JPH0265042A - reinforced cathode ray tube - Google Patents

Abstract

PURPOSE:To prevent the enlargement of the outside dimension of a braun tube because of a welding fitting by butting the both ends of a metal stripe band and connecting its abutted part through a fitting lug. CONSTITUTION:The numeral 6 in the figure shows a pannel and a metal sprite band 7 is provided to lap the outer peripheral surface of the pannel 6 on a heat-proof tape 8 as a substrate previously provided under the heated condition. Under the abutted condition of both ends at a corner part 9 of the pannel 6, this abutted part is connected by welding through a fitting lug 10. Thereafter, the metal sprite band 7 is cooled to shrink so as to strongly fasten to reinforce the outer peripheral part of the pannel. Thereby, the welding fitting becomes unnecessary, and the probrem that the outside dimension of a braun tube is enlarged becaused of the welding fitting is eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The invention relates to a reinforced cathode ray tube, particularly a reinforced cathode ray tube.

[Conventional technology]

Generally, in cathode ray tubes, the interior of the glass bulb is maintained at a high vacuum, so there is a danger of glass fragments flying off due to implosion when the glass bulb breaks.

For this reason, conventionally, as shown in FIG. 4, a heat-resistant tape 2 to which a heated metal strip 1 has been attached in advance is wrapped around the outer circumferential surface of the panel 3 by scraping the base, approximately at the center of the short side of the panel. The panels were welded together through welding fittings 4, and then cooled and shrunk to firmly tighten and reinforce the outer peripheral surface of the panel.

Further, in order to attach a cathode ray tube to a television set, a mounting lug 5 is provided at the corner of the panel.

[Problem to be solved by the invention]

However, in the above-mentioned conventional reinforcement method for cathode ray tubes, both ends of the metal strips are butted against each other, and the abutted portions are joined via the mounting bracket 4, so that the thickness of the mounting bracket 4 (about 1 inch) is As a result, the outer dimensions of the cathode ray tube became larger, which became an obstacle in designing a television set as compact as possible.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, an object of the present invention is to provide a reinforced cathode ray tube in which metal strips are bonded together and reinforced by wrapping without increasing the external dimensions of the cathode ray tube.

[Means to solve the problem]

The object of the present invention is to provide a reinforced cathode ray tube having a metal strip tightly wound around the outer circumferential surface of a panel and a mounting lug to which the metal strip is fixed, by butting both ends of the metal strip, This is achieved by joining the abutting portions via attachment lugs.

[Effect]

Since the metal strips are joined via the mounting lugs, conventional welded fittings are not required, and the problem of increasing the external dimensions of the cathode ray tube due to the welded fittings is eliminated.

[Embodiment] Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 3.

In the figure, 6 is a panel, and 7 is a metal strip, which is wound around the outer peripheral surface of the panel 6 using a heat-resistant tape 8 attached in advance in a heated state as a base.

Then, both ends of the panel 6 are brought into abutted state at the corner part 9 of the panel 6, and this abutted part is joined by welding via the attachment lug 10. Thereafter, by cooling and shrinking the metal strip 7, the outer peripheral surface of the panel is firmly tightened and reinforced.

Note that, if necessary, lugs 11 are attached to the metal strips 7 at other corners of the panel 6 by a conventional method.

〔Effect of the invention〕

According to the present invention described above, metal strips can be wound around the outer peripheral surface of the panel without using conventional welding fittings, so the external dimensions of the cathode ray tube do not increase due to the welding fittings, which makes the television set This has the effect of allowing a compact design.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of a reinforced cathode ray tube according to the present invention, in which Figure 1 is a front view, Figure 2 is a side view, and Figure 3 is an enlarged partial view of section A in Figure 1. 4 are front views showing an example of a conventional reinforced cathode ray tube. 1... Metal strip, 4... Welding fittings,
5...Mounting lug, 6...Panel, 7
...Metal strip, 9...Corner part, 10
．． 11...Mounting lug. Figure 2

Claims (1)

[Claims] 1. In a reinforced cathode ray tube having a metal strip tightly wound around the outer peripheral surface of the panel and a mounting lug fixed to the metal strip, both ends of the metal strip are butted, A reinforced cathode ray tube is characterized in that the butted portions are attached and joined via lugs. 2. The reinforced cathode ray tube according to claim 1, wherein the metal strip is tightened by shrink fitting. 3. The reinforced cathode ray tube according to claim 1, wherein the abutted portion is joined by welding.