200414256 0) 玖、發明說明 【發明所屬之技術領域】 本發明是有關介質障層放電型低壓放電燈管。 【先前技術】 在管狀玻璃燈管容器之外表面具有電極之所謂介 電型低壓放電燈管有例如實開昭6 1 - 1 2 6 5 5 9號公報 載者。 圖5表示以上述公報所記載之技術做爲參考而由 發明者們試作之介質障層放電型低壓放電燈管之構造 圖5中，5爲低壓放電燈管，1 0爲管狀玻璃燈管容器 該管狀玻璃燈管容器1 〇之內部封入水銀與稀有氣體 合氣所構成之充塡劑60做爲放電介質。在管狀玻璃 容器1 〇之兩端部外表面配設有以電流導體層3 1、3 6 成之外部電極21、26。該外部電極21、26之電流導 3 1、3 6是藉將端部浸入超音波焊接槽中而形成者。 圖5所示之低壓放電燈管5中之13與1 6爲管狀 燈管容器1 〇之兩端部之密封部。在製造工程中，一 無焊珠密封部1 6在真空排氣玻璃燈管容器1 〇之前須 封，另一方的先前式密封部1 3將管狀玻璃燈管容器 氣成真空，並於引入充塡劑60之後熱密封。在該先 密封部1 3之密封工程中，因爲玻璃燈管容器1 〇內之 低於大氣壓力，密封時因高溫而成爲柔軟狀態之玻璃 被外部氣壓所擠壓而成爲陷入玻璃燈管容器1 0之放 質放 所記 本案 。在 ，在 之混 燈管 所構 體層 玻璃 方之 熱密 10排 前形 氣壓 材料 電空 -5- (2) (2)200414256 間內。因此，密封部1 3之玻璃之厚度變薄’該部分之玻 璃有容易破損的問題。 爲解決該問題’本案發明人等嘗試製作了圖6所示之 構造之介質障層放電型低壓放電燈管6 °該介質障層放電 型低壓放電燈管6在製造工程中’一方的燈管端之無小珠 密封部16是在玻璃容器1〇被真空排氣之前熱密封，而另 -方的燈管端之圓柱小珠密封部1 4將較容易取得之玻璃 細棒剪斷而得之圓柱焊珠44***管狀玻璃燈管容器1 〇之 圓柱小珠密封部1 4之位置’在此情形下將玻璃燈管容器 1 〇內部排氣成真空，並引入充塡劑60之後，熱密封管狀 玻璃燈管容器1 〇之端部俾覆蓋圓柱小珠44而製得。 該項製造之介質障層放電型低壓放電燈管6由於中間 設有圓柱小珠44，該圓柱小珠密封部1 4之玻璃不至於被 凹陷於放電空間中而可以製成如圖6所示之構造。 〔專利文獻〕 日本國新型公開公報，實開昭61 - 126559號公報 【發明內容】 可是本發明人等發現具有上述構造之介質障層放電型 低壓放電燈管6有下列之問題。亦即，圓柱小珠密封部 1 4之圓柱小珠4 4之端部凸出至管狀玻璃燈管容器1 〇之 放電空器內，而在玻璃燈管容器1 〇與該凸出部分之間產 生間隙。若有該間隙，尤其在周圍溫度在例如0 °C那種低 溫時，充塡劑6 0中之水銀蒸汽不容易進入該間隙部分， -6- (3) (3)200414256 S卩發生所謂的水銀枯渴現象。結果，在該間隙部分內部局 牲只含稀有氣體，而產生僅有氖、氬所形成之稀有氣體 之放電。若發生該稀有氣體放電時，放電溫度即上升，且 與該放電部相連接之玻璃燈管容器1 0之溫度一部分會上 升。結果，發現該部分之玻璃熔化以致有時發生充塡劑 6 〇之漏洩情形，欠缺長時間亮燈之可靠性之問題。 本發明爲監及上述技術上問題而完成者，其目的在提 供一種可以防止在管狀玻璃燈管容器兩端之密封部之水銀 枯渴現象且可以保證長期間亮燈之可靠性之介質障層放電 型低放電燈管。 段 手 之 題 SK- 課 決 解 本發明之介質障層放電型低壓放電燈管具備：在兩端 部之外周配設外部電極，內部封入放電介質，且兩端部被 熱密封之管狀玻璃燈管容器，以及在該管狀玻璃燈管容器 中之上述被熱密封之兩端部之至少一端封入俾在與上述管 狀玻璃燈管容器裡面之間形成特定之空隙之玻璃小珠；上 述特定之空隙被形成可由上述管狀玻璃燈管容器之一端擴 大至放電空間。 另外，本發明之介質障層放電型低壓放電燈管中’上 述玻璃焊珠爲球形焊珠。 此外，本發明之介質障層放電型低壓放電燈管中’上 述球形焊珠是被封入上述管狀玻璃燈管容器之一端部’另 一端部未封入上述球形小珠而被熱密封。 -7- (4) (4)200414256 又，本發明之介質障層放電型低壓放電燈管中，上述 外部電極被形成可以覆蓋上述管兩端立端面與外周面。 又，本發明之介質障層放電型低壓放電燈管中，上述 玻璃小珠爲其頭部配置成朝向放電空間側之砲彈型小珠。 又，本發明之介質障層放電型低壓放電燈管中，上述 砲彈型小珠是被封入上述管玻璃燈管容器之一端部，而另 一端部並未封入上述球形小珠而被熱密封。 又，本發明之介質障層放電型低壓放電燈管中，上述 外部電極被形成爲覆蓋上述管兩端之端與外周面。 本發明之介質障層放電型低壓放電燈管之製造方法具 備：將管狀玻璃燈管容器之一端藉由玻璃小珠，或不藉由 玻璃小珠熱密封之工程，在藉由該工程將一端被密封之上 述管狀玻璃燈管容器之開放端部***玻璃小珠俾在與該管 狀玻璃燈管容器裡面之間形成特定之空隙之工程；在藉由 該工程***上述玻璃小珠之狀態下，排除上述管狀玻璃燈 管容器內部之氣體之工程；由上述管狀玻璃燈管容器之開 放端部對由上述工程所排氣之管狀玻璃燈管容器內部塡充 放電介質之工程；以及將藉由該工程塡充上述放電介質之 管狀玻璃燈管容器之開放端部熱密封以覆蓋上述玻璃小珠 之工程；上述特定空隙被形成可由上述管狀玻璃燈管容器 之一端朝向放電空間擴大。 另外，本發明之介質障層放電型低壓放電燈管之製造 方法中，上述玻璃小珠爲球形小珠。 此外，本發明之介質障層放電型低壓放電燈管之製造 冬 200414256200414256 0) Description of the invention [Technical field to which the invention belongs] The present invention relates to a dielectric barrier discharge type low-pressure discharge lamp. [Prior Art] A so-called dielectric low-pressure discharge lamp having an electrode on the outer surface of a tubular glass tube container is disclosed in, for example, Japanese Unexamined Patent Publication No. 6 1-1 2 6 5 5 9. FIG. 5 shows the structure of a dielectric barrier discharge type low-pressure discharge lamp made by the inventors on the basis of the technology described in the above publication. In FIG. 5, 5 is a low-pressure discharge lamp, and 10 is a tubular glass lamp vessel. The inside of the tube-shaped glass tube container 10 is filled with a filling agent 60 composed of mercury and a rare gas as a discharge medium. External electrodes 21 and 26 made of current conductor layers 3 1 and 36 are arranged on the outer surfaces of both ends of the tubular glass container 10. The current conductors 3 1 and 36 of the external electrodes 21 and 26 are formed by immersing the ends in an ultrasonic welding bath. 13 and 16 of the low-pressure discharge lamp tube 5 shown in FIG. 5 are sealing portions at both ends of the tubular lamp vessel 10. In the manufacturing process, a bead-free sealing part 16 must be sealed before the vacuum exhaust glass lamp vessel 10, and the other conventional sealing part 13 evacuates the tubular glass lamp vessel into a vacuum, and introduces a charging Liniment 60 is then heat-sealed. In the sealing process of the first sealing part 13, because the glass lamp vessel 10 is lower than the atmospheric pressure, the glass that becomes soft due to high temperature during sealing is squeezed by the external air pressure and becomes trapped in the glass lamp vessel 1 0 of the quality put in the case. In the mixed layer of glass, the structure of the glass side of the heat-tight 10 rows of the front shape of the air pressure material electro-space -5- (2) (2) 200414256. Therefore, the thickness of the glass in the sealing portion 13 is reduced, and the glass in this portion is liable to be broken. In order to solve this problem, the inventors of the present case tried to produce a dielectric barrier discharge type low-pressure discharge lamp 6 having a structure shown in FIG. 6. The dielectric barrier discharge type low-pressure discharge lamp 6 was manufactured during the manufacturing process. The bead-free sealing portion 16 at the end is heat-sealed before the glass container 10 is evacuated by vacuum, and the cylindrical bead sealing portion 14 at the other side of the lamp tube is obtained by cutting the glass rod that is easier to obtain. The position where the cylindrical welding bead 44 is inserted into the cylindrical bead sealing part 14 of the tubular glass tube container 10 'In this case, the inside of the glass tube container 10 is evacuated to a vacuum, and after the filler 60 is introduced, the heat An end portion of the sealed tubular glass lamp vessel container 10 was made by covering the cylindrical beads 44. The manufactured dielectric barrier discharge type low-pressure discharge lamp 6 is provided with a cylindrical bead 44 in the middle, and the glass of the cylindrical bead sealing portion 14 can not be recessed in the discharge space, and can be made as shown in FIG. 6. Of the structure. [Patent Document] Japanese New Publication, Sho 61-126559 [Summary of the Invention] However, the present inventors have found that the dielectric barrier discharge type low-pressure discharge lamp 6 having the above-mentioned structure has the following problems. That is, an end portion of the cylindrical bead sealing portion 14 of the cylindrical bead 44 is protruded into the discharge vessel of the tubular glass tube container 10, and between the glass tube container 10 and the protruding portion Create a gap. If there is such a gap, especially when the ambient temperature is at a low temperature such as 0 ° C, the mercury vapor in the filler 60 does not easily enter the gap portion, so-called (6-) (3) (3) 200414256 S 卩 occurs. Mercury thirst. As a result, the local animal in the gap portion contains only a rare gas, and a discharge of only a rare gas formed by neon and argon is generated. When the rare gas discharge occurs, the discharge temperature rises, and a part of the temperature of the glass lamp vessel 10 connected to the discharge portion rises. As a result, it was found that the glass in this part was melted so that the leakage of the filler 600 sometimes occurred, which lacked the problem of the reliability of long-term lighting. The present invention has been completed in view of the above technical problems, and its object is to provide a dielectric barrier layer that can prevent the phenomenon of mercury thirst at the sealing portions at both ends of a tubular glass tube container and can ensure the reliability of long-term lighting. Discharge type low discharge lamp. SK-Class Solution to the Dielectric Barrier Discharge Type Low-pressure Discharge Lamp of the Present Invention: A tubular glass lamp provided with an external electrode at the periphery of both ends, a discharge medium enclosed therein, and both ends heat-sealed. A tube container, and at least one of the two ends of the heat-sealed ends in the tubular glass lamp tube container, glass beads forming a specific gap between the tubular glass lamp tube container and the inside of the tubular glass lamp container; It is formed to expand from one end of the tubular glass tube container to the discharge space. In the dielectric barrier discharge type low-pressure discharge lamp according to the present invention, the glass beads are spherical beads. In addition, in the dielectric barrier discharge type low-pressure discharge lamp of the present invention, the spherical beads described above are sealed in one end portion of the tubular glass tube container and the other end portions are not sealed in the spherical beads and are heat-sealed. -7- (4) (4) 200414256 In the dielectric barrier discharge type low-pressure discharge lamp of the present invention, the external electrodes are formed so as to cover the vertical end surfaces and the outer peripheral surfaces of both ends of the tube. Further, in the dielectric barrier discharge type low-pressure discharge lamp of the present invention, the glass beads are shell-shaped beads whose heads are arranged to face the discharge space side. Further, in the dielectric barrier discharge type low-pressure discharge lamp of the present invention, the cannonball-type beads are sealed in one end portion of the tube glass lamp tube container, and the other end portion is heat-sealed without sealing the spherical beads. In the dielectric barrier discharge type low-pressure discharge lamp of the present invention, the external electrode is formed so as to cover the ends of the both ends of the tube and the outer peripheral surface. The manufacturing method of the dielectric barrier discharge type low-pressure discharge lamp of the present invention includes: a process of heat-sealing one end of a tubular glass tube container with glass beads or not using glass beads, and The process of inserting glass beads at the open end of the sealed tubular glass tube container, to form a specific gap between the tubular glass tube container and the inside of the tubular glass tube container; A project for excluding gas inside the above-mentioned tubular glass tube container; a project for charging and discharging a medium inside the tubular glass tube container exhausted by the above-mentioned project from the open end of the above-mentioned tube glass tube container; and Engineering: The project of heat-sealing the open end of a tubular glass tube container filled with the above-mentioned discharge medium to cover the glass beads; the specific gap is formed so that one end of the tubular glass tube container can be enlarged toward the discharge space. In the manufacturing method of the dielectric barrier discharge type low-pressure discharge lamp of the present invention, the glass beads are spherical beads. In addition, the manufacture of the dielectric barrier discharge type low-pressure discharge lamp of the present invention
方法中，上述玻璃小珠爲其頭部被配置成朝向放電空間側 之砲彈型小珠。In the method, the glass bead is a cannonball-type bead whose head is arranged to face the discharge space side.
藉由此種構造與製造方法所製造之本發明之介質障層 放電型低壓放電燈管中，形成於管狀玻璃燈管容器裡面與 玻璃小珠之間的空隙是被形成可以由上述管狀玻璃燈管容 器之一端朝向放電空間擴大，因此，塡充於管狀玻璃燈管 容器內之放電媒體會含著水銀侵入上述空隙中。因此，在 該空隙中不致發生水銀枯渴現象，從而可以p方止起因於溫 度上升之來自管.狀玻璃燈管容器之放電介質之漏泄以保證 長期間點燈之可靠性。 【實施方式】 發明之實施形態In the dielectric barrier discharge type low-pressure discharge lamp of the present invention manufactured by such a structure and manufacturing method, a gap formed between a tubular glass tube container and a glass bead is formed by the above-mentioned tubular glass lamp. One end of the tube container is enlarged toward the discharge space. Therefore, the discharge medium filled in the tube-shaped glass tube container may contain mercury into the above-mentioned space. Therefore, mercury thirst does not occur in this gap, so that the leakage of the discharge medium from the tube-shaped glass lamp tube container due to the temperature rise can be prevented to ensure the reliability of long-term lighting. [Embodiment] Embodiment of the invention
以下要根據圖式詳細說明本發明之實施形態。圖1表 示本發明之第1實施形態之介質障層放電型低壓放電燈 管之構造。在圖1中，與圖5、圖6所示之試作低壓放電 燈管5、6共同之符號表示相同之構件。 在圖1所示之介質障層放電型低壓放電燈管1中，4 1 胃球形小珠，是將玻璃細棒切出之圓柱焊珠再模製而成者 °但是，該球形小珠4 1之製造方法也可以利用其他製造 方法按照管狀玻璃燈管容器1 0之尺寸製成恰當之直徑的 坡璃球來使用。 本實施形態之介質障層放電型低壓放電燈管1之製造 1程中，在真空排氣玻璃燈管容器1 0之前熱密封一方之 冬 (6) 200414256 燈管端之無小珠密封部1 6，而針對另一方之燈管端之 形小珠密封部1 1，是將球形小珠4 1***至管狀玻璃燈 容器1 〇之球形小珠密封部1 1之位置，並在此狀態下， 玻璃燈管谷益1 〇之內部排除成真空，而引入充塡劑6 0 後，熱密封管狀玻璃燈管容器1 0之端部以覆蓋球形小 4 1 〇 本實施形態是以球形小珠4 1取代圖6所示之試作 壓放電燈管6所使用之圓柱小球4 4，因此球形小珠4 1 管狀玻璃燈管1 〇之空隙之寬度會朝向放電空間擴大， 以可對該空隙內供應含有水銀蒸汽之稀有氣體。因此， 實施形態之介質障層放電型低壓放電燈管1可以防止以 柱小球44密封時所發生那樣亮燈時由於圓柱小珠44與 狀玻璃燈管1 〇之空隙之水銀枯渴所引起之局部之稀有 體放電之發生。而且可以防止因爲該稀有氣體放電所導 之溫度上升而熔化玻璃以至於漏泄之不良情形之發生。 其次，要利用圖2說明本發明之第2實施形態之 質障層放電型低壓放電燈管2。第2實施形態之特徵 在管狀玻璃燈管容器1 〇之兩端部***球形小珠4 1、46 以熱密封而形成球形小珠密封部1 1、1 7之構造。此外 在圖2中，對於與圖1所示之第1實施形態共同之構 附加相同之符號。 本實施形態之介質障層放電型低壓放電燈管2之製 中，在玻璃燈管容器1 0被真空排氣之前即將球形小珠 塞入玻璃管中並熱密封一邊之燈管端之球形小球密封 球 管 將 之 珠 低 與 所 本 圓 管 氣 到 介 是 件 造 46 部 -10- (7) (7)200414256 1 7，而對另一邊之燈管端之球形小珠密封部 Π，則將球 形小珠4 1***管狀玻璃燈管容器1 〇之球形小珠密封部 1 1之位置爲止，在此狀態下真空排氣玻璃燈管容器1 〇之 內部，並引入充塡劑60之後，熱密封管狀玻璃燈管容器 1 〇之端部俾覆蓋球形小珠4 1。 本第 2 實施形態之介質障層放電型低壓放電燈管2 與第1 實施形態一樣，也可以防止如同以圓柱小珠44密 封時所發生之燈管點亮時在球形小珠4 1與管狀玻璃燈管 1 0之空隙中由於水銀枯渴所導致之局部性稀有氣體放電 之發生，並可以藉由該稀有氣體放電所引起之溫度上升熔 化玻璃以防止到達漏泄之不良情形之發生。 其次，要利用圖3說明本發明之第3實施形態之介 質障層放電型低壓放電燈管。在圖3中，與圖1、圖2所 示之第 1、第2實施形態之介質障層放電型低壓放電燈 管1、2共同之符號表示相同之構件。 在圖3所示之介質障層放電型低壓放電燈管3中， 4 1 A爲砲彈型小珠，是將由玻璃細棒切出之圓柱小珠進一 步模製而成者。但是，該砲彈型小珠4 i A之製造方法並 不侷限於此，可以依照管狀玻璃燈管容器1 〇之尺寸選擇 恰當直徑使用。 本實施形態之介質障層放電型低壓放電燈管3之製造 工程中，在真空排氣玻璃燈管容器1 〇之前熱密封一邊的 燈管端之無小珠密封部1 6，對於另一邊之燈管端之砲彈 型小珠密封部1 1 A，則將砲彈型小珠4〗a之頭部設成朝向 -11 - (8) (8)200414256 放電空間側之姿勢***到管狀玻璃燈管容器1 〇之砲彈型 小珠密封部1 1 A之位置，在該狀態下，真空排氣玻璃燈 管容器10之內部並引入充塡劑60之後，熱密封管狀玻璃 燈管容器1 〇之端部。 本實施形態中藉將砲彈型小珠4 1 A之頭部朝向放電 空間側之姿勢以取代圖6所示之試作低壓放電燈管6中所 使用之圓柱小珠44使用，因此砲彈型小珠4 1 A之管狀玻 璃燈管容器1 〇之空隙會朝向放電空間擴大其寬度，所以 可以對該空隙中供應含有水銀蒸汽之稀有氣體。因此，本 實施形態之介質障層放電型低壓放電燈管3可以防止以圓 柱小珠44密封時所發生由燈管點亮時在砲彈型小珠4 1 A 與管狀玻璃燈管1 0之空隙間因水銀枯渴所發生之局部性 之稀有氣體之放電，並可藉由該稀有氣體之放電而升高之 溫度熔解玻璃，以防止導致漏泄之不良情況之發生。 此外，在第1實施形態一般之球形小珠4 1之情形下 ，要整形成小徑之完整球形在技術上並不容易，在製造成 本面上以簡單之工程容易成爲球形之橢圓形。若球形小珠 4 1成爲橢圓形，則在***玻璃管中並引導管狀玻璃容器 10之端部之工程，有時會卡在中途而不易引導至特定之 址。可是，若像本實施形態以砲彈型小珠4 1 A取代球 汗多小珠4 1時，藉由硏磨由圓柱玻璃取出之短圓柱之一端 民卩可將整形成砲彈形之砲彈型小珠4 1 A之頭部以朝向放 貿I空間側之姿勢***管狀玻璃燈管容器1 0之端部並順利 :¾¾引入特定之位置。因此，利用本實施形態之介質障層放 -12- 200414256 Ο) 電型低壓放電燈管3即可謀求產品良品之提升。 其次’要利用圖4說明本發明之第4實施形態之介 質障層放電型低壓放電燈管4。第4實施形態之特徵爲 在管狀玻璃燈管容器1 〇之兩端部***砲彈型小珠4 1 A、 46A ’並藉由熱密封形成砲彈型小珠密封部〗丨a、17A。 另外’在圖4中，對於與圖3所示之第3實施形態共同 之構件附加相同之符號。 本實施形態之介質障層放電型低壓放電燈管4之製造 法是在真空排氣玻璃燈管容器10之前，一邊之燈管端之 砲彈型小珠密封部17A將砲彈型小珠46A之頭部以朝向 放電空間側之姿勢塞入玻璃管內並熱密封，而對另一邊之 燈管之砲彈型小珠密封部1 1 A，則將砲彈型小珠4 1 A以其 頭部朝向放電空間側之姿勢***到管狀玻璃燈管容器1 0 之砲彈型小珠密封部1 1 A之位置，並在此狀態下真空排 氣玻璃燈管容器1 〇內部，並於引入充塡劑60之後，熱密 封管狀玻璃燈管容器1 0之端部以覆蓋砲彈型小珠4 1 A。 本第4實施形態之介質障層放電型低壓放電燈管4 也與第3實施形態一樣，可以防止以先前圓柱小珠44密 封時所發生之燈管點亮時在砲彈型小珠4 1 A與管狀玻璃 燈管1 0之空隙之水銀枯渴所導致之局部性稀有氣體放電 之發生，並可以防止由於該稀有氣體之放電所引起之溫度 上升而熔化玻璃以致發生漏泄之不良情形。 除此之外，與第3實施形態相同，也可以謀求產品 良率之提升。 -13- (10) 200414256 〔實施例〕 茲說明製作圖1所示之構造之實施例1，圖3所示之 構造之實施例2以及圖6所示之構造之試作機進行點亮試 驗之結果。 〔實施例1〕 <管狀玻璃燈管容器>Hereinafter, embodiments of the present invention will be described in detail based on the drawings. Fig. 1 shows a structure of a dielectric barrier discharge type low-pressure discharge lamp according to a first embodiment of the present invention. In Fig. 1, the same symbols as those of the trial low-pressure discharge lamps 5 and 6 shown in Figs. 5 and 6 indicate the same components. In the dielectric barrier discharge type low-pressure discharge lamp 1 shown in FIG. 1, 4 1 gastric spherical beads are formed by molding cylindrical welding beads cut out of a thin glass rod. However, the spherical beads 4 The manufacturing method of 1 can also use other manufacturing methods to make a slope glass ball of an appropriate diameter according to the size of the tubular glass tube container 10. In the first manufacturing process of the dielectric barrier discharge type low-pressure discharge lamp 1 of this embodiment, one side is heat-sealed before the vacuum exhaust glass lamp vessel 10 (6) 200414256 The bead-free sealing portion 1 at the lamp end 6, and for the other side of the lamp tube end of the bead sealing portion 11 is to insert a spherical bead 41 to the position of the spherical bead sealing portion 1 1 of the tubular glass lamp container 10, and in this state The inside of the glass lamp tube Gu Yi 10 was removed into a vacuum. After introducing the filler 60, the end of the tubular glass lamp tube container 10 was heat-sealed to cover the spherical small 4 1 0. In this embodiment, spherical beads are used. 4 1 replaces the cylindrical ball 4 4 used in the test pressure discharge lamp 6 shown in FIG. 6, so the width of the gap of the spherical bead 4 1 of the tubular glass lamp tube 10 is enlarged toward the discharge space, so that the gap can be It supplies rare gas containing mercury vapor. Therefore, the dielectric barrier discharge type low-pressure discharge lamp 1 according to the embodiment can prevent the mercury from thirsty due to the mercury in the gap between the cylindrical beads 44 and the glass-shaped lamp 10 when the lamp is sealed with the pillar ball 44. The occurrence of local rare body discharges. Furthermore, it is possible to prevent the occurrence of a problem that the glass melts and leaks due to the temperature rise caused by the discharge of the rare gas. Next, a low-pressure discharge lamp 2 of a barrier layer discharge type according to a second embodiment of the present invention will be described with reference to FIG. Characteristics of the second embodiment The structure in which spherical beads 4 1 and 46 are inserted into both ends of the tubular glass tube container 10 and heat-sealed to form the spherical bead sealing portions 11 and 17. In Fig. 2, the same reference numerals are given to the structures common to the first embodiment shown in Fig. 1. In the manufacturing of the dielectric barrier discharge type low-pressure discharge lamp tube 2 of this embodiment, before the glass tube container 10 is evacuated by vacuum, the spherical beads are inserted into the glass tube and the spherical end of the lamp tube on one side is heat-sealed. The ball-sealed tube lowers the bead with the original round tube to make 46 pieces -10- (7) (7) 200414256 1 7 and the ball-shaped bead seal on the other end of the lamp tube Π, Then insert the spherical bead 41 into the position of the spherical bead sealing part 11 of the tubular glass tube container 10, and in this state, evacuate the inside of the glass tube container 10 and introduce the filler 60. The end of the heat-sealed tubular glass lamp vessel 10 is covered with spherical beads 41. As in the first embodiment, the dielectric barrier discharge type low-pressure discharge lamp 2 according to the second embodiment can also prevent the spherical beads 41 and the tube from being turned on when the lamp is turned on as in the case of sealing with the cylindrical beads 44. The occurrence of local rare gas discharge due to mercury thirst in the gap of the glass lamp tube 10, and the glass can be melted by the temperature rise caused by the rare gas discharge to prevent the occurrence of the leakage. Next, a dielectric barrier discharge type low-pressure discharge lamp according to a third embodiment of the present invention will be described with reference to FIG. In Fig. 3, the same symbols as those of the dielectric barrier discharge type low-pressure discharge lamps 1 and 2 of the first and second embodiments shown in Figs. 1 and 2 indicate the same members. In the dielectric barrier discharge type low-pressure discharge lamp 3 shown in FIG. 3, 4 1 A is a cannonball-type bead, which is obtained by further molding a cylindrical bead cut out of a thin glass rod. However, the manufacturing method of the shell-shaped beads 4 i A is not limited to this, and an appropriate diameter can be selected and used according to the size of the tubular glass tube container 10. In the manufacturing process of the dielectric barrier discharge type low-pressure discharge lamp 3 of this embodiment, the bead-free sealing portion 16 on one side of the lamp tube is heat-sealed before the vacuum exhaust glass lamp vessel 10, and the other side is The cannonball-shaped bead sealing part 1 1 A at the end of the lamp tube, the head of the cannonball-shaped bead 4 〖a is set to -11-(8) (8) 200414256 and the posture of the discharge space side is inserted into the tubular glass tube The position of the shell-shaped bead sealing part 1 1 A of the container 1 〇, in this state, after the inside of the glass lamp vessel 10 is evacuated and the filler 60 is introduced, the end of the tubular glass lamp vessel 10 is heat-sealed unit. In this embodiment, the position of the head of the cannonball-type bead 4 1 A toward the discharge space side is used instead of the cylindrical bead 44 used in the trial low-pressure discharge lamp 6 shown in FIG. 6. Therefore, the cannonball-type bead is used. The space of the tube tube of the 1 A tube glass tube 10 will increase its width toward the discharge space, so a rare gas containing mercury vapor can be supplied to the space. Therefore, the dielectric barrier discharge type low-pressure discharge lamp 3 of this embodiment can prevent the gap between the cannonball-type beads 4 1 A and the tube-shaped glass tube 10 from occurring when the lamp is lit by the cylindrical beads 44. The local discharge of rare gas due to mercury thirst in the gap, and the glass can be melted by the elevated temperature of the rare gas discharge to prevent the occurrence of adverse conditions that cause leakage. In addition, in the case of the spherical beads 41 of the first embodiment, it is not technically easy to form a complete spherical shape with a small diameter, and it is easy to form a spherical ellipse by simple engineering on the manufacturing surface. If the spherical beads 41 are oval-shaped, the process of inserting them into the glass tube and guiding the end of the tubular glass container 10 may be stuck in the middle and difficult to guide to a specific location. However, if a ball-shaped bead 4 1 A is used instead of the ball-sweat bead 41 1 as in this embodiment, one of the short cylinders removed from the cylindrical glass can be honed to form a cannonball-shaped cannonball-shaped ball. The head of the bead 4 1 A is inserted into the end of the tubular glass tube container 10 in a posture facing the space side of the free trade I and smoothly: ¾¾ introduce a specific position. Therefore, by using the dielectric barrier layer of this embodiment -12- 200414256 〇) electric low-pressure discharge lamp 3 can improve the quality of the product. Next, a dielectric barrier discharge type low-pressure discharge lamp 4 according to a fourth embodiment of the present invention will be described with reference to FIG. The fourth embodiment is characterized in that cannonball-type beads 4 1 A, 46A 'are inserted into both ends of the tubular glass tube container 10, and the cannonball-type bead sealing portions 17a, 17A are formed by heat sealing. In addition, in Fig. 4, the same reference numerals are assigned to members common to the third embodiment shown in Fig. 3. The manufacturing method of the dielectric barrier discharge type low-pressure discharge lamp tube 4 of this embodiment is that the cannonball-type bead sealing part 17A on the side of the lamp tube before the vacuum exhaust glass lamp vessel 10 has the head of the cannonball-type bead 46A. The part is inserted into the glass tube in a posture toward the side of the discharge space and heat-sealed, and the cannonball-type bead sealing part 1 1 A on the other side of the lamp is discharged with its head 4 1 A toward the discharge The posture of the space side is inserted into the position of the shell-shaped bead sealing part 1 1 A of the tubular glass tube container 10, and the interior of the glass tube container 10 is vacuum-evacuated in this state, and after the filling agent 60 is introduced The end of the tubular glass tube container 10 was heat-sealed to cover the shell-shaped beads 41 A. The dielectric barrier discharge type low-pressure discharge lamp 4 of the fourth embodiment is also the same as the third embodiment, and can prevent the shell-type beads 4 1 A from being turned on when the lamp tube that was sealed by the previous cylindrical beads 44 is lit. The local rare gas discharge caused by mercury thirst in the gap between the tubular glass tube 10 and the occurrence of leakage caused by the melting of the glass due to the temperature rise caused by the discharge of the rare gas can be prevented. In addition, similar to the third embodiment, the product yield can be improved. -13- (10) 200414256 [Embodiment] The following will explain the lighting test of the test machine of Example 1 for the structure shown in FIG. 1, Example 2 of the structure shown in FIG. 3, and FIG. 6. result. [Example 1] < Tubular glass tube container >
材質：硼矽玻璃 尺寸：外徑2.6 mm、內徑2.0 mm、全長379 mm <外部電極> 電流導體層：超音波焊接層 外部電極長度：17 mm <螢光體層>Material: Borosilicate glass Size: Outer diameter 2.6 mm, Inner diameter 2.0 mm, Overall length 379 mm < External electrode > Current conductor layer: Ultrasonic welding layer External electrode length: 17 mm < Phosphor layer >
材質：三波長螢光體，厚度：20// m <充塡劑> 封入氣體：氖與Μ之混合氣（組成比：氣/M = 9〇 克分子量百分比/10克分子量百分比）。 封入壓力：8 kPa 水銀：封入量3 mg <密封用小珠 > 球形小珠 • 14 - (11) 200414256 〔實施例2〕 管狀玻璃燈管容器、外部電極、螢光體層、與充塡劑 之規格與實施例1相同，而密封用小珠是使用砲彈型小珠 〔比較例〕Material: three-wavelength phosphor, thickness: 20 // m < filler > Sealed gas: mixed gas of neon and M (composition ratio: gas / M = 90 gram molecular weight percentage / 10 gram molecular weight percentage). Sealing pressure: 8 kPa Mercury: Sealing amount 3 mg < Beads for sealing > Spherical beads • 14-(11) 200414256 [Example 2] Tube glass tube container, external electrode, phosphor layer, and filling The specifications of the agent are the same as those of Example 1, and the beads for sealing are shell-type beads [Comparative Example]
密封用小珠是使用圓柱小珠以密封玻璃燈管容器之一 端部之外之構造與實施例相同。 以燈管電流5 mA分別點亮實施例1、實施例2與比 較例之介質障層放電型低壓放電燈管之結果，皆未發生玻 璃熔化，惟.相對於比較例中在圓柱小珠與管狀玻璃燈管容 器之空隙中發生稀有氣體放電，本發明之實施形態1，實 施例2並未發生該種現象。 〔發明之效果〕The sealing bead is the same as the embodiment except that a cylindrical bead is used to seal one end of the glass tube container. With the lamp current of 5 mA lighting the dielectric barrier discharge type low-pressure discharge lamps of Example 1, Example 2 and Comparative Example, no glass melting occurred. However, compared with the cylindrical beads and A rare gas discharge occurs in the space of the tube-shaped glass tube container. In the first embodiment and the second embodiment of the present invention, this phenomenon does not occur. [Effect of Invention]
如上所述，利用本發明藉將球形小珠或砲彈型小珠等 之玻璃小珠***管狀玻璃燈管容器之燈管端部之密封部並 密封成該玻璃小珠與管狀玻璃燈管容器內面之空隙向放電 空間擴大，即可防止小珠密封部之水銀枯渴現象，以及長 期間點燈並謀求提升外放電燈管之可靠性。 另外，在本發明中，因爲使用砲彈型小珠爲密封用小 珠，因此爲密封而引入管狀玻璃燈管容器之端部的工程可 以順利進行，並可以謀求產品良率之提升。 -15- (12) (12)200414256 【圖式簡單說明】 圖1爲本發明之第1實施形態之燈管軸向之剖面圖 〇 圖2爲本發明之第2實施形態之燈管軸向之剖面圖 〇 圖3爲本發明之第3實施形態之燈管軸向之剖面圖 〇 圖4爲本發明之第4實施形態之燈管軸向之剖面圖 〇 圖5爲由本案發明人等所試製之燈管軸向之剖面圖。 圖6爲由本案發明人們所試製之另一燈管軸向之剖面 圖。 〔主要元件對照表〕 1 介 質 障 層 放 電 型 低 壓 放 電 燈 管 2 介 質 障 層 放 電 型 低 壓 放 電 燈 管 3 介 質 障 層 放 電 型 低 壓 放 電 燈 管 4 介 質 障 層 放 電 型 低 壓 放 電 燈 管 5 低 壓 放 電 燈 管 6 介 質 障 層 放 電 型 低 壓 放 電 燈 管 10 管 狀 玻 璃 燈 管 容 器 11 球 形 小珠 密 封 部 n a 砲 彈 型 小 珠 密 封 部 13 密 封 部 / 密 封 部 -16- 200414256 (13) 14 圓柱 17 球形 1 7 A 砲彈 2 1 外部 26 外部 3 1 電流 36 電流 41 ^ 46 球形 4 1 A 砲彈 44 圓柱 46 A 砲彈 60 充塡 70 螢光 小珠密封部 小珠密封部 型小珠密封部 電極 電極 導體層 導體層 小珠 型小珠 小珠 型小珠 劑 體層 -17As described above, by using the present invention, glass beads such as spherical beads or shell-shaped beads are inserted into the sealing portion of the lamp tube end of the tubular glass tube container and sealed into the glass beads and the tube glass tube container. Expanding the gap on the surface to the discharge space can prevent the mercury thirst phenomenon of the bead sealing part, and light up for a long period of time, and seek to improve the reliability of the external discharge tube. In addition, in the present invention, since the shell-type beads are used as the sealing beads, the process of introducing the end portion of the tubular glass tube container for sealing can be smoothly performed, and the product yield can be improved. -15- (12) (12) 200414256 [Brief description of the drawings] Figure 1 is a sectional view of a lamp tube in the axial direction of the first embodiment of the present invention. Figure 2 is a lamp tube axial direction of the second embodiment of the present invention. Sectional view. Figure 3 is a cross-sectional view of the lamp tube in the third embodiment of the present invention. Figure 4 is a cross-sectional view of the lamp tube in the fourth embodiment of the present invention. Figure 5 is the inventor of the present invention. A cross-sectional view of the experimentally produced lamp tube in the axial direction. Fig. 6 is a sectional view in the axial direction of another lamp tube which is trial-produced by the inventor of the present case. [Comparison table of main components] 1 Dielectric barrier discharge low pressure discharge tube 2 Dielectric barrier discharge low pressure discharge tube 3 Dielectric barrier discharge low pressure discharge tube 4 Dielectric barrier discharge low pressure discharge tube 5 Low pressure discharge lamp Tube 6 Dielectric barrier discharge type low-pressure discharge lamp tube 10 Tubular glass tube container 11 Spherical bead seal part na Cannonball-type bead seal part 13 Sealing part / sealing part-16- 200414256 (13) 14 Cylinder 17 Spherical 1 7 A Cannonball 2 1 Out 26 Out 3 1 Current 36 Current 41 ^ 46 Spherical 4 1 A Cannonball 44 Cylindrical 46 A Cannonball 60 Filling 70 Fluorescent Bead Sealing Part Bead Sealing Part Bead Sealing Part Electrode Conductor Layer Conductor Layer Small Bead Bead Bead Body Layer-17