!253897 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種散熱構造，特別是一種透過冷卻氣流用以對使用 鬲壓汞燈之橢球燈提供冷卻服務的散熱構造。 【先前技術】 使用南壓汞燈(ultra-high pressure discharge lamp，UHP)的橢球燈由於具 備鬲売度和咼輸出流明度(luminance)的優異功能，普遍被應用於例如投影機 或是光學儀器之中作為主要的發光源；一般而言，橢球燈基本上係由一半 橢球形的反射罩10以及燈管20(bumer)所組成(見「第丨，2圖」），其中反射 罩10面向橢圓形焦點的一側具有鍍膜面U (係由高反射材料鍍膜形成）； 而义豆| 20 貝！為種南壓水燈(uitra-High Pressure discharge lamp，UHP)，其 包括有幾個主要的部份，分別為内部充填有汞及惰性氣體 ，經由弧光放電 後，產生高壓(約為180〜250 atm·)的燈泡21(bulb)，位於燈泡21内的兩個金 屬％極22七22b(通常為鎢電極），這兩個電極似和2此分別連結有一金屬 貝（通常為鉬)的前鉑片23(frontfoil)和一後鉑片24(backfoil)，另有一前電極 =線（leading wire) 25在一前接點251(tip wire)與前翻片23連接用以供應 私力，岫述的燈泡21的兩極間距，設於半橢球形反射罩1〇内的第一個焦 ”、、占位置，而在第二焦點處則設有一積分柱26(111把既站以1^^)，由燈泡21放 =出的光線其中大部份會被鍍膜面u反射至積分柱26，透過積分柱26使 聚焦於第二個焦點處的光線均勻化。 旧燈泡21係由非結晶石英玻璃製成，其耐受溫度約高於13〇〇它，過高的 :度會使燈泡的材質轉為結晶石英玻璃，進而降低玻璃的透光度，導致 燈泡21㈤溫度昇高，這樣的現像會使燈泡21產生變形，並且使燈泡a的 壁面變薄最後爆裂；燈泡21的工作溫度約在85〇〜95〇它為佳，若低於此一 溫度，由於内部汞的循環不佳也會使得燈泡^逐漸變黑，仍然會有爆裂的 危險，所崎泡的溫度_極為重要，如果溫度稍⑽會造成埶應力 =不柄’甚至於造成燈泡21的爆_壞一般而言係依據兩個測溫點燈 心頂端2ll(bulb top)和燈泡底端2】2(bulb _—的溫度值來判斷盆工作、、设 度是否落於適合範圍。除此之外，在前邮23和相鄰元件的電力連接點皿 1253897 例如刖接點2i)l(tlpwire)和第一接點252等處，也很容易受到高溫的影響而 產生氧化現象，進而影響高壓汞燈的使用壽命。 「所以尚壓汞燈的散熱效果便成為一項重要的問題，傳統的散熱方式(如 「第2圖」所示)利用一種氣流喷嘴30(blower duct)將散熱用的氣流導向需 要散熱的熱點〇1吭8口〇〇，這些熱點包括：燈泡頂點211(131111^〇13)，以及前鉑 片23和相郝元件的電力連接點，例如前接點…丨代)和第一接點 等處，為了避免阻擋到鍍膜面„所反射的反射光，氣流喷嘴3〇被設於反 射罩10的外圍（特別是沿著鍍膜面n邊緣沿著出光方面的直線連線 lme 1) 口此不會衫響到積分柱26的收光；否則氣流喷嘴將會阻擔到鑛 膜面li所反射的反射光，而影響系統的光學效率。 散熱用的氣流係由離心扇4〇(bl〇wer)所供應，但因為離心扇4〇吹出的 氣流壬分散狀，必須由氣流喷嘴3〇收集，以便更有效率地對燈管中的 -些熱點進彳了散熱冷卻，理論上，當氣流喷嘴3G愈接近熱點，則散熱效果 愈佳，但由於光學設計上，«將更多減射罩1〇射出的光集光於積分柱 内，因此，不希望有任何的物件擋在燈管2〇出光口，故習知技術中的氣流 喷嘴30的出風口往往位於反射罩1〇的外側（如「第3圖」所示）。 由於氣流喷嘴30前端出風口處與熱點過遠，會造成吹出來的氣流，往 往無法涵蓋或集中於整個燈管2〇。為了解決燈泡的散熱問題，往往需要增 加離心扇40的氣缝，但是在高瓦數（如·w社）的投影機内，離心 扇40對系、、充的木9貝獻度往往比轴流扇高，所以增加離心扇如的氣流量， 不但會增加系統的噪音，提高的轉速也會影響離心扇4〇的壽命。 另外，習知的氣流喷嘴30與橢球燈為分離設置，所以，氣流喷嘴3〇 與橢球燈間會魏流漏$的現象，造賴風的循環而影響散熱效果。 【發明内容】 θ ^ 本發明之-目的，係提供—種可以改善橢賴之冷卻效果的散熱構造。 本發明之另一目的，係提供橢球燈之散熱構造，利用將氣流喷嘴的出 口延伸至橢球燈的有效光束區邊緣，讓氣流噴嘴的出風口接近需要散熱的 熱點處，避免散熱氣流的發散以增加其散熱效果。 本發明之又-目的，係提供橢球燈之散熱構造，彻於氣流喷嘴之出 1253897 風口處設置導流板，以引導冷卻氣流以最接近的條件吹向熱點。 本發明之再一目的，係提供彳隋球燈之散熱構造，利用將氣流喷嘴之出 風口與反射罩相接設計，以利用反射罩作為氣流引導，達到防止氣流的發 散。 為達上述目的，本發明橢球燈之散熱構造，其揭露了一種可以改善橢 球燈之冷卻效果的散熱構造，透過重新設計氣流噴嘴(bl〇werduct)2形狀及 其設置位置的手段，將氣流噴嘴的出風口延伸至橢球燈的有效光束區邊 緣，讓氣流喷嘴的出風口最接近需要散熱的熱點處，避免喷嘴噴出的氣流 的發散，進而增加其散熱效果；而另一較佳的實施手段更包含在氣流喷嘴 之出風口處設置導流板，用以引導散熱氣流以最接近的條件吹向熱點，並 且配合反射罩的形狀，而獲得較佳的氣流引導效果，防止氣流的發散。 有關本發明的詳細内容及實施方式，茲配合圖式說明如後。 【實施方式】 百先請參閱「第4圖」，本發明所揭露的設計主要係以橢球燈為適用對 象，其與用以產生平行投射光束的拋物面燈不同，橢球燈的基本構造包括 有：一反射罩50，是一種半橢球形的元件，其面向焦點的内側面具有一鍍 膜，51 (係由高反射材料鍍膜形成）用以構成一種半橢球形的反射面；一 燈管60(b_r)，包含有一燈泡，設於燈泡内的兩個電極幻心 62b(electrode ’身又為鶴金屬電極），這兩個電極62&，必分別連結有一 63(fr〇ntfoil)^-^^ 64(backfoil)^^-^t#^65 . -刖接點651(tipwire)與前鈾片63連接用以供應電力；前述的燈泡μ設於 =罩5G内的I個餘，而在第二焦點附近則設有—積分柱鄉她卿^ 〇由:k泡6i放射出的光線其中大部份會被鍍膜面si反射至積分柱. 透過積分柱66使聚焦於第二地點處的光線均勻化。 、 ^發明之散熱構造的第_種較佳實施例如「第4圖」所示，其 B0 ^ ίΪΐί 7〇 狀；其t氣流喷嘴8〇的出’出風ϋ 81截面形狀可為圓錐狀或平面 讓氣流喷嘴80的出風口 ^接球燈的有效絲區邊緣的附近， 接近而要政熱的熱點處，避免散熱氣流的發散 1253897 f增加其散熱效果。λ中所稱的有效光束區係以鍍模面㈣邊緣至積分柱 6邊緣之連線line-2繞著半橢球形反射i 50之轴線line_3戶斤定義出一個錐 狀體所包_三度空齡假練圍。因此，即使光驗由反射·反射面 f射後，至終落於本處所定義之錐狀體所包圍的三度空間之外，此光線即 =法射進積分柱内，對系統的亮度亦無所貢獻。因此，落於錐狀體之外的 、'泉戒法被系統使用，在錐狀體之内的光線，依光的直進性 ，即可進入積 分才主。 再凊㈣「第5圖」及「第6圖」’係、為前述氣流噴嘴8〇的第二種較 ^贫施例’其中更在氣流喷嘴8G之出風σ 81内部的氣體祕設置有一導 2 82 ’用以對來自離心扇7G的散熱氣流進行分流，則丨導散熱氣流吹向 為要散熱的熱點。 =外’請«「第7圖」所示’係、為本發.熱構造之第三較佳實施 ^ 氣流喷嘴8〇之出風口 81與反射罩50間相銜接，使由出風口幻 點^冷部氣流’可配合反射罩5〇内部的形狀，引導散熱氣流流向燈泡頂 81血1 ’以獲得較佳的氣流引導效果’並且防止氣流的提前發散。出風口 於螺5G的橢球形表面她接之方式，可利職定手段(例如使用螺 二^的二段>於反射罩5〇的邊緣設置一銜接面⑽達到，透過銜接面81〇 =置可提供雛的氣密效果避免驗的漏>v另健面⑽可沿著反射 透過本發明所揭露的技術手段可以獲致以下的功效： 點勺^1^喷嘴8〇的出風口 81會愈接近需要散熱的散熱點，而這此散孰 61l(b：brp)r 63 ： 則接點65l(tip wire)和弟一接點幻2等處。 流的2發嘴8〇的出風口81愈接近需要的散熱點處愈能減少散熱氣 、人、3·由於散熱氣流利用率的增加，可以在較低之氣流量的 々部同瓦數的燈泡，所以離心扇的噪音問題將可以獲得改盖「 用 4.因為反射罩與氣流喷嘴的緊密連接設計，可以增加^流嘴嘴盘反射 1253897 罩的一體性，有助於散熱氣流的流動。 雖然本發明的技術特徵已藉由上述的較佳實施例說明如上，但以上所 述僅為本發明的較佳實施例而已，並非用來限定本發明之實施範圍◦即凡 依本發明申請專利範圍之内容所為的等效變化與修飾，例如在氣流喷嘴内 設計活動的導流板或是氣流的切換裝置，以改變散熱氣流的流場，甚至於 在反射罩之内側表面設置一些導流片等之等效變化，仍應包含於本發明之 技術範.^BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat dissipating structure, and more particularly to a heat dissipating structure for providing a cooling service for an ellipsoid lamp using a squirting mercury lamp through a cooling air flow. [Prior Art] An ellipsoid lamp using an ultra-high pressure discharge lamp (UHP) is widely used for, for example, a projector or an optical machine because of its excellent function of brightness and enthalpy of output luminance. Among the instruments, as the main light source; in general, the ellipsoid lamp is basically composed of a half-ellipsoidal reflector 10 and a bulb 20 (see "Dimensions, 2"), in which the reflector 10 One side facing the elliptical focus has a coated surface U (formed by a highly reflective material coating); and Yidou | 20 shells! It is a uitra-high pressure discharge lamp (UHP), which includes several main parts, which are internally filled with mercury and an inert gas. After being discharged by arc, a high voltage is generated (about 180 to 250). Atm·) bulb 22, two metal % poles 22 72b (usually tungsten electrodes) located in the bulb 21, and the two electrodes are connected to a metal shell (usually molybdenum) A platinum sheet 23 (frontfoil) and a rear platinum sheet 24 (backfoil), and a front electrode=leading wire 25 is connected to the front flap 23 at a front contact point 251 (tip wire) for supplying a private force. The two-pole spacing of the bulb 21 is set in the first focal point of the semi-ellipsoidal reflector 1 ”, occupying the position, and at the second focal point is provided an integral column 26 (111 stands both at 1 ^^ The light emitted by the bulb 21 is mostly reflected by the coating surface u to the integrating column 26, and the light focused on the second focus is homogenized by the integrating column 26. The old bulb 21 is made of amorphous quartz. Made of glass, it withstands temperatures above about 13 〇〇, too high: degrees will turn the material of the bulb into crystalline quartz glass The glass, in turn, reduces the transmittance of the glass, causing the temperature of the bulb 21 (f) to rise. Such a phenomenon causes the bulb 21 to be deformed, and the wall surface of the bulb a is thinned and finally bursts; the operating temperature of the bulb 21 is about 85 〇 95 〇 It is better. If it is lower than this temperature, the internal circulation of mercury will make the bulb gradually blacken, there is still a risk of bursting, and the temperature of the smudge is extremely important. If the temperature is slightly (10), it will cause 埶. Stress = not stalk 'even causing the explosion of the bulb 21 is generally based on the temperature of the bulb top of the two temperature points 2 lb (top) and the bottom of the bulb 2 2 (bulb _ - to determine the pot work, Whether the setting falls within the appropriate range. In addition, it is also easy to connect the power supply 1253897 of the pre-mail 23 and the adjacent components, such as the contact point 2i)1 (tlpwire) and the first contact 252. Oxidation is caused by high temperature, which affects the service life of high-pressure mercury lamps. "The heat dissipation effect of mercury lamps is an important issue. The traditional heat dissipation method (as shown in Figure 2) is utilized. A gas flow nozzle 30 (blower duct) will be scattered The hot airflow is directed to the hotspots that need to be dissipated. These hotspots include: the bulb apex 211 (131111^〇13), and the power connection point of the front platinum sheet 23 and the phase component, such as the front contact... In order to avoid blocking the reflected light reflected by the coated surface, the air flow nozzle 3 is disposed on the outer periphery of the reflective cover 10 (especially along the edge of the coated surface n along the light exiting area) Straight line connection lme 1) The mouth will not ring to the light of the integral column 26; otherwise, the airflow nozzle will block the reflected light reflected by the film surface li, which will affect the optical efficiency of the system. The airflow for heat dissipation is supplied by a centrifugal fan, but since the airflow blown by the centrifugal fan 4 is dispersed, it must be collected by the airflow nozzle 3〇 in order to more efficiently measure the - Some hotspots have cooled down the heat. In theory, when the airflow nozzle 3G is closer to the hot spot, the heat dissipation effect is better, but due to the optical design, the light emitted by the more reducing hood 1 is collected in the integrating column. Therefore, it is not desirable for any object to block the light exit of the bulb 2, so that the air outlet of the airflow nozzle 30 in the prior art is often located outside the reflector 1 (as shown in "Fig. 3"). Since the air outlet of the airflow nozzle 30 is too far away from the hotspot, the airflow that is blown out may not be covered or concentrated in the entire lamp. In order to solve the problem of heat dissipation of the bulb, it is often necessary to increase the air gap of the centrifugal fan 40. However, in a projector with a high wattage (such as ··W), the centrifugal fan 40 is more inclined than the axial flow. The fan height is high, so increasing the air flow of the centrifugal fan will not only increase the noise of the system, but also increase the speed of the centrifugal fan. In addition, the conventional airflow nozzle 30 is separated from the ellipsoidal lamp. Therefore, the phenomenon that the airflow nozzle 3〇 and the ellipsoidal lamp will leak $ will cause the circulation of the wind to affect the heat dissipation effect. SUMMARY OF THE INVENTION θ ^ The object of the present invention is to provide a heat dissipation structure which can improve the cooling effect of an ellipse. Another object of the present invention is to provide a heat dissipating structure of an ellipsoidal lamp, which extends the outlet of the airflow nozzle to the edge of the effective beam region of the ellipsoidal lamp, so that the air outlet of the airflow nozzle is close to the hot spot where heat dissipation is required, and the heat dissipation airflow is avoided. Divergence to increase its heat dissipation. A further object of the present invention is to provide a heat dissipating structure for an ellipsoidal lamp, which is provided with a baffle at the outlet of the airflow nozzle 1253897 to direct the cooling airflow to the hot spot in the closest condition. Still another object of the present invention is to provide a heat dissipating structure for a ball light, which is designed to be connected to a reflector by using an air outlet of the air nozzle to prevent airflow from being diffused by the reflector. In order to achieve the above object, the heat dissipation structure of the ellipsoid lamp of the present invention discloses a heat dissipation structure capable of improving the cooling effect of the ellipsoid lamp, and by redesigning the shape of the air jet nozzle and the position thereof, The air outlet of the airflow nozzle extends to the edge of the effective beam area of the ellipsoidal lamp, so that the air outlet of the airflow nozzle is closest to the hot spot where heat is required to be radiated, thereby avoiding the divergence of the airflow emitted by the nozzle, thereby increasing the heat dissipation effect thereof; and another preferred The implementation method further comprises providing a baffle at the air outlet of the airflow nozzle for guiding the heat dissipation airflow to the hot spot in the closest condition, and matching the shape of the reflector to obtain a better airflow guiding effect, preventing the airflow from diverging. . The details and embodiments of the present invention are described in conjunction with the drawings. [Embodiment] Please refer to "Fig. 4" for the first time. The design disclosed in the present invention mainly uses an ellipsoidal lamp as an object of application. Unlike a parabolic lamp for generating a parallel projection beam, the basic structure of the ellipsoid lamp includes There is: a reflector 50, which is a semi-ellipsoidal element having a coating on the inner side facing the focus, 51 (formed by a highly reflective material coating) for forming a semi-ellipsoidal reflecting surface; a tube 60 (b_r), comprising a bulb, two electrodes illusion 62b (electrode 'body is a metal electrode of the crane) disposed in the bulb, and the two electrodes 62&, respectively, must have a 63 (fr〇ntfoil) ^-^ ^ 64(backfoil)^^-^t#^65 . - The tip wire 651 is connected to the front uranium sheet 63 for supplying electric power; the aforementioned bulb μ is disposed in the hood 5G, and Near the second focus is set - the integral column township her Qing ^ 〇 by: k light 6i radiation, most of which will be reflected by the coated surface si to the integral column. Through the integral column 66 to focus on the second location The light is even. The preferred embodiment of the heat dissipating structure of the invention is shown in Fig. 4, and its B0 ^ Ϊΐ 〇 7 ; shape; the cross-flow shape of the air jet nozzle 8 可 can be conical or The plane allows the air outlet of the airflow nozzle 80 to be connected to the vicinity of the edge of the effective wire region of the ball lamp, and is close to the hot spot of the heat, to avoid the divergence of the heat dissipation airflow 1253897 f to increase its heat dissipation effect. The effective beam area referred to in λ is defined by a cone-shaped body around the axis line-2 of the edge of the plated surface (4) to the edge of the integrating column 6 around the axis of the semi-ellipsoidal reflection i 50 line_3 Degree vacancy practice. Therefore, even if the photodetection is emitted by the reflection/reflection surface f, and then falls outside the three-dimensional space surrounded by the cone defined by the space, the light is injected into the integration column, and the brightness of the system is also No contribution. Therefore, the 'spring ring method' that falls outside the cone is used by the system. The light inside the cone is dependent on the straightness of the light, and then it can enter the integration. Further, (4) "Fig. 5" and "Fig. 6" are the second type of leaner embodiment of the airflow nozzle 8〇, wherein the gas inside the airflow nozzle 8G is further provided with a gas inside the airflow σ 81. The guide 2 82 ' is used to shunt the heat-dissipating airflow from the centrifugal fan 7G, and the heat-dissipating airflow is blown toward the hot spot to be radiated. = Outside 'Please « 'Figure 7' as shown in the figure, is the third preferred embodiment of the thermal structure. The air outlet 81 of the airflow nozzle 8 is connected with the reflector 50 to make the vent point of the air outlet. The cold air flow ' can match the shape of the inside of the reflector 5 , guiding the heat flow to the bulb top 81 blood 1 'to obtain a better airflow guiding effect' and preventing the early divergence of the air flow. The air outlet is connected to the ellipsoidal surface of the snail 5G, and the singular means (for example, using the second section of the snail 2) is provided at the edge of the reflector 5 设置 by an interface (10), through the interface 81 〇 = The airtight effect of the chick can be provided to avoid the leakage of the test> v the other surface (10) can achieve the following effects along the reflection through the technical means disclosed in the present invention: the scooping nozzle 1 The closer to the heat-dissipating point that needs to be dissipated, and this is the 孰61l(b:brp)r 63 : then the contact 65l (tip wire) and the younger one touch the illusion 2 etc. The flow of the 2 mouth 8 〇 outlet The closer the 81 is to the required heat-dissipation point, the more the heat-dissipating gas and the person can be reduced. 3. Due to the increased utilization of the heat-dissipating airflow, the bulb with the wattage can be at the lower part of the airflow, so the noise problem of the centrifugal fan will be Obtaining the cover "With 4. Because the tight connection design of the reflector and the airflow nozzle can increase the integration of the nozzle of the nozzle nozzle 1253897, which contributes to the flow of the heat dissipation airflow. Although the technical features of the present invention have been The preferred embodiment is described above, but the above is only the present invention. The preferred embodiment is not intended to limit the scope of the invention, that is, equivalent variations and modifications in the context of the scope of the present invention, such as designing a movable baffle or airflow in a gas flow nozzle. Switching the device to change the flow field of the heat-dissipating airflow, and even setting the equivalent variation of the baffles and the like on the inner surface of the reflector, should be included in the technical scope of the present invention.
1253897 【圖式簡單說明】 第1圖，鱗統橢球燈之燈管部份的基本構造圖。 第2圖’轉韻球燈及其散熱構造縣本構造圖。 f3圖’為傳統財燈及其散熱構造之散減流的流路示意圖。 =4圖’為本發明之触實麵構造®，齡橢球燈及其散熱構造。 m為本發明之另—較佳實施例，顯減流喷嘴之導流板的構造及其1253897 [Simple description of the diagram] Figure 1, the basic structure of the lamp section of the ellipsoidal ellipsoid lamp. Figure 2 'The structure of the rhythm ball and its heat dissipation structure. The f3 diagram is a schematic diagram of the flow path of the conventional financial lamp and its heat dissipation structure. The =4 figure is the touch surface structure of the present invention, the age ellipsoid lamp and its heat dissipation structure. m is another embodiment of the present invention, the structure of the deflector of the flow reducing nozzle and
氣流的流動示意圖Q 第6圖，為本發明氣流噴嘴之立體構造圖。Flow diagram of air flow Q Fig. 6 is a perspective structural view of the air flow nozzle of the present invention.
第7圖’為本發明之另—較佳實施例，顯示氣流喷嘴之出風口與反射罩的 橢球形表面之銜接面形狀。 【主要元件符號說明】 習知構造圖 10....... 11....... 20....... 21....... 211....... 212....... 22a, 22b..... 23 ....... 24 ....... 25 ....... 251 ....... 252 ....... 26 ....... 30....... 40....... line-1...... •••半橢球形的反射罩 •··鍍膜面 ···燈管(burner) • ••燈泡(bulb) ••燈泡頂端(bulb top) ••燈泡底端（bulb bottom)Figure 7 is a further preferred embodiment of the present invention showing the shape of the interface between the air outlet of the air jet nozzle and the ellipsoidal surface of the reflector. [Explanation of main component symbols] Conventional construction diagram 10....... 11....... 20....... 21....... 211....... 212....... 22a, 22b..... 23 ....... 24 ....... 25 ....... 251 ....... 252 . ...... 26 ....... 30....... 40....... line-1...... ••• Semi-ellipsoidal reflectors·· ·Coated surface ···················•••••••••••••••••••••••••••••••••••••••••••••••••••••••••
金屬電極 • ··前鈾片（front foil) • ••後鉑片（back foil) •••前電極導線 •兩接點(tip wire) ••第一接點 •••積分柱 • ••氣流喷嘴(blower duck) • ··離心扇(blower) •···鍍膜面邊緣沿著出光方面的直線連線 10 1253897 本發明的構造 50 ······»·。·反射罩 51 ..........鍍膜面 60 ..........燈管(burner) 61 ..........燈泡(blub) 611........燈泡頂點 62a, 62b.......電極（electrode) 63 ..........前鈾片（front foil) 64 ..........後鉑片（back foil) 65 ..........前電極導線 651 ........前接點(tip wire) 652 ........第一接點 66 ..........積分柱(Integrated Rod) 70..........離心扇 80 ..........氣流噴嘴 81 ..........氣流喷嘴的出風口 810..........銜接面 82 ..........導流板 line-2........鍍模面的邊緣至積分柱邊緣之連線 line-3........半橢球形反射罩之轴線Metal electrode • Front uranium • • • Back foil ••• Front electrode lead • Tip wire •• First contact •••Integral column ••• Blower duck • ····································································· ·Reflection cover 51 ..........coating surface 60 ..........lighter (burner) 61 ..........light bulb (blub) 611.. ...light bulb apex 62a, 62b.......electrode 63 .......... front uranium (front foil) 64 ......... . Back foil 65 .......... front electrode wire 651 ........ front wire (tip wire) 652 ........ first connection Point 66 ..........Integrated Rod 70.......... Centrifugal fan 80 .......... Airflow nozzle 81 ..... .....air outlet nozzle 810..........engagement surface 82 ..........baffle line-2........plating mold The line from the edge of the face to the edge of the integral column line-3........the axis of the semi-ellipsoidal reflector