200832491 九、發明說明 【發明所屬之技術領域】 本發明是關於紫外線放電燈。 【先前技術】 一般在3 5 0至3 8 0nm附近具有高發光強度的紫 光的金屬鹵化物燈，是對於紫外線硬化塗料的硬化 近年來市場用途高的功能性高分子薄膜的光反應上 〇 然而，眾知340nm以下的燈光波長領域的光， 能性材料上給予劣化，而抑制此些短波長被使用。 作爲滿足此種要求者，如習知日本特開平03 -號公報（專利文獻1 )所述地，眾知藉由將金屬鉈 鉈與鐵與水銀一起封入在氣密性容器，抑制340nm 短波長的紫外線而在3 6 5nm附近具有高發光強度的 放電燈。 然而，習知的加入鐵的鹵化鉈燈，是藉由鐵元 在3 65nm的光譜是急峻地出現，惟實際上得到作爲 與其近旁波長的光譜的積分値的3 65nm的光譜之故 嚴密的3 65nm波長的光譜是有不充分的問題點。又 時間放電點燈，則放電媒體中的鐵元素與氣密性容 英玻璃產生反應而發生失透現象，也有降低發光強 時，產生降低亮度的問題點。又，近年來，有液晶 置的大畫面化所代表的大型薄膜或印刷物等的朝軸 外線發 ，或是 有效果 是在功 250549 或鹵化 以下的 紫外線 素的存 3 6 5 nm ，因而 ，若長 器的石 度之同 顯示裝 方向均 -5- 200832491 句地實現照度分布而可曝光的較長（例如丨8 〇 〇 mm )的燈 的需求。然而，在加入鐵的鹵化鉈燈，若發光長度超過 3 00mm，則會發生分離發光等，也有在長度化要求上不適 合的燈性能的問題點。 專利文獻1 :日本特開平03-250549號公報 【發明內容】 本發明是鑑於上述習知技術的課題而創作者，其目的 是在於提供340nm以下的紫外線光譜較少，而在34〇nm 至3 8 Onm可發光具有強光譜的紫外光的紫外線放電燈。 本發明之其他目的是在於提供在高照度朝燈管軸方向 不會發生分光或照度偏差（分離發光），可得到長度化， 且可得到長壽命化的紫外線放電燈。 本發明第1項特徵是’一種紫外線放電燈，其特徵爲 :作爲放電媒體未含有鐵元素於發光管內，而與水銀一起 封入有鹵化鉈。200832491 IX. Description of the Invention [Technical Field of the Invention] The present invention relates to an ultraviolet discharge lamp. [Prior Art] A metal halide lamp having a high luminous intensity of violet light in the vicinity of 350 to 380 nm is a photoreaction of a functional polymer film which has been highly used in the market for hardening of an ultraviolet curing coating in recent years. It is known that light in the light wavelength region below 340 nm is degraded on the energy material, and the suppression of such short wavelengths is used. As described in Japanese Laid-Open Patent Publication No. Hei 03-93 (Patent Document 1), it is known that a metal crucible is sealed with iron and mercury in an airtight container to suppress a short wavelength of 340 nm. The ultraviolet ray has a discharge lamp with a high luminous intensity near 365 nm. However, the conventional iron-added xenon halide lamp is formed by the fact that the spectrum of the iron element at 3 65 nm is sharp, but it is actually obtained as a spectrum of 3 65 nm which is an integral 値 of the spectrum of the wavelength near it. The spectrum of the 65 nm wavelength is an insufficient problem. When the time is discharged, the iron element in the discharge medium reacts with the airtight espresso glass to cause devitrification, and when the luminescence intensity is lowered, the problem of lowering the brightness occurs. In addition, in recent years, there is an out-of-axis line of a large film or a printed matter represented by a large-screen liquid crystal display, or an effect is that the amount of ultraviolet light below the work 250549 or halogenated is 3 5 5 nm. The stone degree of the long device shows the need to install a lamp with a longer illumination (for example, 丨8 〇〇mm). However, in the case of an antimony halide lamp in which iron is added, if the luminous length exceeds 300 mm, separation light emission or the like may occur, and there is also a problem of lamp performance which is unsuitable in length requirements. SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide an ultraviolet spectrum of 340 nm or less and a small amount of 34 〇 nm to 3 8 Onm emits an ultraviolet discharge lamp with a strong spectrum of ultraviolet light. Another object of the present invention is to provide an ultraviolet discharge lamp which does not cause spectroscopic or illuminance deviation (separated light emission) in the direction of the lamp axis in high illuminance, can be obtained in length, and can be extended in life. According to a first aspect of the invention, there is provided an ultraviolet discharge lamp characterized in that the discharge medium does not contain iron in the arc tube, and the antimony halide is sealed together with the mercury.
在上述紫外線放電燈中，上述鹵化銳的封入量Μ，是 在上述發光管的內徑D$30mm的情形，作爲〇.〇lmg/ccS 0.3mg/cc 〇 又，在上述紫外線放電燈中，在上述發光管的內徑D S30mm，將發光長 L 作爲 500mm$LS2500mg/cc 時，則 將水銀的封入量Hg作爲〇.9mg/cc$HgS5.0mg/cc，又將 鹵化鉈的封入量Μ可作爲〇.〇12mg/ccSMS0.1mg/cc。 又在上述紫外線放電燈，包括於上述發光管內的水銀 -6 - 200832491 及鹵化鉈的放電媒體，是上述發光管的內徑 D作爲 D<3 0mm時，貝ί]將穩定點燈時的電位傾度E ( V/cm )的數 値可採用8<E<30的數値作爲封入量。 又，在上述紫外線放電燈中，上述鹵化鉈是可作爲碘 化鉈（T 11 )。 又，在上述紫外線放電燈中，上述碘化鉈（T1I )是 將與水銀（Hg)的重量比 Mr = Hg(mg/cc) /Tll(mg/cc) 可作爲 10 S Mr S 200。 依照本發明的紫外線放電燈，係爲放電媒體與水銀一 起有鹵化鉈被封入於燈容器，因未含有鐵元素，因此可有 效率地發光在鉈的發光波的3 52nm具有高光譜的紫外線。 又’依照本發明的紫外線放電燈，以高照度，而朝燈管軸 方向不會發生分光或照度偏差可進行發光，且可得到長壽 命化。 【實施方式】 以下，依據圖式詳述本發明的實施形態。 (第1實施形態） 使用第1圖，未說明本發明的第1實施形態的紫外線 放電燈。本實施形態的紫外線（UV )放電燈5 2是在形成 具有紫外線透射性的石英製發光管的氣密性容器520的內 部’配置有鎢（W)所製等的電極521，522，在外部分別 設有燈座5 23 ’ 524的外管徑27.5mm，厚度1 .5mm，發光 200832491 長L爲l〇〇〇mm，燈電壓1 100V，燈電流値1 1·0Α 者。 在氣密性容器5 2 0的內部，封入有氬（Ar )氣 稀有氣體、水銀、以及鹵化鉈。作爲該鹵化鉈，可 化鉈（T1I )。如第2圖所示地，碘化鉈的情形， 352nm，365nm，378nm 附近，尤其在波長 352nm， 附近具有大的發光峰値。代替碘化鉈，也可採用溴 鉈（T1)是在 3 52nm’ 3 6 5 nm，3 78nm 的波長 具有強輝線光譜，具有減少水銀的發光強度的效果 抑制313nm的水銀發光，可發光相對地增多3 40至 的波長領域的發光的紫外線。因此，本實施形態的 放電燈5 2，是可減低對於紫外線硬化塗料或功能性 的處理的特性有很大影響的波長領域340nm以下的 照射。 鹵化鉈的封入量是在發光管的內徑DS 30mm ，封入量Μ是作成由 0.01mg/ccSMS0.3mg/cc所 量較佳。更佳爲，螢光管的內徑D爲DS 30mm，發 作爲5 00mmg Lg 25 00mg/cc時，貝[J將水銀的封入量 爲0.9mg/ccSHgg5.0mg/cc，又將鹵化銘的封入量 0.012mg/ccS MS 0.1mg/cc中所選擇的量較佳。 藉由將鹵化鉈的封入量Μ作爲MS 0.3mg/cc， 5 2的軸方向可得到均勻的照度之故，因而可實現紫 於被照射物的均勻照射。又，如第2圖的分光特性 ，因可將對被照射物的特性有影響的波長3 1 3 nm的 的規格 體等的 使用碘 在波長 3 7 8 nm 化鉈。 領域內 ，因此 4 0 Onm 紫外線 塑膠等 紫外線 的情形 選擇的 :光長L i Hg作 Μ作爲 對於燈 外線對 所示地 照度峰 -8- 200832491 値，比波長3 6 5nm的照度峰値還減低 更提高紫外線照射後的被照射物的特性 化鉈的封入量作成 0.3mg/cc以上，則 器5 2 0內的銳朝燈5 2的長度方向不均 光分離，會降低燈性能。 又，藉由混入鹵化鉈，可抑制發生 線的3 1 3 nm峰値的紫外線，而可將峰 度對於峰値3 6 5 nm的光譜強度抑制在 來自混入鹵化鉈的紫外線放電燈的紫外 射，避免劣化被照射物的作用，而更有 照射物的紫外線處理。 又，在本實施形態中，發光管內徑 可將穩定點燈時的電位傾度E ( V/cm ) 由此，可得到不會過負荷地長壽命而有 的紫外線放電燈。 又，氣密容器的內徑爲30nm以下 的輸入（W/cm )爲60 W/cm以上進行點 封入量（mg/cc)作爲 0.3mg/cc以下 3 4 0mm以下光譜的發光強度，而可提高 3 78nm光譜的發光強度。 又，作爲電極521，522的鎢材，_ 上氧化铈（Ce2〇3 )的鈽鎢。一般廣泛 材的钍鎢，是氧化钍爲穩定的化合物， 此’將工作函數接近於該氧化钍的氧化 5 %以下，因此，可 。一方面，若將鹵 被封入在氣密性容 勻地分散而產生發 利用水銀燈的紫外 宣3 1 3 n m的光譜強 5 %以下，結果，以 線對被照射物的照 效果地進行對於被 D 爲 D<30mm 時， 作爲 8<E<30 ，藉 效地利用鉈之發光 ，且每一單位長度 燈，可將碘化鉈的 ，藉由此，可減輕 352nm， 365nm， 叮使用含有0.5%以 地被利用作爲電極 惟具有放射性。如 鈽含有於鎢，則可 -9- 200832491 得到與钍鎢電極同等的電極壽命，且不必顧慮因放射性物 質對於環境面的不良影響。在第3圖的圖表表示採用習知 的钍鎢電極的紫外線放電燈及採用鈽鎢電極的紫外線放電 燈的壽命特性的測定結果。圖表A是採用钍鎢電極的紫外 線放電燈的壽命特性，而圖表B是鈽鎢電極的紫外線放電 燈的壽命特性，可知採用鈽鎢電極的燈的壽命特性與習知 的钍鎢電極表示同等的壽命特性。此種鈽鎢電極是針對於 以下的其他實施形態的紫外線放電燈也可同樣地被採用。 (第2實施形態） 針對於本發明的第2實施形態的紫外線放電燈加以說 明。本實施形態的紫外線放電燈52的構造，是與表示於 第1圖的第1實施形態同樣。又，封入於氣密性的放電容 器內部的放電媒體的碘化鉈的封入量上具有特徵。 作爲本實施形態的情形，作爲燈的規格，在具有紫外 線透射性的石英製氣密性容器520的內部，配置有鎢（W )製等電極521，522的外管徑27.5mm，厚度1.5mm，發 光長L可作成1 800mm。又，在氣密性容器5 20的內部， 作爲放電媒體封入氬（Ar )氣體，水銀以及碘化鉈（T1I )。該放電媒體的水銀Hg與碘化鉈T1I的重量比Mr是 l〇S MrS 200。作成該比率，若作成Mr<10時，則在燈軸 方向發生分離發光。另一方面，若作成Mr>200時，則鉈 的發光變小，僅發生水銀的發光而成爲不是活用鉈的發光 的燈。 -10- 200832491 又，在本實施形態中，在發光內徑D爲D<30mm時， 也可將穩定點燈時的電位傾度E ( V/cm )作成8<E<30 ’ 藉由此，可得到不會過負荷地長壽命而有效地利用鉈之發 光的紫外線放電燈。 (第3實施形態） 針對於本發明的第3實施形態的紫外線放電燈加以說 明。本實施形態的紫外線放電燈52的構造，所封入放電 媒體是與表示於第1圖的第1實施形態同樣。又在本實施 形態，作爲輸入電力 W ( W/cm )，氣密性容器的內表面 積2 7Γ r ( cm2 )時，將管壁負荷W/cm2作爲 0.5 <W/cm 2/3 .5，就可管理燈溫度作成長壽命的燈爲其特徵 者。 例如對於在石英製氣密性容器的內部，配置鎢製等的 電極的外管徑27.5mm，厚度1.5mm，發光長L爲1 000mm ，又，作爲放電媒體與氬氣體一起封入水銀1.68mg/cc， 碘化鉈0.105mg/cc的紫外線放電燈，施加燈電壓1 100V， 燈電流値10.2A的電力，如此地將管壁負荷W/cm2作成 l<W/cm2<60，就可管理燈溫度，可減少點燈中的溫度劣化 ，而可作成長壽命的燈。 又，在本實施形態中，發光管內徑D爲D<3 0mm時， 可將穩定點燈時的電位傾度E ( V/cm )作爲8<E<30，藉 由此，可得到不會過負荷地長壽命而有效地利用鉈之發光 的紫外線放電燈。 -11 - 200832491 又，氣密容器的內徑爲3 0 nm以下，且每一單位長度 的輸入（W/cm )爲60W/cm以上進行點燈，可將碘化鉈的 封入量（mg/cc )作爲0.3mg/cc以下，藉由此，可減輕 3 40mm以下光譜的發光強度，而可提高3 52nm，3 65nm， 3 7 8nm光譜的發光強度。 (第4實施形態） 在第4圖，第5圖表示本發明的第4實施形態的紫外 線放電燈的點燈裝置。本實施形態的紫外線放電燈點燈裝 置，是將燈52本體的燈座5 23，524與用以裝載於電路側 的燈座5 25，5 26作爲陶瓷製，且在共用的構造上具有特 徵。 在本實施形態，將外部固定用燈座525，526裝載於 電路側，而與燈52側的凍石燈座523，524嵌合就可固定 燈52。此些兩燈座523〜526都是陶瓷製。依照本實施形態 ’在通電部周邊可避免金屬零件，可確保電性上安全的機 構，僅該部分可成爲低成本的設計。 又，在上述的各實施形態，代替鹵化鉈也可採用鹵化 鈷或鹵化銦。 又，本發明的紫外線放電燈，是可對應於印刷基板、 乾燥、印刷、製版印相等，多種曝光光源的用途。 (實施例1 ) 本發明的實施例1的紫外線放電燈，是在管外徑φ -12- 200832491 27.5 mm，厚度1.5 mm，發光長1000 mm的紫外通過性石英 製的氣密容器內部兩端封裝鎢所成的電極，又將水銀及碘 化鉈與氬氣體一起作爲發光金屬封裝於氣密容器的內部者 。其封入量是水銀 1.6mg/cc，碑化鉈 0.1mg/cc，氬氣 1 .3 3kPa，此時的電性特性爲1 1 00V、1 1 .〇A。上述燈是在 紫外域具有各該金屬的峰値，進行朝軸方向均勻的發光。 進行分光分析，實施例1的紫外線放電燈的情形，可確認 利用碘化鉈的波長，亦即，352nm，3 6 5nm，3 7 8nm的光 譜成分的照度出現較高，而且不會發生朝軸方向分光成照 度偏差，亦即不會發生分離發光。 藉由此，採用強烈截斷比習知還低3 20nm以下的波長 成分的濾波器，成爲可更確實地抑制有害的紫外線波長領 域的處理。 (實施例2 ) 作爲實施例2的紫外線放電燈，準備在石英製的氣密 性容器內部配置有鎢製等的電極的外管徑27.5mm，厚度 1.5mm，發光長L爲1 8 0 0mm，又，作爲放電媒體與氬氣 體一起，以水銀 1.68mg/cc，職化銳 0.032mg/cc ( Mr = 52.5 )的比率封入的紫外線放電燈。In the above ultraviolet discharge lamp, the amount of the halogenated encapsulation Μ is in the case where the inner diameter of the arc tube is D$30 mm, and in the ultraviolet discharge lamp, 紫外线.〇lmg/ccS 0.3 mg/cc. When the inner diameter of the arc tube is D S30 mm and the luminous length L is 500 mm LS 2500 mg/cc, the sealing amount Hg of mercury is 〇.9 mg/cc $ HgS 5.0 mg/cc, and the amount of cesium halide is Μ It can be used as 〇.〇12mg/ccSMS0.1mg/cc. Further, in the ultraviolet discharge lamp, the discharge medium of mercury-6 - 200832491 and the antimony halide included in the arc tube is when the inner diameter D of the arc tube is D < 30 mm, and the lamp is stably lit. The number 电位 of the potential inclination E (V/cm) may be a number of 8 < E < 30 as the enclosed amount. Further, in the above ultraviolet discharge lamp, the above-mentioned antimony halide may be used as cesium iodide (T 11 ). Further, in the above ultraviolet discharge lamp, the above-mentioned cesium iodide (T1I) is a weight ratio of mercury (Hg): Mr = Hg (mg/cc) / Tll (mg / cc), which is 10 S Mr S 200. According to the ultraviolet discharge lamp of the present invention, the discharge medium is sealed with mercury in the presence of cesium halide, and is sealed in the lamp vessel. Since it does not contain iron, it can efficiently emit ultraviolet rays having a high spectrum at 325 nm of the luminescent light of krypton. Further, the ultraviolet discharge lamp according to the present invention can emit light without causing spectroscopic or illuminance deviation in the direction of the lamp axis with high illuminance, and can obtain long life. [Embodiment] Hereinafter, embodiments of the present invention will be described in detail based on the drawings. (First Embodiment) An ultraviolet discharge lamp according to a first embodiment of the present invention is not described with reference to Fig. 1 . In the ultraviolet (UV) discharge lamp 52 of the present embodiment, the electrodes 521 and 522 which are made of tungsten (W) or the like are disposed inside the hermetic container 520 in which the ultraviolet light-transmitting quartz light-emitting tube is formed. The outer diameter of the lamp holder 5 23 ' 524 is 27.5 mm, the thickness is 1.5 mm, the light emission is 200832491, the length L is l〇〇〇mm, the lamp voltage is 1 100V, and the lamp current is 11 1·0Α. Inside the hermetic container 520, argon (Ar) gas, mercury, and cesium halide are enclosed. As the ruthenium halide, ruthenium (T1I) can be obtained. As shown in Fig. 2, in the case of cesium iodide, there are large luminescence peaks in the vicinity of 352 nm, 365 nm, and 378 nm, especially at a wavelength of 352 nm. Instead of cesium iodide, bromine bismuth (T1) can be used at a wavelength of 3 52 nm ' 3 6 5 nm and 3 78 nm, which has a strong luminescence spectrum, and has the effect of reducing the luminescence intensity of mercury, suppressing mercury emission at 313 nm, and illuminating relatively Increase the luminescence of the light in the wavelength range of 3 to 40. Therefore, the discharge lamp 52 of the present embodiment can reduce the irradiation of the wavelength region of 340 nm or less which greatly affects the characteristics of the ultraviolet curable coating material or the functional treatment. The amount of ruthenium halide enclosed is 30 mm in the inner diameter of the arc tube, and the amount 封 is preferably made from 0.01 mg/cc SMS 0.3 mg/cc. More preferably, the inner diameter D of the fluorescent tube is DS 30 mm, and when the hair is taken as 500 mmg Lg 25 00 mg/cc, the sealing amount of mercury is 0.9 mg/ccSHgg 5.0 mg/cc, and the halogenated seal is sealed. The amount selected in the amount of 0.012 mg/ccS MS 0.1 mg/cc is preferred. By arranging the amount of ruthenium halide to be 0.3 mg/cc of MS, the uniform illuminance can be obtained in the axial direction of 5.2, so that uniform illumination of the illuminating object can be achieved. Further, as the spectroscopic characteristics of Fig. 2, the use of iodine at a wavelength of 3 7 3 nm, which can affect the characteristics of the object to be irradiated, has a wavelength of 3 7 3 nm. In the field, therefore, the ultraviolet light such as 40 Onm plastic is selected: the light length L i Hg is used as the illuminance peak -8-200832491 对于 for the pair of lamps, and the illuminance peak is lower than the wavelength of 3 6 5 nm. When the amount of encapsulation of the irradiated material after the ultraviolet irradiation is increased to 0.3 mg/cc or more, the longitudinal direction of the lamp 5 2 in the device 5 20 is unevenly separated, and the lamp performance is lowered. Further, by mixing the antimony halide, the ultraviolet rays at the peak of the 3 13 nm peak of the line can be suppressed, and the spectral intensity of the kurtosis for the peak 値 3 6 5 nm can be suppressed to the ultraviolet ray from the ultraviolet discharge lamp mixed with the antimony halide. In order to avoid deteriorating the effect of the irradiated object, there is more ultraviolet treatment of the irradiated object. Further, in the present embodiment, the inner diameter of the arc tube can be obtained by stably tilting the potential E (V/cm) at the time of stable lighting, and an ultraviolet discharge lamp having a long life without overloading can be obtained. In addition, the input (W/cm) of the inner diameter of the airtight container of 30 nm or less is 60 W/cm or more, and the dot sealing amount (mg/cc) is used as the luminous intensity of the spectrum of 0.3 mg/cc or less and 340 mm or less. Increase the luminescence intensity of the 3 78 nm spectrum. Further, as the tungsten material of the electrodes 521, 522, 钸 tungsten of the upper cerium oxide (Ce2 〇 3 ). Generally, bismuth tungsten is a compound in which yttrium oxide is stable, and this work function is close to the oxidation of yttrium oxide of less than 5%, and therefore, it is acceptable. On the other hand, if the halogen is sealed and dispersed in a gas-tight manner, the spectrum intensity of the ultraviolet ray 3 13 nm using the mercury lamp is 5% or less, and as a result, the effect of the line on the irradiated object is performed. When D is D<30mm, as 8<E<30, the light of 铊 can be utilized efficiently, and the lamp of each unit length can be used for cesium iodide, thereby reducing 352 nm, 365 nm, and using 0.5. % is utilized as an electrode and is only radioactive. If yttrium is contained in tungsten, then -9-200832491 can obtain the same electrode life as ruthenium-tungsten electrode, and there is no need to worry about the adverse effects of radioactive materials on the environmental surface. The graph in Fig. 3 shows the measurement results of the life characteristics of an ultraviolet discharge lamp using a conventional tantalum tungsten electrode and an ultraviolet discharge lamp using a tantalum tungsten electrode. Graph A is the life characteristic of the ultraviolet discharge lamp using the tantalum tungsten electrode, and graph B is the life characteristic of the ultraviolet discharge lamp of the tantalum tungsten electrode. It is understood that the life characteristics of the lamp using the tantalum tungsten electrode are the same as those of the conventional tantalum tungsten electrode. Life characteristics. Such a tantalum tungsten electrode can be similarly applied to the ultraviolet discharge lamp of the other embodiments described below. (Second Embodiment) An ultraviolet discharge lamp according to a second embodiment of the present invention will be described. The structure of the ultraviolet discharge lamp 52 of the present embodiment is the same as that of the first embodiment shown in Fig. 1. Further, the amount of encapsulation of cesium iodide in the discharge medium enclosed in the hermetic discharge capacitor is characterized. In the case of the present embodiment, the outer diameter of the electrodes 521 and 522 made of tungsten (W) is 27.5 mm and the thickness is 1.5 mm in the inside of the quartz airtight container 520 having ultraviolet transmittance. The luminous length L can be made to be 1 800 mm. Further, inside the airtight container 520, argon (Ar) gas, mercury, and cesium iodide (T1I) are sealed as a discharge medium. The weight ratio of mercury Hg to cesium iodide T1I of the discharge medium is l 〇 S MrS 200. When this ratio is created, when Mr < 10 is formed, separation light is emitted in the direction of the lamp axis. On the other hand, when Mr > 200 is produced, the luminescence of 铊 is reduced, and only the luminescence of mercury is generated, and the illuminating lamp is not used. -10- 200832491 In the present embodiment, when the light-emitting inner diameter D is D < 30 mm, the potential inclination E (V/cm) at the time of stable lighting can be made 8 < E < 30 '. It is possible to obtain an ultraviolet discharge lamp that can effectively utilize the light emission of the crucible without long-term overload. (Third embodiment) An ultraviolet discharge lamp according to a third embodiment of the present invention will be described. The structure of the ultraviolet discharge lamp 52 of the present embodiment is the same as that of the first embodiment shown in Fig. 1 . Further, in the present embodiment, when the internal surface area of the airtight container is 2 7 Γ r (cm2 ) as the input electric power W (W/cm), the wall load W/cm2 is set to 0.5 < W/cm 2 /3 .5 . It is a feature that can manage the temperature of the lamp for the life of the lamp. For example, in the inside of a gas-tight container made of quartz, an electrode such as tungsten is disposed with an outer diameter of 27.5 mm, a thickness of 1.5 mm, and an emission length L of 1 000 mm. Further, as a discharge medium, mercury is sealed with argon gas at a rate of 1.68 mg/ Cc, an ultraviolet discharge lamp of 0.105 mg/cc of cesium iodide, applying a lamp voltage of 1 100 V, a lamp current of 0.2 10.2 A, and thus managing the lamp wall load W/cm 2 as l < W/cm 2 < 60 The temperature can reduce the temperature deterioration in the lighting, and can be used as a lamp for a long life. Further, in the present embodiment, when the inner diameter D of the arc tube is D < 30 mm, the potential inclination E (V/cm) at the time of stable lighting can be set to 8 < E < 30, whereby An ultraviolet discharge lamp that efficiently uses the illuminating light of the krypton. -11 - 200832491 In addition, the inner diameter of the airtight container is 30 nm or less, and the input (W/cm) per unit length is 60 W/cm or more, and the amount of cesium iodide can be enclosed (mg/ When cc) is 0.3 mg/cc or less, the luminescence intensity of the spectrum of 3 40 mm or less can be reduced, and the luminescence intensity of the spectrum of 3 52 nm, 3 65 nm, and 378 nm can be improved. (Fourth Embodiment) Fig. 4 and Fig. 5 show a lighting device for an ultraviolet discharge lamp according to a fourth embodiment of the present invention. In the ultraviolet discharge lamp lighting device of the present embodiment, the sockets 52, 524 of the main body of the lamp 52 and the sockets 5, 25, 26 for mounting on the circuit side are made of ceramics, and have a common structure. . In the present embodiment, the external fixing sockets 525, 526 are mounted on the circuit side, and the lamps 52 are fixed to the frosted lamp holders 523, 524 on the side of the lamps 52. These two lamp holders 523 to 526 are made of ceramic. According to the present embodiment, a metal component can be avoided around the current-carrying portion, and an electrically safe mechanism can be secured, and only this portion can be designed at a low cost. Further, in each of the above embodiments, cobalt halide or indium halide may be used instead of the hafnium halide. Further, the ultraviolet discharge lamp of the present invention is applicable to a plurality of exposure light sources in accordance with a printing substrate, drying, printing, and plate-making. (Embodiment 1) The ultraviolet discharge lamp of Embodiment 1 of the present invention is an inner end of an airtight container made of an ultraviolet-passive quartz having an outer diameter of φ -12 - 200832491 27.5 mm, a thickness of 1.5 mm, and an emission length of 1000 mm. The electrode formed by encapsulating tungsten, and the mercury and cesium iodide together with the argon gas are encapsulated inside the airtight container as a luminescent metal. The amount of encapsulation is 1.6 mg/cc of mercury, 0.1 mg/cc of cerium oxide, and 133 kPa of argon gas. The electrical properties at this time are 1 00 V, 1 1 .〇A. The lamp has a peak of each of the metals in the ultraviolet region, and emits light uniformly in the axial direction. When the spectroscopic analysis was carried out, in the case of the ultraviolet discharge lamp of Example 1, it was confirmed that the wavelength of the cesium iodide, that is, the wavelength of 352 nm, 365 nm, and 377 nm was high, and the axial direction did not occur. The direction is split into illuminance deviations, that is, separation light does not occur. By this means, a filter which is highly cut off from a wavelength component which is lower than the conventional wavelength of 3 20 nm or less is used, and it is possible to more reliably suppress the harmful ultraviolet wavelength. (Example 2) As the ultraviolet discharge lamp of the second embodiment, an outer diameter of an electrode made of tungsten or the like is placed inside an airtight container made of quartz, and the outer diameter is 27.5 mm, the thickness is 1.5 mm, and the luminous length L is 1 800 mm. Further, as a discharge medium, together with argon gas, an ultraviolet discharge lamp sealed at a ratio of 1.68 mg/cc of mercury and 0.032 mg/cc (M = 52.5).
又，作爲比較例1，對於相同規格的氣密性容器，也 準備以水銀 l.〇9mg/cc，碑化銘0.218mg/cc(Mr=5)的比 率所封入的比較例1的紫外線放電燈。又，作爲比較例2 ，對於相同規格的氣密性容器，也準備以水銀l.〇9mg/CC -13- 200832491 ，碘化鉈 0.00 1 mg/cc ( Mr= 1 0 90 )的比率所封入的比較例 2的紫外線放電燈。 如此放電點燈此些實施例2，比較例1，比較例2的 紫外線放電燈，而將計測分光特性的結果表示於第6 ( a ) 圖至第6 ( c )圖，如第6 ( a )圖所示地，本發明的實施 例2的情形，表示高照度且未發生朝燈軸方向分光或照度 偏差（分離發光），而有效率地放射352nm，378nm的光 譜的鉈發光的燈特性。對於此，如第6 ( b )圖所示地，認 定在M r < 1 0的比較例1中，在燈左右的照度上發生相差， 而發生分離發光的情形。此爲，藉由作成水銀與碘化鉈的 比率Mr < 1 0，在放電電漿中利用水銀與鉈的原子半徑差成 爲不容易產生封入物的擴散，而朝軸方向會發生分離發光 所致。又如第6 ( c )圖所示地在Mr>2 00的比較例2中， 鉈的光譜變小，僅產生水銀的發光，無法活用碘化鉈的特 性的紫外線放電燈。 (實施例3 ) 作爲本發明的實施例（T1 )，準備作爲在放電媒體未 含有鐵元素的紫外線放電燈，在石英製的氣密性容器內部 配置有鎢製等電極的的外管徑27.5mm，厚度1.5mm，又 ，作爲放電媒體與氬氣體一起以水銀1.68mg/Cc，碘化鉈 0· 024mg/cc的比率所封入的如第7圖的表i所示地燈長不 相同的複數種紫外線放電燈。又，作爲比較例（F1 + T1 ) ’準備作爲在放電媒體含有鐵元素的紫外線放電燈，在石 -14- 200832491 英製的氣密性容器內部配置有鎢製等電極的外管徑 27.5mm，厚度1.5mm。又，作爲放電媒體與氬氣體一起以 水銀 1 .lOmg/cc，鐵元素 〇.〇3mg/cc，碘化鉈 〇.i〇mg/cc 的 比率所封入的如同表所示的燈長不相同的複數種氣密性容 器。又’針對於此些進行調查有無分離發光，比較例的情 形，在燈長200mm未看到分離發光，惟在500mm長的情 形，發光成爲不穩定，而在750mm以上的燈被認出有分 離發光。對於此，本潑明的實施例的情形，燈長200mm 至23 00mm的任一者都未被認出有分離發光，得到穩定的 放電發光。 (實施例4 ) 準備在石英製的氣密性容器內部配置有鎢製等的電極 的外管徑27.5mm，厚度1.5mm，發光長L 1 8 00mm，又作 爲放電媒體與氬氣體一起，水銀1.68mg/cc，而如第8圖 的表2所示地將碘化鉈的含有量作成不相同的複數種的紫 外線放電燈，進行調查有無分離發光與適否紫外線照度。 結果，即使相同的水銀含有量，作爲也不會有分離發光， 可得到所期望的紫外線照度的條件，可確認碘化鉈的含有 量爲0.012mg以上，而在〇.〇32mg/cc較適當。 (實施例5 ) 本發明的實施例的紫外線放電燈，是在管外徑 φ 27.5mm，厚度l.5mm，發光長100mm的紫外線透射性 •15- 200832491 石英製的氣密性容器內部兩端封裝鎢所成的電極，又將水 銀及碘化鉈作爲發光金屬與氬氣體一起封入在氣密性容器 內部者。其封入量是水銀1.6mg/CC，碘化鉈（K 03 2mg/cc， 氬氣1.3 3kPa。此時的電性特性爲1100V，11.0A。又，作 爲比較例，作爲在放電媒體含有鐵元素的紫外線放電燈， 準備與上述實施例相同規格，且以鐵元素0.03mg/CC，碘 化鉈0.1 Omg/cc的比率所封入的紫外線放電燈，又，針對 於此些將測定壽命初期與壽命末期的分光特性的結果表币 於第9圖及第1 0圖。表示於第1 〇圖的比較例的情形’利 用碘化鉈的波長 352nm，3 65 nm’ 3 78nm的光譜成分降低 很大，會縮短壽命，惟表示於第9圖的本發明的實施例的 情形，可確認分光特性在壽命初期與壽命末期幾乎沒有變 化，而具有穩定的分光特性。 【圖式簡單說明】 第1圖是表示本發明的第1貫施形態的紫外線放電燈 的前視圖。 第2圖是表示上述實施形態的分光特性的圖表。 第3圖是表示在上述實施形態的紫外線放電燈中’比 較钍鎢電極與鈽鎢電極的壽命的圖表。 第4圖是表示上述實施形態的燈座部分的分解圖。 第5圖是表示上述實施形態的燈座部分的裝設說明圖 〇 第6 ( a )圖至第6 ( c )圖是表示利用上述實施形態 -16- 200832491 的銘含有量的發光特性的變化的圖表。 第7圖是表示上述實施形態與習知例的發光分離特性 的比較表。 第8圖是表示利用上述實施形態的鉈含有量的發光特 性的變化的表。 第9圖是表示上述實施形態的壽命初期與壽命末期的 發光特性的圖表。 第1〇圖是表示習知例的壽命初期與壽命末期的發光 特性的圖表。 【主要元件符號說明】 5 2 :紫外線放電燈 520 :氣密性容器 521 ， 522 ：電極 523， 524 ：燈座 525，526 :外部燈座 -17-Moreover, as a comparative example 1, the ultraviolet discharge of the comparative example 1 enclosed by the ratio of mercury l. 〇9 mg / cc and the monument of 0.218 mg / cc (Mr = 5) was also prepared for the airtight container of the same specification. light. Further, as Comparative Example 2, the airtight container of the same specification was also prepared to be sealed at a ratio of mercury 〇9 mg/CC -13 to 200832491 and cesium iodide 0.00 1 mg/cc (M=1 0 90 ). The ultraviolet discharge lamp of Comparative Example 2. Thus, the ultraviolet discharge lamps of Example 2, Comparative Example 1, and Comparative Example 2 were light-discharged, and the results of measuring the spectral characteristics were shown in Figures 6(a) to 6(c), as in the sixth (a) In the case of the second embodiment of the present invention, the illuminating lamp characteristics of the 352 nm, 378 nm spectrum are efficiently radiated without high-illuminance and no light splitting or illuminance deviation (separated light emission) toward the lamp axis direction. . On the other hand, as shown in Fig. 6(b), in Comparative Example 1 in which Mr <10 is determined, a phase difference occurs in the illuminance on the left and right sides of the lamp, and separation light emission occurs. Therefore, by making the ratio of mercury to cesium iodide, Mr < 10, the difference in atomic radius between mercury and ruthenium in the discharge plasma is such that diffusion of the enclosure is less likely to occur, and separation luminescence occurs in the axial direction. To. Further, in Comparative Example 2 of Mr>200, as shown in Fig. 6(c), the spectrum of ruthenium was small, and only the luminescence of mercury was generated, and the ultraviolet ray discharge lamp having the characteristics of cesium iodide could not be used. (Example 3) As an example (T1) of the present invention, an ultraviolet discharge lamp which does not contain an iron element in a discharge medium is prepared, and an outer diameter of 27.5 which is an electrode such as tungsten is placed inside a gas-tight container made of quartz. Mm, thickness: 1.5 mm, and the length of the lamp as shown in Table i of Fig. 7 is enclosed as a discharge medium with argon gas at a ratio of 1.68 mg/cm of mercury and 0.02 mg/cc of cesium iodide. A plurality of ultraviolet discharge lamps. In addition, as a comparative example (F1 + T1 ), it is prepared as an ultraviolet discharge lamp containing iron element in a discharge medium, and an outer diameter of 27.5 mm of an electrode such as tungsten is placed inside an airtight container made of stone-14-200832491. , thickness 1.5mm. Further, as the discharge medium and the argon gas, the lamp lengths shown in the table are different in the ratio of mercury 1.0 mg/cc, iron element 〇.〇3 mg/cc, cesium iodide.i〇mg/cc. A plurality of airtight containers. In addition, it was investigated whether or not there was separation light emission. In the case of the comparative example, the separation light was not observed at a lamp length of 200 mm, but in the case of a length of 500 mm, the light emission became unstable, and the lamp of 750 mm or more was recognized as being separated. Glowing. In this case, in the case of the embodiment of the present invention, any one of the lamp lengths of 200 mm to 2300 mm was not recognized as having separate light emission, and stable discharge light emission was obtained. (Example 4) An electrode having a tungsten or the like disposed inside a quartz airtight container was prepared to have an outer diameter of 27.5 mm, a thickness of 1.5 mm, and a light emission length of L 1 800 mm, and a discharge medium together with argon gas, mercury. 1.68 mg/cc, and as shown in Table 2 of Fig. 8, the content of cesium iodide was made into a plurality of different types of ultraviolet discharge lamps, and the presence or absence of separation luminescence and the appropriate ultraviolet illuminance were examined. As a result, even if the same mercury content is contained, the separation luminescence is not obtained, and the desired ultraviolet illuminance condition can be obtained, and the content of cesium iodide can be confirmed to be 0.012 mg or more, and it is appropriate to use 〇.〇32 mg/cc. . (Embodiment 5) An ultraviolet discharge lamp according to an embodiment of the present invention has an outer diameter of 27.5 mm of a tube, a thickness of 1.5 mm, and an ultraviolet transmittance of 100 mm of light emission length. 15-200832491 Two ends of an airtight container made of quartz The electrode formed by encapsulating tungsten is sealed with mercury and cesium iodide as a luminescent metal together with argon gas inside the hermetic container. The amount of encapsulation is 1.6 mg/cc of mercury, cesium iodide (K 03 2 mg/cc, argon gas of 1.3 3 kPa. The electrical property at this time is 1100 V, 11.0 A. Further, as a comparative example, it contains iron element in a discharge medium. The ultraviolet discharge lamp is prepared in the same manner as in the above-described embodiment, and the ultraviolet discharge lamp enclosed by a ratio of iron element 0.03 mg/cc and cesium iodide 0.1 Omg/cc is used, and the initial life and life are measured for these. The results of the spectroscopic characteristics at the end of the period are shown in Fig. 9 and Fig. 10. The case of the comparative example shown in Fig. 1 'Using the wavelength of 352 nm of cesium iodide, the spectral composition of 3 65 nm' 3 78 nm is greatly reduced. In the case of the embodiment of the present invention shown in Fig. 9, it can be confirmed that the spectral characteristics have almost no change at the beginning of life and the end of life, and have stable spectral characteristics. [Simplified illustration] Fig. 1 The front view of the ultraviolet discharge lamp of the first embodiment of the present invention is shown in Fig. 2. Fig. 2 is a graph showing the spectral characteristics of the above embodiment. Fig. 3 is a view showing the comparison of the tungsten germanium in the ultraviolet discharge lamp of the above embodiment. Electricity Fig. 4 is an exploded view showing the socket portion of the above embodiment. Fig. 5 is a view showing the mounting of the socket portion of the above embodiment. Fig. 6(a) Fig. 6(c) is a graph showing changes in luminescence characteristics by the intrinsic content of the above-described embodiment-16-200832491. Fig. 7 is a comparison table showing luminescence separation characteristics of the above-described embodiment and the conventional example. Fig. 8 is a table showing changes in the light-emitting characteristics of the cerium content according to the above embodiment. Fig. 9 is a graph showing the light-emitting characteristics at the beginning of life and the end of life in the above embodiment. Fig. 1 is a view showing a conventional example. Graph of luminescence characteristics at the beginning of life and at the end of life. [Explanation of main component symbols] 5 2 : UV discharge lamp 520: Hermetic container 521, 522: Electrode 523, 524: Lamp holder 525, 526: External lamp holder -17-