KR20180118503A - Display device - Google Patents

Abstract

Provided is a display device for performing air circulation through an internal or external structure of the display device to achieve efficient heat dissipation. The display device includes: a housing; a display module mounted in the housing; a closed-loop air circulation system; and an open-loop air circulation system, wherein the closed-loop air circulation system includes: a first flow path provided between a front surface of the display module and a front surface of the housing, and formed along the front surface of the display module; and a second flow path provided between one side surface of the display module and one side surface of the housing opposite to the one side surface of the display module, and along a longitudinal direction of the one side surface of the display module, in which the first flow path receives air from a first end of the second flow path to discharge the air to a second end of the second flow path, and the open-loop air circulation system includes: a third flow path separated from the first flow path and the second flow path; an inlet for receiving the air from an outside through the third flow path; and an outlet for discharging the air to the outside through the third flow path.

Description

Display device {DISPLAY DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

A display device refers to a mechanical unit for mounting a display module to form an appearance.

In some types of display devices, a large-sized display is generally mounted, and there is a case where there is a large amount of foreign matter such as dust or a difference in temperature around the outside.

Under these environmental conditions, the display device must have a relatively high luminance for sufficient outdoor visibility, and may be left at a high temperature outside, so a structure capable of efficiently dissipating heat generated in the display driving is needed.

In a display device, heat dissipation is implemented in various ways. The heat dissipation efficiency can be increased by maximizing the surface area by using a heat dissipating fin or the like in case of the air cooling type, and by using the structure of a heat pipe or the like in the case of the water cooling type Thereby improving the heat radiation efficiency by guiding the path and the sealing of the heat transfer material.

Such a heat radiation cooling method may be used alone or in combination of two or more as necessary.

Among the above-mentioned heat dissipation methods, the air-cooling type is a direct cooling type in which outside air is directly introduced into a display device, a filter is used to filter dust and inflows, or a heat exchanger is used, There is an indirect cooling method that generates only heat exchange.

Indirect cooling may be a good alternative because of the nature of the display device that is exposed to the outside with many foreign substances such as dust. However, the indirect cooling method may cause the problem of heat dissipation efficiency because the heat generating region and the outside air do not directly exchange heat.

Particularly, in a display device, since heat is generated at a plurality of points such as heat generated in the front panel of the display module, heat generated in the backlight unit of the display module, and heat generated in other electronic components, The internal air which has not been heat-exchanged passes through another heat-generating region as it is, so that sufficient heat exchange may not be performed.

Therefore, it is required to specify an air circulation system or an air circulation system through an internal or external structure of a display device for efficient heat dissipation.

SUMMARY OF THE INVENTION The present invention is directed to realizing efficient heat dissipation of a display device, which is a problem as described above.

According to an aspect of the present invention, there is provided a refrigerator comprising a housing, a display module mounted on the housing, a closed loop air circulation system, and an open loop air circulation system, And a first flow path formed between a front surface of the display module and a front surface of the housing, the first flow path formed along a front surface of the display module, wherein one side surface of the display module and one side surface of the housing, And a second flow path formed along a longitudinal direction of one side of the display module, and the first flow path receives air from the first end of the second flow path and discharges air to the second end of the second flow path Wherein the open loop air circulation system includes a first flow path and a second flow path, Service, and provides a display device comprising an outlet through which the second inlet and the third flow path through the three euros receiving passing the exhaust air from the outside air to the outside.

According to another aspect of the present invention, the housing includes a window covering at least one area of a front surface of the display module, and the first flow path is provided between the window and the front surface of the display module. And a display device.

According to another aspect of the present invention, there is provided a display device, further comprising at least one fan provided at an upper portion or a lower portion of the display module to allow the first flow path to discharge air to the second flow path.

According to another aspect of the present invention, the closed-loop air circulation system is a first closed-loop air circulation system, and further includes a second closed-loop air circulation system provided behind the first closed-loop air circulation system A display device is provided.

According to another aspect of the present invention, there is provided a display apparatus further comprising a diaphragm bracket for partitioning the first closed loop air circulation system and the second closed loop air circulation system.

According to another aspect of the present invention, there is provided a display device further comprising a heat exchanger for transferring heat from the closed-loop air circulation system to the open-loop air circulation system.

According to another aspect of the present invention, there is provided a display device, further comprising a front guide bracket for allowing air to flow from the first flow path to the second flow path and guiding air in the second flow path to the heat exchanger Lt; / RTI >

According to another aspect of the present invention, the heat exchanger further includes an auxiliary guide bracket for guiding air introduced from the second flow path to the first flow path.

According to another aspect of the present invention, there is provided a display device, wherein the heat exchanger is provided in any one of a heat pipe type, a water-cooling type, a thermoelectric module type, and a loop heat pipe type.

According to another aspect of the present invention, there is provided a display device characterized in that the closed-loop air circulation system is sealed from the open-loop air circulation system.

According to another aspect of the present invention, A bottom surface defining a rear surface of the upper surface, a first side surface, and a second side surface opposite to the first side surface, wherein the second flow path includes a side surface of the display module And the first side and the second side of the display module.

Effects of the display device according to the present invention will be described as follows.

According to at least one of the embodiments of the present invention, heat radiation efficiency can be increased.

Also, according to at least one of the embodiments of the present invention, the thickness of the display device can be minimized.

In addition, according to at least one of the embodiments of the present invention, there is an advantage that the manufacturing cost of the display device can be reduced.

Further scope of applicability of the present invention will become apparent from the following detailed description. It should be understood, however, that the detailed description and specific examples, such as the preferred embodiment of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art. .

FIG. 1 (a) is a conceptual view of a display device according to the present invention as viewed from the front, and FIG. 1 (b) is a side sectional schematic view of a display device related to the present invention.
2 is a side sectional schematic view of a display device related to the present invention.
3 is a partial perspective view of a display device related to the present invention.
4 is a cross-sectional perspective view taken along the line VV 'of FIG.
5 is a partial front view of a display device related to the present invention.
6 is a front perspective view of a front guide bracket according to the present invention.
7 is a rear perspective view of a display device related to the present invention.
8 is a schematic cross-sectional view of a display module.
9 is a side cross-sectional view of a display device according to another embodiment of the present invention.
10 is a side sectional schematic view of a display device according to another embodiment of the present invention.
The embodiment of Fig. 11 is a side sectional schematic view showing display devices of another embodiment related to the present invention.
The embodiment of Fig. 12 is a side sectional schematic view of display devices of another embodiment related to the present invention.
The embodiment of Fig. 13 is a side sectional schematic view showing display devices of another embodiment related to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

The display device described in this specification collectively refers to any device having an output unit for outputting an image. Typical examples include digital TVs, analog TVs, desktop computers, and digital signage.

It may also include medium to large output devices such as signage installed in an outdoor enclosure.

For example, an outdoor billboard can be used as an example.

As described above, the present invention has been developed especially focusing on a display device such as a signage installed in such an outdoor enclosure.

FIG. 1 (a) is a conceptual view of a display device 100 according to the present invention, and FIG. 1 (b) is a side cross-sectional view of a display device 100 according to the present invention.

The display device 100 may include a display module 110, a driving unit 120 for driving the display module 110, a display module 110, and a housing 130 for mounting the driving unit 120.

For convenience of explanation, the z axis direction in which the display is output in the display device 100 is defined as forward, and the direction opposite to the z axis is defined as rearward.

The display module 110 may be disposed in front of the display device 100 and the driver 120 may be disposed behind the display module 110 in a stacked manner. Therefore, the front or rear of the display device 100 is defined to have the same meaning as the thickness direction.

The display module 110 may have any structure. For example, the display may be implemented by a liquid crystal display (LCD) method, an organic light emitting diode (OLED) method, or a micro-LED method. The present invention will be described on the premise of a liquid crystal display method. But may be applied to other types of displays within a range that is not inconsistent.

The display module 110 may be stacked rearward in the order of a liquid crystal panel, a diffuser, and a backlight unit panel disposed on the front surface of the display device 100.

The driving unit 120 may include electronic components electrically connected to a driving IC (Drive-IC) of the display module 110 and the like. For example, a system-on-a-chip (SOC) that transmits signals for controlling key electronic configurations of the display device 100, or a battery that powers the display module 110, have. The driving unit 120 includes a printed circuit board (PCB), and the configurations of the driving unit 120 may be mounted on a printed circuit board.

The housing 130 forms an outer appearance of the display device 100 and can mount and support the structures of the display module 110 and the driving unit 120 and the like.

The housing 130 forms a closed space 310 that is separated from the external space of the display device 100. The display device 100 may further include a sealing member such as a gasket to form the closed space 310 from the external space.

The housing 130 may have an open space 320 that is separated from the closed space 310. The open space 320 may be a space for circulating the air outside the display device 100.

The heat exchanger 200 performs heat exchange to dissipate the heat generated inside the display device 100 to the outside. For example, the heat exchanger 200 may be realized by a heat pipe system, a thermoelectric module system, a water cooling system, a LHP (Loop Heat Pipe) system, or the like.

The heat exchanger 200 may be provided on the side of the display device 100 with respect to the display module 110 or the driving part 120.

The thickness of the heat exchanger 200 may be increased or decreased in order to minimize an increase in thickness of the display device 100 due to the heat exchanger 200. [ .

The heat exchanger 200 may be provided on a side surface of the housing 130.

At least one region of the closed space 310 and the open space 320 may be included in the heat exchanger 200. The heat exchanger 200 is located at the boundary between the closed space 310 and the open space 320 and transmits the heat of the closed space 310 to the open space 320.

The heat exchanger 200 may be provided on the upper or lower surface of the housing 130. In the case where the heat exchanger 200 is provided on the upper side, the heat radiation efficiency can be maximized by utilizing the property that the warm air rises and the cold air falls due to the density difference. On the contrary, when the heat exchanger 200 is provided on the lower side, the air flowing in or flowing out from the heat exchanger 200 flows near the bottom surface, so that the winds near the face of the person can minimize the uncomfortable feeling.

In the embodiments of the present invention, it is assumed that at least one heat exchanger 200 is provided on the lower surface of the display device 100. However, this is an embodiment only and may be provided at a position other than the lower side.

2 is a side sectional schematic view of a display device 100 related to the present invention.

Based on the state of the display device 100 of the embodiment shown in Figs. 1 (a) and 1 (b), the present embodiment can divide the closed space 310 into a plurality of spaces.

For example, the diaphragm bracket 140 divides the closed space 310 of FIG. 1 into a first closed space 311 in which the display module 110 is provided and a second closed space 312 in which the drive unit 120 is provided. can do.

The diaphragm bracket 140 does not necessarily refer to any structure but may refer to a structure for partitioning into the first closed space 311 and the second closed space 312. The diaphragm bracket 140 may be formed of a single plate-shaped material vertically crossing the closed space 310, or may be realized through a combination of various members.

In the latter case, the diaphragm bracket 140 is coupled to each corner of the back surface of the display module 110 and is disposed along the side surface of the housing 130 to separate the first and second closed spaces 311 and 312 from each other Can be divided.

The first closed space 311 and the second closed space 312 partitioned by the diaphragm bracket 140 can respectively transfer heat to the open space 320 through the heat exchanger 200. [

The heat exchanger 200 of the first closed space 311 and the heat exchanger 200 of the second closed space 312 may share open space 320 for heat release.

A system for circulating air in the first closed space 311 is referred to as a front closed loop air circulation system 1 and a system for circulating air in the second closed space 312 is referred to as a rear closed loop air circulation system 2, A system for circulating the air in the open space 320 is defined as an open-loop air circulation system 3.

The front closed loop air circulation system 1 heat-exchanges heat with the open loop air circulation system 3 and the rear closed loop air circulation system 2 also dissipates heat by exchanging heat with the open loop air circulation system 3. The front closed loop air circulation system 1 mainly serves to circulate and discharge heat generated in the display module 110 and the rear closed loop air circulation system 2 mainly circulates and generates heat generated in the driving part 120. [ Releasing.

Each closed-loop air circulation system 1, 2 may include a fan for heat exchange with the open-loop air circulation system 3 without heat stagnation, and the heat may be exchanged through the heat exchanger 200 . Details will be described later.

3 is a partial perspective view of a display device 100 related to the present invention. 4 is a cross-sectional perspective view taken along the line V-V 'of FIG. 5 is a partial front view of a display device 100 related to the present invention. For convenience of explanation, FIGS. 3 to 5 are also referred to.

In the present embodiment, it is assumed that the heat exchanger 200 is provided at the lower end of the display device 100. FIG. However, even if the heat exchanger 200 is provided at a different position within the range not inconsistent, the same features described below can be applied.

The front, side, top and left and right sides of the display module 110 may be spaced apart from the inner surface of the housing 130 by a certain distance. At least one area of the front surface of the housing 130 may be provided with a window 131 for viewing the output display.

A space between the front surface of the display module 110 and the front surface of the housing 130 and specifically the window 131 is referred to as a front space A and the upper end of the side surface of the display module 110 is referred to as an upper space B, Left and right sides are defined as left and right spaces C and D, respectively.

The front closed loop air circulation system 1 can largely include a first flow path and a second flow path. The flow path formed in the front space (A) is defined as a first flow path, and the flow path formed in the left and right spaces (C, D) is defined as a second flow path.

The first flow path receives air from the first end of the second flow path. The first flow path discharges air to the second end of the second flow path. The first end of the second flow path means one longitudinal end adjacent to the front heat exchanger 200f in the second flow path and the second end means the other end in the longitudinal direction apart from the front heat exchanger 200f in the second flow path It can mean.

The front guide bracket 150f together with the display module 110, the housing 130 and the front heat exchanger 2001 forms the flow path of the front closed loop air circulation system 1. [

A front heat exchanger (200f) may be provided between the first end of the second flow path and the first flow path. The air passes through the front heat exchanger (200f) at the first end of the second flow path, dissipates heat and flows into the first flow path.

The front heat exchanger 200f is provided at the boundary between the front closed loop air circulation system 1 and the open loop air circulation system 3. [ A part of the front heat exchanger 200f is included in the front closed loop air circulation system 1 and the remaining part is included in the open loop air circulation system 3. [ The former is defined as waste oil and the latter as the third flow path. The heat to the waste oil is transferred to the third flow path.

And connects the first end of the second flow path with the first flow path as waste oil.

The structure and arrangement of the waste oil passages and the third flow path may be changed according to the system of the front heat exchanger 200. In the case where the front heat exchanger 200f is provided by a heat pipe method, the waste oil may be partitioned at the upper end of the third flow path.

The front closed loop air circulation system 1 may include a front internal fan 160f. The front internal fan 160f functions to prevent air from circulating in the front closed loop air circulation system 1 to prevent heat from being stagnated.

The front internal fan 160f may form a flow rate such that the air at the first end of the second flow path flows into the first flow path and the air in the first flow path flows into the second end of the second flow path.

The front internal fan 160f may be provided between the second end of the second flow path and the first flow path. In particular, the front internal fan 160f may be provided in the upper space B. That is, when the front heat exchanger 200f is provided on one side of the housing 130, the front internal fan 106f may be provided on the other side opposite to the one side provided with the front heat exchanger 200f.

When the front internal fan 160f is provided between the second end of the second flow path and the first flow path, it is close to the first flow path in which heat is most generated, which is advantageous in heat radiation efficiency, And does not block the display output area, so it can be a suitable position.

From the thermal point of view, the heat of the front closed loop air circulation system 1 mostly occurs in the first flow path, passes through the upper space B, passes through the second flow path, passes through the heat exchanger 200, ) To the third flow path of the < / RTI >

To disperse the heat, the left space C and the right space D of the second flow path may have the same width. It is assumed that the heat exchanger 200 is provided on the first side of the four sides of the display module 110 of the display device 100 as a single unit, (A) of the front surface space (A) of the display module 110, a second side opposite to the first one of the four sides, a third side and a fourth side adjacent to the first one of the four sides, It is possible to form a circulation path to the heat exchanger 200. The flow path may be formed by the display module 110, the housing 130, the front guide bracket 150f, and the diaphragm bracket 140 in combination.

 6 is a front perspective view of a front guide bracket 150f according to the present invention.

The front guide bracket 150f includes upper guide brackets 151f corresponding to the upper space B (see FIG. 5), left and right guide brackets 152f corresponding to the left and right spaces C and D (see FIG. 5) And an outlet guide bracket 153f corresponding to an area that is in contact with the upper surface 200f. The upper guide bracket 151f, the left and right guide brackets 152f, and the exit guide bracket 153f may be integrally formed, but may be provided as an assembly in which a plurality of parts are fastened or coupled.

The front guide bracket 150f can form a plurality of flow paths 1501 through the partition bracket 151. [ Particularly, when a plurality of front internal fans 160 are provided, the number of channels 1501 corresponding to the number of the front internal fans 160f can be formed. The present embodiment discloses a display device 100 having four front inner fans 160f and four channels 1501 corresponding to the respective front inner fans 160f. In particular, the left space C (see FIG. 5) and the right space D (see FIG. 5) may each be formed to have two flow paths 1501, respectively.

The number of the flow paths 1501 corresponding to the number of the front internal fans 160f of the front closed loop air circulation system 1 (see FIG. 2) is set by the front internal fans 160f corresponding to the respective flow paths 1501 Thereby minimizing the possibility of occurrence of turbulent flow.

Each flow path 1501 may have a plurality of outlets 1502. This is to minimize the possibility of turbulence near the boundary by matching the number of openings of the front heat exchanger 200f. The plurality of outlets 1502 can correspond to the waste oil (see FIG. 3) of the front heat exchanger 200f to allow air in the second flow path to flow.

7 is a rear perspective view of a display device 100 according to the present invention. Refer to Figs. 3 to 5 for convenience of explanation.

As described above, the heat to the waste oil of the front heat exchanger 200f is transferred to the third flow path of the heat exchanger.

One side of the third flow path of the front heat exchanger 200f may be connected to the inlet 201 of the open space circulation system 3 and the other side may be connected to the outlet 202 of the open space air circulation system 3. [

The structure of the front heat exchanger 200f may be provided symmetrically with respect to the longitudinal center of the display device 100. [ For example, the third flow path of the heat exchanger 200 may include an inlet 201 formed on both sides of the left and right sides, and an outlet 202 positioned at the center of the display device 100, And may be provided to escape to the outlet 202. This is because the air flow direction of the waste oil path of the heat exchanger 200 and that of the third flow path are the same for at least one region so that the air can be directly transferred to the air of the third flow path of the lowest temperature by the waste oil having the highest temperature.

The waste heat of the front heat exchanger 200f may cause the air at the first end of the second flow path to flow into the front area of the display module 110 at the same time as it is introduced into the first flow path. That is, the waste oil passage 200f of the front heat exchanger 200f does not move all of the air at the first end portion of the second flow path to the center of the display device 100 to be introduced into the first flow path, It is preferable to prevent the bottleneck phenomenon from occurring when the air is circulated.

At this time, the outlet 202 may be provided on the lower surface or the back surface of the display device 100 so that a sufficient flow rate can be formed.

In addition, an external fan 170 may be provided at the inlet 201 to form a flow rate to the open space 320 of the heat exchanger 200.

As described above, the heat exchanger 200 may be equipped with a heat pipe, a thermoelectric module, a water cooling, and an LHP method. The heat of the waste oil of the heat exchanger 200 and the heat of the third flow path may be directly transferred according to the above method, or indirectly through the working fluid.

The heat pipe type heat exchanger 200 is a type that indirectly transfers heat by the working fluid. The working fluid transfers heat from the closed space 310 to the condensing region by the pressure difference resulting from the working fluid, transfers the transferred heat to the open space 320 and is condensed and moved to the evaporation region by the capillary force do.

The thermoelectric module heat exchanger 200 refers to a method in which an electron receives energy to move between two metals having a potential difference, and heat is generated in this process.

The water-cooled heat exchanger 200 circulates the refrigerant using the pressure of the pump and performs heat exchange.

The LHP (Loop Heat Pipe) type heat exchanger 200 has a structure in which the refrigerant is vaporized by heat in the evaporation region, is liquefied through heat exchange with the open space 320 in the condensation region, and then the refrigerant moves to the evaporation region It says.

Referring again to Figures 2 and 4,

The rear closed loop air circulation system 2 circulates the air in the second closed space 312 to radiate heat. The rear closed loop air circulation system (2) is partitioned from the front closed loop air circulation system (1).

The front closed loop air circulation system 1 and the rear closed loop air circulation system 2 can be partitioned by the display module 110, the diaphragm bracket 140 and the housing 130. [

The rear closed loop air circulation system 2 may include a driving unit 120. The rear closed loop air circulation system 2 mainly serves to discharge heat generated from the driving unit 120 to the outside.

The rear closed loop air circulation system 2 may include a rear internal fan 160r and a rear guide bracket 150r for air circulation.

The rear guide bracket 150r is provided between the driving unit 120 and the rear surface 132 of the housing 130 to form a fourth flow path through which air in the second closed space 312 is circulated. The rear guide bracket 150r may have a plate-like shape parallel to the back surface 132 of the housing 130.

The rear internal fan 160r forms a flow rate so that air can circulate through the fourth flow path. The rear internal fan 160r is provided at one end of the rear guide bracket 150r to move the air in the front region 3121 of the rear guide bracket 150r to the rear region 3122 of the rear guide bracket 150r Can be performed. The air in the front region 3121 takes heat generated from the driving unit 120.

Fig. 4 shows an embodiment in which the rear internal fan 160r forms a flow rate in the top-down direction, but conversely, the flow rate in the downward direction may be formed upward.

The air moved to the rear region 3122 can be radiated through the back surface 132 of the housing 130. When the heat is radiated through the back surface 132 of the housing 130 without a separate heat exchanger, the display device 100 has advantages such as the weight and manufacturing cost.

Alternatively, heat can be dissipated by heat exchange with the rear heat exchanger 200r.

The rear heat exchanger 200r is provided on one side of the housing 130 and can transfer heat from the rear closed loop air circulation system 2 to the open loop air circulation system 3. [ The fourth flow path is connected to the waste oil path of the rear heat exchanger 200r and the heat to the waste oil is discharged to the third flow path of the rear heat exchanger 200r.

The rear heat exchanger 200r may be provided on the same side as the front heat exchanger 200f and may share the third flow path. When the front heat exchanger 200f and the rear heat exchanger 200r share the third flow path and are simultaneously provided in the heat pipe manner, the front heat exchanger 200f may include the front heat pipe 203f (see FIG. 5) And the rear heat exchanger 200r may include a rear heat pipe 203r (see Fig. 5).

The front heat pipe 203f (see FIG. 5) passes through the waste oil path and the third oil path of the front heat exchanger 200f and the rear heat pipe 203r (see FIG. 5) It can penetrate 3 euros. That is, one area of the front heat pipe 203f (see FIG. 5) and one area of the rear heat pipe 203r (see FIG. 5) may be exposed to the open loop air circulation system 3.

The front closed loop air circulation system 1 and the rear closed loop air circulation system 2 may be heat exchanged through one heat exchanger 200 for the purpose of reducing space constraints or manufacturing costs.

However, in this case, the air in the first closed space 311 and the second closed space 312 may not be completely partitioned by the waste oil path of the heat exchanger 200.

Fig. 8 is a schematic cross-sectional view of the display module 110, and Figs. 9 and 10 are side cross-sectional concept views of a display device 100 according to another embodiment related to the present invention.

The features of the above-mentioned embodiments can be equally applied within a range not inconsistent other than the features described below.

In the present embodiment, air in the first closed space 311 flows into or out of the display module 110, unlike the embodiments of FIGS.

The display module 110 generates a lot of heat not only between the front surface but also between the internal configurations of the display module 110. [ Particularly, in the case of a liquid crystal display, much heat is generated in the backlight unit panel due to the light source, so a structure for effectively dissipating heat is required. In the following embodiments, description will be made on the premise of the display device 100 having a liquid crystal display.

8, the display module 110 includes a liquid crystal panel 111 that directly constitutes pixels and outputs a display, a backlight unit panel 113 that provides light from the back surface of the liquid crystal panel 111, a liquid crystal panel And a diffuser 112 provided between the backlight unit panel 11 and the backlight unit panel 113 to uniformly spread the light emitted from the backlight unit panel 113 on the liquid crystal panel 111. [

The space between the diffuser 112 and the backlight unit panel 113 is defined as the first space and the space between the liquid crystal panel 111 and the diffuser 112 is defined as the second space.

A flow path passing through the first space or the second space may be formed in order to dissipate the heat generated by the display module 110 effectively. That is, a flow path may be formed from one side of the first space to the other side, or a flow path may be formed from one side of the second space to the other side.

FIG. 9 is a view showing an embodiment in which the flow path of the display module 110 through the display module 110 is formed in the first closed space 311, And a flow path through which the fluid flows.

In the embodiment of FIG. 9, the air flows in front of the display module 110 is the same as the embodiment of FIGS. 1 to 7, but unlike the embodiment of FIGS. 1 to 7, And can pass through the display module 110 without reaching the heat exchanger 200.

When the flow path passing through the display module 110 is formed, since it is not necessary to form a flow path on the left and right sides as in the embodiment of FIGS. 1 to 7, the right and left bezels can be minimized, Heat can be taken away, and heat dissipation efficiency can be increased.

In the embodiment of FIG. 10, it is assumed that the display module 110 is provided in contact with the front surface of the housing 130, that is, the window 131. Unlike the above-described two embodiments, the flow path of the first closed space 311 may be formed to penetrate the display module 110 twice. Particularly, the liquid crystal panel 111 and the diffuser 112 can be passed once between the diffuser 112 and the backlight unit panel 113 once.

The present embodiment is advantageous in that heat dissipation of the area of the display module 110 is efficiently performed and at the same time the window 131 and the display module 110 are not separated from each other, thereby minimizing interference with visibility.

11, 12 and 13 are schematic side sectional views of display devices 100 according to another embodiment of the present invention. The features of the above-mentioned embodiments can be equally applied within a range not inconsistent other than the features described below.

Unlike the above-described embodiments, the display device 100 may be provided without the diaphragm bracket 140. [ In the absence of the diaphragm bracket 140, the closed space 310 may be configured as a single space for heat exchange with the heat exchanger 200 in an unpartitioned state.

It is possible to reduce the manufacturing cost for partitioning and sealing the first closed space 311 and the second closed space 312 when the diaphragm bracket 140 is not present, ) It is possible to reduce the total volume and weight.

However, if there is no diaphragm bracket 140, the distance of the flow path reaching the heat exchanger 200 may be longer than the amount of heat generated by the structures including the display module 110 and the driving unit 120. Therefore, the heat dissipation efficiency may be deteriorated. To solve this problem, it is preferable to provide a plurality of heat exchangers 200.

In particular, a plurality of heat exchangers 200 may be provided on one side of the display device 100 and on the other side opposite to the one side of the display device 100, respectively. By arranging the heat exchanger 200 on both sides of the display, the heat radiation efficiency can be maximized and the flow path structure can be simplified, and the thickness of the display device 100 can be prevented from increasing.

If necessary, the heat exchanger 200 may be provided on one side of the heat exchanger 200 to form a flow path of the display device 100 (not shown). In this case, the manufacturing cost can be reduced and the volume can be minimized.

11, the flow path includes a front surface of the display module 110, a heat exchanger 200 on one side, a side surface area of the display module 110, a heat exchanger 200 on the other side, A heat exchanger 200 on one side, a rear area on the backside of the display module 110, and a heat exchanger 200 on the other side to reach the front area of the first display module 110 .

12 has a structure similar to that of FIG. 11, but has a feature of passing through the display module 110 once. That is, the flow path includes a front surface of the display module 110, a heat exchanger 200 on one side, an area inside the display module 110, a heat exchanger 200 on the other side, a rear area on the rear surface of the display module 110, The heat exchanger 200, the rear area of the back surface of the display module 110, and the heat exchanger 200 of the other side, to reach the front area of the first display module 110 again.

13 has a structure similar to that of FIG. 12 but has a feature of passing through the display module 110 twice. This structure is characterized in that it has a high heat dissipation efficiency because it passes through the space between the display modules 110, the visibility is good because the window 131 and the display module 110 are in contact with each other, And can be simplified.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

The foregoing detailed description should not be construed in all aspects as limiting and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

1: Front closed loop air circulation system
2: Backward closed loop air circulation system
3: Open loop air circulation system
100: display device 110: display module
111: liquid crystal panel 112: diffuser
113: backlight unit panel 120:
130: housing 131: window
140: diaphragm bracket 150f: front guide bracket
150r: rear guide bracket 1501:
1502: channel outlet 151: compartment bracket
160f: front inner fan 160r: rear inner fan
170: external fan 200: heat exchanger
200f: front heat exchanger 200r: rear heat exchanger
201: Inlet port 202: Outlet space outlet
203f: front heat pipe 203r: rear heat pipe
310: closed space 311: first closed space
312: second closed space 320: open space

Claims (17)

housing;
A display module mounted on the housing;
Closed loop air circulation system; And
An open loop air circulation system,
The closed-loop air circulation system comprises:
And a first flow path provided between a front surface of the display module and a front surface of the housing and formed along a front surface of the display module,
A second flow path formed between one side of the display module and one side of the housing opposite to one side of the display module and along a longitudinal direction of one side of the display module; And
Wherein the first flow path receives air from a first end of the second flow path and discharges air to a second end of the second flow path,
The open-loop air circulation system comprises:
And a third flow path separated from the first flow path and the second flow path,
An inlet for receiving air from the outside through the third flow path; And
And an outlet for discharging air to the outside through the third flow path. The method according to claim 1,
The housing including a window covering at least one area of the front surface of the display module,
Wherein the first flow path is provided between the window and the front surface of the display module. The method according to claim 1,
And at least one fan disposed at an upper portion or a lower portion of the display module to allow the first flow path to allow the air to flow to the second flow path. The method according to claim 1,
Wherein the closed loop air circulation system is a first closed loop air circulation system and further comprises a second closed loop air circulation system disposed behind the first closed loop air circulation system. 5. The method of claim 4,
Further comprising a diaphragm bracket that defines the first closed loop air circulation system and the second closed loop air circulation system. The method according to claim 1,
Further comprising a heat exchanger to transfer heat from the closed loop air circulation system to the open loop air circulation system. The method according to claim 6,
Further comprising a front guide bracket for allowing air to flow from the first flow path to the second flow path and guiding air in the second flow path to the heat exchanger. 8. The method of claim 7,
Wherein the heat exchanger includes an auxiliary guide bracket for guiding air introduced from the second flow path to the first flow path. The method according to claim 6,
The heat exchanger includes:
A heat pipe type, a water cooling type, a thermoelectric module type, or a loop heat pipe type. The method according to claim 1,
Wherein the closed loop air circulation system is sealed from the open loop air circulation system. The method according to claim 1,
The display module includes:
A bottom surface defining a rear surface of the top surface, a first side surface, and a second side surface opposite to the first side surface,
Wherein the second flow path is provided on the first side and the second side of the display module along a side surface of the display module. housing;
A display module mounted on the housing;
A front closed loop air circulation system provided along at least one side of the display module and at least one side of the housing opposite to at least one side of the display module;
An open loop air circulation system that forms a flow path on one side of the housing to receive air from the outside and to flow air to the outside; And
And a front heat exchanger provided on one side of the housing to transfer heat from the front closed loop air circulation system to the open loop air circulation system. 13. The method of claim 12,
The closed-loop air circulation system comprises:
A first flow path forming a first flow path along a front surface of the display module; And
And a second flow path forming a second flow path along a side surface of the display module,
Wherein the first flow path receives air from a first end of the second flow path and discharges air to a second end of the second flow path. 13. The method of claim 12,
A driver for mounting electronic components for driving the display module; And
Further comprising a rear closed-loop air circulation system mounted on the driver and partitioned with the front closed-loop air circulation system and provided behind the front closed-loop air circulation system. 15. The method of claim 14,
Wherein the rear closed loop air circulation system includes a rear guide bracket provided in a region between the driving unit and the rear surface of the housing to guide air in the driving unit area to the rear surface of the housing. 15. The method of claim 14,
Further comprising a rear heat exchanger provided on one side of the housing for transferring heat from the rear closed loop air circulation system to the open loop air circulation system. 17. The method of claim 16,
Wherein the front heat exchanger includes a front heat pipe,
Wherein the rear heat exchanger includes a rear heat pipe,
Wherein one region of the front heat pipe and one region of the rear heat pipe are exposed to the open loop air circulation system such that the front heat exchanger and the rear heat exchanger share the open loop air circulation system. .

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