101年.02月日接正替換頁 1363947 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明係關於一種散熱裝置，尤指一種為電子裝置散熱 的散熱裝置。 [先前技術] [0002] 電腦主機中經常使用散熱風扇進行散熱。目前，業界普 遍使用 PWM (Pulse Width Modulation,脈寬調變）速 度控制電路來控制風扇轉速。如圖1所示，為一種電腦主 機中風扇的轉速控制電路框圖。一速度控制電路10接收 來自電腦主機板上的風扇轉速控制單元（未示出）產生的 PWM訊號並將該PWM訊號轉換為電壓訊號Vm，該風扇的馬 達30接收該電壓訊號Vm並據此調節轉速（該電壓訊號Vm 的電壓值與該馬達30的轉速成正比關係）。 [0003]使用上述散熱系統進行散熱時，用戶無法快速直觀地瞭 解電腦主機的溫度，也無法根據自己對於溫度的判斷或 自身的喜好來對風扇進行調速，以至於風扇轉速自動調 尚時，用戶不得不忍受高轉速帶來的噪音。另外，若pWM 速度控制電路出現異常而不能正常控制風扇轉速時，用 戶也很難找到應對措施。 【發明内容】 [_]鐾於以上内容，有必要提供__種利用散減扇為電子裝 置散熱的散熱裝置，使用戶可以快速直觀地瞭解電子裝 置的溫度，並可自主調解風扇轉速。 [0005] 一種散熱裝置，包括一電子裝置殼體 '一裝設於該殼體 的風扇及—用於控制該風扇轉速的PWM速度控制電路，該 1013069274-0 097122091^^^^ A〇101 第 4 頁 / 共 13 頁 1363947 * .» [ϊ^?.〇2月23日慘正替換頁 風扇包括一馬達，該馬達轉速與其輪入電壓成正比，該 PWM速度控制電路接收一 PffM訊號並輸出一電壓訊號該 散熱裝置還包括一變壓器，該變壓器與一直流電源電性 連接並輸出一電壓訊號，該變壓器包括一用於調節其輸 出的電壓訊號的電壓值的調壓裝置，該馬達包括一選擇 開關，該電子裝置殼體包括一調速鈕，該調速鈕分別與 該馬達的選擇開關及該變壓器的調壓裝置相連，操作該 調速鈕，該選擇開關使該馬達選擇性地電性連接於該pwM 速度控制電路的輸出端或該變壓器的輸出端，當該馬達 電性連接於該變壓器時，該調速紐可被旋動以驅動該調 壓裝置調節該變壓器的輸出電壓，該電子裝置殼體至少 部分地附著或成型有感溫變色材料。 [0006]利用本發明散熱裝置為電子裝置散熱，用戶即可根據自 己的喜好、個人需求或者根據感溫變色材料的溫度指示 來選擇由PWM速度控制電路自動控制風扇轉速或是透過調 速紐來手動控制風扇轉速。 【實施方式】 [〇〇〇7]请參考圖2及圖3，本發明散熱裝置的較佳實施方式包括 一電腦機箱、一PWM速度控制電路1〇、一手動速度控制電 路以及一風扇。 ]°玄電腦機箱包括一面板50，面板5〇上設有一調速紐40。 調速鈕40裝設於面板5〇上的一與調速鈕4〇匹配的圓形凹 槽（圖未示）内。按壓調迷鈕40 ,可使得調速鈕40彈起 或壓回至該凹槽内，且當調迷鈕40彈起時，其可被旋動 經 調速鈕40是由塑膠原料與感溫變色材料相混合後 09712209卢·單編號 A0101 第5頁/共13頁 1013069274-0 1363947 [ιοί年〇2用2b日梭正替換頁 射出成型而製成的，或者調速紐4〇是由—本體塗附感溫 變色材料層而得。於是’調速關可以隨著電腦主機的 溫度變化而變色，實現溫度指示的作用。實際上由於 受到調速⑽與電腦主機的熱源之間的相對位置關係以 及電腦機箱内的各部件的佈局的影響，調速紐4〇對於溫 度的指示可能會出現失真，因此在定義調速鈕4〇的顏色 所對應的溫度時，需將該失真部分補差。另外，為使調 速鈕40更均勻的變色，調速鈕40可選用導熱性能較佳之 材料製作》 _9] PWM速度控制電路1〇接收PWM訊號，然後將該pwM訊號轉 換為電壓訊號Vm並輸出。 - [0010]该手動速度控制電路包括一直流電源V c c以及一與該直流 電源Vcc相連的變壓器2〇。變壓器20輸出一電壓訊號\^ 。變壓器20内設有一調壓裝置（圖未示），可調節變壓 器20的輸出電壓。該調壓裝置與調速钮相連，於是旋 動調速紐40即可驅動該調壓裝置調節變壓器2〇的輸出電 壓。 [0011]該風扇包括一驅動風扇轉動的馬達30。該馬達包括一選 擇開關301，選擇開關3〇1與調速鈕40相連。調速鈕40彈 起’使得選擇開關301與該手動速度控制電路的輸出端相 接’則馬達30接收該手動速度控制電路輸出的電壓訊號 Vx ’此時’該馬達30的轉速與電壓訊號Vx的電壓值成正 比關係；調速鈕4〇被壓回，使得選擇開關301與PWM速度 控制電路10的輸出端相接，則馬達30接收PWM速度控制電 路10輸出的電壓訊號Vm，此時，該馬達30的轉速與電壓 097122091^^^^ A〇101 第 6 頁 / 共 13 頁 1013069274-0 1363947 __ ' 101年.02月2·3日核正替換頁 訊號Vm的電壓值成正比關係。 [0012] 使用時，調速鈕4〇通常處於壓回狀態，則本發明散熱裝 置透過其PWM速度控制電路1()來控制該馬達3〇的轉速，該 風扇處於自動調速狀態。當用戶按壓調速鈕4〇使其處於 彈起狀態時，本發明散熱裝置切換至手動調速狀態，馬 達30的轉速由該手動速度控制電路控制，於是，用戶可 旋動調速鈕40來控制風扇的馬達3〇的轉速。這裡，可在 面板50上設置一轉速指示裝置6〇，以告知用戶調速钮4〇 旋過的角度與風扇轉速的對應和係，在本實施方式中風 扇轉速可設定在1200轉/分至2400轉/分之間。這樣，用 • 戶即可根據自己的喜好、個人需求或者根據調速鈕40的 溫度指示來選擇自動控制或是手動控制風扇轉速。 [0013] 該感溫變色材料可選用一種感溫變色微膠囊粉，其粒徑 為1 -1 0微米。該感溫變色材料由低溫上升至或超過政定 溫度，使得感溫變色材料由原來設定顏色，漸漸消失改 變成透明無色，達到變色效果。 [0014] 在本實施方式中，調速鈕40的材料成分可以以33攝氏度 藍色變色材料加上紅色塑膠原料製成，則其顏色隨溫度 變化的情況為：當溫度低於29攝氏度時，調速鈕40呈現 藍色；當溫度上升至並超過29攝氏度時，調速鈕40中的 感溫變色材料的藍色逐漸褪去；當溫度上升至33攝氏度 時，該感溫材料的藍色完全消失，調速鈕40呈現該塑膠 材料的紅色。由此，用戶可由調速鈕40於藍色與紅色之 間的過渡變化來判斷電腦主機的溫度。另外’為強化調 速鈕40的溫度指示效果，可將面板50製作為藍色，這樣 097画产單编號删1 第7頁/共13頁 1013069274-0 1363947101.02. The date of replacement is 1363947. 6. Description of the Invention: [Technical Field] The present invention relates to a heat dissipating device, and more particularly to a heat dissipating device for dissipating heat from an electronic device. [Prior Art] [0002] A cooling fan is often used in a computer mainframe for heat dissipation. Currently, the industry generally uses PWM (Pulse Width Modulation) speed control circuitry to control fan speed. As shown in Figure 1, it is a block diagram of the speed control circuit of a fan in a computer host. A speed control circuit 10 receives a PWM signal generated by a fan speed control unit (not shown) on the computer motherboard and converts the PWM signal into a voltage signal Vm, and the motor 30 of the fan receives the voltage signal Vm and adjusts accordingly The rotational speed (the voltage value of the voltage signal Vm is proportional to the rotational speed of the motor 30). [0003] When using the above heat dissipation system for heat dissipation, the user cannot quickly and intuitively understand the temperature of the host computer, and cannot adjust the speed of the fan according to his own judgment on the temperature or his own preference, so that when the fan speed is automatically adjusted, Users have to endure the noise caused by high speed. In addition, if the pWM speed control circuit is abnormal and the fan speed cannot be controlled normally, it is difficult for the user to find a countermeasure. SUMMARY OF THE INVENTION [_] In view of the above, it is necessary to provide a heat dissipating device that uses a diffusing fan to dissipate heat for an electronic device, so that the user can quickly and intuitively understand the temperature of the electronic device, and can independently adjust the fan speed. [0005] A heat dissipating device includes an electronic device housing 'a fan mounted to the housing and a PWM speed control circuit for controlling the speed of the fan, the 1013069274-0 097122091^^^^ A〇101 4 pages / Total 13 pages 1363947 * .» [ϊ^?.〇 February 23 Misplaced replacement page fan includes a motor, the motor speed is proportional to its wheeling voltage, the PWM speed control circuit receives a PffM signal and outputs a voltage signal, the heat sink further includes a transformer electrically connected to the DC power source and outputting a voltage signal, the transformer including a voltage regulating device for adjusting a voltage value of the output voltage signal thereof, the motor including a Selecting a switch, the electronic device housing includes a speed control button respectively connected to the selection switch of the motor and the voltage regulating device of the transformer, and the speed control button is operated, the selection switch makes the motor selectively electrified Connected to the output of the pwM speed control circuit or the output of the transformer, when the motor is electrically connected to the transformer, the speed control button can be rotated to drive the voltage regulating device to adjust Output voltage of the transformer, the electronic device housing at least partially attached or molded encapsulating a thermochromic material. [0006] The heat dissipation device of the present invention dissipates heat for the electronic device, and the user can select the automatic control of the fan speed by the PWM speed control circuit according to his own preference, personal needs or according to the temperature indication of the thermochromic material. Manually control the fan speed. [Embodiment] [7] Referring to Figures 2 and 3, a preferred embodiment of the heat sink of the present invention includes a computer case, a PWM speed control circuit, a manual speed control circuit, and a fan. ] ° Xuan computer chassis includes a panel 50, and a panel 4 is provided with a speed adjustment button 40. The speed control button 40 is mounted on a circular recess (not shown) of the panel 5A that matches the speed control button 4''. Pressing the button 40 can cause the speed button 40 to bounce or press back into the groove, and when the button 40 is bounced, it can be rotated. The speed button 40 is made of plastic material and temperature. After the color-changing material is mixed, 97,712,209 lux, the single number A0101, the fifth page, the total 13 pages, 1013069274-0, 1363947 [Im ί 〇 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 The body is coated with a layer of thermochromic material. Therefore, the speed regulation can be discolored according to the temperature change of the host computer to realize the role of temperature indication. In fact, due to the relative positional relationship between the speed regulation (10) and the heat source of the computer mainframe and the layout of the various components in the computer case, the speed adjustment indication may be distorted for the temperature indication, so the speed control button is defined. When the temperature corresponding to the color of 4〇 is used, the distortion portion needs to be complemented. In addition, in order to make the speed control button 40 more uniform color change, the speed control button 40 can be made of a material with better thermal conductivity. _9] The PWM speed control circuit 1 receives the PWM signal, and then converts the pwM signal into a voltage signal Vm and outputs . [0010] The manual speed control circuit includes a DC power source V c c and a transformer 2 相连 connected to the DC power source Vcc. Transformer 20 outputs a voltage signal \^. A voltage regulating device (not shown) is provided in the transformer 20 to adjust the output voltage of the transformer 20. The pressure regulating device is connected to the speed control knob, so that the speed adjusting button 40 can be driven to drive the voltage regulating device to adjust the output voltage of the transformer 2〇. The fan includes a motor 30 that drives the fan to rotate. The motor includes a selector switch 301, and the selector switch 3〇1 is coupled to the throttle button 40. The speed controller 40 pops up 'so that the selection switch 301 is connected to the output end of the manual speed control circuit', then the motor 30 receives the voltage signal Vx 'output' of the manual speed control circuit and the voltage signal Vx of the motor 30 The voltage value is proportional to the relationship; the speed control button 4 is pressed back, so that the selection switch 301 is connected to the output end of the PWM speed control circuit 10, and the motor 30 receives the voltage signal Vm output by the PWM speed control circuit 10, at this time, The speed and voltage of the motor 30 are 097122091^^^^ A〇101 Page 6 / Total 13 pages 1013069274-0 1363947 __ ' 101 years. February 2, 3rd, the positive replacement page signal Vm voltage value is proportional. [0012] When used, the speed control knob 4 is normally in a back-return state, and the heat dissipation device of the present invention controls the rotation speed of the motor 3〇 through its PWM speed control circuit 1(), and the fan is in an automatic speed regulation state. When the user presses the speed control knob 4 to make it in the pop-up state, the heat dissipation device of the present invention switches to the manual speed regulation state, and the rotation speed of the motor 30 is controlled by the manual speed control circuit, so that the user can rotate the speed control knob 40. The speed of the motor 3〇 of the fan is controlled. Here, a speed indicating device 6〇 can be disposed on the panel 50 to inform the user of the corresponding relationship between the angle of the speed knob 4 and the fan speed. In the embodiment, the fan speed can be set to 1200 rpm. Between 2400 rpm. In this way, the user can select the automatic control or manually control the fan speed according to his or her preference, personal needs or according to the temperature indication of the throttle button 40. [0013] The thermochromic material may be selected from a thermochromic microcapsule powder having a particle diameter of 1 to 10 μm. The thermochromic material rises from a low temperature to a temperature exceeding a predetermined temperature, so that the thermochromic material is gradually changed from the original color to the transparent colorless color to achieve a color change effect. [0014] In the present embodiment, the material composition of the speed control knob 40 can be made of a blue color changing material of 33 degrees Celsius plus a red plastic material, and the color changes with temperature: when the temperature is lower than 29 degrees Celsius, The speed control button 40 is blue; when the temperature rises to and exceeds 29 degrees Celsius, the blue color of the thermochromic material in the speed control button 40 gradually fades; when the temperature rises to 33 degrees Celsius, the blue color of the temperature sensing material is completely When it disappears, the speed knob 40 presents the red color of the plastic material. Thus, the user can judge the temperature of the host computer by the transition of the speed controller 40 between blue and red. In addition, in order to enhance the temperature indicating effect of the speed adjusting button 40, the panel 50 can be made blue, so that the 097 drawing number is deleted 1 page 7 / 13 pages 1013069274-0 1363947
1101^02^ 23B 當調速紐40變色時，調速鈕40與面板50的顏色對比更為 鮮明，如此便更利於警醒用戶。 [0015] 在其他貫施方式中，亦可將該感溫變色材料置於該電腦 機箱的面板5〇或其他較為顯眼的部位，而不僅限於使用 在調速紐40上°而調速按鈕40也不僅限於設置在面板50 上。 [0016] 另外’本發明散熱裝置還可用於其他需要對殼體内部散 熱的電子裝置，如筆記型電腦、塔式伺服器等。 [0017] 综上所述’本發明符合發明專利要件，爰依法提出專利 申請。惟’以上所述者僅為本發明之較佳實施方式，舉 凡熟悉本案技藝之人士，在爰依本發明精神所作之等效 修飾或變化，皆應涵蓋於以下之申請專利範圍内。 【圖式簡單說明】 [0018] 圖1係習知技術中的風扇轉速控制電路框圖。 [0019] 圖2係本發明散熱裝置較佳實施方式之電腦機箱面板的主 視圖。 [0020] 圖3係本發明散熱裝置較佳實施方式之風扇轉速控制電路 框圖。 【主要元件符號說明】 [0〇21] PWM速度控制電路：10 [0022]變壓器：2 0 ^23]馬達：30 t〇024]選擇開關：301 1013069274-0 09712209#單編號A〇l〇l 第8頁/共13頁 1363947 ·» . 101年.02月左日修正替換頁 [0025] 調速鈕：40 [0026] 面板：50 [0027] 轉速指示裝置：60 ' 09712209产單編I A0101 第9頁/共13頁 1013069274-01101^02^ 23B When the speed adjustment button 40 is discolored, the color contrast between the speed control button 40 and the panel 50 is more vivid, which is more conducive to alerting the user. [0015] In other embodiments, the thermochromic material may be placed on the panel 5 of the computer case or other more conspicuous parts, and is not limited to being used on the speed adjustment button 40. It is not limited to being disposed on the panel 50. [0016] Further, the heat sink of the present invention can be applied to other electronic devices that require heat dissipation inside the casing, such as a notebook computer, a tower server, and the like. [0017] In summary, the invention conforms to the patent requirements of the invention, and the patent application is filed according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims. BRIEF DESCRIPTION OF THE DRAWINGS [0018] FIG. 1 is a block diagram of a fan speed control circuit in a prior art. 2 is a front view of a computer case panel of a preferred embodiment of the heat sink of the present invention. 3 is a block diagram of a fan speed control circuit of a preferred embodiment of the heat sink of the present invention. [Main component symbol description] [0〇21] PWM speed control circuit: 10 [0022] Transformer: 2 0 ^23] Motor: 30 t〇024] Selector switch: 301 1013069274-0 09712209# Single number A〇l〇l Page 8 of 13 Page 1363947 ·» . 101.02 month left day correction replacement page [0025] Speed control button: 40 [0026] Panel: 50 [0027] Speed indicator device: 60 ' 09712209Product list I A0101 Page 9 of 13 Page 1013069274-0