JP2004327391A - Electrodeless discharge lamp - Google Patents

Electrodeless discharge lamp Download PDF

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Publication number
JP2004327391A
JP2004327391A JP2003124212A JP2003124212A JP2004327391A JP 2004327391 A JP2004327391 A JP 2004327391A JP 2003124212 A JP2003124212 A JP 2003124212A JP 2003124212 A JP2003124212 A JP 2003124212A JP 2004327391 A JP2004327391 A JP 2004327391A
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JP
Japan
Prior art keywords
base
discharge lamp
coupler unit
recess
electrodeless discharge
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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JP2003124212A
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Japanese (ja)
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JP4089498B2 (en
Inventor
Koji Hiramatsu
宏司 平松
Hidenori Kakehashi
英典 掛橋
Shigeki Matsuo
茂樹 松尾
Shohei Yamamoto
正平 山本
Hiroshi Ogasawara
宏 小笠原
Shingo Masumoto
進吾 増本
Shinji Hizuma
晋二 日妻
Kazuhiko Sakai
和彦 酒井
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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Priority to JP2003124212A priority Critical patent/JP4089498B2/en
Publication of JP2004327391A publication Critical patent/JP2004327391A/en
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Publication of JP4089498B2 publication Critical patent/JP4089498B2/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrodeless discharge lamp which can simply and safely be assembled. <P>SOLUTION: The electrodeless discharge lamp is provided with a bulb A having a bulb main body 2 with discharge gas 1 sealed and a cap body 3, and a coupler unit B having an induction coil 4 generating a high-frequency electromagnetic field in the bulb main body 2 mounting and fixing the bulb A. The bulb main body 2 is provided with a depressed part 5 fallen inward nearly in a cylindrical shape and an exhaust pipe part 6 set in protrusion nearly in a cylindrical shape in the depressed part 5 from nearly a center part of its rear end part and communicating with an inside of the bulb main body 2. The coupler unit B is to be inserted into the depressed part 5 at mounting and fixing of the bulb A, at which time, a guide protrusion 7 formed in nearly a cylindrical shape for the exhaust pipe part 6 to be inserted into is set at an inner periphery part of the cap main body 3 for inserting a tip end part of the coupler unit B and a depressed opening 5a of the depressed part 5 by relatively positioning them. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本願発明は、バルブがカプラユニットに装着固定され、このカプラユニットに設けられた誘導コイルにより発生する高周波電磁界の作用で、同バルブ内に封入された放電ガスが励起されることによって発光する無電極放電灯に関するものである。
【0002】
【従来の技術】
従来から、バルブ内に封入した放電ガスに高周波電磁界を作用させることにより、同放電ガスを励起して発光させるようにした無電極放電灯が、一般に知られている。そして、無電極放電灯は、バルブの内部に電極を有しないので、フィラメントが断線するという問題を生じることはなく不純物による黒化の影響も少なくて、数万時間にもおよぶ長寿命が得られるものであり、特に屋外用の照明装置として施工活用されている。
【0003】
又、無電極放電灯において、高周波電磁界をバルブ内の放電ガスに作用させるためには、一般に誘導コイルが用いられている。この場合、誘導コイルはバルブの外周に巻回されたり(外巻き方式)、バルブに形成される窪み部内で巻回されたり(内巻き方式)しているが、配光制御や見栄えの観点からは内巻き方式が有利とされている。誘導コイルが内巻き方式の無電極放電灯としては、例えば、特表2001−510632号公報に示されるようなものが公知である。
【0004】
この特表2001−510632号公報に示された無電極放電灯では、図11に示す如く、内部に放電ガス1が封入されるバルブ本体2とこのバルブ本体2に接続固定される口金体3とを有するバルブAと、前記放電ガス1を励起させるためバルブ本体2に高周波電磁界を発生させる誘導コイル4と、を備えている。そして、バルブ本体2は口金体3との結合部位内側で内方へ略筒状に凹んだ窪み部5を有しており、この窪み部5内にはその奥端部位略中央から同窪み部5と略同軸で小径の略筒状に突設されて同バルブ本体2内部と連通する排気管部6を有してもいる。
【0005】
この場合、誘導コイル4が軟磁性素材で略筒状に形成されたコア17の外周に巻回され、このコア17と共に同誘導コイル4は前記バルブ本体2の窪み部5内に挿入されるものであり、その際、前記排気管部6が略筒状の同コア17内部に挿通される。又、前記バルブ本体2の内部には放電ガス1として希ガスを伴う水銀が封入されており、同バルブ本体2の内面及び窪み部5の外側面(バルブ本体2の内部側の面)には蛍光層12が形成されている。そして、誘導コイル4により発生する高周波電磁界の作用で、バルブ本体2の内部に封入された放電ガス1が励起されることによって蛍光層12が発光するものである。
【0006】
【特許文献1】
特表2001−510632号公報
【0007】
【発明が解決しようとする課題】
ところで、上記バルブ本体2の排気管部6は、このバルブ本体2を製作する際に、ポンプ等の排気装置に接続して同バルブ本体2の内部ガスを排気し、放電ガス1と置換するためのものであり、その際、最後に同排気管部6の先端6aがバーナー等でチップオフして封じ切られるものである。そのため、上記の如き内巻き方式の無電極放電灯にあっては、排気管部6の先端6aが窪み部5の窪み開口5aから突出した形状となっている。
【0008】
それ故、上記従来の技術の無電極放電灯にあっては、前記窪み部5の窪み開口5aから突出した排気管部6の先端6aが破損し易くて、取り扱い難いものとなっていた。そして、上記の如く、排気管部6を略筒状のコア17の内部に挿通させ、このコア17と共に誘導コイル4をバルブ本体2の窪み部5内に挿入して組み立てる際、前記排気管部6の先端6aが同コア17に当たってこの排気管部6と共にバルブ本体2は破損し易いものであり、組立作業も慎重に行わねばならず困難なものとなっていた。
【0009】
本願発明は、上記従来の技術に鑑みて発明されたものであり、その課題は、簡単かつ安全に組み立てることができる無電極放電灯を提供することである。
【0010】
【課題を解決するための手段】
上記課題を解決するために、本願発明の無電極放電灯は、内部に放電ガスが封入されるバルブ本体とこのバルブ本体を固定するための口金体とを有するバルブと、前記放電ガスを励起させるためバルブ本体に高周波電磁界を発生させる誘導コイルを有して前記バルブが装着固定されるカプラユニットと、を備え、前記バルブ本体は口金体との結合部位内側で内方へ略筒状に凹んだ窪み部を有し、この窪み部内にはその奥端部位略中央から同窪み部と略同軸で小径の略筒状に突設されて同バルブ本体内部と連通する排気管部を有しており、バルブ装着固定時に前記カプラユニットは同窪み部内に挿入されるものであって、その際に同排気管部が挿通されるよう略筒状に形成されており、前記口金体を略筒状に貫通したものとして、その内周部位に同カプラユニットの先端部分と窪み部の窪み開口とを相互に位置合わせして挿入ガイドするガイド凸起を設けてなる。
【0011】
したがって、この場合、バルブ本体とこれを固定するための口金体とを有するバルブが、誘導コイルを有するカプラユニットに装着固定されて組み立てられるものである。ここでは、排気管部を略筒状のカプラユニットの内部に挿通し、このカプラユニットをバルブ本体の窪み部内に挿入するものである。その際、口金体の内周部位に設けられるガイド凸起により、カプラユニットの先端部分と窪み部の窪み開口とが相互に位置合わされて挿入ガイドされるので、この窪み部内には同カプラユニットがスムーズに挿入されると共に、このカプラユニットの内部には排気管部がスムーズに挿通される。それ故、カプラユニットを挿入する際の外力や衝撃力が窪み部や排気管部には加わり難く、スムーズに挿入されて同バルブ本体の破損も防止され、簡単かつ安全に組み立てることができる。
【0012】
【発明の実施の形態】
図1〜3は、本願請求項1〜3、5に対応した第一の実施形態である無電極放電灯を示している。この実施形態の無電極放電灯は、内部に放電ガス1が封入されるバルブ本体2とこのバルブ本体2を固定するための口金体3とを有するバルブAと、放電ガス1を励起させるためバルブ本体2に高周波電磁界を発生させる誘導コイル4を有して前記バルブAが装着固定されるカプラユニットBと、を備えている。
【0013】
この場合、バルブ本体2は口金体3との結合部位内側で内方へ略筒状に凹んだ窪み部5を有し、この窪み部5内にはその奥端部位略中央から同窪み部5と略同軸で小径の略筒状に突設されて同バルブ本体2の内部と連通する排気管部6を有している。そして、前記バルブAの装着固定時に、カプラユニットBは窪み部5内に挿入されるもので、その際に、排気管部6が挿通されるようにこのカプラユニットBは略筒状に形成されており、前記口金体3を略筒状に貫通したものとして、その内周部位に同カプラユニットBの先端部分と窪み部5の窪み開口5aとを相互に位置合わせして挿入ガイドするガイド凸起7を設けている。
【0014】
更に、この実施形態の無電極放電灯では、ガイド凸起7にテーパー部8及び直線部9を挿入方向手前側からこの順で配設し、テーパー部8ではカプラユニットBの先端部分が窪み部5の窪み開口5aに位置合わせされ、直線部9では同カプラユニットBが同窪み部5に中心軸合わせされるようになしている。ここで、ガイド凸起7の直線部8を窪み部5の内周面に対し面一状に略連続させて形成し、この窪み部5の窪み開口5aから突出する排気管部6の先端6aを同ガイド凸起7で囲まれる口金体3内の略中心に位置させてもいる。又、カプラユニットBの基端部分にフランジ部10を形成し、このフランジ部10の外周部位に口金体3の内周部位が嵌合されて、この口金体3を介しバルブ本体2が同カプラユニットBに固定されるようになしている。
【0015】
以下、この実施形態の無電極放電灯を、より具体的に説明する。バルブ本体2は透光性材料であるガラスで略球状に形成され、その一部分が突設されてこの突設部位には略円筒状に貫通した口金体3が接続固定されるものであり、同口金体3との接続固定部位内側で内方へ略筒状に凹んだ窪み部5を同材料で一体に形成している。又、窪み部5の奥端部位略中央からは略筒状の同窪み部5と略同軸でこれよりも小径の略筒状の排気管部6が一体に突設されており、この排気管部6の先端6aは同窪み部5の窪み開口5aから突出している。
【0016】
前記バルブ本体2の内面及び窪み部5の外側面(バルブ本体2の内部側の面)には保護膜11及び蛍光層12が塗布形成されており、同バルブ本体2の内部には放電ガス1として、例えば、アルゴンやクリプトンのような希ガスと水銀が封入されている。バルブ本体2の内部には前記排気管部6の基端口付近にアマルガムを収容した金属容器11が設けられており、このアマルガムは放電空間における水銀蒸気圧を制御するためのもので、同金属容器11は排気管部6内に挿入係合されるガラス棒14によって位置決め支持されており、同水銀蒸気圧の制御作用によって周囲温度の変化に対し良好な光特性が維持されるようになっている。
【0017】
又、放電ガス1を置換するための前記排気管部6は窪み部5内の中央に位置されており、同排気管部6の内部にはその先端6a付近に、金属支持線15に取着支持された金属メッシュ16が収容保持されており、この金属メッシュ16には、暗所始動補助剤として、例えば、CsOHのような仕事関数の小さい物質が塗布にて担持されている。そして、バルブ本体2の前記窪み部5の窪み開口5aの外側部分には、略円筒状で貫通した口金体3の端部開口内側部分が接続固定され、バルブAとして一体化されるものである。
【0018】
一方、カプラユニットBは全体として略筒状でその筒軸方向に貫通した形状であり、バルブAとの電気的な結合を良好なものとするために、前記窪み部5の内径より若干だけ小さい外径に形成され、この外径部位で誘導コイル4が巻回保持されており、同窪み部5と同軸となる略筒状に形成されている。又、カプラユニットBは、その外周に前記誘導コイル4が巻回保持されるフェライト製のコア17と、このコア17及び誘導コイル4で生じる熱を逃がす放熱シリンダ18と、同誘導コイル4を巻回保持させる際に位置決めとなるボビン19と、前記コア17の先端部分に取着される端部キャップ20と、を有している。
【0019】
なお、カプラユニットBの誘導コイル4には、図示しない、高周波電源から整合回路を介して高周波電力(電流)が効率良く供給されるものである。又、前記コア17及びボビン19は放熱シリンダ18の外周部位に装着されており、この放熱シリンダ18が略筒状でその筒軸方向に貫通した形状とされ、同放熱シリンダ18の内径は、上記バルブAの排気管部6が軸方向に挿通されるようこの排気管部6の外径よりも若干余裕をもって大きく形成されている。
【0020】
そして、上記バルブ本体2に接続固定されバルブAとして一体化される口金体3は、同接続固定される際、接着剤21によって接着されるだけでなく、バルブ本体2の窪み部5の窪み開口5aの外周に形成した帯状溝部22に口金体3の内側に突設した凸片23が係止されることで確実に嵌着固定される。又、前記カプラユニットBの基端部分には外方へ鍔状に突出したフランジ部10が形成されており、このフランジ部10の外周部位には口金体3の端部開口付近の内周部位が嵌合され、これによって、一体化されたバルブAは同カプラユニットBに対して納まり良く確実に装着固定される。
【0021】
なお、前記カプラユニットBの誘導コイル4に通じる配線は、略筒状に貫通した口金体3の内部を通じて同カプラユニットBから導出されるものであるが、同口金体3を導電材料で形成してこれを導通させてもよい。口金体3は合成樹脂や金属等で略円筒状に形成され、その内周部位にガイド凸起7が一体に突設されている。この場合、ガイド凸起7は口金体3のバルブ本体2が接続固定される側とは反対側の端部開口付近の内面に突設され、傾斜片部と直片部とを有する略L字状に折曲して同接続固定される側へと突出し、同傾斜片部の内側面がテーパー部8となり、同直片部の内側面が直線部9となるものである。
【0022】
前記ガイド凸起7は、図2(b)に示す如く、口金体3の内面に全周にわたって突設されても、図2(c)に示す如く、同内面の周方向で部分的に突設されてもよいものである。そして、ガイド凸起7のテーパー部8では、図3(a)に示す如く、カプラユニットBの先端部分が窪み部5の窪み開口5aに位置合わせされるようにガイドされて位置ズレが是正され、同ガイド凸起7の直線部9では、図3(b)に示す如く、同カプラユニットBが窪み部5に中心軸合わせされるようにガイドされて軸ズレが是正される。
【0023】
この場合、ガイド凸起7は、バルブAの排気管部6の先端6aと同じか、これよりもバルブ本体2が接続固定される側とは反対側の位置で、口金体3の内周部位に突設されている。それ故、前記カプラユニットBの先端部分の位置ズレや軸ズレが是正される際には、このカプラユニットBの先端部分がバルブAの排気管部6と接触しないように位置決めされる。又、その際、カプラユニットBの先端部分に付設された端部キャップ20の外周縁部分がガイド凸起7のテーパー部8或いは直線部9に摺接し、スムーズにガイドされて位置決めされる。更に、カプラユニットBはバルブAの窪み部5内に挿入されるが、ここでは、ガイド凸起7の直線部9で同カプラユニットBの外周が摺接ガイドされて、このカプラユニットBの内周面は排気管部6の外周面に接触しないようスムーズに挿入動作される。
【0024】
したがって、この実施形態の無電極放電灯においては、バルブ本体2とこれを固定するための略筒状に貫通した口金体3とを有するバルブAが、この口金体3の部分で誘導コイル4を有するカプラユニットBに装着固定されて、簡単な組立作業により組み立てられるものである。ここでは、排気管部6を略筒状のカプラユニットBの内部に挿通し、このカプラユニットBをバルブ本体2の窪み部5内に挿入するものであり、この場合、バルブAと同カプラユニットBとが相互に筒軸方向でスライド動作される。
【0025】
その際、口金体3の内周部位に設けられるガイド凸起7の作用により、カプラユニットBの先端部分と窪み部5の窪み開口5aとが相互に位置合わされて挿入ガイドされるので、この窪み部5内には同カプラユニットBの先端部分がスムーズに挿入されると共に、このカプラユニットBの内部には排気管部6がスムーズに挿通される。そのため、カプラユニットBをバルブ本体2の窪み部5内に挿入する際、同カプラユニットBの傾きや振れ動きが防止されてこれによる外力や衝撃力は窪み部5や排気管部6に加わり難く、スムーズに挿入されて同バルブ本体2の破損も防止され、簡単かつ安全にその組み立て作業が行われる。
【0026】
又、この実施形態の無電極放電灯においては、前記ガイド凸起7にテーパー部8及び直線部9が挿入方向手前側からこの順で配設されているので、図3(a)に示す如く、テーパー部8ではカプラユニットBの先端部分が窪み部5の窪み開口5aに位置合わせされ、この窪み部5及び排気管部6の中心軸線Pに同カプラユニットBの中心が略合致される。そして、図3(b)に示す如く、直線部9ではカプラユニットBが窪み部5に中心軸合わせされ、すなわち、この窪み部5及び排気管部6の中心軸線Pに同カプラユニットBの中心軸が略合致されて、両者間の軸ズレ(両軸相互間の傾斜角度α)は是正解消される。
【0027】
更に、前記ガイド凸起7の直線部9が窪み部5の内周面に対し面一状に略連続して形成されているので、両者間には大きな段差を生じておらず、口金体3から同窪み部5内へとカプラユニットBの先端部分が引っ掛かりなくよりスムーズに挿入される。しかも、前記窪み部5の窪み開口5aから排気管部6の先端6aは突出しているものであるが、この排気管部6の先端6aはガイド凸起7で囲まれる口金体3内の略中心に位置していることで包囲保護され、同ガイド凸起7のガイド作用で確実に位置合わせされて略筒状のカプラユニットBの内部に挿入される。
【0028】
又、この実施形態の無電極放電灯においては、カプラユニットBの基端部分にフランジ部10が形成され、このフランジ部10の外周部位に口金体3の内周部位が嵌合されるので、これにより、この口金体3を介してバルブ本体2は同カプラユニットBに対し簡単かつ確実に装着固定され、このカプラユニットBとバルブAとが外観良く納まって一体化される。
【0029】
図4、5は、本願請求項1〜5全てに対応した第二の実施形態である無電極放電灯を示している。この実施形態の無電極放電灯では、口金体3を分割して形成し、この分割された口金分割片3a、3bをバルブ本体2の窪み部5の窪み開口5a外側に配設し、各口金分割片3a、3bを結合一体化して、同バルブ本体2に同口金体3を接続固定している。この場合、略円筒状の口金体3全体が筒軸を中心にしてその両側へ対称に二分割した形状の口金分割片3a、3bに分割形成されている。
【0030】
そして、両口金分割片3a、3bは略円筒状となるように接合され、両者の外周に周方向で連続して形成された凹溝部24に締め付け部材25が嵌着されることで、同両口金分割片3a、3bは結合一体化され、口金体3となってバルブ本体2の窪み部5の窪み開口5a外側に挟着されるように接続固定される。なお、前記締め付け部材25としては、バンドをリング状にしてボルト締め結合するものや、略半円状に分割されたリング分割片を相互に係止し結合一体化して締め付けるもの等を採用することができる。
【0031】
したがって、この実施形態の無電極放電灯においては、両口金分割片3a、3bをバルブ本体2の窪み部5の窪み開口5a外側で結合一体化することにより、同バルブ本体2に口金体3を接続固定することができるので、この接続固定によるバルブAそのものの組立作業も簡単かつ確実に行われるようになっている。なお、それ以外は、上記第一の実施形態と同様に構成され、上記第一の実施形態におけると同様の作用効果が奏される。
【0032】
図6、7は、本願請求項1〜5全てに対応した第三の実施形態である無電極放電灯を示している。この実施形態の無電極放電灯では、口金体3のバルブ本体2を接続固定する側の内周部分が別体として形成されており、この別体とされる部材を両側の口金分割片3a、3bに分割して形成し、両口金分割片3a、3bをバルブ本体2の窪み部5の窪み開口5a外側に配設し、同両口金分割片3a、3bを結合一体化して、同バルブ本体2に同口金体3を接続固定している。
【0033】
この場合、両側へ対称に二分割形成された口金分割片3a、3bを略円筒状となるように接合し、この接合状態で同両口金分割片3a、3bを口金体3の主体となる分割基体3cの内周に形成される切欠状の凹段部26に接合させて嵌着させることにより、両口金分割片3a、3b及び分割基体3cが結合一体化され口金体3となって、バルブ本体2の窪み部5の窪み開口5a外側に外観良く接続固定される。なお、それ以外は、上記第二の実施形態と同様に構成され、上記第二の実施形態におけると同様の作用効果が奏される。
【0034】
なお、上記第二、第三の実施形態の如く、口金体3が口金分割片3a、3bに分割形成される場合には、図8(a)に示す如く、両口金分割片3a、3bがその分割端部を相互に係止させることで結合一体化されても、図8(b)に示す如く、両口金分割片3a、3bがその分割端部を相互にボルトやビス等の結合具27により接続させることで結合一体化されてもよいものである。
【0035】
図9、10は、本願請求項1〜5全てに対応した第四の実施形態である無電極放電灯を示している。この実施形態の無電極放電灯では、ガイド凸起7が口金体3の中程部位の内面に突設され、バルブ本体2が接続固定される側とは反対側へ略L字状に折曲するよう突出されており、この略L字状となる一方の同口金体3の内面に沿った縦片部の内側面に、テーパー部8及び直線部9が挿入方向手前側からこの順で配設されている。なお、それ以外は、上記第三の実施形態と同様に構成され、上記第三の実施形態におけると同様の作用効果が奏される。
【0036】
【発明の効果】
本願請求項1記載の無電極放電灯においては、バルブ本体と口金体とを有するバルブが誘導コイルを有するカプラユニットに装着固定されて組み立てられる際に、カプラユニットによる外力や衝撃力が窪み部や排気管部には加わり難く、スムーズに挿入されてバルブ本体の破損も防止され、簡単かつ安全に組み立てることができる。
【0037】
本願請求項2記載の無電極放電灯においては、特に、ガイド凸起のテーパー部でカプラユニットの先端部分が窪み部の窪み開口に位置合わせされ、続いて直線部では同カプラユニットが窪み部に中心軸合わせされて、このカプラユニットは同窪み部に対して位置ズレや傾きなくよりスムーズに挿入される。
【0038】
本願請求項3記載の無電極放電灯においては、特に、ガイド凸起の直線部と窪み部の内周面との間に大きな段差が発生せず、口金体から同窪み部内へとカプラユニットは引っ掛かりなくよりスムーズに挿入され、しかも、排気管部の先端が同口金体内の略中心に位置して保護され、同ガイド凸起のガイド作用で確実に位置合わせされる。
【0039】
本願請求項4記載の無電極放電灯においては、特に、分割形成された口金分割片をバルブ本体の窪み部の窪み開口外側で結合一体化することにより、同バルブ本体に口金体を容易に接続固定することができて、この接続固定によるバルブの組立も簡単かつ確実なものとなる。
【0040】
本願請求項5記載の無電極放電灯においては、特に、カプラユニットの基端部分に形成されたフランジ部の外周部位に口金体の内周部位が嵌合されて、この口金体を介しバルブ本体は同カプラユニットに簡単かつ確実に装着固定され、このカプラユニットとバルブとが外観良く納まって一体化される。
【図面の簡単な説明】
【図1】本願発明の第一の実施形態である無電極放電灯を示す断面図。
【図2】同無電極放電灯におけるバルブの(a)は要部を示す断面図、(b)は口金体を示す底面図、(c)は口金体の別形態を例示する底面図。
【図3】同無電極放電灯における組立状態の(a)、(b)各別段階での要部を示す断面図。
【図4】本願発明の第二の実施形態である無電極放電灯のバルブ要部を示す断面図。
【図5】同無電極放電灯における口金体の分割状態を示す(a)は平面図、(b)は半断面図。
【図6】本願発明の第三の実施形態である無電極放電灯のバルブ要部を示す一部分解断面図。
【図7】同無電極放電灯における口金体を示す(a)は平面図、(b)は半断面図。
【図8】本願発明における口金体の別の分割形態を例示する(a)は平面図、(b)は要部平面図。
【図9】本願発明の第四の実施形態である無電極放電灯のバルブ要部を示す一部分解断面図。
【図10】同無電極放電灯における口金体を示す(a)は平面図、(b)は半断面図。
【図11】従来の技術である無電極放電灯を示す断面図。
【符号の説明】
A バルブ
B カプラユニット
1 放電ガス
2 バルブ本体
3 口金体
3a 口金分割片
3b 口金分割片
4 誘導コイル
5 窪み部
5a 窪み開口
6 排気管部
6a 先端
7 ガイド凸起
8 テーパー部
9 直線部
10 フランジ部
[0001]
TECHNICAL FIELD OF THE INVENTION
According to the present invention, a bulb is mounted and fixed to a coupler unit, and the action of a high-frequency electromagnetic field generated by an induction coil provided in the coupler unit excites a discharge gas sealed in the bulb to emit light. The present invention relates to an electrode discharge lamp.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been generally known an electrodeless discharge lamp in which a high-frequency electromagnetic field acts on a discharge gas sealed in a bulb to excite the discharge gas to emit light. And, since the electrodeless discharge lamp has no electrode inside the bulb, there is no problem that the filament is broken, the influence of blackening by impurities is small, and a long life span of tens of thousands hours can be obtained. It is used in construction as an outdoor lighting device.
[0003]
In addition, in an electrodeless discharge lamp, an induction coil is generally used to cause a high-frequency electromagnetic field to act on a discharge gas in a bulb. In this case, the induction coil is wound around the outer periphery of the bulb (outside winding method) or wound in a recess formed in the valve (inner winding method), but from the viewpoint of light distribution control and appearance. It is considered that the inner winding method is advantageous. As an electrodeless discharge lamp in which an induction coil has an inner winding system, for example, a lamp as shown in Japanese Patent Application Laid-Open No. 2001-510632 is known.
[0004]
In the electrodeless discharge lamp disclosed in Japanese Unexamined Patent Publication No. 2001-510632, as shown in FIG. 11, a bulb body 2 in which a discharge gas 1 is sealed, and a base body 3 connected and fixed to the bulb body 2 are provided. And an induction coil 4 for generating a high-frequency electromagnetic field in the valve body 2 to excite the discharge gas 1. The valve body 2 has a concave portion 5 which is recessed in a substantially cylindrical shape inwardly inside the joint portion with the base body 3, and the concave portion 5 is provided in the concave portion 5 from a substantially central portion at a rear end portion thereof. An exhaust pipe portion 6 which is substantially coaxial with and protrudes in a substantially cylindrical shape having a small diameter and communicates with the inside of the valve body 2 is also provided.
[0005]
In this case, the induction coil 4 is wound around the outer periphery of a substantially cylindrical core 17 made of a soft magnetic material, and the induction coil 4 is inserted into the recess 5 of the valve body 2 together with the core 17. At this time, the exhaust pipe 6 is inserted into the substantially cylindrical core 17. Mercury with a rare gas as the discharge gas 1 is sealed in the interior of the valve body 2, and the inner surface of the valve body 2 and the outer surface of the recess 5 (the inner surface of the valve body 2) are provided. A fluorescent layer 12 is formed. The fluorescent layer 12 emits light when the discharge gas 1 sealed in the bulb main body 2 is excited by the action of the high-frequency electromagnetic field generated by the induction coil 4.
[0006]
[Patent Document 1]
Japanese Unexamined Patent Publication No. 2001-510632
[Problems to be solved by the invention]
By the way, the exhaust pipe portion 6 of the valve body 2 is connected to an exhaust device such as a pump to exhaust the internal gas of the valve body 2 and replace the discharge gas 1 when manufacturing the valve body 2. At this time, the tip 6a of the exhaust pipe section 6 is cut off with a tip off with a burner or the like. Therefore, in the above-mentioned inner-wound type electrodeless discharge lamp, the tip 6a of the exhaust pipe portion 6 has a shape protruding from the recess opening 5a of the recess portion 5.
[0008]
Therefore, in the above-described conventional electrodeless discharge lamp, the distal end 6a of the exhaust pipe portion 6 protruding from the hollow opening 5a of the hollow portion 5 is easily damaged and difficult to handle. As described above, when the exhaust pipe 6 is inserted into the substantially cylindrical core 17 and the induction coil 4 is inserted into the recess 5 of the valve body 2 together with the core 17, the exhaust pipe 6 Since the tip 6a of the valve 6 contacts the core 17, the valve body 2 is easily damaged together with the exhaust pipe 6, and the assembling operation must be performed carefully and is difficult.
[0009]
The present invention has been made in view of the above conventional technology, and an object of the present invention is to provide an electrodeless discharge lamp that can be easily and safely assembled.
[0010]
[Means for Solving the Problems]
In order to solve the above problems, an electrodeless discharge lamp according to the present invention includes a bulb having a bulb body in which a discharge gas is sealed and a base for fixing the bulb body, and exciting the discharge gas. And a coupler unit having an induction coil for generating a high-frequency electromagnetic field in the valve body and to which the valve is mounted and fixed, wherein the valve body is recessed in a substantially cylindrical shape inwardly inside a joint portion with the base body. The hollow portion has an exhaust pipe portion protruding from a substantially central portion of a deep end portion of the hollow portion, substantially coaxial with the hollow portion, and projecting in a substantially cylindrical shape having a small diameter, and communicating with the inside of the valve body. The coupler unit is inserted into the recess at the time of mounting and fixing the valve, and is formed in a substantially cylindrical shape so that the exhaust pipe portion is inserted at that time, and the base body is formed in a substantially cylindrical shape. The inner peripheral part Comprising a guide protrusion force to the insertion guide in alignment with each other and recesses opening of the tip portion and the recessed portion of the coupler unit.
[0011]
Therefore, in this case, a valve having a valve body and a base for fixing the valve body is mounted and fixed to a coupler unit having an induction coil and assembled. Here, the exhaust pipe is inserted into a substantially cylindrical coupler unit, and the coupler unit is inserted into a recess of the valve body. At that time, the guide projection provided on the inner peripheral portion of the base body inserts and guides the distal end portion of the coupler unit and the recess opening of the recessed portion so that the coupler unit is inserted into the recessed portion. The exhaust pipe is smoothly inserted into the coupler unit while being smoothly inserted. Therefore, it is difficult for external force or impact force when the coupler unit is inserted to be applied to the concave portion or the exhaust pipe portion, and the coupler unit is smoothly inserted, the damage to the valve body is prevented, and the assembly can be performed easily and safely.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
FIGS. 1 to 3 show an electrodeless discharge lamp according to a first embodiment of the present invention. The electrodeless discharge lamp of this embodiment includes a bulb A having a bulb main body 2 in which a discharge gas 1 is sealed and a base 3 for fixing the bulb main body 2, and a bulb for exciting the discharge gas 1. A coupler unit B having an induction coil 4 for generating a high-frequency electromagnetic field in the main body 2 and to which the valve A is mounted and fixed.
[0013]
In this case, the valve body 2 has a concave portion 5 which is recessed in a substantially cylindrical shape inward on the inside of the joint portion with the base body 3, and the concave portion 5 is provided in the concave portion 5 from substantially the center at the rear end portion thereof. And an exhaust pipe portion 6 which is substantially coaxial with and protrudes into a small-diameter substantially cylindrical shape and communicates with the inside of the valve body 2. When the valve A is mounted and fixed, the coupler unit B is inserted into the recess 5. At this time, the coupler unit B is formed in a substantially cylindrical shape so that the exhaust pipe 6 is inserted therethrough. A guide projection for guiding the insertion by aligning the distal end portion of the coupler unit B and the recessed opening 5a of the recessed portion 5 with each other at the inner peripheral portion thereof assuming that the base body 3 penetrates in a substantially cylindrical shape. An activation 7 is provided.
[0014]
Further, in the electrodeless discharge lamp of this embodiment, the tapered portion 8 and the linear portion 9 are arranged in this order from the near side in the insertion direction on the guide protrusion 7, and the distal end portion of the coupler unit B in the tapered portion 8 is a concave portion. The coupler unit B is aligned with the center of the straight portion 9 in the straight portion 9. Here, the straight portion 8 of the guide protrusion 7 is formed substantially continuously with the inner peripheral surface of the recess 5 so as to be flush with the inner peripheral surface of the recess 5, and the tip 6 a of the exhaust pipe portion 6 protruding from the recess opening 5 a of the recess 5. Are positioned at substantially the center of the base body 3 surrounded by the guide protrusions 7. Further, a flange portion 10 is formed at a base end portion of the coupler unit B, and an inner peripheral portion of the base body 3 is fitted to an outer peripheral portion of the flange portion 10, and the valve body 2 is connected to the coupler body via the base body 3. It is configured to be fixed to the unit B.
[0015]
Hereinafter, the electrodeless discharge lamp of this embodiment will be described more specifically. The bulb body 2 is formed in a substantially spherical shape with glass as a light-transmitting material, and a part thereof is protruded, and a base 3 penetrating in a substantially cylindrical shape is connected and fixed to the protruding portion. A hollow portion 5 which is recessed in a substantially cylindrical shape inwardly inside the connection fixing portion with the base body 3 is integrally formed of the same material. A substantially cylindrical exhaust pipe portion 6 which is substantially coaxial with the substantially cylindrical concave portion 5 and has a smaller diameter than the substantially cylindrical hollow portion 5 is integrally provided from the approximate center of the deep end portion of the concave portion 5. The tip 6a of the portion 6 projects from the recess opening 5a of the recess 5.
[0016]
A protective film 11 and a fluorescent layer 12 are applied and formed on the inner surface of the valve body 2 and the outer surface of the recess 5 (the inner surface of the valve body 2). For example, a rare gas such as argon or krypton and mercury are sealed. A metal container 11 containing amalgam is provided near the base end of the exhaust pipe portion 6 inside the valve body 2, and this amalgam is for controlling the mercury vapor pressure in the discharge space. Reference numeral 11 is positioned and supported by a glass rod 14 inserted into and engaged with the exhaust pipe section 6, so that good optical characteristics are maintained against changes in ambient temperature by controlling the mercury vapor pressure. .
[0017]
The exhaust pipe 6 for replacing the discharge gas 1 is located at the center of the recess 5, and the exhaust pipe 6 is attached to the metal support wire 15 near its tip 6 a inside the exhaust pipe 6. A supported metal mesh 16 is accommodated and held, and a material having a small work function such as CsOH is applied to the metal mesh 16 by application as a dark place starting aid, for example. A substantially cylindrical inner end opening of the base 3 is connected and fixed to an outer portion of the recess opening 5 a of the recess 5 of the valve body 2, and is integrated as a valve A. .
[0018]
On the other hand, the coupler unit B is substantially cylindrical as a whole and has a shape penetrating in the direction of the cylinder axis thereof, and is slightly smaller than the inner diameter of the concave portion 5 in order to improve the electrical coupling with the valve A. The induction coil 4 is wound and held at the outer diameter portion, and is formed in a substantially cylindrical shape coaxial with the recess 5. Further, the coupler unit B has a ferrite core 17 around which the induction coil 4 is wound and held, a heat radiation cylinder 18 for releasing heat generated by the core 17 and the induction coil 4, and a winding around the induction coil 4. The bobbin has a bobbin 19 for positioning when rotating and holding, and an end cap 20 attached to a distal end portion of the core 17.
[0019]
The induction coil 4 of the coupler unit B is supplied with high-frequency power (current) efficiently from a high-frequency power supply (not shown) via a matching circuit. The core 17 and the bobbin 19 are mounted on an outer peripheral portion of a heat radiating cylinder 18. The heat radiating cylinder 18 has a substantially cylindrical shape and penetrates in the direction of the cylinder axis. The exhaust pipe 6 of the valve A is formed to be slightly larger than the outer diameter of the exhaust pipe 6 so as to be inserted in the axial direction.
[0020]
When the base body 3 is connected and fixed to the valve body 2 and integrated as the valve A, the base body 3 is not only adhered by the adhesive 21 when the connection and fixing are performed, but also the recess opening of the recess 5 of the valve body 2. The convex piece 23 protruding from the inside of the base body 3 is engaged with the band-shaped groove portion 22 formed on the outer periphery of 5a, so that it is securely fitted and fixed. Further, a flange portion 10 protruding outward in a flange shape is formed at a base end portion of the coupler unit B, and an inner peripheral portion near an end opening of the base body 3 is formed on an outer peripheral portion of the flange portion 10. Are fitted, whereby the integrated valve A is fitted and fixed in the coupler unit B with good fit.
[0021]
The wiring leading to the induction coil 4 of the coupler unit B is derived from the coupler unit B through the inside of the base 3 penetrating in a substantially cylindrical shape. The base 3 is formed of a conductive material. This may be conducted. The base body 3 is formed of a synthetic resin, metal, or the like into a substantially cylindrical shape, and a guide protrusion 7 is integrally provided at an inner peripheral portion thereof. In this case, the guide protrusion 7 is provided on the inner surface of the base body 3 near the end opening on the side opposite to the side where the valve body 2 is connected and fixed, and has a substantially L-shape having an inclined piece and a straight piece. The tapered portion protrudes to the side where the connection is fixed, and the inner surface of the inclined piece becomes the tapered portion 8, and the inner surface of the straight piece becomes the straight portion 9.
[0022]
The guide protrusion 7 is provided on the inner surface of the die body 3 as shown in FIG. 2B over the entire circumference, but partially protrudes in the circumferential direction of the inner surface as shown in FIG. 2C. It may be provided. Then, in the tapered portion 8 of the guide protrusion 7, as shown in FIG. 3A, the tip portion of the coupler unit B is guided so as to be aligned with the recessed opening 5 a of the recessed portion 5, and the positional deviation is corrected. 3B, the coupler unit B is guided so that the center axis of the coupler unit B is aligned with the recessed portion 5, so that the axial deviation is corrected.
[0023]
In this case, the guide protrusion 7 is located at the same position as the tip 6a of the exhaust pipe portion 6 of the valve A, or at a position on the opposite side to the side where the valve body 2 is connected and fixed. It is protruded. Therefore, when the positional deviation and the axial deviation of the distal end portion of the coupler unit B are corrected, the distal end portion of the coupler unit B is positioned so as not to contact the exhaust pipe portion 6 of the valve A. At this time, the outer peripheral edge of the end cap 20 attached to the distal end of the coupler unit B is in sliding contact with the tapered portion 8 or the linear portion 9 of the guide protrusion 7, and is guided and positioned smoothly. Further, the coupler unit B is inserted into the concave portion 5 of the valve A. Here, the outer periphery of the coupler unit B is slidably guided by the linear portion 9 of the guide projection 7, so that the inside of the coupler unit B is The peripheral surface is smoothly inserted so as not to contact the outer peripheral surface of the exhaust pipe portion 6.
[0024]
Therefore, in the electrodeless discharge lamp of this embodiment, the bulb A having the bulb main body 2 and the base 3 penetrating in a substantially cylindrical shape for fixing the same is used for the induction coil 4 at the base 3. It is mounted and fixed to a coupler unit B having the same and assembled by a simple assembling operation. Here, the exhaust pipe section 6 is inserted into a substantially cylindrical coupler unit B, and the coupler unit B is inserted into the recess 5 of the valve body 2. In this case, the valve A and the same coupler unit are used. B and B are mutually slid in the cylinder axis direction.
[0025]
At this time, the tip of the coupler unit B and the recess opening 5a of the recess 5 are aligned with each other and guided by the action of the guide protrusion 7 provided on the inner peripheral portion of the base body 3, so that the recess is formed. The distal end portion of the coupler unit B is smoothly inserted into the section 5, and the exhaust pipe section 6 is smoothly inserted into the coupler unit B. Therefore, when the coupler unit B is inserted into the concave portion 5 of the valve body 2, the inclination and swinging movement of the coupler unit B is prevented, and external force and impact force due to this are less likely to be applied to the concave portion 5 and the exhaust pipe portion 6. The valve body 2 can be smoothly inserted to prevent the valve body 2 from being damaged, and the assembling operation can be performed easily and safely.
[0026]
Further, in the electrodeless discharge lamp of this embodiment, since the tapered portion 8 and the linear portion 9 are arranged on the guide protrusion 7 in this order from the near side in the insertion direction, as shown in FIG. In the tapered portion 8, the tip of the coupler unit B is aligned with the recess opening 5a of the recess 5, and the center of the coupler unit B substantially matches the center axis P of the recess 5 and the exhaust pipe 6. Then, as shown in FIG. 3B, in the straight portion 9, the center of the coupler unit B is aligned with the recess 5, that is, the center of the coupler unit B is aligned with the center axis P of the recess 5 and the exhaust pipe 6. The axes are substantially aligned, and the misalignment between the two (the inclination angle α between the two axes) is corrected and eliminated.
[0027]
Further, since the linear portion 9 of the guide protrusion 7 is formed substantially continuously with the inner peripheral surface of the concave portion 5 so as to be flush with the inner peripheral surface, there is no large step between the two, and the die body 3 is formed. The tip portion of the coupler unit B is more smoothly inserted into the recess 5 without being caught. Moreover, the tip 6a of the exhaust pipe 6 protrudes from the recess opening 5a of the recess 5, and the tip 6a of the exhaust pipe 6 is substantially at the center in the base body 3 surrounded by the guide protrusion 7. , The surrounding is protected, and the positioning is surely performed by the guide action of the guide protrusion 7 and inserted into the substantially cylindrical coupler unit B.
[0028]
Further, in the electrodeless discharge lamp of this embodiment, the flange portion 10 is formed at the base end portion of the coupler unit B, and the inner peripheral portion of the base 3 is fitted to the outer peripheral portion of the flange portion 10, so that As a result, the valve body 2 is easily and reliably mounted and fixed to the coupler unit B via the base 3, and the coupler unit B and the valve A are housed in a good appearance and integrated.
[0029]
4 and 5 show an electrodeless discharge lamp according to a second embodiment corresponding to all of claims 1 to 5 of the present application. In the electrodeless discharge lamp of this embodiment, the base body 3 is divided and formed, and the divided base pieces 3a and 3b are arranged outside the hollow opening 5a of the hollow portion 5 of the bulb body 2, and each base is formed. The divided pieces 3a and 3b are joined and integrated, and the base 3 is connected and fixed to the valve body 2. In this case, the entire substantially cylindrical base 3 is divided into two base halves 3a and 3b which are symmetrically divided into two sides around the cylinder axis.
[0030]
The two base pieces 3a and 3b are joined so as to be substantially cylindrical, and a fastening member 25 is fitted into a concave groove 24 formed continuously in the circumferential direction on the outer periphery of the two base pieces. The base pieces 3a and 3b are combined and integrated into a base body 3 to be connected and fixed so as to be sandwiched outside the hollow opening 5a of the hollow portion 5 of the valve body 2. As the fastening member 25, a member formed by forming a band into a ring shape to be bolted together, or a member formed by locking ring divided pieces divided into a substantially semicircular shape to each other, joining them together, and tightening them are adopted. Can be.
[0031]
Therefore, in the electrodeless discharge lamp of this embodiment, the base body 3 is attached to the bulb main body 2 by integrally combining the two base divided pieces 3a and 3b outside the hollow opening 5a of the hollow portion 5 of the bulb main body 2. Since the connection can be fixed, the assembling work of the valve A itself by the connection and fixing can be easily and reliably performed. In other respects, the configuration is the same as that of the first embodiment, and the same operation and effect as those of the first embodiment are exerted.
[0032]
6 and 7 show an electrodeless discharge lamp according to a third embodiment corresponding to all of claims 1 to 5 of the present application. In the electrodeless discharge lamp of this embodiment, the inner peripheral portion of the base body 3 on the side to which the valve body 2 is connected and fixed is formed as a separate body. 3b, the two base pieces 3a, 3b are disposed outside the recess opening 5a of the recess 5 of the valve body 2, and the two base pieces 3a, 3b are combined and integrated to form the valve body. The base body 3 is connected and fixed to 2.
[0033]
In this case, the base pieces 3a, 3b formed symmetrically into two parts on both sides are joined so as to have a substantially cylindrical shape. In this joined state, the base pieces 3a, 3b are divided into the main parts of the base body 3. By joining and fitting to a notch-shaped concave step 26 formed on the inner periphery of the base 3c, the two base split pieces 3a, 3b and the split base 3c are combined and integrated into the base 3 to form the valve. It is connected and fixed with good appearance to the outside of the hollow opening 5a of the hollow portion 5 of the main body 2. Otherwise, the configuration is the same as that of the second embodiment, and the same operation and effect as in the second embodiment are exerted.
[0034]
In the case where the base body 3 is divided and formed into the base pieces 3a and 3b as in the second and third embodiments, the base pieces 3a and 3b are formed as shown in FIG. As shown in FIG. 8B, even if the divided ends are engaged and integrated by locking each other, the two die segments 3a and 3b connect the divided ends to each other with a fastener such as a bolt or a screw. 27 may be combined and integrated.
[0035]
9 and 10 show an electrodeless discharge lamp according to a fourth embodiment corresponding to all of claims 1 to 5 of the present application. In the electrodeless discharge lamp of this embodiment, the guide protrusion 7 is provided on the inner surface of the middle part of the base 3 and is bent in a substantially L-shape to the side opposite to the side where the valve body 2 is connected and fixed. The tapered portion 8 and the linear portion 9 are arranged in this order from the near side in the insertion direction on the inner surface of the vertical piece along the inner surface of the substantially L-shaped base 3. Is established. Otherwise, the configuration is the same as in the third embodiment, and the same operation and effect as in the third embodiment are exerted.
[0036]
【The invention's effect】
In the electrodeless discharge lamp according to claim 1 of the present application, when a bulb having a bulb main body and a base body is attached and fixed to a coupler unit having an induction coil and assembled, an external force and an impact force by the coupler unit are reduced to a recessed portion. It is hard to be added to the exhaust pipe, is inserted smoothly, and the valve body is prevented from being damaged, and can be easily and safely assembled.
[0037]
In the electrodeless discharge lamp according to claim 2 of the present application, in particular, the tip portion of the coupler unit is aligned with the recess opening of the recess at the tapered portion of the guide projection, and then the coupler unit is aligned with the recess at the straight portion. With the center axis aligned, this coupler unit can be more smoothly inserted into the recess without any positional deviation or inclination.
[0038]
In the electrodeless discharge lamp according to claim 3 of the present application, particularly, a large step does not occur between the linear portion of the guide projection and the inner peripheral surface of the recess, and the coupler unit is moved from the base body into the recess. The exhaust pipe is inserted more smoothly without being caught, and the tip of the exhaust pipe portion is located substantially at the center of the base body to be protected.
[0039]
In the electrodeless discharge lamp according to claim 4 of the present application, in particular, the base body is easily connected to the bulb body by combining and integrating the divided base pieces outside the recess opening of the recess portion of the valve body. The valve can be fixed, and the assembly of the valve by this connection and fixing becomes simple and reliable.
[0040]
In the electrodeless discharge lamp according to the fifth aspect of the present invention, the inner peripheral portion of the base is fitted to the outer peripheral portion of the flange formed at the base end of the coupler unit, and the valve body is inserted through the base. Is easily and securely mounted and fixed to the coupler unit, and the coupler unit and the valve are housed in a good appearance and integrated.
[Brief description of the drawings]
FIG. 1 is a sectional view showing an electrodeless discharge lamp according to a first embodiment of the present invention.
2A is a cross-sectional view showing a main part of a bulb in the electrodeless discharge lamp, FIG. 2B is a bottom view showing a base body, and FIG. 2C is a bottom view illustrating another form of the base body.
FIGS. 3A and 3B are cross-sectional views showing main parts at different stages of the assembled state of the electrodeless discharge lamp in FIGS.
FIG. 4 is a sectional view showing a main part of a bulb of an electrodeless discharge lamp according to a second embodiment of the present invention.
5A is a plan view and FIG. 5B is a half sectional view showing a divided state of a base body in the electrodeless discharge lamp.
FIG. 6 is a partially exploded sectional view showing a main part of a bulb of an electrodeless discharge lamp according to a third embodiment of the present invention.
7A is a plan view showing a base body of the electrodeless discharge lamp, and FIG.
8 (a) is a plan view and FIG. 8 (b) is a plan view of a main part, illustrating another divided form of the die body in the present invention.
FIG. 9 is a partially exploded sectional view showing a main part of a bulb of an electrodeless discharge lamp according to a fourth embodiment of the present invention.
FIGS. 10A and 10B are a plan view and a half-sectional view, respectively, showing a base body of the electrodeless discharge lamp.
FIG. 11 is a sectional view showing a conventional electrodeless discharge lamp.
[Explanation of symbols]
Reference Signs List A Valve B Coupler unit 1 Discharge gas 2 Valve body 3 Base 3a Base split piece 3b Base split piece 4 Induction coil 5 Depression 5a Depression opening 6 Exhaust pipe 6a Tip 7 Guide projection 8 Tapered section 9 Straight section 10 Flange section

Claims (5)

内部に放電ガスが封入されるバルブ本体とこのバルブ本体を固定するための口金体とを有するバルブと、前記放電ガスを励起させるためバルブ本体に高周波電磁界を発生させる誘導コイルを有して前記バルブが装着固定されるカプラユニットと、を備えた無電極放電灯であって、前記バルブ本体は口金体との結合部位内側で内方へ略筒状に凹んだ窪み部を有し、この窪み部内にはその奥端部位略中央から同窪み部と略同軸で小径の略筒状に突設されて同バルブ本体内部と連通する排気管部を有しており、バルブ装着固定時に前記カプラユニットは同窪み部内に挿入されるもので、その際に同排気管部が挿通されるよう略筒状に形成されており、前記口金体を略筒状に貫通したものとして、その内周部位に同カプラユニットの先端部分と窪み部の窪み開口とを相互に位置合わせして挿入ガイドするガイド凸起を設けてなる無電極放電灯。A valve having a valve body in which a discharge gas is sealed and a base for fixing the valve body, and an induction coil for generating a high-frequency electromagnetic field in the valve body to excite the discharge gas. And a coupler unit to which the bulb is mounted and fixed, wherein the bulb main body has a concave portion which is recessed in a substantially cylindrical shape inwardly inside a coupling portion with the base body, and The inside of the section has an exhaust pipe section which is provided substantially in the form of a small-diameter cylinder substantially coaxial with the recess section from the approximate center of the rear end portion thereof and communicates with the inside of the valve body. Is inserted into the recessed portion, and is formed in a substantially cylindrical shape so that the exhaust pipe portion is inserted at that time, and assuming that the base body penetrates in a substantially cylindrical shape, an inner peripheral portion thereof is provided. Tip and recess of the coupler unit An electrodeless discharge lamp comprising a guide protrusion force to the insertion guide and align the recess opening to the other. ガイド凸起にテーパー部及び直線部を挿入方向手前側からこの順で配設し、テーパー部ではカプラユニットの先端部分が窪み部の窪み開口に位置合わせされ、直線部では同カプラユニットが同窪み部に中心軸合わせされるようになしたことを特徴とする請求項1記載の無電極放電灯。A taper section and a straight section are arranged in this order from the near side in the insertion direction on the guide projection, and the tip of the coupler unit is aligned with the recess opening of the recess in the taper section, and the coupler unit is recessed in the straight section 2. The electrodeless discharge lamp according to claim 1, wherein the center axis is aligned with the portion. ガイド凸起の直線部を窪み部の内周面に対し面一状に略連続させて形成し、この窪み部の窪み開口から突出する排気管部の先端を同ガイド凸起で囲まれる口金体内の略中心に位置させたことを特徴とする請求項2記載の無電極放電灯。A straight portion of the guide projection is formed substantially flush with the inner peripheral surface of the recess, and the tip of an exhaust pipe protruding from the recess opening of the recess is surrounded by the guide projection. 3. The electrodeless discharge lamp according to claim 2, wherein the electrodeless discharge lamp is positioned substantially at the center of the electrodeless discharge lamp. 口金体を分割して形成し、この分割された口金分割片をバルブ本体の窪み部の窪み開口外側に配設し、各口金分割片を結合一体化して、同バルブ本体に同口金体を接続固定したことを特徴とする請求項1〜3のいずれか一つに記載の無電極放電灯。The base body is divided and formed, and the split base pieces are arranged outside the recess opening of the hollow portion of the valve body, and the base pieces are combined and integrated, and the base body is connected to the valve body. The electrodeless discharge lamp according to claim 1, wherein the discharge lamp is fixed. カプラユニットの基端部分にフランジ部を形成し、このフランジ部の外周部位に口金体の内周部位が嵌合されて、この口金体を介しバルブ本体が同カプラユニットに固定されるようになしたことを特徴とする請求項1〜4のいずれか一つに記載の無電極放電灯。A flange portion is formed at a base end portion of the coupler unit, and an inner peripheral portion of the base is fitted to an outer peripheral portion of the flange, so that the valve body is fixed to the coupler unit via the base. The electrodeless discharge lamp according to any one of claims 1 to 4, wherein:
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WO2007023572A1 (en) * 2005-08-26 2007-03-01 Matsushita Electric Works, Ltd. Electrodeless discharge lamp
JP2008059936A (en) * 2006-08-31 2008-03-13 Matsushita Electric Works Ltd Electrodeless discharge lamp device, and lighting fixture
JP2008059935A (en) * 2006-08-31 2008-03-13 Matsushita Electric Works Ltd Electrodeless discharge lamp and lighting fixture
EP1918975A1 (en) * 2005-08-26 2008-05-07 Matsushita Electric Works, Ltd. Electrodeless discharge lamp and lighting fixture equipped with such electrodeless discharge lamp
JP2008243503A (en) * 2007-03-27 2008-10-09 Matsushita Electric Works Ltd Electrodeless discharge lamp and lighting fixture using it

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CN105805624B (en) * 2016-04-28 2018-05-15 东莞市闻誉实业有限公司 Desk lamp

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JPH1154090A (en) * 1997-07-30 1999-02-26 Matsushita Electric Works Ltd Electrodeless discharge lamp device
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JPH08511650A (en) * 1994-04-11 1996-12-03 ジーイー ライティング リミテッド Tube mounting structure for electrodeless discharge lamp
JPH10321194A (en) * 1997-05-21 1998-12-04 Matsushita Electric Works Ltd Electrodeless discharge lamp
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Publication number Priority date Publication date Assignee Title
WO2007023572A1 (en) * 2005-08-26 2007-03-01 Matsushita Electric Works, Ltd. Electrodeless discharge lamp
JP2007059358A (en) * 2005-08-26 2007-03-08 Matsushita Electric Works Ltd Electrodeless discharge lamp
EP1918975A1 (en) * 2005-08-26 2008-05-07 Matsushita Electric Works, Ltd. Electrodeless discharge lamp and lighting fixture equipped with such electrodeless discharge lamp
KR100922464B1 (en) * 2005-08-26 2009-10-21 파나소닉 전공 주식회사 Electrodeless discharge lamp
EP1918975A4 (en) * 2005-08-26 2011-04-06 Panasonic Elec Works Co Ltd Electrodeless discharge lamp and lighting fixture equipped with such electrodeless discharge lamp
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JP2008059936A (en) * 2006-08-31 2008-03-13 Matsushita Electric Works Ltd Electrodeless discharge lamp device, and lighting fixture
JP2008059935A (en) * 2006-08-31 2008-03-13 Matsushita Electric Works Ltd Electrodeless discharge lamp and lighting fixture
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JP4655009B2 (en) * 2006-08-31 2011-03-23 パナソニック電工株式会社 Electrodeless discharge lamp device and lighting fixture
JP2008243503A (en) * 2007-03-27 2008-10-09 Matsushita Electric Works Ltd Electrodeless discharge lamp and lighting fixture using it

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