WO2001088952A1 - Lampe a decharge sans electrode - Google Patents

Lampe a decharge sans electrode Download PDF

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Publication number
WO2001088952A1
WO2001088952A1 PCT/JP2001/003969 JP0103969W WO0188952A1 WO 2001088952 A1 WO2001088952 A1 WO 2001088952A1 JP 0103969 W JP0103969 W JP 0103969W WO 0188952 A1 WO0188952 A1 WO 0188952A1
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WO
WIPO (PCT)
Prior art keywords
envelope
coil
lamp
discharge lamp
electrodeless discharge
Prior art date
Application number
PCT/JP2001/003969
Other languages
English (en)
Japanese (ja)
Inventor
Robert Chandler
Oleg Popov
Jakob Maya
Edward Shapiro
Original Assignee
Matsushita Electric Industrial Co., Ltd.
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 Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Publication of WO2001088952A1 publication Critical patent/WO2001088952A1/fr

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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
    • 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
    • H01J65/048—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 an excitation coil

Definitions

  • the present invention relates to air lamps, and more particularly to electrodeless fluorescent lamps that operate at frequencies between 50 kHz and 1 MHz and at low or intermediate pressures.
  • Background technology ''
  • Electrodeless fluorescent lamps operating at frequencies in the range of tens of kHz to tens of MHz have a longer life than conventional fluorescent lamps having internal electrodes and heating filaments.
  • General Electric Corp. introduced an electrodeless miniature fluorescent lamp mainly for indoor use (“Genura"). This lamp has a light output of 1100 lumens at a total power of 23 W and a long life of 15,000 hours.
  • the lamp In order to provide high lamp light output at low and high ambient temperatures, the lamp must be close to approximately 6 mTorr (approximately 798 mPa) within a wide range of amalgam, from about 70 ° C to about 120 ° C. Utilize bismuth amalgam to maintain optimal mercury vapor pressure.
  • the disadvantage of this lamp is that the rise time of the lamp, the time required to reach 50% of the lamp's maximum light output, is relatively long.
  • the rise time of the G enura lamp is longer than 80 seconds.
  • the longer rise time is due to the relatively long time (about 1 minute) required to heat the amalgam to the required temperature of about 70 ° C.
  • the supplemental amalgam was placed in a flag (see, for example, Maya et al., US Pat. No. 5,698,951; Cocoma et al., US Pat. No. 5,783,912, Borowiec).
  • U.S. Pat. No. 5,841,229 or the vacuum side of a concave cavity wall heated directly by a discharge plasma (Wah rmby et al., U.S. Pat. No. 5,767,617; Forsdyke et al.).
  • U.S. Pat. No. 5,789,855 using more than one amalgam did not reduce the rise time to less than 80 seconds.
  • the lamp operates stably on the surface of the lamp. No point could have a temperature below 70 ° C.
  • the pressure of the mercury droplet during stable operation was higher than 6 mTorr, and the stable light output was as low as about 75 to 80% of the maximum light output.
  • the objective is to design a compact electrodeless fluorescent lamp that produces visible light with a maximum output of 650 lumens.
  • Another object of the present invention is to provide a 100 W power supply with much higher efficiency and a 5 to 10 times longer lifespan than an incandescent light bulb while having dimensions comparable to an incandescent light bulb.
  • An object of the present invention is to provide a compact fluorescent lamp that can directly replace an incandescent light bulb. Disclosure of the invention
  • An electrodeless discharge lamp includes an envelope filled with a discharge gas, a coil that generates an electromagnetic field in the envelope, and a protrusion formed on the envelope and protruding toward the outside of the envelope.
  • the tube wall load is 0.05 WZ cm 2 or more, whereby the object is achieved.
  • the envelope may have a concave cavity, and the coil may be disposed inside the concave cavity.
  • the electrodeless discharge lamp further includes a ferrite core, and the coil includes: It may be wound around a ferrite core.
  • the height of the ridge may be less than 7 mm.
  • Another electrodeless discharge lamp of the present invention includes an envelope filled with a discharge gas, a coil that generates an electromagnetic field in the envelope, and a protrusion formed on the envelope and protruding toward the outside of the envelope.
  • the coil has an inductive coupling power frequency of 50 kHz or more and 1 MHz or less, thereby achieving the above object.
  • the tube wall load of the electrodeless discharge lamp may be 0.05 WZ cm 2 or more.
  • the envelope may have a concave cavity, and the coil may be disposed inside the concave cavity.
  • the electrodeless discharge lamp may further include a ferrite core, and the coil may be wound around the ferrite core.
  • It may be 0.1 mm or more and 2 mm or less.
  • the height of the ridge may be less than 7 mm.
  • Another electrodeless discharge lamp includes an envelope filled with a discharge gas therein, and a coil that generates an electromagnetic field in the envelope, wherein the envelope has a side wall and a top, and the side wall.
  • the radius of curvature of the corner formed by the top and the top is 10 mm or less, thereby achieving the above object.
  • the present invention encompasses an electrodeless fluorescent lamp including a glass envelope containing a fill of an inert gas containing mercury vapor.
  • the top of the envelope has a small thin glass dome that acts as the cold spot for mercury vapor when the lamp is lit "base up”.
  • Glass “skirt” with a gap of a few mm Sealed to the bottom edge of the force envelope. This glass “skirt” It is likely to provide the coldest point when it lights up with its “down” position.
  • a ferrite core and a coil formed from the Ritzwire are placed in the recess cavity.
  • the cooling structure includes a metal (aluminum, copper) tube disposed inside the magnetic core and a ceramic enclosure adhered to the metal tube and the Edison socket with a material having high thermal conductivity.
  • a power driver and matching circuit are located inside the ceramic enclosure and receive power from the main power supply via an Edison socket.
  • FIG. 1 is a cross-sectional view of a first embodiment of the present invention, showing an electrodeless compact fluorescent lamp that operates in a base-up position and a base-down position.
  • FIG. 2 is a view showing an electrodeless fluorescent lamp which is a variation of Embodiment 1 of the present invention in which a skirt is removed for a simpler manufacturing process.
  • 3A to 3C are diagrams showing a modification of a thin glass dome on a spherical envelop in which the coldest point for controlling the mercury vapor pressure is formed.
  • 4A to 4D show an annular ridge scart that can be placed on the top, bottom, or sides of the glass envelope.
  • 5A to 5C are schematic diagrams of modified examples of the coldest corner formed by the top and side walls of the envelope that can be used in the electrodeless fluorescent lamp according to the second embodiment of the present invention. .
  • FIG. 1 shows an electrodeless fluorescent lamp 100 according to Embodiment 1 of the present invention.
  • a glass spherical envelope 1 has a recessed cavity 2 and an exhaust capillary 3 located on its axis inside the cavity 2.
  • an inert filling gas eg, argon, krypton, etc.
  • mercury vapor is sealed inside Envelope 1
  • the inert fill gas is at a pressure of 50 mT orr to 5 T orr (665 OmPa to 665 Pa).
  • the diameter and height of the envelope are 5 O mm and 65 mm, respectively.
  • the concave cavity 2 is recessed from the outside of the envelope 1 toward the inside.
  • the mercury pressure in envelope 1 is maintained by the temperature of the coldest spot on the envelope surface. After several hours of operation, mercury drops condense to this cold spot.
  • the coldest point lies in the gap formed by the inner wall 5 and the outer wall 6 of the skirt 4 (first ridge). After several hours of lamp operation, mercury vapor condenses at the bottom of the gap, which becomes the coldest point of the envelope and controls the mercury vapor pressure.
  • the length of the skirt is 25 mm and its inner and outer diameters are 40 mm and 45 mm, respectively.
  • the dome (second ridge) 7 is provided on a spherical top as shown in FIG.
  • the height h of the dome 7 is 5 mm
  • the diameter d at the bottom of the dome 7 is about 9 mm
  • the thickness of the glass is about 0.3 mm.
  • the present inventors have found that when the diameter at the bottom of the dome 7 is smaller than about 8 mm, the effect of improving the light output is reduced. This is because if the diameter at the bottom of the dome 7 is small, it becomes extremely difficult for the discharge gas in the envelope 1 to enter the dome 7 by convection, and as a result, the function of controlling the mercury vapor pressure This is due to a decrease in On the contrary, the present inventors have also found that even when the diameter at the bottom of the dome 7 is extremely large, the effect of improving the light output is still small. This is because the discharge gas intrusion due to convection becomes excessive, and the heat inflow thereby increases, so that the temperature at the coldest point rises. Dome 7 has a bottom diameter of 15 mm If it becomes larger, the effect of improving the light output becomes smaller.
  • the raised portion is a portion where the curvature of the envelope 1 changes from negative to positive to negative along at least one cross section of the envelope 1, and at that portion, the envelope 1
  • this is where the electrodeless fluorescent lamp is in contact with the outside.
  • the curvature of the envelope 1 is positive when it is convex toward the outside of the envelope 1 and negative when it is convex toward the inside of the envelope 1.
  • the curvature of the envelope 1 changes from negative (part 101) to positive (part 102) to negative (part 103).
  • This change in the curvature of Envelope 1 means that the ridge protrudes outward from Envelope 1.
  • the contact area between the envelope 1 and the surrounding atmosphere is increased as compared with the case where no raised portion is provided. This lowers the temperature of the ridge and the temperature at the coldest point is low enough to provide the required stable light output.
  • a coil 8 formed from a plurality of strand wires (Litz wires) is wound around a ferrite core 9.
  • the wire has 66 insulated coated strands, each of which is # 40 gauge.
  • the coil has two layers with a total of 65 turns.
  • the hollow I-shaped ferrite core 9 is formed from a MnZn material (see US Patent Application No. 09-3, filed May 3, 1999 by Chamber 1 ain et al.). No. 0,3,951, and U.S. Patent Application No. 0,934,5,960 filed on Jan. 9, 1999 by C handler et al. It is located in the recessed cavity 2).
  • the ferrite core has a diameter of 15 mm and a length of 55 mm.
  • the inductance of the coil / ferrite core is larger than the inductance of the coil 8 alone. Become. Thereby, the luminous efficiency of the electrodeless fluorescent lamp 100 is increased.
  • the coil 8 and the ferrite core 9 are maintained at a temperature below the Curie point ( ⁇ 220 ° C) by the cooling structure including the metal tube 10 and the ceramic enclosure 11.
  • Tube 10 is formed of metal (copper) having high thermal conductivity and low induced power loss.
  • the ceramic enclosure 11 is formed from several alumina parts integrally bonded with a material having high thermal conductivity. The ceramic enclosure 11 may also be formed from a single piece.
  • the ceramic enclosure 11 is bonded to a copper plate 12 welded to an Edison socket 13. In a preferred embodiment, the thickness of the wall of the ceramic enclosure is 4 mm.
  • Two ceramic spacers 14 and 15 are inserted inside the ferrite core 9 to prevent the tube 10 from extending outside the core, thereby reducing power loss in the copper tube 10.
  • the length of the ceramic spacers 14 and 15 is 5 mm.
  • a matching circuit and driver (not shown) are located in the ceramic enclosure 11 on the PC board 16. The position of the PC pod 16 is selected so that the temperature of the driver components does not exceed 100 ° C.
  • the main power supply is connected to the driver via Edison socket 13.
  • the inner surface of the envelope 1 including the inner surface of the skirt 4 is covered with a protective coating 17 and a phosphor coating 18.
  • Reflective coating 1 9 (Alumina Etc.) are applied on the inner surface of the cavity 9 '.
  • the outer wall of the cavity 2 adjacent to the coil 8 is covered with a reflective coating 20 (alumina, etc.) to reduce the amount of visible light passing through the inner cavity wall 2.
  • the electrodeless fluorescent lamp 100 can be used in a base up position, a base down position, and a horizontal position.
  • FIG. 2 shows an electrodeless fluorescent lamp 200 which is a variation of the first embodiment of the present invention.
  • the electrodeless fluorescent lamp 2000 has an envelope 1, a cavity 2, a coil 8, and a ferrite core 9 as in the electrodeless fluorescent lamp 100, but does not have a glass skirt 4.
  • the electrodeless compact fluorescent lamp 200 can be used for lamp-up lighting when the coldest point is on the inner surface of the thin glass dome 7.
  • FIGS. 3A-3C show the shapes of the envelopes 22 that can be used in place of the envelopes 1 of the electrodeless fluorescent lamp 100 (FIG. 1) and the electrodeless fluorescent lamp 200 (FIG. 2). Show some.
  • the glass bulge shown in FIG. 3A has a wedge shape 21 and is provided at the top of the envelope 22.
  • Another type of glass ridge that serves as the coldest point is shown in FIGS. 3B and 3C.
  • One ridge has a shape of ⁇ 23, and the other has a shape of a sphere 24.
  • a deep annular depression 25 separates the ridge from the hot walls of the envelope and reduces the temperature of the ridge by improving contact with the surrounding atmosphere.
  • FIGS. 4A to 4D show the shapes of the envelope 34 that can be used in place of the envelope 1 of the electrodeless fluorescent lamp 100 (FIG. 1) and the electrodeless fluorescent lamp 200 (FIG. 2). Show.
  • the coldest point ridge has the shape of an annular ridge 32 having an annular gap 33 where the coldest point is formed.
  • Figure 4 A and In FIG. 4B, an annular ridge is provided at the top of the envelope 34. Ridges 32 with gaps 33 can be provided on the bottom and side walls of the envelope as well (FIGS. 4C and 4D).
  • the lamp operates as follows. Normal inert gas pressure (argon) is about 1 TO rr (about 133 Pa), and inductive coupling power frequency (frequency of alternating current applied to coil 8) is about 100 kHz.
  • AC power from the main power supply (60 Hz) is supplied via the Edison socket 13 to a driver and a matching circuit (not shown) arranged on the PC board 16 in the ceramic enclosure 11.
  • An induced voltage at a frequency of 100 kHz is applied to the coil 8 from the matching circuit.
  • the coil current 1 c generates an induced magnetic field, and the generated induced magnetic field generates an RF azimuthal electric field E z in the envelope.
  • the coil 8 generates an electromagnetic field in the envelope.
  • the voltage V e applied to the coil 8 reaches 200-300 V
  • the voltage V c generates a capacitive discharge along the cavity wall 2 in the envelope.
  • the light output of the lamp depends not only on the power P lamp, but also on the mercury vapor pressure which rises with a temperature of the coldest point 7 (lighting up the base) or 4 (lighting down the base).
  • the maximum light output ie the highest lamp efficiency, is reached when the coldest point temperature is around 44-55 ° C.
  • a further increase in cold spot temperature results in an increase in mercury vapor pressure and a decrease in lamp brightness. Therefore, if the temperature on the surface is sufficiently low, the effect is not so great even if there are bumps.
  • the temperature on the surface of the lamp depends on the lamp wall loading of the lamp.
  • the present inventors found that the tube wall load of the lamp was 0.05 WZc It has been found that when it is not less than m 2 , there is an effect of the ridge. When the lamp wall load is more than 0.07 cm 2 , the effect of the ridge becomes very large.
  • the tube wall load is defined as a value obtained by dividing the active power input to the coil 8 by the inner wall surface area of the envelope 1. The active power input to the coil 8 is measured, for example, by connecting a power meter to the input side of the matching circuit.
  • Light output is achieved when the temperature outside the thin glass dome 7 is 46-48 ° C.
  • the lamp reaches a steady light output after 2 hours of continuous operation at 23W for 2 hours.
  • the stable light output at 23 W was 1515 lumens (66 LPW), and the temperature at the coldest point 7 was 57-59 ° C.
  • the stable light output of the lamp according to the invention corresponds to 93% of the maximum lamp light output of 1630 lumens.
  • the electrodeless miniature fluorescent lamp without specially designed glass addenda (bulges) was found to have low stable light output, only 80-85% of the maximum light output.
  • the tube wall load of this lamp was 0.1 lWZcm 2 .
  • the present inventors have discovered that the higher the height h of the glass dome 7, the lower its temperature and the higher the lamp light output.
  • the height h of the glass dome 7 was preferably less than 7 mm.
  • the other ridges shown in FIGS. 3A-C and 4A-D are also preferably less than 7 mm.
  • the inventors have determined that the temperature of the coldest point on the ridge must not be less than 40 ° C. I discovered that.
  • the inductively coupled power frequency of the electrodeless fluorescent lamp to which the present invention can be applied is not limited to 100 kHz. However, if the inductively coupled power frequency is too low, the electrodeless fluorescent lamp will not be easy to start, and if the inductively coupled power frequency is too high, the cost of the driver will be high, and it will be necessary to prevent electromagnetic interference (EMI). Costs are also high. In consideration of such a point, it is preferable that the inductive coupling power frequency of the electrodeless fluorescent lamp is 50 kHz or more and 1 MHz or less.
  • the ferrite core 9 can be omitted. However, when the electrodeless fluorescent lamp is driven at a relatively low inductive coupling power frequency such as 50 kHz or more and 1 MHz or less, the ferrite core 9 is preferably used. When an electrodeless fluorescent lamp is driven at a low inductively coupled power frequency, the induced voltage V p ⁇ induced in the lamp is lower than when an electrodeless fluorescent lamp is driven at a higher inductively coupled power frequency. Is smaller, and this is compensated for by using the ferrite core 9. When the ferrite core 9 is used, when the electrodeless fluorescent lamp is driven, the heat generated by the loss (iron loss) in the ferrite core 9 increases in addition to the Joule heat of the coil 8.
  • the driven ferrite core 9 is cooled by the cooling structure including the metal tube 10 and the ceramic enclosure 11, but its temperature can rise to about 200 ° C.
  • the coldest point is the top of the lamp away from the plasma.
  • the top of the lamp is close to the top of the ferrite core 9 (near the ceramic spacer 14). Therefore, the top of the lamp is affected by the heat transfer from the ferrite core 9 and the temperature rises. Therefore, when the ferrite core 9 is used, In addition, it is preferable to provide a raised portion for providing the coldest point on the envelope 1. (Embodiment 2)
  • 5A to 5C show shapes of an envelope 44 that can be used for the electrodeless fluorescent lamp according to the second embodiment of the present invention.
  • the envelope 44 can be used in place of the envelope 1 of the electrodeless fluorescent lamp 100 (FIG. 1) of the first embodiment of the present invention.
  • the electrodeless fluorescent lamp according to Embodiment 2 of the present invention has the same configuration as the electrodeless fluorescent lamp 100 except for the envelope 44. Therefore, the overall diagram is not shown.
  • 5A to 5C the exhaust tubing inside the concave cavity 2 is not shown.
  • the coldest point 43 is within the corner 42 formed by the top 46 and the side wall 45 of the envelope. As shown in FIG.
  • corner - 4 2 of the curvature radius r is equal to or less than 1 0 mm, it has been found that the effect of lowering the temperature of the coldest spot 4 3 is obtained.
  • the radius of curvature r is 8 mm or less, the effect of lowering the temperature at the coldest point 43 is further increased, which is more preferable.
  • the inductive coupling power is increased, it is preferable to reduce the radius of curvature to obtain a desired effect.
  • the electrodeless fluorescent lamp of the second embodiment of the present invention is the same as the electrodeless fluorescent lamp of the first embodiment (the electrodeless fluorescent lamp 100 shown in FIG. 1 and the electrodeless fluorescent lamp shown in FIG. 2). It has a corner with a radius of curvature of 1 O mm or less instead of the 200) raised portion.
  • the corners formed by the top of the envelope and the sidewalls of the envelope can have a “mushroom” shape with an angle much less than 90 ° (Figure 5B).
  • the corner having a radius of curvature r of 10 mm or less may not be formed over the entire circumference of the envelope.
  • the envelope may also have an irregular shape without azimuthal symmetry, as shown in FIG. 5C.
  • the corners 42 formed by the top of the envelope and its side walls also have no azimuthal symmetry.
  • the electrodeless fluorescent lamp according to the second embodiment of the present invention operates similarly to the electrodeless fluorescent lamp according to the first embodiment.
  • the application of the principles of the present invention is not limited to electrodeless fluorescent lamps.
  • the fluorescent film coating 18 is not applied to the inner wall of the envelope 1 (FIGS. 1 and 2), so that light due to discharge is directly emitted to the outside of the envelope 1.
  • the present invention can be applied to the electrode discharge lamp based on the same principle as the above-described operation principle. .
  • the application of the present invention is not limited to electrodeless discharge lamps that do not use amalgam. Even in the electrodeless discharge lamp using amalgam, when the ratio of mercury in the amalgam is high, the effect of lowering the temperature of the coldest point by the protuberances or corners increases.
  • the principle of the present invention can be applied as long as the discharge gas enclosed in the envelope of the electrodeless discharge lamp contains mercury vapor. Further, any vaporizable metal may be used instead of or in addition to mercury.
  • the electrodeless discharge lamp of the present invention has a raised portion formed on an envelope and protruding toward the outside of the envelope. This lowers the temperature of the ridges, which increases lamp efficiency.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

L'invention concerne une lampe à décharge sans électrode présentant un rendement élevé. Cette lampe (100) comprend une enveloppe (1) remplie d'un gaz à décharge, une bobine (8) produisant un champ électromagnétique à l'intérieur de l'enveloppe (1), et une partie surélevée formée dans l'enveloppe (1) et s'avançant sur l'extérieur de cette dernière. La charge au niveau de la paroi du tube de cette lampe (100) à décharge sans électrode est supérieure ou égale à 0,05 W/cm2. L'enveloppe (1) comprend en outre une cavité (2) en creux et la bobine (8) peut être installée dans cette cavité.
PCT/JP2001/003969 2000-05-12 2001-05-11 Lampe a decharge sans electrode WO2001088952A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US56956600A 2000-05-12 2000-05-12
US09/569,566 2000-05-12

Publications (1)

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WO2001088952A1 true WO2001088952A1 (fr) 2001-11-22

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JP (1) JP2001325920A (fr)
TW (1) TW492046B (fr)
WO (1) WO2001088952A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004006289A1 (fr) * 2002-07-02 2004-01-15 Matsushita Electric Industrial Co., Ltd. Lampe a decharge sans electrode de type ampoule a et dispositif d'eclairage a lampe a decharge sans electrode

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WO2005045878A2 (fr) * 2003-11-07 2005-05-19 Philips Intellectual Property & Standards Gmbh Boitier demarreur pour lampe a decharge gazeuse, et son procede de montage
US7279840B2 (en) * 2004-11-17 2007-10-09 Matsushita Electric Works Ltd. Electrodeless fluorescent lamp with controlled cold spot temperature
JP4872224B2 (ja) * 2005-03-23 2012-02-08 パナソニック電工株式会社 無電極放電ランプと同ランプを備えた照明器具
JP2007273137A (ja) * 2006-03-30 2007-10-18 Matsushita Electric Ind Co Ltd 無電極放電灯装置、およびそれを用いた照明器具
JP4605095B2 (ja) * 2006-05-26 2011-01-05 パナソニック電工株式会社 無電極放電ランプ及びその製造方法並びに照明器具
JP4915909B2 (ja) * 2006-06-27 2012-04-11 パナソニック株式会社 無電極放電灯及び照明器具
JP4775350B2 (ja) * 2006-09-29 2011-09-21 パナソニック電工株式会社 無電極放電ランプ、及び照明器具、及び無電極放電ランプの製造方法
KR101030481B1 (ko) 2006-09-29 2011-04-25 파나소닉 전공 주식회사 무전극 방전 램프, 조명 기구, 및 무전극 방전 램프의 제조 방법
JP2008159436A (ja) 2006-12-25 2008-07-10 Matsushita Electric Works Ltd 無電極放電ランプ及び照明器具
JP2008243624A (ja) * 2007-03-27 2008-10-09 Matsushita Electric Works Ltd 無電極放電ランプおよびそれを用いた照明器具
KR100894507B1 (ko) 2008-01-04 2009-04-22 금호전기주식회사 무전극 형광램프 및 제조 방법
CN101770927B (zh) * 2009-06-09 2014-04-09 上海镭华照明电器有限公司 荧光发光灯管

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JPS534379A (en) * 1976-07-02 1978-01-14 Toshiba Corp High frequency illuminator
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US4922157A (en) * 1987-06-26 1990-05-01 U.S. Philips Corp. Electrodeless low-pressure discharge lamp with thermally isolated magnetic core
JPH09147809A (ja) * 1995-11-27 1997-06-06 Matsushita Electric Works Ltd 無電極蛍光ランプ
JPH1012197A (ja) * 1996-06-17 1998-01-16 Toshiba Lighting & Technol Corp 無電極放電ランプ、無電極放電ランプ装置、無電極放電ランプ点灯装置、紫外線照射装置及び流体処理装置
JPH1116541A (ja) * 1997-06-25 1999-01-22 Toshiba Lighting & Technol Corp 無電極放電ランプ、放電ランプ点灯装置及び液体処理装置
JPH11354081A (ja) * 1998-05-22 1999-12-24 Matsushita Electric Works Ltd 高周波無電極蛍光ランプ

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004006289A1 (fr) * 2002-07-02 2004-01-15 Matsushita Electric Industrial Co., Ltd. Lampe a decharge sans electrode de type ampoule a et dispositif d'eclairage a lampe a decharge sans electrode
US7064490B2 (en) 2002-07-02 2006-06-20 Matsushita Electric Industrial Co., Ltd. Compact self-ballasted electrodeless discharge lamp and electrodeless-discharge-lamp lighting device

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TW492046B (en) 2002-06-21
JP2001325920A (ja) 2001-11-22

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