Fused joint structure in a lamp tube and forming method therefor
A technology of fusion bonding and manufacturing method, applied in the manufacture of discharge tubes/lamps, cold cathode manufacture, electrode system manufacture, etc., can solve the problems of easy fracture of grain boundaries, poor welding peeling, etc., achieve stable welding strength, and realize poor deformation. , The effect of reducing welding perforation defects
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[0024] Lamps to which the fusion-bonded structure of the present invention is applied include incandescent lamps or discharge lamps typified by halogen lamps. In addition, in the present invention, "conductive member" refers to an inner lead rod and an outer lead rod in an incandescent lamp, and refers to an electrode core rod and an outer lead rod in a discharge lamp using a metal foil seal. In the discharge lamp of the foil seal, a plurality of metal foils are welded, a disk-shaped member connected to an electrode mandrel, and a disk-shaped member connected to an external lead.
[0025] A first embodiment of the present invention will be described with reference to FIGS. 1 to 4 .
[0026] FIG. 1 is a cross-sectional view showing the configuration of a both-ends-sealed type discharge lamp using one metal foil seal.
[0027] As shown in the figure, a pair of electrodes 3 are disposed in the discharge vessel 2 of the discharge lamp 1, and a metal foil of an electrode core rod ...
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