JPH08287851A - Insulation plate-integrated type crt anode cap, and crt anode cap-installed insulation member - Google Patents

Abstract

PURPOSE: To omit a process of installation work for separately providing a insulation plate by forming a support member extended from an anode cap main body upward, and fixing the insulation plate horizontally at the top part of the support member. CONSTITUTION: An anode terminal 3 of a CRT 2 is formed at a lower part of an anode cap main body 1 comprising an insulation member developed and formed downward like a suction cup, and a connection terminal 4 is electrically connected to this anode terminal 3. To this connection terminal 4, an anode lead 5 extended from the inside of the anode cap main body 1 is electrically connected, a support member 9 is extended and formed from the anode cap main body 1 upward, and an insulation plate 10 is horizontally fixed at the top of the support member 9. A CRT anode cap B in which need of separately providing an insulation plate is eliminated, and in which electric insulation to surrounding parts, etc., can be sufficiently secured can thus be provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulating plate-integrated CRT anode cap and a CRT anode cap mounting type insulating member in an image display device including a CRT as a display means such as a television receiver and a CRT display device.

[0002]

2. Description of the Related Art A CRT (cathode ray tube) is a kind of discharge tube, in which a cathode ray is emitted from an electron gun provided at one end of a vacuum glass tube to a display tube surface provided at the other end, and the cathode ray is horizontally moved. A display device that displays various images on the display tube surface by electromagnetic deflection scanning with a deflection voltage, and a cathode line that has reached the display tube surface excites and causes a phosphor coated on the display tube surface to emit light. Is.

Therefore, in view of its construction principle, a general CRT display device includes a flyback transformer for generating the horizontal deflection voltage, and the horizontal deflection is performed from the flyback transformer to the anode terminal of the CRT via a high voltage cable. Voltage is being supplied.

The horizontal deflection voltage is a voltage of several thousand to tens of thousands of volts, and the inside of the casing of the CRT display device is electrically insulated from surrounding parts and wired. Therefore, the flyback transformer is an anode as a high voltage cable. The horizontal deflection voltage is supplied to the anode terminal of the CRT via a lead, and the anode terminal of the CRT is covered with a CRT anode cap made of an insulating material.

A conventional CRT anode cap will be described with reference to the drawings. FIG. 5 is a side view of a CRT anode cap showing a conventional example, and FIG. 6 is a side view of a CRT anode cap showing the same and other conventional examples.

In the figure, A is a CRT anode cap, 1 is an anode cap body, 2 is a CRT, 3 is an anode terminal, 4 is a connection terminal, 5 is an anode lead, 6 is a display device housing, 7 is an insulating plate, and 8 Is a metal shield plate.

A conventional CRT anode cap A shown in FIG. 5 includes an anode cap body 1 made of an insulating member which is formed in a suction cup-like shape downward, and an anode terminal 3 of a CRT 2 formed below the anode cap body 1. It is composed of a connection terminal 4 that is electrically connected and an anode lead 5 that is electrically connected to the connection terminal 4 and is drawn out from the inside of the anode cap body 1.

At the time of mounting, when the anode cap body 1 of the CRT anode cap A is gripped and the connection terminal 4 of the anode cap A is connected to the anode terminal 3 of the CRT 2, the anode cap body 1 is elastically deformed, and C
The attachment work is completed by covering the RT anode terminal 3.

Furthermore, since electrical insulation is insufficient by itself, a predetermined range of insulating space is provided between the anode cap A and the display device housing 6 and surrounding parts (not shown), and the display device housing 6 is also provided. On the inside,
An insulating plate 7 made of a vinyl chloride sheet or the like is attached to ensure the electrical insulation of the anode cap A.

Further, in another conventional example shown in FIG. 6, a metal shield plate 8 is provided inside the display device housing 6. In this case, unlike the conventional example, the metal shield plate 8 is provided.
The insulating plate 7 is attached to the inner surface.

[0011]

However, the conventional CRT anode cap A has the problems listed below. In other words, the anode terminal 3 of the CRT 2 is a high-voltage charging part, and electrical insulation is insufficient by simply insulating the anode terminal 3 of the CRT 2 with the conventional CRT anode cap A alone. It is necessary to provide a predetermined insulating space in the periphery for air insulation, and to additionally provide an insulating plate 7 or the like to ensure sufficient electrical insulation performance.

Since the insulating plate 7 is adhered to the inner surface of the display device housing 6 or the inner surface of the metal shield plate 8, the insulating plate 7 is disassembled when the display device is disassembled in the energized state for repair or adjustment. Since No. 7 was removed and the anode cap A, which is a high-voltage charging site, was exposed, there was a high risk that a service worker could get a contact electric shock around the anode cap A.

Further, in recent years, display devices having a high-density mounting structure, such as a display device for a personal computer, having a built-in automatic tracking circuit for scanning frequency and the like are increasing in number, and a predetermined insulating space is secured inside the display device housing. Things are getting harder and harder.

Further, since the insulating plate determines the mounting position and shape of the insulating plate 7 in accordance with the internal shape of the display device housing 6 and the mounting position and shape of peripheral parts (not shown),
It is necessary to manufacture the insulating plate 7 having a different shape for each model of the display device, which causes an increase in cost.

Here, an object of the present invention is to provide a CRT anode cap capable of sufficiently ensuring electrical insulation between the anode terminal of the CRT and the display device casing, peripheral parts and the like without separately providing an insulating plate. Especially.

Another object of the present invention is that it can be easily attached to a conventional conventional anode cap, and that the CRT anode terminal can sufficiently secure electrical insulation between the CRT anode terminal and the display device casing, peripheral parts, and the like. An object is to provide a CRT anode cap-mounted insulating member.

[0017]

In order to solve the above problems, the present invention adopts the novel characteristic means as listed below. In other words, the first feature of the present invention is to provide an anode cap body made of an insulating member that is formed downward in a suction cup shape, and a connection terminal that is formed below the anode cap body and is electrically connected to the anode terminal of the CRT. An anode lead electrically connected to the connection terminal and drawn out from the inside of the anode cap body, a support member extending upward from the anode cap body, and horizontally fixed to the top end of the support member. 2 is a CRT anode cap integrated with an insulating plate, which is composed of the above described insulating plate.

A second feature of the present invention is that an attachment member detachably attached to an anode cap or an anode lead of a CRT, a support member extending upward from the attachment member, and a top end of the support member. It is a CRT anode cap mounting type insulating member composed of an insulating plate fixed horizontally.

A third feature of the present invention is that an attachment member detachably attached to an anode cap or an anode lead of a CRT, a support member extending upward from the attachment member, and a top end of the support member. A CRT composed of a detachably horizontally fixed insulating plate
It is an anode cap mounting type insulating member.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will now be described with reference to the drawings. FIG. 1 is an overall perspective view of an insulating plate integrated CRT anode cap of the present embodiment. In the figure, B is an insulating plate integrated CRT anode cap, 9 is a supporting member, and 10 is an insulating plate. The same members as those in the conventional example are designated by the same reference numerals.

Insulating plate integrated CRT of this embodiment shown in FIG.
The anode cap B includes an anode cap body 1 formed of an insulating member that is formed in a suction cup shape downward, a connection terminal 4 formed below the anode cap body 1, and electrically connected to an anode terminal 3 of a CRT 2. An anode lead 5 that is electrically connected to the connection terminal 4 and is drawn out from the inside of the anode cap body 1, and a support member 9 that extends upward from the anode cap body 1.
And the insulating plate 10 fixed horizontally to the top end of the supporting member.
It consists of and.

At the time of mounting, the anode cap body 1 of the insulating plate-integrated CRT anode cap B is gripped, and the connection terminal 4 of the insulating plate-integrated anode cap B is connected to C.
When connected to the anode terminal 3 of the RT2, the anode cap body 1 is elastically deformed and covers the anode terminal 3 of the CRT, whereby the mounting work is completed.

FIG. 3 is a side view showing a second embodiment of the present invention in which the CRT anode cap mounting type insulating member is mounted on the CRT anode cap. In the figure, C is a CRT anode cap mounting type insulating member, and 11 is an attachment member. The same members as those in the first embodiment are designated by the same reference numerals.

The CRT anode cap mounting type insulating member C shown in FIG. 5 is formed with a horseshoe-shaped clamper 11a elastically biased inward so as to clamp the anode cap A of the CRT 2 or the anode lead 5 from both sides. It is composed of an attachment member 11, a support member 9 extending upward from the attachment member 11, and an insulating plate 8 horizontally fixed to the top end of the support member 9.

Before mounting, the conventional CRT anode cap A is mounted on the anode terminal 3 of the CRT 2 in advance, and then the CRT anode cap mounting type insulating member D is attached.
The attachment work is completed by gripping the support member 9 and holding the attachment member 12 in the upper part of the anode cap body 1.

FIG. 4 is a side view showing a third embodiment of the present invention in which a CRT anode cap mounting type insulating member is mounted on a CRT anode cap. In the figure, D is a CRT anode cap mounting type insulating member, and 12 is an attachment member. The same members as those in the first and second embodiments are designated by the same reference numerals.

The CRT anode cap mounting type insulating member D shown in FIG. 4 has an attachment member 12 having a through hole 12a through which the anode cap A of the CRT 2 or the anode lead 5 penetrates, and an upper portion of the attachment member 12. The protrusion 9a is formed to extend toward the top.
And a supporting member 9 formed with the above, and an insulating plate 8 that is horizontally fixed and has a through hole 10a that can be fitted into the projecting portion 9a at the top end of the supporting member 9.

[0028]

As described above, in the CRT anode cap integrated with the insulating plate of the present invention, since the CRT anode cap and the insulating plate are integrally formed, it is not necessary to separately provide the insulating plate, and the insulating plate is not necessary. The installation work process can be omitted, and the work cost can be reduced.

Further, the CRT anode cap attachment type insulating member of the present invention can be easily attached to a conventional CRT anode cap of a conventional form, and has an advantage that it can be used as a general-purpose component.

Furthermore, conventionally, the insulating plate, which has been processed and attached to a specific shape by being restricted by the shape of the display device casing and the positions and shapes of the peripheral parts, can be attached without these restrictions. There is an advantage that sufficient electrical insulation performance can be ensured regardless of the shape of surrounding parts.

In addition to this, since the insulating plate is attached to the anode cap, not to the display device housing, when the display device is disassembled due to service work or adjustment work, it is placed around the anode cap of the CRT which is a high voltage charging part. It is possible to prevent the occurrence of electric shock accidents of service workers due to contact with them, and to exhibit high safety.

[Brief description of drawings]

FIG. 1 is an insulating plate integrated CRT showing a first embodiment of the present invention.
It is a side view of an anode cap.

FIG. 2 is an overall perspective view of the same.

FIG. 3 is a side view showing a state where a CRT anode cap-attached type insulating member according to a second embodiment of the present invention is attached to a CRT anode cap.

FIG. 4 is a side view showing a state where a CRT anode cap-attached type insulating member according to a third embodiment of the present invention is attached to a CRT anode cap.

FIG. 5 is a side view of a CRT anode cap showing a conventional example.

FIG. 6 is a side view of a CRT anode cap showing the above-mentioned other conventional example.

[Explanation of symbols]

 A CRT anode cap B Insulation plate mounting type CRT anode cap C, D CRT Anode cap mounting type insulating member 1 Anode cap body 2 CRT 3 Anode terminal 4 Connection terminal 5 Anode lead 6 Display device housing 7 Insulation plate 8 Metal shield plate 9 Support member 10 Insulation plate 11, 12 Attachment member

Claims (3)

[Claims] 1. An anode cap body made of an insulating member that is formed in a suction cup-like shape downward, a connection terminal formed under the anode cap body and electrically connected to an anode terminal of a CRT, and an electrical connection to the connection terminal. The anode cap body connected to the anode cap body, the support member extending upward from the anode cap body, and the insulating plate horizontally fixed to the top end of the support member. A CRT anode cap integrated with an insulating plate, which has been characterized. 2. An attachment member detachably attached to an anode cap or an anode lead of a CRT, a support member extending upward from the attachment member, and an insulating plate horizontally fixed to a top end of the support member. A CRT anode cap mounting type insulating member comprising: 3. An attachment member that is detachably attached to an anode cap or an anode lead of a CRT, a support member that extends upward from the attachment member, and a top end of the support member that is detachably horizontally fixed. And a CRT anode cap mounting type insulation member.