公开(公告)号：US06492768B1

公开(公告)日：2002-12-10

申请号：US09325573

申请日：1999-06-04

Applicant: Sachio Koizumi ,  Norio Iwamura ,  Terutoshi Ichihara

Inventor： Sachio Koizumi ,  Norio Iwamura ,  Terutoshi Ichihara

IPC: H01J2946

CPC classification number: H01J1/22 ,  H01J2201/2875

Abstract: A cathode ray tube includes a phosphor screen and an electron gun. The electron gun includes an indirectly heated cathode structure and plural grid electrodes 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 leg portions disposed at ends of the major heating portion, and each of the leg portions includes a first multilayer winding portion having heating wires wound spirally in plural layers and a second multilayer winding portion disposed intermediate between the major heating portion and the first multilayer winding portion and having heating wires wound in plural layers. The major heating portion and at least a portion of the second multilayer winding portion are covered with an insulating coating, the heater is welded to electrical conductors for applying a voltage thereto at the first multilayer winding portion, and the number of layers in the second multilayer winding portion is at least three and the number of layers in the first multilayer winding portion is larger 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开的多个栅电极。 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。 加热器包括主要加热部分，其具有设置在主加热部分的端部处的螺旋缠绕的加热丝和腿部部分，并且每个腿部包括具有螺旋缠绕的多个加热线的第一多层缠绕部分和多个第二多层缠绕 部分设置在主加热部分和第一多层缠绕部分之间，并且具有缠绕在多层中的加热丝线。 主要加热部分和第二多层缠绕部分的至少一部分被绝缘涂层覆盖，加热器被焊接到用于在第一多层缠绕部分施加电压的电导体，并且第二多层缠绕部分中的层数 绕组部分为至少三个，并且第一多层绕组部分中的层数大于第二多层卷绕部分中的层数。

公开(公告)号：US5453657A

公开(公告)日：1995-09-26

申请号：US299245

申请日：1994-08-31

Applicant: Gong S. Park

Inventor： Gong S. Park

IPC: H01J29/04 ,  H01J1/22 ,  H01J1/26 ,  H01J1/20 ,  H01J19/14 ,  H01J29/46

CPC classification number: H01J1/22 ,  H01J1/26 ,  H01J2201/2875

Abstract: This invention relates to an indirectly-heated cathode heater structure comprising a heat generation section disposed inwardly of an upper portion of a sleeve for generating heat to emit thermions at an electron gun of a cathode ray tube, the heat generation section having a given calorific value being formed to have a length 25.about.33 % of the length of the sleeve, whereby heat loss at a lower portion of the sleeve during heating operation of the heater may be minimized, resulting in improving an overshoot rate of the heater.

Abstract translation: 本发明涉及一种间接加热的阴极加热器结构，该结构包括一个发热部分，该发热部分设置在套管上部的内部，用于产生热量以在阴极射线管的电子枪处发射热量，该发热部分具有给定的热值 形成为具有长度为25％的套筒长度的差异，因此加热器的加热操作期间套筒下部的热损失可以最小化，从而改善加热器的过冲速率。