KR19990087856A - Deflection unit for displayer - Google Patents

Abstract

The present invention discloses a deflector of a display.

The present invention includes a cathode ray tube formed of a neck compartment partitioned with a fluorescent film-coated screen and an electron gun; A deflecting means inserted into the neck of the cathode ray tube and having a neck portion formed with a screw thread on an outer circumferential surface thereof to deflect the scanned electron beam from the electron gun; A screw thread is formed on the inner circumferential surface to be screwed to the neck portion of the deflection means, and a tightening ring presses to reduce the inner diameter of the neck portion of the deflection means while being moved toward the screen of the cathode ray tube by a rotation operation. Deflection means for deflecting the scanned electron beam toward the screen of the cathode ray tube, that is, deflection yoke and convergence yoke and the like, can be stably fixed through the tightening ring.

Therefore, the deterioration of the image quality can be prevented in advance through the deflection of the stable electron beam, thereby improving the reliability of the display adopting the same.

In addition, fixing screws or fastening tools are unnecessary for fixing the position of the deflection means, so that the unit cost can be reduced by reducing the number of parts, and the position of the deflection means can be fixed by rotating the tightening ring to improve workability. There is an advantage to this.

Description

Deflection unit for displayer

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display, and more particularly, to a deflecting device for deflecting an electron beam scanned from an electron gun mounted on a neck of a cathode ray tube (CRT).

1 and 2 illustrate a TV receiver which is most widely used among display apparatuses.

This is largely classified into a cathode ray tube 1, a deflection means, and a fastening ring. The cathode ray tube 1 is formed of glass, and a screen 2 coated with a fluorescent film (not shown) is located on the front side, and a rear side. The neck 4 in which the electron gun 3 is built is located.

The neck 4 of the cathode ray tube 1 is provided with deflection means for precisely focusing the electron beam scanned from the electron gun 3 onto the fluorescent film coated on the screen 2.

The deflection means includes a deflection yoke 5 inserted into the outer circumferential surface of the neck 4 and a convergence yoke 6 inserted into the rear neck 4 of the deflection yoke 5.

At this time, the deflection yoke 5 is applied to the screen 2 of the cathode ray tube 1 by deflecting the electron beam scanned from the electron gun 3 in the vertical and horizontal directions through the vertical and horizontal deflection coils wound on the inner and outer circumferential surfaces thereof. The electron beam is focused on the film so as to reproduce the image.

The convergence yoke 6 also serves to perform the convergence adjustment to focus the electron beam scanned from the electron gun 3 precisely in the center of the screen 2.

On the other hand, these deflection means, i.e., the deflection yoke 5 and the convergence yoke 6, must be firmly held on the neck 4 of the cathode ray tube 1.

For this purpose, the yoke clamp 7 is provided as shown in FIGS. 1 and 2 as a means for fixing the deflection yoke 5 and the convergence yoke 6 to the neck 4 of the cathode ray tube 1. .

That is, each of the deflection yoke 5 and the convergence yoke 6 constituting the aforementioned deflection means are provided with neck portions 5a and 6a which can be inserted into the neck 4 of the cathode ray tube 1. The deflection yoke 5 and the convergence yoke 6 are connected to the neck 4 of the cathode ray tube 1 by fastening the yoke clamp 7 on the neck portions 5a and 6a through the set screw S. To fix the position.

However, in such a deflection apparatus of the conventional display, the neck 4 of the cathode ray tube 1 is provided with the deflection yoke 5 and the convergence yoke 6 which constitute the deflection means through the tightening ring, that is, the yoke clamp 7. In the process of fixing the position in the) is caused a thread wear of the fixing screw (S) is fastened to the yoke clamp (7) there is a problem that the stable clamping is not made.

In addition, in the process of pressing and fixing the neck portions 5a and 6a of the deflection yoke 5 and the convergence yoke 6 to the neck 4 of the cathode ray tube 1 through the fixing screw S and the yoke clamp 7. Partly intensive load is applied to the neck 4 of the cathode ray tube 1, and thus there is a problem of causing the neck 4 of the glass cathode ray tube 1 to be broken.

In addition, it is inconvenient to require a separate fastening tool to tighten the yoke clamp 7 through the fixing screw S, and in particular, it is difficult to fasten with a uniform force in the process of tightening the fixing screw S through the fastening tool. The problem is caused.

Accordingly, since the deflection means is easily flowed by an external impact or the like, the deflection of the electron beam cannot be made correctly, resulting in deterioration of image quality and deterioration of product reliability.

The present invention was created in order to solve such problems in the related art, and can display the deflection means precisely positioned on the neck of the cathode ray tube, thereby improving image quality through a stable deflection operation of the electron beam. The purpose is to provide a deflection device of the.

1 is a schematic side view showing a deflection device of a conventional display;

2 is a cross-sectional view of the main portion of the deflection device of the conventional display;

3 and 4 are schematic side views showing various embodiments of the deflecting means in the deflector of the display according to the present invention;

5 is a perspective view of an excerpt of a deflector of the display device according to the present invention;

6 is a cross-sectional view showing a coupling state between the deflection means and the tightening ring in the deflector of the display according to the present invention.

<Description of the symbols for the main parts of the drawings>

100: cathode ray tube 110: (cathode ray tube) screen

120: neck of the cathode ray tube 200 deflection means

201: deflection yoke 202: convergence yoke

210: neck portion (of deflection means) 211,310: thread

212, 311: tapered surface 213: protrusion

300: tightening ring 320: handle

330: border

In order to achieve the above object, the deflector of the display device according to the present invention comprises: a cathode ray tube formed by a screen in which a fluorescent film is coated and a necked compartment having an electron gun; Deflection means inserted into the neck of the cathode ray tube and having a neck portion formed with a screw thread on an outer circumferential surface thereof to deflect the scanned electron beam from the electron gun; A screw thread is formed on an inner circumferential surface to be screwed to the neck portion of the deflection means, and a tightening ring for pressing the neck portion of the deflection means to reduce the inner diameter while being moved toward the screen of the cathode ray tube by a rotation operation. It is characterized by.

Such a characteristic configuration and the resulting effects of the present invention will become more apparent from the following detailed description of the invention with reference to the accompanying drawings.

3 and 4 are side views showing various embodiments of the deflector of the display device according to the invention, Figure 5 is a perspective view of the main portion of the deflector of the display device according to the invention, Figure 6 is a biasing means and tightening means It is sectional drawing which showed the coupling state of.

As shown therein, the deflector of the display according to the present invention is largely classified into a cathode ray tube 100, a deflection means 200, and a fastening ring 300.

The cathode ray tube 100 is formed by partitioning the screen 110 and the neck 120. Although not shown, a fluorescent film is coated on the screen 110, and an electron gun 121 for scanning an electron beam is embedded on the neck 120. Is installed.

The deflecting means 200 serves to deflect the electron beam scanned from the electron gun 121 toward the screen 110. In particular, the deflecting means 200 has a cylindrical neck portion to be inserted into the neck 120 of the cathode ray tube 100. 210 is provided. At this time, the thread 211 is formed on the neck portion 210 of the deflection means 200 within a predetermined range.

On the other hand, as the deflection means 200, a deflection yoke 201 for deflecting the electron beam in the vertical and horizontal directions as shown in FIG. 3 may be used, or as shown in FIG. Convergence yoke 202 may be used that concentrates and centers on the center plane of the X, i.e., performs a convergence operation.

In addition to being employed in a very small cathode ray tube 100, the deflection yoke 201 and the convergence yoke 202 integrated with each other may be used.

The tightening ring 300 described above is located at the neck portion 210 of the deflection means 200 and is transferred toward the screen 110 of the cathode ray tube 100 while the inner diameter of the neck portion 210 of the deflection means 200 is increased. Pressurizing to reduce, in particular, the inner circumferential surface is formed with a thread 310 to be screwed to the outer circumferential surface of the neck portion 210 of the deflection means (200).

Meanwhile, in order to press the fastening ring 300 toward the screen 110 of the cathode ray tube 100 so that the diameter of the neck portion 210 of the deflection means 200 is reduced, the deflection means 200 is reduced. It is preferable that the outer peripheral surface of the neck portion 210 and the inner peripheral surface of the corresponding tightening ring 300 to form a tapered surface (212,311) inclined toward the screen 110 of the cathode ray tube 100 from the outer end thereof. .

In addition, in order to smoothly perform the rotation operation of the tightening ring 300, it may be more preferable to further provide a plurality of handles 320 on the outer peripheral surface of the tightening ring (300).

On the other hand, the deflection means 200 by the impact from the outside in the state in which the neck portion 210 of the deflection means 200 is fixed to the neck 120 of the cathode ray tube 100 through the tightening ring 300 as described above. It is necessary to prevent the position of.

To this end, as shown in FIG. 5, the edge 330 and the protrusion 213 are respectively provided on the outer circumferential surface of the tightening ring 300 and the rear end of the neck portion 210 of the biasing means 200 to insert the adhesive. It is preferable to form the input space for the.

An example of the operation of the deflector of the display device according to the present invention having such a configuration, that is, the fixing of the deflection means 200 to the neck 120 of the cathode ray tube 100 will be described in detail as follows.

First, the neck portion 210 of the deflection means 200 is inserted into the neck 120 of the cathode ray tube 100, and then the fastening ring 300 is screwed into the neck portion 210 of the deflection means 200. .

At this time, the tightening ring 300 is temporarily assembled to the neck portion 210 of the deflection means 200, and the deflection means 200 rotates and flows through applying a slight force at the neck 120 of the cathode ray tube 100. It is possible.

Therefore, it is possible to stably adjust the deflection state of the electron beam through an operation of rotating and flowing the deflection means 200, for example, the deflection yoke 201 or the convergence yoke 202.

As such, when the deflection state of the electron beam is stably adjusted, and then the tightening ring 300 is further rotated through the handle 320, the tightening ring 300 is the screen 110 of the cathode ray tube 100 as shown in FIG. 6. The deflecting means 200 is the neck of the cathode ray tube 100 through pressure close contact between the tightening ring 300 and the inclined tapered surfaces 212 and 311 of the neck portion 210 of the deflection means 200. It is firmly positioned and fixed to 120.

In addition, at this point, the edge 330 formed on the outer circumferential surface of the tightening ring 300 and the protrusion 213 formed on the neck portion 210 of the deflection means 200 are in a state of being joined to each other to insert a space into which an adhesive can be put. To form.

Therefore, when the adhesive is introduced into the space portion, the deflection means 200 pressurized by the tightening ring 300 is completely fixed to the neck 120 of the cathode ray tube 100 to shock or physical force from the outside The position does not change even by the addition.

On the other hand, the above-described embodiment is merely described one preferred embodiment of the present invention, the scope of application of the present invention is not limited to such, and can be changed as appropriate within the scope of the same idea. For example, the shape and structure of each component shown in the embodiment of the present invention can be modified.

According to the deflector of the display according to the present invention as described above, the deflecting means for deflecting the electron beam scanned from the electron gun toward the screen of the cathode ray tube, that is, the deflection yoke and the convergence yoke, etc. are stably fixed through the tightening ring. Will be.

Therefore, the deterioration of the image quality can be prevented in advance through the deflection of the stable electron beam, thereby improving the reliability of the display adopting the same.

In addition, fixing screws or fastening tools are unnecessary for fixing the position of the deflection means, so that the unit cost can be reduced by reducing the number of parts, and the position of the deflection means can be fixed by rotating the tightening ring to improve workability. There is an advantage to this.

Claims (7)

A cathode ray tube formed of a necked compartment having a screen coated with a fluorescent film and an electron gun embedded therein; Deflection means inserted into the neck of the cathode ray tube and having a neck portion formed with a screw thread on an outer circumferential surface thereof to deflect the scanned electron beam from the electron gun; A screw thread is formed on an inner circumferential surface to be screwed to the neck portion of the deflection means, and a tightening ring for pressing the neck portion of the deflection means to reduce the inner diameter while being moved toward the screen of the cathode ray tube by a rotation operation. Display device deflection device. The deflecting device of claim 1, wherein the deflection means is a deflection yoke for deflecting the electron beam scanned from the electron gun vertically and horizontally. 2. The deflector of claim 1, wherein the deflection means is a convergence yoke which performs convergence so that the electron beam scanned from the electron gun is concentrated at the center of the screen of the cathode ray tube. 2. The apparatus of claim 1, wherein the deflection means comprises: a deflection yoke for deflecting vertically and horizontally of the electron beam scanned from the electron gun; And a convergence yoke integrally connected to the rear side of the deflection yoke and performing convergence so that the electron beam scanned from the electron gun is concentrated at the center of the screen of the cathode ray tube. 2. The deflector of claim 1, wherein an outer circumferential surface of the deflecting means and an inner circumferential surface of the tightening ring form a tapered surface inclined toward the screen side of the cathode ray tube. The deflector of claim 1, wherein a handle for smoothly rotating the outer ring is further provided on an outer circumferential surface of the tightening ring. The protrusion and the edge of claim 1, wherein the protrusion and the edge form a space for inserting the adhesive on the outer circumferential surface of the tightening ring and the rear end of the neck portion of the biasing means, based on the fixed position of the biasing means through the tightening ring. Display device deflection apparatus characterized in that each provided.