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    FLUORESCENT LAMP AND MANUFACTURE OF ELECTRODE ASSEMBLY FOR FLUORESCENT LAMP
    11.
    发明专利
    FLUORESCENT LAMP AND MANUFACTURE OF ELECTRODE ASSEMBLY FOR FLUORESCENT LAMP 失效

    公开(公告)号：JP2001035438A

    公开(公告)日：2001-02-09

    申请号：JP2000186152

    申请日：2000-06-21

    Applicant: OSRAM SYLVANIA INC

    Inventor： HUTCHERSON R KENNETH ,  GOTAY JAMES A ,  LIMA JOSEPH V ,  CLEARY LOUISE D ,  MOSKOWITZ PHILIP E

    IPC: H01J63/00 ,  H01J9/02 ,  H01J9/04 ,  H01J61/067

    Abstract: PROBLEM TO BE SOLVED: To provide a fluorescent lamp dispensing with a heater power source and operable at low voltage by providing a first electrode comprising a lead wire having an electron emitting material piece at the free end and a second electrode having a cup-like tube for enclosing the lead wire and electron emitting material piece, and forming an annular cavity between the cut-like tube and the electron emitting material piece. SOLUTION: A first electrode comprises a lead wire 20 and an electron emitting material piece 30 provided at the free end of the lead wire 20. The electron emitting material piece 30 is formed by dipping the end of the lead wire 20 in a liquid solution in which a radiating material is dispersed. A second electrode 22 is formed in the same manner as the first electrode, and it comprises a metal tube 32. The metal tube 32 is put on the lead wire 20 and electron emitting material piece 30 while providing an annular cavity, and caulked to the lead wire 20. Electrode assemblies 16, 18 are baked in vacuum and sealed to a glass tube, and a discharge gas such as argon is sealed therein. The length of the cup-like metal tube 32 is set to 2-2.5 times the inside diameter, whereby the lamp discharge is ingeniously performed to extend the lamp life. The electron emitting material allows the thermoionic operation with low current and low power.

    14.
    发明专利
    未知

    公开(公告)号：DE69627593T2

    公开(公告)日：2003-11-27

    申请号：DE69627593

    申请日：1996-08-14

    Applicant: OSRAM SYLVANIA INC

    Inventor： ZASLAVSKY GREGORY ,  LIMA JOSEPH V

    IPC: H01J61/02 ,  H01J61/34 ,  H01K1/34

    Abstract: A lamp comprising: a light transmissive glass envelope (12) including a light source chamber (14); at least one glass extension (22) affixed to said light source chamber (14); a sealing area (26) surrounding a portion of said extension (22); a patterned metal foil (24) affixed to and surrounding said sealing area (26); a glass shroud (30) surrounding at least said light source chamber (14) and having an end (32,34) sealed to said metal foil (24).

    15.
    发明专利
    未知

    公开(公告)号：DE69811021D1

    公开(公告)日：2003-03-06

    申请号：DE69811021

    申请日：1998-09-09

    Applicant: OSRAM SYLVANIA INC

    Inventor： SCHOLZ JOHN A ,  LIMA JOSEPH V ,  NORTRUP EDWARD H ,  KRASKO ZEYA K ,  GAGNON PETER R ,  GALLANT JOSEPH P

    IPC: H01J61/34 ,  H01J61/36 ,  H01J61/12

    Abstract: A reflector lamp 10 has a vitreous outer envelope 12 formed of a concave reflector 14 and a light-transmitting 16 cover peripherally sealed thereto. The concave reflector and cover are symmetrically arrayed about a longitudinal axis 18 and a substantially cylindrical, hollow neck 20 having a given depth is affixed to the concave reflector opposite the cover. The neck 20 also is symmetrically arrayed about the longitudinal axis 18 and has a substantially closed bottom 21. At least two eyelets, 22, 24, respectively, are sealed in the bottom 21 and a light source capsule 26 is positioned in the concave reflector and aligned with the longitudinal axis 18. The light source capsule 26 has a first end 28 situated in the neck 20 and a second end 30 extending into the concave reflector. The light source capsule 26 comprises a quartz arc tube 32 containing an arc generating and sustaining medium and a surrounding aluminosilicate glass shroud 34. First and second conductive lead-ins 36, 38, respectively, are sealed into a first seal 40 formed at a first end 42 of the shroud 34. Each of the lead-ins 36, 38 has a first portion 44, 46, respectively, sealed in one of the eyelets 22, 24. The first conductive lead-in 36 has a second portion 48 extending interiorly of the shroud and connecting a first electrode 50 of the arc tube and contains a bend or offset 49 to take expansion differences during operation. The second lead-in 38 has a second portion 54 terminating within the first seal 40. An outer conductor 56 has a first end 58 sealed in a second end 60 of the shroud 34 and connects a second electrode 62 of the arc tube 32. A middle section 64 of the outer conductor 56, which is surrounded by an electrically insulating sleeve 57 for at least part of its length, extends exteriorly of the shroud 34 and has a second end 66 connected to the second said lead-in 38. A conventional screw base 68 completes the lamp.

    20.
    发明专利
    未知

    公开(公告)号：DE602006008848D1

    公开(公告)日：2009-10-15

    申请号：DE602006008848

    申请日：2006-03-21

    Applicant: OSRAM SYLVANIA INC

    Inventor： LIMA JOSEPH V ,  NEIL JEFFREY T ,  PEREZ VICTOR E

    IPC: H01J9/24 ,  B28B1/24 ,  B28B1/26 ,  B28B21/38 ,  H01J61/30

    Abstract: A method of molding a ceramic vessel includes compressing a water-soluble powder, suspending the compressed powder shape in a mold, injecting a ceramic molding mixture into the mold, and dissolving the compressed powder by flushing the vessel with water. A core for making an arc discharge vessel that has a discharge chamber and two capillaries includes a molded core of the water-soluble powder having a shape of the discharge chamber, and preferably two capillary-forming pins extending from the molded core. An apparatus for removing the molded core that includes a water reservoir that preferably flushes water through the vessel and dissolves molded core.

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