WO2003003408A1 - Lampe a decharge a electrodes exterieures - Google Patents
Lampe a decharge a electrodes exterieures Download PDFInfo
- Publication number
- WO2003003408A1 WO2003003408A1 PCT/JP2002/006358 JP0206358W WO03003408A1 WO 2003003408 A1 WO2003003408 A1 WO 2003003408A1 JP 0206358 W JP0206358 W JP 0206358W WO 03003408 A1 WO03003408 A1 WO 03003408A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- external electrode
- discharge lamp
- electrode discharge
- metal oxide
- lamp
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
- H01J65/04—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/35—Vessels; Containers provided with coatings on the walls thereof; Selection of materials for the coatings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
- H01J65/04—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
- H01J65/042—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field
- H01J65/046—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field the field being produced by using capacitive means around the vessel
Definitions
- the present invention relates to a low-pressure discharge lamp having a dielectric barrier discharge type electrode, and more particularly, to an external electric discharge lamp in which electrodes are provided on both ends of a tubular glass container having a discharge medium sealed therein. It relates to an extreme discharge lamp. Background art
- FIG. 1 is a sectional view showing a conventional low-pressure discharge lamp
- FIG. 2 is a sectional view taken along line AA of FIG.
- the low-pressure discharge lamp 10 has a tubular glass container 1 in which an ionizable discharge medium 4 mainly composed of a rare gas or mercury and a rare gas is hermetically sealed.
- Electrodes 2 and 3 are provided on the outer peripheral surfaces of both ends of the tubular glass lamp vessel 1. As shown in FIG.
- the mounting structure of the electrodes 2 and 3 is such that C-shaped metal conductors 2 A and 3 A having spring elasticity are fitted to the outer periphery of both ends of the tubular glass lamp vessel 1. .
- Such a discharge lamp in which the electrodes 2 and 3 are provided on the outer peripheral surfaces at both ends of the tubular glass lamp vessel 1 is called an external electrode discharge lamp.
- a metal conductor foil such as aluminum tape is used, which is wound around and adhered to the outer peripheral surface of the glass container via, for example, an acryl-based adhesive, so that the electrodes and the glass container are connected to each other.
- the external electrode discharge lamp can be regarded as a capacitor as shown in the equivalent circuit shown in FIG. And in the case of a capacitor, its capacitance C is expressed by the following equation.
- the capacitance C is roughly proportional to the area S of the external electrode.
- a low-pressure discharge lamp in which a phosphor layer is formed on the inner wall surface of a tubular glass lamp vessel 1 is also known.
- This low-pressure discharge lamp is used as a fluorescent lamp.
- the conventional low-pressure discharge lamp 10 shown in FIG. 1 when a high-frequency voltage is supplied between the electrodes 2 and 3, the glass part inside the electrodes 2 and 3 operates as a dielectric, so that the inside of the tubular glass lamp vessel 1 is increased. Is supplied with power. Thereby, the discharge medium 4 is ionized and emits light. Further, in the low-pressure discharge lamp 10 used as a fluorescent lamp, light emitted from the discharge medium 4 is applied to a phosphor layer formed on the inner peripheral surface of the tubular glass lamp vessel 1 to emit fluorescent light.
- the conventional external electrode discharge lamp has the following problems.
- One of the points is that a hole having a diameter of, for example, about 0.1 mm is opened in the glass tubular container 1 while the external electrode discharge lamp is turned on, and the lamp may not be turned on.
- the place where this hole is opened is a part located inside the electrode arrangement part in the lamp vessel 1.
- a hole is also generated in a low-pressure discharge lamp used as a fluorescent lamp, but the location is also in a glass portion inside the electrode arrangement portion in the lamp vessel 1.
- the present invention has been made in order to solve such a conventional problem, and it is possible to prevent a hole from being formed in a specific portion of a tubular glass container, and to provide an external electrode discharge device having a long life. It is intended to provide a lamp.
- DISCLOSURE OF THE INVENTION The present invention relates to an external electrode discharge lamp having a dielectric barrier discharge type electrode on an outer peripheral surface of an end portion of a tubular glass vessel, wherein the tubular glass lamp vessel is located at least inside a portion where the electrode is provided.
- a protective layer is formed on the inner wall so that a corresponding portion of the inner wall is not exposed to the internal space of the lamp container.
- the protective layer is a metal oxide layer.
- the protective layer may have a two-layer structure in which a phosphor layer and a metal oxide layer are stacked, or a three-layer structure in which a metal oxide layer and a phosphor layer are alternately stacked. .
- the protective layer can be formed of a mixture of a phosphor and a metal oxide.
- the metal oxide used for the protective layer one material selected from titanium oxide, aluminum oxide, yttrium oxide, and zinc oxide or a mixture of a plurality of materials can be used.
- FIG. 2 is a cross-sectional view of the electrode portion in FIG. 1 along the line AA.
- FIG. 3 is an equivalent circuit diagram of a conventional external electrode discharge lamp.
- FIG. 4 is a sectional view of the low-pressure discharge lamp according to the first embodiment of the present invention.
- FIG. 5 is a sectional view of a low-pressure discharge lamp according to a second embodiment of the present invention.
- FIG. 6 is a sectional view of a low-pressure discharge lamp according to a third embodiment of the present invention.
- FIG. 7 is a sectional view of a low-pressure discharge lamp according to a fourth embodiment of the present invention.
- FIG. 8 is a sectional view of a low-pressure discharge lamp according to a fifth embodiment of the present invention.
- FIG. 9 is a sectional view of a low-pressure discharge lamp according to a sixth embodiment of the present invention.
- FIG. 4 shows the structure of an external electrode discharge lamp having a dielectric barrier discharge type electrode according to a first embodiment of the present invention.
- the external electrode discharge lamp 12 has a tubular glass container 20. Both ends of the tubular glass container 20 are sealed, and an ionizable discharge medium 80 containing mercury and a rare gas is sealed therein.
- electrodes 30 and 40 similar to those of the related art are provided.
- Metal oxide layers 90 are formed on the inner walls at both ends of the tubular glass container 20, thereby protecting the inner walls of the glass container 20. That is, by covering the inner wall surface of the end portion of the tubular glass container 20 where the electrodes 30 and 40 are located with the metal oxide layer 90, the inner surface of the tubular glass container 20 is in contact with the discharge medium 80. Avoid contact.
- the metal oxide one material selected from titanium oxide, aluminum oxide, yttrium oxide, and zinc oxide, or a mixture of a plurality of materials selected from these materials can be used.
- the reason why the perforation occurs in the tubular glass container 1 is that the mercury gas contained in the discharge medium 80 is trapped on the inner wall of the tubular glass container 1 and agglomerates, and the discharge concentrates on this portion. This is because the glass is melted by local heating.
- the present invention provides the metal oxide layer 9 so that at least the inner wall surface of the tubular glass container 20 where the electrodes 30 and 40 are disposed is not exposed to the internal space of the container 20. By covering with a protective layer such as 0, the glass material in this portion is protected, and holes in the container 20 are prevented.
- the tubular glass container 20 was made of borosilicate glass having an outer diameter of 2.6 mm, an inner diameter of 2.0 mm, and a total length of 350 mm.
- the electrodes 30 and 40 were formed of aluminum tape, the thickness was 0.1 mm, and the length of the disposed portion was 20 mm.
- the amount of mercury was 3 mg.
- FIG. 5 is a sectional view showing a second embodiment of the present invention.
- This external electrode discharge lamp 13 is different from the external electrode discharge lamp 12 shown in FIG. 4 in that a metal oxide layer 90 as a protective layer is formed on the entire inner wall of the tubular glass container 20. .
- the inner glass wall at the end of the glass lamp vessel 20 provided with the electrodes 30 and 40 can be protected, and perforation can be prevented.
- any of the materials listed in the first embodiment can be used as the metal oxide material.
- FIG. 6 is a sectional view showing a third embodiment of the present invention.
- the external electrode discharge lamp 14 is formed by coating the entire inner wall surface of the tubular glass container 20 with a phosphor layer 70 that emits visible light of three wavelengths of red, blue, and green and the metal layer shown in the second embodiment. It has a two-layer structure with an oxide layer 90. That is, the phosphor layer 70 is formed on the inner wall surface of the tubular glass container 20, and the metal oxide layer 90 is formed as a protective screen on the surface thereof. In this case, the metal oxide layer 90 may be partially formed only at the end of the lamp container 20.
- titanium oxide having an ultraviolet absorbing effect as the metal oxide layer 90, deterioration of the phosphor layer due to ultraviolet light can be suppressed. Further, even when aluminum oxide having a high ultraviolet ray reflection effect is used, deterioration of the phosphor layer due to ultraviolet rays can be suppressed. Further, by using yttrium oxide, which is a substance that hardly adsorbs mercury, for the metal oxide layer 90, mercury consumption due to adsorption of mercury to the phosphor layer can be suppressed.
- FIG. 7 is a sectional view showing a fourth embodiment of the present invention.
- This external electrode discharge lamp 15 is different from the external electrode discharge lamp 14 shown in FIG. 6 in that a metal oxide layer 90 is formed on the inner wall surface of the tubular glass container 20 and the surface thereof is formed of a metal oxide layer. Cover the entire layer 90 As described above, the phosphor layer 70 is formed. Also in this case, the metal oxide layer 90 may be partially provided only at the end of the lamp vessel 20.
- FIG. 8 is a sectional view showing a fifth embodiment of the present invention.
- This external electrode discharge lamp 16 has a metal oxide layer 91 covering the entire inner wall surface of the tubular glass container 20 and has a fluorescent surface over the entire surface, as in the second embodiment shown in FIG. It is characterized in that a body layer 70 is formed, and the entire surface of the phosphor layer 70 is further covered with another metal oxide layer 92 to form a three-layer structure. Also in this case, the metal oxide layers 91 and 92 may be partially provided only at the end of the lamp vessel 20.
- the structure in which the metal oxide layer and the phosphor layer are laminated on the inner wall of the tubular glass container 20 corresponding to the inside of the portion where the electrodes 30 and 40 are provided since the protective layer is formed so that the glass portion is not exposed to the internal space of the container 20, the effect of preventing the glass portions inside the electrodes 30 and 40 from being perforated can be further enhanced.
- FIG. 9 is a diagram showing a sixth embodiment of the present invention.
- the external electrode discharge lamp 17 uses a mixture of the above-described phosphor material and metal oxide material as a material of the protective layer, and the protective layer 93 of this mixture is used at least in a portion where the electrodes 30 and 40 are provided. It is formed on the inner wall surface of the tubular glass container 20 corresponding to the inside so that the glass surface is not exposed to the internal space of the glass container 20. For this reason, perforations in the glass container 20 at the poles 30 and 40 can be effectively prevented.
- the protective layer is formed on the inner wall surface of the tubular glass container corresponding to at least the inside of the electrode arrangement portion, and the portion is formed in the space of the glass container. Because it is not exposed, the glass container is not punctured during use of the discharge lamp, and the lamp life can be extended.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Electromagnetism (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/482,133 US20040178731A1 (en) | 2001-06-27 | 2002-06-25 | Outside electrode discharge lamp |
CN 02802196 CN1465090A (zh) | 2001-06-27 | 2002-06-25 | 外部电极放电灯 |
EP02738800A EP1408533A4 (en) | 2001-06-27 | 2002-06-25 | FOREIGN ELECTRODE DISCHARGE LAMP |
KR1020037002776A KR100745958B1 (ko) | 2001-06-27 | 2002-06-25 | 외부 전극 방전 램프 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001-194868 | 2001-06-27 | ||
JP2001194868A JP2003017005A (ja) | 2001-06-27 | 2001-06-27 | 低圧放電ランプ |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003003408A1 true WO2003003408A1 (fr) | 2003-01-09 |
Family
ID=19032928
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/006358 WO2003003408A1 (fr) | 2001-06-27 | 2002-06-25 | Lampe a decharge a electrodes exterieures |
Country Status (7)
Country | Link |
---|---|
US (1) | US20040178731A1 (ja) |
EP (1) | EP1408533A4 (ja) |
JP (1) | JP2003017005A (ja) |
KR (1) | KR100745958B1 (ja) |
CN (1) | CN1465090A (ja) |
TW (1) | TW554368B (ja) |
WO (1) | WO2003003408A1 (ja) |
Cited By (1)
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CN100380572C (zh) * | 2003-07-25 | 2008-04-09 | 三菱电机株式会社 | 放电发光装置及使用它的紧贴图像传感器 |
Families Citing this family (25)
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KR20040106732A (ko) * | 2003-06-11 | 2004-12-18 | 삼성전자주식회사 | 램프, 이의 제조 방법, 이를 갖는 백라이트 어셈블리 및액정표시장치 |
JP4249689B2 (ja) | 2003-11-25 | 2009-04-02 | Necライティング株式会社 | 外部電極型放電ランプおよびその製造方法 |
KR20050051204A (ko) | 2003-11-27 | 2005-06-01 | 삼성전자주식회사 | 플라즈마 평판 램프 |
JP4238359B2 (ja) * | 2003-12-25 | 2009-03-18 | 独立行政法人産業技術総合研究所 | 基板汚染粒子検出方法およびその装置 |
TWI264037B (en) * | 2004-01-20 | 2006-10-11 | Harison Toshiba Lighting Corp | Dielectric barrier discharge lamp, and ultraviolet-ray irradiation device |
KR100705095B1 (ko) * | 2004-03-05 | 2007-04-06 | 닛본 덴끼 가부시끼가이샤 | 외부 전극형 방전 램프와 그 제조 방법 |
JP2005347569A (ja) * | 2004-06-03 | 2005-12-15 | Ushio Inc | フラッシュランプ照射装置 |
KR100622688B1 (ko) * | 2004-07-23 | 2006-09-14 | (주)석경에이.티 | 형광광원용 산화이트륨 코팅용 조성물, 이를 이용한 형광광원의 제조방법 및 이에 의하여 제조되는 산화이트륨층을 포함하는 형광광원 |
JP4525305B2 (ja) * | 2004-11-12 | 2010-08-18 | パナソニック株式会社 | 蛍光ランプ、バックライトユニット及び液晶テレビ |
TW200612457A (en) | 2004-10-13 | 2006-04-16 | Matsushita Electric Ind Co Ltd | Fluorescent lamp, backlight unit, and liquid crystal television for suppressing corona discharge |
WO2006088052A1 (ja) * | 2005-02-16 | 2006-08-24 | Sharp Kabushiki Kaisha | 外部電極蛍光ランプ、照明装置、表示装置、複写機 |
KR101150196B1 (ko) * | 2005-03-14 | 2012-06-12 | 엘지디스플레이 주식회사 | 액정표시장치용 형광램프 |
TW200705510A (en) * | 2005-05-13 | 2007-02-01 | Matsushita Electric Ind Co Ltd | Fluorescent lamp, backlight unit, and liquid crystal display device |
KR20070009425A (ko) * | 2005-07-14 | 2007-01-18 | 마츠시타 덴끼 산교 가부시키가이샤 | 외부 전극을 구비한 방전램프 및 그 제조방법, 당해방전램프를 구비한 백라이트 유닛 및 액정표시장치 |
JP2007095531A (ja) * | 2005-09-29 | 2007-04-12 | Matsushita Electric Ind Co Ltd | 外部電極型ランプ、バックライトユニット、および液晶表示装置 |
KR100735053B1 (ko) * | 2005-10-31 | 2007-07-06 | 희성전자 주식회사 | 초기 발광 특성이 우수한 형광램프 |
KR100706184B1 (ko) | 2005-12-26 | 2007-04-12 | 주식회사 디엠에스 | 형광램프 및 이의 제조방법 |
KR101183418B1 (ko) * | 2005-12-30 | 2012-09-14 | 엘지디스플레이 주식회사 | 외부 전극 형광램프 및 이를 이용한 액정표시장치의백라이트 유닛 |
JP5111188B2 (ja) * | 2008-03-25 | 2012-12-26 | ユーテック株式会社 | 外部電極放電ランプ用給電端子、及び、光源装置 |
KR101101741B1 (ko) * | 2009-06-15 | 2012-01-05 | 태현개발(주) | 기둥-보 분리타설용 코너 막음 유닛 |
DE102009059705A1 (de) * | 2009-12-18 | 2011-06-22 | Sick Maihak GmbH, 79183 | Gasentladungslampe |
KR200453780Y1 (ko) * | 2010-11-19 | 2011-05-26 | 이병원 | 거푸집의 코너연결유닛 및 이를 이용한 거푸집의 코너 시공방법 |
CN105070640A (zh) * | 2015-07-30 | 2015-11-18 | 安徽中杰信息科技有限公司 | 真空无极紫外灯的激发方式 |
JP6885765B2 (ja) * | 2017-03-28 | 2021-06-16 | 株式会社オーク製作所 | 放電ランプおよびオゾン生成方法 |
KR102214444B1 (ko) * | 2019-03-08 | 2021-02-09 | 주식회사 원익큐엔씨 | 유전체 배리어 방전램프 |
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JPH1040872A (ja) * | 1996-07-26 | 1998-02-13 | Toshiba Lighting & Technol Corp | 平面型光源および液晶ディスプレイ |
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2001
- 2001-06-27 JP JP2001194868A patent/JP2003017005A/ja not_active Abandoned
-
2002
- 2002-06-25 WO PCT/JP2002/006358 patent/WO2003003408A1/ja not_active Application Discontinuation
- 2002-06-25 US US10/482,133 patent/US20040178731A1/en not_active Abandoned
- 2002-06-25 CN CN 02802196 patent/CN1465090A/zh active Pending
- 2002-06-25 KR KR1020037002776A patent/KR100745958B1/ko not_active IP Right Cessation
- 2002-06-25 EP EP02738800A patent/EP1408533A4/en not_active Withdrawn
- 2002-06-26 TW TW091114067A patent/TW554368B/zh not_active IP Right Cessation
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JPH1040872A (ja) * | 1996-07-26 | 1998-02-13 | Toshiba Lighting & Technol Corp | 平面型光源および液晶ディスプレイ |
JPH10222083A (ja) * | 1997-02-04 | 1998-08-21 | Hitachi Ltd | 平板型光源およびその液晶表示装置 |
JP2000082443A (ja) * | 1998-06-25 | 2000-03-21 | Toshiba Lighting & Technology Corp | 希ガス放電ランプおよび照明装置 |
JP2000100389A (ja) * | 1998-09-18 | 2000-04-07 | Ushio Inc | 放電ランプ |
JP2002008408A (ja) * | 2000-04-15 | 2002-01-11 | 光燮 ▲チョー▼ | 蛍光ランプ、バックライト及びバックライト駆動方法 |
Non-Patent Citations (1)
Title |
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See also references of EP1408533A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100380572C (zh) * | 2003-07-25 | 2008-04-09 | 三菱电机株式会社 | 放电发光装置及使用它的紧贴图像传感器 |
Also Published As
Publication number | Publication date |
---|---|
TW554368B (en) | 2003-09-21 |
US20040178731A1 (en) | 2004-09-16 |
KR100745958B1 (ko) | 2007-08-02 |
JP2003017005A (ja) | 2003-01-17 |
EP1408533A1 (en) | 2004-04-14 |
EP1408533A4 (en) | 2006-12-27 |
KR20040014945A (ko) | 2004-02-18 |
CN1465090A (zh) | 2003-12-31 |
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