200845880、 九、發明說明： 【發明所屬之技術領域】 ^本發明侧於-觀扇馬達散熱結構，尤指―種可以在不 變更原機構設計的條件下達紐低其發熱電子元件之溫升，以 延長風扇使用壽命之散熱風扇。 【先前技術】 如第-圖、第二圖所示，習用的散熱風扇結構包含有一殼 體（1)、一扇輪（2)與一電路板（3); 殼體（1)具有一氣流通道（10)、一入風口（11)、——出 風口（12)、一基座（13)以及一定子組（14);其中氣流通道 (10)可供容置扇輪（2)，並使氣流由入風口（11)輸入且由 出風口（12)輪出，基座（13)係位於出風口（12)側，可供 承載電路板（3)與定子組（14)，並結合扇輪; 扇輪（2)具有一輪轂（21)、一轴桿（22)、數葉片（23) 以及一環形磁鐵（24)，其中軸桿（22)位於輪轂（21)之内 部中央位置，並呈可轉動的結合在基座（13)上，葉片（23) 係環設在於輪轂（21)外周面； 笔路板（3)上設有感應元件（31)與至少一發熱電子元 件（32) ’其用以控制上述定子組（14)之交變激磁，在運轉 時，該環形磁鐵（24)用以感應定子組（14)之交變激磁以推 200845880 動=輪（2)♦進而_葉片⑵）_氣人 側流動至出風口⑽侧。 八雇惟’上述電晶體之發熱電子元件（32)係半導電性之 一非王屬/時材質控制電流之閘流方自，因此在發熱電子 ^件作動其本身材質必然多少耗損部份電能並轉換成熱 此=而在構造上’該發熱電子元件（32)係位於基座⑽ :章（21)所包覆的範圍内’使得發熱電子元件（32)缺少 、的政…、機制’谷易因為温度過高而影響其作動穩定性，甚 至景多響散熱辱扇的效能與壽命。 口此本發明人冒經研發—讎熱朗，如第三圖、第四圖 所示，以麟此改善上述習賊構缺點；其係於電路板⑶ 凸伸-延伸部（3Q)至扇輪⑵輪轂⑻範，並將發200845880, IX. Description of the invention: [Technical field of the invention] The present invention is directed to a heat dissipation structure of a fan motor, in particular, a temperature rise of a heat-emitting electronic component that can be reached without changing the original mechanism design. A cooling fan that extends the life of the fan. [Prior Art] As shown in the first and second figures, the conventional cooling fan structure includes a casing (1), a fan wheel (2) and a circuit board (3); the casing (1) has an air flow. a passage (10), an air inlet (11), an air outlet (12), a base (13) and a certain subgroup (14); wherein the air flow passage (10) is adapted to accommodate the fan wheel (2), And the airflow is input from the air inlet (11) and is rotated by the air outlet (12), and the base (13) is located on the air outlet (12) side for carrying the circuit board (3) and the stator group (14), and The fan wheel (2) has a hub (21), a shaft (22), a plurality of blades (23) and a ring magnet (24), wherein the shaft (22) is located in the inner center of the hub (21) Positioned and rotatably coupled to the base (13), the blade (23) is ringed on the outer peripheral surface of the hub (21); the touch panel (3) is provided with an inductive element (31) and at least one heat generating electron The component (32) is used to control the alternating excitation of the stator assembly (14). During operation, the annular magnet (24) is used to sense the alternating excitation of the stator assembly (14) to push the 200845880 motion=wheel (2) ♦Into ⑵ blade _) _ irritating to the outlet side flow ⑽ side. The eight-employed only the above-mentioned transistor's heating electronic component (32) is one of the semi-conducting non-king/time material control current thyristor, so in the heating electrons, its own material must consume some of the electrical energy. And converted into heat = and in construction 'the heat-generating electronic component (32) is located within the range covered by the base (10): chapter (21) 'so that the heating electronic component (32) is missing, the government, mechanism' Gu Yi has a high temperature and affects its stability of operation. The inventor of this inventor has developed and researched the hot-selling, as shown in the third and fourth figures, to improve the shortcomings of the above-mentioned thieves; it is attached to the circuit board (3) protruding-extension (3Q) to the fan Wheel (2) wheel (8) van, and will send
熱電子元件（32)設置於該延伸部⑶)上，使該發熱電子元 件（32)之其中一部份或全部位於扇輪（21)葉片⑵）的下 風處’藉由葉片（23)所導引的氣流同時對發熱電子元件（32) 散熱。 本發明先$所研發之散熱風扇確實能有效降低該發熱電 子兀件（32)的溫升，避免因為高溫而影響散熱風扇之整體效 能與壽命；然而，在此同時卻也衍生發熱電子元件（32)與機 構葉片（23)相互干涉而產生靜電干擾等問題。 6 200845880 • 散熱風扇之原機構設計，其扇輪（2)輪轂（21)底緣與 笔路板（3)基座（13)之間預留有最小安全距離（η)，然而 延伸部(3G)與發熱電子元件（32)凸伸至輪轂（21)範圍外 之後，扇輪（2)之輪轂（21)底緣與發熱電子元件（32)之 _距離（h)則鴨小於最小安全距離（H)，而造成扇輪⑵ 與發熱電子το件（32)相互干.涉，若要避免干涉則必須變更該 _ 散熱風扇之原機構設計；再者，當發熱電子元件（32)之其中 -部份或全部暴露於葉片（23)下風處時，特直接曝露於葉 片（23)所導引的氣流流場當中，使得流場空氣撞擊所產生的 靜電會干擾該發熱電子元件（32)的正常運作，甚至造成功能 失效。 【發明内容】 - 有鑑於此，本發明爰提供一種風扇馬達散熱結構，其主要 # 要目的在於不變更原機構設計的條件下，達成降低發熱電子元 件温狀功效，其胁板之至少—側面結合有高導熱性金 屬，以增加電路板之散熱面積與熱傳導效能，並使電 少-部份&伸至扇輪之輪轂的範圍外，使該凸伸部份位於扇輪 葉片的下風處’以利快速驅散熱能；因此，本發明藉由高導: 性金屬之熱傳導效能即可進行電路板整體與發熱電子元件= 散熱，無須變更原機構設計’同樣可以達到良好的散熱機制。 本發明之另-目的在於魏魏電子元件受流場靜電干 200845880 擾’本發明藉由高導熱性金屬之熱傳導效能即可進行電路板整 體與發熱電子元件讀熱，使電她上之發熱駐元件無須曝 露於氣流鱗當巾，崎免受靜電干擾其正常運作功能。 【實施方式】 為了讓本發明之目的、特徵與功效更明顯易懂，以下特別 列舉二種本發明之較佳實施型態，並配合圖式詳細說明： 如第五圖所示，本發明之第一種實施型態包含有一殼體 (1 )、一扇輪（2)與一電路板（3); 再配合參看第六圖、第七圖所示，殼體（1)具有一氣流 通道（ίο)、一入風口（11)、一出風口（12)、一基座（13) 从及一定子組（14);其中氣流通道（1〇)可供容置扇輪（2)， 風口（11)與出風口（12)分別位於氣流通道（iQ)二侧， 使氣流由入風口（Π)輸入且由出風口（12)輸出；基座（a) 可依實際散熱場合需求選擇設於出風口（ i 2 )侧或入風口（ j） 侧，且其設有數肋條（13〇)、一軸管（131)以及至少一導線 缺口（133) ’其中肋條（13〇)係連接基座（13)與殼體（d 之氣流通道（10)内壁面，且其中一相對應導線缺口（133) 之肋條（130)設置有導線槽（132)，以供電路板（3)之電源 線伸出，軸管（131)可選擇以一體成型或組合方式形成於基 座（13)中央’定子組（14)與電路板（3)均固設於基座（13) 上，以產生交變激磁； 200845880 扇輪⑵具有一輪轂（21)、一軸桿（22)、數葉片（23) 以及一環形磁鐵（24)，其中軸桿（22)位於輪轂（21)之内 部中央位置，並呈可轉動的結合在軸管（131)中，葉片（23) 係環設在於輪轂（21)外周面，環形磁鐵（％)設於輪轂（21) 内壁，以感應定子組（14)之交變激磁並推動扇輪（2)旋轉， 進而驅動氣流由入風口（11)侧流至出風口（12)側； 電路板（3)可選自軟性或硬性印刷電路板，其至少一側 面設置有高導熱性金屬，如：銅、銘、錫···等，以增加電路板 (3)之散熱面積與熱傳導效能；而且電路板（3)上具有至少 一感應元件（31)與至少一發熱電子元件（32)，並凸伸有至 少-延伸部（30)至扇輪⑵之輪轂（21)範圍外，使該延 伸部（30)王位於葉片（23)下風處，藉由葉片（23)所導引 的氣流同時對電路板⑶整體以及其上所設置之感應元件（31) 及發熱電子元件（32)散熱。 另外，電路板（3)延伸部（3〇)之較佳設計係位於靠近 導線缺σ (133)處，並使該延伸部（3Q)向外徑向延伸後， 呈接近或恰位於設置有導線槽（132)之該肋條（130)上方， 一方面仍可藉由葉片（23)所驅動之氣流同時對電路板（3) 散熱，以戦影響發熱電子元件（32)之作動穩定性鋪定輸 出功率值，進而延長風扇使用壽命；另一方面當延伸部（3〇) 位於上述設置有導賴（132)之肋條（騰）上方時，將有助 200845880 於相對減少延伸部（30)與氣流接觸所產生之擾流噪音。 本發明電路板（3)之延伸部（30)凸伸至輪轂（21)範 圍外時，該輪轂（21)底緣與電路板（3)、基座（13)之間所 預留的最小安全距離（H)並不會改變，因此不會有輪轂（21) 或葉片（23)干涉的情形產生，也無須變更該風扇之原機構設 。十，可降低重新開發設計成本；而且本發明之發熱電子元件 (32)係位於基座（13)與輪轂（21)所包覆的範圍内，並利 用電路板（3)所結合之高導熱性金屬提供良好的散熱與熱傳 導效能，因此該發熱電子元件（32)無須曝露於氣流流場當中， 以避免受靜電干擾其正常運作功能。 第八圖、第九圖所示，為本發明之第二種實施型態，其中 電路板（3)的形狀可選自圓形、矩形、扇形···等任一型態， 圖中所不為圓形截去二侧之後所形成的類矩形型態，而且該電 路板（3)至>、部伤係凸伸至扇輪（2)的輪轂（Μ)範圍外， 使其至少一部份呈位於葉片（23)下風處，例如：圓形的電路 板可以整體糊肢至大於錄⑻外徑，矩形與扇形的電 路板可以至少-邊或至少—角凸伸至輪轂（21)範圍外；且該 電路板（3)同樣可選自軟性或硬性印刷電路板，並於至少一 侧面結合有高_生金屬，輯加該電路板⑶之散敎 與熱傳導效能。 … 因此’本發明可以在不變更原機構設計的條件下，達成降 200845880 低電路板（3)整體與發熱電子元件（32)之溫升目的，且降 低開發設計成本並延長風扇使用壽命，同時，該發熱電子元件 (32)無須曝露於氣流流場當中，可避免受靜電干擾其正常運 作功能。 綜上所述，本發明確實已具備以上各項優點，相較於習用 結構亦具有顯著的功效增進，而且，此特徵於_產品當中實 屬首創’符合發明專利要件，爰依法俱文提出申請。The hot electronic component (32) is disposed on the extension (3) such that a part or all of the heat-generating electronic component (32) is located at a downwind of the fan (21) blade (2)) by the blade (23) The guided airflow simultaneously dissipates heat to the heat-generating electronic component (32). The heat-dissipating fan developed by the invention can effectively reduce the temperature rise of the heat-generating electronic component (32), and avoid the overall performance and life of the heat-dissipating fan due to the high temperature; however, at the same time, the heat-generating electronic component is also derived ( 32) Problems such as electrostatic interference with the mechanism blades (23). 6 200845880 • The original mechanism design of the cooling fan, the minimum safety distance (η) is reserved between the bottom edge of the fan wheel (2) hub (21) and the base plate (13) of the pen board (3), however the extension ( 3G) After the heat-emitting electronic component (32) protrudes out of the range of the hub (21), the distance between the bottom edge of the hub (21) of the fan wheel (2) and the heat-emitting electronic component (32) is less than the minimum safety. The distance (H) causes the fan wheel (2) to interact with the heat-generating electrons (32). To avoid interference, the original mechanism design of the heat-dissipating fan must be changed; in addition, when the heat-emitting electronic component (32) When some or all of them are exposed to the downwind of the blade (23), they are directly exposed to the flow field of the airflow guided by the blade (23), so that the static electricity generated by the collision of the flow field air interferes with the heat-generating electronic component ( 32) The normal operation, even causing functional failure. SUMMARY OF THE INVENTION - In view of the above, the present invention provides a heat dissipation structure for a fan motor, the main purpose of which is to reduce the temperature effect of the heat-generating electronic component without changing the original mechanism design, at least the side of the threat plate Incorporating a high thermal conductivity metal to increase the heat dissipation area and heat transfer efficiency of the board, and to extend the portion of the fan to the outside of the hub of the fan wheel, so that the protruding portion is located in the downwind of the fan blade At the beginning, Eli quickly drives heat dissipation. Therefore, the present invention can achieve a good heat dissipation mechanism by performing high-conductivity: thermal conduction performance of the metal to perform overall heat dissipation of the circuit board and heat-emitting electronic components without changing the original mechanism design. Another object of the present invention is that the Weiwei electronic component is disturbed by the flow field electrostatic dryness 200845880. The heat conduction performance of the high thermal conductivity metal can be used to read the heat of the whole circuit board and the heat generating electronic component, so that the heat of the electric device is charged. The components do not need to be exposed to the airflow scales, and the slaves are protected from static interference with their normal functioning. [Embodiment] In order to make the objects, features and functions of the present invention more obvious and obvious, the following is a detailed description of the preferred embodiments of the present invention, and is described in detail with reference to the drawings: The first embodiment comprises a casing (1), a fan wheel (2) and a circuit board (3); and referring to the sixth and seventh figures, the casing (1) has an air flow passage. (ίο), an air inlet (11), an air outlet (12), a base (13) and a certain subgroup (14); wherein the air flow passage (1〇) is adapted to accommodate the fan wheel (2), The tuyere (11) and the air outlet (12) are respectively located on the two sides of the airflow passage (iQ), so that the airflow is input from the air inlet (Π) and output by the air outlet (12); the base (a) can be selected according to the actual heat dissipation occasion. It is disposed on the side of the air outlet (i 2 ) or the side of the air inlet (j), and is provided with a plurality of ribs (13〇), a shaft tube (131) and at least one wire gap (133), wherein the rib (13〇) is a connecting base a seat (13) and a casing (the inner wall surface of the air flow passage (10) of the d, and one of the ribs (130) corresponding to the wire notch (133) is provided with a wire guide 132), for the power line of the circuit board (3) to extend, the shaft tube (131) may be integrally formed or combined in the center of the base (13) 'the stator group (14) and the circuit board (3) Fixed on the base (13) to generate alternating excitation; 200845880 The fan wheel (2) has a hub (21), a shaft (22), a plurality of blades (23) and a ring magnet (24), wherein the shaft ( 22) located at the inner center of the hub (21) and rotatably coupled in the shaft tube (131), the blade (23) is ringed on the outer circumference of the hub (21), and the ring magnet (%) is disposed on the hub ( 21) The inner wall is excited by the alternating stator group (14) and pushes the fan wheel (2) to rotate, thereby driving the airflow from the air inlet (11) side to the air outlet (12) side; the circuit board (3) is optional Self-flexible or rigid printed circuit board, at least one side of which is provided with a high thermal conductivity metal, such as: copper, Ming, tin, etc., to increase the heat dissipation area and heat conduction performance of the circuit board (3); and the circuit board (3) Having at least one sensing element (31) and at least one heat-generating electronic component (32), and projecting at least an extension (30) Outside the hub (21) of the fan wheel (2), the extension (30) is located at the downwind of the blade (23), and the airflow guided by the blade (23) simultaneously sets the circuit board (3) as a whole and thereon. The sensing element (31) and the heat-generating electronic component (32) dissipate heat. In addition, the preferred design of the extension portion (3) of the circuit board (3) is located near the wire σ (133), and the extension (3Q) After extending radially outward, it is close to or just above the rib (130) provided with the wire groove (132), and on the other hand, the airflow driven by the blade (23) can simultaneously dissipate the circuit board (3) In order to influence the operating stability of the heating electronic component (32), the output power value is extended, thereby prolonging the service life of the fan; on the other hand, when the extension portion (3〇) is located in the above-mentioned rib (132) provided with the guide (132) Above, it will help 200845880 to reduce the turbulence noise generated by the contact of the extension (30) with the airflow. When the extension (30) of the circuit board (3) of the present invention protrudes beyond the range of the hub (21), the minimum margin between the bottom edge of the hub (21) and the circuit board (3) and the base (13) is reserved. The safety distance (H) does not change, so there is no interference from the hub (21) or the blade (23), and there is no need to change the original mechanism of the fan. 10. The redevelopment design cost can be reduced; and the heat-generating electronic component (32) of the present invention is located within the range covered by the base (13) and the hub (21), and the high thermal conductivity combined by the circuit board (3) is utilized. The metal provides good heat dissipation and heat transfer performance, so the heat-generating electronic component (32) does not need to be exposed to the airflow field to avoid interference with the normal operation function of the static electricity. 8 and 9 are a second embodiment of the present invention, wherein the shape of the circuit board (3) can be selected from any one of a circular shape, a rectangular shape, a sector shape, and the like. The rectangular shape formed after the two sides are not cut off by the circular shape, and the circuit board (3) to >, the partial injury system protrudes beyond the range of the hub (Μ) of the fan wheel (2), so that it is at least A portion is located at the downwind of the blade (23). For example, the circular circuit board can be integrally pasted to a larger diameter than the outer diameter of the recording (8), and the rectangular and fan-shaped circuit board can protrude at least-side or at least-angle to the hub ( 21) Out of range; and the circuit board (3) may also be selected from a flexible or rigid printed circuit board, and a high-metal is combined on at least one side to add the divergence and heat transfer performance of the circuit board (3). ... Therefore, the present invention can achieve the purpose of lowering the temperature rise of the 200845880 low-circuit board (3) and the heat-generating electronic component (32) without changing the original mechanism design, and reducing development and design costs and extending the service life of the fan. The heat-generating electronic component (32) does not need to be exposed to the flow field of the airflow to avoid interference with the normal operation function of the static electricity. In summary, the present invention has indeed all of the above advantages, and has significant power enhancement compared to the conventional structure. Moreover, this feature is the first in the product of the product, which meets the requirements of the invention patent, and applies for the law according to law. .
表:隹，以上所述者僅為本發日月之較佳實施型態，舉凡應用本 赉明戒明書、申請專利範圍或 ^如丄 口武所為之等效結構變化，理應 包含在本發明之專利範圍内。Table: 隹, the above is only the preferred implementation type of the date of the present issue. The equivalent structural changes that should be included in the application of this 赉明明书, the scope of application for patent or ^如丄口武所, should be included in this Within the scope of the invention patent.
11 200845880 【圖式簡單說明】 第一圖：係習用結構之平面示意圖。 第二圖：係習用結構之剖面示意圖。 第三圖：係本發明人先前所研發散熱顯之平面示意圖。 第四圖·係本發明人先麵研發散熱顯之剖面示意圖。 第五圖：係本發明第-種實施縣之立體分解圖。11 200845880 [Simple description of the diagram] The first picture: a schematic diagram of the structure of the conventional structure. Second figure: A schematic cross-sectional view of a conventional structure. The third figure is a schematic plan view of the heat dissipation display previously developed by the inventors. The fourth figure is a schematic cross-sectional view of the inventors of the present invention. Fig. 5 is a perspective exploded view of the first implementation county of the present invention.
第六圖：係本發明第一種實施型態之平面示意圖。 第七圖：係本發明第一種實施型態之剖面示意圖。 第八圖：係本發明第二種實施型態之平面示意圖。 第九圖：係本發明第二種實施型態之示意圖。 【主要元件符號說明】 (I) 殼體 (10)氣流通道 (II) 入風〇 (12) 出風口 (13) 基座 (130) 肋條 (131) 轴管 (132) 導線槽 (133) 導線缺口 (14) 定子組 (2) 扇輪 （η)最小安全距離 (21)輪轂 （h)距離 (22 )軸桿 (23) 葉片 (24) 環形磁鐵 (3) 電路板 (30) 延伸部 (31) 感應元件 (32) 發熱電子元件 12Figure 6 is a plan view showing the first embodiment of the present invention. Figure 7 is a schematic cross-sectional view showing a first embodiment of the present invention. Figure 8 is a plan view showing a second embodiment of the present invention. Figure 9 is a schematic view showing a second embodiment of the present invention. [Main component symbol description] (I) Housing (10) air flow passage (II) air inlet 〇 (12) air outlet (13) base (130) rib (131) shaft tube (132) wire guide (133) wire Notch (14) Stator group (2) Fan wheel (η) Minimum safety distance (21) Hub (h) Distance (22) Shaft (23) Blade (24) Ring magnet (3) Circuit board (30) Extension ( 31) Inductive component (32) Heated electronic component 12