KR102334505B1 - A Cooler for Display Device - Google Patents

Abstract

The present invention forms an open flow path in the space between the display module housing 20 and the substrate housing 40 to effectively cool the rear and side surfaces of the display module 10 and the substrate 30, and foreign substances are introduced A closed circulation path is formed in the inner space of the display module housing 20 provided in front of the display module 10 that should not be, but the cooling of the air in the closed circulation path is a thermoelectric element, and the heat dissipation part of the thermoelectric element is the open flow path. Disclosed is a display cooling device characterized in that.

Description

Display Cooler {A Cooler for Display Device}

The present invention relates to a display cooling device.

LCD (liquid crystal display) or OLED (organic light emitting diode), which are widely used as displays, can be manufactured in a flat panel shape, and the area is becoming larger. If the temperature of the display rises, there is a risk of malfunction, such as the screen not being displayed. Therefore, while the display is operating, cooling is also performed.

The causes of increasing the temperature of the display are various, such as the temperature of the surrounding environment, direct sunlight, and heat generated by making the display brighter because the surrounding environment is bright. In particular, as the display area becomes larger, efficient cooling of the display is more urgently required.

In consideration of this point, conventionally, an air circulation path circulating the front and rear surfaces of the display is made, and a cooling structure is applied to discharge heat to the outside while air circulates. The circulating air discharges heat to the outside through a heat exchanger that discharges heat to the outside.

Since the above-described circulating air passes through the front of the display, there is a problem that foreign substances enter the front of the display when the circulating air is mixed with external air during cooling. Therefore, the above-described circulating air is designed to circulate in an isolated state so as not to mix with external air. In order to prevent the circulating air from mixing with the outside air, heat is discharged from the heat exchanger to the outside through heat conduction.

In consideration of this point, most of the heat exchangers installed in the conventional display device are installed in the space behind the display. Since it is possible to install a heat exchanger having a large area in the space behind the display as much as it corresponds to the area of the display, it is not a bad choice to install the heat exchanger behind the display from the viewpoint of increasing thermal conductivity.

However, since such a conventional heat exchanger must be installed while avoiding the positions of various substrates or related parts existing behind the display, its structure is complicated, and it is particularly difficult to design or produce in response to a curved display.

In addition, since the heat exchanger itself occupies a certain thickness, it is difficult to design a slim product because the thickness of the display device becomes thicker when the heat exchanger is placed behind the display.

And since this is a method in which the air circulating inside the enclosure and the air outside the enclosure transfer heat through direct heat conduction with a surface separating the two airs between them, it is very important to secure a surface area where the two airs face each other. Therefore, in order to increase the surface area of the conventional heat exchanger of this type, it has no choice but to occupy a large volume.

The present invention has been devised to solve the above-described problems, and all of the heat generating parts except for the front surface of the display module where foreign substances should not be introduced are directly cooled with external air flowing through an open flow path to ensure maximum cooling efficiency, , an object of the present invention is to provide a display cooling device capable of efficient cooling without inflow of foreign substances while maintaining a closed space on the front of the display module.

In order to solve the above problems, the present invention provides a display module housing 20 provided with a transmissive surface on the front surface 21; It is accommodated in the display module housing 20 , the front surface 11 thereof is spaced apart from the front surface 21 of the display module housing 20 , and the rear surface 12 is the rear surface of the display module housing 20 . a display module 10 disposed adjacent to the 23 or constituting a part of the rear 23; a substrate housing 40 spaced apart from the rear of the display module housing 20; a substrate 30 accommodated in the substrate housing 40 and disposed adjacent to the front surface of the substrate housing 40 facing the rear surface of the display module housing 20; an open flow path 60 through which external air flows through a space provided between the display module housing 20 and the substrate housing 40; a closed circulation path 50 through which air accommodated in the display module housing 20 circulates in a space provided between the front surface 21 of the display module housing 20 and the front surface 11 of the display module 10; And installed in the display module housing 20, a first surface 711 that absorbs heat faces the inner space of the display module housing 20, and a second surface 712 that generates heat is the display module housing It provides a display cooling device including; a thermoelectric element module 70 having a thermoelectric element 71 facing the external space of (20).

In addition, the present invention, the display module housing 20 provided with a transmissive surface on the front surface 21; a display module (10) accommodated in the display module housing (20), the front surface (11) of which is spaced apart from the front surface (21) of the display module housing (20); a substrate 30 disposed behind the display module 10 and accommodated in the display module housing 20; a closed circulation path 50 through which air accommodated in the display module housing 20 circulates in a space provided between the front surface 21 of the display module housing 20 and the front surface 11 of the display module 10; Installed in the display module housing 20, the first surface 711 that absorbs heat faces the inner space of the display module housing 20, and the second surface 712 that generates heat is the display module housing ( 20) a thermoelectric element module 70 having a thermoelectric element 71 facing the external space; and an open flow path 60 through which external air flows through a space provided at the rear of the display module housing 20, wherein the open flow path 60 is the second surface of the thermoelectric element 71 It provides a display cooling device including the external space of the display module housing (20) facing (712).

The display module 10 is provided with a backlight unit 15 on its edge surface or rear surface, and the backlight unit 15 passes through the edge surface 22 or the rear surface 23 of the display module housing 20 . Heat is radiated by the air flowing through the open flow path 60 . The thermoelectric module 70 may be installed above the display module housing 20 .

A circulation fan 51 for generating an air flow circulating in the closed circulation path 50 may be installed inside the display module housing 20 .

The thermoelectric module 70 may be installed on the edge surface 22 of the display module housing 20 .

A cold sink 77 that expands the contact area with air of the waste circulation path may be installed on the first surface 711 of the thermoelectric element 71 .

A diffusion fan 74 for diffusing the cold air of the cold sink 77 may be installed in the thermoelectric module 70 .

A heat sink 78 that expands the contact area with air of the open flow path may be installed on the second surface 712 of the thermoelectric element 71 .

A heat dissipation fan 78 for dissipating heat from the heat sink 78 may be installed in the thermoelectric module 70 .

A flow fan 62 for generating air flow through the open flow path 60 may be installed outside the display module housing 20 .

A duct 80 providing a passage through which the open flow path 60 provided at the rear of the display module housing 20 extends may be installed on the side surface of the edge surface 22 of the display module housing 20 .

The duct 80 may be provided on the side of the two opposite edge surfaces 22 of the display module housing 20, respectively.

As an example, the air of the open flow path 60 may be introduced through one of the two ducts 80 provided to face each other, and the air of the open flow path 60 may be discharged through the other duct.

As another example, it further includes an air inlet 90 through which air for flowing the open flow path 60 is introduced, and a part of the air introduced through the air inlet 90 is provided to face the two ducts. The other part of the air flowing out through any one of the ducts (80) and introduced through the air intake (90) flows through the open flow path (60) and then faces the two ducts (80). It can be discharged to the outside through either duct.

According to the display cooling apparatus of the present invention, an open flow path through which external air flows and a closed circulation path through which internal air circulates are distinguished, and the air in the closed circulation path cools the front surface of the screen of the display module where foreign substances must be blocked from entering. And, the air of the open flow path cools the rest of the display product except for the front surface of the display module, so that the display can be cooled efficiently.

In addition, according to the present invention, by cooling the front surface of the display module with a thermoelectric element under a closed circulation path and placing the heat dissipation portion of the thermoelectric element on an open flow path, the front surface of the display module can be efficiently cooled in a sealed state, , parts in areas where sealing is not required can be efficiently cooled by introducing outside air.

In addition to the above-described effects, the specific effects of the present invention will be described together while describing specific details for carrying out the invention below.

1 is a perspective view of a first embodiment of a display on which a display cooling device according to the present invention is installed.
FIG. 2 is a side cross-sectional view of the display cooling device of FIG. 1 .
FIG. 3 is a cross-sectional view ii of FIG. 2 .
4 is a side cross-sectional view of a second embodiment of a display on which a display cooling device according to the present invention is installed.
5 is a side cross-sectional view of a third embodiment of a display on which a display cooling device according to the present invention is installed.
6 is a side cross-sectional view of a fourth embodiment of a display on which a display cooling device according to the present invention is installed.
7 is a side cross-sectional view of a fifth embodiment of a display on which a display cooling device according to the present invention is installed.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention is not limited to the embodiments disclosed below, but can be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete and to completely convey the scope of the invention to those of ordinary skill in the art. It is provided to inform you.

The ⊙ mark on the drawing indicates the direction in which air enters or exits through the paper of the drawing.

[display module]

The display module 10 applied to the display according to the present invention includes a front surface 11 on which a screen is provided, a rear surface 12 opposite to the front surface 11 , and between the front surface 11 and the rear surface 12 . It has a slim rectangular parallelepiped shape including side surfaces connecting the front and rear surfaces. The side surface of the display module 10 may include two long sides and two short sides.

An LED array constituting a part of the backlight unit 15 may be disposed on a side surface of the display module 10 . That is, in the embodiment of the present invention, an edge-type backlight unit in which an LED array is disposed on a side surface of the display module 10 is disclosed. However, the present invention is not limited to the edge-type backlight unit, and may be a direct-type backlight unit in which the LED array is installed on the rear surface 12 of the display module 10 .

The LED array of the backlight unit 15 is fixedly installed on the display module 10 by the housing. And, the housing further secures the rigidity of the overall display module 10 .

[Display module enclosure]

The display module housing 20 contains the display module 10 , and may have a substantially hollow rectangular parallelepiped shape having a larger volume than the display module 10 .

The front surface 21 of the display module housing 20 is made of a transparent surface such as glass, and the user can see the screen provided on the front surface 11 of the display module 10 through the front surface 21 . And the display module housing 20 is spaced apart from the rear of the front surface 21 and has a rear surface 23 forming a plane parallel to the front surface 21, and connecting the front surface 21 and the rear surface 23 A rim surface 22 is provided. The display module housing 20 isolates the inner space and the outer space by the front surface 21 , the edge surface 22 , and the rear surface 23 .

The display module 10 is accommodated in the display module housing 20 . A predetermined space exists between the front surface 11 of the display module 10 and the front surface of the display module housing 20 . The display module 10 is accommodated in a sealed state in the display module housing 20 , so that external air is disposed between the front surface 11 of the display module 10 and the front surface 21 of the display module housing 20 . ingress can be prevented.

The side surface of the display module 10 may be adjacent to and in close contact with the edge surface 22 of the display module housing 20 . In addition, as a result of assembling the display module 10 to the display module housing 20 , the side surface of the display module 10 may constitute a part of the edge surface 22 of the display module housing 20 .

In particular, when the display module 10 includes the above-described edge-type backlight unit, the air of an open flow path, which will be described later, flows in contact with the edge surface 22 of the display module housing 20, so that the display module 10 ), the backlight unit 15 provided on the side can be cooled more easily and effectively.

Alternatively, the side surface of the display module may be disposed in a state slightly separated from the edge surface of the display module housing 20 . In this case, the edge-type backlight unit may be cooled by a thermoelectric module to be described later. In addition, by adding an additional heat transfer structure such as a heat pipe, it is also possible to radiate the heat of the edge-type backlight unit to an open flow path.

However, in the case of the display module 10 to which the edge type backlight unit is applied, as disclosed as an embodiment in the present invention, the side of the display module 10 is opened through the edge surface 22 of the display module housing 20 . It is clear that a simpler and more compact cooling structure can be implemented when a structure for dissipating heat in direct/indirect contact with the air flowing through the flow path is applied.

The rear surface 13 of the display module 10 is adjacent to the rear surface 23 of the display module housing 20 and is installed in close contact with the rear surface 23 . In addition, as a result of assembling the display module 10 to the display module housing 20 , the rear surface 12 of the display module 10 may constitute a part of the rear surface 23 of the display module housing 20 .

Since the rear surface of the display module housing 20 is exposed to an open flow path to be described later, the rear surface 12 of the display module 10 may be cooled by the air flowing through the open flow path.

In particular, when the backlight unit 15 is a direct type installed on the rear surface of the display module 10 as described above, the backlight unit 15 can be cooled more easily and effectively through the air flowing through the open flow path.

[Board]

*According to the present invention, a substrate 30 including a control unit for controlling the display module 10 and a power supply unit is disposed at the rear of the display module 10 , and is located on the outside of the display module housing 20 . be placed

And the substrate 30 is cooled by air in an open flow path, which will be described later. The air in the open flow path contains contaminants such as dust. Therefore, if the substrate 30 is left exposed on the open flow path, foreign substances such as dust introduced together with the external air may accumulate on the substrate 30 and cause a malfunction. For this reason, the substrate is required to have a structure capable of preventing the inflow of foreign substances.

[Board Enclosure]

The substrate 30 is embedded in the substrate housing 40 . The substrate housing 40 is disposed at the rear of the display module housing 20 in a state in which the substrate 30 is accommodated.

The substrate housing 40 has a substantially rectangular parallelepiped shape, and the front surface 41 is disposed side by side with the rear surface 23 in a state that is spaced apart from the rear surface 23 of the display module housing 20 by a predetermined distance. The substrate 30 is installed in close contact with the front surface 41 of the substrate housing 40, and the front surface 41 of the substrate housing 40 and the rear surface 23 of the display module housing 20 have an open flow path ( 60) is specified.

Therefore, the substrate 30 is cooled by the air flowing through the open flow path, and is accommodated in the substrate housing 40 , so foreign substances mixed in the external air flowing into the open flow path are prevented from accumulating on the substrate 30 . do.

[Open flow path]

Outside air is introduced and flows into the open flow path 60 defined by the spaced apart space between the display module housing 20 and the substrate housing 40 . The continuously supplied low-temperature external air flows along the open flow path and cools the rear surface of the display module 10 disposed on the rear surface of the display module housing 20 , and is also disposed on the front surface of the substrate housing 40 . The substrate 30 is cooled. And the air flowing through the open flow path 60 is discharged to the outside.

The air flowing through the open flow path 60 is a duct ( 80) is discharged to the outside.

The air flowing through the duct 80 comes into contact with the edge surface 22 of the display module housing 20 and flows, and then is discharged to the outside. Accordingly, the air of the open flow path 60 flows through the duct 80 and cools the edge surface 22 of the display module housing 20 .

Since the backlight unit 15 of the display module 10 is in contact with the edge surface 22 of the display module housing 20 , the backlight unit can be efficiently cooled by the air of the open flow path 60 .

In addition, the heat dissipation portion of the thermoelectric element module 70 installed under a closed circulation path, which will be described later, is exposed on the edge surface 22 of the display module housing 20 . Accordingly, the air in the open flow path 60 flowing through the duct 80 cools the thermoelectric module 70 and is discharged to the outside.

[Pulmonary Circulation Path]

A closed circulation path 50 through which air circulates in the inner space is formed in the inner space defined by the display module housing 20 . The closed circulation path 50 may be provided between the front surface 21 of the display module housing 20 and the front surface 11 of the display module 10 . Accordingly, the front surface 11 of the display module 10 may be cooled by the air inside the display module housing 20 circulating in the closed circulation path.

The air in the closed circulation path absorbs heat inside the display module housing 20 and cools the related components, and the air in the closed circulation path 50 heated by the absorption heat is installed on the edge surface 22 of the display module housing 20 It may be cooled again by the thermoelectric module 70 .

The thermoelectric module 70 absorbs heat from the air of the closed circulation path 50 to cool the air, and the absorbed heat passes through the rim surface 22 of the display module housing 20 through the thermoelectric module 70 . Heat is radiated to the outside air flowing in the duct (80).

[Thermoelectric module]

The thermoelectric module 70 includes a thermoelectric element 71 having a first surface 711 and a second surface 712 , a cold sink 77 installed on the first surface of the thermoelectric element, and a second of the thermoelectric element. It may include a heat sink 78 installed on the surface, a diffusion fan 74 installed on the cold sink 77 , and a heat dissipation fan 75 installed on the heat sink 78 .

The thermoelectric element 71 is an element using the Peltier effect. The Peltier effect refers to a phenomenon in which when a DC voltage is applied across two different elements, heat is absorbed on one side and heat is generated on the opposite side according to the direction of the current.

The thermoelectric element has a structure in which an n-type semiconductor material in which electrons are the main carriers and a p-type semiconductor material in which holes are carriers are alternately connected in series, and the p-type semiconductor material is formed on the first surface based on one direction in which current flows. When the current is supplied in the first direction by arranging an electrode portion that allows a current to flow from the The first surface becomes a heat absorbing surface and the second surface becomes a heat generating surface, and when current is supplied in a second direction opposite to the first direction, the first surface becomes a heat generating surface and the second surface becomes a heat absorbing surface.

According to the present invention, the thermoelectric module 70 is installed on the display module housing 20 , and more specifically, it is installed on the edge surface 22 of the display module housing 20 . The first surface 711 of the thermoelectric element 71 is disposed in the direction facing the inner space of the display module housing 20 with respect to the edge surface 22 , and the outer space of the display module housing 20 , that is, The second surface 712 of the thermoelectric element 71 is disposed in the direction facing the duct 80 .

In the embodiment of the present invention, the thermoelectric element 71 has the same shape as a flat plate having a first surface and a second surface, the first surface 711 is a heat absorbing surface and the second surface 712 is a heat generating surface This is exemplified. Accordingly, when a current is supplied to the thermoelectric element in the first direction, the DC power supply causes the Peltier effect, that is, the heat of the first surface moves toward the second surface. That is, the first surface 711 of the thermoelectric element 71 becomes a cold surface, and the second surface 712 becomes a heat generating part. That is, it can be said that the heat inside the display module housing 20 is radiated to the outside of the display module housing 20 .

A cold sink 77 is stacked in contact with the first surface of the thermoelectric element 71 . The cold sink 77 may be made of a metal material or an alloy material such as aluminum having high thermal conductivity, and a plurality of heat exchange fins extending in the vertical direction are formed on the front surface thereof to be spaced apart from one another to the left and right as shown.

A heat sink 78 is stacked in contact with the second surface of the thermoelectric element 71 . The heat sink 78 is configured to quickly dissipate or release heat generated on the second surface 712 by the Peltier effect. The heat sink 78 may have the same material and shape as the cold sink 77 , and may have a shape through which air in an open flow path flowing through the duct 80 can pass through while in good contact.

On the other hand, the size of the cold sink 77 and the heat sink 78 does not have to be the same size as each other, and it is possible to configure the heat sink 78 to be larger in order to effectively dissipate heat.

Additionally, the cold sink 77 may be provided with a diffusion fan 74 for generating an air flow to promote heat exchange of the cold sink, and similarly, the heat sink 78 is provided with an air flow for promoting heat exchange of the heat sink. A heat dissipation fan 75 may be installed.

[Display Cooling System]

Hereinafter, embodiments of the display cooling device to which the above-described configurations are applied will be described.

<First embodiment>

A first embodiment of a display cooling device according to the present invention will be described with reference to FIGS. 1 to 3 .

According to the first embodiment of the present invention, the thermoelectric module 70 is installed on the upper edge surface 22 of the display module housing 20 , and the duct 80 is the upper edge surface of the display module housing 20 . The structure provided on the side (22) is illustrated.

When power is supplied to the thermoelectric module 70 , the cold sink 77 is cooled and the ambient air inside the display module housing 20 is cooled. The cooled air descends and cools the heat generated by the screen 11 side of the display module 10 and the heat generated by direct sunlight irradiated through the front surface 11 of the display module housing 20 . The air heated by heat generated from the screen 11 side of the display module 10 rises again inside the display module housing 20 , and is cooled again by the thermoelectric module 70 .

As in the first embodiment, when the thermoelectric module 70 is installed on the upper edge surface 22, natural convection can occur as above, so that the fan forcibly circulates the air inside the display module housing 20. It is possible to omit the installation. In addition, natural convection may sufficiently occur even if the diffusion fan 74 is not installed in the thermoelectric module 70 .

However, if necessary, in order to more effectively cool the interior of the display module housing 20, a separate circulation fan 51 (refer to FIG. 3 ) may be installed in the display module housing 20 .

On the other hand, the open flow path 60 is a space between the rear surface of the display module housing 20 and the front surface of the substrate housing 40, and the duct 80 provided in the upper part of the display module housing 20. stipulated

The air inlet of the open flow path 60 may be a lower portion of the space between the rear surface of the display module housing 20 and the front surface of the substrate housing 40 . In addition, a flow fan 62 for generating air flow in the open flow path 60 may be installed at the air inlet of the open flow path 60 .

The air pressurized by the flow fan 62 flows in a space between the rear surface of the display module housing 20 and the front surface of the substrate housing 40 and moves the rear surface of the display module 10 and the substrate 30 to each other. cool down The air then flows through the duct 80 .

The duct 80 constitutes a passage through which air can flow forward as shown in FIG. 1 . The duct 80 is in contact with the edge surface 22 of the display module housing 20 , and the edge surface 22 has the backlight unit 15 of the display module 10 , and the second surface of the thermoelectric module 70 . 712 and a heat sink 78 are disposed.

Accordingly, the air flowing through the duct 80 cools the backlight unit 15 and the thermoelectric module 70 and flows out to the outside.

The section in which the thermoelectric module 70 is installed may be disposed in a space separated by the partition wall 81 as shown in FIG. 1 , and may be more intensively cooled by the heat dissipation fan 712 . When the heat dissipation fan 712 is installed in a direction coincident with the air flow direction of the open flow path as shown in FIG. 2 , heat dissipation of the heat sink 78 is facilitated and the air flow of the open flow path is further induced. can do.

Meanwhile, since the backlight unit 15 provided under the display module 10 also comes in contact with the outside air and is located near the air inlet of the open flow path 60 , it can be sufficiently cooled by the flow of outside air.

According to the first embodiment, since the backlight unit 15 provided at the lower part of the display module 10 is more outside than the air inlet of the open flow path 60 , the air heated by the backlight unit 15 flows into the open flow. Inflow into the path 60 can be minimized, so that cooler air can be introduced into the open flow path 60 .

<Second embodiment>

A second embodiment of the display cooling device according to the present invention will be described with reference to FIG. 4 . However, in the second embodiment, the difference from the first embodiment will be mainly described.

According to the second embodiment of the present invention, a structure in which the diffusion fan 74 is further installed in the cold sink 77 of the thermoelectric module 70 is exemplified. The diffusion fan 74 may promote air circulation in the closed circulation path and further promote heat exchange between the air in the closed circulation path in the cold sink 77 .

The cold sink 77 may have the function of the circulation fan 51 of the first embodiment described above, so that the circulation fan 51 may be omitted, and if necessary, it may be installed together with the circulation fan 51 . have.

In addition, according to the second embodiment, a structure in which the flow fan 62 for generating the air flow of the open flow path 60 is installed on the duct 80 side is exemplified. Air flowing through the open flow path 60 may be introduced in a suction type by the flow fan 62 to flow.

In order to further increase the air intake efficiency of the flow fan 62 , the flow fan 62 may be fitted in a space defined by the partition wall 81 in the duct 80 . Then, it is possible to minimize the circulation of the air refluxing around the flow fan 62, it is possible to increase the air intake efficiency.

Also, according to the second embodiment, the flow fan 62 may also function as a heat dissipation fan 75 for accelerating heat dissipation of the heat sink 78 of the thermoelectric module 70 . That is, by installing the flow fan 62 in the duct 80 , it is possible to omit the heat radiation fan 75 of the thermoelectric module 70 .

<Third embodiment>

A third embodiment of the display cooling device according to the present invention will be described with reference to FIG. 5 . However, in the third embodiment, differences from the second embodiment will be mainly described.

According to the third embodiment of the present invention, the thermoelectric module 70 is not installed only on the edge surface 22 of the upper side of the display module housing 20, but the side edge surface, and the lower side as shown. It may be installed on the edge surface 22 .

Unlike the first embodiment in which natural convection is smoothly induced, when the thermoelectric module 70 is installed on the side edge surface or the lower edge surface, diffusion of air cooled by the thermoelectric module 70 is promoted To do this, it is preferable to install (or install) the diffusion fan 74 in the thermoelectric module 70, and further install a circulation fan 51 for air circulation in the closed circulation path.

As shown in FIG. 5 , the thermoelectric module 70 installed on the lower edge surface 22 that is not in contact with the duct 80 can also easily come into contact with the outside air. Cooling can also occur smoothly.

<Fourth embodiment>

A fourth embodiment of the display cooling device according to the present invention will be described with reference to FIG. 6 . However, in the fourth embodiment, differences from the third embodiment will be mainly described.

According to the fourth embodiment of the present invention, in contrast to the third embodiment, the duct 80 is provided on the side surfaces of the two opposing edge surfaces 22 of the display module housing 20 , that is, the upper and lower edge surfaces 22 . The difference is that they all have an installed structure.

According to the fourth embodiment, the open flow path 60 is the lower edge surface 22 of the display module housing 20, the rear surface 23 of the display module housing 20, and the upper edge surface of the display module housing ( 22) has a path through it. Accordingly, the lower thermoelectric module 70 and the backlight unit 15 are cooled by the air flowing through the duct 80 provided at the lower part, and the upper thermoelectric module 70 and the backlight unit 15 are disposed on the upper part. It is cooled by the air flowing through the provided duct (80). Here, the concept of upper and lower parts is the upper part and lower part in the drawing, and the two thermoelectric module and the duct may be provided on both sides of the display module housing, or may be provided on both the upper and lower parts and both sides of the display module housing.

As such, if the duct 80 is provided on the edge surface 22 of the display housing module 20 provided with the thermoelectric module 70 and/or the backlight unit 15, and an open flow path is formed through this, all Effective cooling of the thermoelectric module 70 and/or the backlight unit 15 is possible.

<Fifth embodiment>

A fifth embodiment of the display cooling device according to the present invention will be described with reference to FIG. 7 . However, in the fifth embodiment, the differences from the fourth embodiment will be mainly described.

According to the fifth embodiment of the present invention, there is a difference in having a separate air intake 90 compared to the fourth embodiment.

Specifically, according to the fourth embodiment, one duct of the two ducts disposed opposite to each other is a passage through which air is introduced into the open flow path, and the other duct is a passage through which air flows out from the open flow path. do.

On the other hand, according to the fifth embodiment, both ducts disposed opposite to each other become passages through which air flows out from the open flow path.

The air intake 90 of the open flow path may be disposed at the lower rear of the display as shown in FIG. 7 . And a suction fan 63 for sucking air may be installed at the air intake 90 . The suction fan 63 serves as a flow fan to induce air flow in the open flow path.

The position of the air intake 90 is not necessarily limited thereto, and any position that can smoothly supply air to the space between the two ducts 80 and the display module housing 20 and the substrate housing 40 is possible. do.

A part of the air introduced through the air inlet 90 flows out through any one of the two ducts 80 provided to face each other, and the other part of the air introduced through the air inlet 90 is the After flowing through the open flow path (60), it flows out through any one of the two ducts (80) provided to face each other.

In addition to this, in the fifth embodiment, an additional flow fan 62 may be further installed inside the duct 80 . As a result, the cooling of the thermoelectric module 70 can be further ensured.

In the fourth embodiment, the air that has cooled the lower thermoelectric module 70 flows into the open flow path 60 and passes through the open flow path 60 after the outside air is slightly heated.

On the other hand, in the fifth embodiment, since the external cold air introduced through the air intake 90 is branched into the duct 80, more efficient cooling of the thermoelectric module 70 is possible.

<Modified example>

A modified example of the display cooling device according to the present invention will be described with reference to FIG. 8 . However, in the modified example, the difference from the first embodiment will be mainly described.

According to a modification of the present invention, in contrast to the first embodiment, the substrate housing 40 is omitted, and the substrate 30 is accommodated in the display module housing 20 while being installed in the rear of the display module 10, The difference is that the rear surface 12 of the display module 10 is disposed at a slight distance from the rear surface 23 of the display module housing 20 .

On the other hand, the closed circulation path 50 is provided in front of the display module 10, the air of the closed circulation path 50 is cooled by the thermoelectric module 70, and the open flow path 60 is the display module enclosure ( 20) adjacent to the rear surface 23 and the edge surface 22 and flowing around a predetermined space and edge surface of the rear of the display module housing 20, the substrate 30, the thermoelectric module 70, and the backlight unit The first embodiment and the modified example are similar to each other in that (15) is cooled by the air flowing through the open flow path.

The air flowing through the open flow path 60 cools the substrate 30 and the rear surface 12 of the display module 10 while passing through the rear space of the rear surface 23 of the display module housing 20 .

And the air of the open flow path 60 flows through the duct 80 provided on the edge surface 22 of the display module housing 20, and the backlight unit 15 provided on the side of the display module 10; The thermoelectric module 70 is cooled.

As described above, the present invention has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings disclosed in the present specification. It is obvious that variations can be made. In addition, even if the effect of the configuration of the present invention is not explicitly described and described while describing the embodiment of the present invention, it is natural that the effect predictable by the configuration should also be recognized.

10: display module
11: Front (Screen)
12: rear
15: backlight unit (LED array)
20: display module enclosure
21: Front (glass, transmissive surface)
22: edge surface
23: rear
30: substrate
40: substrate enclosure
41: front
42: border surface
43: rear
50: pulmonary circulation path
51: circulation fan
60: open flow path
62: floating fan
63: suction fan
70: thermoelectric module
71: thermoelectric element
711: first page
712: 2nd page
74: diffusion fan
75: heat dissipation fan
77: cold sink
78: heat sink
80: duct
81: diaphragm
90: air intake

Claims (12)

Display module housing 20 provided with a transmission surface on the front surface 21;
a display module (10) accommodated in the display module housing (20), the front surface (11) of which is spaced apart from the front surface (21) of the display module housing (20);
a substrate 30 disposed behind the display module 10;
In the first space provided between the front surface 21 of the display module housing 20 and the front surface 11 of the display module 10, a closed circulation path 50 in which the air accommodated in the display module housing 20 circulates. ;
Installed in the display module housing 20, a first surface 711 that absorbs heat faces the first space inside the display module housing 20, and a second surface 712 that generates heat is the display a thermoelectric element module 70 having a thermoelectric element 71 facing the external space of the module housing 20; and
An open flow in which external air flows through a space provided at the rear of the display module housing 20 and an external space of the display module housing 20 facing the second surface 712 of the thermoelectric element 71 . path (60); including;
The air inside the display module housing 20 circulating the closed circulation path 50 is not in contact with the rear surface 12 of the display module 10 .
delete Display module housing 20 provided with a transmission surface on the front surface 21;
a display module (10) accommodated in the display module housing (20), the front surface (11) of which is spaced apart from the front surface (21) of the display module housing (20);
a substrate 30 disposed behind the display module 10;
In the first space provided between the front surface 21 of the display module housing 20 and the front surface 11 of the display module 10, a closed circulation path 50 in which the air accommodated in the display module housing 20 circulates. ;
Installed in the display module housing 20, a first surface 711 that absorbs heat faces the first space inside the display module housing 20, and a second surface 712 that generates heat is the display a thermoelectric element module 70 having a thermoelectric element 71 facing the external space of the module housing 20; and
An open flow in which external air flows through a space provided at the rear of the display module housing 20 and an external space of the display module housing 20 facing the second surface 712 of the thermoelectric element 71 . path (60); including;
The closed circulation path 50 is a display cooling device that does not surround the display module (10).
Display module housing 20 provided with a transmission surface on the front surface 21;
a display module (10) accommodated in the display module housing (20), the front surface (11) of which is spaced apart from the front surface (21) of the display module housing (20);
a substrate 30 disposed behind the display module 10;
In the first space provided between the front surface 21 of the display module housing 20 and the front surface 11 of the display module 10, a closed circulation path 50 in which the air accommodated in the display module housing 20 circulates. ;
Installed in the display module housing 20, a first surface 711 that absorbs heat faces the first space inside the display module housing 20, and a second surface 712 that generates heat is the display a thermoelectric element module 70 having a thermoelectric element 71 facing the external space of the module housing 20; and
An open flow in which external air flows through a space provided at the rear of the display module housing 20 and an external space of the display module housing 20 facing the second surface 712 of the thermoelectric element 71 . path (60); including;
Display cooling device further comprising a; substrate housing 40 for accommodating the substrate 30 therein.
5. The method according to claim 4,
The substrate housing 40 is spaced apart from the rear of the display module housing 20,
The open flow path 60 is a display cooling device through which external air flows through a space provided between the display module housing 20 and the substrate housing 40 .
5. The method according to claim 4,
The substrate housing 40 is disposed at the rear of the display module housing 20,
The open flow path 60 is a display cooling device through which external air flows through a space provided at the rear of the substrate housing 40 .
Display module housing 20 provided with a transmission surface on the front surface 21;
a display module (10) accommodated in the display module housing (20), the front surface (11) of which is spaced apart from the front surface (21) of the display module housing (20);
a substrate 30 disposed behind the display module 10;
In the first space provided between the front surface 21 of the display module housing 20 and the front surface 11 of the display module 10, a closed circulation path 50 in which the air accommodated in the display module housing 20 circulates. ;
Installed in the display module housing 20, a first surface 711 that absorbs heat faces the first space inside the display module housing 20, and a second surface 712 that generates heat is the display a thermoelectric element module 70 having a thermoelectric element 71 facing the external space of the module housing 20; and
An open flow in which external air flows through a space provided at the rear of the display module housing 20 and an external space of the display module housing 20 facing the second surface 712 of the thermoelectric element 71 . path (60); including;
The display module 10 is provided with a backlight unit 15 on the edge surface,
The backlight unit 15 is a display cooling device for dissipating heat with the air flowing through the open flow path 60 through the edge surface 22 of the display module housing 20 .
Display module housing 20 provided with a transmission surface on the front surface 21;
a display module (10) accommodated in the display module housing (20), the front surface (11) of which is spaced apart from the front surface (21) of the display module housing (20);
a substrate 30 disposed behind the display module 10;
In the first space provided between the front surface 21 of the display module housing 20 and the front surface 11 of the display module 10, a closed circulation path 50 in which the air accommodated in the display module housing 20 circulates. ;
Installed in the display module housing 20, a first surface 711 that absorbs heat faces the first space inside the display module housing 20, and a second surface 712 that generates heat is the display a thermoelectric element module 70 having a thermoelectric element 71 facing the external space of the module housing 20; and
An open flow in which external air flows through a space provided at the rear of the display module housing 20 and an external space of the display module housing 20 facing the second surface 712 of the thermoelectric element 71 . path (60); including;
The display module 10 is provided with a backlight unit 15 on the rear side,
The backlight unit 15 is a display cooling device for dissipating heat with air flowing through the open flow path 60 through the rear surface 23 of the display module housing 20 .
Display module housing 20 provided with a transmission surface on the front surface 21;
a display module (10) accommodated in the display module housing (20), the front surface (11) of which is spaced apart from the front surface (21) of the display module housing (20);
a substrate 30 disposed behind the display module 10;
In the first space provided between the front surface 21 of the display module housing 20 and the front surface 11 of the display module 10, a closed circulation path 50 in which the air accommodated in the display module housing 20 circulates. ;
Installed in the display module housing 20, a first surface 711 that absorbs heat faces the first space inside the display module housing 20, and a second surface 712 that generates heat is the display a thermoelectric element module 70 having a thermoelectric element 71 facing the external space of the module housing 20; and
An open flow in which external air flows through a space provided at the rear of the display module housing 20 and an external space of the display module housing 20 facing the second surface 712 of the thermoelectric element 71 . path (60); including;
The thermoelectric module 70 is a display cooling device installed on the edge surface 22 of the display module housing 20 .
Display module housing 20 provided with a transmission surface on the front surface 21;
a display module (10) accommodated in the display module housing (20), the front surface (11) of which is spaced apart from the front surface (21) of the display module housing (20);
a substrate 30 disposed behind the display module 10;
In the first space provided between the front surface 21 of the display module housing 20 and the front surface 11 of the display module 10, a closed circulation path 50 in which the air accommodated in the display module housing 20 circulates. ;
Installed in the display module housing 20, a first surface 711 that absorbs heat faces the first space inside the display module housing 20, and a second surface 712 that generates heat is the display a thermoelectric element module 70 having a thermoelectric element 71 facing the external space of the module housing 20; and
An open flow in which external air flows through a space provided at the rear of the display module housing 20 and an external space of the display module housing 20 facing the second surface 712 of the thermoelectric element 71 . path (60); including;
A display cooling device in which a duct 80 providing a passage through which the open flow path 60 provided at the rear of the display module housing 20 extends is installed on the side of the edge surface 22 of the display module housing 20 .
11. The method of claim 10,
The duct 80 is provided on the two opposite edge surfaces 22 sides of the display module housing 20, respectively,
A display cooling device in which air from the open flow path (60) is introduced through one of the two ducts (80) provided to face each other, and air from the open flow path (60) is discharged through the other duct.
11. The method of claim 10,
Further comprising an air intake 90 through which air for flowing the open flow path 60 is introduced,
The duct 80 is provided on the two opposite edge surfaces 22 sides of the display module housing 20, respectively,
A part of the air introduced through the air inlet 90 flows out through any one of the two ducts 80 provided to face, and the other part of the air introduced through the air inlet 90 is the A display cooling device that flows through the open flow path (60) and then flows out through one of the two ducts (80) provided to face each other.

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