201142200 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種燈具及其散熱器，特別是一種利用 風扇驅使空氣流通以輔助散熱，且更適用於嵌入式場合， 以提供室内或室外照明之燈具及其散熱器。 【先前技術】 習知燈具結構，如中華民國公告M330426號「燈具散 熱結構」專利案’請配合參照第1圖所示，係依照該燈具 之實際裝設方向翻轉180度，該燈具係具有一散熱座體81 、一電路板82、一發光二極體83、一散熱風扇84及一燈 頭85。該散熱座體81具有一凹陷部811及一容置部812 ’該電路板82及發光二極體83係設於該凹陷部811内， 該散熱風扇84則設於該容置部812内，且該燈頭85係結 合於該容置部812外側。其中’該散熱座體81另設有貫穿 至轉谷置部812之數個散熱孔813 ’該燈頭85則設有數個 導風孔851 ’因此，當該散熱風扇84運轉時，可驅使空氣 經由各該導風孔851被吸入該容置部812内，並由各該散 熱孔813排出，以驅散該燈頭85所產生之熱能。 其使用時’係將該燈頭85結合於一燈座，並使各該 散熱孔813及導風孔851外露，以便該容置部812内之空 氣得與外界互相流通。然而，此習知結構用以吸入空氣之 各該導風孔851係位在該燈具之較上方處，且基於熱空氣 上升原理，各該散熱孔813所排出之熱空氣會上升並積於 該燈具較上方之周遭，並經由各該導風孔851再次被吸入 PKl 1601-final —4 — 201142200 ，影響散熱效能。而且，為了配合裝潢之整體美觀性需求 ，而必須將該燈具呈内嵌隱藏設置時，由於各該散熱孔813 及導風孔851係埋入於裝潢隔層之天花板上方，僅保留該 發光二極體83部分顯露於天花板表面’但天花板上方與建 築物本身之水泥樓層板之間的空間一般為封閉，該空間不 易與外界空氣循環，會影響其空氣流通效果及散熱效能， 進而產生積熱問題，影響該燈具之使用壽命。 另一種習知燈具結構，如中華民國公告M346745號「 端向排熱式LED燈具」專利案，再配合參照第2圖所示， 該燈具係具有一上殼91、一下殼92、一散熱組件93及一 LED燈組94 ’該上殼91内部具有一容置空間911，且該 上殼91及下殼92可組裝形成一燈具殼體，並使該散熱組 件93及LED燈組94設於該容置空間911内。其中，該上 喊91设有數個通氣孔912，該下殼92則設有數個穿透孔 921 ’因此，當該散熱組件93之散熱風扇931運轉時，可 驅使空氣經由各該通氣孔912被吸入該容置空間9Π内， 並由各該穿透孔921排出，以驅散該LED燈組94所產生 之熱能。 然而，此習知結構用以吸入空氣之各該通氣孔9丨2亦 位在該燈具之上方處，使各該穿透孔921所排出之熱空氣 也會上升，並經由各該通氣孔912再次被吸入，影響散熱 效能。且該習知結構呈内嵌隱藏設置時，雖然該各穿透孔 921係顯露於天花板表面，但是各該通氣孔912仍是埋入 於天花板上方，故仍存在有空氣流通及散熱效能不佳，進 而產生積熱並影響該燈具使用壽命之問題。 丨 PK1160 卜 final —5 — 201142200 【發明内容】 本發明之目的係提供/種燈具及其散熱器，可提升該 燈具之散熱效能。 本發明之另一目的#提供一種燈具及其散熱器，可延 長該燈具之使用壽命。 本發明之再一目的#提供一種燈具及其散熱器，可避 免產生擾流。 - 根據本發明一種燈具，係包含：一外罩，具有一開口 ，且由該開口凹入有〆容爹；一散熱器，設於該開口，該 · 散熱器具有一側牆、一#雜、數個第一連接件、數個第一 氣流通道及一第二氣流通道’該座體位於該該側牆内並與 該侧牆内周壁具有間隙，该座體係藉由各該第一連接件連 接於該侧牆内周壁，.該間隙處之任二相鄰的第一連接件之 間均形成該第一氣流通道，且該第二氣流通道係形成於該 侧牆外周壁及該容室内璧面之間；一風扇’位於該容室内 並設於該散熱器其中一側；及一發光元件，設於該散熱器 另一侧。 · 根據本發明一種燈具之散熱器，係具有一側牆、一座 體、數個第一連接件、數個第一氣流通道及一第二連接件 ’該座體位於該侧牆内並與該側牆内周壁具有間隙，該座 體係藉由各該第一連接件連接於該側牆内周壁，該間隙處 ，任二相鄰的第一連接件之間均形成該第一氣流通道，該 弟二連接件係設於該側牆外周壁。 【實施方式】 PKl 1601-final 201142200 為讓本發明之上述及其他目的、特徵及優點能更明顯 易懂’下文特舉本發明之較佳實施例，並配合所附圖式， 作洋細說明如下： 請參照第3圖所示，係本發明第一實施例之燈具，該 燈具係包含有一外罩丨、一散熱器2、一風扇3及一發光元 件4 °其中’該散熱器2係設置於該風扇3及發光元件4 之間’且該外罩1係設於該散熱器2外，因此，該風扇3 運轉時’可驅使空氣經由該散熱器2被吸入及吹出，使該 外罩1内之空氣能夠與外界循環流通，以驅散該發光元件 4所產生之熱能。 該外罩1之一端係具有一開口 U，且由該開口 U凹 入形成有一容室12。 請參照第3及4圖所示，該散熱器2係設於該外罩1 之開口 11處’且較佳係以具高導熱係數之材質製成，該散 熱器2具有一侧牆21、一座體22、數個第一連接件23、 數個第一氣流通道24及一第二氣流通道25。 該侧牆21可為一環牆，該座體22係位在該側牆21 中央，該座體22與該側牆21内周壁之間具有間隙，且該 座體22係藉由各該第一連接件23連接於該側牆21内周壁 ’使該間隙處之任二相鄰的第一連接件23之間均形成該第 一氣流通道24，且各該苐一氣流通道24均具有二端，其 中第一端係連通該容室12，第二端則外露於該開口 n處 。該座體22係具有相對之一第一表面221及一第二表面 222，該第一表面221係面向該容室12，該第二表面222 則负向该容室12。各該第一連接件23均可為一鰭片，並s]201142200 VI. Description of the Invention: [Technical Field] The present invention relates to a luminaire and a heat sink thereof, in particular to a fan that drives air circulation to assist heat dissipation, and is more suitable for embedded occasions to provide indoor or outdoor illumination The luminaire and its radiator. [Prior Art] Conventional luminaire structure, such as the Republic of China Announcement M330426 "Lamp Heat Dissipation Structure" Patent Case, please refer to Figure 1 for the purpose of flipping 180 degrees according to the actual installation direction of the luminaire. The heat sink body 81, a circuit board 82, a light emitting diode 83, a heat sink fan 84 and a base 85 are provided. The heat sink body 81 has a recessed portion 811 and a receiving portion 812 ′. The circuit board 82 and the light emitting diode 83 are disposed in the recessed portion 811 , and the heat dissipating fan 84 is disposed in the receiving portion 812 . The base 85 is coupled to the outside of the receiving portion 812. The heat sink body 81 is further provided with a plurality of heat dissipation holes 813 extending through the valley portion 812. The lamp head 85 is provided with a plurality of air guiding holes 851. Therefore, when the heat dissipation fan 84 is operated, the air can be driven through the air. Each of the air guiding holes 851 is sucked into the accommodating portion 812 and discharged from each of the heat dissipating holes 813 to dissipate the heat energy generated by the lamp cap 85. When it is used, the base 85 is coupled to a socket, and the heat dissipation holes 813 and the air guiding holes 851 are exposed, so that the air in the receiving portion 812 can circulate with the outside. However, the air guiding holes 851 of the conventional structure for taking in air are located above the lamp, and based on the principle of rising hot air, the hot air discharged from the heat dissipation holes 813 rises and accumulates in the air. The luminaire is more than the surrounding area, and is again sucked into the PKl 1601-final —4 — 201142200 through each of the air guiding holes 851, which affects the heat dissipation performance. Moreover, in order to meet the overall aesthetic requirements of the decoration, the luminaire must be embedded and hidden, since each of the vents 813 and the air guiding holes 851 are embedded in the ceiling of the decorative compartment, only the illuminating two are retained. The part of the polar body 83 is exposed on the ceiling surface', but the space between the ceiling and the concrete floor board of the building itself is generally closed, and the space is not easy to circulate with the outside air, which affects the air circulation effect and heat dissipation performance, thereby generating heat accumulation. The problem affects the service life of the luminaire. Another conventional lamp structure, such as the Republic of China Announcement No. M346745 "End-to-end heat-emitting LED lamp" patent case, and with reference to Figure 2, the lamp has an upper casing 91, a lower casing 92, and a heat-dissipating component 93 and an LED lamp set 94' has an accommodating space 911 inside, and the upper case 91 and the lower case 92 can be assembled to form a lamp housing, and the heat dissipating component 93 and the LED lamp set 94 are disposed on The accommodation space 911 is inside. The upper cover 91 is provided with a plurality of ventilation holes 912. The lower casing 92 is provided with a plurality of penetration holes 921. Therefore, when the heat dissipation fan 931 of the heat dissipation assembly 93 is operated, air can be driven through each of the ventilation holes 912. The space is accommodated in the accommodating space 9 , and discharged from each of the penetration holes 921 to dissipate the heat energy generated by the LED lamp group 94. However, the vent holes 9 丨 2 of the conventional structure for taking in air are also located above the luminaire, so that the hot air discharged from each of the penetration holes 921 also rises and passes through the vent holes 912. Inhaled again, affecting heat dissipation. Moreover, when the conventional structure is embedded and hidden, although the through holes 921 are exposed on the ceiling surface, each of the vent holes 912 is still buried above the ceiling, so there is still air circulation and heat dissipation performance. , which in turn generates heat and affects the life of the lamp.丨 PK1160 卜 final — 5 — 201142200 SUMMARY OF THE INVENTION The object of the present invention is to provide a luminaire and a heat sink thereof, which can improve the heat dissipation performance of the luminaire. Another object of the present invention is to provide a luminaire and a heat sink thereof that extend the life of the luminaire. Still another object of the present invention is to provide a luminaire and a radiator thereof that can avoid spoilage. - A lamp according to the present invention, comprising: a cover having an opening recessed by the opening; a heat sink disposed at the opening, the heat sink having a side wall, a #杂, number The first connecting member, the plurality of first air flow channels and the second air flow channel are located in the side wall and have a gap with the inner peripheral wall of the side wall, and the seat system is connected by each of the first connecting members The first air flow passage is formed between the adjacent first connecting members of the inner wall of the side wall, and the second air flow passage is formed on the outer peripheral wall of the side wall and the inner chamber. Between the faces; a fan 'located in the chamber and disposed on one side of the heat sink; and a light-emitting element disposed on the other side of the heat sink. A heat sink for a lamp according to the present invention, having a side wall, a body, a plurality of first connecting members, a plurality of first air flow passages, and a second connecting member, wherein the seat body is located in the side wall and The inner wall of the side wall has a gap, and the seat system is connected to the inner peripheral wall of the side wall by the first connecting member, and the first air flow channel is formed between any two adjacent first connecting members at the gap, The second connecting piece is disposed on the outer peripheral wall of the side wall. The above and other objects, features, and advantages of the present invention will become more apparent from the aspects of the invention. As shown in FIG. 3, the lamp according to the first embodiment of the present invention includes a cover 丨, a heat sink 2, a fan 3, and a light-emitting element 4° where the heat sink 2 is disposed Between the fan 3 and the light-emitting element 4 and the cover 1 is disposed outside the heat sink 2, when the fan 3 is in operation, the air can be driven to be sucked in and blown through the heat sink 2, so that the cover 1 is inside. The air can circulate with the outside to dissipate the heat energy generated by the light-emitting element 4. One end of the outer cover 1 has an opening U, and a cavity 12 is recessed by the opening U. Referring to Figures 3 and 4, the heat sink 2 is disposed at the opening 11 of the outer cover 1 and is preferably made of a material having a high thermal conductivity. The heat sink 2 has a side wall 21 and a The body 22 has a plurality of first connecting members 23, a plurality of first air flow passages 24, and a second air flow passage 25. The side wall 21 can be a ring wall, the seat body 22 is located at the center of the side wall 21, and the seat body 22 has a gap between the inner wall of the side wall 21, and the seat body 22 is separated by the first The connecting member 23 is connected to the inner peripheral wall of the side wall 21 such that the first air flow passage 24 is formed between any two adjacent first connecting members 23 at the gap, and each of the first air flow passages 24 has two ends. The first end is connected to the chamber 12, and the second end is exposed at the opening n. The body 22 has a first surface 221 and a second surface 222 opposite to the chamber 12, and the second surface 222 is opposite to the chamber 12. Each of the first connecting members 23 can be a fin, and s]
PK11601-finaJ 201142200 由該侧膽21之内周壁呈徑向朝内延伸，使各該第一連接件 23呈凸出於該第一表面221，以增加該第一表面221之散 熱面積’而且，該第一表面221中央另設有一凸部223。 該第二氣流通道25係形成於該侧牆21外周壁及該容 室12内壁面之間，在本實施例中’係於該側牆以外周壁 呈徑向設有數個第二連接件26，且各該第二連接件％均 可為-鰭片’以增加該第二氣流通道25内部壁面之散孰面 積，且該第二氣流通道25具有二端，其中第—端係連通該 容室12 ’第二端則外露於該.^處。各該第二連接件 26係可由該側牆21之外周壁呈放射狀向外一體延伸，而 且，各該第二連接件26之外周另連接有—外環部27，該 外環部27可為一連續環冑（如圖所示），或是 人 件所組成之不連續環體，且透過該外環部27可將該散 2結合於料罩卜並使鮮m21呈凸出於該開口 ^處。 另外’該側牆21係具有一第一端緣211及一第二端緣 2i2 ’該第-端緣211與該座體22之第一表面221相同均 朝向該谷室12 ’該第二端緣212沿其軸心線方向較佳係凸 出於該外罩1之開口 11 ’且該第二端緣212亦可凸出於該 第二表面222 ’使該側牆21可將各該第一氣流通道24、Z 該第二氣流通道25之第二端有效隔開。 該風扇3係位於該容室12内’且該風扇3具有二氣 流口 30a、30b，使各該第一氣流通道24之第一端均連通 其中一氣流口 3〇b ’該第二氣流通道25之 = 一氣流口 3〇a，因此，可引導空氣經由心= -氣流通道24及該第二氣流通道25之間麵。該風扇3 PKl 1601-final —8 — 201142200 之框架31設有數個組裝部32,且該側牆21亦可相對設有 數個固定部213 ’以提供數個固定元件透過各該組裴部％ 將該風扇3固定於該散熱器2上。 s玄發光元件4係具有一基板41及至少一發光體42， 該發光體42較佳選擇為發光二極體，且該發光體42係設 置於該基板41之其中一面。 再參照第3及5圖所示’本發明第一實施例燈具之各 構件組成後’該風扇3及發光元件4係分別設置於該散熱 器2之二侧’該風扇3係朝向該第一表面221，且該凸部 223係可支撐定位該風扇3，該發光元件4則是以該基板 41連接該第二表面222。該散熱器2係透過該外環部27 結合於該外罩1之開口 11處’使該風扇3位於該容室12 内，該發光體42則外露於該開口 11處。而且，各該第一 氣流通道24及該第二氣流通道25均連通於該散熱器2之 二側之間，且各該第一氣流通道24及該第二氣流通道25 之第一端係分別連通該風扇3之二氣流口 30b、30a，各該 第一氣流通道24及該第二氣流通道25之第二端則呈外露 於該開口 11，且各該第一氣流通道24及該第二氣流通道 25之第二端在軸向上具有高度差，使該燈具以外之外界空 氣可經由該第一氣流通道24及該第二氣流通道25其中之 一被吸入該容室12，並由另一被導出。 請參照第5圖所示，本發明第一實施例之燈具實施時 ’該外罩1係埋入於一天花板5上方’且較隹使該外環部 27貼抵於該天花板5表面。當風扇3運轉時，可驅使空氣 經由該第一氣流通道24及該第二氣流通道25其中之一被[S] PK11601-final — 9 — 201142200 吸入該谷室12，並由另一被導出，以辅助驅散該發光元件 4所產生之熱能。而且’本㈣可藉由控制該風扇3之順 二逆旋轉方向以改變空氣之流通方向。例如，#該風扇3 $向旋轉時，係驅使空氣自該第二氣流通道2 5被吸入至該 f室12 ’且通過該風廢3後，並經由各該第一氣流通道24 "人出。反之，當該風扇3順向旋轉時，則驅使空氣自各該 第-氣流通道24被吸人至該容室12，並在通過該風扇3 後，經由該第二氣流通道25吹出，以辅助驅散該發光元件 4所產生之熱能。 但無論空氣之流通方向為何，本發明之各該第一氣流 通道24及該第二氣流通道25均外露於天花板5之表面， 可與，界线順髓環。而且，各該第-紐通道24及該 第二氣流通道25之第二端在軸向上具有高度差，且該側牆 21可將各該第-氣流通道24及該第二氣流通道之第二 h隔開，可將被吸人及排出之空氣有效隔開，以避免產生 紊流，亦可避免該燈具所排出之熱空氣又立即被回吸至該 容室U中，以提供較佳之空驗通效果及散熱效能。 睛參照第6及7圖所示，係本發明第二實施例之燈具 ’該燈具亦包含有—外罩1、—散熱器2…風扇6及-發 光凡件4。其中，該風扇6之框架61亦具有二氣流口 、60b、框架61及數個組裝部62等結構特徵。 相較於月ί述第-實施例’本第二實施例係進一步於該 風扇6之框架61設有一阻隔部63，該阻隔部63係由該框 架61之外周朝向外延伸之環狀板體，且該阻隔部63之外 周緣較佳覆蓋該侧牆21之第一端緣211。 201142200 因此，當該風扇6逆向旋轉時，可驅使空氣自該第二 氣流通道25被吸入至該谷室12，且通過該風扇ό後，並 經由各該第一氣流通道24吹出。且當該風扇6順向旋轉時 ，可驅使空氣自各該第一氣流通道24被吸入至該容室12 ，並在通過該風扇6後經由該第二氣流通道25吹出。 然而’無論該空氣之流通方向為何，該阻隔部63係 可進一步引導該第一氣流通道24及該第二氣流通道25内 的空氣僅旎經由該風扇6之二氣流口 6〇a、6〇b互相流通， • 以確保空氣依循固定之通道循環，以避免產生擾流。 請參照第8圖所示，係本發明第三實施例之燈具，該 燈具亦包含有-外罩1，、-散熱器7、一風扇6及一發光 元件4。其中’該外罩1’亦具有開口 u，及容室12,等結構 特徵，該散熱器7亦具有側牆71、第一端緣711、第二端 緣712、固定部713、座體72、第一表面72卜第二表面 722、凸部723、第-連接件73、第一氣流通道％、第二 A流通道75、第二連接件76及外環部77等結構特徵。 相較於則述第二實施例，本第三實施例係進一步於該 外罩1，設有至少-個穿孔13,，本實施例係於該外罩⑶ 有數個牙孔13，因此，該第二氣流通道75吸氣或排氣時 ’各該穿孔13曰，除了可提供辅助吸氣及排氣之功能，以增 加ί進、出風量’提升散熱效能外’亦可降低擾流所產生 之=音。而且，本第三實施例侧牆71之第二端緣7 一步形成外擴型態，使該第二_ 712略呈·口形狀， 可增加空氣流通之順暢性。The PK11601-finaJ 201142200 extends radially inward from the inner peripheral wall of the side sill 21, so that the first connecting members 23 protrude from the first surface 221 to increase the heat dissipating area of the first surface 221. A convex portion 223 is further disposed in the center of the first surface 221 . The second air flow channel 25 is formed between the outer peripheral wall of the side wall 21 and the inner wall surface of the space 12, and in the embodiment, a plurality of second connecting members 26 are radially disposed on the outer peripheral wall of the side wall. And each of the second connecting members % can be a - fin ' to increase the divergence area of the inner wall surface of the second air flow passage 25, and the second air flow passage 25 has two ends, wherein the first end is connected to the chamber 12 'The second end is exposed at the .^. Each of the second connecting members 26 can be integrally extended radially outwardly from the outer peripheral wall of the side wall 21, and an outer ring portion 27 is further connected to the outer periphery of each of the second connecting members 26, and the outer ring portion 27 can be Is a continuous loop (as shown), or a discontinuous ring composed of a person, and through the outer ring portion 27, the gap 2 can be bonded to the cover and the fresh m21 protrudes from the opening. ^ at the office. In addition, the side wall 21 has a first end edge 211 and a second end edge 2i2'. The first end edge 211 is identical to the first surface 221 of the base 22 toward the valley chamber 12'. The edge 212 preferably protrudes from the opening 11 ′ of the outer cover 1 along the axial direction of the outer cover 1 and the second end edge 212 can also protrude from the second surface 222 ′ such that the side wall 21 can be the first one Airflow passages 24, Z The second ends of the second airflow passages 25 are effectively spaced apart. The fan 3 is located in the chamber 12 and the fan 3 has two airflow ports 30a, 30b, such that the first ends of the first airflow passages 24 are connected to one of the airflow ports 3'b'. 25 = an air flow port 3 〇 a, therefore, the air can be guided through the heart = - air flow channel 24 and the second air flow channel 25 between the faces. The frame 31 of the fan 3 PK1 1601-final — 8 — 201142200 is provided with a plurality of assembly parts 32, and the side wall 21 can also be provided with a plurality of fixing portions 213 ′ to provide a plurality of fixing elements through each of the group of parts. The fan 3 is fixed to the heat sink 2. The sinusoidal light-emitting element 4 has a substrate 41 and at least one illuminant 42. The illuminant 42 is preferably selected as a light-emitting diode, and the illuminant 42 is disposed on one side of the substrate 41. Referring to FIGS. 3 and 5, after the components of the first embodiment of the present invention are assembled, the fan 3 and the light-emitting element 4 are respectively disposed on two sides of the heat sink 2, and the fan 3 is oriented toward the first The surface 221, and the protrusion 223 can support the positioning of the fan 3. The light-emitting element 4 is connected to the second surface 222 by the substrate 41. The heat sink 2 is coupled to the opening 11 of the outer cover 1 through the outer ring portion 27 such that the fan 3 is located in the chamber 12, and the illuminant 42 is exposed at the opening 11. Moreover, each of the first air flow channel 24 and the second air flow channel 25 are connected between the two sides of the heat sink 2, and the first ends of the first air flow channel 24 and the second air flow channel 25 are respectively Connecting the airflow ports 30b and 30a of the fan 3, the second ends of the first airflow channel 24 and the second airflow channel 25 are exposed to the opening 11, and the first airflow channel 24 and the second The second end of the air flow passage 25 has a height difference in the axial direction, so that the outer air outside the luminaire can be sucked into the chamber 12 via one of the first air flow passage 24 and the second air flow passage 25, and the other Is exported. Referring to Fig. 5, in the case of the lamp according to the first embodiment of the present invention, the outer cover 1 is embedded in a ceiling 5 and the outer ring portion 27 is relatively attached to the surface of the ceiling 5. When the fan 3 is in operation, the air can be driven to be sucked into the valley chamber 12 by one of the first air flow passage 24 and the second air flow passage 25 by [S] PK11601-final - 9 - 201142200, and is exported by another. To assist in dissipating the thermal energy generated by the light-emitting element 4. Moreover, the present (4) can change the flow direction of the air by controlling the direction of the reverse rotation of the fan 3. For example, when the fan 3$ is rotated, the air is driven from the second airflow passage 25 to the f chamber 12' and passes through the wind waste 3, and through each of the first airflow passages 24 " Out. On the other hand, when the fan 3 rotates in the forward direction, the air is driven from each of the first air flow passages 24 to the chamber 12, and after passing through the fan 3, is blown out through the second air flow passage 25 to assist in dispersing. The heat energy generated by the light-emitting element 4. However, regardless of the direction of circulation of the air, each of the first airflow passages 24 and the second airflow passages 25 of the present invention are exposed on the surface of the ceiling 5, and may be aligned with the medullary ring. Moreover, each of the first-new channel 24 and the second end of the second airflow channel 25 have a height difference in the axial direction, and the sidewall 21 can respectively connect each of the first airflow channel 24 and the second airflow channel By separating the air, the air sucked and discharged can be effectively separated to avoid turbulence, and the hot air discharged from the lamp can be prevented from being immediately sucked back into the chamber U to provide better air. Pass-through effect and heat dissipation performance. Referring to Figures 6 and 7, a luminaire according to a second embodiment of the present invention includes a cover 1, a radiator 2, a fan 6, and a illuminator 4. The frame 61 of the fan 6 also has structural features such as two airflow ports, 60b, a frame 61, and a plurality of assembly portions 62. The second embodiment of the present invention is further provided with a blocking portion 63 which is an annular plate body extending outward from the outer circumference of the frame 61. The outer periphery of the blocking portion 63 preferably covers the first end edge 211 of the side wall 21. 201142200 Therefore, when the fan 6 is rotated in the reverse direction, air can be driven from the second air flow passage 25 to the valley chamber 12, and is exhausted by the fan and blown through each of the first air flow passages 24. And when the fan 6 rotates in the forward direction, air can be driven from each of the first air flow passages 24 to the chamber 12, and is blown out through the second air flow passage 25 after passing through the fan 6. However, regardless of the direction of circulation of the air, the blocking portion 63 can further guide the air in the first air flow passage 24 and the second air flow passage 25 only through the air flow ports 6〇a, 6〇 of the fan 6. b Circulate with each other, • to ensure that the air circulates in a fixed channel to avoid turbulence. Referring to Fig. 8, a lamp according to a third embodiment of the present invention also includes a cover 1, a heat sink 7, a fan 6, and a light-emitting element 4. The outer cover 1 also has an opening u, a chamber 12, and the like. The heat sink 7 also has a side wall 71, a first end edge 711, a second end edge 712, a fixing portion 713, a seat body 72, The first surface 72 includes structural features such as the second surface 722, the convex portion 723, the first connecting member 73, the first air flow passage %, the second A flow passage 75, the second connecting member 76, and the outer ring portion 77. Compared with the second embodiment, the third embodiment further includes at least one through hole 13 in the outer cover 1. In this embodiment, the outer cover (3) has a plurality of dental holes 13 and, therefore, the second When the airflow channel 75 is inhaling or exhausting, each of the perforations is 13 曰, in addition to providing auxiliary suction and exhaust functions, so as to increase the amount of air inflow and outflow, and improve the heat dissipation performance, the noise can also be reduced. sound. Moreover, the second end edge 7 of the side wall 71 of the third embodiment forms an expanded state in one step, so that the second _ 712 has a slightly port shape, which can improve the smoothness of air circulation.
如上所述，本發明之外罩埋入於天花板上方時，各該ί S ΡΚ11601-final —11 一 201142200 第-氣流通道及第二氣流通道之第二端均外露於天花板表 面，可與外界线順職環，以提料氣流通效果及散熱 效能。 —本發明之空氣流通效果及散熱效能較佳 ，可將該發光 元件所產生之減迅速排除，延長紐具之使用壽命。 本發明側牆之第二端緣沿其軸心線方向係凸出於該 外罩之開Π及該第。二表面，且各該第—氣流通道及第二氣 /瓜通道之第—端在軸向上具有高度差，使該側牆可將各該 第-氣流通道及第二氣流通紅第二端關，以避免被吸 入及排出之空氣互相推擠而產生紊流。 而且，該風扇之阻隔部係可進一步引導該第一氣流通 道及第二氣流通道_空間僅驗由賴扇之二氣流口互 相流通’確保雜依_定线_環，以聽產生擾流 〇 、T然本發明已利用上述較佳實補揭示，然其並非用 以=疋本發明’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 毛月所保4之技術範’，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。 PK11601-final —12 — 201142200 【圖式簡單說明】 第1圖：第一種習知結構之組合剖視圖。 第2圖：第二種習知結構之組合剖視圖。 第3圖：本發明第一實施例之立體分解圖。 第4圖：本發明散熱器之俯視平面圖。 第5圖：本發明第一實施例之組合剖視圖。 第6圖：本發明第二實施例之立體分解圖。 第7圖：本發明第二實施例之組合剖視圖。 第8圖：本發明第三實施例之組合剖視圖。 【主要元件符號說明】 〔本發明〕 1 外罩 11 開口 1， 外罩 11， 開口 13, 穿孔. 2 散熱器 21 側牆 212 第二端緣 22 座體 222 第二表面 23 第一連接 12 容室 12’容室 211第一端緣 213固定部 221第一表面 223凸部 24 第一氣流通道 PK11601-final —13 — 201142200 25 第二氣流通道 26 第二連接件 27 外環部 3 風扇 30a 氣流口 30b 氣流口 31 框架 32 組裝部 4 發光元件 41 基板 42 發光體 5 天花板 6 風扇 60a 氣流口 60b 氣流口 61 框架 62 組裝部 63 阻隔部 7 散熱器 71 側牆 711 第一端緣 712 第二端緣 713 固定部 72 座體 721 第一表面 722 第二表面 723 凸部 73 第一連接件 74 第一氣流通道 75 第二氣流通道 76 第二連接件 77 外環部 〔習知〕 81 散熱座體 811 凹陷部 812 容置部 813 散熱孔 82 電路板 83 發光二極體 ΡΚ11601-final — 14 — 201142200 84 散熱風扇 85 燈頭 851 導風孔 91 上殼 911 容置空間 912 通氣孔 92 下殼 921 穿透孔 93 散熱組件 931 散熱風扇 94 LED燈組 PKl 1601-final 15 —As described above, when the outer cover of the present invention is embedded in the ceiling, the second end of each of the first air flow passage and the second air flow passage are exposed on the ceiling surface, and can be lined with the outside. The job ring is used to improve the airflow effect and heat dissipation performance. - The air circulation effect and heat dissipation performance of the present invention are better, and the reduction caused by the light-emitting element can be quickly eliminated, thereby extending the service life of the harness. The second end edge of the side wall of the present invention protrudes in the direction of its axis from the opening of the outer cover and the first. a second surface, and each of the first air flow passage and the second end of the second air/guap passage have a height difference in the axial direction, so that the side wall can turn each of the first air flow passage and the second air flow to the second end In order to avoid the turbulence caused by the air being sucked in and discharged from each other. Moreover, the blocking portion of the fan can further guide the first air flow channel and the second air flow channel _ space only to check that the two air flow ports of the fan are circulated to each other to ensure the 杂 定 _ ring to listen to the turbulence 〇 And the present invention has been disclosed in the above-described embodiments, and is not intended to be used in the present invention. Any of the above-described embodiments may be modified and modified without departing from the spirit and scope of the present invention. It is still the technical scope of this patent, and the scope of protection of the present invention is subject to the definition of the scope of the patent application. PK11601-final —12 — 201142200 [Simple description of the diagram] Figure 1: A cross-sectional view of the combination of the first conventional structure. Figure 2: A cross-sectional view of a combination of a second conventional structure. Fig. 3 is an exploded perspective view showing the first embodiment of the present invention. Figure 4: Top plan view of the heat sink of the present invention. Fig. 5 is a sectional view showing the combination of the first embodiment of the present invention. Figure 6 is a perspective exploded view of a second embodiment of the present invention. Figure 7 is a sectional view showing the combination of the second embodiment of the present invention. Figure 8 is a sectional view showing the combination of the third embodiment of the present invention. [Main component symbol description] [Invention] 1 Cover 11 Opening 1, Cover 11, Opening 13, Perforation. 2 Radiator 21 Side wall 212 Second end edge 22 Seat 222 Second surface 23 First connection 12 Room 12 'Capacity 211 first end edge 213 fixing portion 221 first surface 223 convex portion 24 first air flow passage PK11601-final — 13 — 201142200 25 second air flow passage 26 second connecting member 27 outer ring portion 3 fan 30a air flow port 30b Air flow port 31 Frame 32 Assembly part 4 Light-emitting element 41 Substrate 42 Light-emitting body 5 Ceiling 6 Fan 60a Air flow port 60b Air flow port 61 Frame 62 Assembly part 63 Barrier 7 Radiator 71 Side wall 711 First end edge 712 Second end edge 713 Fixing portion 72 seat body 721 first surface 722 second surface 723 convex portion 73 first connecting member 74 first air flow passage 75 second air flow passage 76 second connecting member 77 outer ring portion [conventional] 81 heat sink body 811 recessed Portion 812 accommodating portion 813 heat dissipation hole 82 circuit board 83 light emitting diode ΡΚ 11601-final — 14 — 201142200 84 cooling fan 85 lamp head 851 guide Air hole 91 Upper case 911 accommodating space 912 Vent hole 92 Lower case 921 Through hole 93 Heat dissipating component 931 Cooling fan 94 LED light group PKl 1601-final 15 —