TW200529272A - X-ray generating device - Google Patents

X-ray generating device Download PDF

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Publication number
TW200529272A
TW200529272A TW094116340A TW94116340A TW200529272A TW 200529272 A TW200529272 A TW 200529272A TW 094116340 A TW094116340 A TW 094116340A TW 94116340 A TW94116340 A TW 94116340A TW 200529272 A TW200529272 A TW 200529272A
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TW
Taiwan
Prior art keywords
ray
ray tube
generating device
output window
fixed
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TW094116340A
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Chinese (zh)
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TWI322444B (en
Inventor
Norimasa Kosugi
Toshihiko Hino
Masanari Ogawa
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Hamamatsu Photonics Kk
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05GX-RAY TECHNIQUE
    • H05G1/00X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/02Constructional details
    • H05G1/04Mounting the X-ray tube within a closed housing
    • H05G1/06X-ray tube and at least part of the power supply apparatus being mounted within the same housing
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05GX-RAY TECHNIQUE
    • H05G1/00X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/02Constructional details
    • H05G1/025Means for cooling the X-ray tube or the generator
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05FSTATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
    • H05F3/00Carrying-off electrostatic charges
    • H05F3/04Carrying-off electrostatic charges by means of spark gaps or other discharge devices

Abstract

An X-ray generating device comprises a front panel provided at a protective case and having an open portion facing an output target; and a base plate to which a voltage generating portion for driving an X-ray tube is fixed, wherein the X-ray tube is fixed in such a manner that the open portion of the front panel is opposed to the output target and the base plate is fixed to the front panel.

Description

200529272 (1) 九、發明說明 【發明所屬之技術領域】 本發明係關於利用靜電除去等而將產生X射線的X射 線管收容於殼體內之X射線產生裝置。 【先前技術】 以日本國之特公平7-50594號公報做爲先前即存在之 X射線管之一例。在該公報所揭示的X射線管中,絲線利 用通電而炙熱之時,會放出電子束,該電子束使用聚焦用 閘極等而被加速,並以高速衝撞標靶,因而該材料固有的 X射線從標靶放射。然後,該X射線從在標靶前方離間設 置之X射線透過窗而向外部放出。這種X射線管變成高 溫故’其冷卻係從固定於標靶之外圍器(燈管)突出之標 靶環’以自然空氣冷卻而達成。然後,經由X射線管之冷 卻’而維持X射線之產生效率及防止標靶之破壞。並且, 該型之X射線管係與電壓產生部一起被收容在保護殼體內 。其它先前即存在之X射線管之一例方面,有日本特開平 ]0 - 1 064 63號公報、日本特開平6_2 5 I 73 5號公報、及美國 專利公告第4384360號。 【發明內容】 在標靶與X射線透過窗爲分離式之X射線管中,外圍 器本身很大,爲了達成自然空氣冷卻,必須在外圍器周圍 有大的空間,其結果會招致保護殼體的大型化。相對於此 200529272 (2) ,具有標祀與X射線透過窗(輸出窗)爲一體之輸出保持 窗的X射線管係爲小型,因而外圍器(燈管)之直徑小’ 現實上難以固定於保護殼體內。 本發明之目的在提供一種X射線產生裝置,其可將x 射線管確實地固定於保護殼體內。 本發明之X射線產生裝置,係將具有導電性及熱傳導 性之輸出窗保持部固定在燈管的前端之X射線管,及驅動 Φ 該X射線管之電壓產生部收容在保護殻體內之X射線產 生裝置,其特徵爲:具備有:形成於輸出窗保持部的凸緣 部,及設置於保護殼體中,且具有輸出窗保持部可插入的 開口部的前面面板,及從形成上述前面面板的上述開口部 之壁面突出而與輸出窗保持部的凸緣部抵接之突起部,及 具有將抵接於突起部之凸緣部朝向突起部押壓,同時與形 成於開口部之壁面上之陰螺紋部內進行螺合之外螺紋的熱 傳導性之固定螺帽。 Φ 在該X射線產生裝置中,在將X射線管之輸出窗保持 部插入前面面板之開口部內之狀態下,將固定螺帽之外螺 紋部與形成於開口部之壁面上之陰螺紋部內進行螺合,而 將固定螺帽螺入。然後,將固定螺帽充分地鎖緊之後,設 置於X射線管之輸出窗保持部上之凸緣部,抵接於設置在 前面面板之突起部上,其結果,由固定螺帽將凸緣部朝向 突起部押壓,因而將X射線管固定在前面面板上。從而, 如此地利用固定螺帽之時,可簡單且確實地將X射線管固 定到保護殼體內。並且,利用熱傳導性之固定螺帽之時, -6- (3) (3)200529272 可提高從X射線管之輸出窗保持部向前面面板之熱傳導性 ,因而使X射線管之熱容易逃散,因此可維持X射線之 產生效率及防止X射線管之破壞。 並且,固定螺帽的內壁面與輸出窗保持部之外面接觸 時較佳。做成如此構成之時,可以簡單且確實地由固定螺 帽而將X射線管定位,並且更提高從設置於X射線管之 輸出窗保持部向前面面板之熱傳導性。因而,可更提高維 持X射線之產生效率及更可防止標靶之破壞。 並且,更具備有由固定螺帽的前端與輸出窗保持部之 凸緣部所挾持的橡膠環較佳。介入有橡膠環之時,X射線 管之凸緣部可對突起部以適當的押壓力而確實地固定。 並且,本發明之X射線產生裝置,更具備有可計測X 射線管中 X射線之照射累計時間,且將顯示已計測之X 射線之照射累計時間的信號輸出之計時器時較佳。X射線 管爲具有壽命的裝置之故,利用上述計時器,可正確地把 握X射線管中之X射線的照射累計時間,因此可適當地 施行X射線產生裝置之製品管理。 【實施方式】 以下,將參照附圖而詳細地說明本發明X射線產生裝 置之較佳實施形態。 如第1圖〜第3圖所示,X射線產生裝置I具有箱形 之保護殼體2,該保護殼體2係由熱傳導性之材料所製成 ,其係被分割成3個部分。即,保護殼體2係由不銹鋼製 • 200529272 (4) 成之四角柱形狀之殼本體部4、鋁製成之平板狀之前面面 板5、鋁製成之平板狀之背面面板6所形成,而構成3分 割型之箱狀。然後,在該保護殼體2中,其全長約爲]00 毫米,前面面板5之肉厚達到全長的1/10,將前面面板5 之肉厚做成大之時,可期待其具有高的散熱性。而,有鋁 製成的安裝用底部7固定在保護殻體2上。 在此種保護殻體2內,配置有利用產生的軟X射線將 # 靜電除去等之X射線管8。該X射線管8,如第4圖所示 ,具有科瓦(KOVAR )玻璃製之圓筒狀燈管9,在該燈管 9之末端形成具有排氣管10之桿座(stem) II,成圓筒狀 之科瓦金屬製之輸出窗保持部I 2熔融連接在燈管9之開 放端上。並且,在該輸出窗保持部12上有中央開口]2a 被塞住之圓板狀的輸出窗1 3以銀焊而固定,利用電子束 之衝擊而產生X射線的標靶】4被蒸鍍於輸出窗]3之內面 側上。 # 再者,有2支桿銷1 5、1 5固定在桿座1 1中,在燈管 9內設置有以預定電壓將電子束放出之陰極燈絲1 6。該陰 極燈絲1 6係固定在桿銷1 5的前端。並且,在一方之桿銷 ]5上,固定有成爲圓筒狀之不銹鋼製之聚焦件1 7。然後 ,該輸出窗保持部1 2係由科瓦金屬所形成,其熱傳導性 及導電性良好,而且電性地連接到接地之保護殼體2上, 因而成爲接地電位,其結果標靶]4亦被維持於接地電位 〇 在此處,從後述之電壓產生部2]將-9.5kV之高電位 200529272 (5) 供給到X射線管8之桿銷]5上之時,從陰極絲1 6將電子 束朝向標靶】4照射。此時,由於電子束之衝擊而從標靶 1 4放射軟X射線,該X射線係從輸出窗1 3放出到外部。 X射線管8在如此的構成之下,燈管9可做成直徑爲I 5 毫米、長度爲30毫米左右之大小,因而可做成全長爲40 毫米左右之小型的X射線管8。而在使用之時,小型的X 射線管8之標靶1 4變成高溫,爲了維持X射線之產生效 • 率及防止標靶之破壞,必須將標靶1 4的熱適當地逃散到 外部。 並且,如第1圖及第2圖所示,在保護殻體2內,收 容有載置於電路基板20上之電壓產生部21。該電壓產生 部2 1係爲將-9 · 5 kV之高電位供給到桿銷1 5上,而驅動X 射線管8者。首先,在電壓產生部21之低電壓產生部位 上的電位被提升到-1 kV,其次在高電壓產生部位上的電位 被提升到-9kV。如此的電壓產生部21之電路基板20係藉 • 由螺絲而固定到鋼製之底板2 2上。然後,從電壓產生部 之高電壓產生部位延伸之配線2 1 a被結線到X射線管8之 桿銷]5上,覆蓋桿銷1 5之圓筒狀之蓋1 9被固定在X射 線管8之燈管9上。而’在配線21 a及桿銷丨5結線後, 矽樹脂被充塡到蓋1 9內(參照第6圖)。而,在電路基 板20上設置有CPU 4〗,來自於頭部電路40之控制信號藉 由配線4 2 (參照第2圖)而輸出到電壓產生部2 ]。 在底板22之前端上一體地設置有成L字狀直立的第 ]安裝片2 2 a,在底板2 2之後端上亦一體地設置有成L字 -9- 200529272 (6) 狀直立的第2安裝片22b。然後,第1安裝片22a係被利 用來將電壓產生部2 1固定到保護殼體2,而第2安裝片 2 2 b係被利用將結線後之連接端子2 3安裝到電路基板2 0 之低電壓產生部位上。例如,第1安裝片22a藉由止動螺 絲2 5而以壓著於前面面板5上的方式固定,連接端子2 3 藉由鎖緊螺帽24而固定到第2安裝片22b上,背面面板6 藉由螺絲28而以壓著於第2安裝片22b上的方式固定。 因而,熱傳導性良好的鋁所製成之平板狀之前面面板5及 背面面板6,藉由鋼製之底板2 2而連結,因此背面面板6 亦可散熱,故可實現保護殼體2之高散熱性。 再者,在上述X射線管8被固定在保護殼體2之時, X射線管8被固定到鋁製之前面面板5上。如第1圖及第 5圖所示,在該前面面板5上形成有X射線管8之輸出窗 保持部]2可插入之圓柱狀的開口部26,在作出開口部26 的壁面2 6 a上,形成有朝向內方之環狀突起部2 7。然後, 一體地設置在輸出窗保持部1 2之前端的環狀之凸緣部1 8 抵接在該突起部2 7上。 並且,在開口部26之壁面26a上形成有陰螺紋部29 ,具有外螺紋30a之固定螺帽30螺合到該陰螺紋部29上 。該固定螺帽3 0係由熱傳導性良好的黃銅所製成,而且 其係由插入開口部2 6中之大致圓筒狀的筒身部3 1、及形 成六角螺帽之六角頭部3 2所形成。 在此處,在X射線管8之輸出窗保持邰]2插入前面 面板5的開口部2 6之狀態下,固定螺帽3 0係以其外螺紋 -10- 200529272 (7) 3 被螺合到陰螺紋部29上的方式而被鎖緊。然後,將固 定螺帽3 0充分地鎖緊之時,設置於X射線管8之輸出窗 保持部1 2上之環狀凸緣部1 8抵接在前面面板5之突起部 27上。其結果,由固定螺帽3〇之前端30b而將凸緣部18 朝向突起部2 7押壓,而使X射線管8被固定到前面面板 5上(參照第6圖)。從而,利用如此的固定螺帽3 0之時 ’可以簡單且確實地將X射線管8固定到保護殼體2內。 • 且’固定螺帽3 0係由熱傳導性良好的材質所形成之故 ’因此可提高從X射線管8之輸出窗保持部1 2向前面面 板5傳導之熱的傳導性,因而使近攝氏I 〇 〇度之輸出窗保 持部1 2的熱容易逃散,因此可維持X射線之產生效率及 防止標靶1 4之破損。 並且’在固定螺帽30之內壁面上形成有向內方突出 之定位面30c ’該定位面30c係接觸於輸出窗保持部12之 外面I 2 a上。因而,可以簡單且確實地由固定螺帽3 〇而 • 達成將X射線管8定位,並且更提高從X射線管8之輸 出窗保持部1 2向前面面板5之熱傳導性。因而,可更提 高維持X射線之產生效率及更可防止標靶]4之破壞。 並且,固定螺帽3 0之前端3 Ob與輸出窗保持部1 2之 凸緣部1 8將橡膠環3 4挾持之時,由於固定螺帽3 0之鎖 緊’可使凸緣部]8以適當的押壓力而確實地對突起部2 7 固定。並且,採用上述固定螺帽3 0之時,雖然前面面板5 之肉厚必然增大,但是伴隨於此,可期待前面面板5之高 散熱性。並且’熱傳導性良好的鋁所製成之平板狀之前面 -11- 200529272 (8) 面板5及背面面板6 ’藉由鋼製之底板2 2而連結’因此同 面面板6亦可散熱,故可實現保護殼體2之®散熱性。 在第7圖中,顯示有X射線產生裝置1及其周邊裝置 之構成。如該第7圖所示X射線產生裝置1藉由連接端子 23 (參照第1圖及第2圖)而連接到控制部50 ’控制部 5 〇連接到存取器6 0。控制部5 0爲了 X射線產生裝置1之 管理而由X射線產生裝置1之使用者所使用。並且,存取 器6 0係由X射線產生裝置1及控制部5 0之管理公司使用 〇 頭部電路40之CPU41藉由電壓產生部21 (參照第2 圖)而連接到X射線產生裝置1之中,該CPU41利用電 壓產生部2 1監視對X射線管8之通電時間之時,可計測 且積算X射線管8中之X射線的照射時間(即,X射線管 8的動作時間)。積算後之X射線管動作積算時間,與X 射線產生裝置1之製造序號、製造年月日、檢查者姓名、 X射線產生裝置1所固有的編碼等之資訊,一起由C P U 5 I 而記憶到頭部電路4 0內之未圖示的電氣式可抹除且可程 式化唯讀記憶體(EEPROM )中。 在控制部5 0中,設置有c P U 5 1、及顯示X射線管8 之動作狀態的監視燈52。CPU5 ]可計測且積算控制部50 的動作時間。積算後之控制部動作積算時間,與χ射線產 生裝置]之製造序號、製造年月日、檢查者姓名、X射線 產生裝置I所固有的編碼等之資訊,一起由C P U 5 1而記 fe、到控制部5 0內之未圖示的電氣式可抹除且可程式化唯 -12- 200529272 Ο) 讀記憶體(EEPROM )中。 在存取器60中,設置有··將頭部電路40之CPU41及 控制部50之CPU51統合管理之CPU61、顯示資訊之顯示 部62、及由輸入資訊用之鍵盤等所構成的輸入部63 ^如 第7圖所示,將X射線產生裝置1、控制部5 0、及存取器 60連接之時,管理公司的作業人員可將記憶於X射線產 生裝置1之EEPROM中的資訊、及記憶於控制部50之 # EEPROM中的資訊顯示在顯示部62上,這些資訊可由輸 入部6 3所輸入的資訊進行更新。 例如,僅更換X射線產生裝置1之情形,管理公司的 作業人員,可將記憶於控制部50之EEPROM中的更換前 之X射線產生裝置1之製造序號、製造年月日、檢查者姓 名、X射線產生裝置1所固有的編碼等之資訊,更新爲新 的X射線產生裝置1之製造序號、製造年月日、檢查者姓 名、X射線產生裝置1所固有的編碼等之資訊。 Φ 並且,管理公司的作業人員,可將由頭部電路40之 C Ρ ϋ 4 1所積算的X射線管8之動作積算時間、及由控制部 5 0之C P U 5 1所積算的控制部5 〇之動作積算時間顯示在顯 示部6 2上,因此可正確地把握X射線管8及由控制部5 〇 的動作積算時間。尤其,X射線管8爲具有壽命之製品, 因此正確地把握X射線管8之動作積算時間時,有可適當 地進彳了 X射線產生裝置1之製品管理的優點。200529272 (1) IX. Description of the invention [Technical field to which the invention belongs] The present invention relates to an X-ray generating device for storing an X-ray tube that generates X-rays in a housing by static electricity removal or the like. [Prior art] Take Japanese Patent No. 7-50594 as an example of X-ray tubes that existed before. In the X-ray tube disclosed in the publication, when a filament is heated by being energized, an electron beam is emitted, and the electron beam is accelerated using a focusing gate or the like and collides with a target at a high speed. The rays are emitted from the target. Then, the X-rays are emitted to the outside from an X-ray transmission window which is spaced in front of the target. This type of X-ray tube becomes high temperature, and its cooling is achieved by cooling the target ring from the peripheral (fixed tube) fixed to the target with natural air. Then, through the cooling of the X-ray tube, the X-ray generation efficiency is maintained and the target is prevented from being damaged. The X-ray tube of this type is housed in a protective case together with the voltage generating portion. Other examples of X-ray tubes that have existed before are Japanese Patent Application Laid-Open No. 0-1 064 63, Japanese Patent Application Laid-Open No. 6_2 5 I 73 5 and US Patent Publication No. 4384360. [Summary of the Invention] In an X-ray tube in which the target and the X-ray transmission window are separated, the peripheral device itself is very large. In order to achieve natural air cooling, there must be a large space around the peripheral device. As a result, a protective casing is required. Upsizing. In contrast to this, 200529272 (2), the X-ray tube system with an output holding window that is integrated with the X-ray transmission window (output window) is small, so the diameter of the peripheral device (light tube) is small. It is difficult to fix it in reality. Protective case. An object of the present invention is to provide an X-ray generating device that can securely fix an X-ray tube in a protective casing. The X-ray generating device of the present invention is an X-ray tube in which an output window holding portion having electrical and thermal conductivity is fixed to a front end of a lamp tube, and an X-ray tube driving the voltage generating portion of the X-ray tube is housed in a protective casing. The radiation generating device includes a flange portion formed in the output window holding portion, a front panel provided in the protective case, and an opening portion through which the output window holding portion can be inserted, and a front panel formed from the front surface. The wall surface of the opening portion of the panel protrudes and abuts against the flange portion of the output window holding portion, and has a protrusion portion that presses the flange portion abutting against the protrusion portion toward the protrusion portion and simultaneously with the wall surface formed in the opening portion. The heat-conducting fixing nut of the upper female thread is screwed into the external thread. Φ In this X-ray generating device, in a state where the output window holding portion of the X-ray tube is inserted into the opening portion of the front panel, the external thread portion of the fixed nut and the female thread portion formed on the wall surface of the opening portion are performed. Screw in, and screw in the fixed nut. Then, after the fixing nut is fully tightened, the flange portion provided on the output window holding portion of the X-ray tube abuts on the protrusion portion provided on the front panel. As a result, the fixing nut secures the flange The X-ray tube is fixed to the front panel by pressing the portion toward the protruding portion. Therefore, when the fixing nut is used in this way, the X-ray tube can be simply and surely fixed in the protective case. In addition, when using a thermally conductive fixing nut, -6- (3) (3) 200529272 can improve the thermal conductivity from the output window holder of the X-ray tube to the front panel, so that the heat of the X-ray tube can be easily escaped. Therefore, the X-ray generation efficiency can be maintained and the X-ray tube can be prevented from being damaged. Furthermore, it is preferable that the inner wall surface of the fixing nut is in contact with the outer surface of the output window holding portion. With such a configuration, the X-ray tube can be easily and surely positioned by the fixed nut, and the heat conductivity from the output window holding portion provided to the X-ray tube to the front panel can be further improved. Therefore, it is possible to further improve the efficiency of maintaining X-ray generation and to prevent damage to the target. Further, it is preferable to further include a rubber ring held by the front end of the fixed nut and the flange portion of the output window holding portion. When a rubber ring is interposed, the flange portion of the X-ray tube can be reliably fixed to the protruding portion with an appropriate pressing force. In addition, the X-ray generating device of the present invention is more preferably provided with a timer capable of measuring the cumulative time of X-ray irradiation in the X-ray tube and outputting a signal indicating the measured cumulative time of X-ray irradiation. Because the X-ray tube is a device with a long life, the above timer can accurately grasp the cumulative time of X-ray irradiation in the X-ray tube, so that the product management of the X-ray generating device can be appropriately performed. [Embodiment] Hereinafter, a preferred embodiment of the X-ray generating apparatus according to the present invention will be described in detail with reference to the drawings. As shown in Figs. 1 to 3, the X-ray generating device 1 has a box-shaped protective case 2 made of a thermally conductive material, which is divided into three parts. That is, the protective casing 2 is formed by a stainless steel body body made of stainless steel • 200529272 (4), a quadrangular pillar shape, a flat front panel 5 made of aluminum, and a flat rear panel 6 made of aluminum. It forms a 3-division box. Then, the total length of the protective casing 2 is about 00 mm, the meat thickness of the front panel 5 reaches 1/10 of the total length, and when the meat thickness of the front panel 5 is made large, it can be expected to have a high Heat dissipation. On the other hand, a mounting base 7 made of aluminum is fixed to the protective case 2. In such a protective case 2, an X-ray tube 8 for removing static electricity and the like using the generated soft X-rays is arranged. As shown in FIG. 4, the X-ray tube 8 includes a cylindrical lamp tube 9 made of Kovar glass, and a stem II having an exhaust tube 10 is formed at the end of the lamp tube 9. The output window holding portion I 2 made of a cylindrical Kovar metal is fused to the open end of the lamp tube 9. In addition, the output window holding portion 12 has a central opening] 2a The plugged disk-shaped output window 13 is fixed by silver welding, and an X-ray target is generated by the impact of an electron beam] 4 is vapor-deposited On the output window] 3. # Furthermore, two rod pins 15 and 15 are fixed in the rod base 11, and a cathode filament 16 for emitting an electron beam at a predetermined voltage is provided in the lamp tube 9. The cathode filament 16 is fixed to the front end of the rod pin 15. A focusing member 17 made of a cylindrical stainless steel is fixed to one of the rod pins 5. Then, the output window holding portion 12 is formed of Kovar metal, which has good thermal conductivity and electrical conductivity, and is electrically connected to the grounded protective case 2 and thus becomes a ground potential. The result is a target] 4 It is also maintained at the ground potential. Here, when a high potential of -9.5 kV 200529272 (5) is supplied to the rod pin of the X-ray tube 8 from the voltage generating unit 2 described later, 5 from the cathode wire 16 The electron beam is directed toward the target]. At this time, soft X-rays are emitted from the target 14 due to the impact of the electron beam, and the X-rays are emitted from the output window 13 to the outside. With the X-ray tube 8 having such a structure, the lamp tube 9 can be made into a size of I 5 mm in diameter and about 30 mm in length, so it can be made into a small X-ray tube 8 with a total length of about 40 mm. During use, the target 14 of the small X-ray tube 8 becomes high temperature. In order to maintain the efficiency of X-ray generation and prevent the target from being damaged, the heat of the target 14 must be properly escaped to the outside. As shown in FIGS. 1 and 2, a voltage generating unit 21 placed on the circuit board 20 is housed in the protective case 2. This voltage generating section 21 is for supplying a high potential of -9 · 5 kV to the rod pin 15 and driving the X-ray tube 8. First, the potential at the low-voltage generating portion of the voltage generating portion 21 is raised to -1 kV, and secondly, the potential at the high-voltage generating portion is raised to -9 kV. The circuit board 20 of the voltage generating unit 21 is fixed to the steel base plate 2 2 by screws. Then, the wiring 2 1 a extending from the high-voltage generating portion of the voltage generating portion is connected to the rod pin 5 of the X-ray tube 8, and the cylindrical cover 19 covering the rod pin 15 is fixed to the X-ray tube. 8 of the lamp 9. And after the wiring 21a and the rod pins 5 and 5 are connected, the silicone resin is filled in the cover 19 (refer to FIG. 6). A CPU 4 is provided on the circuit board 20, and a control signal from the head circuit 40 is output to the voltage generating unit 2 through the wiring 4 2 (see Fig. 2). An L-shaped upright mounting piece 2 2 a is integrally provided on the front end of the bottom plate 22, and an L-shaped -9- 200529272 (6) shaped upright second is integrally provided on the rear end of the bottom plate 22. 2Installing piece 22b. Then, the first mounting piece 22a is used to fix the voltage generating portion 21 to the protective case 2, and the second mounting piece 22b is used to mount the connection terminal 23 after wiring to the circuit board 20. Low voltage generation site. For example, the first mounting piece 22a is fixed to the front panel 5 by a set screw 25, and the connection terminal 2 3 is fixed to the second mounting piece 22b by a lock nut 24, and the rear panel 6 It is fixed to the 2nd attachment piece 22b by the screw 28. Therefore, the flat front panel 5 and the rear panel 6 made of aluminum with good thermal conductivity are connected by the steel base plate 2 2, so the rear panel 6 can also dissipate heat, so that the height of the protective casing 2 can be achieved. Heat dissipation. When the X-ray tube 8 is fixed to the protective case 2, the X-ray tube 8 is fixed to the front panel 5 made of aluminum. As shown in FIG. 1 and FIG. 5, an output window holding portion of the X-ray tube 8 is formed on the front panel 5. A cylindrical opening portion 26 that can be inserted is formed on the wall surface 2 6 a of the opening portion 26. An annular projection 27 is formed on the inner side. Then, a ring-shaped flange portion 18 integrally provided at the front end of the output window holding portion 12 abuts on the protruding portion 27. A female screw portion 29 is formed on the wall surface 26a of the opening portion 26, and a fixing nut 30 having an external thread 30a is screwed onto the female screw portion 29. The fixing nut 30 is made of brass having good thermal conductivity, and is composed of a substantially cylindrical barrel portion 3 1 inserted into the opening portion 26 and a hexagonal head portion 3 forming a hexagonal nut. 2 formation. Here, in the state where the output window of the X-ray tube 8 is held] 2 is inserted into the opening 26 of the front panel 5, the fixing nut 30 is screwed with its external thread -10- 200529272 (7) 3 It is locked to the female screw portion 29. Then, when the fixing nut 30 is fully tightened, the annular flange portion 18 provided on the output window holding portion 12 of the X-ray tube 8 abuts on the protruding portion 27 of the front panel 5. As a result, the X-ray tube 8 is fixed to the front panel 5 by pressing the flange portion 18 toward the protruding portion 27 by fixing the nut 30 to the front end 30b (see FIG. 6). Therefore, when using such a fixing nut 30 ', the X-ray tube 8 can be simply and surely fixed in the protective case 2. • Also, 'the fixed nut 30 is made of a material with good thermal conductivity', so the heat conductivity from the output window holding portion 12 of the X-ray tube 8 to the front panel 5 can be improved. The heat of the output window holding portion 12 at 100 ° is easy to escape, so it is possible to maintain the X-ray generation efficiency and prevent the target 14 from being damaged. And, a positioning surface 30c protruding inwardly is formed on the inner wall surface of the fixed nut 30. The positioning surface 30c is in contact with the outer surface I 2a of the output window holding portion 12. Therefore, it is possible to simply and surely fix the X-ray tube 8 by the fixing nut 30, and to further improve the thermal conductivity from the output window holding portion 12 of the X-ray tube 8 to the front panel 5. Therefore, it is possible to further improve the efficiency of maintaining X-ray generation and to prevent the destruction of the target]. In addition, when the front end 3 Ob of the fixing nut 30 and the flange portion 1 8 of the output window holding portion 12 hold the rubber ring 3 4, the flange portion can be caused by the locking of the fixing nut 30 0] 8 The projections 2 7 are reliably fixed with an appropriate pressing force. In addition, when the above-mentioned fixed nut 30 is adopted, the thickness of the front panel 5 is necessarily increased, but with this, the high heat dissipation of the front panel 5 can be expected. And 'Flat-shaped front surface made of aluminum with good thermal conductivity-11-200529272 (8) Panel 5 and back panel 6' connected by steel base plate 2 2 '. Therefore, the same panel 6 can also dissipate heat, so The heat dissipation of the protective case 2 can be achieved. Fig. 7 shows the configuration of the X-ray generating device 1 and its peripheral devices. As shown in FIG. 7, the X-ray generator 1 is connected to the control unit 50 'through the connection terminal 23 (refer to FIGS. 1 and 2) and the control unit 50 is connected to the accessor 60. The control unit 50 is used by the user of the X-ray generation device 1 for the management of the X-ray generation device 1. In addition, the accessor 60 is used by the management company of the X-ray generation device 1 and the control unit 50, and the CPU 41 of the head circuit 40 is connected to the X-ray generation device 1 by the voltage generation unit 21 (see FIG. 2). Among them, the CPU 41 can measure and accumulate the irradiation time of X-rays in the X-ray tube 8 (that is, the operation time of the X-ray tube 8) when the voltage generation unit 21 monitors the energization time to the X-ray tube 8. The accumulated operation time of the X-ray tube after the accumulation is stored in the CPU 5 I together with the information such as the manufacturing serial number of the X-ray generating device 1, the manufacturing date, the name of the inspector, and the code unique to the X-ray generating device 1. The electrical circuit (not shown) in the head circuit 40 is erasable and programmable in a read-only memory (EEPROM). The control unit 50 is provided with c P U 51 and a monitor lamp 52 that displays the operating state of the X-ray tube 8. CPU5] measures and accumulates the operating time of the control unit 50. The control unit's operation and accumulated time after the accumulation, together with the manufacturing serial number of the X-ray generation device], the manufacturing date, the name of the inspector, and the code unique to the X-ray generation device I are recorded by the CPU 51 and The electrical type (not shown) in the control part 50 can be erased and programmed (-12-200529272 〇) to read the memory (EEPROM). The accessor 60 is provided with a CPU 61 that integrally manages the CPU 41 of the head circuit 40 and the CPU 51 of the control section 50, a display section 62 for displaying information, and an input section 63 composed of a keyboard for inputting information, and the like. ^ As shown in FIG. 7, when the X-ray generating device 1, the control unit 50, and the accessor 60 are connected, the operator of the management company can store the information stored in the EEPROM of the X-ray generating device 1, and The information stored in #EEPROM of the control section 50 is displayed on the display section 62, and these information can be updated by the information input by the input section 63. For example, when only the X-ray generating device 1 is replaced, the operator of the management company may store the manufacturing serial number, manufacturing date, inspector name, The information such as the code unique to the X-ray generating device 1 is updated to the information such as the manufacturing serial number, the date of manufacture, the name of the inspector, the code unique to the X-ray generating device 1, and the like. Φ In addition, the operator of the management company can integrate the operation time of the X-ray tube 8 accumulated by C P ϋ 4 1 of the head circuit 40 and the control unit 5 accumulated by the CPU 51 of the control unit 50. Since the operation totalizing time is displayed on the display portion 62, the operation totalizing time of the X-ray tube 8 and the control portion 50 can be accurately grasped. In particular, the X-ray tube 8 is a product with a long life. Therefore, when the operation accumulation time of the X-ray tube 8 is accurately grasped, there is an advantage that the product management of the X-ray generating device 1 can be properly implemented.

但是,頭部電路4〇之CPU4]僅在接收到來自於控制 咅β 5 0之c P U 5 ]的X射線照射信號之情況下,才進行由X •13- 200529272 (10) 射線管8之X射線照射。因而,由X射線管8之X射線 照射,係由控制部5 0之CPU5 1的X射線照射信號所控制 。因此,控制部50之CPU5】在該控制部50之電源投入 之時僅實行一次之第8圖的識別資訊對照處理,以防範未 經許可之不恰當的X射線管8之X射線照射於未然。以 下,將說明第8圖的識別資訊對照處理。 在控制部50之電源投入之時,由CPU5I開始實行第 8圖的識別資訊對照處理。首先,將記憶於頭部電路40內 之EEPROM中的X射線產生裝置1之製造序號及固有的 編碼讀出(第8圖之S 1 )。然後,讀出的X射線產生裝 置1之製造序號,與記憶於控制部50之EEPROM中的X 射線產生裝置I之製造序號進行對照’同時上述讀出之X 射線產生裝置]之固有的編碼與記憶於控制部 5 0之 EEPROM中的X射線產生裝置1之固有的編碼進行對照( S 2 )。而,X射線產生裝置1之ID (識別資訊)方面,將 製造序號與固有編碼分別對照,係因爲有製造序號即使相 同而固有編碼卻變化之情形。 對照之結果’判斷製造序號與固有編碼是否均爲一致 (對照成立)(S3),製造序號與固有編碼均爲一致之情 形下,可准許從控制部5 0之CPU 5 1將X射線照射信號輸 出(S4 )。However, the CPU 4] of the head circuit 40 only performs the X-ray measurement by X • 13- 200529272 (10) X-ray tube 8 only when the X-ray irradiation signal from c PU 5] that controls 咅 β 50 is received. X-ray irradiation. Therefore, the X-ray irradiation by the X-ray tube 8 is controlled by the X-ray irradiation signal of the CPU 51 of the control unit 50. Therefore, the CPU 5 of the control unit 50] executes the identification information comparison processing of FIG. 8 only once when the power of the control unit 50 is turned on, to prevent X-rays of the inappropriate X-ray tube 8 from being irradiated without permission. . Hereinafter, the identification information matching processing of FIG. 8 will be described. When the power of the control unit 50 is turned on, the CPU 5I starts the identification information matching process shown in FIG. 8. First, the manufacturing serial number and unique code of the X-ray generating device 1 stored in the EEPROM in the head circuit 40 are read (S 1 in Fig. 8). Then, the manufacturing serial number of the X-ray generation device 1 read out is compared with the manufacturing serial number of the X-ray generation device I stored in the EEPROM of the control section 50, and the inherent encoding of the above-mentioned read X-ray generation device] The unique code of the X-ray generation device 1 stored in the EEPROM of the control unit 50 is compared (S 2). On the other hand, in the ID (identification information) of the X-ray generating device 1, the manufacturing serial number is compared with the unique code, because the unique serial number may be changed even if the manufacturing serial numbers are the same. Result of the comparison 'Judge whether the manufacturing serial number and the inherent code are the same (the comparison is established) (S3). When the manufacturing serial number and the inherent code are the same, the CPU 51 of the control unit 50 may be permitted to irradiate the X-ray signal Output (S4).

另一方面,在步驟S 3若有製造序號與固有編碼之任 何一方不一致之情形,則禁止從控制部5 〇之CPU 5 1將X 射線照射信號輸出(S 5 ),並以監視燈5 2之閃爍(S 6 ) -14- 200529272 (11) 而將不准許該不恰當的X射線產生裝置〗之使用通知使用 者。 如以上實行第8圖之處理之時,僅對被准許之恰當的 X射線產生裝置1,而從控制部5 0之CPU5 1將X射線照 射信號輸出之故,可防範未經許可之不恰當的X射線管8 之X射線照射於未然。 〔產業上之利用可行性〕 本發明之X射線產生裝置,係如以上之構成,因而可 得到下列的效果。即,係將具有導電性及熱傳導性之輸出 窗保持部固定在燈管的前端之X射線管,及驅動該X射 線管之電壓產生部收容在保護殼體內之X射線產生裝置, 其具備有:形成於輸出窗保持部的凸緣部,及設置於保護 殼體中,且具有輸出窗保持部可插入的開口部的前面面板 ,及從形成前面面板的開口部之壁面突出而與輸出窗保持 部的凸緣部抵接之突起部,及具有將抵接於突起部之凸緣 部朝向突起部押壓’同時與形成於開口部之壁面上之陰螺 紋部內進行螺合之外螺紋的熱傳導性之固定螺帽,因而可 確實地將X射線管固定於保護殼體內。 【圖式簡單說明〕 第1圖係顯示本發明之X射線產生裝置的一個實施形 態之分解立體圖; 第2圖係第】圖所示之χ射線產生裝置的剖面圖; -15- (12) 200529272 第3圖係沿著第2圖之η 線之剖面圖; 第4圖係顯示X射線管之剖面圖; 第5圖係第2圖所示之x射線產生裝置的關鍵部放大 剖面圖; 第6圖係顯示X射線管組裝到前面面板上之狀態的立 體圖; 第7圖係顯示關於識別資訊對照之構成的方塊圖; • 第8圖係顯示識別資訊對照處理之流程圖。 【主要元件符號說明】 1 : X射線產生裝置 2 :保護殼體 4 :殼本體部 5 :前面面板 6 :背面面板 ^ 7 :安裝用底部 8 : X射線管 9 :燈管 1 0 :排氣管 1 1 :桿座 】2 :輸出窗保持部 ]2 a :中央開口 ]3 :輸出窗 ]4 :標靶 -16- 200529272 (13) 1 5 :桿銷 1 6 :燈絲 1 7 :聚焦件 1 8 :凸緣部 1 9 ··蓋 2 0 :電路基板 2 1 :電壓產生部 2 1 a ·配線 2 2 :底板 22a :第1安裝片 22b:第2安裝片 2 3 :連接端子 2 4 :螺帽 2 5 :止動螺絲 2 6 :開口部 鲁 2 6 a :壁面 2 7 :突起部 2 8 :螺絲 2 9 :陰螺紋部 3 0 :固定螺帽 3 0 a :外螺紋 3 0 c :定位面 3 0 b :前端 3 1 :筒身部 -17- (14) 200529272 3 2 :六角頭部 4 0 :頭部電路 41 : CPU (中中處理器) 4 2 :配線On the other hand, if there is a case where the manufacturing serial number does not agree with any of the inherent codes in step S3, the CPU 51 of the control unit 50 is prohibited from outputting the X-ray irradiation signal (S5), and the monitor lamp 5 2 (S 6) -14- 200529272 (11) and inform the user that the use of the inappropriate X-ray generating device is not allowed. When the processing shown in FIG. 8 is performed as above, only the X-ray generation device 1 that is approved as appropriate and the CPU 51 of the control section 50 outputs X-ray irradiation signals can prevent the inappropriateness without permission. The X-rays of the X-ray tube 8 were irradiated beforehand. [Industrial Feasibility] The X-ray generating device of the present invention is configured as described above, so that the following effects can be obtained. That is, it is an X-ray tube in which an output window holding portion having electrical and thermal conductivity is fixed to the front end of a lamp tube, and an X-ray generation device in which a voltage generating portion driving the X-ray tube is housed in a protective case, and is provided with: : A flange portion formed in the output window holding portion, a front panel provided in the protective housing, and having an opening portion through which the output window holding portion can be inserted, and a wall surface protruding from the wall portion of the opening portion forming the front panel to the output window A protruding portion that abuts the flange portion of the holding portion, and a portion that has a male portion that presses the flange portion abutted against the protruding portion toward the protruding portion while screwing an external thread into a female thread portion formed on a wall surface of the opening portion The heat-conducting fixing nut secures the X-ray tube in the protective case. [Brief description of the drawings] Figure 1 is an exploded perspective view showing an embodiment of the X-ray generating device of the present invention; Figure 2 is a sectional view of the X-ray generating device shown in Figure 1; -15- (12) 200529272 Figure 3 is a sectional view taken along line η of Figure 2; Figure 4 is a sectional view showing an X-ray tube; Figure 5 is an enlarged sectional view of a key part of the x-ray generating device shown in Figure 2; Figure 6 is a perspective view showing the state where the X-ray tube is assembled on the front panel; Figure 7 is a block diagram showing the structure of the identification information comparison; • Figure 8 is a flowchart showing the identification information comparison processing. [Description of main component symbols] 1: X-ray generator 2: Protective case 4: Case body 5: Front panel 6: Rear panel ^ 7: Mounting bottom 8: X-ray tube 9: Lamp tube 1 0: Exhaust Tube 1 1: Rod seat] 2: Output window holder] 2 a: Central opening] 3: Output window] 4: Target -16- 200529272 (13) 1 5: Rod pin 1 6: Filament 1 7: Focusing element 1 8: flange 1 9 ··· cover 2 0: circuit board 2 1: voltage generating unit 2 1 a · wiring 2 2: bottom plate 22a: first mounting piece 22b: second mounting piece 2 3: connection terminal 2 4 : Nut 2 5: Set screw 2 6: Opening part 2 6 a: Wall surface 2 7: Projection 2 8: Screw 2 9: Female thread part 3 0: Fixing nut 3 0 a: External thread 3 0 c : Positioning surface 3 0 b: Front end 3 1: Body part -17- (14) 200529272 3 2: Hex head 4 0: Head circuit 41: CPU (medium and middle processor) 4 2: Wiring

5 0 :控制部 5 1 : CPU 5 2 :監視燈 參 6 0 ··存取器5 0: Control unit 5 1: CPU 5 2: Monitor light See 6 0 ·· Accessor

61 : CPU 6 2 :顯示部 63 :輸入部61: CPU 6 2: Display section 63: Input section

-18--18-

Claims (1)

200529272 (1) 十、申請專利範圍 1 · 一種X射線產生裝置,係具備: 具有X射線的輸出窗之X射線管; 驅動前述X射線管之電壓產生部;及 收容前述X射線管與前述電壓產生部之保護殼體的X 射線產生裝置,其特徵爲: 具備:設置於前述保護殼體,且具有面臨前述輸出窗 的開口部之前面面板;及 固定有驅動前述X射線管的電壓產生部之底板, 以前述面板的前述開口部相對於前述輸出窗之方式, 固定前述X射線管,且於前述面板固定著前述底板。 2 ·如申請專利範圍第1項之X射線產生裝置,其中 於前述X射線管的前端,固定著具有導電性及熱傳導性之 輸出窗保持部。 3.如申請專利範圍第2項之X射線產生裝置,其中 進一步具備:形成於前述輸出窗保持部之突緣部。 4 ·如申請專利範圍第3項之X射線產生裝置’其中 前述X射線管係以前述突緣部固定於前述面板。 5 ·如申請專利範圍第1至4項中任一項之X射線產 生裝置,其中進一步具備電路基板,前述電壓產生部搭載 於前述電路基板上,而前述電路基板固定於前述底板。 6. 一種X射線產生裝置,係具備: 具有X射線的輸出窗之X射線管; 驅動前述X射線管之電壓產生部;及 -19- 200529272 (2) 收容前述χ射線管與前述電壓產生部之保護殼體的x 射線產生裝置,其特徵爲: 由殼本體部;前面面板;及背面面板所構成之3分割 型之箱狀來構成的, 該殼本體部係呈四角柱形狀, 該前面面板係呈平板狀,且具有使由前述χ射線管所 射出的χ射線通過的開口部, Φ 而背面面板係呈平板狀,且固定著連接端子,該連接 端子連接有用來驅動前述X射線管之電路部。 7.如申請專利範圍第6項之X射線產生裝置,其中 於前述X射線管的前端,固定著具有導電性及熱傳導性之 輸出窗保持部。 8 ·如申請專利範圔第7項之X射線產生裝置,其中 進一步具備:形成於前述輸出窗保持部之突緣部。 -20 -200529272 (1) X. Patent application scope 1 · An X-ray generating device is provided with: an X-ray tube having an X-ray output window; a voltage generating section for driving the X-ray tube; and containing the X-ray tube and the voltage The X-ray generating device with a protective casing of the generating unit is characterized by comprising: a front panel provided in the protective casing and having an opening portion facing the output window; and a voltage generating unit that drives the X-ray tube. The bottom plate fixes the X-ray tube so that the opening portion of the panel faces the output window, and fixes the bottom plate to the panel. 2. The X-ray generating device according to item 1 of the scope of patent application, wherein an output window holding portion having electrical and thermal conductivity is fixed to the front end of the X-ray tube. 3. The X-ray generating device according to item 2 of the patent application scope, further comprising: a flange portion formed in the output window holding portion. 4. The X-ray generating device according to item 3 of the scope of patent application, wherein the X-ray tube is fixed to the panel with the flange portion. 5. The X-ray generating device according to any one of claims 1 to 4, further comprising a circuit board, the voltage generating section is mounted on the circuit board, and the circuit board is fixed to the bottom plate. 6. An X-ray generating device, comprising: an X-ray tube having an X-ray output window; a voltage generating section driving the X-ray tube; and -19-200529272 (2) housing the X-ray tube and the voltage generating section An X-ray generating device for a protective casing is characterized by a three-part box-like structure composed of a casing body portion, a front panel, and a rear panel. The casing body portion is in the shape of a quadrangular pillar, and the front The panel is flat and has an opening through which x-rays emitted from the x-ray tube pass, Φ, while the back panel is flat and has a connection terminal fixed to the connection terminal for driving the X-ray tube. Of the circuit department. 7. The X-ray generating device according to item 6 of the patent application, wherein an output window holding portion having electrical and thermal conductivity is fixed to the front end of the X-ray tube. 8. The X-ray generating device according to item 7 of the patent application, further comprising: a flange portion formed on the output window holding portion. -20-
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