Title:
AN IMPROVED ELECTROMAGNETIC INDUCTIVE LAMP
Document Type and Number:
WIPO Patent Application WO/2005/088676
Kind Code:
A1
Abstract:
The invention discloses an improved electromagnetic inductive lamp, which includes a lampholder mounded to a lamp socket; a case for control circuit covered by the lampholder, in which a control circuit is located; a lamp tube connected to the case for control circuit and coated with a fluorescent layer on its inner wall, inside which a gas and an amalgam are contained; a magnetic hoop surrounded the lamp tube and enclosed one cross section of the lamp tube; a magnetic ring located within the magnetic hoop and also enclosed the said cross section of the lamp tube; a coil wounded the magnetic ring and connected with the control circuit, which provides a magnetic field to lighten the electromagnetic inductive lamp. The electromagnetic inductive lamp only uses one magnetic hoop which encloses one cross section of the lamp tube, and the exhaust pipe of the lamp tube is located inside the lamp tube, so it can solve fragileness of the exhaust pipe and reduce the whole volume of the lamp. Further than that, the positive column in the bottom of the lamp tube also has an expansive sectional area to control optimum operating temperature of the plasma, so it can effectively reduce ionizing loss of discharge, and more particularly, solve radial corona of hydrargyrum during discharge.
Inventors:
LI WEIDE (CN)
Application Number:
PCT/CN2005/000334
Publication Date:
September 22, 2005
Filing Date:
March 17, 2005
Export Citation:
Assignee:
SHANGHAI HONGYUAN LIGHTING & E (CN)
LI WEIDE (CN)
LI WEIDE (CN)
International Classes:
H01J65/04; (IPC1-7): H01J65/04
Foreign References:
| CN1158186A | 1997-08-27 | |||
| JPH0794151A | 1995-04-07 | |||
| CN1272681A | 2000-11-08 |
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (Shanghai 3, CN)
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