JPH09312815A - Cathode ray tube device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a manufacture cost by decreasing the number of components. SOLUTION: A fitting member 15 has a cylindrical main body 15A with nearly the same width (r) as a width of a flat outer peripheral face 1a externaly- fitted to a flat outer peripheral face 1a of a head 1A of a cathode ray tube 1 and a cylindrical extension 15B extended toward a neck 1B of the cathode ray tube 1 is integrally connected to a rear end of the cylindrical main body 15A separably. The cylindrical main body 15A is composed of a metallic material and the cylindrical extension 15B is composed of a synthetic resin material. Then the head 1A of the cathode ray tube 1 is inserted to an opening 6a of a decoration board 6, a rear cabinet 12 is abutted on a rear end of the cylindrical extension 15B and a flange section 12a of the rear cabinet 12 and a flange section 18 provide on a rear end of the cylindrical extension 15B are fitted to a rear side of the decoration board 6 via fitting frame 7.

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 provided on a decorative plate of a pachinko machine, for example.

[0002]

2. Description of the Related Art Conventionally, a cathode ray tube device of this type is disclosed in Japanese Patent Application Laid-Open No. 7-111140. This is the head 1A and the neck 1 as shown in FIGS.
A cathode ray tube 1 having B, a deflection yoke 2 externally fitted to the neck portion 1B, a DY spacer 3 provided on the deflection yoke 2, and an anode cap provided on the back surface of the head portion 1A. 4 and a metal tubular mounting member 5 is fitted to the head portion 1A of the cathode ray tube 1 by shrink fitting or the like, and the width H of the mounting member 5 is set to the head portion 1A.
By extending the rear end of the mounting member 5 to the neck 1B of the cathode ray tube 1 by making the width h significantly larger than the width h of the flat outer peripheral surface 1a of A, the flange portion 5a protruding at the rear end of the attachment member 5 has a center of gravity of the cathode ray tube 1 The position is almost the same,
As a result, the head 1A is inserted into the opening 6a formed in the decorative plate (plate) 6 of the pachinko machine, for example, and
When the flange portion 5a is fixed to the back surface of the decorative plate 6 via the mounting frame 7, the cathode-ray tube 1 can be attached to the decorative plate 6 in a well-balanced manner, and from the decorative plate 6 to the rear end of the neck portion 1B. By shortening the interval L, the occupied area behind the decorative plate 6 can be made as small as possible.

Further, the upper portion of the rear end of the mounting member 5 is cut out to form a DY spacer mounting opening 8 for facilitating the mounting of the DY spacer 3 and dustproof covering the DY spacer mounting opening 8. A cover 9 is provided, and an anode cap opening 10 for preventing a discharge from being generated between the anode cap 4 and the mounting member 5 is formed in a side surface of the mounting member 5 facing the anode cap 4. In addition, an anode cover 11 for preventing electric shock and dust that covers the opening 10 for the anode cap is provided.
Reference numeral 12 is a rear cabinet attached to the rear end of the attachment member 3 and covering the neck portion 1B of the cathode ray tube 1, 13
Is a decorative frame.

[0004]

SUMMARY OF THE INVENTION In the above conventional configuration,
Since the metal mounting member 5 having the wide width H is used and the rear end of the mounting member 5 is extended to the neck portion 1B of the cathode ray tube 1, the cathode ray tube 1 can be attached to the decoration plate 6 in a well-balanced manner and the decoration plate 6 There is an advantage in that the space L from the neck to the rear end of the neck portion 1B can be shortened to make the rear surface of the decorative plate 6 as small as possible, but the mounting member 5 has the mounting port 8 for the DY spacer and the anode. Since the cap opening 10 is formed, it is necessary to use the dustproof cover 9 and the anode cover 11 that cover the both openings 8 and 10, which increases the number of parts,
Production costs are high.

An object of the present invention is to provide a cathode ray tube device having the above-mentioned conventional advantages and eliminating the drawbacks thereof. Further, the present invention is intended to simplify the attachment of the cathode ray tube to the decorative plate and ensure the fixation after the attachment.

[0006]

In order to achieve the above-mentioned object, the invention according to claim 1 inserts the head of a cathode ray tube into an opening formed in a plate body, and at the same time, after a mounting member attached to the cathode ray tube. In the CRT device in which the cathode ray tube is attached to the plate body by fixing the end to the plate body, and the rear cabinet that covers the neck portion of the CRT tube is attached to the attachment member, the attachment member is the head of the CRT tube. Has a cylindrical main body having a width substantially the same as the width of the flat outer peripheral surface fitted on the flat outer peripheral surface of the tube, and a cylindrical extending portion extending toward the neck portion side of the cathode ray tube at the rear end of the cylindrical main body. It is characterized in that they are separably integrally connected, and that the tubular main body is made of a metal material, and the tubular extension portion is made of a synthetic resin material.

In the above construction, when assembling a cathode ray tube, after fitting the tubular body out of the tubular body and the tubular extended portion constituting the mounting member to the head of the cathode ray tube by shrink fitting or the like. The deflection yoke, the DY spacer, the anode cap, and the like may be attached to the cathode ray tube, and then the tubular extension portion may be integrally connected to the tubular body.

In this case, the width of the tubular body attached to the head of the cathode ray tube is set to be substantially the same as the width of the flat outer peripheral surface of the head, and the tubular body does not project to the neck side. Therefore, the DY spacer or the like can be easily attached to the CRT with the tubular extension portion removed from the tubular body.

Further, since the extended portion integrally connected to the tubular body is tubular and extends to the neck portion of the cathode ray tube, and the extended portion also serves as a dustproof cover, the conventional dustproof for the DY spacer is used. No cover is required, the number of parts is small, and the manufacturing cost can be reduced.

Further, since the cylindrical extending portion is made of a synthetic resin material, there is no risk of electric discharge occurring between the extending portion and the anode cap.

When the CRT is attached to a decorative plate (plate) of a pachinko machine, for example, the head of the CRT is inserted into the opening of the decorative plate and the rear end of the cylindrical extension is fixed to the decorative plate. do it.

In this case, since the width of the mounting member composed of the tubular body and the tubular extension is sufficiently wide, the rear end of the tubular extension is substantially aligned with the position of the center of gravity of the cathode ray tube. The decorative plate can be attached to the decorative plate in a well-balanced manner, and the space between the decorative plate and the rear end of the neck portion can be shortened to reduce the occupied area behind the decorative plate.

According to a second aspect of the present invention, an opening for an anode cap is formed by cutting out a portion of the cathode ray tube of the cylindrical body facing the anode cap, and the anode cover covering the opening for the anode cap is formed. It is characterized in that it is integrally formed with the cylindrical extension portion.

According to the above construction, since the anode cap opening is formed in the metallic cylindrical body, there is no risk of electric discharge occurring between the cylindrical body and the anode cap, and the anode cap is also formed. Since the anode cover covering the opening for use is integrally formed with the cylindrical extending portion, the number of parts does not increase and the manufacturing cost is low.

The invention according to claim 3 is characterized in that the rear cabinet is formed of a synthetic resin material.

According to a fourth aspect of the present invention, at least the rear surface portion of the rear cabinet is covered with a magnetic plate material such as iron.

According to the above construction, the rear cabinet is made of a synthetic resin material, which is light and inexpensive, and the reproduced image on the cathode ray tube is not disturbed by radio waves from other electronic devices.

According to a fifth aspect of the present invention, the rear cabinet is connected to the mounting member by abutting a flange portion provided at a front end of the rear cabinet with a flange portion formed at a rear end of the tubular extending portion. The two abutting flange portions are locked to a lock lever provided on the plate body, and the entire apparatus including the cathode ray tube is detachably fixed to the plate body.

According to the above-mentioned structure, it is possible to simplify the attachment of the cathode ray tube device to the decorative plate (plate body) and to secure the fixing after the attachment.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show a cathode ray tube device according to an embodiment of the present invention. For example, an attachment member 15 for attaching the cathode ray tube 1 to a decorative plate 6 of a pachinko machine is attached to a head 1A of the cathode ray tube 1. A cylindrical main body 15A attached via an explosion-proof band 16 and a cylindrical extension portion 15 integrally connected to the rear end of the cylindrical main body 15A.
B. 6 to 8 with a configuration other than the above.
The same parts as those of the conventional example shown in FIG.

The tubular main body 15A is formed by bending a strip plate made of a metal material such as an iron plate into a substantially square shape and joining both ends thereof to form an annular shape. The head 1A is fitted on the head 1A by shrink fitting or the like to prevent the head 1A from exploding.

The width r of the cylindrical main body 15A is set to be substantially the same as the width of the flat outer peripheral surface 1a of the head 1A, and the cylindrical main body 15A does not project to the neck 1B side.
With the tubular extension 15B removed from the tubular body 15A, the DY spacers 3 and the like can be easily attached to the cathode ray tube 1.

The cylindrical extending portion 15B is made of a synthetic resin material and has an annular portion 17 having the same diameter as the cylindrical main body 15A, and a flange portion 18 projecting integrally from the rear end of the annular portion 17. Then
A plurality of protrusions 19 integrally formed on the outer peripheral surface of the annular portion 17 at predetermined intervals in the circumferential direction are protruded forward from the tip of the annular portion 17. By contacting the outer peripheral surface of the tubular body 15A, the tubular extension 15B can be positioned concentrically at the rear end of the tubular body 15A.

Further, the stand portions 20 are integrally formed at the four corners of the outer peripheral surface of the annular portion 17, and each of the stand portions 2
The tongue piece 2 at the rear end of both side surfaces of the cylindrical main body 15A so as to face 0.
1 is projectingly provided, and the screw 22 is screwed into the screw hole 20a of each stand portion 20 through the through hole of each tongue piece 21 to form a cylindrical extension portion 15B at the rear end of the cylindrical main body 15A.
Can be integrally connected.

According to the above construction, the extending portion 15B is tubular and extends to the neck portion 1B of the cathode ray tube 1, and the extending portion 15B also serves as the dustproof cover. Therefore, the conventional DY spacer dustproof cover 9 is used. (See FIG. 8) is unnecessary, the number of parts is small, and the manufacturing cost can be reduced.

Further, since the cylindrical extending portion 15B is formed of a synthetic resin material, there is no possibility that electric discharge will occur between the cylindrical extending portion 15B and the anode cap 4, and furthermore, FIG. As shown in FIG. 5, since the portion of the tubular body 15A facing the anode cap 4 is cut away to form the anode cap opening 24, the tubular body 15 is formed.
There is no risk of electric discharge occurring between A and the anode cap 4, and since the anode cover 25 covering the anode cap opening 24 is formed integrally with the cylindrical extension 15B, the number of parts is increased. Without it, the production cost is cheap.

As shown in FIGS. 3 and 4, a pair of positioning pins 27 and a lock piece 28 are provided on the flange portion 12a formed in the opening of the rear cabinet 12 so as to project, and the cylindrical extension portion 15B is provided. Positioning hole 2 in flange 18
9 and the lock hole 30 are provided so that the pair of positioning pins 27 are fitted into the positioning hole 29, and the lock piece 28 is engaged with the lock hole 30 so that the flange portions 18 and 12a come into contact with each other. Let the cylindrical extension 15
The rear cabinet 12 can be locked at the rear end of B. The rear cabinet 12 is made of a synthetic resin material like the extension 15B.

As shown in FIG. 3, the mounting frame 7 includes a decorative plate 6
An approximately square-shaped plate body 7a fixed to the back surface of the plate, and a pair of upper and lower positioning pieces 7b protruding from both upper and lower sides of the plate body 7a,
7b and substantially L provided on both sides of each positioning piece 7b, 7b
A pair of left and right substantially L-shaped support pieces 7d, 7 having letter-shaped spacing holding pieces 7c, 7c and projecting from both left and right sides of the plate body 7a
A lock lever 33 is rotatably supported by d via a pivot shaft 32.

In the above structure, the head portion 1 of the cathode ray tube 1
By inserting A into the opening 6a of the decorative plate 6, as shown in FIG.
As shown in FIG. 2, the attachment member 15 attached to the cathode ray tube 1 is inserted between the upper and lower positioning pieces 7b, 7b of the attachment frame 7, and the flange portion 18 of the tubular extension portion 15B is provided.
Is brought into contact with the space holding piece 7c and the supporting piece 7d, whereby the cathode ray tube 1 is positioned in the opening 6a of the decorative plate 6. Then, the flange portion 1 of the cylindrical extension portion 15B.
In the state where the flange portion 12a of the rear cabinet 12 is in contact with 8, the lock lever 33 located on the outer side is rotated inward as shown by a phantom line in FIG.
As shown by the solid line in FIG. 2, the lock lever 33 and the support piece 7
The flange portions 18 and 12a are sandwiched by d and
The cathode ray tube 1 and the rear cabinet 12 can be fixed to the decorative plate 6.

According to the above configuration, the width R of the mounting member 15 including the tubular main body 15A and the tubular extension 15B is sufficiently wide, so that the flange portion 1 provided at the rear end of the tubular extension 15B.
8 and the center of gravity of the cathode ray tube 1 are substantially aligned with each other, so that the cathode ray tube 1 can be attached to the decoration plate 6 in a well-balanced manner, and the distance L from the decoration plate 6 to the rear end of the neck portion 1B is shortened. It is possible to reduce the occupied area behind.

In the above embodiment, the CRT device provided on the decorative plate 6 of the pachinko machine is described as an example, but other than this, the present invention can be applied to CRT devices attached to various plate bodies.

The rear cabinet 12 is made of a synthetic resin material as described above.
If the cover 100 in which an iron plate is bent into a substantially L-shape is provided as shown in FIG. 11, even if the CRT device is mounted back to back on a pachinko machine or the like, interference waves from other CRT devices can be prevented. Can be shielded, and image disturbance can be eliminated. Reference numeral 101 denotes a hooking bent portion at the tip of the cover, which is inserted into a slit formed in the rear cabinet 12. 102 is a fixing screw at the lower end of the cover.

[0033]

According to the invention described in claim 1, the width of the cylindrical body attached to the head of the cathode ray tube is set to be substantially the same as the width of the flat outer peripheral surface of the head, Since the main body does not project to the neck portion side, it is possible to easily attach the DY spacer or the like to the CRT with the tubular extension portion removed.

Further, since the extended portion integrally connected to the tubular body is tubular and extends to the neck portion of the cathode ray tube, and the extended portion also serves as the dustproof cover, the dustproofing for the conventional DY spacer is performed. No cover is required, the number of parts is small, and the manufacturing cost can be reduced.

Furthermore, since the tubular extension portion is formed of a synthetic resin material, there is no risk of electric discharge occurring between the extension portion and the anode cap.

Furthermore, since the width of the mounting member composed of the tubular body and the tubular extension is sufficiently wide, the head of the cathode ray tube is inserted into the opening of the plate body and the rear portion of the tubular extension is inserted. When the end is fixed to the plate body, the rear end of the cylindrical extending portion can be substantially aligned with the center of gravity of the cathode ray tube to attach the cathode ray tube to the plate body in a well-balanced manner, and the neck portion from the plate body can be attached. The space to the rear end of the plate body can be shortened to reduce the occupied area behind the plate body.

According to the second aspect of the present invention, since the anode cap opening is formed in the metallic cylindrical body,
There is no risk of electric discharge occurring between the tubular body and the anode cap, and since the anode cover that covers the opening for the anode cap is formed integrally with the tubular extension portion, the number of parts is increased. No, the production cost is low.

According to the third aspect of the present invention, the CRT device is light in weight, and the work of mounting and dismounting is facilitated.

According to the fourth aspect of the present invention, the CRT device can be made light and inexpensive, and in addition, many CRT devices are provided close to each other back to back without being affected by the interfering radio waves from other electronic devices. When applied to a pachinko machine, it is suitable because it is unlikely to cause image distortion.

According to the fifth aspect of the present invention, it is possible to simplify the mounting of the cathode ray tube device on the decorative plate (plate) and to secure the fixing after the mounting.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a cathode ray tube device according to an embodiment of the present invention.

FIG. 2 is a cutaway plan view of the same portion.

FIG. 3 is an exploded perspective view of the same.

FIG. 4 is a longitudinal sectional view of the same.

FIG. 5 is a horizontal sectional view of the same.

FIG. 6 is a partially cutaway side view showing a conventional example.

FIG. 7 is a cutaway plan view of the same portion.

FIG. 8 is an exploded perspective view of the same.

FIG. 9 is a vertical sectional view of a CRT device showing another embodiment.

[Explanation of symbols]

 1 Braun tube 1A Braun tube head 1B Braun tube neck 1a Flat outer peripheral surface 4 Anode cap 6 Decorative plate (plate) 6a Opening 12 Rear cabinet 12a Flange 15 Mounting member 15A Cylindrical body 15B Cylindrical extension 18 Flange part of the tubular extension 24 Anode cap opening 25 Anode cover 33 Lock lever 100 Cover iron plate r Width of tubular body

Claims (5)

[Claims] 1. The cathode ray tube is attached to the plate body by inserting the head of the cathode ray tube into an opening formed in the plate body and fixing the rear end of a mounting member attached to the cathode ray tube to the plate body. In a cathode ray tube device in which a rear cabinet covering a neck portion of a cathode ray tube is attached to the attachment member, the attachment member has a width substantially equal to a width of the flat outer peripheral surface fitted on the flat outer peripheral surface of the head of the cathode ray tube. A tubular main body having the same width is provided, and a tubular extension portion extending toward the neck portion side of the cathode ray tube is separably integrally connected to a rear end of the tubular main body, and the tubular main body is made of a metal material. A cathode ray tube device, wherein the tube-shaped extending portion is formed of a synthetic resin material while being formed. 2. An opening for an anode cap is formed by cutting out a portion of the cathode ray tube of the tubular body facing the anode cap, and an anode cover covering the opening for the anode cap is provided on the tubular extension portion. The cathode ray tube device according to claim 1, wherein the cathode ray tube device is integrally formed. 3. The cathode ray tube device according to claim 1, wherein the rear cabinet is made of a synthetic resin material. 4. The cathode ray tube device according to claim 3, wherein at least a rear surface portion of the rear cabinet is covered with a magnetic plate material such as iron. 5. The rear cabinet is connected to a mounting member by abutting a flange portion provided at a front end of the rear cabinet with a flange portion formed at a rear end of the tubular extension portion, and the rear cabinet is brought into contact with the rear cabinet. A structure for attaching a cathode ray tube device to a plate body, in which two flange portions are locked to a lock lever provided on the plate body, and the entire device including the cathode ray tube is detachably fixed to the plate body.