WO2022220312A1

WO2022220312A1 - Display device having enhanced cooling function

Info

Publication number: WO2022220312A1
Application number: PCT/KR2021/004589
Authority: WO
Inventors: 이준구; 정재원
Original assignee: 이준구
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2022-10-20

Abstract

The present invention relates to an outdoor display device having an enhanced cooling function, the outdoor display device comprising: glass optically bonded to the front surface of a display panel; and a pair of air discharge parts disposed on both lateral sides of the glass so as to face each other, and discharging air to form an air flow space on the glass surface. The discharged air cools the glass surface by flowing over the glass surface and lowering the temperature of the glass surface.

Description

Display device with improved cooling function

The present invention relates to a display technology with an improved cooling function, and more particularly, by implementing a direct cooling function of the display surface part, the reliability of the product through improvement of cooling efficiency is improved, and the user's touch environment is improved to improve the convenience of the touch function and It relates to a display device having an improved cooling function that can protect the glass surface from the risk of infection.

In general, an outdoor display device, which is an advertisement device used outdoors, has a problem in that a malfunction occurs and the product life is shortened due to a temperature increase in the front part of the display panel and the inside of the product due to heat generated from the inside and direct sunlight.

For example, when sunlight directly enters the front part of an LCD display panel of 40 inches or more at an ambient temperature of 40 degrees, the temperature of the display surface (screen) rises to 90 degrees or more, so when the display surface is exposed to sunlight for a long time, the lifespan of the display device results in a sharp decrease in

Accordingly, most outdoor display devices are installed on the wall of a building where sunlight is not incident to prevent sunlight from directly entering the front of the display, or have a separate protective film installed outside to avoid sunlight.

However, there are disadvantages in that the visibility of the display device is obstructed, the installation cost is increased, and the operating efficiency according to the limitation of the installation place is lowered.

Recently, technologies have been proposed for mechanically implementing a cooling function in a display device so that it can stably operate even in a high-temperature environment through heat dissipation. An example thereof is shown in FIG. 1 .

1 is a view showing a cooling structure in a conventional display device.

As shown in FIG. 1 , the conventional display device 1 accommodates a display panel (LCM) 20 inside the housing 10 , and the display panel (LCM) 20 includes the front and rear surfaces of the housing 10 . and spaced apart to form an air circulation space. At this time, the display panel (LCM) 20 is combined with the upper end of the housing 10 so that the glass 30 is disposed on the front of the display panel (LCM) 20 to implement a sealed waterproof structure that is completely blocked from the outside.

A fan 40 is installed in the enclosed space within the enclosure 10 to blow air in the enclosure 10 into the space between the front of the enclosure 10 and the front of the display panel (LCM) 20 , the side of the enclosure 10 and Cooling is performed by circulating the space between the side surfaces of the display panel (LCM) 20 and the space between the rear surface of the housing 10 and the rear surface of the display panel (LCM) 20 .

However, since the air circulated in the enclosed space inside the enclosure has a higher temperature than the outside air, to ensure the reliability of the display panel (LCM) and various components inside the enclosure, increase the number of cooling fans or A high-capacity cooling fan must be used, which in turn leads to an increase in equipment failure rate and equipment price.

Recently, in order to increase cooling efficiency, there is a method to increase cooling efficiency by artificially injecting cold air into the interior of the enclosure by treating the external air conditioner. cause problems

On the other hand, when the display device is implemented as a touch screen, the user directly touches the glass surface to operate it. At this time, the touch glass surface is exposed to the outside, so foreign substances such as yellow sand, dust, and rain water are easy to attach, causing contamination and discomfort to the user. do. Recently, bacterial infection through touch glass surfaces has emerged as a social issue. Therefore, conventionally, although the antibacterial function is inherent in the touch glass, the reliability and function of the antibacterial function are weak, and the glass surface temperature is quite high due to direct sunlight, which causes inconvenience to the user's touch operation, which also reduces the operating efficiency of the outdoor display device. act as a depressing factor.

[Prior art literature]

[Patent Literature]

1. Korean Patent Publication No. 10-0747848 (2007.08.02)

2. Korean Patent Publication No. 10-1315465 (2013.09.26)

An embodiment of the present invention is to provide a display device with an improved cooling function that can improve the touch environment as well as the cooling efficiency by implementing a direct cooling function of the display surface portion.

One embodiment of the present invention can increase the cooling efficiency through a cooling structure that can directly lower the temperature of the glass surface by discharging outside air, not the hot air inside the enclosure, from both sides of the front of the display panel, so that the air flows along the surface of the glass. An object of the present invention is to provide a display device having an improved cooling function that is installed on the display surface and is easy to maintain.

An embodiment of the present invention forms a touch recognition space in a predetermined space spaced apart from the touch glass surface to provide a non-contact glass surface touch function that enables touch operation without direct contact with the touch glass surface, thereby relieving the user's discomfort and An object of the present invention is to provide a display device with an improved cooling function that can protect against the risk of infection.

Among the embodiments, the display device with the improved cooling function is disposed opposite to the glass optically bonded to the front surface of the display panel, and both sides of the glass, as long as the air is discharged to form an air flow space on the glass surface It includes a pair of air discharge units, characterized in that the discharged air is cooled by lowering the temperature of the glass surface while flowing along the glass surface.

The pair of air discharging units are disposed opposite to both sides of at least one of the upper and lower and left and right sides of the glass, and a plurality of air nozzles for discharging air and a plurality of discharging air nozzles to directly radiate the air to the surface of the glass. It may include outlets.

The plurality of outlets may be formed in a thin and long bar shape, and at least one or more outlets may be arranged in a line on each of opposite surfaces.

The plurality of outlets may be formed in a circular or square shape of micropores, and a plurality of outlets may be arranged in a line at regular intervals on each of opposite surfaces.

Among the embodiments, the display device with improved cooling function is disposed to face the front surface of the display panel and optically bonded touch glass, at least one of upper and lower and left and right sides of the touch glass, and discharging air to the touch glass surface A pair of air outlets forming an air flow space in the infrared ray for recognizing a touch in the air flow space by being spaced apart from the touch glass on the side of the touch glass and disposed on the upper surface of the pair of air outlets It characterized in that it includes a touch sensor unit, and cools by lowering the temperature of the touch glass surface while the discharged air flows along the touch glass surface, and provides a non-contact touch to the glass surface by the touch of the air flow space.

The pair of air outlets each include an air nozzle for spraying air and a plurality of outlets for discharging the air sprayed from the air nozzle toward the surface of the touch glass, and the discharged air touches the touch by natural convection. The touch glass surface may be cooled while flowing over the glass surface.

The infrared touch sensor unit has a transmitting member and a receiving member disposed to face each other on upper and lower left and right sides of the touch glass, and a plurality of light emitting devices are disposed on the transmitting member at regular intervals to transmit an infrared signal, and a plurality of light emitting devices are disposed on the receiving member. of the light receiving elements are disposed at regular intervals to face the plurality of light emitting elements to receive the infrared signal to form a lattice-shaped touch space in the air flow space.

The infrared touch sensor unit may recognize a touch in a predetermined space corresponding to the thickness of the pair of air outlets from the touch glass surface.

The disclosed technology may have the following effects. However, this does not mean that a specific embodiment should include all of the following effects or only the following effects, so the scope of the disclosed technology should not be construed as being limited thereby.

The display device with the improved cooling function according to an embodiment of the present invention implements a direct cooling function of the display surface portion, thereby improving cooling efficiency and improving the touch environment, thereby improving reliability and user convenience in outdoor environments. and can be used stably for a long time.

The display device with the improved cooling function according to an embodiment of the present invention discharges outside air, not the hot air inside the enclosure, from both sides of the front part of the display panel so that the air flows along the glass surface and comes into contact with the outside air to temperature the glass surface. By making it possible to directly lower the cooling efficiency, it is possible to reduce costs and facilitate maintenance.

The outdoor display device with improved cooling function according to an embodiment of the present invention forms a touch recognition space in a predetermined space spaced apart from the touch glass surface, so that a touch operation is possible without directly touching the touch glass surface with a hand. By providing the touch function of the user, it is possible to relieve the user's discomfort and protect it from the risk of infection.

1 is a view showing a cooling structure in a conventional display device.

2 is a view for explaining a display device having an improved cooling function according to an embodiment of the present invention.

FIG. 3 is a view for explaining a cooling structure in the display device of FIG. 2 .

4 is a view for explaining a case in which a display device having an improved cooling function according to an embodiment of the present invention is applied to a touch screen.

FIG. 5 is a view for explaining a cooling and non-contact glass surface touch structure in the touch screen device of FIG. 4 .

Since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiment described in the text. That is, since the embodiment may have various changes and may have various forms, it should be understood that the scope of the present invention includes equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only such effects, it should not be understood that the scope of the present invention is limited thereby.

On the other hand, the meaning of the terms described in the present application should be understood as follows.

Terms such as “first” and “second” are for distinguishing one component from another, and the scope of rights should not be limited by these terms. For example, a first component may be termed a second component, and similarly, a second component may also be termed a first component.

When a component is referred to as being “connected to” another component, it may be directly connected to the other component, but it should be understood that other components may exist in between. On the other hand, when it is mentioned that a certain element is "directly connected" to another element, it should be understood that the other element does not exist in the middle. On the other hand, other expressions describing the relationship between elements, that is, "between" and "between" or "neighboring to" and "directly adjacent to", etc., should be interpreted similarly.

The singular expression is to be understood as including the plural expression unless the context clearly dictates otherwise, and terms such as "comprises" or "have" refer to the embodied feature, number, step, action, component, part or these It is intended to indicate that a combination exists, and it should be understood that it does not preclude the possibility of the existence or addition of one or more other features or numbers, steps, operations, components, parts, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Terms defined in the dictionary generally used cannot be construed as having an ideal or excessively formal meaning unless explicitly defined in the application.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. It is apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention.

Referring to FIG. 2 , the display device 100 with improved cooling function according to an embodiment of the present invention includes a display panel 110 and a glass 120 and glass 120 disposed on the front of the display panel 110 . may include a pair of

air discharge units

130a and 130b respectively disposed on both sides of the .

The display panel 110 may be installed in an internal space of a housing (not shown) forming an exterior, and the glass 120 may be installed on the top. In an embodiment, the glass 120 may be installed on the panel edge frame and disposed on the front side of the display panel 110 . In this case, the glass 120 may be optically bonded to the front surface of the display panel 110 . That is, the installation portion of the glass 120 , for example, an approximately 1 mm space between the glass 120 and the panel edge frame is adhered with a transparent adhesive member such as silicon to the front surface of the display panel 130 and the glass 120 . Optical bonding can be done between them. Here, the front surface of the display panel 110 and the optically bonded glass 120 may correspond to the display screen.

The optical bonding bonding method can have the effect of increasing the visibility of the display screen, protecting the front of the display device from external impact, preventing frost and condensation, and improving the heat dissipation efficiency by directly exposing the front of the display to outside air. The invention has the effect of further increasing the cooling efficiency by applying the direct cooling technology to the directly exposed front (screen) part of the display.

A pair of

air discharge units

130a and 130b may be disposed to face each other on the front surface of the display panel 110 and both sides of the bonded glass 120 . In an embodiment, the pair of

air discharge units

130a and 130b are disposed opposite to the left and right sides of the display screen, but the present invention is not limited thereto and may be disposed to face both upper and lower sides of the display screen, and the upper and lower and left and right sides of the display screen You can also place them all opposite to each other on the sides.

In an embodiment, the pair of

air discharge units

130a and 130b may be formed to have a predetermined thickness so as not to obstruct visibility by covering the display screen. Here, the pair of

air discharge units

130a and 130b may be implemented as air nozzles for jetting air. The air nozzle may be in the form of a thin, long pipe having a thickness d of less than approximately 10 mm.

The pair of

air discharge units

130a and 130b may form a plurality of discharge ports 131 on opposite surfaces to discharge air to be directly radiated to the surface of the glass 120 . In one embodiment, the plurality of outlets 131 are formed as micropores to discharge air at a specific pressure so that the discharged air may flow along the surface of the glass 120 . Here, the shape of the plurality of outlets 131 may be a small circular shape or various shapes having a long and thin area.

Since the air flowing on the surface of the glass 120 is external natural convection air and has a lower temperature than the air inside the enclosure, cooling efficiency can be increased.

Referring to FIG. 3 , a pair of

air outlets

130a and 130b are disposed to face each other on the front surface of the display panel 110 accommodated in the housing and both sides of the bonded glass 120 on the surface of the glass 120 . It is possible to form an air flow space (S) in the. At this time, as the glass 120 is optically bonded to the front surface of the display panel 110 to form an air flow space S as a whole from the front top to the bottom of the display panel 110 , the temperature of the surface portion where sunlight is directly introduced can be lowered by airflow.

The air nozzles 133 each forming a pair of

air discharge units

130a and 130b may be configured as thin and long pipe nozzles, and the glass 120 is disposed along the edge of the panel edge frame on which the glass 120 is installed. It can be installed on both sides of the center. In this case, the plurality of discharge ports 131 communicating with the air nozzle 133 may be installed to face the surface of the glass 120 .

In one embodiment, the air nozzle 133 may form an air flow space (S) on the surface of the glass 120 by discharging air to the plurality of outlets 131 by spraying the air. In an environment in which sunlight is directly introduced into the front of the display to increase the temperature of the display device 100 , external cold air discharged through the plurality of outlets 131 rides on the surface of the hot glass 120 . The surface of the glass 120 may be cooled. The cooled glass 120 cools the front surface of the optically bonded display panel 110 to lower the heat generation temperature of the display panel 110 and other components disposed inside the housing. Accordingly, outdoor installation of the display apparatus 100 according to an embodiment is possible without restrictions on the installation location.

Referring to FIG. 4 , the touch screen device 200 according to an embodiment is spaced apart from the display panel 210 , the touch glass 220 disposed on the front of the display panel 210 , and the side of the touch glass 220 . A pair of

air discharge units

230a and 230b and an infrared touch sensor unit 240 are disposed.

The display panel 210 may be installed in an internal space of a housing (not shown) forming an exterior, and a touch glass 220 may be disposed on the front side. In one embodiment, the display panel 210 may be an LCD panel and the front surface of the display panel 210 may correspond to a display surface portion.

The touch glass 220 may be installed on an external device or panel edge frame of the housing and disposed in front of the display panel 210 . In an embodiment, the touch glass 220 may be optically bonded to the front surface of the display panel 210 . A pair of

air discharge units

230a and 230b and an infrared touch sensor unit 240 may be disposed on the side of the touch glass 220 .

The pair of

air discharge units

230a and 230b are disposed to face the front surface of the display panel 210 and both sides of the optically bonded touch glass 220 and discharge air to the surface of the touch glass 220 . may form an airflow space in the In an embodiment, the pair of

air outlets

230a and 230b may be disposed to face at least one of upper and lower sides and left and right sides of the touch glass 220 . Here, the pair of

air outlets

230a and 230b may form a plurality of outlets 231 on opposite surfaces at regular intervals to discharge air to be directly radiated to the surface of the touch glass 220 .

In one embodiment, the plurality of outlets 231 may be implemented in a long and thin bar shape as shown in FIG. 4 so that air can be uniformly discharged at a constant speed over the entire surface of the touch glass 220 and At least one or more may be arranged in a line on each of the opposite surfaces. The shape of the plurality of outlets 231 is not limited thereto, and as shown in FIG. 2 , the shape of the micropores may be implemented in a circular shape or a square shape, and a plurality of outlets 231 may be arranged in a line at regular intervals on each of the opposite surfaces.

The air discharged through the plurality of outlets 231 is air outside the enclosure, and the temperature is relatively low compared to the air inside the enclosure, so it flows along the surface of the touch glass 220 and lowers the temperature of the touch glass 220 to cool and cool it. The front portion of the touch glass 220 and the optically bonded display panel 210 may be cooled.

In one embodiment, the pair of

air outlets

230a and 230b may each include an air nozzle in the form of a thin and long pipe communicating with the plurality of outlets 231 . At this time, when the discharge height of the air injected from the air nozzle is 5 mm to 10 mm from the surface of the touch glass 220, the cooling efficiency of the glass surface becomes the highest.

The infrared touch sensor unit 240 may be installed to be spaced apart from the side surface of the touch glass 220 , and the pair of

air discharge units

230a and 230b may be installed in close contact with the glass surface. In this case, the pair of

air discharge units

230a and 230b may be set to a predetermined thickness d in consideration of the touch function of the touch screen. In one embodiment, the infrared touch sensor unit 240 may be spaced apart from the surface of the touch glass 220 by the thickness d of the pair of

air discharge units

230a and 230b to form a touch space. For example, when the thickness of the pair of

air outlets

230a and 230b is less than 10 mm, the touch space is formed in a predetermined space (<10 mm) within a height of 10 mm from the surface of the touch glass 220 . In this case, through the touch space formed on the surface of the touch glass 220 , the user can recognize a touch only by touching the touch space without directly touching the surface of the touch glass 220 . Here, the touch space may be freely set without being specified to fit the user environment.

Therefore, the touch can be recognized without direct contact with the surface of the touch glass 220 that is directly exposed to the outside and directly introduced by sunlight, which has a high temperature and contains contaminants, providing a non-contact glass surface touch function. can do.

Referring to FIG. 5 , a pair of

air outlets

230a and 230b are disposed to face each other on both sides of the optically bonded touch glass 220 and the front of the display panel 210 accommodated in the housing, so that the touch glass 220 ) can form an air flow space (S) on the surface. In this case, an air flow space S may be formed as a whole from the top to the bottom of the surface of the touch glass 220 , and the temperature of the surface portion into which sunlight is directly introduced may be lowered by the air flow.

The air nozzles 233 forming the pair of

air discharge units

230a and 230b, respectively, may be configured as thin and long pipe nozzles, and may be installed on both sides of the touch glass 220 . A plurality of outlets 231 may be formed in the air nozzle 233 at regular intervals toward the surface of the touch glass 220 .

In one embodiment, the air nozzle 233 may eject air to a plurality of outlets 231 , and may form an air flow space S on the surface of the touch glass 220 . Here, the air flow space (S) is a space in which the air discharged from the plurality of outlets 231 flows along the surface of the touch glass 220 to cool the surface of the touch glass 220 and may correspond to a touch recognition space. have.

The external air discharged from the plurality of outlets 231 may flow along the surface of the touch glass 220, and may cool the touch screen surface (screen) part to a temperature lower than the internal air of the enclosure, and thus the installation place Outdoor installation of the touch screen device 200 according to an embodiment is possible without any restrictions.

The infrared touch sensor unit 240 may be disposed to be spaced apart from the side surface of the touch glass 220 and disposed on the pair of

air discharge units

230a and 230b. In one embodiment, in the infrared touch sensor unit 240 , the transmitting

members

241a and 243a and the receiving

members

241b and 243b may be disposed to face each other on upper and lower and left and right sides of the touch glass 220 . The transmitting

members

241a and 243a may have a plurality of light emitting devices disposed at regular intervals to transmit the infrared signal L.

The receiving members

241b and 243b may be disposed at regular intervals so that the plurality of light receiving elements face the plurality of light emitting elements to receive the infrared signal L. Here, the infrared touch sensor unit 240 may be spaced apart from the surface of the touch glass 220 to implement a grid-shaped touch space in the air flow space S, and in this case, a touch may be recognized through a user's spatial touch.

The display device with the improved cooling function according to an embodiment can directly cool the glass surface disposed on the front side of the display panel to lower the temperature of the display surface where sunlight is directly introduced, thereby solving the restriction of the installation place, , it is possible to solve the inconvenience caused by the user's direct contact with the glass surface by forming a touch space in a predetermined space spaced apart from the touch glass surface of the touch screen.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto. is within the scope of the right.

[Explanation of code]

100: display device with improved cooling function

110: display panel

120: glass

130a, 130b: air outlet

131: plurality of outlets

133: air nozzle

200: touch screen device

210: display panel

220: touch glass

230a, 230b: air outlet

231: plurality of outlets

233: air nozzle

240: infrared touch sensor unit

241a, 243a: transmission member

241b, 243b: receiving member

S: Airflow space (touch space)

Claims

Glass optically bonded to the front of the display panel; and

and a pair of air outlets disposed opposite to each other on both sides of the glass and discharging air to form an air flow space on the surface of the glass,

A display device with an improved cooling function, characterized in that the discharged air is cooled by lowering the temperature of the glass surface while flowing along the glass surface.
The method of claim 1, wherein the pair of air outlets

and an air nozzle disposed opposite to at least one of the upper and lower and left and right sides of the glass, and a plurality of outlets for discharging the air sprayed from the air nozzle to be directly radiated to the glass surface. Display device with improved cooling function.
The method of claim 2, wherein the plurality of outlets are

A display device with an improved cooling function, characterized in that at least one is formed in a thin and long bar shape and arranged in a line on each of opposite surfaces.
The method of claim 2, wherein the plurality of outlets are

A display device with improved cooling function, characterized in that a plurality of micropores are formed in a circle or square shape and are arranged in a row at regular intervals on each of opposite surfaces.
a touch glass that is optically bonded to the front of the display panel;

a pair of air discharge units disposed to face at least one of upper and lower left and right sides of the touch glass and configured to discharge air to form an air flow space on the surface of the touch glass; and

and an infrared touch sensor unit disposed to be spaced apart from the touch glass on the side of the touch glass and disposed on the upper surface of the pair of air outlets to recognize a touch in the air flow space,

A display device with an improved cooling function, characterized in that the discharged air flows along the touch glass surface and cools it by lowering the temperature of the touch glass surface, and provides a non-contact touch on the glass surface by touching the air flow space.
The method of claim 5, wherein the pair of air outlets

Each of the air nozzles for spraying air and a plurality of outlets for discharging the air sprayed from the air nozzles toward the surface of the touch glass,

The display device with improved cooling function, characterized in that the discharged air flows along the touch glass surface by natural convection to cool the touch glass surface.
The method of claim 5, wherein the infrared touch sensor unit

The transmitting member and the receiving member are disposed to face each other on the upper and lower and left and right sides of the touch glass, a plurality of light emitting devices are disposed at regular intervals on the transmitting member to transmit an infrared signal, and a plurality of light receiving devices are provided to the receiving member A display device with an improved cooling function, which is arranged at regular intervals to face a plurality of light emitting elements and receives the infrared signal to form a lattice-shaped touch space in the air flow space.
The method of claim 7, wherein the infrared touch sensor unit

A display device with an improved cooling function, characterized in that the touch is recognized in a predetermined space corresponding to the thickness of the pair of air outlets from the touch glass surface.