EP1160834A2 - Niederdruck-Quecksilber-Entladungslampe mit Au enkolben - Google Patents
Niederdruck-Quecksilber-Entladungslampe mit Au enkolben Download PDFInfo
- Publication number
- EP1160834A2 EP1160834A2 EP01000191A EP01000191A EP1160834A2 EP 1160834 A2 EP1160834 A2 EP 1160834A2 EP 01000191 A EP01000191 A EP 01000191A EP 01000191 A EP01000191 A EP 01000191A EP 1160834 A2 EP1160834 A2 EP 1160834A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- phosphor
- pressure mercury
- low
- gas discharge
- 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.)
- Granted
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Classifications
-
- 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
- H01J61/32—Special longitudinal shape, e.g. for advertising purposes
- H01J61/327—"Compact"-lamps, i.e. lamps having a folded discharge path
-
- 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
- H01J61/34—Double-wall vessels or containers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/38—Devices for influencing the colour or wavelength of the light
- H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/38—Devices for influencing the colour or wavelength of the light
- H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
- H01J61/44—Devices characterised by the luminescent material
Definitions
- the invention relates to a low-pressure mercury discharge lamp, in particular one Compact fluorescent lamp with an inner bulb that forms a gas discharge tube and whose wall is made of a material that is permeable to electromagnetic radiation and is coated with a phosphor, with an outer bulb that the inner bulb surrounds, and the wall contains a phosphor, and with means for production and maintaining a low pressure mercury gas discharge.
- a conventional compact fluorescent lamp usually consists of a thin, single or multiple folded tubular gas discharge vessel, at the ends of which inside electrodes, e.g. Tungsten wire coils. Contains the discharge vessel in addition to a rare gas filling, a small amount of mercury and is together with Ballast and starter mounted on a base. Generates one in the gas discharge vessel Low pressure mercury gas discharge UV radiation caused by one or more UV phosphors, with which the inside of the gas discharge vessel is coated, in visible Light converted.
- the glass type of the gas discharge vessel is generally chosen so that it is suitable for a Mass production with short lead times is suitable. These types of glass are transparent for visible light and UV-A light with a wavelength up to 300 nm, but opaque for UV with a wavelength ⁇ 300 nm.
- This outer bulb is preferably given Appearance of conventional pear-shaped incandescent lamps to get the familiar for the consumer Get the look of lights.
- a low pressure gas discharge lamp in which the Discharge vessel forms an inner bulb which is permeable to electromagnetic radiation, which is surrounded by an outer bulb, and the outside of the inner bulb and / or the inside of the outer bulb is provided with a phosphor layer and the inner bulb Contains mercury vapor and / or metal vapor generating compounds and / or contains noble gases and is permeable to the electromagnetic radiation emitted by the Excitation of the respective gases to fluorescence arise.
- these are inner pistons made of quartz or UV-permeable special glass types.
- the object of the present invention is, among other things, an inexpensive fluorescent lamp to provide with an outer bulb that has an improved light output Has.
- the object is achieved by a low-pressure mercury gas discharge lamp, that with an inner bulb that forms a gas discharge vessel and its Wall is made of a material that is transparent and permeable to electromagnetic radiation is coated with a phosphor, with an outer bulb surrounding the inner bulb, and whose wall contains a UV-A phosphor, and with means for producing and maintaining a low pressure mercury gas discharge.
- Such a low-pressure mercury gas discharge lamp can be cost-effective Manufacture types of glass. Despite the loss of absorption, their light output is in the UV-A phosphor layer improved in the area of high eye sensitivity because additionally UV-A radiation is converted into visible light.
- the low-pressure mercury discharge lamp according to the invention does not emit UV-A radiation to the outside.
- the harmful, photo-ionizing effect of this radiation on human skin, colors, plastics and rubber products is thus avoided. Therefore, the low-pressure mercury discharge lamps according to the invention are particularly suitable for illuminating office spaces, museums and laboratories.
- the wall of the outer bulb can comprise a coating which contains the UV-A phosphor.
- the wall of the outer bulb consists of a material that contains a polymer plastic and the UV-A phosphor. This embodiment, in which the UV-A phosphor is embedded in the polymeric plastic, is particularly suitable for hydrolysis-sensitive phosphors.
- the UV-A phosphor is selected from the group ZnS: Ag, YVO 4 : Eu, Y (V, P) O 4 : Eu, Y 2 O 2 S: Eu, CaSiO 3 : Ce, Mn , CaSO 4 : Ce, Mn, Y 2 SiO 5 : Ce, Mn, BaMgAl 10 O 17 : Eu, Mn and (Ba, Sr, Ca) 5 (PO 4 ) 3 Cl: Eu, Mn.
- These UV-A phosphors are characterized by a high reflectance in the visible range from 400 to 780 nm.
- the UV-A phosphor is selected from the group ZnS: Cu, Au; CaS: Eu; SrGa 2 S 4 : Eu, and Mg 4 GeO 5.5 F: Mn. These UV-A phosphors have a body color with which additional decorative effects can be achieved.
- the inner piston tubular and folded or tubular and coiled so that it is of a pear-shaped Outer bulb can be wrapped.
- FIG. 1 schematically shows a cross section through a low-pressure mercury discharge lamp according to the invention.
- an inner bulb 1 which is the gas discharge vessel forms for the low pressure mercury gas discharge. At both ends of the Electrodes are melted into the inner bulb and ignite the gas discharge can be.
- the inner bulb is filled with mercury vapor of a few hundredths of a torr as well as argon filled.
- the wall of the inner bulb is made of a material that is compatible with UV-A radiation a wavelength between 320 to 400 nm is transparent, and is on the inside with lined with a fluorescent layer.
- the inner piston 1 is tubular and is folded in a U shape and enveloped by a pear-shaped outer bulb 2.
- the low-pressure mercury discharge lamp further comprises means for production and maintaining a low pressure mercury gas discharge, e.g. throttle and starter.
- the inner piston can also be a multiple folded or coiled tube.
- All shapes can be selected for the outer bulb, as they are from incandescent lamps is known, e.g. Ball shape, candle shape or teardrop shape.
- inner pistons and outer pistons coaxial tubes in rod, ring or U shape.
- the inner bulb preferably consists of a type of glass, as is usually used for the production of incandescent lamps and fluorescent tubes, for example of a sodium lime silicate glass with a content of 69 to 73% SiO 2 , 1 to 2% Al 2 O 3 , 3 to 4% MgO, 15 to 17% Na 2 O, 4.2 to 4.6 CaO, 0.1 to 2% BaO and 0.4 to 1.6% K 2 O.
- a sodium lime silicate glass with a content of 69 to 73% SiO 2 , 1 to 2% Al 2 O 3 , 3 to 4% MgO, 15 to 17% Na 2 O, 4.2 to 4.6 CaO, 0.1 to 2% BaO and 0.4 to 1.6% K 2 O.
- other types of glass that allow UV-A radiation up to 300 nm to pass through can be used as piston material for the inner piston.
- the inner bulb is coated on its inner bulb wall with one or more UV phosphors, which absorb the UV light generated by the low-pressure mercury gas discharge and convert it into visible light.
- Each phosphor has its characteristic absorption and emission spectrum. Since the vast majority of the energy is emitted in the resonance lines at 185.0 and 253.7 nm in the low-pressure mercury discharge, the phosphor's absorption coefficient for the inner bulb must also be high in this area.
- the preferred phosphor for the inner bulb is calcium halophosphate Ca 5 (PO 4 ) 3 (F, Cl): Sb 3+ , Mn 2+ , an aluminate phosphor, for example barium-magnesium aluminate Ba (Al, Mg) activated with europium 11 O 19 : Eu 2+ and terbium activated cerium magnesium aluminate CeMgAl 11 O 19 : Gd, Tb or LaPO 4 : Ce, Tb together with Y 2 O 3 : Eu used as a three-band phosphor mixture.
- Ca 5 (PO 4 ) 3 (F, Cl): Sb 3+ , Mn 2+ an aluminate phosphor, for example barium-magnesium aluminate Ba (Al, Mg) activated with europium 11 O 19 : Eu 2+ and terbium activated cerium magnesium aluminate CeMgAl 11 O 19 : Gd, Tb or LaPO 4
- the optimal thickness of the phosphor layer on the inner bulb is 30 to 50 nm.
- the layer may only be so thin that enough UV radiation is still absorbed is, but only so thick that not too much of the visible radiation emitted in the interior grains of the phosphor layer has arisen, is absorbed. Therefore the phosphor layer on the inner bulb can not be applied so thick that all UV radiation is absorbed because lamp glass as well as the common types of glass is permeable to UV-A radiation, it can therefore leave the inner bulb.
- the outer bulb can also be made from a conventional type of lamp glass become. If the outer bulb is made of glass, it is preferred that the UV-A phosphor is applied in the form of a coating.
- the wall of the outer bulb made of a material comprising a polymeric plastic and a UV-A phosphor.
- a polymeric plastic is polymethyl methacrylates (PMMA), Polyethylene terephthalate (THV), fluoroethylene propylene (FEP) or polyvinyl difluoride (PVDF).
- the UV-A phosphor for the outer bulb is a phosphor whose absorption maximum in the UV-A range is between 320 and 400 nm and which emits in the visible range.
- Suitable UV-A phosphors are, for example, phosphors which, in addition to an activator, also contain a sensitizer which absorbs the UV-A radiation and transmits it to the activator.
- Ce (III) and Eu (II) ions are suitable sensitizers for phosphors containing Mn (II), such as those found in CaSiO 3 : Ce, Mn, CaSO 4 : Ce, Mn, Y 2 SiO 5 : Ce, Mn , BaMgAl 10 O 17 : Eu, Mn and (Ba, Sr, Ca) 5 (PO 4 ) 3 Cl: Eu, Mn are included.
- Phosphors containing Eu (III) can contain vanadate ions VO 4 3- as a sensitizer, as is contained, for example, in the phosphors YVO 4 : Eu and Y (V, P) O 4 : Eu.
- Other suitable UV-A phosphors contain host gratings with a narrow band gap with a bandwidth between 3.0 and 4.0 eV. The lighting mechanism is such that the host lattice absorbs the UV-A radiation and transfers it to the activator. Examples of this type of UV-A phosphors are ZnS: Ag and Y 2 O 2 S: Eu.
- UV-A phosphor with a body color can also be used, such as e.g. B. the yellow phosphors ZnS: Cu, Au; SrGa 2 S 4 : Eu and Mg 4 GeO 5.5 F: Mn and the red CaS: Eu. This gives lamps that look like conventional white light bulbs when lit, but appear colored when the lamp is not on.
- UV-A phosphors can be used in an optimal particle size distribution produce an average grain size of 0.5 to 1 ⁇ m. It is determined by the properties of the phosphor, absorb UV radiation and both visible radiation to absorb as well as to scatter, but also due to the need for one on the glass wall to form firmly adhering phosphor layer. The latter requirement will only filled with very small grains, whose luminous efficacy is lower than that somewhat larger Grains.
- the phosphor powder is preferably mixed with plastic pellets and then extruded and rolled into a film. The film can then become one Outer bulb are molded.
- UV-A phosphor is to be applied to the outer bulb in a coating are, so come both dry coating processes such.
- the phosphors must be in water, an organic Solvents, optionally together with a dispersant, a surfactant and can be dispersed in an anti-foaming agent or a binder preparation.
- Suitable for binder preparations for a lamp according to the invention are organic or inorganic binder that has an operating temperature of 250 ° C without decomposition, embrittlement or survive discoloration.
- Water which has a thickener, is preferred as the solvent for the phosphor preparation such as polymethacrylic acid or polypropylene oxide is added.
- solvent for the phosphor preparation such as polymethacrylic acid or polypropylene oxide is added.
- additives such as dispersants, defoamers and powder conditioners, such as aluminum oxide, aluminum oxynitride or boric acid, the phosphor preparation is poured, rinsed or sprayed onto the inside of the outer bulb. The coating is then dried with hot air.
- the layers generally have a layer thickness of 1 to 50 ⁇ m.
- the electrons emitted by the electrodes excite the Mercury atoms of the gas filling for the emission of UV radiation of the wavelength and visible radiation.
- the UV radiation falls on the fluorescent coating of the Inner bulb and stimulates them to emit visible radiation and UV-A radiation on.
- the visible radiation passes freely through the outer bulb.
- the UV-A radiation, leaving the inner bulb excites the UV-A phosphor to emit in the outer bulb of additional visible light.
- a dispersion of 15.0% by weight of Y 2 SiO 5 : Ce, Mn, 0.75% by weight of sodium polyacrylate as a dispersing agent and 0.075% by weight of polyethylene propylene oxide as an anti-foaming agent is first wet-ground with water in a stirrer mill, until as long as the agglomerated phosphor is dispersed.
- the cleaned and heated lamp bulbs are immersed in this dispersion and then baked at 480 ° C.
- the amount of phosphor applied is 5.0 g.
- the coated outer bulb is mounted in a conventional manner together with the inner bulb, ballast and starter on a common base.
- Y 2 O 2 S Eu and 25 g of polyethylene terephthalate are dissolved in 100 g of an acetone / toluene mixture. The inside of a lamp bulb is sprayed with 10 g of this solution. The coating is then dried in an air stream. The coated outer bulb is mounted in a conventional manner together with the inner bulb, ballast and starter on a common base.
- a mixture of 90 parts of polymethyl methacrylate pellets are mixed with 10 parts of CaS: Eu mixed and extruded at 295 ° C into a film and into a pear-shaped flask shaped.
- the outer bulb is used in a conventional manner together with the Inner piston, ballast and start mounted on a common base.
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
- Luminescent Compositions (AREA)
Abstract
Description
Nach einer Ausführungsform der Erfindung kann die Wand des Außenkolben eine Beschichtung umfassen, die den UV-A-Leuchtstoff enthält.
Nach einer anderen Ausführungsform besteht die Wand des Außenkolben aus einem Material, das einen polymeren Kunststoff und den UV-A-Leuchtstoff enthält.
Diese Ausführungsform, bei dem der UV-A-Leuchtstoff in dem polymeren Kunststoff eingebettet ist, ist besonders für hydrolyseempfindliche Leuchtstoffe geeignet.
Fig 1 zeigt schematisch einen Querschnitt durch eine erfindungsgemäße NiederdruckQuecksilber-Entladungslampe.
Andere geeignete UV-A-Leuchtstoffe enthalten Wirtsgitter mit einer schmalen Bandlücke mit einer Bandbreite zwischen 3.0 und 4.0 eV. Der Leuchtmechanismus verläuft so, dass das Wirtsgitter die UV-A-Strahlung absorbiert und an den Aktivator transferiert. Beispiele für diese Art der UV-A-Leuchtstoffe sind ZnS:Ag und Y2O2S:Eu.
Claims (7)
- Niederdruck-Quecksilber-Entladungslampe, die mit einem Innenkolben, der ein Gasentladungsgefäß bildet und dessen Wand aus einem Material besteht, das für elektromagnetische Strahlung durchlässig und mit einem Leuchtstoff beschichtet ist, mit einem Außenkolben, der den Innenkolben umgibt, und dessen Wand einen UV-A-Leuchtstoff enthält, und mit Mitteln zur Erzeugung und Aufrechterhaltung einer Niederdruck-Quecksilber-Gasentladung ausgerüstet ist.
- Niederdruck-Quecksilber-Gasentladungslampe gemäß Anspruch 1,
dadurch gekennzeichnet, dass die Wand des Außenkolben eine Beschichtung umfaßt, die den UV-A-Leuchtstoff enthält. - Niederdruck-Quecksilber-Gasentladungslampe gemäß Anspruch 1,
dadurch gekennzeichnet, dass die Wand des Außenkolben aus einem Material besteht, das einen polymeren Kunststoff und den UV-A-Leuchtstoff enthält. - Niederdruck-Quecksilber-Gasentladungslampe gemäß Anspruch 1,
dadurch gekennzeichnet, dass der UV-A-Leuchtstoff ausgewählt ist aus der Gruppe ZnS:Ag YVO4:Eu, Y(V,P)O4:Eu, Y2O2S:Eu, CaSiO3:Ce,Mn, CaSO4:Ce,Mn, Y2SiO5:Ce,Mn, BaMgAl10O17:Eu,Mn und (Ba,Sr,Ca)5(PO4)3Cl:Eu,Mn - Niederdruck-Quecksilber-Gasentladungslampe gemäß Anspruch 1,
dadurch gekennzeichnet, dass der UV-A-Leuchtstoff ausgewählt ist aus der Gruppe ZnS:Cu,Au; CaS:Eu; SrGa2S4:Eu,und Mg4GeO5.5F:Mn. - Niederdruck-Quecksilber-Gasentladungslampe gemäß Anspruch 1,
dadurch gekennzeichnet, dass der Innenkolben rohrförmig und gefaltet ist. - Niederdruck-Quecksilber-Gasentladungslampe gemäß Anspruch 1,
dadurch gekennzeichnet, dass der Innenkolben rohrförmig und gewendelt ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10026909A DE10026909A1 (de) | 2000-05-31 | 2000-05-31 | Niederdruck-Quecksilber-Entladungslampe mit Aussenkolben |
| DE10026909 | 2000-05-31 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1160834A2 true EP1160834A2 (de) | 2001-12-05 |
| EP1160834A3 EP1160834A3 (de) | 2003-09-03 |
| EP1160834B1 EP1160834B1 (de) | 2008-10-08 |
Family
ID=7644181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01000191A Expired - Lifetime EP1160834B1 (de) | 2000-05-31 | 2001-05-29 | Niederdruck-Quecksilber-Entladungslampe mit Aussenkolben |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6888302B2 (de) |
| EP (1) | EP1160834B1 (de) |
| JP (1) | JP2002025502A (de) |
| CN (1) | CN1222981C (de) |
| DE (2) | DE10026909A1 (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004037738A1 (en) * | 2002-10-23 | 2004-05-06 | Koninklijke Philips Electronics N.V. | Low-pressure mercury vapor discharge lamp |
| EP1484783A3 (de) * | 2003-06-02 | 2011-01-12 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Entladungslampe mit zwei Leuchtstoffschichten |
| CN106252193A (zh) * | 2015-06-03 | 2016-12-21 | 秦军 | 一种照明灯具 |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100791564B1 (ko) * | 1999-12-21 | 2008-01-03 | 삼성에스디아이 주식회사 | 희토류 산화물이 코팅된 형광체 및 그의 제조방법 |
| DE10231257A1 (de) * | 2002-07-11 | 2004-01-22 | Philips Intellectual Property & Standards Gmbh | Bräunungsvorrichtung |
| US20040178734A1 (en) * | 2003-03-13 | 2004-09-16 | Yoshihisa Nagasaki | Fluorescent device, fluorescent lamp and glass composite |
| US20050179390A1 (en) * | 2003-04-04 | 2005-08-18 | Transworld Lighting, Inc. | Compact fluorescent lamp |
| US20050104501A1 (en) * | 2003-04-04 | 2005-05-19 | Transworld Lighting, Inc. | High efficiency gas discharge lamps |
| JP2005281341A (ja) * | 2004-03-26 | 2005-10-13 | Nec Lighting Ltd | 蛍光ランプ |
| JP4995413B2 (ja) * | 2004-05-31 | 2012-08-08 | パナソニック株式会社 | ランプ用ガラス組成物およびこれを用いたランプ |
| US7362049B2 (en) * | 2004-12-28 | 2008-04-22 | Osram Sylvania Inc. | Blue-enriched incandescent lamp |
| TW200642841A (en) * | 2005-06-08 | 2006-12-16 | Nanoforce Technologies Corp | After glow lighting film having UV filtering and explosion-proof |
| JP2009535772A (ja) * | 2006-05-01 | 2009-10-01 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 低圧放電ランプ |
| JP5027463B2 (ja) * | 2006-09-06 | 2012-09-19 | 株式会社日立製作所 | 画像表示装置 |
| US20090015129A1 (en) * | 2007-07-12 | 2009-01-15 | Noam Arye | Method and device for a compact fluorescent bulb |
| EP2105947B1 (de) * | 2008-02-29 | 2011-01-26 | Toshiba Lighting & Technology Corporation | Kompakt-Leuchtstofflampe und Beleuchtungsvorrichtung |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5778764A (en) * | 1980-11-04 | 1982-05-17 | Hitachi Ltd | Single-base type low pressure vapor discharge lamp |
| US4508993A (en) * | 1981-11-25 | 1985-04-02 | General Electric Company | Fluorescent lamp without ballast |
| DE3307780A1 (de) * | 1983-03-04 | 1984-09-06 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | Einseitig gesockelte niederdruckentladungslampe und verfahren zur herstellung |
| AR244867A1 (es) * | 1987-11-27 | 1993-11-30 | Hartai Julius | Panel luminoso. |
| US5105122A (en) * | 1989-08-18 | 1992-04-14 | U.S. Philips Corporation | Electrodeless low-pressure mercury vapor discharge lamp |
| GB9022343D0 (en) * | 1990-10-15 | 1990-11-28 | Emi Plc Thorn | Improvements in or relating to light sources |
| DE4312737A1 (de) * | 1993-04-20 | 1994-10-27 | Philips Patentverwaltung | Farbanzeigevorrichtung |
| DE4432035A1 (de) * | 1994-09-09 | 1996-03-14 | Philips Patentverwaltung | Beschichtungsverfahren für Lumineszenzpulver, Luminenzenzpulver und beschichteter Gegenstand |
| JPH09185951A (ja) * | 1995-09-29 | 1997-07-15 | Toshiba Lighting & Technol Corp | 蛍光ランプ装置および照明器具 |
| US5959405A (en) * | 1996-11-08 | 1999-09-28 | General Electric Company | Electrodeless fluorescent lamp |
| US5804914A (en) | 1996-11-27 | 1998-09-08 | Industrial Technology Research Institute | Fluorescent lamp having additional and interior fluorescent surfaces to increase luminosity |
| KR20000068107A (ko) * | 1997-06-11 | 2000-11-25 | 가노 다다오 | 형광램프, 전구형형광램프, 및 조명기구 |
| DE19737920A1 (de) | 1997-08-27 | 1999-03-04 | Walter Dipl Chem Dr Rer N Tews | Niederdruck-Gasentladungslampe mit erhöhter Lebensdauer |
| TW548681B (en) * | 1999-02-24 | 2003-08-21 | Koninkl Philips Electronics Nv | Low-pressure mercury vapor discharge lamp |
-
2000
- 2000-05-31 DE DE10026909A patent/DE10026909A1/de active Pending
-
2001
- 2001-05-24 US US09/864,132 patent/US6888302B2/en not_active Expired - Fee Related
- 2001-05-28 CN CNB011220880A patent/CN1222981C/zh not_active Expired - Fee Related
- 2001-05-29 JP JP2001161331A patent/JP2002025502A/ja not_active Withdrawn
- 2001-05-29 EP EP01000191A patent/EP1160834B1/de not_active Expired - Lifetime
- 2001-05-29 DE DE50114377T patent/DE50114377D1/de not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004037738A1 (en) * | 2002-10-23 | 2004-05-06 | Koninklijke Philips Electronics N.V. | Low-pressure mercury vapor discharge lamp |
| EP1484783A3 (de) * | 2003-06-02 | 2011-01-12 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Entladungslampe mit zwei Leuchtstoffschichten |
| CN106252193A (zh) * | 2015-06-03 | 2016-12-21 | 秦军 | 一种照明灯具 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1222981C (zh) | 2005-10-12 |
| EP1160834B1 (de) | 2008-10-08 |
| EP1160834A3 (de) | 2003-09-03 |
| US6888302B2 (en) | 2005-05-03 |
| DE50114377D1 (de) | 2008-11-20 |
| CN1326215A (zh) | 2001-12-12 |
| US20020027420A1 (en) | 2002-03-07 |
| JP2002025502A (ja) | 2002-01-25 |
| DE10026909A1 (de) | 2001-12-06 |
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