公开(公告)号：US06335590B2

公开(公告)日：2002-01-01

申请号：US09756297

申请日：2001-01-09

Applicant: Norio Iwamura ,  Sachio Koizumi

Inventor： Norio Iwamura ,  Sachio Koizumi

IPC: H01J2910

CPC classification number: H01J1/22 ,  H01J2201/2867

Abstract: A cathode ray tube include phosphor screen and an electron gun. The electron gun includes an indirectly heated cathode structure and plural grid electrodes arranged in axially spaced relationship. The cathode structure includes a base metal having an electron emissive material coating and a heater for heating the base metal. The heater includes a major heating portion having a spirally wound heating wire and a pair of leg portions connected to opposite ends of the major heating portion. The major heating portion and an inner portion of each of the leg portions on a major-heating-portion side thereof are covered with an insulating coating, and the heater is welded to electrical conductors for applying a voltage thereto at an outer portion of each of the leg portions, the outer portion not being covered with the insulating coating. The outer portion of each of the leg portions includes a first multilayer winding portion having heating wires wound spirally in plural layers, and the inner portion of each of the leg portions includes a second multilayer winding portion having heating wires wound spirally in plural layers. The number of turns per unit length in the first multilayer winding portion is smaller than that in the second multilayer winding portion.

Abstract translation: 阴极射线管包括荧光屏和电子枪。 电子枪包括间接加热的阴极结构和沿轴向间隔布置的多个栅格电极。 阴极结构包括具有电子发射材料涂层的基底金属和用于加热母材的加热器。 加热器包括具有螺旋卷绕的加热丝的主加热部分和连接到主加热部分的相对端的一对腿部。 主加热部分和其主要加热部分侧上的每个腿部的内部部分被绝缘涂层覆盖，并且加热器被焊接到电导体以在每个的外部施加电压 腿部，外部不被绝缘涂层覆盖。 每个腿部的外部包括具有多个螺旋缠绕的加热丝的第一多层缠绕部分，并且每个腿部的内部包括具有螺旋缠绕的多个加热线的第二多层缠绕部分。 第一多层绕组部中的每单位长度的匝数小于第二多层卷绕部的匝数。

公开(公告)号：US5341064A

公开(公告)日：1994-08-23

申请号：US998739

申请日：1992-12-30

Applicant: Kwang-ki Seong

Inventor： Kwang-ki Seong

IPC: H01J29/04 ,  H01J1/22 ,  H01J29/46 ,  H01J1/94 ,  H01J19/48

CPC classification number: H01J1/22 ,  H01J2201/2867

Abstract: Disclosed is a cathode assembly of an electron gun for a color cathode ray tube in which a heater support structure is improved. The cathode assembly of an electron gun for a color cathode ray tube comprising three cylindrical sleeves which are arranged in an in-line type, a base metal which is located at the upper end of the sleeves, and of which the surfaces are coated with thermal electron emitting material, a heater which is located on the inner portion of each of the sleeves and having two parallel terminals which are exposed out of the sleeves, and a heater fixture block in which three pairs of welding terminals corresponding to the three heaters and two signal lines for forming an electrical circuit along with the welding terminals are provided in the lateral surface and two parallel bead glasses for supporting the sleeves and the block. The heater support structure is simple and the stability thereof is improved. Also, the heater is easily assembled to have a high productivity.

Abstract translation: 公开了一种用于彩色阴极射线管的电子枪的阴极组件，其中改进了加热器支撑结构。 一种用于彩色阴极射线管的电子枪的阴极组件，包括以串联方式布置的三个圆柱形套筒，位于套筒上端的基底金属，其表面涂有热量 电子发射材料，位于每个套管的内部并且具有从套筒露出的两个平行端子的加热器，以及加热器固定块，其中三对焊接端子对应于三个加热器和两个 用于与焊接端子一起形成电路的信号线设置在侧面和两个平行的珠玻璃中，用于支撑套筒和块。 加热器支撑结构简单，其稳定性提高。 此外，加热器容易组装以具有高的生产率。