JP6945154B2 - Lighting equipment and lighting control method - Google Patents

Description

The present invention relates to a luminaire and a luminaire control method, and more particularly to a luminaire and a luminaire control method capable of enhancing a relaxation effect.

Lighting equipment that can obtain a relaxation effect by illumination light is known. As this type of luminaire, a luminaire that adjusts the rhythm of human breathing and leads to a relaxed state by periodically changing the brightness of the illuminating light has been proposed (Patent Document 1).

Japanese Unexamined Patent Publication No. 2005-339993

So far, luminaires that focus on the color of light to obtain a relaxation effect have not been studied much. Further, even if light of a color capable of obtaining a relaxation effect has been studied, the light is a specific color, and it has not been possible to easily create light of a plurality of colors having a high relaxation effect.

An object of the present invention is to provide a lighting fixture or a lighting control method capable of easily producing light of a plurality of colors having a high relaxation effect.

In order to achieve the above object, one aspect of the lighting fixture according to the present invention includes a light emitting unit and a drive circuit that controls toning of light emitted from the light emitting unit, and the drive circuit has an xy chromaticity. Assuming that the chromaticity coordinates in the figure are (x, y), the light emitted from the light emitting unit is (x, y) = (0.1704, 0.1107), (0.3151, 0.2442), ( The colors correspond to the points on the first approximate straight line which are the approximate straight lines of the three points of 0.4477 and 0.3436) and the points included within 3 steps of the MacAdam ellipse from the points on the first approximate straight line. It is characterized in that the toning control is performed.

Further, another aspect of the lighting fixture according to the present invention includes a light emitting unit and a drive circuit that controls toning of the light emitted from the light emitting unit, and sets the chromaticity coordinates in the xy chromaticity diagram (x, When y), the approximate straight lines of the three points (x, y) = (0.1704, 0.1107), (0.3151, 0.2442), and (0.4477, 0.3436) are the first. Let the approximate straight line be the approximate straight line of three points (x, y) = (0.3474, 0.3909), (0.4900, 0.4089), (0.4476, 0.4074) as the second approximate straight line. The straight line passing through the two points of (x, y) = (0.135, 0.120) and the intersection of the first approximate straight line and the spectral locus is defined as the third straight line, and the first approximate straight line and the third approximate straight line are defined as the third straight line. Assuming that the intersection with the straight line is the apex A, the intersection of the first approximate straight line and the second approximate straight line is the apex B, and the intersection of the second approximate straight line with the third straight line is the apex C, the drive circuit Corresponds to a point on at least one line of the line AB, BC and CA and a point in which the light emitted from the light emitting unit is included within 3 steps of the MacAdam ellipse from the point on the line. It is characterized in that the toning control is performed so as to obtain a color.

Further, one aspect of the illumination control method according to the present invention is an illumination control method for controlling the toning of light emitted from a light emitting unit, where the chromaticity coordinates in the xy chromaticity diagram are (x, y). The light emitted from the light emitting unit is the first of three points (x, y) = (0.1704, 0.1107), (0.3151, 0.2442), (0.4477, 0.3436). It is characterized in that the toning control is performed so that the colors correspond to the points on the approximate straight line and the points included within 3 steps of the MacAdam ellipse from the points on the first approximate straight line.

It is possible to easily create light of multiple colors with a high relaxation effect.

It is a figure which shows the chromaticity coordinate, the equivalent luminance and the desk top equivalent with respect to the light of 30 colors presented to a subject at the time of the experiment concerning the subjective evaluation of the relaxation effect (the preference of light color). It is a figure which shows the evaluation scale at the time of performing the experiment about the subjective evaluation of the relaxation effect. It is a u'v'chromaticity diagram which plotted the light of five colors evaluated as preferable as a result of the experiment on the subjective evaluation of the relaxation effect. It is a figure for demonstrating the experiment about the physiological evaluation of the relaxation effect. As a result of the experiment on the physiological evaluation of the relaxation effect, it is a figure which shows the α wave appearance rate for each light color in each evaluation section. It is a figure which shows the spectrum for the suppression of melatonin secretion. It is an xy chromaticity diagram which plotted the light of 5 colors having a high relaxation effect shown in FIG. 3 and the light of the action spectrum of the circadian rhythm concerning melatonin secretion shown in FIG. It is a figure which shows three approximate straight lines corresponding to three sides of ΔABC in FIG. It is a figure for demonstrating the MacAdam ellipse 3step. It is sectional drawing of the lighting equipment which concerns on embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that all of the embodiments described below show a preferred specific example of the present invention. Therefore, among the components in the following embodiments, the components not described in the independent claims indicating the highest level concept of the present invention will be described as arbitrary components. Further, each figure is a schematic view and is not necessarily exactly illustrated.

First, the inventors of the present application focused on the light color of the illumination light and examined the relaxation effect. Specifically, an experiment on a relaxation effect was conducted on the 30 colors of light shown in FIG.

In this experiment, the 30 colors of light shown in FIG. 1 were presented to the subject (evaluator) as the presented light colors, and each of these 30 colors of light was lighted on a 7-step evaluation scale shown in FIG. We made a subjective evaluation of the color preference of. That is, with respect to the 30 colors of light shown in FIG. 1, a person's psychological evaluation was performed on the preference of the light color. This experiment was conducted on 21 male and female subjects, and the 7-grade evaluation scale was evaluated as 1 to 7 evaluation values.

Then, in this experiment, 90% of the subjects (19 out of 21) of the light colors having an average evaluation value of 5 or more evaluated the light color with 5 or more as a preferred light color by humans. It was found that the five colors of light surrounded by the solid line 1 are the preferred light colors. Specifically, 5 of light bulb color (color number: 5), blue (color number: 6), light pink (color number: 10), light green (color number: 18), light pink (color number: 21). It was found that one color of light was the preferred light color. That is, it is considered that the lights of these five colors have a relaxation effect. Moreover, when these five light colors are shown on the u'v'chromaticity diagram, the result shown in FIG. 3 is obtained.

Next, a verification experiment was conducted to verify whether or not the light color, which was highly evaluated in the above subjective evaluation experiment, has a relaxation effect without depending on a specific user. Specifically, three of the five light colors that were highly evaluated in the above subjective evaluation experiment (light bulb color (color number: 5), blue (color number: 6), light pink (color number: 10). )), The light color (deep red (color number: 8)) that was badly evaluated in the above subjective evaluation experiment, and the white light are the five light colors to be verified, and the relaxation of these light colors to be verified. A physiological evaluation of the effect was performed. The light of the light color that was poorly evaluated in the above subjective evaluation experiment is light having an average evaluation value of less than 3.

In this verification experiment, the desk was irradiated with light of each verification target light color, and the subjects were asked to perform calculation work as shown in FIG. Specifically, in the first 5 minutes (1st period T1), only the desk is illuminated to put the subject in a resting state (free vision), and in the next 15 minutes (2nd period T2), only the desk is continuously illuminated. In the next 15 minutes (3rd period T3), the subject was lit with the light of the light color to be verified to put the subject in a resting state, and the subject was placed in a resting state for the next 2 minutes (4th period T4). Then, let the subject close his eyes while continuously illuminating with the light of the light color to be verified.

Then, 3 minutes indicated by "PR" in the first period T1, 3 minutes indicated by "ST" in the second period T2, and 3 minutes each indicated by "R1" and "R2" in the third period T3. And, the physiological amount in 5 evaluation intervals of 1 minute indicated by "CL" in the 4th period T4 was measured. Specifically, the α wave of the subject was measured as a physiological quantity, and the appearance rate of the α wave in each evaluation section was calculated.

FIG. 5 shows the result. As shown in FIG. 5, in the evaluation sections of "R1" and "R2", the three light colors (bulb color (color number: 5), blue (color number: 6), and light pink (color) with high subjective evaluation were high. For number: 10)), the appearance rate of α waves was high, and the light color with poor subjective evaluation (for deep red (color number: 8), the appearance rate of α waves was low. That is, the light color with high subjective evaluation. It was found that the physiological evaluation was high for the light color and the physiological evaluation was low for the light color with a poor subjective evaluation. This supports the experimental results of the above subjective evaluation, and the light color with a high subjective evaluation has a subjective evaluation. This result suggests that the relaxation effect is higher than that of bad light color.

Similar results were obtained for light green (color number: 18) and light pink (color number: 21) among the above five light colors that were highly subjectively evaluated. That is, light green (color number: 18) and light pink (color number: 21) are also light colors having a high relaxation effect objectively.

From the results of these experiments, light bulb color (color number: 5), blue (color number: 6), light pink (color number: 10), light green (color number: 18), light pink (color number:: It was found that the five colors of light in 21) are the colors having a high relaxation effect.

On the other hand, melatonin secreted from the human brain has a relaxing effect on humans, but the secretion of melatonin is suppressed when a certain amount of light enters from the eyes during the secretion of melatonin. In recent years, it has been found that the degree of suppression of melatonin secretion differs depending on the wavelength (color) of light. FIG. 6 shows a spectrum of action that suppresses the secretion of melatonin. By illuminating according to the action spectrum of circadian rhythm based on the action spectrum shown in FIG. 6, not only the effect of arousal but also the improvement of concentration and the feeling of relaxation can be obtained.

Based on the above examination, the light of the five colors shown in FIG. 3 having a high relaxation effect and the light of the action spectrum of the circadianism related to melatonin secretion shown in FIG. 6 are converted into xy chromaticity coordinates and xy chromaticity. Expressed in FIG. 7 (CIE 1931), the result shown in FIG. 7 is obtained.

In FIG. 7, the points of "P5", "P6", "P10", "P18", and "P21" are light bulb color (color number: 5), blue (color number: 6), and light pink (color, respectively). It corresponds to number: 10), light green (color number: 18), and light pink (color number: 21), and shows five color light spots having a high relaxation effect shown in FIG. Further, the point of "PMlt" corresponds to the color corresponding to the peak wavelength of the spectrum shown in FIG. 6, and indicates the point of light of the color having a high relaxation effect on melatonin secretion.

As shown in FIG. 7, when a figure is drawn so as to pass through all six points of "P5", "P6", "P10", "P18", "P21", and "PMlt", these six points are , It turned out that it rides roughly on the side of one triangle (ΔABC). Therefore, it is considered that a space having a high relaxation effect can be created by controlling the toning of the illumination light on the straight line forming the side of this triangle (ΔABC).

In the xy chromaticity diagram shown in FIG. 7, the three vertices A, B, and C of ΔABC are the intersections of the three straight lines of the straight line AB, the straight line BC, and the straight line CA.

Here, the straight line AB is represented as a first approximate straight line L1 which is an approximate straight line of three points of “P6”, “P21”, and “P10”. That is, the first approximate straight line L1 is an approximate straight line of three points, P6 (0.1704, 0.1107), P21 (0.3151, 0.2442), and P10 (0.4477, 0.3436).

Further, the straight line BC is represented as a second approximate straight line L2 which is an approximate straight line of three points of "P18", "P5" and "A light source". The "A light source" is one of the standard light sources defined by the CIE, and is the light of a gas-filled tungsten bulb lit so that the color temperature is about 2856K. The chromaticity coordinates of the "A light source" in the xy chromaticity diagram are (x, y) = (0.4476, 0.4074). That is, the second approximate straight line L2 is an approximate straight line of three points, P18 (0.3474, 0.3909), P5 (0.4900, 0.4089), and A light source (0.4476, 0.4074). ..

Further, the straight line CA is represented as a third straight line L3 passing through two points of "PMlt" and the intersection of the straight line AB and the spectral locus. The chromaticity coordinates of "PMlt" are (x, y) = (0.135, 0.120). That is, the third straight line L3 is a straight line passing through two points of PMlt (0.135, 0.120), the first approximate straight line L1, and the intersection of the spectral loci.

When these three straight lines are calculated, the first approximate straight line L1, the second approximate straight line L2, and the third approximate straight line L3 are represented by the following equations. Further, FIG. 8 shows three straight lines calculated based on the calculation result.

First approximate straight line L1: y = 0.8411x-0.0228
Second approximate straight line L2: y = 0.1329x + 0.3455
Third straight line L3: y = 2.9226x-0.2745

In this way, the light color (chromaticity) corresponding to the points on the first approximate straight line L1 (straight line AB), the second approximate straight line L2 (straight line BC), and the third approximate straight line L3 (straight line CA) is obtained. It was found that a high relaxation effect can be obtained by controlling the toning of the illumination light.

Further, in the present embodiment, in order for a person to obtain a relaxation effect, it does not necessarily have to be light of the light color of a point on the first approximate straight line L1, the second approximate straight line L2, and the third approximate straight line L3. , The light may be of a color that can be perceived to be the same color as the light color corresponding to the points on the first approximate straight line L1, the second approximate straight line L2, and the third straight line L3.

Here, as shown in FIG. 9, the range of colors that a person can perceive to be the same color may be within 3 steps of the MacAdam ellipse. The MacAdam ellipse 3step has a just-noticeable difference of about 3 times the standard deviation for color discrimination. The MacAdam ellipse (3 steps) shown in FIG. 9 is shown as 10 times the size of the actual ellipse.

As a result of diligent studies by the inventor of the present application based on the above examination results, a light color corresponding to a point on at least one of the first approximate straight line L1, the second approximate straight line L2, and the third approximate straight line L3 is obtained. By controlling the toning of the illumination light so as to be, it is included in the range within 3 steps of the MacAdam elliptical line centered on at least one point of the first approximate straight line L1, the second approximate straight line L2, and the third approximate straight line L3. By controlling the toning of the illumination light so that the light color corresponds to the point, we were able to obtain the idea that a high relaxation effect can be obtained.

The lighting fixture and the lighting control method according to the present embodiment are based on such an idea. Hereinafter, as a specific means for realizing the present idea, a specific example of the lighting fixture 1 and the lighting control method according to the present embodiment will be described with reference to FIG. FIG. 10 is a cross-sectional view of the lighting fixture 1 according to the embodiment.

As shown in FIG. 10, the luminaire 1 according to the embodiment includes a light emitting unit 10, a drive circuit 20, a housing 30, and a translucent cover 40.

The light emitting unit 10 is a light emitting module that emits illumination light. In the present embodiment, the light emitting unit 10 is an LED module using an LED (Light Emitting Diode) as a light source. The light emitting unit 10 is housed in the housing 30.

The light emitting unit 10 emits light by the electric power supplied from the drive circuit 20. The light emitting unit 10 in the present embodiment can irradiate a plurality of light colors by controlling the color matching by the drive circuit 20.

The light emitting unit 10 includes, for example, a substrate 11, a first light source 12A, a second light source 12B, and a third light source 12C.

The substrate 11 is a mounting substrate for mounting the first light source 12A, the second light source 12B, and the third light source 12C. As the substrate 11, for example, a resin substrate, a ceramics substrate, a metal base substrate, or the like can be used.

The first light source 12A emits light of a light color corresponding to the chromaticity coordinates at the apex A of ΔABC in FIGS. 7 and 8. That is, the first light source 12A emits light of a color corresponding to the intersection (vertex A) of the first approximate straight line L1 and the third straight line L3. The light color of the light emitted by the first light source 12A is a color close to blue.

The second light source 12B emits light of a light color corresponding to the chromaticity coordinates at the apex B of ΔABC in FIGS. 7 and 8. That is, the second light source 12B emits light of a color corresponding to the intersection (vertex B) of the first approximate straight line L1 and the second approximate straight line L2. The light color of the light emitted by the second light source 12B is a color close to light orange.

The third light source 12C emits light of a light color corresponding to the chromaticity coordinates at the apex C of ΔABC in FIGS. 7 and 8. That is, the third light source 12C emits light of a color corresponding to the intersection (vertex C) of the second approximate straight line L2 and the third straight line L3. The light color of the light emitted by the third light source 12C is close to light green.

The first light source 12A, the second light source 12B, and the third light source 12C are packaged surface mount (SMD) type LED elements. As an example, each of the first light source 12A, the second light source 12B, and the third light source 12C has a package (container) made of white resin having a recess, and an LED chip (bare chip) primarily mounted on the bottom surface of the recess of the package. It has a sealing member enclosed in a recess of the package. The sealing member is made of a translucent resin material such as a silicone resin. The sealing member contains a wavelength conversion material such as a phosphor, and it is desired that the light wavelength-converted by the wavelength conversion material (for example, the light emitted from the phosphor) and the light emitted by the LED chip are mixed. It becomes light of light color. That is, each of the first light source 12A, the second light source 12B, and the third light source 12C has a desired color by combining one or more LED chips and one or more kinds of wavelength conversion materials (fluorescent materials, etc.). Can emit light.

The drive circuit 20 generates electric power for causing the light emitting unit 10 to emit light and supplies the electric power to the light emitting unit 10. That is, the drive circuit 20 has a function as a power supply circuit for causing the light emitting unit 10 to emit light. Specifically, the drive circuit 20 converts the AC power input to the luminaire 1 into DC power and supplies the DC power to the first light source 12A, the second light source 12B, and the third light source 12C. As a result, the first light source 12A, the second light source 12B, and the third light source 12C emit light.

Further, the drive circuit 20 controls the toning of the light emitted from the light emitting unit 10. That is, the drive circuit 20 has a function as a control circuit that controls the light emitting unit 10. Specifically, the drive circuit 20 controls the toning of the light emitted from the light emitting unit 10 by dimming the first light source 12A, the second light source 12B, and the third light source 12C. That is, the drive circuit 20 controls the toning of the light emitted from the light emitting unit 10 by adjusting the light output ratios of the first light source 12A, the second light source 12B, and the third light source 12C.

In the present embodiment, the drive circuit 20 has a color corresponding to at least a point in which the light emitted from the light emitting unit 10 is included within 3 steps of the MacAdam ellipse from the point on the first approximate straight line L1 and the point on the first approximate straight line L1. The color matching of the light emitting unit 10 is controlled so as to be. By controlling the color matching of the light emitting unit 10 by the drive circuit 20 in this way, the chromaticity coordinates (chromaticity) of the light emitted by the light emitting unit 10 are on the point on the first approximate straight line L1 and on the first approximate straight line L1. It will be located at a point included within 3 steps of the MacAdam ellipse from the point.

As an example, when the light emitted from the light emitting unit 10 is toned so as to be the light of the color corresponding to the point of only the first approximate straight line L1 (straight line AB), the output of the third light source 12C is set to zero (that is, that is). The third light source 12C is turned off), and the light output ratios of the first light source 12A and the second light source 12B may be appropriately adjusted. As a result, the light emitted from the light emitting unit 10 can be adjusted so as to have a specific light color within the range of the straight line AB.

Further, in the present embodiment, the drive circuit 20 corresponds to a point in which the light emitted from the light emitting unit 10 is included within 3 steps of the MacAdam ellipse from the point on the second approximate straight line L2 and the point on the second approximate straight line L2. The color matching of the light emitting unit 10 can be controlled so that the color is obtained.

For example, when the light emitted from the light emitting unit 10 is toned so as to be the light of the color corresponding to the point of only the second approximate straight line L2 (straight line BC), the output of the first light source 12A is set to zero and the second light source is set to zero. The light output ratios of 12B and the third light source 12C may be adjusted as appropriate. Thereby, the light emitted from the light emitting unit 10 can be adjusted so as to have a specific light color within the range of the straight line BC.

Further, in the present embodiment, the drive circuit 20 has a color corresponding to a point in which the light emitted from the light emitting unit 10 is included within 3 steps of the MacAdam ellipse from the point on the third straight line L3 and the point on the third straight line L3. The color matching of the light emitting unit 10 can be controlled so as to be.

For example, when the light emitted from the light emitting unit 10 is toned so as to be the light of the color corresponding to the point of only the third straight line L3 (straight line CA), the output of the second light source 12B is set to zero and the third light source 12C And the light output ratio of the first light source 12A may be adjusted as appropriate. As a result, the light emitted from the light emitting unit 10 can be adjusted so as to have a specific light color within the range of the straight line CA.

The housing 30 is a main body that houses the light emitting unit 10 and the drive circuit 20. The light emitting unit 10 is fixed to the housing 30. The housing 30 is made of resin, for example, but is not limited to this, and may be made of metal.

The translucent cover 40 is an optical component made of a translucent member, and is made of a transparent resin material such as acrylic or polycarbonate. The translucent cover 40 is provided in the opening of the housing 30 so as to cover the light emitting portion 10. The light-transmitting cover 40 is preferably a diffusion cover having light diffusivity (light scattering property). For example, by producing a light-transmitting cover 40 by dispersing a light-diffusing material such as light-reflecting fine particles in a light-transmitting resin material, the light-transmitting cover 40 can be made to have light diffusivity.

As described above, according to the luminaire 1 in the present embodiment, the light emitting unit 10 and the drive circuit 20 that controls the toning of the light emitted from the light emitting unit 10 are provided. Then, in the drive circuit 20, assuming that the chromaticity coordinates in the xy chromaticity diagram are (x, y), the light emitted from the light emitting unit 10 is (x, y) = P6 (0.1704, 0.1107). Within 3 steps of the MacAdam ellipse from the three points P21 (0.3151, 0.2442) and P10 (0.4477, 0.3436) on the first approximate straight line L1 and the points on the first approximate straight line L1. The toning control of the light emitted from the light emitting unit 10 is performed so that the color corresponds to the included points.

As a result, it is possible to easily create light of a plurality of colors having a high relaxation effect. Therefore, it is possible to easily create a plurality of spaces having a high relaxation effect. Therefore, although the image of the light source generally associated with the color of light differs, by using the lighting fixture 1 in the present embodiment, it is possible to create a light color that enhances the relaxation effect that matches the image at that time. ..

Further, in the present embodiment, in order to control the color matching of the light emitting unit 10 so that the light emitted from the light emitting unit 10 has a color corresponding to the point on the first approximate straight line L1, the first light source 12A and the first light source 12A The two light sources 12B are used, but the present invention is not limited to this, and the light emitting unit 10 can also emit light by adjusting the light output ratio using two light sources, each of which emits light at a point on the first approximate straight line L1. The toning control of the light emitting unit 10 can be performed so that the light has a color corresponding to the point on the first approximate straight line L1.

Further, in the lighting fixture 1 of the present embodiment, the drive circuit 20 includes the light emitted from the light emitting unit 10 within 3 steps of the MacAdam elliptical line from the point on the first approximate straight line L1 and the point on the first approximate straight line L1. In addition to controlling the toning of the light emitting unit 10 so that the color corresponds to the point, the light emitted from the light emitting unit 10 is (x, y) = P18 (0.3474, 0.3909). ), P5 (0.4900, 0.4089), A light source (0.4476, 0.4074), a MacAdam ellipse from the points on the second approximate straight line L2 and the points on the second approximate straight line L2. The toning control of the light emitting unit 10 is performed so that the color corresponds to the points included within 3 steps.

As a result, it is possible to create a plurality of light colors having a high relaxation effect. Therefore, it is possible to increase the choices of light that can be produced as light of a light color having a high relaxation effect.

In this case, in the present embodiment, in order to control the color matching of the light emitting unit 10 so that the light emitted from the light emitting unit 10 has a color corresponding to the point on the second approximate straight line L2, the second light source 12B and The third light source 12C is used, but the present invention is not limited to this, and the light output ratio can also be adjusted by using two light sources, each of which emits light at a point on the second approximate straight line L2. The toning control of the light emitting unit 10 can be performed so that the light to be emitted has a color corresponding to the point on the second approximate straight line L2.

Further, in the lighting fixture 1 of the present embodiment, the drive circuit 20 includes the light emitted from the light emitting unit 10 within 3 steps of the MacAdam elliptical line from the point on the first approximate straight line L1 and the point on the first approximate straight line L1. In addition to controlling the color matching of the light emitting unit 10 so as to have a color corresponding to the point, the light emitted from the light emitting unit 10 is (x, y) = PMlt (0.135, 0.120). ) And the point on the third straight line L3 passing through the two points of the first approximate straight line L1 and the intersection of the spectral loci, and the points included within 3 steps of the MacAdam elliptical line from the point on the third straight line L3. The toning control of the light emitting unit 10 may be performed as described above.

As a result, it is possible to create a plurality of light colors having a high relaxation effect. Therefore, it is possible to increase the choices of light that can be produced as light of a light color having a high relaxation effect.

In this case, in the present embodiment, in order to control the color matching of the light emitting unit 10 so that the light emitted from the light emitting unit 10 has a color corresponding to the point on the third straight line L3, the third light source 12C and the first One light source 12A is used, but the present invention is not limited to this, and the light emitted from the light emitting unit 10 can also be adjusted by adjusting the light output ratio using two light sources each emitting light at a point on the third straight line L3. The color matching of the light emitting unit 10 can be controlled so that the color corresponds to the point on the third approximate L3.

Further, in the lighting fixture 1 of the present embodiment, the drive circuit 20 includes the light emitted from the light emitting unit 10 within 3 steps of the MacAdam elliptical line from the point on the first approximate straight line L1 and the point on the first approximate straight line L1. In addition to controlling the color matching of the light emitting unit 10 so as to have a color corresponding to the point, the light emitted from the light emitting unit 10 is (x, y) = P18 (0.3474, 0.3909). ), P5 (0.4900, 0.4089), A light source (0.4476, 0.4074), a MacAdam ellipse from the points on the second approximate straight line L2 and the points on the second approximate straight line L2. The color matching of the light emitting unit 10 is controlled so that the color corresponds to the points contained within 3 steps, and the light emitted from the light emitting unit 10 is (x, y) = PMlt (0.135, 0.120). The color corresponds to the point on the third straight line L3 passing through the two points of the first approximate straight line L1 and the intersection of the spectral loci, and the points included within 3 steps of the MacAdam elliptical line from the point on the third straight line L3. The color matching of the light emitting unit 10 is controlled.

That is, the drive circuit 20 has a light color corresponding to a specific point on any three sides of ΔABC and a point included within 3 steps of the MacAdam ellipse from this specific point. The color matching of the light emitting unit 10 is controlled.

In this case, as the light emitting unit 10, the intersection of the first approximate straight line L1 and the third approximate straight line L3 (apical point A), the intersection point of the first approximate straight line L1 and the second approximate straight line L2 (vertical point B), and the second This can be achieved by using three light sources that emit light of a color corresponding to the three intersections of the approximate straight line L2 and the third straight line L3 (vertices C). Specifically, in the present embodiment, the first light source 12A, the second light source 12B, and the third light source 12C are used as the light emitting unit 10.

As a result, it is possible to create a plurality of light colors having a high relaxation effect. Therefore, it is possible to further increase the choices of light that can be produced as light of a light color having a high relaxation effect.

In the present embodiment, the drive circuit 20 is set so that the light emitted from the light emitting unit 10 is included within at least 3 steps of the MacAdam ellipse from the point on the first approximate straight line L1 and the point on the first approximate straight line L1. The toning control of the light emitting unit 10 was performed so as to obtain the corresponding color, but the present invention is not limited to this.

For example, in the drive circuit 20, the light emitted from the light emitting unit 10 is included within at least one point on the line segment AB, the line segment BC, and the line segment CA, and within 3 steps of the MacAdam ellipse from the point on the line segment. The color matching of the light emitting unit 10 may be controlled so that the color corresponds to the point. That is, the drive circuit 20 has a light emitting unit so that the light emitted from the light emitting unit 10 has a color corresponding to a point on an arbitrary side of ΔABC and a point included within 3 steps of the MacAdam ellipse from the point on the side. 10 toning control may be performed. For example, the drive circuit 20 may perform toning control of the light of the light emitting unit 10 so that the color corresponds not only to the line segment AB but also to only the line segment BC or only the line segment CA.

The present invention can also be realized as a lighting control method. Specifically, the illumination control method in the present embodiment is an illumination control method that controls the toning of the light emitted from the light emitting unit 10, and the chromaticity coordinates in the xy chromaticity diagram are defined as (x, y). Then, the light emitted from the light emitting unit 10 is (x, y) = P6 (0.1704, 0.1107), P21 (0.3151, 0.2442), P10 (0.4477, 0.3436). Toning of the light emitted from the light emitting unit 10 so that the colors correspond to the three points on the first approximate straight line L1 and the points included within 3 steps of the MacAdam ellipse from the points on the first approximate straight line L1. Take control.

As a result, it is possible to easily create light of a plurality of colors having a high relaxation effect.

The illumination control method is not limited to controlling the color matching of the light emitting unit 10 along the first approximate straight line L1 (straight line AB), and the light emitted from the light emitting unit 10 is line segment AB and line segment BC. And the toning control of the light emitted from the light emitting unit 10 so that the color corresponds to at least one point on the line segment CA and a point included within 3 steps of the MacAdam ellipse from the point on the line segment. You may go. That is, the light emitted from the light emitting unit 10 has a color corresponding to a point on an arbitrary side of ΔABC and a point included within 3 steps of the MacAdam ellipse from the point on the side. Color matching control may be performed.

(Modification example)
The lighting fixture and the lighting control method according to the present invention have been described above based on the embodiments, but the present invention is not limited to the above embodiments.

For example, in the above embodiment, the light emitting unit 10 is an SMD type LED module using an SMD type LED element, but the present invention is not limited to this. For example, the light emitting unit 10 may be a COB (Chip On Board) type LED module. In this case, each of the first light source 12A, the second light source 12B, and the third light source 12B includes one or more LED chips (bare chips) directly mounted on the substrate, a phosphor-containing resin that seals the LED chips, and the like. It is composed of a sealing member.

Further, in the above embodiment, the lighting fixture 1 can be used as a ceiling light (base light) for a relaxation room or a rest room for residential or non-residential use (office, building, store, etc.), for example. It is not limited to. For example, as a lighting fixture having a light emitting unit 10, it can be applied to a downlight, a spotlight, a pendant light, a stand light, and the like. Further, the lighting fixture 1 may be used as the main lighting or as the auxiliary lighting.

The present invention can also be realized as a lighting control system including a first light source 12A, a second light source 12B, and a third light source 12C.

Further, the present invention can be realized as a program for causing a device including a microprocessor such as a computer to execute the above-mentioned lighting control method, or can be realized as a computer-readable recording medium in which the program is stored. ..

In addition, in addition, the components and functions in the embodiments can be arbitrarily combined without departing from the spirit of the present invention and the forms obtained by applying various modifications that can be thought of by those skilled in the art to each embodiment and the modified examples. The form realized by the above is also included in the present invention.

1 Lighting equipment 10 Light emitting unit 12A 1st light source 12B 2nd light source 12C 3rd light source 20 Drive circuit

Claims (10)

Light emitting part and
It is provided with a drive circuit that controls the toning of the light emitted from the light emitting unit.
In the drive circuit, assuming that the chromaticity coordinates in the xy chromaticity diagram are (x, y), the light emitted from the light emitting unit is (x, y) = (0.1704, 0.1107), (0. It is included within 3 steps of the MacAdam ellipse from the points on the first approximate straight line which are the approximate straight lines of the three points of 3151, 0.2442) and (0.4477, 0.3436) and the points on the first approximate straight line. The toning control is performed so that the color corresponds to the point, and the color is controlled.
The light emitting unit has two light sources, each of which emits light at a point on the first approximate straight line.
lighting equipment. Light emitting part and
It is provided with a drive circuit that controls the toning of the light emitted from the light emitting unit.
In the drive circuit, assuming that the chromaticity coordinates in the xy chromaticity diagram are (x, y), the light emitted from the light emitting unit is (x, y) = (0.1704, 0.1107), (0. 3151, 0.2442), (0.4477, 0.3436) The points on the first approximate straight line, which are the approximate straight lines, and the points included within 3 steps of the MacAdam elliptical line from the points on the first approximate straight line. , (X, y) = (0.3474, 0.3909), (0.4900, 0.4089), (0.4476, 0.4074) on the second approximate straight line, which is an approximate straight line of three points. The toning control is performed so that the color corresponds to the point and the point included within 3 steps of the MacAdam elliptical line from the point on the second approximate straight line.
The light emitting unit has two light sources, each of which emits light at a point on the second approximate straight line.
lighting equipment. Light emitting part and
It is provided with a drive circuit that controls the toning of the light emitted from the light emitting unit.
In the drive circuit, assuming that the chromaticity coordinates in the xy chromaticity diagram are (x, y), the light emitted from the light emitting unit is (x, y) = (0.1704, 0.1107), (0. 3151, 0.2442), (0.4477, 0.3436) The points on the first approximate straight line, which are the approximate straight lines, and the points included within 3 steps of the MacAdam elliptical line from the points on the first approximate straight line. , (X, y) = (0.135, 0.120) and the point on the third straight line which is a straight line passing through the two points of the intersection of the first approximate straight line and the spectral locus, and the point on the third straight line. The toning control is performed so that the color corresponds to the points contained within 3 steps of the MacAdam ellipse.
The light emitting unit has two light sources, each of which emits light at a point on the third straight line.
lighting equipment. Light emitting part and
It is provided with a drive circuit that controls the toning of the light emitted from the light emitting unit.
In the drive circuit, assuming that the chromaticity coordinates in the xy chromaticity diagram are (x, y), the light emitted from the light emitting unit is (x, y) = (0.1704, 0.1107), (0. 3151, 0.2442), (0.4477, 0.3436) The points on the first approximate straight line, which are the approximate straight lines, and the points included within 3 steps of the MacAdam elliptical line from the points on the first approximate straight line. , (X, y) = (0.3474, 0.3909), (0.4900, 0.4089), (0.4476, 0.4074) on the second approximate straight line and the first A second passing through two points, a point included within 3 steps of the MacAdam elliptical line from a point on the two approximate straight lines, and the intersection of (x, y) = (0.135, 0.120) and the first approximate straight line and the spectral locus. The toning control is performed so that the colors correspond to the points on the three straight lines and the points included within 3 steps of the MacAdam ellipse from the points on the third straight line.
The light emitting unit is an intersection of the first approximate straight line and the third straight line, an intersection of the first approximate straight line and the second approximate straight line, and an intersection of the second approximate straight line and the third straight line. It has three light sources that emit light of the color corresponding to the three intersections.
lighting equipment. Ru with a translucent cover having a light diffusing property to cover the light emitting portion,
The lighting fixture according to any one of claims 1 to 4. The toning control is executed based on a pre-stored program.
The lighting fixture according to any one of claims 1 to 5. It is a lighting control method that controls the toning of light emitted from the light emitting unit.
Assuming that the chromaticity coordinates in the xy chromaticity diagram are (x, y), the light emitted from the light emitting unit is (x, y) = (0.1704, 0.1107), (0.3151, 0.2442). ), (0.4477, 0.3436) and the points on the first approximate straight line, and the points included within 3 steps of the MacAdam ellipse from the points on the first approximate straight line. Perform the toning control and
The light emitting unit has two light sources, each of which emits light at a point on the first approximate straight line.
Lighting control method. It is a lighting control method that controls the toning of light emitted from the light emitting unit.
Assuming that the chromaticity coordinates in the xy chromaticity diagram are (x, y), the light emitted from the light emitting unit is (x, y) = (0.1704, 0.1107), (0.3151, 0.2442). ), (0.4477, 0.3436), points on the first approximate straight line, points included within 3 steps of the MacAdam elliptical line from the points on the first approximate straight line, and (x, y) = (0). .3474, 0.3909), (0.4900, 0.4089), (0.4476, 0.4074), a point on the second approximate straight line, which is an approximate straight line of three points, and a point on the second approximate straight line. The toning control is performed so that the color corresponds to the points contained within 3 steps of the MacAdam ellipse from the points.
The light emitting unit has two light sources, each of which emits light at a point on the second approximate straight line.
Lighting control method. It is a lighting control method that controls the toning of light emitted from the light emitting unit.
Assuming that the chromaticity coordinates in the xy chromaticity diagram are (x, y), the light emitted from the light emitting unit is (x, y) = (0.1704, 0.1107), (0.3151, 0.2442). ), (0.4477, 0.3436), points on the first approximate straight line, points included within 3 steps of the MacAdam elliptical line from the points on the first approximate straight line, and (x, y) = (0). .135, 0.120) and the point on the third straight line that passes through the two points of the intersection of the first approximate straight line and the spectral locus, and the points included within 3 steps of the MacAdam elliptical line from the point on the third straight line. The toning control is performed so that the color corresponds to
The light emitting unit has two light sources, each of which emits light at a point on the third straight line.
Lighting control method. It is a lighting control method that controls the toning of light emitted from the light emitting unit.
Assuming that the chromaticity coordinates in the xy chromaticity diagram are (x, y), the light emitted from the light emitting unit is (x, y) = (0.1704, 0.1107), (0.3151, 0.2442). ), (0.4477, 0.3436), points on the first approximate straight line, points included within 3 steps of the MacAdam elliptical line from the points on the first approximate straight line, and (x, y) = (0). .3474, 0.3909), (0.4900, 0.4089), (0.4476, 0.4074) The MacAdam ellipse from the points on the second approximate straight line and the points on the second approximate straight line. A point on a third straight line passing through two points included within 3 steps, (x, y) = (0.135, 0.120) and the intersection of the first approximate straight line and the spectral locus, and the third The toning control is performed so that the color corresponds to the points included within 3 steps of the MacAdam elliptical line from the points on the straight line.
The light emitting unit is an intersection of the first approximate straight line and the third straight line, an intersection of the first approximate straight line and the second approximate straight line, and an intersection of the second approximate straight line and the third straight line. It has three light sources that emit light of the color corresponding to the three intersections.
Lighting control method.

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