公开(公告)号：US3798491A

公开(公告)日：1974-03-19

申请号：US3798491D

申请日：1972-12-18

Applicant: GEN ELECTRIC

Inventor： MALM R

IPC: H01K3/08 ,  C03C3/085 ,  H01K1/28 ,  H01K3/00 ,  H01K3/12 ,  H01K3/20 ,  H01K3/22 ,  H01K1/30

CPC classification number: H01K1/28 ,  C03C3/085 ,  H01K3/00

Abstract: An incandescent lamp of the tungsten-halogen type having an envelope of an aluminosilicate glass comprising in percent by weight SiO2 between 59 to 70, Al2O3 between 10 to 20 and BaO between 7.4 to 28 and having a coefficient of expansion between 36 and 40 X 10 7 per *C and a tungsten filament connected to lead wires which are directly sealed into the envelope. One end of the lamp envelope is rounded and the other end contains the seal and the tipped-off residue of an exhaust tube. Enclosed in the tipped-off residue is a spiral of tungsten wire which keeps the exhaust tube open during the lead wire sealing operation.

Abstract translation: 钨卤素型白炽灯具有铝硅酸盐玻璃的外壳，其中以重量百分数计的二氧化铈在59至70之间，Al 2 O 3在10至20之间，BaO在7.4至28之间，并且膨胀系数在36至40×10 6之间。 > 7℃，钨丝与导线直接密封在一起。 灯壳的一端是圆形的，另一端包含一个排气管的密封和一个倒出的残留物。 封闭的残留物是钨丝的螺旋，在引线密封操作期间保持排气管打开。