EP1414058A2 - Elektrodenloses Lampensystem und zugehöriger Kolben - Google Patents

Elektrodenloses Lampensystem und zugehöriger Kolben Download PDF

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Publication number
EP1414058A2
EP1414058A2 EP20030000587 EP03000587A EP1414058A2 EP 1414058 A2 EP1414058 A2 EP 1414058A2 EP 20030000587 EP20030000587 EP 20030000587 EP 03000587 A EP03000587 A EP 03000587A EP 1414058 A2 EP1414058 A2 EP 1414058A2
Authority
EP
European Patent Office
Prior art keywords
bulb
conductors
microwave
resonator
unit
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Withdrawn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
EP20030000587
Other languages
English (en)
French (fr)
Other versions
EP1414058A3 (de
Inventor
Joon-Sik Choi
Yong-Seog Jeon
Hyo-Sik Jeon
Hyun-Jung Kim
Ji-Young Lee
Byeong-Ju Park
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.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP1414058A2 publication Critical patent/EP1414058A2/de
Publication of EP1414058A3 publication Critical patent/EP1414058A3/de
Withdrawn legal-status Critical Current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
    • H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
    • H01J61/545—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode inside the vessel
    • 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
    • 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
    • H01J65/044—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 a separate microwave unit

Definitions

  • the present invention relates to an electrodeless lamp system, and particularly, to a bulb used in an electrodeless lamp system.
  • An electrodeless lamp system is a device for lighting by forming an electric field using microwave in a bulb unit in which a luminous material which illuminates by forming plasma due to the electric field.
  • the electrodeless lamp system can be re-lighted after a certain time (tens of seconds - a few minutes) passed, since a mean free path of an electron having energy for forming plasma is not ensured due to high pressure of neutral gas, that is, the buffer gas filled together with the luminous material in the bulb unit.
  • an object of the present invention is to provide an electrodeless lamp system and a bulb thereof by which re-lighting can be made easily and a size of a bulb unit can be reduced greatly.
  • a bulb of an electrodeless lamp system comprising: a bulb unit having an envelope space in which luminous material excited by an electric field to form plasma and to generate light is filled; and two or more conductors installed in the envelope space and disposed to face end portions of each other.
  • an electrodeless lamp system comprising: a microwave generator for generating microwave; a resonator connected to the microwave generator to resonate the microwave generated in the microwave generator; a bulb unit having an envelope space in which luminous material which is excited by an electric field to form plasma is filled in order to generate light, installed in the resonator; and two or more conductors installed in the envelope space and disposed to face end portions of each other.
  • an electrodeless lamp system comprises: a microwave generator 20 for generating microwave; a resonator 40 connected to the microwave generator 20 to resonate the microwave generated in the microwave generator 20; a bulb unit 10 having an envelope space, in which luminous material excited by electric field formed in the resonator 40 to form plasma and to generate light is filled, installed in the resonator 40; and two conductors 11 installed in the envelope space 12 so that end portions face each other.
  • the microwave generator 20 is a device for generating microwave forming an electric field, by which the luminous material is able to form the plasma, and a magnetron is used as the microwave generator generally.
  • the microwave generator 20 can be installed with the resonator 40 or additionally, and the microwave generator 20 can be connected to the resonator 40 by a waveguide 30 in order to transmit microwave generated from the microwave to the resonator 40.
  • the luminous material may be metal, halogen compound, sulfur or selenium (Se) which is able to generate the light such as visible ray (wavelength of the generated light can be varied according to the luminous material).
  • buffer gas comprising Ar, Xe, Kr, etc. for initial lighting, and discharge catalyst material such as mercury for helping the initial discharging to make the lighting performed easily or controlling characteristics of the generated light are filled with the luminous material.
  • a sealed envelope space 12 is formed in the bulb unit 10, and the bulb unit 10 is made with material having high light transmittance and little dielectric loss such as quartz or light transmittable ceramic.
  • a thickness of the bulb unit 10 is larger than twice of a width of the envelope space 12 in order to improve easiness in fabrication and the reliability of the bulb unit 12.
  • the bulb unit 10 is installed in the resonator 40, and may be installed by a supporting member 15 as shown in Figure 1.
  • Two (or more) conductors 11 may be installed, and the ends of the conductors are disposed to face each other so that strong electric field is formed between the ends of the conductors as shown in Figure 2.
  • the conductors 11 are made of material such as tungsten having high heat resistance so that physical shape of the conductors can be maintained even in high temperature of hundreds °C in the envelope space 12.
  • the conductors 11 may be coated with heat-resisting member 13 on outer circumferential surfaces thereof so as to prevent the conductors from being deteriorated by directly reacting with the luminous material in the envelope space 12.
  • the heat-resisting member 13 may be same material as the bulb unit 10 such as the quartz or the light transmittable ceramic, when considering the junction with the bulb unit 10 and the coefficient of thermal expansion, and the heat-resisting member 13 may be formed with marginal space as considering the thermal expansion of the conductors 11.
  • the conductors 11 are able to concentrate the electric field more effectively according to the shapes of the bulb unit 10 or the conductors 11.
  • a spire 11a may be formed on the end of the conductor 11 as shown in Figures 2 and 3.
  • the heat-resisting member 13 may be coated on the conductor 11 as shown in Figure 6.
  • the shape of the bulb unit 10 may be changed in order to improve the concentration of electric field in the envelope space 12, and the shape of the bulb unit 10 can be formed as '8' shape as shown in Figures 7 and 8, not as a general spherical or circular shape.
  • the ends of the conductors 11 are installed on both sides taking a curved part of the envelope space 12 therebetween, and thereby, the part where the electric field is concentrated is narrowed to generate plasma concentration phenomenon, and the re-lighting is accelerated and the size of light source can be controlled.
  • the bulb unit 10 having '8' shape is able to control the gap between the conductors 11, and control the shape of the envelope space 12.
  • the distance between the ends of the conductors 11 is in proportion to the size of the envelope space 12, and therefore, the re-lighting characteristic according to the size change of bulb unit 10 can be improved.
  • the re-lighting characteristic can be improved by reducing the distance between the ends.
  • the distance between the ends of the conductors 11 is in proportion to the size of the bulb unit 10 or the size of the envelope space 12, and therefore, appropriate electric field concentration phenomenon can be generated for initial lighting or for the re-lighting.
  • the conductors 11 can be installed in the bulb unit 10 without using the additional heat-resisting member 13 for protecting the conductors 11.
  • the electrodeless lamp system according to the present invention may include an microwave feeder unit 50 which is connected to the microwave generator 20 and extended into the resonator 60 for transmitting the microwave generated in the microwave generator 20 into the resonator 60.
  • an microwave feeder unit 50 which is connected to the microwave generator 20 and extended into the resonator 60 for transmitting the microwave generated in the microwave generator 20 into the resonator 60.
  • one of the conductors 11 is connected to the microwave feeder unit 50, and the other may be connected to the resonator 50.
  • Unexplained reference numeral 71 represents a reflecting mirror for making the light generated from the bulb unit 10 face toward a certain direction
  • reference numeral 72 represents a mesh member which transmits the light and blocks the microwave.
  • the parts 14 connected to the conductors 11 represent status that the conductors 11 are connected to the resonator 60 and to the microwave feeder unit 50 respectively, in case that the bulb unit 10 is used in the electrodeless lamp system shown in Figure 4.
  • the microwave generator 20 generates the microwave having an output set by electric power supply, and the generated microwave is transmitted into the resonator 40 by the waveguide 30.
  • the luminous material filled in the envelope space 12 of the bulb unit 10 forms plasma by the electric field formed in the resonator 40, and thereby, the light is generated.
  • the buffer gas makes the initial lighting or the re-lighting of the bulb unit 10 easy, and at the same time, the strong electric field is concentrated between the conductors 11 to make the initial lighting or the re-lighting easy.
  • the strong electric field is formed between the resonator 60 and the microwave feeder unit 50.
  • the conductors 11 connected to the microwave feeder unit 50 and to the resonator 60 form the strong electric field together, and thereby, the initial lighting or the re-lighting can be made easily.
  • the conductors facing each other are installed in the bulb unit to make the electric field concentrate on the ends of the conductors, and accordingly, the strong electric field is formed and the discharge speed of the electrons is accelerated. Thereby, the initial lighting time or the re-lighting time of the electrodeless lamp system can be reduced.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
EP03000587A 2002-10-24 2003-01-14 Elektrodenloses Lampensystem und zugehöriger Kolben Withdrawn EP1414058A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20020064349 2002-10-24
KR2002064349 2002-10-24

Publications (2)

Publication Number Publication Date
EP1414058A2 true EP1414058A2 (de) 2004-04-28
EP1414058A3 EP1414058A3 (de) 2006-02-15

Family

ID=32064967

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03000587A Withdrawn EP1414058A3 (de) 2002-10-24 2003-01-14 Elektrodenloses Lampensystem und zugehöriger Kolben

Country Status (1)

Country Link
EP (1) EP1414058A3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014161670A1 (de) * 2013-04-05 2014-10-09 Cooper Crouse-Hinds Gmbh Leuchte

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3918839A1 (de) * 1988-06-20 1989-12-21 Gen Electric Entladungslampe hoher intensitaet
EP0458544A2 (de) * 1990-05-23 1991-11-27 General Electric Company Starthilfe für eine elektrodenlose Starkentladungslampe
EP0602746A1 (de) * 1992-12-15 1994-06-22 Matsushita Electric Works, Ltd. Elektrodenlose Entladungslampe
WO1997027617A1 (en) * 1996-01-26 1997-07-31 Fusion Lighting, Inc. Microwave container screens for electrodeless lamps
US6072268A (en) * 1992-04-13 2000-06-06 Fusion Lighting, Inc. Lamp apparatus and method for re-using waste light

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3918839A1 (de) * 1988-06-20 1989-12-21 Gen Electric Entladungslampe hoher intensitaet
EP0458544A2 (de) * 1990-05-23 1991-11-27 General Electric Company Starthilfe für eine elektrodenlose Starkentladungslampe
US6072268A (en) * 1992-04-13 2000-06-06 Fusion Lighting, Inc. Lamp apparatus and method for re-using waste light
EP0602746A1 (de) * 1992-12-15 1994-06-22 Matsushita Electric Works, Ltd. Elektrodenlose Entladungslampe
WO1997027617A1 (en) * 1996-01-26 1997-07-31 Fusion Lighting, Inc. Microwave container screens for electrodeless lamps

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014161670A1 (de) * 2013-04-05 2014-10-09 Cooper Crouse-Hinds Gmbh Leuchte
US9812314B2 (en) 2013-04-05 2017-11-07 Eaton Protection Systems Ip Gmbh & Co. Kg Lamp

Also Published As

Publication number Publication date
EP1414058A3 (de) 2006-02-15

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