JP2017005084A - LED display panel and LED information display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED information display device achieving both compactness at the time of folding and high display quality.SOLUTION: There is provided an LED display panel 100 including LED mounting modules 10 and a storage sheet 2 which can store the plurality of LED modules 10 in a state of being continuously connected with each other in a horizontal direction and can be folded in a connection portion between the LED mounting modules 10, where the storage sheet 2 is formed by layering a display surface side sheet 21 and a back face side sheet 22, in the storage sheet 2 the display surface side sheet 21 and the back face side sheet 22 are brought into close contact with each other in a region including the connection portion excluding a region necessary for storing the LED mounting modules 10 to thereby form a plurality of LED storage sections, and both the display surface side sheet 21 and the back face side sheet 22 are resin sheets having a thickness of 0.3 mm or more and 0.8 m or less.SELECTED DRAWING: Figure 6B

Description

  The present invention relates to an LED display panel and an LED information display device. Specifically, the present invention relates to an information display device equipped with an LED element, which can be easily carried by folding in a compact manner, and an LED information display device using the LED display panel.

  In recent years, various LED information display devices such as a dot matrix display device that displays information such as desired characters and symbols by selectively emitting LED elements mounted in a matrix form are rapidly spreading (patents). Reference 1). Such LED information display devices are also spreading as traffic information information display devices on highways, for example.

  Actually, such LED information display devices are installed in various places on the highway, and various traffic information is displayed and transmitted to passing vehicles as needed. However, in the case of sudden and serious changes in road conditions such as traffic accidents, etc., depending on only the display device that is permanently installed in such a specific position, it may not always be possible to specify an unspecified location and time. It is not possible to display necessary information at a necessary place in response to an accident that occurs.

  In order to deal with this problem, it is light and foldable, so it can be easily transported to the required location (for example, an accident site on a highway) when necessary, and the installation and withdrawal at the installation site can be shortened. A portable LED information display device that can be performed in time has been proposed (see Patent Document 2).

JP 2008-218674 A JP 2011-40570 A

  In the LED information display device described in Patent Document 1, a plurality of LED mounting modules are accommodated in a cover sheet (accommodating sheet) made of a resin sheet in such a manner that they are connected in one direction. And the part used as the connection part between each said mounting LED module is a foldable part among this accommodation sheet | seats, The structure which can be folded up compactly by bend | folding this part at the time of conveyance Have.

  However, in this foldable portion, the semicircular bent portion formed during folding as shown in FIG. 7B is due to the restriction of the curvature of the resin, so that the outer diameter of the bent portion is the thickness of the LED display panel. In such a foldable type LED information display device, there is a problem in that the folds up so that it cannot fit within the width of the ridge, and there is a case where the compact fold is hindered.

  In the folding type LED information display device, the width of the connecting portion must be sufficiently large in proportion to the radius of curvature of the bent portion formed in the foldable portion. However, this bendable part is a connecting part between the LED mounting modules, and if this width is unnecessarily increased, the pitch between the LED elements mounted with the connecting part interposed therebetween is unnecessarily enlarged. (See FIG. 7A).

  In the above case, the pitch of all the LED elements is enlarged to match the pitch in this connecting portion, or only the substantial pitch of the LED elements in this region is different from the other parts. I have to accept it. Such an uneven arrangement of the LED elements in the LED information display device may lead to a reduction in the display quality of the LED information display device, particularly the definition of display characters and graphics. There has been a demand for an LED information display device that can avoid this problem and achieve both compactness at the time of folding and high display quality.

  An object of this invention is to provide the LED information display apparatus which made the compactness at the time of folding and high display quality compatible.

  As a result of intensive research, the present inventors can solve the above-mentioned problem by optimizing the thickness of the material resin sheet of the housing sheet for housing the LED mounting module in the LED display panel to a specific range. As a result, the present invention has been completed. Specifically, the present invention provides the following.

  (1) An LED mounting module in which an LED element is mounted on an LED element substrate, a display surface side sheet, and a back side sheet are laminated, and between the display surface side sheet and the back side sheet, A storage sheet that can be accommodated in a state in which the plurality of LED mounting modules are connected, and is foldable at a connecting portion between the LED mounting modules, and the storage sheet includes: Both the display surface side sheet and the back surface sheet are LED display panels having a thickness of 0.3 mm or more and 0.8 m or less.

  According to the invention of (1), in the LED display panel in which a plurality of LED mounting modules are connected to the housing sheet, the thickness of the resin sheet forming the housing sheet is optimized to a specific range, thereby protecting the LED element. Therefore, the radius of curvature of the bendable portion of the storage sheet can be made sufficiently small while ensuring the weather resistance necessary for the purpose. In addition, the width of the connecting portion including the bendable portion can be made sufficiently small, and the pitch of the LED elements mounted with the connecting portion interposed therebetween can be optimized to a desired width. As a result, both compactness at the time of folding and display definition can be achieved.

  (2) The LED display panel according to (1), wherein each of the display surface side sheet and the back surface sheet is a resin sheet having a thickness of 0.4 mm to 0.6 mm.

  According to the invention of (2), the above effect of the invention of (1) can be expressed at a higher level. In particular, when the LED information display device requires relatively high definition, the pitch of the LED elements can be set small to meet such a requirement. The cost of the material resin can be reduced to contribute to the improvement of economy.

  (3) The LED display panel according to (1), wherein each of the display surface side sheet and the back surface sheet is a resin sheet having a thickness of 0.7 mm to 0.8 mm.

  According to the invention of (3), the above effect of the invention of (1) can be expressed at a higher level. In particular, when relatively higher weather resistance is required for the LED information display device, it is possible to provide sufficient weather resistance to the storage sheet to meet such a request.

  (4) A mounting pitch of the LED elements on the LED element substrate is 10 mm or more and 15 m or less, and a mounting pitch of the LED elements in a portion straddling the connecting portion between the LED mounting modules, and each of the LEDs The LED display panel according to any one of (1) to (3), wherein a difference from a mounting pitch of the LED elements on the element substrate is 1.5 mm or less.

  According to the invention of (4), in the LED display panel according to any one of (1) to (3), the LED element pitch in the entire display unit can be unified to a desired small pitch. Thereby, the definition of display can be further improved while maintaining compactness at the time of folding.

  (5) The display surface side sheet and the back surface sheet are resin sheets comprising one resin selected from vinyl chloride, a PVC coating sheet, a polyethylene sheet, and nylon (1) to (4) The LED display panel according to any one of the above.

  According to the invention of (5), the above effects in the LED display panel according to any one of (1) to (4) can be achieved with extremely high accuracy by using, for example, vinyl chloride which is a general-purpose resin and is easily available. Can be expressed.

  (6) The LED display panel according to any one of (1) to (5), wherein the LED element substrate is a flexible substrate having a resin film as a support substrate.

  According to the invention of (6), in the LED display panel according to any one of (1) to (5), the LED element substrate is a flexible substrate. Thereby, since the LED mounting module can be made light and soft, it is possible to greatly reduce the risk of scratching or damaging the accommodation sheet due to contact with the LED mounting module.

  (7) The storage sheet includes an internal control unit that controls lighting of the LED element, and the internal control unit is configured by a flexible wiring disposed in the storage sheet. The LED display panel according to any one of (1) to (5), which is electrically connected to the LED mounting module.

  According to the invention of (7), the LED display panel according to any one of (1) to (6) can be folded in a compact manner with the control unit connected to the LED mounting module. It is. Therefore, installation and withdrawal at the transport destination of the LED information display device can be performed more quickly.

  (8) An LED information display device comprising the LED display panel according to any one of (1) to (7) as an information display unit.

  (8) According to the invention of (8), it is possible to provide an LED information display device that achieves both compactness at the time of folding and display quality.

  ADVANTAGE OF THE INVENTION According to this invention, the LED information display apparatus which made compatible the ease of conveyance by the compactness at the time of folding, and the display quality, especially the high definition of a display can be provided.

It is a perspective view which shows the whole structure of the LED information display apparatus of this invention. It is a partial perspective top view of the LED display panel of this invention. It is the elements on larger scale of the LED display panel of this invention. It is sectional drawing which shows typically the cross section in the AA of the LED display panel of FIG. It is a perspective view with which it uses for description of how to fold the LED display panel of this invention. It is a perspective view which shows the state by which the LED display panel of this invention was folded. It is sectional drawing which shows the layer structure of the connection part of the LED display panel of this invention. It is sectional drawing which shows the aspect of the connection part at the time of folding of the LED display panel of this invention. It is sectional drawing which shows the layer structure of the connection part of the conventional LED display panel. It is sectional drawing which shows the aspect of the connection part at the time of folding of the conventional LED display panel.

  Hereinafter, embodiments of the LED display panel of the present invention and LED information display devices using the LED display panel will be sequentially described. The present invention is not limited to the following embodiments, and can be implemented with appropriate modifications within the scope of the object of the present invention.

<LED display panel>
[overall structure]
As shown in FIG. 1, the LED display panel 100 of the present invention is an information display device in which a plurality of LED mounting modules 10 are connected in the horizontal direction. The LED mounting module 10 is a member in which a plurality of LED elements 3 are mounted in a matrix on the LED element substrate 1 and is a display member capable of displaying character information and the like. As shown in FIG. 4, the plurality of LED mounting modules 10 are stably housed between the display surface side sheet 21 and the back surface side sheet 22 constituting the housing sheet 2. Hereinafter, an LED display panel 100 in which a plurality of LED mounting modules 10 are linearly connected in one direction will be described as a typical embodiment of the present invention. Those arranged in both the X and Y directions and connected in a matrix are also within the scope of the present invention as long as they satisfy other essential constituent requirements.

  In the LED display panel 100, as shown in FIG. 2, each LED mounting module 10 is accommodated in the accommodation sheet 2 individually in a straight line at a predetermined interval. Each LED mounting module 10 is electrically connected to an internal control unit including a relay base 5 and a driver 6 by a flexible wiring 4 embedded in the accommodation sheet 2.

  The LED display panel 100 further constitutes an LED information display device 200 by being connected to necessary equipment in addition to the external operation base 7 as necessary. The LED information display device 200 is mainly used outdoors by allowing the LED display panel 100 to stand on its own by various auxiliary devices (not shown) as needed, or by installing it on the wall surface of the installation site. It is used as an information display device installed non-constantly.

  As shown in FIGS. 5A and 5B, the LED display panel 100 has a structure that can be folded in a stacked state for each unit portion including the individual LED mounting modules 10 during transportation or storage. The folding method is not limited to a specific folding method except that it is the above-described mode. However, when the LED display panel 100 connects three or more LED mounting modules, it can be folded into ninety-nine folds. It is preferable to have a structure that can be formed. Ninety-nine folds refers to a structure in which a plurality of face pieces are connected to each other, and adjacent face faces are folded so that the front surface-front surface and the back surface-back surface overlap in order. Details of the folding structure and the effects will be described later.

[LED mounting module]
As shown in FIGS. 3 to 4, the LED mounting module 10 constituting the LED display panel 100 is formed on an LED element substrate 1 formed by forming a metal wiring portion (not shown) on a support substrate 11 made of a resin sheet or the like. The light emitting member is formed by mounting the LED elements 3 in a matrix.

  The LED element substrate 1 is a member for internal wiring in which a metal wiring portion (not shown) for mounting the LED element 3 on the support substrate 11 is formed. The metal wiring part is formed at least on the information display surface side of the support substrate 11. When a so-called dot matrix display device is configured, a multilayer metal wiring part as described in Patent Document 1 is generally configured. Is done.

  The LED element substrate 1 covers a portion on the surface of the support substrate 11 and the surface of the metal wiring portion except for the LED mounting region (hereinafter referred to as “LED non-mounting region”). It is preferable that a spacer 12 made of a material or the like is formed so as to exhibit an effect of protecting the LED element from an external impact. In particular, when the support substrate 11 is a flexible substrate made of a resin film or the like, the arrangement of the spacers is essential.

  For example, the spacer 12 may be formed only in a portion surrounding the outer periphery of the matrix region where the LED elements 3 are mounted in a matrix. Many conventional products have such a structure. However, the spacer 12 is more preferably formed in the entire LED non-mounting region as shown in FIG. 6A. For example, a configuration in which a resin sheet made of polycarbonate, acrylic, or the like, in which a through hole is formed in a portion corresponding to the LED mounting region, is laminated in a manner covering the entire matrix region is given as a specific example of a preferable configuration. Can do. By adopting such a configuration of the spacer 12, the LED display panel according to the present invention in which the housing sheet is configured by a resin sheet having a relatively high flexibility and a smaller thickness than the conventional one can be used. The LED element 3 can be reliably protected from external impact or the like.

  In particular, when the LED display panel is a dot matrix display device, it is preferable that a black layer 13 for improving contrast is formed on the outermost surface of the LED non-mounting region in the LED mounting module 10. The black layer 13 may be one in which the surface of the spacer 12 is colored with a black pigment or the like, or is a resin base material containing the pigment, and corresponds to the LED element mounting region like the spacer. A structure in which a through hole is formed in a portion may be separately laminated on the upper surface of the spacer 12.

  The supporting substrate 11 constituting the LED element substrate 1 is preferably a flexible substrate made of a resin film or the like and having flexibility. By using the support substrate 11 as a flexible substrate, the LED display panel can be installed following the curved surface even when the installation location is a wall surface including a curved surface. In addition, by using the support substrate 11 as a flexible substrate, it is possible to greatly reduce the risk of scratching or breaking the storage sheet due to contact with the LED mounting module. However, the present invention is not limited thereto, and the support substrate 11 may be an LED element substrate having a certain rigidity such as a rigid substrate.

  Preferred examples of the resin material for the flexible substrate include polyimide (PI), polyethylene naphthalate (PEN), amorphous polyarylate, polysulfone, polyethersulfone, polyphenylene sulfide, polyetheretherketone, polyetherimide, and fluororesin. And liquid crystal polymers. Among these, polyethylene naphthalate (PEN) whose heat resistance and dimensional stability are improved by performing a heat resistance improvement treatment such as an annealing treatment can be particularly preferably used. In addition, polyethylene terephthalate (PET) whose flame retardancy is improved by addition of a flame retardant inorganic filler or the like can also be selected as a material resin for the resin base. As described above, the support substrate 11 may be made of a material having rigidity, such as wood, metal, or ceramic.

  The arrangement of the metal wiring portion formed on the support substrate 11 is not limited to a specific arrangement as long as the LED elements 3 can be mounted in a matrix at a desired pitch, and a conventionally known LED element substrate. Arbitrary arrangements including the same arrangement can be adopted. Examples of the metal used as the material of the metal wiring part include metal foils such as aluminum, gold, silver, and copper.

  The LED element 3 constituting the LED mounting module 10 by being mounted on the LED element substrate 1 is a light emitting element utilizing light emission at a PN junction where a P-type semiconductor and an N-type semiconductor are joined. There have been proposed a structure in which a P-type electrode and an N-type electrode are provided on the upper and lower surfaces of the element and a structure in which both the P-type and N-type electrodes are provided on one element surface. The LED element 3 can be preferably bonded to the metal wiring portion of the LED element substrate 1 by solder bonding. This solder bonding can be performed by a reflow method or a laser method.

  In the LED display panel 100, it is preferable that a back-side reinforcing plate 14 is further laminated on the back side of the support substrate in addition to the above members. As the back side reinforcing plate 14, for example, a sheet or panel made of polycarbonate, acrylic, aluminum, or the like can be preferably used.

  Moreover, you may further arrange | position the diffusion plate 15 in the any layer above the light emission surface of an LED element as needed in the LED display panel 100. FIG. The diffuser plate 15 has a function of uniformly diffusing emitted light from the LED element 3 serving as a light source and reducing variations in luminance. Any conventionally known various optical films can be used without particular limitation as long as they have optical characteristics that impart a diffusing action to incident light. For example, an optical film or the like in which a minute and random lens array is formed on the entire surface in order to exert a light diffusing function on a translucent resin film made of polycarbonate, acrylic resin or the like is a specific example of the diffusing plate 15. Can be mentioned.

[Containment sheet]
The storage sheet 2 can stably store a plurality of LED mounting modules 10 in a connected state, and protects the LED mounting modules 10 stored in the LED display panel 100 during use. It is. The accommodation sheet 2 uses two resin sheets as the display surface side sheet 21 and the back surface sheet 22 respectively, and is a space in which a plurality of LED mounting modules 10 can be stably accommodated between both sheets. The other portion is formed by sealing the LED mounting module 10 in a manner capable of stably holding the LED housing portion.

  The LED accommodating portion is an area excluding the area necessary for accommodating the LED mounting module 10 for the display surface side sheet 21 and the back surface side sheet 22, and is necessary for accommodating the LED mounting module 10. In the region including the connecting portion formed between the regions, the sealing portion 23 is formed in close contact with each other, thereby forming a bag-shaped hollow portion surrounded by the sealing portion 23. In addition, as above-mentioned, the connection part of the storage sheet 2 is the sealing part 23 in which the display surface side sheet | seat 21 and the back side sheet | seat 22 are closely_contact | adhered in the storage sheet 2, and the LED mounting module 10 is sealed. Among the portions, in particular, it is a sealing portion formed between the plurality of LED mounting modules 10 and is a portion that becomes a foldable portion when folded.

  As shown in FIG. 4, in the display surface side sheet 21, an area surrounding at least a matrix area where the LED elements 3 are mounted, that is, an area on the area where information is displayed by turning on the LED elements is the display surface side. Although it is good also as an opening area | region where the sheet | seat 21 does not exist, it is preferable to form the said area | region part of the display surface side sheet | seat 21 with the transparent film 211 with high light transmittance. Or in the part on this information display area, it may replace with the display surface side sheet | seat 21, and may arrange | position a separate transparent member alternatively.

  As a resin sheet which comprises the accommodation sheet | seat 2, the well-known resin sheet which consists of vinyl (soft plastic), an acryl, styrenes, etc. can be used suitably. However, in the LED display panel 100 of the present invention, it is particularly preferable to use vinyl chloride from the viewpoint that the curvature radius of the bent portion at the time of folding can be easily made sufficiently small. In addition, in order to provide the other desired physical property as needed, the accommodation sheet 2 may be coated or colored.

  Here, in the conventional foldable LED display panel, in order to ensure weather resistance and protection performance, generally, the resin sheet constituting the outer layer sheet that accommodates the LED has a thickness of 1.0 mm. More than about vinyl chloride is generally used. On the other hand, the present invention has a thickness of 0.3 mm or more as the above-described resin sheet constituting the containing sheet 2 while making a thin film of vinyl chloride while paying attention to the lower limit capable of ensuring the minimum weather resistance and protection performance. It was decided to use one that was 0.8 m or less. Thereby, the curvature radius of the bendable part of the accommodation sheet 2 can be easily made sufficiently small while ensuring the impact resistance and weather resistance necessary for protecting the LED element 3. In addition, the width of the connecting portion including the bendable portion can be made sufficiently small, and the pitch of the LED elements mounted with the connecting portion interposed therebetween can be optimized to a desired width.

  Further, when relatively higher definition is required for the LED information display device 200, the display surface side sheet 21 and the rear surface can be used in order to meet the demand by setting the pitch of the LED elements smaller. As the resin sheet used as the side sheet 22, it is preferable to use a resin sheet having a thickness of 0.4 mm or more and 0.6 mm or less. Moreover, according to this, the cost of material resin can be reduced and it can contribute also to the improvement of economical efficiency.

  On the other hand, in particular, when the LED information display device 200 is required to have relatively higher weather resistance, the storage sheet 2 is provided with higher weather resistance, and in order to meet such a request, the display surface side sheet The resin sheets used as 21 and the back side sheet 22 are preferably 0.7 mm or more and 0.8 mm or less.

As shown in FIG. 6A, the resin sheet constituting the storage sheet 2 is made thinner (t ₁₁ , t ₁₂ ) than the conventional one, so that the display surface side sheet 21 is sufficiently mounted on the LED at the connecting portion. Can wrap around the side of the module. Thereby, generation | occurrence | production of the clearance gap G shown to FIG. 7A which was easy to generate | occur | produce when the conventional relatively thick resin is used can also be suppressed. When the gap G as shown in FIG. 7A exists in the storage sheet 2, the moisture resistance and waterproofness of the storage sheet 2 are reduced, or durability is increased due to tearing or peeling starting from the periphery of the gap G. This is not preferable because the falling droop increases.

[Folding structure of LED display panel]
As shown in FIGS. 5A and 5B, the storage sheet 2 is formed by connecting the display surface side sheet 21 and the back surface sheet 22 in close contact between the storage units in which the LED mounting modules 10 are stored. As shown in FIG. 5A, the portion is alternately folded in a mountain fold and valley so that the portion can be folded compactly. In addition, when there are only two LED mounting modules accommodated in the accommodation sheet 2, the folding may be mountain fold or valley fold, but the folding is performed by folding the display surface side sheet 21 so as to be inside. The LED element can be more reliably prevented from being damaged by an external impact.

7A and 7B show a layer configuration of a foldable portion and an aspect at the time of folding in a conventional LED display panel having a general configuration. As shown in FIG. 7B, the conventional foldable LED display panel 100B using a resin sheet having a sheet thickness of t ₂₁ , t ₂₂ (generally 1.0 mm or more) as the material of the storage sheet is folded. In this case, the diameter of the bent portion of the bendable portion often rises beyond the thickness of the LED display panel, and the width of the bendable portion needs to be a certain width or more. For this reason, inevitably, the pitch P2 between the LED elements 3 mounted across the connecting portion between the LED mounting modules 10 accommodated adjacently in this portion must be larger than necessary. I didn't get it.

On the other hand, as described above, the LED display according to the present invention in which the thickness of the resin sheet used as the containing sheet 2 is t ₁₁ , t ₁₂ , specifically, 0.3 mm or more and 0.8 m or less. In panel 100, unnecessary bulging of the bent portion of the bendable portion as shown in FIG. 7B is reduced, and as shown in FIG. 6B, the bent portion has a thickness range of LED display panel 100A that is smoothly folded. Fits within. In addition, since the width of the connecting portion that becomes the bendable portion can be set to a certain width or less, the pitch P1 between the LED elements 3 mounted across the connecting portion is made easier than the conventional product. Can be small.

  Specifically, according to the present invention, when the pitch of the LED elements 3 on the LED element substrate 1 is 10 mm or more and 15 m or less, the accommodation sheet 2 as described above is provided. The pitch between the LED elements 3 mounted while sandwiching the connecting portion while maintaining the compactness at the time of folding so that the bent portion of the folding portion can be smoothly accommodated within the thickness range of the LED display panel 100 (Corresponding to P1 in FIG. 6A) is set to 11.5 mm to 16.5 mm, and the difference between the former pitch and the latter pitch can be controlled to 1.5 mm or less.

  In the LED display panel 100 of the present invention, the width of the connecting portion is 10 mm so that the pitch (corresponding to P1 in FIG. 6A) between the LED elements 3 mounted across the connecting portion can be 12.5 mm. In addition, in the case where a resin sheet made of vinyl chloride is used as the containing sheet 2, whether or not the bent portion of the folded portion can be accommodated in the width of the total thickness (5 mm × 2 = 10 mm) of the LED display panel 100. The thickness of the resin sheet was changed step by step, and when the thickness was 1.0 mm, the bent part did not fit within the width as shown in FIG. 7B, but 0.8 mm or less. As a result, the bent portion was smoothly accommodated within the width as shown in FIG. 6B. The evaluation of the above bending mode is performed by bonding two resin sheets of respective thicknesses constituting the storage sheet, pinching both end portions, and bending the other portions in a free state. Was determined based on whether or not the outer edge of the bent portion protruded from the total thickness of the LED display panel 100 (5 mm × 2 = 10 mm).

  On the other hand, at least in the case where vinyl chloride is used as the material resin, it has been confirmed that the thickness of the resin sheet constituting the housing sheet 2 is required to be 0.3 mm or more from the viewpoint of weather resistance. About this, while reducing the thickness of the resin sheet which comprises the accommodation sheet | seat 2 in steps, about the LED information display apparatus, as a result of performing a rubbing resistance test, when the thickness was reduced to 0.2 mm, It has been verified by the loss of waterproofness. The abrasion resistance test was performed according to JIS standard (JIS K 7218-1986) using an A & D friction and abrasion tester EFM-III.

<LED information display device>
By connecting the LED display panel 100 described above to the external operation base 7, the LED information display device 200 including the LED display panel 100 as an information display unit can be obtained.

  The LED information display device 200 is put to practical use by allowing the LED display panel 100 to stand on its own with various auxiliary devices (not shown) as needed, or to be installed on the wall surface of the installation site.

  The external operation base 7 is a component / device having a function of controlling the lighting timing, lighting time, etc. individually for each LED element 3 mounted on each LED mounting module 10. For example, timing control Can be realized as an executable program such as a ROM on which a program is executed as a program, a substrate on which the algorithm is mounted as an IC chip, and the like. The overall control unit can be provided at the end as a system separate from the connecting portion of the LED mounting module, for example, depending on the convenience of use, but the arrangement position is not particularly limited.

  As described above, according to the present invention, it is possible to provide an LED information display device that achieves both ease of conveyance due to compactness when folded and display quality, particularly high definition of display.

DESCRIPTION OF SYMBOLS 1 LED element board | substrate 2 Accommodating sheet 21 Display surface side sheet 22 Back side sheet 23 Accommodating sheet sealing part 24 Accommodating sheet connecting part 3 LED element 4 Wiring 5 Relay board 6 Driver 7 External operation board 10 LED mounting module 11 Support board 12 Spacer 13 Black layer 14 Back side reinforcing plate 15 Diffusion plate 100 LED display panel 200 LED information display device

Claims (8)

An LED mounting module in which an LED element is mounted on an LED element substrate;
The display surface side sheet and the back side sheet are laminated,
A storage sheet that can be accommodated in a state where a plurality of the LED mounting modules are connected between the display surface side sheet and the back side sheet, and can be folded at a connection portion between the LED mounting modules. An LED display panel comprising:
The storage sheet is
Both the display surface side sheet and the back surface sheet are LED display panels having a thickness of 0.3 mm or more and 0.8 m or less.   The LED display panel according to claim 1, wherein each of the display surface side sheet and the back surface sheet is a resin sheet having a thickness of 0.4 mm to 0.6 mm.   2. The LED display panel according to claim 1, wherein each of the display surface side sheet and the back surface sheet is a resin sheet having a thickness of 0.7 mm or more and 0.8 mm or less. The mounting pitch of the LED elements on the LED element substrate is 10 mm or more and 15 m or less,
The difference between the mounting pitch of the LED elements in the part straddling the connecting portion between the LED mounting modules and the mounting pitch of the LED elements on each LED element substrate is 1.5 mm or less. 4. The LED display panel according to any one of 3 above.   The said display surface side sheet | seat and the said back side sheet | seat are resin sheets which comprise one resin selected from vinyl chloride, a PVC coating sheet, a polyethylene sheet, and nylon. LED display panel.   The LED display panel according to claim 1, wherein the LED element substrate is a flexible substrate having a resin film as a support substrate. In the storage sheet, a control unit that controls lighting of the LED element is stored,
The LED display panel according to claim 1, wherein the control unit is electrically connected to the LED mounting module by a flexible wiring disposed in the housing sheet.   The LED information display apparatus provided with the LED display panel in any one of Claim 1 to 7 as an information display part.

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