JPH03216939A - Image display device - Google Patents

Abstract

PURPOSE:To simplify an insulating means when a display device is assembled in a cabinet and reduce power consumption by providing the insulating means between an electron beam control means and a means fixing the electron beam control means. CONSTITUTION:This device is constituted of an electron beam control means 1, a fixing metal 2 as a means for fixing the electron beam control means 1, a back container 3 made of metal, an insulating bush 4 made of ceramics, an insulating ring 5 made of ceramics, a screw 6, a washer 7, and a nut 8. The insulating bush 4 made of ceramics and the insulating ring 5 made of ceramics are provided between the electron beam control means 1 and the fixing metal 2 as means to insulate both of them. The back container 3 is insulated and can be set to the ground voltage, an insulating means is simplified when this device is assembled in a cabinet, and power consumption can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an image display device for video equipment. 2. Description of the Related Art In recent years, image display devices are desired to have higher image quality and even lower power consumption.

An example of the conventional image display device mentioned above will be described below with reference to the drawings. FIG. 3 shows a cutaway perspective view of a conventional image display device. In FIG. 3, l is an electron beam control means, 2
A to 2c are 1,000-stage electron beam control! 3 is a metal back container, IO is a glass front container, and 11 is a display screen portion formed on the back surface of the front container IO. In the conventional example, a phosphor that emits light with an electron beam is used as the display screen section 11.

FIG. 4 shows a detailed sectional view of the fixed portion of a conventional image display device. In FIG. 4, 1 is an electron beam control means, 2 is a fixture for fixing the electron beam control means 1, 3 is a metal back container, 6 is a screw, 7 is a washer, and 8 is a nut. In this way, conventional image display devices of this type have screws 6 directly connected between the electron beam control means 1 and the 1000 stages 2a to 2c for fixing the 1000 electron beam control stages 1 in the container.
and Nasoto 8 had fixed it using methods such as welding.

Problems to be Solved by the Invention However, in the above configuration, one electrode of the electron beam control means is electrically connected to the metal back case, and when it is installed in the cabinet, it is difficult to sufficiently insulate it from the surroundings. There were issues that needed to be taken into account.

In addition, a large capacitor is formed due to electrical conduction between one electrode of the electron beam control means and the metal back container, which requires a large amount of driving power and increases power consumption. It had

Furthermore, with the above configuration, there is a problem that the electron beam control means is tilted due to dimensional variations in the means for fixing the electron beam control means, and the image is distorted because the distance from the display screen section is not uniform. Was.

Therefore, in order to solve this problem, the present invention provides an image display device that uses simple insulation means and consumes less power when assembled into a cabinet. Another object of the present invention is to provide an image display device that can obtain a uniform image even if there are variations in the dimensions of the means for fixing the electron beam control means.

Still another object of the present invention is to provide a simple means for insulation and low power consumption when assembled in a cabinet, and to obtain a uniform image even if the dimensions of the means for fixing the electron beam control means vary. The purpose is to provide an image display device that can perform Means for Solving the Problems In order to solve the above-mentioned problems, a first aspect of the present invention provides an image display provided with an insulating means between an electron beam control means and a means for fixing the electron beam control means. It is a device.

Further, a second invention of the present invention provides an image display in which an electron beam control means and a means for fixing the electron beam control means are provided with a spring interposed between the electron beam control means and the means for fixing the electron beam control means. It is a device. Furthermore, a third aspect of the present invention provides a means for insulating between the electron beam control means and a means for fixing the electron beam control means, and a means for fixing the electron beam control means and the electron beam control means via a spring. This is an image display device equipped with.

According to the first aspect of the present invention, since the means for insulating is provided between the electron beam control means and the means for fixing the electron beam control means, the means for insulation is simple when assembled into a cabinet notebook. , power consumption can be reduced.

Further, according to the second aspect of the present invention, means for fixing the electron beam control means 11 and the electron beam control means is provided between the electron beam control means and the means for fixing the electron beam control means via a spring. As a result, a uniform image can be obtained even if there are variations in the dimensions of the means for fixing the electron beam control means. Furthermore, according to the third aspect of the present invention, there is provided a means for insulating between the electron beam control means and the means for fixing the electron beam control means, and a means for fixing the electron beam control means and the electron beam control means via a spring. By providing a means for fixing the electron beam control means, the means for insulating the electron beam control means is simple when assembled into a cabinet, consumes less power, and even if there are variations in the dimensions of the means for fixing the electron beam control means, a uniform image can be obtained. It is. Embodiments Hereinafter, image display devices according to embodiments of the present invention will be described with reference to the drawings. Embodiment 1 FIG. 1 shows an electron beam of an image display device according to a first embodiment of the present invention. ! 7 shows a cross-sectional view of the part for fixing the means.

In FIG. 1, 1 is an electron beam control means, 2 is a fixing fitting as a means for fixing the electron beam control means 1, 3 is a metal back container, 4 is an insulating bunonyu made of ceramics, 5 is an insulating ring made of Ceraminox, 6 is a screw, 7 is a washer, and 8 is a nanometer. According to this embodiment, the back container 3 is insulated and grounded by providing the ceramic insulating push 4 and the ceramic insulating ring 5 between the electron beam control means 1 and the fixture 2 as means for insulating both. voltage, and when assembled in the cabinet, the means for insulation is simple and reduces power consumption.

Embodiment 2 FIG. 2 is a sectional view of a portion of an image display device in which an electron beam control means is fixed in a second embodiment of the present invention. In this figure, the same parts as in Figure 1 are given the same numbers and their explanations are omitted. This figure differs from FIG. 1 in that a spring 9 is provided between the electron beam control stage 1 and the ceramic insulating pusher 4. In this embodiment, a disc spring washer is used as the spring 9. This spring can also be made from a coil spring. Therefore, according to this embodiment, in addition to the effects of embodiment 1, even if there are variations in the dimensions of the fixing bracket 2, the distance from the display screen section can be kept constant by adjusting the amount of tightening of the screw 6. An image display device with uniform images can be obtained. Effects of the Invention According to the first aspect of the present invention, since the insulating means is provided between the electron beam control means and the means for fixing the electron beam control means, the insulating means can be removed when assembled into a cabinet. It's simple and reduces power consumption. According to the second aspect of the present invention, the electron beam control means and the means for fixing the electron beam control means are provided with a spring interposed between the electron beam control means and the means for fixing the electron beam control means. This allows uniform images to be obtained even if there are variations in the dimensions of the means for fixing the electron beam control means. The dimensional accuracy of the fixing fittings can also be made looser, making it easier to process. Furthermore, according to the third aspect of the present invention, there is provided a means for insulating between the electron beam control means and the means for fixing the electron beam control means, and a means for fixing the electron beam control means and the electron beam control means via springs. By providing a means for fixing the electron beam control means, the means for insulating the electron beam control means is simple and consumes little power when assembled into a cabinet, and a uniform image can be obtained even if the dimensions of the means for fixing the electron beam control means vary.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a portion that fixes the electron beam control means of an image display device in a first embodiment of the present invention, and FIG. 2 is a sectional view of the electron beam control means of an image display device in a second embodiment of the present invention. 3 is a cutaway perspective view of a conventional image display device, and FIG. 4 is a conventional image display device 1.
FIG.

Claims (3)

[Claims] (1) A container having a display screen part provided in a transparent part, a metal container to be overlapped and sealed with the container, means for fixing an electron beam control means in the container, an electron beam control means, and an electron beam. An image display device comprising means for insulating between the control means and means for fixing the control means. (2) A container having a display screen portion provided in a transparent portion, a metal container to be overlapped and sealed with the container, means for fixing an electron beam control means in the container, and an electron beam control means and the electron beam control means. An image display device comprising: a spring provided between the beam control means and a means for fixing the beam control means. (3) The image display device according to claim 2, further comprising insulating means between the electron beam control means and the means for fixing the electron beam control means.