发明名称 |
INDIRECTLY HEATED CATHODE AND FLUORESCENT LUMINOUS DEVICE USING SAME |
摘要 |
<p>PURPOSE:To reduce the power consumption by a voltage dropping resistor by constituting the cathode substrate of the indirectly heated cathode of a fluorescent luminous device with a metal fine wire wound on an insulation- covered heater core wire and a bypass wire arranged along the heater longitudinal direction in contact with the metal fine wire. CONSTITUTION:The heater section 3 of a fluorescent luminous device using in indirectly heated cathode is constituted with a tungsten wire 1 as a heater core wire and an alumina layer 2 as an insulating layer, an cathode substrate 6 made of a coil-shaped metal fine wire 4 and a linear metal bypass wire 5 reducing the resistance of the wire 4 is arranged on this layer 2. The bypass wire 5 of this substrate 6 is arranged along the longitudinal direction of the wire 1, the fine wire 4 is wound at the preset pitch on the bypass wire 5 and the heater section 3 so as to incorporate the bypass wire 5. The resistance of the substrate 6 of the indirectly heated cathode 20 is decreased to reduce the power consumption by a voltage dropping resistor.</p> |
申请公布号 |
JPH01206537(A) |
申请公布日期 |
1989.08.18 |
申请号 |
JP19880030071 |
申请日期 |
1988.02.13 |
申请人 |
FUTABA DENSHI KK |
发明人 |
ITO SHIGEO;TONEGAWA TAKESHI;NIIYAMA TAKEHIRO |
分类号 |
H01J1/26;H01J1/20;H01J29/04;H01J31/15;H01J63/06 |
主分类号 |
H01J1/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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