KR20180046519A - Cooling system of outdoor information display apparatus - Google Patents

Abstract

The present invention relates to a cooling system of an outdoor information display device, which comprises: a protective cover; a display panel; an inlet portion allowing external air to flow thereinto; an outlet portion allowing internal air to be discharged therefrom; a first circulating fan installed in a lower portion of a spacing between the protective cover and a front surface portion of the display panel, and circulating the external air through the spacing; a second circulating fan circulating the external air through a rear surface portion of the display panel; a discharging fan discharging the circulated internal air; a temperature sensing unit sensing the internal temperature; and a control unit controlling operations of the first circulating fan, the second circulating fan, and the discharging fan according to the internal temperature, thereby stably operating even in a high-temperature environment through efficient heat emission and preventing the possibility of a failure in the device caused by the inflow of water such as rainwater, the inflow of foreign substances such as dust, and the like.

Description

[0001] COOLING SYSTEM OF OUTDOOR INFORMATION DISPLAY APPARATUS [0002]

More particularly, the present invention relates to a cooling system for an outdoor information display apparatus, and more particularly, to a cooling system for an outdoor information display apparatus, which can stably operate in a high temperature environment through efficient heat release and has a possibility of device failure due to inflow of water such as rainwater, And more particularly, to a cooling system for an outdoor information display device.

An information display device, also referred to as a smart board or an electronic bulletin board, is a device for receiving a command from a user through a touch interface and outputting information corresponding to the command, And the like.

Typically, a large display is applied to the information display device, and the user is configured to be able to write on the display directly. Therefore, when a presentation is performed in a lecture or a meeting using an information display apparatus, the user stays on one side (e.g., left side, right side) of the electronic board in parallel with the board and explanation, for convenience of explanation.

Since information display devices have many advantages such as diversity of information providing and ease of use, they are increasingly used in all industrial fields, and are used for outdoor lectures or presentations, Traffic information, and the like.

In terms of electronic device operation, outdoor environment is known to be very severe compared to indoor environment.

In particular, direct sunlight due to sunlight in summer and heat in the display itself may cause the temperature inside the display system to exceed 90 ° C. At this time, a blackout phenomenon occurs in the display. When a blackout phenomenon occurs on the display, the screen is displayed in black, so that a character or an image can not be displayed, thereby causing a fatal problem that the display can not function as a display. Such a blackout phenomenon is known to occur mainly due to an increase in the front surface temperature of the display due to direct sunlight.

In addition, when the information display device is used outdoors, there is a possibility that the device may be broken due to inflow of water such as rainwater or foreign matter such as dust.

Korean Registered Patent No. 10-1597973 (registered date: February 22, 2016, name: electronic board device)

The present invention provides a cooling system for an outdoor information display device capable of stably operating in a high temperature environment through efficient heat emission.

In addition, the present invention provides a cooling system for an outdoor information display device capable of preventing the possibility of device failure due to inflow of water such as rainwater or the inflow of foreign matter such as dust.

In order to solve such a problem, a cooling system of an outdoor information display apparatus according to the present invention includes a protective cover of a transparent material installed on a front portion of a housing, a display panel housed in the housing in a state separated from the protective cover, A discharge portion provided at an upper portion of a rear portion of the housing for discharging internal air, a lower portion of a separation region located between the protection cover and the front portion of the display panel, A second circulation fan for circulating outside air introduced through the inlet through a rear portion of the display panel, a second circulation fan for circulating the outside air flowing through the inlet through the rear portion of the display panel, Wherein the air circulated by the first circulation fan and the second circulation fan The second circulation fan, and the discharge fan, depending on the internal temperature of the housing, the temperature sensing unit sensing the internal temperature of the housing, As shown in FIG.

The inlet and the outlet of the cooling system of the outdoor information display device according to the present invention are characterized in that a protective guide for preventing inflow of rainwater from the outside is formed.

The inflow section of the cooling system of the outdoor information display apparatus according to the present invention includes an inflow protection guide extending from a rear portion of the housing and preventing inflow of rainwater from the outside, an inflow inlet formed at a lower portion of the inflow protection guide, And is formed at a position higher than the lower end of the inflow protection guide so as to prevent inflow of rainwater introduced through the outside inflow port into the inside of the housing, An inner inlet for providing a passage for allowing air to flow into the inside of the housing, and an inlet filter installed at the inner inlet to prevent inflow of foreign matter from the outside.

The discharge unit of the cooling system of the outdoor information display apparatus according to the present invention includes a discharge protection guide extending from a rear portion of the housing and preventing inflow of rainwater from the outside, an outer discharge port formed at a lower portion of the discharge protection guide, And is disposed at a position higher than the lower end of the discharge protection guide so as to prevent the rainwater flowing through the outer discharge port from flowing into the interior of the housing, An inner discharge port for providing a passage for discharging to the outside of the housing, and a discharge filter installed at the inner discharge port to prevent the inflow of foreign matter from the outside.

The control unit of the cooling system of the outdoor information display apparatus according to the present invention calculates a time average value of the internal temperature of the housing received from the temperature sensing unit, and when the time average value exceeds the set first temperature threshold, And controls the first circulation fan and the second circulation fan to additionally operate when the time average value exceeds a second threshold value that is higher than the first temperature threshold value.

The control unit of the cooling system of the outdoor information display apparatus according to the present invention includes a matching table storing a time average value of the internal temperature of the housing and a corresponding relationship between the rotation speeds of the first circulation fan, The rotation speed of the first circulation fan, the second circulation fan, and the discharge fan is adaptively controlled with respect to the internal temperature of the housing.

According to the present invention, there is provided an outdoor information display device capable of stably operating in a high temperature environment through efficient heat emission.

In addition, there is an effect that an outdoor information display device capable of preventing the possibility of device failure due to inflow of water such as rainwater or the inflow of foreign matter such as dust or the like is provided.

1 is a conceptual sectional view of a cooling system of an outdoor information display apparatus according to an embodiment of the present invention,
Fig. 2 is an enlarged view of the configuration of the inlet of Fig. 1 according to an embodiment of the present invention,
FIG. 3 is a view for explaining an air inflow and outflow process in an embodiment of the present invention, and FIG.
4 is a diagram for explaining a specific operation of a cooling system of an outdoor information display apparatus according to an embodiment of the present invention.

It is to be understood that the specific structural or functional description of embodiments of the present invention disclosed herein is for illustrative purposes only and is not intended to limit the scope of the inventive concept But may be embodied in many different forms and is not limited to the embodiments set forth herein.

The embodiments according to the concept of the present invention can make various changes and can take various forms, so that the embodiments are illustrated in the drawings and described in detail herein. It should be understood, however, that it is not intended to limit the embodiments according to the concepts of the present invention to the particular forms disclosed, but includes all modifications, equivalents, or alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms may be named for the purpose of distinguishing one element from another, for example, without departing from the scope of the right according to the concept of the present invention, the first element may be referred to as a second element, The component may also be referred to as a first component.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like are used to specify that there are features, numbers, steps, operations, elements, parts or combinations thereof described herein, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning of the context in the relevant art and, unless explicitly defined herein, are to be interpreted as ideal or overly formal Do not.

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

FIG. 1 is a conceptual sectional view of a cooling system of an outdoor information display apparatus according to an embodiment of the present invention. FIG. 2 is an enlarged view of the configuration of an inlet of FIG. 1 in an embodiment of the present invention, 3 is a view for explaining an air inflow and outflow process in an embodiment of the present invention.

1 to 3, a cooling system of an outdoor information display apparatus according to an embodiment of the present invention includes a housing 5, a protective cover 10, a display panel 20, an inlet 30, A first circulation fan 52, a second circulation fan 54, a discharge fan 56, a temperature sensing unit 80, and a control unit 100. The first circulation fan 52, the second circulation fan 54,

The housing 5 is a means for receiving the components of the outdoor information display device and constituting the appearance of the device. In the drawings, the housing 5 is described as having a rectangular parallelepiped shape, but this is only an example, and the housing 5 may be configured to have various appearance as required. The front portion of the housing 5 is the housing 5 on the side where the display panel 20 is installed or the user is located and the rear portion of the housing 5 is the housing 5 on the opposite side, to be. The housing 5 has a front surface formed with an opening for exposing a screen provided by the display panel 20 to the user so as to have a shape corresponding to the shape of the display panel 20, An inlet portion 30 for providing a passage through which the outside air flows into the housing 5 and a discharge portion 40 for discharging the inside air of the housing 5 to the outside are formed on the rear surface portion of the housing 5.

The protective cover 10 is installed in an opening formed in the front surface of the housing 5 and functions to protect components including the display panel 20 from external physical factors. The protective cover 10 may be made of various materials having a transparent material, for example, a glass may be applied as the protective cover 10.

The display panel 20 is housed in the housing 5 in a state of being separated from the protective cover 10 and performs a function of visually providing information to the user under the control of the controller 100. The first circulation fan 52 to be described later circulates the outside air through the spacing region A so that the display panel 20 Circulates the heat present on the side of the front side of the heat exchanger and discharges it to the outside.

The inlet portion 30 is provided at a lower portion of the rear portion of the housing 5 and provides a passage through which the outside air flows into the housing 5 and the outlet portion 40 is provided at the upper portion of the rear portion of the housing 5 And provides a passage through which the inside air is discharged to the outside.

For example, the inlet 30 and the outlet 40 may be formed with protective guides 310 and 410 for preventing inflow of rainwater from the outside.

3, the inlet 30 may include an inlet protection guide 310, an outer inlet 320, an inner inlet 330, and an inlet filter 340.

The inflow protection guide 310 extends downward from the rear portion of the housing 5 toward the ground, and functions to prevent inflow of rainwater from the outside.

The outer inflow port 320 is an opening area formed in the lower portion of the inflow protection guide 310 and is an area through which the outside air primarily flows when the air is introduced into the housing 5.

The inner inlet port 330 is located on the inner side of the housing 5 with respect to the outer inlet port 320 and at a position higher than the lower end of the inlet protection guide 310. If there is a step H between the inner inlet 330 and the lower end of the protection guide, the rainwater falling down to the ground due to gravity can be introduced through the outer inlet 320 by an external force such as wind. However, The rainwater flowing through the outside inlet 320 can not flow into the interior of the housing 5 against gravity. That is, the function of preventing the rainwater flowing through the outer outlet 420 from flowing into the interior of the housing 5 is performed. In addition, the inner inlet port 330 functions to provide a passage through which the outside air introduced through the outer inlet port 320 flows into the interior of the housing 5.

The inflow filter 340 is installed in the inner inflow port 330 and functions to prevent inflow of foreign matter from the outside.

The discharge portion 40 may be configured to have substantially the same or similar structure as the inlet portion 30 and the enlarged representation of the inlet portion 30 may be referred to the description of the discharge portion 40. [

For example, the outlet 40 may include an outlet protection guide 410, an outer outlet 420, an inner outlet 430, and a drain filter 440.

The discharge protection guide 410 extends downward from the rear portion of the housing 5 and functions to prevent infiltration of rainwater from the outside.

The outer discharge port 420 is formed at the lower portion of the discharge protection guide 410 and provides a final path through which the inner air of the housing 5 is discharged to the outside.

The inner discharge port 430 is located inside the outer discharge port 420 and is formed at a position higher than the lower end of the discharge protection guide 410. The inner discharge port 430 prevents the rainwater flowing through the outer discharge port 420 from flowing into the interior of the housing 5 and allows the air inside the housing 5 to flow through the outer discharge port 420 to the housing 5 To the outside of the apparatus.

The discharge filter 440 is installed in the inner discharge port 430 and functions to prevent foreign matter from entering from the outside.

The first circulation fan 52 is installed at a lower portion of the separation area A positioned between the protective cover 10 and the front part of the display panel 20 and is configured to receive outside air flowing through the inflow part 30 And performs a function of circulating through the spacing region. When the first circulating fan 52 circulates the outside air flowing through the inlet 30 through the spacing area, the heat in the space A, i.e., the space on the front side of the display panel 20, Circulated and discharged to the outside.

The second circulation fan 54 functions to circulate the outside air introduced through the inlet 30 through the rear portion of the display panel 20. That is, the second circulation fan 54 circulates the heat in the rear space of the display panel 20, that is, the space between the display panel 20 and the control unit 100, and discharges the heat to the outside. For example, the second circulating fan may be installed at any position between the inlet 30 and the first circulating fan 52, but preferably, the second circulating fan is disposed between the inlet 30 and the display panel (Not shown).

The discharge fan 56 discharges the air circulated through the first circulation fan 52 and the second circulation fan 54 through the discharge unit 40. For example, the discharge fan 56 may be installed at a position adjacent to the discharge portion 40, but the installation position thereof is not limited thereto.

The temperature sensing unit 80 senses the internal temperature of the housing 5. For example, the temperature sensing unit 80 may be installed on the rear surface of the display panel 20, but the mounting position is not limited thereto.

The control unit 100 controls the operations of the first circulation fan 52, the second circulation fan 54 and the discharge fan 56 according to the internal temperature of the housing 5 sensed and transmitted by the temperature sensing unit 80 And controls the overall operation of the outdoor information display device.

For example, the control unit 100 calculates a time average value of the internal temperature of the housing 5 received from the temperature sensing unit 80. When the time average value exceeds the set first temperature threshold value, And controls the first circulation fan 52 and the second circulation fan 54 to additionally operate when the time average value exceeds a second threshold value higher than the first temperature threshold.

For example, the control unit 100 calculates the time average of the internal temperature of the housing 5 and the corresponding relationship between the rotation speeds of the first circulation fan 52, the second circulation fan 54, and the discharge fan 56 The rotation speed of the first circulation fan 52, the second circulation fan 54 and the discharge fan 56 may be adaptively controlled with respect to the internal temperature of the housing 5 have.

As described above, unnecessary noise can be prevented and power consumption can be minimized by driving only the required fan or controlling the rotating speed of the fan while driving according to the internal temperature level of the housing 5.

4 is a diagram for explaining a specific operation of a cooling system of an outdoor information display apparatus according to an embodiment of the present invention.

4, in step S10, the process of starting the operation of the cooling system of the outdoor information display device is performed. For example, this process can be performed by the user pressing the power button.

In step S20, the temperature sensing unit 80 senses the internal temperature of the housing 5 and transmits the sensed temperature to the controller 100. [

In step S30, a process of calculating the time average value of the internal temperature of the housing 5, which the control unit 100 receives from the temperature sensing unit 80, is performed.

In step S40, a process of determining whether the calculated time average value exceeds a set first temperature threshold value is performed. As a result of the determination in step S40, if the time average value exceeds the first temperature threshold, the process proceeds to step S50. If the time average value does not exceed the first temperature threshold, the process proceeds to step S20 to continuously detect the internal temperature do.

In step S50, a process of controlling the operation of the discharge fan 56 by the control unit 100 is performed.

In step S60, a process of determining whether the time average value exceeds a second temperature threshold set by the controller 100 is performed. The second temperature threshold is a temperature higher than the first temperature threshold, and as a result of the determination in step S60, if the time average value exceeds the second temperature threshold, the process proceeds to step S70, and if the time average value does not exceed the second temperature threshold The process proceeds to step S20.

In step S70, the control unit 100 controls the operation of the first circulation fan 52 and the second circulation fan 54 in addition to the discharge fan 56. [

As described above in detail, according to the present invention, there is provided an outdoor information display device capable of stably operating in a high temperature environment through efficient heat emission.

In addition, there is an effect that an outdoor information display device capable of preventing the possibility of device failure due to inflow of water such as rainwater or the inflow of foreign matter such as dust or the like is provided.

5: Housing
10: Protective cover
20: Display panel
30:
40:
52: First circulating fan
54: Second circulation fan
56: Exhaust fan
80: Temperature sensing unit
100:
310: Inlet Protection Guide
320: outer inlet
330: Inner inlet
340: Inflow filter
410: Emission protection guide
420: Outside outlet
430: Inner outlet
440: Discharge filter

Claims (6)

A transparent protective cover provided on a front surface of the housing;
A display panel housed in the housing in a state of being separated from the protective cover;
An inflow portion installed at a lower portion of a rear portion of the housing and introducing outside air;
A discharge unit provided at an upper portion of a rear portion of the housing and discharging internal air;
A first circulation fan installed at a lower portion of the separation area located between the protective cover and the front panel of the display panel and circulating outside air flowing through the inlet through the separation area;
A second circulation fan for circulating outside air flowing through the inflow portion through a rear portion of the display panel;
A discharge fan for discharging the air circulated by the first circulation fan and the second circulation fan through the discharge unit;
A temperature sensing unit for sensing an internal temperature of the housing; And
And a control unit for controlling an operation timing and a rotating speed of the first circulation fan, the second circulation fan, and the discharge fan according to an internal temperature of the housing, which the temperature sensing unit delivers. The method according to claim 1,
Wherein the inflow portion and the discharge portion are formed with a protection guide for preventing inflow of rainwater from the outside. The method according to claim 1,
Wherein:
An inflow protection guide extending from a rear portion of the housing and preventing inflow of rainwater from the outside;
An outer inflow port formed in a lower portion of the inflow protection guide;
The rainwater flowing through the outer inflow port is prevented from flowing into the inside of the housing, the rainwater flowing into the outer inflow port is prevented from flowing into the inside of the housing, An inner inlet for providing a passage through which the outside air introduced through the housing is introduced into the housing; And
And an inflow filter installed at the inner inflow port to prevent inflow of foreign matter from the outside. The method according to claim 1,
The discharge portion
A discharge protection guide extending from a rear portion of the housing and preventing inflow of rainwater from the outside;
An outer discharge port formed at a lower portion of the discharge protection guide;
The air outlet is formed at a position higher than the lower end of the discharge protection guide to prevent rainwater flowing through the outer outlet from flowing into the interior of the housing, An inner discharge port for providing a passage for discharging to the outside of the housing via an outlet; And
And a discharge filter installed at the inner discharge port to prevent the inflow of foreign matter from the outside. The method according to claim 1,
The control unit
Calculating a time average value of the internal temperature of the housing received from the temperature sensing unit,
Controls the exhaust fan to operate when the time average value exceeds a first temperature threshold,
Wherein the controller controls the first circulation fan and the second circulation fan to additionally operate when the time average value exceeds a second threshold value that is higher than the first temperature threshold. The method according to claim 1,
The control unit
The first circulation fan, the second circulation fan, and the second circulation fan, with reference to a matching table storing a time average of the internal temperature of the housing and a correspondence relationship between the rotation speeds of the first circulation fan, Wherein the controller controls the rotation speed of the fan and the discharge fan to adaptively control the internal temperature of the housing.

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