METHOD OF MANUFACTURING EXTERNAL ELECTRODE FLUORESCENT LAMPS HAVING VARIOUS SHAPES AND SIZES AND GLASS TUBE UNIT STRUCTURE USED FOR THE METHOD

摘要

According to the present invention, there is provided an external electrode fluorescent lamp manufacturing method of the novel. The method (a) and the both end portions are opened, and is molded into a shape and size corresponding to the end use of the external electrode fluorescent lamp, the glass tube body with a wall portion other than a portion which the external electrode is formed is coated with a fluorescent material providing a and, (b) a second glass tube which contains the electrode for plasma generation comprising the steps of bonding to both ends of the glass tube body, (c) the chukgwan molding for narrowing the diameter in the vicinity of the junction of the glass tube performing and, (d) and the steps of connecting the glass tube body and the exhaust pipe to the combination of the second glass tube, (e) step of evacuating the inside of the conjugate within a certain limit through an exhaust device connected to the exhaust pipe, ( f) the method comprising: through a plasma generating device is connected to the internal electrode for the plasma generation perform a baking operation by generating a plasma within the glass tube, (g) a predetermined amount of the internal exhaust, and a glass tube the residual air to foreign matter in the glass tube and injecting an inert gas, (h) removing the electrode and the exhaust pipe for the plasma generation, and (i) a step of forming an external electrode on the glass tube.