JP2004126456A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stand device for a display device which secures strength and enhances safety while maintaining cost and machinability. <P>SOLUTION: The display device is provided with a bracket 18 which is arranged on a display main body 1 like a flat plate and has an attachment hole 18a and a stand device 2 which has a pole 3 to be attached to the attachment hole 18a of the bracket 18 and holds the display main body 1 in a standing state, and the pole 3 is constituted by inserting a reinforcing shaft 3b to a hollow pole main body 3a. Thus the strength is secured while suppressing the rise of cost and maintaining toolability, and falling of the display main body is prevented even if it is destructed. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a large-screen thin display device such as a plasma display device.
[0002]
[Prior art]
2. Description of the Related Art In recent years, a plasma display device has attracted attention as a display panel (thin display device) having excellent visibility, and high definition and a large screen have been promoted.
[0003]
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. At present, an AC-type and surface-discharge type plasma display device has become the mainstream due to its characteristics.
[0004]
In such a plasma display device, a plasma display panel (hereinafter referred to as a panel) in which a pair of transparent glass substrates are opposed to each other so that a discharge space is formed therebetween, and an electrode group is arranged on the glass substrate. And a display drive circuit block attached to the chassis member and applying a signal to the panel to perform display by applying a signal to the panel module, and the panel module is covered with a housing to complete the panel module. (See Patent Document 1).
[0005]
Such a plasma display device has a feature that a large screen is easily realized as compared with other display devices such as a liquid crystal display device and a CRT, and a clearer image is obtained as compared with other large display devices. For this reason, it has attracted attention as an information display device in a place where many people gather and as an image device that can enjoy powerful images at home.
[0006]
On the other hand, while this plasma display device is easy to realize a large screen, a large glass substrate is required as a glass substrate which is a main component of the panel, and an image is formed by selectively discharging a plurality of discharge cells with plasma. Therefore, in the plasma display device, it is required to consider a countermeasure for matters that need not be considered in other display devices.
[0007]
[Patent Document 1]
Patent No. 2807672
[Problems to be solved by the invention]
In a plasma display device featuring such a large screen, an aluminum die-casting pole is attached to the bracket placed on the display body in consideration of cost and workability as a stand device necessary for installing it. It is thought that it has a structure that does.
[0009]
In a stand device using this aluminum die-cast pole, sufficient strength can be ensured in normal use, but in a special use environment such as repeated shaking, conditions where repeated stress is applied to the pole portion of the stand In this case, there is a possibility that damage due to metal fatigue may occur. For this reason, it is conceivable to change the material of the pole of the stand device to a material having a higher strength than aluminum, such as iron or stainless steel. However, there is a problem that productivity is reduced in cost, particularly in workability.
[0010]
It is an object of the present invention to solve such problems and to secure strength and enhance safety while maintaining cost and workability.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, a display device of the present invention has a bracket disposed on a flat display body and having a mounting hole, and a pole mounted in the mounting hole of the bracket, and the display body is erected. A stand device for holding the pole in a state, wherein the pole is configured by inserting a reinforcing shaft into a hollow pole main body.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
That is, the invention according to claim 1 of the present invention is a state in which the display body is provided with a bracket disposed on the flat display body and having a mounting hole, and a pole mounted in the mounting hole of the bracket. The pole is configured by inserting a reinforcing shaft into a hollow pole main body.
[0013]
According to a second aspect of the present invention, in the first aspect, the pole is formed by insert-molding an iron reinforcing shaft on a pole body made of aluminum die-cast.
[0014]
According to a third aspect of the present invention, in the first aspect, the mounting hole is screwed into the upper position and the lower position of the bracket, and the upper fixing screw and the lower fixing screw projecting into the mounting hole in which the pole is mounted. The mounted pole is fixed to a bracket, and the reinforcing shaft is inserted so as to be arranged from the root of the pole to between the upper fixing screw and the lower fixing screw.
[0015]
Hereinafter, a plasma display device according to an embodiment of the present invention will be described with reference to FIGS.
[0016]
FIG. 1 shows the whole appearance of a plasma display device according to an embodiment of the present invention as viewed from the rear side, FIG. 2 shows the state as viewed from the side, and FIGS. Is shown.
[0017]
In the drawing, reference numeral 1 denotes a flat display body, on which a bracket having a mounting hole is provided as described later. Reference numeral 2 denotes a stand device provided with a pole 3 to be mounted in a mounting hole of a bracket of the display main body 1, and holds the display main body 1 in an upright state. 4 and 5 show an example of the display main body 1. FIG.
[0018]
As shown in FIGS. 4 and 5, the housing for accommodating the panel 10 includes a front frame 11 and a metal back cover 12. The opening of the front frame 11 protects the optical filter and the panel 10. A front cover 13 made of glass or the like is also provided. The front cover 13 is coated with, for example, silver to suppress unnecessary radiation of electromagnetic waves. Further, the back cover 12 is provided with a plurality of ventilation holes 12a for releasing heat generated in the panel 10 and the like to the outside.
[0019]
The panel 10 is held by being adhered to the front surface of a chassis member 14 made of aluminum or the like via a heat conductive sheet 15, and the panel 10 is displayed on the rear surface side of the chassis member 14 as shown in FIG. A plurality of circuit blocks 16 for driving are mounted. The heat conductive sheet 15 is for efficiently transmitting the heat generated in the panel 10 to the chassis member 14 and dissipating heat. Further, the circuit block 16 includes an electric circuit for performing display driving of the panel 10 and controlling the same, and the electrode drawing portion drawn to the edge portion of the panel 10 extends beyond the four edge portions of the chassis member 14. It is electrically connected by a plurality of flexible wiring boards 17 extending. A boss 14a for attaching the circuit block 16 and fixing the back cover 12 is formed on the rear surface of the chassis member 14 by integral molding using die casting or the like. The chassis member 14 may be configured by fixing a fixing pin to an aluminum flat plate.
[0020]
Further, a cylindrical bracket 18 to which the pole 3 of the stand device 2 is attached is attached to a position of a lower end portion of the chassis member 14 of the display main body 1 in a height direction by screws (not shown).
[0021]
That is, as shown in FIG. 3, the tip of the pole 3 attached to the stand device 2 is inserted into the mounting hole 18 a of the bracket 18, penetrates the back cover 12, and can be tightened from the outside of the display body 1. By fixing the pole 3 to the bracket 18 with the screw 4 and the lower fixing screw 5, the display main body 1 is attached to the stand device 2, whereby the display main body 1 can be held upright.
[0022]
As shown in FIG. 3, the pole 3 is configured by inserting an iron pipe-shaped reinforcing shaft 3b by insert molding into a pole body 3a made of aluminum die cast. That is, at the time of die-cast molding of the pole 3, the reinforcing shaft 3b made of iron is placed in a mold in advance, and insert molding is performed. After the molding, the pole 3 is provided with a hole 3c by secondary processing.
[0023]
The upper fixing screw 4 and the lower fixing screw 5 are screwed into fixing holes 18b provided at the upper position and the lower position of the bracket 18, and the tip ends project into a mounting hole 18a in which the pole 3 is mounted. The pole 3 is fixed to the bracket 18 by engaging the protruding tip with the hole 3c of the pole 3 mounted in the mounting hole 18a of the bracket 18.
[0024]
Further, in the present embodiment, the reinforcing shaft 3b of the pole 3 is inserted so as to be arranged from the base of the pole 3 to between the upper fixing screw 4 and the lower fixing screw 5.
[0025]
Explaining the reason, in the display device having the above-described configuration, when the stand is fixed to a special use environment such as repeated shaking, for example, in a cabin of a ship having large shaking, the stand is easily installed, Under the condition that the pole 3 of the stand device 2 is repeatedly subjected to stress, such as when hanging down and playing, the pole 3 may be damaged by metal fatigue.
[0026]
When the pole 3 without the reinforcing shaft 3b is used, according to the experiments of the present inventors, as shown in FIG. 6, the root portion of the pole 3 is damaged, and the display main body 1 is separated from the stand device 2. You will fall.
[0027]
On the other hand, as in the present embodiment, the iron reinforcing shaft 3b is inserted from the base of the pole 3 to the space between the upper fixing screw 4 and the lower fixing screw 5 so that the reinforcing shaft 3b is arranged. The pole 3 with the built-in 3b retains its strength against repeated stress up to the position where the reinforcing shaft 3b made of iron is disposed. As shown in FIG. Occurs. In this case, of the two fixing screws fixing the pole 3 and the bracket 18, the lower fixing screw 5 fixes the pole 3 at the position where the iron reinforcing shaft 3b is arranged. If the display body 1 is damaged, the display body 1 is prevented from falling down.
[0028]
Note that the insertion position of the reinforcing shaft 3b is not limited to between the upper fixing screw 4 and the lower fixing screw 5 as in the above-described embodiment. When the length is increased and the position of the lower fixing screw 5 is located away from the base of the pole 3, the tip of the reinforcing shaft 3 b reaches between the upper fixing screw 4 and the lower fixing screw 5. Even if the structure is not used, the reinforcing shaft 3b having a higher strength than the pole body 3a is inserted, so that the aluminum portion of the pole body 3a having relatively weak strength against the repeated stress is damaged as described above. Since the portion where the reinforcing shaft 3b is inserted is left attached to the bracket 18, even if the pole 3 is broken, it is less reliable than the above-described embodiment, Not that i body 1 resulting in a fall easily.
[0029]
【The invention's effect】
As is apparent from the above description, according to the display device of the present invention, it is possible to secure the strength while maintaining the workability while suppressing the cost, and to prevent the display body from overturning even if it is damaged. The effect that it can be obtained is obtained.
[Brief description of the drawings]
FIG. 1 is a perspective view of a plasma display device according to an embodiment of the present invention as viewed from the rear. FIG. 2 is a plan view of the same viewed from the side. FIG. 3 is an enlarged cross-sectional view of a portion A in FIG. FIG. 4 is an exploded perspective view showing an example of a display main body of the display apparatus. FIG. 5 is a plan view showing an internal arrangement structure of the display main body. FIG. 6 does not have a reinforcing shaft on a pole of a stand apparatus in the plasma display apparatus. FIG. 7 is a cross-sectional view showing a broken position in the case. FIG. 7 is a cross-sectional view showing a broken position of a pole of the stand device according to the present invention.
DESCRIPTION OF SYMBOLS 1 Display main body 2 Stand apparatus 3 Pole 3a Pole main body 3b Reinforcement shaft 4 Upper fixing screw 5 Lower fixing screw 18 Bracket

Claims (3)

A bracket disposed on the flat display body and having a mounting hole, and a stand device having a pole mounted in the mounting hole of the bracket and holding the display main body in an upright state, wherein the pole includes: A display device constructed by inserting a reinforcing shaft into a hollow pole body. The display device according to claim 1, wherein the pole is formed by insert-molding an iron reinforcing shaft on a pole body made of aluminum die-cast. The pole attached to the mounting hole is fixed to the bracket with the upper fixing screw and the lower fixing screw that are screwed into the upper and lower positions of the bracket and project into the mounting hole where the pole is mounted, and the reinforcing shaft is attached to the pole. The display device according to claim 1, wherein the display device is inserted so as to be arranged from a root portion to between the upper fixing screw and the lower fixing screw.

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