JPH0658592U - Discharge tube - Google Patents
Discharge tubeInfo
- Publication number
- JPH0658592U JPH0658592U JP108693U JP108693U JPH0658592U JP H0658592 U JPH0658592 U JP H0658592U JP 108693 U JP108693 U JP 108693U JP 108693 U JP108693 U JP 108693U JP H0658592 U JPH0658592 U JP H0658592U
- Authority
- JP
- Japan
- Prior art keywords
- discharge
- discharge tube
- envelope
- coated wire
- peripheral surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/38—Cold-cathode tubes
- H01J17/40—Cold-cathode tubes with one cathode and one anode, e.g. glow tubes, tuning-indicator glow tubes, voltage-stabiliser tubes, voltage-indicator tubes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/02—Details
- H01J17/30—Igniting arrangements
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- Lasers (AREA)
Abstract
(57)【要約】
【目的】放電の繰り返し周波数や累積放電回数の如何に
かかわらず安定した放電開始電圧特性を持ち、しかも内
部沿面放電が起こり難くて、寿命のばらつきが少ない放
電管を提供する。
【構成】アルカリ金属又はアルカリ土類金属の珪酸塩粉
末、及び炭素、金属、金属酸化物等の導電性微粒子から
選ばれたガス電離促進剤を含む絶縁性被膜線を、外囲器
の内周面、好ましくは外囲器の陰極側の端部に内方に突
出した鍔の内側面を除く内周面の陰極を囲む位置及び放
電間隙を囲む位置にわたって設けた溝部内に、ガス電離
促進剤を含む絶縁性被膜線を軸線に対して略均等に付設
して本考案の放電管を構成する。
(57) [Abstract] [Purpose] To provide a discharge tube that has stable discharge starting voltage characteristics regardless of the discharge repetition frequency and the cumulative number of discharges, that internal creeping discharge is unlikely to occur, and that has a small variation in life. . [Constitution] An insulating coated wire containing an alkali metal or alkaline earth metal silicate powder and a gas ionization accelerator selected from conductive fine particles of carbon, metal, metal oxide, etc. is attached to the inner circumference of the envelope. A gas ionization accelerator in a groove provided over a surface, preferably a position surrounding the cathode on the inner peripheral surface excluding the inner side surface of the flange protruding inward at the end on the cathode side of the envelope and a position surrounding the discharge gap. A discharge tube of the present invention is constructed by attaching an insulating coated wire including the above to the axis substantially evenly.
Description
【０００１】[0001]
本考案は放電管に係り、特に電圧制御用、ギャップスイッチ用、シャープナー ギャップなどに用いられる安定した放電開始特性を有する放電管に関する。 The present invention relates to a discharge tube, and more particularly to a discharge tube having stable discharge starting characteristics used for voltage control, gap switch, sharpener gap, and the like.
【０００２】[0002]
放電管は、例えば電圧制御装置やパルスレーザの始動時期を正確に制御するた めのギャップスイッチなどの用途に用いられている。このような目的に適する放 電管として、電気絶縁性筒体等からなる外囲器の両端に放電電極を取り付け、か つ不活性ガスを加圧封入した構造の放電管が知られている。 The discharge tube is used in applications such as a voltage control device and a gap switch for accurately controlling the start timing of a pulse laser. As a discharge tube suitable for such a purpose, there is known a discharge tube having a structure in which discharge electrodes are attached to both ends of an envelope made of an electrically insulating cylinder or the like and an inert gas is pressure-filled.
【０００３】 かかる放電管は、一般に放電の繰り返し周波数が低くなると放電開始が遅れて 放電電圧が上昇する傾向があるが、このような放電特性は好ましくなく、周波数 にかかわらず放電開始電圧が安定して正確であることが要求される。そのため、 例えば外囲器の内面にそれぞれの放電電極に続く線状の導電性膜などからなるト リガ線を設けることによって主放電の開始を促進するようにした放電管が提案さ れている。しかしこのような放電管では、放電が長時間繰り返される場合にはト リガ線が消耗してトリガ効果が持続しないうえ、外囲器の内面を伝わる異常放電 、いわゆる内部沿面放電が発生しやすくなる欠点がある。In such a discharge tube, generally, when the repetition frequency of the discharge becomes low, the discharge start tends to be delayed and the discharge voltage tends to rise. However, such a discharge characteristic is not preferable, and the discharge start voltage becomes stable regardless of the frequency. Required to be accurate. Therefore, for example, a discharge tube has been proposed in which a trigger wire composed of a linear conductive film that follows each discharge electrode is provided on the inner surface of the envelope to accelerate the start of main discharge. However, in such a discharge tube, when the discharge is repeated for a long time, the trigger wire is consumed and the trigger effect does not continue, and abnormal discharge that propagates along the inner surface of the envelope, so-called internal creeping discharge, is likely to occur. There are drawbacks.
【０００４】 そこで放電の繰り返し周波数が低いときでも放電開始の遅れを起こさないよう に、微量の導電性物質を外囲器の内面に分散付着させ（実開平３−６８３８９） たり、例えば図８（ａ）に示すように、アルカリ金属珪酸化合物などのガス電離 促進剤を含む絶縁性塗布剤２を外囲器１の内面に塗布する（特開平４−１３３２ ４４）ことによって、放電空間内ガスの予備電離を促進する解決法が提案された 。しかしこれらの方法を適用した放電管では安定した放電開始電圧を有するもの の、累積放電回数が多くなるにつれて内部沿面放電が発生しやすくなるという問 題を完全に解決することはできなかった。Therefore, in order to prevent a delay in the start of discharge even when the repetition frequency of discharge is low, a small amount of a conductive substance is dispersed and adhered to the inner surface of the envelope (actually open 3-68389). As shown in a), the insulating coating material 2 containing a gas ionization accelerator such as an alkali metal silicate compound is applied to the inner surface of the envelope 1 (JP-A-4-133244) so that the gas in the discharge space A solution was proposed that promotes preionization. However, although the discharge tubes to which these methods are applied have a stable discharge start voltage, the problem that internal creeping discharges tend to occur as the cumulative number of discharges increases could not be completely solved.
【０００５】 このような事情のもとで本出願人は、図８（ｂ）に示すように、ガス電離促進 剤を含む絶縁性被膜線３を外囲器１の内面の陰極４を囲む位置及び放電間隙を囲 む位置にわたって軸線に略平行に付着させた構造を有する放電管が、放電の繰り 返し周波数や累積放電回数の如何にかかわらず安定した放電開始電圧特性を持ち 、しかも内部沿面放電を起こさないことを見出し、かかる放電管について実用新 案登録出願をしている（実願平４−６９５３９）。しかしこのような構造の放電 管は、従来技術の放電管よりはるかに内部沿面放電を起こしにくいものの被膜線 ３の長さや幅を一定に制御することが難しく、寿命のばらつきを無くすことがで きなかった。Under these circumstances, the applicant of the present invention, as shown in FIG. 8 (b), positions the insulating coated wire 3 containing the gas ionization accelerator around the cathode 4 on the inner surface of the envelope 1. The discharge tube has a structure in which it is attached substantially parallel to the axis over the position surrounding the discharge gap and has stable discharge start voltage characteristics regardless of the discharge repetition frequency and the cumulative number of discharges, and the internal creeping discharge We have found that the above problem does not occur, and have filed a utility model registration application for such a discharge tube (Japanese Patent Application 4-69539). However, although the discharge tube having such a structure is much less likely to cause internal creeping discharge than the discharge tubes of the prior art, it is difficult to control the length and width of the coated wire 3 to be constant, and it is possible to eliminate variations in life. There wasn't.
【０００６】[0006]
本考案はこのような事情のもとで、放電の繰り返し周波数や累積放電回数の如 何にかかわらず安定した放電開始電圧特性を持ち、しかも内部沿面放電が起こり 難くて、寿命のばらつきが少ない放電管を提供することを目的としたものである 。 Under the circumstances, the present invention has stable discharge starting voltage characteristics regardless of the discharge repetition frequency and the cumulative number of discharges, and the internal creeping discharge is unlikely to occur, and the discharge has a small variation in life. It is intended to provide tubes.
【０００７】[0007]
本考案の放電管は、外囲器内周面の陰極を囲む位置及び放電間隙を囲む位置に わたって設けた溝部内に、ガス電離促進剤を含む絶縁性被膜線を軸線に対して略 均等に付設したことを特徴とする。 また本考案の放電管において、外囲器の陰極側端部に内方に突出した鍔を形成 し、該鍔の内側面を除いた内周面位置にガス電離促進剤を含む絶縁性被膜線を付 設することによって更に確実な効果が期待できる。なお、本考案において外囲器 の内周面に設けられる絶縁性被膜線は、例えばアルカリ金属又はアルカリ土類金 属の珪酸塩粉末、及び炭素、金属、金属酸化物等の導電性微粒子から選ばれたガ ス電離促進剤を含むものである。 In the discharge tube of the present invention, an insulating coated wire containing a gas ionization accelerator is provided substantially evenly with respect to the axial line in a groove provided in a position surrounding the cathode on the inner peripheral surface of the envelope and a position surrounding the discharge gap. It is characterized by being attached to. Further, in the discharge tube of the present invention, an inwardly projecting flange is formed at the cathode side end of the envelope, and an insulating coated wire containing a gas ionization accelerator is provided at the inner peripheral surface position excluding the inner surface of the flange. A more reliable effect can be expected by attaching the. In the present invention, the insulating coated wire provided on the inner peripheral surface of the envelope is selected from, for example, silicate powder of alkali metal or alkaline earth metal and conductive fine particles such as carbon, metal and metal oxide. Gas ionization accelerators.
【０００８】[0008]
【作用】 本考案の放電管は、放電の繰り返し周波数が低い場合でも安定な放電開始特性 を示し、しかも長時間連続的に使用しても内部沿面放電を起こさず、寿命のばら つきが少ない。[Advantage] The discharge tube of the present invention exhibits stable discharge initiation characteristics even when the discharge repetition frequency is low, and does not cause internal creeping discharge even if it is continuously used for a long time, and has a small variation in life.
【０００９】[0009]
（実施例１） 図１に示すように、外周面が径１０mmの円柱面で内周面が対角線長７．５mmの 正六角柱面であり、長さが１７mmで、その一端から内向きに厚さ１．５mmの鍔１ ａを径３．５mmの孔を残すように突出して設けた筒形のセラミック外囲器１を用 い、その内周面に形成された６本の平行な三角溝部１ｂに、バリウムソーダ系珪 酸ガラス粉末（日本電気硝子製、商品番号ＳＴ−Ｗ／Ｋ）を水に分散させた塗料 を、鍔１ａの内側面位置から幅約１mmで５mmの長さに塗布して乾燥させ、被膜線 ３を形成した。次いで外径３mmで先端までの長さが３mmの円柱状陰極４を鍔１ａ の孔から挿入して陰極とした。更に外囲器１の他端から外径３mmで先端までの長 さが１１mmの円柱状陽極５を陰極４と向かい合うように挿入して、先端面相互の 間隔が３mmとなるように固定した。 そして、アルゴンガスを約１１atm まで圧入して封止し、本考案の放電管Ａを 得た。 (Example 1) As shown in FIG. 1, the outer peripheral surface is a cylindrical surface having a diameter of 10 mm, and the inner peripheral surface is a regular hexagonal cylindrical surface having a diagonal length of 7.5 mm. The length is 17 mm, and the thickness is inward from one end thereof. Using a cylindrical ceramic envelope 1 provided by projecting a 1.5 mm long collar 1a so as to leave a hole with a diameter of 3.5 mm, six parallel triangular groove portions formed on the inner peripheral surface thereof. 1b is coated with barium soda silicate glass powder (manufactured by Nippon Electric Glass Co., Ltd., product number ST-W / K) in water with a width of about 1 mm and a length of 5 mm from the inner side surface of the collar 1a. And dried to form a coated wire 3. Then, a cylindrical cathode 4 having an outer diameter of 3 mm and a length to the tip of 3 mm was inserted from the hole of the collar 1a to form a cathode. Further, a cylindrical anode 5 having an outer diameter of 3 mm and a length of 11 mm from the other end of the envelope 1 to the cathode 4 was inserted so as to face the cathode 4 and fixed so that the distance between the tip surfaces was 3 mm. Then, argon gas was press-fitted to about 11 atm and sealed to obtain a discharge tube A of the present invention.
【００１０】 （実施例２） 図２に示すように、鍔１ａを一端から０．２５mmだけ内側にずらした位置に設 けた他は実施例１と同様な形状のセラミック外囲器１を用い、アルミナ微粉末５ 部とカーボンブラック１部との混合物を２０％アルコール含有水に分散させた塗 料を塗布して被膜線３を形成した他は実施例１と全く同様にして、本考案の放電 管Ｂを得た。Example 2 As shown in FIG. 2, a ceramic envelope 1 having the same shape as in Example 1 was used except that the collar 1a was displaced inward by 0.25 mm from one end. The discharge of the present invention was carried out in the same manner as in Example 1 except that a coated wire 3 was formed by applying a coating material prepared by dispersing a mixture of 5 parts of alumina fine powder and 1 part of carbon black in water containing 20% alcohol. Tube B was obtained.
【００１１】 （実施例３） 図３に示すように、内周面が鍔１ａの内側面位置で径が６．５mm、開放端で７ ．５mmの円錐面となっていて、鍔１ａの内側面位置より約２mm離れた位置から約 ５mm離れた位置までの間に内周面を１周する螺旋溝部１ｂを設けた他は実施例１ と同様な形状のセラミック外囲器１を用い、この螺旋溝部１ｂ内に被膜線３を形 成した他は実施例１と全く同様にして、本考案の放電管Ｃを得た。Third Embodiment As shown in FIG. 3, the inner peripheral surface has a diameter of 6.5 mm at the position of the inner side surface of the collar 1a and has an open end of 7. It is a conical surface of 5 mm, and except that the spiral groove portion 1 b that makes one round of the inner peripheral surface is provided between the position about 2 mm away from the inner side surface of the collar 1 a and the position about 5 mm apart from the inner side surface of the collar 1 a. A discharge tube C of the present invention was obtained in exactly the same manner as in Example 1 except that the ceramic envelope 1 having the same shape was used and the coated wire 3 was formed in the spiral groove portion 1b.
【００１２】 （実施例４） 図４に示すように、内周面が実施例３と同様の円錐面となっていて、鍔１ａの 内側面位置より約１mm離れた位置から開放端に向かって、軸線から３．４５mmの 位置に底面が形成されるような幅２mmの角溝部１ｂを、内周面に１２０°間隔で ３本設けた他は実施例１と同様な形状のセラミック外囲器１を用い、これらの角 溝部１ｂ内に４mmの長さの被膜線３を形成した他は実施例１と全く同様にして、 本考案の放電管Ｄを得た。Fourth Embodiment As shown in FIG. 4, the inner peripheral surface is a conical surface similar to that of the third embodiment, and the position is about 1 mm away from the inner side surface of the collar 1a toward the open end. A ceramic envelope having the same shape as that of Example 1 except that three square groove portions 1b having a width of 2 mm and having a bottom surface formed at a position of 3.45 mm from the axis are provided on the inner peripheral surface at intervals of 120 °. 1 was used, and the coated wire 3 having a length of 4 mm was formed in the square groove portion 1b, and a discharge tube D of the present invention was obtained in the same manner as in Example 1.
【００１３】 （実施例５） 図５に示すように、内周面が鍔１ａの内側面位置から約５mm離れた位置までは 径６．５mmの円柱面となっていて、ここの鍔１ａの内側面位置より約１mm離れた 位置から深さ０．５mmで幅２mmの角溝部１ｂを内周面に１２０°間隔で３本設け 、そこから開放端までが径７．５mmの円柱面となっている他は実施例１と同様な 形状のセラミック外囲器１を用い、これらの角溝部１ｂ内に被膜線３を形成した 他は実施例１と全く同様にして、本考案の放電管Ｅを得た。Fifth Embodiment As shown in FIG. 5, the inner peripheral surface is a cylindrical surface having a diameter of 6.5 mm up to a position about 5 mm away from the inner side surface of the collar 1a. Three rectangular groove portions 1b with a depth of 0.5 mm and a width of 2 mm are provided on the inner peripheral surface at a distance of 1 mm from the position on the inner peripheral surface at 120 ° intervals, and from there to the open end a cylindrical surface with a diameter of 7.5 mm. Except that the ceramic envelope 1 having the same shape as that of the first embodiment is used and the coated wire 3 is formed in the square groove portions 1b, the discharge tube E of the present invention is manufactured in the same manner as in the first embodiment. Got
【００１４】 （実施例６） 図６に示すように、内周面が鍔１ａの内側面位置から約５mm離れた位置までは 実施例３と同様の円柱面で、更にここから径が７．５mmの開放端まで円錐面とな っており、この円柱面の鍔１ａの内側面位置より約１mm離れた位置から開放端に 向かって、軸線から３．４５mmの位置に底面が形成されるような幅２mmの角溝部 １ｂを内周面に１２０°間隔で３本設けた他は実施例１と同様な形状のセラミッ ク外囲器１を用い、これらの角溝部１ｂ内に被膜線３を形成した他は実施例１と 全く同様にして、本考案の放電管Ｆを得た。Sixth Embodiment As shown in FIG. 6, the inner peripheral surface is a cylindrical surface similar to that of the third embodiment up to a position about 5 mm away from the inner side surface of the collar 1a, and the diameter is 7. It has a conical surface up to the open end of 5 mm, and a bottom surface is formed at a position of 3.45 mm from the axis toward the open end from a position about 1 mm away from the position of the inner surface of the flange 1a of this cylindrical surface. A rectangular envelope 1b having a width of 2 mm is provided on the inner peripheral surface at three intervals of 120 °. A ceramic envelope 1 having the same shape as that of the first embodiment is used, and the coated wire 3 is formed in the square groove 1b. Except for the formation, the discharge tube F of the present invention was obtained in the same manner as in Example 1.
【００１５】 （実施例７） 図７に示すように、内周面が鍔１ａの内側面位置から約５mm離れた位置までは 実施例１と同様の六角柱面で、更にここから開放端までが内径８．０mmの円柱面 となっている他は実施例１と同様な形状のセラミック外囲器１を用い、これらの 三角溝部１ｂ内に被膜線３を形成した他は実施例１と全く同様にして、本考案の 放電管Ｇを得た。(Embodiment 7) As shown in FIG. 7, the inner peripheral surface is a hexagonal prism surface similar to that of Embodiment 1 up to a position about 5 mm away from the inner side surface of the collar 1a, and further from here to the open end. Is a cylindrical surface having an inner diameter of 8.0 mm, the ceramic envelope 1 having the same shape as that of the first embodiment is used, and the coated wire 3 is formed in the triangular groove portion 1b. Similarly, a discharge tube G of the present invention was obtained.
【００１６】 （比較例１） 図８の（ｂ）に示すように、外周面が径１０mmの円柱面で内周面が径７．５mm の円柱面であり、長さが１７mmで、その一端から内向きに厚さ１．５mmで幅２． ０mmの鍔１ａを突出して設けた筒形のセラミック外囲器１を用い、その内周面に １２０°の間隔で鍔１ａの内側面位置から５mmの長さに幅約２mmの被膜線３を形 成した他は実施例１と全く同様にして、比較用の放電管Ｈを得た。Comparative Example 1 As shown in FIG. 8B, the outer peripheral surface is a cylindrical surface with a diameter of 10 mm and the inner peripheral surface is a cylindrical surface with a diameter of 7.5 mm, and the length is 17 mm and one end thereof is From the inside inward with a thickness of 1.5 mm and a width of 2. Using a cylindrical ceramic envelope 1 provided with a 0 mm flange 1a protruding, a coated wire 3 having a width of about 2 mm and a length of 5 mm from the inner side surface of the flange 1a is provided on the inner peripheral surface thereof at intervals of 120 °. A discharge tube H for comparison was obtained in exactly the same manner as in Example 1 except for the formation.
【００１７】 （試験例） これらの放電管の各１０個についてそれぞれ陽極側を接地し、陰極に繰り返し 周波数０．２Hzの負の高電圧を印加して放電させ、内部沿面放電の発生の有無を 調べたところ、比較用の放電管Ｈは内部沿面放電の発生により電圧が低いうちに 放電が起こるまでの寿命のばらつきが累積放電回数で４０００万回から１億５０ ００万回と大きかったのに対し、本考案の放電管ＡないしＧはいずれも累積放電 回数が１億５０００万回以上でも安定した放電開始電圧を示しており、内部沿面 放電も発生しないことがわかった。(Test Example) For each of these 10 discharge tubes, the anode side was grounded, and a negative high voltage with a frequency of 0.2 Hz was repeatedly applied to the cathode to cause discharge. As a result of investigation, the discharge tube H for comparison had a large variation in the life until the discharge occurred while the voltage was low due to the occurrence of the internal creeping discharge, from 40 million times to 150 million times in cumulative discharge times. On the other hand, it was found that the discharge tubes A to G of the present invention all showed a stable discharge starting voltage even when the cumulative number of discharges was 150 million times or more, and no internal creeping discharge was generated.
【００１８】[0018]
本考案の放電管は、ガス電離促進剤を含む絶縁性被膜を外囲器内周面の溝部内 に塗布してあるために、放電開始電圧が安定しているばかりでなく、長時間の繰 り返し放電を行ってもバラツキのない安定した放電特性を維持し、長寿命で信頼 性が高いという効果がある。 Since the discharge tube of the present invention is coated with the insulating coating containing the gas ionization accelerator in the groove on the inner peripheral surface of the envelope, not only the discharge starting voltage is stable, but also the long-term repeating operation. It has the effects of maintaining stable discharge characteristics with no fluctuations even after repetitive discharge, and having a long life and high reliability.
【図１】本考案の放電管Ａの構造を示す断面図である。FIG. 1 is a sectional view showing the structure of a discharge tube A of the present invention.
【図２】本考案の放電管Ｂに用いた外囲器鍔部の構造を
示す断面図である。FIG. 2 is a cross-sectional view showing the structure of the flange portion of the envelope used in the discharge tube B of the present invention.
【図３】本考案の放電管Ｃに用いた外囲器の構造を示す
断面図である。FIG. 3 is a cross-sectional view showing a structure of an envelope used for the discharge tube C of the present invention.
【図４】本考案の放電管Ｄに用いた外囲器の構造を示す
断面図である。FIG. 4 is a cross-sectional view showing a structure of an envelope used in the discharge tube D of the present invention.
【図５】本考案の放電管Ｅに用いた外囲器の構造を示す
断面図である。FIG. 5 is a cross-sectional view showing the structure of an envelope used in the discharge tube E of the present invention.
【図６】本考案の放電管Ｆに用いた外囲器の構造を示す
断面図である。FIG. 6 is a cross-sectional view showing the structure of an envelope used in the discharge tube F of the present invention.
【図７】本考案の放電管Ｇに用いた外囲器の構造を示す
断面図である。FIG. 7 is a cross-sectional view showing a structure of an envelope used for the discharge tube G of the present invention.
【図８】従来の放電管の構造を示し、（ａ）はガス電離
促進剤を使用した従来の放電管の断面図、（ｂ）はその
改良技術に基づく比較用の放電管Ｈの断面図である。8A and 8B show a structure of a conventional discharge tube, FIG. 8A is a sectional view of a conventional discharge tube using a gas ionization accelerator, and FIG. 8B is a sectional view of a comparative discharge tube H based on the improved technique. Is.
１ 外囲器 １ａ 鍔 １ｂ 溝部 ２ 塗布剤 ３ 被膜線 ４ 陰極 ５ 陽極 1 Enclosure 1a Tsuba 1b Groove 2 Coating agent 3 Coated wire 4 Cathode 5 Anode
───────────────────────────────────────────────────── フロントページの続き (72)考案者 三谷 哲也 静岡県裾野市御宿1500 矢崎総業株式会社 内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tetsuya Mitani 1500 Onjuku, Susono, Shizuoka Prefecture Yazaki Corporation
Claims (3)
間隙を囲む位置にわたって設けた溝部内に、ガス電離促
進剤を含む絶縁性被膜線を軸線に対して略均等に付設し
たことを特徴とする放電管。1. An insulative coated wire containing a gas ionization promoter is provided approximately evenly with respect to the axis in a groove provided on a position surrounding the cathode and a position surrounding the discharge gap on the inner peripheral surface of the envelope. Discharge tube characterized by.
を形成し、ガス電離促進剤を含む絶縁性被膜線を該鍔の
内側面を除いた内周面位置に付設したことを特徴とする
請求項１記載の放電管。2. A flange projecting inward is formed at the cathode side end of the envelope, and an insulating coated wire containing a gas ionization accelerator is attached to the inner peripheral surface position excluding the inner surface of the flange. The discharge tube according to claim 1, wherein:
ルカリ土類金属の珪酸塩粉末、及び炭素、金属、金属酸
化物等の導電性微粒子から選ばれたものである請求項１
記載の放電管。3. The gas ionization accelerator is selected from silicate powder of alkali metal or alkaline earth metal, and conductive fine particles such as carbon, metal and metal oxide.
The discharge tube described.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP108693U JPH0658592U (en) | 1993-01-20 | 1993-01-20 | Discharge tube |
| DE19944401280 DE4401280C2 (en) | 1993-01-20 | 1994-01-18 | Discharge tube |
| US08/183,291 US5466989A (en) | 1993-01-20 | 1994-01-19 | Discharge tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP108693U JPH0658592U (en) | 1993-01-20 | 1993-01-20 | Discharge tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0658592U true JPH0658592U (en) | 1994-08-12 |
Family
ID=11491697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP108693U Pending JPH0658592U (en) | 1993-01-20 | 1993-01-20 | Discharge tube |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0658592U (en) |
| DE (1) | DE4401280C2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5851486A (en) * | 1981-09-19 | 1983-03-26 | 株式会社白山製作所 | Gas discharge tube |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5817792U (en) * | 1981-07-28 | 1983-02-03 | 株式会社サンコ−シャ | Overvoltage protection element |
| JPH0368389U (en) * | 1989-11-07 | 1991-07-04 | ||
| JP2860335B2 (en) * | 1990-09-25 | 1999-02-24 | 矢崎総業株式会社 | Discharge tube |
| JP2573908Y2 (en) * | 1992-10-06 | 1998-06-04 | 矢崎総業株式会社 | Discharge tube |
-
1993
- 1993-01-20 JP JP108693U patent/JPH0658592U/en active Pending
-
1994
- 1994-01-18 DE DE19944401280 patent/DE4401280C2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5851486A (en) * | 1981-09-19 | 1983-03-26 | 株式会社白山製作所 | Gas discharge tube |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4401280C2 (en) | 1997-04-17 |
| DE4401280A1 (en) | 1994-08-11 |
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