JP4214751B2 - Display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a large-screen thin display device such as a plasma display device.
[0002]
[Prior art]
In recent years, plasma display devices have attracted attention as display panels (thin display devices) with excellent visibility, and higher definition and larger screens are being 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. Therefore, at present, AC-type and surface-discharge-type plasma display devices are mainly used.
[0004]
In such a plasma display device, a pair of transparent glass substrates are arranged so as to face each other so that a discharge space is formed therebetween, and an electrode group is arranged on the glass substrate (hereinafter referred to as a panel), and this panel A panel module is composed of a chassis member that holds the frame and a display drive circuit block that is attached to the chassis member and applies a signal to the panel to perform display, and the panel module is covered with a casing to form a finished product. (See Patent Document 1).
[0005]
Such a plasma display device has a feature that it is easy to realize a large screen as compared with other display devices such as a liquid crystal display device and a CRT, and a clear image can be obtained as compared with other large display devices. For this reason, it is attracting attention as an information display device in a place where many people gather, and as a video 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 obtained by selectively plasma-discharging a plurality of discharge cells. Therefore, in the plasma display device, it is required to examine measures for matters that need not be considered in other display devices.
[0007]
[Patent Document 1]
Japanese Patent No. 2807672 [0008]
[Problems to be solved by the invention]
In a plasma display device featuring such a large screen, as a stand device necessary to install it, an aluminum die-cast pole is attached to a bracket placed on the display body in consideration of cost and workability The thing of the structure to be considered is considered.
[0009]
In the stand device using this aluminum die-cast pole, sufficient strength is secured in normal use, but in a special usage environment such as shaking repeatedly, the stand pole part is subject to repeated stress. In this case, 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 strength higher than that of aluminum such as iron or stainless steel. However, there is a problem that the productivity is lowered in terms of cost, particularly workability.
[0010]
An object of the present invention is 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 according to the present invention has a bracket disposed on a flat plate-shaped 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 body.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
That is, the invention according to claim 1 of the present invention is a state in which the display body is erected with a bracket disposed on the flat display body and having a mounting hole, and a pole mounted on the mounting hole of the bracket. The pole is constructed by inserting a reinforcing shaft into a hollow pole 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 upper fixing screw and the lower fixing screw projecting into the mounting hole screwed into the upper position and the lower position of the bracket and projecting to the pole are attached to the mounting hole. The mounted pole is fixed to the bracket, and the reinforcing shaft is inserted and attached so as to be arranged from the base portion 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 overall 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. Show.
[0017]
In the figure, reference numeral 1 denotes a flat display main body on which a bracket having a mounting hole is disposed as will be described later. Reference numeral 2 denotes a stand device provided with a pole 3 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. An example of the display main body 1 is shown in FIGS.
[0018]
As shown in FIGS. 4 and 5, the housing that accommodates the panel 10 is composed of a front frame 11 and a metal back cover 12, and the optical filter and the panel 10 are protected at the opening of the front frame 11. A front cover 13 made of glass or the like is also disposed. Further, the front cover 13 is subjected to, for example, silver vapor deposition in order 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 bonded 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 attached. The heat conductive sheet 15 is for efficiently transferring the heat generated in the panel 10 to the chassis member 14 to radiate heat. Further, the circuit block 16 includes an electric circuit for performing display driving of the panel 10 and its control, and the electrode lead-out portion led out to the edge portion of the panel 10 extends beyond the four edge portions of the chassis member 14. They are electrically connected by a plurality of extending flexible wiring boards 17. Further, a boss portion 14a for attaching the circuit block 16 or fixing the back cover 12 is protruded from 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]
In addition, a cylindrical bracket 18 to which the pole 3 of the stand device 2 is attached is attached to the position of the lower end portion in the height direction of the chassis member 14 of the display main body 1 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 screws 4 and the lower fixing screws 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 constructed by inserting and inserting an iron pipe-shaped reinforcing shaft 3b into an aluminum die-cast pole body 3a. That is, at the time of die-casting the pole 3, an iron reinforcing shaft 3b is arranged in advance in a mold and insert-molded. 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 tips protrude from the mounting holes 18a to which the poles 3 are mounted. The protruding tip is engaged with the hole 3c of the pole 3 mounted in the mounting hole 18a of the bracket 18, so that the pole 3 is fixed to the bracket 18 in a mounted state.
[0024]
Further, in the present embodiment, the reinforcing shaft 3 b of the pole 3 is inserted and attached so as to be arranged from the root portion of the pole 3 to between the upper fixing screw 4 and the lower fixing screw 5.
[0025]
The reason for this will be explained. In the display device having the above-described configuration, when the stand is fixed and installed in a special use environment such as shaking repeatedly, for example, in a ship cabin that greatly shakes, it is easy for children. There is a possibility that the pole 3 may be damaged due to metal fatigue under the condition that the pole 3 of the stand device 2 is repeatedly stressed, such as when hanging around and playing.
[0026]
When the pole 3 without the reinforcing shaft 3b is used, according to the experiments by the present inventors, the base portion of the pole 3 is damaged and the display body 1 is separated from the stand device 2 as shown in FIG. Will fall.
[0027]
On the other hand, as in the present embodiment, the steel reinforcing shaft 3b is inserted and attached so that the reinforcing shaft 3b is disposed from the base portion of the pole 3 to the upper fixing screw 4 and the lower fixing screw 5. The pole 3 with the built-in 3b is maintained in strength up to the position where the steel reinforcing shaft 3b is arranged against repeated stress, and as shown in FIG. Arise. In this case, among 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 disposed. Even if breakage occurs, the display body 1 is prevented from falling.
[0028]
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, and includes, for example, the bracket 18 and the pole 3 When the length is increased and the position of the lower fixing screw 5 is away from the base portion of the pole 3, the tip of the reinforcing shaft 3b reaches between the upper fixing screw 4 and the lower fixing screw 5. Even if the structure does not, the reinforcement shaft 3b having a strength higher than that of the pole body 3a is inserted, so that the aluminum portion of the pole body 3a is relatively weak against the repeated stress as described above. Since the portion where the reinforcing shaft 3b is inserted remains attached to the bracket 18, even if the pole 3 is damaged, the reliability is inferior to that of the above embodiment. Not that i body 1 resulting in a fall easily.
[0029]
【The invention's effect】
As is clear from the above description, according to the display device of the present invention, while maintaining the workability while keeping the cost down, the strength is ensured, and even if it is broken, the display body can be prevented from overturning. The effect that it can be 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 side. FIG. 2 is a plan view of the same side view. 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 the display main body of the apparatus. FIG. 5 is a plan view showing an internal arrangement structure of the display main body. FIG. FIG. 7 is a cross-sectional view showing a damaged position of a pole of a 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 part fixing screw 5 Lower part fixing screw 18 Bracket

Claims (3)

A bracket having a mounting hole disposed in a flat plate-shaped display body, and a stand device that has a pole mounted in the mounting hole of the bracket and holds the display body in an upright state, 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 configured by insert-molding an iron reinforcing shaft into a pole body made of aluminum die cast. The pole fixed to the mounting hole is fixed to the bracket by 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 attached so as to be arranged from a root portion to between the upper fixing screw and the lower fixing screw.

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