JP2001008131A - Cathode-ray tube device and method for assembling it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a cathode-ray tube(CRT) device and its assembling method capable of connecting the electrical connection between an explosion-proof reinforced band and an earth coated surface to an earth potential part by simple constitution, improving the efficiency of earth fitting work and reducing the number of parts. SOLUTION: The CRT device is provided with a fixing tool 30 for electrically connecting the explosion-proof reinforced band 13 to the earth coated surface 14 arranged on a CRT and for holding assembling position relation between the CRT and a frame body 40, and a lead wire 31 for connecting its one end to the fixing tool 30 and connecting the other end to the earth potential part through a substrate 20. The band 13 and the coated surface 14 are connected to the earth potential part by arranging the fixing tool 30 between the CRT and the frame body 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cathode ray tube device and a method of assembling the cathode ray tube device. The present invention relates to a cathode ray tube device and a method for assembling the cathode ray tube device, which achieve efficiency.

[0002]

2. Description of the Related Art Conventionally, cathode ray tubes (CRTs) used in television receivers, monitors and the like include:
Various configurations are provided for suppressing the effects of magnetic and electric fields from inside and outside. A general configuration of a conventional cathode ray tube device will be described with reference to FIG. As shown in FIG. 5, a cathode ray tube 10 assembled to a frame body 40 constituting a front case includes a panel 11 having a face portion for displaying a predetermined image, a funnel 12 joined to the panel, and a panel 11. , An explosion-proof reinforcing band 13 attached to the outer peripheral portion of the cathode ray tube 10, an earth coating surface 14 applied to the funnel 12 by graphite coating or the like, and a cathode ray tube 10
And a lug 15 for assembling and fixing to the frame body 40. Further, the cathode ray tube 1 is provided at the end of the cathode ray tube 10.
An electrode 16 for applying a signal for displaying a predetermined image protrudes from an electron gun (not shown) housed in the inside,
A substrate 20 having a socket 21 electrically coupled to the electrode 16 is mounted.

Next, a grounding structure of the cathode ray tube device having such a configuration will be described with reference to FIG. In the cathode ray tube device shown in FIG. 5, in order to prevent a charging phenomenon caused by a high voltage such as an anode voltage applied to the cathode ray tube 10 via the electrode 16, the funnel 12 located on the back side of the cathode ray tube 10 An earth-coated surface 14 is formed. In addition, a conductive transparent processing film (not shown) is formed on the panel 11 for the purpose of preventing the face portion from being charged.

Then, in order to connect the ground coating surface 14 and the conductive transparent processing film to the ground potential, a cathode wire is connected via an explosion-proof reinforcing band 13 and a lug 15 electrically connected to the conductive transparent processing film. The ground coating surface 14 on the back side of the tube 10 is electrically connected to the conductive transparent processing film on the front side.
Is connected to a ground potential via a grounding lead wire 31 attached to the device. Specifically, both ends are hooked on the lug 15 and the spring 35
A lug 15 is formed by a flat braided copper wire 34 which is brought into close contact with and electrically contacts the ground coating surface 14 with an appropriate pressure due to the shrinkage force of the wire, and a ground lead wire 31 which connects the copper wire 34 to the substrate 20. To electrically connect the reinforcing band 13 for explosion-proof and the ground coating surface 14 with a copper wire 34.
And a ground potential via a lead wire 31.

[0005] As another example of a conventionally known earth structure, as shown in FIG.
And an earth metal fitting 36 electrically connected to the earth coating face 14. By connecting the earth metal fitting 36 to the substrate 20 via the lead wire 31, the ground coating face 14 on the back side of the cathode ray tube 10 is provided. There is a configuration in which the conductive transparent processing film on the front side is connected to the ground potential. The ground structure of the cathode ray tube device as shown in FIGS.
No. 3,456, JP-A-8-46984, and the like.

The procedure for assembling the cathode ray tube device shown in FIG. 5 is as follows. First, both ends of the copper wire 34 are hung on the lug 15 and the copper wire 34 is attached to the ground coating surface 14 using an adhesive member. Then, the copper wire 34 is tightly fixed to the ground coating surface 14 by utilizing the contraction force of a spring 35 having one end attached to the lug 15. Next, by connecting the connector 32 attached to the other end of the lead wire 31 connected to an appropriate portion of the copper wire 34 to the socket 21 provided on the board 20,
The ground coating surface 14 is configured to be connectable to a ground potential. Further, the cathode ray tube 10 is housed in the frame 40,
The assembling is completed by fixing the lug 15 inside the frame body 40 with fastening parts not shown.

[0007]

As described above, the grounding structure of the conventional cathode ray tube device has a structure in which the copper wire 34 is attached to the ground coating surface 14 by utilizing the contraction force of the spring. Therefore, the mounting must be performed by applying a tensile force opposing the contraction force of the spring, and the mounting operation itself is complicated, the work efficiency is low, and the number of parts increases.

Further, the earth structure shown in FIG. 6 has a structure in which the explosion-proof reinforcing band 13 and the earth coating surface 14 are electrically connected by the earth metal fitting 36, so that the earth structure is in close contact with the earth coating surface 14. Although it is not necessary to use a copper wire or spring for fixing, it is possible to suppress the above-mentioned deterioration of the working efficiency and a large increase in the number of parts, but the earth metal fitting 36 which is a dedicated part for earth must be attached by an adhesive member or the like. However, there is still a problem that the mounting operation is complicated and parts management is required.

In view of the above problems, the present invention can electrically connect the explosion-proof reinforcing band and the ground coating surface to a ground potential with a simple configuration, thereby improving the efficiency of the ground mounting work. It is an object of the present invention to provide a cathode ray tube device and a method for assembling the cathode ray tube device, which can reduce the number of parts and the number of parts.

[0010]

A cathode ray tube device according to the present invention is mounted on an outer peripheral portion of a panel by a fixture for maintaining a positional relationship between the cathode ray tube device and a frame to which the cathode ray tube device is assembled. The electrical connection between the explosion-proof reinforcing band and the ground coating surface provided on the funnel is provided, and the grounding surface is connected to a ground potential by a lead wire connected to the fixture. . Therefore, the cathode ray tube device according to the present invention, by interposing a fixture for maintaining the assembly positional relationship between the cathode ray tube device and the frame between the cathode ray tube device and the frame, at least the fixture The explosion-proof reinforcing band and the ground coating surface are electrically connected to each other through a conductive member formed on the surface that comes into contact with the cathode ray tube device or constituting the surface that comes into contact with the cathode ray tube device.

Further, the method for assembling a cathode ray tube device according to the present invention is characterized in that, after assembling the cathode ray tube device and the frame, a fixture for maintaining a positional relationship between the cathode ray tube device and the frame is attached. An explosion-proof reinforcing band and an earth-coated surface are electrically connected via a fixture. Therefore, the method of assembling the cathode ray tube device according to the present invention, at least by mounting a fixture for maintaining the assembly positional relationship between the cathode ray tube device and the frame, between the cathode ray tube device and the frame, at least. Formed on the surface of the fixture that contacts the cathode ray tube device, or
The explosion-proof reinforcing band and the ground coating surface are electrically connected via a conductive member constituting a contacting surface.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic configuration diagram showing one embodiment of a cathode ray tube device according to the present invention. Here, the same components as those in the related art (see FIGS. 5 and 6) are denoted by the same reference numerals. FIG. 1 (a),
As shown in (b), the cathode ray tube device according to the present embodiment includes a panel 11, a funnel 12, and an explosion-proof reinforcing band 1.
3, a cathode ray tube 10 having a ground coating surface 14, a lug 15, a substrate 20 having a socket 21, a fixture 30, a lead wire 31 having a connector 32 attached to the other end, and a frame 40. You.

A panel 11 having a face portion for displaying an image is formed with a conductive transparent processing film (not shown) in order to prevent charging of the face portion. In order to prevent charging caused by a high voltage applied to the cathode ray tube 10, a ground coating surface 14 formed by graphite coating or the like is formed. In addition, the conductive transparent processing film,
It is electrically connected to the explosion-proof reinforcing band 13 and the lug 15,
While being electrically connected to the ground coating surface 14 by a conductive member applied to a fixture 30 described later,
It is connected to the ground potential via a lead wire 31.

The end of the cathode ray tube 10 is
1 is connected to the substrate 20 on which the connector 1 is provided, and a connector 32 is attached to the other end of the electrode or lead 31 not shown.
, An image display signal is applied and a connection to a ground potential is made. Then, the cathode ray tube 10 and the frame body 40 are assembled and fixed by using a fastening part or the like via a lug 15 provided near a joint between the panel 11 of the cathode ray tube 10 and the funnel 12. Here, the assembling positional relationship between the cathode ray tube 10 and the frame body 40 is held and fixed by interposing the fixture 30 between the cathode ray tube 10 and the frame body 40.

The fixture 30 has a conductive member formed at least on the surface that comes into contact with the cathode ray tube 10 or constitutes the surface that comes into contact with the fixture 30. The ground coating surface 14 is electrically connected. Then, one end of the ground lead wire 31 is connected to the fixture 30, and the other end is connected to the
Of the fixture 30 is connected to the ground potential. In addition, the fixture 30
Will be described later.

According to the cathode ray device having such a configuration, the fixture 30 used for maintaining the assembling positional relationship between the cathode ray tube 10 and the frame 40 is provided between the cathode ray tube 10 and the frame 40. With a simple configuration just interposed in
The explosion-proof reinforcing band 13 and the ground coating surface 14 are electrically connected to each other on the surface where the fixture 30 abuts on the cathode ray tube 10, and both are grounded via the lead wire 31 connected to the fixture 30. Connected to potential. Therefore, as shown in the prior art (see FIGS. 5 and 6),
Without the need for copper wires, springs, and grounding hardware,
It is possible to realize a simple grounding structure that can be reliably connected to the ground potential while reducing the number of parts as compared with the related art.

Next, a method of assembling the above-described cathode ray tube device will be described with reference to FIG. In addition, about the structure equivalent to the above-mentioned schematic structure (refer FIG. 1), the same code | symbol is attached | subjected and demonstrated. First, as shown in FIG. 2A, the cathode ray tube 10 is housed in a predetermined position inside the frame body 40. At this time, the panel 11 of the cathode ray tube 10 and the funnel 1
The lug 15 protruding near the joint of No. 2 corresponds to the mounting position inside the frame body 40. Next, as shown in FIG. 2B, the fixture 30 is mounted between the cathode ray tube 10 and the frame 40, and the assembled position of the cathode ray tube 10 and the frame 40 is determined. Here, as shown in FIG. 1B, the fixture 30 is interposed at a predetermined position between the cathode ray tube 10 and the frame body 40, and the outer curved surface of the cathode ray tube 10 and the inner surface of the frame body 40. Attach so that both sides are in close contact.

Then, the cathode ray tube 10 is fixed by the fixture 30.
After determining the state of the assembling position of the cathode ray tube 10 and the frame body 40, the cathode ray tube 10 is fixed to the frame body 40 by fastening the lug 15 to the mounting position inside the frame body 40 using a fastening part or the like not shown. And fix it. Further, FIG.
As shown in (c), the other end of the lead wire 31 whose one end is connected to the fixture 30 is connected to the substrate 20 via the connector 32.
And the fixture 30 can be connected to the ground potential. At this time, the cathode ray tube 10
The electrode 16 provided at the end of the connector 21 is individually coupled to the socket 21 together with the connector 32 at the other end of the lead wire 31.

According to the method of assembling the cathode ray device having such a procedure, the cathode ray tube 10 and the frame 40 are maintained for the purpose of maintaining the assembly positional relationship between the cathode ray tube 10 and the frame 40.
In the step (FIG. 2 (b)) of mounting the fixing tool 30 in between, in addition to determining and holding the above-mentioned positional relationship, a conductive member provided on the surface where the fixing tool 30 contacts the cathode ray tube 10 is used. Explosion-proof reinforcement band 13 and ground coating surface 14
Are electrically connected.

Therefore, the prior art (see FIGS. 5 and 6)
As shown in the figure, since a complicated operation for attaching a copper wire, a spring, and a grounding member to the cathode ray tube is not required, the number of operation steps can be reduced as compared with the related art, and the cathode ray tube 10 and the frame 40 can be reduced. The electric connection between the explosion-proof reinforcing band 13 and the earth coating surface 14 is surely secured by a simple operation of attaching the fixing member 30 between the fixing member 30 and the ground potential through the fixing member 30. Since the connection can be made, the conductive transparent processing film formed on the panel 11 and the ground coating surface 14 are satisfactorily connected to the ground potential to suppress adverse effects on the cathode ray tube due to charging (display defects, etc.). Can be.

[0021]

Next, an embodiment of a fixture applied to the above-described cathode ray tube device will be described with reference to FIG. FIG.
(A) is a schematic block diagram which shows the 1st Example of a fixture. As shown in FIG. 3A, the fixture 3 according to the present embodiment
0a has a configuration in which the linear conductive member 33a is embedded in the base of the fixture 30a, and the conductive member 33a is exposed at least on the surface (concave curved surface in the drawing) in contact with the cathode ray tube 10. are doing. Also, a lead wire 31 electrically connected to the conductive member 33a extends from one end (the lower part in the figure) of the fixture 30a, and a connector (not shown; FIGS. 1 and 2) attached to the other end. ) To a socket provided on the substrate.

FIG. 3B is a schematic configuration diagram showing a second embodiment of the fixture. As shown in FIG. 3B, the fixing device 30b according to the present embodiment has a configuration in which the strip-shaped conductive member 33b is formed on at least a surface (a concave curved surface in the drawing) in contact with the cathode ray tube 10. I have. Also, a lead wire 31 electrically connected to the conductive member 33b extends from one end (the lower part in the figure) of the fixture 30b, and a connector (not shown; FIGS. 1 and 2) attached to the other end. ) To a socket provided on the substrate.

By applying the fixtures 30a and 30b having the constructions shown in the first and second embodiments to the cathode ray tube apparatus according to the present invention, the fixtures 30a and 30b are connected to the cathode ray tube and the frame. With a simple configuration interposed therebetween, a predetermined assembly positional relationship can be maintained, and the explosion-proof reinforcing band and the ground coating surface are electrically connected via the conductive members 33a and 33b. , Is connected to the ground potential via a lead wire 31.

The embedding shape and pattern shape of the conductive members 33a and 33b are not limited to those shown in FIGS. 3 (a) and 3 (b). That is, the fixture 3
Any material may be used as long as the conductive member directly contacts the explosion-proof reinforcing band and the ground coating surface provided on the cathode ray tube in contact with 0a and 30b, so that both potentials can be shared. The bases of the fixtures 33a and 33b may be made of an elastic material. With such material characteristics, it is possible to determine and hold an assembling positional relationship between the cathode ray tube and the frame, Since both the cathode ray tube and the frame can be brought into close contact with an appropriate elastic repulsion, the reinforcing band for explosion-proof and the earth coating surface can be electrically connected in a proper contact state.

FIG. 3C is a schematic configuration diagram showing a third embodiment of the fixture. As shown in FIG. 3C, in the fixture 30c according to the present embodiment, the base itself of the fixture 30c is made of a conductive material, and the entire area of the surface (concave curved surface in FIG. 3) that comes into contact with the cathode ray tube 10 is shown. Over the conductive member. A lead 31 electrically connected to the fixture 30c extends at one end (the lower side in the figure) of the fixture 30b, and a connector (not shown; see FIGS. 1 and 2) attached to the other end. ) Is connected to a socket provided on the substrate.

The fixture 30c having such a structure is
By applying the present invention to the cathode ray tube device according to the present invention, it is possible to maintain a predetermined assembling positional relationship with a simple configuration in which the fixture 30c is interposed between the cathode ray tube and the frame, and to use a conductive material. The grounding surface and the reinforcing band for explosion-proof are electrically connected via the fixing portion 30c constituted by the above, and further connected to the ground potential via the lead wire 31. The fixing member 33c may be one in which the entire substrate is made of a conductive material, or one in which only the surface (concave curved surface in the drawing) that contacts the cathode ray tube 10 is made of a conductive material. It may be. In short, other forms may be used as long as they have a configuration capable of electrically connecting the explosion-proof reinforcing band and the ground coating surface.

The fixing member 33c may be made of an elastic material having conductivity. Due to such material characteristics, the positional relationship between the cathode ray tube and the frame can be determined and maintained, and the cathode ray tube and the frame can be brought into close contact with both the cathode ray tube and the frame with an appropriate elastic repulsion. The reinforcing band and the ground coating surface can be electrically connected in an appropriate contact state.

Next, the mounting position of the above-mentioned fixture will be described with reference to FIG. As shown in FIG. 4, the mounting position of the fixture applied to the cathode ray tube apparatus according to the present invention is set at an arbitrary position where the positional relationship between the cathode ray tube 10 and the frame body 40 can be determined and held. Is done. That is, by mounting the fixture 30D below the cathode ray tube 10, the downward assembling positional relationship of the cathode ray tube 10 is determined, and by interposing the fixtures 30L and 30R in both the left and right directions, the right and left of the cathode ray tube 10 are left and right. The assembling positional relationship in the direction is determined.

Then, such fixtures 30D, 30
The mounting positions of L and 30R are arbitrarily set as long as they are in contact with both the explosion-proof reinforcing band and the ground coating surface. Therefore, the fixtures 30D, 30L, and 30R are optimally located to determine the positional relationship between the cathode ray tube 10 and the frame 40, and are in good contact with both the explosion-proof reinforcing band and the ground coating surface. It can be mounted and interposed, and the assembling balance and grounding structure of the cathode ray tube device can be optimized.

[0030]

According to the first aspect of the present invention, the fixture for maintaining the positional relationship between the cathode ray tube device and the frame is interposed between the cathode ray tube device and the frame. The explosion-proof reinforcing band and the ground coating surface can be electrically connected to each other via the conductive member provided on the fixing device, and the fixing device is connected to the ground potential via a grounding lead wire. Therefore, the transparent processing film formed on the panel and the ground coating surface formed on the funnel can be grounded without using a copper wire, a spring, or a grounding metal. Therefore, with a simple configuration in which a fixture provided with a conductive member is interposed between the cathode ray tube device and the frame, the assembly positional relationship between the cathode ray tube device and the frame can be maintained. In addition, adverse effects on the cathode ray tube device due to charging can be suppressed. Further, since the number of parts for the ground structure can be reduced, parts management and the like can be reduced.

According to the second or third aspect of the present invention, since the conductive member is provided on at least the surface of the fixture that comes into contact with the cathode ray tube device, a space between the cathode ray tube device and the frame body is provided. With the simple structure interposed with the fixing device, the positional relationship between the cathode ray tube device and the frame can be maintained, and the explosion-proof reinforcing band and the earth coating surface can be reliably connected to the earth potential. It is possible to suppress adverse effects on the cathode ray tube device due to charging. According to the fourth aspect of the present invention, the fixture can be interposed at an arbitrary position where the positional relationship between the cathode ray tube device and the frame body can be maintained.
It is possible to realize an earth structure that can make good electrical contact between the explosion-proof reinforcing band and the earth coating surface while optimizing the positional relationship between the cathode ray tube and the frame.

According to the fifth aspect of the present invention, a fixture for maintaining a positional relationship between the cathode ray tube device and the frame is mounted between the cathode ray tube device and the frame. The explosion-proof reinforcing band and the ground coating surface can be electrically connected to each other via the conductive member provided on the fixing device, and the fixing device is connected to the ground potential via a grounding lead wire. Therefore, the explosion-proof reinforcing band and the ground coating surface can be reliably grounded without the need for complicated work of attaching copper wires, springs, and grounding hardware. Therefore, by a simple work of mounting a fixing member provided with a conductive member between the cathode ray tube device and the frame, it is possible to maintain the assembly positional relationship between the cathode ray tube device and the frame, It is possible to realize a grounding structure capable of reliably grounding the transparent processing film formed on the panel and the ground coating surface formed on the funnel.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing one embodiment of a cathode ray tube device according to the present invention.

FIG. 2 is a view showing a method of assembling the cathode ray tube device according to the embodiment.

FIG. 3 is a schematic view showing an example of a fixture applied to the cathode ray tube device according to the embodiment.

FIG. 4 is a schematic view showing a mounting position of a fixture applied to the cathode ray tube device according to the embodiment.

FIG. 5 is a schematic diagram showing a general configuration of a conventional cathode ray tube device.

FIG. 6 is a schematic view showing another example of a conventionally known ground structure.

[Explanation of symbols]

Reference numeral 10: cathode ray tube, 11: panel, 12: funnel, 13: explosion-proof reinforcing band, 14: ground coating surface, 15: lug, 16: electrode, 20: substrate, 21: socket .., 30... Fixture, 31... Lead wire, 32... Connector, 33 a, 33 b.

Claims (5)

[Claims] 1. A panel having a face portion for displaying a predetermined image, a funnel joined to the panel,
An explosion-proof reinforcing band attached to the outer periphery of the panel,
A cathode ray tube device having an earth coating surface provided on the funnel, wherein the explosion-proof reinforcing band and the earth coating surface are electrically connected, and the cathode ray tube device and the cathode ray tube device are assembled. A fixture for maintaining an assembling positional relationship with the frame; a lead wire having one end connected to the fixture and a connector attached to the other end; an electrode provided at an end of the funnel; and the lead For each of the connectors attached to the other end of the wire,
A cathode ray tube device comprising: a substrate having a socket for electrically coupling. 2. The cathode ray tube device according to claim 1, wherein a conductive member is provided on a surface of the fixture that contacts the cathode ray tube device. 3. The cathode ray tube device according to claim 1, wherein at least a surface of the fixture that contacts the cathode ray tube device is formed of a conductive member. 4. The cathode ray tube device according to claim 2, wherein said fixing member is attached to an arbitrary position for maintaining an assembling positional relationship between said cathode ray tube device and said frame. 5. A panel having a face for displaying a predetermined image, a funnel joined to the panel,
An explosion-proof reinforcing band attached to the outer periphery of the panel,
In a method of assembling a cathode ray tube device having an earth coating surface provided on the funnel, a step of assembling the cathode ray tube device and a predetermined frame, and assembling a positional relationship between the cathode ray tube device and the frame. A step of electrically connecting the explosion-proof reinforcing band and the earth coating surface via the fixture by attaching a fixture to be held; and connecting a lead wire having one end connected to the fixture to a ground potential. Connecting the explosion-proof reinforcing band and the ground coating surface to the ground potential.