JP2001337612A - Plane type display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable to lower the device's surface temperature of a device by realising the stable high thermal radiation efficiency over the inside/outside of the device with low cost and light weight. SOLUTION: The device is constituted by possessing thermal conduction members 106(a), 106(b) as a means to conduct the heat of heat generation parts 105(a), 105(b) inside a housing, which houses an image forming panel 102 and a driving circuit substrate 110 and is comprised of housing parts 101(a), 102(b), etc., to the housing, being mounted wall-hanging fixing units 103, 104 as a means to rule the distance to a wall behind the housing 107 and thermal insulating materials 180(a), 180(b) as a thermal insulating means between the back cover of the housing 111 and bezels 160(a), 160(b), and the thermal conduction members 106(a), 106(b) possess the elasticity.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a flat display device used as a character or image display device such as a display of a television receiver or a computer, a message board or the like.

[0002]

2. Description of the Related Art In recent years, a color cathode ray tube (CRT) has been widely used as an image display device. However, since the driving principle is to deflect an electron beam from a cathode to emit a phosphor on a screen, Depth was required along with the screen size. As the size of the screen increases, the depth dimension also increases. Therefore, there is a strong demand for a flat display device that is thin and light in weight because of problems such as an increase in installation space and an increase in weight. Examples of an image forming panel used in a flat display device include a surface electron emission display panel (hereinafter abbreviated as SED), a plasma display panel (hereinafter abbreviated as PDP), a liquid crystal display device (hereinafter abbreviated as PDP). Is abbreviated as LCD), a field emission display (hereinafter abbreviated as FED), and a plasma display.
There is an address / liquid crystal display device (hereinafter abbreviated as PALC) (JP-A-09-0452666, JP-A-05-002370, JP-A-05-158016).
JP, JP-A-05-114372 and JP-A-05-114372
No. 5-142523). FIG. 19 is a cross-sectional view of a conventional flat display device (FIG. 19 is Japanese Patent Application Laid-Open No. 9-1990).
40 is a cross-sectional view of the PDP disclosed in No. 40).

In FIG. 19, a plasma display panel 100 as an image forming panel includes a main body 1 and a heat radiating member 4. The main body 1 has a thickness of about 5.5 mm. Although not shown, the main body 1 also has a plurality of flexible circuits for electrically connecting an electrode for driving the electric circuit and the electrodes. The flexible circuits are tape-shaped, protrude from the peripheral end surface of the main body 1 to the outside, and are arranged with an interval therebetween. The driving electric circuit may be formed by bending a flexible circuit along the side surface of the plasma display panel 100, or by driving the back surface 11 of the main body.
Or superimposed.

[0004] The main body 1 is distorted by heat when the upper substrate and the lower substrate are joined, and is curved such that the back surface is concave. 2 mm between the end of the main body 1 and the maximum bending part
There is a gap. The heat radiating member 4 made of aluminum or an aluminum alloy is joined to the back surface 11 of the main body via an adhesive layer 50 applied with a thickness of about 0.1 mm. The adhesive is applied to the entire back surface 1 of the main body 1
Adhered to 1. As the adhesive, a one-component heat-curable silicone adhesive having excellent rubber elasticity (for example, FE-61 manufactured by Shin-Etsu Chemical Co., Ltd.) is used.

When the plasma display panel 100 is used, the heat generated inside the main body 1 is radiated to the outside through the wall surface of the main body 1, and is particularly transmitted from the back surface 11 to the heat radiating member 4 via the adhesive layer 50, The heat is radiated from the surface of the heat radiating member 4, particularly the surface of the fin 42, to the outside air.

The housing 70 of the display device is an aluminum box. Plasma display panel 10
No. 0 is attached to the housing 70 so that its surface faces outside from the opening on the front surface of the housing 70 and the outer surface of the side 44 is joined to the inner surface of the side of the housing 70. The fins 42 are rows that extend in the vertical direction of the plasma display panel 100, and facilitate the generation of natural convection. In addition, when the tip of the fin 42 contacts the rear surface of the housing 70, a heat flow is generated from the plasma display panel 100 to the fin 42 → the rear surface of the housing 70. The heights of the fins 42 and the side portions 44 are set so that the tips of the fins 42 protrude from the tip portions of the side portions 44. Although not shown, ventilation holes are formed in the upper and lower surfaces and side surfaces of the housing 70, and the air moves in and out through the ventilation holes. An external heat dissipating member 140 is attached to the outer surface of the back of the housing 70 so as to be able to conduct heat, thereby increasing the heat dissipating area. The rear surface of the housing 70 may be formed in a mesh shape to further increase the area of the ventilation hole.

The external heat radiating member 140 is an aluminum fin type heat radiator. A heat radiator (a so-called corrugated body) having a thin corrugated plate disposed between two thin flat plates,
A radiator made of a honeycomb body can be used.

The heat generated during the display of the plasma display panel 100 is transmitted to the heat radiating member 4 and radiated from the fins 42 into the air, or transmitted from the fins 42 and the side portions 44 to the housing 70 and from the surface of the housing 70. The heat is dissipated into the air, or transmitted from the housing 70 to the external heat dissipating member 140 and dissipated from the surface thereof into the air.

Since the plasma display panel 100 is required to be thin, the volume of the entire device is small and the heat generation density is extremely high. Therefore, the fins 42 are provided to prevent runaway due to heat and shortening of the life.

[0010]

However, as in the above-described conventional display device, the housing 70 and the main body 1 that is a heat source are generated.
In this method, after the heat of the main body 1 is transmitted to the rear side of the housing 70 via the fins 42, the heat is also transmitted to the side surface of the housing 70 and the front surface of the screen 70, and There was almost no temperature difference on the front side of the screen. As a result, the rise in the surface temperature of the housing 70 has been a controlling factor on the high temperature side of the product operating temperature range. In addition, the attachment of the fins 42 makes the device heavier and increases the component cost. Furthermore, there was no deterioration with time, and there was no stable heat radiation means which was not affected by the environment. Because, even in the fin 42,
The member repeatedly repeats thermal expansion and contraction due to a temperature change when the plasma display panel 100 is driven and stopped,
If the mounting accuracy is poor, there is a problem that a gap is generated at the joint and the thermal conductivity is deteriorated. Further, when the back surface of the plasma display panel 100 is closed for some reason, even if the external heat dissipating member 140 is present, heat is trapped, so that there is a problem that sufficient heat dissipated.

The present invention has been made in view of the above-mentioned conventional problems, and realizes stable and high heat radiation efficiency inside and outside the device at low cost and light weight, and also enables the temperature of the surface of the flat display device to be reduced. It is an object of the present invention to provide a flat-panel display device capable of deregulating the high-temperature side of a use temperature range.

[0012]

In order to achieve the above object, the present invention provides a flat panel display having means for transferring heat of a heat-generating component inside a housing containing an image forming panel to the housing. Wherein a means for defining a distance to the rear wall outside the housing is provided, and a heat insulating means is provided between the rear cover and the bezel.

Further, the present invention is a flat display device in which the image forming panel is a surface electron emission display panel (SED), and the means for defining the distance is a wall-mounted fixing unit of the flat display device. Is also included.

Further, according to the present invention, the heat insulating means is provided with a hole in a housing part, the heat insulating means is a heat insulating material formed of glass wool,
It may be either a heat insulating material made of a porous substance, and the heat conducting member used as the means for conducting heat may have elasticity.

Further, according to the present invention, the housing may have a heat radiating fin, and the heat radiating fin may have the same cross-sectional shape on all surfaces normal to the direction of gravity. It may have a fin, and the shape of the heat radiation fin may be an upper flow path enlarged arrangement shape.

Further, according to the present invention, the cross-sectional shape may be any one of a square type, a claw type, a stepped type, a semicircular type, and a triangular type. Is desirable.

Further, according to the present invention, the wall-mounted fixing unit has a cross-sectional area of 1 to 3 on all surfaces whose normal is the direction of gravity.
Is preferably in the range of 000 mm ^2, The present invention also, the cross-sectional area of in all aspects with the same normal to the normal direction of the wall of the wall hanging fixing unit is in a range of 1～6000Mm ² Is also good.

Further, according to the present invention, in the radiation fin,
A flat display device having a fin tip interval of 0.5 to 10 mm can also be used.

[0019]

According to the present invention, in the flat display device having the above structure, stable and high heat radiation efficiency inside and outside the flat display device is realized at low cost and light weight, and the temperature of the surface of the flat display device is reduced. It is possible to relax regulations on the high temperature side of the product use temperature range.

[0020]

FIG. 1 is a perspective view showing an outline of a flat-panel display according to an embodiment of the present invention. A- of FIG.
FIG. 2 shows an A ′ cross section. In the figure, reference numeral 102 denotes an image forming panel using the above-described SED, PDP, LCD, FED, or PALC, and reference numeral 110 denotes a drive circuit board disposed on the back of the image forming panel 102. The image forming panel 102 and the drive circuit board 110 are electrically connected by a flexible printed wiring board (not shown). 105 (a) and 105 (b) show the drive circuit board 1
The heat-generating component is mounted on 10. This heating component 1
05 (a) and 105 (b) are, for example, the drive circuit board 11
0 at the four corners of the image forming panel 102 and the drive circuit board 110.
(A), 124 (b), 124 (c), 124 (d), which are fixed to the screw (not shown) to form a housing component which surrounds the image forming panel 102 and the drive circuit board 110 It is. The image forming panel 102 has a bezel 1
It is housed inside 60 (a) and 160 (b).

The housing parts 101 (a), 101 (b), 1
01 (c), 101 (d) and housing corner member 124
The non-enclosed portions of the image forming panel 102 and the drive circuit board 110 that are not surrounded by (a), 124 (b), 124 (c), and 124 (d) Heating component 105 (a), 1
05 (b). 111 covers the non-enclosed portion of the drive circuit board 110,
01 (a), 101 (b), 101 (c), 101
The image forming panel 102 and the drive circuit board 110 are fastened by screws (not shown) in FIG. In this case, 180
(A) and 180 (b) show the case back cover 111 and the case parts 101 (a), 101 (b), 101 (c) and 101.
The heat insulating material sandwiched by (d). The heat insulating materials 180 (a) and 180 (b) are, for example, a material formed by molding glass wool or a porous substance, but are not particularly limited in material and shape as long as they have a heat insulating effect. 106
(A) and (b) are heat conducting members that connect the rear cover of the housing and the above-described heat-generating components 105 (a) and 105 (b). Reference numerals 103 and 104 denote wall hanging fixing units for fixing the flat display device 130 assembled in this way to the wall 107 at the installation location. Also, the housing component 10
1 (a), 101 (b), 101 (c), 101 (d)
Is made of metal and is manufactured by cutting. For example, a magnesium alloy, an aluminum alloy or the like is used.

The wall-mounted fixing units 103 and 104 are made of stainless steel, and are SUS304,
One of SUS316 was cut and manufactured. Also,
The wall hanging fixing units 103 and 104 are distance defining portions 103 (b) and 104 vertically projecting by a predetermined length from the fixing pieces 103 (a) and 104 (a) fixed to the wall 107.
(B) as a single unit. Heat conduction member 106
(A) and (b) are heat-generating components 105 (a) and 10 (a).
Heat is removed from the rear cover 11 so that the temperature of FIG.
It plays the role of letting one escape.

Here, the heat conducting members 106 (a), 106
(B) shows the heating component 1 on the drive circuit board 110 described above.
It is composed of a pedestal and a heat transfer component which are in close contact with each other by an adhesive (not shown) having good thermal conductivity on the portions 05 (a) and 105 (b).

The heat transfer component is made of a metal having good heat conductivity and has an elastic spring structure. Thus, even when the distance between the housing rear cover 111 and the drive circuit board 110 is changed due to maintenance removal, thermal expansion, or the like, the housing rear cover 111 can be sufficiently contacted with the housing rear cover 111. Therefore, assembling and disassembly became possible without increasing the thermal resistance, and a stable high-efficiency heat radiation structure was able to be constructed. In addition, heat conduction member 1
06 (a) and 106 (b) reduce the occupied area of the horizontal cross-sectional component and reduce the pressure loss so as not to block the passage of fluid when natural convection occurs in the flat display device 130. I have. In this structure, the heat generating component 105
(A), 105 (b) only heat conduction members 106 (a),
106 (b) is lighter in weight than the entire surface, and furthermore, the heat conducting members 106 (a) and 106 (b) are attached.
In (b), the manufacturing process was simple, and the unit cost was able to be suppressed as compared with the radiation fin.

The flat display device 130 has a heat dissipation structure to the atmosphere, and the heat of the housing rear cover 111 transmitted from the IC through the heat conducting members 106 (a) and 106 (b) is transmitted to the flat display device 130 itself. It has a structure in which cooling is performed by natural convection of air passing through the wall 107.
Therefore, the flat-panel display device 130 includes the wall-mounted unit 1.
With reference to 03 and 104, it is fixed to the wall while keeping the distance (40 mm) to the wall 107 constant. This is because the housing back cover 11 is located between the flat display device 130 and the wall 107.
This is for securing the cooling air flow path of No. 1 and ensuring the air flow rate at a certain level or more. At this time, the wall-mounted unit 1 is designed so as not to block the flow path of the air flowing along the flat display device 130.
It is preferable to set the dimensions so that the horizontal longitudinal thickness of the flat panel display devices 03 and 104 is as short as possible. For example, it is preferable that the cross-sectional areas of all the surfaces of the wall hanging units 103 and 104 whose normal line is the gravity direction be in the range of 1 to 3000 mm ² .

The wall-mounted units 103, 104
Has a role of transferring the heat of the housing back cover 111 to the wall 107, and therefore, the wall hanging fixing units 103 and 104 on all surfaces having the same normal line as the normal direction of the wall 107.
When the cross-sectional area is in the range of 1 to 6000 mm ² , heat can be radiated well without impairing the appearance. further,
Radiation fins are provided on the side of the wall 107 of the housing rear cover 111. The radiation fins are coated with a black body paint for heat radiation. In addition, since the design is made so that human fingers do not enter between the radiating fins, the temperature difference between the root and the tip of the radiating fins is used to mitigate the restrictions on the high temperature side of the product operating temperature range. .

In the flat display device 130, the distance from the wall 107 is defined by the wall hanging units 103 and 104, so that efficient heat radiation on the wall side can be stably performed. The flat display device 130 includes a housing rear cover 111 and housing components 101 (a), 101 (b), 101 (c),
Insulation materials 180 (a) and 180 (b) between 101 (d)
Is sandwiched. This is a heat insulating means, and the heat of the housing rear cover 111 transmitted from the heat-generating components 105 (a) and 105 (b) is converted into the heat generated by the housing components 101 (a) and 101 (b).
(B), 101 (c), and 101 (d), so that the case parts 101 (a), 101 (b), 101
The structure is such that the temperature rise of (c) and 101 (d) is less than half. For this reason, regulations on the high temperature side of the product operating temperature range could be relaxed.

From the above, according to the present embodiment,
It was possible to manufacture a light-weight product that had stable and efficient heat radiation means, had a small rise in surface temperature, and did not become a factor in regulating the high-temperature side of the product operating temperature range, at a low cost.

[0029]

(Embodiment 1) FIG. 1 is a perspective view showing an outline of a flat panel display according to Embodiment 1 of the present invention. A- of FIG.
FIG. 2 shows an A ′ cross section.

In the figure, reference numeral 102 denotes an image forming panel using the above-described SED, and reference numeral 110 denotes a drive circuit board disposed on the back of the image forming panel 102. The image forming panel 102 and the drive circuit board 110 are electrically connected by a flexible printed wiring board (not shown). 105 (a) and 105 (b) show the drive circuit board 1
The heat-generating component is mounted on 10. This heating component 1
05 (a) and 105 (b) are, for example, an IC for performing drive switching and an electric supply circuit. 101 (a), 10
1 (b), 101 (c), and 101 (d) sandwich the four sides of the image forming panel 102 and the driving circuit board 110, and form the housing corners at the four corners of the image forming panel 102 and the driving circuit board 110. Members 124 (a), 124 (b),
A housing component that forms a housing that surrounds the image forming panel 102 and the drive circuit board 110 by being fixed to the screws 124 (c) and 124 (d) (not shown). The image forming panel 102 includes bezels 160 (a), 160
It is stored inside (b).

The housing parts 101 (a), 101 (b), 1
01 (c), 101 (d) and housing corner member 124
The non-enclosed portions of the image forming panel 102 and the drive circuit board 110 which are not surrounded by (a), 124 (b), 124 (c), 124 (d) Heating component 105 (a), 1
05 (b). 111 covers the non-enclosed portion of the drive circuit board 110 and
01 (a), 101 (b), 101 (c), 101
The image forming panel 102 and the drive circuit board 110 are fastened by screws (not shown) in FIG. In this case, 180
(A) and 180 (b) show the case back cover 111 and the case parts 101 (a), 101 (b), 101 (c) and 101.
The heat insulating material sandwiched by (d). The heat insulating materials 180 (a) and 180 (b) are formed of, for example, glass wool, but may be formed of a porous material. 106 (a) and 106 (b) are heat conducting members for connecting the rear cover of the housing and the above-described heat generating components 105 (a) and 105 (b). The flat display device 130 thus assembled is mounted on the wall 1 of the installation location.
07 is a wall-mounted fixing unit.

The housing parts 101 (a), 101
(B), 101 (c), and 101 (d) are made of a magnesium alloy, and were manufactured by cutting a magnesium alloy.

The wall-mounted fixing units 103 and 104 are made of stainless steel, and are SUS304 of Japanese Industrial Standard.
Was manufactured by cutting. In addition, the wall-mounted fixing unit 10
3 and 104 are fixed pieces 103 fixed to the wall 107.
(A), 104 (a) and the fixed pieces 103 (a), 10 (a).
4 (a), a distance defining portion 1 vertically projecting at a predetermined length.
03 (b) and 104 (b). The heat conducting members 106 (a) and 106 (b)
(A), 105 (b) serves to release heat to the rear cover 111 of the housing so that thermal runaway and shortening of the service life do not occur due to the temperature higher than the operation guarantee temperature.

Here, the heat conducting members 106 (a), 106
(B) is shown in FIG. FIG. 4 is a sectional view taken along the line BB ′ of FIG.
Shown in Reference numeral 121 denotes a pedestal which is in close contact with the heat-generating components 105 (a) and 105 (b) on the drive circuit board 110 by an adhesive (not shown) having good thermal conductivity, and has a screw hole at the center. Have been. 122 (a), 122
(B), 122 (c), 122 (d), 122 (e),
122 (f), 122 (g) and 122 (h) are screws 1
20 is a heat transfer component that is fixed to the pedestal 121 by being superimposed on the pedestal 121 in ascending order by the screw holes 20.

Heat transfer parts 122 (a), 122 (b), 1
22 (c), 122 (d), 122 (e), 122
(F), 122 (g), and 122 (h) are obtained by pressing an aluminum alloy plate having a thickness of 1.5 mm and simultaneously drilling holes for screws to form a superposed plate portion and a superposed plate portion, respectively. And an elastic plate portion bent at an angle range of less than 90 degrees from both ends of each of them. Each elastic plate portion is dimensioned such that, when the superposed plate portions are superimposed in descending order, there is a gap between adjacent members and the tips are flush. Heat transfer components 122 (a), 1
22 (b), 122 (c), 122 (d), 122
(E), 122 (f), 122 (g), 122 (h) are overlapped and combined, and are tightened to the pedestal 121 with the screws 120, so that the heat conducting members 106 (a), 106 (
(B) was produced.

The heat conducting member 106 thus manufactured
(A) and 106 (b) have an elastic spring structure, and even when the distance between the housing rear cover 111 and the drive circuit board 110 is changed due to removal due to maintenance, thermal expansion, or the like, sufficient. It can come into contact with the housing rear cover 111. Therefore, assembling and disassembling can be performed without increasing the thermal resistance, and a stable high-efficiency heat radiation structure can be formed. In addition, the heat conducting member 10
6 (a) and 106 (b) reduce the component occupation area of the horizontal cross section (BB ′ cross section) so as not to block the passage of fluid when natural convection occurs in the flat display device 130. , Reducing pressure loss.

In this structure, the heat generating components 105 (a), 1
05 (b) only the heat conductive members 106 (a), 106
(B) is attached, the weight is lighter than that of the entire fin attachment, and the heat conducting members 106 (a), 106
In (b), the manufacturing process was simple, and the unit cost was able to be suppressed as compared with the radiation fin.

The flat display device 130 has a heat dissipation structure to the atmosphere, in which the heat of the housing rear cover 111 transmitted from the IC through the heat conducting members 106 (a) and 106 (b) is transmitted to the flat display device 130 itself. It has a structure in which cooling is performed by natural convection of air passing through the wall 107.
Therefore, the flat-panel display device 130 includes the wall-mounted unit 1.
With reference to 03 and 104, it is fixed to the wall while keeping the distance (40 mm) to the wall 107 constant. This is because the housing back cover 11 is located between the flat display device 130 and the wall 107.
This is for securing the cooling air flow path of No. 1 and ensuring the air flow rate at a certain level or more. At this time, the wall-mounted unit 1 is designed so as not to block the flow path of the air flowing along the flat display device 130.
It is preferable to set the dimensions so that the horizontal longitudinal thickness of the flat panel display devices 03 and 104 is as short as possible. The flat display device 130 includes a wall-mounted unit 103, 1
By defining the distance from the wall 107 by 04, efficient heat radiation on the wall side could be stably performed.

The flat display device 130 is a cover 1 for the rear of the housing.
11 and housing parts 101 (a), 101 (b), 101
Heat insulation materials 180 (a), 18 between (c), 101 (d)
0 (b) is inserted. This is a heat insulating means, and the heat of the housing rear cover 111 transmitted from the heat-generating components 105 (a) and 105 (b) is transmitted to the housing components 101 (a) and 10 (a).
1 (b), 101 (c), and 101 (d), so that the temperature of the rear cover 111 of the housing can be increased and the housing components 101 (a), 101 (b), 101
The structure is such that the temperature rise of (c) and 101 (d) is less than half. For this reason, regulations on the high temperature side of the product operating temperature range could be relaxed.

As described above, according to the present embodiment, a light-weight product that has stable and efficient heat radiation means, has a small rise in surface temperature, and does not cause a restriction on the high temperature side of the product operating temperature range, It was possible to manufacture at a low cost.

(Embodiment 2) FIG. 5 is a perspective view showing an outline of a flat panel display according to Embodiment 2 of the present invention. C in FIG.
FIG. 6 shows a section taken along the line −C ′.

In the figure, reference numeral 202 denotes an image forming panel using the above-described SED, and reference numeral 210 denotes a drive circuit board disposed on the back of the image forming panel 202. The image forming panel 202 and the drive circuit board 210 are electrically connected by a flexible printed wiring board (not shown). 205 (a) and 205 (b) are the drive circuit board 21
0 is a heat-generating component mounted on the “0”. This heating component 20
5 (a) and 205 (b) are, for example, an IC for performing drive switching and an electric supply circuit. 201 (a), 201
(B), 201 (c), and 201 (d) sandwich the four sides of the image forming panel 202 and the driving circuit board 210, and form a housing corner member at four corners of the image forming panel 202 and the driving circuit board 210. 224 (a), 224 (b), 2
24 (c) and 224 (d) are housing components that form a housing that surrounds the image forming panel 202 and the drive circuit board 210 by being fastened with screws (not shown).
The image forming panel 202 includes bezels 260 (a), 260
It is stored inside (b). Housing parts 201 (a), 2
01 (b), 201 (c), 201 (d) and housing corner members 224 (a), 224 (b), 224 (c), 22
4 (d), the image forming panel 202 not surrounded by
And the non-enclosed portion of the drive circuit board 210 are the screen portion of the image forming panel 202 and the heat generating component 20 of the drive circuit board 210.
5 (a) and 205 (b).
211 covers the non-enclosed portion of the drive circuit board 210, and the housing components 201 (a), 201 (b), 201
(C) and 201 (d) are rear covers that are fastened by screws (not shown) and enclose portions of the image forming panel 202 and the drive circuit board 210 other than the screen. 2
Reference numerals 06 (a) and 206 (b) are heat conducting members that connect the rear housing cover 211 and the above-described heat-generating components 205 (a) and 205 (b). Reference numerals 203 and 204 denote the flat display device 230 assembled in this manner on the wall 2 of the installation location.
07 is a wall-mounted fixing unit.

The housing parts 201 (a), 201 (b), 2
01 (c) and 201 (d) are made of aluminum alloy, and are manufactured by cutting. The wall hanging fixing units 203 and 204 are made of stainless steel as a material, and are manufactured by cutting SUS316 of Japanese Industrial Standard. The heat conducting members 206 (a) and 206 (b)
The heat-generating components 205 (a) and 205 (b) serve to release heat to the rear cover 211 of the housing so that heat runaway and shortening of the service life of the heat-generating components 205 (a) and 205 (b) do not occur. Here, a cross section of the heat conduction members 206 (a) and 206 (b) is shown in FIG.

Reference numeral 221 denotes a pedestal which is in close contact with the heat-generating components 205 (a) and 205 (b) on the drive circuit board 210 by an adhesive (not shown) having good heat conductivity. Screw holes are drilled. 222 (a), 2
22 (b), 222 (c), 222 (d), 222
(E), 222 (f), 222 (g), 222 (h)
Is a heat transfer component which is fixed to the pedestal 221 by being superimposed on the pedestal 221 by the screw 220 and the screw hole.

Heat transfer parts 222 (a), 222 (b), 2
22 (c), 222 (d), 222 (e), 222
(F), 222 (g) and 222 (h) are obtained by pressing an aluminum alloy plate having a thickness of 1.5 mm and simultaneously drilling holes for screws, thereby forming a superposed plate portion and the superposed plate. And an elastic plate portion formed by concavely curving the rear cover 211 from both ends of the portion. Each elastic plate portion is dimensioned such that, when the superposed plate portions are superimposed in descending order, there is a gap between adjacent members and the tips are flush. The heat conductive members 206 (a) and 206 (b) are composed of heat transfer components 222 (a), 222 (b) and 222 having different sizes.
(C), 222 (d), 222 (e), 222 (f),
222 (g) and 222 (h) are combined to form a pedestal 121
It was produced by tightening with a screw 120.

The heat conduction member 206 thus produced
(A) and 206 (b) have an elastic spring structure, and even if the distance between the housing rear cover 211 and the drive circuit board 210 is changed due to removal due to maintenance, thermal expansion, or the like, sufficient. The housing back cover 211 can be contacted. Therefore, assembling and disassembling can be performed without increasing the thermal resistance, and a stable high-efficiency heat radiation structure can be formed. In addition, heat conduction member 2
06 (a) and 206 (b) are horizontal sections (at the same positions as BB ′ in FIG. 3) so as not to block the passage of fluid when natural convection occurs inside the flat panel display device 230. The area occupied by the parts in the (cross section) shape is reduced so that the pressure loss is reduced.

In the above structure according to this embodiment, the heat-generating component 2
05 (a) and 205 (b) only
(A) and 206 (b) are attached, so that the weight is lighter than the entire fin attachment, and the heat conducting member 20 is attached.
6 (a) and 206 (b), the manufacturing process was simple, and the unit cost was able to be suppressed as compared with the radiation fins.

The housing parts 201 (a), 201 (b), 2
01 (c) and 201 (d) are made of a magnesium alloy, and were manufactured by cutting a magnesium alloy. The housing rear cover 211 is 2 mm thick, and is formed by cutting a magnesium alloy into a cutting hole.
01 (a), 201 (b), 201 (c), 201
(D) was fixed by screwing (not shown).

The flat display device 230 has a structure for dissipating heat to the atmosphere, in which the heat of the housing rear cover 211 transmitted from an IC or the like through the heat conducting members 206 (a) and 206 (b) is transmitted.
It has a structure in which cooling is performed by natural convection of air passing between the flat display device 230 itself and the wall 207. Therefore, the flat display device 230 is separated from the wall 207 (40 m) by the wall hanging units 203 and 204.
m) was fixed to the wall 207 while keeping constant. This is to secure an air flow path for cooling the housing rear cover 211 between the flat display device 230 and the wall 207, and to secure a certain or more air flow rate.

The wall hanging units 203 and 204
By shortening the flat display device 230 to 5 mm in the horizontal longitudinal direction, an effect of not blocking the flow path of the air flowing along the flat display device 230 is produced. This is because, for example, the cross-sectional areas of all the surfaces of the wall-mounted fixing units 203 and 204 whose normal direction is the gravity direction are 1600 to 24.
Is a 00mm ^2, it may be in the range of 1~3000mm ^2. Further, by increasing the length along the natural convection flow of the wall hanging units 203 and 204, the amount of heat transferred from the housing rear cover 211 to the wall 207, which is transmitted through the wall hanging units 203 and 204, is increased. For example, the cross-sectional area of the wall-hanging fixing units 203 and 204 on all surfaces having the same normal line as the normal direction of the wall 207 is 200.
Is a 0~4100mm ^2, it may be in the range of 1~6000mm ^2. By defining the distance from the wall 107 by the wall hanging units 203 and 204, the flat display device 230 can stably perform efficient heat radiation on the wall 207 side.

The housing parts 201 (a), 201
In (b), 201 (c), and 201 (d), the provision of the outflow port 208 and the inflow port 209 in the upper portion and the lower portion serves as a heat insulating means, and the heat-generating components 205 (a), 205
The heat of the housing rear cover 211 transmitted from (b) is transferred to the bezels 260 (a) and 260 of the flat display device 230.
(B), the case parts 201 (a), 201
(B), 201 (c), and 201 (d) have a structure in which the temperature rise is at most half or less. For this reason, regulations on the high temperature side of the product operating temperature range could be relaxed.

As described above, according to the present embodiment, a light-weight product that has stable and efficient heat radiation means, has a small rise in surface temperature, and does not cause a restriction on the high temperature side of the product operating temperature range, It was possible to manufacture at a low cost.

(Embodiment 3) The configuration of the entire flat display device according to Embodiment 3 of the present invention is the same as that shown in FIGS. FIG. 8 is a plan cross-sectional view of a third embodiment of the present invention in which only the heat conductive members 206 (a) and 206 (b) are changed.

In the figure, reference numeral 321 denotes a pedestal which is in close contact with the heat-generating components 305 (a) and 305 (b) on the drive circuit board 210 by an adhesive (not shown) having good thermal conductivity. There is a screw hole in the center. 322
(A), 322 (b), 322 (c), 322 (d),
322 (e), 322 (f), 322 (g), 322
(H) shows the pedestal 32 with the screw 320 and the screw hole.
1 are heat transfer components that are stacked and fixed in order from the largest.

Heat transfer parts 322 (a), 322 (b), 3
22 (c), 322 (d), 322 (e), 322
(F), 322 (g), and 322 (h) are formed by pressing a 1.5-mm-thick aluminum alloy plate at the same time as forming a hole for a screw at the same time as pressing, thereby forming a double-sided plate portion and both ends of the double-sided plate portion. Then, after plastic deformation to provide an elastic plate portion formed by bending the rear cover 211 in a convex shape from the rear cover 211, it was manufactured by heat treatment. Each elastic plate portion is dimensioned such that, when the superposed plate portions are superimposed in descending order, there is a gap between adjacent members and the tips are flush. The heat conducting members 206 (a) and 206 (b) are composed of the heat transfer components 322 (a) and 322 having different sizes.
(B), 322 (c), 322 (d), 322 (e),
322 (f), 322 (g), and 322 (h) were assembled and tightened to the pedestal 321 with screws 320.

The heat conductive member 206 manufactured as described above
(A) and 206 (b) have an elastic spring structure, so that the housing back cover 211 and the drive circuit board 210
The housing rear cover 211 even when the distance from the
It can be contacted with. Therefore, assembling and disassembling can be performed without increasing the thermal resistance, and a stable high-efficiency heat radiation structure can be formed. In this case, the heat conduction members 206 (a) and 206 (b) have a horizontal cross-sectional component occupying area in consideration of not blocking the passage of fluid when natural convection occurs inside the flat display device 230. It is advisable to set the dimensions so that is as small as possible.

In the structure according to this embodiment, the heat generating component 30
5 (a) and 305 (b) only the heat conducting member 206
(A) and 206 (b) are attached, the weight is lighter than the entire fin attachment, and the heat conducting member 206 is attached.
In (a) and 206 (b), the manufacturing process is simple,
The unit cost was lower than that of the radiation fins.

According to the present embodiment, the above-described heat conducting member 2
By using 06 (a) and 206 (b) for the flat display device 230, it has stable and efficient heat radiation means, has a small rise in surface temperature, and regulates the high temperature side of the product operating temperature range. A lightweight product that could not be manufactured could be manufactured at a low cost.

(Embodiment 4) The configuration of the entire apparatus according to Embodiment 4 of the present invention is the same as that of Embodiment 2 shown in FIGS. FIG. 9 is a plan cross-sectional view of an embodiment of only the heat conductive members 206 (a) and 206 (b) which are the changed portions. In the figure, 42
1 is a heating component 405 on the drive circuit board 210 described above.
The pedestal is in close contact with (a) and 405 (b) with an adhesive (not shown) having good thermal conductivity, and has a screw hole at the center. 422 (a), 422 (b), 422
(C), 422 (d), 422 (e), 422 (f),
Reference numeral 422 (g) denotes a heat transfer component that is fixed to the pedestal 421 in the ascending order by the screw 420 and the screw hole.

Heat transfer parts 422 (a), 422 (b), 4
22 (c), 422 (d), 422 (e), 422
(F) and 422 (g) were manufactured so as to have a hollow elliptical cross-section by performing a drilling process for screws at the same time as pressing a 1.5 mm-thick aluminum alloy plate. Heat transfer components 422 of different sizes
(A), 422 (b), 422 (c), 422 (d),
422 (e), 422 (f), and 422 (g) are assembled by sequentially fitting smaller ones into larger ones, and arranging the surface including the major axis of the elliptical cross section substantially parallel to the base 421,
By tightening with the screw 420, the fastening side portion was made to be the overlapped plate portion, and the dimensions were set so that there was a gap between the elliptical cross sections of the opposite side portion.

The heat conductive member 206 manufactured as described above
(A) and 206 (b) have an elastic spring structure, and even if the distance between the housing rear cover 211 and the drive circuit board 210 is changed due to removal due to maintenance, thermal expansion, or the like, sufficient. The housing back cover 211 can be contacted. Therefore, assembling and disassembling can be performed without increasing the thermal resistance, and a stable high-efficiency heat radiation structure can be formed. In this case, the heat conducting members 206 (a) and 206 (b)
In consideration of not obstructing the passage of the fluid when natural convection occurs in the inside of 0, the dimensions should be set so as to minimize the area occupied by the components in the horizontal sectional shape.

In the structure according to this embodiment, the heat generating component 40
5 (a) and 405 (b) only
(A) and 206 (b) are attached, the weight is lighter than the entire fin attachment, and the heat conducting member 206 is attached.
In (a) and 206 (b), the manufacturing process is simple,
The unit cost was lower than that of the radiation fins.

According to this embodiment, the heat conductive member 2
By using 06 (a) and 206 (b) for the flat display device 230, it has stable and efficient heat radiation means, has a small rise in surface temperature, and regulates the high temperature side of the product operating temperature range. A lightweight product that could not be manufactured could be manufactured at a low cost.

Fifth Embodiment The configuration of the entire apparatus according to a fifth embodiment of the present invention is the same as that shown in FIGS. 5 and 6 in the second embodiment, and a description thereof will be omitted. An embodiment of only the heat conduction member which is a changed portion is shown in a plan sectional view of FIG.

In the figure, reference numeral 521 denotes a pedestal which is in close contact with the heat-generating components 505 (a) and 505 (b) on the drive circuit board 210 with an adhesive (not shown) having good thermal conductivity. There is a screw hole in the center. 52
Reference numeral 2 denotes a heat transfer component fixed to the base 521 by the screw 520 and the screw hole.

The heat-transfer component 522 is formed by simultaneously pressing both ends of a 1.5 mm-thick aluminum alloy plate on the same surface side to form a pair of parallel multiple wheels, and at the same time, drilling holes for screws. After being deformed, it is manufactured by heat treatment. Heat conducting members 206 (a), 206 (b)
Was manufactured by assembling a heat transfer component 522 having multiple wheel portions having different sizes, and fastening the heat transfer component 522 to a pedestal 521 with a screw 520.

The heat conduction member 206 manufactured as described above
(A) and 206 (b) have an elastic spring structure, so that even when the distance between the housing rear cover 211 and the drive circuit board 210 is changed due to removal by maintenance, thermal expansion, or the like, it is sufficient. , And can come into contact with the housing rear cover 211. Therefore, assembling and disassembling can be performed without increasing the thermal resistance, and a stable high-efficiency heat radiation structure can be formed. In this case, the heat conducting members 206 (a) and 206 (b)
When natural convection is generated inside 30, the dimensions should be set so as to minimize the parts occupied area of the horizontal cross-sectional shape so as not to block the passage of the fluid.

In the structure according to this embodiment, the heat generating component 50
5 (a) and 505 (b) only
(A) and 206 (b) are attached, the weight is lighter than the entire fin attachment, and the heat conducting member 206 is attached.
In (a) and 206 (b), the manufacturing process is simple, and the unit cost can be suppressed as compared with the radiation fin.

According to this embodiment, the heat conducting member 2
By using 06 (a) and 206 (b) for the flat display device 230, it has stable and highly efficient heat radiation means, has a small rise in surface temperature, and is a factor in regulating the high temperature side of the product operating temperature range. A lightweight product that could not be manufactured could be manufactured at a low cost.

(Embodiment 6) The configuration of the entire apparatus according to Embodiment 6 of the present invention is the same as that of Embodiment 2 shown in FIGS. FIG. 11 is a perspective view of an embodiment in which only the heat conduction members 206 (a) and 206 (b), which are changed portions, are shown as a sixth embodiment.

In the drawing, reference numeral 621 denotes a pedestal which is in close contact with the heat-generating components 605 (a) and 605 (b) on the drive circuit board 610 by an adhesive (not shown) having good heat conductivity. There is a screw hole in the center. 62
Reference numeral 2 denotes a heat transfer component fixed to the base 621 by the screw 620 and the screw hole.

The heat transfer component 622 is formed by pressing a 1.5 mm-thick aluminum alloy plate at the same time as pressing and punching a screw, forming a coil spring, plastically deforming, and then heat-treating. Be produced. The heat conductive members 206 (a) and 206 (b) are manufactured by fastening one end of the heat transfer component 622 to the base 621 with screws 620.

The heat conduction member 206 manufactured as described above
(A) and 206 (b) have an elastic spring structure, so that even when the distance between the housing rear cover 211 and the drive circuit board 210 is changed due to removal by maintenance, thermal expansion, or the like, it is sufficient. , And can come into contact with the housing rear cover 211. Therefore, assembling and disassembling can be performed without increasing the thermal resistance, and a stable high-efficiency heat radiation structure can be formed. In this case, the heat conducting members 206 (a) and 206 (b)
When natural convection is generated inside 30, the dimensions should be set so as to minimize the parts occupied area of the horizontal cross-sectional shape so as not to block the passage of the fluid.

In the structure according to this embodiment, the heat generating component 60
5 (a) and 605 (b) only
(A) and 206 (b) are attached, the weight is lighter than the entire fin attachment, and the heat conducting member 206 is attached.
In (a) and 206 (b), the manufacturing process is simple, and the unit cost can be suppressed as compared with the radiation fin.

According to this embodiment, the heat conducting member 2
By using 06 (a) and 206 (b) for the flat display device 230, it has stable and efficient heat radiation means, has a small rise in surface temperature, and regulates the high temperature side of the product operating temperature range. A lightweight product that could not be manufactured could be manufactured at a low cost.

(Embodiment 7) The configuration of the entire apparatus according to Embodiment 7 of the present invention is the same as that shown in FIGS. FIG. 12 is a perspective view of a seventh embodiment of the present invention in which the rear cover 711 as a changed portion is attached. FIG. 13 shows a cross section taken along the line DD ′ of the housing rear cover 711 in FIG.

701 (a), 701 (b), 701
(C) and 701 (d) are housing components similar to those described above, and are housing corner members 724 (a), 724 (b),
Assembled with 724 (c), 724 (d) and housing rear cover 711, screwed (not shown), image forming panel (not shown), drive circuit board (not shown), heat conductive member (not shown) Is enclosed. Radiation fins 723 are provided integrally with the housing rear cover 711 on the surface of the housing rear cover 711 opposite to the image display panel (not shown). Reference numerals 703 and 704 denote wall-mounted fixing units to be mounted on the wall of the flat display device 730 installation location. 7
Reference numeral 29 denotes a fin tip interval that is a gap interval between the tips of the adjacent heat radiation fins 723.

The radiation fin 723 is a square fin having a uniform square cross section with a height of 10 mm and a thickness of 1.5 mm. The radiation fins 723 have a pitch of 5 mm, and a black body paint is applied on the entire surface in consideration of radiation by radiation.

The flat display device 730 has a structure in which the heat of the housing rear cover 711 is cooled by natural convection of air passing between the flat display device 230 itself and the wall 207 as a heat dissipation structure to the atmosphere. have. For this reason, the flat-panel display 730 includes the wall-mounted unit 703,
By 704, it is fixed to the wall 207 while keeping the distance (40 mm) to the wall 207 constant. This is because the rear cover 7 is located between the flat display device 730 and the wall 207.
11 This is for securing an air flow path for cooling and ensuring an air flow rate of a certain value or more. Further, the heat transfer area between the air and the housing rear cover 711 is increased by the radiation fins 723 formed on the housing rear cover 711, and the heat radiation amount is increased by about 10%. The heat radiation fins 723 have a configuration in which the longitudinal direction is perpendicular to the longitudinal direction of the flat display device 730, so that air does not easily stay between the flat display device 730 and the wall 207. Further, the provision of the radiation fins 723 caused a temperature difference of about 7 ° C. between the base of the radiation fins 723 and the surface closest to the wall.
In the flat display device 730, since the fin tip interval 729 is small and a human finger cannot enter, the regulation on the high temperature side of the product use temperature range can be relaxed. Fin tip spacing 72
9 must be at least 0.5-10 mm,
It is preferable that the heat radiation fin 723 is set in consideration of the heat radiation performance.

The flat display device 730 according to this embodiment is
By the rear cover 711, the product can be manufactured without touching the factors of the regulation on the high temperature side of the product operating temperature range.

(Embodiment 8) The configuration of the entire apparatus according to Embodiment 8 of the present invention is the same as that shown in FIG. FIG. 1 is a sectional view of a housing rear cover 811 which is a changed portion used in the eighth embodiment.
It is shown in FIG. In the figure, reference numeral 811 denotes a housing rear cover, and a heat radiation fin 823 is provided integrally with the housing rear cover 811 on the surface opposite to the image display panel (not shown). Reference numeral 829 denotes a fin tip interval which is a gap interval between the tips of the adjacent heat radiation fins 823.

The heat dissipating fins 823 are claw-shaped fins having a height of 5 mm, a thin portion having a thickness of 3 mm, and a thick portion having a thickness of 6 mm. Black body paint was applied to the entire surface for heat dissipation.

The flat display device 230 has a structure in which the heat of the housing rear cover 811 is cooled by natural convection of the air passing between the flat display device 730 itself and the wall 207 as a heat dissipation structure to the atmosphere. have. For this reason, the flat-panel display 730 includes the wall-mounted unit 703,
By 704, it is fixed to the wall while maintaining a constant distance (40 mm) from the wall 207. This is to secure an air flow path for cooling the housing rear cover 811 between the flat display device 730 and the wall 207, and to secure a certain or more air flow rate. Then, the air and the rear cover 811 are formed by the radiation fins 823 formed on the rear cover 811.
And the heat transfer area increases, and the amount of heat radiation increases by about 10%. The radiation fins 823 extend in the longitudinal direction of the flat display device 7.
By intersecting at right angles to the longitudinal direction of 30, the air is hardly generated between the flat display device 730 and the wall 207. Further, the provision of the radiation fins 823 caused a temperature difference of about 5 ° C. between the base of the radiation fins 823 and the surface closest to the wall. Since the fin tip interval 829 is narrow and a human finger cannot enter, the regulation on the high temperature side of the product operating temperature range can be eased. The fin tip interval 829 needs to be at least 0.5 to 10 mm, and may be set in consideration of the heat radiation performance of the heat radiation fins 823.

With the cover 711 on the rear side of the housing, the flat display device 730 can be made into a product without touching the restriction factors on the high temperature side of the product operating temperature range.

(Embodiment 9) The configuration of the entire apparatus according to Embodiment 9 of the present invention is the same as that of Embodiment 7 and will not be described. FIG. 15 is a cross-sectional view of a housing rear cover 911 which is a changed portion used in the ninth embodiment. In the figure, reference numeral 911 denotes a housing rear cover, and on the surface opposite to the image display panel (not shown), radiation fins 923 are provided integrally with the housing rear cover 911. 929
Is a fin tip interval which is a gap interval between the tips of the adjacent heat radiation fins 923.

The heat dissipating fin 923 is a stepped fin having a stepped cross-sectional shape having a height of 10 mm, a thin portion of 1.5 mm, a thick portion of 3 mm, and a pitch of 6 mm. Black body paint was applied to the entire surface.

The flat display device 730 according to this embodiment.
Has a structure in which the heat of the housing rear cover 911 is cooled by natural convection of the air passing between the flat display device 730 itself and the wall 207 as a heat dissipation structure to the atmosphere. For this reason, the flat display device 730 is separated from the wall 207 (40
mm) is fixed to the wall while maintaining the same. This is to secure an air flow path for cooling the housing rear cover 911 between the flat display device 130 and the wall 207, and to secure a certain or more air flow rate.

Then, the air and the housing rear cover 911 are formed by the radiation fins 923 formed on the housing rear cover 911.
And the heat transfer area increases, and the amount of heat radiation increases by about 10%. The radiation fins 923 extend in the longitudinal direction of the flat display device 7.
By intersecting at right angles to the longitudinal direction of 30, the air is hardly generated between the flat display device 730 and the wall 207. Further, the provision of the radiation fins 923 caused a temperature difference of about 5 ° C. between the root of the radiation fins 923 and the surface closest to the wall. Since the fin tip interval 929 is narrow and a human finger cannot enter, the regulation on the high temperature side of the product operating temperature range can be eased.

With the housing rear cover 711, the flat display device 730 can be made into a product without touching the factors of the regulation on the high temperature side of the product operating temperature range. The fin tip interval 929 needs to be at least 0.5 to 10 mm, and may be set in consideration of the heat radiation performance of the heat radiation fins 923.

(Embodiment 10) The configuration of the entire apparatus according to Embodiment 10 of the present invention is the same as that shown in FIG. FIG. 16 is a cross-sectional view of a housing rear cover 1011 which is a changed portion used in the tenth embodiment. In the figure, reference numeral 1011 denotes a housing rear cover, on the surface opposite to the image display panel (not shown) side, heat radiation fins 1023 are provided integrally with the housing rear cover 1011. Reference numeral 1029 denotes a fin tip interval which is a gap interval between the tips of the adjacent heat radiation fins 1023.

The heat dissipating fins 1023 are semicircular fins having a semicircular cross section with a radius of 2.5 mm, a pitch of 7 mm, and a black body paint is applied to the entire surface in consideration of radiation by radiation.

The flat display device 730 has a structure in which the heat of the housing rear cover 1011 is cooled by natural convection of air passing between the flat display device 730 itself and the wall 207 as a heat dissipation structure to the atmosphere. have. For this reason, the flat-panel display 730 includes the wall-mounted unit 70.
3, 704, it is fixed to the wall 207 while keeping the distance (40 mm) from the wall 207 constant. this is,
This is to secure an air flow path for cooling the housing rear cover 1011 between the flat display device 730 and the wall 207, and to secure a certain or more air flow rate.

Then, the air and the housing rear cover 1 are formed by the radiation fins 1023 formed on the housing rear cover 1011.
The heat transfer area with 011 increases, and the amount of heat radiation increases by about 10%. The heat radiation fins 1023 have a configuration in which the longitudinal direction is perpendicular to the longitudinal direction of the flat display device 730 so that air does not easily stay between the flat display device 730 and the wall 207. In addition, the radiation fin 1
The provision of 023 caused a temperature difference of about 1.5 ° C. between the root of the radiation fin 1023 and the surface closest to the wall. Since the fin tip interval 1029 is narrow and human fingers cannot enter, the regulation on the high temperature side of the product operating temperature range could be relaxed. The fin spacing 1029 must be at least 0.5 to 10 mm.
3 should be set in consideration of the heat radiation performance.

The flat display device 730 according to this embodiment is
By the rear cover 711, the product can be manufactured without touching the factors of the regulation on the high temperature side of the product operating temperature range.

(Embodiment 11) The configuration of the entire apparatus according to Embodiment 11 of the present invention is the same as that shown in FIG. FIG. 1 is a sectional view of a housing rear cover 1111 which is a changed portion used in the eleventh embodiment.
FIG. In the figure, reference numeral 1111 denotes a housing rear cover, on the surface opposite to the image display panel (not shown), heat radiation fins 1123 are provided integrally with the housing rear cover 1111. 1129 is an adjacent radiation fin 112
3 is a fin tip interval which is a gap interval at the tip of No. 3.

The radiating fin 1123 is a triangular fin having a height of 2 mm and a base of 3 mm and a triangular cross section, a pitch of 3 mm, and a black body paint is applied on the entire surface in consideration of radiation by radiation. .

The flat display device 730 has a structure in which the heat of the housing rear cover 1111 is cooled by natural convection of the air passing between the flat display device 730 itself and the wall 207 as a heat dissipation structure to the atmosphere. have. For this reason, the flat-panel display 730 includes the wall-mounted unit 70.
According to 3, 704, it was fixed to the wall 207 while keeping the distance (40 mm) to the wall 207 constant. This is because the housing back cover 11 is located between the flat display device 730 and the wall 207.
11 This is for securing an air flow path for cooling and ensuring an air flow rate of a certain value or more. The heat dissipating fins 1123 formed on the housing rear cover 1111 increase the heat transfer area between the air and the housing rear cover 1111 and reduce the heat radiation amount by about 10%.
%It has increased. The heat radiation fins 1123 have a configuration in which the longitudinal direction is perpendicular to the longitudinal direction of the flat display device 730 so that air does not easily stay between the flat display device 730 and the wall 207. Further, the provision of the radiation fins 1123 allows the radiation fins 1123 to be provided.
A temperature difference of about 2 ° C. was generated between the root of the surface and the surface closest to the wall. Since the fin tip space 1129 is narrow and a human finger cannot enter, the flat display device 730 according to the present embodiment
The regulations on the high temperature side of the product operating temperature range could be relaxed. The fin tip interval 1129 is at least 0.5 to 10
mm, and may be set in consideration of the heat radiation performance of the heat radiation fins 1123.

By the rear cover 711 of the housing, the flat display device 730 can be made into a product without touching the restriction factors on the high temperature side of the product use temperature range.

(Embodiment 12) The configuration of the entire apparatus according to Embodiment 12 of the present invention is the same as that shown in FIGS. FIG. 18 is a perspective view of an embodiment in which a housing rear cover 1211 which is a changed part from the second embodiment is attached as an twelfth embodiment.

In the figure, 1201 (a), 1201
(B), 1201 (c), and 1201 (d) are housing components similar to those described above, and are housing corner members 1224.
(A), 1224 (b), 1224 (c), 1224
(D) and the housing rear cover 1211 are assembled and screwed (not shown) to enclose an image forming panel (not shown), a drive circuit board (not shown), and a heat conducting member (not shown). . On the surface of the housing rear cover 1211 opposite to the image display panel (not shown), a heat radiation fin 1223 is provided integrally with the housing rear cover 1211. 1203,1
Reference numeral 204 denotes a wall-mounted fixing unit for attaching to the wall of the flat display device 1230 installation place. Heat radiation fin 1
Reference numeral 223 denotes a fin having a height of 10 mm and a thickness of 2 mm and a rectangular cross section. The fin was coated with a black body paint in consideration of heat radiation by radiation.

The flat display device 1230 has a structure as a heat radiating structure to the atmosphere, in which the heat of the housing rear cover 1211 is cooled by natural convection of the air passing between the flat display device 1230 itself and the wall 207. ing. For this reason, the flat-panel display device 1230 is
3, 1204, fixed to the wall 207 while keeping the distance (40 mm) from the wall constant. This is because the rear cover 121 is located between the flat display device 1230 and the wall 207.
(1) To secure an air flow path for cooling, and to secure an air flow rate equal to or higher than a certain value. The heat dissipating fins 1223 formed on the housing rear cover 1211 increase the heat transfer area between the air and the housing rear cover 1211, and further consider the characteristics of natural convection utilizing buoyancy due to expansion of the air. Adopts an upper channel enlarged arrangement shape. That is, the heat radiation fins 1223 include straight fins having no center bend, and bent fins arranged on both sides thereof and bent from the middle. The left and right bent fins
The lower straight portions 1223 (a) and 1223 (b) and the upper inclined portions 1223 (c) and 1223 that follow from the middle.
(D), left and right inclined portions 1223 (c), 12
23 (d) are widened upward, and one of the inclined portions 1223 (c) and the other of the inclined portions 1223.
(D) are arranged so as to be inclined so that they are almost parallel to each other. This increases the amount of heat radiation by about 12%. The radiating fins 1223 extend in the longitudinal direction of the flat display device 1230.
Are perpendicular to the longitudinal direction of the flat panel display device 1230 and the wall 207 is less likely to cause stagnation of air. In addition, the provision of the radiating fins 1223 causes a temperature difference of about 10 ° C. between the base of the radiating fins 1223 and the surface closest to the wall, which can ease the regulation on the high temperature side of the product operating temperature range. did it. The flat display device 1230 is provided by the housing rear cover 1211.
Was able to make a product without touching the regulatory factors on the high temperature side of the product operating temperature range.

[0102]

According to the present invention, in a flat display device, stable high heat radiation efficiency inside and outside the flat display device is realized at low cost and light weight, and the temperature of the surface of the flat display device is reduced. And the regulations on the high temperature side of the product operating temperature range were relaxed.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating an outline of a flat panel display according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA ′ of the flat panel display device shown in FIG.

FIG. 3 is a perspective view illustrating an outline of a heat conducting member mounted on the flat panel display according to the first embodiment of the present invention.

FIG. 4 is a sectional view taken along line B-B 'of FIG.

FIG. 5 is a perspective view illustrating an outline of a flat panel display according to a second embodiment of the present invention.

FIG. 6 is a sectional view taken along line C-C 'of FIG.

FIG. 7 is a plan sectional view of a heat conductive member mounted on a flat panel display according to a second embodiment of the present invention.

FIG. 8 is a plan sectional view of a heat conductive member mounted on a flat panel display according to Embodiment 3 of the present invention.

FIG. 9 is a plan sectional view of a heat conductive member mounted on a flat panel display according to Embodiment 4 of the present invention.

FIG. 10 is a plan sectional view of a heat conducting member mounted on a flat panel display according to Embodiment 5 of the present invention.

FIG. 11 is a perspective view showing an outline of a heat conducting member mounted on a flat panel display according to Embodiment 6 of the present invention.

FIG. 12 is a perspective view illustrating an outline of a heat radiation member mounted on a rear cover of a housing of a flat panel display according to a seventh embodiment of the present invention.

13 is a sectional view of the rear cover of the housing shown in FIG. 12, taken along the line DD '.

FIG. 14 is a plan sectional view of a heat dissipating member mounted on a rear cover of a housing of a flat panel display according to Embodiment 8 of the present invention.

FIG. 15 is a plan sectional view of a heat dissipating member mounted on a rear cover of a housing of a flat panel display according to Embodiment 9 of the present invention.

FIG. 16 is a plan sectional view of a heat radiating member mounted on a rear cover of a flat display device according to a tenth embodiment of the present invention.

FIG. 17 is a plan sectional view of a heat radiating member mounted on a rear cover of a flat display device according to an eleventh embodiment of the present invention.

FIG. 18 is a perspective view illustrating an outline of a heat radiating member mounted on a rear cover of a housing of a flat panel display according to Embodiment 12 of the present invention.

FIG. 19 is a longitudinal sectional view of a conventional flat display device.

[Explanation of symbols]

1: body, 4: heat dissipation component, 6: graphite film,
7: silicone sheet, 11: back surface of main body, 42: fin, 43: outer surface of bottom, 44: side, 50: adhesive layer, 7
0: housing, 100: plasma display panel, 14
0: External heat radiation member, 101 (a), 101 (b), 10
1 (c), 101 (d), 201 (a), 201
(B), 201 (c), 201 (d), 701 (a),
701 (b), 701 (c), 701 (d), 1201
(A), 1201 (b), 1201 (c), 1201
(D): housing parts, 102, 202: image forming panel,
105 (a), 105 (b), 205 (a), 205
(B), 305 (a), 305 (b), 405 (a),
405 (b), 505 (a), 505 (b), 605
(A), 605 (b): heat generating component, 110, 210: drive circuit board, 111, 211, 711, 811, 91
1,1011,1111,1211: Back cover of housing,
124 (a), 124 (b), 124 (c), 124
(D), 224 (a), 224 (b), 224 (c),
224 (d), 724 (a), 724 (b), 724
(C), 724 (d), 1224 (a), 1224
(B), 1224 (c), 1224 (d): housing corner members, 130, 230, 730, 1230: flat display device, 103, 104, 203, 204: wall fixed unit, 106 (a), 106 (B), 206 (a),
206 (b): heat conductive member, 107, 207: wall, 12
0, 220, 320, 420, 520, 620: screws,
121, 221, 321, 421, 521, 621: pedestal, 122 (a), 122 (b), 122 (c), 12
2 (d), 122 (e), 122 (f), 122
(G), 122 (h), 222 (a), 222 (b),
222 (c), 222 (d), 222 (e), 222
(F), 222 (g), 222 (h), 322 (a),
322 (b), 322 (c), 322 (d), 322
(E), 322 (f), 322 (g), 322 (h),
422 (a), 422 (b), 422 (c), 422
(D), 422 (e), 422 (f), 422 (g),
522, 622: heat transfer parts, 723, 823, 923,
1023, 1123, 1223: radiation fin, 160
(A), 160 (b), 260 (a), 260 (b):
Bezel, 180 (a), 180 (b), 280 (a),
280 (b): heat insulating material, 729, 829, 929, 10
29,1129: Fin tip spacing.

Claims (19)

[Claims] 1. A flat display device having means for transferring heat of a heat-generating component inside a housing accommodating an image forming panel to the housing, wherein a means for defining a distance from a rear wall outside the housing. And a heat insulating means between the rear cover of the housing and the bezel. 2. A flat display device according to claim 1, wherein said image forming panel is a surface electron emission type display panel. 3. The flat display device according to claim 1, wherein the means for defining the distance is a wall-mounted fixing unit of the flat display device. 4. A flat display device according to claim 1, wherein said heat insulating means is provided with a hole in a housing component. 5. The flat display device according to claim 1, wherein the heat insulating means is a heat insulating material formed of glass wool. 6. A flat display device according to claim 1, wherein said heat insulating means is a heat insulating material made of a porous substance. 7. The flat display device according to claim 1, wherein a heat conducting member used as the means for transferring heat has elasticity. 8. The flat panel display according to claim 1, wherein the housing has heat radiation fins, and the heat radiation fins have the same cross-sectional shape on all surfaces normal to the direction of gravity. apparatus. 9. The flat display device according to claim 1, wherein the housing has a heat radiation fin, and the heat radiation fin has a shape of an enlarged upper channel. 10. The flat display device according to claim 8, wherein said cross-sectional shape is a quadrangle. 11. The flat display device according to claim 8, wherein said cross-sectional shape is a claw type. 12. The flat display device according to claim 8, wherein the cross-sectional shape is a stepped shape. 13. The flat display device according to claim 8, wherein said cross-sectional shape is a semicircular shape. 14. The flat display device according to claim 8, wherein said cross-sectional shape is triangular. 15. The flat panel display according to claim 8, wherein a black body paint is applied to the radiation fins. 16. The cross-sectional area on all surfaces of the wall-mounted fixing unit normal to the direction of gravity is 1 to 3000 mm.
4. The flat display device according to claim 3, wherein the range is ² . 17. The cross-sectional area on all surfaces having the same normal line as the normal direction of the wall of the wall-mounted fixing unit is 1 to 60.
4. The flat panel display according to claim 3, wherein the distance is within a range of 00 mm ² . 18. The flat panel display device according to claim 8, wherein the heat radiation fin has a fin tip interval of 0.5 to 10 mm. 19. The flat display device according to claim 1, wherein a heat conducting member used as the means for transmitting heat is attached only to the heat generating component.