JP2009239236A - Led module, and led display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an LED module that provides displays to a person in front of the LED module and a person behind it simultaneously. <P>SOLUTION: The LED module 1 includes a fitting plate 2, openings 3 formed in the fitting plate 2 longitudinally and laterally at predetermined intervals, LED units 4 suitable for the vicinity of the openings 3 of the fitting plate 2 and emitting light toward the respective openings 3, and optical control units 5 arranged in the openings 3 and emitting the illumination light of the LED units 4 toward the front side and back side of the fitting plate 2. It is preferred that each optical control unit 5 is constituted by dispersing diffusion pieces 52 in a light-transmissive resin 51, and in a nearly spherical or nearly oval shape. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an LED module and an LED display device that perform display using LEDs as pixels.

  2. Description of the Related Art Conventionally, LED modules that perform display using LEDs (light emitting diodes) for pixels are known. For example, in Patent Document 1, LEDs are provided in front of intersections of a rectangular mesh substrate, and LEDs serving as pixels are arranged vertically and horizontally, and a control unit and a drive unit corresponding to each LED and a wiring connecting them are connected to the square. An LED module provided on the back of a vertical cross or a horizontal cross of a mesh substrate is disclosed.

JP-A-2005-345900

  By the way, the existing LED module like the said patent document 1 light-emits LED with respect to the front side of the board | substrate which is the LED installation side of a board | substrate, and displays to the person located in the front side of an LED module It is. However, in the display of the LED module, there is also a demand for an LED module that can display simultaneously for a person located on the front side of the LED module and a person located on the back side.

  This invention is proposed in view of the said subject, Comprising: The LED module and LED display apparatus which can perform a display simultaneously with respect to the person located in the front side of a LED module, and the person located in a back side are provided. For the purpose.

  The LED module of the present invention includes a mounting board, an opening formed at a predetermined interval in the mounting board, and an LED unit that is mounted near the opening of the mounting board and emits light toward each of the openings. And a light control unit disposed in the opening and emitting light emitted from the LED unit to at least the front side and the back side of the mounting substrate. The mounting substrate can be, for example, an insulating resin film, etc., and can be a mounting substrate in which openings and LED portions are provided vertically and horizontally, or an elongated mounting substrate in which openings and LED portions are provided vertically or horizontally. Is possible. In addition, the LED portion can be provided with a single color LED in addition to a configuration in which RGB LEDs arranged close to each other are provided as a unit. Moreover, although it is good also as a structure which installs LED which irradiates ahead in a horizontal direction in a LED part, it is suitable if it is set as the structure which installs the side view type LED in which the light emission of LED is irradiated sideways.

  In the LED module of the present invention, the opening is formed larger than the light control unit, and a gap is formed between the opening and the light control unit. The gap between the opening and the light control unit ensures a see-through from the front side to the back side and a see-through from the back side to the front side, and realizes a display in which the opposite side can be seen through on both sides. it can.

  In the LED module of the present invention, the light control unit is configured to cover the light emitting unit of the LED unit and diffuse and emit the irradiation light of the LED unit. With the above configuration, it is possible to recognize pixels in a wide range and to make the display of the LED module visible from a wide range. In addition, the uniformity of bright spots can be improved.

  In the LED module of the present invention, the light control unit is configured by dispersing and embedding diffusion pieces having a melting temperature higher than that of the translucent resin in the translucent resin. With the above configuration, an effective light diffusion effect can be obtained with a low cost and simple structure, and pixels can be recognized in a wider range, and the display of the LED module can be visually recognized from a wider range. . Further, the light control unit can be easily manufactured by dispersing and molding the diffusion piece in the translucent resin.

  Moreover, the LED module of the present invention is characterized in that the light control unit is formed in a substantially spherical shape or a substantially oval shape, and the irradiation light of the LED unit is emitted in almost all directions. With the above configuration, in addition to the front side and the back side of the LED module, for example, the display of the LED module can be viewed from the substantially side surface of the LED module, and the LED module can be viewed from almost all directions. Become. Further, the display quality on the front side and the back side can be made substantially equal.

  Moreover, the LED module of the present invention is characterized in that the mounting substrate is translucent. With this configuration, the translucency from the front side to the back side or from the back side to the front side can be dramatically improved.

  The LED module of the present invention is characterized in that the mounting substrate is formed with openings different from the openings vertically and horizontally at predetermined intervals. With the configuration in which the other opening is formed, the translucency of the mounting substrate can be significantly increased, and the LED module can be further improved in see-through property and aesthetics.

  In addition, the LED display device of the present invention is configured by arranging a plurality of the LED modules of the present invention in a predetermined pattern. With the above configuration, a large-screen LED display device having the characteristics of the LED module of the present invention can be obtained.

  The invention disclosed in this specification includes, in addition to the configurations of each invention and each embodiment, those specified by changing these partial configurations to other configurations disclosed in this specification, or these configurations. To which other configurations disclosed in the present specification are added and specified, or those partial configurations deleted and specified to the extent that partial effects can be obtained are included. Further, the light control unit is appropriate in addition to the above configuration, and for example, a light guide plate that irradiates light on the front side and the back side can be used. The light guide plate has an end surface on the light emitting unit of the LED unit, for example. It is set as the structure arrange | positioned so that it may adjoin or closely. Also, a diffusion function may be enhanced by applying a resin mixed with a diffusion piece to a light control unit such as a reflector.

  The LED module or LED display device of the present invention forms an opening in the mounting substrate, irradiates the LED light toward the opening, and emits the LED irradiation light to the front side and the back side by the light control unit in the opening. By doing this, it is possible to simultaneously display to the person located on the front side of the LED module and the person located on the back side.

  The present invention will be described based on the LED module and the LED display device of the embodiment.

[First Embodiment]
As shown in FIGS. 1 to 3, the LED module 1 according to the first embodiment is disposed in the mounting substrate 2, the opening 3 formed in the mounting substrate 2 at predetermined intervals in the vertical and horizontal directions, and the opening 3. The lamp body is attached in the vicinity of the opening 3 of the mounting substrate 2 and is disposed in the opening 3 to irradiate light toward each of the openings 3. The light control unit 5 is configured to emit light emitted from the unit 4 in almost all directions including the front side and the back side of the mounting substrate 2.

  The mounting substrate 2 has a rectangular shape when viewed from the front, and substantially circular openings 3 that pass therethrough are arranged in a matrix at predetermined intervals in the vertical and horizontal directions, and mounting holes 21 are formed at the respective corners. The mounting substrate 2 can be formed of an appropriate material, but it may be formed of an insulating material, or a material that can obtain appropriate strength, flexibility, and elasticity. For example, it is preferable to form a printed wiring board made of glass fiber plastic, glass epoxy resin, polyimide or the like. The diameter of the opening 3 is preferably about 3 mm to 35 mm, for example.

  Note that it is preferable to form the mounting substrate 2 from a flexible material in order to save space and facilitate transportation, or to form a curved display. Further, in order to further improve the translucency, the mounting substrate 2 may be formed of a translucent material, for example, preferably formed of PET (polyethylene terephthalate), PEN (polyethylene naphthalate), or PC (polycarbonate). . When the translucent mounting substrate 2 is used, for example, a transparent conductive film such as ITO (indium tin oxide) is used, and an opaque conductive paste 6 having a higher conductivity than the transparent conductive film is used as necessary. It is preferable to coat in a shape. In addition, the shape of the opening 3 of the present embodiment is substantially circular, but is not limited to the above-described shape. An appropriate shape such as a polygon can be used.

  The lamp body portion includes an LED portion 4 provided on the mounting substrate 2 near the opening 3 and a light control portion 5 disposed in the opening 3. The LED unit 4 includes an LED 41 including a light emitting unit 411 and a housing 412, and a rectangular holding substrate 42 that holds the LED 41, and the housing 412 of the LED 41 is on one surface near one end of the holding substrate 42. It is fixedly attached to the side. The holding substrate 42 is preferably formed using, for example, glass epoxy resin, polycarbonate, or the like as a material. The LED 41 is a side-view type LED, which emits light from the light emitting unit 411 toward the side, and emits light toward the approximate center of the light control unit 5 described later. Yes. The one surface in the vicinity of the other end of the holding substrate 42 is fixed to the mounting substrate 2, and the LED 41 or its light emitting portion 411 is disposed in the opening 3.

  Each LED 41 is connected to the control unit 44 and the drive unit 45 shown in FIG. 4 via the wiring 43, and the control unit 44 and the drive unit 45 are provided in the vicinity of the periphery of the mounting substrate 2 or each of the mounting substrate 2. Provided in the vicinity of the opening 3. In the control unit 44 corresponding to each LED 41, an address for recognizing the dimming control signal is set and stored in the built-in memory. The control unit 44 and the drive unit 45 corresponding to each LED 41 are supplied with a dimming control signal from the transmission device 6 and also supplied with power from the power supply device 7, and S in FIG. An optical control signal line, P is a power line, and G is a ground line. The dimming control signal supplied from the transmitting device 6 includes dimming control data corresponding to the setting addresses of all the control units 44 of each LED 41 such as a DMX signal, for example. The dimming control data corresponding to its own set address is recognized from the signal, and the corresponding LED 41 is driven by the driving unit 45. Reference numerals 46r, 46g, and 46b are red, green, and blue display LEDs built in each LED.

  The light control unit 5 covers the periphery of the light emitting unit 411 of the LED unit 4 in a substantially spherical shape, and is embedded in the substantially spherical translucent resin 51 and the translucent resin 51 in a substantially uniform and dispersed manner. And a substantially spherical diffusion piece 52. In the mounting hole 53 formed in the translucent resin 51, a part of the LED unit 4, in this embodiment, a part of the light emitting unit 411, a part of the housing 412, and a part of the holding substrate 42 are inserted and fixed, The light control unit 5 is disposed substantially at the center in the opening 3 so as to be supported by the holding substrate 42.

  The substantially spherical translucent resin 51 is formed using, for example, various plastic molding materials such as acrylic and polycarbonate. The size of the translucent resin 51 or the light control unit 5 is appropriate as long as it is smaller than the size of the opening 3 so that a gap can be formed between the opening 3 and the translucent resin 51 or the light control unit 5. However, the diameter is preferably about 2 mm to 30 mm, for example. In the present invention, the size of the opening 3 and the light control unit 5 are the same, or the opening 3 is slightly larger than the light control unit 5, so that there is no gap between the opening 3 and the light control unit 5. It is also possible. When a gap is formed between the opening 3 and the light control unit 5, light is diffusely reflected at the periphery of the opening 3 to obtain soft light, and the see-through property can be secured. In the absence of contrast, the contrast can be improved.

  In addition, the diffusion piece 52 in the present embodiment is a substantially spherical glass bead, and the diameter of the diffusion piece 52 of this example is about 10 μm to 200 μm. The size of the diffusion piece 52 is preferably about 1/100 to 1/10 of the size of the light control unit 5. The glass beads are dispersed and arranged in the translucent resin 51 by stirring and mixing at the time of manufacture. An appropriate material can be used for the diffusing piece 52, but glass beads generally have better heat resistance than the translucent resin 51 and are not easily melted. Therefore, the light control unit 5 is mixed with the translucent resin 51. Is easy to manufacture, and is inexpensive, so it is a good material for the diffusion piece 52. Furthermore, in addition to glass beads, it is preferable to use a material such as a light-transmitting resin having a melting temperature higher than that of the light-transmitting resin 51 because the manufacturing operation becomes easy. Further, the shape of the diffusing piece 52 is not limited to a spherical shape, and the diameter is not limited to the above-mentioned size, but is preferably set to one fifth or less of the size of the light emitting portion 411.

  The LED module 1 according to the first embodiment can be used alone, but a plurality of LED modules 1 may be arranged in a predetermined pattern to constitute an LED display device. For example, as shown in FIG. 1, a grid array fixture 8 composed of vertical bars and horizontal bars is used, and the LED modules 1 are arranged in a matrix by the grid array fixture 8, and a plurality of LED modules 1 are arranged in a matrix. The LED display device is arranged. Concave grooves are formed in the opposing surfaces of the vertical beam and the horizontal beam, respectively, along the longitudinal direction, and the LED module 1 is attached to the grid array device 8 by engaging the vicinity of the periphery of each LED module 1 with the groove. Removably attached. Wiring drawn from each LED module 1 is led to the peripheral portion or the outer periphery of the LED display device along, for example, the vertical beam or the horizontal beam, or both, and is arranged at the peripheral portion or the outer periphery. And a power supply circuit and the like. With the above configuration, for example, a large-screen LED display device can be configured. Instead of the LED display device using the grid-type array fixture 8, screw holes are provided corresponding to the four corners of each opening of the grid-type array fixture composed of vertical bars and horizontal bars, and are inserted into the screw holes. An LED display device may be configured by attaching the LED module 1 to the lattice array device.

  In the LED module 1 and the LED display device of the first embodiment, an opening 3 is formed in the mounting substrate 2, and light is emitted from the light emitting unit 411 of the LED unit 4 toward the approximate center of the opening 3 in the opening 3. The substantially spherical light control unit 5 in the opening 3 can emit the irradiation light from the light emitting unit 411 in almost all directions including the front side and the back side of the LED module 1, and the front side of the LED module 1. In addition, it is possible to simultaneously display to persons located in each direction such as the back side. Further, by irradiating the substantially spherical light control unit 5 with LED light from the side, the display quality on the front side and the back side can be made substantially equal. In addition, a see-through from the front side to the back side and a see-through from the back side to the front side can be secured by the opening 3, and a display in which the opposite side can be seen through on both sides can be realized. Further, by diffusing the light control unit 5 with the diffusing piece 52, the light diffusion effect can be obtained with a low cost and simple structure so that the pixels can be recognized in a wide range, and the display of the LED module 1 can be performed from a wide range. It can be visually recognized. In addition, by configuring the light control unit 5 with a translucent resin that covers the light emitting unit 411, for example, when the holding substrate 42 is bent due to wind when used outdoors, the state change of the pixel is suppressed as much as possible. , Visibility can be prevented from lowering.

[Second Embodiment]
As shown in FIG. 5A, the LED module 1 of the second embodiment is different from the first embodiment only in the light control unit 5a of the lamp unit. The light control unit 5a is substantially spherical in the first embodiment, whereas it is substantially oval in the second embodiment, and is attached so that its long axis direction is along the surface of the mounting substrate 2. The light control unit 5a is formed of a translucent resin 51a, in which the diffusion pieces 52a are arranged in a substantially uniform manner, and an attachment hole 53a is formed. The light emitting unit 411 of the LED unit 4 is attached so as to irradiate light substantially toward the center in the long axis direction of the light control unit 5a. Other configurations are the same as those of the first embodiment. In the light control unit 5a in the second embodiment, the function of irradiating light in all directions is slightly weaker than that in the first embodiment, but it is more suitable for those who are located on the front side and the back side of the LED module 1. Bright display can be performed.

[Third Embodiment]
As shown in FIG. 5B, the LED module 1 of the third embodiment is different from the first embodiment only in the light control unit 5b of the lamp unit. The light control unit 5b has a substantially oval shape with a wall thickness, and is arranged so that the flat surface part 54b is along the surface of the mounting substrate 2 and the major axis direction is aligned with the light irradiation direction. The light control unit 5b is formed of a translucent resin 51b, in which the diffusing pieces 52b are substantially uniformly dispersed, and an attachment hole 53b is formed. The light emitting unit 411 of the LED unit 4 is attached so as to irradiate light substantially toward the center in the long axis direction of the light control unit 5b. Other configurations are the same as those of the first embodiment. In the light control unit 5b according to the third embodiment, it is possible to perform good display for persons located on the front side and the back side of the LED module 1. The light control unit 5b may be a substantially thick drum shape having a circular thickness instead of the substantially oval shape, and planar portions on both sides of the light control unit 5b having a substantially oval or substantially drum shape. A light-transmitting reinforcing plate 573f having a diffusion function, which will be described later, may be attached to 54b in close contact.

[Fourth Embodiment]
As shown in FIG. 6, the LED module 1 of the fourth embodiment is different from the first embodiment only in the mounting substrate 2 c. The mounting board 2c has a vertical beam 92c and a horizontal beam 93c formed vertically and horizontally at predetermined intervals in a rectangular frame 91c, and has a rectangular opening 94c surrounded by the vertical beam 92c and the horizontal beam 93c. The opening 94c is a predetermined value. They are arranged vertically and horizontally at intervals. A substantially circular opening 3c corresponding to the opening 3 of the first embodiment is formed at the intersection of the vertical beam 92c and the horizontal beam 93c, and the LED portion 4 corresponds to the opening 3c in the same manner as in the first embodiment. And a light body part composed of the light control part 5 is provided. 21c is a mounting hole. Other configurations are the same as those of the first embodiment. In the mounting substrate 2c in the fourth embodiment, the opening 94c different from the opening 3c is formed, so that the light transmittance of the mounting substrate 2c is improved and the see-through property is extremely high. Display can be realized.

[Fifth Embodiment]
As shown in FIG. 7A, the LED module 1 of the fifth embodiment is different from the first embodiment only in the light control unit 5d of the lamp unit. The light control unit 5d is a spoon-shaped reflector, and the reflector is milky white, has a diffusing function, and is formed of a light-transmitting resin. The light control unit 5d is arranged with the concave curved surface 551d facing the front side of the LED module 1 and the convex curved surface 552d facing the back side, and one end thereof is fixed to the holding substrate 42, and the light emitting unit of the LED unit 4 411 irradiates light toward the approximate center of the concave surface 551d. The holding substrate 42 is preferably formed of a highly rigid material in order to suppress pixel state changes. Other configurations are the same as those of the first embodiment. In the light control unit 5d in the fifth embodiment, the display on the back side of the LED module 1 is slightly inferior, but an excellent display can be performed on the front side.

[Sixth Embodiment]
As shown in FIG. 7B, the LED module 1 of the sixth embodiment is different from the first embodiment only in the light control unit 5e of the lamp unit. The light control unit 5e is an eaves-shaped reflector, and the reflector is milky white, has a diffusing function, and is formed of a translucent resin. The light control unit 5e is arranged with the substantially planar inner surface 561e facing the front side of the LED module 1 and the substantially planar outer surface 562e facing the rear side, and one end thereof is fixed to the holding substrate 42. The light emitting unit 411 of the LED unit 4 emits light toward the approximate center of the inner surface 561e. The holding substrate 42 is preferably formed of a highly rigid material in order to suppress pixel state changes. Other configurations are the same as those of the first embodiment. In the light control unit 5e according to the sixth embodiment, the display on the back side of the LED module 1 is slightly inferior, but an excellent display can be performed on the front side.

[Seventh Embodiment]
As shown in FIG. 8, the LED module 1 according to the seventh embodiment is different from the first embodiment only in the configuration having the light control unit 5f and the reinforcing plate 573f that reinforces and supports the light control unit 5f. The light control unit 5f is substantially spherical in the first embodiment, whereas it is substantially hemispherical in the second embodiment, and is arranged so that the hemispherical surface 571f side is the front side of the LED module 1, and the flat surface 572f side is It arrange | positions so that it may become the back side of the LED module 1. FIG. The light control unit 5f is formed of a translucent resin 51f, in which the diffusion pieces 52f are arranged substantially uniformly and a mounting hole 53f is formed. The light emitting unit 411 of the LED unit 4 is attached so as to emit light toward the substantial center of the light control unit 5f. A reinforcing plate 573f having substantially the same width as the light control unit 5f is fixed to the flat surface 572 side of the light control unit 5f, and the reinforcing plate 573f is fixed to the mounting substrate 2 in the vicinity of the opening 3. The reinforcing plate 573f is milky white, has a diffusing function, and is formed of a translucent resin, and further diffuses and emits light emitted from the light control unit 5f to the back surface side. Other configurations are the same as those of the first embodiment. In the light control unit 5f according to the seventh embodiment, the display on the back side of the LED module 1 is slightly inferior, but an excellent display can be performed on the front side. Further, the mounting strength and installation stability can be increased by supporting the light diffusion portion 5f by the reinforcing plate 573f.

[Eighth Embodiment]
As shown in FIG. 9, the LED module 1 of the eighth embodiment is different from the first embodiment only in the light control unit 5g of the lamp unit. In the light control unit 5g, one end of a hollow case 59g is fixed to the outside of the light emitting unit 411, and a substantially triangular pyramid-shaped reflector 58g is provided in the case 59g at the other end. The irradiation light emitted from the light emitting unit 411 toward the reflecting plate 58g is reflected by the reflecting plate 58g. The irradiation light reflected by one reflection surface 581g which is a parabolic surface of the reflection plate 58g is emitted from the front side of the LED module 1, and the irradiation light reflected by the other reflection surface 582g which is a parabolic surface is: The light is emitted from the back side of the LED module 1. Note that the holding substrate 42 of the present embodiment is preferably formed of a highly rigid material in order to suppress changes in the state of the pixels. Other configurations are the same as those of the first embodiment. The light control unit 5g in the eighth embodiment can perform excellent display on both the front side and the back side of the LED module 1.

[Modifications of Embodiment, etc.]
The present invention can be variously modified in addition to the first to eighth embodiments. For example, as in the LED module 1 of the first embodiment, the lamp body is attached to the mounting substrate 2 via the holding substrate 42. 10, as shown in FIG. 10, a protrusion 22 that is integrally formed with the mounting substrate 2 and partially protrudes in the opening 3 is provided, and a lamp body portion is provided on the end surface, upper surface, or lower surface of the protrusion 22. That is, the LED 41 configured by the light emitting unit 411 and the housing 412 may be provided, and the same configuration can be used in other embodiments. With the above configuration, it is not necessary to fix the holding member 42 to the mounting substrate 2, and it is possible to prevent the lamp body portion from being bent as compared with the case where the holding member 42 is provided.

  Further, when the light emitting unit 411 of the lamp unit is embedded in the light control unit 5 as in the LED module 1 of the first embodiment, a more uniform bright spot close to a circle is obtained, and the sharpness is increased. As shown in FIG. 11, the light control unit 5 is attached in the vicinity of the tip of the holding substrate 42 or the protruding portion 22, and the lamp body emits light on the upper surface or the lower surface of the holding substrate 42 or the protruding portion 22. It is also possible to provide the portion 411 and further away from the light control unit 5, or to contact the surface of the light control unit 5, and use other light-transmitting resin as the light control unit. The same applies to the embodiment. With the above configuration, it is possible to obtain a display with softer light, and it is not necessary to embed the lamp body in the light control unit, and the lamp body can be easily mounted.

  In addition, in the light control unit using the translucent resin, the light control unit using the reflector, and the light control unit using the light guide plate, the display LED is in contact with the light control unit, or the non-contact configuration. In the case where the contact is made by the light control unit made of a translucent resin, for example, a configuration in which a display LED is embedded in the translucent resin, or a spherical surface of the light control unit, etc. It is possible to adopt a configuration that makes contact with a basic shape.

  INDUSTRIAL APPLICABILITY The present invention can be used as an LED module and an LED display device that display using LEDs as pixels.

The front view of the LED module of 1st Embodiment. The partial front view of the LED module of 1st Embodiment. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. The block diagram which shows the control structure of the LED module of 1st Embodiment. (A) is a top view which shows the lamp body part in the LED module of 2nd Embodiment, (b) is a top view which shows the lamp body part in the LED module of 3rd Embodiment. The partial front view of the LED module of 4th Embodiment. (A) is a top view which shows the lamp body part in the LED module of 5th Embodiment, (b) is a top view which shows the lamp body part in the LED module of 6th Embodiment. The cross-sectional view of the LED module of 7th Embodiment. The top view of the LED module of 8th Embodiment. The cross-sectional view which shows the modification of the LED module of 1st Embodiment. The cross-sectional view which shows another modification of the LED module of 1st Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... LED module 2 ... Mounting board 21, 21c ... Mounting hole 22 ... Protrusion part 3, 3c ... Opening 4 ... LED part 41 ... LED 411 ... Light emission part 412 ... Case 42 ... Holding board 43 ... Wiring 44 ... Control part 45 ... Driver 46r, 46g, 46b ... Display LED 5, 5a, 5b, 5d, 5e, 5f, 5g ... Light controller 51, 51a, 51b, 51f ... Translucent resin 52, 52a, 52b, 52f ... Diffusion Piece 53, 53a, 53b, 53f ... Mounting hole 54b ... Plane portion 551d ... Concave surface 552d ... Convex surface 561e ... Inner surface 562e ... Outer surface 571f ... Hemispherical surface 572f ... Plane 573f ... Reinforcement plate 58g ... Reflector plate 581g, 582g ... Reflection surface 59g ... Case 6 ... Transmitting device 7 ... Power supply device 8 ... Lattice array device 91c ... Frame 92c ... Vertical rail 93c ... Horizontal 94c ... opening

Claims (8)

A mounting substrate;
An opening formed at a predetermined interval in the mounting substrate;
An LED unit that is mounted near the opening of the mounting substrate and that emits light toward each of the openings;
An LED module, comprising: a light control unit disposed in the opening and configured to emit light emitted from the LED unit to at least a front side and a back side of the mounting substrate. Forming the opening larger than the light control unit;
An LED module, wherein a gap is formed between the opening and the light control unit.   The LED module according to claim 1, wherein the light control unit is configured to cover a light emitting unit of the LED unit and diffuse and emit the irradiation light of the LED unit.   4. The LED module according to claim 3, wherein the light control unit is configured by dispersing and burying diffusion pieces having a melting temperature higher than that of the light-transmitting resin in the light-transmitting resin.   5. The LED module according to claim 1, wherein the light control unit has a substantially spherical shape or a substantially oval shape, and emits light emitted from the LED unit in almost all directions.   The LED module according to claim 1, wherein the mounting substrate is translucent.   The LED module according to any one of claims 1 to 6, wherein the mounting substrate is formed with openings different from the openings vertically and horizontally at predetermined intervals.   An LED display device comprising a plurality of LED modules according to claim 1 arranged in a predetermined pattern.

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