1252900 九、發明說明： 【發明所屬之技術領域】 特別是指一種採用發 本發明是有關於一種發光裝置 光二極體作為光源之發光裝置。 【先前技術】 二極體之發光功率越高，發光二極體作功所產生之自體溫 度也就越高，而此高溫現象反而會降低發光二極體的使用 壽命。因此，為避免發光二極體之自體高溫影響其自身使 用壽命，在開發高發光功率之發光二極體頭燈的同時，亦 必須開發可有效且快速降低發光二極體溫度之散熱系統。 【發明内容】 由於發光二極體製程的不斷改良，發光二極體之發光 功率已足以被應用於一般之照明設備中，目前市面上最常 見的’便是採用發光二極體作為發光源之手電筒等簡單昭 明設備。近年來，發光二極體之另—主要發展目標，則是 在於使高發光功率之發光二極體可直接應用於—般交通工 具的主要照明設備上，例如汽機車之頭燈等。但隨著發光 因此’本發明之目的，即在提供一種可有效降低發光 二極體溫度之發光裝置。 於是，本發明一種可有效降溫之發光裝置包含至少一 發光單元、一裝設在該發光單元下方之冷卻單元，及一 $ 散熱地固接在該冷卻單元下方之散熱座。該發光單元包括 /水平電路板，及一電連接地裝設在該電路板頂面之發光 二極體，而該冷卻單元包括一電熱致冷器，及一可隔熱地 1252900 包覆於該電熱致冷器周圍之隔熱體，該電熱致冷器是以其 一溫度較該發光二極體低之致冷面固接在該電路板底面， 而以溫度較該致冷面高之致熱面朝下固接於該散熱座上方 〇 藉由該電熱致冷器之致冷面的持續低溫特性，可快速 地將該發光二極體作功產生之高溫降低，而提高發光二極 體之使用壽命。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之一個較佳實施例的詳細說明中，將可 清楚的呈現。 如圖1〜3所示，本發明可有效降溫之發光裝置的較佳 實施例，適用於作為一般照明設備，例如汽機車、火車， 或飛機之照明燈。該發光裝置包含一水平設置之發光單元3 :-裝設在該發光單元3上方之透鏡4，—鎖固於該發光單 ^下方之水平導熱板5、„固接於該導熱板5底面之冷卻 單7L 6、-固接於該冷卻單元6下方之散熱座及一固接 於該散熱座7下方之風扇8。 該發光單元3包括—水平電路板31，及設置於該電路 板31頂面且分別與該電路板31電連接之—發光二極體32 ’與-導電端子座33，該導電端子座33可用以導接驅動發 光一極體3 2發光之電源。 該《板5是鎖固於該電路板31底面，且是由高 糸數之材料製成，因此該發光二極體32作功所產生之高溫 1252900 7迅速地經自料缝5往外料擴散。在本實施例中， ""導熱板5是由金屬鋼製成，但實施時不以此為限。 ” P單7L 6 &括一固定於該導熱板5底面之板狀電 熱致冷器（細職1咖e _Hng module) 61，及一包心 該電熱致冷器61外周面之隔熱體62。該電熱致冷器61具 有-朝上固接於該導熱板5底面之致冷面611，及一朝下之 致熱面612。該隔熱體62是由隔熱材料製成，例如泡棉或 陶莞纖維等，但實施時不以上述材料為限。 一、，在本實施例中所採用之電熱致冷器61是為一般市面上 經“吏用之半導體元件，經導電激發後，該致冷面6ιι的溫 度可迅速降低至室溫以下或攝氏零度以下，而該致熱面M2 的溫度則會相對上升至室通以上，且藉由控制激發電流之 大小，可凋控該致冷面6丨丨或致熱面6丨2之溫度變化，由於 忒電熱致冷器61之作功原理已為熟悉該項技術者所知悉， 在此不再加以詳述。 在本實施例中，是以該電熱致冷器61之致冷面611固 接於遠導熱板5底面，藉由該致冷面611之持續低溫特性， Q部ό亥發光二極體32傳導至該導熱板5之高溫，進而降低 該發光二極體32的溫度，同時藉由包覆於該電熱致冷器Μ 外周面之隔熱體62，避免該致熱面612所產生之高溫經由 空氣熱對流的方式，再傳導至該發光二極體32周圍。由於 邊致冷面611之溫度下降速率快且可低於〇它，因此，可經 由高導熱係數之導熱板5而使該發光二極體32的溫度迅速 下降，甚至降至室溫以下。 l2529〇〇 貫騎，亦可不設置該導熱板5，而直接將該電敎致产 61之致冷面611固接於該電路板職面。在本實施射 ，該電熱致冷器61頂面僅設置-發光單元3,但實施時， 电…致~杰6〗，而於該電熱致冷器6ι之致)人 面611同時設置多數發光單元3。 7 該散熱座7包括―固接於㈣熱致冷器之致 612的散熱基板71，及複數自該散熱基板71底面往下付 =隔延伸之散熱件72。在本實施例中，該等散熱件Μ是呈 間隔平行之直立板狀’但實施時，亦可為直立柱狀，且不 :上，為限。該散熱座7之散熱基板71可將該致熱面 生之尚溫傳導至該等散熱件72 i，藉以增加散熱面 檟。 ,該風扇8則是鎖固於該散熱座7之該等散熱件72末端 且了產生一往下吹之氣流，而將該等散熱件72間之孰空 氣帶走，可快速地將該電熱致冷器61之致熱面612產:的 達到降溫的效果，但實施時，該風扇8亦可裝 又；μ專放熱件72之侧邊，但不以此為限。 實施财，該發光單元3、該冷卻單元6之電熱致 “、1 ’及該風扇8是電連接於同—啟動農置（圖未示）， 二可被同時被啟動’因此，可於該發光二極體U作功的同 :立即且持續地進行降溫與散熱動作，但實施時不以上 式為限。另外’實施時，為了提高上述各散熱元 ^〜傳導效果，可於該電路板31、導熱板5、電熱致 及忒散熱座7之散熱基板7丨間分別塗上一層導熱 8 1252900 膠、(圖未示），使得各元件之接合面間可均勾地貼 南導熱與散熱效果。另一方面，每 ^ 動F詈之0 _狄w/ A也守，也可透過前述啟 動衣置之回鈿控制電路（圖未示）的 冷器61之致冷面611的溫度 〜遠電熱致 I侍邊發光二極體32 在一預定之溫度狀態，但不以此為限。 腹 2發明發光裝置使用時，可單獨一個使用， 相互串接使用，如圖4所干，p ☆ Q斤不即為四發光裝置串接使用之 情況。該等發光裝置可藉由分別带 用之 別包連接於兩兩發光裝置之 導電端子座33間的導線3〇 衣置之 明亮度，或是產生不同之照明效二=而可提高照 β双禾，但貫施時並 組接型態為限。 了I不以上述 另—=，發光裝置亦可再增設—中空殼座2， 5所不之狀態。該殼座2具有一環形圍壁21、—固接科 圍壁21底端之底壁22， 、以 道及自5亥底壁22往下突伸並用以 V接電源之導電接頭23 ’且該圍壁 定出-容置空間20。該發光…、2相配合界 4先早兀3、透鏡4、導熱板5、冷 :早兀6:及繼7便是上、下疊置組裳於該容置空間 0中，並猎由該散熱座7之該等散熱件72末端與該底辟 該風扇8是嵌她圍壁21上，並可將形成於 :4放，'、、件72間之熱氣排出該容置空間20外。該發光抑 電’、、、致~器61，及該風扇8皆是與該導電接頭23電 連接，而可被該導電接頭23導接之㈣驅動。、 綜合上述電熱致冷器6之致冷面611的持續低溫特性， 可快速地冷卻該發光二極體32作功產生之高溫，而降低令 1252900 發先二極體32之溫度，進而使該發光二極體32不會因自 體皿度過高而縮短其使用壽命。該散熱座7與風扇8之执 置’則可加速該電熱致冷器61之致熱面612 -發光裳置可維持在一較低溫狀態。因此，確 發明之目的。 ' △惟以上所述者，僅為本發明之-較佳實施例而已，當 不，以此限；t本發明實施之範圍’即大凡依本發明申請: 利範圍及發明說明内容所作之簡單的等效變化與修飾:皆 仍屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1是本發明可有效降溫之發光装置的一較佳實施例 的立體組合圖； 圖2是圖1之立體分解圖； 圖3是圖1的局部剖面側視圖； 圖4是四發光裝置相互串接使用之俯視圖；及 、圖5是一發光裝置組裝於一中空殼座内之局部剖面側 視圖。 10 1252900 主要元件符號說明 .......…殼座 2 導熱板 20 *** …·容置空間 6……… …冷卻單元 21…‘ 1…圍壁 6 1…" …電熱致冷器 22…… …，底壁 6 1 1…… …致冷面 23…- —導電接頭 612 …* …致熱面 3…… …♦發光單元 62…" >…隔熱體 30… ……導線 7 …散熱座 3 1*… 電路板 7 … 4…散熱基板 3 2*"* …《發光二極體 7 2 * 散熱件 3 3"" …《導電端子座 *…風扇 /| * ψ * ψ < …"透鏡 111252900 IX. Description of the invention: [Technical field to which the invention pertains] In particular, it is a light-emitting device that uses a light-emitting device as a light source. [Prior Art] The higher the luminous power of the diode, the higher the self-heating temperature produced by the light-emitting diode, and the high temperature phenomenon will lower the service life of the light-emitting diode. Therefore, in order to prevent the self-heating life of the light-emitting diode from affecting its own service life, it is necessary to develop a heat-dissipating system capable of effectively and rapidly reducing the temperature of the light-emitting diode while developing a light-emitting diode head lamp with high light-emitting power. SUMMARY OF THE INVENTION Due to the continuous improvement of the light-emitting diode process, the luminous power of the light-emitting diode is sufficient for use in general lighting equipment. Currently, the most common type on the market is to use a light-emitting diode as a light source. Simple Zhaoming equipment such as flashlights. In recent years, the other main development goal of the light-emitting diodes is that the light-emitting diodes with high luminous power can be directly applied to the main lighting equipment of general traffic tools, such as headlights of automobile vehicles. However, with the illuminating, it is an object of the present invention to provide a light-emitting device which can effectively lower the temperature of the light-emitting diode. Therefore, an illuminating device capable of effectively reducing temperature comprises at least one illuminating unit, a cooling unit mounted under the illuminating unit, and a heat sink fixedly secured to the lower side of the cooling unit. The light emitting unit includes a horizontal circuit board, and a light emitting diode electrically connected to the top surface of the circuit board, and the cooling unit includes an electric heating refrigerator, and an insulating layer 1252900 is coated thereon. a heat insulator around the electrothermal refrigerator, the electrothermal cooler is fixed on the bottom surface of the circuit board with a lower cooling surface than the light emitting diode, and the temperature is higher than the cooling surface The hot surface is fixed downwardly above the heat sink, and the low temperature characteristic of the cooling surface of the electrothermal cooler can quickly reduce the high temperature generated by the work of the light emitting diode, thereby improving the light emitting diode. The service life. The above and other technical contents, features, and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments. As shown in Figures 1-3, a preferred embodiment of the illumination device of the present invention which is effective in cooling is suitable for use as a general illumination device, such as a locomotive, train, or aircraft illumination. The illuminating device comprises a horizontally arranged illuminating unit 3: a lens 4 mounted above the illuminating unit 3, a horizontal heat conducting plate 5 fixed under the illuminating unit, „ fixed to the bottom surface of the heat conducting plate 5 The cooling unit 7L 6 is fixed to the heat sink below the cooling unit 6 and the fan 8 fixed under the heat sink 7. The light unit 3 includes a horizontal circuit board 31 and is disposed on the top of the circuit board 31. The light-emitting diode 32' and the conductive terminal block 33 are electrically connected to the circuit board 31, and the conductive terminal block 33 can be used to guide the power supply for driving the light-emitting body 3 2 to emit light. It is locked on the bottom surface of the circuit board 31 and is made of a material having a high number of turns. Therefore, the high temperature 1252900 generated by the work of the light-emitting diodes 32 is rapidly diffused from the material slit 5 to the outer material. Medium, "" The heat conducting plate 5 is made of metal steel, but it is not limited thereto. ”P single 7L 6 & includes a plate-shaped electrothermal refrigerator fixed to the bottom surface of the heat conducting plate 5 (fine The employee 1 e _Hng module 61, and a heat insulator 62 covering the outer peripheral surface of the electric refrigerator 61. The electrothermal cooler 61 has a cooling surface 611 which is fixed upward to the bottom surface of the heat conducting plate 5, and a heating surface 612 which faces downward. The heat insulator 62 is made of a heat insulating material such as foam or ceramic fiber, but is not limited to the above materials. 1. The electrothermal refrigerator 61 used in the embodiment is a semiconductor component which is generally used in the market, and the temperature of the cooling surface 6 ιι can be rapidly lowered to below room temperature or Celsius after being electrically excited. Below zero, the temperature of the heating surface M2 will rise relatively above the chamber, and by controlling the magnitude of the excitation current, the temperature change of the cooling surface 6 or the heating surface 6丨2 can be controlled. Since the work principle of the crucible electric cooler 61 is known to those skilled in the art, it will not be described in detail herein. In this embodiment, the cooling surface 611 of the electrothermal refrigerator 61 is fixed. On the bottom surface of the far heat conducting plate 5, by the continuous low temperature characteristic of the cooling surface 611, the Q portion of the light emitting diode 32 is conducted to the high temperature of the heat conducting plate 5, thereby lowering the temperature of the light emitting diode 32, and at the same time The heat insulator 62 coated on the outer peripheral surface of the electrothermal cooler prevents the high temperature generated by the heating surface 612 from being convected by air, and is conducted to the periphery of the light-emitting diode 32. The surface 611 has a temperature drop rate that is fast and can be lower than that of the surface 611, so The heat conduction plate 5 having a high thermal conductivity causes the temperature of the light-emitting diode 32 to rapidly drop, and even falls below room temperature. l2529 〇〇 ,, or the heat-conducting plate 5 is not provided, and the electric raft is directly produced. The cold surface 611 is fixed to the circuit board face. In the present embodiment, the top surface of the electrothermal cooler 61 is only provided with the light-emitting unit 3, but when implemented, the electric...to the 6th, and the electric heat The heat sink 6 is provided with a plurality of light-emitting units 3 at the same time. 7 The heat sink 7 includes a heat-dissipating substrate 71 fixed to the (four) thermal refrigerator 612, and a plurality of heat-dissipating substrates 71 from the bottom surface of the heat-dissipating substrate 71 In the present embodiment, the heat dissipating members are in the form of upright plates having parallel intervals. However, in practice, they may be in the form of upright columns, and are not limited to. The heat dissipating substrate 71 of the seat 7 can conduct the heat generating surface to the heat dissipating members 72 i to increase the heat dissipating surface. The fan 8 is the heat dissipating members 72 locked to the heat dissipating base 7 . At the end, a downward blowing air flow is generated, and the air between the heat dissipating members 72 is taken away, so that the electric power can be quickly The heating surface 612 of the refrigerator 61 produces the effect of cooling down, but in practice, the fan 8 can also be mounted; the side of the μ heat releasing member 72, but not limited thereto. The unit 3, the electric heating of the cooling unit 6, "1" and the fan 8 are electrically connected to the same - starting farm (not shown), and the second can be activated simultaneously. Therefore, the LED can be used in the LED The same work: the cooling and cooling actions are carried out immediately and continuously, but the implementation is not limited to the above formula. In addition, in order to improve the above-mentioned heat dissipation element to the conduction effect, a heat conduction layer of 8 1252900 glue may be applied between the circuit board 31, the heat conduction plate 5, the heat-generating substrate 7 and the heat dissipation substrate 7 of the heat dissipation seat 7 ( The figure is not shown, so that the heat conduction and heat dissipation effects can be adhered to the joint surfaces of the components. On the other hand, the 0 _ di w / A of each 詈 F 也 , , , , , , , , , , , , , , , 〜 〜 〜 〜 611 611 611 611 611 611 611 611 611 611 611 611 611 611 611 611 611 611 611 611 611 The light-emitting diode 32 is in a predetermined temperature state, but is not limited thereto. When the illuminating device of the invention is used, it can be used alone and in series with each other, as shown in Fig. 4, p ☆ Q jin is not the case where the four illuminating devices are used in series. The light-emitting devices can be connected to the brightness of the wires 3 between the conductive terminal blocks 33 of the two light-emitting devices by different packages, or can generate different illumination effects. Wo, but the application mode is limited. I don't use the above -=, the light-emitting device can be added again - the hollow shell 2, 5 is not in the state. The housing 2 has an annular surrounding wall 21, a bottom wall 22 of the bottom end of the fastening wall 21, and a conductive joint 23' which protrudes downward from the 5th bottom wall 22 and is connected to the power supply. The surrounding wall defines an accommodation space 20. The illuminating ..., 2 phase matching boundary 4 first early 兀 3, lens 4, heat conducting plate 5, cold: early 兀 6: and then 7 is the upper and lower overlapping group in the accommodating space 0, and hunting The end of the heat dissipating member 72 of the heat sink 7 and the bottom of the fan 8 are embedded in the surrounding wall 21, and the hot air formed between the container and the member 72 can be discharged outside the accommodating space 20 . The light-suppressing device, the device 61, and the fan 8 are electrically connected to the conductive connector 23 and can be driven by the conductive connector 23 to drive (4). The continuous low temperature characteristic of the cooling surface 611 of the electrothermal cooler 6 can quickly cool the high temperature generated by the LED 32, and lower the temperature of the first and second diodes 322, thereby making the The light-emitting diode 32 does not shorten its service life due to the high degree of self-contained body. The arrangement of the heat sink 7 and the fan 8 accelerates the heating surface 612 of the electrothermal cooler 61 - the illuminating skirt can be maintained at a lower temperature state. Therefore, the purpose of the invention is confirmed. The above is only the preferred embodiment of the present invention, and is not limited thereto; t is the scope of the present invention's application of the present invention: the scope of the invention and the simplicity of the description of the invention Equivalent variations and modifications: are still within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective assembled view of a preferred embodiment of a light-emitting device that can effectively cool down; FIG. 2 is an exploded perspective view of FIG. 1; FIG. 3 is a partial cross-sectional side view of FIG. 4 is a plan view in which four light-emitting devices are used in series with each other; and FIG. 5 is a partial cross-sectional side view of a light-emitting device assembled in a hollow housing. 10 1252900 Main component symbol description..........Shell 2 Thermal plate 20 *** ...·Receiving space 6......Cooling unit 21...'1...Wall 6 1..." The cooler 22 ... ..., the bottom wall 6 1 1 ... ... the cooling surface 23 ... - the conductive joint 612 ... * ... the heating surface 3 ... ... ♦ the light unit 62 ... "> ... the insulator 30... ... wire 7 ... heat sink 3 1 * ... circuit board 7 ... 4 ... heat sink substrate 3 2 * " * ... "lighting diode 7 2 * heat sink 3 3 "" ... "conductive terminal block * ... fan / | * ψ * ψ <..."Lens 11