JPH05251056A - Electrodeless discharge lamp - Google Patents
Electrodeless discharge lampInfo
- Publication number
- JPH05251056A JPH05251056A JP24313491A JP24313491A JPH05251056A JP H05251056 A JPH05251056 A JP H05251056A JP 24313491 A JP24313491 A JP 24313491A JP 24313491 A JP24313491 A JP 24313491A JP H05251056 A JPH05251056 A JP H05251056A
- Authority
- JP
- Japan
- Prior art keywords
- discharge lamp
- gas
- lamp
- substance
- rare gas
- 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
Links
Landscapes
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、水銀と希ガスまたは希
ガスのみとともに、加熱されて気体になる発光物質を発
光管内に封入した無電極放電ランプに関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrodeless discharge lamp in which an arc tube is filled with mercury and a rare gas or only a rare gas and a luminous substance which is heated to become a gas.
【０００２】[0002]
【従来の技術】図３は一般的な高輝度放電ランプを示す
もので、石英ガラスにて形成された発光管１の両端に放
電電極２ａ，２ｂが対向して配設され、両放電電極２
ａ，２ｂは封止部３ａ，３ｂに封入されたモリブデン箔
のような金属箔４ａ，４ｂに接続されている。この金属
箔４ａ，４ｂは発光管１の支持も兼ねる支持導線５ａ，
５ｂに接続されており、発光管１は固定具６ａ，６ｂを
介して支持導線５ａ，５ｂに固定され、支持導線５ａ，
５ｂは口金７を介して放電灯点灯回路（図示せず）に接
続されるようになっている。また、発光管１内には、希
ガス、水銀および金属ハロゲン化合物よりなる発光物質
が適量封入されており、発光管１を被う外管８内にはガ
スが封入されている。2. Description of the Related Art FIG. 3 shows a general high-intensity discharge lamp. Discharge electrodes 2a and 2b are arranged opposite to each other at both ends of an arc tube 1 made of quartz glass.
The a and 2b are connected to metal foils 4a and 4b such as molybdenum foil enclosed in the sealing portions 3a and 3b. The metal foils 4a and 4b are supporting conductors 5a, which also serve to support the arc tube 1.
5b, the arc tube 1 is fixed to the support conductors 5a, 5b via fixtures 6a, 6b, and the support conductors 5a, 5b
5b is connected via a base 7 to a discharge lamp lighting circuit (not shown). An appropriate amount of a luminescent substance composed of a rare gas, mercury and a metal halogen compound is enclosed in the arc tube 1, and a gas is enclosed in the outer tube 8 covering the arc tube 1.
【０００３】ところで、このように金属ハロゲン化合物
を発光物質として発光管１内に封入した従来の高輝度放
電ランプにおいては、安定な発光動作を行わせるために
は、発光管１の最冷部の温度を約６００℃以上に設定し
て発光物質を十分に蒸発させる必要があった。その結
果、入力エネルギ−の約７０％が発光に寄与しない熱損
失あるいは赤外放射損失となってしまい、ランプ効率が
悪くなるという問題があった。また、始動時において、
発光管１の最冷部の温度が６００℃に達するまでに５分
程度かかるので、定常点灯状態になるまでに要する時間
が長くなり、始動性に問題があった。さらにまた、発光
管１の管壁温度が６００℃以上になるので、発光管１と
して耐熱特性が良好な石英ガラスを用いる必要があるの
で、コストが高くなるという問題があった。By the way, in the conventional high-intensity discharge lamp in which the metal halogen compound is enclosed in the arc tube 1 as a light emitting substance, in order to perform a stable light emitting operation, the coldest part of the arc tube 1 is used. It was necessary to set the temperature to about 600 ° C. or higher to sufficiently evaporate the luminescent material. As a result, about 70% of the input energy becomes heat loss or infrared radiation loss that does not contribute to light emission, and there is a problem that the lamp efficiency deteriorates. Also, at the time of starting,
Since it takes about 5 minutes for the temperature of the coldest part of the arc tube 1 to reach 600 ° C., it takes a long time to reach a steady lighting state, and there is a problem in startability. Furthermore, since the tube wall temperature of the arc tube 1 is 600 ° C. or higher, it is necessary to use quartz glass having good heat resistance as the arc tube 1, which causes a problem of high cost.
【０００４】これらの問題を解決するために本願出願人
は先に、水銀、希ガスとともに、加熱されて気体になり
放電による励起エネルギ−を受けて発光する発光物質を
放電電極を具備した発光管内に封入した高輝度放電ラン
プにおいて、４００℃以下で気体になるような発光物質
を用いることにより、ランプ効率が高く、始動性が良好
で、しかも安価な高輝度放電ランプを提案した（特開昭
６３−１７４２５７号公報参照）。In order to solve these problems, the applicant of the present invention has previously proposed, in a light emitting tube equipped with a discharge electrode, a light emitting substance which emits light when heated to gas and receiving excitation energy due to discharge, together with mercury and a rare gas. In the high-intensity discharge lamp sealed in, a high-intensity discharge lamp with high lamp efficiency, good startability, and low cost was proposed by using a light-emitting substance that becomes a gas at 400 ° C. or lower (Japanese Patent Laid-open No. Sho-61-200). 63-174257).
【０００５】しかし、４００℃以下で気体になるような
発光物質に有機金属化合物を用いた放電電極を有する高
輝度放電ランプにおいては、点灯中に放電電極の先端に
できる電極スポットの温度は１０００℃を越えるので、
この高温部と接触した気体状態の発光物質は分解または
変質してしまい、長時間点灯するにつれて発光管内の発
光物質が減少し、長寿命の光源は得られないという欠点
があるので、この欠点を除去するために発光管を二重管
構造にする必要があった。However, in a high-intensity discharge lamp having a discharge electrode using an organometallic compound as a light-emitting substance which becomes a gas at 400 ° C. or lower, the temperature of the electrode spot formed at the tip of the discharge electrode during lighting is 1000 ° C. Because it exceeds
The luminescent substance in a gas state in contact with the high temperature part is decomposed or deteriorated, and the luminescent substance in the arc tube decreases as the lamp is lit for a long time, so that there is a drawback that a light source with a long life cannot be obtained. In order to remove it, it was necessary to make the arc tube a double tube structure.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記の
ように発光管を二重管構造にし、内管と外管との間に発
光物質を封入するような放電ランプは、製造が容易では
なく、また、製造コストも高くなるという欠点がある。However, a discharge lamp in which the luminous tube has a double-tube structure and the luminous substance is sealed between the inner tube and the outer tube as described above is not easy to manufacture, Further, there is a drawback that the manufacturing cost becomes high.
【０００７】本発明は、上記欠点に鑑みなされたもの
で、その目的とするところは、ランプ効率が高く、始動
性が良く、安価で長寿命で、しかも製造が容易な放電ラ
ンプを提供することにある。The present invention has been made in view of the above-mentioned drawbacks, and an object of the present invention is to provide a discharge lamp having high lamp efficiency, good startability, low cost, long life, and easy manufacture. It is in.
【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
本発明は、水銀と希ガスとともに若しくは希ガスのみと
ともに、加熱されて気体になり放電による励起エネルギ
−を受けて発光する発光物質を発光管内に封入した無電
極放電ランプにおいて、前記発光物質を４００℃以下で
気体になる発光物質としたことを特徴とするものであ
る。In order to solve the above-mentioned problems, the present invention emits a luminescent substance which emits light when heated with mercury and a rare gas or only with a rare gas to become a gas and receive excitation energy due to discharge. In the electrodeless discharge lamp sealed in the tube, the luminescent substance is a luminescent substance which becomes a gas at 400 ° C. or lower.
【０００９】[0009]
【作用】４００℃以下で気体になる発光物質と、放電ラ
ンプとして放電電極を有しない無電極放電ランプを組み
合わせることにより、放電電極の高温部に発光物質が接
することがなくなり、発光物質の熱による分解、変質が
生じない。By combining a luminescent substance that becomes a gas at 400 ° C. or less with an electrodeless discharge lamp that does not have a discharge electrode as a discharge lamp, the luminescent substance will not come into contact with the high temperature part of the discharge electrode, and No decomposition or alteration will occur.
【００１０】[0010]
【実施例】図１および図２は本発明の一実施例を示すも
ので、図１は本発明に係る無電極放電ランプを用いた装
置の概略図、図２は本発明に係る無電極放電ランプのラ
ンプとコイル部分の断面図である。1 and 2 show one embodiment of the present invention. FIG. 1 is a schematic view of an apparatus using an electrodeless discharge lamp according to the present invention, and FIG. 2 is an electrodeless discharge according to the present invention. It is sectional drawing of a lamp and a coil part of a lamp.
【００１１】石英ガラスや硬質ガラス等の透光性を有す
る物質で形成された放電電極を有しない発光管８の内部
には、水銀と希ガスまたは希ガスのみとともに、４００
℃以下で気体になる発光物質が封入されている。実施例
では、発光物質として前記従来例と同一の４００℃以下
で昇華するβ−ジケトン金属キレート（特開昭６３−１
７４２５７号公報に開示された実施例１と同一の発光物
質）を用いている。また、発光管８の外周壁には電磁界
印加用のコイル９が配設されており、このコイル９の両
端は高周波電源装置１０に接続されている。Inside the arc tube 8 formed of a material having a light-transmitting property such as quartz glass or hard glass and having no discharge electrode, mercury and a rare gas or only a rare gas are contained, and 400
A luminescent substance that becomes a gas below ℃ is enclosed. In the examples, β-diketone metal chelates that sublime at 400 ° C. or lower, which is the same as the above-mentioned conventional example, are used as luminescent substances (JP-A-63-1).
The same luminescent material as in Example 1 disclosed in Japanese Patent No. 74257) is used. A coil 9 for applying an electromagnetic field is arranged on the outer peripheral wall of the arc tube 8, and both ends of the coil 9 are connected to a high frequency power supply device 10.
【００１２】このように構成された無電極放電ランプを
用いて特性を測定した結果、ランプ寿命を除き、従来例
である前記特開昭６３−１７４２５７号公報で開示した
実施例１とほぼ同等の結果が得られた。ランプ寿命につ
いては、光束値が初期値（点灯時間が０時間の時の値）
の７０％に減少する時間で比較したところ、前記従来例
に係るランプが約１００時間であったのに対して、本実
施例にかかるランプでは６０００時間点灯した時点でも
その減少割合は７０％に到らなかった。As a result of measuring the characteristics using the electrodeless discharge lamp having the above-mentioned structure, the lamp life was almost the same as that of Example 1 disclosed in the above-mentioned JP-A-63-174257, except for the life of the lamp. Results were obtained. Regarding the lamp life, the luminous flux value is the initial value (value when the lighting time is 0 hour)
When compared with the lamp according to the above-mentioned conventional example for about 100 hours, the reduction rate of the lamp according to the present embodiment is 70% at the time of lighting for 6000 hours. I didn't arrive.
【００１３】[0013]
【発明の効果】本発明は上記のように、水銀と希ガスと
ともに若しくは希ガスのみとともに、加熱されて気体に
なり放電による励起エネルギ−を受けて発光する発光物
質を発光管内に封入した無電極放電ランプにおいて、前
記発光物質を４００℃以下で気体になる発光物質とした
ことにより、ランプ効率が高く、始動性が良く、安価で
長寿命で、しかも製造が容易な無電極放電ランプを提供
できる。As described above, the present invention is an electrodeless electrode in which a luminous substance which is heated with mercury and a rare gas or with only a rare gas to become a gas when heated and receives excitation energy due to discharge and emits light is enclosed in an arc tube. In the discharge lamp, by using the light emitting substance as a light emitting substance which becomes a gas at 400 ° C. or lower, it is possible to provide an electrodeless discharge lamp having high lamp efficiency, good startability, low cost, long life, and easy manufacture. ..
【図１】本発明に係る無電極放電ランプを用いた装置の
概略図である。FIG. 1 is a schematic view of an apparatus using an electrodeless discharge lamp according to the present invention.
【図２】本発明に係る無電極放電ランプのランプとコイ
ル部分の断面図である。FIG. 2 is a cross-sectional view of a lamp and a coil portion of an electrodeless discharge lamp according to the present invention.
【図３】従来例に係る高輝度放電ランプを示す正面図で
ある。FIG. 3 is a front view showing a high-intensity discharge lamp according to a conventional example.
８ 発光管 ９ コイル １０ 高周波電源装置 8 arc tube 9 coil 10 high frequency power supply
Claims (1)
みとともに、加熱されて気体になり放電による励起エネ
ルギ−を受けて発光する発光物質を発光管内に封入した
無電極放電ランプにおいて、前記発光物質を４００℃以
下で気体になる発光物質としたことを特徴とする無電極
放電ランプ。1. An electrodeless discharge lamp in which a light-emitting substance which is heated with mercury and a rare gas or only with a rare gas to become a gas when heated to receive excitation energy due to discharge and emits light is enclosed in an arc tube. An electrodeless discharge lamp characterized by using a luminescent substance which becomes a gas at 400 ° C. or lower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24313491A JPH05251056A (en) | 1991-09-24 | 1991-09-24 | Electrodeless discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24313491A JPH05251056A (en) | 1991-09-24 | 1991-09-24 | Electrodeless discharge lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05251056A true JPH05251056A (en) | 1993-09-28 |
Family
ID=17099306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24313491A Pending JPH05251056A (en) | 1991-09-24 | 1991-09-24 | Electrodeless discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05251056A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004049387A3 (en) * | 2002-11-23 | 2005-07-28 | Philips Intellectual Property | Low-pressure gas discharge lamp with mercury-free gas filling |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62208544A (en) * | 1986-03-07 | 1987-09-12 | Matsushita Electric Works Ltd | Non-electrode discharge lamp |
| JPS63174257A (en) * | 1987-01-14 | 1988-07-18 | Matsushita Electric Works Ltd | High-brightness discharge lamp |
-
1991
- 1991-09-24 JP JP24313491A patent/JPH05251056A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62208544A (en) * | 1986-03-07 | 1987-09-12 | Matsushita Electric Works Ltd | Non-electrode discharge lamp |
| JPS63174257A (en) * | 1987-01-14 | 1988-07-18 | Matsushita Electric Works Ltd | High-brightness discharge lamp |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004049387A3 (en) * | 2002-11-23 | 2005-07-28 | Philips Intellectual Property | Low-pressure gas discharge lamp with mercury-free gas filling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5841229A (en) | Amalgam support arrangement for an electrodeless discharge lamp | |
| JPH06132018A (en) | Electrodeless lamp device | |
| KR20030057323A (en) | Cold cathode type fluorescent lamp | |
| JPH10283993A (en) | Metal halide lamp | |
| JPH04308647A (en) | Glow discharge lamp having incandescence emitting filament | |
| EP2149146B1 (en) | High pressure sodium lamp | |
| JP2000164174A (en) | Low-pressure mercury vapor discharge lamp | |
| JPH05251056A (en) | Electrodeless discharge lamp | |
| JP2518015B2 (en) | Discharge lamp | |
| JPS6297298A (en) | Non-electrode discharge lamp apparatus | |
| US20090200909A1 (en) | Single base fluorescent lamp and illumination device | |
| US20120133304A1 (en) | Discharge lamp device | |
| JPH03285253A (en) | High pressure metallic vapor discharge lamp | |
| JPH0548204U (en) | Metal halide lamp | |
| JPH0831374A (en) | Fluorescent lamp and its device | |
| JPS5994360A (en) | High pressure discharger | |
| JPS6324545A (en) | Instant lighting property improving method for small-sized high-pressure metallic vapor discharge lamp | |
| JPH11288687A (en) | Discharge lamp | |
| JP2005302385A (en) | Fluorescent lamp | |
| JPS59175550A (en) | High pressure discharge device | |
| JPS59165363A (en) | Electrode for discharge lamp | |
| JPH0789518B2 (en) | Compact fluorescent lamp device | |
| JP2000215847A (en) | Metal vapor discharge lamp and lighting system | |
| JPS61118935A (en) | Manufacture of low pressure mercury vapor lamp | |
| JP2000223069A (en) | Metal halide lamp and lighting system |