201132856 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種散熱風扇，尤其是一種可減少整 體軸向高度的散熱風扇。 【先前技術】 習知散熱風扇大致可區分為軸流式散熱風扇及鼓風 式散熱風扇兩種。請參照第1圖所示，係揭示較為常見之 習知軸流式散熱風扇6’該散熱風扇6大致具有一扇框 61、一定子62、一轉子63及一電路板64。該扇框61具 有一基座611，該基座611結合一軸管612 ;該定子62結 合於該扇框61之轴管612 ;該轉子63包含一輪轂631、 數個葉片632及一永久磁鐵633，該輪轂631可旋轉地結 合該軸管612，各該葉片632結合於該輪轂631之外侧周 面，該永久磁鐵633係結合於該輪轂631内侧；該電路板 64具有用以驅動該定子62的數個電子元件641 (例如電 阻、電容、……等）；藉此’該永久磁鐵633與該定子62 之間可形成氣隙，以便該電路板64之各電子元件641控 制該定子62通電產生磁場後，即可驅動該轉子63旋轉作 動。 由於上述習知軸流式散熱風扇6之電路板64係將各 該電子元件641設置於該基座611與該輪轂631之間，因 此’於實際使用時，仍具有如下所述之諸多問題（本文雖 以軸流式散熱風扇為例，惟鼓風式散熱風扇亦具有相同問 題）： 201132856 1、 散熱效果不佳：該電路板64之各電子元件641 缺乏適當散熱機制，倘若各該電子元件641運作時所產生 之熱此無法立即驅散，則過高之溫度將容紐低各該電子 το件641之運作魏，甚至可能影響絲祕扇6之使用 壽命。 2、 無法縮減軸向高度：由於各該電子元件641位 於忒基座611與該輪轂631之間，導致該基座611與該輪 631之間必須具有—間距’該間距之軸向高度必須提高 ^足以供各該電子元件641容置且不會影響該轉子63之 旋轉作動’因此，該散熱風扇6之整體軸向高度不易縮 減，無法朝向更輕薄短小的方向研發設計。 々. 為解決上述問題，本發明之申請人研發有如下所述 之數種散熱風扇，其中： 晴參照第2圖所示，係為中華民國第129〇673號「散 熱風扇」專利案，該習知散熱風扇7包含一殼體71、一 屬輪72及一電路板73。該殼體71及該扇輪72保持特定 之相對組裝關係，該扇輪72具有一輪轂721，該輪轂721 之外周面形成數個葉片722，該電路板73結合於該殼體 71 之一基座711表面且具有數個電子元件，各該電子元 件區分為發熱電子元件731及未發熱電子元件732。該習 知散熱風扇7主要係將該電路板73之至少一發熱電子元 件731由該基座711凸伸至該扇輪72之葉片722的下風 處。藉此，該扇輪72所驅動之氣流亦可同時降低該發熱 電子元件731之溫度，以提高該散熱風扇7之使用壽命。 上述習知散熱風扇7雖將至少一發熱電子元件731 201132856 移至該葉片722的下風處，以提供該電路板73較佳的散 熱機制。然而，由於該電路板73之未發熱電子元件732 及部分發熱電子元件731仍位於該基座711與該輪轂721 之間，因此，該基座711與該輪轂721之間的間距並無法 進一步縮小，依然無法解決該散熱風扇7之整體軸向高度 不易縮減等問題。 請參照第3圖所示，係為中華民國申請第872〇8714 號「可定向送風之超薄風鼓改良構造」專利案，該習知散 熱風扇8具有一底座81，該底座81可供結合一扇輪82 ; 另外，該底座81亦結合一電路板83，該電路板83具有 數個電子元件，各該電子元件區分為感應元件831及控制 件832，該感應元件831局部埋設於該電路板83之一沉 孔83^内，該控制件832位於該扇輪82的徑向旋轉範圍 外，藉此，以便進一步縮減該散熱風扇8之整體軸向 度。 上述習知散熱風扇8雖將該控制件832移至該扇^ 82的徑向旋轉範圍外，以達到縮減該散熱風扇8之整《 軸向南度的目的。然而’亦由於該控制件832位於該· 82的徑向旋轉範圍外，導致該散熱風扇8的整體寬心 $對增加，因此’該習知散熱風扇8雖可達到縮減轴η 的’但反而造成該散編^8的整體寬度增加 故仍無法朝向更輕薄短小的方向研發設計。再者，該電足 = 83^，另加工形成該沉孔如以供容置該感應心 導致結構禝雜度亦相對增加；另外，亦由於該控 件832位於該扇輪82的徑向旋轉範圍外，因此，該“ 201132856 主仏予°亥控制件832的散熱效果仍相當有限。 。「:參照第4圖所示，係為中華民國申請第m337965 #b「散熱風扇」專利案，該習知散熱風扇9包含-框體 扇輪92。该框體％之一侧框邊形成一承載部 911 ’以供設置-驅動電路板93 ;該扇輪％則可旋轉地 設置於該框體91内。 上述習知散熱風扇9更進-步將該驅動電路板％設201132856 VI. Description of the Invention: [Technical Field] The present invention relates to a heat dissipating fan, and more particularly to a heat dissipating fan which can reduce the overall axial height. [Prior Art] Conventional cooling fans can be roughly classified into an axial flow type cooling fan and a blast type cooling fan. Referring to Fig. 1, a relatively common axial flow type cooling fan 6' is disclosed. The heat dissipating fan 6 has a frame 61, a stator 62, a rotor 63 and a circuit board 64. The fan frame 61 has a base 611. The base 611 is coupled to a shaft tube 612. The stator 62 is coupled to the shaft tube 612 of the frame 61. The rotor 63 includes a hub 631, a plurality of blades 632 and a permanent magnet 633. The hub 631 is rotatably coupled to the shaft tube 612. Each of the blades 632 is coupled to an outer peripheral surface of the hub 631. The permanent magnet 633 is coupled to the inside of the hub 631. The circuit board 64 has a mechanism for driving the stator 62. a plurality of electronic components 641 (eg, resistors, capacitors, ..., etc.); thereby forming an air gap between the permanent magnet 633 and the stator 62 such that the electronic components 641 of the circuit board 64 control the stator 62 to be energized After the magnetic field is generated, the rotor 63 can be driven to rotate. Since the circuit board 64 of the above-described axial flow type cooling fan 6 is disposed between the base 611 and the hub 631, it has many problems as described below (in actual use). Although the axial flow type cooling fan is taken as an example, the blast-type cooling fan also has the same problem): 201132856 1. The heat dissipation effect is not good: the electronic components 641 of the circuit board 64 lack proper heat dissipation mechanism, provided that the electronic components The heat generated by the operation of 641 cannot be dispelled immediately. If the temperature is too high, the operation of the electronic το 641 will be affected, and may even affect the service life of the silk fan 6. 2. The axial height cannot be reduced: since each of the electronic components 641 is located between the crucible base 611 and the hub 631, the base 611 and the wheel 631 must have a spacing - the axial height of the spacing must be increased. ^ is sufficient for each of the electronic components 641 to be accommodated without affecting the rotational operation of the rotor 63. Therefore, the overall axial height of the cooling fan 6 is not easily reduced, and the design cannot be developed in a direction that is lighter, thinner, and shorter. In order to solve the above problems, the applicant of the present invention has developed several kinds of cooling fans as described below, wherein: The clearing is shown in FIG. 2, which is the "heating fan" patent case of the Republic of China No. 129〇673. The conventional cooling fan 7 includes a housing 71, a wheel 72 and a circuit board 73. The housing 71 and the fan wheel 72 maintain a specific relative assembly relationship. The fan wheel 72 has a hub 721. The outer circumferential surface of the hub 721 forms a plurality of blades 722. The circuit board 73 is coupled to one of the housings 71. The seat 711 has a plurality of electronic components on its surface, and each of the electronic components is divided into a heat generating electronic component 731 and an unheated electronic component 732. The conventional cooling fan 7 mainly extends at least one heat generating electronic component 731 of the circuit board 73 from the base 711 to the downwind of the blade 722 of the fan wheel 72. Thereby, the airflow driven by the fan wheel 72 can simultaneously lower the temperature of the heat-generating electronic component 731 to improve the service life of the heat-dissipating fan 7. The conventional heat dissipating fan 7 moves at least one heat-generating electronic component 731 201132856 to the downwind of the blade 722 to provide a preferred heat dissipation mechanism for the circuit board 73. However, since the unheated electronic component 732 and the partially heated electronic component 731 of the circuit board 73 are still located between the base 711 and the hub 721, the distance between the base 711 and the hub 721 cannot be further reduced. However, it is still impossible to solve the problem that the overall axial height of the cooling fan 7 is not easily reduced. Please refer to FIG. 3, which is a patent application of the "Organized Air Supply Ultra-thin Wind Drum Improvement Structure" No. 872〇8714 of the Republic of China. The conventional cooling fan 8 has a base 81, which can be combined. In addition, the base 81 is also combined with a circuit board 83 having a plurality of electronic components, each of which is divided into an inductive component 831 and a control component 832. The inductive component 831 is partially embedded in the circuit. In one of the counterbodies 83 of the plate 83, the control member 832 is located outside the radial rotation range of the fan wheel 82, thereby further reducing the overall axial extent of the heat dissipation fan 8. The above-mentioned conventional cooling fan 8 moves the control member 832 outside the radial rotation range of the fan 82 to reduce the entire axial southward extent of the cooling fan 8. However, because the control member 832 is located outside the radial rotation range of the 82, the overall center of the heat dissipation fan 8 is increased. Therefore, the conventional heat dissipation fan 8 can reduce the axis η but cause As the overall width of the loose package ^8 increases, it is still impossible to develop the design in a direction that is lighter, thinner and shorter. Furthermore, the electric foot = 83^, and the additional processing to form the counterbore for accommodating the sensing core causes a relative increase in structural complexity; in addition, since the control 832 is located in the radial rotation range of the fan wheel 82. In addition, the "201132856 main 仏 ° ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ It is understood that the cooling fan 9 includes a frame fan 92. One of the frame bodies constituting a side portion of the frame body 911' is provided for driving the circuit board 93; the fan wheel % is rotatably disposed in the frame body 91. The above-mentioned conventional cooling fan 9 further advances the driving circuit board %
置於該框體91之-側所形成的承載部m，故亦可縮減 該散熱風扇9之整體軸向高度。然而，由於該框體91之 ϋ形;^該承載部911 ’因此’同樣導致該散熱風扇9 的整體寬度必彡_對增加’且龜體91的結構複雜度亦 相對提高，仍無法朝向更輕薄短小的方向研發設計，並增 加整體製造成本。 曰 【發明内容】 本發明目的乃改良上述各種習知散熱風扇缺點，在 不增加J框㈣寬度的條件下’提供1可有效縮減軸向 高度的散熱風扇。 本發明另，目的’係提供-種兼具有較佳散熱效果 的散熱風扇。 本發明又，目的’係提供-種結構較為精簡的散熱 風扇 為達到前述發明目的，本發明所運用之技術内容如 下： 禮 線圈組、一扇輪及 散熱風扇’包含一扇框、 201132856 一電路板。該扇框具有一側牆部，該側牆部内側設有一基 座’該基座設有-軸接部；該線圈㈣合於該:框之二 側；該扇輪包含-輪穀、數個葉片及一永久磁鐵，該輪穀 結合該軸接部，各該葉片設於該輪轂之外周面，各該葉片 係具有-徑向旋轉範圍’且各該葉片分別具有朝向^基座 的一端緣，各該葉片之端緣至該基座之間形成一容置空 間’該永久磁鐵結合於該輪轂内側並與該線圈組之間形成 氣隙’§亥電路板結合於該扇框之基座且電性連接爷線圈 組，該電路板設有至少一電子元件，該至少一電子元件設 置於该容置空間且位於各§亥葉片的控向旋轉範圍内。 此外’本發明散熱風扇亦可包含一扇框、一線圈 組、一扇輪及一電路板。遠扇框具有一側牆部，該侧踏部 内側設有一基座，該基座設有一軸接部；該線圈組結合於 該扇框之内侧；該扇輪包含一輪轂、數個葉片及一永久磁 鐵’§玄輪毅結合3亥轴接部’各δ亥葉片藉由一連接部與該輪 轂相互結合’各該葉片分別具有一第一端及一第二端，該 第一端靠近該輪轂’該第二端遠離該輪轂，在該扇輪之轴 向上’各該葉片及該連接部至該基座之間形成一容置空 間，各該葉片之第二端與該輪轂的外周面之間具有一徑向 旋轉範圍，該永久磁鐵結合於該輪轂内側並與該線圈組之 間形成氣隙；該電路板結合於该扇框之基座且電性連接該 線圈組’該電路板設有至少一電子元件，該至少—電子元 件設置於該容置空間且位於各該葉片的徑向旋轉範圍内。 【實施方式】 201132856 為讓本發明之上抽〔芬甘 上^及其他目的、特徵及優點能更明 式，作詳細說明如下：#遺心例，並配合所附圖 請參照第5、6及7圄张- 熱風扇i包含―扇框u、圖^，本發明第—實施例之散 路板14。本實施例所揭、彳組12、—扇輪13及一電 切埶W ^ U主要係應用於「軸流 圈 框11内側，該電路板14電性連接該線圈組12:::= 過该線圈組12驅動該扇輪13旋轉作動。 該扇框11具有一側牆部⑴，該側牆部m設有一 亡二?及一出風口 113;又，該侧牆部m内側設有 基座，该基座114設有一軸接部115，該轴接部 115可選擇-體結合該基座114 #組裝於該基座U4上. 於本實施例中’該基座m係藉由數個連接件116盘該側 牆部m相互連接，該連接件116可為靜葉或肋條之設 計，以構成「軸流式散熱風扇之扇框」。 該線圈組12結合於該扇框U之内側。其中該線圈组 U可直接結合於雜接部115之外周面，或者，該線圈 組12亦可直接結合於該扇框n之基座114或其他適當部 位。 田 該扇輪13包含一輪轂131、數個葉片132及—永久 磁鐵133。該輪轂131可旋轉地結合該軸接部Μ〗，且續 輪轂131具有朝向該基座m的—底端131a，該底= 131a與該基座114之間具有一間隙（D);各該葉片-132 201132856 設於該輪轂131之外周面，其中如第6及7圖所示，各該 葉片132係具有一徑向旋轉範圍（尺），且各該葉片132 分別具有朝向該基座114的一端緣132a，在該扇輪13之 軸向上，各該葉片132之端緣132a至該基座114之間形 成谷置空間134，該永久磁鐵133係結合於該輪數 内側，且該永久磁鐵133與該線圈組12之間具有氣隙。 該電路板14結合於該扇框n之基座114，且該電路 板14電性連接該線圈組12。又，該電路板14設有用以 驅動该線圈組12作動的數個電子元件mi (可視需求整 合為單一個電子元件），各該電子元件141設置於該容置 空間134且位於各該葉片132的徑向旋轉範圍（R)内， 令各該電子元件141相對位於該底端i3la與該基座114 之間所形成的間隙（D)之外，以便縮減本發明散熱風扇 1之整體轴向高度。 更s羊§之，在該扇輪13之軸向上，該輪穀131的底 h 131a至§亥基座114的距離，係小於各該葉片132的端 緣132a至該基座114的距離；藉此，使得該端緣132a與 該底端131a之間具有一高度差，以便利用該高度差形成 該容置空間134。 本發明第一實施例之散熱風扇1的主要特點在於： 該電路板14之各電子元件141係位於該扇輪13之各葉片 132的下風處’因此’當該扇輪13於旋轉作動的過程 中’該扇輪13所驅動之氣流可直接提供各該電子元件 Ml較佳的散熱敢果。另外，本發明散熱風扇1更將該電 路板14之各電子元件141移至各該葉片132的徑向旋轉 201132856 la圍⑻’且各該電子元件141係設置於該容置空間 134、藉此，使得該底端13丨3與該基座114之間所形成的 間隙jD)未容納任何的電子藉⑷，因此，該扇輪13 之輪叙131的底端i3ia可更為貼近於該電路板μ，以有 效降低該散熱風扇1之整體軸向高度。 更重要的是，亦由於該電路板14之各電子元件141 係位於4扇輪13之各葉片132的徑向旋轉範圍（尺） 内，使得本發明散熱風扇1無須為了降低整體軸向高度， 而將各該電子元件141設置該扇輪13的徑向旋轉範圍之 外，因此，本發明之扇框u無須增加寬度或設計其他可 容納電路板14的結構設計（如第3及4圖所示的眷知散 熱風扇8、9);整體而言，本發明散熱風扇1可在不增加 扇框11整體寬度或增加結構複雜度的條件下，提供一種 可確實有效縮減軸向高度且結。構更為精簡的散熱風扇1。 請參照第8、9及1〇圖所示，本發明第二實施例之 散熱風扇2包含一扇框21、一線圈組22、一扇輪23及一 電路板24。本實施例所揭示之扇框21主要係應用於「鼓 風式散熱風扇」，並適用於無感測器馬達之散熱風扇；該 線圈組22結合5亥扇框21，該扇輪23可旋轉地結合於該 扇框21内側，該電路板24電性連接該線圈組22，用以 透過該線圈組22驅動該扇輪23旋轉作動。 該扇框21具有一侧牆部211，該側牆部211設有一 入風口 212及一出風口 213，其中該入風口 212較佳可設 置一蓋板216，該蓋板216設有連通該入風口 212的一穿 孔216a，該出風口 213係位於該扇框21之侧邊；又，該 201132856 側牆部211内側設有一基座214，該基座214設有—軸接 部215 ;於本實施例中，該基座214之外周緣係連接該侧 牆部211，使該側牆部211可圍繞該基座214，以構成 「鼓風式散熱風扇之扇框」。 該線圈組22結合於該扇框21之内側。其中該線圈 組22可直接結合於該軸接部215之外周面，或者，該線 圈組22亦可直接結合於該扇框21之基座214或其他適當 部位。 該扇輪23包含一輪轂231、數個葉片232及一永久 磁鐵233。該輪轂231可旋轉地結合該軸接部215，且該 輪轂231具有朝向該基座214的一底端231a，該底端 231a與該基座214之間具有一間隙（〇);各該葉片232 設於該輪轂231之外周面，其中如第9及1〇圖所示，各 該葉片232係具有一德向旋轉範圍（r)，且各該葉片232 分別具有朝向該基座214的一端緣232a，在該扇輪23之 轴向上，各該葉片232之端緣232a至該基座214之間形 成一容置空間234 ;該永久磁鐵233係結合於該輪轂231 内側，且該永久磁鐵233與該線圈組22之間具有氣隙。 該電路板24結合於該扇框21之基座214，且該電路 板24電性連接該線圈組22。又，該電路板24設有用以 驅動該線圈組22作動的數個電子元件241 (可視需求整 合為單一個電子元件），各該電子元件241設置於該容置 空間234且位於各該葉片232的徑向旋轉範圍内， 令各该電子元件241相對位於該間隙（D)之外。 更詳言之，在該扇輪23之軸向上，該扇輪23之各 一 12 — 201132856 葉片232連接該輪轂231之一端的輛向高度，係小於各葉 片232遠離該輪轂231之一端的車由向高度，使得各該葉片 232鄰近該輪轂231之一端具有足夠容納各該電子元件 241的容置空間234，而遠離該輪穀231之一端則具有較 大的驅風面積’以便該扇輪23自上方引進氣流通過該入 風口 212後，可更有效地藉由各該葉片232將氣流侧向推 出至該出風口 213。舉例而言，本實施例之各該葉片232 係於連接該輪轂231之一端的端緣232a形成一凹槽，該 凹槽係作為該容置空間234，藉此，該扇輪23於旋轉作 動時，可確保該扇輪23之各葉片232更不易碰觸到各該 電子元件24卜 ;.. <· ' ·；ι，ίί *- · 本發明第二實施例之散熱風扇2與前述第一貧施例 之散熱風扇1皆可利用該扇輪23提供各該電子元件241 車父佳的散熱效果，並同樣可在不增加扇框21整體寬度的 條件下，有效降低該散熱風扇2之整體軸向高度。更重要 的是，基於一般「鼓風式散熱風扇之扇框」之扇輪23的 導流方向（自上方引進氣流並侧向推出氣流），因此，當 各，片232連接該輪轂231之一端的軸向高度小於遠離該 輪單又231之一端的軸向高度時，各該葉片232遠離該輪轂 23ι之一端係具有較大的驅風面積，以利於該扇輪23進 行散熱作用，另外，更可方便使各該電子元件241直接位 於各該葉片232連接該輪轂231之一端所形成的該容置空 間234内，在組裝使用上亦相當便利；故本發明之主要技 術特徵更佳適用於「鼓風式散熱風扇」。 請參照第11、12及13圖所示，本發明第三實施例馬 —13 — 201132856 達轉動件係包含-雜3卜—線_ 32_ 電路板34。其中本實施例之扇框31及線圈组32^: 實之扇框21及_組22 _構細目同，在此^ 本發明第三實施例之扇輪33與第二實施例之扇輪Β 的差異在於：該扇輪33包含-輪數331、數個葉片切、 -永久磁鐵333。該輪穀331同樣結合於該扇框3 _ 接部315 ;各該葉>；332係藉由—連接部33s與該 - 331相互結合，在該扇輪33>之轴向上，各該葉片^^ . 該連接部335至該基座314之間形成一容置空間334;該馨 永久磁鐵333係結合於該輪轂331内侧，且該永久磁^ 333與該線圈組32之間具有氣隙。 更詳言之，本實施例中，該連接部335包含數個肋 條335a及一環圈335b ’各該肋條335a之一端連接該輪 轂331之外周面，另一端連接該環圈335b，使該環圈 335b可圍繞各該肋條335a及該輪轂331 ;又，各該葉片 332分別結合於該環圈335b，且各該葉片332具有一第一鲁 步而332a及一第二端332b ’該第一端332a靠近該輪轂 331，該第二端332b遠離該輪轂；331，其中如第13圖所 不，各該葉片332之第二端332b與該輪轂331的外周面 之間具有一徑向旋轉範圍（R)。 - 該電路板34結合於該扇框31之基座314，且該電路 板34電性連接該線圈組32。又，該電路板34設有用以 驅動該線圈組32作動的數個電子元件341 (可視需求整 合為單一個電子元件）’各該電子元件341設置於該容置 201132856 • ㈣334且位於各該葉片332的經向旋轉範圍（R)内； - 纟中在該扇輪33之轴向上’各該電子元件341較佳與該 連接部335相對。 本發明第三實施例之散熱風扇3與前述第一及第二 實施例之散熱風扇1、2相較，亦可_該扇輪33提供各 胃電子兀件341較佳的散熱效果’並同樣可在不增加扇框 31整體寬度的條件下，有效降低該散熱風扇3之整體軸 向高度。 _ 由上得知，本發明散熱風扇1、2、3確實可在不增 加扇框11、21、31整體寬度的條件下，有效降低該散^ 風扇1、2、3之整體軸向高度，並兼具有散熱效果隹及結Since the bearing portion m formed on the side of the frame body 91 is provided, the overall axial height of the heat radiating fan 9 can be reduced. However, due to the shape of the frame 91, the bearing portion 911 'so' also causes the overall width of the heat dissipation fan 9 to be increased _ to increase 'and the structural complexity of the turtle body 91 is relatively increased, and still cannot be oriented further. R&D design in a light and short direction and increasing overall manufacturing costs. SUMMARY OF THE INVENTION An object of the present invention is to improve the above-described drawbacks of various conventional heat dissipating fans, and to provide a heat dissipating fan which can effectively reduce the axial height without increasing the width of the J frame (four). Another object of the present invention is to provide a cooling fan having a preferred heat dissipation effect. In addition, the present invention provides a cooling fan with a relatively simple structure to achieve the foregoing objects. The technical contents of the present invention are as follows: a coil set, a fan wheel and a cooling fan 'including a frame, 201132856 a circuit board. The fan frame has a side wall portion, and a pedestal is disposed on the inner side of the side wall portion. The pedestal is provided with a shaft joint portion; the coil (4) is combined with the two sides of the frame; the fan wheel includes - the valley, the number a blade and a permanent magnet, the wheel valley is coupled to the shaft joint, each of the blades is disposed on a peripheral surface of the hub, each of the blades has a radial rotation range and each of the blades has an end facing the base a rim, an accommodating space is formed between the edge of each of the blades and the pedestal. The permanent magnet is coupled to the inner side of the hub and forms an air gap with the coil assembly. The circuit board is coupled to the base of the frame. The circuit board is provided with at least one electronic component, and the at least one electronic component is disposed in the accommodating space and is located within a range of the steering rotation of each of the blades. In addition, the heat dissipation fan of the present invention may further comprise a frame, a coil set, a fan wheel and a circuit board. The far fan frame has a side wall portion, and a base is disposed on the inner side of the side step portion, the base portion is provided with a shaft joint portion; the coil group is coupled to the inner side of the fan frame; the fan wheel includes a hub, a plurality of blades and A permanent magnet ' 玄 轮 毅 结合 结合 3 亥 亥 ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' The second end of the hub is away from the hub, and an accommodating space is formed between the blade and the connecting portion to the base in the axial direction of the fan wheel, and the second end of each of the blades and the hub a radial rotation range between the outer peripheral surfaces, the permanent magnet is coupled to the inner side of the hub and forms an air gap with the coil assembly; the circuit board is coupled to the base of the fan frame and electrically connected to the coil assembly The circuit board is provided with at least one electronic component disposed in the accommodating space and located within a radial rotation range of each of the blades. [Embodiment] 201132856 For the purpose of making the above-mentioned pumping and other objects, features and advantages of the present invention more clear, the following is a detailed description: #遗心例, and with reference to the drawings, please refer to the fifth and sixth And 7 sheets - the heat fan i includes a "fan frame u," and a diffuser plate 14 of the first embodiment of the present invention. In this embodiment, the cymbal group 12, the fan wheel 13 and the electric switch ^W ^ U are mainly applied to the inside of the axial ring frame 11, and the circuit board 14 is electrically connected to the coil group 12:::= The coil assembly 12 drives the fan wheel 13 to rotate. The fan frame 11 has a side wall portion (1), and the side wall portion m is provided with a second and an air outlet 113. Further, the side wall portion m has a base inside. The base 114 is provided with a shaft connecting portion 115, and the shaft connecting portion 115 is detachably coupled to the base 114 to be assembled on the base U4. In the embodiment, the base m is by several The connecting members 116 are connected to the side wall portions m. The connecting members 116 can be designed as vanes or ribs to form a "fan frame of an axial flow cooling fan". The coil assembly 12 is coupled to the inside of the fan frame U. The coil group U can be directly coupled to the outer peripheral surface of the hybrid portion 115, or the coil assembly 12 can be directly coupled to the base 114 or other appropriate portion of the frame n. The fan wheel 13 includes a hub 131, a plurality of blades 132, and a permanent magnet 133. The hub 131 is rotatably coupled to the shaft portion, and the hub 131 has a bottom end 131a facing the base m, and the bottom=131a has a gap (D) with the base 114; The blade-132 201132856 is disposed on the outer peripheral surface of the hub 131, wherein as shown in FIGS. 6 and 7, each of the blades 132 has a radial rotation range (foot), and each of the blades 132 has a facing toward the base 114. An end edge 132a, in the axial direction of the fan wheel 13, a valley space 134 is formed between the end edge 132a of each blade 132 and the base 114. The permanent magnet 133 is coupled to the inner side of the wheel, and the permanent There is an air gap between the magnet 133 and the coil assembly 12. The circuit board 14 is coupled to the base 114 of the frame n, and the circuit board 14 is electrically connected to the coil assembly 12. Moreover, the circuit board 14 is provided with a plurality of electronic components mi for driving the coil assembly 12 (integrated into a single electronic component as required), and each of the electronic components 141 is disposed in the accommodating space 134 and located in each of the blades 132. In the radial rotation range (R), the electronic component 141 is located outside the gap (D) formed between the bottom end i3la and the pedestal 114 to reduce the overall axial direction of the cooling fan 1 of the present invention. height. Further, in the axial direction of the fan wheel 13, the distance from the bottom h 131a of the wheel valley 131 to the base 114 is smaller than the distance from the end edge 132a of each blade 132 to the base 114; Thereby, a height difference is formed between the end edge 132a and the bottom end 131a, so that the accommodating space 134 is formed by using the height difference. The main feature of the heat dissipating fan 1 of the first embodiment of the present invention is that the electronic components 141 of the circuit board 14 are located at the leeward side of each of the blades 132 of the fan wheel 13, so that when the fan wheel 13 is rotated, In the process, the airflow driven by the fan wheel 13 can directly provide the best heat dissipation of each of the electronic components M1. In addition, the heat dissipating fan 1 of the present invention further moves the electronic components 141 of the circuit board 14 to the radial rotation 201132856 la (8)' of each of the blades 132, and each of the electronic components 141 is disposed in the accommodating space 134. So that the gap jD formed between the bottom end 13丨3 and the pedestal 114 does not accommodate any electrons (4), so that the bottom end i3ia of the wheel reel 131 of the fan wheel 13 can be closer to the circuit. The plate μ is effective to reduce the overall axial height of the cooling fan 1. More importantly, since the electronic components 141 of the circuit board 14 are located within the radial rotation range (foot) of the blades 132 of the four fan wheels 13, the heat dissipation fan 1 of the present invention does not need to reduce the overall axial height. While the electronic component 141 is disposed outside the radial rotation range of the fan wheel 13, the fan frame u of the present invention does not need to increase the width or design other structural designs that can accommodate the circuit board 14 (as shown in Figures 3 and 4). In general, the cooling fan 1 of the present invention can provide an effective reduction of the axial height and the knot without increasing the overall width of the framing frame 11 or increasing the structural complexity. A more streamlined cooling fan 1. Referring to Figures 8, 9 and 1 , the cooling fan 2 of the second embodiment of the present invention comprises a frame 21, a coil set 22, a fan wheel 23 and a circuit board 24. The fan frame 21 disclosed in this embodiment is mainly applied to a "blow-type cooling fan" and is applicable to a heat-dissipating fan without a sensor motor; the coil group 22 is combined with a 5-inch fan frame 21, and the fan wheel 23 is rotatable. The circuit board 24 is electrically connected to the coil assembly 22 for driving the fan wheel 23 to rotate through the coil assembly 22. The fan frame 21 has a side wall portion 211. The side wall portion 211 is provided with an air inlet 212 and an air outlet 213. The air inlet 212 is preferably provided with a cover plate 216, and the cover plate 216 is provided with the connection. a hole 216a of the tuyere 212, the air outlet 213 is located at the side of the fan frame 21; further, the base of the 201132856 side wall portion 211 is provided with a base 214, the base 214 is provided with a shaft joint 215; In the embodiment, the outer peripheral edge of the base 214 is connected to the side wall portion 211 so that the side wall portion 211 can surround the base portion 214 to form a "fan frame of a blower type cooling fan". The coil group 22 is coupled to the inner side of the fan frame 21. The coil assembly 22 can be directly coupled to the outer circumferential surface of the shaft portion 215, or the coil assembly 22 can be directly coupled to the base 214 of the fan frame 21 or other suitable portion. The fan wheel 23 includes a hub 231, a plurality of blades 232, and a permanent magnet 233. The hub 231 is rotatably coupled to the shaft portion 215, and the hub 231 has a bottom end 231a facing the base 214. The bottom end 231a has a gap between the bottom end 231a and the base 214. 232 is disposed on the outer circumferential surface of the hub 231, wherein as shown in FIGS. 9 and 1 , each of the blades 232 has a range of rotational directions (r), and each of the blades 232 has one end facing the base 214. a rim 232a, in the axial direction of the fan wheel 23, an accommodating space 234 is formed between the end edge 232a of the blade 232 and the base 214; the permanent magnet 233 is coupled to the inner side of the hub 231, and the permanent There is an air gap between the magnet 233 and the coil group 22. The circuit board 24 is coupled to the base 214 of the fan frame 21, and the circuit board 24 is electrically connected to the coil assembly 22. Moreover, the circuit board 24 is provided with a plurality of electronic components 241 for driving the coil assembly 22 (integrated into a single electronic component as required), and each of the electronic components 241 is disposed in the accommodating space 234 and located in each of the blades 232. Within the radial rotation range, each of the electronic components 241 is located outside the gap (D). More specifically, in the axial direction of the fan wheel 23, each of the 12-201132856 blades 232 of the fan wheel 23 is connected to one end of the hub 231 to a height smaller than the one of the blades 232 away from one end of the hub 231. The height of the blade 232 is adjacent to one end of the hub 231 and has an accommodating space 234 sufficient to accommodate each of the electronic components 241, and a side of the wheel 231 is away from the end of the valley 231 to have a larger driving area 'for the fan wheel 23 After the airflow is introduced from above through the air inlet 212, the airflow can be pushed out laterally to the air outlet 213 by the blades 232 more effectively. For example, each of the blades 232 of the embodiment is formed on the end edge 232a of one end of the hub 231 to form a groove, and the groove serves as the accommodating space 234, whereby the fan wheel 23 is rotated. In this case, it can be ensured that the blades 232 of the fan wheel 23 are less likely to touch the electronic components 24; .. <· ' ·; ι, ίί *- · The cooling fan 2 of the second embodiment of the present invention and the foregoing The heat dissipation fan 1 of the first embodiment can use the fan wheel 23 to provide the heat dissipation effect of the electronic component 241, and the heat dissipation fan 2 can be effectively reduced without increasing the overall width of the fan frame 21. The overall axial height. More importantly, based on the direction of the flow of the fan wheel 23 of the general "fan frame of the blast fan" (the airflow is introduced from above and the airflow is pushed out laterally), therefore, each of the pieces 232 is connected to one end of the hub 231. When the axial height is less than the axial height away from the one end of the wheel 231, each of the blades 232 has a larger driving area away from the end of the wheel hub 231, so as to facilitate the heat dissipation of the fan wheel 23, and Moreover, the electronic component 241 can be conveniently located in the accommodating space 234 formed by connecting one end of the blade 232 to one end of the hub 231, and is also convenient in assembly and use; therefore, the main technical features of the present invention are more suitable for use in "Blowing type cooling fan". Referring to Figures 11, 12 and 13, the third embodiment of the present invention, the horse- 13 - 201132856 up to the rotating member, comprises a --three-wire-32_ circuit board 34. The fan frame 31 and the coil group 32^ of the present embodiment are the same as the fan frame 21 and the group 22, and the fan wheel 33 of the third embodiment of the present invention and the fan wheel rim of the second embodiment. The difference is that the fan wheel 33 includes a number of wheels 331, a plurality of blade cuts, and a permanent magnet 333. The rotator 331 is also coupled to the sash frame 3 _ 315; each of the lobes 332 is coupled to the 331 by the connecting portion 33s, in the axial direction of the fan wheel 33> An accommodating space 334 is formed between the connecting portion 335 and the pedestal 314. The singular permanent magnet 333 is coupled to the inner side of the hub 331, and the permanent magnet 333 and the coil assembly 32 are ventilated. Gap. In more detail, in the embodiment, the connecting portion 335 includes a plurality of ribs 335a and a ring 335b. One end of each of the ribs 335a is connected to the outer circumferential surface of the hub 331, and the other end is connected to the ring 335b to make the ring. 335b can surround each of the ribs 335a and the hub 331; further, each of the blades 332 is coupled to the ring 335b, and each of the blades 332 has a first lug 332a and a second end 332b'. 332a is adjacent to the hub 331, the second end 332b is away from the hub; 331, wherein, as shown in FIG. 13, a radial rotation range is provided between the second end 332b of each of the blades 332 and the outer peripheral surface of the hub 331 ( R). - The circuit board 34 is coupled to the base 314 of the fan frame 31, and the circuit board 34 is electrically connected to the coil assembly 32. Moreover, the circuit board 34 is provided with a plurality of electronic components 341 for driving the coil assembly 32 (integrated into a single electronic component as required). Each of the electronic components 341 is disposed in the housing 201132856. Within the warp direction of rotation (R) of 332; - in the axial direction of the fan wheel 33, each of the electronic components 341 is preferably opposed to the connecting portion 335. Compared with the heat dissipating fans 1 and 2 of the first and second embodiments, the heat dissipating fan 3 of the third embodiment of the present invention can also provide a better heat dissipating effect of the stomach electronic components 341. The overall axial height of the heat dissipation fan 3 can be effectively reduced without increasing the overall width of the fan frame 31. It is known that the cooling fans 1, 2, and 3 of the present invention can effectively reduce the overall axial height of the fan 1, 2, and 3 without increasing the overall width of the fan frames 11, 21, and 31. And has a heat dissipation effect and knot
構簡單等諸多優點，相當適合朝向更輕薄短小的方向研發 設計。 X 雖然本發明已利用上述較佳實施例揭示，然其並非 用以限定本發明，任何熟習此技藝者在不脫離本發明之精 神和範圍之内，相對上述實施例進行各種更動與修改仍屬 ® 本發明所保護之技術範疇，因此本發明之保護範圍當視後 附之申請專利範圍所界定者為準。 15 — 201132856 【圖式簡單說明】 第1圖：第-種習知散熱風處之組合剖視圖。 第2圖：第二種習知散熱風扇之組合剖視圖。 第3圖：第三種習知散熱風扇之組合剖視圖。 第4圖：第四種習知散熱風扇之組合剖視圖。 第5圖：本發明第一實施例散熱風扇之立體分解圖。 第6圖：本發明第一實施例散熱風扇之俯視圖。 第7圖：本發明第一實施例散熱風扇之組合剖視圖。 第8圖：本發明第二實施例散熱風扇之立體分解圖。 第9圖：本發明第二實施例散熱風扇之俯視圖。 第10圖：本發明第二實施例散熱風扇之組合剖視圖。 第11圖：本發明第三實施例散熱風扇之立體分解圖。 第12圖：本發明第三實施例散熱風扇之俯視圖。 第13圖：本發明第三實施例散熱風扇之組合剖視圖。 【主要元件符號說明】 〔本發明〕 1 散熱風扇 11 扇框 111 側牆部 112入風口 113 出風口 114基座 115 轴接部 116連接件 12 線圈組 —16 _ 201132856The simple structure and many other advantages make it suitable for research and development in a lighter, thinner and shorter direction. Although the present invention has been disclosed by the above-described preferred embodiments, it is not intended to limit the invention, and various modifications and changes to the above embodiments are possible without departing from the spirit and scope of the invention. The technical scope of the invention is protected by the scope of the invention, and the scope of the invention is defined by the scope of the appended claims. 15 — 201132856 [Simple description of the diagram] Figure 1: A cross-sectional view of the combination of the first known heat dissipation. Figure 2: A cross-sectional view of a combination of a second conventional cooling fan. Figure 3: A cross-sectional view of a combination of a third conventional cooling fan. Figure 4: A cross-sectional view of a combination of a fourth conventional cooling fan. Fig. 5 is an exploded perspective view showing the heat radiating fan of the first embodiment of the present invention. Fig. 6 is a plan view showing a heat radiating fan of a first embodiment of the present invention. Fig. 7 is a sectional view showing the combination of the heat radiating fan of the first embodiment of the present invention. Fig. 8 is an exploded perspective view showing the heat dissipating fan of the second embodiment of the present invention. Figure 9 is a plan view of a cooling fan of a second embodiment of the present invention. Fig. 10 is a sectional view showing the combination of the heat radiating fan of the second embodiment of the present invention. Figure 11 is a perspective exploded view of a heat dissipation fan of a third embodiment of the present invention. Fig. 12 is a plan view showing a heat radiating fan of a third embodiment of the present invention. Figure 13 is a sectional view showing the combination of the heat radiating fan of the third embodiment of the present invention. [Main component symbol description] [Invention] 1 Cooling fan 11 Fan frame 111 Side wall portion 112 Air inlet 113 Air outlet 114 Base 115 Shaft connection 116 Connector 12 Coil set —16 _ 201132856
13 扇輪 131 輪轂 131 a底端 132 葉片 132a端緣 133 永久磁鐵 134 容置空間 14 電路板 141 電子元件 2 散熱風扇 21 扇框 211 側牆部 212 入風口 213 出風口 214 基座 215 軸接部 216 蓋板 216a穿孔 22 線圈組 23 扇輪 231 輪穀 231a底端 232 葉片 232a端緣 233 永久磁鐵 234 容置空間 24 電路板 241 電子元件 3 散熱風扇 31 扇框 311 側牆部 312 入風口 313 出風口 314 基座 315 軸接部 316 蓋板 316a穿孔 17 — 201132856 32 線圈組 33 扇輪 331 輪穀 332 葉片 332a第一端 332b第二端 333 永久磁鐵 334 容置空間 335 連接部 335a肋條 335b環圈 34 電路板 341 電子元件 〔習知〕 6 散熱風扇 61 扇框 611 基座 612 轴管 62 定子 63 轉子 631 輪穀 632 葉片 633 永久磁鐵 64 電路板 641 電子元件 7 散熱風扇 71 殼體 711 基座 72 扇輪 721 輪轂 722 葉片 73 電路板 731 發熱電子元件 732 未發熱電子元件 8 散熱風扇 81 底座 82 扇輪 83 電路板 831 感應元件 —18 — 201132856 832 控制件 833 9 散熱風扇 91 框體 911 92 扇輪 9313 Fan wheel 131 Hub 131 a Bottom end 132 Blade 132a End edge 133 Permanent magnet 134 Housing space 14 Circuit board 141 Electronic component 2 Cooling fan 21 Fan frame 211 Side wall portion 212 Air inlet 213 Air outlet 214 Base 215 Shaft connection 216 cover plate 216a perforation 22 coil set 23 fan wheel 231 trough 231a bottom end 232 blade 232a end edge 233 permanent magnet 234 accommodating space 24 circuit board 241 electronic component 3 cooling fan 31 fan frame 311 side wall portion 312 air inlet 313 Tuyere 314 Base 315 Shaft 316 Cover 316a Perforation 17 — 201132856 32 Coil set 33 Fan wheel 331 Valley 332 Blade 332a First end 332b Second end 333 Permanent magnet 334 Housing space 335 Connection 335a Rib 335b Ring 34 Circuit board 341 Electronic components [General] 6 Cooling fan 61 Fan frame 611 Base 612 Shaft tube 62 Stator 63 Rotor 631 Valley 632 Blade 633 Permanent magnet 64 Circuit board 641 Electronic components 7 Cooling fan 71 Housing 711 Base 72 Fan wheel 721 hub 722 blade 73 circuit board 731 heating electronics 8 the heat generating member 732 not cooling fan 81 of the base 82 of electronic components 83 of the circuit board 831 round inductive element -18--8339 cooling fan casing 91 201 132 856 832 911 92 control wheel 93
沉孑L 承載部 驅動電路板Sinking L carrier part driving circuit board
19 —19 —