JP2003341778A - Plasma display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a box body such as a front frame from deforming in a plasma display device. <P>SOLUTION: The plasma display device includes a planar plasma display body 30 including a front frame 31 placed to protect the outer rim of a plasma display panel and having a window aligning with a screen of the plasma display panel, a packaging box for receiving the plasma display body 30, and cushioning members 34a and 34b provided in the packaging box and having a dent 36 into which a corner of the body 30 is to be fitted. A protective sheet 39 is provided at a position to be fitted with the member 34a on the front frame 31 of the body 30. Thus the box body such as the front frame can be prevented from deforming. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a large screen, thin type,
The present invention relates to a plasma display device known as a lightweight display device.

[0002]

2. Description of the Related Art In this plasma display device, ultraviolet rays are generated by gas discharge, and phosphors are excited by the ultraviolet rays to emit light to perform color display. The display cell partitioned by the partition is provided on the substrate, and the phosphor layer is formed on the display cell.

This plasma display device is roughly classified into an AC type and a DC type in terms of driving, and there are two types of discharge types: a surface discharge type and a counter discharge type. However, high definition, large screen and Due to the ease of manufacturing, at present, the mainstream plasma display device is a surface discharge type of three-electrode structure, which has a pair of display electrodes adjacent in parallel on one substrate and the other. It has address electrodes arranged in a direction intersecting with the display electrodes on the substrate, partition walls, and a phosphor layer. Since the phosphor layer can be relatively thick, it is suitable for color display by the phosphor.

Such a plasma display device is
Among the flat panel displays, it is possible to display at a higher speed than a liquid crystal panel, has a wide viewing angle, is easy to upsize, and has a high display quality due to its self-luminous type. It has been particularly attracting attention and is used for various purposes as a display device in a place where many people gather and as a display device for enjoying a large-screen image at home.

First, the structure of the plasma display panel in the plasma display device will be described with reference to FIG. As shown in FIG. 4, a plurality of stripe-shaped display electrodes 2 forming pairs of scan electrodes and sustain electrodes are formed on a transparent front substrate 1 such as a glass substrate, and the electrode groups are covered. Thus, the dielectric layer 3 is formed, and the protective film 4 is formed on the dielectric layer 3.

A plurality of columns covered with an overcoat layer 6 are formed on the rear substrate 5 facing the front substrate 1 so as to intersect the display electrodes 2 of scan electrodes and sustain electrodes. Stripe-shaped address electrodes 7 are formed. A plurality of partition walls 8 are arranged on the overcoat layer 6 between the address electrodes 7 in parallel with the address electrodes 7, and a phosphor layer 9 is provided on a side surface between the partition walls 8 and a surface of the overcoat layer 6. There is.

The substrate 1 and the substrate 5 are a display electrode 2 and an address electrode 7 which are scan electrodes and sustain electrodes.
Are arranged so as to be substantially orthogonal to each other, and are opposed to each other with a minute discharge space interposed therebetween, and the periphery is sealed, and one kind of helium, neon, argon, and xenon or a mixed gas is discharged into the discharge space. It is enclosed as a gas. Further, the discharge space is partitioned into a plurality of partitions by partition walls 8 to provide a plurality of discharge cells at which the intersections of the display electrodes 2 and the address electrodes 7 are located, and each of the discharge cells has red, green, and blue. The phosphor layers 9 are sequentially arranged for each color so that

FIG. 5 shows an electrode array of this plasma display panel. As shown in FIG. 5, the scan electrodes, the sustain electrodes and the address electrodes have a matrix structure of M rows × N columns, and in the row direction. M rows of scan electrodes SCN1 to SCNM and sustain electrodes SUS1 to
Address electrodes D1 of N columns in which the SUSMs are arranged in the column direction
~ DN are arranged.

In the plasma display panel having such an electrode structure, by applying a write pulse between the address electrode and the scan electrode, an address discharge is generated between the address electrode and the scan electrode, and after selecting a discharge cell. , Between the scan electrode and the sustain electrode,
By applying a periodic sustain pulse that is alternately inverted, a sustain discharge is generated between the scan electrode and the sustain electrode, and a predetermined display is performed.

FIG. 6 shows an example of the overall configuration of a plasma display body incorporating the panel having the above-described structure. In the figure, the housing that houses the panel 10 is
The front cover 11 is composed of a front frame 11 and a metal back cover 12, and an opening of the front frame 11 is made of glass or the like that also serves as an optical filter and protects the panel 10.
Are arranged. Further, for example, silver vapor deposition is applied to the front cover 13 in order to suppress unnecessary radiation of electromagnetic waves. Further, the back cover 12 has a plurality of ventilation holes 12 for releasing heat generated in the panel 10 and the like to the outside.
a is provided.

The panel 10 is held by being bonded to the front surface of a chassis member 14 made of aluminum or the like via a heat conductive sheet 15, and the chassis member 14 is then held.
A plurality of circuit blocks 16 for driving the display of the panel 10 are attached to the rear surface side. The heat conductive sheet 15 is for efficiently transmitting the heat generated in the panel 10 to the chassis member 14 and radiating the heat. The circuit block 16 includes an electric circuit for driving the display of the panel 10 and controlling the display. The electrode block extending to the edge of the panel 10 extends beyond the four edges of the chassis member 14. It is electrically connected by a plurality of extending flexible wiring boards (not shown).

On the rear surface of the chassis member 14, a boss portion 14a for mounting the circuit block 16 and fixing the back cover 12 is provided by projecting integrally by die casting or the like. The chassis member 14
May be constructed by fixing a fixing pin to an aluminum flat plate.

FIG. 7 is a view showing a situation where the flat plate-shaped plasma display main body 20 shown in FIG. 6 is accommodated in a packaging box. The rectangular parallelepiped packaging box includes a lower box 21a having a small size in the height direction and an upper box 21b having a large size in the height direction which is covered over the lower box 21a.
Buffer members 22a, 22b, 23a, 23b are respectively arranged on the inner surface of the bottom of the la 1a and the inner surface of the upper portion of the upper box 21b, and the plasma display main body 20 covered with the packaging sheet 24 is held by the buffer members 22a, 22b, 23a, 23b. It is stored in the packaging box.

Further, the cushioning member 22a is arranged at a corner portion of the lower box 21a, the cushioning member 22b is arranged at substantially the central portion of the lower box 21a, and a recess 25 for fitting the plasma display main body 20 shown in FIG. 6 is provided. Has been.
Further, the cushioning member 23a is arranged at a corner portion of the upper box 21b, the cushioning member 23b is arranged at substantially the center of the upper box 21b, and like the cushioning members 22a and 22b, respectively.
A recess 25 is provided in which the plasma display body 20 is fitted.

[0015]

By the way, in such a plasma display device, in order to provide the plasma display device at a low cost, the housing, particularly the front frame 11 is made of a resin molded product. Is starting to appear.

However, as shown in FIG. 7, the flat plate-shaped plasma display main body 20 is accommodated in a packaging box in an upright state and is transported while maintaining the upright state, but the plasma display main body is vibrated during transportation. A vertical force is applied to 20, and the force applied at that time causes the plasma display main body 20 to have a flat plate shape, so that the plasma display main body 20 may move up and down in the concave portions 25 of the cushioning members 22a and 22b.

Moreover, when the plasma display main body 20 moves up and down in the recesses 25 of the buffer members 22a and 22b in this way, the plasma display main body 20 and the
Frictional heat is generated between the cushioning member 22a having a large contact area, and the heat at that time deforms the housing such as the front frame that is made of the resin molded product as described above. It may end up.

The present invention has been made in view of the above circumstances, and an object thereof is to prevent deformation of a housing such as a front frame.

[0019]

In order to achieve the above object, the plasma display device of the present invention is provided with a protective sheet at a portion of the front frame of the plasma display main body, which is fitted to the buffer member.

[0020]

That is, the invention according to claim 1 of the present invention is a front frame which is arranged so as to protect the outer edge portion of the plasma display panel and which has a window fitted to the display surface of the plasma display panel. A flat plate-shaped plasma display body having a, a packaging box that accommodates the plasma display body, and a cushioning member that is disposed in the packaging box and has a recess in which a corner portion of the plasma display body fits, In the front frame of the plasma display body, a protective sheet is provided at a portion fitted to the buffer member.

The invention described in claim 2 is the same as claim 1
In the above, the protective sheet is configured by disposing a fibrous sheet on the surface of the resin sheet on the front frame side.

Further, the invention according to claim 3 is the invention according to claim 1, wherein the front frame is formed by molding a heat resistant resin.

A plasma display device according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 3, but the embodiment of the present invention is not limited to this.

FIG. 1 is a diagram showing an entire plasma display device according to an embodiment of the present invention, FIG. 2 is a diagram showing the plasma display body, and FIG. 3 is a diagram showing a protective sheet.

In FIG. 1, the flat plate-shaped plasma display main body 30 has the same structure as that shown in FIG. 6, and is arranged so as to protect the outer edge of the plasma display panel (not shown). It has a front frame 31 having a window 31a adapted to the display surface of the plasma display panel. The front frame 31 is formed by molding a heat-resistant resin into a frame shape, and the window 31a has a transparent front cover 32 made of glass or the like that also serves as an optical filter and protects the plasma display panel. Has been done. Also, this front frame 3
The 1 and the front cover 32, together with a back cover (not shown), form a housing.

The rectangular parallelepiped packaging box for accommodating the flat plate-shaped plasma display main body 30 includes a lower box 33a made of corrugated cardboard having a small dimension in the height direction, and the lower box 33.
It is composed of an upper box 33b made of corrugated cardboard having a large dimension in the height direction overlaid on a. Then, on the bottom inner surface of the lower box 33a and the top inner surface of the upper box 33b,
The buffer members 34a, 34b, 35a, 35b are arranged, and the plasma display main body 30 covered with a packaging sheet (not shown) is the buffer members 34a, 34b, 35.
It is held by a and 35b and housed in the packaging box.

Further, the cushioning member 34a is arranged at a corner portion of the lower box 33a, the cushioning member 34b is arranged at substantially the center of the lower box 33a, and a concave portion 36 into which the plasma display main body 30 is fitted is provided. Further, the cushioning member 35a is arranged at a corner portion of the upper box 33b, the cushioning member 35b is arranged substantially at the center of the upper box 33b, and the recess 36 is formed in the plasma display body 30 like the cushioning members 34a and 34b. Is provided.

Reference numeral 37 is the plasma display main body 3
An accessory box accommodating the remote control device of No. 0, a connection cable, and the like, and 38 is a top plate made of corrugated cardboard arranged between the cushioning members 35a and 35b and the upper box 33b.

As described above, since the flat plate-shaped plasma display body 30 is accommodated in the packaging box in an upright state and is transported while maintaining the upright state, the plasma display body 30 is vibrated during transportation. A vertical force is applied to the plasma display main body 30, and the plasma display main body 30 moves up and down in the recesses 36 of the buffer members 34a and 34b by the force applied at that time.
Friction heat is generated between the shock absorber and the cushioning member 34a.

Here, in the present invention, as shown in FIG.
In the front frame 31 of the plasma display main body 30, L-shaped protective sheets 39 are arranged at the left and right corners that fit into the recesses 36 of the buffer member 34a. The protective sheet 39 protects the two corners on the bottom side of the front frame 31 of the plasma display body 30 and uses an adhesive tape (not shown) with an adhesive tape (not shown) so that it can be easily removed when unpacking. Three
It is attached to 0.

As shown in FIG. 3, the protective sheet 39 is a resin sheet 39a such as a polypropylene film.
Is a structure in which a fibrous sheet 39b made of cotton is superposed and arranged on the inner surface of the front frame 31, that is, on the surface of the front frame 31, and two members having an L-shaped cross section are combined and bonded so as to form an L-shape. It is configured by fixing with a tape 40. In addition, a window 4 is provided at a position corresponding to the power switch and the power display lamp of the plasma display body 30.
1 is open. Although it is necessary to dispose the protective sheets 39 at the two corners on the bottom side of the plasma display body 30, in the present embodiment, as shown in FIG.
As shown in FIG. 5, the protective sheet 39 has an L-shape, so that it can be used commonly at two corners on the left and right.

That is, since the L-shaped protective sheet 39 is arranged at the corner portion of the front frame 31 of the plasma display body 30 which fits into the concave portion 36 of the cushioning member 34a as described above, vibration during transportation is generated. A vertical force is applied to the plasma display main body 30 by this, and even if the plasma display main body 30 moves up and down in the recesses 36 of the buffer members 34a and 34b by the force applied at that time, the protective sheet 39 and the buffer member 34a Even if the front frame 31 of the plasma display body 30 and the cushioning member 34a are not rubbed with each other, frictional heat is not generated between the front frame 31 and the cushioning member 34a. It is possible to prevent thermal deformation of the.

In this embodiment, an example in which only the front frame 31 is made of a resin molded product has been described. Of course, when the back cover is also made of a resin molded product, the front frame 3 is formed.
1 and the protective sheet 39 may be arranged so as to protect the two corners on the bottom side of the back cover.

[0034]

As is apparent from the above description, according to the plasma display device of the present invention, a vertical force is applied to the plasma display body due to vibration during transportation, and the plasma display body moves up and down in the buffer member. Even if the front frame of the plasma display body and the cushioning member do not generate frictional heat, this prevents thermal deformation of the front frame due to frictional heat even when the front frame is made of a resin molded product. be able to.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an overall configuration of a plasma display device according to an embodiment of the present invention.

FIG. 2 is a front view showing a plasma display body of the plasma display device.

FIG. 3 is a perspective view showing a protective sheet of the plasma display device.

FIG. 4 is a perspective view showing a schematic configuration of a panel of a general plasma display device.

FIG. 5 is an explanatory view showing an electrode array of the panel of the plasma display device.

FIG. 6 is an exploded perspective view showing an internal arrangement structure of the plasma display device.

FIG. 7 is an exploded perspective view showing the overall configuration of the plasma display device.

[Explanation of symbols] 30 Plasma display body 31 Front frame 33a Lower box 33b Upper box 34a, 34b, 35a, 35b cushioning member 36 recess 39 Protective sheet 39a Resin sheet 39b Fibrous sheet

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G09F 9/313 B65D 81/06 AF term (reference) 3E037 AA20 BA03 BB03 BB08 CA03 3E066 AA03 HA01 JA03 MA09 NA08 3E067 AB51 AB61 BA06C BA15B BA33A BA33C BB02C BB14B EC24 EC27 EC31 EC35 ED04 ED07 ED12 EE21 EE28 FA02 GD03 5C094 AA36 AA37 BA31 FA01 FB20 HA08 5G435 AA07 BB06 EE13 GG42 HH18 LL04

Claims (3)

[Claims] 1. A flat plate-shaped plasma display body having a front frame which is arranged so as to protect an outer edge portion of the plasma display panel and has a window aligned with a display surface of the plasma display panel, and the plasma display body. And a cushioning member that is disposed in the packaging box and that has a recessed portion into which the corner portion of the plasma display body fits, and a portion that fits into the cushioning member in the front frame of the plasma display body. A plasma display device, characterized in that a protective sheet is provided on the inside. 2. The plasma display device according to claim 1, wherein the protective sheet is formed by disposing a fibrous sheet on the surface of the resin sheet on the front frame side. 3. The plasma display device according to claim 1, wherein the front frame is formed by molding a heat resistant resin.