JP2000137440A - Image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make lowering of displaying property of a flat panel as a result of the ambient temp. possible to be prevented, by a supporting structure provided with a light weight and the satisfactorily strength. SOLUTION: This device is allowed to support the flat panel 6, through buffer material in a shape of engaging four corners of the flat panel 6, by the flat panel fixing part 2 disposed on an end part in a X shape supporting member 1 in a shape of along diagonal lines that connect four corners of the flat panel 6 (sectional plane shape is, in a state of rectangular form by making thickness direction of flat panel 6 as the long side).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus.

[0002]

2. Description of the Related Art Flat-panel image displays such as display devices using electron-emitting devices, display devices using plasma discharge, display devices using liquid crystal, etc. for applications such as image display of televisions and computers, advertising media, and signs. The device is used. As the installation method, a wall-mounting type, a wall-mounting type, a table-mounting type, a floor-mounting type, and the like are known.

FIG. 6 shows a configuration example considered as a mounting structure of a display device using plasma discharge. The main components in the figure are a front cover (bezel) 81 for protecting the display panel, and a display panel 8 using plasma discharge.
2. A flexible cable 83 for supplying an electric signal to the display panel, a chassis 84 supporting the display panel and made of sheet metal using an iron-based material, and a front cover 81 provided around the chassis 84 Mounting portion 85, a screw fixing portion 86 formed by cutting and bending the chassis 84 to fix the electric mounting board 87
Is an electric mounting board 87 for electrically converting and outputting an electric signal inputted from the outside for the display panel, and a reinforcing plate 88 for attaching the housing to an external wall mounting bracket or a stand (not shown). , A rear cover 89, a cable 90 for electrically connecting an external power supply (not shown) and a tuner (not shown) to a built-in electric mounting board.

FIG. 7 is an enlarged view of a cross section of a part of the display device. FIG. 7 shows a bit insert screw 85-a used for a front cover 81, and a front cover 81 into which the bit insert screw 85-a is inserted.
Boss 85-b is shown.

The details, function, and characteristics of this structure will be described in more detail. The panel 82 is formed by bonding two glass plates together and sealing a special rare gas into a sealed gap. An electrode film, an insulating film, a phosphor film, and a shielding film are laminated on the opposing inner surface of the glass plate. An electric signal sent from the electric mounting board 87 via the flexible cable 83 is taken into the electrode film (X, Y matrix pattern) on the inner surface of the glass plate, and a predetermined voltage is applied to the element portion for displaying an image. Then, ultraviolet rays are radiated toward the phosphor from a special rare gas in the vicinity thereof, and a light emission phenomenon occurs. A color image can be obtained by dividing the chromaticity of the phosphor into red, green, and blue for each element.

The purpose of the chassis 84 is to support the display panel 82 in the housing. The fixing method is to bond the surfaces of the chassis 84 and the display panel 82 together using a double-sided adhesive tape (not shown). Fix it. The material used is a rigid metal plate (such as a galvanized steel plate) in order to securely support the display panel 82. Further, a small hole is provided in the peripheral portion for fixing the screw to the inner boss of the front cover. Further, a screw hole 86 for fixing the electric mounting board 87 with a screw is provided on the rear side. Further, by using a plurality of small holes provided in the periphery, screws (not shown) are securely fixed to the boss portions 85-b provided on the front cover 81, whereby the front cover 81 is securely fixed.

[0007] Inside the rear cover 89, a reinforcing plate 88 for attaching the housing to an external wall mounting bracket or stand is fixed, and the external wall mounting bracket or stand is directly screwed to the reinforcing plate.

[0008]

SUMMARY OF THE INVENTION
It is an object of the present invention to reduce the weight of a support structure of a panel or to provide an image forming apparatus having a support structure capable of more reliably supporting the panel, and further having a high posture stability during use.

[0009]

In order to solve the above problems, an image forming apparatus according to the present invention accommodates a panel on which an image is displayed, a support structure for supporting the panel, and the panel and the support structure. A cover, and an installation member for installing a panel device including the panel, the support structure, and the cover, wherein the support structure sandwiches the cover between the installation member and the installation member. Attached to.

In the image forming apparatus of the present invention configured as described above, since the support structure is attached to the installation member with the cover interposed between the installation member and the support structure, the temperature is changed by the environmental temperature and the heat generated by the panel itself. Even if there is a change, unacceptable bending is hardly generated in the panel, and the panel can be reliably supported.

[0011] Further, the attachment portion where the support structure is attached to the installation member may be provided near the end of the panel device, or the attachment portion where the support structure is attached to the installation member may be the panel device. May be provided near the center or near the center of gravity.

Further, in this configuration, the support structure may have the following configuration.

[0013] A support structure for supporting a panel on which an image is displayed, comprising a holding portion for holding an end of the panel.

[0014] In this structure, even if a dimensional difference occurs between the panel and the support structure or a dimensional difference between the panel and the support structure changes by sandwiching the two opposite surfaces of the panel. It becomes possible to support the panel. For example, the panel can be held even if it is affected by expansion or contraction due to a change in heat (a change in environment temperature or a change in the heat generation state of the panel). In this case, the substantial amount of the holding portion on the surface side of the panel may be set in consideration of the degree of thermal expansion of the panel and the degree of thermal expansion of the support structure. Here, the actual hanging amount is
For example, as will be described later, when the holding portion is configured to be in contact with the panel with the cushioning material interposed therebetween, the amount of the cushioning material applied to the surface of the panel is obtained.

For example, four corners of the panel can be used as holding portions. When not only the corners of the panel but also all or a plurality of the sides of the panel are used as the holding portions, the bending of the panel can be more suitably suppressed. In this case, it is not necessary to provide the holding portions on all four sides, but it is more preferable to hold at least two opposite sides.

Further, in this configuration, a plurality of the holding portions may be provided so as to hold a plurality of portions of the panel, and the plurality of holding portions may be connected by a support member. The holding portion and the support member may be formed integrally or may be formed separately.

Further, a buffer member may be provided at a portion where the panel and the holding portion are in contact with each other or at a portion where there is a possibility of contact with the panel. For example, rubber can be used as the buffer member. In this case, the rubber hardness is preferably 50 degrees or more.

The support member is preferably made of a material other than glass, for example, a metal.

Further, the weight of the supporting member can be reduced by using a rod-shaped member. Here, the rod-shaped member includes an elongated plate-shaped member. Further, as the supporting member, a rod-shaped member and a planar member can be used in combination. It is preferable to use a rod-shaped member whose longitudinal direction is longer than the longitudinal side of the panel. Further, a plurality of rod-shaped members may be provided. Further, rod-shaped members may be provided to cross each other. For example, it may be provided in an X shape. When the bar-shaped members are provided to intersect, it is preferable that the intersecting members are fixed at the intersections. When a support member having an intersection is provided, the support member may be formed integrally or may be formed by intersecting separate support members. Further, the rod-shaped member may have a square cross section or a circular cross section, but the length of the cross section in the thickness direction of the panel is longer than the length in the direction parallel to the panel surface. It is suitable. on the other hand,
If it is desired to make the support structure thinner, the reverse may be true.

In the former case, the length of the bar-shaped member in the thickness direction of the panel is 1/8 of the diagonal of the panel.
It is preferably 0 or more.

Further, since the heat conduction of the panel is different between the place where the support member is in contact with the panel and the place where the support member is not in contact,
When the difference in heat conduction is a problem, in the present support structure, the panel is brought into contact only with the holding portion (holding portion) (the supporting member does not come into contact with the panel), or a part of the supporting member is provided. And the holding portion (holding portion) may be in contact with the panel. Further, a heat insulating material or a cushioning material for protection may be provided between the panel and the support member.

The present application includes the following inventions.

A support structure for supporting a panel on which an image is displayed, comprising a support member having a bar-shaped member made of a material different from that of the panel, wherein the length of the bar-shaped member in the longitudinal direction is: A support structure characterized by being longer than a length of a side in a longitudinal direction of the panel.

In this support structure, various configurations can be adopted for holding the panel, including the configuration of the holding portion. In the same manner as described above, it is possible to hold a corner portion or a side.

Here, as the material of the support member, for example, when the panel is made of glass, metal can be used. Further, a plurality of rod-shaped members may be provided.
Further, rod-shaped members may be provided to cross each other. For example,
It may be provided in an X shape. When the bar-shaped members are provided to intersect, it is preferable that the intersecting members are fixed at the intersections. Also, when providing a support member having an intersection,
It may be formed integrally or may be formed by intersecting separate support members.

The rod-shaped member may have a square cross section or a circular cross section, and the length of the cross section in the thickness direction of the panel may be in the direction parallel to the panel surface. Preferably, it is longer than the length. On the other hand, if it is desired to make the support structure thinner, the reverse may be applied.

In the former case, the length of the bar-shaped member in the thickness direction of the panel (particularly when the member is provided along the diagonal of the panel) is 1/8 of the diagonal of the panel.
It is preferably 0 or more.

Further, since the heat conduction of the panel is different between the place where the support member is in contact with the panel and the place where the support member is not in contact,
When the difference in heat conduction is a problem, the present support structure is configured to make contact with the panel only by the panel holding portion such as the above-described holding portion (the support member does not contact the panel), or It is good to make a part of and a holding part contact a panel. Further, a heat insulating material or a cushioning material for protection may be provided between the panel and the support member.

In each of the above-mentioned inventions, the following may be performed.

In the support structure of the present invention, the support structure may be an electric ground. For example, a part of the support structure may be provided with a fixing portion for fixing the panel and a cover for accommodating at least a part of the panel support structure, but the cover is subjected to a conductive film treatment by plating or painting on the inner surface. When the cover is provided with conductivity, the cover and the support structure may be electrically connected to each other at the fixing portion so that the cover can be grounded.

A mounting portion for mounting a circuit for controlling or driving the panel (a substrate including the circuit) may be provided in a part of the support structure. The ground level wiring (ground level wiring pattern) of the circuit and the support structure may be connected via the mounting portion.

Further, if the contact between the support structure and the cover is made between flat surfaces, the reliability of the electrical connection is increased. Also, screws can be used as a means for mechanically fixing the support structure and the cover. In addition, by making the contact between the support structure and the circuit in a plane, the reliability of the electrical connection is increased. Here too, screws can be used as a means for mechanically fixing the support structure and the circuit.

In some cases, an installation member such as a stand or a hanging member is used to install a panel device including a panel and a support structure. However, if the support structure is provided with an attachment portion to the installation member. It is suitable. The mounting part is
When the panel device is provided near the end of the panel device, the panel device can be installed more stably. In addition, if the mounting portion is provided near the center of the panel device or near the center of gravity, the posture and angle of the panel device can be easily adjusted, and the screen is also protected against external vibration. It becomes difficult to shake.

That is, the present application includes the invention having the following configuration.

[0035] A support structure for supporting a panel on which an image is displayed, wherein the support structure has a mounting portion for mounting a panel device including the panel and the support structure.

A support structure for supporting a panel on which an image is displayed, wherein at least a part of the support structure has conductivity and is connected to a ground.

Further, the present invention includes an invention of a panel device including the above-described support structure and the panel.

The present application also includes an invention of an image forming apparatus using the panel device.

At least one of the following problems which cannot be solved by the configuration shown in FIG. 6 can be solved by any of the inventions according to the present application.

1. Since the chassis 84 supporting the display panel 82 in the housing is usually made of iron-based sheet metal, the weight of the entire flat-panel image display device increases, making it difficult to carry or reinforcing the wall mounting bracket or the wall itself. Is needed.

2. Since the display panel 82 and the chassis 84 are made of different materials, the dimensional difference between the two components increases as the environmental temperature changes, and there is a risk that the display panel 82 will be deformed and display performance will be degraded.

3. Display panel 82 and electrical mounting board 87
The front cover 81 and the rear cover 89 need to be subjected to a conductive film treatment in order to suppress electromagnetic radiation noise generated from the front cover 81, and furthermore, they need to be electrically connected to GND. When the bit insert screw 85-a is inserted into the boss 85-b by heating, the resin melts and swells in the plane portion of the boss 85-b, and the surface contact with the screw portion of the chassis 85 becomes unstable,
There is a danger of leakage of electromagnetic radiation noise.

4. When the flat panel display is installed on an external wall mount or stand, the reinforcing plate 88 supports the heavy display panel 82 and the chassis 84 via the rear cover and the front cover. When the user changes the direction of the display image, the posture becomes unstable or the display screen shakes due to slight vibration, which is difficult to handle.

5. Since the heat generated from the display panel 82 is directly transmitted to the chassis 84 and thermally affects the electric mounting board 87, and conversely, the heat generated from the electric mounting board 87 thermally affects the display panel 82 through the chassis 84, It is feared that the display performance of the display panel 82 is degraded and the electrical characteristics of the electrical mounting board 87 are adversely affected.

6 Since the power supply and the tuner are not built in, if the flat panel display is hung on a wall, another installation space is required, and the cable 90 needs to be routed between the power supply and the tuner. For this reason, when using this flat-panel image display device, there are restrictions on the installation location.

7. Since the display panel 82 and the chassis 84 are bonded together using a double-sided tape, it is difficult to separate and recycle the material when discarding the product.

[0047]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail with reference to embodiments.

[First Embodiment] FIG. 1 is a block diagram showing a first embodiment of the present invention. This embodiment has a structure in which a flat panel is supported by an X-shaped X-shaped support member 1. In this embodiment, the main components are an X-shaped support member 1 made of a rigid member and having an X-shape, and a flat panel fixing portion which is a holding portion for holding a panel provided at an end of the X-shaped support member 1. 2, a cover fixing portion 3 provided at an end of the X-shaped support member 1, a mounting portion 4 provided on the X-shaped support member 1 for mounting an electric mounting board 8 and formed with a screw, an X-shaped support member A mounting portion 5 provided on the X-shaped support member 1 and having a screw formed thereon for mounting 1 on the product fixing supplement Z strong plate 9, a flat panel 6 on which a pair of glass plates provided with electrical wiring are bonded, A flexible board 7 for supplying an electric signal and voltage to be displayed to a flat panel, an electric mounting board 8 for converting an external signal into an image display signal for the flat panel, and a product for desktop use. Product fixing reinforcing plate 9 for fixing to a pendant or wall hanging (not shown), a rear cover 10 provided with an opening for heat dissipation to protect and maintain the appearance of the product, and to protect and appearance the product. And a front cover 11 provided with an opening corresponding to the display screen, and for electrically connecting an external signal source such as a tuner (not detailed) or a power supply (not detailed) to the electric mounting board 8. The input cable 12. In the present embodiment, the fixing portion 2, the cushioning material 13, and the support member 1 cooperate to sandwich the panel.

FIG. 2A is an enlarged vertical cross-sectional view of the end of the X-shaped support member, and FIG. 2B is a plan view corresponding to the vertical cross-section viewed from the back of the image display device. I have. 1 are given the same reference numerals. As shown in FIG. 2A, cushioning members 13 are arranged near corners of the flat panel 6 and are sandwiched inside the flat panel fixing portion 2. As shown in FIG. 2B, the small screw 14 fixes the X-shaped support member 1 and the cover fixing portion 3, and the small screw 15
Secures the rear cover 10 to the cover fixing portion 3.

The details, functions, and characteristics of this structure will be described in more detail. Since the X-shaped support member 1 is along a diagonal line connecting the corners of the flat panel 6, two bars intersect in the vicinity of the center of the flat panel 6. And
The flat panel 6 is mechanically fixed at four ends. Also, since the four corners of the rear cover 10 are mechanically fixed, the X-shaped support member 1 has sufficient strength against external loads in the X and Y directions, despite its small weight.

The cross section of the two bars of the X-shaped support member 1 is a rectangle having a long side in the Z direction in FIG.
Is designed so as to satisfy the following equation.

E ≧ diagonal length of flat panel 6 × 1/80 As a result, although the weight of the X-shaped support member 1 is small,
It has sufficient strength against external loads in the Z direction. In this embodiment, aluminum is used to reduce the weight of the material. However, if the product is to be made thinner, iron or stainless steel can be used and the long side dimension e can be set small.
The long side dimension e is sufficient in strength if it satisfies the above equation, but if it is too large, the product becomes thicker, so that it is usually in a range that satisfies the following equation.

E ≦ the length of the diagonal line of the flat panel 6 × 1/20 Also, the mounting portion 4 of the electric mounting board 8 provided on the X-shaped support member 1 makes contact with the electric mounting board 8 on a relatively wide plane. By providing a portion and forming a female screw on the plane portion, the electric mounting substrate 8 can be securely fixed with a commercially available small screw. Furthermore, GND (ground) on the electric mounting board 8
By arranging the wiring pattern (not shown) so as to be in contact with the X-shaped support member 1, the X-shaped support member 1 can be electrically treated as a GND line. Furthermore, X
The support member 1 has four ends at the four ends of the rear cover 10.
Since it is fixed with two corners and small screws 15, the rear cover with an electromagnetic wave shield (described later) is also electrically connected to GND.
Connected to

Further, the X-shaped support member 1 is fixed to the product fixing reinforcing plate 9 using small screws by the mounting portion 5 to the product fixing reinforcing plate 9 provided near the center thereof, so that the product fixing reinforcement is provided. The plate 9 is also electrically connected to GND.
Therefore, a table-top stand or a wall-mounting hanger for installing the flat panel display product can also be electrically used as GND.

As shown in the cross-sectional view of FIG. 2 (a), the flat panel fixing portion 2 has an L-shaped structure that hangs around the four corners of the flat panel near the front surface. In this embodiment, the cushioning material 13 is sandwiched between the L-shaped structure and the end of the X-shaped support member 1. The cushioning material has a key shape in which the shape when viewed from the back side and the front side of the flat panel is bent at a right angle, and has a U-shaped cross section so as to enclose the four corners of the flat panel as shown in FIG. Mates with the corners of the flat panel. Then, as shown in FIG. 2A, it can be removed together with the flat panel 6 by using small screws 14.

[0056] The depth f of the grooves (lateral grooves depth and f ₂ a longitudinal groove depth and f ₁₎ for fitting shown in FIG. 2 (a), and FIG. 2 ( b) the thickness c (lateral direction) and d of the cushioning material 13 at the back of the groove for fitting shown in FIG.
(Vertical direction) is dimensioned so as to satisfy the following equation.

[0057] (coefficient of linear expansion -X-shaped support member 1 of a flat panel 6) × 40 [deg] × lateral dimension of the flat panel 6 [mm] × 1/2 <f 1 and c and (Flat The linear expansion coefficient of the panel 6−the linear expansion coefficient of the X-shaped support member 1) × 40 [deg] × the vertical dimension of the flat panel 6 [mm] × 1/2 <f ₂ and d With these set dimensions, product distribution In addition, it can sufficiently adapt to temperature changes during use by the user and can reliably support the flat panel 6.

As a material of the cushioning material, a material having good insulating properties is preferable in order to electrically insulate the flat panel 6 and the X-shaped support member 1 from each other. Rubber can be used, and the rubber hardness can be selected depending on the weight of the flat panel 6. However, it is preferable to select 50 degrees or more in consideration of a change with time. If it is too hard, the flat panel 6 may be stressed.

The cover fixing portion 3 is provided so as to be in contact with the rear cover in a wide plane, and has a structure in which screws are tightened.
As described above, the X-shaped support member 1 is fixed to the small screws 14 and the small screws 15 for attaching the rear cover are provided. Due to the drawn bent shape as shown in the figure, even an aluminum plate material has sufficient strength.

The flat panel that can be used in the present invention is not particularly limited as long as it is a thin image display device.
A flat panel of 1.5 cm or less, particularly 1 cm or less, is preferred. In particular, a self-luminous type flat panel is preferable, for example, a flat panel display having a surface conduction electron-emitting device, a flat panel display having a plasma discharge element,
A flat-panel image display device having an organic thin-film EL element can be used.

The present invention is particularly suitable for fixing a large-sized flat panel. For example, the effect of the present invention can be exhibited most when used for a flat panel of about 30 to 60 inches.

In this embodiment, a flat-panel image display device having a surface conduction electron-emitting device is used as the flat panel 6.

The flat-panel image display device provided with the surface conduction electron-emitting device has a structure in which a windshield and a rear glass facing the windshield are bonded together with a spacer interposed therebetween, and the periphery is adhered to keep the inside vacuum. It is. On the inner surface of the windshield, a phosphor film that displays images by light emission and a black stripe film that improves contrast are formed.
A metal back film as an electrode is formed thereon. On the other hand, on the outer surface, to prevent the glass from scattering,
A resin film is laminated with an adhesive, and a conductive film for preventing electrification and a low reflection film for improving contrast are formed on the surface of the resin film. On the inner surface of the rear glass, an electron-emitting device is formed at a position facing the phosphor film on the windshield.

This electron-emitting device is formed as follows. First, a + electrode for electron emission and-
The electrodes are formed of a conductive film so as to face each other at intervals of several tens [μm]. Then, an X-direction wiring for guiding an electric signal from the outside of the flat panel to the + electrode is formed by a printing method. An interlayer insulating layer for electrically insulating the directional wiring and the X-directional wiring is formed at the intersection of the Y-directional wiring and the X-directional wiring on the X-directional wiring. Thereafter, a Y-direction wiring for guiding an electric signal from outside the flat panel to the negative electrode is formed by a printing method. Further, a conductive thin film composed of fine particles connecting the + electrode and the − electrode is formed, and a potential is applied between the + electrode and the − electrode to form an electron emission portion on a part of the conductive thin film.

The operation of the electron-emitting device is as follows.
Is applied between the X-direction wiring and the Y-direction wiring selected from the outside to emit electrons from the electron-emitting device, and the number [kv] of the number [kv] applied to the metal back film on the inner surface of the windshield is increased. The electrons are accelerated by the potential and collide with the phosphor film to emit light.

The flexible board 7 is connected to the X-direction wiring and the Y-direction wiring at the outer periphery of the flat panel by an anisotropic conductive film, and the other is connected to the electric mounting board 8 via a connector. In the middle of the flexible board 7,
A ferrite core (not shown) for preventing electromagnetic radiation noise is attached so as to surround the flexible board.

The electric mounting board 8 processes an external signal and outputs a signal for driving the flat panel. For example, a synchronization signal from a tuner is separated and a modulation signal is output via a shift register and a line memory. Further, it outputs a scanning signal via a control circuit. By outputting these signals to the Y-direction wiring and the X-direction wiring of the flat panel 6 via the flexible board 7, the electron-emitting devices of the flat panel 6 are operated to display moving images.

The protruding portion of the product fixing reinforcing plate 9 penetrates the gap of the electric mounting board 8 and is firmly attached to the mounting portion 5 provided on the flat panel support member 1 with a screw (not shown). And a screw (not shown) for fixing to a tabletop stand or a wall hanging device (not shown) on the rear side of the housing. Flat panel products installed on stands and hanging devices are often tilted left and right or up and down as their usage,
Since the X-shaped support member 1 has a shape in which two bars along the diagonal line of the flat panel 6 intersect, the product fixing reinforcing plate 9
Is located substantially at the center of the center of gravity of the image display device, and its posture is stable in all the above-mentioned use situations.

For the rear cover 10 and the front cover 11, a molded resin such as ABS or polycarbonate can be used. Usually, metal plating (copper or nickel) is applied to the entire inner surface to prevent electromagnetic radiation noise. A conductive paint (containing copper or nickel particles) may be applied instead of metal plating.

The input cable 12 is electrically connected to, for example, an external tuner and a power supply (not shown) to receive signals and the like from the outside, and is provided through the rear cover. A ferrite core (not shown) for preventing electromagnetic radiation noise is attached to the signal line from the tuner so as to surround the signal line. The power supply line has a high withstand voltage specification.

As described above, according to the present embodiment, the X-shaped support member 1 is configured to support all the components of the product, thereby increasing the strength of the entire product and greatly improving the shape effect of the X-shaped support member 1. It is possible to achieve a great reduction in weight. Furthermore, since the expansion and contraction of the flat panel 6 can be adapted to a change in environmental temperature, reliability is improved. Further, since the covers are grounded via the X-shaped support member 1, the electromagnetic shielding effect is high. In addition, since the product can be fixed to a tabletop stand or a wall hanging device near the center of gravity of the product, the product has both stability during use and easy handling.

Further, when the product of this embodiment is discarded,
By removing the screws, resin covers, mounting boards, glass flat panels, and metal support members can be easily disassembled.

[Second Embodiment] FIG. 3 is a block diagram showing a second embodiment of the present invention. Portions common to the first embodiment are denoted by the same reference numerals. This embodiment has a structure in which a flat panel is supported by an X-shaped support member and a thin plate. That is, the flat panel support member 51 made of a rigid member is formed by a thin plate and an X-shaped rib (X-shaped support member) integrated with the thin plate by welding or screws. A flat panel fixing portion 52 for fixing four corners of the flat panel is provided at an end of the flat panel support member, and a cover fixing portion 53 is provided at an end of the flat panel support member. Further, a side center fixing portion 54 for fixing the center of the four sides of the flat panel.
The mounting portion 55 for mounting the product fixing reinforcing plate 9 is formed with a screw. The mounting portion 56 for mounting the electric mounting board 8 is formed with a screw.

FIG. 4 is an enlarged longitudinal sectional view of the vicinity of the side center fixing portion 54 of the flat panel 4. A cushioning material 57 made of an elastic material is provided in a shape sandwiching the flat panel 6. A side center fixing portion 54 holds the cushioning material 57, and is fixed to the flat panel support member 51 by small screws 58. Further, a sheet-like heat insulating material 59 is provided in a gap between the thin plate portions of the flat panel 6 and the flat panel support member 51, and the positioning thereof is performed by cutting and bending the thin plate portion of the flat panel support member 51. Done.

The details, functions, and characteristics of this structure will be described in more detail. The members not specifically mentioned here are the first members.
It can be configured in the same manner as the embodiment.

Since the ribs of the flat panel support member 51 are fixed to the thin plate along the diagonal line connecting the corners of the flat panel 6, two ribs intersect in the vicinity of the center of the flat panel 6. As in the first embodiment, the flat panel 6 is fixed with small screws via cushioning materials by flat panel fixing portions 52 provided at four corners of the flat panel support member 51, and similarly, at four positions. Are fixed to the four corners of the rear cover 10 with small screws using cover fixing portions 53 provided at the corners of. With such a structure, similarly to the first embodiment, the flat panel support member 51 has sufficient strength against external loads in the X and Y directions despite its small weight.

The cross section of the two ribs of the flat panel support member 51 is rectangular, and its long side dimension e is designed to satisfy the following equation.

E ≧ the length of the diagonal line of the flat panel 6 × 1/160 As a result, the flat panel supporting member 1 has sufficient strength against an external load in the Z direction despite the small weight of the flat panel supporting member 1.

In the present embodiment, aluminum is used for both the thin plate and the rib in order to reduce the weight of the material of the flat panel support member 1. However, if a thinner product is intended, iron or stainless steel is used. Thus, the dimension e may be reduced.

In this embodiment, in particular, the flat panel 6
Is fixed by the side center fixing portion 54, for example, in the case of a large flat panel having a diagonal of 30 inches or more, or in the case of a lightweight flat panel in which the thickness of the glass constituting the panel is reduced. The deflection of the glass plate can be suppressed. In the present embodiment, the thickness of one piece of glass constituting the flat panel is 2.8 mm, but this embodiment is also used when the weight is reduced by using a thinner glass plate having a thickness of 2 mm or less. This has the effect of suppressing the deflection of the glass.

In this embodiment, the flat panel 6
Since the thin plate portion of the flat panel support member 51 is disposed at a position facing the flat panel support member 51, a sheet-like heat insulating material 59 is provided in consideration of the temperature distribution inside the product in the gap between them, or the flat panel 6 is protected. A sheet-like protective cushioning material (not shown) can be arranged.

As described above, according to the present embodiment, the flat panel supporting member 51 has an integrated structure of an X-shaped rib and a thin plate, so that it is possible to cope with a case where the flat panel 6 is made larger or lighter. .

Further, a heat insulating material for blocking thermal interference caused by the heat generated by the flat panel 6 and the heat generated by the electric mounting board 8.
Alternatively, it is possible to arrange a protective cushioning material for protecting the flat panel 6, and it is possible to improve the display performance of the present image display device and ease the use environment conditions.

The flat panel 6 and the electric mounting board 8
Since the thin plate portion of the flat panel support member 51 of the electrical GND is disposed between the two, the effect of preventing radiation noise is improved. Therefore, for example, metal plating (electromagnetic wave shield) does not need to be provided inside the rear cover, so that the cost can be significantly reduced.

[Third Embodiment] FIG. 5 is a block diagram showing a third embodiment of the present invention. Portions common to the first embodiment are denoted by the same reference numerals. This embodiment has a structure in which a signal source can be housed inside a housing, and a structure in which a flat panel and a signal source are supported by an X-shaped support member. The X-shaped support member 31 is formed of a rigid member and has an X-shape. A flat panel fixing portion 32 is provided at an end of the X-shaped support member, and a signal source unit (at a further end of the X-shaped support member). A signal source unit fixing portion 43 for fixing the signal source unit (described later) is provided. Also,
A cover fixing portion 33 is further provided at an end of the signal source unit fixing portion.
Is provided. A signal source unit 42 with a built-in tuner for outputting electric and information signals to the electric mounting board is disposed immediately below the electric mounting board 8, which is composed of an external AC and various signal input units, a DC and various signal outputs. It has a part. A storage section for the signal source unit 42 is provided below the rear cover 40. Front cover 41
Includes an opening adapted to a display screen and a substrate (not shown) for adjusting display quality.

The details, functions, and characteristics of this structure will be described in more detail. The members not specifically mentioned here are the first members.
It can be configured in the same manner as the embodiment.

Since the X-shaped support member 31 extends along a diagonal line connecting the upper two corners of the flat panel 6 and the two corners of the lower signal source unit fixing portion so as to intersect with each other, the X-shaped support member 31 is just connected to the flat panel 6 and the signal source. Two bars intersect near the center where the units 42 are arranged vertically. Then, similarly to the first embodiment, the flat panel 6 is fixed with small screws via cushioning materials at the fixing portions 32 provided at the four ends, and similarly provided at the four ends. The rear cover 40 is fixed to the four corners of the rear cover 40 with small screws. Further, the signal source unit 42 is mechanically fixed to the signal source unit 42 at signal source unit fixing portions 43 at the lower two corners of the X-shaped support member 31. With such a structure, although the weight of the X-shaped support member 31 is small, it has sufficient strength against external loads in the X and Y directions.

The material of the X-shaped support member 31 and the cross-sectional shape of the two rods are the same as in the first embodiment, and the connection relationship with the electric peripheral members is also the same.

The signal source unit 42 is arranged below the product as shown. Signal source unit 4 that generates a large amount of heat
By arranging 2 at the bottom, the internal temperature of the entire product can be made uniform by convection of air. The signal source unit 42 has a sufficient mechanical strength in a structure in which the signal source substrate and the tuner substrate are housed in a metal case via an insulating material.

As described above, according to the present embodiment, by integrating the signal source unit 42 inside the image display device, space saving can be achieved when using the product, and further, the X-shaped support member can be used. The structure for supporting all the component parts of the product at 31 increases the strength of the whole product, and can significantly reduce the weight by the shape effect.
In addition, since the product can be fixed to a tabletop stand or a wall hanging device near the center of gravity of the product, the product has both stability during use and easy handling.

[Fourth Embodiment] FIG. 8 is a plan view showing the fourth embodiment of the present invention, viewed best from the back side of a panel. The description of the common parts with the first embodiment is omitted. In the figure, reference numeral 91 denotes a flat panel support member.
It is made of a rigid member and has a shape in which two X characters are vertically arranged. 9
Reference numeral 2 denotes a flat panel fixing portion provided at an end of the flat panel support member 91, and 93 denotes an electric mounting substrate. In this embodiment, six substrates having different shapes are arranged.
Reference numeral 94 denotes a flat panel, and reference numeral 95 denotes a mounting portion of a product fixing reinforcing plate (not shown) provided on the left and right of the flat panel support member 91, and is formed with a screw. Reference numeral 96 denotes a screw for directly fixing the electric mounting board 93 to the flat panel supporting member 91, which is similarly arranged on each electric mounting board at a position in contact with the flat panel supporting member 91.

Next, the functions and features of the structure in the above configuration will be described step by step.

Since the flat panel support member 91 is along a diagonal line connecting the four vertices of the flat panel 94 and the two centers of the short sides so as to intersect each other, it has a shape obtained by combining triangles and rhombuses. . The length of each bar is longer than the long side dimension of the flat panel.

Then, the flat panel 9 is formed at the four ends.
Since the flat panel support member 91 is fixed with the small screw 4, the flat panel support member 91 has sufficient strength against an external load in the X and Y directions for a small mass. The material of the flat panel support member 91 and the cross-sectional shape of the four rods are the same as in the first embodiment, and have sufficient strength against an external load in the Z direction. Further, the rigidity of the material is reduced and the weight is reduced by the shape effect of the flat panel supporting member 91 extending to the tip. For example, a resin molded product may be used. Also,
Although the electric mounting board 93 of the present embodiment is divided into six parts as shown in the figure, the fixing is completely fixed to the flat panel supporting member 91 by fixing screws 96. Therefore, by wiring the GND wiring of the electric mounting board 93 to the fixed screw contact portion as in the first embodiment,
The electrical connection with the peripheral members is also maintained.

The mounting portions 95 of the product fixing reinforcing plate are arranged on the left and right sides of the flat panel support member 91, and the height thereof substantially coincides with the panel center line. Therefore, when a stand or a wall fixing bracket is attached to the product to install the product, the center of gravity of the panel is evenly supported.

As described above, according to the present embodiment, it is possible to directly fix a large number of electric mounting boards to the panel supporting member, thereby increasing the reliability of electric connection, and improving the flat panel and control circuit. It has the effect of reliably shielding electromagnetic radiation noise from the board. Further, the flat panel supporting member has a structure for supporting all the constituent parts of the product, so that the strength of the entire product can be increased, and the shape effect can significantly reduce the weight. In addition, since a table stand or a hanging device for wall hanging can be directly fixed to the flat panel support member, the product has both stability and ease of handling when using the product.

Although the application examples of the present invention according to the present application have been described with reference to the embodiments, the present invention can be applied in various ways. For example, in the second embodiment, as the support member, a combination of a rod-shaped member and a planar member is used, and the fixing portion, which is a portion for holding the panel, is formed of four.
It is arranged at a corner, and further, in the planar member, the vicinity of the center of each side of the panel is held. For example, a plurality of holding portions that hold each side are provided along two opposing sides of the panel. It is also possible to adopt a configuration in which the holding portions are connected only by rod-shaped members.

[0098]

As described above, according to the present invention, by adopting a configuration in which the panel is sandwiched, even if there is a change in the environmental temperature or a temperature change due to the heat generated by the flat panel itself, the flat panel can tolerate. Undesirable deflection is hardly generated, and the support can be surely performed.

By providing the mounting portion near the end of the panel device, near the center, or near the center of gravity, the center of gravity of the panel can be evenly supported, and the posture stability of the image forming apparatus during use is enhanced. .

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a first embodiment of the present invention.

FIG. 2 is an enlarged view of an end of the X-shaped support member according to the first embodiment.

FIG. 3 is a configuration diagram showing a second embodiment of the present invention.

FIG. 4 is an enlarged longitudinal sectional view of a part of a side center fixing portion 54 of four sides of a flat panel according to a second embodiment.

FIG. 5 is a configuration diagram showing a third embodiment of the present invention.

FIG. 6 is a diagram showing an example of a conventional flat panel housing.

FIG. 7 is an enlarged longitudinal sectional view of an end of a flat panel support member of a conventional flat panel housing.

FIG. 8 is a configuration diagram showing a fourth embodiment of the present invention.

[Explanation of symbols]

 1, 31 X-shaped support member 2, 32, 52 Flat panel fixing part 3, 33, 53 Cover fixing part 4, 56 Mounting part for electrical mounting board 5, 55 Mounting part for product fixing reinforcing plate 6 Flat panel 7 Flexible board 8 Electrical mounting board 9 Product fixing reinforcing plate 10, 40 Rear cover 11, 41 Front cover 12 Input cable 13, 57 Buffer material 14, 15, 58 Machine screw 42 Signal source unit 43 Signal source unit fixing part 51 Flat panel support member 54 Center of side Fixing part 59 Sheet heat insulating material

Claims (3)

[Claims] 1. A panel on which an image is displayed, a support structure that supports the panel, a cover that houses the panel and the support structure, and a panel device that includes the panel, the support structure, and the cover are installed. An image forming apparatus, wherein the support structure is attached to the installation member with the cover interposed between the installation structure and the installation member. 2. The image forming apparatus according to claim 1, wherein an attachment portion for attaching the support structure to the installation member is provided near an end of the panel device. 3. The image forming apparatus according to claim 1, wherein the attachment portion to which the support structure is attached to the installation member is provided near a center or a center of gravity of the panel device.