple in construction, excellent in productivity, and low in cost, and can realize a high-performance and inexpensive LED bulb. (Example 2) This example is an example in which a heat dissipating member for an LED bulb is produced using an aluminum alloy sheet having an average crystal grain size. First of all, as a substrate, it is made of a material-quality A1050-0 material, a size of 0.8mm thick xlOOmm wide xlOOmm long Ming alloy plate. In the present example, the manufacturing method at the time of producing an aluminum alloy sheet was adjusted to produce four types of alloy sheets having an average crystal grain size of 37 μm, 86 μm, and 125 μm 3 3 50 μm. The average crystal grain size ' of the alloy plate was measured as follows. That is, first, the calendering surface was subjected to electrolytic honing, and the optical microscope structure passing through the polarizing filter was photographed at a magnification of 50 to 100 times with respect to the rolling surface. Next, the average crystal grain size was measured by three line interception methods per field of view. Next, each of the aluminum alloy sheets was used, and the same manner as in Example 1 was used. The film was formed into a precoated aluminum alloy sheet under the same conditions as those of the sample 1 of Example 1. In the same manner as in the first embodiment, the heat-dissipating members (test pieces 32 to 35) having four types of substantially conical shapes having different average crystal grain sizes of the alloy sheets were produced. The average crystal grain size of each test piece is shown in Table 3. Next, with respect to the test piece 32 to the test piece 35, the skin of the surface skin and the bent portion of the upper end portion of the substantially conical heat dissipating member was visually observed, and the sensory evaluation was performed. When there is no orange peel and it is smooth, it is evaluated as "〇", and when it is orange peel, it is evaluated as "X". The results are revealed in Table 3» [Table 3] (Table 3)
試體Ν 〇. 平均結晶粒徑（μ m) 表面性狀的評估 試體32 37 〇 試體33 86 〇 試體34 125 X 試體35 350 X 從表3得知’使用平均結晶粒徑1 〇 〇 μπι以下的鋁合金板 製成之試體32及試體33的散熱構件，是沒有橘皮，表面性 狀良好。相對於此，平均結晶粒徑超過100 μπι的試體34及 試體3 5是呈現橘皮。 因此，就可得知根據本例時，使用平均結晶粒徑 ΙΟΟμιη以下的鋁合金板是能夠抑制橘皮產生。 【圖式簡單說明】 第1圖爲表示實施例1之預塗膜鋁合金板的構造說明圖 -22- 201241357 第2圖爲表示實施例1之散熱構件的成型方法說明圖。 第3圖爲實施例1之散熱構件的側面圖。 第4圖爲實施例1之散熱構件的底面圖。 第5圖爲實施例1之散熱構件的剖面圖（第3圖的a · A剖 線剖面圖）。 第6圖爲實施例1之蓋體的平面圖（上面圖）（a)及 底面圖（下面圖）（b)。 第7圖爲實施例1之蓋體的剖面圖[第6 ( a)圖的B-B剖 線剖面圖]。 第8圖爲表示實施例1之LED燈泡的說明圖。 【主要元件符號說明】 1 : LED燈泡用散熱構件 1 〇 :外圍側面 2 :預塗膜鋁合金板 20 :基板 2 1 :合成樹脂塗膜 8 : L E D元件 80 : LED燈泡 -23-Test Ν 〇. Average crystal size (μ m) Evaluation of surface properties 32 37 〇 Test 33 86 〇 Test 34 125 X Test 35 350 X From Table 3, 'Using average crystal grain size 1 〇 The heat-dissipating members of the test piece 32 and the test piece 33 made of an aluminum alloy plate of 〇μπι or less have no orange peel and have good surface properties. On the other hand, the test piece 34 and the test piece 35 having an average crystal grain size of more than 100 μm were orange peel. Therefore, it is understood that the use of the aluminum alloy sheet having an average crystal grain size of ΙΟΟμη or less can suppress the occurrence of orange peel according to the present example. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing the structure of a precoated aluminum alloy sheet of Example 1. Fig. -22-201241357 Fig. 2 is an explanatory view showing a molding method of the heat dissipating member of the first embodiment. Fig. 3 is a side view showing the heat dissipating member of the first embodiment. Fig. 4 is a bottom plan view showing the heat dissipating member of the first embodiment. Fig. 5 is a cross-sectional view showing a heat dissipating member of the first embodiment (a cross-sectional view taken along line a·A of Fig. 3). Fig. 6 is a plan view (top view) (a) and a bottom view (below) (b) of the cover of the first embodiment. Fig. 7 is a cross-sectional view of the lid body of the first embodiment [cross-sectional view taken along line B-B of Fig. 6 (a)]. Fig. 8 is an explanatory view showing an LED bulb of the first embodiment. [Main component symbol description] 1 : Heat dissipation member for LED bulb 1 〇 : Peripheral side 2 : Pre-coated aluminum alloy plate 20 : Substrate 2 1 : Synthetic resin coating 8 : L E D component 80 : LED bulb -23-