KR20090040687A - Flat display device and cooling apparatus for the same - Google Patents

Abstract

A flat panel display device and a cooling unit of the flat panel display device are provided to improve the cooling efficiency and the degree of freedom in designing a product. A front cover(3) supports the front of a flat panel display module(2). A back cover(4) supports the rear of the flat panel display module. An oblique face(8) of the back cover side is inclined toward the center of the flat panel display module from the rim of the back cover. A tangential fan(7) is arranged inside the oblique face and is supported by a supporting unit. The supporting part is extended from the flat panel display module, front cover or back cover. The installation angle of the tangential fan is identically varied at the same angle as that of the oblique face.

Description

Flat display device and cooling apparatus for the flat display device

1 is a perspective view of a flat panel display device according to an embodiment of the present invention.

2 is an exploded perspective view of the flat panel display device of the present invention.

3 is a rear perspective view of the cross flow fan.

4 is a cross-sectional view taken along the line II ′ of FIG. 1.

5 is a perspective view of a flat display device cooling apparatus according to a second embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

2: flat panel display module 7: cross flow fan

31: first fixing portion 32: variable fastening portion

33 support part 34 second fixing part 35 fastening guide part

Korean Patent Application No. 10-2005-0105177 (cited invention)

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat panel display device, and more particularly, to a cooling device for a flat panel display device for quickly and stably discharging high heat inside the flat display device to the outside. More specifically, the present invention relates to a cooling device of a flat panel display device in which an installation structure of a fan is improved so that more heat is radiated to the outside quickly and without leakage in a low noise state.

Unlike general cathode ray tubes, a flat panel display device is a device in which an emission state of each pixel is different from each other by a driving circuit arranged in a matrix form to form an image as a whole. Unlike the cathode ray tube, such a flat panel display device has a small volume, so that the space occupied in a narrow indoor space is small, and thus the use of the flat display device has been increased. The flat panel display module applied to the flat panel display device includes a liquid crystal display (LCD), a field emission display (FED), and a plasma display panel (PDP) according to a driving method thereof. And an electro-luminescence (EL) display device. Although these display modules are small in volume and can be used for convenience of the user, they are integrated in a narrow flat space, so that heat generated during driving of the module is a major challenge.

In particular, in the PDP device, high temperature heat is generated due to the discharge phenomenon of the discharge gas, electrical components, and the like, and if such heat is not released, the PDP device acts as a major factor causing malfunction or failure of the device. Of course, other flat panel display modules also have thermal dissipation, which limits the device's performance.

In view of such a problem, the applicant of the present invention has previously proposed the Republic of Korea Patent Application No. 10-2005-0105177 as a cited invention. The cited invention installs a cross flow fan inside the top of the flat panel display device, and allows the hot air to radiate heat through the cross flow fan. By applying such a conventional method, it is possible to obtain a high noise amount of low noise, and to achieve a remarkable improvement in cooling performance.

However, since the installation angle of the crossflow fan is not only important, but the inside of the flat panel display device is narrow, it is difficult to install the crossflow fan. In other words, since the cross flow fan transports the air in the cross direction, the air flow rate and the noise generation degree are different even if the air flowing into the cross flow fan and the air flowing out of the cross flow fan vary slightly depending on the surrounding structure. In addition, since the flat panel display apparatus has various sizes and shapes, it is also difficult to design the crossflow fan assembly according to the case.

The present invention is proposed in order to overcome the above problems, it is possible to freely change the installation angle of the crossflow fan, to propose a flat display device and a cooling device of the flat display device that the user can easily implement the optimal installation state do.

In addition, the present invention proposes a flat display device and a cooling device for a flat display device, which can be easily responded to flat display devices having various sizes and various shapes.

In addition, the present invention proposes a flat display device and a cooling device for a flat display device, which can design a flat display device without considering the heat dissipation, thereby increasing the degree of freedom in product design.

A flat panel display device according to the present invention includes a flat panel display module; A front cover which supports the front of the flat panel display module; A back cover supporting a rear of the flat panel display module; A back cover side inclined surface formed to be inclined toward a center of the flat panel display module toward the rear from at least one edge portion of the back cover; And a cross flow fan provided inside the back cover side inclined surface, wherein the cross flow fan is supported by a flat display module or a predetermined support portion extending from the front cover or the back cover, and an installation angle of the cross flow fan is the back cover. The installation angle is variable so as to be the same as the side inclined surface.

A cooling device of a flat panel display device according to the present invention includes a flat display module, a cover which protects the flat display module and is formed with at least one rim inclined, a suction port formed at one side of the cover to suck external air, and the inclined surface. A cross flow fan disposed inside the edge portion to discharge hot air through the inclined edge portion; The cross flow fan includes a motor, a cross flow fan impeller connected to a drive shaft of the motor, and a housing accommodating the cross flow fan impeller, and the flat display module or the cover provides a support for supporting the cross flow fan. The discharge side of the housing is formed to be inclined to correspond to the inner surface of the inclined edge portion, and the inclined installation angle of the discharge side of the housing is varied to an installation angle corresponding to the inclined edge portion of the cover. Is characterized in that it has a fastening structure free to rotate with respect to the cover.

According to the present invention, it is possible to obtain the best cooling efficiency even when other components are in the same state, and according to the type, size, shape, and design of the device, there is an advantage of easily implementing the optimum cooling efficiency.

Hereinafter, with reference to the drawings will be described in detail a specific embodiment of the present invention. However, the spirit of the present invention is not limited to the accompanying embodiments, and those skilled in the art who understand the spirit of the present invention can easily add, change, delete, add, etc. other components included in the scope of the same idea. It may be proposed, but this is also included within the scope of the present invention.

1 is a perspective view of a flat panel display device according to an exemplary embodiment of the present invention.

Referring to FIG. 1, the flat display device 1 of the present invention includes a flat display module 2, a front cover 3 for supporting and protecting the front of the flat display module 2, and a flat display module ( A back cover 4 is included to support and protect the rear of 2). In addition, a back cover side opening portion 5 through which hot air inside the flat panel display device 1 is discharged is formed at an upper edge of the back cover 4.

The flat panel display module 2 may be a module in which pixels are operated in various forms of metrics such as a liquid crystal display, a field emission display, a plasma display panel, and an electro luminescence display. The PDP module in which high heat is generated may be exemplified.

The front cover 3 and the back cover 4 are an article that partitions the exterior and the interior and protects the components mounted therein while the flat display module 2 is accommodated in the interior space as a whole. Although the cover 3 and the back cover 4 are provided as separate items and described in the aspect in which the two are combined, it may be provided in any other form. For example, the front cover 3 and the back cover 4 may be provided as a single article, and the back cover 4 may be provided as a plurality of parts. However, it is natural that the front cover 3 protects the front of the flat display device and the back cover 4 is used for protecting the rear of the flat display device. In addition, a predetermined interval is provided between the inner surface of the back cover 4 and the plurality of heating parts provided on the rear surface of the flat display module 2, and air flows through the gaps to provide the heating parts. Naturally, after cooling, the liquid is discharged through the back cover side opening part 5.

The operation of the cooling apparatus of the present invention will be briefly described with reference to the perspective view of the flat panel display apparatus described above.

When the flat panel display device 1 is operated, a lot of heat is generated in the flat panel display module 2. In particular, the heat generated from the heat generating parts of the rear surface of the flat panel display module 2 is cooled by air introduced from the outside. After that, the heated air is discharged to the outside through the back cover side opening 5 after moving upward. Since the air inside the flat panel display apparatus may be discharged by the natural convection in which the heated air moves upward, the cooling effect may be further enhanced. In order to maximize the cooling effect due to natural convection as described above, the air introduced into the flat display apparatus 1 is introduced into the inside through the lower end of the flat display apparatus 1, thereby the flat display module 2 It is desirable to further improve the cooling efficiency by passing through the rear of the whole.

In addition, the back cover side opening 5 is provided on the inclined portion of the edge of the back cover 4 to be discharged as it is in the direction in which the hot air flows (upward direction), the flow of hot air is more smoothly There is this.

Of course, since the front surface of the flat panel display module 2 is exposed to the outside, the heat generated from the front surface of the flat panel display module 2 can be quickly released by the outside air and natural convection.

2 is an exploded perspective view of the flat panel display device of the present invention. However, in order to more centrally express the cooling device of the flat panel display device, the flat panel display module 2 and the front cover 3 are shown in a state of being attached to each other.

1 and 2, a cross flow fan 7 is disposed at an interval between an upper portion of the back cover 4 and an upper portion of the front cover 3, and a discharge port 20 of the cross flow fan 7. Is aligned with the back cover side opening 5. Therefore, the hot air discharged to the outside by the operation of the crossflow fan 7 can be discharged to the outside through the back cover side opening 5 without disturbing the flow path.

The configuration of the back cover 4 will be described in detail. In general, the edge portion of the back cover 4 provides a back cover side inclined surface 8 as a shape in which the edge portion inclines toward the center thereof. As such, the back cover 4 is formed to be inclined backward, so that the rear part of the device is not visible when the flat display device 1 is observed from the front, giving the user a beautiful aesthetic feeling of flatness, and enhancing the quality of the product. In order to make the device compact, almost all flat panel display devices are manufactured in this form. Of course, the back cover side opening portion 5 as described above is provided in a plurality of slit shapes on the upper surface of the back cover side inclined surface 8 so that the high temperature air therein is easily discharged.

In addition, the installation angle of the crossflow fan 7 is provided to be changed in accordance with the specifications of the flat panel display device. To this end, both sides of the crossflow fan 7 are provided with a predetermined fastening structure provided in a state capable of changing the installation angle of the crossflow fan. The fastening structure of the cross flow fan is described in detail with reference to the back perspective view of the cross flow fan shown in FIG.

Referring to FIG. 3, the crossflow fan 7 includes a crossflow fan impeller 10 provided in a lengthwise direction of the back cover 4 and a crossflow fan impeller 10 at predetermined intervals of the crossflow fan impeller 10. ) Is included in the transverse direction and a circular plate 11 for reinforcing the strength of the crossflow fan impeller 10. A drive shaft and a motor 14 for rotating the drive shaft are connected to one end of the crossflow fan impeller 10.

In addition, the crossflow fan impeller 10 is entirely accommodated in the housing 18 to guide the flow of air during rotation of the crossflow fan impeller 10, wherein the housing 18 is a crossflow fan impeller 10. Scroll 12 is formed on one side spaced forward and a stabilizer 13 is formed on the other side spaced apart to stabilize the flow of air. The scroll 12 lies in front of the crossflow fan impeller 10, and the stabilizer 13 lies behind the crossflow fan impeller 10.

In more detail with respect to the housing, the housing 18 is provided in a shape in which the upper side and the lower side are opened as a whole, the crossflow fan impeller 10 is inserted into the lower open space to suck air from the lower side A space is provided, and the upper open space provides a discharge port 20 through which the blown air is discharged.

In addition, the housing 18 includes a scroll 12 placed at a position spaced apart in the front of the crossflow fan impeller 10 and a stabilizer 13 placed at a position spaced at a predetermined distance in the rear to stabilize the flow of air. Included. In addition, the end of the scroll 12 is smoothly bent to provide a diffuser 19 as a shape that is bent forward. The diffuser 19 serves to diffuse the discharged air to reduce the flow resistance and noise of the air.

Here, the housing upper surface portion 9 is provided in a shape inclined to the rear at a predetermined angle in the same manner as the back cover side inclined surface (8). The housing upper surface portion 9 refers to the upper end of the cross flow fan 7. In this way, the upper surface portion 9 of the housing is provided to be inclined as a whole, so that the installation space of the crossflow fan 7 can be more compactly provided to correspond exactly to the inner surface of the back cover side inclined surface 8, and the crossflow fan 7 There is no resistance to the flow rate of air discharged from

In order to prevent the pneumatic loss, reduce the flow noise, and reduce the current consumption, the upper surface portion 9 of the housing and the back cover side inclined surface 8 are placed at the correct installation angle. It is further provided with a predetermined structure for changing the installation angle of), hereinafter will be described in detail with respect to the crossflow fan fastening structure.

First, the crossflow fan 7 is installed in the support part 33 extending backward from the flat panel display module 2. In detail, the support part 33 is provided with a second fixing part 34 and a fastening guide part 35, and corresponding to the support part 33, each of the opposite ends of the housing 18 is provided with a first one. A fixed portion 31 and a variable fastening portion 32 are provided.

The fastening relationship of each component mentioned above is demonstrated. First, when the first fixing part 31 and the second fixing part 34 are aligned, the fastening member 36 is inserted to fix the crossflow fan 7, and the fixing parts 31 and 34 are fixed. The crossflow fan 7 is rotated by an appropriate amount so that the upper surface portion 9 and the back cover side inclined surface 8 of the housing are placed at the same installation angle. At this time, even if the cross-flow fan 7 is rotated by a predetermined angle around the fixing part 31, 34 so that the variable fastening part 23 and the fastening guide part 35 can be fastened to each other, the fastening guide part 35 is preferably provided in the shape of an arc around the fixing portion 34.

The variable fastening part 32 may be provided as a pampnut fastened to the cross flow fan 7, or may be provided in the form of a hole provided through a predetermined position of the cross flow fan.

By the fastening structure as described above, it can be clearly understood that the crossflow fan can be installed at the installation angle of the crossflow fan, in particular, at the same installation angle as the back cover side inclined surface 8.

As such, the cross flow fan 7 is installed at the same installation angle as that of the back cover side inclined surface 8, so that the air discharged through the diffuser 19 can be smoothly discharged to the outside, and the cross flow fan 7 and Since the gap of the back cover 4 is eliminated, the leakage of air is suppressed, and the fall of the cooling loss which arises as the leaked air flows back into the inside of a flat-panel display apparatus can be suppressed.

Furthermore, when designing a flat panel display device, it is not necessary to design a back cover and other structures in consideration of the installation state of the cross flow fan, and since the cross flow fan only needs to consider the installation angle in the final installation stage, the back cover is redesigned. And inconvenience of production can be eliminated. Furthermore, the crossflow fan does not need to manufacture a new article according to the deformation of the back cover, but since the same crossflow fan is manufactured in large quantities as a single article, only the mounting angle is changed as necessary, thereby reducing the manufacturing cost. You can get it.

FIG. 4 is a cross-sectional view taken along line II ′ of FIG. 1 and with reference to FIG. 4, the operation of the discharge side of the cooling apparatus of the flat display device according to the present invention will be described in detail.

Referring to FIG. 4, the high temperature air inside the flat panel display device is moved upward by the clockwise rotation of the crossflow fan 7, and is discharged through the discharge port 20 of the crossflow fan 7. Furthermore, since the discharge port 20 is provided in alignment with the back cover side opening 5, the hot air can be smoothly discharged.

Here, as described above, the upper surface portion 9 of the housing may be installed at an installation angle that exactly corresponds to the back cover side inclined surface 8 by the crossflow fan fastening structure.

Therefore, since the air discharged through the discharge port 20 provided in the upper surface portion 9 of the housing is discharged to the outside directly through the back cover side opening 5, the heat dissipation efficiency is further improved. In other words, the air discharged through the discharge port 20 has an advantage that the risk of backflowing into the inside of the planar display device is significantly reduced.

In order to prevent backflow of the discharged air, a predetermined sealing member 50 may be further interposed in the gap between the upper surface portion 9 of the housing and the back cover side opening portion 5. The sealing member 50 is installed around the upper edge portion 9 of the housing, that is, the upper edge portion of the crossflow fan housing, and has an effect of shielding the discharged air that may leak through the edge portion.

5 is a perspective view of a flat display device cooling apparatus according to a second embodiment of the present invention.

Referring to FIG. 5, a variable fastening portion 41 having an arc shape is provided at both end portions of the cross flow fan 7, and a fastening guide portion 42 is provided as a shape of a hole in the support portion 33. That is, in the first embodiment, although the support portion 33 is provided with an arc-shaped fastening guide portion, there is a difference only in that provided in the arc-shaped cross flow fan. Although there is no description, the second fixing part 34, the first fixing part 31, and the fastening member 43 are the same as those of the first embodiment, and the detailed description thereof is omitted, and the parts not described in detail are The description of the first embodiment is used as it is.

The present invention may further include various embodiments in addition to the above-described preferred embodiments.

First, the support part is provided in the flat display module, and is described as any structure that protrudes backward from the flat display module, but is not limited thereto, and may be provided as any structure protruding from the front cover or the back cover. . However, since the article for exhausting the heat generated during the operation of the flat panel display module is a cross flow fan, the cross flow fan is preferably placed in a position defined with respect to the flat display module in order to allow high heat to be introduced quickly. Preferably, the support unit is installed in the display module.

As another example, a predetermined letter or number may be displayed in advance at the side end and the support of the crossflow fan at the time of injection. Such a mark may be a numerical value of an indication or installation angle informing the installation position of the crossflow fan in advance. It may be an informative mark. For example, when there are "A" and "I" types of flat panel display devices, they are displayed at the pre-selected installation angle for each type of device. The alignment guide and the fastening guide portion is aligned by using a screw or the like.

As another example, in place of the arc-shaped fastening guide part 35 and the variable fastening part 41, the fastening angle of the crossflow fan is determined for each flat display device in advance, and a hole is drilled only at the determined location so that the worker is in a predetermined position. It may be fastened using a fastening member.

According to the present invention, it is possible to freely change the installation angle of the cross flow fan, it is possible to easily implement the optimum installation state, there is an advantage that can achieve the best cooling efficiency, without considering the factor of heat dissipation flat display Since the apparatus can be installed, the degree of freedom in product design can be increased.

Claims (5)

Flat panel display modules; A front cover which supports the front of the flat panel display module; A back cover supporting a rear of the flat panel display module; A back cover side inclined surface formed to be inclined toward a center of the flat panel display module toward the rear from at least one edge portion of the back cover; And Includes a cross flow fan provided inside the back cover side inclined surface, And the cross flow fan is supported by a flat display module or a predetermined support portion extending from the front cover or the back cover, and the installation angle of the cross flow fan is variable so that the installation angle is the same as the inclined surface of the back cover side. The method of claim 1, The fastening structure between the support portion and the cross flow fan has two fastening positions, one fastening position is fixed in position, and the other fastening position is variable in position. The method of claim 1, The crossflow fan is provided with a first fixing part and a variable fastening part; The support portion is provided with a second fixing portion aligned with the first fixing portion, a fastening guide portion aligned with the variable fastening portion; The first fixing part and the second fixing part are fastened to each other by a fastening member so as not to be mutually movable, The variable fastening part and the fastening guide part, either one of which is provided in an arc shape, the flat display device that the position of each other is variable. The method of claim 3, wherein The arc-shaped flat display device having an arc shape centered on a fixed position of the first fixing part and the second fixing part. A flat display module, a cover that protects the flat display module and is formed by inclining at least one edge portion, a suction inlet formed on one side of the cover to suck external air, and a high temperature through the inclined edge portion by being placed inside the inclined edge portion. A cross flow fan for discharging air is included; The crossflow fan includes a motor, a crossflow fan impeller connected to a drive shaft of the motor, and a housing accommodating the crossflow fan impeller, The flat panel display module or the cover is provided with a support for supporting the cross flow fan, The discharge side of the housing is formed to be inclined corresponding to the inner surface of the inclined edge portion, And the housing has a fastening structure freely rotatable with respect to the cover so that the inclined installation angle of the discharge side of the housing is changed to an installation angle corresponding to the inclined edge portion of the cover.

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