JP7308079B2 - LIGHTING SYSTEM, LIGHTING CONTROL DEVICE, CONTROL METHOD AND PROGRAM - Google Patents

Description

The present invention relates to lighting systems, lighting control devices, control methods, and programs.

Lighting devices that mimic the sky are known. For example, Patent Literature 1 discloses a lighting device that imitates a blue sky, a cloudy sky, a sunset, and the like. Such a lighting device can be expected to have various effects on the user in the space to be illuminated, which cannot be achieved with the conventional lighting device. For example, by simulating the blue sky, the lighting device can reproduce the natural environment, and the user can experience the feeling of openness and the effect of reducing the oppressive feeling can be expected.

JP 2018-170157 A

As described above, the lighting device that imitates the sky can be expected to give the user various effects that could not be achieved by conventional lighting devices by reproducing the natural environment. Therefore, new solutions using the lighting device can be expected. However, at present, it is difficult to say that such a solution is sufficiently provided.

SUMMARY OF THE INVENTION An object of the present invention is to provide a lighting system or the like that realizes a solution using a lighting device that imitates the sky.

In order to achieve the above object, the lighting system according to the first aspect of the present invention comprises:
Equipped with a lighting device that imitates the sky and illuminates the space, a lighting control device, and equipment,
The equipment includes an air conditioner that air-conditions the space,
The lighting control device
a color temperature determination means for determining the color temperature of the sky emulated by the lighting device;
lighting control means for controlling the lighting device based on the color temperature determined by the color temperature determination means;
and device control means for controlling the device.

A lighting system according to a second aspect of the present invention comprises:
Equipped with a lighting device that imitates the sky and illuminates the space, a lighting control device, and equipment,
The lighting control device
a color temperature determination means for determining the color temperature of the sky emulated by the lighting device;
a state detection means for detecting the state of the device;
determination means for determining whether or not to imitate the sky with the lighting device based on the state of the equipment detected by the state detection means;
lighting control means for controlling the lighting device based on the color temperature determined by the color temperature determining means when the determining means determines that the lighting device should imitate the sky.

A lighting system according to a third aspect of the present invention comprises:
A lighting device that imitates the sky to illuminate the bedroom and a lighting control device,
The lighting control device
A wake-up time acquiring means for acquiring a wake-up time at which the user sleeping in the bedroom should wake up;
a color temperature determination means for determining the color temperature of the sky emulated by the lighting device;
lighting control means for controlling the lighting device based on the color temperature determined by the color temperature determining means;
The color temperature determining means determines the color temperature so that the lighting device imitates a blue sky when the wake-up time has passed.

A lighting system according to a fourth aspect of the present invention comprises:
Equipped with a lighting device that imitates the sky and illuminates the room, and a lighting control device,
The lighting control device
Reservation status acquisition means for acquiring reservation status for use of the room;
a color temperature determination means for determining the color temperature of the sky emulated by the lighting device;
lighting control means for controlling the lighting device based on the color temperature determined by the color temperature determining means;
The color temperature determining means determines the color temperature based on the current date and time and the reservation status.

A lighting system according to a fifth aspect of the present invention comprises:
Equipped with a lighting device that imitates the sky and illuminates the space, and a lighting control device,
The lighting device
a transmitting portion that transmits external light and guides the light to the space;
and a shielding means for shielding the external light,
The lighting control device
a shielding determination means for determining whether or not the external light should be shielded by the shielding means;
a color temperature determination means for determining the color temperature of the sky emulated by the lighting device;
Shielding control means for controlling the shielding means based on the result of determination by the shielding determination means;
and lighting control means for controlling the lighting device based on the determination result by the shielding determination means and the color temperature determined by the color temperature determination means.

According to the invention, it is possible to realize a solution using a lighting device that imitates the sky.

FIG. 2 is a diagram showing an example of a configuration of a lighting device used in Embodiments 1 to 5 of the present invention; FIG. 4 is a diagram showing another example of the configuration of the lighting device used in the first to fifth embodiments of the present invention; FIG. 11 is a diagram showing an example of a configuration of a lighting device used in Embodiments 6 to 8 of the present invention; FIG. 4 is a diagram showing transmission of external light when the liquid crystal shutter is opened in the illumination device of FIG. 1 is a diagram showing the configuration of a lighting system according to Embodiment 1 of the present invention; FIG. FIG. 3 is a diagram showing an example of color temperature determined by the color temperature determining unit of the lighting control device according to Embodiment 1 of the present invention; 1 is a diagram showing an example of a hardware configuration of a lighting control device according to Embodiment 1 of the present invention; FIG. 3 is a flowchart showing an example of device control operation by the lighting control device according to Embodiment 1 of the present invention; 1 is a diagram showing the configuration of a lighting system according to Modification 1 of Embodiment 1 of the present invention; FIG. FIG. 2 shows a configuration of a lighting system according to Embodiment 2 of the present invention; 8 is a flowchart showing an example of lighting control operation by the lighting control device according to Embodiment 2 of the present invention; FIG. 3 shows a configuration of a lighting system according to Embodiment 3 of the present invention; FIG. 11 is a diagram showing an example of color temperatures determined by a color temperature determination unit of a lighting control device according to Embodiment 3 of the present invention; 10 is a flowchart showing an example of lighting control operation by the lighting control device according to Embodiment 3 of the present invention; The figure which shows the structure of the lighting system which concerns on Embodiment 4 of this invention. FIG. 10 is a diagram showing an example of color temperatures determined by a color temperature determination unit of a lighting control device according to Embodiment 4 of the present invention; FIG. 10 is a flowchart showing an example of lighting control operation by a lighting control device according to Embodiment 4 of the present invention; FIG. FIG. 5 is a diagram showing the configuration of a lighting system according to Embodiment 5 of the present invention; The figure which shows an example of the color temperature which the color temperature determination part of the lighting control apparatus which concerns on Embodiment 5 of this invention determines. 14 is a flowchart showing an example of device control operation by the lighting control device according to Embodiment 5 of the present invention; The figure which shows the structure of the lighting system which concerns on Embodiment 6 of this invention. FIG. 12 is a diagram showing an example of the determination result by the shielding determination unit and the color temperature determined by the color temperature determination unit of the lighting control device according to Embodiment 6 of the present invention; FIG. 11 is a flowchart showing an example of lighting control operation by a lighting control device according to Embodiment 6 of the present invention; FIG. The figure which shows the structure of the lighting system which concerns on Embodiment 7 of this invention. FIG. 13 is a diagram showing an example of the determination result by the shielding determination unit and the color temperature determined by the color temperature determination unit of the lighting control device according to Embodiment 7 of the present invention; The figure which shows the structure of the lighting system which concerns on Embodiment 8 of this invention. The figure which shows an example of the equipment information preserve|saved at the equipment information storage part of the lighting control apparatus which concerns on Embodiment 8 of this invention. The figure which shows an example of the demand information which the demand management server which concerns on Embodiment 8 of this invention produces. 14 is a flowchart showing an example of lighting control operation by a lighting control device according to Embodiment 8 of the present invention; A diagram comparing an illumination device using Rayleigh scattering and a normal illumination device Diagram showing an example of the basic configuration of the blue sky lighting control system Diagram showing an example of color temperature control during the day Diagram showing an example of color temperature control in the evening Diagram showing an example of daytime color temperature seen from a skylight Diagram showing an example of evening color temperature seen from a skylight Diagram showing an example of the control mode of the blue sky lighting control system A diagram showing an example of color temperature control in each control mode of the blue sky lighting control system Diagram showing an example of a bus unit with blue sky lighting using an edge control system Diagram showing an example of a bus unit with blue sky lighting by the cloud control system Diagram showing an example of the lighting mode of a bus unit with blue sky lighting Flowchart showing an example of a control sequence in a time-linked mode of a bus unit with blue sky lighting Flowchart showing an example of a control sequence in a weather-linked mode of a bus unit with blue sky lighting Diagram showing an example of a dining kitchen with blue sky lighting using an edge control system Diagram showing an example of a dining kitchen with blue sky lighting using a cloud control system A diagram showing an example of the lighting mode during cooking in a dining kitchen with blue sky lighting A diagram showing an example of the lighting mode during a meal in a dining kitchen with blue sky lighting Flowchart showing an example of a control sequence in a time-linked mode of a dining kitchen with blue sky lighting Flowchart showing an example of a control sequence in a weather-linked mode for a dining kitchen with blue sky lighting Diagram showing an example of a bedroom with blue sky lighting by an edge control system Diagram showing an example of a bedroom with blue sky lighting by the cloud control system Diagram showing an example of lighting modes for a bedroom with blue sky lighting Flowchart showing an example of a control sequence in a time-linked mode of a bedroom with blue sky lighting Flowchart showing an example of the control sequence in the weather-linked mode of the bedroom with blue sky lighting Diagram showing an example of an office with blue sky lighting by an edge control system Diagram showing an example of an office with blue sky lighting using a cloud control system Diagram showing an example of lighting modes for an office with blue sky lighting Diagram showing an example of regional interlocking control for an office with blue sky lighting Diagram showing an example of an underground store with blue sky lighting A diagram showing an example of a control pattern in an underground store with blue sky lighting Diagram showing an example of a window with blue sky lighting Diagram showing an example of a control system for windows with blue sky lighting A diagram showing an example of controlling a window with blue sky lighting in an aircraft window Diagram showing an example of demand control for windows with blue sky lighting Diagram showing an example of air conditioning load reduction by demand control of windows with blue sky lighting Diagram showing an example of IoT data in demand control of windows with blue sky lighting Diagram showing an example of demand data in demand control for windows with blue sky lighting Flowchart showing an example of a control sequence in demand suppression mode for windows with blue sky lighting A diagram showing an example of weather-linked control for a window with blue sky lighting as a skylight. Diagram showing an example of starry sky reproduction by blue sky lighting Diagram showing an example of starry sky reproduction by blue sky lighting

A lighting system according to an embodiment of the present invention will be described below with reference to the drawings. In each drawing, the same code|symbol is attached|subjected to the same or equivalent part.

Before describing the lighting system according to each embodiment, an example of a lighting device used in each embodiment will be described. The lighting device is a lighting device that imitates the sky and illuminates a space.

(Lighting device)
The illumination device 2 will be described with reference to FIG. The illumination device 2 includes a controller 21 , a communication unit 22 , a light emitter 23 , a light guide plate 24 , a reflector 25 , a second light emitter 28 and a diffusion plate 29 . The illumination device 2 illuminates a space (hereinafter referred to as illumination space). Although the details will be described later, since the scattering location of the scattered light L2 is indefinite and the bright spot of the scattered light L2 is not constant, a person who looks at the light guide plate 24 emitting the scattered light L2 feels a sense of depth like the sky. can be done. In addition, although the details will be described later, the illumination device 2 can control the color temperature of the scattered light L2. Therefore, the illumination device 2 can imitate the sky such as a blue sky and a sunset. The illumination device 2 is an example of the illumination device according to the present invention.

The illumination device 2 will be described in more detail below. 1 is the thickness direction of the light guide plate 24, and the left and right direction in FIG. 1 is the longitudinal direction of the light guide plate 24. As shown in FIG. The light guide plate 24 is, for example, a rectangular parallelepiped with a length of 1.2 meters, a width of 0.7 meters, and a height of 10 centimeters. It is also assumed that the lighting device 2 illuminates the lighting space downward in FIG.

The control unit 21 controls the light emitting unit 23 and the second light emitting unit 28 based on the signal received by the communication unit 22 . Specifically, based on the signal received by the communication unit 22, the control unit 21 controls ON/OFF of the light emission by the light emission unit 23 and the second light emission unit 28, the irradiation light L1 emitted by the light emission unit 23, and the second light emission unit 28. The brightness and color temperature of the second irradiation light LS emitted by the second light emitting unit 28 are controlled. Although the details will be described later, the color temperature of the scattered light L2 is slightly higher than that of the irradiation light L1 due to Rayleigh scattering. Therefore, for example, when the signal received by the communication unit 22 is a signal indicating that the scattered light L2 is to have a desired color temperature, the control unit 21 determines that the color temperature of the illumination light L1 is slightly lower than the desired color temperature. The light emitting part 23 is controlled so as to reach the temperature.

The communication unit 22 receives a signal containing information necessary for the control unit 21 to control the light emitting unit 23 . Specifically, the communication unit 22 receives a signal indicating an illumination ON/OFF command, a signal indicating a brightness setting command, a signal indicating a color temperature setting command, and the like. The communication unit 22 is a communication interface connected to, for example, a lighting control device that controls the lighting device 2 .

The light emitting unit 23 emits the irradiation light L1 in the longitudinal direction and irradiates the light guide plate 24 with the light. The light emitting unit 23 can adjust the brightness and color temperature of the irradiation light L1 under the control of the control unit 21 . The light emitting unit 23 includes, for example, a red LED (Light Emitting Diode), a green LED, and a blue LED, and can adjust the color temperature of the irradiation light L1 by adjusting the luminance of each color LED. However, since light in which only red light, green light, and blue light are mixed has poor color rendering properties, the light emitting unit 23 may further include a white LED having excellent color rendering properties.

The light guide plate 24 scatters the irradiation light L1 emitted from the light emitting section 23 and illuminates the illumination space with the scattered light L2. The light guide plate 24 is manufactured by, for example, diffusing fine particles having a diameter smaller than the wavelength of light inside a translucent material such as acrylic or glass. The irradiation light L1 irradiated to the light guide plate 24 manufactured in this way is scattered by Rayleigh scattering. Rayleigh scattering refers to a phenomenon in which light is scattered by fine particles having a diameter smaller than the wavelength of the light itself. Of the irradiation light L<b>1 incident on the light guide plate 24 , the transmitted light LT that has passed through the light guide plate 24 without being scattered enters the diffuser plate 29 .

Rayleigh scattering is characterized in that light with a shorter wavelength, such as blue light or violet light, is more easily scattered. Therefore, the scattered light L2 is bluer than the irradiated light L1, that is, has a higher color temperature. For example, when the illumination light L1 is white light with a color temperature of about 7000 K, the blue light contained in the white light is easily scattered and reaches the eyes of people in the illumination space. On the other hand, light with long wavelengths such as red light and green light contained in white light is difficult to scatter and does not reach the eyes of people in the illumination space. Therefore, when the illumination light L1 is white light with a color temperature of about 7000K, the light guide plate 24 looks blue to the eyes of a person in the illumination space. In other words, the color temperature of the scattered light L2 becomes higher than that of the illumination light L1 due to Rayleigh scattering. The color temperature of the scattered light L2 is, for example, about 11000K. At this time, the color temperature of the transmitted light LT that has passed through the light guide plate 24 without being scattered becomes lower than the color temperature of the irradiation light L1.

In addition, since the fine particles are diffused everywhere in the light guide plate 24, the scattering location of the scattered light L2 is indefinite, and the bright spot of the scattered light L2 is not constant. Therefore, a person who sees the light guide plate 24 emitting the scattered light L2 can feel a sense of depth like the sky. Therefore, for example, when the illumination light L1 is white light with a color temperature of about 7000 K, a person in the illumination space can see the light guide plate 24 as blue and feel a sense of depth like the sky, that is, can experience the blue sky. can. In other words, the lighting device 2 can imitate a blue sky.

Further, for example, when the irradiation light L1 is red light having a color temperature of about 1200 K, the irradiation light L1 does not contain much blue light and contains much red light. At this time, although the color temperature of the scattered light L2 is slightly higher, it is, for example, about 2500K corresponding to orange. Therefore, by setting the color temperature of the illumination light L1 to about 1200K, it is possible to simulate a sunset.

Similarly, when the illumination light L1 is yellow light with a color temperature of about 4000K, for example, the scattered light L2 is white light with a color temperature of about 6000K. Therefore, by setting the color temperature of the irradiation light L1 to about 4000K, a cloudy sky can be simulated.

The reflector 25 is provided on the upper surface of the light guide plate 24 and reflects light scattered upward in FIG. By providing the reflecting plate 25, it is possible to reflect the light scattered in the direction opposite to the direction of illumination, and to illuminate efficiently.

The second light emitting unit 28 irradiates the diffusion plate 29 with the second irradiation light LS. The second light emitting unit 28 can adjust the brightness and color temperature of the second irradiation light LS based on the control of the control unit 21, like the light emitting unit 23. The control unit 21 controls the second light emitting unit 28 so that the mixed light of the transmitted light LT and the second irradiation light LS that are mixed on the diffusion plate 29 becomes white with a color temperature of about 5000K, for example.

The diffusion plate 29 is a diffusion plate that diffuses the transmitted light LT and the second irradiation light LS, and is, for example, a frosted glass diffusion plate. The diffusion plate 29 constitutes, for example, one side of a frame portion of the lighting device 2 (the frame portion is also called a “fixture” or a “fixture portion”). The light mixed on the diffusion plate 29 becomes white under the control of the control unit 21 .

Due to the diffusion plate 29 and the second light emitting section 28, the frame portion of the lighting device 2 seems to reflect white light. Therefore, the illuminating device 2 that imitates the sky can also reproduce how the sunlight from the sky is reflected on the insertion frame. That is, the illumination device 2 can reproduce the penetration of sunlight.

Although the second light-emitting portion 28 and the diffusion plate 29 reproduce the penetration of sunlight, they do not imitate the sky. Therefore, the illumination device 2 does not necessarily require the second light emitting section 28 and the diffusion plate 29 . These will not be described in the following description unless otherwise specified.

(combination with normal lighting)
The illumination device 2 has been described above. According to the lighting device 2, the lighting space can be illuminated by simulating the sky such as a blue sky, a cloudy sky, or a sunset. However, the illumination device 2 alone shown in FIG. 1 cannot provide normal illumination that does not imitate the sky. Therefore, for example, the illumination device 2 shown in FIG. 1 may be further provided with a light emitter such as a fluorescent lamp or a white LED for normal illumination. It should be noted that it is preferable that the control section 21 turns off the light emission by the light emitting section 23 when normal lighting is performed.

Further, for example, the configuration shown in FIG. 2 may allow normal illumination by the illumination device 2 . The illumination device 2 shown in FIG. 2 does not include the reflector 25 and includes a normal illumination section 26 . Further, the control unit 21 controls not only the light emitting unit 23 but also the normal lighting unit 26 . The communication unit 22 also receives signals containing information necessary to control the normal lighting unit 26 .

The normal lighting unit 26 includes a light emitter such as a fluorescent lamp or a white LED that provides normal lighting. Normal light L3 is emitted from the light emitter. The normal lighting unit 26 is provided above the light guide plate 24 in FIG. 2, for example. Although the light guide plate 24 and the normal illumination section 26 are separated from each other in FIG. 2, they may be in contact with each other. The normal light L3 emitted from the normal illumination unit 26 passes through the light guide plate 24 without being scattered, and illuminates the illumination space. The reason why the normal light L3 is hardly scattered is that the thickness of the light guide plate 24, that is, the length in the height direction is much shorter than the length in the longitudinal direction of the light guide plate 24. FIG.

With the configuration shown in FIG. 2 , the illumination device 2 simulates the sky by turning on the light emission of the light emitting unit 23 and turning off the light emission of the normal lighting unit 26 , while turning off the light emission of the light emitting unit 23 for normal lighting. Normal illumination is also possible by turning on the light emission by the part 26 .

The illumination device 2 used in Embodiments 1 to 5 below can also perform normal illumination, but the configuration of the illumination device 2 is not limited to that shown in FIG. Also, even an illumination device 2 that cannot emit normal light can be used in each embodiment except that it cannot emit normal light.

(use as a window)
Further, as a modified example of the lighting device 2 shown in FIG. 1, a lighting device 2W shown in FIG. 3 can be considered. The illumination device 2W is used in the sixth to eighth embodiments. The illumination device 2W differs from the illumination device 2 shown in FIG. 1 in that it includes a liquid crystal shutter 27W instead of the reflector 25, that the control unit 21 also controls the liquid crystal shutter 27W, and that the communication unit 22 controls the liquid crystal shutter 27W. The difference is that it also receives a signal containing the information necessary to

The liquid crystal shutter 27W is controlled by the control unit 21 to switch whether or not to block external light. In FIG. 3, the liquid crystal shutter 27W is filled with a net shape to indicate that the liquid crystal shutter 27W is closed. In FIG. 4, which will be described later, the fact that the liquid crystal shutter 27W is not filled indicates that the liquid crystal shutter 27W is open. The liquid crystal shutter 27W is an example of shielding means according to the present invention. A mechanical shutter can also be used as the shielding means instead of the liquid crystal shutter.

For example, as shown in FIG. 4, the external light L4 is transmitted through the light guide plate 24 when the liquid crystal shutter 27W is open. The external light L4 is light that enters from the outside of the illumination device 2W. As in the case shown in FIG. 2, since the length of the light guide plate 24 in the height direction is much shorter than the length in the longitudinal direction, the outside light L4 is hardly scattered. Therefore, the illumination device 2W can be used as a window by opening the liquid crystal shutter 27W and turning off the light emission of the light emitting unit 23, and by closing the liquid crystal shutter 27W and turning on the light emission of the light emitting unit 23 to imitate the sky. It can be used as lighting to In this case, it can be said that the light guide plate 24 transmits the external light L4 and guides the light to the illumination space. The light guide plate 24 is an example of a transmission section according to the present invention.

For example, consider a case where the lighting device 2W is fitted into an opening provided in a house. In this case, when the liquid crystal shutter 27W is opened to turn off the light emission of the light emitting unit 23, the person in the house can see the scenery outside through the light guide plate 24. FIG. When the liquid crystal shutter 27W is closed and the light emission by the light emitting unit 23 is turned on, the person in the house can see the light guide plate 24 imitating the sky.

The illumination device 2 and the illumination device 2W have been described above. In summary, according to the lighting device 2 and the lighting device 2W, the lighting space can be illuminated by simulating the sky. Moreover, according to the lighting device 2W, it can also be used as a window. Each embodiment will be described below. In each embodiment, the communication unit 22 of the illumination device 2 and the illumination device 2W is connected to the illumination control device 3 described later, and the illumination device 2 and the illumination device 2W are controlled by the illumination control device 3.

(Details of lighting equipment)
FIG. 30 is a diagram showing a more specific comparison between this blue sky illumination and a normal light guide plate illumination. 905 is a light guide plate for blue sky illumination containing Rayleigh scattering particles. The blue sky lighting is lighting that imitates the sky including the blue sky, and is an example of the lighting device according to the present invention. Here, in the case of normal illumination, light that has been repeatedly reflected within the light guide plate is guided into the room via the diffuser plate. Since it is rougher, a person who sees the illumination recognizes the luminous point of the light emission, and a viewing angle for this luminous point is generated, so the person who sees the illumination feels the light emission distance. In addition, due to the optical characteristics of the light guide plate and the diffusion plate, the light emission intensity distribution is not uniform in the light emission direction. Therefore, the person who sees the illumination similarly feels the light emission distance due to the intensity change caused by moving the position of the viewpoint.

On the other hand, in the case of blue sky lighting, small diffuse particles that cannot be seen emit light, and even if you change the viewpoint, you cannot feel the intensity change in the main light emission. The sense of distance from the light-emitting portion cannot be felt, that is, it is possible to give an extremely excellent sense of depth. Therefore, when using this blue sky lighting in an actual house or building, it is important to control how to simulate the outdoor atmosphere that exists in the natural world and lighting materials that take in natural light like actual windows. It is a practical point. In addition to the light environment, it is expected to bring the feeling of being in nature closer to the feeling of being in nature by combining it with the air environment, etc., and it is expected to have the effect of keeping the rhythm of life normal. In order to reproduce these natural environments, a control method using blue sky lighting equipment is described.

In addition, blue light is known to have the effect of resetting the body clock of humans, and it is also known that pale warm light has a relaxing effect. It is believed that this comes from the biological habit of waking up with light in the days when there was no electric light. The control system configuration and control method for realizing a specific spatial production solution will be explained as a means for more effectively providing resetting and awakening of these body clocks, relaxation effects, and the like.

FIG. 32 shows in more detail the case of emitting blue sky light in the configuration of the blue sky lighting equipment. A constructed fixture, 921, is a diagram showing the color temperature. Further, FIG. 33 shows in detail the configuration of the blue sky lighting fixture when the sunset light is emitted. Also, FIG. 34 is a diagram showing how a skylight in an actual house looks like in a luminous state, and FIG. 35 shows how the same skylight looks like in a sunset time zone.

As shown in FIG. 34, in an actual skylight, a blue sky 925 (922) can be seen through the window glass, while the window frame is illuminated by the light 926 of the sun 923 coming in from an angle that is not directly visible through the window, making it different from the blue sky. , and this situation is a common sight. In the case of a sunset, the situation is as shown in FIG. 35, and the scenery 930 directly looking at the sunset sky 928 through the windowpane and the light 931 of the sun 929 at sunset shining into the window frame have different color temperatures.

As shown in FIG. 32, in the blue sky lighting fixture, a portion 919 of the lighting fixture corresponding to the window frame emits light separately from the Rayleigh scattered light from the blue sky light guide plate. It can be reproduced faithfully. The LED light from A passes through the light guide plate 905 to generate Rayleigh scattered light, which illuminates as B, but the remaining light that is not scattered shifts in the red direction and causes peripheral equipment to emit light as C. Also, by adjusting the color temperature of the B LED light, the C+D light is emitted from the peripheral equipment. Here, just like skylights in ordinary homes, B light is emitted in the blue sky by Rayleigh scattering, and light adjusted to the color temperature of sunlight is emitted in the surrounding window frame by C + D. It is possible to reproduce the same light emission as the actual skylight. Here, in order to more realistically reproduce the situation where the sun shines from a certain angle on the equipment side, it is desirable to create a shadow with a light shielding plate or the like.

With such a configuration, the glass part of the skylight reproduces the blue sky with a sense of depth due to Rayleigh scattering, and the sunlight entering the window frame can be faithfully reproduced. Even in the case of a sunset, the Rayleigh scattering part is the sunset sky, and the fixture part corresponding to the window frame has a color temperature that reproduces the sunlight at sunset.

Here, the relationship between each color temperature is the same between the actual natural light and the blue sky lighting as follows, and the blue sky in the Rayleigh scattering part is set to be bluer than the sunlight, and the sunset is set to be reddish. .
Relationship of color temperature of each light in case of normal blue sky (Fig. 32):
Rayleigh scattering light guide plate LED input part (a) = blue sky light emission (b) + light leaking from the side of the light guide plate (c)
Natural sunlight (e) = {(c) + fixture side LED light (d)} < blue sky light emission (b)
Relationship of color temperature of each light in case of sunset sky (Fig. 33):
Rayleigh scattering light guide plate LED input part (g) = sunset glow (h) + light leaking from the side of the light guide plate (l)
Natural evening sunlight (he) = {(li) + fixture side LED light (he)} <sunset glow (h)
, the illumination control unit 912 controls the color temperature of each of the LEDs 901 and 902 so as to maintain the above color temperature relationship.

For example, when adjusting the brightness of the blue sky part and the fixture part in relation to the indoor lighting brightness and spatial presentation, the ratio of the lighting brightness of the blue sky part and the fixture part is changed (for example, the fixture part is darkened and the blue sky part is strengthened, Or vice versa), in order not to change the appearance of the actual skylight, the LED emission color temperature of A and B in FIG. 32 is controlled so as to maintain the above color temperature relational expression. Specifically, in the CPU configured by a microcomputer or the like of the lighting control unit 912 in the fixture, the above calculation formula may be implemented by SW, or the color temperature and brightness may be set in advance for each illuminance or scene. A setting table may be implemented to select a combination of settings listed in the table.

Also, in order to reduce the overall cost, a configuration in which B of the LED in FIG. 32 is omitted is also conceivable. In this case, since the lighting on the fixture side uses only the light emitted from the side surface of the light guide plate 905, the LED B is not necessary. In addition, it is necessary to adjust the density of the particles for Rayleigh scattering in advance. In this case, since there is no LED B,
Daytime (Fig. 32): Natural sunlight (e) = (c) < blue sky light emission (b)
Sunset (Fig. 33): Natural evening sunlight (he) = (li) < sunset glow (h)
The density of the Rayleigh scattering particles is set in advance so that

On the other hand, in some cases, the optical structure for reflecting light from the side surface of the light guide plate to the device is removed in order to reduce the structural cost of the device. In this case, the light of (c) and (ri) is thrown away in the fixture,
Daytime (Fig. 32): Natural sunlight (e) = LED light on fixture side (d) < blue sky light emission (b)
Evening (Fig. 33): Natural evening sunlight (H) = LED light from fixture side (N) < Sunset glow (H)
The color temperatures of LEDs A and B are set independently so that

Such control of color temperature and emission intensity is performed by the power supply unit 911 and the control unit 912 shown in FIG. Longitude) information makes it possible to reproduce environmental conditions in the natural world.

FIG. 31 shows this control system in more detail. In the figure, 913 is a remote controller, 914 is a home controller, 915 is a communication interface, 916 is a general control unit, 917 is a cloud information storage unit, and 918 is a cloud interface unit. be. Also, 908 is a device management cloud for directly controlling blue sky lighting fixtures, 906 is a weather information server, 907 is an NTP server that distributes time information, and 909 is a smart device such as a smartphone or an AI speaker.

As mentioned above, Blue Sky Lighting can reproduce more realistic window conditions by reproducing the natural windows and window frames while adjusting the color temperature and intensity of the light emitters that include multiple light sources. , the adjustment function by the control system is essential. Generally, a lighting fixture has a built-in power source 911 and a control circuit 912 , and a user inputs ON/OFF, setting changes, and the like via a remote controller 913 . Here, the control circuit 912 controls the light emission intensity and color temperature of LED A and LED B so as to satisfy the above-described color temperature relationship.

On the other hand, an in-home controller 914 is connected to the lighting equipment via a communication interface circuit 915, and a general control unit 916 controls the overall mode such as when to set blue sky, sunset, or normal light emission. It controls the entire plurality of blue sky lighting fixtures connected to the in-home controller 914 . In addition, there is a weather information cloud 906 and an NTP server 907 that distributes time information on the cloud, and the device management cloud 908 aggregates these information, distributes the information to the home controller 914, stores it in the cloud information storage unit 917, and controls it. It will be used as a condition.

A smart device 909 is connected to the device management cloud 908 and used to change settings and perform ON/OFF operations from outside the home.

In addition, FIG. 31 describes the case where the in-home controller 914 performs overall control of a plurality of lighting fixtures, but it is also possible to have this controller function in the device management cloud 908 and directly control the lighting fixtures, which will be described later. described as an example of

As mentioned above, the general usage of this blue sky lighting is to reproduce the natural environment indoors or create a simulated natural environment. Control is performed to change the light emission mode of the lighting equipment depending on the time and weather conditions at the installation location. Here, there is a method in which the time of sunrise and sunset is determined according to the installation location (latitude and longitude) and the time, and according to this, interlocking with the natural world such as blue sky, sunset, and starry sky is called a time interlocking mode. There is also a method of adjusting to this based on the weather information of the installation location, which is hereinafter referred to as a weather-linked mode. It is also possible to match both of these time linkage and weather linkage, and it is also possible to faithfully match the outdoor light environment. Also, if only the time is interlocked, it is possible to always have a blue sky during the daytime regardless of the outside weather.

As control modes of in-home controller 914, there are modes as shown in FIG.
1. Time linked mode:
The light emission mode of the blue sky lighting is changed according to the sunrise and sunset times of the lighting installation area (latitude and longitude) based on the zip code or address and date and time information.
2. Weather linked mode:
Based on the weather information of the day, the light emission mode of the blue sky lighting is changed according to the sunny/cloudy/rainy conditions.
3. Device interlocking mode:
Based on operation information of bath equipment, kitchen appliances, air conditioning/heating equipment, ventilation equipment, etc., the light emission mode is changed in conjunction with the status of equipment other than lighting.
4. System interlocking mode:
The lighting mode is changed according to the state of an entrance/exit management system, an elevator management system, an absence/absence management system, or the like.
5. Combination of 1 to 4 above

In addition, the above 1.2.4. The control shown in FIG. 37 is performed as a specific control content of .
1. Time linked mode:
The light emission mode of the blue sky lighting is changed according to the sunrise and sunset times of the lighting installation area (latitude and longitude), and during the daytime, the light guide plate is blue and the fixture is white, so that the fixture white is maintained even if the brightness changes. Also, at sunset and sunrise, the light guide plate is reddish, and the fixture is reddish to white. In addition, the light guide plate reproduces the color temperature of the sky, and the fixture reproduces the white reflected light including sunlight,
・Sunny day: The light guide plate is blue (this color temperature is A), and the fixture reproduces the sunlight reflection (white) in the daytime (this color temperature is B).
・Evening: The light guide plate gradually shifts to the reddish direction (this color temperature is C), and the fixture is reddish toward white as the reflected light from the setting sun (this color temperature is D).
- Color temperature relationship: Control the light source to maintain red<C<D<B<A<blue.
2. Weather linked mode:
Based on the weather information of the day, the light emission mode of the blue sky lighting is changed according to whether it is sunny, cloudy, or rainy. and
3. System interlocking mode:
The light emission mode is changed according to the state of the entrance/exit management system, the elevator management system, and the presence/absence management system.

In addition, the starry sky may be reproduced in the light emission mode, and the structure in this case is as shown in FIGS. 69 and 70. FIG. Here, in the case of FIG. 69, another light guide plate 1085 is provided on the back surface for making stars shine in the starry sky. By passing light through a pattern or a bubble-like portion with a refractive index different from that of the light guide plate resin, it is possible to obtain fine glittering light like a starry sky. By passing this light through the Rayleigh scattering light guide plate 905 in the vertical direction where the transmission distance is short, it is possible to emit light and visually recognize it without being affected by Rayleigh scattering during transmission. In this case, the blue sky light emission using the Rayleigh scattering light guide plate may be turned off, and conversely, it is possible to cover the dim sky or the darkened sunset sky with the illumination reduced by the Rayleigh scattering light guide plate.

Also, as in the modified example shown in FIG. 69, the starry sky light guide plate is configured in a disc shape and rotated to match the movements of the stars in the sky. Further, it may be configured such that the flat starry sky light guide plate is slid.

Alternatively, as shown in FIG. 70, a liquid crystal display panel 1088, a liquid crystal display light guide plate 1087, a liquid crystal display driver 1089, and an image processing section 1090 may be used to draw the starry sky directly on the liquid crystal surface. In this case, depending on the display content, such as the display of the moon, it is possible to express freely, such as moving the position of the stars over time, or simulating what the actual stars and moon can be seen from the direction of the window.

In addition, since the light guide plate itself is transparent when not emitting light, the blue sky illumination can be used as a window. This window with blue sky lighting function has a configuration as shown in FIG. Here, the blue sky light emitting LED, the fixture 919 side light emitting LED 901, and the Rayleigh scattering light guide plate 905 have the same configuration as the blue sky lighting fixture described above, but have a liquid crystal shutter on the back, and the liquid crystal shutter is in a closed state. For example, it functions as blue sky lighting, and when the liquid crystal shutter is opened and the lighting function is turned off, it functions as a window. Note that the same effect can be obtained by using an actual mechanical shutter instead of the liquid crystal shutter.

(Embodiment 1)
The illumination system 1 according to Embodiment 1 will be described with reference to FIG. A lighting system 1 according to Embodiment 1 is a lighting system that illuminates a bathroom with a lighting device 2 provided in the bathroom and also controls other devices provided in the bathroom. The lighting system 1 includes a lighting device 2 , a bathroom air conditioner 11 , a water heater 12 , a lighting control device 3 and a weather server 4 . The lighting control device 3 is connected to the lighting device 2, the bathroom air conditioner 11, and the water heater 12 so as to be able to communicate with each other. The lighting control device 3 communicates with the weather server 4 via the Internet NT. A lighting system 1 is an example of a lighting system according to the present invention.

The lighting device 2 is installed, for example, on the ceiling of the bathroom, and illuminates the bathroom while simulating the sky under the control of the lighting control device 3 . The lighting device 2 allows a bather to experience the sky while taking a bath.

The bathroom air conditioner 11 is installed, for example, on the ceiling of the bathroom and air-conditions the bathroom based on the control of the lighting control device 3 . In particular, the bathroom air conditioner 11 blows air into the bathroom. The term "air-conditioning" as used herein is not limited to air-conditioning, and may include, for example, air-blowing for ventilation, drying of clothes, and the like. Therefore, the bathroom air conditioner 11 can include not only the air conditioner but also the bathroom dryer, the ventilation fan, and the like. The bathroom air conditioner 11 is an example of a device, an air conditioner, and a bathroom air conditioner according to the present invention.

A bather can experience the sky and the wind by blowing air into the bathroom with the bathroom air conditioner 11 while simulating the sky with the lighting device 2. - 特許庁Also, due to the wind, there is a certain degree of temperature difference between the temperature of the surface of the hot water that is in contact with the air and the temperature inside, as in an actual open-air bath. Therefore, the bather can experience as if he or she is in an open-air bath. On the other hand, when there is no air blowing from the bathroom air conditioner 11, the bather can feel the sky, but since there is no wind, he/she feels as if he or she is looking at the sky from inside the room. experience is not possible. Moreover, even if there is no imitation of the sky by the illumination device 2, the experience of being in an open-air bath cannot be experienced. The lighting device 2 and the bathroom air conditioner 11 allow the bather to have the experience of being in an open-air bath for the first time.

The water heater 12 supplies hot water to the bathtub of the bathroom. The water heater 12 is a water heater capable of supplying foamed hot water like a carbonated bath to a bathtub by a function of generating microbubbles. The water heater 12 is, for example, a heat pump type water heater. The water heater 12 is an example of a device and a water heater according to the present invention. By supplying the hot water foamed by the water heater 12 to the bathtub, the bather can have the experience of being in an open-air carbonated bath.

The lighting control device 3 controls the lighting device 2 , the bathroom air conditioner 11 and the water heater 12 . Although the details will be described later, the lighting control device 3 can, for example, acquire weather information from the weather server 4 and control the lighting device 2 so as to imitate a weather-linked sky pattern. The lighting control device 3 can also control the lighting device 2 so as to imitate, for example, a sky pattern linked to the current date and time. The lighting control device 3 is installed, for example, in a house where the lighting device 2 is installed. The lighting control device 3 is an example of a lighting control device according to the present invention.

The lighting control device 3 includes a control section 30 , an external communication section 31 , a device communication section 32 and an operation section 33 .

The control unit 30 centrally controls the lighting control device 3 . The control unit 30 includes each functional unit shown in FIG. 5, and the details of each functional unit will be described later.

External communication unit 31 communicates with weather server 4 via Internet NT. The external communication unit 31 is, for example, a network interface connected to a broadband router (not shown) provided at home.

The device communication unit 32 communicates with the lighting device 2 , the bathroom air conditioner 11 and the water heater 12 . The device communication unit 32 is an interface for device communication connected to the lighting device 2, the bathroom air conditioner 11, and the water heater 12, for example.

The operation unit 33 receives an operation from the user and outputs a signal corresponding to the operation to the control unit 30 . The signal corresponding to the operation is, for example, a signal indicating an instruction such as turning on/off the lighting, turning on/off the air conditioning in the bathroom, starting/stopping the hot water supply, and switching the linked mode described later. The user here is basically a bather. However, the operation unit 33 may be operated by a person other than the bather. The operation unit 33 is, for example, a wall-mounted remote controller provided at the entrance of the bathroom.

The interlocking mode is a mode indicating whether or not to interlock the sky pattern imitated by the lighting device 2 with the current date and time and the weather. Hereinafter, the mode linked with the current date and time will be referred to as the time linked mode, and the mode linked with the weather will be referred to as the weather linked mode. Both of these modes can be turned on or both can be turned off. For example, when only the time-linked mode is on and the current date and time is around 12:00 in April, the illumination control device 3 controls the illumination device 2 to imitate a blue sky. Similarly, for example, when only the weather-linked mode is on and the weather is cloudy, the lighting device 2 imitates a cloudy sky under the control of the lighting control device 3 . Further, for example, when both the time-linked mode and the weather-linked mode are on, the current date and time is around 16:00 in December, and the weather is fine, the lighting device 2 imitates a sunset under the control of the lighting control device 3. do.

The weather server 4 transmits weather information to the lighting control device 3 . The weather server 4 is a server operated by, for example, the Japan Meteorological Agency and providing weather information throughout the country. The weather server 4 identifies the region where the lighting control device 3 is installed based on, for example, an IP (Internet Protocol) address assigned to the lighting control device 3, and sends weather information indicating the weather in that region to the lighting control device 3. Send. Regarding the method of specifying the area where the lighting control device 3 is installed, in addition to the IP address, for example, the lighting control device 3 may be provided with a GPS (Global Positioning System) receiver. Alternatively, the trader may set and register the area where the lighting control device 3 is installed when the lighting control device 3 is installed.

Next, each functional unit of the control unit 30 of the lighting control device 3 will be described. Control unit 30 includes weather information acquisition unit 301 , date/time acquisition unit 302 , color temperature determination unit 303 , lighting control unit 304 , air conditioning control unit 305 , and hot water supply control unit 306 .

The weather information acquisition unit 301 acquires weather information from the weather server 4 via the external communication unit 31 . For example, the weather information acquisition unit 301 may acquire weather information indicating only the weather at the current date and time, or may acquire weather information indicating the weather for one day including the current date and time.

The date and time acquisition unit 302 acquires the current date and time. For example, the date and time acquisition unit 302 may acquire the current date and time from a real-time clock (not shown) provided in the lighting control device 3, or acquire the current date and time from a time server (not shown) on the Internet NT via the external communication unit 31. You can get the date and time.

The color temperature determination unit 303 determines the color temperature of the sky simulated by the lighting device 2, that is, the color temperature of the scattered light L2. For example, when the color temperature determination unit 303 determines the color temperature to be 2500K, the color temperature of the sky simulated by the lighting device 2 is 2500K, and the lighting device 2 simulates a sunset. However, if the illumination device 2 is capable of illuminating with normal light, the color temperature determining unit 303 can also determine that the illumination device 2 should illuminate with normal light without simulating the sky. The color temperature determination unit 303 is an example of color temperature determination means according to the present invention.

The color temperature determination unit 303 determines the color temperature according to the pattern shown in FIG. The descriptions of “(blue sky)”, “(cloudy sky)” and “(sunset)” shown in FIG.

Each row shown in FIG. 6 indicates how the color temperature should be determined for each current date and time. However, the lines "daytime", "evening", and "nighttime" are applied only when the time-linked mode is on, and only the line "time-linked off" is applied when the time-linked mode is off. In addition, the description of "(normal light, daytime reproduction, etc.)" shown in the "nighttime" line may be illuminated with normal light without simulating the sky, or with "daytime". Indicates that similar color temperatures may be determined. If the illumination device 2 cannot illuminate with normal light, daytime reproduction may be performed.

Each column shown in FIG. 6 indicates how the color temperature should be determined for each weather. However, the columns of "sunny" and "cloudy/rainy" are applied only when the weather-linked mode is on, and only the column of "weather-linked off" is applied when the weather-linked mode is off. Therefore, in the case of the pattern shown in FIG. 6, the color temperature is always determined as 11000K when both the time linked mode and the weather linked mode are off.

The pattern shown in FIG. 6 is merely an example, and the color temperature determination unit 303 does not necessarily have to determine the color temperature based on the pattern shown in FIG. For example, the color temperature may be determined as 2500K in the evening even if the weather is cloudy, or the color temperature may be determined as 2500K when both the time-linked mode and the weather-linked mode are off.

Also, in the time-linked mode, control may be performed in consideration of not only the current date and time but also the installation position of the lighting device 2 . For example, when the lighting device 2 is installed, information indicating the latitude and longitude of the installation position of the lighting device 2 is registered in the lighting control device 3, the sunrise time and sunset time of each day at the installation position are calculated, and the sunrise time and sunset time are calculated. The color temperature may be determined according to time.

The lighting control unit 304 controls the lighting device 2 via the device communication unit 32 based on the color temperature determined by the color temperature determining unit 303 and the signal output from the operation unit 33 . For example, when the color temperature determining unit 303 determines the color temperature to be 11000K, the lighting control unit 304 controls the lighting device 2 so that the scattered light L2 generated from the lighting device 2 has a color temperature of 11000K. Further, for example, when the user operates the operation unit 33 to increase the brightness, the lighting control unit 304 performs control to increase the brightness of the lighting of the lighting device 2 . Note that when the color temperature determining unit 303 determines that normal light illumination should be performed, the lighting control unit 304 controls the lighting device 2 so that the lighting device 2 performs normal light illumination. The illumination control unit 304 is an example of illumination control means according to the present invention.

The air conditioning control unit 305 controls the bathroom air conditioner 11 via the device communication unit 32 to blow air into the bathroom. For example, the air conditioning control unit 305 controls the bathroom air conditioner 11 so as to start air blowing in conjunction with lighting control in which the lighting control unit 304 turns on the lighting device 2 . The air conditioning control unit 305 is an example of device control means according to the present invention.

The hot water supply control unit 306 controls the water heater 12 via the device communication unit 32 to supply foamed hot water to the bathtub. For example, the hot water supply control unit 306 controls the water heater 12 so as to start supplying bubbly hot water in conjunction with lighting control in which the lighting control unit 304 turns on the lighting device 2 . The hot water supply for filling the bathtub with hot water may be performed regardless of whether the lighting device 2 is turned on or off. Hot water supply control unit 306 is an example of device control means according to the present invention.

The configuration of the illumination system 1 has been described above. Next, an example of the hardware configuration of the lighting control device 3 will be described with reference to FIG. The lighting control device 3 shown in FIG. 7 is implemented by a computer such as a personal computer or a microcontroller.

The lighting control device 3 includes a processor 1001 , a memory 1002 , an interface 1003 and a secondary storage device 1004 which are connected to each other via a bus 1000 .

The processor 1001 is, for example, a CPU (Central Processing Unit). Each function of the lighting control device 3 is realized by the processor 1001 reading the operation program stored in the secondary storage device 1004 into the memory 1002 and executing it.

The memory 1002 is, for example, a main memory configured by a RAM (Random Access Memory). The memory 1002 stores an operating program read by the processor 1001 from the secondary storage device 1004 . The memory 1002 also functions as a work memory when the processor 1001 executes the operating program.

The interface 1003 is an I/O (Input/Output) interface such as a serial port or network interface. The interface 1003 implements the functions of the external communication section 31 and the device communication section 32 .

The secondary storage device 1004 is, for example, a flash memory, HDD (Hard Disk Drive), SSD (Solid State Drive). The secondary storage device 1004 stores operation programs executed by the processor 1001 .

Note that lighting control devices 3 according to other embodiments and modifications to be described later can also have the same hardware configuration as the configuration shown in FIG. 7 .

Next, an example of device control operation by the lighting control device 3 will be described with reference to FIG. 8 . The operation shown in FIG. 8 is started, for example, when the user operates the operation unit 33 to turn on the illumination. If the current season is winter, the temperature obtained from the weather information is low, or the room temperature in the bathroom is expected to be low, heating by the bathroom air conditioner 11 may be performed in advance. “Preliminary” means before the user takes a bath, for example, the timing at which the water heater 12 fills the bath with hot water.

The color temperature determination unit 303 of the control unit 30 of the lighting control device 3 determines the color temperature depending on whether the time-linked mode and the weather-linked mode are ON/OFF (step S101). For example, as described above, the color temperature determining unit 303 determines the color temperature according to the pattern shown in FIG. The color temperature is determined based on the weather information acquired by the weather information acquisition unit 301 when the linked mode is on.

The lighting control unit 304 of the control unit 30 controls the lighting device 2 based on the color temperature determined in step S101 (step S102). The air conditioning control unit 305 of the control unit 30 controls the bathroom air conditioner 11 to blow air into the bathroom (step S103). The hot water supply control unit 306 of the control unit 30 controls the water heater 12 so as to supply the bubbled hot water to the bathtub (step S104).

The control unit 30 checks a signal from the operation unit 33 and determines whether or not the user has performed an operation to turn off the illumination (step S105). When the operation to turn off the illumination has not been performed (step S105: No), the control unit 30 repeats the operation flow from step S101.

When the operation to turn off the lighting is performed (step S105: Yes), the lighting control unit 304 controls to turn off the lighting device 2, the air conditioning control unit 305 controls to stop the ventilation by the bathroom air conditioner 11, The hot water supply control unit 306 performs control to stop the hot water supply by the water heater 12 (step S106). Then, the control unit 30 ends the device control operation.

The illumination system 1 according to Embodiment 1 has been described above. According to the lighting system 1, while simulating the sky with the lighting device 2, the bathroom air conditioner 11 blows air into the bathroom, so that the bather can feel the sky and the wind as if he were in an open-air bath. You can experience it. Furthermore, by supplying bubbly hot water with the hot water heater 12, the bather can have the experience of being in an open-air carbonated bath. Therefore, the lighting system 1 according to the first embodiment can realize a solution using the lighting device 2 that imitates the sky.

(Modification 1 of Embodiment 1)
In Embodiment 1, the lighting control device 3 is installed, for example, in a house, and is connected to the lighting device 2, the bathroom air conditioner 11, and the water heater 12. FIG. However, the lighting control device 3 may be composed of, for example, a cloud server on the Internet NT, and indirectly control the lighting device 2, the bathroom air conditioner 11, and the water heater 12 via the Internet NT.

For example, as shown in FIG. 9, the lighting control device 3 does not include the equipment communication unit 32 and the operation unit 33, and the lighting device 2 and the bathroom air conditioner 11 are controlled via the external communication unit 31 and the controller 5 provided in the house. and the water heater 12 may be controlled. The controller 5 is, for example, a HEMS (Home Energy Management System) controller connected to the Internet NT. Devices connected to the controller 5 are controlled from the lighting control device 3 on the Internet NT via the controller 5 . A user can operate the lighting control device 3 by accessing the lighting control device 3 via the Internet NT, for example, using a mobile terminal (not shown).

It should be noted that lighting control devices 3 according to other embodiments and modifications to be described later can also be similarly configured by a cloud server.

(Modification 2 of Embodiment 1)
In the lighting system 1 according to Embodiment 1, the water heater 12 supplies bubbly hot water. However, in the lighting system 1, the water heater 12 and the hot water supply controller 306 of the lighting control device 3 are not essential. This is because the imitation of the sky by the lighting device 2 and the blowing of air by the bathroom air conditioner 11 alone allow the bather to feel as if he or she is in an open-air bath.

(Modification 3 of Embodiment 1)
In the lighting system 1 according to Embodiment 1, it is possible to imitate the sky in conjunction with the current date and time and the weather. For example, the lighting control device 3 may not include the external communication unit 31, the weather information acquisition unit 301, and the date/time acquisition unit 302, and the color temperature determination unit 303 may always determine the color temperature as 11000K.

Further, each modification described above can also be applied to each embodiment described later as appropriate.

(Details of Embodiment 1)
FIG. 38 shows an example of a bus unit in more detail. Blue sky lighting 944 is controlled by a power supply unit 939 and a control unit 938 to control light emission of fixtures. The entire bus unit is controlled by the general control section 933 , the cloud information storage section 934 and the cloud interface section 935 . Here, in addition to the lighting, a bath hot water supply function consisting of a hot water heater 941, a hot water heater driving section 946, a hot water heater control section 947, and a microbubble generating section 945, and a bath replacement unit and bath replacement unit that manages the air conditioning of the bathroom. Two devices of the drive circuit are connected to the unit bus controller.

FIG. 39 shows a configuration in which the control system shown in FIG. 38 is provided on the cloud side. Here, the unit bus controller is configured on the cloud, and the water heater 941, bus switch 943, and blue sky lighting fixture 944 are directly connected to the device management cloud 908 via communication IFs 952, 953, and 954, respectively. there is In this case, although the remote control 942 as shown in FIG. 38 may be operated, the smart device 909 may be operated outside the home or operated in a separate room.

This blue sky lighting, for example, has Rayleigh scattered light with a high sense of depth, and for example, a skylight expression that reproduces the luminescence of the window frame. By sending outdoor air to the bath unit, the air inside the bath unit can also reproduce the feeling of being outdoors. In particular, in an actual open-air bath, the temperature of the hot water in the bath is relatively cold, and the surface that touches the air is lower than the inside. You can expect to improve the experience of the open-air bath.

FIG. 40 shows an example of lighting mode setting for a bus unit with blue sky lighting. The horizontal axis of the figure indicates the time of bathing and the weather at that time. The vertical axis indicates the operation mode of blue sky lighting, bus switching, and water heater. In this example, as a daytime reproduction mode, when bathing on a sunny day, the blue sky lighting is emitted to make it an open-air bath, but when it is cloudy or rainy, the brightness is reduced and the outside state is reproduced in gray. Also, in the evening, if it is sunny, it will be a sunset, and if it is cloudy or rainy, the brightness will be similarly reduced to gray to reproduce the outside conditions.

However, at night, it is difficult to take a bath in total darkness, so the user is asked whether to use normal lighting to eliminate the feeling of an open-air bath, or to enjoy the feeling of an open-air bath with lighting that reproduces the blue sky, albeit at a different time. let you choose.

Also, as a device for lighting control,
・When the bathing time exceeds a certain value, the blue sky changes to the sunset, prompting the user to finish bathing and preventing hot flashes.
・By turning on the microbubbles of the water heater, the feeling of an open-air bath in a carbonated bath is reproduced (this setting is selected by the user).
・When the outside temperature is low, such as in winter, turn on the heating to keep the bathroom warm while filling the water to prevent heat shock.
It also incorporates ingenuity as a control system such as.

FIG. 41 shows a more detailed control flow in time-linked mode. Here, after the step 949 of turning on the hot water supply from the remote controller, the completion of the hot water supply is notified in step 950 by the screen display of the remote controller or by voice. At this time, information such as time information and weather/temperature information in the cloud are obtained from another cloud information site and stored in the cloud information storage unit of the controller. At this time, if it is winter and the temperature is low, the bath heater is turned on to preheat the bathroom in step 953 , and the notification that the bathroom is ready is sent in step 954 . Next, through a determination 955 whether the time-linked mode is ON or not, in the case of the time-linked mode, the time and the longitude and latitude at which the bus unit is installed determine whether it is day or night, or neither day nor night (sunset). or the time of sunrise), and in accordance with this, switching (step 958, 959, or 960) is performed between blue sky light emission, sunset light emission, starry sky, and normal illumination light. When the user sets the open-air bath mode, cool air is blown into the bathtub to reproduce the feeling of an open-air bath (lowering the air temperature on the surface of the hot water and the surface temperature of the hot water).

In the case of the weather-linked mode (FIG. 42), after step 949 of turning on the hot water supply from the remote controller, notification of the completion of hot water supply is given in step 950 by the remote controller screen display or voice notification. At this time, information such as time information and weather/temperature information in the cloud are obtained from another cloud information site and stored in the cloud information storage unit of the controller. At this time, if it is winter and the temperature is low, the bath heater is turned on to preheat the bathroom in step 953 , and the notification that the bathroom is ready is sent in step 954 . Up to this point, it is the same as the time-linked mode. Next, when the user sets the weather-linked mode, whether the weather is sunny is obtained from the external cloud information in decision step 964. If not, light up the cloudy sky. The portion for blowing cold air to the bathtub in the open-air bath mode is the same as that shown in FIG.

In addition, by combining these weather linkages and time linkages, it is possible to set the outdoor conditions as they are, such as setting the sunset sky in the evening, the starry sky in the evening, and the cloudy sky in the case of cloudy or rainy weather. It is also possible to reproduce the

(Embodiment 2)
A lighting system 1 according to Embodiment 2 will be described with reference to FIG. The lighting system 1 according to Embodiment 2 combines the lighting device 2a, which is the lighting device 2 provided in the kitchen, and the lighting device 2b, which is the lighting device 2 provided in the dining room, into one or more lighting devices provided in the kitchen. It is a lighting system that controls the kitchen equipment 13 according to the usage conditions. However, in Embodiment 2, it is assumed that the lighting device 2a in the kitchen is capable of lighting with normal light. Also, the kitchen and dining room are assumed to be adjacent to each other. The configuration different from that of the first embodiment will be described below.

The lighting system 1 according to Embodiment 2 differs from Embodiment 1 in that the kitchen lighting device 2a, the dining room lighting device 2b, and the kitchen appliance 13 are connected to the device communication unit 32 of the lighting control device 3. . Further, control unit 30 does not include air conditioning control unit 305 and hot water supply control unit 306, but includes state detection unit 307 and determination unit 308, unlike in the first embodiment. Further, the operation unit 33 is different from the first embodiment in that it is a remote control provided in the kitchen, for example. Further, the illumination control unit 304 differs from the first embodiment in that it controls the illumination device 2a and the illumination device 2b. Also, the operation performed by the control unit 30 is different from that of the first embodiment, but this will be described later in the explanation of the operation.

The kitchen appliances 13 are appliances such as refrigerators, microwave ovens, cooking heaters, range hoods, etc., which are assumed to be used frequently during cooking. The kitchen appliance 13 transmits information indicating the usage state, which will be described later, to the appliance communication unit 32 of the lighting control device 3 .

The state detection unit 307 detects the usage state of the kitchen appliance 13 via the device communication unit 32 . The state of use of the kitchen equipment 13 includes, for example, whether or not the kitchen equipment 13 is powered on, whether or not the door of the refrigerator, which is the kitchen equipment 13, is open. The state detection unit 307 is an example of state detection means according to the present invention.

The determination unit 308 determines whether or not cooking is currently being done in the kitchen based on the state of use of the kitchen appliance 13 detected by the state detection unit 307 . The determination unit 308 determines whether or not cooking is being done based on, for example, the frequency of opening and closing the refrigerator door within a certain period of time, how many of the kitchen appliances 13 are powered on, and the like. judge. The determination unit 308 is an example of determination means according to the present invention.

Next, an example of lighting control operation by the lighting control device 3 will be described with reference to FIG. 11 . The operation shown in FIG. 11 is started, for example, when the user operates the operation unit 33 to turn on the illumination. Further, when the user operates the operation unit 33 to turn off the illumination, the operation shown in FIG. 11 is terminated after the control is performed to turn off the illumination devices 2 . It should be noted that description of operations similar to those of the first embodiment will be simplified.

The color temperature determination unit 303 of the control unit 30 of the lighting control device 3 determines the color temperature based on the pattern shown in FIG. 6, for example, as in the first embodiment (step S201).

The state detection unit 307 of the control unit 30 detects the usage state of each kitchen appliance 13 (step S202). The determination unit 308 of the control unit 30 determines whether or not cooking is currently being done in the kitchen based on the usage state detected in step S202 (step S203).

When it is determined that cooking is in progress (step S203: Yes), the lighting control unit 304 of the control unit 30 controls the lighting device 2a in the kitchen based on the color temperature determined in step S201 (step S204). , the operations after step S206 are executed. Due to this operation, the lighting device 2a in the kitchen imitates the sky during cooking, so that the cook can experience as if he/she is cooking outside.

When it is determined that cooking is not in progress (step S203: No), the lighting control unit 304 performs lighting control to set the kitchen lighting device 2a to normal light (step S205), and executes the operations after step S206. Due to this operation and the operation of step S206, which will be described later, the lighting device 2b in the dining room imitates the sky when cooking is not in progress, while the lighting device 2a in the kitchen illuminates with normal light. Those who dine in can experience as if they were dining in a place a little outside the room.

The lighting control unit 304 controls the lighting device 2b in the dining room based on the color temperature determined in step S201 (step S206). This action allows those in the dining room to experience as if they were outdoors. Then, the control unit 30 repeats the operation from step S201.

For the lighting device 2b in the dining room, for example, the end of cooking may be regarded as the start of eating, and the lighting by the lighting device 2b may be normal light after a certain period of time has passed since the start of eating.

The illumination system 1 according to Embodiment 2 has been described above. According to the lighting system 1 according to Embodiment 2, the person in the dining room can experience as if they were outdoors, and the cook can experience as if they are cooking outside. In addition, those who eat in the dining room after cooking can experience as if they were eating in a place slightly outside the room. Therefore, the lighting system 1 according to the second embodiment can realize a solution using the lighting device 2 that imitates the sky.

(Modification of Embodiment 2)
In Embodiment 2, the color temperature determined by the color temperature determination unit 303 is common to the lighting device 2a in the kitchen and the lighting device 2b in the dining room. However, the color temperature determining unit 303 may determine different color temperatures for the lighting device 2a in the kitchen and the lighting device 2b in the dining room. For example, the color temperature of the lighting device 2a in the kitchen may always be 11000 K during cooking, and the lighting device 2a may always imitate the blue sky.

In the second embodiment, the lighting device 2a in the kitchen illuminates with normal light when the food is not being cooked, but the lighting device 2a may mimic the sky even when the food is not being cooked. For example, if you imitate a blue sky when you are not cooking, you can expect to feel refreshed when you put away the dishes.

(Details of Embodiment 2)
In a normal home, there are many cases where the kitchen and the dining room are adjacent to each other. The blue sky lighting control unit 938 is connected to the kitchen dining controller 978 in the house, and control is performed based on the information of the clouds 906 and 907 of the external weather data. In this case, a normal lighting fixture 973 that normally emits light is also installed in the dining room, and it is possible to switch between the blue sky lighting that makes it possible to enjoy the atmosphere of eating outdoors and the normal lighting that makes it easy to imagine eating indoors. It is configured.

As shown in FIG. 44, even if the kitchen/dining controller is installed in the device management cloud 908, the configuration is basically the same. points are added.

Also, the blue sky lighting in such a kitchen dining room differs depending on whether the light emission mode is cooking or eating. is controlled by the emission mode of In FIG. 45, the abscissa indicates daytime, evening, nighttime and weather, and the ordinate indicates the light emission state of each lighting and the state of kitchen appliances. Here, since cooking is in progress, the lighting in the dining room is normal, and the lighting mode in the kitchen is linked to the time and weather. It is automatically determined that cooking is in progress when the number of openings and closings within a unit time exceeds a certain level.

In addition, as shown in FIG. 46, when the kitchen appliances are not operated for a certain period of time, it is determined that the dining room is eating or not cooking, and the dining room is illuminated by blue sky lighting fixtures linked to the time and weather. Normal lighting is performed by the user's operation.

FIG. 47 shows a more detailed control flow in the time-linked mode. Here, as a step 985 for starting cooking, the operation start of the refrigerator open/close, IH cooking heater, microwave oven, and range hood fan is confirmed, and the control flow 992 for the kitchen lighting is entered. The time-linked mode control of the lighting fixtures here is the same as in FIG. Also, the end of cooking is determined based on the timer setting or the fact that the cooking appliance has not been operated for a certain period of time, and the control flow 994 for the next dining lighting is performed. The time-linked mode of the dining lighting is similar to the case of FIG. 41, but judgment 995 as to whether or not the meal has ended is made by setting the timer or inputting to the smart device. switch to normal lighting. By doing this, it became possible to divide the space production during eating and when not eating, and to add sharpness to the rhythm of life.

Such spatial presentation switching can be applied to school lunch hours, office or factory lunch hours, and the like.

Also, FIG. 48 shows the control flow in the case of the weather interlocking mode, but when it is set in conjunction with the weather, if it is sunny, it is set to blue sky, otherwise it is set to cloudy sky, and it is controlled by each of the kitchen and the dining room. be done. Also, by combining with time interlocking, the sunset light emission may be performed depending on the time zone. Switching of the control flow between the kitchen and the dining room is performed depending on whether the cooking is finished or the meal is finished, and this is the same as the control flow shown in FIG.

(Embodiment 3)
A lighting system 1 according to Embodiment 3 will be described with reference to FIG. 12 . A lighting system 1 according to Embodiment 3 is a lighting system that controls a lighting device 2 provided in a bedroom when sleeping and when waking up. The configuration different from that of the first embodiment will be described below.

The lighting system 1 according to Embodiment 3 differs from Embodiment 1 in that the lighting device 2 provided in the bedroom is connected to the equipment communication section 32 of the lighting control device 3 . Further, control unit 30 does not include air conditioning control unit 305 and hot water supply control unit 306, but includes wake-up time acquiring unit 309, unlike in the first embodiment. Also, the operation performed by the control unit 30 is different from that of the first embodiment, but this will be described later in the explanation of the operation.

The operation unit 33 is, for example, a remote controller provided in the bedroom, and differs from the first embodiment in that the wake-up time can be set. Another difference from the first embodiment is that the user can switch to a sleeping mode (hereinafter referred to as a sleeping mode) by operating the operation unit 33 before going to bed. The operation of shifting to the bedtime mode corresponds to, for example, an operation of turning on only the night light in normal bedroom lighting.

The wake-up time acquisition unit 309 acquires the wake-up time set by the user by operating the operation unit 33, for example. Alternatively, the wake-up time acquisition unit 309 may acquire the wake-up time registered in a cloud server (not shown) on the Internet NT using a terminal device such as a mobile terminal or a smart speaker. The wake-up time obtaining unit 309 is an example of wake-up time obtaining means according to the present invention.

The color temperature determining unit 303 differs from the first embodiment in that the color temperature is determined based on the pattern shown in FIG. 13, for example. Among the rows shown in FIG. 13, the rows of “Daytime”, “Evening”, and “Nighttime” have the pattern shown in FIG. Also, the line of "time-linked off (except when sleeping and when waking up)" is generally the same as in the case of the first embodiment, except that it is not applied to the time of sleeping and when waking up, which will be described later. different from

The row of "at bedtime" is applied until the wake-up time when the user operates the operation unit 33 to shift to the bedtime mode. When the user operates the operation unit 33 to shift to the sleep mode, the color temperature determination unit 303 determines the color temperature to be 2500K. Note that the description of “(lower luminance gradually)” is not directly related to the color temperature determination by the color temperature determining unit 303, but is described to facilitate understanding of the lighting control during sleep. In other words, the illumination control unit 304 is different from the first embodiment in that the brightness is gradually decreased during sleep.

The "At wakeup time" line applies when the current time has passed the wakeup time. When the current time passes the wake-up time, the color temperature determination unit 303 determines the color temperature as 11000K. Note that the description of "(brighter brightness)" is not directly related to the color temperature determination by the color temperature determining unit 303 as described above, but is described to facilitate the lighting control at the time of waking up. In other words, the lighting control unit 304 differs from the first embodiment in that it performs control to increase the luminance when waking up.

Next, an example of lighting control operation by the lighting control device 3 will be described with reference to FIG. 14 . The operation shown in FIG. 14 is started, for example, when the user operates the operation unit 33 to shift to the sleep mode. Note that the operation before shifting to the sleep mode is the same as in the first embodiment with respect to lighting control, so description thereof will be omitted. Also, the description of the same operations as in the first embodiment will be simplified.

The color temperature determination unit 303 of the control unit 30 determines the color temperature as 2500K, and the lighting control unit 304 of the control unit 30 controls the lighting device 2 based on the determined color temperature (step S301). By this operation, the lighting device 2 imitates a sunset, and the user can experience the end of the day.

The lighting control unit 304 controls to gradually lower the brightness of the light emitted from the lighting device 2 for a certain period of time (step S302). The certain period of time is, for example, 30 minutes. In step S301, the user is made to experience the end of the day, and by this operation, the lighting device 2 darkens the bedroom while simulating a sunset, so that the user can be lulled to sleep.

After a certain period of time has elapsed, the lighting control unit 304 turns off the lighting (step S0303). Then, the control unit 30 waits until the wake-up time without performing any particular operation (step S304).

After the wake-up time has elapsed, the color temperature determination unit 303 determines the color temperature as 11000 K, and the lighting control unit 304 controls the lighting based on the determined color temperature to increase the luminance (step S305). This operation can prompt the user to wake up. A bright blue sky appears in the field of view of the user who opens his/her eyes due to the light with high brightness, so it can be expected that the user's drowsiness will be eliminated.

The control unit 30 waits for the operation of the operation unit 33 by the user (step S306). When the user performs some operation on the operation unit 33, it can be determined that the user is awake, so the control unit 30 ends the standby and the operation of lighting control when there is some operation.

The illumination system 1 according to Embodiment 3 has been described above. According to the lighting system 1 according to Embodiment 3, it is possible to lull the user to sleep when going to bed, and to encourage the user to wake up when waking up. Therefore, the lighting system 1 according to the third embodiment can realize a solution using the lighting device 2 that imitates the sky.

(Details of Embodiment 3)
In FIG. 49, the structure of the system is explained in more detail with respect to the blue sky lighting installed in the bedroom. In the drawing, the bedroom blue sky lighting 1006 is provided with a power source section 939 and a control section 938 , which are configured to be mode-controlled by the bedroom controller 1004 . Here, the bedroom controller 1004 is connected to a plurality of blue sky lights, general lights, etc., and a smart device 909 shown in the figure is connected in the house, and wake-up timing information for a smartphone alarm application and AI speaker alarm setting is It is now available. The bedroom controller 1004 is also connected to an external cloud, and weather data and time data can also be acquired via the cloud interface 1003 . This configuration enables the solution described above.

Also, FIG. 50 shows a case where the function of the bedroom controller 1004 is configured on the cloud of the device management cloud 908 . In this case, although it is necessary to prepare a device management cloud, there is no need for a HW controller in the home, and since the smart device 909 is originally a device connected to the cloud, information can be easily coordinated. In this case, the device management cloud and the external information cloud are connected by the inter-cloud Web-API to exchange information between the clouds.

In FIG. 51, the horizontal axis indicates the light emission mode of the bedroom lighting, daytime, evening, nighttime, and weather, and the vertical axis indicates the user's use scene and weather. Here, when waking up, it will be linked with the alarm clock function of the smartphone or AI speaker, but when going to bed, input the time reservation in advance, or go to bed at the timing when the lighting wall switch in the bedroom is turned off during a specific time period. I judge. In addition, since it is not necessarily used for sleeping during the daytime, if the user sets the blue sky lighting to OFF, the normal light emission mode will be used. done.

Also, FIG. 52 shows the control flow in the time-linked mode. The time-linked control itself for the room lighting in the bedroom is the same as in the case of the bathroom and the kitchen. At the time of day (step 1011), the lighting emission mode is controlled at the time of going to bed or waking up.

FIG. 53 shows the case of the weather interlocking mode, and the control of the weather interlocking as room lighting in the bedroom is the same as in the case of the bathroom and kitchen. (step 1011), the illumination light emission mode at the time of going to bed or waking up is controlled.

(Embodiment 4)
A lighting system 1 according to Embodiment 4 will be described with reference to FIG. 15 . A lighting system 1 according to Embodiment 4 is a lighting system that controls each lighting device 2 provided in an office building. Specifically, the lighting system 1 includes a lighting device 2c provided in a living room, a lighting device 2d provided in a conference room, a lighting device 2e provided in a break room, and a lighting device 2f provided in a corridor. are controlled based on the current date and time and information obtained from the entrance/exit management system 6. The configuration different from that of the first embodiment will be described below.

In the lighting system 1 according to Embodiment 4, the lighting device 2c in the living room, the lighting device 2d in the meeting room, the lighting device 2e in the break room, and the lighting device 2f in the corridor are connected to the device communication unit 32 of the lighting control device 3. differs from the first embodiment in that Moreover, the illumination control device 3 differs from the first embodiment in that the operation unit 33 is not provided. Also, the external communication unit 31 differs from the first embodiment in that it communicates with the entrance/exit management system 6 . Further, the illumination control unit 304 differs from the first embodiment in that it controls the illumination devices 2c to 2f. Further, control unit 30 does not include weather information acquisition unit 301, air conditioning control unit 305, and hot water supply control unit 306, but is provided with presence/absence determination unit 310 and reservation status acquisition unit 311, unlike in the first embodiment. Also, the operation performed by the control unit 30 is different from that of the first embodiment, but this will be described later in the explanation of the operation.

The entrance/exit management system 6 is an entrance/exit management system that manages the entrance/exit of each room in the office building. The entrance/exit management system 6 is connected to, for example, an entrance/exit card reader (not shown) provided at the entrance of each room, a conference room reservation touch panel (not shown) provided for reserving use of the conference room, and the like. It manages the entry and exit of each room in the office building based on the information acquired from the reader, touch panel, etc. The entrance/exit management system 6 particularly transmits to the lighting control device 3 information indicating whether or not there is a person entering the room and information indicating the reservation status of the conference room for each room.

The presence/absence determination unit 310 acquires information indicating whether or not a person is in the room for each room from the entrance/exit management system 6 via the external communication unit 31, and determines whether or not there is a person in each room. determine whether

The reservation status acquisition unit 311 acquires information indicating the reservation status of the conference room from the entrance/exit management system 6 via the external communication unit 31 . Here, the reservation of the conference room means to reserve the use of the conference room for a certain period of time, for example, by operating the conference room reservation touch panel. In addition, the reservation status of the conference room indicates in which time zone the use of the conference room is reserved. The reservation status acquisition unit 311 is an example of reservation status acquisition means according to the present invention.

The color temperature determination unit 303 differs from the first embodiment in that the color temperature is determined based on the pattern shown in FIG. 16, for example. Each row shown in FIG. 16 indicates how the color temperature should be determined when the current date and time is the start of work, during work, at the end of work, and during overtime after work. "Starting time" and "ending time" are, for example, 30 minutes after the starting time and ending time. In addition, "during work" is a time zone other than "starting time" and "ending time" in the working time zone. In the pattern shown in FIG. 16, at "at the beginning of work", workers are encouraged to wake up by imitating the blue sky at various places other than the rest room, and at "at the end of work", the sunset is simulated at each place other than the conference room. This allows workers to experience the end of the day and encourage them to go home.

Each column shown in FIG. 16 indicates how the color temperature should be determined for each location. However, for conference rooms, the color temperature determined according to the reservation status acquired by the reservation status acquisition unit 311 is different. The description of "(at the end of the reservation)" is the time when the period related to the reservation has ended, and is applied, for example, to 10 minutes after the period has elapsed. The description of "(reserved)" is when the conference room is being reserved at the current date and time, and is when the conference room is assumed to be in use at the current date and time. By setting the pattern as shown in FIG. 16, for example, the color temperature of the conference room is set to 11000K during working hours, and the color temperature is set to 2500K at the end of the reservation to prompt the end of the conference. In addition, at the end of the day, the color temperature of the conference room is set to 2500K in principle, while the color temperature is set to 11000K during reservation. When not in use, it can prompt the user to go home.

Next, an example of lighting control operation by the lighting control device 3 will be described with reference to FIG. 17 . The operation shown in FIG. 17 is started, for example, when the office building manager activates the lighting control device 3 . It should be noted that description of operations similar to those of the first embodiment will be simplified.

The presence/absence determination unit 310 of the control unit 30 of the lighting control device 3 determines whether or not there is a person at each location (step S401). However, it is assumed that entrance/exit management by the entrance/exit management system 6 is not possible for corridors, so no determination is made.

The reservation status acquisition unit 311 of the control unit 30 acquires the reservation status of the conference room (step S402). The reservation status acquisition unit 311 acquires, for example, reservation status for one day including the current date and time.

The color temperature determination unit 303 of the control unit 30 determines the color temperature for each location based on the reservation status acquired in step S402 and, for example, the pattern shown in FIG. 16 (step S403). At this time, it is not necessary to determine the color temperature for the place where it is determined that there is no person in step S401.

The lighting control unit 304 of the control unit 30 controls the lighting device 2 in the place determined to have people in step S401 based on the color temperature determined in step S403 (step S404). At the same time, the lighting control unit 304 performs lighting control to turn off the lighting device 2 in the place determined to be unoccupied in step S401 (step S405). Then, the control unit 30 repeats the operation from step S401.

The illumination system 1 according to Embodiment 4 has been described above. According to the lighting system 1 according to the fourth embodiment, effects such as simulating a blue sky by the lighting device 2 at the start of work to encourage waking up, and simulating a sunset by the lighting device 2 at the end of work to encourage going home can be expected. In addition, by determining the color temperature based on the reservation status of the conference room, it is possible to expect effects such as prompting the end of the conference when the reservation ends and not prompting the person to go home even at the end of the day if the conference is in progress. Therefore, the lighting system 1 according to the fourth embodiment can realize a solution using the lighting device 2 that imitates the sky.

(Modification 1 of Embodiment 4)
In Embodiment 4, unlike Embodiments 1 to 3, the current date and time or the weather and the color temperature are not linked. However, as in the first to third embodiments, the current date and time, the weather, and the color temperature may be linked. For example, during working hours, the color temperature may be determined based on the current date and time and the weather. Alternatively, for example, only the color temperature of the lighting device 2 in the break room may be determined based on the current date and time and the weather.

(Modification 2 of Embodiment 4)
In the fourth embodiment, "time of start of work", "during work", and "time of end of work" are defined based on the time in an area (hereinafter referred to as other area) whose time zone is different from that of the area where the lighting system 1 is introduced. good too. For example, if the work performed in the office where the lighting system 1 is installed is support for a customer who works in the other region, the time of the other region is used as a reference for "starting work", "during work", and By setting the "end time", it is expected that workers will be strongly aware of the current date and time in the other area.

Also, if the time difference between the area where the lighting system 1 is installed and the other area is not so large, for example, 1 hour or 2 hours, the middle time between the two areas may be used as the reference. For example, if the time difference between the two regions is two hours and the "start time" is set at 9:00 am, the actual "start time" in one region will be 8:00 am, and the actual "start time" in the other region will be 8:00 am. ' will be 10:00 am.

(Details of Embodiment 4)
FIG. 54 shows the details of the system configuration when an overall system for blue sky illumination and entrance/exit management is configured in a building. In the figure, the blue sky lighting 944 is composed of a power supply section 939 and a control section 938, as in the bedroom described above. Controls the entire floor including general lighting as well as blue sky lighting fixtures on the floor. In addition, this local controller is connected to a building controller 1019 that manages the entire building, and together with an entrance/exit management system 1027, the building controller 1019 can turn ON/OFF lighting, dimming, and scene settings in the lighting controller 1023. Mode control settings are controlled and managed throughout the building. In addition, the building controller 1019 and entrance/exit management system 1027 are connected to the cloud 1029 so that departments that conduct the same building management business and building security business can perform integrated management including systems of other buildings. be.

As shown in FIG. 55, the aforementioned building controller itself may be configured on the cloud. In this case, the lighting controller for each floor is directly connected to the management cloud 1031 and controlled. In addition, there are cases where the building's air conditioning and lighting management and the entrance/exit management system for security management are configured in separate management systems. 1032 and a device management cloud 1031 that controls building devices such as air conditioning lighting are connected by Web-API between clouds, and the display contents of this blue sky lighting are adjusted to the outside weather and the sunrise and sunset times. things become possible.

In addition, in the entrance/exit management system 1027, when an unauthorized outside intruder is detected, or when an emergency evacuation due to an earthquake or disaster occurs, the light emission color temperature of the blue sky lighting system of this case is changed, for example, red light or yellow light. It is also possible to notify employees and security guards of an abnormal situation by emitting light or flashing light.

FIG. 56 shows the details of the light emission mode of the blue sky lighting equipment. Strong blue sky light has the effect of making it easier to reset the human body clock. It can contribute to improvement. In addition, as described above, when prompting the end of a meeting, when encouraging people to go home, etc., all contribute to the improvement of work efficiency in the office. However, in meetings with external customers, etc., since it will hinder sales and marketing, it will be possible to change settings such as manually switching from the blue sky light emission. You can change the default manually.

In addition, referring to FIG. 57, a case will be described in which it is possible to use the effect of resetting the biological clock and to adjust the business hours in different regions by controlling this lighting fixture. In the figure, for example, when joint business is carried out between countries where the longitudes of office buildings are not so far apart, both offices are located in the middle of the time zone between the time difference between the A area office 1035 and the B area office 1036. By aligning the work start time and end time, it is possible to coordinate the time of joint meetings at both offices and meetings between employees.

For example, these are effective not only for improving operational efficiency within the same company, but also for promoting projects between separate companies such as joint development. In both cases, it is possible to smoothly adjust the body clock in daily repetitions, such as resetting the body clock by strong blue sky illumination and urging people to go home by glowing sunset.

In addition, for example, when there are many emergency meetings or early morning meetings between different time zones, such as joint project development, it is generally a factor that disturbs the body clock, but it is possible to work while utilizing the body clock adjustment function of this blue sky lighting. By synchronizing the times, the body clocks of the people involved can be synchronized and the burden on the human body can be reduced.

In addition, when it is difficult to secure personnel for call center operations and worldwide delivery operations, there are cases where overseas personnel are used to work together in offices with completely different time zones. For example, if the C area office and the A area office work together for the daytime work in the A area, so-called night work occurs in the C area, but considering the human load, it will be replaced with the daytime work for a certain period. Although these measures are taken, there is a problem that the burden on the human body increases if the body clock is not adjusted to the cycle of night work as soon as possible when starting night work. It is also possible to solve such local problems.

In addition, the above is about office work, but by improving 24-hour operation, the body clock of night shift workers can get used to it quickly, ensuring safety during work and improving work efficiency such as poka-yoke. .

(Embodiment 5)
A lighting system 1 according to Embodiment 5 will be described with reference to FIG. 18 . A lighting system 1 according to Embodiment 5 is a lighting system that controls a lighting device 2 provided in an underground space such as an underground mall. The configuration different from that of the first embodiment will be described below. In the following description, it is assumed that the lighting device 2 illuminates the underground mall.

A lighting system 1 according to Embodiment 5 differs from Embodiment 1 in that a ventilation device 14 is connected to a device communication unit 32 of a lighting control device 3 instead of the bathroom air conditioner 11 and water heater 12 . Further, control unit 30 differs from the first embodiment in that air conditioning control unit 305 and hot water supply control unit 306 are not provided, and ventilation control unit 312 is provided. Further, the operation unit 33 is, for example, a wall-mounted remote controller provided in the management room of the underground mall. Also, the operation performed by the control unit 30 is different from that of the first embodiment, but this will be described later in the explanation of the operation.

The ventilator 14 ventilates the underground mall by taking outside air from the ground space and sending it into the underground mall. Ventilation in an underground mall is generally performed by discharging the air in the underground mall to the ground space, but in Embodiment 5 there is a difference in that outside air is taken in from the ground space. By taking in outside air from the ground space, visitors to the underground mall can experience a fresh breeze. The ventilator 14 is an example of equipment, an air conditioner, and a ventilator according to the present invention.

The ventilation control unit 312 controls the ventilation device 14 so as to send outside air from the ground space to the underground mall. The ventilation control unit 312 also controls the on/off of the ventilator 14 . The ventilation control unit 312 is an example of device control means according to the present invention.

The color temperature determining unit 303 differs from the first embodiment in that the color temperature is determined based on the pattern shown in FIG. 19, for example. Each row shown in FIG. 19 is the same as the case of Embodiment 1 except that the lines are "immediately after opening", "during business", and "immediately before closing", and there is no "time-linked mode off". "Immediately after opening" is, for example, one hour after the underground mall opens. "Just before closing" is, for example, 30 minutes before closing of the underground mall. The opening of the underground mall means that the entrance to the underground mall is open to the public, and the closure of the underground mall means that the entrance to the underground mall is closed and the general public cannot enter. "During business" means a time period during which the entrance/exit of the underground mall is open, excluding "immediately after opening" and "immediately before closing".

Next, an example of device control operation by the lighting control device 3 will be described with reference to FIG. 20 . The operation shown in FIG. 20 is started, for example, when the current date and time is the opening time of the underground mall. It should be noted that description of operations similar to those of the first embodiment will be simplified.

The color temperature determination unit 303 of the control unit 30 of the lighting control device 3 determines the color temperature based on, for example, the pattern shown in FIG. 19 (step S501). The lighting control unit 304 of the control unit 30 controls the lighting device 2 based on the color temperature determined in step S501 (step S502).

The ventilation control unit 312 of the control unit 30 controls the ventilation device 14 so as to take outside air from the ground space and send it into the underground mall (step S503).

The control unit 30 determines whether or not the underground mall has closed based on the current date and time (step S504). When it is determined that the underground mall is not closed (step S504: No), the control unit 30 repeats the operation flow from step S501.

When it is determined that the underground mall has closed (step S504: Yes), the lighting control unit 304 controls to turn off the lighting device 2, and the ventilation control unit 312 controls to stop ventilation by the ventilation device 14 ( step S505). Then, the control unit 30 ends the device control operation.

The illumination system 1 according to Embodiment 5 has been described above. According to the lighting system 1 according to the fifth embodiment, the lighting device 2 imitates the sky while the ventilation device 14 takes in outside air and sends it into the underground shopping mall. You can feel it. Therefore, the lighting system 1 according to the fifth embodiment can realize a solution using the lighting device 2 that imitates the sky.

(Modification of Embodiment 5)
In the fifth embodiment, the outside air is always taken in by the ventilation device 14 during business hours. However, if it is assumed that visitors to the underground shopping mall will feel uncomfortable when outside air is taken in, such as when it rains or when the humidity is high, the ventilation device 14 may stop taking in outside air.

(Details of Embodiment 5)
FIG. 58 shows details of the configuration of the blue sky lighting and ventilation interlocking system in the underground store. Here, the blue sky illumination 1038 is configured together with the power source section 939 and the control section 938 , and the ventilation system 1039 is similarly configured together with the fan driving section 1040 and the control section 1041 . These are all controlled by the underground store controller 1042, and each scene is set and ON/OFF is performed. This underground store controller 1042 is connected to the device management cloud 908 and is capable of performing remote status monitoring and remote control, as well as cooperative control with other underground stores. The device management cloud 908 is connected to the external information clouds 906 and 907 via an inter-cloud Web-API, enabling coordinated control by obtaining not only time information but also weather information and sunrise/sunset times based on latitude and longitude. be.

Fig. 59 shows the setting of the underground store lighting. As in the case of the building management system, the blue sky lighting has the effect of resetting the body clock, so that the store can be refreshed when the store opens, and when the store ends, it encourages people to go home. effective. Also, even if the lighting and ventilation conditions are linked to reproduce the ground-like conditions, if the ground is uncomfortable, such as when it is raining or humid, turning off the ventilation linkage will force a faithful reproduction. It is necessary to consider not to do

Also, as described in the case of a building, when an unauthorized outside intruder is discovered, or during an emergency evacuation due to an earthquake or disaster, the light emission color temperature of the blue sky lighting system can be changed, for example, red light or yellow light. Alternatively, it is also possible to notify employees and security guards of an abnormal situation by flashing and emitting light.

(Embodiment 6)
A lighting system 1 according to Embodiment 6 will be described with reference to FIG. 21 . A lighting system 1 according to Embodiment 6 is a lighting system that controls a lighting device 2W provided as a window. The illumination system 1 also performs shielding control by a liquid crystal shutter 27W provided in the illumination device 2W. The lighting device 2W is fitted in, for example, a window frame of a house. The lighting device 2W may be fitted in a window frame provided on the ceiling and may be used in the same manner as a skylight. The configuration different from that of the first embodiment will be described below.

The lighting system 1 according to Embodiment 6 differs from Embodiment 1 in that the lighting device 2W is connected to the equipment communication section 32 of the lighting control device 3. FIG. Further, control unit 30 does not include air conditioning control unit 305 and hot water supply control unit 306, but includes shielding determination unit 313 and shielding control unit 314, unlike in the first embodiment. Also, the operation unit 33 differs from the first embodiment in that it is a remote control provided near the window frame, for example. Also, the operation performed by the control unit 30 is different from that of the first embodiment, but this will be described later in the explanation of the operation.

The color temperature determination unit 303 differs from the first embodiment in that, for example, similar to the shielding determination unit 313 described later, the color temperature is determined based on the pattern shown in FIG. Details of FIG. 22 will be described later.

The shielding determination unit 313 determines whether or not to open the liquid crystal shutter 27W of the illumination device 2W, that is, whether or not to shield external light by the liquid crystal shutter 27W, based on the pattern shown in FIG. 22, for example. The shielding determination unit 313 is an example of shielding determination means according to the present invention.

Each row shown in FIG. 22 shows how to determine whether to open the liquid crystal shutter 27W and how to determine the color temperature for each current date and time. The reason why the color temperature is not shown when the shutter is open is that the illumination should be turned off when the liquid crystal shutter 27W is opened because external light is guided. Each column shown in FIG. 22 shows how to determine whether to open the liquid crystal shutter 27W and how to determine the color temperature for each weather. “Sunny (extremely hot)” indicates weather in which, for example, the outside temperature is 35° C. or higher, and it is preferable to block solar radiation during the day. According to the pattern shown in FIG. 22, the liquid crystal shutter 27W is opened to guide the sunlight during the daytime, evening and sunny weather that is not extremely hot, and in the evening and sunny and extremely hot weather. During the daytime and in the heat of the sun, the liquid crystal shutter 27W is closed and the lighting device 2W simulates the sky.

The shielding control section 314 controls opening and closing of the liquid crystal shutter 27W based on the determination result of the shielding determination section 313 . The shielding control unit 314 is an example of shielding control means according to the present invention.

Next, an example of lighting control operation including shielding control by the lighting control device 3 will be described with reference to FIG. 23 . The operation shown in FIG. 23 is started, for example, when the user operates the operation unit 33 to turn on the lighting, and ends when the user turns off the lighting. It should be noted that description of operations similar to those of the first embodiment will be simplified.

The shielding determination unit 313 of the control unit 30 of the illumination control device 3 determines whether or not to shield with the liquid crystal shutter 27W based on, for example, the pattern shown in FIG. 22 (step S601).

When it is determined that shielding should be performed (step S601: Yes), the shielding control unit 314 of the control unit 30 performs shielding control to close the liquid crystal shutter 27W (step S602). The color temperature determination unit 303 of the control unit 30 determines the color temperature based on, for example, the pattern shown in FIG. 22 (step S603). The lighting control unit 304 of the control unit 30 controls the lighting device 2W based on the color temperature determined in step S603 (step S604). Then, the control unit 30 repeats the operation from step S601.

When it is determined that shielding should not be performed in step S601 (step S601: No), the shielding control unit 314 performs shielding control to open the liquid crystal shutter 27W (step S605). The illumination control unit 304 performs illumination control to turn off the illumination by the illumination device 2W (step S606). Then, the control unit 30 repeats the operation from step S601.

The illumination system 1 according to Embodiment 6 has been described above. According to the lighting system 1 according to Embodiment 6, in addition to the imitation of the sky by the lighting device 2W, by controlling the shielding of the liquid crystal shutter 27W, it is possible to switch between taking in external light and simulating the sky. Therefore, according to the lighting system 1 according to Embodiment 6, when it is preferable to take in outside light, the user can experience the outside light by opening the liquid crystal shutter 27W, and the outside light can be blocked. Even when it is preferable, it is possible to give the user a sense of openness by simulating the sky with the illumination device 2W. Therefore, the lighting system 1 according to the sixth embodiment can realize a solution using the lighting device 2W that imitates the sky.

(Details of Embodiment 6)
FIG. 61 shows the control system for this blue sky illuminated window. 1053 , device management cloud 908 , and external information clouds 906 and 907 . The controller in FIG. 61 may be a HW controller on the edge side, but it may also be in the remote control for operating the window lighting, or it may be configured as a function of the cloud system on the device management cloud. As a specific control example, in addition to keeping the outside visible as a window on sunny days with a good view, the light from the outside is blocked on dull rainy days, days with strong sunlight in summer, and at night. However, by using blue sky lighting, it is possible to get a sense of natural liberation and prevent the indoor temperature from rising due to strong sunlight in the summer. As for solar shading, there is also a method in which only the windows installed in the direction in which the sunlight is coming in are used for such blue sky lighting, and the remaining windows that are not exposed to the sunlight are normal windows.

Also, FIG. 68 shows an example of control in the case of a skylight. In the case of a skylight, since the window opens upward, it is normally controlled to a transparent window mode on sunny days, but when the sunlight is strong in the summer, the probability of light entering the skylight is particularly high. So set it to blue sky lighting mode. Also, if it is possible to set the window mode or cloudy sky on cloudy or rainy days, it is possible to set the external environment and the state when looking up at the skylight in the same way. In addition, it is possible to enjoy the feeling of freedom on a sunny day by setting the light to blue sky mode on rainy or cloudy days.

(Embodiment 7)
A lighting system 1 according to Embodiment 7 will be described with reference to FIG. 24 . A lighting system 1 according to Embodiment 7 is a lighting system that controls a lighting device 2W provided as a window of an aircraft. Specifically, it is a lighting system that controls the lighting device 2W based on the time zone of the destination to reduce the jet lag of passengers. The lighting device 2W is fitted in, for example, a window frame of an aircraft. As in the sixth embodiment, the illumination system 1 also performs shielding control by the liquid crystal shutter 27W provided in the illumination device 2W. The configuration different from that of the sixth embodiment will be described below.

The lighting system 1 according to Embodiment 7 differs from Embodiment 6 in that the weather server 4 is not provided. Moreover, the lighting control device 3 differs from the sixth embodiment in that the external communication unit 31 and the operation unit 33 are not provided. Further, it differs from the sixth embodiment in that the control unit 30 does not include the weather information acquisition unit 301 but includes a wake-up time acquisition unit 309 .

The wake-up time acquisition unit 309 is generally the same as the wake-up time acquisition unit 309 according to Embodiment 3, except that the wake-up time is set based on the time zone of the destination instead of being set by the user. It differs from the third embodiment. For example, setting 9:00 in the local time of the destination as the wake-up time can be expected to reduce jet lag for passengers.

The determination of the color temperature by the color temperature determination unit 303 and the determination of whether or not to be shielded by the shielding determination unit 313 are performed based on the pattern shown in FIG. 25, for example. In order to facilitate understanding, FIG. 25 also shows how the window looks from the passenger in each pattern. FIG. 25 is an example of a case of leaving Japan at 5:00 am Japan time and arriving in Belgium at 11:00 am Belgium time. However, it is assumed that daylight saving time is not applied to Belgian time.

The rows of "Japan time" and "Belgium time (non-daylight saving time)" shown in FIG. 25 indicate the same time in Japan time and Belgium time. The row of "illumination, shielding control" shows the determination of the color temperature at each time and the pattern of whether shielding is possible or not. The "window view" line shows how the window is viewed by the passenger.

In the example shown in FIG. 25, the arrival time is set to 11:00 am Belgian time, and the wake-up time is set to 9:00 am Belgian time. In the example shown in FIG. 25, the sleep time is assumed to be 7 hours, and the pattern is set so that the sleep preparation time is 1:00 midnight Belgian time and the bedtime is 2:00 midnight Belgian time.

In the example shown in FIG. 25, the liquid crystal shutter 27W is open from 5:00 midnight Japan time, which is the time of departure, to 9:00 am before sleep preparation. Since it is still too early to go to bed during this time period, the passenger can enjoy the scenery outside by opening the liquid crystal shutter 27W.

In the example shown in FIG. 25, at 9:00 in the morning in Japan time (1:00 in the middle of the night in Belgium time), the liquid crystal shutter 27W is already closed and the lighting device 2W simulates a sunset. It encourages passengers to go to bed by blocking outside light and mimicking a sunset. At 10:00 am in Japan time (2:00 am in Belgium time), the lights are also turned off to invite passengers to sleep. After 7 hours have passed, at 9:00 in the morning in Belgium time (17:00 in the afternoon in Japan time), the liquid crystal shutter 27W is closed and the blue sky is simulated by the lighting device 2W to encourage the passenger to wake up. At the arrival time of 11:00 in Belgium time (19:00 in Japan time), the liquid crystal shutter 27W is opened.

By setting the pattern based on the time zone in this way, it is possible to encourage the passenger to fall asleep and wake up at an appropriate time, thereby reducing the passenger's jet lag.

The operation of lighting control including shielding control by the lighting control device 3 is the same as in Embodiment 6, except that the color temperature is determined and whether shielding is possible or not is determined based on the pattern in FIG. Therefore, the explanation is omitted.

The illumination system 1 according to Embodiment 7 has been described above. According to the lighting system 1 according to Embodiment 7, by determining the color temperature and determining whether shielding is possible based on the time zone of the destination, it is possible to encourage the passenger to sleep and wake up at an appropriate time. Therefore, passengers' jet lag can be reduced. Therefore, the lighting system 1 according to the seventh embodiment can realize a solution using the lighting device 2W that imitates the sky.

FIG. 62 shows the changes in the window state with and without the blue sky lighting, arranged in chronological order so that sleep time can be secured as long as possible, including the transition from the sunset to the shaded state. It is what I did. In addition, as a method of controlling the window state at this time, so as to match the body clock to the time difference state of the final destination, the blue sky lighting is highly effective in resetting the body clock, and the transition from sunset to shading that makes it easy to fall asleep. are combined to control the arrival time so that it approaches the local time difference.

(Embodiment 8)
A lighting system 1 according to Embodiment 8 will be described with reference to FIG. 26 . The lighting system 1 according to Embodiment 8 is a lighting system that controls, for example, a lighting device 2W provided as a window in an office building for power demand control (hereinafter simply referred to as "demand control"). A plurality of lighting devices 2W are usually provided, and although a plurality of lighting devices 2W are shown in FIG. 26, a single lighting device 2W may be provided. The illumination system 1 also performs shielding control by a liquid crystal shutter 27W provided in the illumination device 2W. The lighting device 2W is fitted in, for example, a window frame of an office building. The configuration different from that of the sixth embodiment will be described below.

The lighting system 1 according to Embodiment 8 differs from Embodiment 6 in that the external communication unit 31 of the lighting control device 3 communicates with the demand management server 7 on the Internet NT. Further, the lighting control device 3 differs from the sixth embodiment in that the lighting control device 3 does not include the operation unit 33 but includes the device information storage unit 34 . Moreover, it differs from the sixth embodiment in that the control unit 30 does not include the weather information acquisition unit 301 . Also, the operation performed by the control unit 30 is different from that of the sixth embodiment, but this will be described later in the explanation of the operation.

The device information storage unit 34 stores device information related to the lighting device 2W, which is necessary for demand control. The device information stored in the device information storage unit 34 is, for example, as shown in FIG. Note that FIG. 27 shows information about one lighting device 2W. In the eighth embodiment, since there are usually a plurality of lighting devices 2W, information as shown in FIG. 27 is stored in the device information storage unit 34 for each lighting device 2W. The device information stored in the device information storage unit 34 is transmitted to the demand management server 7 as appropriate by the control unit 30 and stored in the demand management server 7 . The demand management server 7 also stores device information regarding devices other than the lighting device 2W, which is transmitted from another device (not shown).

The device ID is an ID for individually identifying the lighting device 2W. The building ID is an ID that indicates the building in which the lighting device 2W is installed. The group ID refers to a group to which the lighting device 2W belongs, among groups determined for each demand control unit. For example, a plurality of lighting devices 2W installed on the same floor and having the same installation orientation belong to one group. The installation orientation is the installation orientation of the lighting device 2W used as a window. Since the lighting device 2W installed facing south takes in a large amount of solar radiation, it can be preferentially targeted for demand control. The installation height indicates the height from the ground where the lighting device 2W is installed. Surrounding building impact indicates how easily solar radiation is blocked by surrounding buildings. The availability of demand control indicates whether or not the lighting device 2W is subject to demand control by the demand management server 7 . A corresponding function indicates a function that the lighting device 2W has. Since the demand management server 7 also stores device information on devices other than the lighting device 2W, this item is provided to distinguish it from other devices.

The demand management server 7 generates demand information indicating an instruction for demand control of the lighting device 2W based on the device information of the lighting device 2W received from the lighting control device 3 and stored and the weather information acquired from the weather server 4. Create and transmit to the lighting control device 3 . The demand management server 7 is, for example, a cloud server operated by an electric power company that supplies power to an office building provided with the lighting device 2W.

Demand information created by the demand management server 7 is, for example, as shown in FIG. The demand control ID is an ID for individually identifying each instruction of demand control. The building ID is an ID for specifying the building in which the device to be controlled is installed. A group ID is an ID for specifying a group of devices to be controlled. Here, it is assumed that the demand control instruction is applied to each group. The content of control indicates the specific content of demand control. Since the example shown in FIG. 28 is an example in which the device is the lighting device 2W, the control contents are the opening and closing of the liquid crystal shutter 27W of the lighting device 2W and the determination of the color temperature of the lighting device 2W.

The demand management server 7 determines the control contents of the lighting device 2W, for example, based on the weather information and the installation orientation, installation height, and influence of surrounding buildings shown in FIG. For example, in the example shown in FIG. 27, it is assumed that the illumination device 2W is exposed to strong sunlight during the daytime, and the power consumption of the air conditioner on the floor on which the illumination device 2W is installed is expected to increase. Therefore, by closing the liquid crystal shutter 27W of the lighting device 2W during the daytime and simulating a blue sky with the lighting device 2W, it is possible to reduce the power consumption of the air conditioner by shielding the sunlight and reducing the power consumption of the air conditioner, while the blue sky is visible to those in the building. can be experienced.

Next, an example of lighting control operation including shielding control by the lighting control device 3 will be described with reference to FIG. 29 . The operation shown in FIG. 29 is started, for example, when the office building manager activates the lighting control device 3 . Note that the description of the same operations as in the first and sixth embodiments will be simplified.

The control unit 30 of the lighting control device 3 acquires demand information from the demand management server 7 via the external communication unit 31 (step S801).

The color temperature determination unit 303 of the control unit 30 determines the color temperature based on the demand information (step S802). For example, when the demand information is as shown in FIG. 28, the color temperature determination unit 303 determines the color temperature according to the control details indicated by the demand information.

The shielding determination unit 313 of the control unit 30 determines whether or not the liquid crystal shutter 27W should shield based on the demand information (step S803). For example, when the demand information is as shown in FIG. 28, the shielding determination unit 313 determines whether or not to shield according to the control details indicated by the demand information.

When it is determined that shielding should be performed (step S804: Yes), the shielding control unit 314 of the control unit 30 performs shielding control to close the liquid crystal shutter 27W (step S805). The lighting control unit 304 of the control unit 30 controls the lighting device 2W based on the color temperature determined in step S802 (step S806). Then, the control unit 30 executes the operations from step S809.

When it is determined that shielding should not be performed (step S804: No), the shielding control unit 314 performs shielding control to open the liquid crystal shutter 27W (step S807). The illumination control unit 304 performs illumination control to turn off the illumination by the illumination device 2W (step S808). Then, the control unit 30 executes the operations from step S809.

The control unit 30 waits until the demand information transmitted by the demand management server 7 is updated (step S809). After the demand information is updated, the control unit 30 repeats the operations from step S801.

The illumination system 1 according to the eighth embodiment has been described above. According to the lighting system 1 according to the eighth embodiment, based on the demand information created by the demand management server 7, power consumption is reduced by simulating a blue sky with the lighting device 2W while shielding solar radiation with the liquid crystal shutter 27W. Even if solar radiation is shielded for reduction, people in the building can experience the blue sky. Therefore, the lighting system 1 according to the eighth embodiment can realize a solution using the lighting device 2W that imitates the sky.

(Modification 1 of Embodiment 8)
In Embodiment 8, the lighting control device 3 controls the lighting device 2W and the liquid crystal shutter 27W based on the demand information created by the demand management server 7. FIG. However, the lighting control device 3 may be a cloud server on the Internet NT integrated with the demand management server 7 .

(Modification 2 of Embodiment 8)
In the eighth embodiment, the lighting control device 3 makes both the determination of the color temperature by the color temperature determination unit 303 and the determination by the shield determination unit 313 based on the demand information. However, the lighting control device 3 may perform the determination by the shielding determination unit 313 based on the demand information, and perform the determination of the color temperature by the color temperature determination unit 303 independently of the demand information.

(Details of Embodiment 8)
FIG. 63 shows the details of the cloud configuration of the system that performs demand control when a building 1058 with blue sky lighting windows and a house 1059 are located in a smart town. There is a building management cloud 1061 that manages the zero energy building system, and a smart town management cloud 1062 that manages demand for HEMS and the like for houses. and a weather information cloud 1064 that provides weather information.

As described above, the blue sky lighting window has the effect of reducing the air conditioning load during the daytime by using the shutter function as shown in FIG. There is At this time, the control of the blue sky lighting windows of the building 1058 and the house 1059 depends not only on the weather, but also on the installation direction of the windows, the floor level, and the direction of the neighboring building. The commands exchanged by Web-API between the demand management cloud 1063 and the building management cloud 1061 and smart town management cloud 1062 are defined as follows.
(a) As shown in FIG. 65, when describing in the order of "number IoT data attribute IoT data", as data sent from a building or house to the demand management cloud,
(i) Regarding IDs and classifications for control,
1 Building ID Building number 2 Town ID Smart town number, house number 3 Window group classification Number of window group classifications 4 Window group ID Corresponding group number in the window group 5 Window area ID Area number in the corresponding window group (ii) Window control As the attribute information required when
6 Window area solar radiation attribute Window orientation (direction), window height 7 Window area shadow attribute Classification of influence of shadows from surrounding buildings 8 Window equipment attribute Controllable, luminous possible 9 Demand response availability Whether or not demand is suppressed 10 Attributes for light emission Luminosity range, color temperature control range 11 Rayleigh support Availability of Rayleigh scattering function is required.
(b) As shown in FIG. 66, when described in the order of "number demand attribute demand data", the control command issued from the demand management cloud 1062 is:
(iii) As the identification ID and command ID to be controlled,
1 Demand issue ID Demand instruction ID number, issue date and time information 2 Building ID Demand instruction destination building ID
3 Town ID/house ID Demand instruction destination town ID/house ID
4 Window group ID Window group to which demand is indicated 5 Window area ID Area number to which demand is indicated (iv) As demand instruction contents,
6 Demand schedule instruction Weekly demand instruction schedule 7 Instruction content Transparent (window), shutter (non-transmissive), normal light emission/Rayleigh scattered light 8 Light emission instruction details Brightness, color temperature, flashing (emergency)
9 Details of light emission instructions Direction of light emission at sunset, degree of transparency (shutter)
10 Issuance of next instruction Advance notice of next instruction timing 11 Priority setting Manual priority, demand priority instruction setting 12 Rayleigh support availability Rayleigh scattering function ON/OFF
is issued, and the actual building or house is controlled via the building management cloud or smart town management cloud.

As the data format here, for example, in addition to sending the attribute 1065 and data 1066 from the demand management cloud 1063 in a format using JSON schema, etc., IoT data attribute 1067 and IoT data 1068 are transmitted in a data format such as the above-described JSON schema using Web-API between clouds.

FIG. 67 shows the flow of demand control in the lighting controller, for example, as control of the window on the edge side. In this system, the window information is sent to the demand management cloud 1063 at step 1074 . The data sent at this time is a JSON schema file composed of IoT data attribute 1067 and IoT data 1068, and is distributed from building management cloud 1060 or smart town management cloud 1062 to demand management cloud 1063 via Web-API.

Here, the illuminated window is once reset to the window mode (default) (step 1075), and after judging whether the mode setting of the controller is time-linked mode (step 986) or demand response (step 1076), whether it is time-linked. If the demand is met, the window control schedule is received (step 1077), the demand information is received (step 1078), and the window control schedule is corrected (step 1080). 1079).

After that, in steps 1081 and 1082, the window shutter is closed, and if there is an instruction to emit blue sky illumination, control is performed so that blue sky illumination is performed.

(Other modifications)
In each of the above embodiments, the color temperature for simulating a blue sky is 11000K, the color temperature for simulating a cloudy sky is 6000K, and the color temperature for simulating a sunset is 2500K. The color temperature is not limited to this. For example, the temperature for simulating the blue sky may be a color temperature such as 9000K, 15000K, or the like, at which humans can perceive "blue". Similarly, for cloudy skies, a color temperature such as 5500K or 6500K that humans can perceive as "white" may be used. Similarly, the sunset may be at a color temperature such as 1500K or 2000K that humans can perceive as "red" or "orange".

In the illumination device 2 or the illumination device 2W described above, the illumination light L1 is emitted from only one direction. However, for example, two or more light emitting units 23 may be provided to irradiate the irradiation light L1 from a plurality of directions. For example, by irradiating the illumination light L1 with different brightness and color temperature from two directions of the longitudinal direction and the lateral direction, it is possible to imitate a gradated sky pattern on the light guide plate 24 .

In the hardware configuration shown in FIG. 7, the lighting control device 3 has a secondary storage device 1004 . However, the configuration is not limited to this, and the secondary storage device 1004 may be provided outside the lighting control device 3 and the lighting control device 3 and the secondary storage device 1004 may be connected via the interface 1003 . In this form, removable media such as USB flash drives, memory cards, etc. can also be used as the secondary storage device 1004 .

Further, instead of the hardware configuration shown in FIG. 7, the lighting control device 3 may be configured with a dedicated circuit using ASIC (Application Specific Integrated Circuit), FPGA (Field Programmable Gate Array), or the like. good. Further, in the hardware configuration shown in FIG. 7, part of the functions of the lighting control device 3 may be implemented by a dedicated circuit connected to the interface 1003, for example.

1 lighting system, 2, 2W lighting device, 3 lighting control device, 4 weather server, 5 controller, 6 entrance/exit management system, 7 demand management server, 11 bathroom air conditioner, 12 water heater, 13 kitchen equipment, 14 ventilation device, 21 control unit, 22 communication unit, 23 light emitting unit, 24 light guide plate, 25 reflector, 26 normal lighting unit, 27 W liquid crystal shutter, 28 second light emitting unit, 29 diffusion plate, 30 control unit, 31 external communication unit, 32 equipment communication unit, 33 operation unit, 34 device information storage unit, 301 weather information acquisition unit, 302 date and time acquisition unit, 303 color temperature determination unit, 304 lighting control unit, 305 air conditioning control unit, 306 hot water supply control unit, 307 state detection unit, 308 determination unit 309 wake-up time acquisition unit 310 presence/absence determination unit 311 reservation status acquisition unit 312 ventilation control unit 313 shielding determination unit 314 shielding control unit 1000 bus 1001 processor 1002 memory 1003 interface 1004 Secondary storage device, L1 irradiation light, L2 scattered light, L3 normal light, L4 external light, LS second irradiation light, LT transmitted light, NT Internet.

Claims (12)

Equipped with a lighting device that imitates the sky to illuminate the bathroom , a lighting control device, and equipment,
The device includes a bathroom air conditioner that air-conditions the bathroom and a water heater that supplies hot water to a bathtub provided in the bathroom ,
The lighting control device
a color temperature determination means for determining the color temperature of the sky emulated by the lighting device;
lighting control means for controlling the lighting device based on the color temperature determined by the color temperature determination means;
and a device control means for controlling the device ,
The device control means controls the bathroom air conditioner to blow air into the bathroom, and controls the water heater to supply foamed hot water to the bathtub.
lighting system. Equipped with a lighting device that imitates the sky and illuminates the underground space, a lighting control device, and equipment,
The equipment includes a ventilation device that takes in outside air from an aboveground space and sends it into the underground space,
The lighting control device
a color temperature determination means for determining the color temperature of the sky emulated by the lighting device;
lighting control means for controlling the lighting device based on the color temperature determined by the color temperature determination means;
and a device control means for controlling the device,
The device control means controls the ventilation device so as to send outside air from the aboveground space to the underground space.
lighting system. Equipped with a lighting device that imitates the sky and illuminates the space, a lighting control device, and equipment,
The lighting control device
a color temperature determination means for determining the color temperature of the sky emulated by the lighting device;
a state detection means for detecting the state of the device;
determination means for determining whether or not to imitate the sky with the lighting device based on the state of the equipment detected by the state detection means;
lighting control means for controlling the lighting device based on the color temperature determined by the color temperature determining means when the determining means determines that the lighting device should imitate the sky;
lighting system. The lighting device illuminates the kitchen,
the equipment includes kitchen equipment provided in the kitchen;
The state detection means detects the use state of the kitchen appliance,
The determination means determines whether or not cooking is being performed in the kitchen based on the state of use of the kitchen appliance detected by the state detection means, and determines whether or not cooking is being performed. determining whether to imitate the sky with a lighting device;
4. A lighting system according to claim 3 . A lighting device that imitates the sky to illuminate the bedroom and a lighting control device,
The lighting control device
A wake-up time acquiring means for acquiring a wake-up time at which the user sleeping in the bedroom should wake up;
a color temperature determination means for determining the color temperature of the sky emulated by the lighting device;
lighting control means for controlling the lighting device based on the color temperature determined by the color temperature determining means;
The color temperature determining means determines the color temperature so that the lighting device imitates a blue sky when the wake-up time has passed.
lighting system. Equipped with a lighting device that imitates the sky and illuminates the room, and a lighting control device,
The lighting control device
Reservation status acquisition means for acquiring reservation status for use of the room;
a color temperature determination means for determining the color temperature of the sky emulated by the lighting device;
lighting control means for controlling the lighting device based on the color temperature determined by the color temperature determining means;
The color temperature determination means determines the color temperature based on the current date and time and the reservation status.
lighting system. Equipped with a lighting device that imitates the sky and illuminates the space, and a lighting control device,
The lighting device
a transmitting portion that transmits external light and guides the light to the space;
and a shielding means for shielding the external light,
The lighting control device
a shielding determination means for determining whether or not the external light should be shielded by the shielding means;
a color temperature determination means for determining the color temperature of the sky emulated by the lighting device;
Shielding control means for controlling the shielding means based on the result of determination by the shielding determination means;
lighting control means for controlling the lighting device based on the determination result by the shielding determination means and the color temperature determined by the color temperature determination means;
lighting system. The lighting device illuminates an interior of the aircraft,
The lighting control device further comprises a wake-up time acquiring means for acquiring a wake-up time at which passengers sleeping in the cabin of the aircraft should wake up,
The shielding determination means determines whether or not the external light should be shielded by the shielding means based on the current time and the wake-up time,
The color temperature determination means determines the color temperature based on the current time and the wake-up time.
8. A lighting system according to claim 7 . The shielding determination means determines whether or not the external light should be shielded by the shielding means based on demand information, which is information relating to demand control of the lighting device.
8. A lighting system according to claim 7 . a color temperature determination means for determining the color temperature of the sky simulated by the lighting device that imitates the sky and illuminates the space;
a state detection means for detecting the state of the device;
determination means for determining whether or not to imitate the sky with the lighting device based on the state of the equipment detected by the state detection means;
lighting control means for controlling the lighting device based on the color temperature determined by the color temperature determining means when the determining means determines that the lighting device should imitate the sky ;
A lighting control device comprising: determining the color temperature of the sky to be simulated by a lighting device that simulates the sky to illuminate the space;
Detects device status,
determining whether or not to imitate the sky with the lighting device based on the detected state of the device;
when it is determined that the lighting device should imitate the sky, controlling the lighting device based on the determined color temperature;
control method. to the computer,
determining the color temperature of the sky to be simulated by a lighting device that imitates the sky and illuminates the space;
detect the state of the device,
determining whether or not to imitate the sky with the lighting device based on the detected state of the device;
When it is determined that the lighting device should imitate the sky, the lighting device is controlled based on the determined color temperature;
program.

Images