Title:
DUAL EXTERNAL ELECTRODE FLUORESCENT LAMP AND MANUFACTURING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2010/131790
Kind Code:
A1
Abstract:
The present invention provides a new dual external electrode fluorescent lamp and a manufacturing method thereof. According to one embodiment, the invention provides a manufacturing method of a dual external electrode fluorescent lamp comprising: (i) a step of providing a 1st glass tube that has both ends opened thereof and an inner wall thereof coated or not coated with a fluorescent material, wherein the diameter of the opened both ends is extended; (ii)a step of mutually connecting the 1st glass tube with two 2nd glass tubes by joining both opened ends of the 1st glass tube to the two both-end opened 2nd glass tubes that include opened ends thereof and have a diameter larger than that of the 1st glass tube; (iii) a step of joining a 1st multi-tube for the enlargement of an electrode area in the one 2nd glass-tube or a 'flare' structure having one closed end to one end of one 2nd glass tube through insertion after spreading one end widely, and a step of enlarging an electrode area in the other 2nd tube and joining a 2nd multi-tube having an exhaust port to the other 2nd tube through insertion; and (iv) a step of cutting and sealing a portion of the exhaust port after vacuumizing the inside of the glass tubes and injecting discharge gas inside the glass tubes through the connection of an exhaust system to the exhaust port. As mentioned above, the invention is able to obtain a desirable area for an external electrode by providing a multi-tube shaped 2nd glass tube and another 2nd glass tube having an external electrode without lengthily extending the length of the external electrode for the obtainment of desirable luminance if a long external electrode fluorescent lamp is required depending on the use of the lamp. Accordingly, a non-luminous region resulting from the external electrodes in a long external electrode fluorescent lamp can be reduced.
More Like This:
Inventors:
JO JUNG-YEUL (KR)
Application Number:
PCT/KR2009/002589
Publication Date:
November 18, 2010
Filing Date:
May 15, 2009
Export Citation:
Assignee:
JO JUNG-YEUL (KR)
International Classes:
H01J9/26; H01J9/38; H01J65/00
Foreign References:
| KR20040061436A | 2004-07-07 | |||
| JP2001093465A | 2001-04-06 |
Download PDF:
Claims: