200810297 九、發明說明：200810297 IX. Invention Description:
技術領域 本發明係有關於一種燈裝置，特別是有關於一種易於 5 讀取透過接合器安裝於燈座固持器之燈的個體資訊之燈裝 置。 【Tltr 】 背景技術 以往’由於組合有短弧型放電燈與凹面鏡的光照射裝 10置可有效利用放射光’因此多用於半導體或液晶基板之曝 光。當搭配凹面鏡使用時’可利用旋轉橢球面鏡將放射光 會聚於一點，並可利用拋物面鏡使其成為平行光線，因此 廣泛地被利用。為了得到前述特性，必須使短弧型放電燈 之光點正確地位於凹面鏡的焦點。故，如第9圖所示，係將 15 具有凸緣型燈座之短弧型放電燈安裝於中央部具有開口之 凹面鏡。 接著，一面參照第9圖一面簡單地說明習知燈之安裝方 法。放電燈之燈座結構體20包含有：以黏著劑6固定於密封 管部5之具有圓筒部21的燈座；薄板部4〇;接合部3〇;及 20固定螺絲44。燈座更具有圓板部22與突出部23，而圓板部 22具有孔部24。又，燈座固持器5〇具有用以固持接合部3〇 之孔部56。接合部30具有用以放入突出部23之孔部31及用 以固疋固疋螺絲44的螺紋部34。首先，將用以調整轴方向 位置的薄板部40放置於接合部3〇，再將突出部23放入孔部 5 200810297 31，接著，以固定螺絲44將圓板部22固定於接合部30。由 於孔部24較固定螺絲44的直徑大，因此可調整燈轴的位 置。以下，舉出幾個關於前述習知技術的例子。 專利文獻1所揭示之「用以安裝燈之接合器」係用以調 5整燈裝置之XYZ位置的圓板狀者。燈座結構體之凸緣部設 有外徑較4個固定螺絲大的孔（即，「螺栓孔」）。當鬆開固定 螺絲時，便可對於凸緣部朝XYZ方向調整圓板狀接合器。 在製造燈時，一旦相對於燈座之凸緣部將光點調整至一定 位置，只需將放電燈安裝於光源裝置，即可使放電燈之光 10 點經常位於一定的位置。 專利文獻2所揭示之「放電燈」係具有可防止燈泡因燈 泡發亮時之熱而破裂、損壞之凸緣型燈座者。藉由設於凸 緣狀接合器之側面的固定螺絲，可調整放電燈之光點位 置’並且即使交換放電燈，仍可使光點位於一定的位置。 15 又’發亮時的熱係通過凸緣型燈座的通風口擴散出去。由 於熱不會充滿於凸緣型燈座附近，因此可防止放電燈的破 裂、損壞。 另一方面，為了判斷放電燈是否適合燈裝置，所進行 的是將識別用的標誌附加於放電燈上。關於此點，本申請 20人係提出將用以讀取顯示於燈座之燈資料的讀取裝置設於 燈座固持器的專利文獻3，其係自動判斷安裝於燈裝置之放 電燈是否為合適的放電燈，且在該放電燈為正確的放電燈 曰π貧理放電燈之使用狀態及使用履歷者。即使是具有前 述燈資料之燈襞置，仍必須藉由調整設於燈之燈座之接合 6 200810297 器與燈座固持器的位置關係，使燈之光點位於正確的位置。 【專利文獻1】特開平06-250060號公報 【專利文獻1】特開2002-140978號公報 【專利文獻1】特願2006-100000號說明書 5 【發明内容】 發明揭示 發明欲解決之問題 然而，習知之燈裝置具有以下問題。當透過接合器將 顯示有燈資料之燈安裝於燈座固持器時，接合器會造成阻 1〇礙，使得讀取裝置無法讀取燈資料。當事先使燈資料顯示 於接合器，再分離接合器且安裝於其他燈時，燈資料與放 電燈則無法對應。 本發明之目的在於解決前述習知之問題，並提供一種 即使使用用以調整光點位置之接合器於燈裝置，仍可讀取 15 燈座之燈資料的燈裝置。 解決課題之手段 為了解決前述課題，本發明係—種燈裝置，包含有： 燈，係具有用以機械性地固持構成放射光之發光部的燈泡 並供給電力的燈座者，·接合部，係安裝於前述燈座者；及 燈座固持器，係透過前述接合部固持前述燈座者。又，前 述燈裝置之燈座具有顯示有關於燈之燈資料的燈資料顯示 部，而前述接合部具有不遮蔽前述燈資料顯示部的窗部。 又’燈座固持器具有通過前述窗部讀取前述燈資料的讀取 裝置。再者，前述燈資料至少係燈屬性資料與設定方法資 7 200810297 料之其中一者，而燈屬性資料包含製造年月日、製造者姓 名、製造場所、製造線、燈型、品種編號、批號及識別編 號中一者’而且設定方法資料包含額定電流、額定電壓、 冷卻條件、相對裝置之安裝方向及使用限制時間中一者。 5又’燈資料的I員示形式係可以光學讀取者，且係條碼、2元 碼、文字、記號、符號、圖形、圖樣等任一種類或多種類 的組合。 發明效果 藉由前述結構，即使使用用以調整光點位置之接合器 10於燈裝置’仍可讀取燈座之燈資料，因此可正確地管理燈 之使用狀態及使用履歷等。 【實施冷式】 實施發明之最佳型態 以下，一面參照第1圖〜第8圖，一面詳細說明實施本發 !5 明之最佳型態。 [實施例1] 本發明之實施例丨係通過接合部之窗從軸方向讀取燈 座之軸方向端面之燈資料的燈裝置。 20 弟1圖係本發明實施例1之燈裝置的外觀圖。第1(A)圖 係具有於®板狀接合部設有窗部之燈座結構體之放電燈的 正視圖。第1⑻圖係圓板狀接合部之端面側的圖。在第碉 中’陽極1係正極側的電極’而陰極2係負極側的電極。内 部導棒3係支撐且電連接電極的構件。金屬別係電連接内 部導棒與外部導棒的構件。密封管部5係密封具有電極之放 8 200810297 2工間w且隔外部的部份。外部導棒7係電連接燈座與金屬 狀構件。發光部9係利用電極間之放電而發光的部分。燈 ’包10係由發光部、密封管部及燈座所構成之燈管。 燈座19係用以電連接且機械性地固持燈泡的構件。燈 5 ,結構體20係由圓筒部、圓板部、突出部、薄板部、接: 邛及固定螺絲所構成之燈座構件。圓筒部21係燈座之大徑 部:圓板部22係連設於圓筒部之構件。突出部攻系燈座之 小徑部。端面25係圓板部之端面。接合部3〇係用以定位之 構件。孔部31係接合部之孔。燈資料顯示部32係顯示有燈 1〇貝料之部分。窗部36係接合部之窗。子匕部37係用以定位之 孔。薄板部40係用以調整軸方向之位置的板。固定螺絲料 係調整垂直於軸方向之位置的螺絲。 如第1(A)圖所示，具有燈座結構體之放電燈包含有： 由發光部9及2個密封管部5所構成之燈泡1〇;於發光部中 15配置成相對面之陽極1及陰極2;支撐前述陽極丨及陰極2並 進行通電之内部導棒3;外部導棒7;及以導電性^ 連接並緊密地密封前述内部導棒3與外部導棒7之密封管部 5。再者，密封管部5之一端固定有燈座19，而另一端 有燈座結構體20。燈庫結構體20包含有：用以固持密封^ 20之圓筒部21;連設於圓筒部之圓板部22;連接於圓板部^ 面25之突出部23;柢接於圓板部端面25之圓板狀薄板部 40;抵接於薄板之圓板狀接合部30;及將圓板部22、薄板 部40及接合部30固定成一體的固定螺絲44。 如第1(B)圖所示，在燈座結構體中，接合部川具有用 9 200810297 以定位之孔部37、接合部之孔部Μ及接合部之窗部36。圓 板部之端面25從用以定位之孔部37露出於接合部之端面方 向。又，突出部23嵌於接合部之孔部31内。 第2圖係燈座固持器安裝有燈座結構體之狀態的縱向 截面圖，且紐座結構雜於料狀接合部設有窗部者。 在第2圖中，黏著劑6係將燈座固定於密封部之黏著劑。燈 座固持㈣係用以固持燈座之構件。孔部％係用以固持燈 f之孔部。凸部57制以定位之凸部。燈資料讀取部52係 光學的讀取顯示於燈座之燈資料的裝置。 如第2圖所示，固定於燈裝置之燈座固持器50包含有： 用以固持燈座之孔部56;用以定位之凸师，係位於與接 合部之用以定位之孔部37相對之位置者；及燈資料讀取部 ，，伽設於孔部56之底面者。藉由使财窗部％之接合 15 2U用以固持燈座之孔部56，可將放電燈固持於燈 衣置除此之外，亦可利用螺絲等將燈座結構體固定於燈 座口持力且座結構體2 0之圓板部的端面2 5設有燈資料顯 32 板部4〇與接合部3()設有薄板部之窗部及接合 P之固口P36 X ’燈資料顯示部32露出於接合部之端面方 向。 第3圖係燈裝置之變形例，且該圖係於圓板狀接合部設 ^窗部之燈座結構體的外觀圖。第3(A)圖係燈座結構體部 刀之正視BI而第3(B)圖係圓板狀接合部之端面側的仰視 圖。在第巾’銀焊料8係電連接且機齡地連接燈座與 外部導棒的構件。燈座結構體120係由圓筒部、圓板部、突 10 200810297 出部、薄板部、接合部及固定螺絲所構成之燈座構件。又， 接合部130係用以定位之構件，窗部136係接合部之窗。如 第3圖所示，設於燈座結構體120之接合部130的窗部136亦 可朝接合部130之圓周部開啟。 5 第4圖係燈裝置之變形例，且該圖係燈座固持器安裝有 燈座結構體之狀態的縱向截面圖，而且該燈座結構體係於 圓板狀接合部設有窗部者。第4(A)圖係燈中心軸之縱向截 面圖，而第4(B)圖係第4(A)圖之B-B截面圖。在第4圖中， 窗部146係薄板部之窗。燈座固持器150係用以固持燈座之 10 構件。孔部156係燈座固持器之用以固持燈座之孔部。凸部 157係用以定位之凸部。如第4圖所示，接合部的窗部136亦 可朝接合部130之圓周部開啟。又，接合部130嵌合於燈座 固持器之用以固持燈座的孔部156。 接著，說明具有前述結構之本發明實施例1之燈裝置的 15 功能與作用。首先，一面參照第1圖，一面說明燈裝置之功 能的概要。燈之燈座結構體的燈資料顯示部顯示有關於燈 之資料。又，通過將燈座固定於燈座固持器之接合部的窗 部’可從外部看見燈資料顯示部。之後，將讀取裝置設於 燈座固持器，並透過接合部之窗部讀取燈資料顯示部之資 20料。燈資料係以條碼、2元碼、文字、記號、符號、圖形、 圖樣#表示製造年月日、製造者名、製造場所、製造線、 放電燈之型式、品種編號、批號及識別編號等的燈屬性與 額定電流 '額定電壓、冷卻條件、相對裝置之安裝方向及 使用限制時間等的設定方法等。 11 200810297 10 15 2〇 接著，一面參照第2圖一面說明燈資料的讀取方法。由 於燈資料顯示部32露出於接合部之端面方向，因此可從燈 座結構體之圓板部端面側以目測確認燈資料顯示部。故， 放電燈之使用者可得知放電燈的出處，並可確認該燈係適 合燈裝置之放電燈。由於燈資料顯示部設於不可從放電燈 分離的圓筒部端面，因此即使從燈座結構體分離接合部， 亦不會有4資料與燈本體不對應的情況。之後，將可讀取 設於圓板部之端面25的燈資_示部32之資料的燈資料讀 取^52。又於且座固持裔50。接著，自動判斷安裝於燈裝置 之放電燈是否為合適的放電燈。若為正確的放電燈的話， 便管理放電燈之使用狀態與使用履歷。 接著#月使位置一致的方法。燈座結構體之圓板 部22上具有4個調整孔。薄板部4〇於與圓板部之調整孔對應 的位置亦具有内徑較圓板部之調整孔的内徑大的調整孔。 ^部3〇於與圓板部之調整孔對應的位置具有螺紋部。首 孔m純貫穿圓板部之調整孔與薄板部之調整 敕固定螺絲44係擰人接合物之螺紋部。又，圓板 夕卜押大、1一± 的内徑較固定螺絲44之螺紋部的 定^门° #_固定螺純暫時將接合部30固 、圓板部22時，可使接合 構體之軸的方向。 丨自由地移動於垂直於燈座結 接著，使用製造燈時之 板部相對於接合部移動 果’使固持發光管之圓 調整至所要的位置。之後^於接合部將亮點(陰極前端） 争緊固定螺絲，並對於圓板部 12 200810297 固疋接合部之位置，藉此可將接合部固定於垂直於燈座軸 的方向。又，藉由變更薄板部4〇之厚度，可調整放電燈光 點的軸方向位置。當不須調整軸方向時，亦可不使用薄板 部40。這樣一來，即使交換放電燈，仍可使亮點位於一定 5 的位置。 藉由將位於與接合部之孔部37相對面之位置之用以定 位的凸部57設於燈座固持器，可將安裝放電燈於燈座固持 器時之圓周方向的位置規定於一義。故，可輕易地將放電 燈安裝於燈裝置，並使燈資料顯示部與讀取部相對面。其 10他使燈資料顯示部與燈資料讀取部相對面的方法係將用以 定位之凸部設於燈座固持器之用以固持燈座之孔部底面， 並使其與接合部之窗部嵌合，而可得到同樣的效果。接合 部之窗部與用以定位之孔部之開口大小與位置不同。這樣 一來，可將放電燈燈軸附近的方向規定於一義。 15 由於圓板部與接合部之位置關係因XYZ調整機構而一 定’因此燈資料顯示部32與接合部之窗部36之位置關係也 必須一定。故，接合部之窗部最好大於燈資料顯示部之面 積。又，由於接合部之孔部31與突出部23之位置關係亦為 一定，因此接合部之孔部31以大於突出部23為佳。 20 接著，說明讀取燈資料的方法。燈資料讀取部52具有 LED等的光源及CCD等的影像辨識裝置，且前述光源係配 置成可阻斷由放電燈放射之光等外光。首先，光學的讀取 燈資料顯示部之顯示内容，並儲存於燈裝置之燈資料記憶 裝置。由於藉由遮蔽外光可防止光雜訊，因此讀取裝置可 13 200810297 正確地辨識燈資料，並4防止讀取裝置因放電燈之強力紫 外線而惡化。藉由使讀取燈資料之讀取裴置與放電燈之燈 資料顯示部相對面，並遮蔽外光，可防止雜訊光之侵入， 並可正確地讀取燈資料，旅且可防止由放電燈放射之紫外 5 線射入，故不會使光學的讀取裝置惡化。 燈資料係每一放電燈的屬性資料與放電燈的設定方法 資料。每一放電燈的屬性係製造年月日、放電燈的製造者 名、製造場所、製造線、放電燈的型式、品種編號、批號、 識別編號等。又，燈顯示有其中一個或多數個的組合。放 1〇電燈的設定方法係額定電流、額定電壓、冷卻條件、相對 裝置之安裝方向等用以在燈裝置中使用放電燈的條件。 又，燈顯示有其中一個或多數個的組合。燈資料顯示部之 顯示形式係適當地組合文字、記號、符號、圖形及圖樣等。 除了條碼及2元碼之外，亦可以文字（符號）或製造公司的標 15 遠專的圖形顯不。 由於燈資料顯示部之結構係將放電燈之屬性（製造年 月曰、製造者名、製造場所、製造線、燈型、品種編號、 批號及識別編號等）及設定方法(額定電流、額定電壓、冷卻 條件及對於裝置之安裝方向）顯示於不可從放電燈分離之 20燈座，並在安裝或交換放電燈時讀取燈裝置之燈資料，因 此，放電燈之使用者可得知該放電燈的出4，並可確認其 為適合前述燈裝置之放電燈^。 燈資料係以光之反射率的差異、正反射部分及漫射部 分之組合表示。前述燈資料顯示部之形成方法具有切削、 200810297 雕刻、刻印、及蝕刻等，亦可藉由照射雷射光等形成。又， 亦可事先形成凹部於燈座結構體之圓板部的端面，並使其 與顯示有燈資料的板嵌合，以進行安裝。 接著，一面參照第3圖與第4圖一面說明變形例。前述 5 變形例有效於欲擴大燈資料顯示部32之面積的情況。首 先，使窗部136延長至接合部之圓周部，並形成切口的形 狀。接著，設置用以定位之凸部157遮蔽照射於燈資料讀取 部52之光，以完全遮蔽燈之光。即，藉由設置用以定位之 凸部157於用以固持燈座之孔部156，並使用以定位之凸部 10 157嵌入窗部136，以遮蔽照射於燈資料讀取部52之光。這 樣一來，可將使燈座結構體嵌合於燈座固持器時的圓周方 向規定於一義，因此可輕易地將放電燈安裝於燈裝置，並 使燈資料顯示部32與燈資料讀取部52相對面。 如前所述，由於本發明實施例1之燈裝置係構成通過接 15 合部之窗從軸方向讀取燈座之軸方向端面之燈資料的結 構，因此即使燈座透過接合器安裝於燈座固持器，仍可輕 易讀取燈資料。 [實施例2] 本發明實施例2係通過接合部之窗從半徑方向讀取燈 20 座部之圓周面之燈資料的燈裝置。 第5圖係本發明實施例2之燈裝置，且該圖係於凸緣狀 接合部設有窗部之燈座結構體部分的外觀圖。第5(A)圖係 具有燈座結構體部分之放電燈的正視圖，而第5(B)圖係凸 緣狀接合部之端面側的俯視圖。在第5圖中，圓筒部121係 15 200810297 燈座之大徑部，且係用以固持密封管之部分。孔部131係接 合部之孔。螺紋部134係接合部之用以定位的螺孔。固定螺 絲144係使圓筒部與接合部形成一體之用以定位的螺絲。 又，燈座結構體220係由圓筒部、圓板部、突出部、薄板部、 5 接合部及固定螺絲所構成之燈座構件。接合部230係用以定 位之構件，且係配設於圓筒部周圍的凸緣狀部分。窗部236 係接合部的窗。 如第5圖所示，放電燈之密封管部5的其中一端固定有 燈座19，而另一端固定有燈座結構體220，且該放電燈係具 10 有於凸緣狀接合部設有窗部之燈座結構體者。燈座結構體 220包含有：用以固持密封管之圓筒部121;連設於圓筒部 之端面的突出部23;配設於圓筒部周圍之凸緣狀接合部 230;及藉由擰進螺紋部134而使前述圓筒部121與接合部 230形成一體的固定螺絲144。燈座結構體220之圓筒部121 15 的圓周側面設有燈資料顯示部32。圓筒部嵌於接合部之孔 部131，並由固定螺絲44固持。接合部230之重疊於燈資料 顯示部32的部分設有窗部236，而燈資料顯示部32露出於接 合部之圓周部方向。 第6圖係燈座固持器安裝有燈座結構體之狀態的縱向 20 截面圖，且該燈座結構體係於凸緣狀接合部設有窗部者。 在第6圖中，孔部256係用以固持燈座之孔部。如第6圖所 示，固定於燈裝置之燈座固持器250具有用以固持燈座之孔 部256及配設於孔部之圓筒狀側面之燈資料讀取部52。藉由 使設有窗部236之接合部230嵌合於用以固持燈座之孔部 16 200810297 256，可將放電燈固持於燈裝置。又，凸緣狀接合部23〇之 圓筒部的圓周方向宜具有3個位於均等位置之螺紋部134。 又，固定螺絲144擰入螺紋部134。 第7圖係燈裝置之變形例，且該圖係於凸緣狀接合部設 5有窗部之燈座結構體的外觀圖。第7(A)圖係接合部330之窗 部336亦可朝發光部之反對侧開啟之燈座結構體32〇的概念 圖，而第7(B)圖係接合部430之窗部436亦可朝發光部側開 啟之燈座結構體420的概念圖。 第8圖係燈裝置之變形例，且該圖係燈座固持器安裝有 10 燈座結構體之狀悲的縱向截面圖’而且該燈座結構體係於 凸緣狀接合部設有窗部者。第8(A)圖係燈中心軸之縱向截 面圖，而第8(B)圖係第8(A)圖之B-B截面圖。如第8圖所示， 接合部之窗部436亦可朝發光管側之方向開啟。又，接合部 430嵌合於燈座固持器之用以固持燈座之孔部456。用以固 15 持燈座之孔部456的圓筒狀内側面設有用以定位之凸部 457 ° 接著，說明具有前述結構之本發明實施例2之燈裝置的 — 功能與作用。首先，一面參照第5圖，一面說明燈裝置之功 能的概要。燈座結構體220之圓筒部121的圓周側面設有燈 20資料顯示部32。接合部230之重疊於燈資料顯示部32的部分 設有窗部236。又，由於燈資料顯示部32露出於接合部之圓 周側方向，因此可從燈座結構體220之半徑方向以目測確認 燈資料顯示部32。故，放電燈之使用者可得知放電燈的出 處，並可確認該燈係適合燈裝置之放電燈。又，由於燈資 17 200810297 料顯示部設於不可從放電燈分離之圓筒部的端面，因此即 使從燈座結構體分離接合部，亦不會有燈資料與燈本體不 對應的情況。 接著，一面參照第6圖，一面說明定位的方法。在凸緣 5 狀接合部230之孔部131嵌有燈座結構體之圓筒部121的狀 態下，固定螺絲144係抵接於圓筒部之圓周側面。這樣一 來，可將接合部固定於圓筒部。接著，使用製造燈時之特 殊工模，使圓筒部相對於接合部移動，以相對於接合部將 亮點（陰極前端）調整至所要的位置。之後，擰緊3個固定螺 10 絲144，並對於圓筒部121固定接合部230之位置。這樣一 來，即使交換放電燈，仍可使亮點位於一定的位置。藉由 使燈裝置之燈資料讀取部52與燈資料顯示部32相對面，可 以燈資料讀取部52正確地得知燈資料。 接著，一面參照第7圖與第8圖，一面說明使窗部形成 15 切口形狀之例。該例有效於欲擴大燈資料顯示部之面積的 情況。在第7(A)圖所示之例中，由於完全沒有遮光，因此 防止雜訊光或由放電燈放射之紫外線射入讀取裝置之效果 較小。在該情況下，藉由加工燈座固持器之形狀，若可完 全遮光的話，則效果佳。又，藉由使用以定位之凸部457嵌 20 入窗部436，可將安裝放電燈於燈座固持器時的圓周方向規 定於一義。因此，可輕易地將放電燈安裝於燈裝置，並使 燈資料顯示部與讀取部相對面。在以上之例中，係舉具有 電極之放電燈進行說明，但亦可應用於i素燈、加熱燈、 準分子燈及發光二極體等。 18 200810297 如前所述，由於本發明實施例2之燈裝置係構成通過接 合部之窗從半徑方向讀取燈座部之圓周面之燈資料的結 構，因此即使燈座透過接合器安裝於燈座固持器，仍可輕 易讀取燈資料。 5 產業上利用之可能性 本發明之燈裝置最適合作為以接合器將短弧型放電燈 之燈座安裝於燈座固持器，並讀取燈資料來管理燈之燈裝 置，而該短弧型放電燈係搭配凹面鏡進行半導體或液晶基 板之曝光等者。本發明之燈裝置亦適合作為管理其他燈之 10 燈裝置。 |：圖式簡單說明】 第1(A)、（B)圖係本發明實施例1之燈裝置的外觀圖。 第2圖係本發明實施例1之燈裝置中，燈座固持器安裝 有於圓板狀接合部設有窗部之燈座結構體之狀態的縱向截 15 面圖。 第3(A)、（B)圖係本發明實施例1之燈裝置的變形例， 且該圖係於圓板狀接合部設有窗部之燈座結構體的外觀 圖。 第4(A)、（B)圖係本發明實施例1之燈裝置的變形例， 20 且該圖係燈座固持器安裝有於圓板狀接合部設有窗部之燈 座結構體之狀態的縱向截面圖。 第5(A)、（B)圖係本發明實施例2之燈裝置中，於凸緣 狀接合部設有窗部之燈座結構體部分的外觀圖。 第6圖係本發明實施例2之燈裝置中，燈座固持器安裝 19 200810297 有於凸緣狀接合部設有窗部之燈座結構體之狀態的縱向截 面圖。 第7(A)、（B)圖係本發明實施例2之燈裝置的變形例， 且該圖係於凸緣狀接合部設有窗部之燈座結構體的外觀 5 圖。 第8(A)、（B)圖係本發明實施例2之燈裝置的變形例， 且該圖係燈座固持器安裝有於凸緣狀接合部設有窗部之燈 座結構體之狀態的縱向截面圖。 第9圖係顯示習知燈之定位方法的概念圖。 10 【主要元件符號說明】 1…陽極 22···圓板部 2…陰極 23...突出部 3...内部導棒 24··.孔部 4...金屬箔 25 · · ·端面 5...密封管部 30…接合部 6...黏著劑 31…孔部 7...外部導棒 32··.燈資料顯示部 8··.銀/焊料 34···螺紋部 9…發光部 35...端面 10...燈泡 36…窗部 19…燈座 37···孔部 20...燈座固持器 40···薄板部 21·.·圓筒部 44…固定螺絲 20 200810297 46…窗部 50…燈座固持器 52.. .燈資料讀取部 56···孔部 57.. .凸部 120…燈座結構體 121.. .圓筒部 130…接合部 131…孔部 134…螺紋部 136…窗部 144.. .固定螺絲 146…窗部 150…燈座固持器 156···孔部 157···凸部 220…燈座結構體 230…接合部 236…窗部 250.. .燈座固持器 256···孔部 320…燈座結構體 330···接合部 336…窗部 420…燈座結構體 430.. .接合部 436.. .窗部 450.. .燈座固持器 456···孔部 457…凸部 21BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp device, and more particularly to a lamp device which is easy to read individual information of a lamp mounted to a lamp holder by a connector. [Tltr] BACKGROUND ART Conventionally, since a light-emitting device 10 in which a short-arc type discharge lamp and a concave mirror are combined can effectively use the emitted light, it is often used for exposure of a semiconductor or a liquid crystal substrate. When used with a concave mirror, the spheroidal mirror can be used to converge the light at a point, and it can be made into a parallel ray by using a parabolic mirror, so it is widely used. In order to obtain the aforementioned characteristics, it is necessary to make the spot of the short arc type discharge lamp correctly located at the focus of the concave mirror. Therefore, as shown in Fig. 9, a short arc type discharge lamp having a flange type lamp holder is attached to a concave mirror having an opening at the center. Next, a conventional lamp mounting method will be briefly described with reference to Fig. 9. The socket structure 20 of the discharge lamp includes a socket having a cylindrical portion 21 fixed to the sealing tube portion 5 by an adhesive 6, a thin plate portion 4A, a joint portion 3A, and 20 fixing screws 44. The socket has a disc portion 22 and a projection 23, and the disc portion 22 has a hole portion 24. Further, the socket holder 5 has a hole portion 56 for holding the joint portion 3''. The engaging portion 30 has a hole portion 31 for receiving the protruding portion 23 and a threaded portion 34 for fixing the fixing screw 44. First, the thin plate portion 40 for adjusting the axial direction position is placed on the joint portion 3, and the protruding portion 23 is placed in the hole portion 5 200810297 31. Then, the disc portion 22 is fixed to the joint portion 30 by the fixing screw 44. Since the hole portion 24 has a larger diameter than the fixing screw 44, the position of the lamp shaft can be adjusted. Hereinafter, several examples regarding the aforementioned conventional techniques will be cited. The "splicer for mounting a lamp" disclosed in Patent Document 1 is a disk-shaped member for adjusting the XYZ position of the entire lamp device. The flange portion of the socket structure is provided with a hole having a larger outer diameter than the four fixing screws (i.e., "bolt hole"). When the fixing screw is loosened, the disc-shaped adapter can be adjusted in the XYZ direction with respect to the flange portion. When the lamp is manufactured, once the spot is adjusted to a certain position with respect to the flange portion of the socket, it is only necessary to mount the discharge lamp to the light source device, so that the light of the discharge lamp is often at a certain position. The "discharge lamp" disclosed in Patent Document 2 has a flange type lamp holder that can prevent the bulb from being broken and damaged by the heat when the lamp is bright. The spot position of the discharge lamp can be adjusted by the fixing screws provided on the side of the flange-shaped adapter, and even if the discharge lamp is exchanged, the spot can be positioned at a certain position. 15 The thermal system at the time of 'lighting' spreads out through the vents of the flanged lamp holder. Since the heat does not fill the vicinity of the flange type lamp holder, the discharge lamp can be prevented from being broken or damaged. On the other hand, in order to judge whether or not the discharge lamp is suitable for the lamp device, it is performed to attach the identification mark to the discharge lamp. In this regard, the applicant of the present application proposes a patent document 3 for providing a reading device for reading lamp data displayed on a lamp holder in a lamp holder, which automatically determines whether or not the discharge lamp mounted on the lamp device is A suitable discharge lamp, and the discharge lamp is a correct discharge lamp 曰 π poor discharge lamp use state and use history. Even in the case of a lamp unit having the above lamp data, the position of the lamp holder must be adjusted to the correct position by adjusting the positional relationship between the lamp holder and the lamp holder. [Patent Document 1] JP-A-2002-140978 (Patent Document 1) Japanese Patent Application No. 2006-100000 The conventional lamp device has the following problems. When the lamp displaying the lamp data is mounted to the lamp holder by the adapter, the adapter causes a hindrance, so that the reading device cannot read the lamp data. When the lamp data is displayed on the adapter in advance, and the adapter is separated and mounted on other lamps, the lamp data does not correspond to the discharge lamp. SUMMARY OF THE INVENTION An object of the present invention is to solve the aforementioned problems and to provide a lamp device which can read the lamp data of 15 lamp holders even if the lamp device for adjusting the position of the spot is used. Means for Solving the Problems In order to solve the above problems, the present invention relates to a lamp device including a lamp holder for mechanically holding a bulb constituting a light-emitting portion of the emitted light and supplying electric power, and a joint portion. The lamp holder is mounted on the lamp holder; and the lamp holder is a holder for holding the lamp holder through the joint portion. Further, the lamp holder of the lamp device has a lamp data display portion for displaying lamp data of the lamp, and the joint portion has a window portion for not shielding the lamp data display portion. Further, the lamp holder has a reading device for reading the lamp data through the window portion. Furthermore, the lamp data is at least one of the lamp attribute data and the setting method, and the lamp attribute data includes the date of manufacture, the name of the manufacturer, the manufacturing place, the manufacturing line, the lamp type, the item number, and the batch number. And one of the identification numbers' and the setting method data includes one of a rated current, a rated voltage, a cooling condition, a mounting direction of the opposing device, and a use restriction time. 5 The 'I-member's form of the lamp data is optically readable, and is a combination of any one or more of a bar code, a 2-ary code, a character, a symbol, a symbol, a figure, a pattern, and the like. Advantageous Effects of Invention According to the above configuration, even if the lamp unit for reading the lamp holder can be read by the adapter 10 for adjusting the position of the spot, the lamp use state, the use history, and the like can be accurately managed. [Implementation of the cold type] BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to Figs. 1 to 8 . [Embodiment 1] An embodiment of the present invention is a lamp device that reads lamp data of an end surface of an axial direction of a socket from an axial direction through a window of a joint portion. 20 is a view showing the appearance of a lamp device according to Embodiment 1 of the present invention. Fig. 1(A) is a front view of a discharge lamp having a socket structure in which a window portion is provided in a plate-like joint portion. Fig. 1(8) is a view showing the end face side of the disk-shaped joint portion. In the second embodiment, the anode 1 is the electrode on the positive electrode side and the cathode 2 is the electrode on the negative electrode side. The inner guide bar 3 is a member that supports and electrically connects the electrodes. The metal is a member that electrically connects the inner guide bar to the outer guide bar. The sealed tube portion 5 seals the portion having the electrode and the outside of the chamber. The outer guide bar 7 electrically connects the lamp holder to the metal member. The light-emitting portion 9 is a portion that emits light by discharge between electrodes. The lamp package 10 is a lamp tube composed of a light-emitting portion, a sealed tube portion, and a socket. The socket 19 is a member for electrically connecting and mechanically holding the bulb. Lamp 5 The structure 20 is a socket member composed of a cylindrical portion, a circular plate portion, a protruding portion, a thin plate portion, and a fixing screw and a fixing screw. The cylindrical portion 21 is a large diameter portion of the socket: the disc portion 22 is a member that is connected to the cylindrical portion. The protruding part attacks the small diameter part of the lamp holder. The end face 25 is an end face of the disc portion. The joint 3 is a member for positioning. The hole portion 31 is a hole of the joint portion. The lamp data display unit 32 displays a portion of the lamp 1 material. The window portion 36 is a window of the joint portion. The sub-portion 37 is used to position the hole. The thin plate portion 40 is a plate for adjusting the position in the axial direction. The fixing screw is used to adjust the screw perpendicular to the axial direction. As shown in Fig. 1(A), the discharge lamp having the socket structure includes: a bulb 1 composed of the light-emitting portion 9 and the two sealed tube portions 5; and an anode disposed in the opposite portion of the light-emitting portion 15 1 and a cathode 2; an inner guide rod 3 supporting the anode yoke and the cathode 2 and energizing; an outer guide rod 7; and a sealing tube portion which is electrically connected and tightly seals the inner inner rod 3 and the outer inner rod 7 5. Further, the sealed tube portion 5 has a socket 19 fixed at one end and a socket structure 20 at the other end. The lamp library structure 20 includes a cylindrical portion 21 for holding the sealing member 20, a circular plate portion 22 connected to the cylindrical portion, a protruding portion 23 connected to the circular plate portion 25, and a circular plate. A disk-shaped thin plate portion 40 of the end surface portion 25; a disk-shaped joint portion 30 that abuts against the thin plate; and a fixing screw 44 that fixes the disk portion 22, the thin plate portion 40, and the joint portion 30 to each other. As shown in Fig. 1(B), in the socket structure, the joint portion has a hole portion 37 which is positioned by 9 200810297, a hole portion 接合 of the joint portion, and a window portion 36 of the joint portion. The end surface 25 of the disc portion is exposed from the hole portion 37 for positioning to the end surface of the joint portion. Further, the protruding portion 23 is fitted into the hole portion 31 of the joint portion. Fig. 2 is a longitudinal sectional view showing a state in which the socket holder is mounted with the socket structure, and the button structure is provided with a window portion in the material joint portion. In Fig. 2, the adhesive 6 is an adhesive for fixing the socket to the sealing portion. The lamp holder is held (4) to hold the lamp holder. The hole portion % is for holding the hole portion of the lamp f. The convex portion 57 is formed with a convex portion that is positioned. The lamp data reading unit 52 is a device that optically reads the lamp data displayed on the lamp holder. As shown in FIG. 2, the lamp holder 50 fixed to the lamp device includes: a hole portion 56 for holding the lamp holder; and a protrusion for positioning, the hole portion 37 for positioning with the joint portion The relative position; and the lamp data reading unit are provided on the bottom surface of the hole portion 56. By fixing the cover portion 15 2U for holding the hole portion 56 of the socket, the discharge lamp can be held in the lamp coat, and the lamp holder structure can be fixed to the lamp holder by screws or the like. The end face 2 5 of the disc portion of the seat structure 20 is provided with a lamp data display 32 plate portion 4 〇 and the joint portion 3 () is provided with a thin plate portion window portion and a joint P of the joint P 36 X 'light data display The portion 32 is exposed in the direction of the end face of the joint portion. Fig. 3 is a perspective view showing a modification of the lamp unit in the disk-shaped joint portion. Fig. 3(A) is a bottom view of the end face side of the disk-shaped joint portion in the front view of the base portion of the base portion of the base structure. In the first towel, the silver solder 8 is electrically connected to the member of the lamp holder and the outer guide bar. The socket structure 120 is a socket member composed of a cylindrical portion, a circular plate portion, a projection 10200810297, a thin plate portion, a joint portion, and a fixing screw. Further, the joint portion 130 is a member for positioning, and the window portion 136 is a window for the joint portion. As shown in Fig. 3, the window portion 136 provided at the joint portion 130 of the socket structure 120 can also be opened toward the circumferential portion of the joint portion 130. 5 Fig. 4 is a modification of the lamp device, and the figure is a longitudinal sectional view showing a state in which the lamp holder structure is attached to the lamp holder structure, and the lamp holder structure is provided with a window portion at the disk-shaped joint portion. Fig. 4(A) is a longitudinal cross-sectional view of the central axis of the lamp, and Fig. 4(B) is a B-B cross-sectional view of Fig. 4(A). In Fig. 4, the window portion 146 is a window of a thin plate portion. The lamp holder 150 is used to hold the 10 members of the lamp holder. The hole portion 156 is a hole portion of the socket holder for holding the socket. The convex portion 157 is a convex portion for positioning. As shown in Fig. 4, the window portion 136 of the joint portion can also be opened toward the circumferential portion of the joint portion 130. Further, the joint portion 130 is fitted to the hole portion 156 of the socket holder for holding the socket. Next, the function and action of the lamp unit of the first embodiment of the present invention having the above-described configuration will be described. First, an outline of the function of the lamp device will be described with reference to Fig. 1. The lamp data display portion of the lamp socket structure displays information about the lamp. Further, the lamp data display portion can be seen from the outside by fixing the socket to the window portion of the joint portion of the socket holder. Thereafter, the reading device is placed on the lamp holder, and the material of the lamp data display portion is read through the window portion of the joint portion. The lamp data is a bar code, a 2-yuan code, a character, a symbol, a symbol, a graphic, and a pattern # indicating the date of manufacture, the name of the manufacturer, the manufacturing location, the manufacturing line, the type of the discharge lamp, the serial number, the batch number, and the identification number. Setting methods such as lamp properties and rated current 'rated voltage, cooling conditions, mounting direction of the device, and use limit time. 11 200810297 10 15 2〇 Next, the method of reading the lamp data will be described with reference to Fig. 2 . Since the lamp data display portion 32 is exposed in the end surface direction of the joint portion, the lamp data display portion can be visually confirmed from the end surface side of the disk portion of the socket structure. Therefore, the user of the discharge lamp can know the source of the discharge lamp and can confirm that the lamp is suitable for the discharge lamp of the lamp unit. Since the lamp data display portion is provided on the end surface of the cylindrical portion that cannot be separated from the discharge lamp, even if the joint portion is separated from the socket structure, there is no case where the data does not correspond to the lamp body. Thereafter, the lamp data of the material of the lamp-display unit 32 provided on the end surface 25 of the disc portion is read. Also fixed in the seat of the 50. Next, it is automatically judged whether or not the discharge lamp mounted on the lamp unit is a suitable discharge lamp. If it is a correct discharge lamp, it will manage the use status and usage history of the discharge lamp. Then #月 makes the position consistent. The disc portion 22 of the socket structure has four adjustment holes. The thin plate portion 4 has an adjustment hole having an inner diameter larger than the inner diameter of the adjustment hole of the circular plate portion at a position corresponding to the adjustment hole of the circular plate portion. The portion 3 has a threaded portion at a position corresponding to the adjustment hole of the disc portion. The adjusting hole and the thin plate portion of the first hole m pure through the circular plate portion are adjusted. The fixing screw 44 is a threaded portion of the human joint. Further, when the circular plate is large and the inner diameter of the one-±± is smaller than the fixed portion of the screw portion of the fixing screw 44, the fixing member 30 can secure the joint portion 30 and the disc portion 22, and the joint body can be formed. The direction of the axis. The crucible is free to move perpendicular to the lamp holder junction. Next, the plate portion is moved relative to the joint portion when the lamp is manufactured to adjust the circle of the holding arc tube to a desired position. Then, at the joint, the bright spot (cathode front end) is tightened to the fixing screw, and the position of the joint portion of the circular plate portion 12 200810297 is fixed, whereby the joint portion can be fixed in a direction perpendicular to the socket shaft. Further, by changing the thickness of the thin plate portion 4, the axial position of the discharge light spot can be adjusted. The thin plate portion 40 may not be used when it is not necessary to adjust the axial direction. In this way, even if the discharge lamp is exchanged, the bright spot can be located at a certain 5 position. By providing the projection 57 for positioning at the position opposite to the hole 37 of the joint portion to the socket holder, the position in the circumferential direction when the discharge lamp is mounted on the socket holder can be defined. Therefore, the discharge lamp can be easily attached to the lamp unit, and the lamp data display portion faces the reading portion. 10: The method for making the lamp data display portion and the lamp data reading portion face each other, wherein the convex portion for positioning is disposed on the bottom surface of the hole holder for holding the lamp holder, and is connected to the joint portion The window portion is fitted to obtain the same effect. The size and position of the opening of the window portion of the joint portion and the hole portion for positioning are different. In this way, the direction near the lamp shaft of the discharge lamp can be defined. Since the positional relationship between the disc portion and the joint portion is determined by the XYZ adjusting mechanism, the positional relationship between the lamp data display portion 32 and the window portion 36 of the joint portion must also be constant. Therefore, the window portion of the joint portion is preferably larger than the area of the lamp data display portion. Further, since the positional relationship between the hole portion 31 of the joint portion and the projecting portion 23 is also constant, the hole portion 31 of the joint portion is preferably larger than the projecting portion 23. 20 Next, a method of reading the lamp data will be described. The lamp data reading unit 52 includes a light source such as an LED and an image recognition device such as a CCD, and the light source is disposed to block external light such as light emitted from the discharge lamp. First, the display content of the optical reading data display portion is optically stored and stored in the lamp data memory device of the lamp device. Since the optical noise can be prevented by shielding the external light, the reading device can correctly recognize the lamp data and prevent the reading device from being deteriorated by the strong ultraviolet rays of the discharge lamp. By making the reading device of the reading lamp data face the lamp data display portion of the discharge lamp and shielding the external light, the intrusion of the noise light can be prevented, and the lamp data can be correctly read, and the travel can be prevented. The ultraviolet 5 line of the discharge lamp emits light, so the optical reading device is not deteriorated. The lamp data is the attribute data of each discharge lamp and the setting method of the discharge lamp. The characteristics of each discharge lamp are the date of manufacture, the name of the manufacturer of the discharge lamp, the manufacturing location, the manufacturing line, the type of the discharge lamp, the item number, the batch number, the identification number, and the like. Also, the light display has a combination of one or more of them. The setting method of the discharge lamp is the condition for using the discharge lamp in the lamp device, such as the rated current, the rated voltage, the cooling condition, and the mounting direction of the relative device. Also, the light display has a combination of one or more of them. The display format of the lamp data display unit is a combination of characters, symbols, symbols, graphics, patterns, and the like as appropriate. In addition to the bar code and the 2 yuan code, it can also be displayed in text (symbol) or in the design of the company's standard. The structure of the lamp data display unit is the attribute of the discharge lamp (manufacturing date, manufacturer name, manufacturing location, manufacturing line, lamp type, product number, lot number, identification number, etc.) and setting method (rated current, rated voltage) The cooling condition and the mounting direction of the device are shown in the 20 lamp holders which are not separable from the discharge lamp, and the lamp data of the lamp device is read when the discharge lamp is installed or exchanged, so that the user of the discharge lamp can know the discharge. The lamp is out 4, and it can be confirmed that it is a discharge lamp suitable for the above lamp device. The lamp data is represented by a combination of a difference in reflectance of light, a specular reflection portion, and a diffuse portion. The method for forming the lamp data display portion includes cutting, 200810297 engraving, engraving, etching, and the like, and may be formed by irradiating laser light or the like. Further, a concave portion may be formed in advance on the end surface of the disc portion of the socket structure, and fitted to a plate on which the lamp material is displayed for mounting. Next, a modification will be described with reference to FIGS. 3 and 4. The above fifth modification is effective in the case where the area of the lamp data display unit 32 is to be enlarged. First, the window portion 136 is extended to the circumferential portion of the joint portion, and the shape of the slit is formed. Next, the convex portion 157 for positioning is shielded from the light irradiated to the lamp data reading portion 52 to completely shield the light of the lamp. That is, the light illuminating the lamp data reading portion 52 is shielded by providing the convex portion 157 for positioning the hole portion 156 for holding the lamp holder and the window portion 136 by the positioning convex portion 10 157. In this way, the circumferential direction when the socket structure is fitted to the socket holder can be defined, so that the discharge lamp can be easily attached to the lamp device, and the lamp data display portion 32 and the lamp data can be read. The portion 52 is opposite. As described above, since the lamp device of the first embodiment of the present invention constitutes a structure for reading the lamp data of the end surface of the lamp holder from the axial direction by the window of the 15-part portion, even if the lamp holder is attached to the lamp through the adapter The holder can still easily read the lamp data. [Embodiment 2] In the second embodiment of the present invention, the lamp device for reading the lamp data of the circumferential surface of the lamp portion 20 from the radial direction through the window of the joint portion is used. Fig. 5 is a view showing a lamp device according to a second embodiment of the present invention, and is a view showing a portion of a socket structure portion in which a window portion is provided in a flange-like joint portion. Fig. 5(A) is a front view of the discharge lamp having the socket structure portion, and Fig. 5(B) is a plan view showing the end face side of the flange-like joint portion. In Fig. 5, the cylindrical portion 121 is a large diameter portion of the lamp holder, and is used to hold a portion of the sealing tube. The hole portion 131 is a hole of the joint portion. The threaded portion 134 is a threaded hole for positioning of the joint portion. The fixing screw 144 is a screw for integrally positioning the cylindrical portion and the engaging portion. Further, the socket structure 220 is a socket member composed of a cylindrical portion, a disc portion, a protruding portion, a thin plate portion, a 5 joint portion, and a fixing screw. The joint portion 230 is a member for positioning and is provided with a flange-like portion around the cylindrical portion. The window portion 236 is a window of the joint portion. As shown in FIG. 5, one end of the sealed tube portion 5 of the discharge lamp is fixed with a socket 19, and the other end is fixed with a socket structure 220, and the discharge lamp holder 10 is provided at the flange-like joint portion. The structure of the lamp holder of the window. The socket structure 220 includes: a cylindrical portion 121 for holding the sealing tube; a protruding portion 23 connected to the end surface of the cylindrical portion; a flange-like joint portion 230 disposed around the cylindrical portion; The screw portion 134 is screwed into, and the cylindrical portion 121 and the joint portion 230 are integrally formed with a fixing screw 144. A lamp data display portion 32 is provided on the circumferential side surface of the cylindrical portion 121 15 of the socket structure 220. The cylindrical portion is fitted in the hole portion 131 of the joint portion and held by the fixing screw 44. The portion of the joint portion 230 that overlaps the lamp data display portion 32 is provided with a window portion 236, and the lamp data display portion 32 is exposed in the circumferential direction of the joint portion. Fig. 6 is a longitudinal cross-sectional view showing the state in which the socket holder is mounted with the socket structure, and the socket structure is provided with a window at the flange-like joint. In Fig. 6, the hole portion 256 is for holding the hole portion of the socket. As shown in Fig. 6, the socket holder 250 fixed to the lamp unit has a hole portion 256 for holding the socket and a lamp data reading portion 52 disposed on the cylindrical side surface of the hole portion. The discharge lamp can be held by the lamp unit by fitting the joint portion 230 provided with the window portion 236 to the hole portion 16 200810297 256 for holding the socket. Further, it is preferable that the circumferential direction of the cylindrical portion of the flange-like joint portion 23 has three screw portions 134 located at equal positions. Further, the fixing screw 144 is screwed into the screw portion 134. Fig. 7 is a view showing a modification of the lamp unit, and the figure is an external view of a socket structure in which a window portion is provided in a flange-like joint portion. The window portion 336 of the joint portion 330 of the seventh embodiment (A) may also be a conceptual view of the socket structure 32 开启 opened toward the opposite side of the light-emitting portion, and the window portion 436 of the joint portion 430 of the seventh (B) diagram is also A conceptual diagram of a socket structure 420 that can be opened toward the side of the light emitting portion. Fig. 8 is a modification of the lamp device, and the lamp holder is mounted with a longitudinal section of a ten-seat structure and the window structure is provided with a window at the flange-like joint . Fig. 8(A) is a longitudinal cross-sectional view of the central axis of the lamp, and Fig. 8(B) is a B-B cross-sectional view of Fig. 8(A). As shown in Fig. 8, the window portion 436 of the joint portion can also be opened in the direction of the light-emitting tube side. Further, the engaging portion 430 is fitted to the hole portion 456 of the socket holder for holding the socket. The cylindrical inner side surface for fixing the hole portion 456 of the socket is provided with a convex portion 457 for positioning. Next, the function and action of the lamp device of the second embodiment of the present invention having the above configuration will be described. First, an outline of the function of the lamp device will be described with reference to Fig. 5. A lamp 20 data display portion 32 is provided on the circumferential side surface of the cylindrical portion 121 of the socket structure 220. A portion of the joint portion 230 that overlaps the lamp data display portion 32 is provided with a window portion 236. Further, since the lamp data display portion 32 is exposed in the circumferential direction of the joint portion, the lamp data display portion 32 can be visually confirmed from the radial direction of the socket structure 220. Therefore, the user of the discharge lamp can know the outlet of the discharge lamp and can confirm that the lamp is suitable for the discharge lamp of the lamp device. Further, since the lamp display unit 17 200810297 is provided on the end surface of the cylindrical portion which cannot be separated from the discharge lamp, even if the joint portion is separated from the socket structure, the lamp data does not correspond to the lamp body. Next, the method of positioning will be described with reference to Fig. 6. In a state where the cylindrical portion 121 of the socket structure is fitted into the hole portion 131 of the flange-like joint portion 230, the fixing screw 144 abuts against the circumferential side surface of the cylindrical portion. In this way, the joint portion can be fixed to the cylindrical portion. Next, using the special tool for manufacturing the lamp, the cylindrical portion is moved relative to the joint portion to adjust the bright spot (cathode front end) to a desired position with respect to the joint portion. Thereafter, the three fixing screws 10 are tightened, and the position of the joint portion 230 is fixed to the cylindrical portion 121. In this way, even if the discharge lamp is exchanged, the bright spot can be located at a certain position. By illuminating the lamp data reading unit 52 of the lamp unit with the lamp data display unit 32, the lamp data reading unit 52 can accurately recognize the lamp data. Next, an example in which the window portion is formed into a slit shape will be described with reference to Figs. 7 and 8. This example is effective for expanding the area of the lamp data display portion. In the example shown in Fig. 7(A), since there is no light shielding at all, the effect of preventing the noise light or the ultraviolet light emitted from the discharge lamp from entering the reading device is small. In this case, by processing the shape of the lamp holder, it is effective if it is completely shielded from light. Further, by inserting the window portion 436 into the convex portion 457 for positioning, the circumferential direction when the discharge lamp is mounted on the lamp holder can be defined. Therefore, the discharge lamp can be easily attached to the lamp unit with the lamp data display portion facing the reading portion. In the above examples, discharge lamps having electrodes are described, but they can also be applied to i-lamps, heat lamps, excimer lamps, and light-emitting diodes. 18 200810297 As described above, since the lamp device of the second embodiment of the present invention constitutes a structure for reading the lamp data of the circumferential surface of the socket portion from the radial direction through the window of the joint portion, even if the lamp holder is attached to the lamp through the adapter The holder can still easily read the lamp data. 5 Industrial Applicability The lamp device of the present invention is most suitable as a lamp device for mounting a lamp holder of a short arc type discharge lamp to a lamp holder by an adapter, and reading the lamp data to manage the lamp, and the short arc The type of discharge lamp is used for exposure of a semiconductor or a liquid crystal substrate with a concave mirror. The lamp unit of the present invention is also suitable as a 10 lamp unit for managing other lamps. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 (A) and (B) are views showing the appearance of a lamp device according to a first embodiment of the present invention. Fig. 2 is a longitudinal cross-sectional view showing a state in which a lamp holder is attached to a socket structure in which a disk portion is provided with a window portion in a lamp holder according to a first embodiment of the present invention. 3(A) and 3(B) are diagrams showing a modification of the lamp device of the first embodiment of the present invention, and the figure is an external view of a socket structure in which a window portion is provided in a disk-shaped joint portion. 4(A) and 4(B) are diagrams showing a modification of the lamp device according to the first embodiment of the present invention, and 20 is a lamp holder structure in which a window-shaped joint portion is provided with a window portion. A longitudinal section of the state. 5(A) and (B) are views showing the appearance of a lamp holder structure portion in which a window portion is provided in a flange-like joint portion in the lamp device according to the second embodiment of the present invention. Fig. 6 is a longitudinal cross-sectional view showing a state in which a socket structure of a window portion is provided in a flange-like joint portion in a lamp device according to a second embodiment of the present invention. Figs. 7(A) and 7(B) are diagrams showing a modification of the lamp device of the second embodiment of the present invention, and the figure is a view showing the appearance of the socket structure in which the window portion is provided in the flange-like joint portion. 8(A) and 8(B) are diagrams showing a modification of the lamp device of the second embodiment of the present invention, and the lamp holder holder is attached to the lamp holder structure in which the window portion is provided with the flange portion. Longitudinal section view. Fig. 9 is a conceptual diagram showing a positioning method of a conventional lamp. 10 [Description of main component symbols] 1...anode 22···round plate 2...cathode 23...protrusion 3...internal guide bar···hole part 4...metal foil 25 · · ·end surface 5...sealing pipe portion 30...joining portion 6...adhesive agent 31...hole portion 7...external guide bar 32··.light data display portion 8··.silver/solder 34···thread portion 9 ...light emitting portion 35...end surface 10...light bulb 36...window portion 19...lamp holder 37·.. hole portion 20...lamp holder 40···thin plate portion 21·.·cylindrical portion 44... Fixing screw 20 200810297 46...window 50...lamp holder 52.. lamp data reading unit 56···hole portion 57.. convex portion 120...lamp base structure 121.. cylindrical portion 130... Joint portion 131: hole portion 134...thread portion 136...window portion 144.. fixing screw 146...window portion 150...lamp holder 156···hole portion 157··· convex portion 220...lamp base structure 230... Joint portion 236...window portion 250.. lamp holder 256.. hole portion 320... socket structure 330··· joint portion 336... window portion 420... socket structure 430.. joint portion 436. .. window portion 450.. lamp holder 456··· hole portion 457... convex portion 21