EP1873443A1 - Lampe fluorescente à ampoule - Google Patents

Lampe fluorescente à ampoule Download PDF

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Publication number
EP1873443A1
EP1873443A1 EP06731791A EP06731791A EP1873443A1 EP 1873443 A1 EP1873443 A1 EP 1873443A1 EP 06731791 A EP06731791 A EP 06731791A EP 06731791 A EP06731791 A EP 06731791A EP 1873443 A1 EP1873443 A1 EP 1873443A1
Authority
EP
European Patent Office
Prior art keywords
emitting tube
light
fluorescent lamp
tube
light emitting
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Withdrawn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
EP06731791A
Other languages
German (de)
English (en)
Other versions
EP1873443A4 (fr
Inventor
Yoshimasa Tobu Yokohama Bldg. No.3 TANABE (4F)
Takahiro Tobu Yokohama Bldg. No.3 KONOMOTO (4F)
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP1873443A1 publication Critical patent/EP1873443A1/fr
Publication of EP1873443A4 publication Critical patent/EP1873443A4/fr
Withdrawn legal-status Critical Current

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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
    • H01J61/33—Special shape of cross-section, e.g. for producing cool spot
    • 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

Definitions

  • the present invention relates to an electric bulb-shaped fluorescent lamp constituted in such a manner that, in said fluorescent lamp, mercury is enclosed in place of amalgam, whereby the luminous flux build-up characteristic is improved, and at the same time, the part which becomes the coolest point is formed at the tip end of the lamp in case the cap is positioned upwards, while, in case the cap is positioned downwards, the said part is formed at the tip end of a sealed pipe extended up to a point near the cap, so that, either at the base-up time when the cap is positioned upwards or at the base-down time when the cap is positioned downwards, a stable optical output can be obtained.
  • an electric bulb-shaped fluorescent lamp As a light source which can take the place of an incandescent lamp, an electric bulb-shaped fluorescent lamp which is high in lamp efficiency and long in useful time has been proposed; and, as such an electric bulb-shaped florescent lamp, there is known a fluorescent lamp provided with a double-helical shaped light-emitting tube.
  • Fig. 7 is a front view showing a sectional view of such a conventional electric bulb-shaped fluorescent lamp.
  • an electric bulb-shaped fluorescent lamp 1 comprises a double helix-shaped, light-emitting tube 2, a stabilizer 3 for lighting this light-emitting tube 2, a housing 4 accommodating the stabilizer 3 and having a cap 5, and an outer tubular globe 6 covering the light-emitting tube 2.
  • mercury is sealed up as a single substance (Amalgam is not used) for improvement of the luminous flux building-up characteristic, besides a mixture gas as a buffer gas.
  • the light-emitting tube 2 has its glass tube end inserted into a plate 8 and fixed to said plate 8 by means of an adhesive such as, e.g. silicon.
  • the reason for providing the projecting portion 2a is that, as a result of providing the projecting portion 2a, the space within the projecting portion 2a gets off the track of the electrons flowing between the electrodes, as a result of which the temperature (the coolest-point temperature) within the projection 2a is further lowered.
  • the reason why the light-emitting tube 2 and the outer tube globe 6 are thermally coupled together by means of a thermally conductive medium 15 is that, when the electric bulb-shaped fluorescent lamp 1 is lit to raise the temperature of the light-emitting tube 2, the resulting heat is transmitted to the outer tube globe 6 through the thermally conductive medium 15, in which case the rise in the temperature of the light-emitting tube 2, particularly the rise in the temperature of the coolest portion formed in the lowermost end portion of the light-emitting tube 2 can be suppressed.
  • Patent Literature 1 JP Patent Application Disclosure No. 2004-87397 .
  • the coolest point of the light-emitting tube is formed in the top portion of the light-emitting tube, so that, in the state in which the light-emitting tube is mounted with its cap placed at the upside thereof, the coolest-point temperature is low, and a stable output can be obtained, but, to the contrary, in the state in which the light-emitting tube is mounted with the cap held downwards, the coolest-point temperature rises, and thus, a stable output cannot be obtained, which has been a problem.
  • the present invention has been made in order to give a solution to the above-mentioned problem, and it is the object of the invention to provide an electric bulb-shaped fluorescent lamp constituted in such a manner that, without regard to whether the light-emitting tube is directed upwards or downwards, the temperature at the coolest point can be decreased, and, during the normal lighting-up time, a stable output can be assured.
  • the electric bulb-shaped fluorescent lamp which comprises a light-emitting tube, a stabilizer for lighting said light-emitting tube, a plate which holds said light-emitting tube at one side thereof, while, at the other side thereof, a stabilizer is mounted, a housing which accommodates said stabilizer therein and has a cap, and an outer tube globe covering said light-emitting tube, wherein mercury is enclosed in said electric bulb-shaped fluorescent lamp, characterized in that there are provided a projecting portion and an exhaust tube, said projecting portion being formed at the tip end, on the side opposite to the cap of said light-emitting tube, said projecting portion becoming the coolest point when the light-emitting tube is lit up in a state mounted with said cap positioned upwards, while said exhaust tube being provided in order to exhaust the interior of said light-emitting tube and extending from the light-emitting tube through said plate into the interior of said housing, wherein the tip end of said exhaust tube becomes the coolest point when said light-emitting tube is
  • the electric bulb-shaped fluorescent lamp according to the present invention is constructed as mentioned above, due to which the temperature at the coolest point thereof can be lowered, and a stable output can be obtained at the time of ordinary lighting thereof.
  • Figs. 1 to 5 show Embodiment 1 of the present invention, of which Fig. 1 is a front view of the electric bulb-shaped fluorescent lamp 1, Fig. 2 is a plan view of the electric bulb-shaped fluorescent lamp 1, Fig. 3 is a front view showing a section of the electric bulb-shaped fluorescent lamp 1, Fig. 4 is a front view showing the internal structure of the electric bulb-shaped fluorescent lamp 1, and Fig. 5 is a plan view showing the internal structure of the electric bulb-shaped fluorescent lamp 1.
  • the electric lamp-shaped fluorescent lamp 1 comprises a double spiral-shaped light-emitting tube 2, a stabilizer (lighting circuit) 3 for lighting this light-emitting tube 2, a housing 4 accommodating the stabilizer 3 therein and has a cap 5, and an outer tube globe 6 covering the light-emitting tube 2.
  • the end portion of the light-emitting tube 2 is inserted into the plate 8 and fixed to it by means of an adhesive such as, e.g. silicon, as shown in Fig. 3.
  • an adhesive such as, e.g. silicon, as shown in Fig. 3.
  • the stabilizer 3 comprising various electronic parts is mounted on the side of the plate 8 which side is opposite to the light-emitting tube 2.
  • a projecting portion 2a is formed by swelling out a glass tube.
  • the projecting portion 2a is contacted with the lower end portion 6a of the outer tube globe 6 and thermally coupled to it.
  • the reason for providing the projecting portion 2a is that, by forming this projecting portion 2a, the space in the projecting portion 2a comes off from the path of the electrons which flow between the electrodes, whereby the temperature (the temperature at the coolest point) in the projecting portion 2a is further lowered.
  • an exhaust tube 7 for exhausting the air in the light-emitting tube 2 extends through a plate 8 as far as the upper portion of the space in which the stabilizer 3 in the housing 4 is accommodated. This is aimed at separating the tip end 7a of the exhaust tube 7 from the light-emitting tube 2 which becomes high in temperature when said light-emitting tube 2 emits light.
  • the electric bulb-shaped fluorescent lamp 1 is mounted in the state in which the cap 5 is positioned above. If, in this case, the electric bulb-shaped fluorescent lamp 1 is turned on and the temperature in the light-emitting tube 2 rises, then the heat thus caused is transmitted from the projecting portion 2a directly to the outer tubular globe 6, as a result of which the rise in temperature of the light-emitting tube 2, particularly, the rise in temperature at the coolest point formed in the protruding portion 2a at the lower end portion of the light-emitting tube 2 is suppressed. Accordingly, the light-emitting tube 2 can assure a stabilized output.
  • the tip end 7a of the exhaust tube 7 is positioned apart from the light-emitting tube 2 and extends as far as the vicinity of the low-temperature stabilizer 3, so that, even if the electric bulb-shaped fluorescent lamp 1 is lit to raise the temperature of the light-emitting pipe 2, the tip end 7a of the exhaust tube 7 is lower in temperature than the other portions of the light-emitting tube 2, and thus, the coolest point is formed there.
  • the mercury vapor pressure within the light-emitting tube 2 is determined by the temperature thereof; and thus, an appropriate mercury vapor pressure results, whereby a stable output can be obtained.
  • the lower end portion (This lower end portion is the protruding portion 2a in the former case, but it is the leading end 7a of the exhaust tube 7 in the latter case) of the light-emitting tube 2 becomes the coolest point, and thus, a stabilized output can always be obtained.
  • Fig. 6 shows Embodiment 2 of the present invention; more specifically, said Fig. 6 is a front sectional view of the electric bulb-type fluorescent lamp 1.
  • the projecting portion 2a is contacted with the outer tube globe 6, whereby the projecting portion 2a and the outer tube globe 6 are thermally coupled together, but it is also permissible to provide an opening 6b in that portion of the outer tubular globe 6 which is positioned in the neighborhood of the projecting portion 2a, so that the projecting portion 2a is cooled by the air flowing into the outer tubular globe 6 from the outside to thereby suppress the rise of the temperature in the coolest point location.
  • the light-emitting tube 2 is alike of a double spiral type, but the present invention is not limited to such type. That is, the light-emitting tube 2 may be any other type such as a bent-shaped type or the like.
  • the tip end 7a of the exhaust tube 7 is positioned in the upper portion of the space in which the stabilizer 3 of the housing 4 is accommodated, but the tip end 7a of the exhaust tube 7 may be positioned anywhere within the space which accommodates the stabilizer 3 of the housing 4.

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
EP06731791A 2005-04-19 2006-04-13 Lampe fluorescente à ampoule Withdrawn EP1873443A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005120540A JP2006302589A (ja) 2005-04-19 2005-04-19 電球形蛍光ランプ
PCT/JP2006/307855 WO2006115076A1 (fr) 2005-04-19 2006-04-13 Lampe fluorescente à ampoule

Publications (2)

Publication Number Publication Date
EP1873443A1 true EP1873443A1 (fr) 2008-01-02
EP1873443A4 EP1873443A4 (fr) 2009-06-17

Family

ID=37214699

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06731791A Withdrawn EP1873443A4 (fr) 2005-04-19 2006-04-13 Lampe fluorescente à ampoule

Country Status (3)

Country Link
EP (1) EP1873443A4 (fr)
JP (1) JP2006302589A (fr)
WO (1) WO2006115076A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009115373A1 (fr) * 2008-03-20 2009-09-24 Osram Gesellschaft mit beschränkter Haftung Enceinte à décharge pour une lampe à décharge et lampe à décharge

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5150973B2 (ja) * 2008-04-01 2013-02-27 Ｎｅｃライティング株式会社 蛍光ランプ
JP2010015828A (ja) * 2008-07-03 2010-01-21 Nec Lighting Ltd 安定器内蔵蛍光ランプおよび照明器具
CN102405508A (zh) * 2009-04-20 2012-04-04 松下电器产业株式会社 发光管、放电灯和照明装置
JP4774448B2 (ja) * 2009-04-20 2011-09-14 パナソニック株式会社 発光管及び放電ランプ
JP5626846B2 (ja) * 2010-04-16 2014-11-19 Ｎｅｃライティング株式会社 電球型蛍光ランプおよび照明器具
CN103531433A (zh) * 2012-07-01 2014-01-22 盐城市九龙照明电器有限公司 一种马路用大功率节能荧光灯

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5769530A (en) * 1996-08-15 1998-06-23 General Electric Company Compact fluorescent lamp with extended legs for providing a cold spot
JP2004146331A (ja) * 2002-07-16 2004-05-20 Toshiba Lighting & Technology Corp 電球形蛍光ランプおよび照明器具
EP1469506A2 (fr) * 2003-04-16 2004-10-20 General Electric Company Procédé pour la fabrication d'un point froid dans une lampe fluorescente et fabrication d'une telle lampe
US20040207326A1 (en) * 2003-04-16 2004-10-21 Janos Bajnok Method for forming cold spot region and discharge lamp with such cold spot region
US20040232815A1 (en) * 2003-02-28 2004-11-25 Yasushige Tomiyoshi Compact self-ballasted fluorescent lamp with improved rising characteristics
US20050265018A1 (en) * 2004-05-07 2005-12-01 Toshiba Lighting & Technology Corporation Compact fluorescent lamp and luminaire using the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5727557A (en) * 1980-07-28 1982-02-13 Toshiba Corp Fluorescent lamp device
JPS595815U (ja) * 1982-07-02 1984-01-14 株式会社東芝 けい光ランプ装置
JPS6163759U (fr) * 1984-09-29 1986-04-30
JPH0313928Y2 (fr) * 1989-02-01 1991-03-28

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5769530A (en) * 1996-08-15 1998-06-23 General Electric Company Compact fluorescent lamp with extended legs for providing a cold spot
JP2004146331A (ja) * 2002-07-16 2004-05-20 Toshiba Lighting & Technology Corp 電球形蛍光ランプおよび照明器具
US20040232815A1 (en) * 2003-02-28 2004-11-25 Yasushige Tomiyoshi Compact self-ballasted fluorescent lamp with improved rising characteristics
EP1469506A2 (fr) * 2003-04-16 2004-10-20 General Electric Company Procédé pour la fabrication d'un point froid dans une lampe fluorescente et fabrication d'une telle lampe
US20040207326A1 (en) * 2003-04-16 2004-10-21 Janos Bajnok Method for forming cold spot region and discharge lamp with such cold spot region
US20050265018A1 (en) * 2004-05-07 2005-12-01 Toshiba Lighting & Technology Corporation Compact fluorescent lamp and luminaire using the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2006115076A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009115373A1 (fr) * 2008-03-20 2009-09-24 Osram Gesellschaft mit beschränkter Haftung Enceinte à décharge pour une lampe à décharge et lampe à décharge

Also Published As

Publication number Publication date
WO2006115076A1 (fr) 2006-11-02
JP2006302589A (ja) 2006-11-02
EP1873443A4 (fr) 2009-06-17

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Inventor name: KONOMOTO, TAKAHIRO,C/O OSRAM MELCO LTD.

Inventor name: TANABE, YOSHIMASA,TOBU YOKOHAMA BLDG. NO.3 (4F)

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