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.

公开(公告)号：CA2297422A1

公开(公告)日：2000-12-22

申请号：CA2297422

申请日：2000-01-28

Applicant: OSRAM SYLVANIA INC

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

IPC: H01J63/00 ,  H01J9/02 ,  H01J9/04 ,  H01J61/067 ,  H01J1/13

Abstract: A fluorescent lamp comprises a glass tubular body defining a discharge space, and first and second electrode assemblies mounted in the discharge space in opposition to each other, each of the electrode assemblies comprising a first electrode and a second electrode. Each of the first electrodes comprises a metal lead wire with an electron-emitting material disposed on a free end thereof, and each of the second electrodes comprises a cup-shaped tube coaxially surrounding one of the first electrodes and the electron-emitting material disposed on the first electrode. The second electrode tube and the electron emitting material therein form an annular gap therebetween.

公开(公告)号：DE602004016935D1

公开(公告)日：2008-11-20

申请号：DE602004016935

申请日：2004-11-03

Applicant: OSRAM SYLVANIA INC

Inventor： ALEXANDROVICH BENJAMIN ,  GODYAK VALERY-ANTON ,  HUTCHERSON R KENNETH ,  SAPOZHNIKOV ALEXANDER A

IPC: H01J65/04 ,  H01J61/28 ,  H01J61/56

Abstract: An electrodeless fluorescent lamp (10) having a burner (20), a ballast housing (30) containing a ballast (40) and a screw base (50) for connection to a power supply. A reentrant cavity (60) is formed in the burner (20) and an amalgam receptacle (70) containing amalgam (75) is formed as a part of the reentrant portion and in communication with the burner (20). A housing cap (80), formed of a suitable plastic, connects the burner (20) to the ballast housing (30) and a suitable adhesive (31) fixes the burner to the housing cap (80). An EMI cup (90) is formed as an insert to fit into the ballast housing (30), which also is formed of a suitable plastic, and has a bottom portion (100) and an EMI cap (110) with an aperture (120) therein closing an upper portion (140). The EMI cup (90) and the EMI cap (110) are preferably formed from 0.5 mm brass. The amalgam receptacle (70) extends through the aperture (120) and into the cup (90). For a fixed amalgam position, changing the aperture size allows adjustment of the amalgam tip temperature, and thus, allows control of the system lumen output, efficacy, CCT and CRI, all of which are dependent on the amalgam temperature.

公开(公告)号：AT410782T

公开(公告)日：2008-10-15

申请号：AT04026099

申请日：2004-11-03

Applicant: OSRAM SYLVANIA INC

Inventor： ALEXANDROVICH BENJAMIN ,  GODYAK VALERY-ANTON ,  HUTCHERSON R KENNETH ,  SAPOZHNIKOV ALEXANDER A

IPC: H01J65/04 ,  H01J61/28 ,  H01J61/56

Abstract: An electrodeless fluorescent lamp (10) having a burner (20), a ballast housing (30) containing a ballast (40) and a screw base (50) for connection to a power supply. A reentrant cavity (60) is formed in the burner (20) and an amalgam receptacle (70) containing amalgam (75) is formed as a part of the reentrant portion and in communication with the burner (20). A housing cap (80), formed of a suitable plastic, connects the burner (20) to the ballast housing (30) and a suitable adhesive (31) fixes the burner to the housing cap (80). An EMI cup (90) is formed as an insert to fit into the ballast housing (30), which also is formed of a suitable plastic, and has a bottom portion (100) and an EMI cap (110) with an aperture (120) therein closing an upper portion (140). The EMI cup (90) and the EMI cap (110) are preferably formed from 0.5 mm brass. The amalgam receptacle (70) extends through the aperture (120) and into the cup (90). For a fixed amalgam position, changing the aperture size allows adjustment of the amalgam tip temperature, and thus, allows control of the system lumen output, efficacy, CCT and CRI, all of which are dependent on the amalgam temperature.