KR102480067B1 - Display device equipped with cooling device using fan - Google Patents

Abstract

A display device equipped with a cooling device using a fan capable of quickly cooling the display module by bringing external air into direct contact with the display module and quickly discharging the heat emitted from the display module to the outside to prevent degradation of display performance. Initiate.
A display device equipped with a cooling device using a fan according to an embodiment of the present invention includes a housing, a display module accommodated in the housing and having a front surface exposed to the outside, and a rear surface of the display module installed in the housing along the front and rear directions of the display module. and a heat dissipation fan configured to inject external air and directly spray it to the rear surface of the display module.

Description

Display device equipped with cooling device using fan}

The present invention relates to a display device equipped with a cooling device using a fan capable of effectively lowering the temperature of a liquid crystal display panel.

A display device is a display device that displays an image using electrical and optical characteristics of liquid crystals, and has the advantage of being smaller in volume and lighter in weight than a cathode ray tube (CRT), such as portable computers, communication devices, It is widely used in various fields such as television, industrial equipment and aerospace industry.

In general, a display device is composed of a housing and a liquid crystal module accommodated inside the housing.

The liquid crystal module is composed of a liquid crystal panel, a driving circuit unit that controls the liquid crystal panel, a light source unit that radiates light toward the liquid crystal panel, an optical unit that diffuses light from the light source unit, and a frame accommodating them therein.

Meanwhile, in a conventional display device, a predetermined heat dissipation space is formed between a liquid crystal module and a housing accommodating the liquid crystal module, and a plurality of vent holes communicating with the heat dissipation space are formed in the housing to maintain the liquid crystal module at a constant temperature.

That is, the conventional display device maintains the temperature of the liquid crystal panel at a constant temperature through heat exchange between heat emitted from the liquid crystal module and external air.

However, since the air circulation between the inside and outside of the housing cannot be properly performed in the conventional display device, the heat emitted from the liquid crystal module is not discharged to the outside of the housing and cannot help but remain inside the housing, which is why the liquid crystal module There is a problem in that the performance of the liquid crystal panel is degraded or the liquid crystal panel is deformed due to an increase in the temperature of the liquid crystal panel.

In addition, a conventional display device has a wide heat dissipation space so that sufficient air convection can be achieved between the liquid crystal module and the housing.

Due to this, the conventional display device has a problem in that the overall volume is increased.

The present invention has been made to solve the above problems, and an object of the present invention is to quickly cool the display module by directly contacting external air to the display module, and quickly dissipate heat emitted from the display module to the outside. To provide a display device equipped with a cooling device using a fan capable of preventing deterioration of display performance.

The object of the present invention is not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the following description.

A display device equipped with a cooling device using a fan according to an embodiment of the present invention for solving the above problems is a housing; a display module accommodated in the housing and having a front side exposed to the outside; and a heat dissipation fan installed in the housing, disposed at the rear of the display module along the front and rear directions of the display module, and configured to introduce external air and directly spray it to the rear surface of the display module.

The housing may include a front frame accommodating the display module therein, surrounding the circumference of the display module, and having front and rear openings; and a mid cover coupled to a rear surface of the front frame to protect the display module accommodated in the front frame from the outside and to which the heat dissipation fan is coupled.

The mid cover communicates a rear space of the display module with a rear space of the mid cover, is disposed coaxially with the heat dissipation fan, and includes an air inlet through which the external air flowing by the heat dissipation fan is introduced; and an air discharge hole disposed at a position different from the air inlet hole to communicate the rear space of the display module and the rear space of the mid cover, and through which air accommodated in the rear space of the display module is discharged.

The housing may further include a back cover coupled to a rear surface of the mid cover to protect the heat dissipation fan from the outside.

The back cover may include an air flow hole that communicates a rear space of the mid cover with an external space.

The mid cover 112 is disposed inside the air outlet hole 1122 in a lattice shape, and absorbs heat in the air while being in contact with the air passing through the air outlet hole 1122. 1123), and the back cover 113 is disposed inside the air flow hole 1131 in a lattice form, and while being in contact with the air passing through the air flow hole 1131, heat in the air is removed. A second heat dissipation net 1132 for absorbing may be further included.

The back cover may further include a filter configured to filter the external air introduced into the air flow hole.

A heat dissipation frame disposed between the rear surface of the display module and the front surface of the mid cover and configured to guide the external air passing through the mid cover to the rear surface of the display module by the heat dissipation fan. .

The heat dissipation frame may include a heat dissipation hole communicating with the air inlet hole, and the heat dissipation hole may have a larger plane area than the air inlet hole.

One surface of the heat dissipation frame is in contact with the rear surface of the display module, and the other surface of the heat dissipation frame is in contact with the front surface of the mid cover, so that heat generated in the display module may be transferred to the mid cover.

The heat dissipation frame may be formed of a thermally conductive material.

The heat dissipation fan and the heat dissipation frame may be disposed in plurality.

The heat dissipation fan may include a first heat dissipation fan disposed on one side of the display module along the left and right directions; and a second heat dissipation fan disposed on the other side along the left and right directions of the display module, wherein the heat dissipation frame includes: a first heat dissipation frame disposed opposite to the first heat dissipation fan along the front and rear directions of the display module; and a second heat dissipation frame disposed to face the second heat dissipation fan along the front and rear directions of the display module.

According to an embodiment of the present invention, by directly bringing external air into contact with the rear surface of the display module, the display module can be quickly cooled and the temperature of the display module can be continuously maintained at an appropriate level, thereby causing deformation and damage to the panel. It is possible to prevent display performance deterioration by preventing the display device, as well as to increase the lifespan of the display device.

In addition, by circulating air using a heat dissipation fan, uniform heat dissipation can be achieved throughout, and the volume of the device can be reduced by minimizing the space between the display module and the housing.

In addition, since a heat dissipation frame for guiding external air to the display module is disposed between the display module and the housing, the heat dissipation effect can be maximized by concentrating the external air into the display module instead of being dispersed to the surroundings during the inflow process.

Effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the present invention.

1 is a perspective view illustrating a display device according to an exemplary embodiment of the present invention.
2 is an exploded perspective view showing a display device according to an embodiment of the present invention.
3 is a plan view illustrating a display device according to an exemplary embodiment of the present invention.
4 is a view schematically showing a state in which a filter is coupled to a back cover of a display device according to an embodiment of the present invention.
5 is a rear view illustrating a display device according to an exemplary embodiment of the present invention.

Hereinafter, various embodiments will be described in more detail with reference to the accompanying drawings. The embodiments described in this specification may be modified in various ways. Certain embodiments may be depicted in the drawings and described in detail in the detailed description. However, specific embodiments disclosed in the accompanying drawings are only intended to facilitate understanding of various embodiments. Therefore, the technical idea is not limited by the specific embodiments disclosed in the accompanying drawings, and it should be understood to include all equivalents or substitutes included in the spirit and technical scope of the invention.

Terms including ordinal numbers, such as first and second, may be used to describe various components, but these components are not limited by the above terms. The terminology described above is only used for the purpose of distinguishing one component from another.

In this specification, terms such as "comprise" or "having" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded. It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

Meanwhile, a “module” or “unit” for a component used in this specification performs at least one function or operation. And a "module" or "unit" may perform a function or operation by hardware, software, or a combination of hardware and software. In addition, a plurality of “modules” or “units” other than “modules” or “units” to be executed in specific hardware or to be executed in at least one processor may be integrated into at least one module. Singular expressions include plural expressions unless the context clearly dictates otherwise.

In addition, in describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be abbreviated or omitted.

1 is a perspective view showing a display device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view showing a display device according to an embodiment of the present invention, and FIG. 3 is a plan view showing a display device according to an embodiment of the present invention. to be.

1 to 3, a display device 1 equipped with a cooling device using a fan according to an embodiment of the present invention (hereinafter referred to as 'display device 1') includes a housing 11, a display module ( 12) and a heat dissipation fan (13).

The housing 11 is coupled to the display module 12 and the heat dissipation fan 13, supports the display module 12 and the heat dissipation fan 13, and protects the display module 12 and the heat dissipation fan 13 from the outside. is configured to

The housing 11 may include a front frame 111 disposed at the front along the front-back direction d1 and a mid cover 112 disposed at the rear.

The front frame 111 has front and rear openings, and the display module 12 may be accommodated therein.

A locking jaw may be provided on one side of the front frame 111 to support a front edge of the display module 12 accommodated therein.

The front frame 111 may be formed in a shape corresponding to the circumference of the display module 12 .

Accordingly, the front frame 111 may wrap around and support the display module 12 accommodated therein.

The mid cover 112 may be coupled to the rear of the front frame 111 to close the open rear of the front frame 111 . Accordingly, the mid cover 112 may protect the display module 12 accommodated in the front frame 111 from the outside.

The mid cover 112 coupled to the rear surface of the front frame 111 may be spaced apart from the rear surface of the display module 12 by a predetermined distance.

Although not shown in the drawings, an airtight material made of an elastic material for waterproofing and dustproofing may be press-fitted into a joint between the front frame 111 and the mid cover 112 .

A heat dissipation fan 13 may be coupled to the rear surface of the mid cover 112 disposed toward the outer space. In addition, on the rear side of the mid cover 112, an auxiliary cover (not shown) having a smaller plane area than the mid cover 112. A control board (not shown) accommodated inside the auxiliary cover may be further installed.

The mid cover 112 may include an air inlet hole 1121 and an air outlet hole 1122 .

The air inlet 1121 is disposed coaxially with the heat dissipation fan 13 and can communicate the rear space of the display module 12 and the rear space of the mid cover 112 . Accordingly, external air flowing by the heat dissipation fan 13 may be introduced into the air inlet 1121 and transferred to the rear surface of the display module 12 .

The air discharge hole 1122 may be disposed at a different position from the air inlet hole 1121 so that the rear space of the display module 12 and the rear space of the mid cover 112 communicate with each other. Accordingly, the air accommodated in the rear space of the display module 12 may be discharged to the outside through the air discharge hole 1122 .

The mid cover 112 may further include a first heat dissipation network 1123 .

The first heat dissipation net 1123 is disposed inside the air discharge hole 1122 in a lattice form, absorbs heat in the air while contacting air passing through the air discharge hole 1122, and releases some heat to the outside. may conduct to the mid cover 112. For example, the first heat dissipation net 1123 may be a thermally conductive material.

The housing 11 may further include a back cover 113.

The back cover 113 is coupled to the rear surface of the mid cover 112 exposed to the outside, and can accommodate the heat dissipation fan 13 therein to protect the heat dissipation fan 13 from the outside. For example, the back cover 113 may be formed in a box shape with one side open. Also, the back cover 113 may have a smaller plane area than the mid cover 112 .

The back cover 113 may include an air flow hole 1131 .

The air flow hole 1131 may communicate the rear space of the mid cover 112 and the outer space with each other.

The air flow hole 1131 may have a larger plane area than the air inlet hole 1121 and the air outlet hole 1122 .

The back cover 113 may further include a second heat dissipation network 1132 .

The second heat dissipation network 1132 is disposed inside the air flow hole 1131 in a lattice form, absorbs heat in the air while contacting air passing through the air flow hole 1131, and releases some heat to the outside. may be conducted to the back cover 113. For example, the second heat dissipation net 1132 may be a thermally conductive material.

4 is a view schematically showing a state in which a filter is coupled to a back cover of a display device according to an embodiment of the present invention.

Referring to FIG. 4 , the back cover 113 may further include a filter 1133.

The filter 1133 is attached to the inner surface of the back cover 113 to filter external air flowing into the air flow hole 1131 from the outside. For example, the filter 1133 may include a pre-filter layer, a carbon filter layer, and a HEPA filter layer.

On the other hand, although not shown in the drawing, when the back cover 113 is coupled to the mid cover 112, the inside of the back cover 113 communicates with the air flow hole 1131. A partitioning member (not shown) may be further included.

When the back cover 113 is coupled to the mid cover 112, the partition member contacts the rear surface of the mid cover 112 and communicates the inner space of the back cover 113 with the air inlet hole 1121 in the first section. and a second section communicating with the air discharge hole 1122.

Accordingly, the external air flowing into the air inlet hole 1121 and the heated air discharged through the air outlet hole 1122 do not mix with each other, thereby preventing the heated air from re-introducing into the air inlet hole 1121. can do.

Referring to FIGS. 1 to 3 , the display module 12 may be accommodated in the housing 11 so that its front surface is exposed to the outside, and may be configured to output an image in response to an electrical signal input from the outside.

For example, although not shown in the drawings, the display module 12 includes a liquid crystal panel, a driving circuit unit connected to an end of the liquid crystal panel to control driving of the liquid crystal panel, and a liquid crystal panel disposed behind the liquid crystal panel. It may include a backlight unit for radiating light to the side, an optical unit disposed between the backlight unit and the liquid crystal panel to diffuse the light emitted from the backlight unit, and a chassis for accommodating and supporting them therein.

The heat dissipation fan 13 is installed in the housing 11 and disposed at the rear of the display module 12 along the front-back direction d1 of the display module 12, and introduces external air to the rear surface of the display module 12. spray directly into

For example, the heat dissipation fan 13 is coupled to the rear surface of the mid cover 112 and is disposed inside the fan support frame communicating with the air inlet 1121 and the fan support frame, and responds to electrical signals input from the outside. It may include a drive motor that generates rotational force by the driving motor, and rotary blades that move external air to the display module 12 while being rotated by the drive motor.

Referring to FIGS. 2 and 3 , the display device 1 may further include a heat dissipation frame 14 .

The heat dissipation frame 14 is disposed between the rear surface of the display module 12 and the front surface of the mid cover 112, and the external air passing through the mid cover 112 is transferred to the display module 12 by the heat dissipation fan 13. can guide you to the back of the

5 is a rear view illustrating a display device according to an exemplary embodiment of the present invention.

Referring to FIGS. 3 and 5 , the heat dissipation frame 14 may be formed in a rectangular shape, and a heat dissipation hole 14a communicating with the air inlet hole 1121 may be formed therein.

The heat radiation hole 14a may have a larger planar area than the air inlet hole 1121 .

The inner surface of the heat dissipation frame 14 forming the heat dissipation hole 14a and guiding the inflow air to the display module 12 is formed in a straight line shape, or the display module ( 12) It may be formed in a structure inclined toward the side.

Referring to FIG. 3 , one surface of the heat dissipation frame 14 may contact the rear surface of the display module 12 and the other surface of the heat dissipation frame 14 may contact the front surface of the mid cover 112 .

Accordingly, the heat dissipation frame 14 may guide air introduced into the inside to the display module 12 and transfer heat generated from the display module 12 to the mid cover 112 .

For example, the heat dissipation frame 14 may be formed of a thermally conductive material.

Referring to FIGS. 2 and 3 , a heat dissipation fan 13 and a heat dissipation frame 14 may be provided in plurality.

The heat dissipation fan 13 includes a first heat dissipation fan 131 disposed on one side along the left-right direction d2 of the display module 12 and disposed on the other side along the left-right direction d2 of the display module 12. A second heat dissipation fan 132 may be included.

The heat dissipation frame 14 includes a first heat dissipation frame 141 disposed opposite to the first heat dissipation fan 131 along the front and rear direction d1 of the display module 12, and the front and back direction d1 of the display module 12. It may include a second heat dissipation frame 142 disposed opposite to the second heat dissipation fan 132 along the.

As described above, according to the embodiment of the present invention, by directly contacting the rear surface of the display module 12 with external air, the display module 12 is quickly cooled and the temperature of the display module 12 is continuously maintained in an appropriate state. Through this, it is possible to prevent deformation and damage of the panel to prevent display performance deterioration, as well as to increase the useful life of the display device 1 .

In addition, by circulating air using the heat dissipation fan 13, uniform heat dissipation can be achieved overall, and the volume of the device can be reduced by minimizing the space between the display module 12 and the housing 11.

In addition, since the heat dissipation frame 14 for guiding external air to the display module 12 is disposed between the display module 12 and the housing 11, the external air is not dispersed to the surroundings in the process of being introduced into the display module 12. It is concentrated in the module 12 to maximize the heat dissipation effect.

Although the preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the specific embodiments described above, and is common in the art to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Of course, various modifications are possible by those with knowledge of, and these modifications should not be individually understood from the technical spirit or prospect of the present invention.

1. Display device
11. Housing
111. Front frame
112. Mid Cover
1121. Air inlet
1122. Air vent
1123. 1st heat sink
113. Back cover
1131. Air flow hole
1132. Second heat sink
1133. Filtration filter
12. Display module
13. Heat dissipation fan
131. First heat dissipation fan
132. Second heat dissipation fan
14. Heat dissipation frame
14a. radiator
141. First heat dissipation frame
142. Second heat dissipation frame

Claims (9)

housing 11;
a display module 12 accommodated in the housing 11 and having a front surface exposed to the outside; and
It is installed in the housing 11 and is disposed at the rear of the display module 12 along the front and rear directions of the display module 12, and external air is introduced and directly sprayed to the rear surface of the display module 12. Including a heat dissipation fan 13 configured,
The housing 11,
A front frame 111 in which the display module 12 is accommodated, wrapped around the circumference of the display module 12, and having front and rear openings, and
It includes a mid cover 112 coupled to the rear surface of the front frame 111 to protect the display module 12 accommodated in the front frame 111 from the outside and to which the heat dissipation fan 13 is coupled,
The mid cover 112,
The rear space of the display module 12 communicates with the rear space of the mid cover 112, is disposed coaxially with the heat dissipation fan 13, and the external air flowing by the heat dissipation fan 13 An air inlet hole 1121 into which is introduced, and
It is disposed at a different position from the air inlet hole 1121 to communicate the rear space of the display module 12 and the rear space of the mid cover 112, and the air accommodated in the rear space of the display module 12 is discharged. Including an air outlet hole 1122 to be,
The housing 11,
A back cover 113 coupled to the rear surface of the mid cover 112 to protect the heat dissipation fan 13 from the outside is further included,
The back cover 113,
An air flow hole 1131 communicating the rear space of the mid cover 112 with the outside space,
The mid cover 112,
A first heat dissipation net 1123 disposed inside the air outlet hole 1122 in a lattice shape and absorbing heat in the air while contacting the air passing through the air outlet hole 1122,
The back cover 113,
A second heat dissipation net 1132 disposed inside the air flow hole 1131 in a lattice form and absorbing heat in the air while being in contact with the air passing through the air flow hole 1131,
The back cover 113,
Further comprising a filter 1133 configured to filter the external air flowing into the air flow hole 1131,
It is disposed between the rear surface of the display module 12 and the front surface of the mid cover 112, and the external air passing through the mid cover 112 is transferred to the display module 12 by the heat dissipation fan 13. Further comprising a heat dissipation frame 14 configured to guide to the back of the,
The heat dissipation frame 14,
It includes a heat radiation hole 14a communicating with the air inlet hole 1121,
The heat radiation hole 14a has a larger plane area than the air inlet hole 1121,
One surface of the heat dissipation frame 14 is in contact with the rear surface of the display module 12, and the other surface of the heat dissipation frame 14 is in contact with the front surface of the mid cover 112, and the heat is generated in the display module 12. The heat to be transferred to the mid cover 112,
The heat dissipation frame 14 is formed of a thermally conductive material,
The heat dissipation fan 13 and the heat dissipation frame 14 are disposed in plurality,
The heat dissipation fan 13,
A first heat dissipation fan 131 disposed on one side of the display module 12 along the left and right directions, and
Including a second heat dissipation fan 132 disposed on the other side along the left and right directions of the display module 12,
The heat dissipation frame 14 is formed in a square shape,
A first heat dissipation frame 141 disposed opposite to the first heat dissipation fan 131 along the front and rear directions of the display module 12, and
A second heat dissipation frame 142 disposed opposite to the second heat dissipation fan 132 along the front and rear directions of the display module 12,
One side of the front frame 111 is provided with a stopper for supporting the front edge of the display module 12 accommodated therein,
The back cover 113 has a box shape with one side opened, and the back cover 113 has a smaller plane area than the mid cover 112,
The filtration filter 1133 is attached to the inner surface of the back cover 113 and includes a pre-filter layer, a carbon filter layer and a HEPA filter layer,
A partition member is mounted inside the back cover 113 to partition the inner space of the back cover 113 communicating with the air flow hole 1131,
The partition member divides the inner space of the back cover 113 into a first section communicating with the air inlet hole 1121 and a second section communicating with the air outlet hole 1122,
Display device (1) equipped with a cooling device using a fan, characterized in that the inner surface of the heat dissipation frame (14) is formed in a structure inclined toward the display module (12) side so that air is concentrated on the display module (12).
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