EP0806792A2 - Lampe fluorescente compacte - Google Patents

Lampe fluorescente compacte Download PDF

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Publication number
EP0806792A2
EP0806792A2 EP97106859A EP97106859A EP0806792A2 EP 0806792 A2 EP0806792 A2 EP 0806792A2 EP 97106859 A EP97106859 A EP 97106859A EP 97106859 A EP97106859 A EP 97106859A EP 0806792 A2 EP0806792 A2 EP 0806792A2
Authority
EP
European Patent Office
Prior art keywords
vessel
phosphor
fluorescent lamp
compact fluorescent
lamp according
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.)
Withdrawn
Application number
EP97106859A
Other languages
German (de)
English (en)
Other versions
EP0806792A3 (fr
Inventor
Theodor Dipl.-Ing. Meyer
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.)
SLI Lichtsysteme GmbH
Original Assignee
SLI Lichtsysteme GmbH
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
Priority claimed from DE19633768A external-priority patent/DE19633768A1/de
Application filed by SLI Lichtsysteme GmbH filed Critical SLI Lichtsysteme GmbH
Publication of EP0806792A2 publication Critical patent/EP0806792A2/fr
Publication of EP0806792A3 publication Critical patent/EP0806792A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/02Details
    • H01J61/30Vessels; Containers
    • H01J61/32Special longitudinal shape, e.g. for advertising purposes
    • H01J61/327"Compact"-lamps, i.e. lamps having a folded discharge path

Definitions

  • the invention relates to a compact fluorescent lamp with a vacuum-tightly closed discharge vessel, which has at least two vessel parts coated with fluorescent material on its inner wall, which are connected to one another at or near their free ends by a connecting tube or the like, the discharge vessel being provided between two electrodes the discharge-side ends of two vessel parts are arranged, a discharge path is formed during operation of the lamp, which is curved at at least one point.
  • Such lamps are generally known in one-sided base form in different versions, each with different base / socket systems (e.g. G23, G24, 2G7, 2G11) and as incandescent lamp substitutes with screw or bayonet bases (e.g. E14, E27, B15, B22).
  • base / socket systems e.g. G23, G24, 2G7, 2G11
  • incandescent lamp substitutes with screw or bayonet bases
  • the inner walls of the discharge vessel are coated with a phosphor that emits in the visible part of the spectrum.
  • phosphors are also used that only emit in some areas of the spectrum, e.g. UV, red, green, blue.
  • the known lamps of this type are mostly made up of vessel parts that form discharge tubes made of glass, quartz or the like, regardless of the number of through Discharge tubes connected to one another only use a single luminescent substance or a single luminescent substance mixture, with which the inner walls of the vessel parts and optionally also of the connecting tube are coated. It follows from this that such a lamp also emits only a certain spectrum, the spectral energy distribution of which is determined by the phosphor or the phosphor mixture used.
  • the object on which the invention is based is seen in creating a compact fluorescent lamp of the type described at the outset, which results in improved color rendering and luminous efficacy and, in particular in terms of its spectral energy distribution, has a variability which has hitherto been achieved only with the simultaneous use of two or more lamps.
  • the superimposition of at least two sub-spectra advantageously produces an overall spectrum which, as an individual spectrum, would not be possible or would be very difficult to achieve.
  • the reasons for this lie in the nature of the phosphors to be used. Different particles, size distributions, specific weights, surface compositions, surface structures can on the one hand lead to undesired segregation and agglomeration effects during coating and on the other hand to different UV absorption.
  • a linear addition of the partial properties of two or more phosphors by mixing is not possible, which must lead to difficulties in setting a desired spectrum, since the properties of individual phosphors that are otherwise present are not fully developed in their mixture.
  • the lamp according to the invention is advantageous in that the emission bands of the spectrum of one phosphor or phosphor mixture can be placed in the emission gaps of the other spectrum of the other phosphor or phosphor mixture so that there is an overall continuum in which the color rendering index is bigger than in each of the individual spectra, and in which the achievable luminous efficacy (luminous flux ⁇ / W) is higher than in the case of a lamp with only one phosphor coating with an equally high color rendering index.
  • FIG. 1 The embodiment of a compact fluorescent lamp shown in FIG. 1 has a discharge vessel 2 which is closed in a vacuum-tight manner and is provided with a base 1 and which has at least two vessel parts 7 arranged with their supply-side ends 3 and 4 in the base 1 and coated on the inside wall with phosphor 5 and 6, 8 has. It goes without saying that there are also baseless compact fluorescent lamps.
  • these vessel parts 7 and 8 are connected to one another close to their free ends 9 and 10 by a connecting tube 11.
  • a discharge path 14 (indicated by dashed lines) is formed between two electrodes 12 and 13, which are arranged in the base-side holder ends 3 and 4 of the two vessel parts 7 and 8, which is curved in the region of the connecting tube 11.
  • At least one of the vessel parts 7, 8 has, according to the invention, been coated with a different phosphor 5 with different spectral properties than the phosphor 6 or the phosphor mixture in the other vessel part 8 before the connection is made.
  • the vessel parts 7, 8 connected to each other by means of a connecting tube 11 forming the connection in the form of a fused piece of glass tube. Furthermore, the vessel parts 7, 8 are discharge tubes which run parallel to one another, specifically in a straight line.
  • FIGS. 2 to 4 the spectral energy distributions of three in their dimensions, their structure and in their electrical values of the same lamps are diagrammatically represented in FIGS. 2 to 4, which thus essentially correspond to the lamp according to FIG. 1 except for the fluorescent equipment.
  • the two lamps evaluated in FIGS. 2 and 3 are, on the one hand, one that is exclusively coated with a three-band phosphor and, on the other hand, one that is only coated with a UV phosphor.
  • the lamp evaluated in the diagram according to FIG. 4, on the other hand, is one according to the invention using both of the above-mentioned phosphors, wherein it must be taken into account that the spectral characteristics of the lamp according to FIG.
  • the vessel parts 7, 8 do not necessarily have to be connected to one another by means of a piece of glass tube, they also do not necessarily have to be discharge tubes which are rectilinear. They don't even have to be parallel to each other. Rather, they can also describe arches and corners, vary in diameter over their length and have different distances from one another over their length.
  • the connecting tube 11 can also be shaped differently and can even form a third vessel part, bent in a U-shape or else shaped, which is coated on the inside with a third phosphor or phosphor mixture different from the two phosphors 5 and 6 in the vessel parts 7 and 8 is.
  • a connecting pipe 11 can also simply be melted on top at the free ends 9 and 10 of two vessel parts 7 and 8.
  • the two vessel parts 7 and 8 can also be bent back in a U-shape so that their free ends are in the region of the base 1, such that the connecting tube 11 in a U-shape (not shown) also in the base region connects the two free ends 9 and 10 then arranged there.
  • an unlimited number of lamp shapes is possible, made from different numbers n of vessel parts, which are continuously connected to one another by means of a number n-1 of connecting tubes to form a single discharge path 14.
  • one or more additional supports may have to be provided on or in the base for additional vessel parts in order to ensure the mechanical stability of the respective compact fluorescent lamp.
  • this is only a matter of adapting the base in question, which is left to the specialist in individual cases.
  • the third and each further vessel part does not necessarily have to have a different phosphor. Rather, it is possible to coat two or even more vessel parts as discharge path extensions with one and the same phosphor, as long as at least one vessel part of the respective lamp is present which has a different phosphor.
  • the compact fluorescent lamp according to the invention was designed in such a way that the spectral energy of the individual parts of the vessel or glass tube pieces in one or more 5 nm-wide partial region (s) between 200 and 800 nm is at least 20% of the energy emitted in the same region different vessel part or glass tube piece of the same lamp.
  • At least one of the vessel parts 7, 8 can be coated with a non-emitting reflection material, for example with ⁇ -Al 2 O 3 , the reflection material forming a reflection layer 15 which, in the embodiment shown in FIG. 5, between the glass vessel part 8 and the phosphor coating 6 is applied and can extend over an angle ⁇ of approximately 120 ° to approximately 220 ° with respect to the longitudinal axis of the respective vessel part, depending on the desired radiation pattern of the respective embodiment. In the embodiment shown in FIG. 5, ⁇ is slightly less than 180 °.
  • Such a reflector coating has a positive effect in two respects: On the one hand, the reflection of stimulating radiation (254 nm Hg line) reduces the absorption of precisely this radiation in the glass and thus provides more stimulating energy for the phosphor particles. On the other hand, the intensity of the radiation that passes through the remaining window, which is not provided with the reflector coating (which therefore extends over 360 ° minus ⁇ ), is significantly increased in comparison to the lamp without a reflector with the same phosphor coating.
  • the tube glass usually used for low-pressure gas discharge lamps is a soda-lime glass.
  • Different chemical compositions of the same (in particular concentration of sub-group elements) result in different physical properties, for example in different transmission values.
  • radiation energy is absorbed in the wavelength ranges in which the quantum energy of the radiation is sufficient to excite the electrons bound in the glass network, which is preferably given by UV radiation in the range from 200 nm to 400 nm.
  • UV radiation in the range from 200 nm to 400 nm.
  • the spectral transmission values in these wavelength ranges can differ greatly depending on the glass composition.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
EP97106859A 1996-05-08 1997-04-25 Lampe fluorescente compacte Withdrawn EP0806792A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19618362 1996-05-08
DE19618362 1996-05-08
DE19633768A DE19633768A1 (de) 1996-05-08 1996-08-22 Kompaktleuchtstofflampe
DE19633768 1996-08-22

Publications (2)

Publication Number Publication Date
EP0806792A2 true EP0806792A2 (fr) 1997-11-12
EP0806792A3 EP0806792A3 (fr) 1998-03-11

Family

ID=26025487

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97106859A Withdrawn EP0806792A3 (fr) 1996-05-08 1997-04-25 Lampe fluorescente compacte

Country Status (1)

Country Link
EP (1) EP0806792A3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003105185A1 (fr) * 2002-06-06 2003-12-18 Koninklijke Philips Electronics N.V. Lampe a vapeur de mercure basse pression
EP1441383A1 (fr) * 2003-01-21 2004-07-28 Osram Sylvania Inc. Mélange de matière luminescente emittant UV et lampe de bronzage contentant le mélange
WO2005041622A1 (fr) 2003-10-24 2005-05-06 Koninklijke Philips Electronics N.V. Ballast

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5564359A (en) * 1978-11-08 1980-05-15 Hitachi Ltd Fluorescent lamp
JPS63134263A (ja) * 1986-11-27 1988-06-06 Canon Inc 光照射装置及び該光照射装置を用いた記録装置
FR2648617A1 (fr) * 1989-06-17 1990-12-21 Toshiba Lighting Technology Co Lampe fluorescente
EP0658921A1 (fr) * 1993-12-17 1995-06-21 Koninklijke Philips Electronics N.V. Lampe à décharge au mercure basse pression
JPH0896761A (ja) * 1994-09-21 1996-04-12 Matsushita Electric Ind Co Ltd 照明装置
JPH0896762A (ja) * 1994-09-21 1996-04-12 Matsushita Electric Ind Co Ltd 照明装置
JPH0896760A (ja) * 1994-09-21 1996-04-12 Matsushita Electric Ind Co Ltd 照明装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5564359A (en) * 1978-11-08 1980-05-15 Hitachi Ltd Fluorescent lamp
JPS63134263A (ja) * 1986-11-27 1988-06-06 Canon Inc 光照射装置及び該光照射装置を用いた記録装置
FR2648617A1 (fr) * 1989-06-17 1990-12-21 Toshiba Lighting Technology Co Lampe fluorescente
EP0658921A1 (fr) * 1993-12-17 1995-06-21 Koninklijke Philips Electronics N.V. Lampe à décharge au mercure basse pression
JPH0896761A (ja) * 1994-09-21 1996-04-12 Matsushita Electric Ind Co Ltd 照明装置
JPH0896762A (ja) * 1994-09-21 1996-04-12 Matsushita Electric Ind Co Ltd 照明装置
JPH0896760A (ja) * 1994-09-21 1996-04-12 Matsushita Electric Ind Co Ltd 照明装置

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 004, no. 104 (E-019), 25.Juli 1980 & JP 55 064359 A (HITACHI LTD), 15.Mai 1980, *
PATENT ABSTRACTS OF JAPAN vol. 012, no. 381 (M-752), 12.Oktober 1988 & JP 63 134263 A (CANON INC), 6.Juni 1988, *
PATENT ABSTRACTS OF JAPAN vol. 096, no. 008, 30.August 1996 & JP 08 096760 A (MATSUSHITA ELECTRIC IND CO LTD), 12.April 1996, *
PATENT ABSTRACTS OF JAPAN vol. 096, no. 008, 30.August 1996 & JP 08 096761 A (MATSUSHITA ELECTRIC IND CO LTD), 12.April 1996, *
PATENT ABSTRACTS OF JAPAN vol. 096, no. 008, 30.August 1996 & JP 08 096762 A (MATSUSHITA ELECTRIC IND CO LTD), 12.April 1996, *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003105185A1 (fr) * 2002-06-06 2003-12-18 Koninklijke Philips Electronics N.V. Lampe a vapeur de mercure basse pression
EP1441383A1 (fr) * 2003-01-21 2004-07-28 Osram Sylvania Inc. Mélange de matière luminescente emittant UV et lampe de bronzage contentant le mélange
EP1571692A2 (fr) * 2003-01-21 2005-09-07 Osram Sylvania Inc. Mélange de matière luminescente emittant UV et lampe de bronzage contentant le mélange
EP1588395A2 (fr) * 2003-01-21 2005-10-26 Osram Sylvania Inc. Melange de phosphore emettant des rayons uv et lampe de bronzage contenant ce melange
US6984931B2 (en) 2003-01-21 2006-01-10 Osram Sylvania Inc. UV-emitting phosphor blend and tanning lamp containing same
EP1571692A3 (fr) * 2003-01-21 2006-10-04 Osram Sylvania Inc. Mélange de matière luminescente emittant UV et lampe de bronzage contentant le mélange
US7122952B2 (en) 2003-01-21 2006-10-17 Osram Sylvania Inc. UV-emitting phosphor blend and tanning lamp containing same
EP1588395A4 (fr) * 2003-01-21 2008-08-13 Osram Sylvania Inc Melange de phosphore emettant des rayons uv et lampe de bronzage contenant ce melange
WO2005041622A1 (fr) 2003-10-24 2005-05-06 Koninklijke Philips Electronics N.V. Ballast

Also Published As

Publication number Publication date
EP0806792A3 (fr) 1998-03-11

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