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Cone for cathode-ray tube

A technology for cathode ray tubes, applied in the direction of cathode ray tubes/electron beam tubes, cathode ray/electron beam tube shells/containers, discharge tubes, etc., can solve problems such as damage to cathode ray tubes, and achieve the possibility of suppression and rolling Smooth, eliminating the time required to fill or the effect of increased stamping pressure

Inactive Publication Date: 2006-03-29
NIPPON ELECTRIC GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to such scratches or varying degrees of vacuum stress, there is an unavoidable possibility of CRT breakage

Method used

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  • Cone for cathode-ray tube
  • Cone for cathode-ray tube
  • Cone for cathode-ray tube

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0029] Below, according to Figure 1 to Figure 4 An example of a funnel for a cathode ray tube of the present invention (dimension 76 cm, aspect ratio 16:9, deflection angle 120°, neck outer diameter 29.1 mm) will be described. In the following description, for the above-mentioned Fig. 6 to Figure 8 Components that are the same as the main structural components shown are assigned the same bows, and detailed descriptions thereof are omitted.

[0030] figure 1It is the figure which shows the first quadrant of the front of the funnel for cathode ray tubes of the embodiment, the two-dot chain line shows the contour shape of the outer surface in the cross section P(z), and the dotted line shows the transverse direction of the funnel for cathode ray tubes of the prior art. The profile shape of the exterior surface in section. For example, the values ​​of three circular arcs RL, RD, and RS when z=60 (mm) are RL=4072mm, RD=40mm, and RS=636mm in the contour shape of the outer surf...

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PUM

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Abstract

A funnel for a cathode ray tube has a relationship 0< alpha (z) H01J 29 / 86 7 11 3 2002 / 4 / 16 1381866 2002 / 11 / 27 1248284 2006 / 3 / 29 2006 / 3 / 29 2006 / 3 / 29 Nippon Electric Glass Co., Ltd. Japan Kakinoki Hiroshi wang huaqiang 11227 Japan 2001 / 4 / 17 2001-117631 Japan 2001 / 12 / 19 2001-385344

Description

technical field [0001] The present invention relates to cones forming glass envelopes for cathode ray tubes. Background technique [0002] A glass envelope for a cathode ray tube is composed of a front panel for displaying an image, and a funnel located behind and sealed with the panel to form a glass envelope. As shown in FIG. 6, the funnel 1 includes: a substantially rectangular opening end portion 10 having an outline shape similar to that of the panel; a cylindrical neck portion 11 for accommodating an electron gun; a deflection yoke portion 12 for externally housing a deflection yoke; and A funnel-shaped body portion 13 continuously changes from the open end portion 10 to the deflection yoke portion 12 . The connecting portion between the deflection yoke portion 12 and the main body portion 13 is generally called TOR (Top Of Round). [0003] The profile shape of the cross-section P(z) of the main body portion 13 parallel to the opening end 10 forms a rectangle substan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J29/86H01J29/02
CPCH01J29/861H01J2229/8616H01J29/02
Inventor 柿木浩
Owner NIPPON ELECTRIC GLASS CO LTD