JP2009048939A - Surface light-emitting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thin-type, electric power-saving, light-weighted, and inexpensive surface light-emitting device by using a tabular light guide body and an LED. <P>SOLUTION: This is the surface light-emitting device (1) having the light guide body (10) having a front face, a rear face, and the end face, a groove part (11) installed at the front face or the rear face of the light guide body, light sources (30, 40) to make light incident from the end face of the light guide body, and an optical deflection means (R) installed in the groove part in order to emit the light made incident from the end face of the light guide body from the groove part of the light guide body. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a surface coloring device, and more particularly to a surface coloring device using a flat light guide.

  The beautiful and delicate single color expressive power extends to the aesthetics of color schemes. There is "color scheme".

The beauty of harmony can be achieved by the color of the shade, that is, the front and back of the kimono and the combination of the colors that appear in the layered clothing (in Takayoshi Kaneko's "Psychology of Color" book). As for the emotional value of color harmony, DBjudd American colorologist Judd published a paper published in the 1955 ISCC newsletter. "We often go to old recipes and prefer any change, while we often see a blend of colors that were originally indifferent," he said. The research of the predecessors is summarized into the following four elements.
1. The principle of order (order) Regularly chosen colors harmonize Principle of familiarity (kindness) The familiar colors in daily life must be harmonious and not too much. Principle of similarity (commonness) Any color will be in harmony if there is commonality. The principle of clarity The colors have an appropriate contrast. In other words, the two “familiar principles” and the “similarity principles” 3 represent important color schemes in Japan.

  In addition, ONRood1879 “Contemporary Colorology” American naturalist Ludo's theory of color harmony also has the principle of “the effect of the appearance of natural colors” derived from the observation of nature. There is a certain rule of how the observed color looks: the leaves of the trees and the leaves of the grass appear bright yellowish in the sunlight, dark blue in the shade, the sunlight of the red petals The part that looks bright and yellowish red, and the shaded part looks dark and blue (purple). ”This idea is considered as one of the important principles for the current color harmony theory.

  On the other hand, in a surface coloring device used for a backlight such as a liquid crystal display, surface emitting illumination is realized by diffusing light from a linear light source such as a neon tube using a flat light guide plate (for example, Patent Document 1).

  It is also known that a plurality of relatively inexpensive LEDs are arranged on a substrate at equal intervals and used as a surface emitting illumination device for directly illuminating a signboard or the like from the back side.

Japanese Patent Laid-Open No. 11-237629

  However, it has not been known to use a flat light guide to constitute a surface coloring device for use in decoration of a display or a wall surface in a building.

  Therefore, an object of the present invention is to provide a surface coloring device using a flat light guide.

  Furthermore, the present invention is not only a hue with a color scheme in the same color hue on a white background with a soft color, a light color, a slightly dark color, a dark color and a stepwise arrangement, and a coloring method of a blurring effect, The aim is to provide a device capable of color development that can express the ambiguous and subtle Japanese emotional seasonality with colors, including the commonality of tones (brightness and saturation).

  Furthermore, an object of the present invention is to provide a surface color developing device that develops a light, easy and ecological color using a flat light guide and an LED. Another object of the present invention is to provide a thin, power-saving, lightweight and inexpensive surface coloring device using a flat light guide and an LED.

  In order to solve the above problems, a surface coloring device according to the present invention includes a light guide having a front surface, a back surface, and an end surface, a groove provided on the front surface or the back surface of the light guide, and the end surface of the light guide. A light source for entering light and light deflecting means provided in the groove for emitting light incident from the end face of the light guide from the groove of the light guide.

  Further, in the surface color developing device according to the present invention, the groove portions are respectively disposed on the front surface and the back surface of the light guide, and the groove portions disposed on the front surface of the light guide and the groove portions disposed on the back surface of the light guide are, It is preferable that they are arranged substantially parallel to each other.

  Furthermore, in the surface color developing device according to the present invention, the groove portions are disposed on the front surface and the back surface of the light guide, respectively, and the groove portions disposed on the front surface of the light guide and the groove portions disposed on the back surface of the light guide. It is preferable that they are arranged so as to overlap each other at an angle.

  Furthermore, in the surface coloring apparatus according to the present invention, it is preferable that the front surface and the back surface are formed of a flat surface, a curved surface, or an uneven surface.

  Furthermore, in the surface coloring apparatus according to the present invention, the groove portion preferably has a substantially U-shaped cross section, a substantially V-shaped cross section, or a substantially U-shaped cross section.

  According to the present invention, surface coloring is performed from a flat light guide, so that it is possible to provide a surface coloring device that is thin, power-saving, lightweight, and inexpensive.

  In addition, according to the present invention, since light is colored from the surface of the roughened light guide as the light deflecting means, surface coloring that has emotional value that works on people and gives a psychological effect of comfort. It has become possible to provide devices and to develop light, gentle, and ecological colors.

  Furthermore, in the present invention, when the light deflecting means is present only on one side of the light guide, the light emitting portion is slightly different on the front and back surfaces of the light guide, so different patterns are used on the front and back surfaces. It became possible to enjoy. That is, when observed from the front surface side (the side where the grooves are formed), the light deflection means provided in the groove portion on the surface of the light guide emits light, but when observed from the back surface side, The part looks dark and the other part appears to emit light.

  Further, in the present invention, when there are light deflecting means on both surfaces of the light guide, for example, on the front surface side, there is no light deflecting means on the back surface from the portion between the light deflecting means on the front surface side and the light deflecting means. You will see a glimpse of the light emission. Furthermore, when the groove portion having the light deflecting means is arranged so as to overlap each other at an angle on the front surface side and the back surface side, it is possible to perform lattice pattern light emission.

  Hereinafter, a surface coloring apparatus according to the present invention will be described with reference to the drawings. However, it should be noted that the present invention is not limited to the following description and extends to the invention described in the claims and equivalents thereof.

  FIG. 1 is a front view of a panel-type double-side color developing device 1 in which the surface color developing device according to the present invention is configured as a wall-mounted panel, as viewed from the front side. FIG. 2 is a cross-sectional view taken along the line AA ′ in FIG. In the present embodiment, the panel type double-sided color developing device 1 is set to 500 × 500 mm. However, the size of the panel-type double-sided color developing device 1 is not limited to this, and can be formed in various sizes.

  As shown in FIGS. 1 and 2, the panel-type double-sided color developing device 1 includes a light guide 10, a frame 20, a first LED light source unit 30, a second LED light source unit 40, and the like. As shown in FIG. 1, the first and second LED light source units 30 and 40 are arranged so as to sandwich the light guide 10 from above and below in the drawing in FIG. 1, and are fixed in the frame body 20.

  In addition, you may arrange | position the protective plate which has translucency in the surface side (side which radiate | emits light in the arrow C direction) and back surface side (side which radiate | emits light in the arrow D direction) of the light guide 10. Further, in order to control the light from the front and back surfaces of the light guide 10, a diffusion sheet and a prism sheet may be arranged on the front and back surfaces of the light guide 10.

  Further, as shown in FIGS. 1 and 2, the panel type double-sided color developing device 1 is configured to emit light from both sides, but may be configured to emit light only from one surface side.

  FIG. 3 is a diagram showing an outline of the first LED light source unit 30.

  The first LED light source unit 30 includes a plurality of LEDs 31, a circuit board 32, a reflector unit 33, an electronic component 34 (see FIG. 2), and the like. A plurality of LEDs 31 are arranged at equal intervals on the circuit board 32, and each LED is individually covered with a reflector portion 33. Inside the reflector part 33, aluminum vapor deposition is made, and has a function to transmit the light from the LED 31 to the light guide 10 efficiently. In addition, the inside of the reflector part 33 may be mirror-finished or may be coated with white paint.

  Each LED 31 is a type of LED in which an R color LED element 35, a G color LED element 36, and a B color LED element 37 are packaged together, and can emit various types of light. Each LED 31 can be colored with an arbitrary color and timing by the control unit 38. Each LED 31 may be an R single color LED, a G single color LED, a B single color LED, or a W (white) single color LED. In addition to the above-described chip type, various LEDs such as an oval type and a bullet type can be used as the LED used for this.

  In addition, since the structure of the 2nd LED light source part 40 is also the same as that of the 1st LED light source part 30 mentioned above, the description is abbreviate | omitted here. Moreover, in the example of FIG.1 and FIG.2, although the 1st and 2nd LED light source parts 30 and 40 were arrange | positioned at the upper and lower sides of the light guide 10, when a light quantity is enough, an LED light source part is only one side. Can also be arranged.

  FIG. 4 is a diagram illustrating an example of the light guide 10.

  The light guide 10 is made of a flat-plate polycarbonate resin (hereinafter referred to as PC resin). However, the light guide 10 is made of PMMA resin, MS resin, polyester resin such as PET, PSt resin, COP resin, COC resin, olefin resin such as PP resin or PE resin, PVC resin, ionomer resin, glass, etc. May be.

  The light guide 10 had a horizontal width of 450 mm, a vertical width (a) of 450 mm, and a plate thickness (b) of 10 mm. The horizontal width and the vertical width of the light guide 10 are not limited to the above, and can be set freely. The plate thickness (b) is preferably 10 mm or less. This is because if it is thinner than 10 mm, it is excellent in terms of economy and light weight.

  In addition, the light guide 10 includes a first end surface 10a that faces the first LED light source unit 30, a second end surface 10b that faces the second LED light source unit 40, and a surface 10c that is disposed between each groove 11 described later. The rear surface 10d is a flat surface having no groove.

  A plurality of groove portions 11 having a substantially U-shaped cross section are provided on the surface side of the light guide 10 along the vertical direction in the drawing. The pitch (d) of the groove 11 was set to 10 mm, the width (e) of the groove 11 was set to 3 mm, and the depth (f) of the groove was set to 5 mm. However, the pitch (d), width (e), and depth (f) of the groove 11 are merely examples, and are not limited thereto. The width (e) of the groove 11 is preferably in the range of 0.5 to 5 mm. If it is narrower than 0.5 mm, the brightness of the groove portion becomes too high, and if it is wider than 5 mm, color mixing between the walls facing the groove hardly occurs, and the width of the smooth surface that becomes the shaded portion is relatively narrow. This is because it becomes difficult to express the shadow. Furthermore, the depth (f) of the groove 11 is preferably in the range of 1 to 8 mm. This is because if it is shallower than 1 mm, there is no stereoscopic effect, and if it is larger than 8 mm, it tends to break along the groove, and in that sense, the distance between the groove bottom and the back surface is preferably 2 mm or more. In addition, it is preferable that the width (g) of the surface 10c of the light guide 10 between the groove portions 11 is set to 3 to 8 times the width (e) of the groove portions 11. This is because if the width of 10c is too narrow, the number of coloring portions increases and shadows cannot be produced. Conversely, if the width is too wide, the number of coloring portions decreases and the effect of light becomes insufficient.

  Each groove 11 has a first color development surface 11a, a second color development surface 11b, and a third color development surface 11c. Light from the LED light source unit 30 and / or the LED light source unit 40 incident from the first end surface 10a and / or the second end surface 10b is applied to the first color developing surface 11a, the second color developing surface 11b, and the third color developing surface 11c. Light deflecting means R for emitting light to the outside of the panel type double-sided color developing device 1 is formed. The light deflection means R will be described later.

  The surface 10c of the light guide 10 is in a smooth form (smooth surface) so that light entering the light guide 10 is less diffused and deflected on these surfaces. In addition, the first end surface 10a and the second end surface 10b of the light guide 10 are subjected to a smoothing process so that light from the first and second LED light source units 30 and 40 can easily enter the light guide 10. It has been subjected.

  Hereinafter, the light deflection means R provided in the groove 11 will be described.

  The first color development surface 11a, the second color development surface 11b, and the third color development surface 11c of the groove 11 are subjected to a roughening process, and due to the fine uneven shape (light deflecting means R) generated by the roughening, Light entering from the first end faces 10a and 10b is scattered. The roughening treatment of the first coloring surface 11a, the second coloring surface 11b, and the third coloring surface 11c was performed by cutting the groove 11.

  As the light deflection means R, V-shaped grooves, U-shaped grooves, dot shapes (dot-shaped minute irregularities) stamped or printed by a laser, and inverted square pyramid-shaped concave portions are arranged. There may be. Further, the light deflecting means R may be a random unevenness obtained by etching using a solvent, plasma, electron irradiation or the like, an inverted V-shaped convex part, or an inverted U-shaped convex part.

  By the way, the roughening processing of the entire surface of the first coloring surface 11a, the second coloring surface 11b, and the third coloring surface 11c is performed by cutting, blasting, or surface processing by polishing equipment using an automatic cutter (for example, NC router). It can also be performed by embossing or the like.

  Further, in the blast processing, particles are ejected onto the surface of the light guide 10 with a high-speed ejector to form a random uneven shape, and the first coloring surface 11a, the second coloring surface 11b, and the third coloring surface 11c. It can be.

  Further, for example, a file is used as a polishing tool, and the surface of the light guide 10 is processed so as to scrape the surface, so that the first coloring surface 11a, the second coloring surface 11b, and the third coloring surface 11c can be obtained.

  Further, when the light guide 10 is manufactured by extrusion molding, the groove portion is formed by providing a random uneven shape on the mold itself or by passing between rolls for surface mat processing before cooling after molding. 11 and the first coloring surface 11a, the second coloring surface 11b, and the third coloring surface 11c of the groove portion 11 can be formed together. The surface on which the light deflection means R is provided can be provided not only on all three surfaces of the groove 11 but on only a part (for example, the bottom surface). Further, the surfaces other than the groove 11 of the light guide 10 are smooth surfaces in this embodiment, but the light deflecting means R may be provided on these surfaces.

  FIG. 5 is a perspective view showing the relationship between the light guide 10 and the first LED light source unit 30, and FIG. 6 is a cross-sectional view taken along the line BB ′ in FIG.

  As shown in FIGS. 5 and 6, the light guide 10 is arranged so that the groove portion 11 faces the surface side (the side that emits light in the direction of arrow C). In particular, in FIG. 6, the first color development surface 11a, the second color development surface 11b, and the third color development surface 11c of each light guide 10 are indicated by hatching. The size of the reflector portion 33 of the first LED light source portion 30 is configured corresponding to the size between the two groove portions.

  In FIG. 6, the position of each LED of the first LED light source unit 30 corresponding to the side surface of the light guide 10 is indicated by a dotted line. The position of the LED 31 may be closer to the surface side than the position shown in FIG. In the present embodiment, one LED 31 is disposed between the two groove portions 11, but the present invention is not limited to this, and two or more LEDs may be disposed between the two groove portions 11. You may comprise so that LED31 may be arrange | positioned every other between the two groove parts 11. FIG. Depending on the size of the groove 11, a part of the LED may be applied to the groove 11, but it does not depart from the spirit of the present invention as long as the light of the LED can enter the light guide 10. .

  Next, a coloring method in the double-sided coloring device 1 shown in FIGS. 1 to 6 will be described.

First, light emitted from each LED 31 of the first LED light source unit 30 enters the light guide 10 from the first end face 10 a of the light guide 10. Similarly, the light emitted from each LED 41 of the second LED light source unit 40 enters the light guide 10 from the second end face 10 b of the light guide 10. The light incident on the light guide 10 travels toward the LED light source unit disposed on the opposite side while being reflected by a smooth surface such as the front surface 10c and the back surface 10d of the light guide 10 (light L in FIG. 2). ₁ and L ₂ ). However, the light incident on the light guide 10 enters the light deflecting means provided on the first color developing surface 11a, the second color developing surface 11b and / or the third color developing surface 11c of the groove 11 and is scattered ( (Refer to the points P ₁ and P _{2 in} FIG. 2 scattered by the second coloring surface 11b). A predetermined amount of the scattered light is emitted from the front surface side (side emitting light in the direction of arrow C) and the back surface side (direction emitting light in the direction of arrow D).

  FIG. 7 is a diagram for explaining the color development of the light guide 10.

  As shown in FIG. 7, it is assumed that R color light is emitted from all the LEDs of the first LED light source unit 30 and the second LED light source unit 40. As described above, on the surface side of the light guide 10, the plurality of grooves 11 having the first color developing surface 11a, the second color developing surface 11b, and the third color developing surface 11c, and the surface 10c are provided. Accordingly, light is directly scattered and emitted from the light deflecting means R of the first color developing surface 11a, the second color developing surface 11b, and the third color developing surface 11c of the groove portion 11, but the surface 10c (smooth surface) has no light. Since the deflecting means R is not provided, the surface 10c (smooth surface) looks darker than the groove 11 although it is a similar color. Therefore, bright and dark stripes can be expressed on the surface side. Further, since the plurality of groove portions 11 are provided on the front surface side, depending on the viewing angle, the widths of the bright and dark stripes are observed differently, so that it is possible to produce a stereoscopic effect.

  On the contrary, when observed from the back side, the portions of the light deflecting means R provided on the first coloring surface 11a, the second coloring surface 11b, and the third coloring surface 11c appear as shadows, and other portions appear to emit light.

  Thus, in the light guide 10, when observed from the front surface side (the side that emits light in the direction of arrow C) of the light guide 10, and from the back surface side (the side that emits light in the direction of arrow D). Since the light emission part is slightly different depending on the observation, it is possible to enjoy different patterns on the front and back sides.

  FIG. 8 is a diagram showing an example of another light guide.

  8A is a cross-sectional view of the light guide 100, and FIG. 8B is a diagram showing the relationship between the light guide 100 and the first LED light source unit 30. As shown in FIG. A light guide 100 shown in FIG. 8 can be used in the panel-type double-sided color developing device 1 instead of the light guide 10 described above.

  As shown in FIG. 8, the light guide 100 is configured such that a plurality of groove portions 101 having a substantially V-shaped cross section are arranged on the surface side (side emitting light in the direction of arrow C). . The first color development surface 101a and the second color development surface 101b of the groove portion 101 are provided with light deflection means R. In the drawing, the surface on which the light deflection means R is provided is indicated by oblique lines. The light deflection means R provided in the light guide 100 is the same as that provided in the panel-type double-sided color developing device 1 described above. Moreover, although the position of each LED31 of the 1st LED light source part 30 was shown with the dotted line in the figure, it may exist in the place closer to the surface 100C.

  The light guide 100 includes a first end surface 100a facing the first LED light source unit 30, a second end surface 100b facing the second LED light source unit 40, a plurality of surfaces 100c disposed between the groove portions 101, and a groove portion. It has a back surface 100d that is a flat surface.

  Light incident from the first LED light source unit 30 and the second LED light source unit 40 is directly scattered from the light deflecting means R of the first color development surface 101a and the second color development surface 101b of the groove 101 and emitted. However, since the light deflection means R is not provided on the surface 100 c (smooth surface), the surface 100 c (smooth surface) looks darker than the groove 101. Therefore, bright and dark stripes can be expressed on the surface side. Further, since the plurality of groove portions 101 are provided on the front surface side, depending on the viewing angle, the widths of the bright and dark stripes are observed differently, so that it is possible to produce a stereoscopic effect. On the other hand, when observed from the back side (the side emitting light in the direction of arrow D), the portions of the light deflecting means R provided on the first coloring surface 101a and the second coloring surface 101b appear dark, and other portions. Appears to emit light.

  Thus, in the light guide 100, when observed from the front surface side (side emitting light in the direction of arrow C) and from the back surface side (side emitting light in the direction of arrow D). Because the light emission part is slightly different depending on the observation, it is possible to enjoy different patterns on the front and back sides.

  FIG. 9 is a diagram showing another example of the light guide.

  9A is a cross-sectional view of the light guide 110, and FIG. 9B is a view showing the relationship between the light guide 110 and the first LED light source unit 30. FIG. The light guide 110 shown in FIG. 9 can be used in the panel-type double-sided color developing device 1 instead of the light guide 10 described above.

  As shown in FIG. 9, the light guide 110 is configured such that a plurality of grooves 111 having a substantially U-shaped cross section are arranged on the surface side (the side that emits light in the direction of arrow C). Yes. The curved surface 111a of the groove 111 is provided with light deflecting means R. In the drawing, the surface on which the light deflecting means R is provided is indicated by oblique lines. The light deflection means R provided in the light guide 110 is the same as that provided in the panel-type double-side color developing device 1 described above. Moreover, although the position of each LED31 of the 1st LED light source part 30 was shown by the dotted line in the figure, you may exist in the place nearer to the surface side (C direction).

  The light guide 110 includes a first end surface 110a that faces the first LED light source unit 30, a second end surface 110b that faces the second LED light source unit 40, a plurality of surfaces 110c disposed between the groove portions 111, and a groove portion. It has a back surface 110d that is a flat surface.

  The light incident from all the LEDs of the first LED light source unit 30 and the second LED light source unit 40 is directly scattered from the light deflecting means R on the curved surface 111a of the groove 111, and is emitted. Since the light deflection means R is not provided on 110 c (smooth surface), the surface 110 c (smooth surface) looks darker than the groove 111. Therefore, bright and dark stripes can be expressed on the surface side. In addition, since the plurality of groove portions 111 are provided on the front surface side, depending on the viewing angle, the widths of the bright and dark stripes are observed differently, so that it is possible to produce a stereoscopic effect. Conversely, when observed from the back side (side emitting light in the direction of arrow D), the portion of the light deflection means R provided on the curved surface 111a appears dark and the other portions appear to emit light.

  Thus, in the light guide 110, when observed from the front surface side (side emitting light in the direction of arrow C) and from the back surface side (side emitting light in the direction of arrow D). Because the light emission part is slightly different depending on the observation, it is possible to enjoy different patterns on the front and back sides.

  FIG. 10 shows still another example of the light guide.

  FIG. 10A shows a cross-sectional view of the light guide 120, and FIG. 10B shows the relationship between the light guide 120 and the first LED light source section 30. FIG. A light guide 120 shown in FIG. 10 can be used in the panel-type double-sided color developing device 1 instead of the light guide 10 described above.

  As shown in FIG. 10, the light guide 120 is configured such that a plurality of grooves 121 having a substantially U-shaped cross section are arranged on the surface side (the side that emits light in the direction of arrow C). ing. Light deflecting means R is provided on the first coloring surface 121a, the second coloring surface 121b, and the third coloring surface 121c of the groove 121. In addition, the light guide 120 is configured such that a plurality of groove portions 122 having a substantially U-shaped cross section are arranged on the back surface side (side emitting light in the direction of arrow D). The front surface side groove portion 121 and the back surface side groove portion 122 are arranged to be substantially parallel to each other.

  Light deflecting means R is provided on the first coloring surface 122a, the second coloring surface 122b, and the third coloring surface 122c of the groove 122. In the figure, the surface on which the light deflection means R is provided is indicated by oblique lines. The light deflection means R provided in the light guide 120 is the same as that provided in the panel-type double-side color developing device 1 described above. Moreover, although the position of each LED31 of the 1st LED light source part 30 was shown with the dotted line in the figure, it may exist in the position close | similar to either the 120C side or the 120D side.

  The light guide 120 includes a first end surface 120 a facing the first LED light source unit 30, a second end surface 120 b facing the second LED light source unit 40, a plurality of surfaces 120 c disposed between the groove portions 121, and a groove portion 122. It has a plurality of back surfaces 120d arranged therebetween.

  The light incident from the first LED light source unit 30 and the second LED light source unit 40 is directly emitted from the light deflecting means R of the plurality of groove portions 121 provided on the front surface side and the plurality of groove portions 122 provided on the back surface side. Although the light is scattered and emitted, it looks bright, but since the light deflection means R is not provided on the front surface 120c (smooth surface) and the back surface 120d (smooth surface), the front surface 120c (smooth surface) and the back surface 120d (smooth) The surface) appears darker than the grooves 121 and 122. Therefore, bright and dark stripes can be expressed on the front side and the back side. In addition, since the plurality of groove portions 121 and 122 are provided on the front surface side and the back surface side, depending on the viewing angle, the width of the light and dark stripes is observed differently, so that a three-dimensional effect can be performed. It becomes possible.

  FIG. 11 is a diagram showing another example of the light guide.

  FIG. 11A is a cross-sectional view of the light guide 130, and FIG. 11B is a diagram showing the relationship between the light guide 130 and the first LED light source unit 30. A light guide 130 shown in FIG. 11 can be used in the panel-type double-sided color developing device 1 instead of the light guide 10 described above.

  As shown in FIG. 11, the light guide 130 is configured such that a plurality of grooves 131 having a substantially V-shaped cross section are arranged on the surface side (the side that emits light in the direction of arrow C). Yes. The light guide 130 is configured such that a plurality of groove portions 132 having a substantially V-shaped cross section are arranged on the back surface side (side emitting light in the direction of arrow D). The front surface side groove portion 131 and the back surface side groove portion 132 are arranged so as to be substantially parallel to each other.

  Light deflecting means R is provided on the first coloring surface 131a and the second coloring surface 131b of the groove 131. Further, the light deflecting means R is also provided on the first coloring surface 132a and the second coloring surface 132b of the groove portion 132. In the figure, the surface on which the light deflection means R is provided is indicated by oblique lines. The light deflection means R provided in the light guide 130 is the same as that provided in the panel-type double-sided color developing device 1 described above. Moreover, although the position of each LED31 of the 1st LED light source part 30 was shown by the dotted line in the figure, it may exist in the position close | similar to either the 130C side or the 130D side.

  The light guide 130 includes a first end surface 130 a that faces the first LED light source unit 30, a second end surface 130 b that faces the second LED light source unit 40, a plurality of surfaces 130 c disposed between the groove portions 131, and a groove portion 132. It has a plurality of back surfaces 130d arranged therebetween.

  The light incident from the first LED light source unit 30 and the second LED light source unit 40 is directly emitted from the light deflection means R of the plurality of groove portions 131 provided on the front surface side and the plurality of groove portions 132 provided on the back surface side. Although the light is scattered and emitted, it looks bright, but since the light deflection means R is not provided on the front surface 130c (smooth surface) and the back surface 130d (smooth surface), the front surface 130c (smooth surface) and the back surface 130d (smooth) Surface) looks darker than the grooves 131 and 132. Therefore, bright and dark stripes can be expressed on the front side and the back side. In addition, since the plurality of grooves 131 and 132 are provided on the front side and the back side, depending on the viewing angle, the width of the light and dark stripes are observed differently, so that a three-dimensional effect can be performed. It becomes possible.

  FIG. 12 is a diagram showing another example of the light guide.

  FIG. 12A shows a cross-sectional view of the light guide 140, and FIG. 12B shows the relationship between the light guide 140 and the first LED light source unit 30. FIG. A light guide 140 shown in FIG. 12 can be used in the panel-type double-sided color developing device 1 instead of the light guide 10 described above.

  As shown in FIG. 12, the light guide 140 is configured such that a plurality of grooves 141 having a substantially U-shaped cross section are arranged on the surface side (the side that emits light in the direction of arrow C). Yes. In addition, the light guide 140 is configured such that a plurality of groove portions 142 having a U-shaped cross section are arranged on the back surface side (side emitting light in the direction of arrow D). The front surface side groove portion 141 and the back surface side groove portion 142 are arranged to be substantially parallel to each other.

  The light deflection means R is provided on the curved surface 141 a of the groove 141. Further, the light deflecting means R is also provided on the curved surface 142 a of the groove 142. In the figure, the surface on which the light deflection means R is provided is indicated by oblique lines. The light deflection means R provided in the light guide 140 is the same as that provided in the panel-type double-sided color developing device 1 described above. Moreover, although the position of each LED31 of the 1st LED light source part 30 was shown by the dotted line in the figure, it may exist in the position close | similar to either the 140C side or the 140D side.

  The light guide 140 includes a first end surface 140 a that faces the first LED light source unit 30, a second end surface 140 b that faces the second LED light source unit 40, a plurality of surfaces 140 c disposed between the groove portions 141, and a groove portion 142. It has a plurality of back surfaces 140d arranged therebetween.

  The light incident from the first LED light source unit 30 and the second LED light source unit 40 is directly emitted from the light deflecting means R of the plurality of groove portions 141 provided on the front surface side and the plurality of groove portions 142 provided on the back surface side. Since the light is scattered and emitted, it looks bright, but since the light deflection means R is not provided on the front surface 140c (smooth surface) and the back surface 140d (smooth surface), the front surface 140c (smooth surface) and the back surface 140d (smooth surface) Surface) appears darker than the grooves 141 and 142. Therefore, bright and dark stripes can be expressed on the front side and the back side. In addition, since a plurality of groove portions 141 and 142 are provided on the front surface side and the back surface side, depending on the viewing angle, the widths of the light and dark stripes are observed differently, so that a three-dimensional effect can be performed. It becomes possible.

  FIG. 13 is a diagram showing an example of another light guide.

  FIG. 13A shows a cross-sectional view of the light guide 150, and FIG. 13B shows the relationship between the light guide 150 and the first LED light source section 30. FIG. A light guide 150 shown in FIG. 13 can be used in the panel-type double-sided color developing device 1 instead of the light guide 10 described above.

  As shown in FIG. 13, the light guide 150 is configured such that a plurality of grooves 151 having a substantially U-shaped cross section are arranged on the surface side (the side that emits light in the direction of arrow C). Yes. The first color development surface 151a, the second light emitting surface 151b, and the third color development surface 151c of the groove 151 are provided with light deflection means R. In the figure, the surface on which the light deflection means R is provided is indicated by oblique lines. Yes. The light deflection means R provided in the light guide 150 is the same as that provided in the panel-type double-sided color developing device 1 described above. Moreover, although the position of each LED31 of the 1st LED light source part 30 was shown by the dotted line in the figure, it may exist in the place nearer to the surface side.

  The light guide 150 includes a first end surface 150a facing the first LED light source unit 30, a second end surface 150b facing the second LED light source unit 40, a plurality of surfaces 150c disposed between the groove portions 151, and a groove portion. It has a back surface 150d which is a flat surface.

  The light incident from the first LED light source unit 30 and the second LED light source unit 40 is directly emitted from the light deflecting means R of the first coloring surface 151a, the second light emitting surface 151b, and the third coloring surface 151c of the groove 151. However, since the light deflecting means R is not provided on the surface 150c (smooth surface), the surface 150c (smooth surface) looks darker than the groove 151. Therefore, bright and dark stripes can be expressed on the surface side. Further, since the plurality of groove portions 151 are provided on the front surface side, depending on the viewing angle, the width of the bright and dark stripes is observed differently, so that it is possible to produce a stereoscopic effect. On the contrary, if observed from the back side (the side that emits light in the direction of arrow D), the portions of the light deflecting means R provided on the first color development surfaces 151a and 151b and the second color development surface 151c become shadows, and so on. The part of appears to emit light.

  Thus, in the light guide 150, when observed from the front surface side (side emitting light in the direction of arrow C) and from the back surface side (side emitting light in the direction of arrow D). Because the light emission part is slightly different depending on the observation, it is possible to enjoy different patterns on the front and back sides.

  The light guide 150 shown in FIG. 13 is configured such that the pitch of the groove 11 of the light guide 10 described above is randomly arranged. As described above, it is preferable to increase the pitch of the groove portions 11 at an appropriate interval from the viewpoint that a shadow can be displayed relatively large. In FIG. 13, the pitch of the groove portions 11 of the light guide 10 is configured to be randomly arranged. However, in the light guides 100 to 140 shown in FIGS. You may comprise so that a pitch may be arrange | positioned at random.

  FIG. 14 is a diagram showing still another example of the light guide.

  The light guide may have a curved surface 160c and a flat back surface 160d as shown in FIG. 14 (a), and may have relatively large irregularities on the surface 170c as shown in FIG. 14 (b). As shown in FIG. 14 (c), the front surface 180c and the back surface 180d are parallel but may be greatly waved, and as shown in FIG. 14 (d), the ends are generally smooth but bent at the ends. It may be configured.

  In FIGS. 14A to 14D, each of the grooves 161, 171, 181, and 191 has a U-shape. However, as described above, the grooves are V-shaped (see FIG. 8). ) Or U-shape (see FIG. 11). 14 (a) to 14 (d), grooves 161, 171, 181 and 191 are provided only on the front surface. However, a U-shape, V-shape or U-shape is provided on both the front and back surfaces. A groove may be provided. Further, in FIGS. 14A to 14D, the grooves 161, 171, 181 and 191 are provided at equal intervals. However, as shown in FIG. 13, the intervals between the grooves may be random.

  FIG. 15 is a front view of the panel-type double-side color developing device 2 configured as a wall-hanging panel according to the present invention as viewed from the front side. In the present embodiment, the panel-type double-side color developing device 2 is set to 500 × 500 mm. However, the size of the panel-type double-side color developing device 2 is not limited to this, and can be formed in various sizes.

  The panel-type double-sided color developing device 2 includes a light guide 200, a frame 22, a first LED light source unit 30, a second LED light source unit 40, a third LED light source unit 50, a fourth LED light source unit 60, and the like. It is configured. As shown in FIG. 15, the first and second LED light source units 30 and 40 are arranged so as to sandwich the light guide 200 from above and below in the drawing in FIG. 15, and are fixed in the frame body 22. Further, the third and fourth LED light source units 50 and 60 are arranged so as to sandwich the light guide 200 from the left and right in the drawing in FIG. 15 and are fixed in the frame body 22. Since the 3rd and 4th LED light source parts 50 and 60 are the same as that of the 1st LED light source part 30 shown in FIG. 3, description is abbreviate | omitted.

  In addition, you may arrange | position the protective plate which has translucency in the surface side and back surface side of the light guide 200. FIG. Further, in order to control light from the front and back surfaces of the light guide 200, a diffusion sheet and a prism sheet may be arranged on the front and back sides of the light guide 200. Further, the panel type double-sided color developing device 2 is configured to emit light from both sides, but may be configured to emit light only from one side.

  FIG. 15 is a front view of the panel-type double-side color developing device 2 configured as a wall-hanging panel according to the present invention as viewed from the front side. In the present embodiment, the panel-type double-side color developing device 2 is set to 500 × 500 mm. However, the size of the panel-type double-side color developing device 2 is not limited to this, and can be formed in various sizes.

  The panel-type double-sided color developing device 2 includes a light guide 200, a frame 22, a first LED light source unit 30, a second LED light source unit 40, a third LED light source unit 50, a fourth LED light source unit 60, and the like. It is configured. As shown in FIG. 15, the first and second LED light source units 30 and 40 are arranged so as to sandwich the light guide 200 from above and below in the drawing in FIG. 15, and are fixed in the frame body 22. Further, the third and fourth LED light source units 50 and 60 are arranged so as to sandwich the light guide 200 from the left and right in the drawing in FIG. 15 and are fixed in the frame body 22. Since the 3rd and 4th LED light source parts 50 and 60 are the same as that of the 1st LED light source part 30 shown in FIG. 3, description is abbreviate | omitted.

  In addition, you may arrange | position the protective plate which has translucency in the surface side and back surface side of the light guide 200. FIG. Further, in order to control light from the front and back surfaces of the light guide 200, a diffusion sheet and a prism sheet may be arranged on the front and back sides of the light guide 200. Further, the panel type double-sided color developing device 2 is configured to emit light from both sides, but may be configured to emit light only from one side.

  FIG. 16 is a diagram illustrating an example of the light guide 200.

  FIG. 16A shows a cross-sectional view of the light guide 200, and FIG. 16B shows the relationship between the light guide 200 and the first LED light source unit 30 and the fourth LED light source unit 60. FIG.

  As shown in FIG. 16, the light guide 200 is configured such that a plurality of grooves 201 having a substantially U-shaped cross section are arranged on the surface side (the side that emits light in the direction of arrow C). ing. The light guide 200 is also configured such that a plurality of groove portions 202 having a substantially U-shaped cross section are arranged on the back surface side (side emitting light in the direction of arrow D). Furthermore, the groove part 201 and the groove part 202 are arrange | positioned so that it may mutually overlap at an angle (approximately 90 degrees). In addition, the angle at which the groove part 201 and the groove part 202 overlap is not limited to the present embodiment, and is preferably 30 to 150 ° (90 ± 60 °), for example, when expressing an image of a mesh such as a bamboo work or a colander, 60 to 120 ° (90 ± 30 °) is more preferable. For example, when expressing a mesh image such as tatami or goza, it is more effective to arrange the overlapping angles at about 10 ° or 170 °. Moreover, the position of each LED31 of the 1st LED light source part 30 was shown with the dotted line in the figure.

  Light deflecting means R is provided on the first coloring surface 201a, the second coloring surface 201b, and the third coloring surface 201c of the groove 201. Further, the light deflecting means R is also provided on the first coloring surface 202a, the second coloring surface 202b, and the third coloring surface 202c of the groove 202. In the figure, the surface on which the light deflection means R is provided is indicated by oblique lines. The light deflection means R provided in the light guide 200 is the same as that provided in the panel-type double-side color developing device 1 described above.

  The light guide 200 includes a first end surface 200 a that faces the first LED light source unit 30, a second end surface 200 b that faces the second LED light source unit 40, and a third end surface 200 c that faces the third LED light source unit 50. The second end surface 200d facing the fourth LED light source unit 60, the plurality of front surfaces 200e disposed between the groove portions 201, and the plurality of back surfaces 200f disposed between the groove portions 202 are provided.

  The light incident from the first LED light source unit 30 to the fourth LED light source unit 60 is directly emitted from the light deflecting means R of the plurality of groove portions 201 provided on the front surface side and the plurality of groove portions 202 provided on the back surface side. Although the light is scattered and emitted, it looks bright, but since the light deflection means R is not provided on the front surface 200e (smooth surface) and the back surface 200f (smooth surface), the front surface 200e (smooth surface) and the back surface 200f (smooth surface). The surface) appears darker than the grooves 201 and 202. Further, the grooves 201 and 202 are arranged so as to overlap each other at an angle (approximately 90 °). Therefore, bright and dark lattice patterns can be expressed on the front side and the back side. In addition, since a plurality of groove portions 201 and 202 are provided on the front surface side and the back surface side, depending on the viewing angle, the width of the light and dark stripes is observed differently, so that a three-dimensional effect can be performed. It becomes possible.

  FIG. 17 is a diagram illustrating an example of another light guide.

  17A shows a cross-sectional view of the light guide 210, and FIG. 17B shows a relationship between the light guide 210 and the first LED light source unit 30 and the fourth LED light source 60. It is. A light guide 210 shown in FIG. 17 can be used in the panel-type double-sided coloring device 2 instead of the light guide 200 described above.

  As shown in FIG. 17, the light guide 210 is configured such that a plurality of groove portions 211 having a V-shaped cross section are arranged on the surface side (the side that emits light in the direction of arrow C). . In addition, the light guide 210 is configured such that a plurality of groove portions 212 having a V-shaped cross section are arranged on the back surface side (side emitting light in the direction of arrow D). Furthermore, the groove part 211 and the groove part 212 are arranged so as to overlap each other at an angle (approximately 90 °). In addition, the position of each LED31 of the 1st LED light source part 30 was shown by the dotted line in the figure.

  Light deflecting means R is provided on the first coloring surface 211a and the second coloring surface 211b of the groove 211. Further, the light deflecting means R is also provided on the first coloring surface 212a and the second coloring surface 212b of the groove 212. In the figure, the surface on which the light deflection means R is provided is indicated by oblique lines. The light deflection means R provided in the light guide 210 is the same as that provided in the panel-type double-side color developing device 1 described above.

  The light guide 210 includes a first end surface 210 a that faces the first LED light source unit 30, a second end surface 210 b that faces the second LED light source unit 40, and a third end surface 210 c that faces the third LED light source unit 50. The second end face 210d facing the fourth LED light source unit 60, the plurality of front surfaces 210e disposed between the groove portions 211, and the plurality of back surfaces 210f disposed between the groove portions 212.

  The light incident from the first LED light source unit 30 to the fourth LED light source unit 60 is directly emitted from the light deflecting means R of the plurality of grooves 211 provided on the front surface side and the plurality of grooves 212 provided on the back surface side. Although the light is scattered and appears bright, the surface 210e (smooth surface) and the back surface 210f (smooth surface) are not provided with the light deflection means R, so the front surface 210e (smooth surface) and the back surface 210f (smooth) Surface) looks darker than the grooves 211 and 212. Further, the grooves 211 and 212 are arranged so as to overlap each other at an angle (approximately 90 °). Therefore, bright and dark lattice patterns can be expressed on the front side and the back side. In addition, since the plurality of grooves 211 and 212 are provided on the front side and the back side, depending on the viewing angle, the widths of the bright and dark stripes are observed differently, so that a three-dimensional effect can be performed. It becomes possible.

  FIG. 18 shows still another example of the light guide.

  18A shows a cross-sectional view of the light guide 220, and FIG. 18B shows a relationship between the light guide 220 and the first LED light source unit 30 and the fourth LED light source 60. It is. A light guide 220 shown in FIG. 18 can be used in the panel-type double-sided color developing device 2 instead of the light guide 200 described above.

  As shown in FIG. 18, the light guide 220 is configured such that a plurality of groove portions 221 having a U-shaped cross section are arranged on the surface side (the side that emits light in the direction of arrow C). . In addition, the light guide 220 is configured such that a plurality of groove portions 222 having a U-shaped cross section are also arranged on the back surface side (side emitting light in the direction of arrow D). Further, the groove part 221 and the groove part 222 are arranged so as to overlap each other at an angle (approximately 90 °). In addition, the position of each LED31 of the 1st LED light source part 30 was shown by the dotted line in the figure.

  The light deflection means R is provided on the curved surface 221 a of the groove portion 221. Further, the light deflection means R is also provided on the curved surface 222 a of the groove 222. In the figure, the surface on which the light deflection means R is provided is indicated by oblique lines. The light deflection means R provided in the light guide 220 is the same as that provided in the panel-type double-side color developing device 1 described above.

  The light guide 220 includes a first end surface 220 a that faces the first LED light source unit 30, a second end surface 220 b that faces the second LED light source unit 40, and a third end surface 220 c that faces the third LED light source unit 50. The second end face 220d facing the fourth LED light source unit 60, the plurality of front surfaces 220e disposed between the groove portions 221, and the plurality of back surfaces 220f disposed between the groove portions 222 are provided.

  Light incident from the first LED light source unit 30 to the fourth LED light source unit 60 is directly emitted from the light deflecting means R of the plurality of groove portions 221 provided on the front surface side and the plurality of groove portions 222 provided on the back surface side. Although the light is scattered and appears bright, it appears bright, but since the light deflecting means R is not provided on the front surface 220e (smooth surface) and the back surface 220f (smooth surface), the front surface 220e (smooth surface) and the back surface 220f (smooth surface). Surface) looks darker than the grooves 221 and 222. Further, the grooves 221 and 222 are arranged so as to overlap each other at an angle (approximately 90 °). Therefore, bright and dark lattice patterns can be expressed on the front side and the back side. In addition, since the plurality of groove portions 221 and 222 are provided on the front surface side and the back surface side, depending on the viewing angle, the widths of the light and dark stripes are observed differently, so that a three-dimensional effect can be performed. It becomes possible.

  As described above, the double-sided color developing device according to the present invention has been described using a wall-mounted panel type. However, the double-sided color developing device according to the present invention takes advantage of the light weight and simple configuration, and other than the panel type. It can be used as many indoor and outdoor lighting fixtures and building materials.

  When the double-sided color developing device according to the present invention is used, it is possible to perform striped surface color development by developing colors with different colors for each LED. Therefore, the viewing direction is ordered by stripes of color spaces formed at equal intervals. Can satisfy the “order principle” in which the stripe width can be varied, or the colors chosen by simple geometric relationships are in harmony. In addition, the color of each light guide is colored with a striped color to express the colors of natural environments and their changes that are usually familiar to conform to the “Principles of intimacy”. Can be made more prominent.

It is the front view seen from the color development side of the panel type double-sided color development device concerning the present invention. It is AA 'sectional drawing shown in FIG. It is a figure which shows schematic structure of an LED light source part. It is a figure which shows an example of a light guide. It is a perspective view which shows the relationship between a light guide and a light source part. It is BB 'sectional drawing in FIG. It is a figure for demonstrating the color development of a light guide. It is a figure which shows the example of another light guide. It is a figure which shows the example of another light guide. It is a figure which shows the example of another light guide. It is a figure which shows the example of another light guide. It is a figure which shows the example of another light guide. It is a figure which shows the example of another light guide. It is a figure which shows the example of another light guide. It is the front view seen from the color development side of the other panel type double-sided color development device concerning the present invention. It is a figure which shows an example of a light guide. It is a figure which shows the example of another light guide. It is a figure which shows the example of another light guide.

Explanation of symbols

1, 2, Wall-mounted panel surface coloring device 10, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220 Light guide 11, 101, 111, 121, 122, 131 , 132, 141, 142, 151, 161, 171, 181, 191, 201, 202, 211, 212, 221, 222 Groove 20, 22 Frame 30 First LED light source 40 40 Second LED light source 50 3 LED light source part 60 4th LED light source part R Light deflecting means

Claims (6)

A surface coloring device,
A light guide having a front surface, a back surface and an end surface;
A groove provided on the front or back surface of the light guide;
A light source for entering light from the end face of the light guide;
Light deflecting means provided in the groove for causing light incident from the end face of the light guide to exit from the groove of the light guide;
A surface coloring device comprising:   The groove portions are respectively disposed on the front surface and the back surface of the light guide, and the groove portions disposed on the front surface of the light guide and the groove portions disposed on the back surface of the light guide are disposed substantially parallel to each other. The surface coloring device according to claim 1, wherein   The groove portions are respectively disposed on the front surface and the back surface of the light guide, and the groove portions disposed on the front surface of the light guide and the groove portions disposed on the back surface of the light guide overlap each other at an angle. The surface coloring device according to claim 1, wherein the surface coloring device is disposed on the surface.   The surface coloring apparatus according to any one of claims 1 to 3, wherein the front surface and the back surface are configured by a flat surface, a curved surface, or an uneven surface.   The surface coloring apparatus according to claim 4, wherein the front surface and the back surface are arranged in parallel to each other.   The surface coloring device according to claim 1, wherein the groove portion has a substantially U-shaped cross section, a substantially V-shaped cross section, or a substantially U-shaped cross section.

Images