公开(公告)号：US4251746A

公开(公告)日：1981-02-17

申请号：US15620

申请日：1979-02-27

申请人： Takao Kawamura ,  Yukihiro Izumida ,  Hiroshi Fukushima ,  Takeo Takemoto ,  Masaru Nakazawa ,  Tetsuo Kumazawa

发明人： Takao Kawamura ,  Yukihiro Izumida ,  Hiroshi Fukushima ,  Takeo Takemoto ,  Masaru Nakazawa ,  Tetsuo Kumazawa

IPC分类号： H01J1/15 ,  H01J29/04 ,  H01J1/14 ,  H01J19/06 ,  H01K1/04

CPC分类号： H01J1/15 ,  H01J29/04

摘要： There is disclosed a direct-heated cathode structure which comprises an insulating substrate; a pair of conductive supporting rods penetrating the substrate in the direction substantially perpendicular to the surface of the substrate and fixed tightly to the substrate; and a conductive member made of a single metal plate and including a first portion which is arranged in a plane spaced apart from the surface of the substrate by a predetermined distance and substantially parallel to the surface of the substrate and is coated with an electron emissive material, second portions which are extended from the first portion in the above-mentioned parallel plane substantially symmetrically with respect to the first portion, third portions which are extended from the end of extension of each of the second portions in the direction substantially perpendicular to the surface of the substrate toward the substrate, and fourth portions which are extended from the ends of the third portions in the direction substantially parallel to the surface of the substrate in the same plane as the third portions and are fixed to the supporting rods in the neighborhood of the end of extension of the fourth portions. Each of the first, second and third portions has a side wall provided along at least a part of the edges of these portions and extending in the direction substantially perpendicular to the surfaces of these portions.

摘要翻译： 公开了一种直接加热的阴极结构，其包括绝缘基板; 一对导电支撑棒，其在基本上垂直于基板的表面的方向上穿透基板，并紧密地固定到基板上; 以及由单个金属板制成并且包括第一部分的导电部件，所述第一部分布置在与所述基板的表面间隔开预定距离并且基本上平行于所述基板的表面的平面中，并且涂覆有电子发射材料 第二部分从上述平行平面中的第一部分相对于第一部分大致对称​​地延伸，第三部分从基本上垂直于表面的方向从每个第二部分的延伸端延伸 基板朝向基板的第四部分，以及从第三部分的端部沿与第三部分相同的平面中的基板的表面的方向基本平行的方向延伸的第四部分，并且固定到邻近的支撑杆 第四部分的延伸端。 第一，第二和第三部分中的每一个具有沿这些部分的边缘的至少一部分设置的侧壁，并且在基本垂直于这些部分的表面的方向上延伸。