JP2011081329A - Light emitting panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light emitting panel which uniformly emits light over a whole plane of a wide area signboard and an interior plate material for decoration, with small electric power. <P>SOLUTION: White LED light emitting objects 2A holding required brightness are arranged on opposing two side edges or four side edges of an outer peripheral edge of a translucent plate material 1 composed of a translucent material so as to have proper area and thickness, a reflection material 4 is also arranged on the back plane of the translucent plate material, a light control coating layer 3 using a light diffusion adhesion resin is formed, and also on the surface, a light diffusion material 5 is arranged. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a light-emitting panel that can emit light with a small electric power and uniform light intensity even in a large area, and is extremely suitable for indoor and outdoor light-emitting signs, interior decorative light-emitting plates, and the like.

Advertising is an extremely important means in sales activities. For such advertising, it is effective to accurately determine the background of the times, market trends or the propensity to consume and determine the advertising medium to be used and the scope of advertising. It is considered extremely important for achieving effective advertising effects.
That is, as an example of this, since advertising in the past growth period was to satisfy as many consumers as possible, magazines and newspapers with a large number of copies, huge numbers of brochures and flyers, radios and televisions, etc. Using the mass media of the past, advertising has been made extensively and repeatedly.

  Thus, since the growth period has been fulfilled and coupled with the improvement of living standards, the trend toward consumerism has become richer in terms of luxury, individualization, and diversification. The so-called “individual” is intended to achieve a high advertising effect by focusing on the segmented consumers and areas using the mass media uniform advertising means using CATV, video, facsimile, personal computer communication, etc. It was changing to a means of advertising.

  And to this day, the market structure has changed remarkably along with the drastic change in the social environment. Specific reasons for this include nuclear families, an aging population, an increase in single households, employment of housewives, On the other hand, along with the increase in leisure activities on the other hand, the increase in the number of workers and working hours in these industries due to eating out and eating out of eating habits, convenience stores for convenient purchases and the increase of offices throughout the night, etc. As a result of the drastic fluctuations, the opportunity for face-to-face contact with the advertisement has been significantly diminished even when using the tentative independent advertising means, and the advertising effect cannot be expected. However, only advertising means other than radio can be used at the time of business, and advertising effects cannot be expected unless they are blessed with broadcasting media, broadcasting time, and a few listening opportunities.

  Under such circumstances, consumers such as commuters and students who use public institutions such as railroads and buses, etc., pass by many consumers on the premises, aisles, or in cars, etc. Since it is a place where the pillar, wall or ceiling surface standing on the premises or passage is in contact with a sufficient amount of time, it is not possible to provide an advertising signboard on the pillar, wall or ceiling surface. It is being recognized that extremely high advertising effects can be demonstrated, and even in the socialization of the car, drive enough time for advertising billboards in high-rise areas in front of straight roads and places with excellent views. It has also been recognized that passengers and passengers can make face-to-face contact and have a high advertising effect. These signboards are installed with a backlight in order to allow consumers who come into face-to-face contact both day and night to view the summary of advertisements.

  On the other hand, in the situation where the standard of living has improved remarkably as in today, the trend toward high-end, individuality, and diversification is increasing in terms of eating and drinking consumption. Therefore, in order to cope with the upsizing and diversification of eating and drinking spaces as well as the reform of food ingredients and recipes, landscape photography from creating a different dimension of the space and creating a variety of colors, from simply changing the floor plan and interior materials The use of decorative board materials in combination with a backlight is being actively adopted.

  By the way, the current backlights are used for thin signboards and decorative boards, but they have a large area, especially in outdoor signage, which covers a very large area. Although many fluorescent lamps were arranged in the initial stage, they require enormous power and the overall size is increased, so that the light source is converted to an LED luminous body to reduce power consumption and reduce the size and size. However, LED light emitters are close to point light emission, so even if a large number of LED light emitters are arranged on the back side of a signboard or decorative plate material, uniform light emission is difficult to be made over the entire surface, and clear images and characters are drawn and recognized. I have a difficult problem.

For this reason, in recent years, LED light emitters are arranged at a required interval on two or four opposite side surfaces of the outer peripheral edge of the translucent plate material, and the light emitted from the LED light emitters is transmitted through the translucent plate. A diffuser sheet that allows the entire surface to emit light sufficiently by allowing a reflective sheet material or the like to be disposed on the back surface while allowing the inside of the conductive plate to transmit light, and further diffusing and dispersing the reflected light that is transmitted and reflected on the surface. It is being replaced by a translucent plate, that is, a light emitting panel.
However, as the diffusion sheet in the current translucent plate material, a light diffusing resin capable of diffusing the reflected light reflected by the reflection sheet is finely granulated and printed by silk printing or spray coating printing. However, in silk printing, productivity is inferior, and in spray coating printing, the coating is non-uniform and spots are generated in light emission.

Furthermore, the use of an LED illuminant as a light emitting source can be realized with low power and small size and light weight, but the emitted light transmitted through the translucent plate is attenuated according to the distance from the LED illuminant light source, A large area has a problem that light intensity is reduced.
For this reason, the inventors have conducted further research, and as a result, the light-diffusing contact resin can be applied and printed with the required particle size by the ink jet printing means, and the applied printing density at an appropriate site can be freely changed. A light-emitting panel covering a wide area by changing the coating particle size and coating density of the light diffusing resin in accordance with the attenuation state of the light-emitting light transmitted through the light-transmitting plate. However, the present inventors have found out that the entire device can emit light uniformly and have reached the present invention.

  An object of the present invention is to provide a light-emitting panel capable of uniformly emitting light over a large area of a signboard or a decorative interior board material with a small electric power.

  The technical means used by the present invention in order to solve the above-mentioned problem is that the outer peripheral edge of the translucent plate made of a translucent material with an appropriate area and thickness is on the opposite two side edges or the four side edges. A white light LED illuminant that maintains the required luminous intensity is appropriately coordinated, and a reflective material is disposed on the back side of the translucent plate, and the surface is translucent and fast using inkjet printing means. Using a light diffusing adhesive resin having dryness, the dot particle size and the coated dot density by the light diffusing adhesive resin are changed in response to the radiated light attenuated by the distance from the LED light source, thereby reflecting the reflector and the transparent plate. The reflected light reflected from the light-sensitive plate material is diffused over a wide range or more strongly diffused to emit light with the same luminous intensity.

The present invention is configured as described above, and the present invention is made of a translucent material having a required area and thickness, and has white light having a required light intensity on two opposite or four side surfaces of the outer peripheral edge thereof. On the back side surface of the translucent plate in which the required number of LED emitters are coordinated with a required interval, other light beams from the LED emitters transmitted through the translucent plate are provided. In a light-emitting panel in which a reflective material for reflecting and radiating on a side surface is disposed, and on the other side surface, a light diffusing material for diffusing the reflected and radiated reflected light into a surface light is disposed. A light diffusing adhesive resin having translucency and quick drying properties is used on the surface of the optical plate material by ink jet printing means, the dot particle size is 1 to 20 μm, and the applied dot density is 250,000 to 10 million dots / in cm ^2, or LED light emitter Thus also it is coordinated to the outer peripheral edge It is also possible that the diffused light emission intensity can be adjusted by changing the dot particle size corresponding to the attenuation due to the light transmission distance, or that the surface density can be sufficiently changed by changing the diffusion degree by changing the coating density. Thus, a light-emitting panel capable of emitting light with a uniform power with a small electric power can be formed even in a large area.

  In addition, in the present invention, a white light LED illuminant is used as the illuminant, whereas in the present invention, it is mainly used for backlighting indoor signboards, decorative interior board materials, In addition to indoor and outdoor signage, decorative interior boards are made with a variety of colors and designs, or photographs of natural scenery and night scenes are often used, raising the attention of consumers throughout the day and night. In the present invention, since a white light-emitting LED is used as a light-emitting light source, these various color tones, designs, photographs, etc. can be faithfully projected, and also in signboards and decorative interior boards over a wide area. Since the light is emitted with the same luminous intensity throughout, the entire color, design or photograph can be reproduced beautifully.

On one side of a translucent plate made of an acrylic resin material with a required area and thickness, a quick-drying light diffusing resin made of an acrylic resin material is applied to the dot particle size of 10 μm by ink jet printing means and the translucent plate. LED made of white light on two opposite side surfaces of the outer peripheral edge of the light-transmitting plate material on which the light control coating layer coated with a dot density of 600 to 800 dots / cm ² so as to correspond to the light attenuation is formed A light-emitting part of the light-emitting body is arranged, and a reflective material formed by vapor-depositing aluminum on one side of the synthetic resin film is arranged on the back side of the light-transmitting plate, and the surface of the light-control coating layer is adjusted. A configuration in which a light diffusing material formed by subjecting a synthetic resin film material to prism processing is disposed in order to further diffuse the transmitted light transmitted through the light coating layer into a planar light beam.

  The embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a sketch of the translucent plate 1 according to the present invention, and FIG. 2 is an explanation of the light control coating layer 3 formed on the surface of the translucent plate. In this figure, the translucent plate 1 transmits the emitted light 2D from the LED light emitter 1B arranged at a required interval on the two opposite side faces or the four side faces of the outer peripheral edge 1A. A translucent material such as acrylic resin, polycarbonate resin, or glass is used, and is formed to have a required area and thickness. In order to allow the light-transmitting light beam having a desired light intensity to be incident and transmitted through the light-transmitting plate 1, the LED light emitter 2A is used for emitting the light-emitting light beam 2B having a sufficient light intensity with a small size and light weight. The

In FIG. 1, the LED illuminator 2 </ b> A is commonly referred to as a bullet-type LED illuminant 2 </ b> A, but a surface-mount type can also be used in addition to the cannonball-type.
These LED light emitters 2A are such that the emitted light beam 2D is emitted with a relatively narrow diffusion angle, and therefore after the emitted light beam 2D from the light emitting portion 2B of the LED light emitter 2A is diffused to some extent. It is desirable to allow light to enter from the side edge of the translucent plate 1, and for this purpose, the fitting 2 that can be fitted to the opposite two or four side edges of the translucent plate 1 is used. The base 2C of the LED light emitter 2A is disposed at appropriate intervals inside the tool 2, and the emitted light 2D emitted and diffused from the light emitting part 2B is made incident from the side edge of the translucent plate 1. Is proposed. In such a case, as the area of the translucent plate 1 is larger, the LED light emitters 2A having higher luminous intensity are installed facing each other at relatively short intervals, and further, on two opposite sides, that is, not only in the horizontal direction but also in the vertical direction. In addition, the LED light emitters 2A may be disposed at appropriate intervals.

  FIG. 2 is an explanatory view of a light-modulating coating layer 3 formed by coating and printing on a light-transmitting plate 1, and the present invention is used as a backlight for indoor and outdoor signboards, decorative interior plates, and the like. It is. More specifically, since the outdoor signboard is formed in a very large area, the translucent plate 1 used as the backlight also has a very large area. In the translucent plate 1 having such a large area, as shown in the drawing, the LED light emitters 2A having higher luminous intensity than the opposing side edges are disposed at a relatively close distance, and the emitted light beam 2D is then disposed. Even when the light is transmitted, the light intensity is gradually attenuated as light is transmitted over a long distance, that is, the light intensity decreases toward 3A-3B-3C in the figure. A phenomenon appears in which 3A becomes brighter and becomes darker as it reaches the central part, that is, the 3C part.

By the way, the emitted light 2D of the LED light emitter 2A incident from the end of the translucent plate 1 made of a translucent material is not only attenuated and attenuated in the translucent plate 1 but also released. From one side and the other side. Therefore, the reflective material 4 is disposed on the back side surface of the translucent plate 1 in order to prevent the emitted light beam 2D from being diffused and to diffuse from the other side surface.
There are various types of the reflective material 4, but it is light and inexpensive, and it is necessary to maintain excellent reflective performance. Therefore, a synthetic resin sheet or a film material laminated with aluminum foil, or a synthetic resin sheet, Examples of the film material include aluminum vapor deposition.

Accordingly, since the incident emitted light beam 2D is reflected by the back side surface due to the arrangement of the reflecting material 4, the surface is weighted and radiated, but is temporarily weighted by the attenuation of the incident light beam. Even after being diffused, from the entire surface of the translucent plate 1, the vicinity of the incident light beam 2D is bright and tends to darken toward the central portion, that is, toward 3A-3B-3C in the figure. Therefore, for use as a backlight in such a state, it is impossible to reproduce a clear projection such as advertisement design, color, or photograph. For this purpose, an ink jet printing means is used with a light-transmitting resin material 30 which is a light-transmitting resin material and has a quick drying property, and its dot particle size is in the range of 1 to 20 μm and the dot density is 250,000 to one. In order to dimm at least the entire other side of the translucent plate 1 to a uniform luminous intensity by changing the dot particle size and the dot density according to the attenuation degree of the emitted light 2D within the range of 10 million dots / cm ^2. The light control coating layer 3 is applied and formed.

In such a case, when a large dot particle size is used to form the light-control coating layer 3, the reflected and dissipated light rays from the reflecting material 4 and the translucent plate 1 are strong and dissipate at a high luminous intensity. Further, by increasing the dot density, the precise diffusion is promoted, the luminous intensity is eliminated, the luminous intensity is increased, and the light is diffused as a uniform reflected and diffused ray.
For the specific dot particle size and dot density for the formation of the light control coating layer 3, the light intensity of the LED light emitter 2A to be used and the LED light emission to be arranged, including the size of the translucent plate 1 to be used. It is specifically determined by the arrangement interval and the number of arrangement of the body 2A, or the type of video reproduction medium such as a catch phrase, design or color of advertisement to be reproduced and reproduced.

Furthermore, the light control coating agent 30 used for the light control coating layer 3 is a light-transmitting resin material and requires quick drying, and various types thereof can be mentioned. It uses α-cyanoacrylate, which has the function of quickly curing with moisture. In order to prevent curing during storage, ultraviolet rays are applied to liquid monomers and oligomers with addition of a polymerization inhibitor based on sulfur dioxide and hydroquinone. By irradiating, a curing type can be mentioned, and there are those in which a benzophenone compound is blended as a photosensitizer in oligoacrylate, epoxy acrylate, urethane acrylate, silicon acrylate, spiraline acrylate or the like.
The light-modulating coating layer 3 is arranged with a light diffusing material which is further finely and diffused in many directions to divide the emitted light which is dimmed to a uniform intensity over almost the entire surface and diffused into a planar light beam. In addition, the advertising body 6A is caused to emit light.
The light diffusing material 5 is preferably formed by subjecting a tough synthetic resin film to fine prism processing.

  FIG. 3 is a cross-sectional explanatory view of the present invention. In the present invention, the light control for reflecting and diffusing the surface of the translucent plate 1 from the entire surface of the translucent plate 1 with a substantially uniform luminous intensity. After the coating layer 3 is formed, the reflective material 4 is disposed on the back side surface of the translucent plate 1, and the light control coating layer 3 of the translucent plate 1 is adjusted on the front surface, that is, the surface. Since it is advantageous in handling that the light diffusing material 5 that is dimmed by the light coating layer 3 to have a light intensity that is dimmed and reflected and diffused further into a planar light beam is advantageous in handling. In order to make the emitted light 2D of the LED light emitter 2A enter from one side edge, it is proposed to hold them all by the fitting 2 that can be fitted to the side edge.

  FIG. 4 is a view showing how the present invention is used. FIG. 4 shows a case where the present invention is used for an advertising billboard 6, and the advertising billboard 6 uses the present invention as a backlight at night. The advertising signboard 6 is made of a material excellent in weather resistance and toughness as well as translucency, that is, a plate material made of glass, acrylic resin, polycarbonate resin, polyester resin, or the like, with a catch phrase, design or color for advertisement. Or an advertising body 6A, which is a photograph of a natural landscape or night view, is installed on a pillar or wall surface of a transportation facility, or standing on a building rooftop or a suburban hill with a view, The white light 2D from the LED light emitter 2A disposed on the fitting 2 fitted on the two opposite side edges of the translucent plate 1 is allowed to enter the translucent plate 1 and then the reflective material 4 Reflective and translucent The light control coating layer 3 applied and printed on the surface of the material 1 is light-modulated and reflected and diffused over the entire surface, and is further diffused minutely and in many directions by the light diffusing material 5. The planar light beam is projected and the advertising body 6A is caused to emit light.

  It can be used practically by forming the entire advertising body of the signboard and the entire interior decoration board material so that they can emit light evenly at the required light intensity.

  It is a sketch of a translucent board | plate material.   It is explanatory drawing of a light control coating layer.   It is a cross-sectional explanatory drawing of this invention.   It is a use mode figure of the present invention.

DESCRIPTION OF SYMBOLS 1 Translucent board | plate material 1A Outer peripheral edge of translucent board | plate material 2 Insertion tool 2A LED light-emitting body 2B Light emission part 2C Base part 2D Emission light 3 Light control coating layer 3A The immediate vicinity part of outer periphery 3B A little isolation part 3C outer Separating part from the periphery 30 Light control coating agent 4 Reflecting material 5 Light diffusing material 6 Advertising signboard 6A Advertising body

Claims (2)

  On the two or four side edges facing the outer periphery of the translucent plate made of a translucent material with an appropriate area and thickness, LED light emitters with the required luminous intensity and white light are appropriately coordinated. In addition, a reflective material is disposed on the back side surface of the translucent plate, and the surface of the translucent plate is made of ink jet printing means, and the dots are made of translucent and quick-drying light diffusing adhesive resin. A light-emitting panel having a configuration in which a light-modulating coating layer that adjusts the light intensity to a uniform light intensity by changing the particle diameter and the density of coated dots is applied, and a diffusion material is disposed on the surface thereof. The light control coating layer is formed by using a light diffusion adhesive resin, the dot particle size is 1 to 12 μm, and the coating dot density is 250,000 to 10 million dots / cm ^2. The light emitting panel according to 1.

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