KR102061534B1 - A Cooler for Display Device - Google Patents

Abstract

The present invention forms an open flow path in the space between the display module enclosure 20 and the substrate enclosure 40, thereby effectively cooling the rear and side surfaces of the display module 10 and the substrate 30, and introducing foreign substances. A waste circulation path is formed in the interior space of the display module enclosure 20 provided in front of the display module 10, which is not to be used. The cooling of the air in the waste circulation path is made as a thermoelectric element, and the heat dissipation part of the thermoelectric element is made as the open flow path. Disclosed is a display cooling apparatus.

Description

Display Cooler {A Cooler for Display Device}

The present invention relates to a display chiller.

Liquid crystal displays (LCDs) or organic light emitting diodes (OLEDs), which are widely used as displays, can be manufactured in a flat shape and are becoming a large area. If the temperature of the display rises, it may cause a malfunction such as a malfunction of the screen. Therefore, while the display is operating, cooling is also performed.

The cause of the increase in the temperature of the display is various, such as the temperature of the surrounding environment, direct sunlight, the heat generated by brightening the display due to the bright ambient environment. In particular, as the display becomes larger, there is an urgent need for efficient cooling of the display.

In view of the above, conventionally, a cooling structure that creates an air circulation path circulating the front and rear of the display and discharges heat to the outside while air is circulated is applied. The circulating air discharges heat to the outside through a heat exchanger that discharges heat to the outside.

Since the circulating air passes through the front of the display, foreign matter enters the front of the display when the circulating air is mixed with the outside air during the cooling process. Therefore, the above-described circulating air is designed to circulate in an isolated state so as not to be mixed with external air. In order to prevent the circulating air from mixing with the outside air, heat is emitted to the outside through heat conduction in the heat exchanger, and in order to increase the thermal conductivity, the cross-sectional area of the heat conducting portion must be large.

In view of this point, the heat exchanger installed in the conventional display device is mostly installed in the rear space of the display. Since it is possible to install a large area heat exchanger 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 only from the viewpoint of increasing the thermal conductivity.

However, such a conventional heat exchanger has a complicated structure because it has to be installed to avoid the positions of various substrates or related components existing behind the display, and it is particularly difficult to design or produce a curved display.

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

In addition, since the air circulating inside the enclosure and the air outside the enclosure transfer heat directly through heat conduction with the surfaces separating the two air therebetween, it is very important to secure the surface areas of the two air facing each other. Therefore, the conventional heat exchanger of this type had to occupy such a large volume in order to increase the surface area.

The present invention has been made to solve the above problems, all the heat generating parts except the front surface of the display module that should not be introduced into the foreign material is directly cooled by the external air flowing through the open flow path to ensure the maximum cooling efficiency It is an object of the present invention to provide a display cooling device capable of efficiently cooling without introducing foreign substances while maintaining a closed space on the front surface of the display module.

In order to solve the above problems, the present invention, the display module housing 20 is provided with a transmission surface on the front surface (21); It is accommodated in the display module enclosure 20, the front face 11 is spaced apart from the front face 21 of the display module housing 20, the rear face 12 is the rear of the display module housing 20 A display module 10 disposed adjacent to 23 or constituting a part of the rear surface 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 a 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 waste circulation environment path 50 through which air received 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 a first surface 711 that absorbs heat and faces an inner space of the display module enclosure 20, and a second surface 712 that generates heat is provided on the display module enclosure 20. It provides a display cooling device comprising a; thermoelectric module (70) having a thermoelectric element (71) facing the outer space of the (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 enclosure 20, the front surface 11 of which is spaced apart from the front surface 21 of the display module enclosure 20; A substrate 30 disposed at the rear of the display module 10 and accommodated in the display module enclosure 20; A waste circulation environment path 50 through which air received 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; The first surface 711, which is installed in the display module enclosure 20, absorbs heat and faces the inner space of the display module enclosure 20, and the second surface 712, which generates heat, has the display module enclosure ( A thermoelectric module 70 having a thermoelectric element 71 facing the outer space of the 20; 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 a second surface of the thermoelectric element 71. Provided is a display cooling apparatus including an external space of the display module enclosure 20 facing 712.

The display module 10 includes a backlight unit 15 on an edge surface or a rear surface thereof, and the backlight unit 15 passes through the edge surface 22 or the rear surface 23 of the display module enclosure 20. The open flow path 60 radiates heat to the flowing air. The thermoelectric element 70 may be installed on an upper portion of the display module housing 20.

Inside the display module enclosure 20, a circulation fan 51 for generating an air flow circulating in the closed circulation path 50 may be installed.

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

The first surface 711 of the thermoelectric element 71 may be provided with a cold sink 77 to extend the contact area with the air in the pedestrian environment.

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

The second surface 712 of the thermoelectric element 71 may be provided with a heat sink 78 to extend the contact area with the air of the open flow path.

A heat radiating fan 78 may be installed in the thermoelectric module 70 to radiate heat from the heat sink 78.

Outside the display module housing 20, a flow fan 62 for generating an air flow through the open flow path 60 may be installed.

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

The ducts 80 may be provided on side surfaces of two edge surfaces 22 of the display module housing 20 facing each other.

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

As another example, the air inlet 90 may further include an air inlet 90 through which the air for flowing the open flow path 60 flows, and a part of the air introduced through the air inlet 90 is opposed to the two ducts. Out of the two ducts 80 which flows to the outside through any one of the ducts, and the other part of the air introduced through the air inlet 90 flows through the open flow path (60) and is provided oppositely It can flow out through either duct.

According to the display cooling apparatus of the present invention, the open flow path through which the outside air flows and the waste circulation path through which the internal air circulates, but the air in the waste circulation path cools the front surface of the screen portion of the display module, in which foreign material is to be blocked. In addition, the air of the open flow path allows cooling of the remaining part of the display product except the front of the display module, thereby efficiently cooling the display.

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

In addition to the effects described above, the specific effects of the present invention will be described together with the following description of specifics for carrying out the invention.

1 is a perspective view of a first embodiment of a display equipped with a display cooling apparatus according to the present invention.
2 is a side cross-sectional view of the display cooling apparatus of FIG.
3 is a sectional view taken along ii of FIG. 2.
4 is a side cross-sectional view of a second embodiment of a display equipped with a display cooling device according to the present invention.
5 is a side cross-sectional view of a third embodiment of a display provided with a display cooling device according to the present invention.
6 is a side cross-sectional view of a fourth embodiment of a display provided with a display cooling device according to the present invention.
7 is a side cross-sectional view of a fifth embodiment of a display provided with a display cooling device according to the present invention.

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

The present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, only this embodiment to make the disclosure of the present invention complete and to those skilled in the art to fully understand the scope of the invention It is provided to inform you.

The ⊙ mark on the drawing indicates the direction in which air penetrates or exits 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 facing the front surface 11, and between the front surface 11 and the rear surface 12. It has a slim cuboid shape including a side connecting the front and the rear. The side surface of the display module 10 may include two long sides and two short sides.

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

The LED array of the backlight unit 15 is fixedly installed to the display module 10 by the housing. In addition, the housing further secures the rigidity of the entire display module 10.

[Display module enclosure]

The display module enclosure 20 may include a display module 10 and may have a substantially hollow rectangular parallelepiped having a larger volume than the display module 10.

The front surface 21 of the display module housing 20 is formed of a transmissive 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. The display module enclosure 20 has a rear surface 23 spaced apart from the rear of the front surface 21 and forms a parallel surface with the front surface 21, and connects the front surface 21 and the rear surface 23 to each other. The edge surface 22 is provided. The display module enclosure 20 isolates the interior space from the exterior 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 enclosure 20. A predetermined space exists between the front surface 11 of the display module 10 and the front surface of the display module enclosure 20. The display module 10 is accommodated in a sealed state in the display module enclosure 20, so that outside air is provided between the front surface 11 of the display module 10 and the front surface 21 of the display module enclosure 20. Inflow can be prevented.

The side surface of the display module 10 may be adjacent to and close to 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 enclosure 20, the side surface of the display module 10 may be configured to form a part of the edge surface 22 of the display module enclosure 20.

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

Alternatively, the side surface of the display module may be disposed slightly apart from the edge of the display module housing 20. At this time, the edge type backlight unit may be cooled by a thermoelectric module to be described later. It is also possible to add additional heat transfer configurations, such as heat pipes, to dissipate heat from the edge type backlight unit to the open flow path.

However, in the case of the display module 10 to which the edge type backlight unit is applied, the side of the display module 10 is opened through the edge surface 22 of the display module enclosure 20 as disclosed in the embodiment of the present invention. When applying a structure in which the flow path is radiated by directly or indirectly contacting the flowing air, it is obvious that a simpler and more compact cooling structure can be realized.

The rear surface 13 of the display module 10 is adjacent to the rear surface 23 of the display module enclosure 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 enclosure 20, the rear surface 12 of the display module 10 may be configured to form a part of the rear surface 23 of the display module enclosure 20.

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

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

[Board]

According to the present invention, a substrate 30 including a control unit and a power supply unit for controlling the display module 10 is disposed at the rear of the display module 10 and disposed outside the display module enclosure 20. do

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 foreign substances 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 outside air may accumulate on the substrate 30 and cause a malfunction. For this reason, the substrate is required to have a structure that can prevent the entry of foreign matter.

[Substrate enclosure]

The substrate 30 is embedded in the substrate enclosure 40. The substrate enclosure 40 is disposed at the rear of the display module enclosure 20 in a state where the substrate 30 is accommodated therein.

The substrate housing 40 is formed in a substantially rectangular parallelepiped shape, and the front surface 41 is disposed side by side with the rear surface 23 while being spaced apart from the rear surface 23 of the display module enclosure 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 are open flow paths ( 60)

Therefore, the substrate 30 is cooled by the air flowing in the open flow path, but is accommodated in the substrate enclosure 40, thereby preventing foreign matters mixed in the outside air introduced into the open flow path from being accumulated on the substrate 30. do.

[Open flow path]

Outside air flows into and flows into the open flow path 60 defined by the spaced space between the display module enclosure 20 and the substrate enclosure 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 enclosure 20, and is disposed on the front surface of the substrate enclosure 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 defined by the edge 22 of the display module enclosure 20 and the portion of the edge 42 of the substrate enclosure 40 extending forward. Through 80).

Air flowing through the duct 80 is in contact with the rim surface 22 of the display module housing 20 flows and is discharged to the outside. Therefore, the air of the open flow path 60 flows through the duct 80 and cools the edge surface 22 of the display module enclosure 20.

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

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

[Enclosure Environment]

In the internal space defined by the display module enclosure 20, a closed circulation path 50 is formed in which air circulates in the internal space. The closed environment 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 internal air of the display module housing 20 circulating the closed circulation path.

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

The thermoelectric element 70 absorbs heat from the air in the closed environment path 50 to cool the air, and the absorbed heat passes through the edge surface 22 of the display module enclosure 20 through the thermoelectric element 70. The heat is radiated by 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 provided on the first surface of the thermoelectric element, and a second of the thermoelectric element. It may include a heat sink 78 provided on the surface, a diffusion fan 74 installed on the cold sink 77 and a heat dissipation fan 75 provided 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 direct current voltage is applied across two different elements, heat is absorbed on one side and heat is generated on the opposite side.

The thermoelectric element is a structure in which an electron is an n-type semiconductor material in which a main carrier and a p-type semiconductor material in which a hole is a carrier are alternately connected in series. An electrode portion for discharging current from the n-type semiconductor material to the p-type semiconductor material is disposed on the second surface, and the current is supplied in the first direction. The first surface becomes the heat absorbing surface and the second surface becomes the heat generating surface. When the current is supplied in the second direction opposite to the first direction, the first surface becomes the heat generating surface and the second surface becomes the heat absorbing surface.

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

In an embodiment of the present invention, the thermoelectric element 71 has a shape such as a flat plate having a first surface and a second surface, and the first surface 711 is an endothermic surface and the second surface 712 is a heating surface. This is illustrated. Accordingly, when the current is supplied to the thermoelectric element in the first direction, the DC power causes the Peltier effect, that is, the heat of the first surface is moved 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 portion. That is, this may be referred to as dissipating heat inside the display module enclosure 20 to the outside of the display module enclosure 20.

The cold sink 77 is laminated on the first surface of the thermoelectric element 71. The cold sink 77 may be formed 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 as shown in the figure may be spaced apart from the left and right.

The heat sink 78 is laminated to 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 in which air of an open flow path flowing through the duct 80 may be in contact with each other.

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, it is possible to configure the heat sink 78 larger in order to effectively heat dissipation.

In addition, the cold sink 77 may be provided with a diffusion fan 74 for generating an air flow for promoting heat exchange of the cold sink, and the heat sink 78 may also provide an air flow for promoting heat exchange of the heat sink. It is possible to install a heat radiating fan 75 that causes.

[Display Chiller]

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

First Embodiment

1 to 3, a first embodiment of a display cooling apparatus according to the present invention will be described.

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 enclosure 20, the duct 80 is the upper edge surface of the display module enclosure 20 The structure provided in the (22) side is illustrated.

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

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

However, if necessary, in order to more effectively cool the inside of the display module enclosure 20, a circulation fan 51 (see FIG. 3) may be separately installed in the display module enclosure 20.

Meanwhile, the open flow path 60 is formed by 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 on the display module housing 20. It is prescribed.

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 enclosure 20 and the front surface of the substrate enclosure 40. In addition, a flow fan 62 may be installed at an air inlet of the open flow path 60 to generate an air flow of the open flow path 60.

The air pressurized by the flow fan 62 flows through the 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. Cool. 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 enclosure 20, and the edge surface 22 has a backlight unit 15 of the display module 10 and a second surface of the thermoelectric module 70. 712 and heat sink 78 are disposed.

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

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

Meanwhile, the backlight unit 15 provided below the display module 10 also contacts the outside air and is located near the air inlet of the open flow path 60, and thus can be sufficiently cooled by the outside air flow.

According to the first embodiment, since the backlight unit 15 provided below the display module 10 is located outside the air inlet of the open flow path 60, the air heated by the backlight unit 15 is open flow. Since the inflow into the path 60 can be minimized, cooler air can be introduced into the open flow path 60.

Second Embodiment

A second embodiment of a display cooling apparatus according to the present invention will be described with reference to FIG. 4. However, in the second embodiment, only differences from the first embodiment will be 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 illustrated. The diffusion fan 74 may promote the air circulation to the waste circulation environment, and further promote the heat exchange of the air from the cold sink 77 to the waste circulation environment.

The cold sink 77 may omit the circulation fan 51 to have the function of the circulation fan 51 of the first embodiment described above, and may be installed together with the circulation fan 51 as necessary. have.

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

In order to further increase the air intake efficiency of the flow fan 62, the flow fan 62 may be fitted in a space separated by the partition wall 81 in the duct 80. Then, the circulation of the air refluxing around the flow fan 62 can be minimized, thereby increasing the air intake efficiency.

In addition, according to the second embodiment, the flow fan 62 may also function as a heat dissipation fan 75 that promotes heat dissipation of the heat sink 78 of the thermoelectric module 70. That is, by providing 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 a display cooling apparatus according to the present invention will be described with reference to FIG. 5. In the third embodiment, only differences from the second embodiment will be described.

According to the third embodiment of the present invention, the thermoelectric module 70 is not only installed on the edge 22 of the upper side of the display module housing 20, but on the side edge and the lower side as shown. It may be installed at 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 or the bottom edge, the diffusion of air cooled by the thermoelectric module 70 is promoted. To this end, 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 to the waste circulation environment.

As shown in FIG. 5, since the thermoelectric module 70 installed on the lower rim surface 22 which does not contact the duct 80 may also be easily in contact with the outside air, the thermoelectric module 70 installed at the corresponding portion may be Cooling can also occur smoothly.

Fourth Embodiment

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

According to the fourth embodiment of the present invention, in contrast to the third embodiment, the duct 80 is provided on two opposite edge surfaces 22 of the display module housing 20, that is, on the sides of the upper and lower edge surfaces 22. All have a different structure.

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

As such, when the ducts 80 are provided on both edges 22 of the display housing module 20 in which the thermoelectric module 70 and / or the backlight unit 15 are provided, and thus an open flow path is formed, all Effective cooling of the thermoelectric module 70 and / or the backlight unit 15 is possible.

Fifth Embodiment

7, a fifth embodiment of the display cooling apparatus according to the present invention will be described. 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 with the fourth embodiment.

Specifically, according to the fourth embodiment, one of the two ducts facing each other is a passage through which air enters 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 of the ducts facing each other are passages through which air flows out from the open flow path.

The air inlet 90 of the open flow path may be disposed at the rear lower portion of the display as shown in FIG. 7. In addition, the air suction port 90 may be provided with a suction fan 63 for sucking air. The suction fan 63 serves as a flow fan for inducing air flow in the open flow path.

The position of the air inlet 90 is not necessarily limited thereto, and any position may be used to smoothly supply air to the space between the two ducts 80 and the display module housing 20 and the substrate housing 40. Do.

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

In addition, in the fifth embodiment, an additional flow fan 62 may be further installed inside the duct 80. This makes it possible to more surely cool the thermoelectric module 70.

In the fourth embodiment, since the air cooling the lower thermoelectric module 70 flows into the open flow path 60, the outside air is slightly heated, and then passes through the open flow path 60.

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

<Variation example>

A modification of the display cooling apparatus according to the present invention will be described with reference to FIG. 8. In the modified example, only differences from the first embodiment will be described.

According to a modification of the present invention, in contrast to the first embodiment, the substrate enclosure 40 is omitted, the substrate 30 is accommodated in the display module enclosure 20 while being installed behind 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 enclosure 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 to cool the thermoelectric element module 70, the open flow path 60 is the display module housing ( The substrate 30, the thermoelectric module 70, and the backlight unit flow in a predetermined space and the circumference of the rear surface of the display module housing 20 adjacent to the rear surface 23 and the edge surface 22 of the substrate 20. Numeral 15 is similar to the first embodiment in that it is cooled by 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 enclosure 20.

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

Although the present invention has been described with reference to the drawings exemplified as above, the present invention is not limited to the embodiments and drawings disclosed herein, and various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention. It is obvious that modifications can be made. In addition, even if the above described embodiments of the present invention while not explicitly described and described the operation and effect according to the configuration of the present invention, it is obvious that the effect predictable by the configuration is also to be recognized.

10: display module
11: Front (screen)
12: rear
15: Backlight Unit (LED Array)
20: display module housing
21: Front (glass, transmissive)
22: border surface
23: rear
30: substrate
40: substrate enclosure
41: front
42: border surface
43: rear
50: Lung environment
51: circulation fan
60: open flow path
62: floating fan
63: suction fan
70: thermoelectric module
71: thermoelectric element
711: page 1
712: p. 2
74: diffusion fan
75: heat dissipation fan
77: cold sink
78: heatsink
80: duct
81: plate
90: air intake

Claims (16)

A display module housing 20 having a transmissive surface provided on the front surface 21;
A display module 10 accommodated in the display module enclosure 20, the front surface 11 of which is spaced apart from the front surface 21 of the display module enclosure 20;
A substrate 30 disposed behind the display module 10;
A waste circulation environment path 50 through which air received in the display module enclosure 20 circulates in a first space provided between the front surface 21 of the display module enclosure 20 and the front surface 11 of the display module 10. ;
The first surface 711 that is installed in the display module enclosure 20, the heat absorbing face to face the first space inside the display module enclosure 20, the second surface 712 for generating heat is the display A thermoelectric module 70 having a thermoelectric element 71 facing the outer space of the module enclosure 20; And
Open flow in which external air flows through a space provided at the rear of the display module enclosure 20 and an external space of the display module enclosure 20 facing the second surface 712 of the thermoelectric element 71. Path 60;
The air inside the display module housing 20 circulating through the closed circulation path 50 is not in contact with the rim surface and the rear surface 12 of the display module 10.
The method according to claim 1,
The display module 10 has a rear surface 12 is disposed adjacent to the rear surface 23 of the display module housing 20 or constitute a part of the rear surface 23,
The substrate housing 40 is spaced apart from the rear of the display module housing 20,
The substrate 30 is accommodated in the substrate enclosure 40 and disposed adjacent to the front surface of the substrate enclosure 40 facing the rear surface of the display module enclosure 20.
The open flow path (60) is a display cooling device in which the outside air flows through the space provided between the display module housing 20 and the substrate housing (40).
The method according to claim 2,
The display module 10 includes a backlight unit 15 on an edge surface or a rear surface thereof.
The backlight unit (15) is a display cooling device for radiating heat to the air flowing through the open flow path (60) through the edge (22) or the rear surface (23) of the display module housing (20).
The method according to claim 1,
The substrate 30 is accommodated in the display module enclosure 20,
The display module 10 includes a backlight unit 15 on an edge thereof,
The backlight unit (15) is a display cooling device for radiating heat to the air flowing through the open flow path (60) through the edge (22) of the display module housing (20).
The method according to claim 1,
The thermoelectric module (70) is a display cooling device installed on top of the display module housing (20).
The method according to claim 1,
And a circulation fan (51) configured to generate an air flow circulating in the closed circulation path (50) in the display module enclosure (20).
The method according to claim 1,
The thermoelectric module (70) is a display cooling device installed on the edge surface (22) of the display module housing (20).
The method according to claim 1,
The first surface (711) of the thermoelectric element (71) is a display cooling device is provided with a cold sink (77) to expand the contact area with the air in the pedestrian environment.
The method according to claim 8,
The thermoelectric module (70) is a display cooling device is provided with a diffusion fan (74) for diffusing the cold air of the cold sink (77).
The method according to claim 1,
The second surface (712) of the thermoelectric element (71) is a display cooling device is provided with a heat sink (78) for extending the contact area with the air of the open flow path.
The method according to claim 10,
And a heat dissipation fan (78) for dissipating heat of the heat sink (78) in the thermoelectric module (70).
The method according to claim 1,
Outside the display module housing (20), the display cooling device is provided with a flow fan 62 for generating an air flow through the open flow path (60).
The method according to claim 1,
Display cooling apparatus is installed on the side surface of the rim surface 22 of the display module housing 20, the duct 80 is provided to provide a passage through which the open flow path 60 provided in the rear of the display module housing 20 is extended. .
The method according to claim 13,
The ducts (80) are respectively provided on the side of the two opposite side surfaces (22) of the display module housing (20).
The method according to claim 14,
Display cooling device in which the air of the open flow path (60) is introduced through one of the two ducts (80) facing each other, the air of the open flow path (60) is discharged through the other duct.
The method according to claim 14,
Further comprising an air inlet (90) through which air for flowing the open flow path (60) is introduced,
A part of the air introduced through the air inlet 90 is discharged to the outside through any one of the two ducts 80 opposed to each other, and the other part of the air introduced through the air inlet 90 is Display cooling device that flows to the outside through any one of the two ducts (80) provided facing each other after flowing the open flow path (60).

Images