JP5347265B2 - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display apparatus in which an increase in size and a decrease in thickness are achieved without an increase in weight while maintaining its rigidity. <P>SOLUTION: The display apparatus uses a liquid crystal panel, a plasma light emitting element, an organic EL element, etc. The display apparatus includes: a display section incorporating a display element and a control circuit; a skeleton disposed so as to surround the circumference of the display section; and an outer shell covering the skeleton from rear. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present technology relates to display devices such as liquid crystal televisions and organic EL televisions, which have been rapidly becoming thinner and lighter in recent years.

  In recent years, an increase in the size of a display device using a liquid crystal panel, a plasma light emitting element, an organic EL element, or the like is rapidly progressing. At the same time, the need for display devices has been rapidly expanding recently against the backdrop of the design and space saving of display devices. As described above, there is a strong demand for the development of a technology that achieves both a large display device and a thin display device.

  However, when the display device is increased in size and thickness, there is a problem that the rigidity is lowered and the display device is easily deformed. Since excessive deformation of the display device causes damage to the display, it is necessary to maintain rigidity.

Conventionally, when advancing the size increase, a reduction in rigidity using a reinforcing member has been taken because a reduction in thickness is not excessively required. For example, in the case of a liquid crystal display, there is a part called a backlight, and a part called a backlight chassis that has been processed with sheet metal is used to support it, but this thickness is increased, and four walls are bent to form a standing wall. In some cases, a method of increasing the cross-sectional second moment is employed (for example, Patent Document 1).
JP 2007-86648 A

  However, now that the thinning of the backlight chassis itself is required in addition to the increase in size, the thinning of the backlight chassis itself has been demanded, so the overall rigidity is maintained simply by improving the rigidity of the backlight chassis. It's getting harder to do. In addition, the method of adding a reinforcing member also reduces the effect of maintaining rigidity if the shape satisfies the demand for thinning, and in addition, there is a problem that deformation due to an increase in the weight due to an increase in the number of parts cannot be ignored. is there.

  An object of the present invention is to provide a display device that can be increased in size and thickness while maintaining rigidity without increasing the weight.

  First, the present inventors examined the behavior of the display device when it was made thinner and larger using numerical analysis. As a result, it has been found that when the thickness of the display device falls below a certain thickness, the rigidity rapidly decreases. Thus, as a result of examining the cause, the present inventors have found that the cause is that the deformation behavior in the thickness direction of the display device changes greatly.

  Therefore, the present inventors have examined again how the rigidity of the display device is maintained. As a result, it has been found that the rigidity of the display device is maintained by a member in the thickness direction, and by using an appropriate part for this part, it has been found that the reduction in thickness and the increase in size can be achieved at once. Furthermore, as a result of intensive studies on the structure, the inventors have found a structure that can achieve a significant weight reduction. In addition, it has been found that with this structure, heat generated inside the display device can be quickly discharged out of the system, and as a result, the operational stability of the display device can be increased.

The present invention has been made by integrating the above findings and further diligently examining them. The above problem is solved by the following means.
[1] A display device using a liquid crystal panel, a plasma light emitting element, and an organic EL element,
A display unit including a display element and a control circuit;
A framework that is arranged so as to surround the outer periphery of the display unit, and is formed by welding a steel material having a plate thickness of 0.4 mm to 1.8 mm into a hollow shape having a height and width of 5 mm to 40 mm by welding;
Covering the framework from the back, and comprising an outer shell made of a steel material having a thickness of 0.2 mm to 1.0 mm as a single piece,
The framework further has a gap through which the outer shell can be inserted,
The outer shell has a three-fold structure, and the end of the bent end surface constitutes a check claw,
The display device, wherein the frame and the outer shell are coupled by fitting the check claw into the gap between the frames.

[2] The display device according to [1] , wherein a stationary jig or a wall hanging jig is attached to the frame.

[3] In the display device according to [2], the material of the prior SL stationary jig or wall hanging jig, thermal conductivity, characterized in that used as the 10W / (m · K) or higher Display device.

  According to the present invention, it is possible to realize an increase in size and thickness of a display device and a reduction in weight which has been difficult in the past. Furthermore, by setting the position of the attachment jig to a predetermined position, it is possible to reduce the temperature inside the device and to stabilize the operation of the apparatus.

The best mode for carrying out the present invention will be described below. FIG. 1 is a diagram showing a configuration example of a display device according to the present invention. In the figure, 1 is a framework, 2 is an outer shell, 3 is a display unit, 4 is a wall hanging jig, 5 is a stationary jig, and 6 is a display device.

  The display device 6 includes a display unit 3 in which a display element and a control circuit are incorporated, a skeleton 1 arranged so as to surround the outer periphery of the display unit 3, a wall-hanging jig 4 coupled to the skeleton 1, or a stationary It is comprised from the jig | tool 5 and the outer shell 2 which covers the frame 1 from the back.

  The rigidity and strength of the display device 6 are mainly maintained by the rigidity, torsional rigidity, and strength of the skeleton 1 and prevent deformation of the display unit 3. As long as the material used for the framework 1 is a material having a high elastic modulus and excellent strength, any material may be used. In particular, metal is excellent in specific strength and easy to process. Is preferred. The specific strength is represented by a numerical value obtained by dividing the strength of the material by the weight per unit volume (specific weight). If the specific strength value is high, higher strength can be obtained with the same weight, that is, lighter weight can be achieved if an object having the same strength is made. In particular, a steel material containing iron as a main component is extremely preferable in that it has a high specific strength, is easy to process, is inexpensive, and can be expected to provide a stable supply.

  In addition, when using steel materials, as a method of constructing a framework, for example, (1) a method using a pipe, die steel, or steel bar, (2) a method of bending a plate to give a rod-like shape, or (3 A method of forming a rod-like shape by joining a plurality of plates by welding or the like, and (4) a method of forming a substantially rod shape by bending the outer peripheral portion of the iron plate. Any of them may be used in the present invention. Also, as shown in FIG. 2 (b), for example, after forming the framework by bending the outer periphery of the plate, another member may be joined to the vicinity thereof to obtain more rigidity and strength.

  Furthermore, considering the ease of joining with the outer shell 2 described later, the framework 1 has a shape with a corner as shown in FIG. 2 and a gap (FIG. 4 (c)) for fitting the outer shell. Such a structure is preferable. The process of bending the sheet metal to form a framework is preferable because the structure as shown in FIG. 2 can be formed relatively easily.

  The height and width of the frame shown in FIG. 2 (a) may be appropriately determined in consideration of the design of the display device and the like. In view of the object of the present invention to improve the rigidity, it is preferable that the height and width are 5 mm or more. In the present invention, the length in the direction corresponding to the thickness of the display is defined as “width”, and the length in the direction that becomes the edge with respect to the display surface is defined as “height”. The upper and lower limits of the width and height are not particularly specified, but if it becomes extremely large, the thickness of the display becomes large. Therefore, it is preferable that both be 40 mm or less.

  In addition, when the sheet metal is rolled up and a large external force is applied, the cross-sectional shape may be distorted and the rod shape may not be taken. In order to avoid such a situation, it may be appropriately fixed by a method such as welding, caulking, or screwing. In the case of producing from a plate, the thickness of the plate is not particularly defined, but may be appropriately determined in consideration of the size and weight of the display. In consideration of ease of processing, stability of material supply, etc., about 0.4 mm to 1.8 mm is desirable.

  In the present invention, it is very important to join the frames constituting the outer periphery. This is because if this portion is easily deformed, the effect of improving rigidity and strength due to the framework cannot be obtained. FIG. 3 is a diagram illustrating a method of joining the frames.

  In order to obtain sufficient rigidity and strength, for example, methods such as welding the frames (Fig. 3 (a)), screwing, fixing with double-sided tape or adhesive (Fig. 3 (b)) are available. Can be mentioned. Any method may be used in the present invention. If sufficient rigidity and strength can be obtained by joining by methods other than those listed here, it may be applied. Of course, multiple methods may be used in combination. In addition, a method of simply fitting as shown in (3) of the wooden frame shown in FIG. 3 (c) may be used as long as sufficient rigidity and strength can be obtained. It is enough if the skeleton has four sides so as to form a “mouth”, but in order to obtain more rigidity and strength, characters such as “day”, “eye”, “field”, or a state like a shoji are formed. As described above, a plurality of frames may be inserted in the middle to form a lattice.

  Although the rigidity of the display device can be ensured only by the above, the display element drive circuit is exposed and the design is deteriorated. In addition, there is a concern about electric shock due to contact with the exposed circuit. Therefore, in the present invention, it is preferable to cover the display device having a framework. In the present invention, any cover may be used as long as it plays the role of a cover. In particular, the above-described framework is covered with an outer shell made of a material having a high specific strength, and the outer shell and It is preferable that the frames are joined and joined at a plurality of locations or regions. As the material of the outer shell, steel is preferable for the same reason as the framework. In addition, since the outer shell is a part that can be observed from the surroundings, design properties are often required and it is necessary to paint, but various surface treatments and painting treatments can be used for steel materials, so this application is satisfied. It is also possible. In addition, since an outer shell part becomes large in area, it tends to cause an increase in weight. Therefore, the plate thickness is preferably about 0.2 mm to 1.0 mm.

  The outer shell is preferably as integral as possible. If they are separated, the effect of improving the rigidity and strength of the display may be insufficient. When it is necessary to separate for the convenience of processing, it is preferable to join the outer shells together using a screw, an adhesive, or a double-sided tape before or after combining with the framework. In addition, what is necessary is just to determine the shape of an outer shell suitably based on a processing method, designability, etc. The thickness may be determined appropriately in consideration of the target thickness of the display device. As a method for producing the outer shell, for example, a method of producing a sheet metal of a raw material by pressing such as bending, projecting or trimming can be mentioned. Of course, other methods may be used in the present invention.

  As described above, by joining the outer shell made of a material having a high specific strength and the framework, rigidity and strength can be further improved as compared with a case where the outer shell is simply composed of the framework. This effect becomes more prominent as the bonding strength is increased. FIG. 4 is a diagram illustrating an example of a method for joining the outer shell and the framework.

  After drilling a hole in the corresponding place with the framework and the corresponding outer shell, screw it (Fig. 4 (a)), or provide a frame with fixing corners (one) and there In the same manner as in FIG. 4 (a), there is a method (FIG. 4 (b)) in which screws are screwed using holes formed in corresponding locations. Of course, an adhesive or double-sided tape may be used instead of screws. In addition, when fixing using a screw, it is preferable that the frame side is threaded because it can be fixed without using a nut.

  Also, as shown in FIG. 4 (c), prepare a frame with a gap so that it can be inserted at the end of the bent end face of the outer shell and a bent portion so that the bent portion can be inserted. You may use the method of fixing by attaching an outer shell. The method shown in FIG. 4 (c) is characterized in that it does not require a screwing process and can hide the cut end face of the sheet metal forming the outer shell. Of course, a method other than the above-described method of joining the outer shell and the framework may be used.

  A display device is strongly required to have a design. If the head of the fixing screw can be seen and there is a concern about deterioration in designability, a resin cover or the like having an appearance with excellent designability may be attached separately. FIG. 5 is a diagram illustrating an example of the structure and attachment of a resin cover. In the figure, 7 is a resin cover, 8 is a fixing claw (resin cover), and 9 is a fitting hole (frame).

  The resin cover 7 surrounds and suppresses from the front surface of the skeleton 1 (FIG. 5A) and covers the front surface of the display device. The resin cover 7 may be referred to as a bezel (a part of a watch that surrounds the windshield (glass) part). A plurality of fixing claws 8 are arranged around the back surface of the resin cover 7 (FIG. 5 (b)), and a fitting hole 9 is provided in the frame 1 so as to correspond to this. The resin cover 7 and the framework 1 are fixed (FIG. 5 (d)). The resin cover 7 and the framework 1 are very easily joined, which is preferable.

  In the present invention, it is preferable that the stationary mounting jig used when the display device is placed on the floor and the wall mounting jig used when the display device is hung on the wall are attached to a frame surrounding the outer periphery. Even when an external force is applied to this, a frame with excellent rigidity and strength will share the load directly, keeping the display's rigidity and strength high, and suppressing deformation caused by the load on the display element. Can be prevented.

  Furthermore, in the present invention, it is preferable to use a material having a thermal conductivity of 10 W / (m · K) or more as a material constituting a fixing jig such as an outer shell, a framework, and a stand. By using a material having high thermal conductivity in this way, it is possible to quickly exhaust the heat generated in the display out of the system through the framework, outer shell, and fixing jig. By increasing the heat dissipation performance in this way, it is possible to prevent the temperature of the internal device from rising excessively, and to realize stable operation and long life of the device.

It is a figure which shows the example of 1 structure of the display apparatus which concerns on this invention. It is a figure which shows one structural example of the framework which makes joining with an outer shell easy. It is a figure which shows an example of the joining method of frames. It is a figure which shows an example of the joining method of an outer shell and a framework. It is a figure which shows an example of the structure and attachment of a resin cover.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame 2 Outer shell 3 Display part 4 Wall hanging jig 5 Standing jig 6 Display device 7 Resin cover 8 Fixing claw (resin cover)
9 Fitting holes (framework)

Claims (3)

A display device using a liquid crystal panel, a plasma light emitting element, an organic EL element,
A display unit including a display element and a control circuit;
A framework that is arranged so as to surround the outer periphery of the display unit, and is formed by welding a steel material having a plate thickness of 0.4 mm to 1.8 mm into a hollow shape having a height and width of 5 mm to 40 mm by welding;
Covering the framework from the back, and comprising an outer shell made of a steel material having a thickness of 0.2 mm to 1.0 mm as a single piece,
The framework further has a gap through which the outer shell can be inserted,
The outer shell has a three-fold structure, and the end of the bent end surface constitutes a check claw,
The display device, wherein the frame and the outer shell are coupled by fitting the check claw into the gap between the frames. The display device according to claim 1,
A display device, wherein a stationary jig or a wall hanging jig is attached to the frame. Display device according to 請 Motomeko 2, wherein the material of the stationary jig or wall hanging jig, a display device thermal conductivity which comprises using those 10W / (m · K) or more.

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