1373590 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種燈具，尤並s 個散熱風狀作動_及運作，、疋—種可藉由控制數 機制的燈具。. 以具有數種不同散熱 【先前技術】 習知具有散熱模組之燈1, M339636號「LED燈散⑽構、中華民國公告第 双"，、、。構（一）」新型專利牵。钤衿 具具有一燈具本體，該燈具本體μ ν、 ~且 σ 不镫δ又有數個發光二極體及一 =，另於該燈具本體凸設有數個散熱片。#此 發光二極體因通電而產生熱量時，即可 助該發光二極體所產生的熱量迅迷擴散。 " ，而’習知燈具的散熱片雖然可吸收各該發光二極 體因通電後所產生的熱量。惟由於各該散熱片周邊沒有盆 他辅助散熱之設計，使錄軸吸收熱量後仍無法迅速ς 進行熱交換；因此，導致該散熱片吸收各該發光二極體所 產生之熱量後’仍容易造成該散熱片過度積熱等問題，進 而嚴重影響該燈具之整體散熱效果，令該燈具之使用壽命 降低。 為解決前述習知燈具的缺點，如第i圖所示，係揭 示另-種習知燈具9,該燈具9具有一基板91，該基板 91之一側表面設有數個發光二極體911，該基板91之另 側表面則5又置一散熱縛片92;該散熱鰭片92二端分別 為一第一端921及一第二端922 ;另於該散熱鰭片92之 第一端921設置一散熱風扇93,以便構成一散熱模組。 藉此，該散熱鰭片92可快速吸收各該發光二極體911因 通電所產生的熱量，並同時利用該散熱風扇93驅使氣流 通過該散熱鰭片92,以便該散熱鰭片92可迅速地與氣流 進行熱交換作用，進而提升該散熱模組之整體散熱效果。 請再參照第1 β所示，由於該散熱風扇93僅設置於 該散熱鰭片92之第一端921位置，因此，該散熱風扇93 所能提供予該散熱鰭片92的散熱效果，僅以鄰近於該散 熱鰭片92之第一端921的區域為較佳，該散熱鰭片92之 第二端922的區域因遠離於該散熱風扇93，故散熱效果 較差。另外，習知燈具9長期使用後，容易於該散熱鰭片 92内累積過多灰塵，由於該燈具9並無除塵機制，相對 亦會影響該散熱風扇93之散熱效果。更重要的是，當該 散熱風扇93長時間不斷的運作時，將容易導致該散熱風 扇93損壞；或者，當該發光二極體911過熱時，單一散 熱風扇93仍無法有效降低該發光二極體911之溫度。整 體而言，習知燈具9之散熱風扇93未能提供更為良好且 -均衡的散熱·作用’故無法進=步提升該-燈具.9—之使用.壽 命。 為改善前述習知燈具9的諸多問題，或有業者思及 在該散熱縛片92上Ί &數里更多的散熱風扇93。然而， 當數個散熱風扇93同時運作的情形下」雖可暫時提升整 體散熱效果，惟由於並無良好的結構設計及控制機制，因 此，當數個散熱風扇93同時長時間運作時，仍容易導致 各該散熱風扇93損壞；再者’即使設置數個散熱風扇 1373590 93’亦無法解決該散熱鰭片％容易累積灰塵而影響散熱 效果之缺點，故仍有加以改善之必要。 【發明内容】 本發明係提供一種燈具，用以解決前述習知燈具之 散熱模組散熱效果不佳等問題，為主要之發明目的。 本發明之另一發明目的，係提供一種無須藉由單一 散熱風扇糾騎作，亦可達咖定散熱效果的燈具。 本發明之再-發明目的，係提供_種具有除塵功能 的燈具。 為達到前述發明目的，本發明所運用之技術手段及 藉由該技術手段所能達到之功效包含有： 一種燈具，至少包含一基板、一導流件、數個散熱 風扇及一控制單元。該基板具有一第一表面及一第二表 面，該第一表面設有至少一發光元件；該導流件結合該基 板，該導流件與該基板的第二表面之間形成一氣流調節空 間，且該導流件具有連通該氣流調節空間的數個導風口； 該數個散熱風扇分別結合於該導流件之數個導風口；該控 制單元電性連接該數個散熱風扇”藉此’該控制單元控制 各該散熱風扇之作動時機及運作方式，使該燈具具有數種 散熱機制，以達到提升散熱效果、具有除塵功能及延長散 熱風扇之使用壽命等諸多功效。 所述導流件設有至少一通氣孔，該通氣孔連通該氣 流調節空間。藉此，使各該散熱風扇之氡流導引可更為順 暢。 —6 — 所述導流件之導風口數量為二個，該二個導風口分 別形成於該導流件之相對二端位置。藉此，以提供更為均 衡的辅助散熱效果。 所述導流件具有數個散熱鰭片，各該散熱鰭片位於 該氣流調節空間内。藉此，以達到提升熱傳導效果之功 效。 所述控制單元包含一電源供應器及一控制電路，該 電源供應器電性連接該控制電路，該控制電路分別電性連 接該數個散熱風扇。藉此，以提供較佳之擴充性。 所述控制電路設置於其中一散熱風扇内部。藉此， 以達到節省空間之功效。 所述導流件係為一殼罩，該殼罩具有圍繞形成框體 的數個側板，以及結合各該側板的一頂板，該導流件之各 側板結合該基板之外側周緣，該氣流調節空間形成於該頂 板與該基板之第二表面之間，各該導風口形成於該頂板。 藉此，該導流件與該基板之間可形成更為寬闊之氣流調節 二間，使該控制單元更易於控制各該散熱風扇達到數種不 -同散熱機制I. — -....... _...... _ ....... 所述基板設有一感溫元件，該感溫元件電性連接該 控制單元。藉此，以供該控制單元可透過該感溫元件立即 感測該發光元件之溫度，以提供較為適當之散熱機制。 一種燈具，包含一基板、一導流件、數個散熱風扇 及一控制單元。該基板具有一第一表面及一第二表面，該 第一表面設有至少一發光元件；該導流件結合該基板之第 二表面；該數個散熱風扇分別結合該導流件；該控制單元 電性連接贿地_扇。藉此，馳鮮元可控制各节 動時機及運作方式’使該燈具具有數種散熱 *5樣具有料散熱縣、具嫌塵功能及延長散 :風扇之細壽命科料，更可減精簡整體結構複雜 度β 【實施方式】 為讓本發明之上収其他目的、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’作詳細說明如下： 晴參照第2圖所示，本發具至少包含__基板1〇 、一導流件20、數個散熱風扇3〇及一控制單元4(^該基 板10具有一發光功能；該導流件20可結合該基板10 ; 該數個散減扇30結合料齡20，以便透職導流件 20針對該基板10進行散熱；該控制單元4〇係電性連接 各該散熱風扇30，用以控制各該散熱風扇3〇之作動時機 及運作方式，而可提供數種不同之散熱機制。 該基板10相對之二側表面分別為一第一表面u及一 第二表面12 1該第一表面η設有數個發光元件.13 (亦可 視實際需求而僅設置單一發光元件13)，各該發光元件13 可為發光二極體（LED)、燈泡或其他具有發光功能之構 件。 該導流件20較佳係由可導熱之材質所製成，且該導 流件20結合該基板10，使該導流件2〇與該基板1〇之第 二表面12之間可形成一氣流調節空間21 ;另外，該導流 件2〇具有數個導風σ 22，各該導風口 22連通該氣流調 節空間21。 /該數個散熱風扇30可為鼓風扇或轴流式風屬，較佳 係選用如圖所示之轴流式風扇。該數個散熱風扇3〇分別 具有二導風部3卜其中-導風部31可提供人風功能，另 一導風部31 Τ提供出風功能。該數個散熱風扇3〇分別結 。於該導流件20之各導風口 22，且該數健熱風扇4〇 之其中一導風部31係朝向該氣流調節空間21，另一導風 部31則朝向外界空間。 該控制單元40係電性連接該數個散熱風扇3〇，用以 控制各該散熱風扇30之作動時機及運作方式。 本發明燈具於實際使用時，該基板1〇之發光元件13 可於通電後投射燈光，各該發光元件13所產生之熱量可 被傳導至該導流件20之氣流調節空間21 ;此時，即可利 用各該散熱風扇30驅使氣流進入該氣流調節空間21，以 利於進行熱父換作用後，再藉由各該散熱風扇將氣流 導至外界空間，進而可達到預定之散熱效果。 -更詳s之-’-藉由别揭之結構特徵，本發明燈具可利 用該控制單元40與各該散熱風扇3〇的結構組合設計，達 到如下所述之數種散熱機制及諸多特點： 1、請參照第3及4圖所示，假設該基板1〇之發光 元件13於實際運作過程中不至於過熱時，該控制單元 可控制各該散熱風扇30交替作動，使各該散熱風扇3〇皆 無須長時間運作’以提高整體使用壽命。如第3圖所示， 係揭示該控制單元40事先僅控制其中一散熱風扇3〇作動 ，其餘散熱風扇30則暫時停止運作；另如第4圖示，當 經過一預定時間後（依使用者實際需求設定該時間之長短 )，再由該控制單元40控制先前作動之散熱風扇3〇停止 運作，並改由控制其他散熱風扇3〇開始作動。藉此，各 該散熱風扇30即可交替運作，在仍可達到預定散熱效果 的條件下’更可有效避免單一散熱風帛％目長時間運作 而損壞。 2、請參照第5圖所示’假設該基板1〇之發光元件 13於實際運作過程巾容易過鱗，該控制單元4Q可控制 各該散熱風扇30同時作動，以便全面性進行散熱，故可 更有效避免該發光元件13 _熱而錢，進而提供較佳 之散熱效果。 3、請參照第6圖所示，假設該導流件20之導風口 22堆積過多灰塵時，該控制單元4〇可藉由控制各該散献 風扇30正轉或反轉作動，使各該散熱風扇％除可利用正 ^作動以提供散熱作料，亦可如圖所示藉由控制各該散 風二3=反轉作動’並配合軸流式風扇之扇葉設計特 ’使該·調郎空間21内部之氣流逆流，再進經 22排放至_間，當該氣流通過該導風口 的過財’即刊時絲堆齡料風口 22 ，進而可確賴導風σ 22不會形植 二y有效提升整體散熱效果，以延長本發明燈具3用里 4、假設當其卜散賊扇3() 4〇仍可控縣娜之賴朗3Q_作 1373590 本發明燈具之正常運作β 藉由上述本發明燈具之結構設計概念及作動原理， 本發明燈具亦可進-步變化出如下所述之其他㈣結構特 徵，使本發明燈具之功能更趨近於完善，其中： 、 請參照第2、3及4圖所示，所述導流件2〇之導風 口 22數量較佳可形成二個，該二個導風σ 22可分別形成 於該導流件2G之相對二端位置；另外，該散熱風扇扣之 數量亦可為二個，該二散熱風扇3〇則分別結合該二導風 口 22。藉此，當該控制單元4〇控制該二散熱風扇％同 時作動時，該一散熱風扇3〇可透過該氣流調節空間21提 供該基板1G之發光元件13更柄躺獅散熱效果，以 確保位於職板10相對二端之發光元件13，同樣可透過 該二散熱風扇30而獲得較佳之散熱效果。 請參照第2、3及4圖所示，所述導流件20主要係 作為連接該基板10及數個風扇3〇之用途，以供該數個風 扇30可透過該導流件2〇對該基板1〇之發光元件13進行 散熱，因此，該導流件20可視實際需求而選用任何具有 刖述功能之構件·，-例如“該導流件2：〇 —可.選用一殼罩或一 散熱鰭片等。舉例而言，如圖所示之實施例中，該導流件 2〇係為一殼罩，該殼罩具有圍繞形成框體的數個側板（ 未標示），以及結合各該侧板的一頂板（未標示）；該導流 件20可利用各該側板結合該基板之外侧周緣，使該氣 流調節空間21可形成於該頂板與該基板之第二表面12之 間，而各該導風口 22較佳則可形成於該頂板；藉此，該 導流件20與該基板1〇之間可形成較為寬闊之氣流調節空 —11 — 1373590 =21 ’以便該控制早％ 4。更容易控制各該散熱風扇％ 形成數種不同的散熱機制。 产請參照第5圖所示，所述導流件20較佳另設有一通 乱孔23，該通氣孔23連通該氣流調節空間21，且該通氣 孔23的數量可為一個或數個以上；藉此，當該控制單元 〇控制各該散熱風扇30同時作動時，各該導風部31可 ，定為入風魏，_通氣孔23财設定出風功能，使 各該散熱風扇3G之氣流導引更為順暢。 請參照第7圖所示’所述導流件2〇較佳另具有數個 散…韓>1 24，賴钱鰭片24位於該氣流調節空間21 ^ ;藉此’ _各該散熱鰭片24之熱傳導作用，使各該 光7L件13所產生之熱量可更為糊地被料至該導流 件2〇之氣流調節空間2卜以達到更佳的熱傳導效果。 請參照第8圖所示，所述控制單元4〇可包含一電源 供應器41及-控制電路42。該電源供應器41電性連接 該控制電路42，該控制電路42分別電性連接該數個散熱 風扇30，·藉此，該控制電路42可較為容易控制各該散熱 風扇30之細_，_祕錄社擴紐。 請參照第9圖所示，所述控制單元4〇可包含一電源 供應器41及-控制電路.該電源供應器41電性連接 該控制電路42，該控制電路42較佳設置於其中一散熱風 扇30内部，且該控制電路42分__# # 扇3〇;藉此，即可達到節省空間之優點。 敢… 所述基板10較佳可設置一感溫元件（未緣示），該 感溫讀電性連接該控制單元。藉此，可利用該感溫元件 —12 — 快速感測該發光元件13之溫度，以便該控制單元4〇可快 速控制各該散熱風扇3〇提供更為適當之散熱機制。 請參照第10圖所示，本發明燈具亦可直接藉由另一 實施方式之導流件20’結合該數個散熱風扇3〇及該控制 單元40，以便該控制單元4〇可控制各該散熱風扇3〇之 作動時機及運作方式，而同樣可提供該燈具具有數種散熱 機制，用以簡化整體結構複雜度。更詳言之，該導流件 2〇,係為如圖所示之散熱器，該散熱器由數個鰭片25所 構成各該鰭片25之間形成一氣流調節空間21 ,該數個 散熱風扇30則分別結合該導流件2〇,之各鰭片25二端； ，此，各該鰭片25可用以傳導該發光元件13所產生之熱 置並配合各該散熱風扇30驅使氣流進入該氣流調節空 間21，以利於進行熱交換作用後，再藉由各該散熱風扇 3〇將氣流導至外界空間，進而可達到預定之散熱效果。 如上所述，本發明燈具確實可利用該控制單元4〇及 該數個散熱風扇3〇之結構組合·，以提供數種不同散熱機 制，藉此提供該基板10之發光元件13較為完善之散熱功 月b，並兼可達到更為均衡的輔助散熱作用，以有效提升燈 具之使用壽命。 雖…丨本發明已利用上述較佳實施例揭示，然其並非 用以限定本㈣，任何熟冑此技藝者在不麟本發明之精 神和範圍之内，相對上述實施例進行各種更動絲改仍屬 本發明所_之麟範，，因此本發明德護 附之申請專概_敎者鱗。 【圓式簡單說明】 第1圖：習知燈具的組合剖視圖。 第-2圖：本發明燈具的立體分解圖。 第3圖：本發明燈具之散熱風扇交替作動的使用狀態 參考圖（一）。 第4圖：本發明燈具之散熱風扇交替作動的使用狀態 參考圖（二）。 第5圖：本發明燈具之散熱風扇同時作動的使用狀態 參考圖。 第6圖：本發明燈具之散熱風扇在進行除塵作業時的 使用狀態參考圖。 第7圖·本發明燈具之導流件具有散熱鰭片時的立體 分解圖。 第8圖：本發明燈具之控制單元的結構方塊示意圖。 第9圖：本發明燈具之控制單元的另一種結構方塊示 意圖。 第10圖：本發明燈具另一實施方式之立體分解圖。 【主要元件符號說明】 〔本發明〕 10基板 11第一表面 12第二表面 13發光元件 2〇、20’導流件1373590 VI. Description of the Invention: [Technical Field] The present invention relates to a luminaire, in particular, a slewing and slewing operation, and a luminaire capable of controlling a number mechanism. There are several different types of heat dissipation [Prior Art] It is known that the lamp with heat dissipation module 1, M339636 "LED lamp (10) structure, the Republic of China announcement double ",,,. (1)" new patent. The lamp body has a lamp body, the lamp body μ ν, ~ and σ not δ δ has a plurality of light-emitting diodes and a =, and a plurality of heat sinks are protruded from the lamp body. #这 When the light-emitting diode generates heat due to energization, it can help the heat generated by the light-emitting diode to spread rapidly. " , and the heat sink of the conventional lamp can absorb the heat generated by each of the light-emitting diodes after being energized. However, since there is no design of the auxiliary heat dissipation around the heat sink, the heat can not be quickly exchanged after the heat is absorbed by the recording shaft; therefore, it is still easy to cause the heat sink to absorb the heat generated by each of the light-emitting diodes. This causes the heat sink to accumulate heat and other problems, which in turn seriously affects the overall heat dissipation effect of the lamp, thereby reducing the service life of the lamp. In order to solve the disadvantages of the conventional lamp, as shown in FIG. 1 , another conventional lamp 9 is disclosed. The lamp 9 has a substrate 91 , and one side surface of the substrate 91 is provided with a plurality of light-emitting diodes 911 . The other side surface of the substrate 91 is further provided with a heat dissipation tab 92; the two ends of the heat dissipation fin 92 are a first end 921 and a second end 922 respectively; and the first end 921 of the heat dissipation fin 92 A heat dissipation fan 93 is provided to form a heat dissipation module. Therefore, the heat dissipation fins 92 can quickly absorb the heat generated by the light-emitting diodes 911 due to the power supply, and simultaneously use the heat dissipation fan 93 to drive the airflow through the heat dissipation fins 92, so that the heat dissipation fins 92 can be quickly The heat exchange with the airflow enhances the overall heat dissipation of the heat dissipation module. Referring to the first β, the heat dissipation fan 93 is disposed only at the first end 921 of the heat dissipation fin 92. Therefore, the heat dissipation fan 93 can provide the heat dissipation effect of the heat dissipation fin 92. The area adjacent to the first end 921 of the heat dissipation fin 92 is preferably that the area of the second end 922 of the heat dissipation fin 92 is far away from the heat dissipation fan 93, so the heat dissipation effect is poor. In addition, after the long-term use of the conventional lamp 9, it is easy to accumulate excessive dust in the heat dissipation fin 92. Since the lamp 9 does not have a dust removal mechanism, the heat dissipation effect of the heat dissipation fan 93 is relatively affected. More importantly, when the cooling fan 93 is operated for a long time, the heat dissipation fan 93 is easily damaged; or when the light emitting diode 911 is overheated, the single heat dissipation fan 93 cannot effectively reduce the light emitting diode. The temperature of the body 911. In general, the heat-dissipating fan 93 of the conventional lamp 9 fails to provide a better and balanced heat dissipation function, so that it cannot be used to improve the life of the lamp. In order to improve the problems of the conventional lamp 9 described above, or the manufacturer has thought about more heat-dissipating fans 93 on the heat-dissipating plate 92. However, when several cooling fans 93 are operated at the same time, although the overall heat dissipation effect can be temporarily improved, since there is no good structural design and control mechanism, it is still easy when several cooling fans 93 are operated for a long time at the same time. The heat dissipation fan 93 is damaged. In addition, even if a plurality of heat dissipation fans 1373590 93' are provided, the heat dissipation fins are likely to accumulate dust and affect the heat dissipation effect, so that improvement is still necessary. SUMMARY OF THE INVENTION The present invention provides a luminaire for solving the problems of poor heat dissipation of the heat dissipation module of the conventional lamp, and is the main object of the invention. Another object of the present invention is to provide a luminaire that does not require a single cooling fan to be ridden and can achieve a heat dissipation effect. A further object of the invention is to provide a luminaire having a dust removal function. In order to achieve the foregoing object, the technical means and the functions achievable by the technical method include: a lamp comprising at least a substrate, a flow guiding member, a plurality of heat dissipating fans and a control unit. The substrate has a first surface and a second surface, the first surface is provided with at least one light-emitting element; the flow guide is combined with the substrate, and an airflow adjustment space is formed between the flow guide and the second surface of the substrate And the air guiding member has a plurality of air guiding openings connected to the air conditioning space; the plurality of heat dissipating fans are respectively coupled to the plurality of air guiding ports of the flow guiding member; the control unit is electrically connected to the plurality of cooling fans. 'The control unit controls the timing and operation mode of each of the cooling fans, so that the lamp has several kinds of heat dissipation mechanisms to achieve the effects of improving the heat dissipation effect, having the dust removing function and prolonging the service life of the cooling fan. At least one vent hole is provided, and the vent hole communicates with the airflow adjusting space, thereby making the turbulent guiding of each of the heat dissipating fans smoother. 6 - the number of air guiding ports of the baffle is two, Two air guiding openings are respectively formed at opposite ends of the flow guiding member, thereby providing a more balanced auxiliary heat dissipation effect. The flow guiding member has a plurality of heat dissipating fins, each of which The heat fin is located in the airflow adjusting space, thereby achieving the effect of improving the heat conduction effect. The control unit includes a power supply and a control circuit, and the power supply is electrically connected to the control circuit, and the control circuit respectively Electrically connecting the plurality of cooling fans, thereby providing better expandability. The control circuit is disposed inside one of the cooling fans, thereby achieving space saving effect. The flow guiding member is a shell a cover having a plurality of side plates surrounding the frame, and a top plate coupled to each of the side plates, the side plates of the flow guiding member being coupled to the outer peripheral edge of the substrate, the airflow adjusting space being formed on the top plate and the substrate Between the second surfaces, each of the air guiding openings is formed on the top plate. Thereby, a wider airflow adjustment between the flow guiding member and the substrate can be formed, so that the control unit can more easily control each of the cooling fans to reach Several kinds of non-same heat dissipation mechanism I. — -....... _...... _ ....... The substrate is provided with a temperature sensing element, and the temperature sensing element is electrically connected to the Control unit. The control unit can immediately sense the temperature of the light-emitting element through the temperature sensing element to provide a suitable heat dissipation mechanism. A lamp includes a substrate, a flow guiding member, a plurality of cooling fans, and a control unit. Having a first surface and a second surface, the first surface is provided with at least one light-emitting element; the flow guide is coupled to the second surface of the substrate; the plurality of heat-dissipating fans respectively are coupled to the flow guide; the control unit is electrically Sexual connection bribe _ fan. In this way, Chi Xianyuan can control the timing and operation mode of the festival. 'There are several kinds of heat dissipation for the luminaire*5. It has the material cooling county, the dust function and the extended dispersion: the fine life of the fan The material structure can be reduced and the overall structure complexity can be reduced. [Embodiment] Other objects, features and advantages of the present invention will become more apparent and obvious. The following is a detailed description of the following: As shown in FIG. 2, the present invention includes at least a __substrate 1 〇, a flow guiding member 20, a plurality of cooling fans 3A, and a control unit 4 (the substrate 10 has a Lighting function The flow guiding member 20 can be coupled to the substrate 10; the plurality of diffusing fans 30 are combined with the age of 20, so that the through-flow deflector 20 can dissipate heat for the substrate 10; the control unit 4 is electrically connected to each of the cooling fans. 30. It is used to control the timing and operation mode of each of the cooling fans, and provides several different heat dissipation mechanisms. The two opposite side surfaces of the substrate 10 are respectively a first surface u and a second surface 12 1 . The first surface η is provided with a plurality of light emitting elements . 13 (only a single light emitting element 13 can be disposed according to actual needs). The light-emitting element 13 can be a light-emitting diode (LED), a light bulb or other component having a light-emitting function. The flow guiding member 20 is preferably made of a heat conductive material, and the flow guiding member 20 is coupled to the substrate 10 such that a gap between the flow guiding member 2 and the second surface 12 of the substrate 1 can be formed. The air flow adjusting space 21; in addition, the air guiding member 2 has a plurality of air guiding σ 22, and each of the air guiding ports 22 communicates with the air flow adjusting space 21. / The plurality of cooling fans 30 may be a blower fan or an axial flow type, and an axial flow fan as shown in the figure is preferably used. The plurality of cooling fans 3 具有 respectively have two air guiding portions 3 - wherein the air guiding portion 31 provides a human wind function, and the other air guiding portion 31 provides an air blowing function. The plurality of cooling fans 3 are respectively connected. The air guiding portion 22 of the flow guiding member 20 is directed toward the air conditioning space 21, and the other air guiding portion 31 faces the external space. The control unit 40 is electrically connected to the plurality of cooling fans 3 〇 for controlling the timing and operation mode of each of the cooling fans 30. In the actual use of the lamp of the present invention, the light-emitting element 13 of the substrate can be projected after being energized, and the heat generated by each of the light-emitting elements 13 can be conducted to the airflow adjusting space 21 of the flow guiding member 20; Each of the cooling fans 30 can be used to drive the airflow into the airflow adjusting space 21, so as to facilitate the hot parenting, and then the airflow is guided to the external space by the cooling fans, thereby achieving a predetermined heat dissipation effect. - More details - '- By the structural features of the disclosure, the lamp of the present invention can be combined with the structure of each of the cooling fans 3 to achieve several heat dissipation mechanisms and many features as follows: 1. Referring to Figures 3 and 4, it is assumed that the light-emitting elements 13 of the substrate 1 are not overheated during actual operation, and the control unit can control each of the heat-dissipating fans 30 to alternately operate, so that the heat-dissipating fans 3 There is no need to operate for a long time to improve overall service life. As shown in FIG. 3, it is revealed that the control unit 40 controls only one of the cooling fans 3 to operate in advance, and the remaining cooling fans 30 temporarily stop operating; and, as shown in FIG. 4, after a predetermined time (depending on the user) The actual demand sets the length of the time. Then, the control unit 40 controls the previously operated cooling fan 3 to stop operating, and then starts to operate by controlling the other cooling fans 3〇. Thereby, each of the heat dissipating fans 30 can be alternately operated, and the single heat dissipating wind can be effectively prevented from being damaged for a long time by operating under the condition that the predetermined heat dissipating effect can still be achieved. 2. Please refer to FIG. 5, assuming that the light-emitting element 13 of the substrate 1 is easily over-scaled in the actual operation process, the control unit 4Q can control each of the heat-dissipating fans 30 to simultaneously perform heat dissipation. It is more effective to avoid the light-emitting element 13 _ heat and money, thereby providing a better heat dissipation effect. 3. Referring to FIG. 6, if the air guiding port 22 of the flow guiding member 20 accumulates excessive dust, the control unit 4 can control each of the deflating fans 30 to rotate forward or reverse. In addition to the positive cooling fan, the cooling fan can be used to provide heat dissipation. It can also be adjusted as shown in the figure by controlling each of the diffusing winds 2 3=reverse actuation and matching the fan blade design of the axial fan. The airflow inside the lang space 21 is reversed, and then flows into the _ between the passages 22, and when the airflow passes through the air vents of the air vents, it is known that the wind shovel 22 is not formed. The second y effectively enhances the overall heat dissipation effect, in order to extend the use of the lamp 3 of the present invention, and assumes that when the thief fan 3() 4〇 is still controllable, the county is satisfied with the larva 3Q_ for 1373590. According to the structural design concept and the operating principle of the above-mentioned lamp of the present invention, the lamp of the present invention can further change the other (four) structural features as described below, so that the function of the lamp of the present invention is closer to perfection, wherein: 2, 3 and 4, the number of air guiding openings 22 of the flow guiding member 2 is preferably The two air guides σ 22 can be respectively formed at opposite ends of the flow guide 2G; in addition, the number of the heat dissipation fan buckles can also be two, and the two heat dissipation fans 3 分别 are respectively combined The two air guiding ports 22 are. Therefore, when the control unit 4 〇 controls the two cooling fans to operate at the same time, the heat dissipation fan 3 〇 can provide the light-emitting component 13 of the substrate 1G through the air conditioning space 21 to further reduce the heat dissipation of the lion to ensure the location The light-emitting element 13 of the service board 10 opposite to the two ends can also obtain a better heat dissipation effect through the two heat-dissipating fans 30. Referring to FIGS. 2, 3 and 4, the flow guiding member 20 is mainly used for connecting the substrate 10 and the plurality of fans 3 for the plurality of fans 30 to pass through the flow guiding member 2 The light-emitting element 13 of the substrate 1 is dissipated. Therefore, the flow guide 20 can select any component having a function described in detail, for example, "the flow guide 2: 〇- can use a cover or a heat sink fin, etc. For example, in the embodiment shown, the flow guide 2 is a cover having a plurality of side plates (not labeled) surrounding the frame, and a combination a top plate (not shown) of each of the side plates; the flow guiding member 20 can be combined with the outer peripheral edge of the substrate by using the side plates, so that the air conditioning space 21 can be formed between the top plate and the second surface 12 of the substrate Preferably, each of the air guiding openings 22 can be formed on the top plate; thereby, a wider airflow adjustment space can be formed between the flow guiding member 20 and the substrate 1 - 11373590 = 21 ' so that the control is earlier. 4. It is easier to control each of the cooling fans % to form several different heat dissipation mechanisms. Referring to FIG. 5, the flow guiding member 20 is preferably further provided with a through hole 23, and the vent hole 23 communicates with the airflow adjusting space 21, and the number of the vent holes 23 may be one or more. Therefore, when the control unit 〇 controls each of the cooling fans 30 to operate at the same time, each of the air guiding portions 31 can be set as the inlet air, and the venting holes 23 can set the air blowing function, so that the cooling fans 3G are The airflow guide is smoother. Please refer to Figure 7 for the description of the flow guide 2, preferably having a plurality of ... Han > 1 24, and the money fin 24 is located in the airflow adjustment space 21 ^; The heat conduction of each of the heat dissipating fins 24 causes the heat generated by each of the light 7L members 13 to be more viscously fed to the air flow adjusting space 2 of the flow guiding member 2 to achieve better heat conduction. The control unit 4A can include a power supply 41 and a control circuit 42. The power supply 41 is electrically connected to the control circuit 42, and the control circuit 42 is electrically connected. The plurality of cooling fans 30, thereby making it easier for the control circuit 42 to control each of the cooling fans 30 As shown in FIG. 9, the control unit 4A can include a power supply 41 and a control circuit. The power supply 41 is electrically connected to the control circuit 42. The control circuit 42 is preferably disposed inside one of the heat dissipation fans 30, and the control circuit 42 is divided into __##fans 3〇; thereby, the space saving advantage can be achieved. a temperature sensing element (not shown), the temperature sensing is electrically connected to the control unit. Thereby, the temperature sensing element 12 can be used to quickly sense the temperature of the light emitting element 13 so that the control unit 4 can be quickly Controlling each of the cooling fans 3 provides a more appropriate heat dissipation mechanism. Referring to FIG. 10, the light fixture of the present invention can also directly combine the plurality of heat dissipation fans 3 and the control unit 40 by the flow guide 20' of another embodiment, so that the control unit 4 can control each of the The cooling fan 3 is activated and operated, and the luminaire has several heat dissipation mechanisms to simplify the overall structural complexity. More specifically, the flow guiding member 2 is a heat sink as shown in the figure, and the heat sink is formed by a plurality of fins 25 to form an airflow adjusting space 21 between the fins 25, the plurality of The heat dissipating fan 30 is respectively coupled to the flow guiding member 2, and the fins 25 are at two ends. The fins 25 can be used to conduct the heat generated by the light-emitting element 13 and cooperate with the heat-dissipating fan 30 to drive the airflow. After entering the air conditioning space 21, in order to facilitate the heat exchange, the airflow is guided to the external space by the heat dissipating fan 3, thereby achieving a predetermined heat dissipation effect. As described above, the luminaire of the present invention can utilize the combination of the control unit 4 and the plurality of heat dissipating fans 3 to provide several different heat dissipation mechanisms, thereby providing a relatively perfect heat dissipation of the illuminating elements 13 of the substrate 10. Power month b, and can achieve a more balanced auxiliary heat dissipation, in order to effectively improve the life of the lamp. Although the present invention has been disclosed by the above-described preferred embodiments, it is not intended to limit the present invention. Any skilled person skilled in the art can make various changes to the above embodiments without departing from the spirit and scope of the present invention. It is still the Lin Fan of the present invention, and therefore the application of the invention is specially designed. [Circular Simple Description] Figure 1: A cross-sectional view of a combination of conventional lamps. Figure-2: An exploded perspective view of the luminaire of the present invention. Fig. 3: The use state of the cooling fan of the lamp of the present invention alternately operates. Refer to Fig. 1 (1). Fig. 4: The use state of the cooling fan of the lamp of the present invention alternately operates. Refer to Fig. 2 (2). Fig. 5 is a view showing the state of use of the cooling fan of the lamp of the present invention at the same time. Fig. 6 is a view showing the state of use of the heat-dissipating fan of the lamp of the present invention when performing a dust-removing operation. Fig. 7 is a perspective exploded view of the deflector of the lamp of the present invention having fins. Figure 8 is a block diagram showing the structure of the control unit of the lamp of the present invention. Figure 9 is a block diagram showing another structural block of the control unit of the lamp of the present invention. Figure 10 is a perspective exploded view of another embodiment of the lamp of the present invention. [Description of main component symbols] [Invention] 10 substrate 11 first surface 12 second surface 13 light-emitting element 2〇, 20' flow guiding member