JP4337202B2 - CRT protection device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a frame structure for protecting the outer periphery of a CRT (cathode ray tube).
[0002]
[Prior art]
In video equipment such as a television receiver and a display monitor, as a means for protecting the CRT constituting the video equipment from external force, a configuration in which the CRT is housed and attached in a front cabinet is generally used.
[0003]
Japanese Patent Laid-Open No. 11-266416 proposes a configuration in which the CRT is made independent by using four divided frames corresponding to the four sides forming the outer periphery of the CRT.
[0004]
[Problems to be solved by the invention]
In the configuration in which the CRT is stored in the front cabinet, it is necessary to design and produce a new front cabinet each time the appearance design changes. This has been a problem in terms of production cost and production period of molding dies and the like.
In addition, with the increase in size of television receivers, logistics problems such as transportation and storage have become issues.
[0005]
Furthermore, in Japanese Patent Publication No. 11-2666416, the cross-sectional shapes of the four frames corresponding to the four sides of the CRT are not the same. Therefore, in this case as well, every time the design changes, it is necessary to create a new frame. Also, the positioning structure of the CRT is complicated.
The present invention solves the above-mentioned problems, and provides a CRT protection device that can protect the periphery of a CRT of any size using a common member regardless of the screen size of the CRT. In addition, when recycling the CRT protection device, it is easy to disassemble and improve the recycling rate.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention comprises four frames that are respectively fitted around four sides of a CRT and four corner connecting members that integrally connect the four frames at the four corners of the CRT. It was.
The cross-sectional shapes of the four frames are the same over the entire length in the longitudinal direction, and are made of a magnesium alloy, an aluminum alloy, a zinc alloy, or the like.
Furthermore, the cross-sectional shape of the frame was one of a substantially U shape, a substantially rectangular shape, a substantially L shape, and the like, and was produced by a method such as extrusion molding.
Furthermore, it was set as the structure which fastens the metal fitting attached to the four corners of CRT to the said corner connection member.
Further, a demagnetizing coil is disposed inside each of the four side frames.
In addition, a frame-shaped protection device is constituted by four frames and four corner connecting members, and a front escutcheon is attached to the screen surface side of the CRT to improve the appearance design.
With the above-described configuration, the protection device of the present invention uses a common member with a simple shape regardless of the screen size of the CRT, and can support surroundings of an arbitrary size CRT.
In addition, by using a common member, cost reduction and protection device manufacturing period can be shortened.
Furthermore, when the CRT protection device is recycled, it is easy to disassemble and improve the recycling rate.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The first aspect of the present invention comprises four frames that are respectively fitted to four sides of a CRT and four corner connecting members that integrally connect the four frames at four corners of the CRT. The member is provided with projections in two different directions, and a CRT protective device is characterized in that each frame end fitted to the long side and the short side of the CRT is fitted to the projection. Using a common member with a simple shape, it is possible to protect the periphery of a CRT of any size.
In addition, by using a common member, cost reduction and protection device manufacturing period can be shortened. Furthermore, when the CRT protection device is recycled, it is easy to disassemble and improve the recycling rate.
[0008]
The second invention is composed of four frames that are respectively fitted to four sides of the CRT and four corner connecting members that integrally connect the four frames at the four corners of the CRT, and the corner connecting members are different. A CRT protective device comprising a recess in two directions, and each frame end fitted to the long side and the short side of the CRT is fitted to the recess. The periphery of the CRT can be protected, and the cost can be reduced and the protective device manufacturing period can be shortened. In addition, it is easy to disassemble and improve the recycling rate.
[0009]
According to a third aspect of the present invention, there is provided the CRT protection device according to any one of the first to second aspects, wherein the metal fittings attached to the four corners of the CRT are screwed to the corner connecting member. Thus, a highly rigid frame-like protective device can be configured.
[0010]
According to a fourth aspect of the present invention, in the CRT according to any one of the first to third aspects, the cross-sectional shapes of the four frames that are respectively fitted to the four sides of the CRT are the same over the entire length in the longitudinal direction. Since the protective device is used, the protective device constituent members can be shared, and the cost can be reduced and the protective device manufacturing period can be shortened. In addition, it is easy to disassemble and improve the recycling rate.
[0011]
According to a fifth aspect of the present invention, there is provided the CRT protection device according to any one of the first to fourth aspects, further comprising a front panel attached to the screen surface side of the CRT. Improvements can be made.
[0012]
A sixth invention is the CRT protection device according to any one of the first to fifth inventions, wherein a degaussing coil is disposed in a frame fitted to each of the four sides. Coil can be attached efficiently. Further, it is not necessary to separately prepare a demagnetizing coil mounting member.
[0013]
The seventh invention comprises four frames that are respectively fitted around the four sides of the CRT, and four corner connecting members having protrusions in two different directions so that the four frames are integrally connected at the four corners of the CRT. A step of fitting and connecting the three frames and the two corner connecting members to the three consecutive sides of the CRT in a U-shape, and corner connecting members at both ends of the remaining one frame, respectively. And fitting the remaining one frame to the remaining side of the CRT, and connecting the two corners formed with the U-shape and the two corners connected to the remaining one frame CRT protection characterized by comprising a step of fitting a member, and a step of fastening (screws) a metal fitting attached to the four corners of the CRT to each corner connecting member Obtained by the method of mounting location, it can be efficiently short time fitted with a protective device.
[0014]
Hereinafter, a CRT protection device and its mounting method according to an embodiment of the present invention will be described with reference to the drawings.
[0015]
(Embodiment 1)
1 is an exploded perspective view of a CRT protection device according to Embodiment 1 of the present invention, FIG. 2 is a perspective view of the assembled CRT protection device according to Embodiment 1 of the present invention, and FIG. 3 constitutes FIG. FIG. 4 is a perspective view, a front view and a side view of a corner connecting member constituting FIG. 1, and FIG. 5 is a CRT showing the frame constituting FIG. The principal part sectional drawing of the state which fitted is shown.
[0016]
1 to 5, reference numeral 1 is a CRT (cathode ray tube), 2 is a frame (upper), 3 is a frame (lower), 4 is a frame (left), 5 is a frame (right), 6 is a corner connecting member ( (Upper left), 7 is a corner connecting member (upper right), 8 is a corner connecting member (lower left), 9 is a corner connecting member (lower right), 10 is a front escutcheon, 11 is a CRT mounting bracket, 12 is a CRT mounting screw, 13 is Screw mounting boss, 14 is a CRT positioning rib, 19 is a self-tapping screw hole, 6H is a protrusion protruding in the horizontal direction from the side of the corner connecting member, and 6V is protruded in the vertical direction from the side of the corner connecting member. The protrusion is shown.
[0017]
The CRT protection device according to Embodiment 1 is applied as, for example, a CRT protection device that constitutes a television receiver.
As shown in FIGS. 1 to 5, the CRT protection device according to the present invention includes four frames 2, 3, 4, and 5 that are respectively fitted to four sides (upper and lower, left and right) of the CRT 1, and the four frames 2. , 3, 4, 5 are composed of four corner connecting members 6, 7, 8, 9 that integrally connect the four corners of the CRT 1.
[0018]
The corner connecting members 6 to 9 are formed of rectangular cylinders and are provided with protrusions 6H and 6V in two different directions from the side, that is, in the horizontal direction and the vertical direction.
The corner connecting members 6 to 9 are configured to hold the bosses with ribs extending from the inner corners of the cylindrical body in order to reduce weight and maintain rigidity. A self-tapping screw hole 19 is formed in one end face of the boss.
[0019]
The ends of the four frames 2 to 5 that are fitted to the top and bottom (long side) and the left and right (short side) of the CRT 1 are fitted to the protrusions 6H and 6V.
Moreover, it was set as the structure which carries out the screw fastening to the boss | hub end surface of each corner connection member 6-9 for the attachment metal fitting 11 attached to the four corners of CRT1.
When fastening the screws between the CRT 1 and the corner connecting members 6 to 9, a plurality of ribs 14 are provided at predetermined intervals on the outer surfaces of the corners of the corner connecting members 6 to 9, and the corners of the CRT 1 are positioned by the ribs 14. I made it. Further, the end portion of the rib 14 is surface-trimmed (inclined surface) to provide a guide function when the CRT is mounted.
[0020]
The cross-sectional shapes of the four frames 2 to 5 that are fitted around the four sides of the CRT 1 are the same over the entire length in the longitudinal direction. The cross-sectional shape was any one of a substantially U shape, a substantially rectangular shape, and a substantially L shape. In the first embodiment, a substantially L-shaped frame is used, and bowl-shaped ribs 201 and 201 are arranged to face each other on the lower surface of the horizontal side. Moreover, it was set as the shape which bent the front-end | tip part of each L-shaped side in the shape of a bowl.
The members constituting the frames 2 to 5 were any one of magnesium alloy, aluminum alloy, and zinc alloy. Moreover, it produced by methods, such as extrusion molding. The extruded long frame is appropriately cut into lengths corresponding to the four sides of the CRT.
[0021]
In addition, as shown in FIG. 1, CRT1 consists of a glass tube body, and the neck part protrudes in the back side. A screen surface is provided on the side opposite to the neck portion, and an image is displayed on the screen by irradiation of an electron gun built in the neck.
Usually, the substantially trapezoidal cone-shaped curved surface portion extending from the screen surface side to the panel portion and the neck portion is called the funnel portion.
A metal implosion prevention metal band is wound around the outer periphery of the panel portion. Mounting brackets 11 are disposed on the metal band by means of spot welding or the like so as to be aligned with the four corners of the CRT.
[0022]
Next, an example of an assembly process in which the four frames 2 to 4 and the corner connecting members 6 to 9 at the four corners are connected to the four outer sides (upper and lower left and right) of the CRT will be described.
[0023]
For example, in FIG. 1, three frames 2, 3, 4 and two corner connecting members 6, 8 are fitted and connected in a U shape on three consecutive sides (upper and lower sides) of the CRT 1. A step of fitting the corner connecting members 7 and 9 to both ends of the remaining one frame 5; fitting the remaining one frame 5 to the remaining side (right side) of the CRT 1; The step of fitting the two formed frame ends 2 and 3 and the two corner connecting members 7 and 9 fitted to the remaining one frame 5 and the metal fittings 11 attached to the four corners of the CRT 1 are connected to the respective corner connecting members. 6 to 9 and screw fastening.
[0024]
With the above structure, the CRT protection device according to Embodiment 1 can reduce costs and shorten the protection device manufacturing period. Furthermore, when the CRT protection device is recycled, it is easy to disassemble and improve the recycling rate.
[0025]
The CRT protection device according to the first embodiment may have the following configuration in addition to the above configuration. That is,
The frame includes four frames that are respectively fitted to the four sides of the CRT and four corner connecting members that integrally connect the four frames at the four corners of the CRT. The corner connecting members have recesses in two different directions. The frame ends that are fitted to the long side and the short side of the CRT may be fitted to the recess. (Not shown)
In this case, the method for attaching the protective device to the CRT may be carried out by inserting the frame into the recess provided in the corner connecting member, as in the first embodiment.
[0026]
Furthermore, in the first embodiment, the four frames 2 to 5 and the four corner connecting members 6 to 9 are bonded to the protrusions (or recesses) provided on the side portions, in addition to bonding and screws. Needless to say, the fastening method may be used.
[0027]
(Embodiment 2)
6 is an exploded perspective view of the CRT protection device according to the second embodiment of the present invention, FIG. 7 is a perspective view of the CRT protection device according to the second embodiment of the present invention in an assembled state, and FIG. 8 constitutes FIG. The principal part sectional view of the state where the frame was fitted to CRT is shown. 6-8, the code | symbol 15 shows a demagnetizing coil. Others were the same as in the first embodiment.
[0028]
The CRT protection device according to the second embodiment also has substantially the same configuration and the same assembling method as those of the first embodiment.
[0029]
A different configuration is that a degaussing coil 15 is disposed inside four frames. When constructing a connection type frame structure composed of the frames 2 to 5 and the corner connection members 6 to 9 at the four corners, the degaussing coil 15 is disposed and wound together on the front side of the screen surface.
[0030]
With the above-described configuration, a process of disposing a degaussing coil separately on the outer periphery of the CRT or the funnel portion is unnecessary, and a clean appearance can be obtained.
[0031]
(Embodiment 3)
FIG. 9 is an exploded perspective view of a CRT protection device according to Embodiment 3 of the present invention. In FIG. 9, reference numeral 10 indicates a front escutcheon. Others were the same as in the first embodiment.
[0032]
The protection device for the CRT in the third embodiment also has substantially the same configuration and the same assembling method as in the first embodiment.
A different configuration is that the front escutcheon 10 is fitted from the front side (screen surface side) of the coupled frame structure. The attachment of the front escutcheon 10 may be arbitrarily performed in addition to fitting, such as screw fastening, adhesion, and mechanical fastening.
[0033]
【The invention's effect】
With the above-described configuration, the present invention uses a common member having a simple shape regardless of the screen size of the CRT, and can cope with the protection of the periphery of the CRT of any size.
In addition, by using a common member, cost reduction and protection device manufacturing period can be shortened.
Furthermore, when the CRT protection device is recycled, it is easy to disassemble and improve the recycling rate.
Further, a degaussing coil can be disposed on the front side of the screen surface of the CRT, and the demagnetizing effect can be improved with respect to the screen.
Furthermore, the front escutcheon covers the frame, improving the design of the television receiver and the like.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a CRT protection device according to Embodiment 1 of the present invention. FIG. 2 is a perspective view of an assembled state of a CRT protection device according to Embodiment 1 of the present invention. Fig. 4 is an enlarged perspective view of a main part before the frame to be connected to the corner connecting member. Fig. 4 is a perspective view, a front view and a side view of the corner connecting member constituting Fig. 1. Fig. 5 is a CRT of the frame constituting Fig. 1. FIG. 6 is an exploded perspective view of a CRT protection device according to Embodiment 2 of the present invention. FIG. 7 is an assembled state of the CRT protection device according to Embodiment 2 of the present invention. FIG. 8 is a cross-sectional view of the main part in a state in which the frame constituting FIG. 6 is fitted to the CRT. FIG. 9 is an exploded perspective view of the CRT protection device according to the third embodiment of the present invention. Exploded perspective view showing CRT protection device 【 11 is a perspective view showing the assembled state of FIG. 10 [Description of symbols]
1 CRT
2 frames (top)
3 frames (bottom)
4 frames (left)
5 frames (right)
6 Corner connecting member (upper left)
6H Protrusion (horizontal direction)
6V protrusion (vertical direction)
7 Corner connecting member (upper right)
8 Corner connecting member (lower left)
9 Corner connecting member (lower right)
10 front escutcheon 11 CRT mounting bracket 12 CRT mounting screw 13 screw mounting boss 14 CRT positioning rib 15 degaussing coil 16 frame 201 rib

Claims (1)

The cross-sectional shape is substantially L-shaped, the front ends of the long side of the L-shape and the short side of the L-shape are folded into a bowl shape in the direction that the L-shape surrounds, and the long side of the L-shape is On the side surrounded by the L-shape, the first rib-shaped rib is disposed at a position near the short side of the L-shape, and the second rib-shaped rib is disposed at a position far from the short side of the L-shape. A frame in which the rib and the second rib are arranged to face each other, and the cross-sectional shape is the same shape over the entire length in the longitudinal direction;
Protrusions having a cross-sectional shape passing between the first rib and the second rib are provided in two orthogonal directions, and when fastening with the CRT, a rib is provided on a side of a corner, and the CRT A corner coupling member that positions the corners of
A first degaussing coil fitted between the L-shaped short side of each of the four frames and the first rib;
A second degaussing coil fitted between the second rib of each cross section of the four frames and the bowl-shaped tip of the L-shaped long side;
Have
The four frames are arranged on the four sides of the CRT, the four corner connecting members are arranged at the four corners of the CRT, and both corners of the frame are fitted to the corner connecting members. A CRT protective device comprising: a screw and a metal fitting attached to four corners around the CRT.

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