KR102037323B1 - Display device - Google Patents

Abstract

A housing, a display module mounted on the housing, a closed loop air circulation system and an open loop air circulation system for air circulation through an internal or external structure of a display device for efficient heat dissipation, and the closed loop air circulation system includes: A first flow path disposed between the front surface of the display module and the front surface of the housing and formed along the front surface of the display module, the side surface of the housing facing one side of the display module and one side of the display module; The second flow path and the first flow path provided between the first flow path and the first flow path formed along one side length direction of the display module receive air from the first end of the second flow path and discharge the air to the second end of the second flow path. The open space air circulation system includes the first flow path and the second flow path. A display device includes a third flow path that is divided, an inlet for receiving air from the outside through the third flow path, and an outlet for exhausting air to the outside through the third flow path.

Description

Display device {DISPLAY DEVICE}

The present invention relates to a display device considering the heat dissipation structure.

The display device refers to one mechanical unit that mounts a display module to form an appearance.

Some types of display devices generally mount a large-inch display, and may be located outside of a large amount of foreign matter such as dust or a large temperature difference.

Under such environmental conditions, the display device should have a relatively high brightness for sufficient outdoor visibility, and may be left untouched at a high outside temperature, and thus, a structure capable of efficiently dissipating heat generated by driving the display is required.

In the display device, heat dissipation is implemented in various ways. It can be divided into air-cooled or water-cooled depending on the heat transfer process in the heat dissipation process.In the case of air-cooled, the heat dissipation efficiency can be increased by maximizing the surface area using heat-dissipating fins. The heat transfer efficiency can be improved by guiding the path and sealing of the heat transfer performance material.

The heat dissipation cooling method may be used alone, or two or more thereof may be used in combination if necessary.

Among the above-mentioned heat dissipation methods, the air-cooling type is a direct cooling method in which external air flows into the display device as it is, but filters out dust and inflows by using a filter, or in principle, by using a heat exchanger to block the air outside the device and the air inside the device. There is an indirect cooling method that only generates heat exchange.

Indirect cooling may be a good alternative due to the characteristics of a display device in which foreign substances such as dust are exposed to the outside. However, indirect cooling may cause heat dissipation efficiency in that the heat generating area and the outside air do not directly exchange heat.

In particular, since the display device generates high heat at a plurality of points such as heat generated from the front panel of the display module, heat generated from the backlight unit of the display module, and heat generated from other electronic components, the display device is configured as a single circulation structure. In this case, since the internal air that has not been heat exchanged passes through another heat generating region, sufficient heat exchange may not be performed.

Therefore, an embodiment of the air circulation system or the air circulation structure through the internal or external structure of the display device for efficient heat dissipation is required.

It is an object of the present invention to implement efficient heat dissipation of a display device, which is the aforementioned problem.

According to an aspect of the present invention for achieving the above or another object, includes a housing, a display module mounted on the housing, a closed loop air circulation system and an open loop air circulation system, the closed loop air circulation system, A first flow path disposed between the front surface of the display module and the front surface of the housing and formed along the front surface of the display module, the side surface of the housing facing one side of the display module and one side of the display module; The second flow path and the first flow path provided between the first flow path and the first flow path formed along one side length direction of the display module receive air from the first end of the second flow path and discharge the air to the second end of the second flow path. The open loop air circulation system includes a third flow path that is distinguished from the first flow path and the 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 region 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. A display device is provided.

According to another aspect of the present invention, there is provided a display device further comprising at least one fan provided on the upper or lower portion of the display module, the first flow path receives the air flows into 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 at a rear of the first closed loop air circulation system. Provided is a display device.

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.

Further, 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.

In addition, according to another aspect of the present invention, the display device further comprises a front guide bracket for allowing air to flow from the first flow path to the second flow path, and guides the air of the second flow path to the heat exchanger. To provide.

In addition, according to another aspect of the invention, the heat exchanger provides a display device including an auxiliary guide bracket for guiding the air introduced from the second flow path to the first flow path.

In addition, according to another aspect of the present invention, the heat exchanger provides a display device, characterized in that provided in any one of a heat pipe method, a water cooling method, a thermoelectric module method or a loop heat pipe method.

In addition, according to another aspect of the present invention, the closed loop air circulation system provides a display device, characterized in that sealed from the open loop air circulation system.

In addition, according to another aspect of the invention, the display module, a rear surface, an upper surface provided on the opposite side of the front surface, a lower surface forming a rear surface of the upper surface, a second side provided on the opposite side of the first side and the first side And a side surface, wherein the second flow path is provided on the first side surface and the second side surface of the display module along the side surface of the display module.

The effects of the display device according to the present invention will be described below.

According to at least one of the embodiments of the present invention, there is an advantage that the heat radiation efficiency can be increased.

In addition, according to at least one of the embodiments of the present invention, there is an advantage that 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 the applicability of the present invention will become apparent from the following detailed description. However, various changes and modifications within the spirit and scope of the present invention can be clearly understood by those skilled in the art, and therefore, specific embodiments, such as the detailed description and the preferred embodiments of the present invention, are given by way of example only. Should be.

1 (a) is a conceptual view of the display device according to the present invention viewed from the front, Figure 1 (b) is a side cross-sectional conceptual view of the display device according to the present invention.
2 is a side cross-sectional conceptual 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. 3.
5 is a partial front view of a display device related to the present invention.
6 is a front perspective view of the front guide bracket according to the present invention.
7 is a rear perspective view of the display device related to the present invention.
8 is a cross-sectional conceptual view of a display module.
9 is a side cross-sectional conceptual view of a display device according to still another embodiment related to the present invention.
FIG. 10 is a side cross-sectional view of a display device according to another exemplary embodiment.
11 is a side cross-sectional conceptual view of still another display device according to the present invention.
12 is a side cross-sectional conceptual view of still another exemplary display device according to the present invention.
13 is a side cross-sectional conceptual view of still another exemplary display device according to the present invention.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings, and the same or similar components are denoted by the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or used in consideration of ease of specification, and do not have distinct meanings or roles from each other. In addition, in describing the embodiments disclosed herein, when it is determined that the detailed description of the related known technology may obscure the gist of the embodiments disclosed herein, the detailed description thereof will be omitted. In addition, the accompanying drawings are intended to facilitate understanding of the embodiments disclosed herein, but are not limited to the technical spirit disclosed herein by the accompanying drawings, all changes included in the spirit and scope of the present invention. It should be understood to include equivalents and substitutes.

The display device described herein refers to all devices having an output for outputting an image. Representative examples include digital TVs, analog TVs, desktop computers, and digital signage.

In addition, it may include medium to large output devices such as signage installed in the outdoor-type enclosure.

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

As described above, the present invention has been particularly developed with a focus on display devices such as signages installed in such outdoor enclosures.

FIG. 1 (a) is a conceptual view of the display apparatus 100 according to the present invention as viewed from the front, and FIG.

The display apparatus 100 may largely include a display module 110, a driver 120 for driving the display module 110, a housing 130 for mounting the display module 110 and the driver 120.

For convenience of description, in the display apparatus 100, the z-axis direction in which the display is output is defined as the front and the z-axis opposite direction is defined as the rear.

The display module 110 may be provided at the front of the display apparatus 100, and the driving unit 120 may be stacked behind the display module 110. Therefore, the front or the rear of the display device 100 is defined as the same 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, or may be implemented by an organic light emitting diode (OLED) method or a micro-LED (Micro-LED) method. In the present invention, a description will be given on the assumption of a liquid crystal display system. However, it can be applied to other types of displays as long as there is no contradiction.

The display module 110 may be stacked in the rear in order of a liquid crystal panel, a diffuser, and a backlight unit panel positioned in front of the display apparatus 100.

The driver 120 may include electronic components electrically connected to a drive-IC of the display module 110. For example, it may include a system for supplying a signal for controlling main electronic components of the display apparatus 100 (Sysyem On Chip (SOC)), or a battery for supplying power to the display module 110. have. The driver 120 may include a printed circuit board (PCB), and the components of the driver 120 may be mounted on the printed circuit board.

The housing 130 may form an appearance of the display apparatus 100 and may mount and support the components of the display module 110 and the driver 120.

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

The housing 130 may include an open space 320 that is separated from the closed space 310. The open space 320 may refer to a space circulating outside of the display apparatus 100 and air.

The heat exchanger 200 performs heat exchange to radiate heat generated inside the display apparatus 100 to the outside. For example, the heat exchanger 200 may be implemented as a heat pipe method, a thermoelectric module method, a water cooling method, a loop heat pipe (LHP) method, or the like.

The heat exchanger 200 may be provided on the side of the display apparatus 100 based on the display module 110 or the driver 120.

In the related art, the heat exchanger 200 was generally stacked in the thickness direction, but is provided on the side of the display apparatus 100 to minimize the increase in the overall thickness of the display apparatus 100 due to the provision of the heat exchanger 200. You can.

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

A portion of the closed space 310 and at least one region of 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 to transfer heat from the closed space 310 to the open space 320.

The heat exchanger 200 may be provided on the upper side or the lower side of the housing 130. When the heat exchanger 200 is provided on the upper side, the heat dissipation efficiency may be maximized by using a property in which warm air rises and cold air descends due to a density difference. On the contrary, when the heat exchanger 200 is provided on the lower side, the air flowing in or out of the heat exchanger 200 flows near the bottom surface, thereby minimizing the wind going near the face of a person and causing discomfort.

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

2 is a side cross-sectional conceptual view of a display apparatus 100 according to the present invention.

Based on the state of the display apparatus 100 of the exemplary embodiment shown in FIGS. 1A and 1B, in the present exemplary embodiment, the closed space 310 may be divided 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 having the display module 110 and a second closed space 312 having the driving unit 120. can do.

The diaphragm bracket 140 does not necessarily point to an integral structure, but may comprehensively refer to a structure that divides the first and second closed spaces 311 and 312. The diaphragm bracket 140 may be provided as a single plate-like material vertically across the closed space 310, or may be implemented through a combination of several members.

As an example of the latter, the diaphragm bracket 140 is coupled to each corner of the rear surface of the display module 110 and provided along the lateral circumference of the housing 130 to form the first closed space 311 and the second closed space 312. Can be partitioned

The first closed space 311 and the second closed space 312 partitioned by the diaphragm bracket 140 may 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 the open space 320 for heat dissipation.

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

The front closed loop air circulation system 1 exchanges heat with the open loop air circulation system 3, and the rear closed loop air circulation system 2 also exchanges 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 by the display module 110, and the rear closed loop air circulation system 2 mainly circulates and generates heat generated by the drive unit 120. Serves to release.

Each closed loop air circulation system 1, 2 may be provided with a fan for circulation without heat stagnation and heat exchange with the open loop air circulation system 3, the heat being exchanged with each other via a heat exchanger 200. Can be. Details will be described later.

3 is a partial perspective view of the display apparatus 100 according to the present invention. 4 is a cross-sectional perspective view taken along the line VV 'of FIG. 3. 5 is a partial front view of the display apparatus 100 according to the present invention. For convenience of description, reference is made to FIGS. 3 to 5 together.

In the present embodiment, it is assumed that the heat exchanger 200 is provided at the bottom of the display apparatus 100. However, even if the heat exchanger 200 is provided at another position within a range that does not contradict, the same features described below may be applied.

Front, upper and left and right sides of the display module 110 may be provided to be spaced apart from the inner surface of the housing 130 by a predetermined 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.

The space between the front surface of the display module 110 and the front surface of the housing 130, specifically, the window 131 is the front space A, the upper side of the side of the display module 110 is the upper space B, the display module 110. The left and right of the side of the () is defined as the left and right space (C, D).

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

The first flow path receives air from the first end of the second flow path. The first flow passage discharges the received air to the second end of the second flow passage. The first end of the second flow path means a longitudinal end that is adjacent to the front heat exchanger 200f in the second flow path, and the second end has a longitudinal other end that is spaced apart from the front heat exchanger 200f in the second flow path. Can mean.

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

The front heat exchanger 200f may be provided between the first end of the second flow path and the first flow path. Air dissipates through the front heat exchanger 200f at the first end of the second flow path 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. Part of the front heat exchanger 200f is included in the front closed loop air circulation system 1 and the other part is included in the open loop air circulation system 3. The former is defined as waste oil and the latter is defined as the third flow path. Heat from the waste flow path is transferred to the third flow path.

The waste flow path connects the first end of the second flow path and the first flow path.

The structure and arrangement of the waste flow path and the third flow path may vary according to the manner of the front heat exchanger 200. When the front heat exchanger 200f is provided in a heat pipe manner, the waste flow path may be partitioned on 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 serves to prevent the air from circulating and stagnation of air in the front closed loop air circulation system 1.

The front internal fan 160f may form a flow rate such that air at the first end of the second flow path flows into the first flow path and air of 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 one side where the front heat exchanger 200f is provided.

When the front internal fan 160f is provided between the second end of the second flow path and the first flow path, the front internal fan 160f is close to the first flow path that generates the most heat, which is advantageous for heat dissipation efficiency and may increase the thickness of the display apparatus 100. It does not cover the display output area, so it can be an appropriate position.

From a thermal point of view, most of the heat in the front closed loop air circulation system 1 is generated in the first flow path and passes through the upper space B and then through the second flow path through the heat exchanger 200 to the open loop air circulation system 3. Exit into the third flow path.

In order to disperse heat, the left space C and the right space D of the second flow path may have the same width. Generalizing the characteristics of the flow path in the above-described embodiment, when the heat exchanger 200 is provided as a single unit on the first side of the four sides of the display module 110 of the display device 100, from the heat exchanger 200 The front space A of the display module 110 passes through a first flow path, a second side located opposite to the first side of the four sides, and a third side and a fourth side adjacent to the first side of the four sides. A flow path circulating up to the heat exchanger 200 may be formed. The flow path may be formed by the display module 110, the housing 130, the front guide bracket 150f, and the diaphragm bracket 140.

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

The front guide bracket 150f includes an upper guide bracket 151f corresponding to the upper space B (see FIG. 5), a left and right guide bracket 152f corresponding to the left and right spaces C, D, and FIG. 5, and a front heat exchanger. It may include an outlet guide bracket 153f corresponding to the area in contact with (200f). The upper guide bracket 151f, the left and right guide brackets 152f, and the exit guide bracket 153f may be provided in one piece, but may be provided in an assembly form in which a plurality of parts are fastened or coupled.

The front guide bracket 150f may form a plurality of flow paths 1501 through the partition bracket 151. In particular, when a plurality of front internal fans 160 are provided, a flow path 1501 may be formed in a number corresponding to the number of front internal fans 160f. In the present embodiment, four front internal fans 160f are provided, and a display apparatus 100 having four flow paths 1501 corresponding to each front internal fan 160f is disclosed. In particular, the left space C (see FIG. 5) and the right space D (see FIG. 5) may be formed to have two flow paths 1501, respectively.

Setting the number of flow paths 1501 corresponding to the number of front internal fans 160f of the front closed-loop air circulation system 1 (refer to FIG. 2) is provided with the front internal fan 160f corresponding to each flow path 1501. By doing so, there is an advantage of minimizing room such as turbulence.

Each flow path 1501 may have a plurality of outlets 1502. This is to minimize the possibility of turbulence near the boundary in accordance with the number of inlets of the front heat exchanger (200f). The plurality of outlets 1502 may correspond to the waste passage (see FIG. 3) of the front heat exchanger 200f to allow the air of the second passage to flow therein.

7 is a rear perspective view of the display apparatus 100 according to the present invention. For convenience of description, reference is made to FIGS. 3 to 5.

As described above, heat from the waste flow path 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 air circulation system 3, and the other side may be connected to the outlet 202 of the open air circulation system 3.

The structure of the front heat exchanger 200f may be provided symmetrically with respect to the vertical center of the display apparatus 100. For example, the third flow path of the heat exchanger 200 forms inlets 201 on both left and right sides thereof, and the outlets 202 are located at the center of the display apparatus 100 so that the air flows from the inlet 201. May be provided to exit from the center to exit the outlet 202. This is because the air flow direction of the waste flow path of the heat exchanger 200 and the third flow path are the same for at least one region so that the air flows directly to the air of the third flow path having the lowest temperature.

The waste flow path of the front heat exchanger 200f may diffuse and spread to the front area of the display module 110 at the same time as the air at the first end of the second flow path flows into the first flow path. That is, the waste flow path 200f of the front heat exchanger 200f is distributed to the first flow path rather than moving all of the air at the first end of the second flow path to the center of the display apparatus 100 to flow into the first flow path. It is desirable to prevent the bottleneck from occurring when the air is circulated.

In this case, the outlets 202 may be provided on the lower surface or the rear surface of the display apparatus 100 so that a sufficient flow rate may be formed.

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

As described above, the heat exchanger 200 may be provided by a heat pipe, a thermoelectric module, water cooling, or LHP. The heat of the waste flow path and the third flow path of the heat exchanger 200 may be transferred directly or indirectly through a working fluid in this manner.

The heat pipe heat exchanger 200 is a heat transfer method indirectly by the working fluid. The working fluid receives heat from the closed space 310 in the evaporation zone and moves to the condensation zone due to the pressure difference thereby transferring the transferred heat to the open space 320 to condense and move back to the evaporation zone by capillary force. do.

The thermoelectric module heat exchanger 200 refers to a method in which electrons receive energy and move between two metals having a potential difference, and bring heat in this process.

The water-cooled heat exchanger 200 refers to heat exchange while circulating a refrigerant using a pressure of a pump.

The heat exchanger (LHP) heat exchanger 200 has a structure in which a refrigerant is evaporated by heat in an evaporation region, liquefied by heat exchange with an open space 320 in a condensation region, and then the refrigerant moves and circulates back to the evaporation region. Say.

Reference is again made to FIGS. 2 and 4.

The rear closed loop air circulation system 2 circulates and radiates air in the second closed space 312. The rear closed loop air circulation system 2 is provided compartmentally with 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 may be partitioned by the display module 110, the diaphragm bracket 140 and the housing 130.

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

The rear closed loop air circulation system 2 may have a rear inner 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 circulates. The rear guide bracket 150r may have a plate shape parallel to the rear 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 inner 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 done. Air in the front region 3121 takes heat generated from the driver 120.

4 illustrates an embodiment in which the rear inner fan 160r forms a flow rate from the top to the bottom, but may also form a flow rate from the bottom to the up direction.

Air moved to the rear region 3122 may radiate heat through the rear surface 132 of the housing 130. When the heat dissipation through the rear surface 132 of the housing 130 without a separate heat exchanger, there is an advantage such as the weight of the display device 100, manufacturing cost.

Alternatively, heat may be radiated by heat exchange with the rear heat exchanger 200r.

The rear heat exchanger 200r may be provided on one side of the housing 130 to 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 flow passage of the rear heat exchanger 200r and the heat of the waste flow passage is discharged to the third flow passage of the rear heat exchanger 200r.

The rear heat exchanger 200r may be provided on the same side as the front heat exchanger 200f to 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 a heat pipe manner, the front heat exchanger 200f may include a 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 flow path of the front heat exchanger 200f and the third flow path, and the rear heat pipe 203r (see FIG. 5) passes through the waste flow path of the rear heat exchanger 200r and the third flow path. It can penetrate 3 channels. That is, one region of the front heat pipe 203f (see FIG. 5) and one region 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 to constrain space or reduce manufacturing costs.

In this case, however, the air of the first waste space 311 and the second waste space 312 may not be completely partitioned by the waste flow path of the heat exchanger 200.

FIG. 8 is a cross-sectional conceptual view of the display module 110, and FIGS. 9 and 10 are side cross-sectional conceptual views of a display apparatus 100 according to another exemplary embodiment.

Except for the features described below, the features of the above-described embodiments may be applied in the same manner without being inconsistent.

In the present exemplary embodiment, unlike the exemplary embodiment of FIGS. 1 to 7, air in the first closed space 311 flows into or out of the display module 110.

The display module 110 generates a lot of heat not only between the front surface but also between internal components of the display module 110. In particular, in the case of the liquid crystal display, since a lot of heat is generated due to the light source in the backlight unit panel, a structure for effectively dissipating it is required. In the following exemplary embodiments, the display apparatus 100 having the liquid crystal display is described.

As shown in FIG. 8, the display module 110 includes a liquid crystal panel 111 that directly configures pixels to output a display, a backlight unit panel 113 that provides light from the rear surface of the liquid crystal panel 111, and a liquid crystal panel ( 11) and a backlight unit panel 113 may be configured as a diffuser 112 to spread light emitted from the backlight unit panel 113 evenly onto the liquid crystal panel 111.

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

In order to effectively dissipate heat generated from the display module 110, a flow path penetrating the first space or the second space may be formed. That is, the flow passage may be formed from one side of the first space to the other side or the flow passage may be formed from one side of the second space to the other side.

FIG. 9 illustrates an embodiment in which a flow path that passes through the display module 110 once in the first closed space 311 is configured. FIG. 10 shows the display module 110 in the first closed space 311. An embodiment constituting a flow passage passing through the first time is illustrated.

In the case of 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, the air flows to the side space of the display module 110. It may pass through the display module 110 without reaching the heat exchanger 200.

In the case of forming the flow path penetrating the display module 110, since the flow path does not need to be formed on the left and right sides as in the embodiment of FIGS. 1 to 7, the left and right bezels can be minimized. The heat dissipation efficiency can be increased because it can take away the heat.

10 is based on the premise that the display module 110 is provided in front of the housing 130, that is, in contact with 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. In particular, it may penetrate once between the liquid crystal panel 111 and the diffuser 112 and once between the diffuser 112 and the backlight unit panel 113.

The present embodiment has an advantage in that the heat dissipation of the display module 110 area can be efficiently performed, and at the same time, the window 131 and the display module 110 are not spaced apart from each other to minimize interference with visibility.

11, 12 and 13 are side cross-sectional conceptual views of still another exemplary display apparatus 100 according to the present invention. Except for the features described below, the features of the above-described embodiments may be applied in the same manner without being inconsistent.

Unlike the above-described embodiments, the display apparatus 100 may be provided without the diaphragm bracket 140. When there is no diaphragm bracket 140, the closed space 310 may be configured as one space for heat exchange with the heat exchanger 200 without being partitioned.

If the diaphragm bracket 140 is not present, manufacturing costs for the partitioning and sealing of the first closed space 311 and the second closed space 312 can be reduced, and the display device 100 due to the omission of the diaphragm bracket 140 is omitted. ) It is possible to reduce the overall volume and weight.

However, when the diaphragm bracket 140 is not present, the distance of the flow path reaching the heat exchanger 200 may be longer than that of the heat generating elements of the components including the display module 110 and the driver 120. Therefore, the heat radiation efficiency may be lowered. In order to solve this problem, it is preferable to have a plurality of heat exchangers 200.

In particular, the plurality of heat exchangers 200 may be provided on one side of the display device 100 and the other side of the display device 100 in opposite directions. The heat exchanger 200 may be spaced apart from both sides of the display to maximize heat dissipation efficiency, simplify the flow path structure, and prevent an increase in the thickness of the display apparatus 100.

However, if necessary, the heat exchanger 200 may be provided on one side to form a flow path of the display apparatus 100 (not shown). This can lead to reduced manufacturing costs and minimized volume.

As an example, the flow path includes a front surface of the display module 110, a heat exchanger 200 on one side, a side region of the display module 110, a heat exchanger 200 on the other side, and a rear surface of the display module 110. The rear region, the heat exchanger 200 on one side, the rear rear region of the display module 110 and the heat exchanger 200 on the other side may be configured to reach the front region of the first display module 110 again. Can be.

FIG. 12 has a structure similar to that of FIG. 11, but has a feature of penetrating the display module 110 once. That is, the flow path is the front surface of the display module 110, the heat exchanger 200 on one side, the inner region of the display module 110, the heat exchanger 200 on the other side, the rear rear region of the display module 110, The heat exchanger 200, the rear rear region of the display module 110, and the heat exchanger 200 on the other side may reach the front region of the first display module 110.

FIG. 13 has a structure similar to that of FIG. 12, but has a feature of penetrating the display module 110 twice. The characteristics of this structure is that the heat dissipation efficiency is high because the flow path penetrates between the display modules 110, the visibility is good because the window 131 and the display module 110 are in contact, and the structure is omitted by eliminating the diaphragm bracket. It can have a synergistic effect such as that it can be simplified.

It is apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit and essential features of the present invention.

The foregoing detailed description should not be construed as limiting in all respects, but should be considered as illustrative. The scope of the invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the invention are included in the scope of the invention.

1: Front closed loop air circulation system
2: rear 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: driver
130: housing 131: window
140: diaphragm bracket 150f: front guide bracket
150r: Rear guide bracket 1501: Euro
1502: Euro outlet 151: compartment bracket
160f: front internal fan 160r: rear internal fan
170: external fan 200: heat exchanger
200f: front heat exchanger 200r: rear heat exchanger
201: inlet 202: open space exit
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 in the housing;
Closed loop air circulation system; And
An open loop air circulation system,
The closed loop air circulation system,
A first flow path provided between the front surface of the display module and the front surface of the housing and formed along the front surface of the display module;
A second flow path provided between one side of the display module and one side of the housing facing one side of the display module and formed along a length 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,
The open loop air circulation system,
Providing a third flow path that is distinct from the first flow path and the second flow path,
An inlet 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. According to claim 1,
The housing includes a window covering at least one area of the front surface of the display module,
And the first flow path is provided between the window and the front surface of the display module. According to claim 1,
And at least one fan provided at an upper portion or a lower portion of the display module to allow the first flow path to receive air and flow out to the second flow path. According to claim 1,
The closed loop air circulation system is a first closed loop air circulation system, and further comprising a second closed loop air circulation system provided at a rear of the first closed loop air circulation system. The method of claim 4, wherein
And a diaphragm bracket for partitioning the first closed loop air circulation system and the second closed loop air circulation system. According to claim 1,
And a heat exchanger for transferring heat from the closed loop air circulation system to the open loop air circulation system. The method of claim 6,
And a front guide bracket for allowing air to flow from the first flow path to the second flow path, and guide the air of the second flow path to the heat exchanger. The method of claim 7, wherein
And the heat exchanger includes an auxiliary guide bracket for guiding air introduced from the second flow path to the first flow path. The method of claim 6,
The heat exchanger,
Display device, characterized in that provided in any one of the heat pipe method, water cooling method, thermoelectric module method or loop heat pipe method. According to claim 1,
And the closed loop air circulation system is sealed from the open loop air circulation system. According to claim 1,
The display module,
A rear surface, an upper surface provided on the opposite side of the front surface, a lower surface forming the back surface of the upper surface, a first side surface and a second side surface provided on the opposite side of the first side surface,
The second flow path is provided on the first side and the second side of the display module along the side of the display module. housing;
A display module mounted in the housing;
A front closed loop air circulation system provided between at least one surface of the display module and at least one surface of the housing facing at least one surface 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 outflow the air to the outside; And
A front heat exchanger provided at one side of the housing to transfer heat from the front closed loop air circulation system to the open loop air circulation system,
The closed loop air circulation system,
A first flow path formed along a front surface of the display module; And
A second flow path formed along a 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. delete The method of claim 12,
A driver configured to mount electronic components for driving the display module; And
And a rear closed loop air circulation system mounted to the driving unit and partitioned from the front closed loop air circulation system and disposed at a rear side of the front closed loop air circulation system. The method of claim 14,
The rear closed loop air circulation system includes a rear guide bracket provided in a region between the driving unit and a rear surface of the housing to guide air in the driving region to circulate to the rear surface of the housing. The method of claim 14,
And a rear heat exchanger provided at one side of the housing to transfer heat from the rear closed loop air circulation system to the open loop air circulation system. The method of claim 16,
The front heat exchanger comprises a front heat pipe,
The rear heat exchanger comprises a rear heat pipe,
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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