JP2007317395A - Cathode-ray tube device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce possibility of human hand touching a horizontal terminal, in assembly process. <P>SOLUTION: A deflection yoke 4 comprises a horizontal deflection coil, a vertical deflection coil 12, a ferrite core 13, an insulating frame 14 for insulating the horizontal deflection coil from the vertical deflection coil 12, a horizontal terminal 17 with its one end of windings of the horizontal deflection coil fixed, a horizontal lead wire 15 with its one end fixed to the horizontal terminal 17 and supplying horizontal deflection current to the horizontal deflection coil, and a terminal board 19 for retaining the horizontal terminal 17. The terminal 17 is so arranged so as not to be touched readily by human hand, without having to use a member that covers the horizontal terminal, other than the terminal board 19 and the insulating frame 14. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cathode ray tube apparatus having a deflection yoke.

  As shown in FIG. 4, the deflection yoke mounted on the cathode ray tube includes a horizontal deflection coil (not shown) for generating a horizontal deflection magnetic field for horizontal deflection, and a vertical deflection coil 32 for generating a vertical deflection magnetic field for vertical deflection. A ferrite core 33 for strengthening the horizontal and vertical deflection magnetic field, an insulating frame 34 for insulating the horizontal deflection coil and the vertical deflection coil 32, a horizontal lead wire 35 for supplying a horizontal deflection current to the horizontal deflection coil, a vertical deflection A vertical lead wire 36 for supplying a vertical deflection current to the coil 32, a winding of the horizontal deflection coil and a horizontal terminal 37 for connecting the horizontal lead wire 35 and electrically connecting them, and a winding of the vertical deflection coil 32 And a vertical terminal 38 for vertically connecting the vertical lead wires 36 to electrically connect them, a horizontal terminal 37, and a terminal plate 39 for holding the vertical terminals 38.The horizontal terminal 37 and the vertical terminal 38 are erected on the terminal plate 39 so as to protrude to the side opposite to the insulating frame 34 (see, for example, Patent Document 1).

  In general, since the horizontal deflection voltage applied to the horizontal deflection coil is a high voltage of 1 kV or more, when the deflection yoke is attached to the cathode ray tube, an electric shock is received when an operator touches the horizontal terminal 37. In order to prevent this, the horizontal terminal 37 is covered with an insulating resin tube 40 made of a heat-shrinkable material. In the manufacturing process of the deflection yoke, after winding the horizontal deflection coil and the horizontal lead wire 35 to the horizontal terminal 37 and soldering, the resin tube 40 is covered and heated so that the resin tube 40 is in close contact with the horizontal terminal 37. Let it fix. Thereby, since the horizontal terminal 37 is covered with the resin tube 40, an operator does not touch the horizontal terminal 37 directly.

Alternatively, as shown in FIG. 5, a resin cover 41 for preventing electric shock that covers the horizontal terminals 37 and the vertical terminals 38 may be attached to the terminal plate 39 (see, for example, Patent Document 2).
Japanese Utility Model Publication No. 55-108648 JP-A-9-213237

  However, the method of covering the horizontal terminal 37 with the resin tube 40 made of a heat-shrinkable material is to add the material cost of the resin tube 40, use a high power consumption device such as a dryer for heating, or cover the resin tube 40. There has been a problem that the cost of the cathode ray tube apparatus is increased due to an increase in the heating process and the like.

  Further, the method of attaching the cover 41 has a problem that the cost of the cathode ray tube apparatus is also increased due to the creation and attachment of the cover 41.

  An object of the present invention is to solve the above-described conventional problems, and to provide an inexpensive cathode-ray tube apparatus in which the possibility of manual contact with a horizontal terminal in an assembly process is reduced.

  A cathode ray tube apparatus according to the present invention includes a phosphor screen, a cathode ray tube including an electron gun that emits an electron beam toward the phosphor screen, and a deflection yoke mounted on an outer peripheral surface of the cathode ray tube. .

  The deflection yoke includes a horizontal deflection coil for generating a horizontal deflection magnetic field for deflecting the electron beam in a horizontal direction, a vertical deflection coil for generating a vertical deflection magnetic field for deflecting the electron beam in a vertical direction, a ferrite core, and the horizontal deflection. An insulating frame that insulates the coil from the vertical deflection coil, a horizontal terminal to which one end of the winding of the horizontal deflection coil is fixed, and one end of the winding that is fixed to the horizontal terminal and a horizontal deflection current to the horizontal deflection coil. A horizontal lead wire to be supplied; and a terminal plate for holding the horizontal terminal.

  The horizontal terminal is arranged so as not to be easily touched by human hands without using a member covering the horizontal terminal other than the terminal plate and the insulating frame.

  According to the present invention, it is possible to reduce the possibility that the horizontal terminal is touched manually without using a conventional heat-shrinkable tube or cover, so that the assembly process can be inexpensively performed without increasing the number of parts and man-hours. It is possible to ensure the safety of the horizontal terminal.

  In the above-described cathode ray tube device of the present invention, it is preferable that the horizontal terminal does not substantially protrude from the terminal plate on the opposite side to the central axis of the deflection yoke. As a result, it is possible to easily realize a state in which a human hand cannot easily touch the horizontal terminal.

  The horizontal terminal is preferably bent toward the central axis of the deflection yoke with respect to the terminal plate. Accordingly, it is possible to realize a state in which a human hand cannot easily touch the horizontal terminal easily and at a low cost without using a member that covers the horizontal terminal other than the terminal plate and the insulating frame.

  Hereinafter, the present invention will be described with reference to embodiments.

  FIG. 1 is a half sectional view showing a schematic configuration of an example of a cathode ray tube apparatus according to the present invention.

  As shown in FIG. 1, the cathode ray tube apparatus includes a cathode ray tube having an envelope to which a front panel 1 and a funnel 2 are joined, and a deflection yoke 4 mounted on the outer peripheral surface of the funnel 2 of the cathode ray tube. Is provided. A phosphor screen 1A is formed on the inner surface of the front panel 1, and an electron gun 6 that emits an electron beam 7 toward the phosphor screen 1A is housed in the neck 3 which is the finest detail of the funnel 2. ing.

  A deflection yoke 4 is mounted on the outer peripheral surface of the portion where the outer diameter changes between the junction between the funnel 2 and the front panel 1 and the neck portion 3. The deflection yoke 4 includes a saddle type horizontal deflection coil 11, a toroidal type vertical deflection coil 12, a ferrite core 13, and an insulating frame 14. The horizontal deflection coil 11 emits a horizontal deflection magnetic field that deflects the electron beam 7 in the horizontal direction, and the vertical deflection coil 12 emits a vertical deflection magnetic field that deflects the electron beam 7 in the vertical direction. The ferrite core 13 strengthens the horizontal deflection magnetic field and the vertical deflection magnetic field. The insulating frame 14 is made of a resin material and is disposed between the horizontal deflection coil 11 and the vertical deflection coil 12 to maintain an electrical insulation state between the horizontal deflection coil 11 and the vertical deflection coil 12. Both deflection coils 11 and 12 are supported.

  The electron beam 7 emitted from the electron gun 6 is deflected in the horizontal direction and the vertical direction by the horizontal deflection magnetic field and the vertical deflection magnetic field, and scans on the phosphor screen 1A.

  On the outer peripheral surface of the neck portion 3, a CPU (Convergence and Purity Unit) 5 is provided for performing static convergence adjustment and purity adjustment of the electron beam at the center of the screen. The CPU 5 includes 2-pole, 4-pole, and 6-pole magnet rings that apply a magnetic field to the electron beam, and is mounted on the outer peripheral surface of the neck portion 3 of the funnel 2 in which the electron gun 6 is built.

  FIG. 2 is an external perspective view of the deflection yoke during assembly. A flat terminal plate 19 is fixed to the insulating frame 14 substantially parallel to the central axis Z of the deflection yoke 4 (which coincides with the tube axis of the cathode ray tube on which the deflection yoke 4 is mounted). The surface on the side of the central axis Z of the terminal board 19 is referred to as a back surface, and the surface opposite to the central axis Z is referred to as a front surface. Two horizontal terminals 17 and three vertical terminals 18 are erected on the surface of the terminal board 19. The two horizontal terminals 17 are located at both ends of the terminal board 19. One end (winding start end or winding end end) of the winding of the horizontal deflection coil 11 and one end of the horizontal lead wire 15 for supplying a horizontal deflection current to the horizontal deflection coil 11 are connected to each horizontal terminal 17. One end (winding start end or winding end end) of the winding of the vertical deflection coil 12 and one end of the vertical lead wire 16 for supplying a vertical deflection current to the vertical deflection coil 12 are connected to each vertical terminal 18. In this state, the horizontal terminals 17 and the vertical terminals 18 are simultaneously immersed in the solder bath and soldered. Thereby, the winding of the horizontal deflection coil 11 and the horizontal lead wire 15 are electrically connected on the horizontal terminal 17, and at the same time, the winding of the vertical deflection coil 12 and the vertical lead wire 16 on the vertical terminal 18. Are electrically connected. In this state, since the horizontal terminal 17 and the vertical terminal 18 protrude on the surface of the terminal board 19, there is a high possibility that the horizontal terminal 17 and the vertical terminal 18 will be easily touched by human hands. The above is almost the same as the assembly of the conventional deflection yoke.

  In the present invention, thereafter, as shown in FIG. 3, the horizontal terminal 17 is folded back to the back side of the terminal board 18 by about 180 degrees. As a result, the horizontal terminal 17 does not substantially protrude from the surface side of the terminal plate 18. Although the horizontal terminal 17 protrudes on the back surface side of the terminal board 18, it is unlikely that a human hand touches the horizontal terminal 17 protruding on the back surface side of the terminal board 18. Therefore, without attaching the resin tube 40 and the resin cover 41 as in the prior art, the horizontal terminal 17 can be made in a state that cannot be easily touched by human hands.

  A notch 20 is formed at the side edge of the terminal board 18 near the position where the horizontal terminal 17 is installed, and the horizontal terminal 17 is inserted into the notch 20 when the horizontal terminal 17 is folded back to the back side of the terminal board 18. May be stored. Thereby, the possibility that a human hand touches the horizontal terminal 17 can be further reduced.

  Further, a groove 21 for guiding the winding of the horizontal deflection coil 11 and / or the horizontal lead wire 15 is formed in the insulating frame 14 on the back surface side of the terminal plate 18, and the horizontal terminal 17 is folded back to the back surface side of the terminal plate 18. At this time, the horizontal terminal 17 may be accommodated in the groove 21. Thereby, the possibility that a human hand touches the horizontal terminal 17 can be further reduced.

  The field of use of the present invention is not particularly limited, and can be widely used for cathode ray tube devices used for televisions, computer displays, and the like.

FIG. 1 is a half sectional view of a cathode ray tube apparatus according to an embodiment of the present invention. FIG. 2 is a perspective view showing a state in the middle of assembly of the deflection yoke mounted on the cathode ray tube apparatus according to the embodiment of the present invention. FIG. 3 is a perspective view of a deflection yoke mounted on the cathode ray tube apparatus according to one embodiment of the present invention. FIG. 4 is a perspective view of an example of a conventional deflection yoke. FIG. 5 is a perspective view of another example of a conventional deflection yoke.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Front panel 1A ... Phosphor screen 2 ... Funnel 3 ... Neck part 4 ... Deflection yoke 5 ... CPU (Convergence and Purity Unit)
6 ... Electron gun 7 ... Electron beam 11 ... Horizontal deflection coil 12 ... Vertical deflection coil 13 ... Ferrite core 14 ... Insulating frame 15 ... Horizontal lead wire 16 ... Vertical lead wire 17 ... Horizontal terminal 18 ... Vertical terminal 19 ... Terminal plate 20 ... Notch 21 ... Groove 32 ... Vertical deflection coil 33 ... Ferrite core 34 ... Insulating frame 35 ... Horizontal lead wire 36 ... Vertical lead wire 37 ... Horizontal terminal 38 ... Vertical terminal 39 ... Terminal plate 40 ... Heat-shrinkable resin tube 41 ... cover

Claims (3)

A cathode ray tube device comprising: a phosphor screen; a cathode ray tube comprising an electron gun that emits an electron beam toward the phosphor screen; and a deflection yoke mounted on the outer peripheral surface of the cathode ray tube,
The deflection yoke includes a horizontal deflection coil for generating a horizontal deflection magnetic field for deflecting the electron beam in a horizontal direction, a vertical deflection coil for generating a vertical deflection magnetic field for deflecting the electron beam in a vertical direction, a ferrite core, and the horizontal deflection. An insulating frame that insulates the coil from the vertical deflection coil, a horizontal terminal to which one end of the winding of the horizontal deflection coil is fixed, and one end of the winding that is fixed to the horizontal terminal and a horizontal deflection current to the horizontal deflection coil. A horizontal lead wire to be supplied and a terminal plate for holding the horizontal terminal;
A cathode ray tube device characterized in that the horizontal terminals are arranged so as not to be easily touched by human hands without using a member covering the horizontal terminals other than the terminal plate and the insulating frame.   2. The cathode ray tube apparatus according to claim 1, wherein the horizontal terminal does not substantially protrude to a side opposite to a center axis of the deflection yoke with respect to the terminal plate.   2. The cathode ray tube device according to claim 1, wherein the horizontal terminal is bent toward the central axis of the deflection yoke with respect to the terminal plate.

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