Lighting device, object to be illuminated, and method for manufacturing object to be illuminated

Abstract

To materialize a picture, etc., capable of expressing even a landscape including fine gradations, stably with a high level of reproducibility.SOLUTION: There is provided a lighting device for illuminating the object to be illuminated having a diagram including an image and / or text on the surface. The lighting device comprises: a first illuminating lamp capable of irradiating the object to be illuminated with visible light; a second illuminating lamp capable of illuminating the object to be illuminated with ultraviolet light; and illuminating lamp control means capable of controlling the first and second illuminating lamps. The object to be illuminated includes a substrate, a first diagram layer having a first diagram formed on the substrate, and a second diagram layer having a second diagram. The first diagram is visually recognizable under visible light, the second diagram layer includes an ultraviolet light-excited luminescent substance that emits visible light upon irradiation with ultraviolet light, and the second diagram is visually recognizable under ultraviolet light. The ultraviolet light-excited luminescent substance of the second diagram layer contains a pigment, and the second diagram layer has a pigment spraying mark.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an illumination device, an illuminated object, and a method for manufacturing an illuminated object.

Background Art

[0002] There has been disclosed a technique related to an illumination device for illuminating, for example, a drawing that simultaneously represents a daytime scene and a nighttime scene using a special paint that emits or reflects light by ultraviolet rays, and an illumination device that can meet the demands of viewers who want to enjoy viewing a drawing or the like with music in a richly immersive manner (Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] With the conventional illumination device, it has become possible to enjoy viewing a drawing or the like with music in a richly immersive manner. However, expressing a landscape including delicate gradations has only been possible to be accidentally produced by trial and error.

[0005] The present invention has been made in view of such a situation, and an object thereof is to stably and highly reproducibly realize a drawing or the like that can express a landscape including delicate gradations by a method supported by technical knowledge.

Means for Solving the Problems

[0006] In order to achieve the above object, one aspect of the present invention is an illumination device for illuminating an illuminated object having a figure including an image and / or characters on a surface, including: a first illumination lamp capable of irradiating the illuminated object with visible light; a second illumination lamp capable of irradiating the illuminated object with ultraviolet light; and an illumination lamp control unit capable of controlling the first illumination lamp and the second illumination lamp. The illuminated object includes a base material, a first figure layer having a first figure formed on the base material, and a second figure layer formed on a side of the first figure layer opposite to the base material and having a second figure. The first figure is visible under visible light, the second figure layer has an ultraviolet-excited luminescent material that emits visible light based on irradiation with ultraviolet light, the second figure is visible under ultraviolet light, the second figure includes a specific figure, the ultraviolet-excited luminescent material of the second figure layer corresponding to the specific figure includes a pigment, and the second figure layer corresponding to the specific figure has a pigment spray mark.

Advantages of the Invention

[0007] According to the present invention, a drawing or the like capable of expressing a landscape including delicate gradations can be reproduced with high reproducibility and stability by a method supported by technical knowledge.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0009] <Summary> Hereinafter, embodiments will be described with reference to the drawings as appropriate. In this embodiment, an example of an illumination device that illuminates a drawing on which a still image is drawn will be described. The illumination device irradiates the drawing with visible light and ultraviolet light as appropriate. The drawing has two or more layers in which a drawing visible under visible light overlaps with a drawing that is not visible under visible light but is visible only under ultraviolet light. Pigments that are excited by ultraviolet light and emit visible light are located in the drawing portions that are visible only under ultraviolet light. For example, the drawing visible under visible light is an oil painting. For example, as a drawing that is visible only under ultraviolet light, pigments are sprayed on the oil painting. First, the illumination device irradiates visible light, and based on the reflected light of the drawing, the first drawing (for example, a daytime landscape) is visually recognized. Then, the illumination device irradiates so as to lower the illuminance of visible light and increase the illuminance of ultraviolet light. As a result, the pigments emit visible light, and the second drawing (for example, a nighttime landscape) is visually recognized. Here, the density of the pigments gradually changes within the plane of the drawing. As a result, a display with gradation is realized within the plane of the drawing. For example, in a drawing of Mount Fuji, by appropriately irradiating visible light and ultraviolet light, white clouds flutter during the day, and a sunset that gradually changes from yellow-orange to red appears in the evening.

[0010] <Overall Configuration of Illumination System> FIG. 1 is a schematic diagram showing the overall configuration of an illumination system 100. The illumination system 100 includes an information processing device 1, an illumination device 2, an acoustic device 3, a communication device 4, and an illuminated object 5. In FIG. 1, the arrow X1 represents the right hand direction when the user observes the drawing which is the illuminated object 5. Y1 is perpendicular to X1 and represents the direction of the user's head. Z1 is perpendicular to X1 and Y1 and represents the direction from the painting display surface of the illuminated object 5 to the user side. X2 is the direction opposite to X1, Y2 is the direction opposite to Y1, and Z2 is the direction opposite to Z1.

[0011] The information processing apparatus 1 controls the lighting device 2. The information processing apparatus 1 controls the audio device 3. Details of the hardware configuration and functional configuration of the information processing apparatus 1 will be described later.

[0012] The lighting device 2 includes a first lighting lamp 21, a second lighting lamp 22, and a lighting lamp control unit 23. The lighting device 2 may include a plurality of first lighting lamps 21 and a plurality of second lighting lamps 22. The plurality of first lighting lamps 21 and the plurality of second lighting lamps 22 may illuminate different regions of the object to be illuminated 5, respectively.

[0013] The first lighting lamp 21 is a lighting lamp capable of irradiating visible light on the object to be illuminated 5 described later. The first lighting lamp 21 includes, for example, an incandescent bulb, a halogen lamp, and an LED bulb. Visible light is light having a wavelength visible to the human eye, and in terms of the wavelength range, it refers to light having a wavelength of 380 nm or more and 780 nm or less. The first lighting lamp 21 has a spectrum having a half-value width of, for example, 1000 nm or more based on the entire wavelength range. That is, the first lighting lamp 21 is lighting having an extremely wide spectrum range extending from the visible region to the infrared light region. In the present embodiment, the first lighting lamp 21 has an ultraviolet intensity that is 1 / 10 or less, desirably 1 / 100 or less, and preferably 1 / 1000 or less of the intensity of ultraviolet light emitted by the second lighting lamp 22 described later. The first lighting lamp 21 illuminates, for example, the object to be illuminated 5 from above or below. The position of the first lighting lamp 21 may be determined according to the position of the frame of the object to be illuminated 5 described later (the positional relationship may be defined).

[0014] The first illumination lamp 21 preferably has a color temperature of 4000K or less. Light with a color temperature of 4000K or less is known to bring about relaxation and calmness as compared with light having a color temperature higher than 4000K. On the other hand, daylight color or daylight white light having a color temperature higher than 4000K, for example, blue-white light having a color temperature of 6000K to 8000K, causes the body to be tense through stimulation to the eyes, increases the contrast of the image, and makes the outline prominent. And the blue-white light impairs the gentle scene of a specific drawing object by the second illumination lamp 22 described later and the effect of gradually changing the color tone and / or brightness within the original screen. Hereinafter, the effect of gradually changing the color tone and / or brightness within the screen is referred to as a gradation effect. The gradation effect is the effect of gradually changing the color tone and / or brightness within the screen. When providing a relaxing and gentle scene and a gradation effect, it is preferable to use light having a color temperature of 4000K or less as described above.

[0015] In addition, the half-value width of the light spectrum of the first illumination lamp 21 is preferably a wide band of 1000 nm or more based on the entire wavelength range. When using LED lighting having a narrow band as the first illumination lamp 21, the color rendering property may be lowered. In a drawing having a reflection spectrum in a wavelength range outside the narrow band, the intended reflected light cannot be obtained. As a result, it is difficult to realize the intended display. For example, when using LED lighting having the center of light emission only in blue (bandwidth 20 nm centered on 450 nm), green (for example, bandwidth 20 nm centered on a wavelength of 520 nm), and red (for example, bandwidth 20 nm centered on a wavelength of 630 nm), the intended display is difficult to realize. For example, for a yellow drawing having a reflection peak near 570 nm, the expression of the drawing by the yellow of the peak wavelength cannot be obtained, and the intended display cannot be obtained.

[0016] The second illumination lamp 22 is, for example, an illumination lamp capable of irradiating ultraviolet light. The second illumination lamp 22 is, for example, a fluorescent tube (so-called black light). In the present embodiment, the second illumination lamp 22 irradiates the illuminated object 5 described later with light having a wavelength of 300 nm or more and 400 nm or less, which is generally called UVA. The second illumination lamp 22 irradiates the illuminated object 5, for example, from the Y1 direction or the Y2 direction. Regarding the illumination direction, the positional relationship with the frame of the illuminated object 5 described later may be defined.

[0017] The second illumination lamp 22 irradiates the illuminated object 5 with ultraviolet rays in a narrower wavelength range than ultraviolet light (wavelength 10 nm or more and 400 nm or less) in the ordinary sense. A plurality of types of fluorescent materials or phosphorescent materials described later are used, and the peak wavelengths of their respective absorption spectra do not coincide. The second illumination lamp 22 is preferably an ultraviolet illumination in which the half-value width of the optical spectrum including each peak wavelength is 50 nm or more. Thereby, the light emission excited at the peak absorption wavelength of the fluorescent material and the phosphorescent material can be obtained. And the light emission corresponding to the density of the fluorescent material and the phosphorescent material can be obtained. As a result, a gradation of the emission intensity in the plane reflecting the gradation of the density of the fluorescent material and the phosphorescent material is obtained, and the intended gradation effect is obtained. When LED ultraviolet illumination is used as the second illumination lamp 22, it is difficult to obtain a gentle and delicate gradation effect described later. This is because there are many cases where the half-value width of LED ultraviolet illumination is 50 nm or less. In a light-emitting material with small absorption at the peak wavelength of LED ultraviolet illumination, the light emission may be impaired.

[0018] The illumination lamp control unit 23 supplies current to the first illumination lamp 21 and the second illumination lamp 22. Further, the illumination lamp control unit 23 controls the first illumination lamp 21 so as to irradiate the illuminated object 5 with visible light. Further, the illumination lamp control unit 23 controls the second illumination lamp 22 so as to irradiate the illuminated object 5 with ultraviolet light.

[0019] The audio device 3 includes a sound source playback unit 31 and a speaker 32. The sound source playback unit 31 plays back voice data in, for example, the MP3 format. The speaker 32 is, for example, a dynamic speaker that vibrates a diaphragm based on a voice coil and a magnet to produce sound.

[0020] The communication device 4 receives a control signal from the information processing device 1 described later and sends the received control signal to the above-described lighting device 2 and audio device 3.

[0021] The illuminated object 5 includes a base material 50, a first graphic layer 51, and a second graphic layer 52. As shown in FIG. 1, the illuminated object 5 is irradiated with visible light from the first illumination lamp 21 and ultraviolet light from the second illumination lamp 22. FIG. 2(a) is a cross-sectional view of the illuminated object 5 shown in FIG. 1 cut along the line s1-s1. The base material 50 is, for example, a canvas in which a canvas is stretched over a wooden frame.

[0022] As shown in FIG. 2(a), the first graphic layer 51 is in contact with the base material 50 and is located on the Z1 direction side of the base material 50. The first graphic layer 51 displays the first graphic so as to be visible under visible light. The first graphic includes a drawing object. The drawing object is also referred to as a drawing object and refers to each image constituting a two-dimensional image. As the drawing object, in the example of the landscape painting shown in FIG. 1, trees, Mount Fuji, and the sky are applicable. The first graphic layer 51 has color materials in the visible region. The color materials in the visible region refer to substances that reflect light of colors visible to the human eye by illuminating visible light, and are color materials in the ordinary sense. The color materials in the visible region include substances that reflect achromatic colors, such as white color materials. Achromatic colors refer to colors where -10 ≦ a* ≦ 10 and -10 ≦ b* ≦ 10 in the L*a*b* color space defined by the International Commission on Illumination standard (CIE1976), desirably colors where -5 ≦ a* ≦ 5 and -5 ≦ b* ≦ 5, and preferably colors where -3 ≦ a* ≦ 3 and -3 ≦ b* ≦ 3. White refers to an achromatic color and a color where 80 ≦ L* in the L*a*b* color space, desirably an achromatic color and a color where 85 ≦ L* in the L*a*b* color space, and preferably an achromatic color and a color where 90 ≦ L* in the L*a*b* color space. However, the achromatic and white color materials are not limited to this.

[0023] The first graphic layer 51 is, for example, a layer of oil painting. The first graphic layer 51 may be a print. The first graphic layer 51 may also be created by a printing machine. The first graphic layer 51 may be, for example, one in which an image is displayed by a combination of dots of primary colors (e.g., cyan, magenta, yellow, and black), such as in gravure printing, screen printing, intaglio printing, letterpress printing, etc.

[0024] The first graphic layer 51 may be, for example, a hand-painted oil painting layer or one mass-produced by a printing machine. The process of forming the first graphic layer 51 includes, for example, a process of applying color materials in the visible region over a period of at least 60 seconds or more.

[0025] As shown in Fig. 2(a), the second graphic layer 52 is located on the side opposite to the base material 50, that is, on the Z1 direction side, in contact with the first graphic layer 51. The second graphic layer 52 visibly displays the second graphic under ultraviolet light irradiation. The second graphic layer 52 has an ultraviolet-excited luminescent substance that emits visible light based on ultraviolet light irradiation. The second graphic includes the object to be drawn. The object to be drawn is also referred to as the drawing object and refers to each individual image constituting the two-dimensional image. As the object to be drawn, in the example of the landscape painting shown in Fig. 1, the sea of clouds 521 and the moon 522 are applicable. The second graphic layer 52 has a plurality of types of ultraviolet-excited luminescent substances, and each ultraviolet-excited luminescent substance emits various colors, such as violet, red-violet, red, orange, yellow-orange, yellow, yellow-green, etc., with the irradiation of ultraviolet light. The second graphic is invisible under visible light and visible under ultraviolet light.

[0026] An ultraviolet-excited luminescent substance is a substance that emits visible light by illuminating ultraviolet light. For example, the ultraviolet-excited luminescent substance is a fluorescent substance or a phosphorescent substance. The ultraviolet-excited luminescent substance is transparent or white under visible light without illuminating ultraviolet light. Transparent means that the visible light transmittance after visual sensitivity correction is 90% or more. The fluorescent substance emits visible light while being irradiated with ultraviolet light, and the emission stops when the ultraviolet light irradiation stops. With respect to the lighting (irradiation) and extinguishing (stopping of irradiation) of ultraviolet light, fluorescence emits and extinguishes without a time delay. The phosphorescent substance emits visible light while being irradiated with ultraviolet light, and the emission is maintained for a certain time even after the ultraviolet light irradiation stops. The phosphorescent substance is also referred to as a energy storage substance. With respect to the lighting or irradiation of ultraviolet light, the phosphorescent substance emits light with a time delay and extinguishes with a time delay. With respect to the extinguishing of ultraviolet light or the stopping of irradiation, the phosphorescence disappears with a time delay. The ultraviolet-excited luminescent substance is adhered to a base material 50 (e.g., painting, calligraphy, painting and calligraphy, print) in which a landscape, object, character, image, etc. are represented as a two-dimensional image by the first graphic layer 51. The second graphic layer 52 is formed, for example, by applying an ultraviolet-excited luminescent substance to the base material 50 on which the first graphic layer 51 is formed. The ultraviolet excitation luminescent substance is a pigment or a dye. A pigment is a material that has color and is insoluble in water or other solvents. A dye is a material that has color and is soluble in water or other solvents.

[0027] The second graphic layer 52 is formed by the second graphic. The second graphic is, for example, the sea of clouds 521 and the moon 522 in FIG. 1. Here, the second graphic has a specific graphic. The specific graphic is a graphic having a gradation region. The gradation region is a region where the hue, lightness and / or chroma observed in the light emission from the ultraviolet excitation luminescent substance gradually change in the plane under ultraviolet irradiation. For example, the specific graphic is the sea of clouds 521 in the drawing of Mount Fuji shown in FIG. 1. Hereinafter, the sea of clouds 521 will be described as an example of the specific graphic. The second graphic not similar to the specific graphic does not have a gradation region. For example, the moon 522 does not have a gradation region. Hereinafter, the moon 522 will be described as an example of the second graphic that is not a specific graphic.

[0028] An example with a gradation region where the hue, lightness and / or chroma gradually change in the plane under ultraviolet irradiation will be described. Regarding the change in the display color, it will be described using the CIE1976 chromaticity diagram coordinates. The region is divided into sections of 4 millimeters square, and the average values of the L*, a*, and b* values of the light emission from the ultraviolet excitation luminescent substance in the section are derived by existing techniques. In the gradation region, under uniform ultraviolet irradiation, the difference in the average value of the L* values in adjacent 4-millimeter square sections is preferably within 30, the difference in the average value of the a* values is within 30, and / or the difference in the average value of the b* values is within 30. Thereby, a natural and smooth drawing expression becomes possible.

[0029] Desirably, in the gradation region, the difference in the average value of L* values in adjacent 4 mm square sections may be within 20, the difference in the average value of a* values may be within 20, and / or the difference in the average value of b* values may be within 20. Thereby, the presence of gradation can be easily discriminated, and a delicate drawing can be expressed.

[0030] Preferably, in the gradation region, the difference in the average value of L* values in adjacent 4 mm square sections may be within 10, the difference in the average value of a* values may be within 10, and / or the difference in the average value of b* values may be within 10. Thereby, a delicate drawing expression in which it is barely possible to determine whether gradation is applied can be achieved.

[0031] In the gradation region, the lightness changes by, for example, 20 or more in terms of the L* value. The lightness may desirably change by 40 or more, and preferably 60 or more. Thereby, a drawing expression with a clear distinction between day and night can be achieved.

[0032] The ultraviolet excitation light-emitting substance of the cloud sea 521 (specific figure) contains a pigment. The cloud sea 521 in this embodiment contains a pigment, thereby bringing about sufficient in-plane variation of display colors with high reproducibility. The in-plane variation of the display color is measured, for example, based on the amount of change in coordinates in the L*a*b* color space defined by the International Commission on Illumination standard (CIE1976) as described above. On the other hand, although details will be described later, the second figure coated with a dye such as a brush is suitable for a flat and non-gradated display. The moon 522 has, for example, a dye coated with a brush.

[0033] In addition, the ultraviolet excitation light-emitting substance of the cloud sea 521 (specific figure) has pigment spray marks. Pigment spray marks are the traces of sprayed pigments. When observing the pigment spray marks, the contour of the colorant application area is not clear, and when magnifying and observing the contour part, it can be confirmed that the colorants are scattered discretely. Pigment spray marks refer to those in which any of the following states (A) to (D) can be observed when magnifying and observing under a black light using, for example, a 50-fold magnifying glass. (A) Spots of paint containing pigments are scattered at intervals. (B) The density of the paint increases, and the spots of paint containing pigments are partially combined with each other, forming a mottled pattern. (C) Further increasing the density of the paint, the paint containing pigments forms a marbled pattern without gaps. (D) Above (A) to (C) above, one or more types of paints containing pigments in any of the states (A) to (C) with different types (concentration, chromaticity, saturation, and / or lightness) are superimposed.

[0034] The step of forming the second graphic layer 52 corresponding to the cloud sea 521 includes, for example, a spraying step of spraying an ultraviolet-excited luminescent substance with an airbrush. An airbrush, also called an air spray, is a device that applies a coloring material to an object by spraying the coloring material. By spraying with an airbrush, the outline can be blurred. In particular, when pigments are used as the coloring material, an excellent gradation effect can be obtained compared to the case of using dyes. This is because pigments are insoluble in solvents and granular, and a state where the density gradually changes in the plane can be obtained. In contrast, dyes are soluble in solvents and the density is uniform in the solvent. Also, the spraying step is suitable for mechanization by a robot.

[0035] The spraying of the coloring material corresponding to the cloud sea 521 (specific graphic) is preferably carried out in multiple times. Carrying out the spraying operation of the coloring material in multiple times means that there are steps of spraying coloring materials with different concentrations, steps of spraying coloring materials with different mixing ratios, and / or steps of spraying coloring materials within different spraying ranges. The number of times of dividing the spraying of the coloring material into multiple times is at least 2 times or more, preferably 3 times or more, and preferably 5 times or more.

[0036] The inkjet process corresponding to the Yunhai 521 (specific figure) includes, for example, at least a first inkjet process for jetting a first ink and a second inkjet process for jetting a second ink. The first ink used in the first inkjet process and the second ink used in the second inkjet process differ, for example, in the concentration of the ink and / or the mixing ratio of a plurality of inks. Thereby, it becomes easy to ensure a sufficient degree of change in display color, particularly when pigments are employed as the inks.

[0037] The inkjet process corresponding to the Yunhai 521 (specific figure) overlaps the inkjet ranges of the inks and varies the inkjet density. In the overlapping region where two inks are jetted overlappingly, it is preferable that the densities of the two inks each decrease as the degree of overlap increases from the beginning of the overlap. Thereby, particularly when pigments are employed as the inks, in the overlapping region, one color gradually becomes lighter and the other color gradually becomes darker, and within the plane, the color changes from one color to the other. For example, when one is orange and the other is red, within the overlapping region, the display color gradually changes from orange to red within the plane.

[0038] The second graphic layer 52 preferably includes the upper half of the illuminated object 5 when the second illuminating lamp 22 illuminates the illuminated object 5 from above, and includes the lower half of the illuminated object 5 when the second illuminating lamp 22 illuminates the illuminated object 5 from below. Thereby, the second graphic layer 52 will be located at a position close to the second illuminating lamp 22. Then, the second illuminating lamp 22 can preferably illuminate the second graphic layer 52 specifically for the second graphic layer 52, and a rich gradation effect can be obtained.

[0039] The relationship between the first graphic layer 51 and the second graphic layer 52 will be described with reference to FIGS. 2(a) to 2(c). Figure 2(b) shows the illuminated object 5 observed in a state where only the first illumination lamp 21 is lit. As shown in Figure 2(b), on the illuminated object 5, a Mount Fuji, white clouds, and sky, which are the first figures, are drawn in the first figure layer 51. It can also be said that the first figure layer 51 has, for example, the sky, white clouds, and Mount Fuji as the first figures. Figure 2(c) shows the illuminated object 5 observed in a state where the second illumination lamp 22 is lit and ultraviolet rays are irradiated onto the illuminated object 5. As shown in Figure 2(c), the second figure layer 52 represents the second figure. The second figure layer 52 includes a second figure layer 52 showing a sea of clouds 521 and a second figure layer 52 showing a moon 522. The sea of clouds 521 includes a sea of clouds 521a dyed yellow - orange, a sea of clouds 521b dyed orange, and a sea of clouds 521c dyed red. The sea of clouds 521a has a pigment that emits yellow - orange fluorescence. The sea of clouds 521b has a pigment that emits orange phosphorescence. The sea of clouds 521c has a pigment that emits red phosphorescence. The second figure layer 52 corresponding to the sea of clouds 521a, the second figure layer 52 corresponding to the sea of clouds 521b, and the second figure layer 52 corresponding to the sea of clouds 521c partially overlap each other.

[0040] The density of the ultraviolet - excited luminescent substance (pigment) in the sea of clouds 521a gradually decreases as it overlaps with the sea of clouds 521b. On the other hand, the density of the ultraviolet - excited luminescent substance (pigment) in the sea of clouds 521b gradually decreases as it overlaps with the sea of clouds 521a. For example, from the sea of clouds 521a to the sea of clouds 521b, in these overlapping regions, the ratio of the yellow - orange ultraviolet - excited luminescent substance changes from 100% to 0%, and the ratio of the orange ultraviolet - emitting substance changes from 0% to 100%.

[0041] The moon 522 (the second figure layer 52) does not have a gradation region. The moon 522 has, for example, an ultraviolet - excited luminescent substance of a dye or a pigment. It is preferable that the moon 522 has an ultraviolet - excited luminescent substance of a dye. It is preferable that the moon 522 is applied with a brush rather than an airbrush. Thereby, the outline of the moon 522 can be made prominent.

[0042] <Hardware Configuration of the Information Processing Apparatus 1> FIG. 2 is a block diagram showing an example of the hardware configuration of the information processing apparatus 1 according to the present embodiment. The information processing apparatus 1 includes a CPU (Central Processing Unit) 11, a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, a bus 14, an input / output interface 15, an output unit 16, an input unit 17, a storage unit 18, a communication unit 19, and a drive 20.

[0043] The CPU 11 executes various processes according to a program recorded in the ROM 12 or a program loaded from the storage unit 18 into the RAM 13. The RAM 13 also appropriately stores data and the like necessary for the CPU 11 to execute various processes. The CPU 11, the ROM 12, and the RAM 13 are interconnected via the bus 14. The input / output interface 15 is also connected to this bus 14.

[0044] The output unit 16, the input unit 17, the storage unit 18, the communication unit 19, and the drive 20 are connected to the input / output interface 15. The output unit 16 is composed of a display, a speaker, etc., and outputs various information as images and sounds. The input unit 17 is composed of a keyboard, a mouse, etc., and inputs various information. The storage unit 18 is composed of a hard disk, a DRAM (Dynamic Random Access Memory), etc., and stores various data. The communication unit 19 communicates with other devices via a network including the Internet.

[0045] A removable medium 201 composed of a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory, etc. is appropriately mounted on the drive 20. The program read from the removable medium 201 by the drive 20 is installed in the storage unit 18 as necessary. The removable medium 201 can also store various data stored in the storage unit 18 in the same manner as the storage unit 18.

[0046] <Functional Configuration of Information Processing Apparatus 1> FIG. 3 is a functional block diagram showing an example of the functional configuration of the information processing apparatus 1, the lighting apparatus 2, and the audio apparatus 3.

[0047] In the CPU 11 of the information processing apparatus 1, when operating, the pattern acquisition unit 111 and the pattern output unit 112 function.

[0048] Also, in the storage unit 18 of the information processing apparatus 1, various databases are provided. The databases have, for example, an irradiation pattern DB 181 and a sound source DB 182 that stores sound sources. The irradiation pattern DB 181 stores the drawing displayed on the illuminated object 5 and the irradiation pattern of the light irradiated from the lighting apparatus 2 associated with the drawing. The irradiation pattern DB 181 may store a plurality of irradiation patterns. The sound source DB 182 stores, for example, audio data in MP3 format and the reproduction pattern of the audio data.

[0049] The pattern acquisition unit 111 acquires which of the preset image patterns of visible light and ultraviolet light associated with the illuminated object 5 is to be selected. The pattern acquisition unit 111 further acquires the lighting pattern regarding the first lighting lamp 21 and the second lighting lamp 22 from the irradiation pattern DB 181, and acquires the reproduction pattern of the audio data from the sound source DB 182. The pattern output unit 112 transmits, to the lighting lamp control unit 23, the pattern (irradiation pattern) of the voltage and current output to the first lighting lamp 21 and the second lighting lamp 22 via the communication unit 19 and the communication device 4. In parallel, the pattern output unit 112 transmits, to the audio apparatus 3, the reproduction pattern of the sound source via the communication unit 19 and the communication device 4.

[0050] The pattern output unit 112 outputs an illumination pattern and changes the display of the drawing of the illuminated object 5. An example will be described where the output from the pattern output unit 112 starts during the day, turns from yellow - orange to red, and then at night, depicts a picture of Mount Fuji with the moon rising. In the following example, there is an illumination device 2 not shown in FIG. 1. One illumination device 2 illuminates the half of the illuminated object 5 centered in the Y1 direction, and the other illumination device 2 illuminates the half of the illuminated object 5 centered in the Y2 direction. Unless otherwise specified, the illumination lamp control unit 23 performs the same control on both the one and the other illumination devices 2 simultaneously. Hereinafter, unless otherwise specified, the one and the other illumination devices 2 will be described without distinction.

[0051] First, to represent Mount Fuji during the day, the illumination lamp control unit 23 turns on only the first illumination lamp 21 and irradiates the illuminated object 5 with visible light. At this time, the illumination lamp control unit 23 turns off the second illumination lamp 22. The second graphic layer 52 shown in FIG. 2(a) is transparent in the visible light wavelength region. The visible light emitted from the first illumination lamp 21 passes through the second graphic layer 52. The visible light is reflected on the surface of the first graphic layer 51, and for example, a drawing of Mount Fuji drawn with ordinary oil paints is represented.

[0052] Next, the illumination lamp control unit 23 gradually turns off the first illumination lamp 21 and gradually turns on the second illumination lamp 22. The illumination lamp control unit 23 controls the second illumination lamp 22 to irradiate the white clouds drawn on the foothills of Mount Fuji with ultraviolet light. The ultraviolet light excites the ultraviolet - excited luminescent substance of the second graphic layer 52 shown in FIGS. 2(a) and 2(c) to emit visible light.

[0053] As a result, the pattern that was visible in visible light gradually becomes invisible, and at the same time, the pattern that was not visible in visible light becomes visible as it glows. As shown in FIGS. 2(b) and 2(c), as described above, the cloud sea 521a emits yellow-orange light, the cloud sea 521b emits orange light, and the cloud sea 521c emits red light, and they overlap each other. And at the overlapping part, since the density of the pigments gradually changes with each other, the emitted light is mixed with yellow-orange, orange, and red, and the display color gradually changes. A color gradation within the plane is realized. The yellow-orange, orange, and red light emissions from the cloud sea 521 are observed by the observer together with the drawing of Mount Fuji brought about by the first graphic layer 51.

[0054] Furthermore, based on the pattern, the lighting control unit 23 irradiates the half of the illuminated object 5 on the Y1 direction side with ultraviolet light from the second illumination lamp 22 of one illumination device 2 while keeping the first illumination lamp 21 turned off. Since the second graphic layer 52 is not located in the upper air part of Mount Fuji, there is no light emission, and as shown in FIG. 2(c), a dark sky is represented. The fluorescent material made of the dye material of the second graphic layer 52 corresponding to the moon 522 shines white with a distinct outline in the dark screen.

[0055] The lighting control unit 23 turns off the second illumination lamp 22 of one illumination device 2. Thereby, the light emission of the second graphic layer 52 disappears.

[0056] Returning to the beginning, in order to represent Mount Fuji in the daytime, the lighting control unit 23 turns on only the first illumination lamp 21 and irradiates the illuminated object 5 with visible light. At this time, the lighting control unit 23 turns off the second illumination lamp 22.

[0057] <Evaluation result> Hereinafter, the effect that the display color gradually changes within the plane is referred to as a gradation effect. The relaxation effect on the body caused by the gradation effect was evaluated as to how much was obtained.

[0058] In this embodiment, as described above, a plurality of second graphic layers 52 partially overlap each other, and a natural display is realized in which the colors emitted in the overlapping region of each layer are gradually mixed and the boundary is unclear. In the above example, from the sea of clouds 521a to the sea of clouds 521b and up to the sea of clouds 521b, the ultraviolet excitation luminescent material gradually changes and emits light in yellow-orange, orange, and red, realizing a natural display with an unclear mixing boundary.

[0059] In the step of applying the coloring material to the second graphic layer 52 corresponding to the sea of clouds 521, the type of coloring material (dye or pigment), the method of applying the coloring material (brush or airbrush), the number of times of applying the coloring material, and whether to change the concentration of the coloring material, whether to change the mixing ratio of the coloring material, and whether to change the application range of the coloring material when applying the coloring material in multiple times are varied, and the evaluation results are shown in FIG. 5.

[0060] The points of the evaluation results were evaluated while exchanging opinions among 10 experts, and are the average points with 100 as the highest point and 0 as the lowest point. The criteria were set as follows: 100 points means there is a relaxation effect that makes one cry; 60 points means there is a relaxation effect that does not make one cry but causes an obvious relaxation of the body (for example, opening the mouth wide); 30 points means there is a relaxation effect that makes one want to be slowly supported by the backrest of the chair; 0 points means no relaxation effect can be expected.

[0061] FIG. 5 shows the evaluation results. Regarding the step of applying the coloring materials of the plurality of second graphic layers 52 so that the display color gradually changes in the plane, the type of coloring material (dye or pigment), the method of applying the coloring material (brush or airbrush), the number of times of applying the coloring material, and whether to change the concentration of the coloring material, whether to change the mixing ratio of the coloring material, and whether to change the application range of the coloring material when applying the coloring material in multiple times were each changed.

[0062] ≪Evaluation 1≫ When applying the coloring material in three separate applications while changing the concentration of the coloring material, a comparison is made between the case of changing the concentration of the coloring material from a low concentration to a high concentration and the case of changing the concentration of the coloring material from a high concentration to a low concentration. A better evaluation result was shown in the case of changing the concentration of the coloring material from a low concentration to a high concentration. The evaluation result described in FIG. 5 is the evaluation result in the case of changing the concentration of the coloring material from a low concentration to a high concentration.

[0063] ≪Evaluation 2≫ When applying the coloring material in three separate applications while changing the mixing ratio of the coloring material, a comparison is made between the case of changing from a coloring material with a low lightness to a coloring material with a high lightness and the case of changing from a coloring material with a high lightness to a coloring material with a low lightness. A better evaluation result was shown in the case of changing from a coloring material with a low lightness to a coloring material with a high lightness. Regarding the chroma instead of the lightness, a better evaluation result was shown in the case of changing from a coloring material with a low chroma to a coloring material with a high chroma.

[0064] The evaluation result described in FIG. 5 is the evaluation result in the case of changing the lightness of the coloring material after mixing from a low lightness to a high lightness.

[0065] ≪Evaluation 3≫ Verification was carried out for the case of applying the coloring material in three separate applications while changing the application range of the coloring material. A comparison is made between the case of changing the application range of the coloring material from a wide application range to a narrow application range (while narrowing the application range) and the case of changing the application range of the coloring material from a narrow application range to a wide application range (while widening the application range). A better evaluation result was shown in the case of changing the application range of the coloring material from a wide application range to a narrow application range (while narrowing the application range). The evaluation result described in FIG. 5 is the evaluation result in the case of changing the application range of the coloring material from a wide application range to a narrow application range (while narrowing the application range). Based on the evaluation, the following technical knowledge was obtained.

[0066] In terms of the type of coloring material, pigments are superior to dyes. Particularly, a significant difference is observed in terms of whether high brightness can be expressed. When a dye is used, even if the application of the coloring material is carried out in multiple steps while changing the concentration, mixing ratio, and application range of the coloring material, only a flat gradation can be obtained.

[0067] In terms of the application method, an airbrush is superior to a brush. One application of the coloring material by an airbrush has the same finish as applying the coloring material with a brush in two or three steps, and an effect of shortening the working time can be obtained.

[0068] The application of the coloring material is preferably carried out in multiple steps. This method is particularly effective when the coloring material is a pigment. When the coloring material is a pigment, thick coating is possible and higher brightness can be expressed.

[0069] When carrying out the application of the coloring material in multiple steps, it is desirable to change the concentration of the coloring material while doing so. The change in the concentration of the coloring material is preferably changed from a thin concentration to a thick concentration.

[0070] When carrying out the application of the coloring material in multiple steps, it is desirable to change the mixing ratio of multiple coloring materials while doing so. The lower limit value of the mixing ratio may be 0% (not mixing that coloring material), but in the application of the coloring material except at least the first and last times, it is desirable to mix multiple coloring materials (not 0%). Also, better results can be obtained by mixing multiple coloring materials in all applications of the coloring material each time. The coloring material to be applied is preferably one with higher lightness and / or chroma for the coloring material applied later.

[0071] When carrying out the application of the coloring material in multiple steps, it is preferable to change the application range of the coloring material while doing so. Particularly, it is preferable to gradually narrow the application range of the coloring material.

[0072] Among the methods of changing the concentration of coloring materials, the method of changing the mixing ratio of coloring materials, and the method of changing the application range of coloring materials, the most effective method is the method of changing the application range of coloring materials. When the type of coloring material is a dye, sufficient effects cannot be obtained even if the application range of the coloring material is changed. However, when the type of coloring material is a pigment, clear effects can be obtained by changing (e.g., narrowing) the application range of the coloring material.

[0073] <Temporal gradation> So far, the lighting system 100 for expressing the cloud sea 521 having gradation in the plane has been mainly described. The cloud sea 521 may have, as a gradation region, a region where light emission from an ultraviolet-excited luminescent substance whose hue, lightness, and / or chroma gradually change over time is observed under ultraviolet irradiation. Hereinafter, such a gradation is referred to as a temporal gradation, and the region exhibiting the temporal gradation is referred to as a temporal gradation region.

[0074] The region where the cloud seas 521a, 521b, and 521c overlap is a temporal gradation region that realizes a temporal gradation. At the position indicated by the reference symbol P in FIGS. 1 and 2(c), the cloud seas 521a, 521b, and 521c overlap. The change in the expressed color at this position will be described.

[0075] The cloud sea 521a shown in Fig. 2(c) emits yellow-orange light. The cloud sea 521a is formed by a second graphic layer 52 having a fluorescent substance that emits yellow-orange light under ultraviolet irradiation. The cloud sea 521b shown in Fig. 2(c) emits orange light. The cloud sea 521b is formed by a second graphic layer 52 having a phosphorescent substance that emits orange light under ultraviolet irradiation. The phosphorescent substance that emits orange light emits phosphorescence after a predetermined time, for example, 30 seconds, has elapsed since ultraviolet irradiation. The phosphorescent substance that emits orange light emits phosphorescence for a predetermined time, for example, about 30 seconds, even after ultraviolet irradiation has ceased. The cloud sea 521c shown in Fig. 2(c) emits red light. The cloud sea 521c is formed by a second graphic layer 52 having a phosphorescent substance that emits red light under ultraviolet irradiation. The phosphorescent substance that emits red light emits phosphorescence after a longer time has elapsed than the phosphorescent substance that emits orange light after ultraviolet irradiation. The phosphorescent substance that emits red light emits phosphorescence for a longer time than the phosphorescent substance that emits orange light even after ultraviolet irradiation has ceased. The phosphorescent substance that emits red light emits phosphorescence, for example, 1 minute after ultraviolet irradiation. The phosphorescent substance that emits red light emits phosphorescence for, for example, about 1 minute even after ultraviolet irradiation has ceased.

[0076] Fig. 6 is a diagram showing the relationship between the illuminance of ultraviolet light irradiated on the illuminated object 5 and the change in the expressed color. Fig. 6(a) shows the time change of the ultraviolet illuminance. The horizontal axis represents the elapsed time, and the vertical axis represents the irradiation illuminance of ultraviolet light. Fig. 6(b) shows the time change of the emission intensity from the fluorescent substance and the phosphorescent substance. The horizontal axis represents the elapsed time, and the vertical axis represents the emission intensity. In Fig. 6(a) and Fig. 6(b), the horizontal axes are the same. The pattern output unit 112 outputs an irradiation pattern. The illumination lamp control unit 23 irradiates the cloud seas 521a, 521b, and 521c with ultraviolet light from the second illumination lamp 22 in accordance with the signal of the irradiation pattern. As shown in Fig. 6(a), the illumination lamp control unit 23 irradiates with ultraviolet light while gradually increasing the illuminance from time t1 in the first period. Hereinafter, from the second period starting at time t2 to the fourth period starting at time t4, the illumination lamp control unit 23 irradiates ultraviolet light from the second illumination lamp 22 in accordance with the output signal from the pattern output unit 112. The ultraviolet illuminance is kept constant in the second period.

[0077] When the ultraviolet light with time-dependent illuminance is irradiated as shown in Fig. 6(a), as shown in Fig. 6(b), the yellow-orange fluorescent material representing the cloud sea 521a emits fluorescence. The illuminance of the ultraviolet light is gradually increased in the first period from time t1. At this time, the emission intensity of the yellow-orange fluorescence gradually increases. The yellow-orange fluorescent material has no time lag with respect to the irradiation of the ultraviolet light and emits fluorescence in proportion to the irradiation intensity. The initial display is yellow-orange. For example, after a delay of time Δt1, for example 30 seconds, from the start of the irradiation of the ultraviolet light, the orange phosphorescent material of the cloud sea 521b emits light, and the intensity of the emission gradually increases. After a further delay of time Δt2, the red phosphorescent material of the cloud sea 521c emits light, and the intensity of the emission gradually increases. In the second period, the display color changes from yellow-orange to orange and then to red as the emission colors are superimposed.

[0078] Next, as shown in Fig. 6(a), in the third period from time t2, the illuminance of the ultraviolet light is gradually decreased, and at time t3, the light is turned off. In the yellow-orange fluorescence of the cloud sea 521a, the emission intensity decreases in synchronization with the decrease in the ultraviolet irradiation intensity. In the orange phosphorescence of the cloud sea 521b, the emission intensity begins to decrease after a delay of a predetermined time Δt3, for example 30 seconds. In the red phosphorescence of the cloud sea 521c, the emission intensity begins to decrease after a further time Δt4, for example 30 seconds, that is, 1 minute after the ultraviolet irradiation intensity begins to decrease. As for the display of the cloud sea 521, from the state where yellow-orange, orange, and red are superimposed and emitting light, the yellow-orange disappears, the orange disappears, only the red remains, and finally the red also disappears.

[0079] Note that the illumination lamp control unit 23 may gradually decrease the illumination intensity of the visible light from the first illumination lamp 21 in synchronization with gradually increasing the irradiation illuminance of the ultraviolet light from the second illumination lamp 22 in accordance with the signal of the irradiation pattern. The influence of the visible light gradually decreases, the color purity of the light emitted from the ultraviolet-excited luminescent material is improved, and an expression that attracts the observer more is realized. Note that the lighting control unit 23 may gradually increase the irradiation illuminance of the visible light from the first lighting lamp 21 in synchronization with gradually decreasing the irradiation illuminance of the ultraviolet light from the second lighting lamp 22 in accordance with the signal of the irradiation pattern. As the influence of the visible light gradually increases, the color purity of the light emitted from the ultraviolet-excited luminescent material gradually decreases, and a gentle expression is realized.

[0080] In the invention of the above-described embodiment, the description has been made by narrowing down to yellow-orange, orange, and red. The configuration will be described more generally. The lighting system 100 according to the embodiment can continuously change the display color in a series of hues of yellow-orange, orange, red, red-violet, blue-violet, blue, blue-green, cyan, green, yellow-green, and yellow. The illuminated object 5 has a fluorescent material, a phosphorescent material having a predetermined afterglow time, and a phosphorescent material having an afterglow time longer than the predetermined afterglow time, in the order of the hues. The order of the displayed colors is the order of the hues in the color wheel (including both ascending and descending orders). The illuminated object 5 has a phosphorescent material with a longer afterglow time for a color with a slower display timing or order. For example, it is preferable that the illuminated object 5 has a yellow-orange fluorescent material, an orange phosphorescent material with a predetermined afterglow time, and a red phosphorescent material with an afterglow time longer than the predetermined afterglow time. Thereby, the lighting system 100 realizes a display with a time gradation changing from yellow-orange to orange and red. For example, it is preferable that the illuminated object 5 has a green fluorescent material, a blue-green phosphorescent material with a predetermined afterglow time, and a blue phosphorescent material with an afterglow time longer than the predetermined afterglow time. Thereby, a display changing from green to blue-green and blue is realized. As the above-described fluorescent material, a phosphorescent material having an afterglow time shorter than the predetermined afterglow time may be applied.

[0081] (Other embodiments) Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and modifications, improvements, etc. within the scope capable of achieving the object of the present invention are included in the present invention.

[0082] Further, for example, the above-described series of processes can be executed by hardware or by software. In other words, the above-described functional configuration is merely illustrative and not particularly limited. That is, it suffices that the lighting device 2 and the information processing device 1 are provided with functions capable of executing the above-described series of processes as a whole, and the specific functional blocks used to realize this function are not particularly limited to the above examples.

[0083] Also, the location of the functional blocks is not particularly limited and can be arbitrary. For example, the functional blocks of the information processing device 1 may be transferred to other devices or the like, or the functional blocks of other devices may be transferred to a server or the like. Further, one functional block may be configured by hardware alone, by software alone, or by a combination thereof.

[0084] When the series of processes are executed by software, the program constituting the software is installed in a computer or the like from a network or a recording medium. The computer may be a computer incorporated in dedicated hardware. Also, the computer may be a computer capable of executing various functions by installing various programs, for example, a general-purpose smartphone or personal computer in addition to a server.

[0085] A recording medium containing such a program is not only constituted by a removable medium (not shown) distributed separately from the device main body to provide the program to a user or the like, but also constituted by a recording medium or the like provided to a user or the like in a state pre-installed in the device main body. Since the program can be distributed via a network, the recording medium may be mounted on or accessible to a computer connected to or connectable to the network.

[0086] In other words, the lighting device 2 to which the present invention is applied can take various embodiments having the following configurations.

[0087] (1) The lighting device (lighting device 2 in FIG. 1) is a lighting device that illuminates an illuminated object (illuminated object 5 in FIG. 1) having a figure including an image and / or characters on a surface, and includes a first lighting lamp (first lighting lamp 21 in FIG. 1) capable of irradiating the illuminated object with visible light, a second lighting lamp (second lighting lamp 22 in FIG. 1) capable of irradiating the illuminated object with ultraviolet light, and a lighting lamp control means (lighting lamp control unit 23 in FIG. 1) capable of controlling the first lighting lamp and controlling the second lighting lamp. The illuminated object includes a base material (base material 50 in FIG. 1), a first figure layer (first figure layer 51 in FIG. 1) having a first figure formed on the base material, and a second figure layer (second figure layer 52 in FIG. 1) formed on the side of the first figure layer opposite to the base material and having a second figure. The first figure is visible under visible light, the second figure layer has an ultraviolet excitation light-emitting substance that emits visible light based on irradiation with ultraviolet light, the second figure is visible under ultraviolet light, the second figure includes a specific figure (for example, the sea of clouds 521 in FIG. 1), the ultraviolet excitation light-emitting substance of the second figure layer corresponding to the specific figure includes a pigment, and the second figure layer corresponding to the specific figure has a pigment spray mark. It is a lighting device. Thereby, a lighting device is provided that can reproduce with high reproducibility and stably a drawing or the like capable of expressing a landscape including delicate gradation by a method supported by technical knowledge.

[0088] (2) In the lighting device, the color temperature of the first lighting lamp is 4000 K or less. Thereby, a display with a gentle color tone is realized. In particular, warm colors with a high relaxation effect are expressed.

[0089] (3) In the lighting device, the second figure layer corresponding to the specific figure has a plurality of layers, and has a region where the plurality of layers are laminated and / or a region where the plurality of layers do not overlap. Thereby, a display with gradation can be realized.

[0090] (4) The illuminated object has a figure including an image and / or characters on a surface, and is an illuminated object irradiated with visible light and ultraviolet light. The illuminated object includes a base material, a first figure layer having a first figure formed on the base material, and a second figure layer formed on the side opposite to the base material of the first figure layer and having a second figure. The first figure is visible under visible light, the second figure layer has an ultraviolet-excited luminescent material that emits visible light based on irradiation with ultraviolet light, the second figure is visible under ultraviolet light, the second figure includes a specific figure, the ultraviolet-excited luminescent material of the second figure layer corresponding to the specific figure includes a pigment, and the second figure layer corresponding to the specific figure has a pigment spray mark.

[0091] (5) A method for manufacturing an illuminated object is a method for manufacturing an illuminated object having a figure including an image and / or characters. The illuminated object includes a base material, a first figure layer having a first figure formed on the base material, and a second figure layer formed on the side opposite to the base material of the first figure layer and having a second figure. The first figure is visible under visible light, the second figure layer has an ultraviolet-excited luminescent material that emits visible light based on irradiation with ultraviolet light, the second figure is visible under ultraviolet light, the second figure includes a specific figure, the ultraviolet-excited luminescent material of the second figure layer corresponding to the specific figure includes a pigment, and the method for manufacturing the illuminated object includes a step of forming the specific figure by disposing an ultraviolet-excited luminescent material containing a pigment by an airbrush.

Explanation of Reference Numerals

[0092] 1 Information processing device, 2 Lighting device, 3 Acoustic device, 4 Communication device, 5 Illuminated object, 11 CPU, 18 Storage unit, 19 Communication unit, 21 First illuminating lamp, 22 Second illuminating lamp, 23 Illuminating lamp control device, 31 Sound source playback unit, 32 Speaker, 50 Base material, 51 First figure layer, 52 Second figure layer, 521 Sea of clouds, 522 Moon, 100 Lighting system, 111 Pattern acquisition unit, 112 Pattern output unit, 181 Irradiation pattern DB, 182 Sound source DB

Claims

1. An illumination device for illuminating an illuminated object having a figure including an image and / or characters on a surface, comprising: a first illumination lamp capable of irradiating the illuminated object with visible light; a second illumination lamp capable of irradiating the illuminated object with ultraviolet light; an illumination lamp control means for controlling the first illumination lamp and capable of controlling the second illumination lamp; wherein the illuminated object comprises: a base material; a first figure layer having a first figure formed on the base material; a second figure layer formed on the side of the first figure layer opposite to the base material and having a second figure; wherein the first figure is visible under visible light; the second figure layer has an ultraviolet-excited luminescent material that emits visible light based on irradiation with ultraviolet light; the second figure is visible under ultraviolet light; the second figure includes a specific figure; the ultraviolet-excited luminescent material of the second figure layer corresponding to the specific figure contains a pigment, and the second figure layer corresponding to the specific figure has a pigment spray mark; an illumination device.

2. The illumination device according to claim 1, wherein the first illumination lamp has a color temperature of 4000 K or less.

3. The illumination device according to claim 1, wherein the second figure layer corresponding to the specific figure has a plurality of layers, and has a region where the plurality of layers are laminated and / or a region where the plurality of layers do not overlap.

4. An illuminated object having a figure including an image and / or characters on a surface and irradiated with visible light and ultraviolet light, comprising: a base material; a first figure layer having a first figure formed on the base material; a second figure layer formed on the side of the first figure layer opposite to the base material and having a second figure; wherein the first figure is visible under visible light; the second figure layer has an ultraviolet-excited luminescent material that emits visible light based on irradiation with ultraviolet light; the second figure is visible under ultraviolet light; the second figure includes a specific figure; the ultraviolet-excited luminescent material of the second figure layer corresponding to the specific figure contains a pigment, and the second figure layer corresponding to the specific figure has a pigment spray mark; an illuminated object.

5. A method for manufacturing an illuminated object having a figure including an image and / or characters, wherein the illuminated object comprises: a base material; a first figure layer having a first figure formed on the base material; a second figure layer formed on the side of the first figure layer opposite to the base material and having a second figure; wherein the first figure is visible under visible light; ​ ​ ​ ​ ​ ​ ​ ​ The second graphic layer has an ultraviolet-excited luminescent substance that emits visible light based on irradiation with ultraviolet light, The second graphic is visible under ultraviolet light, The second graphic includes a specific graphic, The ultraviolet-excited luminescent substance of the second graphic layer corresponding to the specific graphic contains a pigment, The method for manufacturing the illuminated object is, A step of forming the specific graphic by disposing an ultraviolet-excited luminescent substance containing a pigment by means of an airbrush, having, A method for manufacturing an illuminated object.

Images