KR101892289B1 - SMPS/SCU Assembled Type LED Display - Google Patents

Abstract

The present invention provides an LED display device which can be used in water. According to the present invention, the LED display device for integrating a switch mode power supply (SMPS) and a switch control unit (SCU) comprises: a display assembly wherein display modules including a circuit board having an connection terminal on a side thereof while having an LED and a circumferential unit enclosing a circumference of the circuit board and having an auxiliary connection terminal electrically connected to the connection terminal are coupled in a matrix structure; an impact absorbing groove depressed and extended along a boundary portion between the circumferential unit and the circuit board; a moisture absorbing filter which is inserted into the impact absorbing groove and includes a moisture absorbing body of a moisture absorbing material capable of absorbing water; and a controller which is mounted on one side of the circumferential unit to supply power to the circuit board, and includes a switching module to convert commercial external power by an SMPS method to supply the converted power to the circuit board, and a switch control unit (SCU) to control an output of the switching module in accordance with a load changed while the circuit board is coupled.

Description

(SMPS / SCU Assembled Type LED Display) which integrates SMPS and SCU,

The present invention relates to an LED display device in which an SMPS and an SCU are integrated, and more particularly, to a display device that can be used in water, wherein a plurality of display panels are mounted and used The present invention relates to an LED display device in which an SMPS and an SCU are integrated.

With the development of display technology, wiring technology and material technology, the use of displays in the water, which had previously been possible only with imagination, is becoming more and more realized. In the past, it was very difficult to install a display in the water, so it was mostly used for artistic purposes except for special purposes. However, nowadays, it is used for advertising, safety warning, Is gradually increasing.

Particularly, if water is taken from a designated area such as a swimming pool or a water park and the user enjoys leisure time in the water, the utilization and value of such an underwater display device can not help but increase. Because most of the users spend their time swimming in the water, it is more likely that it is easier for users to display advertisement or guidance on the water than to display the advertisement or the guide outdoors.

Further, even if it is not necessarily for this purpose, such a display device can be applied to a place where water is exposed (for example, a car wash or a bathroom), and furthermore, such a display device can be provided in a water tank such as an aquarium so that its utilization is expected to be unlimited .

However, the fact that the underwater display device can not be utilized properly with these advantages is not only that there are some problems (leakage, transforming, transmission) in utilizing the power in the water, but also waterproofing structure is applied for sure waterproofing The cost is too high, and if waterproofing is applied properly, life expectancy is very short, and the display can not be used for a long time.

As a prior art of a display device for solving such a problem, Korean Unexamined Patent Publication No. 10-2011-0034579, 'Underwater type high illumination LED light source' is disclosed. The present invention relates to a submerged high illumination light source assembly comprising a module comprising: a heat sink having a front and a back; A printed circuit board connected to the front surface of the heat sink and having electrical contacts having a size and shape coupled with a plurality of high intensity LED lamps; A reflector having a size and shape for installing the LED lamp; And a window coupled to the reflector to be watertight, the LED lamp being coupled to the printed circuit board through the electrical contact; And can be operated in air as well as in air. This is because the display substrate is equipped with a window structure for waterproofing so that it can be used in water, but as shown in the drawing, the display substrate can not be extended indefinitely.

As another prior art, Korean Utility Model Publication No. 20-2012-0005779 discloses a hybrid light controller combining a light emitting diode light controller and a switching mode power supply. Hybrid lighting controller that combines LED lighting controller and SMPS. It can operate LED lighting controller with AC220V input. It can be installed conveniently by purchasing one hybrid lighting controller without need to purchase LED lighting controller and SMPS separately. Technology. That is, the input of the conventional LED lighting controller is DC12V, but the input of the hybrid lighting controller is AC220V. However, it includes only the transformer configuration, It is a technology that can not be applied immediately because it is not available.

Therefore, in order to solve such a problem, a display device that can be used in the water is provided, and an LED display device including an SMPS and an SCU integrated with a plurality of display panels, The need to develop the

SUMMARY OF THE INVENTION The present invention is conceived to overcome the problems of the prior art, and it is an object of the present invention to provide a display device which can be used in water, and which is capable of mounting a plurality of display panels, And an LED display device incorporating the LED display device.

Another object of the present invention is to provide a configuration in which a substrate on which an LED is mounted can be utilized in a matrix structure.

Still another object of the present invention is to provide a configuration in which the watertight structure is further applied to such a connection configuration.

It is a further object of the present invention to provide a configuration for discharging internal moisture that may occur due to application of a connection configuration.

In order to achieve the above object, an LED display device incorporating an SMPS and a SCU according to the present invention comprises a substrate having a connection terminal on a side in a state of having an LED, a substrate surrounding the substrate, A display assembly including a display module including a peripheral portion having an auxiliary connection terminal electrically connected thereto in a matrix structure; A buffer groove extending along the boundary between the peripheral portion and the substrate; A hygroscopic filter inserted into the buffer groove and including a hygroscopic material capable of absorbing moisture; A switching module mounted on one side of the circumferential portion to supply power to the substrate, the switching module converting a commercial external power source into an SMPS (Switch Mode Power Supply) method and supplying the power to the substrate; And a controller having a switch control unit (SCU) for controlling the output of the switching module.

In addition, the hygroscopic filter may include a transparent coating layer surrounding the moisture absorber and having a plurality of fine holes formed therein, and a barrier layer disposed between the coating layer and the moisture absorber, And the humidity indicator includes a variable humidity indicator.

Further, the peripheral portion may include a moisture discharging hole penetrating the outer circumferential surface toward the outer side, which is located on the opposite side from the side of the side contacting the buffer groove, and a frusto-conical shaped bottom surface, And the side surface of the block body is in close contact with the inner circumferential surface of the moisture discharge hole.

The circumferential portion may include a plurality of grip through-holes penetrating at regular intervals along the longitudinal direction, and a plurality of peripheries connected to each other through the grip through-holes sequentially so as to connect matrix structures of the display module. And a lining part for fixing the lining part.

The LED display device incorporating the SMPS and the SCU according to the present invention,

1) A display device that can be used in water, which provides a configuration capable of integrating and separating SMPS and SCU for supplying power to the display device,

2) a structure in which LED-attached substrates are connected in a matrix structure,

3) providing a structure capable of protecting the electrical connection of the substrate by forming a watertight structure,

4) Further, it is possible to further provide a configuration capable of discharging internal moisture that may occur despite such a configuration.

1 is a perspective view showing a basic configuration of an LED display device in which an SMPS and an SCU of the present invention are integrated.
2 is an exploded perspective view showing a basic configuration of an LED display device incorporating an SMPS and a SCU of the present invention.
3 is an exemplary view showing an embodiment of an LED display device incorporating an SMPS and a SCU of the present invention.
4 is a conceptual diagram showing an embodiment in which the hygroscopic filter of the present invention is applied.
5 is a conceptual view showing an embodiment in which the lining portion of the present invention is applied.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings are not drawn to scale and wherein like reference numerals in the various drawings refer to like elements.

FIG. 1 is a perspective view showing a basic structure of an LED display device incorporating an SMPS and a SCU according to the present invention, FIG. 2 is an exploded perspective view showing a basic structure of an LED display device incorporating an SMPS and a SCU, 3 is an exemplary view showing an embodiment of an LED display device incorporating the SMPS and SCU of the present invention.

Referring to the drawings, an LED display device incorporating an SMPS and a SCU according to the present invention includes a substrate 10 having a connection terminal 113 on a side thereof with LEDs, A display assembly 100 in which a display module 12 composed of a peripheral portion 11 having an auxiliary connection terminal 116 electrically connected to the substrate 10 is coupled in a matrix structure, (Not shown) surrounding one side or periphery of the substrate 11 to supply electric power to the substrate 10, and converts the commercial external power into a SMPS (Switch Mode Power Supply) A controller 300 for controlling the output of the switching module 310 in accordance with a load that varies while the substrate 10 is coupled to the substrate 10; .

First, the substrate 10 has a basic structure of a well-known LED lighting. Basically, a PCB (Printed Circuit Board), an LED and a reflector mounted on the top surface of the PCB, a rear surface of a reflector, It is based on the configuration of the sink. Although the substrate 10 may be formed in any shape, the display assembly 100 is formed by combining a plurality of the substrates 10 in a matrix structure due to the characteristics of the invention. Therefore, the substrate 10 is most preferably formed in a rectangular shape, It is needless to say that a hexagonal shape or an octagonal shape may have various shapes according to need. In addition, when a matrix structure is provided, a connection terminal 113 must be extended to the side so as to maintain electrical connection with a neighboring substrate 10, and electrical connection with a neighboring substrate 10 is possible through such a terminal (Preferably connected via an auxiliary connection terminal 116 formed in the peripheral portion 11) through the peripheral portion 11 in order to connect the peripheral portion 11 and the peripheral portion 11 to each other.

The peripheral portion 11 protects the substrate 10 while being surrounded by the substrate 10 and forms a connection between the substrate 10 and the substrate 10. The peripheral portion 11 has the same height as the substrate 10 Or a height higher than the height of the substrate (10). At this time, if the peripheral portion 11 is formed higher than the height of the substrate 10, it may be easier to apply other structures located in the peripheral portion 11, And may be provided by adjusting the height or width thereof in consideration of the constitution to be provided. Although not shown in detail in the drawing, the peripheral portion 11 may have a separate connection structure, and the connection between the peripheral portions 11 and the peripheral portion 11 and the coupling between the peripheral portion 11 and the substrate 10, The controller 11 and the controller 300 can be coupled to each other. However, since various known methods are applicable to the coupling structure, a detailed description thereof will be omitted.

For example, the peripheral portion 11 may have various shapes such as a plate or a band, a structure having a lump, and the like. The surface of the substrate 10 preferably has a waterproof housing 101 may be provided. The thickness of the waterproof housing 101 is adjusted by adjusting the thickness of the peripheral portion 11 or by extending the area of the waterproof housing 101 to a thickness and width sufficient to protect the substrate 10 through the peripheral portion 11 And other embodiments utilizing the same will be described in more detail below.

The peripheral portion 11 forms an electrical connection with the connection terminal 113 formed on the side of the substrate 10 as described above and includes the configuration of the auxiliary connection terminal 116. [ The auxiliary connection terminal 116 preferably means a contact portion of conductive material formed through the side portion of the peripheral portion 11 or through the side portion.

Referring to FIG. 2, a part of the auxiliary connection terminal 116 and the connection terminal 113 are separated from each other in order to identify the auxiliary connection terminal 116 and the connection terminal 113. In particular, It can be confirmed that a plurality of terminals 116 are provided and that the connection terminal 113 is also provided on the side of the substrate 10. [

The connection terminal 113 of each substrate 10 is electrically connected to the auxiliary connection terminal 116 of the peripheral portion 11 by forming the matrix structure in such a state that the peripheral portion 11 is covered with the substrate 10, . Further, since the electrical connection can be formed between the peripheral portion 11 and the auxiliary connection terminal 116 through the auxiliary connection terminal 116, it is needless to say that all the substrates may be electrically connected to each other. At this time, the connection terminal 113 and the auxiliary connection terminal 116 may be provided with a current-carrying contact portion so as to contact each other to form an electrical connection. In particular, in the case of the auxiliary connection terminal 116, It is needless to say that the present invention is also applicable to a form in which a separate conductor 114 is provided inside.

The connection terminal 113 and the auxiliary connection terminal 116 are formed in the same manner as the substrate 10 in consideration of the mounting position of the substrate 10 and also for the convenience of the configuration of the moisture discharge hole 240 and the lining part 250, But it is needless to say that the positions of these structures may be provided to some extent in a fluid manner so that the forming positions thereof may be varied as necessary.

In the case of the controller 300, it is basically mounted on one side of the substrate 10 to supply power to the substrate 10. The controller 300 can be mounted on any side of the substrate 10 (preferably mounted on the side of the periphery 11) when the substrate 10 is coupled in a matrix structure, It may be mounted on the rear surface or the front surface of the substrate 10 according to need, and may be mounted at a predetermined distance from the substrate 10, although it is not a recommended method if electrical connectivity is ensured.

The controller 300 has functions of an SMPS (Switch Mode Power Supply) and an SCU (Switch Control Unit). First, the switching module 310 functions as an SMPS. Switching system) to supply a power source having a desired characteristic to the substrate 10. In this case, the switching module 310 may be configured to manage the entire load in one SMPS configuration, but in some cases, the LEDs located on the substrate 10 may be grouped by a certain number or position, A driver IC for controlling power supply to the LEDs may be included in each group, but it is needless to say that SMPS may be included in each driver IC. Further, when such a configuration is provided, the configuration of the switching module 310 can be considered in a manner that the SMPS is modularly attached to each driver IC, or the SMPS is built in the driver IC when the driver IC is manufactured.

Further, the switch control unit 320 functions as an SCU, and can control the switching operation of the switching module 310 (switching speed, etc.) so that a desired output can be derived.

As described above, the substrate 10 may further include a waterproof housing 101 that forms a watertight structure covering the upper surface, the side surface, the rear surface, and the like. The waterproof housing 101 may be simply a method of coating the surface of the substrate 10, a method of covering the surface of the substrate 10 using pressure-resistant glass or a light transmitting synthetic resin, or the like. The waterproof housing 101 is configured to have a shape like a frame so that moisture can not easily reach the substrate 10 surrounded by the waterproof housing 101. Here, when the side surface is surrounded, another groove or hollow (not shown) may be further provided so that the electrical connection between the substrate 10 and other members can be maintained. Therefore, the display device can be installed in the water or in the vicinity of water such as a swimming pool as shown in FIG. The thickness of the waterproof housing 101 may be increased or may be spaced apart from the surface of the substrate 10 by a predetermined distance. In the case of the connecting method according to various applications, the known electrical connecting method and the waterproofing structure Of course.

Further, the controller 300 can be divided into a first controller (not shown) and a second controller (not shown). Here, the first controller means the controller 300 including the switching module 310, and the second controller means the controller 300 including the switch control unit 320. The two controllers 300 may be detachably coupled so that the second controller can be separated from the first controller in a special case such as the case where there is not enough space at the position where the display device is to be installed.

Returning to the description of the display assembly 100 for a while, a buffering groove 111 may be provided at a boundary portion between the peripheral portion 11 and the substrate 10 so as to extend along the boundary portion to form a buffer space. The buffer groove 111 may include a hygroscopic filter 220 having a hygroscopic body 221 of a hygroscopic material capable of absorbing moisture so that water is supplied to the substrate 10 through the hygroscopic body 221, The moisture absorption filter 220 may be provided with a waterproofing treatment or a separate cover so as to prevent water from entering the waterproofing processing chamber 220 It is preferable to configure it so as to be able to absorb moisture and moisture falling to the side of the substrate 10.)

Of course, it is most important that water does not flow toward the substrate 10, but even if any water-tightness treatment is performed, there may occur a gap in which water can flow due to various reasons. Therefore, even if the waterproofing treatment is performed, it is basically necessary to have a configuration capable of absorbing a certain amount of water or moisture temporarily. Further, when the water or moisture is excessively generated, It is necessary to apply a configuration to the system.

The buffer groove 226 is formed in the peripheral portion 11 in order to achieve the above object and is embedded along the boundary between the peripheral portion 11 and the substrate 10 to form the buffer groove 226 At this time, the inside of the buffer groove may be referred to as a buffer space. Not only is the peripheral portion 11 able to withstand a certain level of water pressure applied to the substrate 10 through the buffer space, A hygroscopic filter 220 provided with a hygroscopic material 221 capable of absorbing moisture (a material having high hygroscopicity such as cotton or cotton fabric, paper, synthetic resin, and silica gel, for example, And may be provided in a shape such as a lump having a certain volume) to absorb the moisture generated in accordance with a difference in atmospheric pressure or a change in temperature that may occur in the water. Therefore, a gap is formed due to the occurrence of an arbitrary problem, and water penetrating into the gap can be absorbed to a certain level, so that the failure of the substrate 10 due to moisture permeation can be prevented to a certain level. It can be expanded and contracted to some extent, and thus it can be utilized for additional buffering action.

Returning to FIG. 1, the display assembly 100 may be further configured to enhance its durability and further comprise a separate frame (not shown) enclosing the entire periphery of the display assembly 100, In the case of the frame structure, another through-hole (not shown) may be formed in the inside or other water-proof coating may be formed so that other members can maintain electrical connection, and further, a separate wire or connection terminal is provided in a certain area It is of course possible to form a configuration capable of electrically connecting the controller 300 directly to the substrate 10, the peripheral portion 11, and the like.

4 is a conceptual diagram showing an embodiment to which the hygroscopic filter of the present invention is applied.

First, the structure of the hygroscopic filter 220 is based on a hygroscopic material 221 of hygroscopic material capable of absorbing moisture, as described above. The shape of the hygroscopic material 221 is composed of a plurality of grains Or a lump shape having a constant volume or the like. However, it may further include a structure of a transparent coating layer 223 surrounding the moisture absorber 221 so as to prevent the moisture absorber 221 from flowing out to the outside, in which a plurality of fine holes are formed. Further, The color of the moisture absorbed by the moisture absorber 221 is changed between the coloring layer 223 and the moisture absorber 221 by changing the color of the moisture absorbed by the moisture absorber 221 And a moisture indicator 222 which changes color by reacting with the moisture indicator 222.

The moisture indicator 222 is made of a material similar to or similar to a moisture absorbing agent included in a hygroscopic agent, a silica gel, or the like to guide the degree of hygroscopicity through a color change. The moisture indicator 222 exhibits a specific first color in an initial state, And finally changes to a second color. One example is cobalt chloride, which is initially characterized by a blue color and gradually reddish color as it absorbs water. In addition, the moisture indicator 220 and the buffering groove 111 should be formed of a transparent material capable of color guidance so that the moisture indicator 222 can be observed from the outside.

In this case, the moisture absorber 221 of the hygroscopic filter 220 may further include a through groove (not shown) penetrating through the moisture absorber 221 at a predetermined interval. The through-hole may be formed of a columnar fusing pillar Not shown) may be further included. The pushing pillars are formed of a synthetic resin having physical properties similar to those of rubber or rubber, and are formed of a material which is less elastic or less denatured than the hygroscopic body 221. That is, a general external force is applied by the pressure change due to waves, currents, etc. When the hygroscopic body 221 equipped with the pushing pillars is pressed, the pushing pillars maintain their original shape, (220) is pushed and is naturally received by the pushing pillars.

When the moisture absorber 221 is pressed, the moisture absorber 221 is pressed by the pushing pillars, which means deformation of the moisture absorber 221. Therefore, even if the pushing pillars are fixed, a force similar to that of squeezing the moisture absorber 221 acts, and the moisture contained in the moisture absorber 221 is squeezed outward. This can provide a structure capable of pushing the moisture absorbed by the moisture absorber 221 to the outside and discharging it.

Even if such a structure is not provided, a configuration in which the moisture absorber 221 is discharged to the outside from the buffer groove 226 is further applicable.

First, the moisture absorber 221 has a minimum amount of the moisture absorber, which is the maximum amount of moisture. If moisture is left out of such a limit amount, moisture exceeding the limit amount flows out from the moisture absorber 221. Such moisture must be quickly removed from the buffer groove 111 to the outside of the LED display device to minimize damage to the substrate by moisture. At this time, the best method for discharging moisture is to discharge moisture to the outside of the display assembly 100, and the first flow of moisture is influenced by cracks or cracks generated for any reason mentioned above , And it can be used as a structure capable of discharging water by reusing it.

This discharge structure preferably penetrates the outer peripheral surface of the peripheral portion 11 from one side of the side surface contacting with the cushioning groove 111 in the peripheral portion 11 so as to penetrate the peripheral edge portion 11 in a concentrated manner, The moisture discharge hole 240 is formed in the shape of a truncated cone having the same shape as that of a part of the moisture discharge hole 240 and is in close contact with the inner side of the moisture discharge hole 240, And a block body 241 which is in close contact with one side of the block body 241.

The shape of the moisture discharge hole 240 is a trumpet shape in which the entrance direction is narrow in the inner direction toward the buffering groove 111 and the direction toward the opposite side is formed largely in the form of a trumpet, 240, it is likely that air or water flows into the moisture discharge space from the outside, but the situation changes when the block body 241 is additionally attached thereto. That is, the block body 241 is mounted inside the moisture discharge space of the moisture discharge hole 240, so that the lower surface having a smaller area in the truncated cone shape is directed toward the buffer groove 111, 11), the side surface is formed so as to be in contact with the inner circumferential surface of the cushioning groove 111, so that it is impossible to flow in from the outside to the inside without passing through the gap (of course, It is always necessary to consider that the moisture can be introduced into the gap since it is possible to bring the block body 241 into close contact with the hole 240. However, even if a slight pressure is applied, It is a matter of course that it has a configuration capable of discharging moisture.

In this case, since the moisture is sufficiently absorbed by the moisture absorber 221, preferably the color change of the moisture indicator 222 can be observed from the outside, the manager confirms this color change and proceeds to repair the corresponding site Of course.

However, as shown in the drawing, the two moisture discharging holes 240 may be located in opposing shapes. In this case, basically, moisture does not flow into the moisture discharge hole 240, so that the block body 241 must not be driven. However, for the sake of necessity, the moisture discharge hole 240 may have a gap or a gap The block body 241 may be detached from the moisture discharge hole 240 as the water is heated. In this case, since the two moisture discharge holes 240 are opposed to each other and water is discharged, the two moisture absorption bodies 221 can be utilized. Therefore, moisture can be supplied through the moisture discharge holes 240 It is of course possible to maintain the balance of the amount of water absorption while being received.

5 is a conceptual diagram showing an embodiment in which the lining portion of the present invention is applied.

Finally, the configuration of the lining portion 250 that can fix the matrix structure combination of each display module 12 can be further applied. The lining part 250 is, for example, a soft cord, and may have a rectangular or circular cross-section. However, the lining part 250 may be of various shapes as required. In addition, the lining unit 250 can be detachably attached. In this case, the lining unit 250 is mounted and utilized only when the lining unit 250 is required. If not necessary, the lining unit 250 is removed Of course.

At this time, a plurality of grip through holes 112 penetrating through the lining part 250 can be further formed in the peripheral part 11 at regular intervals corresponding to the lining part 250 have. Therefore, it is preferable that the grip hole 112 is formed in a shape corresponding to the lining part 250. Through this configuration, the lining part 250 is passed through the grip hole 112 and is bundled by a sewing method It is possible to fix the matrix structure coupling of each display module 12 by a method in which the two grip through holes 112 are alternately passed through and bound to each other or passed through one grip through hole 112, Of course it is. The grip hole 112 is preferably formed to avoid the auxiliary connection terminal 116 of the peripheral portion 11 but the auxiliary connection terminal 116 may be formed so as not to affect the internal configuration of the auxiliary connection terminal 116, Or may be formed in a shape passing through or passing through.

Such a fixed configuration forms a physical fixing rather than a simple insertion or a coupling method. Since the coupling method is very complicated, there is little possibility of loosening the coupling, It is easy to repair, repair, replace, and the like.

As described above, the configuration and operation of the LED display device in which the SMPS and the SCU are integrated according to the present invention are described in the above description and drawings, but the present invention is not limited to the above description and drawings. And it is to be understood that various changes and modifications may be made without departing from the spirit of the invention.

10: substrate 11: peripheral portion
12: display module 100: display assembly
101: Waterproof housing 111: Buffer groove
112: grip hole 113: connection terminal
114: lead 116: auxiliary connection terminal
220: hygroscopic filter 221: hygroscopic element
222: Moisture indicator 223: Coating layer
231: Through hole 240: Moisture venting hole
241: block body 242:
250: lining part 300: controller
310: Switching module 320: Switch control unit
330: discharge control module 331: water sensing unit
332:

Claims (4)

As an LED display device that integrates SMPS and SCU,
A display module including a substrate having a connection terminal on a side thereof in a state of having an LED and a peripheral portion surrounding the periphery of the substrate and having an auxiliary connection terminal electrically connected to the connection terminal, assembly;
A buffer groove extending along the boundary between the peripheral portion and the substrate;
A hygroscopic filter inserted into the buffer groove and including a hygroscopic material capable of absorbing moisture;
And a power supply unit for supplying power to the substrate mounted on one side of the peripheral portion,
A switch module for converting a commercial external power source into a switch mode power supply (SMPS) type and supplying the converted external power source to the substrate; a switch control unit (SCU) for controlling an output of the switching module according to a load, Unit,
The moisture-
A transparent coating layer surrounding the moisture absorber and having a plurality of fine holes formed therein,
And a moisture indicator positioned between the coating layer and the moisture absorber and having a color changing depending on the humidity of the moisture absorbed by the moisture absorber. delete The method according to claim 1,
The peripheral portion
A moisture discharge hole penetrating the outer surface of the side opposite to the side opposite to the buffer groove,
And a block body of an elastic material formed in a truncated cone shape and having a side surface closely contacting the inner circumferential surface of the moisture discharge hole with a bottom surface having a large area facing toward the outer surface, Device. The method according to claim 1,
The peripheral portion
A plurality of grip-through holes penetrating at regular intervals along the longitudinal direction,
And a lining part formed of a soft material and fixing the matrix structure of the display module by sequentially passing the grip through holes and connecting a plurality of the peripheries to each other, thereby integrating the SMPS and the SCU.

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