JP2021170445A - Lighting fixture and lighting system - Google Patents

Abstract

To provide a lighting fixture and the like, capable of effectively making people feel warm and cold.SOLUTION: A first lighting fixture 10 includes a first light source 11, a second light source 12 and a light source control section 15. The first light source 11 emits a first fixed-color light having a light color of a chromaticity coordinate positioned within a quadrilateral area C1 having four vertices of (x,y)=(0.380,0.330);(x,y)=(0.510,0.360); (x,y)=(0.470,0.440); and (x,y)=(0.350,0.420). The second light source 12 emits a second fixed-color light having a light color of a chromaticity coordinate positioned within a quadrilateral area C2 having four vertices of (x,y)=(0.200,0.175); (x,y)=(0.275,0.270); (x,y)=(0.220,0.360); and (x,y)=(0.155,0.275). The light source control section 15 adjusts the light quantity of each of the first light source 11 and the second light source 12 based on the first dimming signal.SELECTED DRAWING: Figure 3

Description

The present invention relates to luminaires and lighting systems.

It is known that the temperature felt by a person changes according to the color of the light emitted by a lighting fixture or the like, that is, the person feels a feeling of warmth and coldness. For example, a person feels cold (cool feeling) when he sees a cold light color, and warm (warm feeling) when he sees a warm light color.

Taking advantage of this, for example, Patent Document 1 discloses a lighting device that controls the light color of a light source based on humidity and temperature in order to maintain or improve human comfort.

Japanese Unexamined Patent Publication No. 2009-230907

However, in a conventional lighting fixture such as the lighting device described in Patent Document 1, the light color is changed within a specified range of the correlated color temperature, and the effect of giving a feeling of warmth and coldness, particularly a feeling of coldness, is not sufficient. There is.

Therefore, an object of the present invention is to provide a lighting fixture or the like that can effectively make a person feel warm and cold.

The lighting fixture according to one aspect of the present invention is a lighting fixture in which the amount and color of the emitted light can be adjusted, and in the xy chromaticity diagram of the CIE1931 color space, (x, y) = (0.380, 0.330), (x, y) = (0.510, 0.360), (x, y) = (0.470, 0.440) and (x, y) = (0.350, 0. In the xy chromaticity diagram of the CIE1931 color space, the first light source that has the light color of the chromaticity coordinates located in the square region with the four points of 420) as the apex and emits the first light of the fixed light color. (X, y) = (0.200, 0.175), (x, y) = (0.275, 0.270), (x, y) = (0.220, 0.360) and (x) , Y) = (0.155, 0.275) A second light source that has a light color of chromaticity coordinates located in a square region with four points as vertices and emits a second light of a fixed light color. , A light source control that acquires a dimming signal for adjusting the light amount and light color of the light emitted by the lighting fixture and adjusts the light amount of each of the first light source and the second light source based on the dimming signal. It has a part.

Further, the lighting system according to one aspect of the present invention includes the first luminaire which is the luminaire and the signal generation unit which generates the dimming signal, and the light source control unit is described from the signal generation unit. Acquire a dimming signal.

Further, the lighting system according to one aspect of the present invention includes a first lighting fixture capable of adjusting the amount and color of the emitted light and a signal generation unit, and the first lighting fixture is xy in the CIE1931 color space. In the chromaticity diagram, (x, y) = (0.405, 0.262), (x, y) = (0.634, 0.319), (x, y) = (0.460, 0. 510) and (x, y) = (0.330, 0.482) have a chromaticity coordinated light color located in a square region with four points as apex, and a fixed first light of light color. In the xy chromaticity diagram of the first light source and the CIE1931 color space, (x, y) = (0.181,0.032), (x, y) = (0.315,0.200), (x) , Y) = (0.180, 0.430) and (x, y) = (0.069, 0.283). However, it has a second light source that emits a second light of a fixed light color and a light color inside the white basic color name region circle defined in JIS Z8110-1995, and a third light of a fixed light color. A third light source to be emitted and a dimming signal for adjusting the amount and color of the light emitted by the first lighting fixture are acquired from the signal generation unit, and based on the dimming signal, the first light source, The second light source and the light source control unit for adjusting the amount of light of each of the third light sources are provided, and the signal generation unit is (x, y) = (0.380, 0) in the xy chromaticity diagram of the CIE1931 color space. .330), (x, y) = (0.510, 0.360), (x, y) = (0.470, 0.440) and (x, y) = (0.350, 0.420) ) Is a light having a light color of chromaticity coordinates located in a square region having four points as vertices, or in an xy chromaticity diagram of the CIE1931 color space, (x, y) = (0.200, 0.175). ), (X, y) = (0.275, 0.270), (x, y) = (0.220, 0.360) and (x, y) = (0.155, 0.275). The dimming signal for irradiating the first lighting fixture with light having a light color having chromaticity coordinates located in a square region having four points as apex is generated.

According to the lighting equipment and the like according to the present invention, it is possible to effectively make a person feel warm and cold.

FIG. 1 is a diagram schematically showing a configuration of a lighting system according to an embodiment. FIG. 2 is a block diagram showing a configuration of a lighting system according to an embodiment. FIG. 3 is an xy chromaticity diagram of the CIE 1931 color space for explaining the light color of the light emitted by the first light source, the second light source, and the third light source of the first luminaire according to the embodiment. FIG. 4 is a schematic view showing a cross section of a first light source, a second light source, and a third light source of the first luminaire according to the embodiment. FIG. 5 is an xy chromaticity diagram of the CIE 1931 color space showing an example of the toning range of the first luminaire according to the embodiment. FIG. 6 is a diagram showing an example of the emission spectrum of the second light emitted by the second light source of the first luminaire according to the embodiment. FIG. 7 is a flowchart of an operation example 1 of the signal generation unit according to the embodiment. FIG. 8 is a flowchart of operation example 2 of the signal generation unit according to the embodiment. FIG. 9 is a flowchart of an operation example 3 of the signal generation unit according to the embodiment. FIG. 10A is a diagram for explaining an example of the relationship between room temperature and comfort. FIG. 10B is a diagram for explaining an example of the relationship between room temperature and comfort. FIG. 11 is a block diagram showing a configuration of a lighting system according to a modified example of the embodiment. FIG. 12 is an xy chromaticity diagram of the CIE 1931 color space for explaining the light color of the light emitted by the first light source and the second light source according to the modified example of the embodiment.

Hereinafter, embodiments will be specifically described with reference to the drawings. It should be noted that all of the embodiments described below show comprehensive or specific examples. The numerical values, shapes, materials, components, arrangement positions and connection forms of the components, steps, the order of steps, etc. shown in the following embodiments are examples, and are not intended to limit the present invention. In addition, it is a schematic diagram in which emphasis, omission, or ratio is adjusted as appropriate to show the present invention, and it is not necessarily exactly illustrated and may differ from the actual shape, positional relationship, and ratio. ..

(Embodiment)
Hereinafter, the lighting fixture and the lighting system according to the present embodiment will be described.

[Lighting system configuration]
First, the configuration of the lighting system according to the present embodiment will be described with reference to FIGS. 1 and 2.

FIG. 1 is a diagram schematically showing a configuration of a lighting system 1 according to the present embodiment. FIG. 2 is a block diagram showing a configuration of the lighting system 1 according to the present embodiment.

The lighting system 1 includes a first lighting fixture 10, a second lighting fixture 20, a lighting control device 30, and an actuator 40. The lighting control device 30 is provided with a signal generation unit 31 that generates a first dimming signal, which is an example of a dimming signal for adjusting the amount and color of light emitted by the first luminaire 10. .. In the present specification, the first luminaire 10 is an example of a luminaire. Although not shown, the first luminaire 10, the second luminaire 20, the lighting control device 30, and the actuator 40 are each supplied with electric power for operation from an internal power source such as a battery or an external power source. .. The lighting system 1 is installed in an indoor space such as an office, a factory, a commercial facility, a hotel or a restaurant.

The first luminaire 10 is a luminaire whose amount of light to be irradiated and the color of light can be adjusted. The first luminaire 10 irradiates light of a light color that can make a person feel warm and cold. The first luminaire 10 is a luminaire that mainly irradiates a wall surface and / or a ceiling of an indoor space with light. The first lighting fixture 10 is, for example, a lighting fixture for space production, and is used for space production of an indoor space. Specifically, the first luminaire 10 is, for example, a luminaire such as a coffer luminaire, a cornice luminaire, a cove luminaire, or a floor stand luminaire. In the illustrated example, the first luminaire 10 is installed on the ceiling, but may be installed on the wall or upright from the floor. In FIG. 1, the number of the first lighting fixtures 10 included in the lighting system 1 is two, but the number of the first lighting fixtures 10 included in the lighting system 1 does not have to be two, but one. It may be 3 or more.

The second luminaire 20 is a luminaire that irradiates white light. The second luminaire 20 is a luminaire that mainly irradiates the floor surface of the indoor space with light. The second luminaire 20 is, for example, a luminaire for work, and is a light required for the work of a worker existing in an indoor space (for example, reading, writing, visual work, manual work, electronic device operation, meal, etc.). Irradiate. Specifically, the second luminaire 20 is, for example, a luminaire such as a downlight, a ceiling light, or a base light. In FIG. 1, the number of the second lighting fixtures 20 included in the lighting system 1 is three, but the number of the second lighting fixtures 20 included in the lighting system 1 does not have to be three, and is one or two. It may be one, or four or more.

The second luminaire 20 may be a luminaire that includes a plurality of light sources and is capable of dimming and toning by adjusting the amount of light of each of the plurality of light sources. The white light emitted by the second luminaire 20 is toned, for example, with a correlated color temperature of 2700 K to 7200 K. Further, the white light emitted by the second luminaire 20 may be toned between the correlated color temperature of 2700K and 6500K.

Here, the range in which the first luminaire 10 and the second luminaire 20 irradiate light will be described.

The second luminaire 20 irradiates the work area A where the worker works with light. The center of the range in which the second luminaire 20 irradiates light (the direction in which the optical axis faces) is located, for example, on the floor surface of an indoor space or a horizontal surface such as a work desk.

The first luminaire 10 irradiates light outside the range to which the second luminaire 20 irradiates light. The range in which the first luminaire 10 irradiates light is a part (for example, less than half of the range in which the first luminaire 10 irradiates light) overlaps with the range in which the second luminaire 20 irradiates light. It does not have to overlap. The center of the range in which the first luminaire 10 irradiates light is located outside the range in which the second luminaire 20 irradiates light, for example. Further, the center of the range in which the first luminaire 10 irradiates light is located, for example, on the vertical surface of a wall surface, a shelf, a partition, or the like of an indoor space. The first luminaire 10 does not irradiate the work area A with light, for example. Further, as shown in the drawing, when a plurality of first lighting fixtures 10 are installed, the range in which each of the plurality of first lighting fixtures 10 irradiates light is such that the range in which the second luminaire 20 irradiates light is sandwiched. May be located at.

In this way, the second luminaire 20 irradiates the work area A with white light, and the first luminaire 10 outside the irradiation range of the second luminaire 20 makes the person described later feel warm and cold. Irradiate colored light. When working in chromatic light such as light of light color that makes a person feel warm and cold, the worker may feel uncomfortable and the work efficiency of the worker is reduced. In the indoor space where the lighting system 1 is installed, the worker does not have to work in chromatic light such as light of light color that makes a person feel warm and cold, and the worker does not have to work in white light for work. You can work in the irradiated work area A. Therefore, the lighting system 1 can control the impression of the indoor space and effectively make the person feel warm and cold without deteriorating the workability of the worker.

The lighting control device 30 is a control device that generates a first dimming signal for adjusting the amount of light and the color of the light emitted by the first lighting fixture 10. Specifically, the signal generation unit 31 of the lighting control device 30 generates the first dimming signal. The lighting control device 30 generates a first dimming signal based on information from various sensors and the like or operation information from the actuator 40. The lighting control device 30 transmits the generated first dimming signal to the first lighting fixture 10. The lighting control device 30 is installed in an indoor space, for example, integrally with the first lighting fixture 10. The lighting control device 30 may be installed independently of the first lighting fixture 10. Further, when the lighting system 1 includes a plurality of first lighting fixtures 10, the lighting control device 30 may be provided integrally with each of the first lighting fixtures 10. Further, at least one lighting control device 30 is provided integrally with at least one first lighting fixture 10, and at least one lighting control device 30 transmits a first dimming signal to the plurality of first lighting fixtures 10. May be good.

The actuator 40 is a remote controller for accepting a user's operation and operating the first luminaire 10 and the second luminaire 20 according to the accepted operation. The operator 40 is operation information which is information about lighting, extinguishing, dimming, toning, etc. of the first lighting fixture 10 and the second lighting fixture 20 for operating the first lighting fixture 10 and the second lighting fixture 20. To send. The actuator 40 receives an operation from the user and generates operation information based on the accepted operation. The actuator 40 transmits the operation information to the signal generation unit 31. The actuator 40 is, for example, a wall-mounted controller. Further, the actuator 40 may be an operation remote controller, a wall switch, or the like. The actuator 40 may be realized by installing an application program on a general-purpose mobile terminal such as a smartphone or a tablet terminal.

Next, the first lighting fixture 10 and the lighting control device 30 of the lighting system 1 will be described in detail.

[1st lighting fixture]
As shown in FIG. 2, the first luminaire 10 includes a first light source 11, a second light source 12, a third light source 13, and a light source control unit 15.

First, the light color of the light emitted by the first light source 11, the second light source 12, and the third light source 13 will be described. FIG. 3 is an xy chromaticity diagram of the CIE 1931 color space for explaining the light color of the light emitted by the first light source 11, the second light source 12, and the third light source 13 of the first luminaire 10 according to the present embodiment. be.

The first light source 11, the second light source 12, and the third light source 13 are light sources that emit light of different light colors, respectively. The first luminaire 10 does not have to include the third light source 13.

The first light source 11 emits first light having a fixed light color. As shown in FIG. 3, the first light is (x, y) = (0.380, 0.330), (x, y) = (0.510, in the xy chromaticity diagram of the CIE1931 color space. 0.360), (x, y) = (0.470, 0.440) and (x, y) = (0.350, 0.420) are located in the square region C1 having four points as vertices. It has a light color of chromaticity coordinates. The light color of the first light is a warm color. Since the first light has a light color having chromaticity coordinates located in the region C1, the luminous efficiency of the first light source 11 and the effect of making a person feel warm by the first light can be enhanced.

The second light source 12 emits a second light having a fixed light color. As shown in FIG. 3, the second light is (x, y) = (0.200, 0.175), (x, y) = (0.275, in the xy chromaticity diagram of the CIE 1931 color space. 0.270), (x, y) = (0.220, 0.360) and (x, y) = (0.155, 0.275) are located in the square region C2 having four points as vertices. It has a light color of chromaticity coordinates. The light color of the second light is a cool light color. By having the second light have the light color of the chromaticity coordinates located in the region C2, it is possible to enhance the luminous efficiency of the second light source 12 and the effect of making the person feel cold by the second light.

For example, in the xy chromaticity diagram of the CIE 1931 color space, it passes through (x, y) = (0.302,0.692) and the equal energy white point (x, y) = (0.333, 0.333). The light color of the chromaticity coordinates on the positive direction side of the x-axis with the straight line as the boundary is a warm color. Further, for example, the light color of the chromaticity coordinates on the negative direction side of the x-axis with the straight line as the boundary is a cold color.

The third light source 13 emits a third light having a fixed light color. As shown in FIG. 3, the third light has the light color inside the white basic color name region circle C3 as defined in JIS Z8110-1995. The white basic color name region circle C3 defined in JIS Z8110-1995 is an elliptical type: center coordinates (0.333, 0.333), semi-minor axis a = 0.070 in the xy chromaticity diagram of the CIE1931 color space. , The semi-minor axis b = 0.025, and the inclination θ (deg) = 59 of the major axis with respect to the x-axis. When the first luminaire 10 includes a third light source 13 that emits a white third light, it becomes easy to adjust the light color of the light emitted by the first luminaire 10.

Further, the maximum amount of the second light that can be emitted by the second light source 12 may be larger than the maximum amount of the first light that can be emitted by the first light source 11. For example, the maximum amount of second light that can be emitted by the second light source 12 is increased by increasing the amount of current that can be supplied or the number of second light emitting elements 121 that will be described later. As a result, the first luminaire 10 irradiates the second light having a cold light color, which requires a larger amount of light to make a person feel comfortable than the warm light color, with a large amount of light. can do.

When a plurality of light sources among the first light source 11, the second light source 12, and the third light source 13 emit light, the first luminaire 10 irradiates the light generated by mixing the light of the emitted light sources.

Next, the details of the configurations of the first light source 11, the second light source 12, and the third light source 13 will be described. FIG. 4 is a schematic view showing a cross section of a first light source 11, a second light source 12, and a third light source 13 of the first lighting fixture 10 according to the present embodiment.

As shown in FIG. 4, the first light source 11 includes a first light emitting element 111, a first fluorescent member 112, and a sealing member 200. The first light source 11 is a COB (Chip On Board) type light emitting module, in which the first light emitting element 111 is mounted on the substrate 300 and the first fluorescent member 112 is sealed by the sealing member 200 dispersed therein. Has been done. The first light emitted by the first light source 11 is a mixed light of light emitted by the first light emitting element 111 and the first fluorescent member 112. Further, although not shown, the first light emitting element 111 is provided with metal wiring or the like for supplying electric power.

The second light source 12 has a second light emitting element 121, a second fluorescent member 122, and a sealing member 200. The second light emitted by the second light source 12 is a mixed light of light emitted by the second light emitting element 121 and the second fluorescent member 122. Further, the third light source 13 has a third light emitting element 131, a third fluorescent member 132, and a sealing member 200. The third light emitted by the third light source 13 is a mixed light of light emitted by the third light emitting element 131 and the third fluorescent member 132. Since the second light source 12 and the third light source 13 have the same structure as the first light source 11, detailed description thereof will be omitted. The second light source 12 and the third light source 13 are supplied with electric power by a circuit different from that of the first light source 11.

Further, the first light source 11, the second light source 12, and the third light source 13 may be SMD (Surface Mount Devices) type light emitting modules. Further, the first light source 11, the second light source 12, and the third light source 13 may be remote phosphor type light emitting modules. The number of the first light source 11, the second light source 12, and the third light source 13 may be appropriately adjusted according to the purpose of use.

The first light emitting element 111, the second light emitting element 121, and the third light emitting element 131 are, for example, a blue LED (Light Emitting Diode) or a purple LED. The blue LED emits blue light having a major emission peak in the wavelength range of 430 nm to 460 nm. The violet LED emits violet light with a major emission peak in the wavelength range of 380 nm to 430 nm. Examples of the blue LED and the purple LED include gallium nitride based LEDs. The first light emitting element 111, the second light emitting element 121, and the third light emitting element 131 may be LEDs having light emitting peaks having the same wavelength, or may be LEDs having light emitting peaks having different wavelengths. From the viewpoint of making the current-voltage characteristics the same and facilitating the design of the power supply circuit, for example, the first light emitting element 111, the second light emitting element 121, and the third light emitting element 131 are types of LEDs having the same light emitting peak wavelength. .. The first light emitting element 111, the second light emitting element 121, and the third light emitting element 131 may be collectively referred to as "light emitting element".

The first fluorescent member 112 is excited by at least a part of the light of the first light emitting element 111 and emits light having a wavelength longer than that of the light of the first light emitting element 111. The first fluorescent member 112 includes, for example, at least one of a red fluorescent substance and a yellow fluorescent substance. The type of the phosphor contained in the first fluorescent member 112 may be one type or two or more types.

The second fluorescent member 122 is excited by at least a part of the light of the second light emitting element 121 and emits light having a wavelength longer than that of the light of the second light emitting element 121. The second fluorescent member 122 includes, for example, at least one of a blue fluorescent substance and a green fluorescent substance. The type of the phosphor contained in the second fluorescent member 122 may be one type or two or more types.

The third fluorescent member is excited by at least a part of the light of the third light emitting element 131 and emits light having a wavelength longer than that of the light of the third light emitting element 131. The third fluorescent member 132 includes, for example, at least one of a red fluorescent substance, a yellow fluorescent substance, a green fluorescent substance, and a blue fluorescent substance. The first fluorescent member 112, the second fluorescent member 122, and the third fluorescent member 132 may be collectively referred to as "fluorescent member".

The red phosphor is excited by the light of a blue LED or a purple LED and emits red light having a major emission peak in the wavelength range of 600 nm to 650 nm. Examples of the red phosphor include Ca-α-SiAlON: Eu ²⁺ , CaAlSiN ₃ : Eu ²⁺ , (Sr, Ca) AlSiN ₃ : Eu ²⁺ , Sr ₂ Si ₅ N ₈ : Eu ²⁺ , Sr ₂ (Si, Al). ) ₅ (N, O) ₈ : Eu ²⁺ , CaS: Eu ²⁺ and La ₂ O ₂ S: Eu ^{2+ and the} like.

The yellow phosphor is excited by the light of a blue LED or a purple LED and emits yellow light having a major emission peak in the wavelength range of 540 nm to 600 nm. Examples of the yellow phosphor include (Y, Gd) ₃ Al ₅ O ₁₂ : Ce ³⁺ , Y ₃ Al ₅ O ₁₂ : Ce ³⁺ , Pr ³⁺ , (Tb, Gd) ₃ Al ₅ O ₁₂ : Ce ³⁺ , ( Sr, Ba) ₂ SiO ₄ : Eu ²⁺ , (Sr, Ca) ₂ SiO ₄ : Eu ²⁺ , CaSi ₂ O ₂ N ₂ : Eu ²⁺ , Ca-α-SiAlON: Eu ²⁺ , Y ₂ Si ₄ N ₆ C: Ce ³⁺ and CaGa ₂ S ₄ : Eu ^{2+ and the} like can be mentioned.

The blue phosphor is excited by the light of a blue LED or a purple LED and emits blue light having a major emission peak in the wavelength range of 440 nm to 480 nm. Examples of the blue phosphor include (Ca, Sr, Ba) MgAl ₁₀ O ₁₇ : Eu ²⁺ , (Ba, Sr, Ca, Mg) ₂ SiO ₄ : Eu ²⁺ , (Mg, Ca, Sr, Ba) Si ₂ O ₂ N ₂ : Eu ²⁺ , (Ba, Sr, Ca) ₃ Si ₆ O ₁₂ N ₂ : Eu ²⁺ and (Ba, Sr, Ca) ₃ Si ₆ O ₉ N ₄ : Eu ^{2+ and the} like.

The green phosphor is excited by the light of a blue LED or a purple LED and emits green light having a major emission peak in the wavelength range of 480 nm to 540 nm. Examples of the green phosphor include Y ₃ Al ₅ O ₁₂ : Ce ³⁺ , Tb ₃ Al ₅ O ₁₂ : Ce ³⁺ , BaY ₂ SiAl ₄ O ₁₂ : Ce ³⁺ , Ca ₃ Sc ₂ Si ₃ O 1 ₂ : Ce ³⁺ , and so on. (Ba, Sr) ₂ SiO ₄ : Eu ²⁺ , CaSc ₂ O ₄ : Ce ³⁺ , Ba ₃ Si ₆ O1 ₂ N ₂ : Eu ²⁺ , β-SiAlON: Eu ²⁺ and SrGa ₂ S ₄ : Eu ^{2+ and the} like. ..

It should be noted that the example of the phosphors of each color described above is an example, and in general, the fluorescent substances have a large variation in characteristics, and the fluorescent substances having the composition formulas classified and exemplified for each color described above are the classified colors. It may emit different colors of light.

Types of phosphors contained in each of the first fluorescent member 112, the second fluorescent member 122, and the third fluorescent member 132, the blending ratio when a plurality of types of phosphors are contained, and the blending amount of the phosphors in the sealing member 200. Is adjusted to be the light color of each of the target first light, second light, and third light.

The sealing member 200 is a translucent resin material that individually seals the first light emitting element 111, the second light emitting element 121, and the third light emitting element 131. As the translucent resin material, a material that transmits light emitted by the first light emitting element 111, the second light emitting element 121, the third light emitting element 131, the first fluorescent member 112, the second fluorescent member 122, and the third fluorescent member 132. If so, there is no particular limitation. As the translucent resin material, for example, a silicone resin, an epoxy resin, a urea resin, or the like is used. In FIG. 2, the first light source 11, the second light source 12, and the third light source 13 have the same type of sealing member 200, but the first light source 11, the second light source 12, and the third light source 13 have the same type of sealing member 200. The light source 13 may have a different type of sealing member.

The substrate 300 is a substrate on which the first light source 11, the second light source 12, and the third light source 13 are mounted. The substrate 300 is, for example, a metal base substrate, a resin substrate, or a ceramic substrate.

The light source control unit 15 acquires the first dimming signal by receiving the first dimming signal from the signal generation unit 31 from the outside, and based on the first dimming signal, the first light source 11 , The amount of light of each of the second light source 12 and the third light source 13 is adjusted. As a result, the light emitted by the first luminaire 10 is dimmed and toned.

For example, the light source control unit 15 independently supplies power to the first light source 11, the second light source 12, and the third light source 13 by a power supply circuit, and changes the amount of current individually to change the amount of the first light and the second light. The amount of light of each of the light and the third light is adjusted. Further, the control of the light source control unit 15 includes turning on and off. Specifically, the light source control unit 15 includes a dimming switch, a power supply circuit, a current control circuit, a dimming circuit, and the like. The light source control unit 15 may further include a memory and a processor. Further, the light source control unit 15 may include a communication circuit or the like for remote control.

The light source control unit 15 may acquire the first dimming signal by receiving information or operation information from various sensors and generating a first dimming signal based on the received information.

[Lighting control device]
Next, the lighting control device 30 will be described. As shown in FIG. 2, the lighting control device 30 includes a signal generation unit 31, a communication unit 32, a clock circuit 33, a temperature sensor 34, and an optical sensor 35. At least one of the communication unit 32, the clock circuit 33, the temperature sensor 34, and the optical sensor 35 may not be provided in the lighting control device 30.

The signal generation unit 31 generates a first dimming signal for adjusting the amount of light and the color of the light emitted by the first luminaire 10. The signal generation unit 31 is directly connected to, for example, the light source control unit 15 of the first lighting fixture 10, and transmits the generated first dimming signal to the light source control unit 15. When the first lighting fixture 10 and the lighting control device 30 are provided apart from each other, the signal generation unit 31 uses the communication unit 32 to communicate with the light source control unit 15 by wire or wireless communication. The first dimming signal may be transmitted.

Further, the signal generation unit 31 may generate a second dimming signal for adjusting the amount of light and the color of the light emitted by the second luminaire 20. In this case, the signal generation unit 31 transmits the second dimming signal to the second luminaire 20 by, for example, the communication unit 32 by wired or wireless communication.

For example, the signal generation unit 31 acquires operation information from the actuator 40 using the communication unit 32, and based on the acquired operation information, operates the first lighting fixture 10 by an operation received by the operator 40 from the user. Generates the first dimming signal. Further, the signal generation unit 31 may generate a second dimming signal for operating the second lighting fixture 20 by the operation received from the user by the operator 40 based on the acquired operation information.

Further, the signal generation unit 31 acquires, for example, environmental information which is information indicating at least one of the set temperature, temperature, season, and time zone of the air conditioner 50. The signal generation unit 31 generates a first dimming signal for irradiating the first luminaire 10 with light of a light color (for example, a cold color or a warm color) determined based on the acquired environmental information.

Further, the signal generation unit 31 acquires, for example, light color information which is information indicating the correlated color temperature of the light emitted by the second luminaire 20. The signal generation unit 31 generates a first dimming signal for irradiating the first lighting fixture 10 with light of a light color (for example, a cold color or a warm color) determined based on the acquired light color information.

Further, the signal generation unit 31 acquires, for example, light quantity information which is information indicating the light quantity of the light emitted by the second luminaire 20. The signal generation unit 31 generates a first dimming signal for irradiating the first luminaire 10 with a light amount determined based on the acquired light amount information.

Further, the signal generation unit 31 stores an information table in which each of the environmental information, the light color information, and the light amount information is associated with the light color and / or the light amount of the light to be applied to the first luminaire 10. The signal generation unit 31 determines, for example, the light color and / or the amount of light to be applied to the first luminaire 10 with reference to the information table.

The signal generation unit 31 is composed of a CPU (Central Processing Unit), a memory such as a RAM (Random Access Memory) and a ROM (Read Only Memory), and the like. The signal generation unit 31 may be a microcomputer having a memory for storing a program and a microprocessor, or may be hardware including an analog circuit and a digital circuit.

The communication unit 32 is a communication circuit for the signal generation unit 31 to receive operation information, environment information, light color information, light amount information, and the like. For example, the communication unit 32 receives the operation information, the light color information, and the light amount information from the operation device 40. Further, for example, the communication unit 32 receives information indicating the set temperature of the air conditioning device 50 from the air conditioning device 50 as environmental information. The communication unit 32 transmits the received information to the signal generation unit 31. Further, the communication unit 32 may transmit the first dimming signal and the second dimming signal to the first luminaire 10 and the second luminaire 20, respectively. The communication performed by the communication unit 32 may be wired communication or wireless communication. The communication standard for communication performed by the communication unit 32 is not particularly limited. The communication unit 32 is composed of a wired or wireless communication interface or the like.

The clock circuit 33 counts the time and the date and time, and outputs the environmental information indicating the season or the time zone based on the counted time and the date and time.

The temperature sensor 34 is, for example, a thermometer that detects the air temperature in the indoor space where the lighting system 1 is installed. The temperature sensor 34 may be realized by a temperature measuring element, a circuit, or the like. The temperature sensor 34 outputs environmental information indicating the detected air temperature.

The light sensor 35 is, for example, a color illuminance meter that measures the amount of light and the color of the light emitted by the second luminaire 20. The optical sensor 35 may be realized by a photoelectric conversion element, a circuit, or the like. The light sensor 35 outputs light amount information indicating the amount of light and light color information indicating the correlated color temperature of the light emitted by the detected second luminaire 20.

The clock circuit 33, the temperature sensor 34, and the optical sensor 35 may not be provided in the lighting control device 30. The clock circuit 33, the temperature sensor 34, and the optical sensor 35 are provided separately from the lighting control device 30, for example, as individual devices, and various information from the clock circuit 33, the temperature sensor 34, and the optical sensor 35 is transmitted to the communication unit 32. It may be transmitted to the signal generation unit 31 via.

[motion]
Next, the operation of the lighting system 1 according to the present embodiment will be described.

First, the operation of the first lighting fixture 10 will be described.

When power is supplied to the first luminaire 10, the first light source 11, the second light source 12, and the third light source 13 emit light under the control of the light source control unit 15.

The light source control unit 15 individually adjusts the amount of current to the first light source 11, the second light source 12, and the third light source 13 based on the first dimming signal, and adjusts the amount of current to the first light source 11, the second light source 12, and the second light source 13. By changing the amount of light of each of the three light sources 13, the light emitted by the first lighting fixture 10 is dimmed and toned. The light source control unit 15 may have a light source that does not supply electric power depending on the target light color. As a result, the light including at least one of the first light, the second light, and the third light is emitted from the first luminaire 10.

FIG. 5 is an xy chromaticity diagram of the CIE 1931 color space showing an example of the toning range of the first luminaire 10 according to the present embodiment. In FIG. 5, the first light source 11 emits the first light of the light color of the chromaticity coordinate L11, the second light source 12 emits the second light of the light color of the chromaticity coordinate L12, and the third light source 13 emits the second light of the light color of the chromaticity coordinate L12. The case where the third light of the light color of L13 is emitted is shown. As shown in FIG. 5, the light emitted by the first luminaire 10 is toned in the range of the region L1 surrounded by the line connecting the three points of the chromaticity coordinates L11, L12 and L13, for example.

Further, for example, a lighting fixture such as the second lighting fixture 20 that can be toned in the range of general white light changes the light color with the chromaticity coordinates on the line of the broken line L2 shown in FIG. For example, since the second lighting fixture 20 is a working lighting fixture, the worker feels a sense of discomfort when the color is strong. Therefore, for example, the second luminaire 20 is changed between the correlated color temperature of 2700K and 7200K so as not to make the operator feel uncomfortable. However, in the case of a change in light color in such a range, it is difficult to effectively make a person feel cold.

On the other hand, the first luminaire 10 can change the light color of the emitted light up to the chromaticity coordinate L12 outside the specified range of the color temperature on the high color temperature side. Therefore, the first luminaire 10 can effectively make a person feel cold.

The reason why the light color of the chromaticity coordinates located in the region C2, such as the light color of the chromaticity coordinates L12, can effectively make a person feel cold will be further described.

FIG. 6 is a diagram showing an example of the emission spectrum of the second light emitted by the second light source 12 of the first luminaire 10. In FIG. 6, the emission spectrum LpB of the second light is shown by a solid line. As shown in FIG. 6, the second light has emission peaks near, for example, wavelengths of 440 nm and 530 nm. Further, in FIG. 6, the emission spectrum LB of the light source that emits blue light is shown by a broken line. The light of the light source that emits blue light has an emission peak only in the vicinity of a wavelength of 440 nm.

In general, it is known that human visual sensitivity is highest in the wavelength range of 560 nm and lower in the wavelength range of 500 nm or less. For example, light with a light color that makes people feel cold, such as light with chromaticity coordinates L12, can be irradiated by using a light source that emits white light and a light source that emits blue light. can. However, since the emission peak of blue light is only around 440 nm in wavelength, the amount of light tends to be insufficient when human visual sensitivity is taken into consideration. That is, the light source of blue light has low luminous efficiency. On the other hand, since the second light has an emission peak near 530 nm, it includes light in a wavelength range in which human visual sensitivity is high. Therefore, the second light source 12 has higher luminous efficiency than the light source that emits blue light. For example, the second light source 12 has four times the luminous efficiency of the light source that emits blue light.

Also, as known as Kruitov's comfort zone curve, a person feels gloomy discomfort when the amount of light is small in cold-colored light such as high-color temperature light, and in low-color temperature. For warm-colored light such as light, the smaller the amount of light, the more comfortable it feels. Therefore, the illuminance that a person feels comfortable with is higher in the case of being irradiated with cold-colored light than in the case of being irradiated with warm-colored light. For example, the illuminance that a person feels comfortable with is 10 times higher when cold-colored light is irradiated than when warm-colored light is irradiated. Therefore, in order to make a person feel a cool feeling comfortably, it is desirable that the second light source 12 that emits cold-colored light such as the second light has high luminous efficiency.

For this reason, the first luminaire 10 can be adjusted to a light color that makes it easier for a person to feel a cold sensation by using the second light source 12 having a high luminous efficiency, so that the person can feel a cool sensation more effectively. Can be done.

Next, the operation of the lighting control device 30, specifically, the operation of the signal generation unit 31 of the lighting control device 30 will be described.

In the lighting system 1, the first lighting fixture 10 is operated by the user by operating the operating device 40 in a state where power is supplied to the first lighting fixture 10, the second lighting fixture 20, the lighting control device 30, and the operating device 40. The lighting, extinguishing, dimming, toning, and the like of each of the second luminaire 20 and the second luminaire 20 are performed. The dimming and toning of each of the first lighting fixture 10 and the second lighting fixture 20 may be performed by the lighting control device 30 (signal generation unit 31) based on information from various sensors and the like. For example, the user performs dimming and toning of each of the first luminaire 10 and the second luminaire 20 with the operator 40, or the first luminaire 10 and the first luminaire 10 and the light control device 30 (signal generation unit 31) are subjected to the dimming and toning. 2 Lighting fixture 20 Switching is performed by selecting whether to perform dimming and toning for each of the lighting fixtures 20.

The signal generation unit 31 generates the first dimming signal based on the operation information based on the user's operation, the environmental information from various sensors and the like, the light color information, the light amount information, and the like, and the generated first dimming signal. A signal is transmitted to the first luminaire 10. As a result, the light emission of the first luminaire 10 is controlled, and for example, the first luminaire 10 is turned on, off, dimmed, and toned. Further, the signal generation unit 31 may generate a second dimming signal based on the operation information based on the user's operation, the environmental information from various sensors and the like, and the like. As a result, the light emission of the second luminaire 20 is controlled, and for example, the second luminaire 20 is turned on, off, dimmed, and toned.

First, operation example 1 of the signal generation unit 31 will be described. FIG. 7 is a flowchart of operation example 1 of the signal generation unit 31.

First, the signal generation unit 31 acquires the light amount information, which is the information indicating the light amount of the light emitted by the second luminaire 20, from the light sensor 35 (step S11). The signal generation unit 31 may acquire light intensity information from the actuator 40 or the second lighting fixture 20 by using the communication unit 32. For example, when the user adjusts the light amount of the second luminaire 20 with the actuator 40, the signal generation unit 31 acquires the information of the light amount setting of the second luminaire 20 by the user as the light amount information.

Next, the signal generation unit 31 causes the first luminaire 10 to irradiate the first luminaire 10 with a light amount that is positively correlated with the light amount of the light radiated by the second luminaire 20 based on the acquired light amount information. Is generated (step S12). Specifically, the signal generation unit 31 calculates the amount of light that is positively correlated with the amount of light emitted by the second luminaire 20 by using a preset correlation coefficient based on the acquired light amount information. Then, the amount of light to be applied to the first luminaire 10 is determined. The signal generation unit 31 generates a first dimming signal for irradiating the first luminaire 10 with a determined amount of light. The correlation coefficient is set according to the environment in which the lighting system 1 is installed, the degree to which a person wants to feel warm and cold, and the like.

Next, the signal generation unit 31 transmits the generated first dimming signal to the light source control unit 15 of the first luminaire 10 (step S13). The light source control unit 15 acquires the first dimming signal and adjusts the amount of light of each of the first light source 11, the second light source 12, and the third light source 13 based on the acquired first dimming signal. As a result, the light emitted by the first luminaire 10 is dimmed based on the light amount information.

In this way, the amount of light emitted by the first luminaire 10 positively correlates with the amount of light emitted by the second luminaire 20, so that the amount of light emitted by the second luminaire 20 changes. Even in this case, the amount of light emitted by the first luminaire 10 changes accordingly. Therefore, it is possible to prevent the amount of light emitted by the first luminaire 10 from becoming too large or too small with respect to the amount of light emitted by the second luminaire 20, and a person can use an appropriate amount of light. Can make you feel warm and cold.

Next, operation example 2 of the signal generation unit 31 will be described. FIG. 8 is a flowchart of operation example 2 of the signal generation unit 31.

First, the signal generation unit 31 acquires light color information from the optical sensor 35, which is information indicating the correlated color temperature of the light emitted by the second luminaire 20 (step S21). The signal generation unit 31 may acquire light intensity information from the actuator 40 or the second lighting fixture 20 by using the communication unit 32. For example, when the user adjusts the correlated color temperature of the second luminaire 20 with the operator 40, the signal generation unit 31 acquires the information of the user's setting of the correlated color temperature of the second luminaire 20 as light color information. do.

Next, the signal generation unit 31 determines whether the light color of the light to be applied to the first lighting fixture 10 is a cold color or a warm color based on the acquired light color information. do. When the correlated color temperature of the light emitted by the second luminaire 20 is 5000 K or more (Yes in step S22), the signal generation unit 31 causes the first luminaire 10 to irradiate the first luminaire 10 with cold-colored light. A dimming signal is generated (step S23). For example, the signal generation unit 31 emits only the second light source 12 as the first dimming signal for irradiating the first luminaire 10 with cold-colored light, or the amount of light of the second light source 12 is the largest. A first dimming signal is generated so that light is emitted so as to be large.

Further, when the correlated color temperature of the light emitted by the second luminaire 20 is less than 5000 K (No in step S22), the signal generation unit 31 causes the first luminaire 10 to be irradiated with warm-colored light. A first dimming signal is generated (step S24). For example, the signal generation unit 31 emits only the first light source 11 as the first dimming signal for irradiating the first luminaire 10 with warm-colored light, or the amount of light of the first light source 11 is the largest. A first dimming signal is generated so that light is emitted so as to be large.

Next, the signal generation unit 31 transmits the generated first dimming signal to the light source control unit 15 of the first luminaire 10 (step S25). The light source control unit 15 acquires the first dimming signal and adjusts the amount of light of each of the first light source 11, the second light source 12, and the third light source 13 based on the acquired first dimming signal. As a result, the light emitted by the first luminaire 10 is toned based on the light color information.

As a result, when the second luminaire 20 emits light having a light color that has a relatively high correlated color temperature and makes a person feel cold, the first luminaire 10 also has a relatively high correlation color temperature. , Irradiate cold-colored light that makes people feel cold. Further, when the second luminaire 20 irradiates a light color having a relatively low correlated color temperature among white light and makes a person feel warm, the first luminaire 10 also gives a person a feeling of warmth. Irradiate warm-colored light that gives a feeling of warmth. Therefore, in the light emitted by the first luminaire 10 and the second luminaire 20, it is the same whether the person feels a cold feeling or a warm feeling. Therefore, the lighting system 1 can make a person feel warm and cold more effectively.

It should be noted that the correlated color temperature of the light radiated by the second luminaire 20 when determining whether the light color of the light irradiating the first luminaire 10 is a warm color or a warm color. Is not limited to 5000K, and may be set to a predetermined value different from 5000K depending on the environment and the like.

Next, operation example 3 of the signal generation unit 31 will be described. FIG. 9 is a flowchart of operation example 3 of the signal generation unit 31.

First, the signal generation unit 31 clocks circuit environmental information which is information indicating at least one of the set temperature of the air conditioner 50, the air temperature (for example, the room temperature of the space where the lighting system 1 is installed), the season, and the time zone. Obtained from at least one of 33, the temperature sensor 34, and the air conditioner 50 (step S31). For example, the signal generation unit 31 acquires environmental information indicating any of the set temperature, temperature, season, and time zone of the air conditioner 50. The signal generation unit 31 may use the communication unit 32 to acquire information indicating the set temperature of the air conditioner 50 as environmental information from the air conditioner 50 installed in the indoor space. Further, the signal generation unit 31 may acquire environmental information from a wide area communication network (not shown) such as the Internet by using the communication unit 32.

Next, the signal generation unit 31 determines the light color of the light to be applied to the first luminaire 10 based on the acquired environmental information (step S32). The signal generation unit 31 determines, for example, the light color of the light to be applied to the first luminaire 10 based on the acquired environmental information by referring to the information table. Then, the signal generation unit 31 generates a first dimming signal for irradiating the first luminaire 10 with the determined light color (step S33). That is, the signal generation unit 31 generates a first dimming signal for irradiating the first luminaire 10 with light of a light color determined based on the acquired light amount information.

Next, the signal generation unit 31 transmits the generated first dimming signal to the light source control unit 15 of the first luminaire 10 (step S34). The light source control unit 15 acquires the first dimming signal and adjusts the amount of light of each of the first light source 11, the second light source 12, and the third light source 13 based on the acquired first dimming signal. As a result, the light emitted by the first luminaire 10 is toned based on the environmental information.

For example, when the environmental information is information indicating the set temperature or the air temperature of the air conditioner 50, and the set temperature or the air temperature of the air conditioner 50 is equal to or higher than a predetermined value, the signal generation unit 31 emits cold-colored light. 1 Generates a first dimming signal to illuminate the luminaire 10. For example, the signal generation unit 31 emits only the second light source 12 as the first dimming signal for irradiating the first luminaire 10 with cold-colored light, or the amount of light of the second light source 12 is the largest. A first dimming signal is generated so that light is emitted so as to be large. When the set temperature or the air temperature of the air conditioner 50 is less than a predetermined value, the signal generation unit 31 generates a first dimming signal for irradiating the first luminaire 10 with warm-colored light. For example, the signal generation unit 31 emits only the first light source 11 as the first dimming signal for irradiating the first luminaire 10 with warm-colored light, or the amount of light of the first light source 11 is the largest. A first dimming signal is generated so that light is emitted so as to be large. Further, the signal generation unit 31 may generate light having a cooler color as the set temperature or the air temperature of the air conditioner 50 becomes larger than a predetermined value. Further, the first dimming signal may be generated to irradiate the first luminaire 10 with light having a stronger warm color as the set temperature or the air temperature of the air conditioning device 50 becomes smaller than a predetermined value.

As a result, when the set temperature or the air temperature of the air conditioner 50 is high, a person can feel a cold feeling by irradiating the light of a cold color. Therefore, even when the air conditioner or the like is not used or the set temperature of the air conditioner is high, the person can feel comfortable, and the energy used by the air conditioner or the like can be reduced. Further, when the set temperature or the air temperature of the air conditioner 50 is low, a person can feel a warm feeling by irradiating the light of a warm color system. As a result, it is possible to make people feel comfortable even when the air conditioner or the like is not used or the set temperature of the air conditioner is low, so that the energy used by the air conditioner or the like can be reduced.

The predetermined value used for the determination is appropriately set according to the environment, the season, and the like. 10A and 10B are diagrams for explaining an example of the relationship between room temperature and comfort. 10A and 10B show examples of the results of evaluating how the color of the light shining on the indoor space affects the relationship between room temperature and comfort. FIGS. 10A and 10B show the results of putting a subject in an indoor space, changing the room temperature and the light color, and letting the subject evaluate the feeling of comfort at the respective room temperature and the light color. The evaluation level of comfort is shown on the vertical axis of FIGS. 10A and 10B. The case of -3 is the most unpleasant evaluation level, and the case of 3 is the most comfortable evaluation level. Further, in FIGS. 10A and 10B, the horizontal axis is the room temperature of the indoor space. Further, in FIGS. 10A and 10B, the solid line is the result when the indoor space is irradiated with the light of the warm color system, and the dotted line is the result when the light of the cold color system is irradiated to the indoor space. Is. FIG. 10A shows the result of the evaluation in the summer. FIG. 10B shows the result of the evaluation in winter.

As shown in FIG. 10A, in the evaluation in summer, the evaluation level of comfort is higher in the indoor space irradiated with warm light color below 25 degrees, and the evaluation level of cool color is higher than 25 degrees. The evaluation level of comfort is higher in the indoor space illuminated by the light. Further, as shown in FIG. 10B, in the evaluation in winter, the evaluation level of comfort is higher in the indoor space irradiated with warm light color below 24 degrees, and the evaluation level of cool colors is higher than 24 degrees. The evaluation level of comfort is higher in the indoor space illuminated with light of light color. Therefore, from the viewpoint of making a person feel more comfortable, the predetermined value used for the determination is set, for example, between 24 degrees and 25 degrees.

Further, for example, when the environmental information is information indicating a season and the season is summer, the signal generation unit 31 generates a first dimming signal for irradiating the first luminaire 10 with cold light. .. When the season is winter, the signal generation unit 31 generates a first dimming signal for irradiating the first luminaire 10 with warm-colored light. When the season is spring or autumn, the signal generation unit 31 generates a first dimming signal for irradiating the first luminaire 10 with light of a light color having a weak color. For example, the signal generation unit 31 emits only the third light source 13 as the first dimming signal for irradiating the first luminaire 10 with light of a light color having a weak color, or the amount of light of the third light source 13 is reduced. A first dimming signal is generated so that the light is emitted so as to be the largest. Even when such environmental information indicates the season, the same effect as when the environmental information indicates the set temperature or the air temperature of the air conditioner 50 can be obtained.

Further, for example, when the environmental information is information indicating a time zone and the time zone is daytime, the signal generation unit 31 transmits a first dimming signal for irradiating the first luminaire 10 with cold-colored light. Generate. When the time zone is night, the signal generation unit 31 generates a first dimming signal for irradiating the first luminaire 10 with warm-colored light. Even when such environmental information indicates a time zone, the same effect as when the environmental information indicates the set temperature or air temperature of the air conditioner 50 can be obtained.

As described above, the signal generation unit 31 generates the first dimming signal for irradiating the first luminaire 10 with the light of the light color determined based on the acquired light amount information, so that the user does not have to operate it. However, the first luminaire 10 irradiates light of a light color that makes people feel comfortable according to the environment. Therefore, the lighting system 1 can effectively make a person feel warm and cold.

The signal generation unit 31 generates a second dimming signal from step S31 in the same manner as in step S34, and transmits the generated second dimming signal to the second lighting fixture 20 using the communication unit 32. You may. As a result, the second luminaire 20 also irradiates the light of the light color determined based on the environmental information. As a result, the atmosphere of the space in which the lighting system 1 is installed can be unified.

Further, the signal generation unit 31 irradiates the first luminaire 10 based on the environmental information that combines the information indicating at least two of the set temperature, the air temperature, the season, and the time zone of the air conditioner 50 included in the environmental information. The light color of the light may be determined.

[Effects, etc.]
As described above, the first luminaire 10 is a luminaire whose amount and color of light to be irradiated can be adjusted, and includes a first light source 11, a second light source 12, and a light source control unit 15. The first light source 11 has (x, y) = (0.380, 0.330), (x, y) = (0.510, 0.360), (x) in the xy chromaticity diagram of the CIE1931 color space. , Y) = (0.470, 0.440) and (x, y) = (0.350, 0.420). It has and emits the first light of a fixed light color. The second light source 12 has (x, y) = (0.200, 0.175), (x, y) = (0.275, 0.270), (x) in the xy chromaticity diagram of the CIE 1931 color space. , Y) = (0.220, 0.360) and (x, y) = (0.155, 0.275). It has and emits a second light of a fixed light color. The light source control unit 15 acquires a first dimming signal for adjusting the amount and color of the light emitted by the first luminaire 10, and based on the first dimming signal, the first light source 11 and the second dimming signal. The amount of light of each of the light sources 12 is adjusted.

As a result, the first lighting fixture 10 has a second light source 12 that emits a second light, and the light color of the second light is a chromaticity coordinate outside the specified range of the color temperature on the high color temperature side. Therefore, in dimming the light emitted by the first lighting fixture 10, it is possible to change the chromaticity coordinates outside the specified range of the color temperature on the high color temperature side to a light color that makes a person feel cold. be. Therefore, the first luminaire 10 can effectively make a person feel warm and cold. Further, as described above, the second light source 12 has a higher luminous efficiency than the light source of the blue light when the light of the light color of the chromaticity coordinates located in the region C2 is adjusted by mixing the blue light and the white light. , High luminous efficiency. For this reason, the first lighting fixture 10 can be adjusted to a light color that makes it easier for a person to feel a cold feeling by using the second light source 12 having a high luminous efficiency, so that the person can feel a feeling of warmth and coldness more effectively. be able to.

Further, as a result, for example, a comfortable space can be realized regardless of the air conditioner or the like, so that energy consumption can be suppressed. In addition, since it is possible to realize a comfortable space by suppressing a large temperature difference between indoors and outdoors, it is possible to reduce the human body temperature regulation load.

Further, the illumination system 1 further includes a third light source 13 that emits a third light having a light color inside the white basic color name region circle C3 defined in JIS Z8110-1995. The light source control unit 15 adjusts the amount of light of each of the first light source 11, the second light source 12, and the third light source 13 based on the first dimming signal.

As a result, in the xy chromaticity diagram of the CIE1931 color space, the third light source 13 that emits the third light having the light color of the chromaticity coordinates between the first light and the second light is provided. It becomes easy to adjust the light color of the light emitted by 10.

Further, the lighting system 1 includes a first luminaire 10 and a signal generation unit 31 that generates a first dimming signal.

As a result, the lighting system 1 can irradiate the first luminaire 10 with light that can effectively make a person feel cold.

Further, for example, the lighting system 1 further includes a second luminaire 20 that irradiates white light. The first luminaire 10 irradiates light outside the range to which the second luminaire 20 irradiates light.

As a result, the lighting system 1 is effective by irradiating a person who is in the irradiation range of the second luminaire 20 with white light suitable for work or the like and irradiating the surroundings with the light of the first luminaire 10. Can make you feel warm and cold.

[Modification example]
Hereinafter, a modified example of the embodiment will be described. In the following description of the modified example of the embodiment, the differences from the embodiment will be mainly described, and the description of the common points will be omitted or simplified.

FIG. 11 is a block diagram showing a configuration of the lighting system 1a according to the present modification. As shown in FIG. 11, in the lighting system 1a, instead of the lighting control device 30 including the first lighting fixture 10 and the signal generation unit 31 in the lighting system 1 according to the embodiment, the first lighting fixture 10a and the signal generation are performed. A lighting control device 30a including a unit 31a is provided.

The first luminaire 10a includes a first light source 11a and a second light source 12a in place of the first light source 11 and the second light source 12 in the first luminaire 10 according to the embodiment. The first light source 11a and the second light source 12a differ in the light color of the light emitted from the first light source 11 and the second light source 12.

FIG. 12 is an xy chromaticity diagram of the CIE 1931 color space for explaining the light color of the light emitted by the first light source 11a and the second light source 12a of the first luminaire 10a.

As shown in FIG. 12, the first light emitted by the first light source 11a is (x, y) = (0.405, 0.262), (x, y) in the xy chromaticity diagram of the CIE 1931 color space. = (0.634, 0.319), (x, y) = (0.460, 0.510) and (x, y) = (0.330, 0.482) It has a light color of chromaticity coordinates located in the region C1a of.

Further, the second light emitted by the second light source 12a is (x, y) = (0.181, 0.032), (x, y) = (0.315, in the xy chromaticity diagram of the CIE1931 color space. 0.200), (x, y) = (0.180, 0.430) and (x, y) = (0.069, 0.283) are located in the square region C2a having four points as vertices. It has a light color of chromaticity coordinates.

Further, in the xy chromaticity diagram of the CIE 1931 color space, the straight line connecting the chromaticity coordinates of the first light and the chromaticity coordinates of the third light passes through the region C1. As a result, the first luminaire 10a can irradiate light having a light color having chromaticity coordinates located in the region C1. Further, in the xy chromaticity diagram of the CIE 1931 color space, the straight line connecting the chromaticity coordinates of the second light and the chromaticity coordinates of the third light passes through the region C2. As a result, the first luminaire 10a can irradiate light having a light color having chromaticity coordinates located in the region C2.

As in the case of the embodiment, the light colors of the first light and the second light include the types of phosphors contained in the fluorescent member of the first light source 11a and the second light source 12a, and the case where a plurality of types of phosphors are included. It is adjusted by the blending ratio of the above and the blending amount of the phosphor in the sealing member 200.

The signal generation unit 31a, for example, in the xy chromaticity diagram of the CIE1931 color space, (x, y) = (0.380, 0.330), (x, y) = (0.510, 0.360), Light with chromaticity coordinates located in a square region C1 having four points (x, y) = (0.470, 0.440) and (x, y) = (0.350, 0.420) as vertices. In the light having color or the xy chromaticity diagram of the CIE1931 color space, (x, y) = (0.200, 0.175), (x, y) = (0.275, 0.270), ( The light color of the chromaticity coordinates located in the square region C2 having the four points of x, y) = (0.220, 0.360) and (x, y) = (0.155, 0.275) as vertices. A first dimming signal is generated to irradiate the first lighting fixture 10a with the light having the above. The signal generation unit 31a, for example, adjusts the light amounts of the first light source 11a and the third light source 13 to irradiate the first luminaire 10a with light having a light color having chromaticity coordinates located in the region C1. Generates a dimming signal. Further, for example, the signal generation unit 31a adjusts the light amounts of the second light source 12a and the third light source 13 to irradiate the first luminaire 10a with light having a light color having chromaticity coordinates located in the region C2. Generates the first dimming signal.

Further, the signal generation unit 31a performs the same operation as the signal generation unit 31 according to the embodiment, such as the operation shown in each of the above operation examples.

As described above, in the lighting system 1a according to the present modification, similarly to the lighting system 1 according to the embodiment, the first lighting fixture 10a has a light color having chromaticity coordinates located in the regions C1 and C2. Irradiate light. Therefore, the lighting system 1a according to the present modification can effectively make a person feel warm and cold.

(Other embodiments)
Although the embodiments have been described above, the present invention is not limited to the above embodiments.

For example, in the above embodiment, the lighting system 1 includes, but is not limited to, the lighting control device 30 and the actuator 40. Each component of the lighting control device 30 may be provided in the first lighting fixture 10, the second lighting fixture 20, or the actuator 40. For example, the signal generation unit 31 may be provided in the first luminaire 10, the second luminaire 20, or the actuator 40. Further, for example, the signal generation unit 31 may be included in the light source control unit 15. Further, the actuator 40 may be included in the first lighting fixture 10, the second lighting fixture 20, or the lighting control device 30.

Further, the lighting system 1 may be a lighting system that does not include the second lighting fixture 20. The lighting system 1 may be, for example, one lighting unit composed of a first lighting fixture 10 and a lighting control device 30 including at least a signal generation unit 31.

Further, in the above embodiment, another processing unit may execute the processing executed by the specific processing unit. Further, the order of the plurality of processes may be changed, or the plurality of processes may be executed in parallel.

Further, in the above embodiment, each component may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU or a processor reading and executing a software program recorded on a recording medium such as a hard disk or a semiconductor memory.

In addition, each component may be realized by hardware. Each component may be a circuit (or integrated circuit). These circuits may form one circuit as a whole, or may be separate circuits from each other. Further, each of these circuits may be a general-purpose circuit or a dedicated circuit.

In addition, general or specific embodiments of the present invention may be realized in recording media such as systems, devices, methods, integrated circuits, computer programs or computer-readable CD-ROMs. Further, it may be realized by any combination of a system, an apparatus, a method, an integrated circuit, a computer program and a recording medium.

For example, the present invention may be realized as a lighting system of the above embodiment, may be realized as a program for causing a computer to execute a lighting method, or a computer readable in which such a program is recorded. It may be realized as a non-temporary recording medium.

In addition, a form obtained by applying various modifications that can be conceived by those skilled in the art to each embodiment and modification, or any combination of components and functions in each embodiment without departing from the spirit of the present invention. The form realized by the above is also included in the present invention.

1, 1a Lighting system 10, 10a First lighting fixture (lighting fixture)
11, 11a 1st light source 12, 12a 2nd light source 13 3rd light source 15 Light source control unit 20 2nd lighting equipment 31, 31a Signal generation unit 50 Air conditioner A Work area

Claims (9)

A lighting fixture that can adjust the amount and color of the light it irradiates.
In the xy chromaticity diagram of the CIE 1931 color space, (x, y) = (0.380, 0.330), (x, y) = (0.510, 0.360), (x, y) = (0) .470, 0.440) and (x, y) = (0.350, 0.420) It has a light color of chromaticity coordinates located in a square area with four points as vertices, and a fixed light color. The first light source that emits the first light of
In the xy chromaticity diagram of the CIE 1931 color space, (x, y) = (0.200, 0.175), (x, y) = (0.275, 0.270), (x, y) = (0) .220, 0.360) and (x, y) = (0.155, 0.275) It has the light color of the chromaticity coordinates located in the square area with the four points as the apex, and has a fixed light color. The second light source that emits the second light of
A light source control unit that acquires a dimming signal for adjusting the amount and color of light emitted by the luminaire and adjusts the amount of light of each of the first light source and the second light source based on the dimming signal. Lighting equipment with and. It has a light color inside the white basic color name region circle defined in JIS Z8110-1995, and is further equipped with a third light source that emits a third light of a fixed light color.
The luminaire according to claim 1, wherein the light source control unit adjusts the amount of light of each of the first light source, the second light source, and the third light source based on the dimming signal. The first luminaire, which is the luminaire according to claim 1 or 2,
It is provided with a signal generation unit that generates the dimming signal.
The light source control unit is an illumination system that acquires the dimming signal from the signal generation unit. The first lighting fixture that can adjust the amount and color of the light to irradiate,
Equipped with a signal generator
The first lighting fixture is
In the xy chromaticity diagram of the CIE1931 color space, (x, y) = (0.405, 0.262), (x, y) = (0.634, 0.319), (x, y) = (0). .460, 0.510) and (x, y) = (0.330, 0.482) It has a light color of chromaticity coordinates located in a square area with four points as vertices, and a fixed light color. The first light source that emits the first light of
In the xy chromaticity diagram of the CIE 1931 color space, (x, y) = (0.181, 0.032), (x, y) = (0.315, 0.200), (x, y) = (0) .180, 0.430) and (x, y) = (0.069, 0.283) It has a light color of chromaticity coordinates located in a square area with four points as vertices, and a fixed light color. The second light source that emits the second light of
A third light source having a light color inside the white basic color name region circle defined by JIS Z8110-1995 and emitting a third light of a fixed light color,
A dimming signal for adjusting the amount and color of the light emitted by the first luminaire is obtained from the signal generation unit, and the first light source, the second light source, and the dimming signal are obtained based on the dimming signal. It is equipped with a light source control unit that adjusts the amount of light of each of the third light sources.
The signal generator
In the xy chromaticity diagram of the CIE1931 color space, (x, y) = (0.380, 0.330), (x, y) = (0.510, 0.360), (x, y) = (0) .470, 0.440) and (x, y) = (0.350, 0.420) Light with chromaticity coordinates located in a square region with apex, or CIE1931 color In the xy chromaticity diagram of space, (x, y) = (0.200, 0.175), (x, y) = (0.275, 0.270), (x, y) = (0.220). , 0.360) and (x, y) = (0.155, 0.275). An illumination system that generates the dimming signal to be irradiated. Further equipped with a second luminaire that irradiates white light,
The lighting system according to claim 3 or 4, wherein the first luminaire irradiates light outside the range in which the second luminaire irradiates light. The lighting system according to claim 5, wherein the second lighting fixture irradiates a work area where an operator works with light. The second luminaire is a luminaire whose amount of light can be adjusted.
The signal generation unit acquires light amount information which is information indicating the amount of light emitted by the second luminaire, and based on the acquired light amount information, is positive with the amount of light emitted by the second luminaire. The lighting system according to claim 5 or 6, which generates the dimming signal for irradiating the first luminaire with light having a light amount correlated with the above. The signal generation unit acquires light color information which is information indicating the correlated color temperature of the light emitted by the second lighting equipment, and based on the acquired light color information, the white color emitted by the second lighting equipment. Correlation of light When the color temperature is 5000 K or more, the dimming signal for irradiating the first illuminator with cold light is generated, and the correlation of white light radiated by the second illuminator is generated. The lighting system according to any one of claims 5 to 7, which generates the dimming signal for irradiating the first lighting fixture with warm light color when the color temperature is less than 5000 K. The signal generation unit acquires environmental information which is information indicating at least one of a set temperature, an air temperature, a season, and a time zone of an air conditioner, and obtains light of a light color determined based on the acquired environmental information. The lighting system according to any one of claims 3 to 7, which generates the dimming signal for irradiating the first lighting fixture.

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