JPH03274985A - Degaussing coil mount device - Google Patents

Abstract

PURPOSE:To improve reliability to the safety by containing a degaussing coil between a mask inner face and a cathode ray tube. CONSTITUTION:Regulation ribs 12, 13 and an injection molding gate 14 are provided to a recessed part of a mask inner face of a front cabinet 10, a degaussing coil 7 is inserted inbetween, a cathode ray tube 3 is placed on the mask inner face and mounted. The degaussing coil 7 is fitted and fixed by the ribs 12, 13, the molding gate 14 and the glass face of the cathode ray tube 3.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for mounting a degaussing coil used in display devices using cathode ray tubes such as televisions and displays.

BACKGROUND OF THE INVENTION In recent years, in display devices using cathode ray tubes, there has been a problem that metal parts inside the device are magnetized, causing color shift and blurring of characters 0 and the like on the display surface. Viewers and operators demanded that the viewing difficulties be eliminated, and equipment manufacturers responded by installing degaussing coils near cathode ray tubes.

This has the function of sending a current into the coil when the power switch is turned on and canceling the magnetized state.

The installation of the degaussing coil will be described below with reference to FIGS. 6 to 8 for a conventional example of the device.

As shown in the figure, the outer shell of 1 display device 1 consists of a front cabinet 2 made of plastic molding.
A cathode ray tube 3 was placed inside, the opening was covered with a mask 4, and the four corners were fixed with screws 6. At this time, Fi and wire fixing fittings 6 were simultaneously attached to each corner using joint tightening K. And demagnetized carp tv 7
It is formed by winding F1 wire into a ring shape many times, and is separated from a portion for connection, and a connector 8 for connection is provided at the tip. Further, the outer periphery of the ring-shaped wire rod is wrapped with two or three layers of insulating adhesive tape for safety.

To install the degaussing coil A/7, use the wire stopper 6 that was tightened when fixing the cathode ray tube 3, and then tighten the wire stopper 6 near each corner.
I'm doing it by folding it. By the above operations, the demagnetized carp A/7#-1t is fixed near the negative FMS tube 3.

Problems to be Solved by the Invention In such a conventional degaussing coil installation device, the degaussing coil lv7 is fixed with a wire fixing fitting 6 co-aligned with the cathode ray tube 3, which is expensive and has good workability. There wasn't.

Further, the position regulation of the demagnetizing coil A/7 was dependent on the bending of the wire stopper 6, and was therefore unstable. Furthermore, in order to achieve miniaturization, other electrically conductive components with exposed edges are placed nearby inside the device, which poses safety and reliability problems. The present invention solves the above problems, and aims to provide a degaussing coil mounting device that is structurally simple, low cost, and highly safe.

Means for Solving the Problems In order to achieve the above object, the present invention provides a rib and an injection molding gate in the recessed part of the inner surface of the mask of the front cabinet, inserts a degaussing coil therebetween, and mounts the cathode ray tube on the inner surface of the mask. From this point on, the degaussing coil is fixed to the ribs, the molding gate, and the glass surface of the cathode ray tube.

Operation The present invention has the above-described structure, and by sandwiching the degaussing coil between the rib and the molding gate, the position of the degaussing coil is regulated in the horizontal and vertical directions, and the position is regulated in the front and back directions on the glass surface of the cathode ray tube. is possible to complete.

EXAMPLE Hereinafter, installation of a degaussing coil according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6. Note that the same parts as in the conventional example are given the same numbers and detailed explanations are omitted. As shown in the figure, a recess on the outer periphery of a mask 11 provided inside a front cabinet 10, which is the outer shell of the display device 1, has a regulating rib 12, and a cathode ray tube 3 regulator integrally molded on the inner wall of the front cabinet 10. A plurality of ribs 13 and molding gates 14 are installed. The demagnetizing carp/L/7 is sandwiched between the regulating ribs 12, 13 and the gate 14, and its movement in the left and right and up and down directions is restricted.

Furthermore, attach the cathode ray tube 3 to the front cabinet (front cabinet) 10 with screws 6.4.
A lead portion 16 having a connector 8 at the tip separated from the ring-shaped degaussing coil A/7 is pulled out from the gap between the cathode ray tube 3 and the front cabinet (front cabinet) 10. In the upper part, there is a negative Fjia tube a regulating rib 13. A degaussing coil/L/7 is housed in a recess surrounded by the glass surface 16 of the gate 14° cathode ray tube 3. Further, in the lower part, the regulating rib 12. Cathode ray tube 3 regulation rib 13
．． It is regulated by the glass surface 16 of the cathode ray tube 3 and mounted.

Effects of the Invention According to the present invention, the degaussing coil is fixed by providing a regulating rib and a gate part in the recessed part of the inner surface of the mask in the front cabinet, sandwiching the degaussing coil therebetween, and attaching a lever pipe, resulting in a simple structure. It can be done cheaply. Also,
Work efficiency is good because the work is completed rather than the hassle of inserting the degaussing coil in the front cabinet separately.

Further, since the degaussing coil is housed in the recess on the inner surface of the mask, it will not be damaged by other parts, making it possible to provide a highly reliable degaussing coil attachment device.

[Brief explanation of drawings]

FIG. 1 is a front view showing how the degaussing coil is installed in the device, FIG. 2 is a back view showing how the cathode ray tube is installed, and FIG. 3 is a sectional view of the Moom of FIG. 2. Fig. 4 is a cross-sectional view taken along line B-B in Fig. 2, Fig. 6 is a partially enlarged sectional view of Fig. 4, Fig. 6 is a front view of a conventional display device, and Fig. 7 is a conventional degaussing coil mounting device. Figure t$8 is a rear view showing the state in which the degaussing coil is attached, and Figure t$8 is a sectional view taken along the line CC in Figure 7. 1...Display device, 3...Cathode ray tube, 7
... Degaussing coil, 12 ... Regulation rib,
13...Cathode ray tube regulation rib, 14...
Gate.

Claims (1)

[Claims] In display devices using cathode ray tubes such as televisions and displays, a recess on the inner surface of a mask in a front cabinet is provided with a regulating rib and an injection molding gate for holding a degaussing coil, and the degaussing coil is placed between the inner surface of the mask and the cathode ray tube. Stored degaussing coil installation device.