JP2002123178A - Video display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a video display device having a display panel supported by a frame chassis, especially a video display device such as a plasma display panel device. SOLUTION: The video display device 10 has a structure constituted of a plate-shaped display panel 1, a heat conduction member 2 and the frame chassis 3 which are successively superposed. The frame chassis consists of plural metal- made formed members 3a and 3b which are combined and in an another case the frame chassis consists of a sheet metal member 30a and a framework member 30b which are combined.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate display panel which can be used as, for example, a plasma display panel device (hereinafter, referred to as a PDP device) or a liquid crystal display device. The present invention relates to a video display device to be supported.

[0002]

2. Description of the Related Art Recently developed PDP devices have the feature of being thin and having a large screen.
It is expected to be applied to wall-mounted televisions and the like that will replace T). This PDP device includes a structure formed by sequentially stacking a plate-shaped display panel, a heat conductive member, and a frame chassis, and an electric circuit board attached to a back surface of the frame chassis. Since this PDP device can display an image on a thin plate-shaped display panel, a thin structure can be realized without the need for an electron gun or the like unlike a conventional CRT.

In this PDP device, the thickness of a display panel for displaying images can be substantially the same as that of a small screen regardless of the size of the screen even when the screen is large. For this reason, it is relatively easy to increase the screen size of a PDP device as compared with a CRT that requires extra depth as the screen size increases. On the other hand, since the display panel is usually formed by bonding glass substrates, the display panel is easily damaged as the screen becomes larger. Therefore, in order to support the display panel, a frame chassis made of aluminum die-casting which is lightweight but has a certain strength is often used. However, if the display panel is directly supported by the frame chassis, the display panel may be damaged. Therefore, the display panel is usually supported via a heat conductive member having predetermined elasticity, predetermined heat conductivity, and high heat resistance temperature, for example, silicone rubber.

The display panel, the heat conducting member, and the frame chassis have a rectangular shape with substantially the same dimensions, and are sequentially stacked to form a structure. An electric circuit board for displaying an image on a display panel is attached to the back of the frame chassis of the structure to constitute a PDP device. This PDP device is usually housed in a housing with six points added to the four corners or the midpoint of the longer side.

[0005]

However, conventional PDPs
The device has several problems as follows. (1) It is difficult to produce a metal frame chassis of a certain size or more. The metal frame chassis is usually made of aluminum die casting. This aluminum die-casting can be processed to a certain size (for example, a size of 42 to 50 inches). However, a frame chassis larger than a certain size, for example, 50 inches (127 cm (50i)
nch)) and above require too much molding pressure. For this reason, it is difficult to manufacture a molding machine that can cope with an excessive molding pressure, and it is difficult to produce a metal frame chassis having a size equal to or larger than a certain size. In addition, it is difficult to produce a metal frame chassis having a size equal to or larger than a certain size in substantially the same manner in the case of using other molding methods, not limited to die casting.

(2) Die-cast frame chassis have insufficient heat radiation characteristics. The thermal conductivity of the aluminum die casting generally used for the frame chassis is smaller than the thermal conductivity of the rolled aluminum member. For example, the heat conductivity of an extruded aluminum member or a rolled aluminum member is 220 W / (K · m), whereas the heat conductivity of aluminum die casting is as small as 96 W / (K · m). That is, the heat radiation characteristic of the aluminum die casting is only about 44% of the heat radiation characteristic of the aluminum rolled member or the like. This is because even with the same aluminum material, aluminum die casting is considered to have a lower thermal conductivity due to differences in crystal size and density as compared to aluminum extruded members and aluminum rolled members. For this reason, when aluminum die casting is used for the frame chassis, there is a case where the heat radiation characteristic of radiating the heat transmitted from the display panel via the heat conducting member from the back surface is not sufficient. Even when a material other than aluminum is used, a die-casting frame generally has insufficient heat radiation characteristics as in the case of using aluminum.

(3) It is difficult to maintain the display panel, and it is difficult to recycle and reuse the frame chassis. Silicone rubber, which is often used as a heat conducting member, strongly holds the display panel and the frame chassis with excellent adhesive strength. However, it may be difficult to separate the display panel and the frame chassis from the heat conducting member due to the adhesive force of the silicone rubber. This not only makes maintenance work such as replacement of display panels difficult, but also
It is also difficult to recycle and reuse the frame chassis.

(4) Cracks may be generated by heat accumulated in the display panel. Although the heat generated from the display panel is radiated from the frame chassis through the heat conducting member, cracks due to the heat of the display panel are most likely to be generated starting from the peripheral edge portion. This is considered to be because the temperature difference between the peripheral portion and the central portion is particularly large. In addition, the possibility of crack generation due to heat of the display panel is increasing due to the enlargement of the screen.

Accordingly, a first object of the present invention is to provide a frame chassis for a video display device having a large screen exceeding 50 inches. A second object is to improve the heat radiation characteristics of the frame chassis. A third object is to improve the maintenance work efficiency of the display panel and the recyclability and reusability of the frame chassis. A fourth object is to reduce the temperature difference between the peripheral part and the central part of the display panel to suppress the occurrence of cracks in the display panel.

[0010]

The above object can be attained by the present invention described below. That is, the image display device according to the first invention of the present application is an image display device having a structure formed by sequentially stacking a plate-shaped display panel, a heat conductive member, and a frame chassis, wherein the frame chassis Is characterized by combining a plurality of metal forming members.

Here, the display panel is formed, for example, by bonding a glass substrate. In the case of a plasma display device, the display panel includes an electrode, a phosphor, and the like. In the case of a liquid crystal display, a liquid crystal, electrodes, and the like are provided. The heat conductive member is made of a material having a predetermined elasticity and a predetermined heat conductivity, for example, a heat conductivity of 0.1 W / (m · K) or more. Specifically, silicon rubber or the like can be used.

Here, the metal molded member constituting the frame chassis can be manufactured by other molding methods other than the casting method, the forging method, the injection molding method and the like. As the casting method, for example, a method by die casting is preferable. Further, as a material of the metal molded member, aluminum, magnesium, an aluminum alloy, a magnesium alloy, or the like can be used.

[0013] Further, an image display device according to a second invention of the present application is the image display device, wherein the molding member is formed by die casting.

According to a third aspect of the present invention, there is provided an image display apparatus having a structure in which a plate-shaped display panel, a heat conductive member, and a frame chassis are sequentially stacked. The chassis is characterized by combining a frame member and a sheet metal member.

Here, the frame member is formed by a casting method, a forging method,
It can be manufactured by other molding methods, such as injection molding. As the casting method, die casting is preferred. Further, as a material of the frame member, aluminum, magnesium, an aluminum alloy, a magnesium alloy, or the like can be used. On the other hand, the sheet metal member can be manufactured by extrusion, rolling, or the like. The material of the sheet metal member is
Aluminum, magnesium, aluminum alloy, magnesium alloy and the like can be used. Further, the combination of the frame member and the sheet metal member can be combined by various methods. For example, the frame member and the sheet metal member may be fastened and fixed with a fastening member such as a screw, a bolt, a nut, or the like, and the frame member and the sheet metal member may be provided with an uneven portion that engages with each other without using a fastening member. May be combined. Further, the skeleton member and the sheet metal member may be provided with concave and convex portions that engage with each other, combined with each other, and fastened and fixed using a fastening member.

The image display device according to a fourth aspect of the present invention is the image display device, wherein the sheet metal member has a plurality of bosses, and the skeleton member has a plurality of bosses corresponding to the plurality of bosses. Wherein the sheet metal member and the frame member are fastened and fixed using a fastening member by passing the boss through the hole.

Further, an image display device according to a fifth invention of the present application is the image display device, wherein the skeleton member comprises:
It is characterized by being formed by die casting.

Still further, an image display device according to a sixth invention of the present application is the image display device, wherein the frame chassis has a radiation fin.

Further, the video display device according to the seventh invention of the present application is the video display device, wherein an electric circuit board is attached to a back surface of the frame chassis constituting the structure. .

Further, an image display device according to an eighth invention of the present application is the image display device, wherein the heat conductive member is:
The cross-sectional thickness of the peripheral portion is larger than that of the central portion.

According to a ninth aspect of the present invention, there is provided an image display device having a structure in which a plate-shaped display panel, a heat conductive member, and a frame chassis are sequentially stacked. The conductive member is characterized in that the cross-sectional thickness of the peripheral part is larger than that of the central part.

Here, the peripheral portion of the heat conducting member is a range in which a crack may occur, and a range in which a temperature change may occur due to heat transfer through the heat conducting member. Specifically, the range is from 5 mm to the center inward from the peripheral edge. Preferably 1 to inward from the peripheral edge
The range is up to 5 cm, more preferably up to 2-3 cm inward from the peripheral edge. Further, the heat conducting member has a larger cross-sectional thickness at the peripheral portion than at the central portion.

[0023] Further, an image display device according to a tenth aspect of the present invention is the image display device, wherein:
The thermal conductivity of the material forming the peripheral portion is smaller than the thermal conductivity of the material forming the central portion.

The video display device according to the eleventh invention of the present application is
A video display device having a structure in which a plate-shaped display panel, a heat conductive member, and a frame chassis are sequentially stacked, wherein the heat conductive member has a thermal conductivity of a material forming a peripheral portion. , Characterized by being smaller than the thermal conductivity of the material constituting the central portion.

Here, as the material having a low thermal conductivity, for example, an ultra-low hardness styrene gel material or a special polyurethane may be used.

[0026]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

(Embodiment 1) FIG. 1 shows a video display apparatus according to Embodiment 1 of the present invention. This video display device 1
No. 0 has a structure in which the display panel 1, the heat conductive member 2, and the frame chassis 3 are sequentially stacked.
Further, in the image display device 10, an electric circuit board 4 is attached to the rear of the frame chassis 3 constituting the structure.

Referring to the top view of FIG. 2, the structure of each part constituting the video display device 10 will be described in detail below. The display panel 1 is configured by bonding two glass substrates 1a and 1b, for example. A cable 40 is connected between the electric circuit board 4 and the two glass substrates to display an image on the display panel 1. The frame chassis 3 has a rectangular shape substantially the same size as the display panel 1, and includes a bar 31 for suppressing bending and a boss 32 having a screw hole for attaching the electric circuit board 4 on the back surface. Prepare. The frame chassis 3 is configured by combining two split chassis 3a and 3b as described later. The split chassis 3a and 3b are integrally formed with the back rail 31 and the boss 32 by aluminum die casting.

On the other hand, as can be seen from the top view of FIG. 2, the heat conducting member 2 is a rectangular sheet having substantially the same size as the display panel 1 and the frame chassis 3 and a thin sheet having appropriate elasticity. Things are used. The heat conductive member 2 is interposed between the display panel 1 and the frame chassis 3, and the display panel 1, the heat conductive member 2, and the frame chassis 3 are integrated to form a structure. The reason why the heat conductive member 2 having appropriate elasticity is interposed is that if the display panel 1 is directly supported by the frame chassis 3, the display panel 1 may be damaged. This is to absorb the shock generated between them to some extent. Thereby, the heat generated in the display panel 1 by the heat conductive member 2 is transmitted to the frame chassis 3 and is radiated from the frame chassis 3 to the surrounding air.
Therefore, the heat conducting member 2 has appropriate elasticity,
A material having a high thermal conductivity and a high heat resistance temperature, for example, a material made of silicone rubber is used. Specifically, the heat conductive member 2 was made of heat conductive silicon (for example, a heat conductivity of 1.13 W / (K · m) manufactured by Shin-Etsu Chemical Co., Ltd.). Since the heat conductive member 2 has a high adhesive strength, the display panel 1 can be favorably supported by being interposed between the display panel 1 and the frame chassis 3. On the back surface of the frame chassis 3, an electric circuit board 4 is attached to the boss portion. This image display device 10 usually has six corners or a midpoint of a longer side.
It is stored in a housing (not shown) with point support.

FIG. 3 is a perspective view of the frame chassis 3 constituting the video display device 10. This frame chassis 3 is characterized in that it is configured by combining two split chassis 3a, 3b having joining surfaces 37a, 37b along the short sides. In other words, the split chassis 3
Reference characters a and 3b correspond to respective portions obtained by dividing a long side portion of the frame chassis 3 in a direction along the short side. A projection 33a and a hole 34a are provided on a joint surface 37a of the divided chassis 3a, and holes 33b and 34b are provided on a joint surface 37b of the other divided chassis 3b. After the alignment, the projection 33a of the divided chassis 3a is inserted into the hole 33b of the divided chassis 3b, and the joining surfaces 37a and 37
b. Next, the holes 34a and 34b are fastened and fixed with bolts and nuts, and the divided chassis 3a and the divided chassis 3b are integrated. Even if the size of each divided chassis is 50 inches or less, a frame chassis having a size exceeding 50 inches can be formed by combining them. Thus, a video display device having a screen size exceeding 50 inches can be manufactured.

(Embodiment 2) FIG. 4 shows a frame chassis constituting a video display apparatus according to Embodiment 2 of the present invention. Compared with the image display device according to the first embodiment, the image display device is configured such that the frame chassis 3 constituting the image display device is joined to the joining surfaces 37c and 37 along the long sides.
The difference is that the two divided chassis 3c and 3d having a combination d are configured in combination. In other words, the divided chassis 3c, 3d correspond to each part obtained by dividing the short side of the frame chassis 3 in the direction along the long side. In the video display device, similarly to the video display device according to the first embodiment, even if the size of each of the divided chassis 3c and 3d is 50 inches or less, a frame chassis 3 having a size exceeding 50 inches is formed by combining them. be able to. Thus, a video display device having a screen size exceeding 50 inches can be manufactured. Also, usually
The long side of the frame chassis that has been subjected to the impact of the external force is largely bent, but the short side is relatively bent only slightly. The frame chassis 3 includes two divided chassis 3
Since the joining surfaces 37c and 37d of c and 3d are provided on the short side,
The occurrence of breakage on the joint surfaces 37c and 37d due to external force can be reduced.

(Embodiment 3) FIG. 5 shows a display panel 1, a heat conducting member 2, and a frame chassis 3 (a sheet metal member 30a and a frame member 30b) constituting an image display device according to Embodiment 3 of the present invention. FIG. 3 shows a perspective view in an exploded state. Comparing this video display device with the video display device according to the first embodiment, the difference is that the frame chassis 3 constituting the video display device combines a sheet metal member 30a and a frame member 30b. The sheet metal member 30a is an aluminum sheet metal member formed by extrusion or rolling. On the other hand, the frame member 30
b is an aluminum die-cast. The sheet metal member 30a has a rectangular shape substantially the same size as the display panel 1. Also,
The sheet metal member 30a and the frame member 30b are fixed to each other using a fastening member such as a bolt, a nut, and a screw, or a fixing member such as a rivet. Instead of integrally molding the entire frame chassis 3 by die-casting or the like,
The frame chassis 3 having a size exceeding 50 inches can be formed by separately manufacturing the sheet metal member 30a and the frame member 30b and then combining them. As a result, a video display device having a screen size exceeding a certain size, for example, a size exceeding 50 inches can be manufactured. Further, since the plane portion of the frame chassis 3 is separated as the sheet metal member 30a, the frame member 30b having a size equal to or larger than a predetermined size can be formed by die casting.

Further, in the frame chassis 3, a sheet metal member 30a is used in a portion that is in direct contact with the heat conductive member 2. Since this sheet metal member 30a is an aluminum sheet metal member obtained by extrusion or rolling, its heat conductivity is about 200 W / (K · m), and the aluminum die casting (96
W / (K · m)), and has excellent heat dissipation characteristics. Therefore, the frame chassis 3 has an excellent heat radiation characteristic of radiating the heat generated in the display panel 1 through the heat conduction member 2.

(Embodiment 4) FIG. 6 shows a frame chassis 3 constituting a video display apparatus according to Embodiment 4 of the present invention. The frame chassis 3 constituting the image display device is different from the frame chassis constituting the image display device according to Embodiment 3 in that the boss 38 provided on the sheet metal member 30a is passed through the hole 36 provided on the frame member 30b. ,
They differ in that they are fastened and fixed with fastening members such as screws and bolts. Since the frame chassis 3 is configured as described above, by removing the fastening member, the frame member 30b and the sheet metal member 30a that is in direct contact with the heat conducting member 2 can be easily disassembled. Thus, the display panel 1
The work efficiency of the maintenance can be improved, and the recyclability and reusability of the removed frame member 30b can be improved.

(Embodiment 5) FIG. 7 shows a frame chassis 3 constituting an image display apparatus according to Embodiment 5 of the present invention. The frame chassis 3 is different from the frame chassis constituting the video display device according to the third embodiment in that the frame chassis 3 has a radiation fin 35. The radiation fins 35 are attached to the frame chassis 3 at positions where the temperature rises greatly. The position where the temperature rise is large is a position corresponding to the upper center of the display panel 1 and a position where the temperature rise due to the power supply circuit board 4 attached to the back of the frame chassis 3 is large. The heat radiation fins 35 effectively dissipate heat to prevent overheating and temperature rise of the display panel 1 and to prevent cracking of the display panel 1 due to excessive thermal stress accompanying the temperature rise.

(Embodiment 6) FIG. 8 is a perspective view showing a state where a frame chassis 3 and a heat conducting member 2 constituting an image display apparatus according to Embodiment 6 of the present invention are separated. This image display device is different from the image display device according to the first embodiment in the cross-sectional shape of the heat conductive member 2 constituting the image display device. The heat conductive member 2 is made of heat conductive silicon (manufactured by Shin-Etsu Chemical Co., Ltd .: heat conductivity 1.13 W /
(K · m)). As shown in the cross-sectional view of FIG. 9, the surface of the heat conductive member 2 on the side of the display panel 1 is substantially flat as in the prior art, but the surface on the side of the frame chassis 3 has a cross-sectional thickness at the center. The cross-sectional thickness (2 mm) of the peripheral portion is larger than (1 mm). The surface of the frame chassis 3 facing the heat conducting member 2 has a smaller cross-sectional thickness at the periphery than at the center so as to conform to the shape of the heat conducting member 2. Note that the cross-sectional shape of the heat conducting member may be changed in thickness continuously without providing a step between the central portion and the peripheral portion as shown in FIG. The surface on the display panel side is not limited to a flat surface, but may be a curved surface.

The peripheral portion of the heat conducting member 2 is not limited to the region extending up to 3 cm inward from the peripheral edge as described above. The peripheral portion of the heat conducting member 2 has a range from 5 mm inward from the peripheral edge to half the length from the center to the center.
The peripheral portion of the heat conducting member 2 preferably has a range of 1 to 5 cm inward from the peripheral edge, and more preferably a range of 2 to 3 cm inward from the peripheral edge.

As described above, by increasing the cross-sectional thickness of the heat conducting member at the peripheral portion than at the central portion, the occurrence of cracks due to heat of the display panel can be significantly reduced as compared with the related art (for example, the probability of crack occurrence). Can be reduced to 1/3 or less.) The reason why cracks due to heat of the display panel can be reduced by making the cross-sectional shape of the heat conducting member 2 thicker at the peripheral portion than at the central portion as described above is considered as follows.
That is, the display panel 1 is liable to crack when the temperature change is large, and is particularly likely to be cracked since the temperature change is apt to be large in the peripheral portion. Therefore, by increasing the cross-sectional thickness of the peripheral portion of the heat conducting member 2, the heat capacity in the peripheral portion of the heat conducting member 2 is increased, and a temperature change due to the movement of heat via the heat conducting member can be suppressed. Accordingly, it is considered that the temperature change in the peripheral portion of the display panel 1 can be reduced, and thus the occurrence of cracks due to heat of the display panel 1 can be reduced.

(Embodiment 7) Comparing the video display device according to Embodiment 7 of the present invention with the video display device according to Embodiment 6, it constitutes a part of the video display device according to Embodiment 6. While the heat conductive member is entirely made of the same material, the heat conductive member 2 which forms a part of the image display device has a different material forming the peripheral portion from the material forming the central portion. Is different. That is, although not specifically shown, the heat conductive member 2 is characterized in that a material having a lower thermal conductivity than a material forming the central portion is used as a material forming the peripheral portion. Specifically, the heat conductive member 2 was made of heat conductive silicon (for example, a heat conductivity of 1.13 W / (K · m) manufactured by Shin-Etsu Chemical Co., Ltd.) as a material constituting the central portion. On the other hand, a region of 3 cm inward from the peripheral edge is defined as a peripheral portion, and an ultra-low hardness styrene-based gel material (for example, KG Gel (trade name) manufactured by Kitagawa Kogyo Co., Ltd., 0.53 W / (K · m)). Heat conduction member 2
Has a substantially uniform cross-sectional thickness of 1 mm at both the central portion and the peripheral portion. As described above, by using a material having a lower thermal conductivity than the material forming the central portion in the peripheral portion of the heat conducting member 2, the occurrence of cracks due to heat of the display panel 1 can be significantly reduced (for example, the cracks can be reduced as compared with the related art). The probability of occurrence can be reduced to half or less.) As a material having a low thermal conductivity, for example, the above-described ultra-low hardness styrene-based gel material or a special polyurethane (for example, OREX (trademark) manufactured by Iida Sangyo Co., Ltd.) may be used. In the above embodiment, the peripheral portion of the heat conductive member 2 is 3c inward from the peripheral edge.
m, but the peripheral portion of the heat conducting member 2 constituting the image display device according to the present invention is not limited to this range. The peripheral portion of the heat conducting member 2 has a range from 5 mm inward from the peripheral edge to half the length from the center to the center. The peripheral portion of the heat conducting member 2 preferably has a range of 1 to 5 cm inward from the peripheral edge, and more preferably a range of 2 to 3 cm inward from the peripheral edge.

The reason why cracks due to heat of the display panel 1 can be reduced by using a material having a lower thermal conductivity than the material constituting the central portion in the peripheral portion of the heat conductive member 2 as described above is as follows. It is thought to be. That is, by using a material having low thermal conductivity in the peripheral portion as described above, heat conduction from the peripheral portion of the display panel through the peripheral portion of the heat conducting member can be suppressed. As described above, by suppressing the heat conduction through the peripheral portion of the heat conducting member, it is possible to reduce the temperature change in the peripheral portion of the display panel, and thus it is considered that the occurrence of cracks due to heat can be reduced.

[0041]

As described in detail above, according to the video display device of the first invention of the present application, the frame chassis constituting the video display device is formed by combining a plurality of metal molded members. Even if each molding member is smaller than 50 inches, by combining them, it is possible to construct a frame chassis having a size exceeding 50 inches, which is difficult with current molding machines. This makes it possible to provide a video display device having a screen size exceeding 50 inches.

Further, according to the image display device of the second aspect of the present invention, since the molding member is molded by die casting, it can be molded with high precision.

According to the video display device according to the third aspect of the present invention, the frame chassis constituting the video display device includes:
The skeleton member and the sheet metal member are combined. The frame member can be formed by die-casting with a screen size of more than 50 inches, and the sheet metal member can be formed with a size of more than 50 inches by rolling or the like. Therefore, a frame chassis having a size exceeding 50 inches can be configured by combining the frame member and the sheet metal member. This makes it possible to provide a video display device having a screen size exceeding 50 inches. Further, since the sheet metal member has a higher thermal conductivity than the die-cast molded member, the heat radiation characteristics can be improved.

Further, according to the video display device of the fourth invention of the present application, the frame chassis constituting the video display device is composed of a frame member and a sheet metal member combined with a boss and a hole to form a fastening member from the back. Because it is fastened and fixed
It can be easily disassembled by removing the fastening member. As a result, the work efficiency of the maintenance of the display panel can be improved, and the recyclability and reusability of the frame member can be easily achieved.

Further, according to the video display device of the fifth aspect of the present invention, since the frame member is formed by die casting, it can be formed with high precision.

Further, according to the video display device of the sixth aspect of the present invention, the radiating fins are provided on the frame member constituting the frame chassis of the video display device.
Heat can be dissipated effectively. Thereby, the occurrence of cracks due to heat of the display panel can be significantly reduced.

According to the video display device of the seventh aspect of the present invention, the electric circuit board can be attached to the back of the frame chassis.

According to the video display device according to the eighth and ninth inventions of the present application, the cross-sectional shape of the heat conductive member 2 constituting the video display device is made larger at the peripheral portion than at the central portion. Since the temperature change due to the heat transfer in the peripheral portion can be suppressed, the temperature change in the peripheral portion of the display panel can be suppressed. Thereby, the occurrence of cracks in the peripheral portion of the display panel can be significantly reduced.

According to the image display device according to the tenth and eleventh aspects of the present invention, a material having a lower thermal conductivity than the material forming the central portion is provided around the heat conducting member 2 constituting the image display device. By using, it is possible to suppress the heat conduction through the peripheral portion of the heat conducting member, so that the temperature change in the peripheral portion of the display panel can be suppressed. Thereby, the occurrence of cracks in the peripheral portion of the display panel can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a video display device according to Embodiment 1 of the present invention.

FIG. 2 is a top view of the video display device according to the first embodiment of the present invention.

FIG. 3 is a perspective view of a frame chassis of the video display device according to Embodiment 1 of the present invention.

FIG. 4 is a perspective view of a frame chassis of the video display device according to Embodiment 2 of the present invention.

FIG. 5 is a perspective view of a display panel, a heat conductive member, and a frame chassis of an image display device according to Embodiment 3 of the present invention.

FIG. 6 is an exploded perspective view of a frame chassis of the video display device according to Embodiment 4 of the present invention.

FIG. 7 is a perspective view of a frame chassis of a video display device according to Embodiment 5 of the present invention.

FIG. 8 is a perspective view of a heat conductive member and a frame chassis of an image display device according to Embodiment 6 of the present invention.

FIG. 9 is a cross-sectional view of the heat conducting member of FIG.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 display panel 1 a, 1 b glass substrate 2 heat conductive member 3 frame chassis 3 a divided chassis a 3 b divided chassis b 3 c divided chassis c 3 d divided chassis d 4 electric circuit board 10 video display device (PDP device) 20 a peripheral portion 20 b central portion 30 a Sheet metal member 30b Skeleton member 31 Bar 32 Boss 33a, 33b, 33c, 33d Positioning hole 34a, 34b, 34c, 34d Fastening hole 35 Heat radiation fin 36 Sheet metal member mounting hole 37a, 37b, 37c, 37d Joining surface 38 Sheet metal member Mounting boss 40 cable

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hirotsugu Basuyasu 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F term (reference) 2H089 HA40 QA06 4E360 AB05 AB14 AB52 ED02 ED03 ED27 EE15 GA11 GA24 GB04 GC04 5G435 AA06 AA12 BB06 BB12 EE02 EE04 GG44

Claims (11)

[Claims] 1. An image display device having a structure in which a plate-shaped display panel, a heat conductive member, and a frame chassis are sequentially stacked, wherein the frame chassis includes a plurality of metal molded members. A video display device characterized by combining: 2. The image display device according to claim 1, wherein the metal forming member is formed by die casting. 3. An image display device having a structure in which a plate-shaped display panel, a heat conductive member, and a frame chassis are sequentially stacked, wherein the frame chassis includes a frame member and a sheet metal member. An image display device characterized by being combined. 4. The sheet metal member has a plurality of bosses, the frame member has a plurality of holes corresponding to the plurality of bosses, and the sheet metal member and the skeleton member have the boss formed in the hole. The video display device according to claim 3, wherein the video display device is fastened and fixed using a fastening member. 5. The image display device according to claim 3, wherein the frame member is formed by die casting. 6. The image display device according to claim 1, wherein the frame chassis has a radiation fin. 7. The video display device according to claim 1, wherein an electric circuit board is attached to a back surface of the frame chassis forming the structure. 8. The heat conduction member according to claim 1, wherein a peripheral portion has a larger cross-sectional thickness than a central portion.
8. The video display device according to any one of claims 1 to 7. 9. A video display device having a structure in which a plate-shaped display panel, a heat conductive member, and a frame chassis are sequentially stacked, wherein the heat conductive member is located in a peripheral part rather than a central part. An image display device characterized in that the section thickness of the image is increased. 10. The thermal conductive member according to claim 1, wherein a thermal conductivity of a material forming a peripheral portion is smaller than a thermal conductivity of a material forming a central portion. An image display device according to the item. 11. A plate-shaped display panel, a heat conductive member,
An image display device having a structure configured by sequentially stacking a frame chassis and a heat conductive member, wherein the heat conductive member has a thermal conductivity of a material forming a peripheral portion, which is higher than a thermal conductivity of a material forming a central portion. An image display device characterized in that it is also small.