JPH0515312U - Electrodeless discharge lamp device - Google Patents

Electrodeless discharge lamp device

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Publication number
JPH0515312U
JPH0515312U JP3148691U JP3148691U JPH0515312U JP H0515312 U JPH0515312 U JP H0515312U JP 3148691 U JP3148691 U JP 3148691U JP 3148691 U JP3148691 U JP 3148691U JP H0515312 U JPH0515312 U JP H0515312U
Authority
JP
Japan
Prior art keywords
induction coil
discharge
lamp
discharge lamp
electromagnetic shield
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.)
Granted
Application number
JP3148691U
Other languages
Japanese (ja)
Other versions
JP2529216Y2 (en
Inventor
茂樹 松尾
雅弘 東川
雅樹 四宮
宏司 平松
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP3148691U priority Critical patent/JP2529216Y2/en
Publication of JPH0515312U publication Critical patent/JPH0515312U/en
Application granted granted Critical
Publication of JP2529216Y2 publication Critical patent/JP2529216Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

(57)【要約】 【目的】 ランプの効率を損なうことなく装置を小型化
し、照射面からのノイズ漏洩もなくす。 【構成】 無電極放電ランプ1は、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。電磁シールド手段6は導電性メ
ッシュで構成され、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。
(57) [Abstract] [Purpose] To reduce the size of the device without sacrificing the efficiency of the lamp and to prevent noise leakage from the irradiation surface. [Structure] The electrodeless discharge lamp 1 is composed of a translucent discharge vessel 2 in which a discharge gas is sealed, and an induction coil 3 which is wound around the outer circumference of the discharge vessel 2. The electromagnetic shield means 6 is made of a conductive mesh and has a substantially hemispherical shape that covers the lamp 1.
The mesh pitch is coarse in the vicinity of the induction coil 3 and is thin in the other portions.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

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。 The present invention relates to an electrodeless discharge lamp device which does not have an electrode inside the lamp and discharges and discharges discharge gas inside the lamp by a high frequency electromagnetic field from the outside.

【0002】[0002]

【従来の技術】[Prior Art]

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。 Conventionally, fluorescent lamps have been provided in which mercury atoms are excited by arc discharge to emit ultraviolet rays, and the ultraviolet rays are applied to the phosphor layer to obtain visible light, but this type of fluorescent lamp. Has 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。In order to solve this problem, an electrodeless discharge lamp having a long life and high efficiency has been proposed for about 10 years, and is disclosed in, for example, Japanese Patent Application Laid-Open No. 57-78766. There is. In this lamp, a high-frequency current is applied to an induction coil arranged in the vicinity of a discharge vessel in which a discharge gas is sealed, and the generated induction gas causes the discharge gas in the discharge vessel to discharge and emit light.

【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 Laid-Open No. 61-71957, the lamp 1 is constructed by winding a coil 3 around the outer circumference of a substantially spherical bulb 2, as shown in FIG. The high frequency generating circuit 4 supplies power to the coil 3. The light emitting surface area of the lamp 1 configured in this way is small, that is, a small-sized and high-intensity light source is possible, and it also has the features of long life and high efficiency, and provides an illumination device with relatively free optical design. it can.

【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 a lighting device using the electrodeless discharge lamp as described above. In the figure, 2 is a bulb-shaped bulb, 3 is an induction coil, and the degree of coupling with the lamp 1 is high. It is wrapped around the outer periphery of the bulb 2 in the vicinity of its center in order to improve the luminous efficiency. Reference numeral 5 denotes an apparatus main body made of a conductor, which removes radiation noise generated from a high frequency generation circuit (not shown) built in the lamp 1 or the apparatus main body 5. Reference numeral 6 denotes an electromagnetic shield means composed of a conductive mesh, which transmits the irradiation light from the lamp 1 and prevents noise leakage from the irradiation surface.

【0006】[0006]

【考案が解決しようとする課題】[Problems to be solved by the device]

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。 By the way, in the above-mentioned electrodeless discharge lamp device, as disclosed in Japanese Patent Laid-Open No. 2-170341, the distance between the electromagnetic shield means 6 and the induction coil 3 is at least not less than the circumference radius of the induction coil 3. Therefore, if the electromagnetic shield means 6 is provided close to the induction coil 3 in order to reduce the size of the device, there is a problem that the effective Q of the induction coil 3 is reduced 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。The present invention has been made in view of the above problems, and an object of the present invention is to provide an electrodeless discharge lamp device capable of downsizing the device without impairing the efficiency of the lamp and having no noise leakage. To provide.

【0008】[0008]

【課題を解決するための手段】[Means for Solving the Problems]

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 proposes the above-mentioned discharge by an induction electromagnetic field generated by encircling an induction coil in the vicinity of a translucent discharge vessel in which a discharge gas is sealed and passing a high frequency current through the induction coil. In an electrodeless discharge lamp device that discharges and emits gas, the discharge container and the induction coil are covered with a conductive electromagnetic shield means, and the shielding effect of the electromagnetic shield means is reduced near the induction coil. It is characterized by

【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 the drawing, reference numeral 1 is an electrodeless discharge lamp, which is a translucent discharge vessel 2 in which a discharge gas is sealed and an outer circumference of the discharge vessel 2. It consists of a circular induction coil 3. Reference numeral 5 denotes an apparatus body having a built-in high frequency generation circuit (not shown). Reference numeral 6 denotes an electromagnetic shield means composed of a conductive mesh, which has a substantially hemispherical shape that covers the lamp 1, the pitch of the mesh is coarse in the vicinity of the induction coil 3 and is thick in the other portions. ..

【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 shield means 6 is provided in the vicinity of the induction coil 3, the effective Q of the induction coil 3 does not decrease, so that the efficiency does not decrease and the efficiency from the irradiation surface is reduced. It is possible to prevent noise leakage. Further, since the mesh pitch of the electromagnetic shield means 6 is coarse near the induction coil 3, the light around the induction coil 3 which is the brightest part of the discharge vessel 2 can be efficiently extracted to the outside in the lighting state.

【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. The difference from the above embodiment is that the electromagnetic shield means 6 has a substantially hemispherical glass globe 7 and a conductive material formed on the inner surface thereof. In addition to the thin film 8 of metal oxide having the above structure, the metal oxide film 8 is thin in the vicinity of the induction coil 3 and thick in other portions. Therefore, the description will be omitted by giving the same reference numerals to the same components.

【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 such a configuration, in addition to the effects of the above-described embodiment, it is possible to provide a finer design than the conductive mesh and to provide an electrodeless discharge lamp device having a good appearance.

【0013】[0013]

【考案の効果】[Effect of the device]

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。 As described above, the present invention covers the discharge vessel and the induction coil with the conductive electromagnetic shield means and reduces the shielding effect of the electromagnetic shield means in the vicinity of the induction coil, so that the efficiency of the lamp is not impaired. It is possible to provide an electrodeless discharge lamp device that can be downsized and has no noise leakage.

【図面の簡単な説明】[Brief description of drawings]

【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 a different 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 another conventional example.

【符号の説明】[Explanation of symbols]

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 1 Electrodeless discharge lamp 2 Discharge container 3 Induction coil 4 High frequency generating circuit 5 Device body 6 Electromagnetic shield 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 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koji Hiramatsu 1048, Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works Co., Ltd.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】 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
特徴とする無電極放電灯装置。
1. A discharge gas is discharged and emitted by an induction electromagnetic field generated by circling an induction coil in the vicinity of a translucent discharge vessel in which a discharge gas is sealed, and applying a high-frequency current to the induction coil. In the electrodeless discharge lamp device configured as described above, the discharge container and the induction coil are covered with a conductive electromagnetic shield means, and the shielding effect of the electromagnetic shield means is reduced in the vicinity of the induction coil. Electrode discharge lamp device.
JP3148691U 1991-05-08 1991-05-08 Electrodeless discharge lamp device Expired - Fee Related JP2529216Y2 (en)

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 true JPH0515312U (en) 1993-02-26
JP2529216Y2 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)

Also Published As

Publication number Publication date
JP2529216Y2 (en) 1997-03-19

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