JP6466404B2 - Illumination device and illumination method - Google Patents

Description

  The present invention relates to an illumination device and an illumination method that are preferably used for so-called gradation illumination.

  In recent years, gradation illumination that illuminates a radiation angle region by continuously changing brightness and color has attracted attention. This gradation illumination can be realized by, for example, the illumination device disclosed in Patent Document 1.

  The illuminating device disclosed in Patent Document 1 is an illuminating device including a light source composed of a light emitting diode or the like, and a plurality of light emitted from the light source are reproduced in order to reproduce a natural light environment within a viewing angle range. An irradiation area is formed, and variable means for changing the size of at least one of the plurality of irradiation areas is provided. The plurality of irradiation areas include an intermediate area that partially overlaps the intermediate area. The light of each said irradiation area | region which forms an intermediate | middle area | region mixes, and has a mixed color.

  By the way, the illumination device disclosed in Patent Document 1 generates illumination light for the purpose of reproducing a natural light environment and improves the relaxation effect. Therefore, the lighting device disclosed in Patent Document 1 can generate only natural light and can only give a relaxing effect to a person. For this reason, the illuminating device disclosed by the said patent document 1 is not comprised so that various psychological effects can be given to the person who exists in the environment of the illumination light.

JP 2010-157418 A

  The present invention has been made in view of the above circumstances, and an object thereof is to provide an illumination device and an illumination method that can suitably give a predetermined psychological effect to a person who is in an environment of illumination light. It is.

  The illumination device of the present invention includes first and second LED light sources that can emit light of a plurality of colors, and a part of the first light emitted from the first LED light source and the second light emitted from the second LED light source. The first and second LED light sources are controlled so as to emit the first and second lights with different colors from each other and the light source unit that emits the first and second lights so that a part of the LED overlaps with each other in the radiation angle region A chromaticity region in which the chromaticity region of the light that is the maximum saturation of the first and second lights irradiated to the radiation angle region gives a preset predetermined psychological effect. To control the first and second LED light sources. Therefore, the lighting device and the lighting method according to the present invention can suitably give a predetermined psychological effect to a person who is in an environment of illumination light.

  The above and other objects, features and advantages of the present invention will become apparent from the following detailed description and the accompanying drawings.

It is a block diagram which shows the electric constitution of the illuminating device of the 1st aspect in embodiment. It is a circuit diagram which shows the electrical structure of the light source part in the illuminating device of a said 1st aspect. It is a perspective view which shows the external appearance of the illuminating device of a said 1st aspect. It is sectional drawing which shows the structural structure of the light source part in the illuminating device of a said 1st aspect. It is a top view which shows the structure of the LED light source of the said light source part. It is a figure for demonstrating an example at the time of applying the illuminating device of a said 1st aspect to a living room. It is a flowchart which shows the operation | movement in the illuminating device of a said 1st aspect. It is a figure for demonstrating the method of converting the designated color outside a range into the range. It is a figure for demonstrating the mode in a laboratory. It is a figure which shows the range of the color light of the illuminating device LD used for experiment on a CIE1976u'v 'chromaticity diagram, and the color light condition used for experiment. It is a figure which shows the experimental result regarding the psychological effect of being accepted. It is a figure which shows the experimental result regarding the psychological effect called a feeling of comfort. It is a figure which shows the experimental result regarding the psychological effect of a feeling of relaxation. It is a figure which shows the experimental result regarding the psychological effect of a refreshing feeling. It is a figure which shows the experimental result regarding the psychological effect that it can concentrate. It is a figure which shows the experimental result regarding the psychological effect called sleepiness. It is a figure which shows the experimental result regarding the psychological effect of waking up sleepiness. In the u′v ′ chromaticity diagram, each of a white region, a low saturation blue region, and a high saturation purple region is illustrated. It is a perspective view which shows the external appearance of the illuminating device of the 2nd aspect in embodiment. It is a cross-sectional perspective view which shows the structure of the illuminating device of a said 2nd aspect. It is a partial cross section figure which shows the structure of the illuminating device of a said 2nd aspect. It is a figure for demonstrating an example at the time of applying the illuminating device of a said 2nd aspect to a living room. It is a perspective view which shows the external appearance of the illuminating device of the 3rd aspect in embodiment. It is a side view which shows the structure of the illuminating device of a said 3rd aspect.

  Hereinafter, an embodiment according to the present invention will be described with reference to the drawings. In addition, the structure which attached | subjected the same code | symbol in each figure shows that it is the same structure, The description is abbreviate | omitted suitably. In this specification, when referring generically, it shows with the reference symbol which abbreviate | omitted the suffix, and when referring to an individual structure, it shows with the reference symbol which attached the suffix.

(Embodiment)
FIG. 1 is a block diagram illustrating an electrical configuration of the illumination device according to the first aspect of the embodiment. FIG. 2 is a circuit diagram showing an electrical configuration of a light source unit in the illumination device of the first aspect. FIG. 3 is a perspective view showing an appearance of the illumination device of the first aspect. FIG. 4 is a cross-sectional view showing a structural configuration of a light source unit in the illumination device of the first aspect. FIG. 5 is a plan view showing a configuration of an LED light source of the light source unit. FIG. 6 is a diagram for explaining an example when the lighting device of the first aspect is applied to a living room.

  The illumination device LD in the embodiment is a device for performing gradation illumination that gives a desired psychological effect to a person in an illumination light environment. As an example of the illumination device LD in the embodiment, the illumination devices LDa to LDc of the first to third aspects will be described below.

  First, as shown in FIGS. 1 to 6, the illumination device LDa of the first aspect includes a light source unit 1 and a control unit 2. In the examples illustrated in FIGS. 1 to 6, the input unit 3, the power source The unit 4 is further provided.

  The power supply unit 4 is connected to the external power supply 5, the light source unit 1, the control unit 2, and the input unit 3, and receives power supply from the external power supply 5 such as a commercial power supply. It is a circuit that generates predetermined power for operating the input unit 3. For example, the power source unit 4 includes a rectifier circuit that rectifies commercial AC power fed from an external power source into DC power, and a smoothing circuit that smoothes the output of the rectifier circuit. A voltage conversion circuit (converter) that converts voltage values corresponding to the operating voltages of the control unit 2 and the input unit is provided. The DC power generated by the power supply unit 4 is supplied to the light source unit 1, the control unit 2, and the input unit 3.

  The input unit 3 is connected to the control unit 2 and is a circuit for inputting a predetermined instruction or the like to the control unit 2 of the illumination device LDa. The input unit 3 includes, for example, a plurality of switch elements, and each switch element includes a power switch element for turning on and off the lighting device LDa and 1 for performing gradation illumination that gives a predetermined psychological effect. Alternatively, a plurality of selection switch elements and the like are included. One of the selection switch elements is assigned, for example, an instruction to cause the illumination device LDa to perform gradation illumination that provides a comfortable feeling, and the other one is provided with, for example, gradation illumination that provides a clean feeling The instruction to be executed is assigned.

  Further, for example, the input unit 3 may include a power switch element and a touch panel, and may be configured such that predetermined input content is input using the touch panel. The touch panel is a position input for detecting and inputting a display device such as an LCD (Liquid Crystal Display) and an organic EL display and an operation position such as a resistance film method or a capacitance method attached to the display surface of the display device. When the user touches the display position where the input content desired to be input is displayed, the position is detected by the position input device, and the detection is performed. The display content displayed at the set position is input to the illumination device LDa as the user operation input content. In such a touch panel, since the user can easily understand the input operation intuitively, the lighting device LDa that is easy for the user to handle is provided.

  Further, for example, the input unit 3 includes a power switch element and a communication circuit that communicates with a so-called smartphone or tablet computer, and performs predetermined input using predetermined application software installed in the smartphone or tablet computer. The contents may be configured to be input via the smartphone, the tablet computer, or the like.

  When such a touch panel or communication circuit is provided, a color can be selected and input. As a color selection method, for example, a first color selection method in which RGB values in the RGB color system of the CIE (International Lighting Commission) are specified to specify a color mixing ratio, and for example, hue, saturation, and A second color selection method for designating lightness and the like, and simultaneously designating a color mixture ratio and brightness, or a third color selection method for designating a color by selecting from a color table or image as a sample, for example Etc. can be used. The color can be specified and input using a color bar displayed on the display device. Note that the color selection method may be a fourth color selection method in which a color table, an image, or the like as a sample is displayed, and the color is automatically selected and designated.

  The light source unit 1 includes first and second LED light sources 10-1 and 10-2 that can emit light of a plurality of colors, and a portion of the first light emitted from the first LED light source 10-1 and the second LED. The first light and the second light are emitted so that a part of the second light emitted from the light source 10-2 overlaps with each other in a radiation angle region. In such a light source unit 1, a part of the first light and a part of the second light are overlapped with each other in the radiation angle region. The surface to be illuminated can be illuminated with gradation illumination in which the brightness and color are continuously changed to reach the hue B region by the second light through the intermediate region.

  Since each of these first and second LED light sources LED 10-1 and 10-2 has the same configuration, the subscripts are omitted and will be described collectively. The LED light source 10 includes a day white LED 11 that emits day white light, a light bulb color LED 12 that emits light bulb color light, and an RGB LED 13. The LED light source 10 may be configured to include each of the daylight white LEDs 11, the light bulb color LEDs 12, and the RGB LEDs 13 one by one. However, in this embodiment, a plurality of daylight white LEDs 11 are used to perform gradation illumination over a wider radiation angle region. A plurality of light bulb color LEDs 12 and a plurality of RGB LEDs 13 are provided. As shown in FIG. 5, the plurality of daylight white LEDs 11, the plurality of light bulb color LEDs 12, and the plurality of RGB LEDs 13 are arranged along the one direction on a plate-like LED substrate 14 having a wiring pattern and extending in one direction. It is installed side by side. The plurality of daylight white LEDs 11, the plurality of light bulb color LEDs 12 and the plurality of RGB LEDs 13 are arranged in parallel on the LED substrate 14, for example.

  The lunch white LED 11 includes, for example, a B light LED element and a yellow phosphor that emits a complementary yellow color when excited by a part of the B light emitted from the B light LED. By adjusting to about 5000K, daylight white light is emitted. Further, for example, the daylight white LED 11 includes a violet LED element that emits near-ultraviolet light or violet light, a red phosphor that emits red, green, and blue when excited by part of the light emitted from the violet light LED, and green fluorescence. Body and blue phosphors, and adjusting them to adjust the color temperature to about 5000 K, thereby emitting daylight white light. The daylight white LED 11 is supplied with DC power from the power supply unit 4, and the amount of daylight white light is adjusted by controlling the current value by a first current control circuit 23-1 described later of the control unit 2.

  Similarly to the daylight white LED 11, the light bulb color LED 12 includes, for example, a B light LED element and a yellow phosphor, and adjusts the color temperature to about 3000K to radiate light bulb color light. . Further, for example, the light bulb color LED 12 includes a purple LED element and red phosphor, green phosphor, and blue phosphor, and adjusts the color temperature to about 3000K by adjusting them to produce light bulb color light. It radiates. Direct current power is supplied to the light bulb color LED 12 from the power supply unit 4, and the light amount of the light bulb color light is adjusted by controlling a current value by a second current control circuit 23-2 described later of the control unit 2.

  The RGBLED 13 includes, for example, an R light LED element, a G light LED element, and a B light LED element, and adjusts these to emit each color light. That is, the RGBLED 13 is an LED light source that can emit light of a plurality of colors. Direct current power is individually supplied from the power supply unit 4 to the R light LED element, the G light LED element, and the B light LED element of the RGBLED 13, and each current value by a third current control circuit 23-3 described later of the control unit 2. The amount of light of each color is adjusted by individual control.

  More specifically, one structural example of such a light source unit 1 includes a main body 17a made of, for example, aluminum having a substantially prismatic shape elongated in one direction, as shown in FIG. In the main body 17a, a long recess 171a is formed along the one direction formed from one ridge line toward the inside. The recess 171a is branched into two in the middle from the one ridge line toward the inside, and includes two first and second recesses 171a-1 and 171a-2. Both side surfaces of the first recess 171a-1 are curved surfaces that swell outward from the center of the first recess 171a-1, and are slightly light scattering within a range that does not hinder the desired gradation illumination. The first LED board 14-1 may be disposed on the first bottom surface of the first LED board 14-1 via an aluminum heat sink 15-1, for example. On the first LED board 14-1, the plurality of daylight white LEDs 11-1, the plurality of light bulb color LEDs 12-1, and the plurality of RGB LEDs 13-1 are arranged in parallel along the one direction. That is, the first LED light source 10-1 is disposed on the first bottom surface of the first recess 171a-1. Similarly, both side surfaces of the second recess 171a-2 each have a curved shape that swells outward from the center of the second recess 171a-2, and is slightly light within a range that does not hinder desired gradation illumination. The second LED substrate 14-2 may be disposed on the second bottom surface of the second LED substrate 14-2 via, for example, an aluminum heat sink 15-2. On the second LED substrate 14-2, the plurality of daylight white LEDs 11-2, the plurality of light bulb color LEDs 12-2, and the plurality of RGB LEDs 13-2 are arranged in parallel along the one direction. That is, the second LED light source 10-2 is disposed on the second bottom surface of the second recess 171a-2. The first LED light source 10-1 and the second LED light source 10-2 are such that the first optical axis AX1 of the first LED light source 10-1 and the second optical axis AX2 of the second LED light source 10-2 intersect each other. The first and second recesses 171a-1 and 171a-2 are disposed respectively. For example, the first bottom surface of the first recess 171a-1 and the second bottom surface of the second recess 171a-2 are formed so as to cross each other at their extended surfaces. The first optical axis AX1 of the first LED light source 10-1 is a radiation surface of each of a plurality of daylight white LEDs 11-1, a plurality of light bulb color LEDs 12-1, and a plurality of RGB LEDs 13-1 arranged along the one direction ( The first normal direction of the first plane formed by the light emitting surface. The second optical axis AX1 of the second LED light source 10-2 has radiation surfaces (a plurality of daylight white LEDs 11-2, a plurality of light bulb color LEDs 12-2, and a plurality of RGB LEDs 13-2 arranged in parallel along the one direction ( This is the second normal direction of the second plane formed by the light emitting surface. In this way, the first light axis AX1 and the second optical axis AX2 intersect each other, so that the light flux from the first LED light source 10-1 and the second LED light source 10 are located at the position of the cover member 16a that is the light emission window of the illumination device. The light emitting window that can overlap the light flux from -2 can be reduced in area. That is, the entire lighting device can be configured compactly. In a radiation angle region that is separated from the light source unit 1 by a predetermined distance, a part of the first light and a part of the second light overlap each other, and gradation illumination is realized on the irradiated surface. Each point on the irradiated surface may be equidistant from the light source unit 1, and does not necessarily have to be equidistant from the light source unit 1, and the distance from the light source unit 1 may change. A pair of grooves are formed along the one direction in the vicinity of the opening of the recess 171a in the main body 17a, and each of the pair of grooves has a long curved plate shape along the one direction. Both ends of the cover member 16a are fitted, and the opening of the recess 171a is closed by the cover member 16a. The cover member 16a is formed of a material having translucency with respect to the first light emitted from the first LED light source 10-1 and the second light emitted from the second LED light source 10-2. Note that the cover member 16a may have a slight light scattering property as long as desired gradation illumination is not hindered.

  Although the light source unit 1 may be configured to include only the RGBLED 13, the light source unit 1 may be configured to include only the RGBLED 13 by further including the daylight white LED 11 and the light bulb color LED 12 as in the present embodiment. Color rendering can be improved. The illumination device LDa of the present embodiment is more efficient when the gradation illumination desired to be radiated by the illumination device LDa contains a lot of day white components of the day white LED 11 or a lot of bulb color components of the bulb color LED 12. You can get color and brightness well.

  The control unit 2 controls the first and second LED light sources 10-1 and 10-2 so as to emit the first and second lights with mutually different colors. And the control part 2 controls the 1st and 2nd LED light sources 10-1 and 10-2 so that the 1st and 2nd light irradiated to a radiation | emission angle area | region is contained in predetermined conditions. The predetermined condition will be described later. The control unit 2 includes, for example, a CPU (Central Processing Unit) 21, a memory circuit 22, and a current control circuit 23.

  The current control circuit 23 is a day white LED 11-1, 11-2, light bulb color LED 12-1, 12-2 and RGB LED 13-1, 13- in the first and second LED light sources 10-1, 10-2 according to the control of the CPU 21. 2 is a circuit for controlling each current flowing in each of the two. The current control circuit 23, for example, a first current control circuit 23-1 that controls each current that flows through each of the daylight white LEDs 11-1 and 11-2, and each current that flows through each of the light bulb color LEDs 12-1 and 12-2. A second current control circuit 23-2 to be controlled and a third current control circuit 23-3 to control each current flowing in each of the RGB LEDs 13-1, 13-2 are provided. Each of the first to third current control circuits 23-1 to 23-3 includes, for example, a variable current source controlled by the CPU 21. The current control circuit 23 may vary the current by PWM (Pulse Width Modulation) control.

  The memory circuit 22 is a circuit that stores various predetermined programs and various predetermined data. The various predetermined programs include, for example, an illumination control program for performing gradation illumination so as to give a predetermined psychological effect. The various kinds of predetermined data include data necessary for execution of the predetermined program, such as data representing a color region that gives the psychological effect for each psychological effect by coordinate values in accordance with the CIE 1976 u′v ′ chromaticity diagram. Etc. are included. Such a memory circuit 22 includes, for example, a ROM (Read Only Memory) that is a nonvolatile storage element, an EEPROM (Electrically Erasable Programmable Read Only Memory) that is a rewritable nonvolatile storage element, and the like. The memory circuit 22 includes a RAM (Random Access Memory) that serves as a working memory for the CPU that stores data generated during execution of the predetermined program.

  The CPU 21 is a circuit that performs illumination control for gradation illumination so as to give a predetermined psychological effect as described later by reading and executing the predetermined program.

  The illumination device LDa of the first aspect having such a configuration is a horizontal projection type (bar system) device that performs gradation illumination using, for example, indoor surfaces such as a ceiling surface, a wall surface, and a floor surface as an irradiated surface. For example, when gradation illumination is performed with the ceiling surface as the illuminated surface, as shown in FIG. 6, the plate-shaped long push-up that is long in one direction provided on the wall at a predetermined height from the floor surface is A lighting device LDa of one mode is arranged and used.

  Next, the operation of this embodiment will be described. FIG. 7 is a flowchart showing the operation of the illumination device of the first aspect. FIG. 8 is a diagram for explaining a method of converting a designated color outside the range into the range.

  In FIG. 7, first, the user turns on the power switch element of the illumination device LDa to operate the illumination device LDa. Then, the user inputs a light emission color from the input unit 3 in order to perform gradation illumination. For example, any one of the first to third color selection methods described above is used to input the emission color. Thus, the emission color is input via the input unit 3 (S1).

  When receiving the input of the emission color from the user via the input unit 3, the CPU 21 converts the input emission color into the u'v 'coordinate value in the CIE 1976 u'v' chromaticity diagram (S2). For example, when the emission color is input as R value, G value, and B value in the CIE RGB color system, the R value, G value, and B value in the RGB color system are converted to u′v by a known conversion formula. Converted to 'coordinate system u' and v 'values. Further, for example, when the emission color is input as an X value, a Y value, and a Z value of the CIE XYZ color system, the X value, the Y value, and the Z value of the XYZ color system are converted to u ′ by a known conversion formula. It is converted into u ′ value and v ′ value in the v ′ coordinate system.

  Next, in the CPU 21, the colors of the u ′ value and the v ′ value that have undergone the coordinate conversion (the color obtained by the processing S <b> 2, the light emission color input by the user) are within a color range (condition) that gives a predetermined psychological effect. Is determined based on data representing the range (condition) of the color that gives the predetermined psychological effect stored in the memory circuit 22 (S3).

  For example, even when the user arbitrarily selects a desired hue combination, when providing a suitable illumination that is psychologically acceptable, the range (condition) is set such that the first and second lights are described later. In the CIE 1976 u′v ′ chromaticity diagram, the chromaticity range of light with the maximum saturation of (u ′, v ′) is the coordinate point R_4 (0.440, 0.506), R-OR_4 (0.419). 0.521), OR_4 (0.398, 0.537), OR-Y_4 (0.302, 0.549), Y_4 (0.237, 0.557), Y-G_4 (0.204, 0). .559), G_4 (0.085, 0.568), G-BG_4 (0.098, 0.483), BG_4 (0.112, 0.398), BG-B_4 (0.122, 0.361) ), B_4 (0.173, 0.169), BP 4 (0.245, 0.230), P_4 (0.317, 0.291), P-R_4 (0.379, 0.398), and an upper limit boundary closed loop line obtained by connecting the points; u ′, v ′) coordinate points R_1 (0.268, 0.482), R-OR_1 (0.262, 0.485), OR_1 (0.257, 0.489), OR-Y_1 (0. 233, 0.492), Y_1 (0.217, 0.494), Y-G_1 (0.209, 0.495), G_1 (0.179, 0.497), G-BG_1 (0.182, 0.476), BG_1 (0.186, 0.455), BG-B_1 (0.188, 0.445), B_1 (0.201, 0.397), BP_1 (0.219, 0. 413), P_1 (0.237, 0.428), P-R_1 0.252,0.455) first is that contained in the chromaticity region between the lower boundary closed loop line obtained by connecting the points of.

  As a result of the determination in the process S3, when the color in the process S2 is within the color range (condition) that gives the predetermined psychological effect (Yes), the CPU 21 executes the process S6, while the determination As a result, when the color by the process S2 is not within the color range (condition) that gives the predetermined psychological effect (No), that is, the color range by which the color by the process S2 gives the predetermined psychological effect When it is outside (No), the CPU 21 executes the process S4.

  In the process S4, the CPU 21 determines whether or not to convert the color (the light emission color input by the user) obtained in the process S2 into a color range that gives the predetermined psychological effect. For example, the illumination device LDa further includes a display unit that performs a display for inquiring the user whether or not to convert (the input unit 3 may be a display unit of the smartphone or tablet computer if the input unit 3 includes a communication circuit). Further, whether the conversion is permitted or not is input by the user via the input unit 3, and the determination may be executed in response to the input. If the process S4 is omitted and it is determined in the process S3 that the color of the process S2 is not within the color range (condition) that gives the predetermined psychological effect, the next process S5 is executed, and the process The illuminating device LDa may be configured to automatically convert the color according to S2 (the light emission color input by the user) into the color range that gives the predetermined psychological effect. In addition, for example, a display unit is further provided in the illumination device LDa, and a warning that the color (the emission color input by the user) by the processing S2 is out of the color range (condition) that gives the predetermined psychological effect is issued. It may be displayed on the display unit.

  In the process S5, the CPU 21 converts the color (the light emission color input by the user) obtained in the process S2 so as to be within the color range (condition) that gives the predetermined psychological effect. In this conversion, for example, as shown in FIG. 8, the color obtained by the process S2 (the light emission color input by the user) is a point represented by the u′v ′ coordinate value of the color obtained by the process S2 (specified by the user). Color line) and a line segment connecting the center point (white point) of the color range giving the predetermined psychological effect intersects with the boundary of the color range giving the predetermined psychological effect (conversion color point) Converted to color. Then, processing S6 is executed following processing S5.

  In the process S6, when the CPU 21 determines Yes in the process S3, the first and second LED light sources 10-1 and 10-2 emit light in the color obtained by the process S2 (light emission color input by the user). As described above, the current control is performed on the first and second LED light sources 10-1 and 10-2 via the current control circuit 23. When the CPU 21 determines No in the process S3, the first and second LED light sources 10-1 and 10-2 emit light with the colors of the u ′ value and the v ′ value converted in the process S5. Current control is performed on the first and second LED light sources 10-1 and 10-2 via the current control circuit 23. For example, in the case of emitting the emission color by the RGBLED 13, for example, by setting a mixing ratio of three colors of R value, G value and B value represented by 8-bit resolution according to the emission color, the emission color is changed. Can radiate. In addition, when using the daylight white LED 11 and the light bulb color LED 12, the mixing ratio of the three colors of the R value, the G value, and the B value is appropriately adjusted according to the ratio of the daylight white light and the light bulb color light. As a result, the first and second LED light sources 10-1 and 10-2 emit the first and second lights, respectively. For example, as shown in FIG. 6, the ceiling surface of the surface to be illuminated with the first and second lights. Gradient lighting.

  In the illumination device LDa and the illumination method implemented in the illumination device LDa in this embodiment, the first and second lights emitted from the first and second LED light sources 10-1 and 10-2 in different colors are Since each part is emitted so as to overlap each other in the radiation angle region, the illumination device LDa in this embodiment and the illumination method mounted thereon can perform gradation illumination. In the illumination device LDa and the illumination method implemented in the illumination device LDa in the present embodiment, the first and second lights are included in a chromaticity region that gives a predetermined psychological effect to be described later. Gradient illumination can be achieved with the light provided. Therefore, the illumination device LDa and the illumination method mounted thereon according to the present embodiment can suitably give a predetermined psychological effect to a person who is in an environment of illumination light.

(Experiment; Examples, Comparative Examples)
FIG. 9 is a diagram for explaining a state in the laboratory. 9A is a plan view and FIG. 9B is a side view. FIG. 10 is a diagram showing the range of color light of the illumination device LD used in the experiment on the CIE 1976 u′v ′ chromaticity diagram and the color light conditions used in the experiment. In FIG. 10, the boundary of the color light range of the illumination device LD used in the experiment is indicated by a broken line, and the color light condition used in the experiment is indicated by a solid line. FIG. 11 is a diagram illustrating an experimental result regarding a psychological effect of being accepted. FIG. 12 is a diagram illustrating an experimental result regarding a psychological effect of comfort. FIG. 13 is a diagram illustrating an experimental result regarding a psychological effect of a feeling of relaxation. FIG. 14 is a diagram illustrating an experimental result regarding a psychological effect of a refreshing feeling. FIG. 15 is a diagram illustrating an experimental result regarding a psychological effect that the user can concentrate. FIG. 16 is a diagram illustrating an experimental result regarding a psychological effect of drowsiness. FIG. 17 is a diagram illustrating an experimental result regarding a psychological effect of waking up sleepiness. FIG. 18 is a diagram for illustrating each of the white region, the low saturation blue region, and the high saturation purple region in the u′v ′ chromaticity diagram.

  In order to realize gradation lighting that gives a predetermined psychological effect to a person by the above-described lighting device LDa, the following experiment was performed.

  In this experiment, an impression of an indoor space in which the wall surface (radiation angle region) of the room was illuminated with indirect illumination light of two colors was performed in a psychophysical experiment. The variables are the hue and saturation of the indirect illumination light.

  The experimental environment is in the experimental booth shown in FIG. The size of this experimental booth is 3000 mm wide x 3000 mm deep x 2400 mm high, and a typical residential private room is assumed. In the center of the booth, a low table LT (manufactured by Nitori Co., Ltd./color: white: width 900 mm × depth 550 mm × height 420 mm / material: MDF, MELAMINE) is arranged, and an illumination device LD is installed thereon. Yes. This illumination device LD was made not to touch the eyes of the subject SP by a blind member made of white styrene board (width 300 mm × depth 200 mm × height 300 mm). The subject SP sits on the office chair OC placed near the rear wall in the experimental booth and observes the entire experimental booth. During the experiment, the light was turned off to 0 lux to avoid the effects of lighting in the experiment booth.

  The illuminating device LD has substantially the same structure as the illuminating device LDa of the first aspect described above, and is a device that can emit the first and second lights in different colors in the forward direction and the upward direction. This illuminating device LD can specify an R value, a G value, and a B value between 0 and 255 on the computer, and can emit each of the first and second lights in arbitrary colors in the forward direction and the upward direction, respectively. is there. The operation of the lighting device LD during the experiment was performed by a computer arranged outside the experiment booth.

  As the hue condition of the experimental condition, a total of eight colors, red, blue, green and yellow, which are basic colors, and orange, purple, blue green and white, which are intermediate colors, were adopted. As the saturation condition, two conditions of a high saturation condition and a low saturation condition were prepared for each of the seven chromatic colors. The high saturation condition is the highest purity color that the lighting device LD can present for each hue. However, depending on the hue, the degree of saturation is high, and it was obvious that there were several types of light colors that seemed inappropriate to project into the indoor space of the experiment booth. It was dropped. As a result, it was concluded that red was acceptable up to 70% purity, and blue and green were concluded up to 90% purity. For this reason, the purity of these three colors was reduced. The other colors are 100% pure. The low saturation condition was a position where the purity from the high saturation condition of each hue to white was 50%.

  FIG. 10 shows the range of light colors that can be emitted from the illumination device LD used in the experiment and all 15 colors used in the experiment on the u′v ′ chromaticity coordinates. Table 1 shows the u'v 'chromaticity value of each color. That is, in the high saturation condition, purple (high purple) is (0.3174, 0.2906), red (high red) is (0.4396, 0.5055), and orange (high orange) is , (0.3975, 0.5370), yellow (high yellow) is (0.2372, 0.5572), and green (high green) is (0.0845, 0.5681). , Blue green (high blue green) is (0.1116, 0.3981), and blue (high blue) is (0.1726, 0.1690). In the low saturation condition, purple (low purple) is (0.2640, 0.3821), red (low red) is (0.3251, 0.4896), and orange (low orange) is (0.3040, 0.5053), yellow (low yellow) is (0.2239, 0.5154), and green (low green) is (0.1475, 0.5209) , Blue green (low blue green) is (0.1611, 0.4359) and blue (low blue) is (0.1915, 0.3214). Achromatic white (white) is (0.2104, 0.4735). These are based on the CIE 1976 u′v ′ chromaticity diagram.

  As described above, {7 colors (chromatic color) × 2 (saturation condition) +1 color (white)} = 15 colors in the forward direction (the floor side on the wall surface of the radiation angle region) and the upward direction (on the wall surface of the radiation angle region) The permutation including replacement with the ceiling side), that is, all 210 conditions were set as the condition numbers. This is intended for indirect illumination with two different colors, and therefore does not include the condition that the upward direction and the forward direction are the same color light. The white is a representative of a white region described later, the low blue is a representative of a low saturation blue region described below, and the low blue green is a representative of a low saturation blue-green region described below, Low green is a representative of a low saturation green region described later, the low yellow is a representative of a low saturation yellow region described later, and the low orange is a representative of a low saturation orange region described below, The low red is a representative of a low chroma red area described later, the low purple is a representative of a low chroma purple area described below, and the high blue is a representative of a high chroma blue area described below, High blue-green is a representative of a high-saturation blue-green region described later, the high-green is a representative of a high-saturation green region described later, the high yellow is a representative of a high-saturation yellow region described later, and the high orange is The high-saturation orange region, which will be described later, is representative of the high-saturation red region, which will be described later, and the high purple is a representative of the later-described high-saturation purple region.

  As shown in Table 1, since the maximum illuminance Ev differs greatly depending on the color, the illuminance at the maximum output of each color was based on 1600 lux of high purple, and the illuminance of each color was adjusted to 1600 lux. The illuminance was measured at a vertical distance of 10 cm from the light emitting surface. However, since high blue can output only about 500 lux at the maximum, only high blue was set as the maximum output.

The evaluation items are the following 19 sets of adjective pairs and one optional answer. These adjective pairs included in addition to the general adjective pairs used in previous studies, as well as adjective pairs that are directly linked to actual uses and scenes. The evaluation method of each item of Nos. 1 to 19 uses the Semantic differential method (SD method), and the subject evaluated in seven stages of evaluation values −3 to +3 with the evaluation value 0 being “None”. . In the twentieth item, when there is something that is imaged or words when looking at the presented lighting space, it was filled in.
No. 1; Accepted-Unacceptable No. 2; Like-Dislike No. 3; Busy-Quiet No. 4; Light-Heavy No. 5; Dark-Bright No. 6; Relaxed-Tension No. 7; No. 8 that makes you sleep; No. 9 that makes you want to finish an activity-No. 9 that makes you want to start an activity; Neat-No. 10; Concentrate-Distracted No. 11; Futuristic 14; Natural-Artificial 15; Comfortable-Discomfort 16; Warm-Cold 17; Innovative-Ordinary 18; Narrow-Wide 19; Ridiculous-Ridiculous-20 Something you can imagine (optional answer)

  The subjects SP were 6 people in total, 3 Japanese men in their 20s and 3 females.

  The experimental procedure is as follows. The subject SP is provided with an instruction sheet having an experimental procedure column for explaining the next experimental procedure and an entry column for entering the evaluation value of each item to explain the experiment. Thereafter, the subject SP enters the non-illuminated experimental booth and waits for one minute with his eyes closed. After the experimenter's signal, the subject SP observes the illumination space presented in the experiment booth for 30 seconds, and after the experimenter's signal, writes the evaluation of each item on the evaluation sheet. Upon completion of the entry, the subject SP responds to the experimenter, and the experimenter turns off the illumination light. Thereafter, the subject SP closes his eyes and stands by with his eyes closed, and after 10 seconds, observes the illumination space presented in the experimental booth under the following illumination conditions. Thereafter, the same procedure is repeated for all illumination conditions. The experiment was performed by dividing 210 lighting conditions into three sets as described above, and the required time per set was about 2 hours. Up to three people were tested simultaneously per experiment.

  The experimental results are shown in bubble charts in FIGS. In these bubble charts, the horizontal direction indicates the hue of the first light emitted in the forward direction (the floor side on the wall surface of the radiation angle region), and the vertical direction indicates the upward direction (the ceiling on the wall surface of the radiation angle region). The hue of the second light emitted on the side) is shown, and at the intersection, the evaluation value when the first light of the horizontal hue and the second light of the vertical hue are emitted into the experimental booth is ○ Is shown in the size of ○ represents a positive value (+1 to +3), and ● represents a negative value (−1 to −3). For example, the largest circle is +3, and the largest circle is -3. The evaluation value is an average value of six subjects.

  FIG. 11 shows the experimental results relating to the first evaluation item “accepted-not accepted”. In FIG. 11, when accepted, the evaluation value becomes a positive evaluation value, and the evaluation value is represented by ◯. When not accepted, the evaluation value becomes a negative evaluation value, and the evaluation value is represented by ●. FIG. 12 shows the experimental results regarding the fifteenth evaluation item “No. 15; comfort-discomfort”. In FIG. 12, when comfortable, the evaluation value is positive, and the evaluation value is represented by ○, and when uncomfortable, the evaluation value is negative, and the evaluation value is represented by ●. . FIG. 13 shows the experimental results regarding the sixth evaluation item “Relaxed-Tensioned”. In FIG. 13, when the person is relaxed, the evaluation value becomes a positive evaluation value, and the evaluation value is represented by “◯”. FIG. 14 shows the experimental results regarding the ninth evaluation item “Neat-Donyori”. In FIG. 14, when it is clear, it becomes a positive evaluation value, and the evaluation value is represented by ◯. When it is overcast, it becomes a negative evaluation value, and the evaluation value is represented by ●. FIG. 15 shows an experimental result regarding the tenth evaluation item “concentrate-distract”. In FIG. 15, when the user can concentrate, the evaluation value becomes a positive evaluation value, and the evaluation value is indicated by ◯. When distracted, the evaluation value becomes a negative evaluation value, and the evaluation value is indicated by ●. FIG. 16 and FIG. 17 show the experimental results relating to the seventh evaluation item “Wake up-become sleepy”. In FIG. 16 and FIG. 17, when sleepiness is awakened, the evaluation value is positive, and the evaluation value is represented by ○, and when sleepiness is obtained, the evaluation value is negative, and the evaluation value is represented by ●. Is done.

  And based on these, in order to contrast each psychological effect with respect to the same illumination condition, Example 1 thru | or Example 6 and a comparative example were selected, and the result is shown in Table 2.

  In the first embodiment, the hue of the first light emitted in the forward direction (the floor side on the wall surface of the radiation angle region) is low blue-green, and the first light emitted in the upward direction (the ceiling side on the wall surface of the radiation angle region). 2 light hue is high blue, evaluation item "acceptable", evaluation item "comfort", evaluation item "relaxation", evaluation item "clean feeling", evaluation item "concentrate", evaluation item "sleeping" The evaluation values of the evaluation item “wake up sleepiness” are 1.6, 1.6, 2, 1.6, 1.1, −0.57, and 0.57, respectively.

  Therefore, the gradation lighting according to the first embodiment can give the person the most comfortable feeling, and if the gradation lighting according to the first embodiment is recognized as having a psychological effect with an evaluation value of 1 or more, the gradation lighting according to the first embodiment is comfortable to the person. It can give each psychological effect of feeling relaxed, refreshing and concentrating.

  In Example 2, the hue of the first light emitted in the forward direction is low yellow, the hue of the second light emitted in the upward direction is low blue, the evaluation item “accepted”, and the evaluation item “comfortable” The evaluation values of “feeling”, evaluation item “relaxation”, evaluation item “clean feeling”, evaluation item “concentrate”, evaluation item “sleeping” and evaluation item “wake up sleepiness” are 1.43, 1 .1, 1.1, 1, 1, -0.29 and 0.29.

  Therefore, the gradation lighting of the second embodiment can give the most acceptable feeling to the person, and if it is recognized that there is a psychological effect with an evaluation value of 1 or more, the gradation lighting of the second embodiment is comfortable and acceptable to the person. Each psychological effect of feeling, relaxing, refreshing and concentrating can be given.

  In Example 3, the hue of the first light emitted in the forward direction is high yellow, the hue of the second light emitted in the upward direction is low blue, the evaluation item “accepted”, and the evaluation item “comfortable” The evaluation values of the evaluation item “feeling of relaxation”, the evaluation item “refreshing feeling”, the evaluation item “concentration”, the evaluation item “sleeping” and the evaluation item “waking up sleepiness” are 1.1, 1, respectively. .1, 1.6, 1, 0.57, -0.14 and 0.14.

  Therefore, if the gradation lighting of Example 3 can give the person the most comfortable feeling and if it is recognized that there is a psychological effect with an evaluation value of 1 or more, the gradation lighting of Example 3 is acceptable to the person and is comfortable. Each psychological effect of feeling relaxed and refreshing can be provided.

  In Example 4, the hue of the first light emitted in the forward direction is low blue, the hue of the second light emitted in the upward direction is high yellow, the evaluation item “accepted”, and the evaluation item “comfortable” The evaluation values of “feel”, evaluation item “relaxation”, evaluation item “clean feeling”, evaluation item “concentrate”, evaluation item “sleeping” and evaluation item “wake up sleepiness” are 1.7, 1, respectively. .1, 1.1, 0.57, 0.85, -0.42 and 0.42.

  Therefore, the gradation lighting of Example 4 can give the most acceptable feeling to a person, and if it is recognized that there is a psychological effect with an evaluation value of 1 or more, the gradation lighting of Example 4 is comfortable and acceptable to the person. Each psychological effect of feeling and relaxation can be given.

  In Example 5, the hue of the first light emitted in the forward direction is high purple, the hue of the second light emitted in the upward direction is high red, the evaluation item “accepted”, and the evaluation item “comfortable” The evaluation values of “feeling”, evaluation item “relaxation”, evaluation item “clean feeling”, evaluation item “concentrate”, evaluation item “sleeping” and evaluation item “wake up sleepiness” are −2, −1, respectively. .9, -1.9, -0.29, -2, -2 and 2.

  Therefore, if the gradation lighting of the fifth embodiment is recognized as having a psychological effect with an evaluation value of 1 or more, it can give each person a psychological effect of waking up sleepiness.

  In Example 6, the hue of the first light emitted in the forward direction is low red, and the hue of the second light emitted in the upward direction is high blue-green, and the evaluation item “accepted” and the evaluation item “ The evaluation values of “comfort”, evaluation item “relaxation”, evaluation item “clean feeling”, evaluation item “concentrate”, evaluation item “sleeping” and evaluation item “wake up sleepiness” are 1, 1, 0.86, 0.14, 0.29, 1.29 and -1.29.

  Therefore, if the gradation lighting of the sixth embodiment is recognized as having a psychological effect with an evaluation value of 1 or more, it can give a person each psychological effect such as comfort and sleep falling that is acceptable.

  In contrast, in Comparative Example 1, the hue of the first light emitted in the forward direction is high purple, the hue of the second light emitted in the upward direction is low green, and the evaluation item “accepted”. The evaluation values of the evaluation item “comfort”, the evaluation item “relaxation”, the evaluation item “clean feeling”, the evaluation item “concentrate” and the evaluation item “wake up sleepiness” are −0.85 and −1, respectively. .4, -0.86, -1.1, -0.71 and -0.71.

  Therefore, if the gradation lighting of Comparative Example 1 is recognized as having a psychological effect with an evaluation value of 1 or more, no psychological effect can be given to a person.

  In Examples 1 to 6 and Comparative Example 1, the center of the field of view is the forward direction (an example of a first region that is part of the radiation angle region), and the periphery of the field of view is the upward direction (the first region). And an example of a second region that is a part of the radiation angle region.

  From the above result, in order to perform gradation illumination of the radiation angle region with light accepted by a person, the control unit 2 of the illumination device LDa determines the maximum saturation of the first and second lights irradiated on the radiation angle region. In the CIE 1976 u′v ′ chromaticity diagram, the chromaticity range of the light becomes (u ′, v ′) coordinate points R_4 (0.440, 0.506), R-OR_4 (0.419, 0.521). , OR_4 (0.398, 0.537), OR-Y_4 (0.302, 0.549), Y_4 (0.237, 0.557), Y-G_4 (0.204, 0.559), G_4 (0.085, 0.568), G-BG_4 (0.098, 0.483), BG_4 (0.112, 0.398), BG-B_4 (0.122, 0.361), B_4 (0 .173, 0.169), BP_4 (0 245, 0.230), P_4 (0.317, 0.291), P-R_4 (0.379, 0.398), and an upper limit boundary closed loop line obtained by connecting the points (u ′, v ') Coordinate points R_1 (0.268, 0.482), R-OR_1 (0.262, 0.485), OR_1 (0.257, 0.489), OR-Y_1 (0.233, 0. 492), Y_1 (0.217, 0.494), Y-G_1 (0.209, 0.495), G_1 (0.179, 0.497), G-BG_1 (0.182, 0.476). , BG_1 (0.186, 0.455), BG-B_1 (0.188, 0.445), B_1 (0.201, 0.397), B-P_1 (0.219, 0.413), P_1 (0.237, 0.428), P-R_1 (0.2 2, 0.455), the first and second LED light sources 10-1 and 10-2 are controlled so as to be included in the first chromaticity region between the lower limit boundary closed loop line obtained by connecting the respective points. That's fine. Such an illuminating device LDa provides suitable illumination that is psychologically acceptable to a person who is in an environment of illumination light and who is in an environment of illumination light even when a desired hue combination is arbitrarily selected. it can.

  In addition, in order to perform gradation illumination of the radiation angle region with light that gives a comfortable feeling to the person, the control unit 2 of the illumination device LDa includes first light that is applied to a first region of a part of the radiation angle region, and In the CIE 1976 u′v ′ chromaticity diagram, the second light irradiated to a part of the second region of the radiation angle region different from the first region is included in the first chromaticity region (2A) to (2A) to The first and second LED light sources 10-1 and 10-2 may be controlled so as to satisfy any one of the conditions (2M). Such an illuminating device LDa can suitably give a psychological effect of comfort to a person who is in an environment of illumination light.

  The condition (2A) is that the first light irradiated to the first region is included in a white region defined by the following, and the second light irradiated to the second region is defined by the following low color Low blue area, Low chroma blue area, Low chroma green area, Low chroma yellow area, Low chroma orange area, Low chroma red area, Low chroma purple area, High chroma blue area, High chroma blue area, It is included in any one of the high saturation green region, the high saturation yellow region, the high saturation orange region, the high saturation red region, and the high saturation purple region. Condition (2B) is that the first light irradiated to the first region is included in the low saturation blue region defined by the following, and the second light irradiated to the second region is defined by the following: White area, low saturation blue-green area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue area, high saturation blue green area, It is included in any one of the high saturation green region, the high saturation yellow region, the high saturation orange region, the high saturation red region, and the high saturation purple region. Condition (2C) is that the first light irradiated to the first region is included in a low-saturation blue-green region defined by the following, and the second light irradiated to the second region is defined by the following White area, low saturation blue area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue area, high saturation blue green area, It is included in any one of the high saturation green region, the high saturation yellow region, the high saturation orange region, the high saturation red region, and the high saturation purple region. The condition (2D) is that the first light irradiated to the first region is included in the low-saturation green region defined by the following, and the second light irradiated to the second region is defined by the following: White area, low saturation blue area, low saturation blue green area, low saturation yellow area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue area, high saturation blue green area, It is included in any one of the high saturation green region, the high saturation yellow region, the high saturation orange region, the high saturation red region, and the high saturation purple region. Condition (2E) is that the first light irradiated to the first region is included in the low saturation yellow region defined by the following, and the second light irradiated to the second region is defined by the following: White area, low saturation blue area, low saturation blue-green area, low saturation green area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue area, high saturation blue green area, It is included in any one of the high saturation green region, the high saturation yellow region, the high saturation orange region, the high saturation red region, and the high saturation purple region. Condition (2F) is that the first light irradiated to the first region is included in the low-saturation orange region defined by the following, and the second light irradiated to the second region is defined by the following: White area, low saturation blue area, low saturation blue green area, low saturation green area, low saturation yellow area, low saturation red area, low saturation purple area, high saturation blue area, high saturation blue green area, It is included in any one of the high saturation green region, the high saturation yellow region, the high saturation orange region, the high saturation red region, and the high saturation purple region. Condition (2G) is that the first light irradiated to the first region is included in the low saturation red region defined by the following, and the second light irradiated to the second region is defined by the following: White area, low saturation blue area, low saturation blue green area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation purple area, high saturation blue area, high saturation blue green area, It is included in any one of the high saturation green region, the high saturation yellow region, the high saturation orange region, the high saturation red region, and the high saturation purple region. Condition (2H) is that the first light irradiated to the first region is included in the low-saturation purple region defined by the following, and the second light irradiated to the second region is defined by the following: White area, low saturation blue area, low saturation blue green area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, high saturation blue area, high saturation blue green area, It is included in any one of the high saturation green region, the high saturation yellow region, the high saturation orange region, the high saturation red region, and the high saturation purple region. Condition (2I) is that the first light irradiated to the first region is included in a high saturation blue region defined by the following, and the second light irradiated to the second region is defined by the following white Area, low saturation blue area, low saturation blue green area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue green area, It is included in any one of the high saturation green region, the high saturation yellow region, the high saturation orange region, the high saturation red region, and the high saturation purple region. Condition (2J) is that the first light irradiated on the first region is included in a high-saturation blue-green region defined by the following, and the second light irradiated on the second region is defined by the following: White area, Low chroma blue area, Low chroma blue area, Low chroma green area, Low chroma yellow area, Low chroma orange area, Low chroma red area, Low chroma purple area, High chroma blue area, It is included in any one of the high saturation green region, the high saturation yellow region, the high saturation orange region, the high saturation red region, and the high saturation purple region. Condition (2K) is that the first light irradiated to the first region is included in a high-saturation green region defined by the following, and the second light irradiated to the second region is defined by the following white Area, low saturation blue area, low saturation blue green area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue area, high saturation It is included in each of the blue-green region, the high saturation yellow region, the high saturation orange region, the high saturation red region, and the high saturation purple region. Condition (2L) is that the first light irradiated to the first region is included in a high saturation yellow region defined by the following, and the second light irradiated to the second region is defined by the following white Area, low saturation blue area, low saturation blue green area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue area, high saturation It is included in each of the blue-green region, high-saturation green region, high-saturation orange region, high-saturation red region, and high-saturation purple region. Condition (2M) is that the first light irradiated to the first region is included in a high-saturation orange region defined by the following, and the second light irradiated to the second region is defined by the following white Area, low saturation blue area, low saturation blue green area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue area, high saturation It is included in each of the blue-green region, the high-saturation green region, the high-saturation yellow region, the high-saturation red region, and the high-saturation purple region.

  That is, in the forward direction (an example of a first region that is a part of the radiation angle region) that is the center of the visual field, unpleasant illumination light in the high saturation blue region and the high saturation red region should be avoided. However, in the upward direction (an example of a second region that is part of the radiation angle region different from the first region), which is around the visual field, a high-saturation blue region, It may be effective to use illumination light in the red region.

  In addition, in order to perform gradation illumination of the radiation angle region with light that gives a feeling of relaxation to the person, the control unit 2 of the illumination device LDa includes first light that is applied to a part of the first region of the radiation angle region, and In the CIE 1976 u′v ′ chromaticity diagram, the following second (3A) to (3A) to (B) are included in the CIE 1976 u′v ′ chromaticity diagram. The first and second LED light sources 10-1 and 10-2 may be controlled so as to satisfy any one of the conditions (3M). Such an illuminating device LDa can suitably give a psychological effect of a feeling of relaxation to a person who is in an environment of illumination light.

  The condition (3A) is that the first light irradiated to a part of the first region of the radiation angle region is included in a white region defined by the following, and is one of the radiation angle regions different from the first region. The second light emitted to the second region of the part is defined by the following: low saturation blue region, low saturation blue-green region, low saturation green region, low saturation red region, low saturation purple region, high saturation It is included in any one of the blue region, the high saturation blue-green region, the high saturation green region, and the high saturation yellow region, and the condition (3B) is that the first region irradiated to a part of the first radiation angle region The second light that is included in the low-saturation blue region defined by the following and is applied to the second region that is a part of the radiation angle region different from the first region is a low that is defined by the following Saturated blue-green region, low-saturated orange region, low-saturated red region, high-saturated blue region, high-saturated green region and The condition (3C) is that the first light applied to a part of the first region of the radiation angle region is defined by the following: The second light included in the green region and irradiated to a second region that is a part of the radiation angle region different from the first region is defined as a white region, a low saturation blue region, and a low saturation Green area, low chroma yellow area, low chroma orange area, low chroma red area, low chroma purple area, high chroma blue area, high chroma blue-green area, high chroma green area, high chroma yellow area, and high chroma orange area And the condition (3D) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low-saturation green region defined by: The second light applied to a second region of the radiation angle region different from the first region is White area, low saturation blue area, low saturation blue green area, low saturation yellow area, low saturation orange area, low saturation red area, high saturation blue area, high saturation blue green area and high saturation yellow The condition (3E) is that the first light applied to a part of the first region of the radiation angle region is in a low chroma yellow region defined by the following: A white region, a low saturation blue region, and a low saturation blue-green region, wherein the second light that is included and is applied to a part of the second region of the radiation angle region different from the first region is defined as follows: , Low saturation green area, low saturation orange area, low saturation purple area, high saturation blue area, high saturation blue green area, high saturation green area, high saturation orange area, and high saturation purple area. Yes, the condition (3F) is that the first light irradiated to a part of the first region of the radiation angle region is The second light that is included in the low-saturation orange region defined by the above and is applied to a second region of the radiation angle region that is different from the first region is a white region defined by the following: It is included in each of the saturation blue area, low saturation blue-green area, low saturation red area, low saturation purple area, high saturation blue area, high saturation blue green area, and high saturation green area. (3G) is the radiation angle region different from the first region, in which the first light irradiated to a part of the first region of the radiation angle region is included in the low saturation red region defined by the following: The second light emitted to a part of the second region is defined as follows: white region, low saturation blue region, low saturation blue-green region, low saturation yellow region, low saturation orange region, high saturation blue It is included in any of the green area, high chroma green area, and high chroma yellow area 3H) includes the first light irradiated to a part of the first region of the radiation angle region included in the low-saturation purple region defined by: The second light emitted to some of the second areas is included in any one of the low saturation blue area, the low saturation blue-green area, the low saturation red area, and the high saturation yellow area defined by the following: The condition (3I) is that the first light irradiated to a part of the first region of the radiation angle region is included in a high saturation blue region defined by the following, and is different from the first region: The second light irradiated to a second region that is a part of the radiation angle region is included in one of a white region and a high-saturation green region defined by the following, and the condition (3J) is the radiation The first light irradiated to a part of the first region of the angle region is as follows. The second light that is included in the defined high-saturation blue-green region and is irradiated to a second region that is a part of the radiation angle region different from the first region is a white region defined by the following: a low-saturation blue Area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue area, high saturation green area, and high saturation yellow area The condition (3K) is that the first light irradiated to a part of the first region of the radiation angle region is included in a high-saturation green region defined by: The second light irradiated to a part of the second region of the different radiation angle region is included in any one of the low saturation blue region and the high saturation blue region defined by the following, and the condition (3L ), The first light irradiated to a part of the first region of the radiation angle region is Therefore, the second light that is included in the high saturation yellow region defined and is irradiated to a part of the second region of the radiation angle region different from the first region is a low saturation blue region defined by the following: The condition (3M) is included in any one of the saturation blue-green region, the high saturation blue region, and the high saturation orange region, and the condition (3M) is the first light irradiated to a part of the first region of the radiation angle region Is included in the high-saturation orange region defined by the following, and the low-saturation blue region in which the second light irradiated to a second region of the radiation angle region different from the first region is defined by the following It is included in.

  Further, in order to perform gradation illumination of the radiation angle region with light that gives a clean feeling to the person, the control unit 2 of the illumination device LDa includes first light that is applied to a first region of a part of the radiation angle region, and In the CIE 1976 u′v ′ chromaticity diagram, the second light irradiated to a part of the second region of the radiation angle region different from the first region is included in the first chromaticity region (4A) to (4A) to The first and second LED light sources 10-1 and 10-2 may be controlled so as to satisfy any one of the conditions (4J). Such an illuminating device LDa can suitably give a psychological effect of a refreshing feeling to a person who is in an environment of illumination light.

  The condition (4A) is that a part of the radiation angle region different from the first region is included in the defined white region where the first light irradiated to a part of the first region of the radiation angle region is included. The second light emitted to the second region is included in any one of the defined low-saturation blue region, high-saturation blue region, high-saturation blue-green region, high-saturation green region, and high-saturation purple region. The condition (4B) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined low saturation blue region and the radiation angle is different from the first region. The second light emitted to the second region which is a part of the region is included in any of the defined low saturation blue-green region, high saturation blue region, high saturation blue-green region and high saturation yellow region. Yes, the condition (4C) is that the first region irradiated to a part of the first region of the radiation angle region is A second region of light that is included in the defined low-saturation blue-green region and that is irradiated to a second region of a part of the radiation angle region that is different from the first region; Included in one of the following areas: low saturation blue area, low saturation green area, low saturation yellow area, low saturation purple area, high saturation blue area, high saturation blue green area, high saturation green area, and high saturation yellow area The condition (4D) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined low-saturation green region and is different from the first region. The second light applied to the second region that is a part of the radiation angle region is one of the defined white region, low saturation blue region, high saturation blue region, high saturation blue-green region, and high saturation purple region. And the condition (4E) is applied to the first region that is a part of the radiation angle region. The second light that is included in the defined low-saturation yellow region and is applied to a second region that is a part of the radiation angle region different from the first region is the defined low-saturation. Is included in any of the following areas: Blue Blue, Low Saturation Blue Green, Low Saturation Green, Low Saturation Purple, High Saturation Blue, High Saturation Blue Green, and High Saturation Green. 4F) is one of the radiation angle regions different from the first region, in which the first light irradiated to a first region of a part of the radiation angle region is included in the defined low-saturation purple region. The second light emitted to the second region of the part is included in any one of the defined low saturation blue region and low saturation blue-green region, and the condition (4G) The first light irradiated to a first region of a part of the radiation angle region is included in the defined high saturation blue region, and the first light The second light irradiated to a part of the second region of the radiation angle region different from the one region is included in any of the defined low-saturation green region and high-saturation green region, and the condition (4H) is one of the radiation angle regions different from the first region, in which the first light irradiated to a part of the first region of the radiation angle region is included in the defined high saturation blue-green region. The second light emitted to the second region of the part is defined as the white region, the low saturation blue region, the low saturation blue-green region, the low saturation green region, the low saturation yellow region, and the low saturation orange region. , A low-saturation red region, a low-saturation purple region, a high-saturation green region, a high-saturation orange region, and a high-saturation red region, and the condition (4I) is a part of the radiation angle region The first light emitted to the first region is included in the defined high-saturation green region, and the first region The second light applied to a part of the second region of the radiation angle region is included in any of the defined low saturation blue region, high saturation blue region, high saturation blue-green region, and high saturation purple region. The condition (4J) is that the first light applied to a part of the first region of the radiation angle region is included in the defined high saturation yellow region and is different from the first region. The second light emitted to the second region that is a part of the radiation angle region is defined as the white region, the low saturation blue region, the low saturation blue-green region, the low saturation green region, the high saturation blue region, and the high saturation blue. It is included in each of the green region and the high saturation orange region.

  Further, in order to perform gradation illumination of the radiation angle region with light that can be concentrated on a person, the control unit 2 of the illumination device LDa includes the first light that is applied to a first region that is a part of the radiation angle region, and In the CIE 1976 u′v ′ chromaticity diagram, the second light irradiated to a part of the second region of the radiation angle region different from the first region is included in the first chromaticity region (5A) to (5L) below. The first and second LED light sources 10-1 and 10-2 may be controlled so as to satisfy any one of the following conditions. Such an illuminating device LDa can suitably give a psychological effect of being able to concentrate on a person who is in an environment of illumination light without being distracted.

  The condition (5A) is that a part of the radiation angle region that is different from the first region in which the first light irradiated to a part of the first region of the radiation angle region is included in the defined white region. The second light emitted to the second region of the low-saturation blue region, low-saturation blue-green region, low-saturation green region, low-saturation yellow region, high-saturation blue region, high-saturation blue-green region, The condition (5B) is that the first light irradiated to a part of the first region of the radiation angle region is defined as low as defined above. The second light included in the saturation blue region and irradiated to a second region that is a part of the radiation angle region different from the first region is the defined white region, low saturation blue-green region, low Saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, high saturation blue area, high saturation blue green area, high saturation green The condition (5C) is that the first light irradiated to a part of the first region of the radiation angle region is defined as the low saturation. Second light included in a blue-green region and irradiated to a second region of a part of the radiation angle region different from the first region is the defined white region, low chroma blue region, and low chroma It is included in one of the following areas: green area, low saturation yellow area, low saturation purple area, high saturation blue area, high saturation blue green area, high saturation green area, high saturation yellow area, and high saturation purple area. 5D) is an example of one of the radiation angle regions different from the first region, in which the first light irradiated to a part of the first region of the radiation angle region is included in the defined low-saturation green region. The second light emitted to the second region of the part is defined as the white region, the low saturation blue region, and the high saturation. And the condition (5E) is that the first light irradiated to a part of the first area of the radiation angle area is the low color defined above. The second light that is included in the degree yellow region and is applied to a part of the second region of the radiation angle region different from the first region is the defined white region, low chroma blue region, and low chroma A blue-green region, a low-saturation red region, a high-saturation blue region, a high-saturation blue-green region, a high-saturation green region, and a high-saturation red region, and the condition (5F) The first light irradiated to a part of the first region is included in the defined low-saturation orange region and is applied to a part of the second region of the radiation angle region different from the first region. The second light is the defined low saturation blue region, high saturation blue region, high saturation blue-green region and high saturation yellow. The condition (5G) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined low saturation red region. And the second light applied to a part of the second region of the radiation angle region different from the first region is included in any one of the defined white region and high saturation yellow region. Yes, the condition (5H) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined low-saturation purple region and is different from the first region. The second light irradiated to the second region that is a part of the angular region is included in the defined high saturation blue region, and the condition (5I) is that the first region that is a part of the radiation angle region is irradiated The first light is included in the defined high saturation blue region and is different from the first region. Each region of the defined white region, the low saturation green region, the low saturation yellow region, the low saturation orange region, and the high saturation yellow region when the second light irradiated to a part of the second region of the radiation angle region And the condition (5J) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined high-saturation blue-green region, and The second light emitted to a second region that is a part of the radiation angle region different from the first region is the defined white region, low chroma blue region, low chroma green region, low chroma green region, low A saturation yellow region, a low saturation orange region, a low saturation purple region, a high saturation blue region, and a high saturation yellow region, and the condition (5K) is a part of the radiation angle region The first light irradiated to the first region is included in the defined high-saturation green region and is different from the first region The second light applied to a second region of the radiation angle region is included in the defined high saturation blue region, and the condition (5L) is a first region of the radiation angle region. The second light irradiated to the second region which is included in the defined high saturation yellow region and is part of the radiation angle region different from the first region is defined as It is included in any one of the low saturation blue region, the high saturation blue region, and the high saturation blue-green region.

  In addition, in order to perform gradation illumination of the radiation angle region with light that is likely to fall asleep to a person, the control unit 2 of the illumination device LDa includes a first light that is applied to a first region of a part of the radiation angle region, and In the CIE 1976 u′v ′ chromaticity diagram, the second light applied to a part of the second region of the radiation angle region different from the first region is included in the first chromaticity region (6A) to ( The first and second LED light sources 10-1 and 10-2 may be controlled so as to satisfy any one of the conditions 6N). Such an illuminating device LDa can suitably give a psychological effect of sleepiness to a person who is in an environment of illumination light.

  The condition (6A) is that the first light irradiated to a part of the first region of the radiation angle region is included in a white region defined by the following, and is one of the radiation angle regions different from the first region. The second light emitted to the second region of the area is defined by the following: low saturation green region, low saturation yellow region, low saturation orange region, low saturation red region, low saturation purple region, high saturation blue The condition (6B) is that the first light irradiated to a part of the first region of the radiation angle region is defined by the following: The second light included in the saturation blue region and irradiated to a second region of the radiation angle region that is different from the first region is a white region defined by the following, a low saturation blue-green region, Low chroma green area, low chroma yellow area, low chroma red area, low chroma purple area, high chroma blue-green area, high chroma And the condition (6C) is that the first light emitted to a part of the first region of the radiation angle region is included in any one of the region, the high saturation yellow region, the high saturation orange region, and the high saturation red region. Is included in the low-saturation blue-green region defined by the following, and the second light emitted to a second region of the radiation angle region different from the first region is defined by the following Yellow area, low chroma orange area, low chroma purple area, high chroma orange area, high chroma red area, and high chroma purple area, and the condition (6D) is the radiation angle area The first light irradiated to a part of the first region is included in a low-saturation green region defined by the following, and is applied to a part of the second region of the radiation angle region different from the first region Low saturation blue-green region, low saturation defined by A region, a high-saturation blue-green region, and a high-saturation red region, and the condition (6E) is that the first light irradiated to a part of the first region of the radiation angle region is as follows: A low-saturation green region in which the second light included in the defined low-saturation yellow region and applied to a second region of the radiation angle region different from the first region is defined by: The low saturation orange region, the low saturation red region, the high saturation blue region, the high saturation yellow region, and the high saturation orange region, and the condition (6F) is a part of the radiation angle region. The first light irradiated to the first region is included in the low-saturation orange region defined by the following, and the second light irradiated to a part of the second region of the radiation angle region different from the first region Low saturation blue area, low saturation blue-green area, low saturation green as defined by Region, a low saturation yellow region, a low saturation red region, a low saturation purple region, a high saturation blue region, and a high saturation yellow region, and the condition (6G) is the emission angle region The first light irradiated to a part of the first region is included in a low saturation red region defined by the following, and is applied to a part of the second region of the radiation angle region different from the first region The second light generated in the white region, low saturation blue region, low saturation blue-green region, low saturation green region, low saturation yellow region, low saturation orange region and high saturation blue-green region defined by The condition (6H) is that the first light irradiated to a part of the first region of the radiation angle region is included in the low-saturation purple region defined by the following. And the 2nd light irradiated to the 2nd field of a part of the radiation angle field different from the 1st field below is Included in any of the following areas: low saturation blue-green region, low saturation yellow region, low saturation orange region, low saturation red region, high saturation blue region, high saturation yellow region, and high saturation red region The condition (6I) is that the first light irradiated to a part of the first region of the radiation angle region is included in a high saturation blue region defined by the following, and is different from the first region: The second light applied to the second region that is a part of the radiation angle region is included in any of the white region, the low saturation green region, the low saturation orange region, and the high saturation orange region defined by the following. The condition (6J) is that the first light irradiated to a part of the first region of the radiation angle region is included in a high-saturation blue-green region defined by the following, and is different from the first region: The second light applied to a second region of a part of the radiation angle region is as follows. The condition (6K) is that the first light irradiated to a part of the first region of the radiation angle region is included in the high saturation green region defined by the following: And the second light irradiated to a part of the second region of the radiation angle region different from the first region is included in a high saturation red region defined by the following, and the condition (6L) is: The first light irradiated to the first region that is a part of the radiation angle region is included in the high saturation yellow region defined by the following, and the second region that is a part of the radiation angle region that is different from the first region Is included in any one of a white region, a low-saturation purple region, and a high-saturation orange region defined by the following. Condition (6M) The first light irradiated to the first region of the part is defined by The low-saturation blue region, the low-saturation blue, and the second light that is included in the high-saturation orange region and irradiated to a second region that is a part of the radiation angle region that is different from the first region. It is included in each of the green region, the low saturation yellow region, and the high saturation blue region, and the condition (6N) is that the first light irradiated to a part of the first region of the radiation angle region is The second light that is included in the high-saturation purple region defined by the following and is irradiated to a second region that is a part of the radiation angle region different from the first region is in the low-saturation green region defined by the following It is included.

  Further, in order to perform gradation illumination of the radiation angle region with the light that makes the person sleepy, the control unit 2 of the illumination device LDa includes the first and second lights irradiated to a part of the first region of the radiation angle region. In the CIE 1976 u′v ′ chromaticity diagram, the first and second lights irradiated to a part of the second region of the radiation angle region different from the first region are any of the following (7A) to (7I) The first and second LED light sources 10-1 and 10-2 may be controlled so as to satisfy the condition. Such an illuminating device LDa can suitably give a psychological effect of awakening sleepiness to a person in an environment of illumination light.

  The condition (7A) is that the first light irradiated to a part of the first region of the radiation angle region is included in a white region defined by the following, and is one of the radiation angle regions different from the first region. The second light irradiated to the second region of the part is included in the high saturation purple region defined by the following, and the condition (7B) is that the first region irradiated to a part of the first region of the radiation angle region is The second light that is included in the low-saturation blue-green region defined by the following and is applied to the second region that is part of the radiation angle region different from the first region is defined by the following: The condition (7C) is that the first light irradiated to a part of the first area of the radiation angle area is included in a low saturation red area defined by the following: Irradiating a second region of the radiation angle region different from the first region The second light is included in a high-saturation orange region defined by the following, and the condition (7D) is that the first light irradiated to a part of the first region of the radiation angle region is defined by The second light that is included in the low-saturation purple region and is applied to the second region that is part of the radiation angle region different from the first region is included in the high-saturation purple region defined by Yes, the condition (7E) is that the first light irradiated to a part of the first region of the radiation angle region is included in a high saturation green region defined by the following, and the radiation angle is different from the first region The second light emitted to the second region that is a part of the region is included in any of the low saturation yellow region, the low saturation red region, the high saturation yellow region, and the high saturation orange region defined by the following: And the condition (7F) is a part of the radiation angle region. The first light irradiated to one area is included in the high saturation yellow area defined by the following, and the second light irradiated to a part of the second area of the radiation angle area different from the first area is Is included in each of the high-saturation green region and the high-saturation red region defined by the condition (7G), and the condition (7G) is that the first light irradiated to a part of the first region of the radiation angle region is: A low-saturation purple region, a high-saturation region, defined by the following: the second light that is included in the high-saturation orange region defined by, and is irradiated to a second region that is part of the radiation angle region that is different from the first region. The condition (7H) is that the first light irradiated to a part of the first region of the radiation angle region is defined by the following: Included in the region and different from the first region. The second light applied to the second region of the radiation angle region is a low saturation orange region, a high saturation blue region, a high saturation green region, a high saturation yellow region, and a high saturation orange region defined by the following: The condition (7I) is that the first light irradiated to a part of the first region of the radiation angle region is included in a high-saturation purple region defined by: The second light irradiated to a part of the second region of the radiation angle region different from the one region is defined by the following low saturation blue region, low saturation blue-green region, low saturation yellow region, and low saturation It is included in any one of the purple region, the high saturation blue region, the high saturation yellow region, the high saturation orange region, and the high saturation red region.

  In the above description, each region is defined as follows. In FIG. 18, white areas are coordinate points R_1 (0.268, 0.482), R-OR_1 (0.262, 0.485), OR_1 (0.257, 0. 489), OR-Y_1 (0.233, 0.492), Y_1 (0.217, 0.494), Y-G_1 (0.209, 0.495), G_1 (0.179, 0.497). , G-BG_1 (0.182, 0.476), BG_1 (0.186, 0.455), BG-B_1 (0.188, 0.445), B_1 (0.201, 0.397), B -P_1 (0.219, 0.413), P_1 (0.237, 0.428), P_R_1 (0.252, 0.455) is an inner region surrounded by a closed loop line connecting the points.

  The low-saturation red region is represented by coordinate points R-OR_3 (0.367, 0.509), R_3 (0.382, 0.498), P-R_3 (0.336, 0) of (u ′, v ′). .417), P-R_1 (0.252, 0.455), R_1 (0.268, 0.482), and R-OR_1 (0.262, 0.485) are surrounded by a closed loop line. The inner area.

  The low-saturation orange region is represented by coordinate points OR-Y_3 (0.279, 0.530), OR_3 (0.351, 0.521), R-OR_3 (0.367, 0) of (u ′, v ′). .509), R-OR_1 (0.262, 0.485), OR_1 (0.257, 0.489), and OR-Y_1 (0.233, 0.492). The inner area.

  The low saturation yellow area is represented by coordinate points YG_3 (0.206, 0.538), Y_3 (0.231, 0.536), OR-Y_3 (0.279, 0) of (u ′, v ′). .530), OR-Y_1 (0.233, 0.492), Y_1 (0.217, 0.494), and Y-G_1 (0.209, 0.495) are surrounded by a closed loop line. The inner area.

  The low-saturation green regions are coordinate points G-BG_3 (0.126, 0.481), G_3 (0.116, 0.544), Y-G_3 (0.206, 0) of (u ′, v ′). .538), YG_1 (0.209, 0.495), G_1 (0.179, 0.497), and G-BG_1 (0.182, 0.476) are surrounded by a closed loop line. The inner area.

  The low-saturation blue-green regions are coordinate points BG-B_3 (0.144, 0.389), BG_3 (0.136, 0.417), G-BG_3 (0.126, 0.481), G-BG_1 (0.182, 0.476), BG_1 (0.186, 0.455), and BG-B_1 (0.188, 0.445). This is the inner area.

  The low-saturation blue regions are coordinate points BP_3 (0.236, 0.291), B_3 (0.182, 0.245), BG-B_3 (0.144, 0) of (u ′, v ′). .389), BG-B_1 (0.188, 0.445), B_1 (0.201, 0.397), and BP_1 (0.219, 0.413) are surrounded by a closed loop line. The inner area.

  The low-saturation purple areas are coordinate points P-R_3 (0.336, 0.417), P_3 (0.291, 0.336), and B-P_3 (0.236, 0) of (u ′, v ′). .291), BP_1 (0.219, 0.413), P_1 (0.237, 0.428), and P-R_1 (0.252, 0.455) are surrounded by a closed loop line. The inner area.

  The high saturation red region includes coordinate points R-OR_4 (0.419, 0.521), R_4 (0.440, 0.506), and P-R_4 (0.379, 0.398) of (u ′, v ′). ), P_R_3 (0.336, 0.417), R_3 (0.382, 0.498), and R-OR_3 (0.367, 0.509). It is.

  The high-saturation orange regions are coordinate points OR-Y_4 (0.302, 0.549), OR_4 (0.398, 0.537), R-OR_4 (0.419, 0.521) of (u ′, v ′). ), R-OR — 3 (0.367, 0.509), OR — 3 (0.351, 0.521), OR-Y — 3 (0.279, 0.530) It is.

  The high saturation yellow area includes coordinate points Y-G_4 (0.204, 0.559), Y_4 (0.237, 0.557), OR-Y_4 (0.302, 0.549) of (u ′, v ′). ), OR-Y_3 (0.279, 0.530), Y_3 (0.231, 0.536), YG_3 (0.206, 0.538), an inner region surrounded by a closed loop line connecting the points It is.

  The high-saturation green region includes coordinate points G-BG_4 (0.098, 0.483), G_4 (0.085, 0.568), Y-G_4 (0.204, 0.559) of (u ′, v ′). ), Y-G — 3 (0.206, 0.538), G — 3 (0.116, 0.544), G-BG — 3 (0.126, 0.481), an inner region surrounded by a closed loop line connecting the points It is.

  The high-saturation blue-green regions are coordinate points BG-B_4 (0.122, 0.361), BG_4 (0.112, 0.398), G-BG_4 (0.098, 0. 483), G-BG_3 (0.126, 0.481), BG_3 (0.136, 0.417), BG-B_3 (0.144, 0.389) and the inner side surrounded by a closed loop line connecting the points It is an area.

  The high-saturation blue region includes coordinate points BP_4 (0.245, 0.230), B_4 (0.173, 0.169), BG-B_4 (0.122, 0.361) of (u ′, v ′). ), BG-B_3 (0.144, 0.389), B_3 (0.182, 0.245), BP_3 (0.236, 0.291), and an inner region surrounded by a closed loop line connecting the points It is.

  The high-saturation purple regions are coordinate points P-R_4 (0.379, 0.398), P_4 (0.317, 0.291), and B-P_4 (0.245, 0.230) of (u ′, v ′). ), BP_3 (0.236, 0.291), P_3 (0.291, 0.336), P-R_3 (0.336, 0.417), the inner region surrounded by the closed loop line connecting the points It is.

(Lighting device of second and third aspects)
In the above-described embodiment, the lighting device LDa of the first mode shown in FIGS. 1 to 8 is used as the lighting device LD that realizes gradation lighting that gives a predetermined psychological effect, but the following second and third modes are used. The illumination devices LDb and LDc may be used.

  First, the illumination device LDb of the second aspect will be described. FIG. 19 is a perspective view showing an appearance of the illumination device of the second aspect in the embodiment. 20 is a cross-sectional perspective view showing the configuration of the illumination device of the second aspect taken along the cutting line CP shown in FIG. FIG. 21 is a partial cross-sectional view showing the configuration of the illumination device of the second aspect. FIG. 22 is a diagram for explaining an example when the lighting device of the second aspect is applied to a living room.

  The illumination device LDb of the second aspect is a desktop installation type illumination device LD. 19 to 21, the illumination device LDb according to the second aspect includes a first illumination unit LP1 for illuminating a table and a second illumination unit LP2 for performing gradation illumination that gives a predetermined psychological effect. It has the lighting part. The illumination device LDb includes a frame 100 formed of a cylindrical body having a rectangular cross section having an upper wall portion 100a, a lower wall portion 100b, and a pair of left and right side wall portions 100c and 100d that connect the upper wall portion 100a and the lower wall portion 100b. Is provided.

  A hollow substantially triangular prism-shaped pedestal portion 130 is provided on an inner surface of the lower wall portion 100b facing the inside of the frame 100. A control unit (not shown) for controlling the first and second illumination units LP1 and LP is disposed inside the pedestal unit 130, and three switch elements SW1 to SW3 are provided as input units on the main surface plate 131. It is arranged. The switch element SW1 is for turning on / off the first illumination unit LP1, the switch element SW2 is for turning on / off the second illumination unit LP2, and the switch element SW3 is a power switch of the illumination device LDb. is there. The unillustrated control unit controls gradation illumination of the second illumination unit LP2 so as to give a predetermined psychological effect set in advance.

  And on the inner surface which faces the inner side of the frame 100 in the upper wall portion 100a, the first illumination portion LP1 is disposed on the front side, and the second illumination portion LP2 is disposed on the rear side. The first illuminating unit LP1 extends from the front side to the rear side, and is inclined so as to gradually move away from the upper wall part 100a as it approaches the upper wall part 100a on the front side and goes to the rear side. Is provided. A light guide plate 103 is disposed on the reflection plate 104, and a white LED 101 disposed on the LED substrate 102 is incident on one end on the rear side of the light guide plate 103 from the side surface of the light guide plate 103. Is arranged. A cover member 105 is disposed on the entire surface of the light guide plate 103 with a predetermined space therebetween. In such a first illumination unit LP1, the white light emitted from the white LED 101 is reflected by the reflection plate 104 while being guided through the light guide plate 103, and the reflected light is radiated to the outside through the cover member 105. As shown in FIG. 22, the tabletop is illuminated. The 2nd illumination part LP2 is comprised similarly to the light source part 1 in the illuminating device LDa of a 1st aspect.

  That is, the second illumination unit LP2 includes a second illumination unit body 17b having a substantially prismatic shape that is long in one direction. The second illumination unit main body 17b is formed with a first recess 171b-1 that is formed from one side surface toward the inside and that is long along the one direction, and from the other side surface adjacent to the one side surface to the inside. A long second recess 171b-2 is formed along the one direction. Both side surfaces of the first recess 171b-1 have a curved shape that swells outward from the center of the first recess 171b-1, and the first bottom surface has a heat sink 15-1 made of, for example, aluminum. The 1st LED board 14-1 is arrange | positioned through this. On the first LED board 14-1, the plurality of daylight white LEDs 11-1, the plurality of light bulb color LEDs 12-1, and the plurality of RGB LEDs 13-1 are arranged in parallel along the one direction. That is, the first LED light source 10-1 is disposed on the first bottom surface of the first recess 171b-1. Similarly, both side surfaces of the second recess 171b-2 each have a curved shape that swells outward from the center of the second recess 171b-2. On the second bottom surface, for example, a heat sink made of aluminum A second LED substrate 14-2 is disposed via 15-2. On the second LED substrate 14-2, the plurality of daylight white LEDs 11-2, the plurality of light bulb color LEDs 12-2, and the plurality of RGB LEDs 13-2 are arranged in parallel along the one direction. That is, the second LED light source 10-2 is disposed on the second bottom surface of the second recess 171b-2. The first LED light source 10-1 and the second LED light source 10-2 are such that the first optical axis AX1 of the first LED light source 10-1 and the second optical axis AX2 of the second LED light source 10-2 intersect each other. The first and second recesses 171b-1 and 171b-2 are disposed respectively. For example, the first bottom surface of the first recess 171b-1 and the second bottom surface of the second recess 171b-2 are formed so as to cross each other at their extended surfaces. In this way, by causing the first optical axis AX1 and the second optical axis AX2 to cross each other, in a radiation angle region that is a predetermined distance away from the light source unit 1, a part of the first light and a part of the second light. Overlap each other, and gradation illumination is realized on the irradiated surface. Then, a plate-shaped cover having an L-shaped cross section extending in the one direction so as to close the vicinity of each opening of the first and second recesses 171b-1 and 171b-2 in the second illumination unit main body 17b. A member 16b is provided. The cover member 16b is formed of a material having translucency with respect to the first light emitted from the first LED light source 10-1 and the second light emitted from the second LED light source 10-2. In the second illuminating unit LP2, the first and second light emitted from the first and second LED light sources 10-1 and 10-2, as shown in FIG. Are emitted in such a manner that they overlap each other on the wall surface, so that the gradation illumination extends from the region of hue A by the first light to the region of hue B by the second light through the intermediate region of the intermediate colors of hue A and hue B. Can illuminate.

  Next, the illumination device LDc of the third aspect will be described. FIG. 23 is a perspective view illustrating an appearance of the illumination device of the third aspect in the embodiment. FIG. 24 is a side view showing the configuration of the illumination device of the third aspect. FIG. 24A is an overall side view, and FIG. 24B is a partial side view.

  The illumination device LDc of the third aspect is a ceiling installation type (radiation projection type) illumination device LD. 23 and 24, the illumination device LDc according to the third aspect includes a first illumination unit LP3 for illuminating a room and a second illumination unit LP4 for performing gradation illumination that gives a predetermined psychological effect. It has the lighting part. The illumination device LDc includes short and high first and second cylindrical portions 201b and 201d having different diameters, a disk-shaped top plate portion 201a that closes one opening of the first cylindrical portion 201b, and a first cylinder. From the peripheral edge of the other opening of the second cylindrical part 201d, the annular plate-like connecting part 201c that connects the peripheral part of the other opening of the cylindrical part 201b and the peripheral part of the one opening of the second cylindrical part 201d. A frame 201 having a flange portion 201e extending a predetermined length outward in the direction is provided. A so-called hook sealing plug 202 is disposed on the top plate 201a at a substantially central position. A plurality of white LEDs as the first illumination unit LP3 are arranged in parallel along the circumferential direction on the inner side surface of the top plate portion 201a and the inner side surface of the connecting portion 201d. The flange part 201e is provided with a cover member 203 so as to close the other opening of the second cylindrical part 201d. On the inner surface of the top plate portion 201a, a control unit (not shown) that controls gradation illumination of the second illumination unit LP4 is provided so as to give a predetermined psychological effect set in advance.

  And the connection part outer surface of the connection part 201c and the peripheral part of the one opening part of the 2nd cylindrical part 201d is an inclined surface. On the inclined surface, a plurality of RGB LEDs capable of emitting an arbitrary color are arranged along the circumferential direction as the first LED light source 18P of the second illumination unit PL4. A plurality of RGB LEDs capable of emitting an arbitrary color are disposed along the circumferential direction as the second LED light source 18B of the second illumination unit PL4 on the outer peripheral side surface of the second cylindrical portion 201d. In such a second illumination unit LP4, the first and second light emitted from the first and second LED light sources 18P and 18B are on the ceiling surface separated by a predetermined distance from the center position of the illumination device LDc, as shown in FIG. As shown in the figure, each of them overlaps, and the ceiling is lit with gradation illumination from the area of hue A by the first light to the area of hue B by the second light through the intermediate area of the intermediate colors of hue A and hue B. Can illuminate.

  The present specification discloses various aspects of the technology as described above, and the main technologies are summarized below.

  An illumination device according to an aspect includes first and second LED light sources capable of emitting a plurality of colors of light, and a part of the first light emitted from the first LED light source and the second LED light source. A light source unit that emits the first and second lights so that a part of the second light overlaps with each other in a radiation angle region, and the first and second lights that emit the first and second lights in different colors. A control unit that controls the second LED light source. Then, the control unit has a chromaticity range of the maximum saturation light of the first and second lights irradiated on the radiation angle region, in the CIE 1976 u′v ′ chromaticity diagram, (u ′, v ′). Coordinate points R_4 (0.440, 0.506), R-OR_4 (0.419, 0.521), OR_4 (0.398, 0.537), OR-Y_4 (0.302, 0.549), Y_4 (0.237, 0.557), Y-G_4 (0.204, 0.559), G_4 (0.085, 0.568), G-BG_4 (0.098, 0.483), BG_4 ( 0.112, 0.398), BG-B_4 (0.122, 0.361), B_4 (0.173, 0.169), BP_4 (0.245, 0.230), P_4 (0. 317, 0.291), P-R_4 (0.379, 0.398) An upper limit boundary closed loop line obtained by connecting the points, and coordinate points R_1 (0.268, 0.482), R-OR_1 (0.262, 0.485), OR_1 (u) of (u ′, v ′) 0.257, 0.489), OR-Y_1 (0.233, 0.492), Y_1 (0.217, 0.494), Y-G_1 (0.209, 0.495), G_1 (0. 179, 0.497), G-BG_1 (0.182, 0.476), BG_1 (0.186, 0.455), BG-B_1 (0.188, 0.445), B_1 (0.201, 0.397), B-P_1 (0.219, 0.413), P_1 (0.237, 0.428), and P-R_1 (0.252, 0.455). Included in the first chromaticity region between the lower boundary closed loop line So that the, for controlling the first and second 2LED light source.

  In such an illuminating device, the first and second lights emitted from the first and second LED light sources in different colors are emitted so that each part thereof overlaps each other in the radiation angle region. Can gradationally illuminate the radiation angle region. In the illumination device, since the first and second lights irradiated on the radiation angle region are included in the first chromaticity region, the radiation angle region can be gradationally illuminated with light received by a person. Therefore, the illuminating device can provide suitable illumination that is psychologically acceptable to a person who is in an environment of illumination light even when a desired hue combination is arbitrarily selected.

  In another aspect, in the above-described lighting device, the control unit includes a first light that is applied to a first region that is a part of the radiation angle region, and one of the radiation angle regions that is different from the first region. In the CIE 1976 u′v ′ chromaticity diagram, the second light emitted to the second region of the part satisfies the following conditions (2A) to (2M) included in the first chromaticity region: Control the first and second LED light sources.

  The condition (2A) is that the first light irradiated to the first region is included in a white region defined by the following, and the second light irradiated to the second region is defined by the following low color Low blue area, Low chroma blue area, Low chroma green area, Low chroma yellow area, Low chroma orange area, Low chroma red area, Low chroma purple area, High chroma blue area, High chroma blue area, It is included in any one of the high saturation green region, the high saturation yellow region, the high saturation orange region, the high saturation red region, and the high saturation purple region. Condition (2B) is that the first light irradiated to the first region is included in the low saturation blue region defined by the following, and the second light irradiated to the second region is defined by the following: White area, low saturation blue-green area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue area, high saturation blue green area, It is included in any one of the high saturation green region, the high saturation yellow region, the high saturation orange region, the high saturation red region, and the high saturation purple region. Condition (2C) is that the first light irradiated to the first region is included in a low-saturation blue-green region defined by the following, and the second light irradiated to the second region is defined by the following White area, low saturation blue area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue area, high saturation blue green area, It is included in any one of the high saturation green region, the high saturation yellow region, the high saturation orange region, the high saturation red region, and the high saturation purple region. The condition (2D) is that the first light irradiated to the first region is included in the low-saturation green region defined by the following, and the second light irradiated to the second region is defined by the following: White area, low saturation blue area, low saturation blue green area, low saturation yellow area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue area, high saturation blue green area, It is included in any one of the high saturation green region, the high saturation yellow region, the high saturation orange region, the high saturation red region, and the high saturation purple region. Condition (2E) is that the first light irradiated to the first region is included in the low saturation yellow region defined by the following, and the second light irradiated to the second region is defined by the following: White area, low saturation blue area, low saturation blue-green area, low saturation green area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue area, high saturation blue green area, It is included in any one of the high saturation green region, the high saturation yellow region, the high saturation orange region, the high saturation red region, and the high saturation purple region. Condition (2F) is that the first light irradiated to the first region is included in the low-saturation orange region defined by the following, and the second light irradiated to the second region is defined by the following: White area, low saturation blue area, low saturation blue green area, low saturation green area, low saturation yellow area, low saturation red area, low saturation purple area, high saturation blue area, high saturation blue green area, It is included in any one of the high saturation green region, the high saturation yellow region, the high saturation orange region, the high saturation red region, and the high saturation purple region. Condition (2G) is that the first light irradiated to the first region is included in the low saturation red region defined by the following, and the second light irradiated to the second region is defined by the following: White area, low saturation blue area, low saturation blue green area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation purple area, high saturation blue area, high saturation blue green area, It is included in any one of the high saturation green region, the high saturation yellow region, the high saturation orange region, the high saturation red region, and the high saturation purple region. Condition (2H) is that the first light irradiated to the first region is included in the low-saturation purple region defined by the following, and the second light irradiated to the second region is defined by the following: White area, low saturation blue area, low saturation blue green area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, high saturation blue area, high saturation blue green area, It is included in any one of the high saturation green region, the high saturation yellow region, the high saturation orange region, the high saturation red region, and the high saturation purple region. Condition (2I) is that the first light irradiated to the first region is included in a high saturation blue region defined by the following, and the second light irradiated to the second region is defined by the following white Area, low saturation blue area, low saturation blue green area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue green area, It is included in any one of the high saturation green region, the high saturation yellow region, the high saturation orange region, the high saturation red region, and the high saturation purple region. Condition (2J) is that the first light irradiated on the first region is included in a high-saturation blue-green region defined by the following, and the second light irradiated on the second region is defined by the following: White area, Low chroma blue area, Low chroma blue area, Low chroma green area, Low chroma yellow area, Low chroma orange area, Low chroma red area, Low chroma purple area, High chroma blue area, It is included in any one of the high saturation green region, the high saturation yellow region, the high saturation orange region, the high saturation red region, and the high saturation purple region. Condition (2K) is that the first light irradiated to the first region is included in a high-saturation green region defined by the following, and the second light irradiated to the second region is defined by the following white Area, low saturation blue area, low saturation blue green area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue area, high saturation It is included in each of the blue-green region, the high saturation yellow region, the high saturation orange region, the high saturation red region, and the high saturation purple region. Condition (2L) is that the first light irradiated to the first region is included in a high saturation yellow region defined by the following, and the second light irradiated to the second region is defined by the following white Area, low saturation blue area, low saturation blue green area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue area, high saturation It is included in each of the blue-green region, high-saturation green region, high-saturation orange region, high-saturation red region, and high-saturation purple region. Condition (2M) is that the first light irradiated to the first region is included in a high-saturation orange region defined by the following, and the second light irradiated to the second region is defined by the following white Area, low saturation blue area, low saturation blue green area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue area, high saturation It is included in each of the blue-green region, the high-saturation green region, the high-saturation yellow region, the high-saturation red region, and the high-saturation purple region.

  In such an illuminating device, the first and second lights satisfy any one of the above conditions (2A) to (2M), so that the radiation angle region can be gradationally illuminated with light that gives comfort to the person, A comfortable lighting environment can be provided even if a person spends a long time. Therefore, the illuminating device can suitably give a psychological effect of comfort to a person who is in an environment of illumination light.

  In another aspect, in the above-described lighting device, the control unit includes a first light that is applied to a first region that is a part of the radiation angle region, and one of the radiation angle regions that is different from the first region. In the CIE 1976 u′v ′ chromaticity diagram, the second light applied to the second region of the part satisfies the following conditions (3A) to (3M) included in the first chromaticity region: Control the first and second LED light sources.

  The condition (3A) is that the first light irradiated to a part of the first region of the radiation angle region is included in a white region defined by the following, and is one of the radiation angle regions different from the first region. The second light emitted to the second region of the part is defined by the following: low saturation blue region, low saturation blue-green region, low saturation green region, low saturation red region, low saturation purple region, high saturation It is included in each of the blue region, the high saturation blue-green region, the high saturation green region, and the high saturation yellow region. Condition (3B) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low saturation blue region defined by the following, and the radiation angle different from the first region The second light irradiated to the second region of a part of the region is defined by the following low saturation blue-green region, low saturation orange region, low saturation red region, high saturation blue region, high saturation green region and high saturation yellow It is included in any one of the areas. Condition (3C) is that the first light irradiated to a first region of a part of the radiation angle region is included in a low-saturation blue-green region defined by the following, and is different from the first region. The second light emitted to the second area that is a part of the angle area is defined by the following: white area, low saturation blue area, low saturation green area, low saturation yellow area, low saturation orange area, low It is included in any one of the regions of the saturation red region, the low saturation purple region, the high saturation blue region, the high saturation blue-green region, the high saturation green region, the high saturation yellow region, and the high saturation orange region. Condition (3D) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low-saturation green region defined by the following, and the radiation angle is different from the first region The second light emitted to the second region of a part of the region is defined as follows: white region, low saturation blue region, low saturation blue-green region, low saturation yellow region, low saturation orange region, low It is included in any one of the saturation red region, the high saturation blue region, the high saturation blue-green region, and the high saturation yellow region. Condition (3E) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low saturation yellow region defined by the following, and the radiation angle is different from the first region The second light emitted to the second region that is a part of the region is defined as follows: white region, low saturation blue region, low saturation blue-green region, low saturation green region, low saturation orange region, low It is included in any one of the saturation purple region, the high saturation blue region, the high saturation blue-green region, the high saturation green region, the high saturation orange region, and the high saturation purple region. Condition (3F) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low-saturation orange region defined by the following, and the radiation angle is different from the first region The second light emitted to the second region that is a part of the region is defined as follows: white region, low saturation blue region, low saturation blue-green region, low saturation red region, low saturation purple region, high saturation It is included in any of the blue region, the high saturation blue-green region, and the high saturation green region. Condition (3G) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low saturation red region defined by the following, and the radiation angle different from the first region The second light emitted to the second region that is part of the region is defined by the following: a white region, a low saturation blue region, a low saturation blue-green region, a low saturation yellow region, a low saturation orange region, and a high saturation It is included in any one of the blue-green region, the high-saturation green region, and the high-saturation yellow region. Condition (3H) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low-saturation purple region defined by the following, and the radiation angle is different from the first region The second light emitted to a second region that is a part of the region is one of the low saturation blue region, the low saturation blue-green region, the low saturation red region, and the high saturation yellow region defined by the following: It is included. Condition (3I) is that the first light irradiated to a part of the first region of the radiation angle region is included in a high saturation blue region defined by the following and the radiation angle region is different from the first region. The second light irradiated to some of the second regions is included in any of the white region and the high-saturation green region defined by the following. Condition (3J) is that the first light irradiated to a part of the first region of the radiation angle region is included in a high-saturation blue-green region defined by the following, and is different from the first region in the radiation angle region The second light irradiated to a part of the second region is defined as follows: white region, low chroma blue region, low chroma green region, low chroma yellow region, low chroma orange region, low chroma It is included in any of the red region, the low saturation purple region, the high saturation blue region, the high saturation green region, and the high saturation yellow region. The condition (3K) is that the first light irradiated to a part of the first region of the radiation angle region is included in the high saturation green region defined by the following, and the radiation angle region is different from the first region. The second light irradiated to a part of the second region is included in any of the low saturation blue region and the high saturation blue region defined by the following. Condition (3L) is that the first light irradiated to a part of the first region of the radiation angle region is included in the high saturation yellow region defined by the following, and the radiation angle region is different from the first region. The second light emitted to some of the second regions is included in any of the low saturation blue region, the low saturation blue-green region, the high saturation blue region, and the high saturation orange region defined by the following: is there. Condition (3M) is that the first light irradiated to a part of the first region of the radiation angle region is included in a high-saturation orange region defined by the following, and the radiation angle region is different from the first region. The second light irradiated to a part of the second region is included in the low saturation blue region defined by the following.

  In such an illuminating device, since the first and second lights satisfy any one of the above conditions (3A) to (3M), the radiation angle region is gradated with light that gives a person a feeling of relaxation (relaxation). Lighting can be provided, providing a lighting environment where people can relax. Therefore, the illuminating device can suitably give a psychological effect of a feeling of relaxation to a person who is in an environment of illumination light.

  In another aspect, in the above-described lighting device, the control unit includes a first light that is applied to a first region that is a part of the radiation angle region, and one of the radiation angle regions that is different from the first region. So that the second light emitted to the second region of the part satisfies the following conditions (4A) to (4J) included in the first chromaticity region in the CIE 1976 u′v ′ chromaticity diagram: Control the first and second LED light sources.

  The condition (4A) is that a part of the radiation angle region different from the first region is included in the defined white region where the first light irradiated to a part of the first region of the radiation angle region is included. The second light emitted to the second region is included in any one of the defined low-saturation blue region, high-saturation blue region, high-saturation blue-green region, high-saturation green region, and high-saturation purple region. . Condition (4B) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined low saturation blue region, and is different from the first region in the radiation angle region The second light emitted to a part of the second region is included in any of the defined low-saturation blue-green region, high-saturation blue region, high-saturation blue-green region, and high-saturation yellow region. . Condition (4C) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined low-saturation blue-green region and is different from the first region in the radiation angle The second light emitted to the second region that is a part of the region is defined as the white region, the low saturation blue region, the low saturation green region, the low saturation yellow region, the low saturation purple region, and the high saturation blue region. The high saturation blue-green region, the high saturation green region, and the high saturation yellow region are included in any one of the regions. The condition (4D) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined low-saturation green region and is different from the first region in the radiation angle region The second light emitted to a part of the second region is included in any of the defined white region, low saturation blue region, high saturation blue region, high saturation blue-green region, and high saturation purple region. It is. The condition (4E) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined low saturation yellow region, and the radiation angle region is different from the first region. The second light irradiated to a part of the second region is defined as the low saturation blue region, the low saturation blue-green region, the low saturation green region, the low saturation purple region, the high saturation blue region, and the high saturation blue. It is included in each of the green region and the high saturation green region. Condition (4F) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined low-saturation purple region, and is different from the first region in the radiation angle region The second light emitted to a part of the second region is included in each of the defined low saturation blue region and low saturation blue-green region. Condition (4G) is that the first light applied to a part of the first region of the radiation angle region is included in the defined high saturation blue region and is different from the first region in the radiation angle region. 2nd light irradiated to the 2nd area | region of a part is contained in either of each area | region of the said low chroma green area | region and the high chroma green area | region defined. Condition (4H) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined high-saturation blue-green region, and the radiation angle region is different from the first region. The second light emitted to some of the second areas is the defined white area, low chroma blue area, low chroma blue green area, low chroma green area, low chroma yellow area, and low chroma orange. It is included in any one of the region, the low saturation red region, the low saturation purple region, the high saturation green region, the high saturation orange region, and the high saturation red region. Condition (4I) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined high-saturation green region, and one of the radiation angle regions different from the first region. 2nd light irradiated to the 2nd field of a part is contained in each field of each of the above-mentioned low chroma blue field, high chroma blue field, high chroma blue green field, and high chroma purple field. Condition (4J) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined high saturation yellow region, and one of the radiation angle regions different from the first region. The second light emitted to the second region of the section is defined as the white region, the low saturation blue region, the low saturation blue-green region, the low saturation green region, the high saturation blue region, the high saturation blue-green region, and the high saturation orange. It is included in any one of the areas.

  In such an illuminating device, since the first and second lights satisfy any one of the above conditions (4A) to (4J), the radiation angle area can be gradationally illuminated with light that gives a person a clean feeling, Can provide a refreshing lighting environment with a refreshing feeling. Therefore, the illuminating device can suitably give a psychological effect of a refreshing feeling to a person who is in an environment of illumination light.

  In another aspect, in the above-described lighting device, the control unit includes a first light that is applied to a first region that is a part of the radiation angle region, and one of the radiation angle regions that is different from the first region. In the CIE 1976 u′v ′ chromaticity diagram, the second light emitted to the second region of the part satisfies the following conditions (5A) to (5L) included in the first chromaticity region: Control the first and second LED light sources.

  The condition (5A) is that a part of the radiation angle region that is different from the first region in which the first light irradiated to a part of the first region of the radiation angle region is included in the defined white region. The second light emitted to the second region of the low-saturation blue region, low-saturation blue-green region, low-saturation green region, low-saturation yellow region, high-saturation blue region, high-saturation blue-green region, It is included in each of the high saturation green region and the high saturation yellow region. The condition (5B) is that the first light emitted to a part of the first region of the radiation angle region is included in the defined low-saturation blue region and is different from the first region in the radiation angle region The second light irradiated to a part of the second region is defined as the white region, the low saturation blue-green region, the low saturation green region, the low saturation yellow region, the low saturation orange region, and the low saturation. It is included in any of the red region, the high saturation blue region, the high saturation blue-green region, the high saturation green region, and the high saturation yellow region. Condition (5C) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined low saturation blue-green region and is different from the first region in the radiation angle The second light emitted to the second region that is a part of the region is defined as the white region, the low saturation blue region, the low saturation green region, the low saturation yellow region, the low saturation purple region, and the high saturation blue region. The high saturation blue-green region, the high saturation green region, the high saturation yellow region, and the high saturation purple region. The condition (5D) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined low-saturation green region and is different from the first region in the radiation angle region The second light emitted to a part of the second region is included in any one of the defined white region, low saturation blue region, high saturation blue region, and high saturation blue-green region. Condition (5E) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined low saturation yellow region, and is different from the first region in the radiation angle region The second light irradiated to a part of the second region is defined as a white region, a low saturation blue region, a low saturation blue-green region, a low saturation red region, a high saturation blue region, a high saturation blue-green region, It is included in any one of the high saturation green region and the high saturation red region. The condition (5F) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined low-saturation orange region and is different from the first region in the radiation angle region The second light emitted to a part of the second region is included in any one of the defined low saturation blue region, high saturation blue region, high saturation blue-green region, and high saturation yellow region. The condition (5G) is that the first light irradiated on a part of the first region of the radiation angle region is included in the defined low saturation red region and is different from the first region in the radiation angle region The second light emitted to a part of the second region is included in any of the defined white region and high saturation yellow region. The condition (5H) is that the first light irradiated on a part of the first region of the radiation angle region is included in the defined low-saturation purple region and is different from the first region in the radiation angle region The second light emitted to a part of the second region is included in the defined high saturation blue region. Condition (5I) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined high-saturation blue region, and one of the radiation angle regions different from the first region. The second light emitted to the second region of the portion is included in any of the defined white region, low saturation green region, low saturation yellow region, low saturation orange region, and high saturation yellow region That is. Condition (5J) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined high-saturation blue-green region and the radiation angle region is different from the first region. The second light emitted to some of the second areas is the defined white area, low saturation blue area, low saturation green area, low saturation green area, low saturation yellow area, and low saturation orange area. , A low saturation purple region, a high saturation blue region, and a high saturation yellow region. The condition (5K) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined high-saturation green region, and one of the radiation angle regions different from the first region. The second light irradiated to the second region of the part is included in the defined high saturation blue region. The condition (5L) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined high saturation yellow region, and is one of the radiation angle regions different from the first region. 2nd light irradiated to the 2nd area | region of a part is contained in either of each area | region of the said low chroma blue area | region, a high chroma blue area | region, and a high chroma blue green area | region.

  In such an illuminating device, the first and second lights satisfy any one of the above conditions (5A) to (5L). Provide a lighting environment that can be concentrated. Therefore, the illuminating device can suitably give a psychological effect of being able to concentrate without being distracted to a person who is in an environment of illumination light.

  In another aspect, in the above-described lighting device, the control unit includes a first light that is applied to a first region that is a part of the radiation angle region, and one of the radiation angle regions different from the first region. In the CIE 1976 u′v ′ chromaticity diagram, the second light applied to the second region of the part satisfies the following conditions (6A) to (6N) included in the first chromaticity region: Control the first and second LED light sources.

  The condition (6A) is that the first light irradiated to a part of the first region of the radiation angle region is included in a white region defined by the following, and is one of the radiation angle regions different from the first region. The second light emitted to the second region of the area is defined by the following: low saturation green region, low saturation yellow region, low saturation orange region, low saturation red region, low saturation purple region, high saturation blue It is included in each of the green region and the high saturation yellow region. Condition (6B) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low saturation blue region defined by the following and the radiation angle is different from the first region The second light emitted to the second region that is part of the region is defined by the following: a white region, a low saturation blue-green region, a low saturation green region, a low saturation yellow region, a low saturation red region, a low It is included in each of the saturation purple region, the high saturation blue-green region, the high saturation green region, the high saturation yellow region, the high saturation orange region, and the high saturation red region. Condition (6C) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low-saturation blue-green region defined by the following and is different from the first region. The second light applied to the second region of the angular region is defined by the following low saturation yellow region, low saturation orange region, low saturation purple region, high saturation orange region, high saturation red region, and high saturation purple. It is included in any one of the areas. Condition (6D) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low-saturation green region defined by the following, and the radiation angle is different from the first region The second light irradiated to a part of the second region is included in any of the low saturation blue-green region, the low saturation orange region, the high saturation blue-green region, and the high saturation red region defined by the following: It is to be. Condition (6E) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low saturation yellow region defined by the following, and the radiation angle is different from the first region The low light green region, the low chroma orange region, the low chroma red region, the high chroma blue region, the high chroma yellow region, and the high chroma orange region defined by It is included in one of the areas. Condition (6F) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low saturation orange region defined by the following, and the radiation angle is different from the first region The low light blue area, the low chroma blue-green area, the low chroma green area, the low chroma yellow area, and the low chroma red defined by It is included in any one of the region, the low saturation purple region, the high saturation blue region, and the high saturation yellow region. Condition (6G) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low saturation red region defined by the following, and the radiation angle is different from the first region The second light emitted to the second region that is a part of the region is defined as follows: white region, low saturation blue region, low saturation blue-green region, low saturation green region, low saturation yellow region, low It is included in any one of the saturation orange region and the high saturation blue-green region. Condition (6H) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low-saturation purple region defined by the following, and the radiation angle is different from the first region The second light emitted to the second region of a part of the region is defined by the low saturation blue-green region, the low saturation yellow region, the low saturation orange region, the low saturation red region, the high saturation blue region, It is included in each of the high saturation yellow region and the high saturation red region. Condition (6I) is that the first light irradiated to a part of the first region of the radiation angle region is included in the high saturation blue region defined by the following, and the radiation angle region different from the first region is The second light emitted to some of the second regions is included in any of the white region, the low saturation green region, the low saturation orange region, and the high saturation orange region defined by the following. Condition (6J) is that the first light irradiated to a part of the first region of the radiation angle region is included in a high saturation blue-green region defined by the following, and the radiation angle region different from the first region The second light irradiated to a part of the second region is included in the low-saturation green region defined by the following. The condition (6K) is that the first light irradiated to a part of the first region of the radiation angle region is included in the high saturation green region defined by the following, and the radiation angle region is different from the first region. The second light emitted to some of the second regions is included in the high saturation red region defined by the following. The condition (6L) is that the first light irradiated to a part of the first region of the radiation angle region is included in the high saturation yellow region defined by the following, and the radiation angle region different from the first region is The second light emitted to some of the second regions is included in any one of the white region, the low saturation purple region, and the high saturation orange region defined by the following. The condition (6M) is that the first light irradiated to a part of the first region of the radiation angle region is included in a high-saturation orange region defined by the following, and the radiation angle region is different from the first region. The second light emitted to some of the second areas is included in any one of the low saturation blue area, the low saturation blue green area, the low saturation yellow area, and the high saturation blue area defined by the following: That is. Condition (6N) is that the first light irradiated to a part of the first region of the radiation angle region is included in a high-saturation purple region defined by the following, and the radiation angle region is different from the first region. The second light emitted to some of the second areas is included in the low saturation green area defined by the following.

  In such an illumination device, since the first and second lights satisfy any one of the above conditions (6A) to (6N), the radiation angle region can be gradationally illuminated with light that induces drowsiness, and a person can sleep more asleep. It is possible to provide an easy lighting environment. Therefore, the illuminating device can suitably give a psychological effect of sleepiness to a person who is in an environment of illumination light.

  In another aspect, in the above-described lighting device, the control unit includes a first light that is applied to a first region that is a part of the radiation angle region, and one of the radiation angle regions different from the first region. In the CIE 1976 u′v ′ chromaticity diagram, the second light emitted to the second region of the part satisfies the following conditions (7A) to (7I) included in the first chromaticity region: Control the first and second LED light sources.

  The condition (7A) is that the first light irradiated to a part of the first region of the radiation angle region is included in a white region defined by the following, and is one of the radiation angle regions different from the first region. The second light emitted to the second region of the part is included in the high-saturation purple region defined by the following. The condition (7B) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low-saturation blue-green region defined by the following and is different from the first region. The second light emitted to the second region that is a part of the angle region is included in the high saturation yellow region defined by the following. Condition (7C) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low saturation red region defined by the following, and the radiation angle is different from the first region That is, the second light irradiated to the second region which is a part of the region is included in the high saturation orange region defined by the following. Condition (7D) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low-saturation purple region defined by the following, and the radiation angle is different from the first region That is, the second light irradiated to the second region which is a part of the region is included in the high-saturation purple region defined by the following. The condition (7E) is that the first light irradiated to a part of the first region of the radiation angle region is included in the high saturation green region defined by the following, and the radiation angle region is different from the first region. The second light emitted to some of the second regions is included in any of the low saturation yellow region, the low saturation red region, the high saturation yellow region, and the high saturation orange region defined by the following: . The condition (7F) is that the first light irradiated to a part of the first region of the radiation angle region is included in the high saturation yellow region defined by the following, and the radiation angle region different from the first region The second light irradiated to a part of the second region is included in any one of the high saturation green region and the high saturation red region defined by the following. Condition (7G) is that the first light irradiated to a part of the first region of the radiation angle region is included in a high-saturation orange region defined by the following, and the radiation angle region is different from the first region. The second light emitted to some of the second areas is included in any one of the low saturation purple area, the high saturation red area, and the high saturation purple area defined by the following. The condition (7H) is that the first light irradiated to a part of the first region of the radiation angle region is included in the high saturation red region defined by the following, and the radiation angle region is different from the first region. The second light emitted to some of the second regions is included in any of the low saturation orange region, the high saturation blue region, the high saturation green region, the high saturation yellow region, and the high saturation orange region defined by the following. It is. Condition (7I) is that the first light irradiated to a part of the first region of the radiation angle region is included in a high-saturation purple region defined by the following, and the radiation angle region is different from the first region. The second light emitted to some of the second areas is defined by the following: low saturation blue area, low saturation blue-green area, low saturation yellow area, low saturation purple area, high saturation blue area, high saturation yellow It is included in any one of the area, the high saturation orange area, and the high saturation red area.

  In such an illuminating device, the first and second lights satisfy any one of the above conditions (7A) to (7I), so that the radiation angle area can be gradationally illuminated with the light that wakes up sleepiness, thereby reducing human sleepiness. It can provide a lighting environment that can be awakened and awakened. Therefore, the illuminating device can suitably give a psychological effect of awakening sleepiness to a person in an environment of illumination light.

  In the above description, each region is defined as follows.

  White areas are coordinate points R_1 (0.268, 0.482), R-OR_1 (0.262, 0.485), OR_1 (0.257, 0.489), OR of (u ′, v ′). -Y_1 (0.233, 0.492), Y_1 (0.217, 0.494), Y-G_1 (0.209, 0.495), G_1 (0.179, 0.497), G-BG_1 (0.182, 0.476), BG_1 (0.186, 0.455), BG-B_1 (0.188, 0.445), B_1 (0.201, 0.397), B-P_1 (0 .219, 0.413), P_1 (0.237, 0.428), and P-R_1 (0.252, 0.455) are inner regions surrounded by a closed loop line.

  The low-saturation red region is represented by coordinate points R-OR_3 (0.367, 0.509), R_3 (0.382, 0.498), P-R_3 (0.336, 0) of (u ′, v ′). .417), P-R_1 (0.252, 0.455), R_1 (0.268, 0.482), and R-OR_1 (0.262, 0.485) are surrounded by a closed loop line. The inner area.

  The low-saturation orange region is represented by coordinate points OR-Y_3 (0.279, 0.530), OR_3 (0.351, 0.521), R-OR_3 (0.367, 0) of (u ′, v ′). .509), R-OR_1 (0.262, 0.485), OR_1 (0.257, 0.489), and OR-Y_1 (0.233, 0.492). The inner area.

  The low saturation yellow area is represented by coordinate points YG_3 (0.206, 0.538), Y_3 (0.231, 0.536), OR-Y_3 (0.279, 0) of (u ′, v ′). .530), OR-Y_1 (0.233, 0.492), Y_1 (0.217, 0.494), and Y-G_1 (0.209, 0.495) are surrounded by a closed loop line. The inner area.

  The low-saturation green regions are coordinate points G-BG_3 (0.126, 0.481), G_3 (0.116, 0.544), Y-G_3 (0.206, 0) of (u ′, v ′). .538), YG_1 (0.209, 0.495), G_1 (0.179, 0.497), and G-BG_1 (0.182, 0.476) are surrounded by a closed loop line. The inner area.

  The low-saturation blue-green regions are coordinate points BG-B_3 (0.144, 0.389), BG_3 (0.136, 0.417), G-BG_3 (0.126, 0.481), G-BG_1 (0.182, 0.476), BG_1 (0.186, 0.455), and BG-B_1 (0.188, 0.445). This is the inner area.

  The low-saturation blue regions are coordinate points BP_3 (0.236, 0.291), B_3 (0.182, 0.245), BG-B_3 (0.144, 0) of (u ′, v ′). .389), BG-B_1 (0.188, 0.445), B_1 (0.201, 0.397), and BP_1 (0.219, 0.413) are surrounded by a closed loop line. The inner area.

  The low-saturation purple areas are coordinate points P-R_3 (0.336, 0.417), P_3 (0.291, 0.336), and B-P_3 (0.236, 0) of (u ′, v ′). .291), BP_1 (0.219, 0.413), P_1 (0.237, 0.428), and P-R_1 (0.252, 0.455) are surrounded by a closed loop line. The inner area.

  The high saturation red region includes coordinate points R-OR_4 (0.419, 0.521), R_4 (0.440, 0.506), and P-R_4 (0.379, 0.398) of (u ′, v ′). ), P_R_3 (0.336, 0.417), R_3 (0.382, 0.498), and R-OR_3 (0.367, 0.509). It is.

  The high-saturation orange regions are coordinate points OR-Y_4 (0.302, 0.549), OR_4 (0.398, 0.537), R-OR_4 (0.419, 0.521) of (u ′, v ′). ), R-OR — 3 (0.367, 0.509), OR — 3 (0.351, 0.521), OR-Y — 3 (0.279, 0.530) It is.

  The high saturation yellow area includes coordinate points Y-G_4 (0.204, 0.559), Y_4 (0.237, 0.557), OR-Y_4 (0.302, 0.549) of (u ′, v ′). ), OR-Y_3 (0.279, 0.530), Y_3 (0.231, 0.536), YG_3 (0.206, 0.538), an inner region surrounded by a closed loop line connecting the points It is.

  The high-saturation green region includes coordinate points G-BG_4 (0.098, 0.483), G_4 (0.085, 0.568), Y-G_4 (0.204, 0.559) of (u ′, v ′). ), Y-G — 3 (0.206, 0.538), G — 3 (0.116, 0.544), G-BG — 3 (0.126, 0.481), an inner region surrounded by a closed loop line connecting the points It is.

  The high-saturation blue-green regions are coordinate points BG-B_4 (0.122, 0.361), BG_4 (0.112, 0.398), G-BG_4 (0.098, 0. 483), G-BG_3 (0.126, 0.481), BG_3 (0.136, 0.417), BG-B_3 (0.144, 0.389) and the inner side surrounded by a closed loop line connecting the points It is an area.

  The high-saturation blue region includes coordinate points BP_4 (0.245, 0.230), B_4 (0.173, 0.169), BG-B_4 (0.122, 0.361) of (u ′, v ′). ), BG-B_3 (0.144, 0.389), B_3 (0.182, 0.245), BP_3 (0.236, 0.291), and an inner region surrounded by a closed loop line connecting the points It is.

  The high-saturation purple regions are coordinate points P-R_4 (0.379, 0.398), P_4 (0.317, 0.291), and B-P_4 (0.245, 0.230) of (u ′, v ′). ), BP_3 (0.236, 0.291), P_3 (0.291, 0.336), P-R_3 (0.336, 0.417), the inner region surrounded by the closed loop line connecting the points It is.

  The illumination method according to another aspect includes a first LED light source and a second LED light source capable of emitting a plurality of colors of light, which are first and second lights of different colors, and a part of the first light. And a part of the second term are emitted so as to overlap each other in a radiation angle region, and the first and second lights irradiated on the radiation angle region are represented in a CIE 1976 u′v ′ chromaticity diagram. , (U ′, v ′) coordinate points R_4 (0.440, 0.506), R-OR_4 (0.419, 0.521), OR_4 (0.398, 0.537), OR-Y_4 ( 0.302, 0.549), Y_4 (0.237, 0.557), Y-G_4 (0.204, 0.559), G_4 (0.085, 0.568), G-BG_4 (0. 098, 0.483), BG_4 (0.112, 0. 98), BG-B_4 (0.122, 0.361), B_4 (0.173, 0.169), BP_4 (0.245, 0.230), P_4 (0.317, 0.291) , P_R_4 (0.379, 0.398), an upper limit boundary closed loop line obtained by connecting the points, and coordinate points R_1 (0.268, 0.482), R of (u ′, v ′) -OR_1 (0.262, 0.485), OR_1 (0.257, 0.489), OR-Y_1 (0.233, 0.492), Y_1 (0.217, 0.494), Y-G_1 (0.209, 0.495), G_1 (0.179, 0.497), G-BG_1 (0.182, 0.476), BG_1 (0.186, 0.455), BG-B_1 (0 .188, 0.445), B_1 (0.201, 0.3) 7), B-P_1 (0.219, 0.413), P_1 (0.237, 0.428), P-R_1 (0.252, 0.455) The first and second LED light sources are emitted so as to be included in a first chromaticity region between the closed loop line.

  Furthermore, the illumination method according to another aspect includes a control step of controlling the first and second LED light sources capable of emitting a plurality of colors of light so as to emit the first and second lights of different colors, respectively. And an overlapping step of overlapping a part of the first light emitted from the first LED light source and a part of the second light emitted from the second LED light source in a radiation angle region. In the control step, the chromaticity region of light that is the maximum saturation of the first and second lights irradiated on the radiation angle region is represented by (u ′, v ′) in the CIE 1976 u′v ′ chromaticity diagram. Coordinate points R_4 (0.440, 0.506), R-OR_4 (0.419, 0.521), OR_4 (0.398, 0.537), OR-Y_4 (0.302, 0.549) , Y_4 (0.237, 0.557), Y-G_4 (0.204, 0.559), G_4 (0.085, 0.568), G-BG_4 (0.098, 0.483), BG_4 (0.112, 0.398), BG-B_4 (0.122, 0.361), B_4 (0.173, 0.169), B-P_4 (0.245, 0.230), P_4 (0 .317, 0.291), P-R_4 (0.379, 0. 98) an upper limit boundary closed loop line obtained by connecting the points, and coordinate points R_1 (0.268, 0.482), R-OR_1 (0.262, 0.485) of (u ′, v ′). , OR_1 (0.257, 0.489), OR-Y_1 (0.233, 0.492), Y_1 (0.217, 0.494), Y-G_1 (0.209, 0.495), G_1 (0.179, 0.497), G-BG_1 (0.182, 0.476), BG_1 (0.186, 0.455), BG-B_1 (0.188, 0.445), B_1 (0 .201, 0.397), B-P_1 (0.219, 0.413), P_1 (0.237, 0.428), P-R_1 (0.252, 0.455). The first chromaticity region between the lower bound closed loop line obtained by To be included in, for controlling the first and second 2LED light source.

  In such an illumination method, the first and second lights emitted from the first and second LED light sources in different colors are emitted so that each part thereof overlaps each other in the radiation angle region. Can gradationally illuminate the radiation angle region. And since the said 1st and 2nd light irradiated to the said radiation | emission angle area | region is contained in the said 1st chromaticity area | region, the said illumination method can carry out gradation illumination of the said radiation | emission angle area | region with the light accepted by a person. Therefore, the illumination method can provide a person who is in the environment of illumination light with suitable illumination that is psychologically acceptable even when a desired hue combination is arbitrarily selected.

  This application is based on Japanese Patent Application No. 2014-29791 filed on February 19, 2014, the contents of which are included in this application.

  In order to express the present invention, the present invention has been properly and fully described through the embodiments with reference to the drawings. However, those skilled in the art can easily change and / or improve the above-described embodiments. It should be recognized that this is possible. Therefore, unless the modifications or improvements implemented by those skilled in the art are at a level that departs from the scope of the claims recited in the claims, the modifications or improvements are not covered by the claims. To be construed as inclusive.

According to the present invention, an illumination device and an illumination method can be provided.

Claims (9)

First and second LED light sources capable of emitting light of a plurality of colors, a part of the first light emitted from the first LED light source and a part of the second light emitted from the second LED light source A light source unit that emits the first and second light so as to overlap each other in a radiation angle region;
A controller that controls the first and second LED light sources to emit the first and second lights in different colors;
An input unit for inputting the emission color ,
In the CIE 1976 u′v ′ chromaticity diagram, the control unit has coordinates of (u ′, v ′) as the chromaticity region of light that is the maximum saturation of the first and second lights irradiated on the radiation angle region. Point R_4 (0.440, 0.506), R-OR_4 (0.419, 0.521), OR_4 (0.398, 0.537), OR-Y_4 (0.302, 0.549), Y_4 (0.237, 0.557), Y-G_4 (0.204, 0.559), G_4 (0.085, 0.568), G-BG_4 (0.098, 0.483), BG_4 (0 .112, 0.398), BG-B_4 (0.122, 0.361), B_4 (0.173, 0.169), BP_4 (0.245, 0.230), P_4 (0.317) , 0.291) and PR_4 (0.379, 0.398) The upper limit boundary closed loop line obtained by connecting, and the coordinate points R_1 (0.268, 0.482), R-OR_1 (0.262, 0.485), OR_1 (0.257) of (u ′, v ′). , 0.489), OR-Y_1 (0.233, 0.492), Y_1 (0.217, 0.494), Y-G_1 (0.209, 0.495), G_1 (0.179, 0 .497), G-BG_1 (0.182, 0.476), BG_1 (0.186, 0.455), BG-B_1 (0.188, 0.445), B_1 (0.201, 0.397) ), B-P_1 (0.219, 0.413), P_1 (0.237, 0.428), P-R_1 (0.252, 0.455) the first chromaticity region between lines, in the input section In the absence of the force luminescence color is converted so that the light emission color which is input by the input unit is included in the first chromaticity region, so as to emit light in the color the conversion, the first and A lighting device characterized by controlling a second LED light source. The control unit is configured to irradiate a first light that irradiates a part of a first region of the radiation angle region and a second light that irradiates a second region of a part of the radiation angle region different from the first region. However, in the CIE 1976 u'v 'chromaticity diagram, the first and second LED light sources are controlled so as to satisfy any one of the following (2A) to (2M) included in the first chromaticity region. The lighting device according to claim 1, wherein
The condition (2A) is that the first light irradiated to the first region is included in a white region defined by the following, and the second light irradiated to the second region is defined by the following low color Low blue area, Low chroma blue area, Low chroma green area, Low chroma yellow area, Low chroma orange area, Low chroma red area, Low chroma purple area, High chroma blue area, High chroma blue area, It is included in any of the high saturation green area, high saturation yellow area, high saturation orange area, high saturation red area, and high saturation purple area,
Condition (2B) is that the first light irradiated to the first region is included in the low saturation blue region defined by the following, and the second light irradiated to the second region is defined by the following: White area, low saturation blue-green area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue area, high saturation blue green area, It is included in any of the high saturation green area, high saturation yellow area, high saturation orange area, high saturation red area, and high saturation purple area,
Condition (2C) is that the first light irradiated to the first region is included in a low-saturation blue-green region defined by the following, and the second light irradiated to the second region is defined by the following White area, low saturation blue area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue area, high saturation blue green area, It is included in any of the high saturation green area, high saturation yellow area, high saturation orange area, high saturation red area, and high saturation purple area,
The condition (2D) is that the first light irradiated to the first region is included in the low-saturation green region defined by the following, and the second light irradiated to the second region is defined by the following: White area, low saturation blue area, low saturation blue green area, low saturation yellow area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue area, high saturation blue green area, It is included in any of the high saturation green area, high saturation yellow area, high saturation orange area, high saturation red area, and high saturation purple area,
Condition (2E) is that the first light irradiated to the first region is included in the low saturation yellow region defined by the following, and the second light irradiated to the second region is defined by the following: White area, low saturation blue area, low saturation blue-green area, low saturation green area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue area, high saturation blue green area, It is included in any of the high saturation green area, high saturation yellow area, high saturation orange area, high saturation red area, and high saturation purple area,
Condition (2F) is that the first light irradiated to the first region is included in the low-saturation orange region defined by the following, and the second light irradiated to the second region is defined by the following: White area, low saturation blue area, low saturation blue green area, low saturation green area, low saturation yellow area, low saturation red area, low saturation purple area, high saturation blue area, high saturation blue green area, It is included in any of the high saturation green area, high saturation yellow area, high saturation orange area, high saturation red area, and high saturation purple area,
Condition (2G) is that the first light irradiated to the first region is included in the low saturation red region defined by the following, and the second light irradiated to the second region is defined by the following: White area, low saturation blue area, low saturation blue green area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation purple area, high saturation blue area, high saturation blue green area, It is included in any of the high saturation green area, high saturation yellow area, high saturation orange area, high saturation red area, and high saturation purple area,
Condition (2H) is that the first light irradiated to the first region is included in the low-saturation purple region defined by the following, and the second light irradiated to the second region is defined by the following: White area, low saturation blue area, low saturation blue green area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, high saturation blue area, high saturation blue green area, It is included in any of the high saturation green area, high saturation yellow area, high saturation orange area, high saturation red area, and high saturation purple area,
Condition (2I) is that the first light irradiated to the first region is included in a high saturation blue region defined by the following, and the second light irradiated to the second region is defined by the following white Area, low saturation blue area, low saturation blue green area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue green area, It is included in any of the high saturation green area, high saturation yellow area, high saturation orange area, high saturation red area, and high saturation purple area,
Condition (2J) is that the first light irradiated on the first region is included in a high-saturation blue-green region defined by the following, and the second light irradiated on the second region is defined by the following: White area, Low chroma blue area, Low chroma blue area, Low chroma green area, Low chroma yellow area, Low chroma orange area, Low chroma red area, Low chroma purple area, High chroma blue area, It is included in any of the high saturation green area, high saturation yellow area, high saturation orange area, high saturation red area, and high saturation purple area,
Condition (2K) is that the first light irradiated to the first region is included in a high-saturation green region defined by the following, and the second light irradiated to the second region is defined by the following white Area, low saturation blue area, low saturation blue green area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue area, high saturation It is included in each of the blue-green region, high saturation yellow region, high saturation orange region, high saturation red region, and high saturation purple region,
Condition (2L) is that the first light irradiated to the first region is included in a high saturation yellow region defined by the following, and the second light irradiated to the second region is defined by the following white Area, low saturation blue area, low saturation blue green area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue area, high saturation It is included in each of the blue-green region, high-saturation green region, high-saturation orange region, high-saturation red region, and high-saturation purple region,
Condition (2M) is that the first light irradiated to the first region is included in a high-saturation orange region defined by the following, and the second light irradiated to the second region is defined by the following white Area, low saturation blue area, low saturation blue green area, low saturation green area, low saturation yellow area, low saturation orange area, low saturation red area, low saturation purple area, high saturation blue area, high saturation It is included in each of the blue-green region, high-saturation green region, high-saturation yellow region, high-saturation red region, and high-saturation purple region,
White areas are coordinate points R_1 (0.268, 0.482), R-OR_1 (0.262, 0.485), OR_1 (0.257, 0.489), OR of (u ′, v ′). -Y_1 (0.233, 0.492), Y_1 (0.217, 0.494), Y-G_1 (0.209, 0.495), G_1 (0.179, 0.497), G-BG_1 (0.182, 0.476), BG_1 (0.186, 0.455), BG-B_1 (0.188, 0.445), B_1 (0.201, 0.397), B-P_1 (0 .219, 0.413), P_1 (0.237, 0.428), P-R_1 (0.252, 0.455), and an inner region surrounded by a closed loop line connecting the points,
The low-saturation red region is represented by coordinate points R-OR_3 (0.367, 0.509), R_3 (0.382, 0.498), P-R_3 (0.336, 0) of (u ′, v ′). .417), P-R_1 (0.252, 0.455), R_1 (0.268, 0.482), and R-OR_1 (0.262, 0.485) are surrounded by a closed loop line. The inner area,
The low-saturation orange region is represented by coordinate points OR-Y_3 (0.279, 0.530), OR_3 (0.351, 0.521), R-OR_3 (0.367, 0) of (u ′, v ′). .509), R-OR_1 (0.262, 0.485), OR_1 (0.257, 0.489), and OR-Y_1 (0.233, 0.492). The inner area,
The low saturation yellow area is represented by coordinate points YG_3 (0.206, 0.538), Y_3 (0.231, 0.536), OR-Y_3 (0.279, 0) of (u ′, v ′). .530), OR-Y_1 (0.233, 0.492), Y_1 (0.217, 0.494), and Y-G_1 (0.209, 0.495) are surrounded by a closed loop line. The inner area,
The low-saturation green regions are coordinate points G-BG_3 (0.126, 0.481), G_3 (0.116, 0.544), Y-G_3 (0.206, 0) of (u ′, v ′). .538), YG_1 (0.209, 0.495), G_1 (0.179, 0.497), and G-BG_1 (0.182, 0.476) are surrounded by a closed loop line. The inner area,
The low-saturation blue-green regions are coordinate points BG-B_3 (0.144, 0.389), BG_3 (0.136, 0.417), G-BG_3 (0.126, 0.481), G-BG_1 (0.182, 0.476), BG_1 (0.186, 0.455), and BG-B_1 (0.188, 0.445). The inner area
The low-saturation blue regions are coordinate points BP_3 (0.236, 0.291), B_3 (0.182, 0.245), BG-B_3 (0.144, 0) of (u ′, v ′). .389), BG-B_1 (0.188, 0.445), B_1 (0.201, 0.397), and BP_1 (0.219, 0.413) are surrounded by a closed loop line. The inner area,
The low-saturation purple areas are coordinate points P-R_3 (0.336, 0.417), P_3 (0.291, 0.336), and B-P_3 (0.236, 0) of (u ′, v ′). .291), BP_1 (0.219, 0.413), P_1 (0.237, 0.428), and P-R_1 (0.252, 0.455) are surrounded by a closed loop line. The inner area,
The high saturation red region includes coordinate points R-OR_4 (0.419, 0.521), R_4 (0.440, 0.506), and P-R_4 (0.379, 0.398) of (u ′, v ′). ), P_R_3 (0.336, 0.417), R_3 (0.382, 0.498), and R-OR_3 (0.367, 0.509). And
The high-saturation orange regions are coordinate points OR-Y_4 (0.302, 0.549), OR_4 (0.398, 0.537), R-OR_4 (0.419, 0.521) of (u ′, v ′). ), R-OR — 3 (0.367, 0.509), OR — 3 (0.351, 0.521), OR-Y — 3 (0.279, 0.530) And
The high saturation yellow area includes coordinate points Y-G_4 (0.204, 0.559), Y_4 (0.237, 0.557), OR-Y_4 (0.302, 0.549) of (u ′, v ′). ), OR-Y_3 (0.279, 0.530), Y_3 (0.231, 0.536), YG_3 (0.206, 0.538), an inner region surrounded by a closed loop line connecting the points And
The high-saturation green region includes coordinate points G-BG_4 (0.098, 0.483), G_4 (0.085, 0.568), Y-G_4 (0.204, 0.559) of (u ′, v ′). ), Y-G — 3 (0.206, 0.538), G — 3 (0.116, 0.544), G-BG — 3 (0.126, 0.481), an inner region surrounded by a closed loop line connecting the points And
The high-saturation blue-green regions are coordinate points BG-B_4 (0.122, 0.361), BG_4 (0.112, 0.398), G-BG_4 (0.098, 0. 483), G-BG_3 (0.126, 0.481), BG_3 (0.136, 0.417), BG-B_3 (0.144, 0.389) and the inner side surrounded by a closed loop line connecting the points Area,
The high-saturation blue region includes coordinate points BP_4 (0.245, 0.230), B_4 (0.173, 0.169), BG-B_4 (0.122, 0.361) of (u ′, v ′). ), BG-B_3 (0.144, 0.389), B_3 (0.182, 0.245), BP_3 (0.236, 0.291), and an inner region surrounded by a closed loop line connecting the points And
The high-saturation purple regions are coordinate points P-R_4 (0.379, 0.398), P_4 (0.317, 0.291), and B-P_4 (0.245, 0.230) of (u ′, v ′). ), BP_3 (0.236, 0.291), P_3 (0.291, 0.336), P-R_3 (0.336, 0.417), the inner region surrounded by the closed loop line connecting the points It is. The control unit is configured to irradiate a first light that irradiates a part of a first region of the radiation angle region, and a second light that irradiates a second region of a part of the radiation angle region different from the first region. However, in the CIE 1976 u′v ′ chromaticity diagram, the first and second LED light sources are controlled so as to satisfy any one of the following (3A) to (3M) included in the first chromaticity region. The lighting device according to claim 2, wherein
The condition (3A) is that the first light irradiated to a part of the first region of the radiation angle region is included in a white region defined by the following, and is one of the radiation angle regions different from the first region. The second light emitted to the second region of the part is defined by the following: low saturation blue region, low saturation blue-green region, low saturation green region, low saturation red region, low saturation purple region, high saturation It is included in each of the blue region, high saturation blue-green region, high saturation green region, and high saturation yellow region,
Condition (3B) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low saturation blue region defined by the following, and the radiation angle different from the first region The second light irradiated to the second region of a part of the region is defined by the following low saturation blue-green region, low saturation orange region, low saturation red region, high saturation blue region, high saturation green region and high saturation yellow Is included in any of the regions,
Condition (3C) is that the first light irradiated to a first region of a part of the radiation angle region is included in a low-saturation blue-green region defined by the following, and is different from the first region. The second light emitted to the second area that is a part of the angle area is defined by the following: white area, low saturation blue area, low saturation green area, low saturation yellow area, low saturation orange area, low It is included in any one of the saturation red region, low saturation purple region, high saturation blue region, high saturation blue-green region, high saturation green region, high saturation yellow region and high saturation orange region,
Condition (3D) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low-saturation green region defined by the following, and the radiation angle is different from the first region The second light emitted to the second region of a part of the region is defined as follows: white region, low saturation blue region, low saturation blue-green region, low saturation yellow region, low saturation orange region, low It is included in any one of the saturation red area, the high saturation blue area, the high saturation blue-green area, and the high saturation yellow area.
Condition (3E) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low saturation yellow region defined by the following, and the radiation angle is different from the first region The second light emitted to the second region that is a part of the region is defined as follows: white region, low saturation blue region, low saturation blue-green region, low saturation green region, low saturation orange region, low It is included in each of the saturation violet region, high saturation blue region, high saturation blue-green region, high saturation green region, high saturation orange region, and high saturation purple region.
Condition (3F) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low-saturation orange region defined by the following, and the radiation angle is different from the first region The second light emitted to the second region that is a part of the region is defined as follows: white region, low saturation blue region, low saturation blue-green region, low saturation red region, low saturation purple region, high saturation It is included in each of the blue area, high saturation blue-green area, and high saturation green area,
Condition (3G) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low saturation red region defined by the following, and the radiation angle different from the first region The second light emitted to the second region that is part of the region is defined by the following: a white region, a low saturation blue region, a low saturation blue-green region, a low saturation yellow region, a low saturation orange region, and a high saturation Is included in any of the blue-green region, the high-saturation green region, and the high-saturation yellow region,
Condition (3H) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low-saturation purple region defined by the following, and the radiation angle is different from the first region The second light emitted to a second region that is a part of the region is one of the low saturation blue region, the low saturation blue-green region, the low saturation red region, and the high saturation yellow region defined by the following: Is to be included
Condition (3I) is that the first light irradiated to a part of the first region of the radiation angle region is included in a high saturation blue region defined by the following and the radiation angle region is different from the first region. The second light emitted to some of the second regions is included in any of the white region and the high saturation green region defined by the following:
Condition (3J) is that the first light irradiated to a part of the first region of the radiation angle region is included in a high-saturation blue-green region defined by the following, and is different from the first region in the radiation angle region The second light irradiated to a part of the second region is defined as follows: white region, low chroma blue region, low chroma green region, low chroma yellow region, low chroma orange region, low chroma It is included in each of the red region, low saturation purple region, high saturation blue region, high saturation green region and high saturation yellow region,
The condition (3K) is that the first light irradiated to a part of the first region of the radiation angle region is included in the high saturation green region defined by the following, and the radiation angle region is different from the first region. The second light emitted to some of the second regions is included in any of the low saturation blue region and the high saturation blue region defined by the following:
Condition (3L) is that the first light irradiated to a part of the first region of the radiation angle region is included in the high saturation yellow region defined by the following, and the radiation angle region is different from the first region. The second light emitted to some of the second regions is included in any of the low saturation blue region, the low saturation blue-green region, the high saturation blue region, and the high saturation orange region defined by the following: Yes,
Condition (3M) is that the first light irradiated to a part of the first region of the radiation angle region is included in a high-saturation orange region defined by the following, and the radiation angle region is different from the first region. The second light irradiated to a part of the second region is included in the low saturation blue region defined by the following. The control unit is configured to irradiate a first light that irradiates a part of a first region of the radiation angle region, and a second light that irradiates a second region of a part of the radiation angle region different from the first region. In the CIE 1976 u′v ′ chromaticity diagram, the first and second LED light sources are controlled so as to satisfy any of the following conditions (4A) to (4J) included in the first chromaticity region: The lighting device according to claim 2, wherein
The condition (4A) is that a part of the radiation angle region different from the first region is included in the defined white region where the first light irradiated to a part of the first region of the radiation angle region is included. The second light emitted to the second region is included in any one of the defined low-saturation blue region, high-saturation blue region, high-saturation blue-green region, high-saturation green region, and high-saturation purple region. ,
Condition (4B) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined low saturation blue region, and is different from the first region in the radiation angle region The second light emitted to a part of the second region is included in any one of the defined low-saturation blue-green region, high-saturation blue region, high-saturation blue-green region, and high-saturation yellow region. ,
Condition (4C) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined low-saturation blue-green region and is different from the first region in the radiation angle The second light emitted to the second region that is a part of the region is defined as the white region, the low saturation blue region, the low saturation green region, the low saturation yellow region, the low saturation purple region, and the high saturation blue region. , The high saturation blue / green region, the high saturation green region and the high saturation yellow region.
The condition (4D) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined low-saturation green region and is different from the first region in the radiation angle region The second light emitted to a part of the second region is included in any of the defined white region, low saturation blue region, high saturation blue region, high saturation blue-green region, and high saturation purple region. And
The condition (4E) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined low saturation yellow region, and the radiation angle region is different from the first region. The second light irradiated to a part of the second region is defined as the low saturation blue region, the low saturation blue-green region, the low saturation green region, the low saturation purple region, the high saturation blue region, and the high saturation blue. Included in one of the green and high-saturation green areas,
Condition (4F) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined low-saturation purple region, and is different from the first region in the radiation angle region The second light emitted to a part of the second region is included in any one of the defined low saturation blue region and low saturation blue-green region,
Condition (4G) is that the first light applied to a part of the first region of the radiation angle region is included in the defined high saturation blue region and is different from the first region in the radiation angle region. The second light emitted to the second region of the portion is included in any one of the defined low-saturation green region and high-saturation green region,
Condition (4H) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined high-saturation blue-green region, and the radiation angle region is different from the first region. The second light emitted to some of the second areas is the defined white area, low chroma blue area, low chroma blue green area, low chroma green area, low chroma yellow area, and low chroma orange. Area, low saturation red area, low saturation purple area, high saturation green area, high saturation orange area, and high saturation red area.
Condition (4I) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined high-saturation green region, and one of the radiation angle regions different from the first region. The second light emitted to the second region of the part is included in any one of the defined low saturation blue region, high saturation blue region, high saturation blue-green region, and high saturation purple region,
Condition (4J) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined high saturation yellow region, and one of the radiation angle regions different from the first region. The second light emitted to the second region of the section is defined as the white region, the low saturation blue region, the low saturation blue-green region, the low saturation green region, the high saturation blue region, the high saturation blue-green region, and the high saturation orange. It is included in any one of the areas. The control unit is configured to irradiate a first light that irradiates a part of a first region of the radiation angle region and a second light that irradiates a second region of a part of the radiation angle region different from the first region. In the CIE 1976 u′v ′ chromaticity diagram, the first and second LED light sources are controlled so as to satisfy any of the following conditions (5A) to (5L) included in the first chromaticity region: The lighting device according to claim 2, wherein
The condition (5A) is that a part of the radiation angle region that is different from the first region in which the first light irradiated to a part of the first region of the radiation angle region is included in the defined white region. The second light emitted to the second region of the low-saturation blue region, low-saturation blue-green region, low-saturation green region, low-saturation yellow region, high-saturation blue region, high-saturation blue-green region, It is included in each of the high saturation green region and the high saturation yellow region,
The condition (5B) is that the first light emitted to a part of the first region of the radiation angle region is included in the defined low-saturation blue region and is different from the first region in the radiation angle region The second light irradiated to a part of the second region is defined as the white region, the low saturation blue-green region, the low saturation green region, the low saturation yellow region, the low saturation orange region, and the low saturation. It is included in any of the red region, high saturation blue region, high saturation blue-green region, high saturation green region and high saturation yellow region,
Condition (5C) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined low saturation blue-green region and is different from the first region in the radiation angle The second light emitted to the second region that is a part of the region is defined as the white region, the low saturation blue region, the low saturation green region, the low saturation yellow region, the low saturation purple region, and the high saturation blue region. , A high saturation blue-green region, a high saturation green region, a high saturation yellow region, and a high saturation purple region,
The condition (5D) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined low-saturation green region and is different from the first region in the radiation angle region The second light irradiated to a part of the second region is included in any of the defined white region, low saturation blue region, high saturation blue region and high saturation blue-green region,
Condition (5E) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined low saturation yellow region, and is different from the first region in the radiation angle region The second light irradiated to a part of the second region is defined as a white region, a low saturation blue region, a low saturation blue-green region, a low saturation red region, a high saturation blue region, a high saturation blue-green region, Included in either the high saturation green region or the high saturation red region,
The condition (5F) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined low-saturation orange region and is different from the first region in the radiation angle region The second light irradiated to a part of the second region is included in any of the defined low saturation blue region, high saturation blue region, high saturation blue-green region and high saturation yellow region,
The condition (5G) is that the first light irradiated on a part of the first region of the radiation angle region is included in the defined low saturation red region and is different from the first region in the radiation angle region The second light emitted to a part of the second region is included in any one of the defined white region and high saturation yellow region,
The condition (5H) is that the first light irradiated on a part of the first region of the radiation angle region is included in the defined low-saturation purple region and is different from the first region in the radiation angle region The second light irradiated to a part of the second region is included in the defined high saturation blue region,
Condition (5I) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined high-saturation blue region, and one of the radiation angle regions different from the first region. The second light emitted to the second region of the portion is included in any of the defined white region, low saturation green region, low saturation yellow region, low saturation orange region, and high saturation yellow region That is,
Condition (5J) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined high-saturation blue-green region and the radiation angle region is different from the first region. The second light emitted to some of the second areas is the defined white area, low saturation blue area, low saturation green area, low saturation green area, low saturation yellow area, and low saturation orange area. , A low saturation purple region, a high saturation blue region, and a high saturation yellow region.
The condition (5K) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined high-saturation green region, and one of the radiation angle regions different from the first region. The second light emitted to the second region of the part is included in the defined high saturation blue region,
The condition (5L) is that the first light irradiated to a part of the first region of the radiation angle region is included in the defined high saturation yellow region, and is one of the radiation angle regions different from the first region. 2nd light irradiated to the 2nd area | region of a part is contained in either of each area | region of the said low chroma blue area | region, a high chroma blue area | region, and a high chroma blue green area | region. The control unit is configured to irradiate a first light that irradiates a part of a first region of the radiation angle region and a second light that irradiates a second region of a part of the radiation angle region different from the first region. In the CIE 1976 u′v ′ chromaticity diagram, the first and second LED light sources are controlled so as to satisfy any of the following conditions (6A) to (6N) included in the first chromaticity region: The lighting device according to claim 1, wherein
The condition (6A) is that the first light irradiated to a part of the first region of the radiation angle region is included in a white region defined by the following, and is one of the radiation angle regions different from the first region. The second light emitted to the second region of the area is defined by the following: low saturation green region, low saturation yellow region, low saturation orange region, low saturation red region, low saturation purple region, high saturation blue It is included in each of the green region and the high saturation yellow region,
Condition (6B) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low saturation blue region defined by the following and the radiation angle is different from the first region The second light emitted to the second region that is part of the region is defined by the following: a white region, a low saturation blue-green region, a low saturation green region, a low saturation yellow region, a low saturation red region, a low It is included in each of the saturation purple region, high saturation blue-green region, high saturation green region, high saturation yellow region, high saturation orange region and high saturation red region,
Condition (6C) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low-saturation blue-green region defined by the following and is different from the first region. The second light applied to the second region of the angular region is defined by the following low saturation yellow region, low saturation orange region, low saturation purple region, high saturation orange region, high saturation red region, and high saturation purple. Is included in any of the regions,
Condition (6D) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low-saturation green region defined by the following, and the radiation angle is different from the first region The second light irradiated to a part of the second region is included in any of the low saturation blue-green region, the low saturation orange region, the high saturation blue-green region, and the high saturation red region defined by the following: And
Condition (6E) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low saturation yellow region defined by the following, and the radiation angle is different from the first region The low light green region, the low chroma orange region, the low chroma red region, the high chroma blue region, the high chroma yellow region, and the high chroma orange region defined by Are included in any of the areas
Condition (6F) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low saturation orange region defined by the following, and the radiation angle is different from the first region The low light blue area, the low chroma blue-green area, the low chroma green area, the low chroma yellow area, and the low chroma red defined by Area, low-saturation purple area, high-saturation blue area, and high-saturation yellow area.
Condition (6G) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low saturation red region defined by the following, and the radiation angle is different from the first region The second light emitted to the second region that is a part of the region is defined as follows: white region, low saturation blue region, low saturation blue-green region, low saturation green region, low saturation yellow region, low It is included in each of the saturation orange region and the high saturation blue-green region,
Condition (6H) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low-saturation purple region defined by the following, and the radiation angle is different from the first region The second light emitted to the second region of a part of the region is defined by the low saturation blue-green region, the low saturation yellow region, the low saturation orange region, the low saturation red region, the high saturation blue region, It is included in each of the high saturation yellow region and the high saturation red region,
Condition (6I) is that the first light irradiated to a part of the first region of the radiation angle region is included in the high saturation blue region defined by the following, and the radiation angle region different from the first region is The second light emitted to some of the second regions is included in any of the white region, the low saturation green region, the low saturation orange region, and the high saturation orange region defined by the following:
Condition (6J) is that the first light irradiated to a part of the first region of the radiation angle region is included in a high saturation blue-green region defined by the following, and the radiation angle region different from the first region The second light emitted to a part of the second region is included in a low-saturation green region defined by:
The condition (6K) is that the first light irradiated to a part of the first region of the radiation angle region is included in the high saturation green region defined by the following, and the radiation angle region is different from the first region. The second light emitted to some second region is included in the high saturation red region defined by:
The condition (6L) is that the first light irradiated to a part of the first region of the radiation angle region is included in the high saturation yellow region defined by the following, and the radiation angle region different from the first region is The second light emitted to some of the second regions is included in any of the white region, the low saturation purple region, and the high saturation orange region defined by the following:
The condition (6M) is that the first light irradiated to a part of the first region of the radiation angle region is included in a high-saturation orange region defined by the following, and the radiation angle region is different from the first region. The second light emitted to some of the second areas is included in any one of the low saturation blue area, the low saturation blue green area, the low saturation yellow area, and the high saturation blue area defined by the following: That is,
Condition (6N) is that the first light irradiated to a part of the first region of the radiation angle region is included in a high-saturation purple region defined by the following, and the radiation angle region is different from the first region. The second light emitted to some of the second regions is included in a low-saturation green region defined by:
White areas are coordinate points R_1 (0.268, 0.482), R-OR_1 (0.262, 0.485), OR_1 (0.257, 0.489), OR of (u ′, v ′). -Y_1 (0.233, 0.492), Y_1 (0.217, 0.494), Y-G_1 (0.209, 0.495), G_1 (0.179, 0.497), G-BG_1 (0.182, 0.476), BG_1 (0.186, 0.455), BG-B_1 (0.188, 0.445), B_1 (0.201, 0.397), B-P_1 (0 .219, 0.413), P_1 (0.237, 0.428), P-R_1 (0.252, 0.455), and an inner region surrounded by a closed loop line connecting the points,
The low-saturation red region is represented by coordinate points R-OR_3 (0.367, 0.509), R_3 (0.382, 0.498), P-R_3 (0.336, 0) of (u ′, v ′). .417), P-R_1 (0.252, 0.455), R_1 (0.268, 0.482), and R-OR_1 (0.262, 0.485) are surrounded by a closed loop line. The inner area,
The low-saturation orange region is represented by coordinate points OR-Y_3 (0.279, 0.530), OR_3 (0.351, 0.521), R-OR_3 (0.367, 0) of (u ′, v ′). .509), R-OR_1 (0.262, 0.485), OR_1 (0.257, 0.489), and OR-Y_1 (0.233, 0.492). The inner area,
The low saturation yellow area is represented by coordinate points YG_3 (0.206, 0.538), Y_3 (0.231, 0.536), OR-Y_3 (0.279, 0) of (u ′, v ′). .530), OR-Y_1 (0.233, 0.492), Y_1 (0.217, 0.494), and Y-G_1 (0.209, 0.495) are surrounded by a closed loop line. The inner area,
The low-saturation green regions are coordinate points G-BG_3 (0.126, 0.481), G_3 (0.116, 0.544), Y-G_3 (0.206, 0) of (u ′, v ′). .538), YG_1 (0.209, 0.495), G_1 (0.179, 0.497), and G-BG_1 (0.182, 0.476) are surrounded by a closed loop line. The inner area,
The low-saturation blue-green regions are coordinate points BG-B_3 (0.144, 0.389), BG_3 (0.136, 0.417), G-BG_3 (0.126, 0.481), G-BG_1 (0.182, 0.476), BG_1 (0.186, 0.455), and BG-B_1 (0.188, 0.445). The inner area
The low-saturation blue regions are coordinate points BP_3 (0.236, 0.291), B_3 (0.182, 0.245), BG-B_3 (0.144, 0) of (u ′, v ′). .389), BG-B_1 (0.188, 0.445), B_1 (0.201, 0.397), and BP_1 (0.219, 0.413) are surrounded by a closed loop line. The inner area,
The low-saturation purple areas are coordinate points P-R_3 (0.336, 0.417), P_3 (0.291, 0.336), and B-P_3 (0.236, 0) of (u ′, v ′). .291), BP_1 (0.219, 0.413), P_1 (0.237, 0.428), and P-R_1 (0.252, 0.455) are surrounded by a closed loop line. The inner area,
The high saturation red region includes coordinate points R-OR_4 (0.419, 0.521), R_4 (0.440, 0.506), and P-R_4 (0.379, 0.398) of (u ′, v ′). ), P_R_3 (0.336, 0.417), R_3 (0.382, 0.498), and R-OR_3 (0.367, 0.509). And
The high-saturation orange regions are coordinate points OR-Y_4 (0.302, 0.549), OR_4 (0.398, 0.537), R-OR_4 (0.419, 0.521) of (u ′, v ′). ), R-OR — 3 (0.367, 0.509), OR — 3 (0.351, 0.521), OR-Y — 3 (0.279, 0.530) And
The high saturation yellow area includes coordinate points Y-G_4 (0.204, 0.559), Y_4 (0.237, 0.557), OR-Y_4 (0.302, 0.549) of (u ′, v ′). ), OR-Y_3 (0.279, 0.530), Y_3 (0.231, 0.536), YG_3 (0.206, 0.538), an inner region surrounded by a closed loop line connecting the points And
The high-saturation green region includes coordinate points G-BG_4 (0.098, 0.483), G_4 (0.085, 0.568), Y-G_4 (0.204, 0.559) of (u ′, v ′). ), Y-G — 3 (0.206, 0.538), G — 3 (0.116, 0.544), G-BG — 3 (0.126, 0.481), an inner region surrounded by a closed loop line connecting the points And
The high-saturation blue-green regions are coordinate points BG-B_4 (0.122, 0.361), BG_4 (0.112, 0.398), G-BG_4 (0.098, 0. 483), G-BG_3 (0.126, 0.481), BG_3 (0.136, 0.417), BG-B_3 (0.144, 0.389) and the inner side surrounded by a closed loop line connecting the points Area,
The high-saturation blue region includes coordinate points BP_4 (0.245, 0.230), B_4 (0.173, 0.169), BG-B_4 (0.122, 0.361) of (u ′, v ′). ), BG-B_3 (0.144, 0.389), B_3 (0.182, 0.245), BP_3 (0.236, 0.291), and an inner region surrounded by a closed loop line connecting the points And
The high-saturation purple regions are coordinate points P-R_4 (0.379, 0.398), P_4 (0.317, 0.291), and B-P_4 (0.245, 0.230) of (u ′, v ′). ), BP_3 (0.236, 0.291), P_3 (0.291, 0.336), P-R_3 (0.336, 0.417), the inner region surrounded by the closed loop line connecting the points It is. The control unit is configured to irradiate a first light that irradiates a part of a first region of the radiation angle region and a second light that irradiates a second region of a part of the radiation angle region different from the first region. In the CIE 1976 u′v ′ chromaticity diagram, the first and second LED light sources are controlled so as to satisfy any one of the following (7A) to (7I) included in the first chromaticity region. The lighting device according to claim 1, wherein
The condition (7A) is that the first light irradiated to a part of the first region of the radiation angle region is included in a white region defined by the following, and is one of the radiation angle regions different from the first region. The second light emitted to the second region of the part is included in a high-saturation purple region defined by:
The condition (7B) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low-saturation blue-green region defined by the following and is different from the first region. The second light applied to the second region of the angular region is included in the high saturation yellow region defined by:
Condition (7C) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low saturation red region defined by the following, and the radiation angle is different from the first region The second light applied to the second region of the region is included in the high saturation orange region defined by:
Condition (7D) is that the first light irradiated to a part of the first region of the radiation angle region is included in a low-saturation purple region defined by the following, and the radiation angle is different from the first region The second light emitted to a second region of a portion of the region is included in a high-saturation purple region defined by:
The condition (7E) is that the first light irradiated to a part of the first region of the radiation angle region is included in the high saturation green region defined by the following, and the radiation angle region is different from the first region. The second light emitted to some of the second regions is included in any of the low saturation yellow region, the low saturation red region, the high saturation yellow region, and the high saturation orange region defined by the following: ,
The condition (7F) is that the first light irradiated to a part of the first region of the radiation angle region is included in the high saturation yellow region defined by the following, and the radiation angle region different from the first region The second light emitted to some of the second regions is included in any of the high saturation green region and the high saturation red region defined by the following:
Condition (7G) is that the first light irradiated to a part of the first region of the radiation angle region is included in a high-saturation orange region defined by the following, and the radiation angle region is different from the first region. The second light emitted to some of the second regions is included in any one of the low saturation purple region, the high saturation red region, and the high saturation purple region defined by the following:
The condition (7H) is that the first light irradiated to a part of the first region of the radiation angle region is included in the high saturation red region defined by the following, and the radiation angle region is different from the first region. The second light emitted to some of the second regions is included in any of the low saturation orange region, the high saturation blue region, the high saturation green region, the high saturation yellow region, and the high saturation orange region defined by the following. And
Condition (7I) is that the first light irradiated to a part of the first region of the radiation angle region is included in a high-saturation purple region defined by the following, and the radiation angle region is different from the first region. The second light emitted to some of the second areas is defined by the following: low saturation blue area, low saturation blue-green area, low saturation yellow area, low saturation purple area, high saturation blue area, high saturation yellow Area, high saturation orange area, and high saturation red area.
White areas are coordinate points R_1 (0.268, 0.482), R-OR_1 (0.262, 0.485), OR_1 (0.257, 0.489), OR of (u ′, v ′). -Y_1 (0.233, 0.492), Y_1 (0.217, 0.494), Y-G_1 (0.209, 0.495), G_1 (0.179, 0.497), G-BG_1 (0.182, 0.476), BG_1 (0.186, 0.455), BG-B_1 (0.188, 0.445), B_1 (0.201, 0.397), B-P_1 (0 .219, 0.413), P_1 (0.237, 0.428), P-R_1 (0.252, 0.455), and an inner region surrounded by a closed loop line connecting the points,
The low-saturation red region is represented by coordinate points R-OR_3 (0.367, 0.509), R_3 (0.382, 0.498), P-R_3 (0.336, 0) of (u ′, v ′). .417), P-R_1 (0.252, 0.455), R_1 (0.268, 0.482), and R-OR_1 (0.262, 0.485) are surrounded by a closed loop line. The inner area,
The low-saturation orange region is represented by coordinate points OR-Y_3 (0.279, 0.530), OR_3 (0.351, 0.521), R-OR_3 (0.367, 0) of (u ′, v ′). .509), R-OR_1 (0.262, 0.485), OR_1 (0.257, 0.489), and OR-Y_1 (0.233, 0.492). The inner area,
The low saturation yellow area is represented by coordinate points YG_3 (0.206, 0.538), Y_3 (0.231, 0.536), OR-Y_3 (0.279, 0) of (u ′, v ′). .530), OR-Y_1 (0.233, 0.492), Y_1 (0.217, 0.494), and Y-G_1 (0.209, 0.495) are surrounded by a closed loop line. The inner area,
The low-saturation green regions are coordinate points G-BG_3 (0.126, 0.481), G_3 (0.116, 0.544), Y-G_3 (0.206, 0) of (u ′, v ′). .538), YG_1 (0.209, 0.495), G_1 (0.179, 0.497), and G-BG_1 (0.182, 0.476) are surrounded by a closed loop line. The inner area,
The low-saturation blue-green regions are coordinate points BG-B_3 (0.144, 0.389), BG_3 (0.136, 0.417), G-BG_3 (0.126, 0.481), G-BG_1 (0.182, 0.476), BG_1 (0.186, 0.455), and BG-B_1 (0.188, 0.445). The inner area
The low-saturation blue regions are coordinate points BP_3 (0.236, 0.291), B_3 (0.182, 0.245), BG-B_3 (0.144, 0) of (u ′, v ′). .389), BG-B_1 (0.188, 0.445), B_1 (0.201, 0.397), and BP_1 (0.219, 0.413) are surrounded by a closed loop line. The inner area,
The low-saturation purple areas are coordinate points P-R_3 (0.336, 0.417), P_3 (0.291, 0.336), and B-P_3 (0.236, 0) of (u ′, v ′). .291), BP_1 (0.219, 0.413), P_1 (0.237, 0.428), and P-R_1 (0.252, 0.455) are surrounded by a closed loop line. The inner area,
The high saturation red region includes coordinate points R-OR_4 (0.419, 0.521), R_4 (0.440, 0.506), and P-R_4 (0.379, 0.398) of (u ′, v ′). ), P_R_3 (0.336, 0.417), R_3 (0.382, 0.498), and R-OR_3 (0.367, 0.509). And
The high-saturation orange regions are coordinate points OR-Y_4 (0.302, 0.549), OR_4 (0.398, 0.537), R-OR_4 (0.419, 0.521) of (u ′, v ′). ), R-OR — 3 (0.367, 0.509), OR — 3 (0.351, 0.521), OR-Y — 3 (0.279, 0.530) And
The high saturation yellow area includes coordinate points Y-G_4 (0.204, 0.559), Y_4 (0.237, 0.557), OR-Y_4 (0.302, 0.549) of (u ′, v ′). ), OR-Y_3 (0.279, 0.530), Y_3 (0.231, 0.536), YG_3 (0.206, 0.538), an inner region surrounded by a closed loop line connecting the points And
The high-saturation green region includes coordinate points G-BG_4 (0.098, 0.483), G_4 (0.085, 0.568), Y-G_4 (0.204, 0.559) of (u ′, v ′). ), Y-G — 3 (0.206, 0.538), G — 3 (0.116, 0.544), G-BG — 3 (0.126, 0.481), an inner region surrounded by a closed loop line connecting the points And
The high-saturation blue-green regions are coordinate points BG-B_4 (0.122, 0.361), BG_4 (0.112, 0.398), G-BG_4 (0.098, 0. 483), G-BG_3 (0.126, 0.481), BG_3 (0.136, 0.417), BG-B_3 (0.144, 0.389) and the inner side surrounded by a closed loop line connecting the points Area,
The high-saturation blue region includes coordinate points BP_4 (0.245, 0.230), B_4 (0.173, 0.169), BG-B_4 (0.122, 0.361) of (u ′, v ′). ), BG-B_3 (0.144, 0.389), B_3 (0.182, 0.245), BP_3 (0.236, 0.291), and an inner region surrounded by a closed loop line connecting the points And
The high-saturation purple regions are coordinate points P-R_4 (0.379, 0.398), P_4 (0.317, 0.291), and B-P_4 (0.245, 0.230) of (u ′, v ′). ), BP_3 (0.236, 0.291), P_3 (0.291, 0.336), P-R_3 (0.336, 0.417), the inner region surrounded by the closed loop line connecting the points It is. A plurality of colors of each of the first and second 2LED light source capable of emitting a light, emits a portion of the second optical part of the first light a first light and second light having different colors from each other An illumination method for radiating so as to overlap each other in an angular region,
The luminescent color is input, and the input luminescent color is the coordinate point R_4 (0.440, 0.506), R-OR_4 (0...) Of (u ′, v ′) in the CIE 1976 u′v ′ chromaticity diagram. 419, 0.521), OR_4 (0.398, 0.537), OR-Y_4 (0.302, 0.549), Y_4 (0.237, 0.557), Y-G_4 (0.204, 0.559), G_4 (0.085, 0.568), G-BG_4 (0.098, 0.483), BG_4 (0.112, 0.398), BG-B_4 (0.122, 0. 361), B_4 (0.173, 0.169), BP_4 (0.245, 0.230), P_4 (0.317, 0.291), P-R_4 (0.379, 0.398) An upper bound closed loop line obtained by connecting each point of ( u ′, v ′) coordinate points R_1 (0.268, 0.482), R-OR_1 (0.262, 0.485), OR_1 (0.257, 0.489), OR-Y_1 (0. 233, 0.492), Y_1 (0.217, 0.494), Y-G_1 (0.209, 0.495), G_1 (0.179, 0.497), G-BG_1 (0.182, 0.476), BG_1 (0.186, 0.455), BG-B_1 (0.188, 0.445), B_1 (0.201, 0.397), BP_1 (0.219, 0. 413), P_1 (0.237, 0.428), and P-R_1 (0.252, 0.455) are included in the first chromaticity region between the lower limit boundary closed loop line obtained by connecting the points. If the non, include the input emission color in the first chromaticity region Converted to so that, so as to emit light in the color the conversion, the illumination method for causing to emit the first and second 2LED light source. A control step of controlling each of the first and second LED light sources capable of emitting light of a plurality of colors to emit first and second lights of different colors;
An overlapping step of overlapping a part of the first light emitted from the first LED light source and a part of the second light emitted from the second LED light source in a radiation angle region;
An input process for inputting the emission color ,
In the control step, the chromaticity region of light that is the maximum saturation of the first and second lights irradiated on the radiation angle region is represented by coordinates (u ′, v ′) in the CIE 1976 u′v ′ chromaticity diagram. Point R_4 (0.440, 0.506), R-OR_4 (0.419, 0.521), OR_4 (0.398, 0.537), OR-Y_4 (0.302, 0.549), Y_4 (0.237, 0.557), Y-G_4 (0.204, 0.559), G_4 (0.085, 0.568), G-BG_4 (0.098, 0.483), BG_4 (0 .112, 0.398), BG-B_4 (0.122, 0.361), B_4 (0.173, 0.169), BP_4 (0.245, 0.230), P_4 (0.317) , 0.291), PR_4 (0.379, 0.398) , And the coordinate point R_1 (0.268, 0.482), R-OR_1 (0.262, 0.485), OR_1 (0. 257, 0.489), OR-Y_1 (0.233, 0.492), Y_1 (0.217, 0.494), Y-G_1 (0.209, 0.495), G_1 (0.179, 0.497), G-BG_1 (0.182, 0.476), BG_1 (0.186, 0.455), BG-B_1 (0.188, 0.445), B_1 (0.201, 0. 397), BP_1 (0.219, 0.413), P_1 (0.237, 0.428), and P-R_1 (0.252, 0.455) are connected to the lower limit boundary. the first chromaticity region between the closed-loop line, said input engineering In the absence of the input emission color in, converted so that the light emission color which is input by said input step is included in the first chromaticity region, so as to emit light in the color the conversion, the first And the second LED light source is controlled.

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