JP2008153173A - External electrode type fluorescent lamp - Google Patents

External electrode type fluorescent lamp Download PDF

Info

Publication number
JP2008153173A
JP2008153173A JP2006342813A JP2006342813A JP2008153173A JP 2008153173 A JP2008153173 A JP 2008153173A JP 2006342813 A JP2006342813 A JP 2006342813A JP 2006342813 A JP2006342813 A JP 2006342813A JP 2008153173 A JP2008153173 A JP 2008153173A
Authority
JP
Japan
Prior art keywords
discharge tube
electrodes
outer peripheral
power supply
frequency power
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.)
Pending
Application number
JP2006342813A
Other languages
Japanese (ja)
Inventor
Takeshi Furukawa
武 古川
Koji Hasebe
浩二 長谷部
Junya Mizukai
潤也 水貝
Hitoshi Tamura
仁 田村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GOLD KING CO Ltd
GOLD KING KK
Original Assignee
GOLD KING CO Ltd
GOLD KING KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GOLD KING CO Ltd, GOLD KING KK filed Critical GOLD KING CO Ltd
Priority to JP2006342813A priority Critical patent/JP2008153173A/en
Publication of JP2008153173A publication Critical patent/JP2008153173A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an external electrode type fluorescent lamp capable of emitting light without impressing a high high-frequency power supply voltage by a large-scale high-frequency power supply device on a discharge tube into which discharge medium other than mercury is filled. <P>SOLUTION: The external electrode type fluorescent lamp 1 is constructed of a discharge tube 2 formed by sealing both end parts of a cylinder, xenon gas 3 filled in the discharge tube 2, a phosphor 4 installed at the inner periphery face of the discharge tube 2, a pair of outer periphery electrodes 5, 5 which is installed at both end parts in axial direction in the outer periphery face of the discharge tube 2, and a pair of outer face electrodes 6, 6 which is installed so as to be opposed to each other at the outer periphery face of the discharge tube 2 and extend in the axial direction and of which each one end part is electrically connected to the mutually different outer periphery electrode 5, 5 of the pair of the outer periphery electrodes 5, 5. Metal fabric tapes 7, 7 are installed at the outer periphery face of the outer periphery electrodes 5, 5, and glass fabric tapes 8, 8 are installed on the outer periphery face of the metal fabric tapes 7, 7. A high-frequency power supply device 9 to impress high-frequency power supply voltage is electrically connected to the pair of outer periphery electrodes 5, 5. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、水銀以外の放電媒体を用いる外部電極型蛍光ランプに関する。   The present invention relates to an external electrode fluorescent lamp using a discharge medium other than mercury.

製品の組み立てライン等の試験や検査に用いられる画像処理装置等の照明には、例えばガラス管（放電管）内に水銀、アルゴンガス及びネオンガスが封入された外部電極型蛍光ランプが用いられている。この外部電極型蛍光ランプは、放電管の外周面部の両端部に一対の電極（外周電極）が設けられ、放電管の内周面部に蛍光体が塗布された構成である（特許文献１参照）。そして、外周電極に高周波電圧を印加することにより、放電を生じさせ、その放電による電子が衝突する水銀から紫外線を生じさせ、この紫外線により蛍光体を励起発光させる。
特開２００５−１６６５５６号公報 For example, an external electrode type fluorescent lamp in which mercury, argon gas and neon gas are enclosed in a glass tube (discharge tube) is used for illumination of an image processing apparatus used for testing and inspection of a product assembly line or the like. . This external electrode type fluorescent lamp has a configuration in which a pair of electrodes (outer peripheral electrodes) are provided at both ends of the outer peripheral surface portion of the discharge tube, and a phosphor is applied to the inner peripheral surface portion of the discharge tube (see Patent Document 1). . Then, by applying a high frequency voltage to the outer peripheral electrode, a discharge is generated, and ultraviolet rays are generated from mercury colliding with electrons generated by the discharge, and the phosphors are excited and emitted by the ultraviolet rays.
JP 2005-166556 A

水銀は有害物質であるので、その使用を規制する傾向にあり、又、使用を禁止する事例もある（例えば、ＲｏＨＳ指令）。このため、外部電極型蛍光ランプにおいても水銀に代わる無害な放電媒体、例えばキセノンガスの使用が考えられている。しかしながら、キセノンガスは、水銀よりも励起開始電圧が高いので、例えば１万ボルト余りの高電圧を印加しないと放電を開始させることができない。従って、キセノンガスを使用した外部電極型蛍光ランプでは、高い高周波電源電圧を発生させるべく、大型のインバータ回路及び電圧を１万Ｖ余りに昇圧する昇圧トランスを備えた大規模な高周波電源装置が必要となり、高価になる。   Since mercury is a harmful substance, its use tends to be restricted, and there are cases where its use is prohibited (for example, the RoHS Directive). For this reason, the use of a harmless discharge medium instead of mercury, for example, xenon gas, is also considered in the external electrode fluorescent lamp. However, since xenon gas has a higher excitation start voltage than mercury, discharge cannot be started unless a high voltage of, for example, about 10,000 volts is applied. Therefore, an external electrode fluorescent lamp using xenon gas requires a large-scale high-frequency power supply device having a large inverter circuit and a step-up transformer that boosts the voltage to 10,000 V or more in order to generate a high-frequency power supply voltage. Become expensive.

本発明は、上記の事情に鑑みてなされたものであり、その目的は、水銀以外の放電媒体が封入された放電管に高い高周波電源電圧を印加しなくても、発光可能な外部電極型蛍光ランプを提供することである。   The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an external electrode type fluorescent lamp capable of emitting light without applying a high-frequency power supply voltage to a discharge tube in which a discharge medium other than mercury is enclosed. Is to provide a lamp.

本発明の外部電極型蛍光ランプは、内部に水銀以外の放電媒体が封入された放電管と、この放電管の内周面部に設けられた蛍光体と、前記放電管の外周面部における軸方向の両端部に設けられた一対の外周電極と、前記放電管の外周面部に互いに対応するように設けられ、軸方向に延びて、各一端部が前記一対の外周電極の互いに異なる外周電極に電気的に接続された一対の外面電極とを具備していることを特徴とするとしている。   An external electrode fluorescent lamp of the present invention includes a discharge tube in which a discharge medium other than mercury is enclosed, a phosphor provided on an inner peripheral surface portion of the discharge tube, and an axial direction of the outer peripheral surface portion of the discharge tube. A pair of outer peripheral electrodes provided at both ends and an outer peripheral surface portion of the discharge tube are provided so as to correspond to each other, extend in the axial direction, and each one end is electrically connected to different outer peripheral electrodes of the pair of outer peripheral electrodes. And a pair of external electrodes connected to each other.

本発明によれば、外部電極型蛍光ランプの電極を、放電管の外周面部の両端部に設けられた一対の外周電極と、放電管の外周面部に互いに対応するように設けられた一対の外面電極とから構成したので、外周電極と外面電極との相乗作用により、大規模な高周波電源装置による高い高周波電源電圧を印加しなくても発光させることができ、安価になし得る。   According to the present invention, the electrodes of the external electrode type fluorescent lamp are provided with a pair of outer peripheral electrodes provided at both ends of the outer peripheral surface portion of the discharge tube and a pair of outer surfaces provided so as to correspond to the outer peripheral surface portion of the discharge tube. Since it is composed of the electrodes, the synergistic action of the outer peripheral electrode and the outer surface electrode allows light to be emitted without applying a high-frequency power supply voltage from a large-scale high-frequency power supply device, which can be made inexpensively.

以下、本発明の一実施形態を、図面を参照して説明する。
図１は、外部電極型蛍光ランプ１の断面を示している。外部電極型蛍光ランプ１を構成する放電管２の内部には、水銀以外の放電媒体、例えばキセノンガス３が封入されている。放電管２は、円筒状の鉛を含まない硬質ガラス管の両端部を封止して形成されている。放電管２の内周面部にあって両端部を除く部分には、蛍光体４が設けられている。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a cross section of the external electrode fluorescent lamp 1. Inside the discharge tube 2 constituting the external electrode fluorescent lamp 1, a discharge medium other than mercury, for example, xenon gas 3 is sealed. The discharge tube 2 is formed by sealing both ends of a hard glass tube not containing cylindrical lead. A phosphor 4 is provided on a portion of the inner peripheral surface portion of the discharge tube 2 excluding both end portions.

放電管２の外周面部における軸方向の両端部には、一対の外周電極５，５が設けられている。外周電極５，５は金属箔のテープ、例えば銅箔テープからなり、この銅箔テープは、図１及び図２（ａ）に示すように、銅を主成分とする導電性薄膜５ａ，５ａと、導電性薄膜５ａ，５ａの裏面に設けられた導電性粘着部５ｂ，５ｂとから構成され、導電性粘着部５ｂ，５ｂが放電管２に貼り付けられる。導電性粘着部５ｂ，５ｂは、金属粉を含むアクリル系粘着剤であり、電気を通す性質を有している。   A pair of outer peripheral electrodes 5 and 5 are provided at both axial ends of the outer peripheral surface of the discharge tube 2. The outer peripheral electrodes 5 and 5 are made of a metal foil tape, for example, a copper foil tape. As shown in FIGS. 1 and 2A, the copper foil tape includes conductive thin films 5a and 5a mainly composed of copper. The conductive adhesive portions 5b and 5b are provided on the back surfaces of the conductive thin films 5a and 5a, and the conductive adhesive portions 5b and 5b are attached to the discharge tube 2. The conductive adhesive portions 5b and 5b are acrylic adhesives containing metal powder and have a property of conducting electricity.

放電管２の外周面部には、図１及び図２（ｂ）に示すように、互いに対応するように一対の外面電極６，６が設けられており、この外面電極６，６は、外周電極５，５と同じ材料、例えば銅箔テープからなり、導電性薄膜６ａ，６ａと導電性粘着部６ｂ，６ｂとから構成され、導電性粘着部６ｂ，６ｂが放電管２に貼り付けられる。外面電極６，６は、放電管２を軸方向に垂直に切断して示す図２（ｂ）に示すように、放電管２を周方向に６等分したうちの上半分側の両側部分に設けられ、放電管２の軸方向に沿って延びている。外面電極６，６の各一端部は、一対の外周電極５，５の互いに異なる外周電極５，５に電気的に接続され、外面電極６，６の各他端部は、対極をなす外周電極５，５に近接している。   As shown in FIG. 1 and FIG. 2B, a pair of outer surface electrodes 6 and 6 are provided on the outer peripheral surface portion of the discharge tube 2 so as to correspond to each other. 5 and 5, which are made of conductive foil 6 a, 6 a and conductive adhesive portions 6 b, 6 b, and the conductive adhesive portions 6 b, 6 b are attached to the discharge tube 2. As shown in FIG. 2B, the outer electrodes 6 and 6 are formed on both side portions on the upper half side of the discharge tube 2 divided into six equal parts in the circumferential direction. It is provided and extends along the axial direction of the discharge tube 2. One end of each of the outer electrodes 6 and 6 is electrically connected to different outer electrodes 5 and 5 of the pair of outer electrodes 5 and 5, and the other end of each of the outer electrodes 6 and 6 is an outer electrode forming a counter electrode 5 and 5 close.

一対の外周電極５，５の夫々の外周面部には、表面積が広く放散効果が高い放散片部材、例えば極細の電線等を織って構成された金属布テープ７，７（通称、平編電線）が外周電極５，５を覆うように設けられている。この金属布テープ７，７は、外周電極５，５に電気的に接続されている。   Metal cloth tapes 7 and 7 (commonly known as flat knitted electric wires) formed by weaving a radiating piece member having a large surface area and a high radiating effect, for example, a very thin electric wire, on the outer peripheral surface portions of the pair of outer peripheral electrodes 5 and 5. Is provided so as to cover the outer peripheral electrodes 5 and 5. The metal cloth tapes 7 and 7 are electrically connected to the outer peripheral electrodes 5 and 5.

金属布テープ７，７の夫々の外周面部には、金属布テープ７，７を覆うように、絶縁部材、例えばガラス布テープ８，８が巻回され、ガラス布テープ８，８の内部に位置する外周電極５，５及び金属布テープ７，７は、外部と絶縁状態になる。   Insulating members, for example, glass cloth tapes 8 and 8 are wound around the outer peripheral surface portions of the metal cloth tapes 7 and 7 so as to cover the metal cloth tapes 7 and 7, and are positioned inside the glass cloth tapes 8 and 8. The outer peripheral electrodes 5 and 5 and the metal cloth tapes 7 and 7 are insulated from the outside.

一対の外周電極５，５間には、高周波電源電圧を印加する高周波電源装置９が電気的に接続されている。高周波電源装置９は、車両用の電源電圧（例えば直流１２Ｖ，２４Ｖ，１００Ｖ）や、商用電源電圧（例えば交流１００Ｖ，２００Ｖ）をスイッチング電源などにより直流電圧に変換して得られる電源電圧を、高周波電源電圧に変換する小規模の装置であり、図示はしないが、例えば１００Ｖの商用電源電圧を全波整流回路により、全波整流し且つ平滑回路により平滑にして２４Ｖの直流電圧（自動車のバッテリ電圧に相当）を得、この直流電圧をインバータ回路により高周波（例えば５０ｋＨｚ）の電圧に変換し、これをフェライトコアを用いた昇圧用トランスにより昇圧して例えば２０００Ｖの高周波電源電圧を発生させるようになっている。尚、一本の放電管２には、約１５ｍＡの電流が流れる。   A high frequency power supply device 9 for applying a high frequency power supply voltage is electrically connected between the pair of outer peripheral electrodes 5 and 5. The high frequency power supply device 9 converts a power supply voltage obtained by converting a vehicle power supply voltage (eg, DC 12V, 24V, 100V) or a commercial power supply voltage (eg, AC 100V, 200V) into a DC voltage using a switching power supply. Although not shown, for example, a 100 V commercial power supply voltage is full-wave rectified by a full-wave rectifier circuit and smoothed by a smoothing circuit, and a DC voltage of 24 V (vehicle battery voltage). The DC voltage is converted into a high frequency (for example, 50 kHz) voltage by an inverter circuit, and this voltage is boosted by a step-up transformer using a ferrite core to generate a high frequency power supply voltage of, for example, 2000V. ing. Note that a current of about 15 mA flows through one discharge tube 2.

ここで、本実施形態の外部電極型蛍光ランプ１を最適に発光させるため、本発明者らは放電の実験を行った。実験の経緯を、図３（ａ）乃至（ｅ）を参照して説明する。
実験では、直径８ｍｍ、全長５２０ｍｍの放電管２を二本用いたが、図３（ａ）乃至（ｅ）は、各一本の放電管２の内部の様子を概略的に示している。各放電管２内には、キセノンガス３の放電媒体が封入されている。又、実験では、外周電極５，５（図３（ａ）参照）と、外面電極６，６（図３（ｂ），（ｃ）参照）と、外周電極５，５と外面電極６，６とを組合せた電極（図３（ｄ），（ｅ）参照）との計３態様（３パターン）の電極を用いた。これら３態様の電極には、実験用高周波電源装置１０が電気的に接続されている。実験用高周波電源装置１０は、高周波電源装置９と略同様な構成であるが、出力電圧を可変することができる。今回は、３態様の電極に１５００Ｖ及び２０００Ｖの高周波電源電圧を印加させて実験を行った。 Here, in order to cause the external electrode fluorescent lamp 1 of the present embodiment to emit light optimally, the present inventors conducted a discharge experiment. The background of the experiment will be described with reference to FIGS.
In the experiment, two discharge tubes 2 having a diameter of 8 mm and a total length of 520 mm were used, but FIGS. 3A to 3E schematically show the inside of each single discharge tube 2. Each discharge tube 2 is filled with a discharge medium of xenon gas 3. In the experiment, the outer peripheral electrodes 5 and 5 (see FIG. 3A), the outer surface electrodes 6 and 6 (see FIGS. 3B and 3C), the outer peripheral electrodes 5 and 5 and the outer surface electrodes 6 and 6 are used. A total of three modes (three patterns) of electrodes were used (see FIGS. 3D and 3E). The experimental high frequency power supply device 10 is electrically connected to the electrodes of these three modes. The experimental high frequency power supply device 10 has substantially the same configuration as that of the high frequency power supply device 9, but the output voltage can be varied. This time, the experiment was performed by applying high frequency power supply voltages of 1500 V and 2000 V to the three electrodes.

一対の外周電極５，５は、夫々幅４０ｍｍの導電性テープからなり、一対の外面電極６，６は、夫々幅４ｍｍの導電性テープからなる。又、外周電極５，５と外面電極６，６とを組合せた電極の各外面電極６，６の他端部は、近接した位置にある対極をなす外周電極５，５から夫々１ｍｍ離してある。
尚、放電の様子を観察しやすくするために、蛍光体４、金属布テープ７，７、及びガラス布テープ８，８は、設けられていない。 The pair of outer peripheral electrodes 5 and 5 are each made of a conductive tape having a width of 40 mm, and the pair of outer surface electrodes 6 and 6 are each made of a conductive tape having a width of 4 mm. Further, the other end portions of the outer surface electrodes 6 and 6 of the electrodes in which the outer peripheral electrodes 5 and 5 and the outer surface electrodes 6 and 6 are combined are separated from the outer peripheral electrodes 5 and 5 forming a counter electrode by 1 mm, respectively. .
In order to make it easier to observe the state of discharge, the phosphor 4, the metal cloth tapes 7 and 7, and the glass cloth tapes 8 and 8 are not provided.

図３（ａ）は、放電管２に一対の外周電極５，５のみを取り付けて、この外周電極５，５間に電圧２０００Ｖを印加させたときの放電管２の内部の様子を示している。電圧２０００Ｖを印加させても放電は生じなかった。   FIG. 3A shows the inside of the discharge tube 2 when only a pair of outer peripheral electrodes 5 and 5 are attached to the discharge tube 2 and a voltage of 2000 V is applied between the outer peripheral electrodes 5 and 5. . No discharge occurred even when a voltage of 2000 V was applied.

図３（ｂ）は、放電管２に一対の外面電極６，６のみを取り付けて、この外面電極６，６間に電圧１５００Ｖを印加させたときの放電管２の内部の様子を示している。電圧１５００Ｖを印加させると、外面電極６，６同士を繋ぐように細い放電、即ち、「収縮性の局部放電Ｈ１」が数箇所に等間隔に発生した。   FIG. 3B shows the inside of the discharge tube 2 when only a pair of outer surface electrodes 6 and 6 are attached to the discharge tube 2 and a voltage of 1500 V is applied between the outer surface electrodes 6 and 6. . When a voltage of 1500 V was applied, a thin discharge connecting the outer surface electrodes 6, 6, that is, “shrinkable local discharge H <b> 1” was generated at equal intervals in several places.

図３（ｃ）は、図３（ｂ）と同様の構造であり、印加させる電圧を２０００Ｖにしたときの放電管２の内部の様子を示している。電圧２０００Ｖを印加させると、電圧１５００Ｖの印加の時よりも太い局部放電Ｈ２が生じた。   FIG. 3C has the same structure as FIG. 3B and shows the inside of the discharge tube 2 when the applied voltage is 2000V. When a voltage of 2000 V was applied, a thicker local discharge H2 was generated than when a voltage of 1500 V was applied.

図３（ｄ）は、放電管２に一対の外周電極５，５及び一対の外面電極６，６を取り付けて、この外周電極５，５間に電圧１５００Ｖを印加させたときの放電管２の内部の様子を示している。電圧１５００Ｖを印加させると、放電管２の中央付近では外面電極６のみの実験の時よりもさらに太い局部放電Ｈ３が数箇所に等間隔に発生した。又、放電管２の両端部側では、局部放電が一体となった「拡散放電Ｈ４，Ｈ４」が夫々生じた。   FIG. 3 (d) shows the discharge tube 2 when a pair of outer peripheral electrodes 5, 5 and a pair of outer surface electrodes 6, 6 are attached to the discharge tube 2 and a voltage of 1500 V is applied between the outer peripheral electrodes 5, 5. It shows the inside. When a voltage of 1500 V was applied, a thicker local discharge H3 near the center of the discharge tube 2 than at the time of the experiment using only the outer electrode 6 occurred at several locations at equal intervals. Further, “diffused discharges H4 and H4” in which local discharges are integrated are generated on both ends of the discharge tube 2, respectively.

図３（ｅ）は、図３（ｄ）と同様な構造であり、印加させる電圧を２０００Ｖにしたときの放電管２の内部の様子を示している。電圧２０００Ｖを印加させると、両端部に存じていた拡散放電Ｈ４，Ｈ４同士は繋がり、放電管２の軸方向に延びた一本の放電、即ち「収縮放電Ｈ５」が生じた。この収縮放電Ｈ５は、局部放電Ｈ１，Ｈ２，Ｈ３及び拡散放電Ｈ４よりも強い光を発していた。   FIG. 3 (e) has the same structure as FIG. 3 (d), and shows the inside of the discharge tube 2 when the applied voltage is 2000V. When a voltage of 2000 V was applied, diffusion discharges H4 and H4 existing at both ends were connected to each other, and one discharge extending in the axial direction of the discharge tube 2, that is, “contracted discharge H5” was generated. This contracted discharge H5 emitted stronger light than the local discharges H1, H2, H3 and the diffusion discharge H4.

上記図３に示す実験の結果に基づいて図１及び図２に示す外部電極型蛍光ランプ１が構成されたものである。即ち、外部電極型蛍光ランプ１は、基本的には図３（ｅ）に示す構成を有し、これに蛍光体４、金属布テープ７，７及びガラス布テープ８，８を設け、そして、高周波電源装置９により５０ｋＨｚ，２０００Ｖの高周波電源電圧を印加させるようにした。この場合、外部電極型蛍光ランプ１の一本で１０Ｗの明るさが得られる。従って、この外部電極型蛍光ランプ１を複数本並設すれば、複数倍のＷ数の明るさが得られる。   The external electrode fluorescent lamp 1 shown in FIGS. 1 and 2 is configured based on the result of the experiment shown in FIG. That is, the external electrode fluorescent lamp 1 basically has the configuration shown in FIG. 3 (e), provided with the phosphor 4, the metal cloth tapes 7 and 7 and the glass cloth tapes 8 and 8, and A high frequency power supply voltage of 50 kHz and 2000 V was applied by the high frequency power supply device 9. In this case, a brightness of 10 W can be obtained with one external electrode fluorescent lamp 1. Therefore, if a plurality of the external electrode fluorescent lamps 1 are arranged side by side, the brightness of a multiple of W can be obtained.

上記した実施形態においては、次のような効果を得ることができる。
外部電極型蛍光ランプ１に用いられる電極を、放電管２の外周面部の両端部に設けられた一対の外周電極５，５と、放電管２の外周面部に互いに対応するように設けられた一対の外面電極６，６とから構成したので、内部に水銀以外の放電媒体、例えばキセノンガス３が封入された放電管２に、それほど高くない２０００Ｖの高周波電源電圧を印加しても、外周電極５，５と外面電極６，６との相乗作用によって、強い光を発する放電を生じさせることができた。そして、このときの電圧は、大型のインバータ回路及び電圧を１万Ｖ余りに昇圧する昇圧トランスを備えた大規模な高周波電源装置によらなくても、小規模な高周波電源装置９によって得ることができる高周波電源電圧に変換するだけでよいので、安価にすることができる。 In the embodiment described above, the following effects can be obtained.
The electrodes used in the external electrode type fluorescent lamp 1 are a pair of outer peripheral electrodes 5 and 5 provided at both ends of the outer peripheral surface portion of the discharge tube 2 and a pair provided so as to correspond to the outer peripheral surface portion of the discharge tube 2. Therefore, even if a not so high 2000 V high frequency power supply voltage is applied to the discharge tube 2 in which a discharge medium other than mercury, for example, xenon gas 3 is sealed, the outer peripheral electrode 5 is formed. , 5 and the outer surface electrodes 6 and 6 can generate a discharge that emits strong light. The voltage at this time can be obtained by the small-scale high-frequency power supply device 9 without using a large-scale inverter circuit and a large-scale high-frequency power supply device that includes a step-up transformer that boosts the voltage by 10,000 V or more. Since it only needs to be converted into a high-frequency power supply voltage, the cost can be reduced.

この場合、これらの電極５，６に印加する高周波電源電圧は、放電媒体として水銀を用いた外部電極型蛍光ランプと同程度の電圧である。尚、電極５，６の形状次第で高周波電源電圧が１５００Ｖでも放電させることができる。
又、放電管２を、鉛を含まない硬質ガラスで形成したので、環境への負荷をさらに低減できる。 In this case, the high frequency power supply voltage applied to these electrodes 5 and 6 is the same level as that of an external electrode type fluorescent lamp using mercury as a discharge medium. Depending on the shape of the electrodes 5 and 6, it can be discharged even when the high frequency power supply voltage is 1500V.
Moreover, since the discharge tube 2 is made of hard glass not containing lead, the burden on the environment can be further reduced.

金属布テープ７，７を外周電極６，６の外周面部に設けなかった場合、外周電極５，５間に電圧を印加すると、外周電極５が放電管２に接している部分で加熱が生じ、この部分に電子が集中し、この部分が局部的に発熱し、この発熱でガラス製の放電管２にピンホールが発生する虞がある。従って、金属布テープ７，７を外周電極６，６の外周面部に設けることにより、外周電極５及び外面電極６が放電管２に接している部分で熱が生じても、熱は金属布テープ７，７を伝って外部へ放散され、これにより、電子が局部的に集中せず、放電管２の加熱を抑制することができる。
ガラス布テープ８，８を金属布テープ７，７の外周面部に設けることにより、利用者等が誤って金属布テープ７，７に触れて感電してしまうことを防ぐことができる。 When the metal cloth tapes 7 and 7 are not provided on the outer peripheral surface portions of the outer peripheral electrodes 6 and 6, when a voltage is applied between the outer peripheral electrodes 5 and 5, heating occurs at a portion where the outer peripheral electrode 5 is in contact with the discharge tube 2, Electrons concentrate on this part, and this part generates heat locally, which may cause pinholes in the glass discharge tube 2. Therefore, by providing the metal cloth tapes 7 and 7 on the outer peripheral surface portions of the outer peripheral electrodes 6 and 6, even if heat is generated at the portion where the outer peripheral electrode 5 and the outer electrode 6 are in contact with the discharge tube 2, 7 and 7 are diffused to the outside, whereby electrons are not concentrated locally and heating of the discharge tube 2 can be suppressed.
By providing the glass cloth tapes 8 and 8 on the outer peripheral surface portion of the metal cloth tapes 7 and 7, it is possible to prevent a user or the like from touching the metal cloth tapes 7 and 7 and receiving an electric shock.

尚、放電媒体にキセノンガス３を適用して実験を行ったが、キセノンガス３以外の希ガス、即ちヘリウムガス、ネオンガス、アルゴンガス、クリプトンガス、ラドンガスを用いても同様の効果が得られ、放電媒体として使用するガスを適宜変更できる。さらに、これらの希ガスを二以上組合わせても同様の効果が得られ、放電媒体として使用するガスを適宜組合わせることができる。さらに、これらのガスは、周囲温度の影響を受け難いので、冷凍車の蛍光灯等、低温環境でも使用できる。   In addition, although the experiment was performed by applying the xenon gas 3 to the discharge medium, the same effect can be obtained by using a rare gas other than the xenon gas 3, that is, helium gas, neon gas, argon gas, krypton gas, radon gas, The gas used as the discharge medium can be changed as appropriate. Further, even when two or more of these rare gases are combined, the same effect can be obtained, and the gases used as the discharge medium can be combined appropriately. Furthermore, since these gases are not easily affected by the ambient temperature, they can be used in a low-temperature environment such as a fluorescent lamp of a refrigerator car.

本発明は上記し且つ図面に示す実施形態に限定されず、次のような変形、拡張が可能である。
本実施形態の一対の外面電極は、夫々放電管の軸方向に沿って延びる形状であったが、放電管の外周面部に、放電管の軸方向を中心にして螺旋状に配置させても良い。この場合、互いの外面電極同士が接触しないように平行に配置する必要がある。
又、上記した構成部品の材料や寸法、数値等についても、適宜変更することができる。 The present invention is not limited to the embodiment described above and shown in the drawings, and the following modifications and expansions are possible.
The pair of outer surface electrodes of the present embodiment has a shape extending along the axial direction of the discharge tube, but may be arranged in a spiral shape around the axial direction of the discharge tube on the outer peripheral surface portion of the discharge tube. . In this case, it is necessary to arrange in parallel so that the outer surface electrodes do not contact each other.
The materials, dimensions, numerical values, and the like of the above-described components can be changed as appropriate.

本発明の一実施形態の外部放電型蛍光ランプの断面図Sectional drawing of the external discharge fluorescent lamp of one Embodiment of this invention （ａ）は図１中のＡ−Ａ線に沿って切断した断面図、（ｂ）は図１中のＢ−Ｂ線に沿って切断した断面図(A) is sectional drawing cut | disconnected along the AA line in FIG. 1, (b) is sectional drawing cut | disconnected along the BB line in FIG. （ａ）は外周電極に高周波電源電圧２０００Ｖを印加した時の放電管内の説明図、（ｂ）は外面電極に高周波電源電圧１５００Ｖを印加した時の放電管内の説明図、（ｃ）は外面電極に高周波電源電圧２０００Ｖを印加した時の放電管内の説明図、（ｄ）は外周電極及び外面電極に高周波電源電圧１５００Ｖを印加した時の放電管内の説明図、（ｅ）は外周電極及び外面電極に高周波電源電圧２０００Ｖを印加した時の放電管内の説明図(A) is an explanatory diagram in the discharge tube when a high frequency power supply voltage of 2000 V is applied to the outer peripheral electrode, (b) is an explanatory diagram in the discharge tube when a high frequency power supply voltage of 1500 V is applied to the outer electrode, and (c) is an outer electrode. FIG. 7D is an explanatory diagram of the inside of the discharge tube when a high frequency power supply voltage of 2000 V is applied thereto, FIG. 9D is an explanatory diagram of the inside of the discharge tube when a high frequency power source voltage of 1500 V is applied to the outer peripheral electrode and the outer electrode, and FIG. Explanatory drawing in the discharge tube when high frequency power supply voltage 2000V is applied to

符号の説明Explanation of symbols

図面中、１は外部放電型蛍光ランプ、２は放電管、３はキセノンガス（放電媒体）、４は蛍光体、５は外周電極、６は外面電極、７は金属布テープ（放散片部材）、８はガラス布テープ（絶縁部材）、９は高周波電源装置を示す。   In the drawings, 1 is an external discharge fluorescent lamp, 2 is a discharge tube, 3 is xenon gas (discharge medium), 4 is a phosphor, 5 is an outer peripheral electrode, 6 is an outer electrode, and 7 is a metal cloth tape (radiation piece member). , 8 is a glass cloth tape (insulating member), and 9 is a high-frequency power supply device.

Claims (3)

内部に水銀以外の放電媒体が封入された放電管と、
この放電管の内周面部に設けられた蛍光体と、
前記放電管の外周面部における軸方向の両端部に設けられた一対の外周電極と、
前記放電管の外周面部に互いに対応するように設けられ、軸方向に延びて、各一端部が前記一対の外周電極の互いに異なる外周電極に電気的に接続された一対の外面電極とを具備していることを特徴とする外部電極型蛍光ランプ。 A discharge tube in which a discharge medium other than mercury is enclosed;
A phosphor provided on the inner peripheral surface of the discharge tube;
A pair of outer peripheral electrodes provided at both axial ends of the outer peripheral surface of the discharge tube;
A pair of outer surface electrodes provided to correspond to each other on the outer peripheral surface portion of the discharge tube, extending in the axial direction, and having one end portion electrically connected to different outer peripheral electrodes of the pair of outer peripheral electrodes. An external electrode fluorescent lamp characterized by comprising: 外周電極の外周面部に、金属布テープからなる放散片部材が設けられていることを特徴とする請求項１に記載の外部電極型蛍光ランプ。   2. The external electrode fluorescent lamp according to claim 1, wherein a dissipating piece member made of a metal cloth tape is provided on an outer peripheral surface portion of the outer peripheral electrode. 外周電極間に高周波電源電圧を印加する高周波電源装置を備えたことを特徴とする請求項１又は２に記載の外部電極型蛍光ランプ。   3. The external electrode fluorescent lamp according to claim 1, further comprising a high frequency power supply device that applies a high frequency power supply voltage between the outer peripheral electrodes.
JP2006342813A 2006-12-20 2006-12-20 External electrode type fluorescent lamp Pending JP2008153173A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006342813A JP2008153173A (en) 2006-12-20 2006-12-20 External electrode type fluorescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006342813A JP2008153173A (en) 2006-12-20 2006-12-20 External electrode type fluorescent lamp

Publications (1)

Publication Number Publication Date
JP2008153173A true JP2008153173A (en) 2008-07-03

Family

ID=39655118

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006342813A Pending JP2008153173A (en) 2006-12-20 2006-12-20 External electrode type fluorescent lamp

Country Status (1)

Country Link
JP (1) JP2008153173A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9096139B2 (en) 2009-12-22 2015-08-04 Panasonic Intellectual Property Management Co., Ltd. Power feeding control apparatus
JP2018166028A (en) * 2017-03-28 2018-10-25 株式会社オーク製作所 Discharge lamp, ozone generating device, and ozone generating method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01309250A (en) * 1988-06-06 1989-12-13 Mitsubishi Electric Corp Discharge lamp
JPH0541202A (en) * 1991-02-01 1993-02-19 Hughes Aircraft Co High-frequency flurescent system
JP2001076682A (en) * 1999-09-02 2001-03-23 Ushio Inc Light source device
JP2002216704A (en) * 2000-11-16 2002-08-02 Nec Lighting Ltd Rare gas discharge lamp
JP2006216327A (en) * 2005-02-02 2006-08-17 Ushio Inc Rare gas fluorescent lamp
JP2007073494A (en) * 2005-08-08 2007-03-22 Ushio Inc External electrode discharge lamp and its lamp apparatus
JP2007141766A (en) * 2005-11-22 2007-06-07 U-Tec Kk External electrode discharge lamp

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01309250A (en) * 1988-06-06 1989-12-13 Mitsubishi Electric Corp Discharge lamp
JPH0541202A (en) * 1991-02-01 1993-02-19 Hughes Aircraft Co High-frequency flurescent system
JP2001076682A (en) * 1999-09-02 2001-03-23 Ushio Inc Light source device
JP2002216704A (en) * 2000-11-16 2002-08-02 Nec Lighting Ltd Rare gas discharge lamp
JP2006216327A (en) * 2005-02-02 2006-08-17 Ushio Inc Rare gas fluorescent lamp
JP2007073494A (en) * 2005-08-08 2007-03-22 Ushio Inc External electrode discharge lamp and its lamp apparatus
JP2007141766A (en) * 2005-11-22 2007-06-07 U-Tec Kk External electrode discharge lamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9096139B2 (en) 2009-12-22 2015-08-04 Panasonic Intellectual Property Management Co., Ltd. Power feeding control apparatus
JP2018166028A (en) * 2017-03-28 2018-10-25 株式会社オーク製作所 Discharge lamp, ozone generating device, and ozone generating method

Similar Documents

Publication Publication Date Title
US10141179B2 (en) Fast start RF induction lamp with metallic structure
JP3826158B2 (en) Electrodeless discharge lamp
US8901842B2 (en) RF induction lamp with ferrite isolation system
US5952792A (en) Compact electrodeless fluorescent A-line lamp
US8975829B2 (en) RF induction lamp with isolation system for air-core power coupler
US10418233B2 (en) Burst-mode for low power operation of RF fluorescent lamps
JPH0439896A (en) Rare gas discharge fluorescent lamp device
US20120218526A1 (en) High pressure discharge lamp with start-up assist member, lamp unit, lamp system, and projector
JP7155481B2 (en) Discharge lamp and ozone generation method
JP6524477B2 (en) Gas discharge light emitting device and its driving circuit
JP2008153173A (en) External electrode type fluorescent lamp
JP5379386B2 (en) UV irradiation equipment
JP4146666B2 (en) Dielectric barrier discharge lamp and light irradiation device
JPS62281256A (en) Rare gas discharge lamp device
JP2021051937A (en) Barrier discharge lamp and UV irradiation unit
JPH0684506A (en) External electrode discharge lamp and manufacture thereof
JP4573027B2 (en) Excimer lamp lighting device
TWM399943U (en) Electrodeless lamp capable of generating infrared light
JP7139808B2 (en) barrier discharge lamp
JP2002367792A (en) Discharge lamp lighting device and equipment
JPH11283777A (en) Discharge lamp lighting device, discharge lamp device and apparatus
JP2009301785A (en) Lighting device and lighting method
JP5640966B2 (en) Excimer lamp
TWM418381U (en) Electrode-less Illumination lamp
JP2001273873A (en) Discharge lamp lighting device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20090915

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110801

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110809

A02 Decision of refusal

Effective date: 20111206

Free format text: JAPANESE INTERMEDIATE CODE: A02