201245942 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種散熱裝置，特別是一種用於（全文替換） 對電子產品散熱的散熱裝置。 【先前技術"】 [0002] 隨著集成電路元件的處理速度越來越快及響應頻率越來 越高，其產生的熱量也越來越多，而過高的溫度會嚴重 影響集成電路的正常運作，甚至損壞其中的電子元件， 因此需要用散熱裝置來冷卻集成電路。傳統的散熱裝置 通常包括複數（全文替換）片散熱鰭片。散熱鰭片把電子 元件所產生的熱量通過鰭片之間形成的氣流通道散發出 去。如圖1所示，傳統的散熱鰭片組由復數呈單片平面狀 的鰭片相互連接形成。然而，由於鰭片的面積較小，會 導致鰭片組的散熱面積較小，不利於與空氣交換熱量。 並且，每兩片散熱鰭片之間只有一條直線狀的氣流通道 ，會造成氣流與散熱鰭片進行熱交換的時間較短，散熱 裝置的熱對流係數較小，熱傳效果欠佳。 【發明内容】 [0003] [0004] [0005] 100115876 因此，有必要提供一種熱傳效果較佳的散熱裝置。 一種散熱裝置，包括復數散熱鰭片，每一散熱鰭片包括 一本體，各散熱鰭片的本體表面延伸出折板，該折板先 背向散熱鰭片的本體延伸再朝向本體往回彎折，各折板 抵接相鄰的散熱鰭片的本體而將各散熱鰭片組接。 該散熱裝置的散熱鰭片通過往回彎折延伸的折板，既可 以增加散熱鰭片的散熱面積，又可以起到擾流作用，延 表單編號A0101 第4頁/共20頁 1002026614-0 201245942 長氣流滯留於散熱鰭片之間的時間，使得氣流的對流係 數較大，提升熱傳效果。另外，由於折板與鰭片之間的 抵靠，使得各散熱鰭片結合得更緊密，增加散熱裝置的 穩定性。 【實施方式】 [0006] Ο [0007] Ο 4參閱圖2，示出了本發明的散熱裝置1〇的立體圖，其包 括復數散熱鰭片20。該散熱襞置還可進一步包括承載散 熱鰭片20的底板（圖未示），用於與相應的電子元件（圖未 不）接觸，以對其進行散熱。各片散熱鰭片2〇沿同一方向 相互平行抵靠形成散熱裝置1 〇 ^ 請再參閱3-4，示出散熱裝置1〇其中一片散熱鰭片2〇的放 大圖及前視圖。散熱鰭片2〇包括一本體3〇、_上折板21〇 、一下折板220。該本體3〇、上折板21〇及下折板22〇為 分離製造，然後再通過焊接或其他方式固定在—起。本 體30為一五邊形金屬板，其大致呈一切去一角的矩形。 本體30的上邊界312比下邊界313短，前邊界314比後邊 界315短。上邊界312與前邊界314通過斜邊31〇連接。斜 邊310與前邊界314形成一鈍角311。前邊界314與下邊界 313由圓角301連接。本體30在其上邊界312延伸出一上 折板210 ’在其下邊界313延伸出一下折板220。上折板 210與下折板220的後端均與本體30的後邊界315對齊， 三者在同一垂直平面上。 該上折板210自本體30頂端背離本體30延伸並朝向本體 30向下回彎。上折板210包括第一彎折部211、第二蠻折 部21 2及第三彎折部213，第一彎折部211自本體30的上 100115876 表單編號Α0101 第5頁/共20頁 1002026614-0 [0008] 201245942 邊界31 2垂直延伸而出。第一彎折部211為一矩形板，其 左側略微比上邊界31 2短，使得第一彎折部211的前端未 與斜邊310與上邊界312的接點接觸。第一彎折部2ιι的 右側向下垂直延伸出第二彎折部212。第二彎折部212為 一與本體3 0平行的矩形板。第二彎折部2〗2比第一彎折部 211短，第二彎折部212的前端與第一彎折部211的前端 錯開。第二彎折部212的下端向本體3〇垂直延伸出一與該 第二彎折部212等長的第三彎折部213。第三彎折部213 與本體30垂直，與第一彎折部211平行。該第三彎折部 213抵接本體30表面，從而與第一彎折部211、第二彎折 部212及本體30共同構成一氣流通道41。 [0009] 下折板220自本體30底端背離本體30延伸並朝向本體3〇 向上回背。下折板220包括第一彎折片221、第二彎折片 222及第三彎折片223。第一彎折片221自本體30的下邊 界31 3垂直延伸。第一彎折片221為一矩形板，其稍微比 下邊界313短，但比上邊界312長。第一彎折片221的右 側垂直向上延伸出與其長邊等長的第二彎折片222。該第 二彎折片222為一矩形板。該第二彎折片222與本體3〇平 行且與第一彎折部212在同一平面上。第二蠻折片222頂 端向本體30垂直延伸出第三彎折片223。該第三彎折片 223為一矩形板’其垂直於本體3〇。第三彎折片223抵接 本體30表面。該第一彎折片221、第二彎折片222、第三 彎折片223等長。所述三個彎折片221、222、223構成的 下折板220與本體30構成一氣流通道42。 [0010] 請再參閱圖5，示出了散熱裝置1〇的前視圖。各片散熱鰭 100115876 表單編號A0101 第6頁/共20頁 1002026614-0 201245942 片20抵靠組成散熱裝置10。每片散熱鰭片20的氣流通道 41與氣流通道42之間的空間與相鄰的散熱鰭片2〇的本體 3 〇組成氣流通道43。氣流可以分別從上述三個氣流通道 41、42、43經過散熱鰭片20流出。這樣，氣流就可以更 好地與散熱鰭片20接觸。又由于散熱鰭片20的本體30呈 一切去一角的矩形狀且上下折板210、220均比對應的上 下邊界312、313略短，使得本體3〇的前端比上下折板201245942 VI. Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to a heat dissipating device, and more particularly to a heat dissipating device for dissipating heat from an electronic product. [Previous Technology "] [0002] As integrated circuit components are processed faster and with higher response frequencies, they generate more and more heat, and too high temperatures can seriously affect integrated circuits. It works normally and even damages the electronic components therein, so it is necessary to use a heat sink to cool the integrated circuit. Conventional heat sinks typically include a plurality of (full-text replacement) fins. The heat sink fins dissipate the heat generated by the electronic components through the air flow path formed between the fins. As shown in Fig. 1, a conventional heat sink fin group is formed by interconnecting a plurality of fins having a single planar shape. However, due to the small area of the fins, the heat dissipation area of the fin group is small, which is disadvantageous for exchanging heat with the air. Moreover, there is only one linear airflow passage between each two fins, which causes a short time for heat exchange between the airflow and the fins, and the heat convection coefficient of the heat sink is small, and the heat transfer effect is poor. SUMMARY OF THE INVENTION [0003] [0005] [0005] [0005] [0005] Therefore, it is necessary to provide a heat sink having a better heat transfer effect. A heat dissipating device includes a plurality of heat dissipating fins, each of the heat dissipating fins includes a body, and a surface of each of the heat dissipating fins extends out of the folding plate, and the folding plate extends back toward the body of the heat dissipating fin and then bends back toward the main body Each of the folding plates abuts the body of the adjacent heat dissipation fins to assemble the heat dissipation fins. The heat dissipating fins of the heat dissipating device can increase the heat dissipating area of the heat dissipating fins by the folding of the fins, and can also act as a spoiler. The form number is A0101, page 4/20 pages, 1002026614-0 201245942 The long airflow stays between the fins, which makes the convection coefficient of the airflow larger and improves the heat transfer effect. In addition, due to the abutment between the flap and the fin, the fins are more tightly coupled to increase the stability of the heat sink. [Embodiment] [0007] Referring to Fig. 2, there is shown a perspective view of a heat sink 1 of the present invention, which includes a plurality of fins 20. The heat sink can further include a bottom plate (not shown) carrying the heat sink fins 20 for contacting the corresponding electronic components (not shown) to dissipate heat therefrom. Each of the fins 2 平行 is parallel to each other in the same direction to form a heat sink 1 〇 ^ Referring to 3-4, an enlarged view and a front view of one of the fins 2 散热 of the heat sink 1 are shown. The heat dissipating fins 2A include a body 3〇, an upper folding plate 21〇, and a lower folding plate 220. The body 3〇, the upper flap 21〇 and the lower flap 22〇 are separately manufactured and then fixed by welding or other means. The body 30 is a pentagonal metal plate which is generally rectangular in all corners. The upper boundary 312 of the body 30 is shorter than the lower boundary 313, and the front boundary 314 is shorter than the rear boundary 315. The upper boundary 312 and the front boundary 314 are connected by a bevel 31 〇. The beveled edge 310 forms an obtuse angle 311 with the front boundary 314. The front boundary 314 and the lower boundary 313 are connected by a rounded corner 301. The body 30 extends at its upper boundary 312 with an upper flap 210' extending at its lower boundary 313 out of the lower flap 220. Both the upper flap 210 and the rear end of the lower flap 220 are aligned with the rear boundary 315 of the body 30, all in the same vertical plane. The upper flap 210 extends away from the body 30 from the top end of the body 30 and is bent back toward the body 30. The upper folding plate 210 includes a first bending portion 211, a second bending portion 21 2 and a third bending portion 213. The first bending portion 211 is from the upper surface of the body 30. 100115876 Form No. Α0101 Page 5 / Total 20 pages 1002026614 -0 [0008] 201245942 Boundary 31 2 extends vertically. The first bent portion 211 is a rectangular plate whose left side is slightly shorter than the upper boundary 31 2 such that the front end of the first bent portion 211 is not in contact with the contact of the oblique side 310 and the upper boundary 312. The right side of the first bent portion 2 ιι extends vertically downward from the second bent portion 212. The second bent portion 212 is a rectangular plate parallel to the body 30. The second bent portion 2 is shorter than the first bent portion 211, and the front end of the second bent portion 212 is offset from the front end of the first bent portion 211. The lower end of the second bent portion 212 extends perpendicularly to the body 3A to extend a third bent portion 213 which is equal to the second bent portion 212. The third bent portion 213 is perpendicular to the body 30 and is parallel to the first bent portion 211. The third bent portion 213 abuts against the surface of the body 30 to form an air flow passage 41 together with the first bent portion 211, the second bent portion 212 and the body 30. The lower flap 220 extends away from the body 30 from the bottom end of the body 30 and faces back toward the body 3〇. The lower flap 220 includes a first bent piece 221, a second bent piece 222, and a third bent piece 223. The first bent piece 221 extends perpendicularly from the lower boundary 31 3 of the body 30. The first bent piece 221 is a rectangular plate which is slightly shorter than the lower boundary 313 but longer than the upper boundary 312. The right side of the first bent piece 221 extends vertically upwardly from the second bent piece 222 which is equal in length to the long side thereof. The second bent piece 222 is a rectangular plate. The second bent piece 222 is parallel to the body 3 且 and is in the same plane as the first bent portion 212. The top end of the second barb piece 222 extends perpendicularly from the body 30 to the third bent piece 223. The third bent piece 223 is a rectangular plate 'which is perpendicular to the body 3'. The third bent piece 223 abuts against the surface of the body 30. The first bent piece 221, the second bent piece 222, and the third bent piece 223 are equal in length. The lower flap 220 and the body 30 formed by the three bent pieces 221, 222, and 223 constitute an air flow passage 42. [0010] Referring again to FIG. 5, a front view of the heat sink 1A is shown. Heat sink fins 100115876 Form No. A0101 Page 6 of 20 1002026614-0 201245942 The sheet 20 abuts the heat sink 10. The space between the air flow passage 41 and the air flow passage 42 of each of the heat dissipation fins 20 and the body 3 of the adjacent heat dissipation fins 2〇 constitute an air flow passage 43. Airflow may flow out from the three airflow passages 41, 42, 43 through the heat dissipation fins 20, respectively. Thus, the air flow can be better contacted with the heat sink fins 20. Moreover, since the body 30 of the heat dissipation fin 20 has a rectangular shape with all corners and the upper and lower flaps 210 and 220 are slightly shorter than the corresponding upper and lower boundaries 312 and 313, the front end of the body 3〇 is more than the upper and lower flaps.
210、 220要凸出’從而使各氣流通道41、42、43在靠近 本體30的前端位置處被拓寬。當氣流自散熱鰭片20的後 端流過氣流通道41、42、43後，在接近本體30前端的位 置處發生交匯而彼此干擾形成擾流，從而更充分地與散 熱鰭片20進行換熱，使散熱裝置10的散熱效率得到提高 。並且，此種在末端突然擴寬的氣流通道41、42、43還 可進一步對氣流的引導起到過渡作用，使氣流的流通更 順暢。 [0011] ο 圖6示出了本發明的第二實施例，其與上述實施例的區別 僅在於上下折板210a、220a與本體30a的結合方式不一 樣。該第二實施例的本體3〇a與第一實施例的本體30形狀 一樣，其前邊界（圖未標）與下邊界（圖未標）通過圓 角30la連接。該第二實旅例的上下折板21〇a、220a與本 體30a為一體彎折成型，上折板2i〇a包括第一彎折部 211a、第二彎折部212a及第三彎折部213a，所述三個彎 折部211a、212a、213a與第一實施例中的第一彎折部 211、 第二彎折部212、第三彎折部213位置對應，但是 第三彎折部213a略窄而與本體3〇a之間通過間隙隔開而不 100115876 表單編號A0101 第7頁/共20頁 1002026614-0 201245942 接觸。下折板220a包括第一彎折片221a、第二彎折片 222a、第三彎折片223a，所述三個彎折片與第一實施例 中的第一彎折片221、第二彎折片222、第三彎折片223 的位置對應，但是第三彎折片223a略窄而與本體30之間 通過間隙隔開而不接觸。上折板210a與本體30a之間形成 的氣流通道41 a通過中間的氣流通道43a與下折板220a與 本體3 0 a之間形成的氣流通道4 2 a連通。 [0012] 可以理解地，第二實施例中的本體30a與折板210a、 220a —體彎折成型可以用於第一個實施例，第二實施例 中的第三彎折部213a、第三彎折片223a與本體30a之間 通過間隙隔開而不接觸也可以用於第一個實施例中。 [0013] 請再參閱圖7，示出了本發明的第三實施例。該第三實施 例的本體30b與前面兩個實施例的本體30、30a是一樣的 ，主要區別在於折板210b、220b、230b的位置及形狀不 一樣。在本實施例中，本體30b上下兩端各一體彎折出垂 直延伸的上折板210b和下折板220b。本體30中部位置焊 接或通過其他方式固定上一折板230b。該折板230b包括 第一彎折片231b，第二彎折片2 32b，第三彎折片233b。 該折板230b的第一彎折片231b背離本體30b延伸，第二 彎折片232b自第一彎折片231b向下彎折，第三彎折片 233b自第二彎折片232b朝向本體30b回彎。可以理解地 ，該折板230b還可被認為是第三彎折片233b背離本體 30b延伸，第二彎折片232b自第三彎折片233b向上彎折 ，第一彎折片231b自第二彎折片232b朝向本體30b回彎 。第一彎折片231b垂直於本體30b，第二彎折片232b平 100115876 表單編號A0101 第8頁/共20頁 1002026614-0 201245942 行於本體3〇b，第三彎折片233b垂直於第二彎折片232b ’且平行於第一彎折片231。所述三個彎折片231b、 232b、233b、上折板210b和下折板220b均為矩形板， 其中第一彎折片231b、第三彎折片233b與上折板21〇b、 下折板220b的寬度相同。該三個彎折片231b、232b、 233b與本體30b—同構成一氣流通道43b。在本實施例中 ’復數散熱鰭片20b抵靠組接後，各散熱鰭片2〇b的上折 板210b、第一彎折片231b與相鄰的另一片散熱鰭片2〇b 的本體30b形成氣流通道41b，下折板220b、第三彎折片 233b與相鄰的另一片散熱鰭片2〇b的本體30形成氣流通 道42b。由此’復數散熱鰭片20b組合後，每兩片散熱鰭 片20b之間形成三個氣流通道41b、42b、43b。同時，由 于所述兩片折板210b、220b及三片彎折片231b、232b 、233b的存在，增大了散熱鰭片2〇b的散熱面積。因此， 該上下折板210b、220b和該三片彎折片231b、232b、 233b有效提高了散熱裝置ι〇的散熱效率。 [0014]通過形成折板210、210a、210b、220、220a、220b、 230b，可增加熱量在鰭片上的傳導途徑，使其能從多個 不同的途徑進行傳導’從而提升散熱鑛片2〇 ' 2〇a、20b 的傳熱效率。折板210、2l〇a、210b、220、220a、 220b、230b還可對氣流起到擾流作用，提升散熱裝置1〇 的熱對流係數’使氣流滯留于散熱鰭片20、20a ' 20b之 間，與散熱縛片20、20a、2〇b進行熱交換的時間得到延 長。並且，由于每片散熱鰭片2〇、20a、20b均具有回彎 的折板210、210a、220、220a、230b，因此，每片散 100115876 表單編號A0101 第9頁/共2〇頁 1002026614-0 201245942 [0015] [0016] [⑻ 17] [0018] [0019] [0020] [0021] [0022] [0023] [0024] 100115876 熱鰭片20、20a、20b的散熱面積都較大，從而使得散熱 裝置10的散熱效率得到提升。而且，由于每片散熱藉片 20、20a、20b的折板210、21〇a、210b、22〇、22〇a、 220b、230b均與相鄰另一散熱鰭片2〇、2〇a2〇b相抵靠 ，因此也增加了散熱裝置1〇的穩定性，使其不容易發生 變形。 可以理解地，上述折板210、21〇a、21〇b、22〇、22〇a 、220b、23Gb還可以是其他形狀的折片，形成的氣流通 道41、41a、41b、42、42a、42b、43、43a、43b也可 以變為相應的其他形狀，例如，梯形、六邊形等等。 【圖式簡單說明】 圖1示出了傳統的散熱裝置。 圖2示出了本發明中散熱裝置的立體圖。 圖3示出了圖2中散熱裝置其中-片雜片的放大圖。 圖4示出了圖3中散熱裝置其中一片鰭片的前視圖。 圖5示出了圖2中散熱裝置的前視圖。 圖6不出了本發明第二實施例中的散熱裝置其中一片鰭片 的前視圖。 圖7不出了本發明第三實施例中的散熱裝置其中一片縛片 的前視圖。 【主要元件符號說明】 10 :散熱裝置 20、20a、20b :散熱鰭片 第10頁/共20頁 表單編號A0101 1002026614-0 201245942 [0025] [0026] [0027] [0028] [0029] [0030] [0031]210, 220 are to be projected so that the respective air flow passages 41, 42, 43 are widened near the front end position of the body 30. When the airflow flows through the airflow passages 41, 42, and 43 from the rear end of the heat dissipation fins 20, the airflows occur at a position close to the front end of the body 30 to interfere with each other to form a spoiler, thereby more fully exchanging heat with the heat dissipation fins 20. The heat dissipation efficiency of the heat sink 10 is improved. Moreover, such airflow passages 41, 42, 43 which are suddenly widened at the end can further effect the transition of the airflow to make the circulation of the airflow smoother. [0011] Figure 6 shows a second embodiment of the present invention which differs from the above-described embodiment only in that the upper and lower flaps 210a, 220a are combined with the body 30a in a different manner. The body 3〇a of the second embodiment has the same shape as the body 30 of the first embodiment, and its front boundary (not shown) and the lower boundary (not shown) are connected by a rounded corner 30la. The upper and lower flaps 21A and 220a of the second embodiment are integrally bent and formed with the body 30a. The upper flap 2i〇a includes a first bent portion 211a, a second bent portion 212a and a third bent portion. 213a, the three bent portions 211a, 212a, 213a correspond to the first bent portion 211, the second bent portion 212, and the third bent portion 213 in the first embodiment, but the third bent portion 213a is slightly narrower and is separated from the body 3〇a by a gap instead of 100115876 Form No. A0101 Page 7 / Total 20 pages 1002026614-0 201245942 Contact. The lower folding plate 220a includes a first bending piece 221a, a second bending piece 222a, and a third bending piece 223a, and the three bending pieces are the first bending piece 221 and the second bending in the first embodiment. The positions of the flap 222 and the third bent piece 223 correspond to each other, but the third bent piece 223a is slightly narrow and is not separated from the body 30 by a gap. The air flow passage 41a formed between the upper flap 210a and the body 30a communicates with the air flow passage 4 2 a formed between the lower flap 220a and the main body 30 a through the intermediate air flow passage 43a. [0012] It can be understood that the body 30a and the folding plates 210a, 220a in the second embodiment can be used for the first embodiment, and the third bending portion 213a and the third embodiment in the second embodiment. The fact that the bent piece 223a and the body 30a are separated by a gap without contact can also be used in the first embodiment. [0013] Referring again to Figure 7, a third embodiment of the present invention is illustrated. The body 30b of the third embodiment is identical to the bodies 30, 30a of the previous two embodiments, with the main difference being that the positions and shapes of the flaps 210b, 220b, 230b are different. In the present embodiment, the upper and lower ends of the body 30b are integrally bent integrally with the vertically extending upper and lower flaps 210b and 220b. The central portion of the body 30 is welded or otherwise secured to the upper flap 230b. The flap 230b includes a first bent piece 231b, a second bent piece 232b, and a third bent piece 233b. The first bent piece 231b of the folded plate 230b extends away from the body 30b, the second bent piece 232b is bent downward from the first bent piece 231b, and the third bent piece 233b is directed from the second bent piece 232b toward the body 30b. Back bend. It can be understood that the flap 230b can also be considered that the third bent piece 233b extends away from the body 30b, and the second bent piece 232b is bent upward from the third bent piece 233b, and the first bent piece 231b is from the second The bent piece 232b is bent back toward the body 30b. The first bent piece 231b is perpendicular to the body 30b, the second bent piece 232b is flat 100115876, the form number A0101, the eighth page, the total of 20 pages, 1002026614-0, 201245942, is on the body 3〇b, and the third bent piece 233b is perpendicular to the second The bent piece 232b' is parallel to the first bent piece 231. The three bending pieces 231b, 232b, 233b, the upper folding plate 210b and the lower folding plate 220b are all rectangular plates, wherein the first bending piece 231b, the third bending piece 233b and the upper folding plate 21〇b, the lower side The flaps 220b have the same width. The three bent pieces 231b, 232b, 233b and the body 30b constitute a gas flow passage 43b. In the embodiment, after the plurality of heat dissipation fins 20b are abutted, the upper folded plate 210b of each of the heat dissipation fins 2〇b, the first bent piece 231b, and the body of the adjacent other heat dissipation fin 2〇b 30b forms an air flow passage 41b, and the lower flap 220b and the third bent piece 233b form an air flow passage 42b with the body 30 of the adjacent other heat dissipation fin 2b. Thus, after the combination of the plurality of heat radiating fins 20b, three air flow passages 41b, 42b, 43b are formed between each of the two heat radiating fins 20b. At the same time, due to the presence of the two folded plates 210b, 220b and the three bent pieces 231b, 232b, 233b, the heat dissipation area of the heat radiating fins 2〇b is increased. Therefore, the upper and lower flaps 210b and 220b and the three bent pieces 231b, 232b, and 233b effectively improve the heat dissipation efficiency of the heat sink. [0014] By forming the flaps 210, 210a, 210b, 220, 220a, 220b, 230b, the conduction path of heat on the fins can be increased, so that it can be conducted from a plurality of different ways to enhance the heat sink 2〇 '2〇a, 20b heat transfer efficiency. The flaps 210, 21a, 210b, 220, 220a, 220b, 230b can also irritate the airflow, and increase the heat convection coefficient of the heat sink 1' to cause the airflow to remain in the heat sink fins 20, 20a ' 20b The time for heat exchange with the heat dissipation tabs 20, 20a, 2b is prolonged. Moreover, since each of the fins 2, 20a, 20b has a bent back plate 210, 210a, 220, 220a, 230b, each piece is scattered 100115876 Form No. A0101 Page 9 / Total 2 page 1002026614- [0015] [0015] [0015] [0018] [0020] [0024] [0024] [0024] 100115876 The heat fins 20, 20a, 20b have a large heat dissipation area, thereby The heat dissipation efficiency of the heat sink 10 is improved. Moreover, since each of the fins 20, 20a, 20b of the fins 210, 21〇a, 210b, 22〇, 22〇a, 220b, 230b is adjacent to the other fins 2〇, 2〇a2〇 The b phase abuts, thus also increasing the stability of the heat sink 1〇, making it less prone to deformation. It can be understood that the above-mentioned flaps 210, 21〇a, 21〇b, 22〇, 22〇a, 220b, 23Gb may also be other shapes of flaps, forming airflow passages 41, 41a, 41b, 42, 42a, 42b, 43, 43a, 43b may also become corresponding other shapes, such as trapezoids, hexagons, and the like. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows a conventional heat sink. Fig. 2 is a perspective view showing the heat sink of the present invention. Fig. 3 is an enlarged view showing a chip in the heat sink of Fig. 2. Figure 4 is a front elevational view of one of the fins of the heat sink of Figure 3. Figure 5 shows a front view of the heat sink of Figure 2. Fig. 6 is a front elevational view showing a fin of one of the heat dissipating devices in the second embodiment of the present invention. Fig. 7 is a front elevational view showing a heat insulating device in a third embodiment of the present invention. [Description of main component symbols] 10: heat sink 20, 20a, 20b: heat sink fins 10th page/total 20 page form number A0101 1002026614-0 201245942 [0025] [0027] [0028] [0030] ] [0031]
[0032] [0033] [0034] [0035] [0036] [0037][0037] [0037] [0037]
[0038] [0039] [0040] [0041] 210、 210a、210b :上折板 211、 211a :第一彎折部 212、 212a :第二彎折部 213、 213a :第三彎折部 220、 220a、220b :下折板 221、 221a、231b :第一彎折片 222、 222a、232b :第二彎折片 223、 223a、233b :第三彎折片 30、30a、30b ··本體 301、301a :圓角 310 :斜邊 311 :鈍角 312 :上邊界 313 :下邊界 314 :前邊界 315 :後邊界 41、41a、42、42a、43、43a: 氣流通道 100115876 表單編號A0101 第11頁/共20頁 1002026614-0[0040] [0040] [0040] 210, 210a, 210b: upper flaps 211, 211a: first bends 212, 212a: second bends 213, 213a: third bends 220, 220a, 220b: lower folding plates 221, 221a, 231b: first bending pieces 222, 222a, 232b: second bending pieces 223, 223a, 233b: third bending pieces 30, 30a, 30b · body 301, 301a: Rounded corner 310: Beveled edge 311: Obtuse angle 312: Upper boundary 313: Lower boundary 314: Front boundary 315: Rear boundary 41, 41a, 42, 42a, 43, 43a: Air flow passage 100115876 Form number A0101 Page 11 / Total 20 pages 1002026614-0