JP2529216Y2 - Electrodeless discharge lamp device - Google Patents
Electrodeless discharge lamp deviceInfo
- Publication number
- JP2529216Y2 JP2529216Y2 JP3148691U JP3148691U JP2529216Y2 JP 2529216 Y2 JP2529216 Y2 JP 2529216Y2 JP 3148691 U JP3148691 U JP 3148691U JP 3148691 U JP3148691 U JP 3148691U JP 2529216 Y2 JP2529216 Y2 JP 2529216Y2
- Authority
- JP
- Japan
- Prior art keywords
- induction coil
- discharge lamp
- lamp device
- discharge
- lamp
- 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.)
- Expired - Fee Related
Links
Landscapes
- Discharge Lamps And Accessories Thereof (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、ランプ内部に電極を持
たず、外部からの高周波電磁界によってランプ内部の放
電気体を放電、発光させる無電極放電灯装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrodeless discharge lamp device which has no electrodes inside a lamp and discharges and emits a discharge gas inside the lamp by an external high-frequency electromagnetic field.
【０００２】[0002]
【従来の技術】従来より、アーク放電により水銀原子を
励起して紫外線を放射し、この紫外線を蛍光体層に照射
することにより可視光を得るようにした蛍光ランプが提
供されているが、この種の螢光ランプは、比較的短寿命
で低効率である。2. Description of the Related Art Conventionally, there has been provided a fluorescent lamp which emits ultraviolet rays by exciting mercury atoms by arc discharge and irradiates the ultraviolet rays to a phosphor layer to obtain visible light. Certain fluorescent lamps have a relatively short life and low efficiency.
【０００３】この問題を解決するために、１０年程前か
ら長寿命化、高効率化を図った無電極放電ランプが提案
されており、例えば、特開昭５７−７８７６６号公報に
開示されている。このランプは、放電気体を封入した放
電容器に近接して配置した誘導コイルに高周波を通電
し、発生する誘導電磁界で放電容器内の放電気体を放
電、発光させるものである。[0003] In order to solve this problem, an electrodeless discharge lamp with a long life and high efficiency has been proposed about 10 years ago, for example, as disclosed in Japanese Patent Application Laid-Open No. 57-78766. I have. In this lamp, a high frequency is applied to an induction coil disposed in proximity to a discharge vessel in which the discharge gas is sealed, and the discharge gas in the discharge vessel is discharged and emitted by an induced electromagnetic field.
【０００４】また、特開昭６１−７１９５７号公報等に
開示された無電極放電ランプによれば、図３に示すよう
に、ランプ１は略球状のバルブ２の外周にコイル３を巻
いて構成されており、高周波発生回路４でコイル３に電
力を供給する。このように構成されたランプ１の発光表
面積は小さく、即ち、小型で高輝度の光源が可能とな
り、長寿命、高効率の特長も兼ね備え、光学設計も比較
的自由な照明装置を提供できる。Further, according to the electrodeless discharge lamp disclosed in Japanese Patent Application Laid-Open No. 61-71957, the lamp 1 is constructed by winding a coil 3 around a substantially spherical bulb 2 as shown in FIG. The high frequency generator 4 supplies power to the coil 3. The light-emitting surface area of the lamp 1 configured as described above is small, that is, a small-sized and high-brightness light source can be provided, and a lighting device having features of long life and high efficiency, and having a relatively free optical design can be provided.
【０００５】図４は、上述の如き無電極放電ランプを用
いた照明装置の一例を示すもので、図中、２は電球状の
バルブ、３は誘導コイルであって、ランプ１との結合度
を高め発光効率を上げるため、バルブ２の中央近傍の外
周に巻かれている。５は導電体で構成された装置本体
で、ランプ１や装置本体５に内蔵された高周波発生回路
（図示せず）から発生する放射ノイズを除去する。６は
導電性メッシュで構成された電磁シールド手段で、ラン
プ１からの照射光を透過すると共に、照射面からのノイ
ズ漏洩を防ぐ。FIG. 4 shows an example of an illuminating device using the above-described electrodeless discharge lamp. In the drawing, reference numeral 2 denotes a bulb-shaped bulb, 3 denotes an induction coil, and a coupling degree with the lamp 1. In order to increase the light emission efficiency and to increase the luminous efficiency. Reference numeral 5 denotes an apparatus main body composed of a conductor, which removes radiation noise generated from the lamp 1 and a high-frequency generation circuit (not shown) built in the apparatus main body 5. Numeral 6 denotes an electromagnetic shielding means composed of a conductive mesh, which transmits the irradiation light from the lamp 1 and prevents noise from leaking from the irradiation surface.
【０００６】[0006]
【考案が解決しようとする課題】ところで、上述の如き
無電極放電灯装置においては、特開平２−１７０３４１
号公報に開示されているように、電磁シールド手段６と
誘導コイル３との間隔を少なくとも誘導コイル３の周回
半径以上とする必要があり、装置の小型化を図るため、
電磁シールド手段６を誘導コイル３に近接して設ける
と、誘導コイル３の実効Ｑが小さくなって効率が低下す
るという問題があった。The above-described electrodeless discharge lamp device is disclosed in Japanese Patent Laid-Open No. 2-170341.
As disclosed in Japanese Unexamined Patent Publication, the interval between the electromagnetic shielding means 6 and the induction coil 3 needs to be at least equal to or greater than the orbital radius of the induction coil 3.
If the electromagnetic shielding means 6 is provided near the induction coil 3, there is a problem that the effective Q of the induction coil 3 becomes small and the efficiency is reduced.
【０００７】本考案は、上記問題点に鑑みなされたもの
で、その目的とするところは、ランプの効率を損なうこ
となく装置の小型化が図れ、しかもノイズ漏洩のない無
電極放電灯装置を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide an electrodeless discharge lamp device which can reduce the size of the device without impairing the efficiency of the lamp and which does not leak noise. Is to do.
【０００８】[0008]
【課題を解決するための手段】上記課題を解決するため
本考案は、放電気体を封入した透光性の放電容器に近接
して誘導コイルを周回し、該誘導コイルに高周波電流を
通電することによって発生した誘導電磁界により前記放
電気体を放電、発光させて成る無電極放電灯装置におい
て、前記放電容器及び誘導コイルを導電性の電磁シール
ド手段で被うとともに、前記誘導コイルの近傍で前記電
磁シールド手段のシールド効果を小さくしたことを特徴
とする。In order to solve the above-mentioned problems, the present invention is to circumvent an induction coil near a translucent discharge vessel filled with a discharge gas and to apply a high-frequency current to the induction coil. In the electrodeless discharge lamp device which discharges and emits the discharge gas by the induction electromagnetic field generated by the electromagnetic field, the discharge vessel and the induction coil are covered with a conductive electromagnetic shield means, and the electromagnetic wave is provided near the induction coil. The shield effect of the shield means is reduced.
【０００９】[0009]
【実施例１】図１は本考案の一実施例を示すもので、図
中、１は無電極放電ランプで、放電気体を封入した透光
性の放電容器２と、放電容器２の外周に周回した誘導コ
イル３とより成る。５は高周波発生回路（図示せず）を
内蔵した装置本体である。６は導電性メッシュで構成さ
れた電磁シールド手段であって、形状はランプ１を被う
略半球状で、メッシュのピッチは誘導コイル３の近傍で
粗く、他の部分では蜜に構成されている。Embodiment 1 FIG. 1 shows an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes an electrodeless discharge lamp, in which a light-transmissive discharge vessel 2 containing a discharge gas and an outer periphery of the discharge vessel 2 are provided. And an orbiting induction coil 3. Reference numeral 5 denotes an apparatus main body incorporating a high-frequency generation circuit (not shown). Numeral 6 denotes an electromagnetic shielding means composed of a conductive mesh, which is substantially hemispherical in shape covering the lamp 1, and the pitch of the mesh is coarse near the induction coil 3 and fine in other parts. .
【００１０】このように構成することにより、電磁シー
ルド手段６を誘導コイル３に近接して設けても、誘導コ
イル３の実効Ｑが小さくならないため、効率が低下せ
ず、しかも照射面からのノイズ漏洩を防ぐことができ
る。また、電磁シールド手段６のメッシュピッチが誘導
コイル３の近傍で粗いので、点灯状態において、放電容
器２の最も明るい部分である誘導コイル３周辺の光を効
率良く外部に取り出すことができる。With this configuration, even if the electromagnetic shielding means 6 is provided close to the induction coil 3, the effective Q of the induction coil 3 does not decrease, so that the efficiency does not decrease and the noise from the irradiation surface is reduced. Leakage can be prevented. Further, since the mesh pitch of the electromagnetic shielding means 6 is coarse in the vicinity of the induction coil 3, in the lighting state, light around the induction coil 3, which is the brightest part of the discharge vessel 2, can be efficiently extracted to the outside.
【００１１】[0011]
【実施例２】図２は本考案の異なる実施例を示すもの
で、前記実施例と異なる点は、前記電磁シールド手段６
を略半球状のガラスグローブ７とその内面に被着した導
電性を有する金属酸化物の薄い膜８で構成するととも
に、金属酸化膜８の厚さを誘導コイル３の近傍で薄く、
他の部分では厚く構成したことで、他の構成は前記実施
例と同様であるので、同等構成に同一符号を付すことに
より説明を省略する。Embodiment 2 FIG. 2 shows a different embodiment of the present invention.
Is composed of a substantially hemispherical glass globe 7 and a thin film 8 of a conductive metal oxide adhered to the inner surface thereof, and the thickness of the metal oxide film 8 is thin near the induction coil 3.
The other parts are thicker, and the other parts are the same as those of the above-mentioned embodiment.
【００１２】このように構成することにより、前記実施
例の効果に加え、前記導電性メッシュよりも細かい設計
ができるとともに、外観の良い無電極放電灯装置を提供
できる。With this configuration, in addition to the effects of the above embodiment, it is possible to provide a finer design than the conductive mesh and to provide an electrodeless discharge lamp device with a good appearance.
【００１３】[0013]
【考案の効果】本考案は上記のように、放電容器及び誘
導コイルを導電性の電磁シールド手段で被うとともに、
誘導コイルの近傍で電磁シールド手段のシールド効果を
小さくしたことにより、ランプの効率を損なうことなく
装置の小型化が図れ、しかもノイズ漏洩のない無電極放
電灯装置を提供できる。According to the present invention, as described above, the discharge vessel and the induction coil are covered with the conductive electromagnetic shielding means.
By reducing the shielding effect of the electromagnetic shielding means in the vicinity of the induction coil, it is possible to reduce the size of the device without impairing the efficiency of the lamp, and to provide an electrodeless discharge lamp device free of noise leakage.
【図１】本考案の一実施例を示す簡略正面図である。FIG. 1 is a simplified front view showing an embodiment of the present invention.
【図２】本考案の異なる実施例を示す簡略断面図であ
る。FIG. 2 is a simplified sectional view showing another embodiment of the present invention.
【図３】従来例を示す簡略斜視図である。FIG. 3 is a simplified perspective view showing a conventional example.
【図４】異なる従来例を示す簡略正面図である。FIG. 4 is a simplified front view showing a different conventional example.
１ 無電極放電ランプ ２ 放電容器 ３ 誘導コイル ４ 高周波発生回路 ５ 装置本体 ６ 電磁シールド手段 ７ ガラスグローブ ８ 金属酸化膜 REFERENCE SIGNS LIST 1 electrodeless discharge lamp 2 discharge vessel 3 induction coil 4 high-frequency generation circuit 5 device body 6 electromagnetic shielding means 7 glass globe 8 metal oxide film
───────────────────────────────────────────────────── フロントページの続き (72)考案者 平松 宏司 大阪府門真市大字門真1048番地松下電工 株式会社内 (56)参考文献 特開 平２−170341（ＪＰ，Ａ) 実開 昭54−84186（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hiroshi Hiramatsu 1048 Kazuma Kadoma, Kadoma City, Osaka Pref. Matsushita Electric Works, Ltd. JP, U)
Claims (1)
近接して誘導コイルを周回し、該誘導コイルに高周波電
流を通電することによって発生した誘導電磁界により前
記放電気体を放電、発光させて成る無電極放電灯装置に
おいて、前記放電容器及び誘導コイルを導電性の電磁シ
ールド手段で被うとともに、前記誘導コイルの近傍で前
記電磁シールド手段のシールド効果を小さくしたことを
特徴とする無電極放電灯装置。1. A discharge gas is discharged and illuminated by an induction electromagnetic field generated by energizing a high-frequency current around an induction coil in proximity to a translucent discharge vessel filled with the discharge gas. In the electrodeless discharge lamp device, the discharge vessel and the induction coil are covered with a conductive electromagnetic shielding means, and a shielding effect of the electromagnetic shielding means is reduced near the induction coil. Electrode discharge lamp device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3148691U JP2529216Y2 (en) | 1991-05-08 | 1991-05-08 | Electrodeless discharge lamp device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3148691U JP2529216Y2 (en) | 1991-05-08 | 1991-05-08 | Electrodeless discharge lamp device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0515312U JPH0515312U (en) | 1993-02-26 |
| JP2529216Y2 true JP2529216Y2 (en) | 1997-03-19 |
Family
ID=12332603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3148691U Expired - Fee Related JP2529216Y2 (en) | 1991-05-08 | 1991-05-08 | Electrodeless discharge lamp device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2529216Y2 (en) |
-
1991
- 1991-05-08 JP JP3148691U patent/JP2529216Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0515312U (en) | 1993-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0541201A (en) | High-frequency excitation fluorescent light-emitting device | |
| JPS61185857A (en) | Electrodeless discharge lamp | |
| JP2529216Y2 (en) | Electrodeless discharge lamp device | |
| JP3171622B2 (en) | Fluorescent discharge lamp | |
| JPS6196649A (en) | Electrodeless electric-discharge lamp | |
| JP3376818B2 (en) | Electrodeless fluorescent lamp | |
| JP3456098B2 (en) | Electrodeless lamp | |
| JP3470449B2 (en) | Cold cathode discharge lamp device, lighting device using the same, backlight, liquid crystal display device | |
| JPH0793127B2 (en) | Electrodeless discharge lamp | |
| JPH0973884A (en) | Electrodeless fluorescent lamp | |
| JPS60136159A (en) | Electrodeless electric-discharge lamp | |
| JPH08287876A (en) | Electrodeless fluorescent lamp | |
| JPH05225960A (en) | Electrodeless low pressure rare gas type fluorescent lamp | |
| JPH0515311U (en) | Electrodeless discharge lamp device | |
| JPH09320539A (en) | Electrodeless fluorescent lamp | |
| JPS63313462A (en) | Electrodeless discharge lamp | |
| JPH0973880A (en) | Conductive fragment-prevention cover and electrodeless fluorescent lamp | |
| JPH10312777A (en) | Electrodeless fluorescent lamp apparatus | |
| JPH0684507A (en) | Solenoid magnetic field type discharge lamp and lighting system using this lamp | |
| JPS593494Y2 (en) | discharge lamp | |
| JPH0569851U (en) | Electrodeless discharge lamp | |
| JP2000223079A (en) | Fluorescent lamp and lighting system | |
| JPS62172657A (en) | Electrodeless discharge lamp device | |
| JPH10134766A (en) | Discharge lamp, lighting system, and display device | |
| JPH04357663A (en) | Electrodeless discharge lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |