Environment control system, environment control method, and program

Abstract

To facilitate an improvement of feeling of a user who performs an operation in an operation space.SOLUTION: An environment control system 100 comprises: an irradiation control part 11; and an acoustic control part 12. The irradiation control part 11 controls an irradiation level and a color temperature of an irradiation load 6 to be provided in an operation space 4. The acoustic control part 12 controls an acoustic device 7 to be provided to the operation space 4. The irradiation control part 11 controls the irradiation load 6 so that the color temperature of a light emitted by the irradiation load 6 is 5000K or less, and an irradiation level of the operation space 4 becomes 300lx or more. The acoustic control part 12 controls the acoustic device 7 so as to reproduce a natural environment sound of the operation space 4. An irradiation load 5 includes a diffusion type light distribution characteristic.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an environmental control system, an environmental control method, and a program.

Background Art

[0002] Patent Document 1 discloses an acoustic lighting device. This acoustic lighting device includes a lighting unit, an acoustic output unit, a setting unit, and a control unit. The setting unit sets at least one parameter of the lighting of the lighting unit and the acoustic output of the acoustic output unit according to the recognized user present in the surroundings. The control unit controls at least one of the lighting of the lighting unit and the acoustic output of the acoustic output unit according to the parameter set by the setting unit.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The present invention provides an environmental control system, an environmental control method, and a program that can easily improve the mood of a user working in a work space.

Means for Solving the Problems

[0005] An environmental control system according to an aspect of the present invention includes a lighting control unit that controls the illuminance and color temperature of lighting loads assigned to each of a plurality of work spaces so as to make the lighting environments of the plurality of work spaces different from each other, and an acoustic control unit that controls acoustic devices assigned to each of the plurality of work spaces so as to make the sound environments of the plurality of work spaces different from each other. The lighting load assigned to a first work space among the plurality of work spaces has a diffused light distribution characteristic. The lighting control unit controls the lighting load assigned to the first work space such that the color temperature of the light emitted by the lighting load assigned to the first work space is 5000 K or less and the illuminance of the work space is 300 lx or more. The acoustic control unit controls the acoustic device assigned to the first work space to reproduce natural environmental sounds in the first work space.

[0006] An environmental control method according to an aspect of the present invention includes a lighting control step of controlling the illuminance and color temperature of lighting loads provided in each of a plurality of work spaces, and an acoustic control step of controlling acoustic devices provided in each of the plurality of work spaces. The lighting load provided in a first work space among the plurality of work spaces has a diffused light distribution characteristic. In the lighting control step, the lighting load provided in the first work space is controlled such that the color temperature of the light emitted by the lighting load provided in the first work space is 5000 K or less and the illuminance of the work space is 300 lx or more. In the acoustic control step, the acoustic device provided in the first work space is controlled to reproduce natural environmental sounds in the first work space.

[0007] A program according to an aspect of the present invention causes one or more processors to execute the environmental control method.

Advantages of the Invention

[0008] The environmental control system, environmental control method, and program of the present invention have an advantage that it is easy to improve the mood of a user working in a work space.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

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Figure 7

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Figure 9

DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, the embodiments will be specifically described with reference to the drawings. Note that each of the embodiments described below shows an inclusive or specific example. The numerical values, shapes, materials, components, arrangement positions and connection forms of the components, steps, order of steps, etc. shown in the following embodiments are merely examples and are not intended to limit the present invention. In addition, among the components in the following embodiments, the components not described in the independent claims are described as optional components.

[0011] Note that each figure is a schematic diagram and is not necessarily drawn precisely. Also, in each figure, the same reference numerals are given to substantially the same configurations, and duplicate descriptions may be omitted or simplified.

[0012] (Embodiment) [Work Space] First, the working space 4 in which the environmental control system 100 according to the embodiment is used will be described. FIG. 1 is a block diagram showing the functional configuration of the environmental control system 100 according to the embodiment. FIG. 2 is a schematic diagram showing an example of the working space 4 in which the environmental control system 100 according to the embodiment is used.

[0013] The environmental control system 100 according to the embodiment is used in a working space 4 where a user U1 such as in an office performs work, and is a system for controlling the environment in such a working space 4. In the embodiment, it is assumed that the environmental control system 100 is used in an ABW (Activity Based Working)-type office 3 where the user U1 can freely select a working place according to the work to be performed. Here, "ABW" refers to a working style in which the user U1 (such as an employee) selects a place to work or a desk or the like according to the work content. In an ABW-type office, when the user U1 performs work that requires concentration, the user U1 can select a place with relatively high sound insulation, and when having a meeting, the user U1 can select a relaxing place such as a sofa.

[0014] Note that the environmental control system 100 is not limited to an ABW-type office, and may be used in a free-address type office, or may be used in other spaces as long as it is a space where the user U1 can freely select a working place according to the work to be performed. For example, the environmental control system 100 may be used in an educational facility such as a primary school, junior high school, high school, or university, may be used in a public facility such as a community center or library, or may be used in a store or commercial facility.

[0015] Also, the working space 4 in which the environmental control system 100 is used is not limited to a space where the user U1 can freely select a working place as described above, and may be used, for example, in an office where the working place of the user U1 is fixed.

[0016] In the example shown in FIG. 2, the office 3 has a plurality (here, six) of workspaces 4. In each workspace 4, furniture 5 for one or more users U1 to perform work is installed. In the example shown in FIG. 2, the work performed by the user U1 is work using an information terminal 8 owned by the user U1, such as a laptop personal computer. Note that the information terminal 8 may be a desktop personal computer, or may be a smartphone or a tablet terminal or the like. Also, in the example shown in FIG. 2, the furniture 5 includes a desk 51 and one or more chairs 52.

[0017] In the example shown in FIG. 2, the adjacent workspaces 4 are not partitioned, but may be partitioned by, for example, a wall or furniture. As an example, the office 3 may be composed of a plurality of rooms partitioned by a wall or furniture or the like. In this case, the workspace 4 may be each of the plurality of rooms, or may be a part of the plurality of rooms.

[0018] A lighting load 6 is installed in the workspace 4. In the embodiment, the lighting load 6 is installed on the ceiling of the workspace 4. Of course, the lighting load 6 may be installed not only on the ceiling of the workspace 4, but also on furniture such as a wall, a floor, or a desk. In the example shown in FIG. 2, a plurality (here, nine) of lighting loads 6 are installed on the ceiling of the office 3. Here, the office 3 is evenly divided into six workspaces 4, and a plurality (here, two) of lighting loads 6 are installed in each workspace 4. Note that among the lighting loads 6, there are also lighting loads that are shared by a plurality of workspaces 4. As an example, the lighting load 6 located at the center of the ceiling of the office 3 shown in FIG. 2 is shared by two workspaces 4.

[0019] In addition, an acoustic device 7 is installed in the working space 4. In the embodiment, the acoustic device 7 is installed on the ceiling of the working space 4. Of course, the acoustic device 7 may be installed not only on the ceiling of the working space 4 but also on furniture such as walls, floors, or desks. In the example shown in FIG. 2, a plurality (here, eight) of acoustic devices 7 are installed on the ceiling of the office 3, and a plurality (here, two) of acoustic devices 7 are installed in each working space 4. Note that there are also acoustic devices that are shared by a plurality of working spaces 4 among the acoustic devices 7. As an example, the two acoustic devices 7 located at the back center of the office 3 shown in FIG. 2 are both shared by two working spaces 4.

[0020] The lighting load 6 provides a lighting environment in the working space 4 by illuminating the working space 4 with illumination light. The parameters of the lighting environment may include, for example, the illuminance of the illumination light, the color temperature (light color), or the light distribution. In the embodiment, the lighting load 6 is a base light as ambient lighting that uniformly illuminates the target space and includes a light source having a solid light-emitting element such as an LED (Light Emitting Diode). That is, the lighting load 6 has a diffused light distribution characteristic. The light source of the lighting load 6 is configured to be able to perform dimming, color adjustment, or both by being controlled by the lighting control unit 11.

[0021] Note that the lighting load 6 may be a spotlight as a task light. That is, the lighting load 6 may have a condensing light distribution characteristic. Further, the lighting load 6 is not limited to a spotlight and may be, for example, a floor lamp, a downlight, or a universal downlight. Furthermore, the lighting load 6 may include both a lighting load having a diffused light distribution characteristic and a lighting load having a condensing light distribution characteristic.

[0022] In addition, the solid light-emitting element used for the lighting load 6 is not limited to an LED and may be an organic EL (Electro-Luminescence) element or the like. Furthermore, the lighting load 6 is not limited to a light source having a solid light-emitting element and may be a fluorescent lamp or the like.

[0023] Incidentally, in the embodiment, in two adjacent spaces, the lighting load 6 installed in one space does not necessarily strictly affect only the lighting environment of one space, and it is allowed to affect the other space. That is, in any work space 4, it is sufficient that the lighting environment provided by the lighting load 6 corresponding to the work space 4 is the main lighting environment. Even if there is an influence from the lighting load 6 corresponding to a space different from the work space 4, it is only necessary that it hardly affects the lighting environment of the work space 4. This is because at this time, it is considered that the influence exerted by the lighting load 6 corresponding to a space different from the work space 4 on the user U1 existing in the work space 4 is limited.

[0024] The audio device 7 provides an acoustic environment in the target space by outputting sound into the space. The parameters of the acoustic environment may include, for example, the content to be played, or the volume. The audio device is, for example, an omnidirectional speaker, and reproduces the content transmitted from the acoustic control unit 12 under the control of the acoustic control unit 12. Note that the audio device 7 may be a speaker having directivity, such as a parametric speaker, a speaker using ultrasonic waves, or a speaker having a horn-shaped housing. When a speaker having directivity is used, an effect can be expected that it is easy to reduce the ratio of some sound leaking into other spaces.

[0025] Incidentally, in the embodiment, in two adjacent spaces, the sound output from the audio device 7 installed in one space does not necessarily have to be output only to one space, and it is allowed that some sound leaks into the other space. That is, in any work space 4, it is sufficient that the sound output from the audio device 7 corresponding to the work space 4 is the main sound. Even if a part of the sound from a space different from the work space 4 leaks in, it is only necessary that it hardly affects the acoustics of the work space 4.

[0026] [Environmental control system] As shown in FIG. 1, the environmental control system 100 includes a lighting control unit 11, an acoustic control unit 12, a storage unit 13, and a display device 2. In the embodiment, the environmental control system 100 only needs to include at least the lighting control unit 11 and the acoustic control unit 12, and does not necessarily need to include the storage unit 13 and the display device 2. Further, the components of the environmental control system 100 excluding the display device 2 may be installed in the office 3 or may be installed at a remote location away from the office 3.

[0027] The lighting control unit 11 is capable of communicating with the lighting loads 6 installed in each work space 4, and controls each lighting load 6 by transmitting a lighting control signal to each lighting load 6. That is, the lighting control unit 11 controls the lighting load 6 for each work space 4. In the embodiment, the lighting control unit 11 controls both the dimming and color adjustment of each lighting load 6. The communication between the lighting control unit 11 and each lighting load 6 may be wired communication, wireless communication, and the communication standard is not particularly limited.

[0028] In the embodiment, the lighting control unit 11 is also capable of communicating with the display device 2, and is also capable of receiving a signal including a lighting control input received by the display device 2 by communicating with the display device 2. In this case, the lighting control unit 11 controls each lighting load 6 according to the received lighting control input. The communication between the lighting control unit 11 and the display device 2 may be wired communication, wireless communication, and the communication standard is not particularly limited.

[0029] The acoustic control unit 12 is capable of communicating with the acoustic devices 7 installed in each work space 4, and controls each acoustic device 7 to reproduce content by transmitting an acoustic control signal (including the content to be reproduced) to each acoustic device 7. That is, the acoustic control unit 12 controls the acoustic device 7 for each work space 4. The communication between the acoustic control unit 12 and each acoustic device 7 may be wired communication, wireless communication, and the communication standard is not particularly limited.

[0030] Alternatively, the content may be stored in the audio control unit 12, may be stored in each audio device 7, or may be stored in the storage unit 13. The content is stored in an electronic data medium such as, for example, the WAV format or the mp3 format, but is not limited thereto, and may be stored by any known storage method such as, for example, a compact disc (CD).

[0031] In the embodiment, the audio control unit 12 is also communicable with the display device 2, and by communicating with the display device 2, it is also possible to receive a signal including an audio control input received by the display device 2. In this case, the audio control unit 12 controls each audio device 7 according to the received audio control input. The communication between the audio control unit 12 and the display device 2 may be wired communication, may be wireless communication, and the communication standard is not particularly limited.

[0032] In this way, by controlling the lighting environment and the acoustic environment of each work space 4, it is possible to make the environment different for each work space 4, for example, and a so-called zoning effect can be expected.

[0033] Here, the zoning effect means, for example, a sense of separation in the perception of space, and may include an effect that makes it easier for the user U1 to recognize that a plurality of spaces are different spaces in appearance. Further, the zoning effect may include an effect that facilitates a change in the behavior or movement line of the user U1 as intended by the zoning, based on the perception by the user U1. For example, assume that zoning is performed for an arbitrary space with the intention of making it a space where the user U1 can easily perform work that requires concentration. In this case, it can be said that the zoning effect is exhibited if the user U1 who sees the space uses the space mainly for the purpose of performing work that requires concentration.

[0034] In addition, the zoning effect may include the subjective effects and sensations of user U1, or physiological, psychological, and biological effects that show a tendency in accordance with the main idea of zoning when user U1 actually uses the zoned space. For example, for any space, assume that zoning is carried out with the intention of creating a space where it is easy to perform tasks that require concentration, and user U1 uses this space. In this case, if user U1 obtains a feeling of being able to concentrate by using this space, or if indicators or data suggesting that user U1 was concentrating are obtained as psychological and biological effects, it can be said that the zoning effect has been exerted.

[0035] By controlling the lighting load 6 and the acoustic device 7 installed in the work space 4 as described above, it is possible to zone the work space 4 without using fixtures or furniture. Therefore, it is easy to enhance the design quality of the work space 4, and so-called active zoning, which instantaneously changes the layout of the office 3 by controlling the lighting load 6 and the acoustic device 7, becomes possible. As an example, the change in the control parameter of the color temperature (light color) of the light emitted by the lighting load 6 in the work space 4 is completed, for example, in a few seconds. In this case, as a result, it is possible to change the layout of the office 3 in a few seconds. Here, if the layout of the office 3 is changed by manually moving fixtures or furniture, it takes 60 minutes, several hours, or a day, and in some cases, several days. From this point of view, the zoning by controlling the lighting load 6 as described above can achieve extremely remarkable effects.

[0036] By active zoning, it is possible to change the layout of the office 3 in a short cycle such as every hour, every day, or every month, compared to changing the layout of the office by changing the arrangement of conventional fixtures or furniture.

[0037] In the embodiment, in each work space 4, the lighting control unit 11 controls the lighting load 6 such that the color temperature of the light emitted by the lighting load 6 is 5000 K or less and the illuminance of the work space 4 is 300 lx or more. The "color temperature" mentioned here is the correlated color temperature. Also, the "illuminance" mentioned here is, for example, the maximum illuminance of the lighting load 6. The maximum illuminance of the lighting load 6 is represented by, for example, the illuminance measured at the center of the work area 41 in the work space 4. The work area 41 is an area where the user U1 performs work. In the embodiment, the work area 41 is the upper surface of the desk 51. The measurement of the illuminance is performed by, for example, an illuminance sensor installed in the work space 4.

[0038] In the embodiment, in each work space 4, the acoustic control unit 12 controls the acoustic device 7 to reproduce natural environmental sounds in the work space 4. The acoustic control unit 12 controls the acoustic device 7 such that, in each work space 4, the natural environmental sounds are reproduced at a volume that can be perceived by the user U1 staying in the work space 4. The natural environmental sounds are preferably sounds that can be expected to have a zoning effect similar to the zoning effect that can be expected by the illumination light. This is because, by doing so, it becomes easier to exhibit an effect that is more than simply adding the zoning effect that can be expected by the illumination light and the zoning effect that can be expected by the sound, and it becomes easier to have an unexpected favorable synergistic effect.

[0039] The natural environmental sounds are sounds other than voices and music that are emitted by the daily environment in nature, such as the sound of wind, the sound of waves, the sound of thunder, the sounds emitted by animals, or the sounds emitted by insects. In the embodiment, the natural environmental sounds are preferably the chirping of birds or the sound of running water. The natural environmental sounds are sounds that tend to enhance the parasympathetic nerves of the user U1.

[0040] The storage unit 13 is a storage device that stores information (such as a computer program) necessary for each of the lighting control unit 11 and the acoustic control unit 12 to perform control. The storage unit 13 is realized by, for example, an HDD (Hard Disk Drive), but may also be realized by a semiconductor memory, and without particular limitation, known means for storing electronic information can be used. Well, known means for storing electronic information can be used without particular limitation.

[0041] The lighting control unit 11, the audio control unit 12, and the memory unit 13 may all be mounted on the same substrate or housed in the same housing. The substrate or the housing may be provided in furniture such as the ceiling, wall, floor, or desk of the office 3. In this case, it is preferable because the environmental control system 100 excluding the display device 2 is miniaturized.

[0042] The display device 2 has a display unit 21 that displays the control parameters of the lighting control unit 11 and the audio control unit 12. The display device 2 further has an input reception unit 22 that receives the setting input of the control parameters. In the embodiment, the display unit 21 and the input reception unit 22 are realized by a touch panel display. The control parameters of the lighting control unit 11 may include, for example, the illuminance of the work space 4, the color temperature of the light emitted by the lighting load 6, or the light distribution. The control parameters of the audio control unit 12 may include, for example, the content to be played or the volume of the audio device 7.

[0043] In the embodiment, the display device 2 is a dedicated controller for the environmental control system 100 and is installed in the office 3. In the embodiment, the display device 2 is configured to be operable by a person (hereinafter referred to as the "authorized person") who has the authority to execute the control by the environmental control system 100, such as the user U1 or the administrator of the environmental control system 100, after authentication.

[0044] Note that the display device 2 may be realized by an information terminal possessed by the authorized person. The information terminal may include, as an example, a smartphone, a tablet terminal, or a personal computer. In this case, the authorized person can install an application for executing the function as the display device 2 on the information terminal and start the application on the information terminal to use the information terminal as the display device 2.

[0045] FIG. 3 is a schematic diagram showing an example of the display device 2 of the environmental control system 100 according to the embodiment. In the example shown in FIG. 3, an image 211 representing the arrangement of each lighting load 6 and each audio device 7 in the office 3, an illuminance adjustment bar 212, and a volume adjustment bar 213 are displayed on the display unit 21. A plurality of workspaces 4 are virtually displayed in the image 211. An authorized person can perform an input to select any one of the workspaces 4 by touching the image 211 with a finger.

[0046] A knob 212a representing the current illuminance of the workspace 4 selected in the image 211 is displayed on the illuminance adjustment bar 212. An authorized person can perform an input to adjust the illuminance of the workspace 4 by touching the knob 212a of the illuminance adjustment bar 212 with a finger and sliding it up and down. This input is transmitted from the display device 2 to the lighting control unit 11 as a lighting control input.

[0047] A knob 213a representing the current volume of the audio device 7 in the workspace 4 selected in the image 211 is displayed on the volume adjustment bar 213. An authorized person can perform an input to adjust the volume of the audio device 7 in the workspace 4 by touching the knob 213a of the volume adjustment bar 213 with a finger and sliding it up and down. This input is transmitted from the display device 2 to the audio control unit 12 as an audio control input.

[0048] Here, although an authorized person can change the lighting environment and the audio environment of the workspace 4 using the display device 2, it is preferable that the range of change is limited. This is because if the lighting environment and the audio environment provided by the environmental control system 100 for the workspace 4 are changed beyond the allowable range, the effects expected to be exerted on the user U1 cannot be achieved.

[0049] Therefore, in the embodiment, the display unit 21 displays the range of control parameters that can be received by the input reception unit 22. In the example shown in FIG. 3, in the illuminance adjustment bar 212, a shaded adjustable area 212b is displayed as the range in which the illuminance as a control parameter can be adjusted. Also, in the example shown in FIG. 3, in the volume adjustment bar 213, a shaded adjustable area 213b is displayed as the range in which the volume as a control parameter can be adjusted. For this reason, since it is easy for the authorized person to visually grasp the range in which the environment of the work space 4 can be changed, there is an advantage that the environment of the work space 4 is less likely to be changed beyond the allowable range.

[0050] In the embodiment, even if the authorized person tries to slide the knob 212a outside the adjustable area 212b in the illuminance adjustment bar 212, the knob 212a cannot be slid outside the adjustable area 212b. The same applies to the volume adjustment bar 213. In this aspect, there is an advantage that it is possible to prevent the environment of the work space 4 from being changed beyond the allowable range.

[0051] [Verification] Here, the inventor of the present application conducted the following experiment to verify the effect of the lighting environment on the user U1. That is, a plurality (here, dozens) of subjects were gathered in the space to be experimented (here, a room in an office), and each subject was asked to perform a predetermined task (here, 1 minute of typing work on a personal computer) while changing the conditions of the space to be experimented. Then, for each subject, a questionnaire was conducted regarding the impression of the space to be experimented for each condition of the space to be experimented.

[0052] A plurality of desks are installed in the space to be experimented. And each subject performed typing work using a personal computer (here, a laptop-type personal computer) at one of the desks. Also, a plurality of base lights for uniformly illuminating the entire space to be experimented are installed on the ceiling of the space to be experimented. Further, a spotlight for locally illuminating the corresponding desk is installed on each desk.

[0053] In addition, an acoustic device is installed in the space of the experiment subject. And, unless otherwise specified, natural environmental sounds reproduced by the acoustic device are flowing in the space of the experiment subject under all conditions of the space of the experiment subject.

[0054] In the questionnaire for each subject, responses were obtained regarding the impression of the space of the experiment subject for each of the 10 items. Specifically, for each of the 10 items, responses were obtained from each subject as to which of the seven-level evaluations of (a) very good, (b) quite good, (c) slightly good, (d) neither, (e) slightly bad, (f) quite bad, (g) very bad the impression of the space of the experiment subject was.

[0055] Among the 10 items, the first item is whether the space of the experiment subject is easy to wake up in, the second item is whether the space of the experiment subject is easy to increase motivation, the third item is whether the space of the experiment subject is easy to change mood, and the fourth item is whether the space of the experiment subject is easy to calm down. Also, among the 10 items, the fifth item is whether the space of the experiment subject is natural, the sixth item is whether the space of the experiment subject is not easily fatigued, and the seventh item is whether the space of the experiment subject is open. Also, among the 10 items, the eighth item is whether the space of the experiment subject is easy to chat in, the ninth item is whether the space of the experiment subject is suitable for long-term work, and the tenth item is whether the characters on the display of the personal computer used for typing work are easy to see. The first to tenth items are all factors related to the mood of user U1 when working in work space 4.

[0056] And, the inventor of the present application quantitatively evaluated the conditions of the space of the experiment subject based on the results of the questionnaire for each subject. Specifically, for each of the 10 items, the seven-level evaluation obtained from the questionnaire was treated as an interval scale, and scalar values of "-3", "-2",..., "+3" were assigned to the evaluations of (g), (f),..., (a) respectively. And, based on this scalar value, a score was obtained for each condition of the space of the experiment subject.

[0057] For example, assume that as the score for the first item, the average value of the scalar values for the first item of each subject was obtained. In this case, if the score is the maximum value of "+3", it indicates that all subjects have the impression of "being very easy to wake up" with respect to the space under experiment. On the other hand, if the score is the minimum value of "-3", it indicates that all subjects have the impression of "being very easy to get sleepy" with respect to the space under experiment.

[0058] The results of the above experiment are enumerated below. FIG. 4 is a diagram showing the results of the first experiment. In FIG. 4, the vertical axis represents the score for the space under experiment, and the horizontal axis represents the conditions of the space under experiment. In the first experiment, the score is the total value of the scalar values for a total of two items, namely the first item and the second item. Therefore, in the first experiment, the maximum value of the score is "+6", and the minimum value of the score is "-6". Also, in the first experiment, the condition of the space under experiment is the acoustic environment of the space under experiment. Specifically, FIG. 4 shows the results of obtaining the scores when no sound is played in the space under experiment and when natural environmental sound (here, bird chirping) is played in the space under experiment. Note that in the first experiment, the color temperature (correlated color temperature) of the illumination light in the space under experiment is fixed at 5000K.

[0059] The whisker A1 shown in FIG. 4 represents the range of the standard deviation centered on the representative value (here, the average value) of the scores of all subjects. Also, the bar graph A2 shown in FIG. 4 represents the representative value (here, the average value) of the scores of all subjects. As shown in FIG. 4, when no sound is played in the space under experiment, the representative value of the score is "-0.5", while when natural environmental sound is played in the space under experiment, the representative value of the score is "+1.5". That is, in the latter case, the average value of the scalar values of each of the first item and the second item is "+0.75" or more. For this reason, when natural environmental sound is played in the space under experiment, each subject has the impression that the space under experiment is easy to wake up and easy to increase motivation.

[0060] As a result of the first experiment, the inventors of the present application have obtained the finding that by controlling the acoustic device 7 so that the acoustic control unit 12 reproduces natural environmental sounds in the work space 4, it is possible to expect the effect of improving the mood of the user U1 working in the work space 4.

[0061] FIG. 5 is a diagram showing the results of the second experiment. In FIG. 5, the vertical axis represents the score for the space under experiment, and the horizontal axis represents the conditions of the space under experiment. In the second experiment, the score is the total value of scalar values for a total of seven items from the third item to the ninth item. Therefore, in the second experiment, the maximum value of the score is “+21” and the minimum value of the score is “−21”. Also, in the second experiment, the condition of the space under experiment is the color temperature (correlated color temperature) of the illumination light in the space under experiment. That is, FIG. 5 shows the result of changing the color temperature of the illumination light in the space under experiment and obtaining the score for each color temperature.

[0062] The whisker B1 shown in FIG. 5 represents the range of the standard deviation centered on the representative value (here, the average value) of the scores of all the subjects. Also, the line segment B2 shown in FIG. 5 represents the representative value (here, the average value) of the scores of all the subjects. As shown in FIG. 5, when the color temperature of the illumination light in the space under experiment is 4000K, the representative value of the score is “+5”, and when it is 5000K, the representative value of the score is “+4”. On the other hand, when the color temperature of the illumination light in the space under experiment is 3000K, the representative value of the score is “+7”. That is, when the color temperature of the illumination light in the space under experiment is 3000K, the average value of each scalar value from the third item to the ninth item is “+1”. For this reason, when the color temperature of the illumination light in the space under experiment is 3000K, each subject has the impression that the space under experiment is easy to change the mood, easy to calm down, natural, not easily fatigued, open, easy to chat, and suitable for long-term work.

[0063] As a result of the second experiment, the inventors of the present application have obtained the finding that by controlling the lighting load 6 such that the color temperature of the light emitted by the lighting load 6 is 2700K or more and less than 3500K, the mood of the user U1 working in the work space 4 can be further improved.

[0064] FIG. 6 is a diagram showing the results of the third experiment. In FIG. 6, the vertical axis represents the score for the space under experiment, and the horizontal axis represents the conditions of the space under experiment. In the third experiment, the score is the scalar value for the 10th item of each subject. Therefore, in the third experiment, the maximum value of the score is “+3” and the minimum value of the score is “−3”. Also, in the third experiment, the condition of the space under experiment is the color temperature (correlated color temperature) of the illumination light in the space under experiment. That is, FIG. 6 shows the result of changing the color temperature of the illumination light in the space under experiment and obtaining the score for each color temperature. In FIG. 6, the numerical values on the horizontal axis are represented by the mired value which is the unit of the reciprocal color temperature. Also, in FIG. 6, when the scores of a plurality of subjects are the same, the score is represented by a single dot. That is, the number of dots for each mired value shown in FIG. 6 is not the same as the number of subjects.

[0065] The straight line C1 shown in FIG. 6 represents the correlation between the score and the mired value obtained approximately as a linear function based on the scalar value for the 10th item of each subject. As shown in FIG. 6, the score and the mired value have a negative correlation. In other words, FIG. 6 shows the result that the lower the color temperature, the more difficult it is to see the characters on the display of the personal computer used for the typing work. And as shown in FIG. 6, in the range where the mired value is about 360 or less (in other words, the range where the color temperature of the illumination light in the space under experiment is about 2700K or more), the score is “0” or more. Therefore, in the range where the color temperature of the illumination light in the space under experiment is 2700K or more, each subject has the impression that the characters on the display of the personal computer used for the typing work are easy to see.

[0066] As a result of the third experiment, the inventors of the present application have obtained the knowledge that by controlling the lighting load 6 so that the color temperature of the light emitted by the lighting load 6 is 2700K or higher, it is possible to expect the effect of improving the workability of the user U1 who works in the work space 4.

[0067] Figure 7 is a diagram showing the results of the fourth experiment. In Figure 7, the vertical axis represents the score for the space under experiment, and the horizontal axis represents the conditions of the space under experiment. In the fourth experiment, the score is the total value of the scalar values for a total of seven items from the third item to the ninth item. Therefore, in the fourth experiment, the maximum value of the score is "+21" and the minimum value of the score is "-21". Also, in the fourth experiment, the condition of the space under experiment is the type of lighting load in the space under experiment. Specifically, Figure 7 shows the results of obtaining the score when the lighting load is composed of only the base light and when the lighting load is composed of only the task light.

[0068] The whisker D1 shown in Figure 7 represents the range of the standard deviation centered on the representative value (here, the average value) of the scores of all the subjects. Also, the line segment D2 shown in Figure 7 represents the representative value (here, the average value) of the scores of all the subjects. As shown in Figure 7, when the lighting load is composed of only the base light, the representative value of the score is "+5". On the other hand, when the lighting load is composed of only the task light, the representative value of the score is less than "0". For this reason, when the lighting load is composed of only the base light, each subject has the impression that the space under experiment is easy to change the mood, easy to calm down, natural, not easy to get tired, open, easy to chat, and suitable for long-term work.

[0069] As a result of the fourth experiment, the inventors of the present application have obtained the knowledge that when the lighting load 6 has a diffused light distribution characteristic, it is possible to expect the effect of further improving the mood of the user U1 who works in the work space 4.

[0070] FIG. 8 is a diagram showing the results of the fifth experiment. In FIG. 8, the vertical axis represents the score for the space to be experimented, and the horizontal axis represents the conditions of the space to be experimented. In the fifth experiment, the score is a scalar value for the first item. Therefore, in the fifth experiment, the maximum value of the score is "+3" and the minimum value of the score is "-3". Also, in the fifth experiment, the condition of the space to be experimented is the type of lighting load in the space to be experimented. Specifically, FIG. 8 shows the results of obtaining scores when the lighting load is composed of only the base light and when the lighting load is composed of the base light and the task light. In the fifth experiment, the illuminance of the base light in the former case is 750 lx, the illuminance of the base light in the latter case is 500 lx, and the illuminance of the task light is 1500 lx. Also, in the fifth experiment, the color temperature (correlated color temperature) of the illumination light in the space to be experimented is fixed at 4000K.

[0071] The whisker E1 shown in FIG. 8 represents the range of the standard deviation centered on the representative value (here, the average value) of the scores of all the subjects. Also, the bar graph E2 shown in FIG. 8 represents the representative value (here, the average value) of the scores of all the subjects. As shown in FIG. 8, the representative value of the score is "0" when the lighting load is composed of only the base light. On the other hand, the representative value of the score is "1" when the lighting load is composed of the base light and the task light. For this reason, when the lighting load is composed of the base light and the task light, each subject has the impression that it is easier to wake up with respect to the space to be experimented.

[0072] From the results of the fifth experiment, the inventor of the present application has obtained the knowledge that when the lighting load 6 has a load having a diffused light distribution characteristic and a load having a condensing light distribution characteristic, the mood of the user U1 working in the work space 4 can be further improved.

[0073] [Operation] Next, an example of the operation of the environmental control system 100 according to the embodiment will be described. FIG. 9 is a flowchart showing an example of the operation of the environmental control system 100 according to the embodiment. Hereinafter, it will be described on the assumption that the lighting control unit 11 and the acoustic control unit 12 do not control the lighting load 6 and the acoustic device 7 installed in each work space 4 before receiving the lighting control input and the acoustic control input, respectively.

[0074] First, the lighting control unit 11 and the acoustic control unit 12 wait until they receive the lighting control input and the acoustic control input, respectively (S1: No). Then, when the lighting control input and the acoustic control input are received (S1: Yes), the lighting control unit 11 and the acoustic control unit 12 control the lighting load 6 and the acoustic device 7 installed in each work space 4 according to the received lighting control input and acoustic control input, respectively (S2). Process S2 and processes S4 and S5 described later correspond to the lighting control step ST1 of the environmental control method. Also, process S2 and processes S7 and S8 described later correspond to the acoustic control step ST2 of the environmental control method. Thereby, the lighting environment and the acoustic environment of each work space 4 are controlled based on the lighting control input and the acoustic control input.

[0075] The lighting control input is, for example, a lighting schedule from the working time to the end time on an arbitrary day. Also, the acoustic control input is, for example, an acoustic schedule from the working time to the end time on an arbitrary day. In this case, the lighting environment and the acoustic environment of each work space 4 are controlled according to the lighting schedule and the acoustic schedule, respectively.

[0076] Thereafter, when there is no change in the received lighting control input (S3: No), the lighting control unit 11 maintains the above control (S4). On the other hand, when there is a change in the received lighting control input (S3: Yes), the lighting control unit 11 controls to change the lighting environment of each work space 4 based on the changed lighting control input (S5). Thereby, the lighting environment of each work space 4 is updated.

[0077] Similarly, when there is no change in the received acoustic control input (S6: No), the acoustic control unit 12 maintains the above control (S7). On the other hand, when there is a change in the received acoustic control input (S6: Yes), the acoustic control unit 12 controls to change the acoustic environment of each work space 4 based on the changed acoustic control input (S8). Thereby, the acoustic environment of each work space 4 is updated.

[0078] A change in the lighting control input may occur, for example, when an authorized person adjusts the lighting environment of each work space 4 using the display device 2. A change in the acoustic control input may occur, for example, when an authorized person adjusts the acoustic environment of each work space 4 using the display device 2. Hereinafter, the above series of processes are repeated until the lighting schedule and the acoustic schedule are completed (S9: Yes).

[0079] [Advantages] Hereinafter, the advantages of the environmental control system 100 according to the embodiment will be described. First, the focus of the inventor of the present application will be described. In recent years, the work styles of users have been diversifying, and for example, ABW-type offices 3 and the like have emerged. As already described, "ABW" is a working style in which the user U1 selects a place or desk to work according to the work content. Specifically, "ABW" aims to improve the productivity of the user U1 by preparing a plurality of spaces or environments suitable for them according to the activity content of the user U1, such as solo work in which the user works alone intensively or group work in which multiple people exchange ideas. In recent years, for example, the improvement of refresh rooms and the like has also been increasingly emphasized in enhancing the added value of the office 3. Therefore, the inventor of the present application has studied a system that can improve the mood of the user U1 working in the office 3.

[0080] Based on the results of the above [verification], in the environmental control system 100 according to the embodiment, the lighting control unit 11 controls the lighting load 6 so that the color temperature of the light emitted by the lighting load 6 is 5000K or less and the illuminance of the work space 4 is 300 lx or more. Also, in the environmental control system 100 according to the embodiment, the acoustic control unit 12 controls the acoustic device 7 to reproduce natural environmental sounds in the work space 4. Thereby, the environmental control system 100 according to the embodiment has an advantage that it is easy to improve the mood of the user U1 working in the work space 4.

[0081] (Modification example) As described above, the embodiments have been explained, but the present invention is not limited to the above embodiments. Hereinafter, modification examples of the embodiments will be listed. The modification examples described below may be combined as appropriate.

[0082] In the embodiment, in each work space 4, the lighting control unit 11 and the acoustic control unit 12 may control the lighting load 6 and the acoustic device 7 during the day, may control the lighting load 6 and the acoustic device 7 at night, or may control the lighting load 6 and the acoustic device 7 both during the day and at night. Note that by controlling the lighting load 6 and the acoustic device 7 during the day as in the above embodiment, compared with the case of controlling only the lighting load 6 so that the color temperature (correlated color temperature) becomes relatively high in consideration of the circadian rhythm during the day, there is an advantage that it is easy to improve both workability and comfort.

[0083] In the embodiment, in each work space 4, it is preferable that the acoustic control unit 12 controls the acoustic device 7 so that the noise level of the work space 4 is 40 dB or more and less than 60 dB. For example, when the acoustic device 7 is controlled so that the noise level of the work space 4 is 60 dB or more, the user U1 may be concerned about the sound reproduced from the acoustic device 7 and it is highly likely to interfere with the work. On the other hand, in this aspect, there is an advantage that the sound reproduced from the acoustic device 7 is less likely to interfere with the work when the user U1 performs the work.

[0084] In an embodiment, when there are a plurality of workspaces 4, the lighting control unit 11 and the acoustic control unit 12 may control the lighting loads 6 and the acoustic devices 7 assigned to each of the plurality of workspaces 4 so as to make the environments of the plurality of workspaces 4 different from each other. Thereby, it is possible to make the environment different for each target space 4, and a different zoning effect can be expected for each target space 4.

[0085] Also, in the above case, in any one of the plurality of workspaces 4, the lighting control unit 11 may control the lighting load 6 so that the color temperature of the light emitted by the lighting load 6 is 4000 K or less, and the acoustic control unit 12 may control the acoustic device 7 to play music classified as jazz or bossa nova in the workspace 4.

[0086] Thereby, it is possible to provide a space where a further relaxation effect can be expected as compared with the case where only the illumination light from the lighting load 6 is provided to the workspace 4. Note that instead of the music classified as jazz or bossa nova, for example, other music in which the parasympathetic nerve of the user U1 is more likely to be dominant than the sympathetic nerve may be used.

[0087] Furthermore, in the above case, in any one of the plurality of workspaces 4, the lighting control unit 11 may control the lighting load 6 so that the illuminance at the center of the work area 41 in the workspace 4 is higher than the illuminance of the other parts, and the acoustic control unit 12 may control the acoustic device 7 to play white noise or natural environmental sounds in the workspace 4.

[0088] Thereby, it is possible to provide a space where an effect of further enhancing concentration can be expected as compared with the case where only the illumination light from the lighting load 6 is provided to the workspace 4.

[0089] In the embodiment, the environment control system 100 controls the lighting loads 6 and the acoustic devices 7 of each of the plurality of workspaces 4, but is not limited thereto. For example, the environment control system 100 may control only the lighting load 6 and the acoustic device 7 of one workspace 4.

[0090] In the embodiment, the environmental control system 100 targets one office 3, but is not limited thereto. For example, the environmental control system 100 may target a plurality of offices 3 and control the lighting load 6 and the sound device 7 of each work space 4 for each office 3.

[0091] In the embodiment, the environmental control system 100 may not include the display device 2. In this case, the environmental control system 100 may be set in advance at the start time of using the environmental control system 100 so as to execute, for example, the control of the lighting load 6 and the sound device 7.

[0092] In the embodiment, the lighting load 6 is not included in the components of the environmental control system 100, but the lighting load 6 may be included in the components of the environmental control system 100.

[0093] In the embodiment, the office 3 has a plurality of work spaces 4, but is not limited thereto. For example, the office 3 may have only one work space 4. That is, the entire office 3 may be the work space 4.

[0094] Also, for example, in the above embodiment, the environmental control system 100 is realized by a plurality of devices, but may be realized as a single device. For example, the environmental control system 100 may be realized as a single device corresponding to a server device. When the environmental control system 100 is realized by a plurality of devices, the components included in the environmental control system 100 may be distributed among the plurality of devices in any manner. For example, the components included in the server device in the above embodiment may be provided in an information terminal installed in a closed space. That is, the present invention may be realized by cloud computing or edge computing.

[0095] For example, the communication method between the devices in the above embodiment is not particularly limited. Also, in the communication between the devices, a relay device (not shown) may be interposed.

[0096] In addition, in the above-described embodiments, each component may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU or a processor reading out and executing a software program recorded on a recording medium such as a hard disk or a semiconductor memory.

[0097] Also, each component may be realized by hardware. For example, each component may be a circuit (or an integrated circuit). These circuits may constitute one circuit as a whole, or may be separate circuits respectively. Also, each of these circuits may be a general-purpose circuit or a dedicated circuit.

[0098] Furthermore, the general or specific aspects of the present invention may be realized by a system, an apparatus, a method, an integrated circuit, a computer program, or a recording medium such as a computer-readable CD-ROM. Also, it may be realized by an arbitrary combination of a system, an apparatus, a method, an integrated circuit, a computer program, and a recording medium.

[0099] For example, the present invention may be realized as a lighting control method executed by a computer such as the environmental control system 100, or may be realized as a program for causing a computer to execute such a lighting control method, or may be realized as a computer-readable non-transitory recording medium on which such a program is recorded.

[0100] In addition, forms obtained by applying various modifications conceivable by those skilled in the art to each embodiment, or forms realized by arbitrarily combining the components and functions in each embodiment without departing from the spirit of the present invention are also included in the present invention.

[0101] (Summary) As described above, the environmental control system 100 includes a lighting control unit 11 and an acoustic control unit 12. The lighting control unit 11 controls the illuminance and color temperature of the lighting load 6 provided in the work space 4. The acoustic control unit 12 controls the acoustic device 7 provided in the work space 4. The lighting control unit 11 controls the lighting load 6 so that the color temperature of the light emitted by the lighting load 6 is 5000K or less and the illuminance of the work space 4 is 300 lx or more. The acoustic control unit 12 controls the acoustic device 7 to reproduce natural environmental sounds in the work space 4.

[0102] According to such an environmental control system 100, there is an advantage that it is easy to improve the mood of the user U1 working in the work space 4.

[0103] Also, for example, in the environmental control system 100, the lighting control unit 11 controls the lighting load 6 so that the color temperature of the light emitted by the lighting load 6 is 2700K or more.

[0104] According to such an environmental control system 100, there is an advantage that it is easy to improve the work efficiency of the user U1 working in the work space 4.

[0105] Also, for example, in the environmental control system 100, the lighting control unit 11 controls the lighting load 6 so that the color temperature of the light emitted by the lighting load 6 is 2700K or more and less than 3500K.

[0106] According to such an environmental control system 100, there is an advantage that it is easy to further improve the mood of the user U1 working in the work space 4.

[0107] Also, for example, in the environmental control system 100, the lighting load 6 has a diffused light distribution characteristic.

[0108] According to such an environmental control system 100, there is an advantage that it is easy to further improve the mood of the user U1 working in the work space 4 as compared with the case where the lighting load 6 is composed only of loads having a condensing light distribution characteristic.

[0109] Further, for example, in the environmental control system 100, the lighting load 6 includes a load having a diffused light distribution characteristic and a load having a condensing light distribution characteristic.

[0110] According to such an environmental control system 100, there is an advantage that it is easier to further improve the mood of the user U1 working in the work space 4 as compared with the case where the lighting load 6 is composed only of loads having a diffused light distribution characteristic.

[0111] Further, for example, in the environmental control system 100, the lighting control unit 11 and the acoustic control unit 12 control the lighting load 6 and the acoustic device 7 during the day.

[0112] According to such an environmental control system 100, there is an advantage that it is easier to improve both workability and comfort as compared with the case where only the lighting load 6 is controlled so that the color temperature (correlated color temperature) becomes relatively high in consideration of the circadian rhythm during the day.

[0113] Further, for example, in the environmental control system 100, the acoustic control unit 12 controls the acoustic device 7 so that the noise level in the work space 4 is 40 dB or more and less than 60 dB.

[0114] According to such an environmental control system 100, there is an advantage that the sound reproduced from the acoustic device 7 is less likely to interfere with the work when the user U1 performs the work.

[0115] Further, for example, the environmental control system 100 further includes a display device 2 having a display unit 21 that displays the control parameters of the lighting control unit 11 and the acoustic control unit 12.

[0116] According to such an environmental control system 100, there is an advantage that it is easy for an authorized person to visually grasp the control content.

[0117] Also, for example, in the environmental control system 100, the display device 2 further has an input reception unit 22 that receives setting inputs of control parameters. The display unit 21 displays the range of control parameters that can be received by the input reception unit 22.

[0118] According to such an environmental control system 100, since it is easy for the authorized person to visually grasp the range in which the environment of the work space 4 can be changed, there is an advantage that the environment of the work space 4 is less likely to be changed beyond the allowable range.

[0119] Also, for example, in the environmental control system 100, there are a plurality of work spaces 4. The lighting control unit 11 and the acoustic control unit 12 control the lighting loads 6 and the acoustic devices 7 assigned to each of the plurality of work spaces 4 so that the environments of the plurality of work spaces 4 are different from each other.

[0120] According to such an environmental control system 100, by providing different environments for each work space 4, it becomes easier for the user U1 to select the desired environment, and there is an advantage that the convenience of the user U1 is likely to be improved.

[0121] Also, for example, in the environmental control system 100, in any one of the plurality of work spaces 4, the lighting control unit 11 controls the lighting load 6 so that the color temperature of the light emitted by the lighting load 6 is 4000K or less. The acoustic control unit 12 controls the acoustic device 7 to play music classified as jazz or bossa nova in the work space 4.

[0122] According to such an environmental control system 100, there is an advantage that a space where the user U1 can relatively easily relax can be provided.

[0123] Also, for example, in the environmental control system 100, in any one of the plurality of work spaces 4, the lighting control unit 11 controls the lighting load 6 so that the illuminance at the center of the work area 41 in the work space 4 is higher than the illuminance of the other parts. The acoustic control unit 12 controls the acoustic device 7 to play white noise or natural environmental sounds in the work space 4.

[0124] According to such an environmental control system 100, there is an advantage that a space where the user U1 is likely to concentrate can be provided.

[0125] Also, for example, the environmental control method includes a lighting control step ST1 and an acoustic control step ST2. In the lighting control step ST1, the illuminance and color temperature of the lighting load 6 provided in the work space 4 are controlled. In the acoustic control step ST2, the acoustic device 7 provided in the work space 4 is controlled. In the lighting control step ST1, the lighting load 6 is controlled so that the color temperature of the light emitted by the lighting load 6 is 5000 K or less and the illuminance of the work space 4 is 300 lx or more. In the acoustic control step ST2, the acoustic device 7 is controlled to reproduce natural environmental sounds in the work space 4.

[0126] According to such an environmental control method, there is an advantage that it is easy to improve the mood of the user U1 working in the work space 4.

[0127] Also, for example, the program causes one or more processors to execute the above environmental control method.

[0128] According to such a program, there is an advantage that it is easy to improve the mood of the user U1 working in the work space 4.

Explanation of Reference Numerals

[0129] 100 Environmental control system 11 Lighting control unit 12 Acoustic control unit 2 Display device 21 Display unit 22 Input reception unit 4 Work space 41 Work area 6 Lighting load 7 Acoustic device ST1 Lighting control step ST2 Acoustic control step U1 User

Claims

1. a lighting control unit that controls an illuminance and a color temperature of a lighting load assigned to each of the plurality of workspaces so as to make the lighting environments of the plurality of workspaces different from one another; an acoustic control unit that controls an acoustic device assigned to each of the plurality of work spaces so as to make the sound environments of the plurality of work spaces different from one another; the lighting load assigned to a first workspace among the plurality of workspaces has a diffuse light distribution characteristic; the lighting control unit controls the lighting loads assigned to the first working space so that a color temperature of light emitted by the lighting loads assigned to the first working space is 5000K or less and an illuminance of the working space is 300 lx or more; The audio control unit controls the audio device assigned to the first workspace so as to reproduce natural environmental sounds in the first workspace. Environmental control system.

2. The lighting control unit controls the lighting loads assigned to the first working space so that the color temperature of the light emitted by the lighting loads is 2700 K or higher. The environmental control system of claim 1 .

3. The lighting control unit controls the lighting loads assigned to the first working space so that a color temperature of light emitted by the lighting loads is equal to or higher than 2700 K and lower than 3500 K.

3. An environmental control system according to claim 1 or 2.

4. The lighting loads assigned to each of the plurality of work spaces include a load having a diffuse light distribution characteristic and a load having a concentrated light distribution characteristic. The environmental control system according to any one of claims 1 to 3.

5. The lighting control unit controls the lighting load assigned to the first work space during the day. The environmental control system according to any one of claims 1 to 4.

6. The acoustic control unit controls the acoustic device so that the noise level in the first working space is equal to or greater than 40 dB and less than 60 dB. The environmental control system according to any one of claims 1 to 5.

7. The display device further includes a display unit that displays control parameters of the lighting control unit and the sound control unit. The environmental control system according to any one of claims 1 to 6.

8. the display device further includes an input receiving unit that receives a setting input of the control parameter, the display unit displays a range of the control parameters that can be accepted by the input acceptance unit. The environmental control system of claim 7.

9. In a second working space different from the first working space among the plurality of working spaces, the lighting control unit controls the lighting loads assigned to the second working space so that a color temperature emitted by the lighting loads assigned to the second working space is 4000 K or less; The audio control unit controls the audio device assigned to the second workspace to play music classified as jazz or bossa nova in the second workspace. The environmental control system according to any one of claims 1 to 8.

10. In a third working space different from both the first working space and the second working space among the plurality of working spaces, the lighting control unit controls the lighting load allocated to the third working space so that an illuminance at a center of a working area in the third working space is higher than an illuminance at other portions; The audio control unit controls the audio device assigned to the third workspace so as to reproduce white noise or natural environmental sound in the third workspace.

10. The environmental control system of claim 9.

11. a lighting control step of controlling the illuminance and color temperature of a lighting load provided in each of the plurality of working spaces; an acoustic control step of controlling an acoustic device provided in each of the plurality of work spaces; the lighting load provided in a first working space among the plurality of working spaces has a diffuse light distribution characteristic; In the lighting control step, the lighting loads provided in the first working space are controlled so that a color temperature of light emitted by the lighting loads provided in the first working space is 5000K or less and an illuminance of the working space is 300 lx or more; In the sound control step, the sound device provided in the first work space is controlled so as to reproduce natural environmental sounds in the first work space. Environmental control methods.

12. One or more processors, Executing the environmental control method according to claim 11, program.

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