Spectrum control system, spectrum control program, and spectrum control method

Abstract

To provide a spectrum control system, a spectrum control program, and a spectrum control method that can illuminate a space with illumination light suitable for a user.SOLUTION: A spectrum control system comprises: a storage unit that stores first information and second information related to the first information; an illumination device that can control the spectrum of light based on the first information; a terminal device that can acquire the second information; and a control unit that is communicably connected with the storage unit, illumination device, and terminal device. The control unit acquires the second information from the terminal device, acquires the first information related to the second information from the storage unit, and causes the illumination device to control the spectrum based on the first information.SELECTED DRAWING: Figure 1

Description

Cross-reference to related applications

[0001] This application claims priority to Japanese Patent Application No. 2019-239384 (filed December 27, 2019), the entire disclosure of which is incorporated herein by reference. [Technical Field]

[0002] The present disclosure relates to a spectrum control system, a spectrum control program, and a spectrum control method. [Background technology]

[0003] BACKGROUND ART A lighting control device is known that controls the dimming rate of a lighting fixture so that the brightness is set to a predetermined value (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2017-91776 Summary of the Invention

[0005] A spectrum control system according to an embodiment of the present disclosure includes a storage unit, a lighting device, a terminal device, and a control unit. The storage unit stores first information and second information related to the first information. The lighting device is capable of controlling the spectrum of light based on the first information. The terminal device is capable of acquiring the second information. The control unit is communicatively connected to the storage unit, the lighting device, and the terminal device. The control unit acquires the second information from the terminal device and acquires first information related to the second information from the storage unit. The control unit controls the spectrum of the lighting device based on the first information.

[0006] A spectrum control program according to an embodiment of the present disclosure causes a terminal device communicably connected to a lighting device that controls the spectrum of illumination light illuminating a target space based on first information to execute a step of acquiring second information about a user present in the target space. The spectrum control program causes the terminal device to execute a step of acquiring the first information based on the second information. The spectrum control program also causes the terminal device to execute a step of outputting the first information to the lighting device.

[0007] A spectrum control method according to one embodiment of the present disclosure includes steps of acquiring second information, acquiring first information related to the second information, and controlling the spectrum of light based on the first information. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a block diagram illustrating an example of the configuration of a lighting system according to an embodiment. [Figure 2] 10 is a table showing an example of spectrum data. [Figure 3] 10 is a table showing an example of spectrum data that changes sequentially over time. [Figure 4] 10 is a table showing an example of spectrum data that changes depending on the time period. [Figure 5] 1 is a flowchart illustrating an example of the steps of a spectrum control method executed by a lighting system. [Figure 6] 10 is a flowchart illustrating an example of the procedure of a spectrum control method executed by a terminal device. DETAILED DESCRIPTION OF THE INVENTION

[0009] It is necessary to illuminate the space in which a user is present with illumination light suitable for the user.

[0010] According to a spectrum control system, a spectrum control program, and a spectrum control method according to an embodiment of the present disclosure, a space can be illuminated with illumination light suitable for a user.

[0011] A lighting device can be considered that can control the spectrum of illumination light by selecting one spectrum from multiple spectra. If the lighting device stores data for multiple spectra in advance, the illumination light will be light having one of the stored spectra. In this case, if you try to increase the spectral options, the lighting device will need to store data for many types of spectra.

[0012] Although there are lighting devices that allow a user to freely set the spectrum of illumination light, in such cases, the spectrum may not always be set to a value suitable for the user.

[0013] The present disclosure describes a spectrum control system, a spectrum control program, and a spectrum control method that can illuminate a space where a user spends time with illumination light having a spectrum suitable for the user.

[0014] (System configuration example) As shown in FIG. 1, a spectrum control system 1 according to one embodiment includes a lighting device 10, a terminal device 20, a storage unit 32, and a control unit 40. The lighting device 10 emits illumination light that illuminates a target space 50 in which a user 2 is present. The lighting device 10 controls a spectrum that specifies the illumination light. The control unit 40 outputs information that controls the spectrum that specifies the illumination light to be emitted by the lighting device 10. The information representing the spectrum that specifies the illumination light is also referred to as first information. The storage unit 32 stores the first information. The control unit 40 acquires the first information from the storage unit 32 and outputs it to the lighting device 10.

[0015] The storage unit 32 may include, for example, an electromagnetic storage medium such as a magnetic disk, or may include a memory such as a semiconductor memory or a magnetic memory. The storage unit 32 can store various information and programs executed by each component of the spectrum control system 1. The storage unit 32 may function as a working memory for each component of the spectrum control system 1.

[0016] The spectrum control system 1 may further include a server 30. When the spectrum control system 1 further includes the server 30, the memory unit 32 is included in the server 30. The server 30 may include at least one processor. The processor included in the server 30 may be the same as or similar to the processor included in the control unit 40. The memory unit 32 may be located within at least one of the control unit 40, the server 30, the terminal device 20, and the lighting device 10. In other words, the memory unit 32 may be included in at least one of the control unit 40, the server 30, the terminal device 20, and the lighting device 10.

[0017] The control unit 40 may include at least one processor. The processor may execute programs that implement various functions of the lighting control unit 12. The processor may be implemented as a single integrated circuit. An integrated circuit is also called an IC (Integrated Circuit). The processor may be implemented as multiple integrated circuits and discrete circuits that are connected to each other in a communicative manner. The processor may also be implemented based on various other known technologies.

[0018] The terminal device 20 includes a terminal control unit 22 and an input unit 26. The terminal control unit 22 outputs control instructions to each component of the terminal device 20 and acquires various information from each component. The terminal control unit 22 may include at least one processor to provide control and processing capabilities for executing various functions. The processor included in the terminal control unit 22 may be the same as or similar to the processor included in the control unit 40. The terminal control unit 22 may implement at least some of the functions of the control unit 40. The terminal control unit 22 may include a terminal memory unit. The terminal memory unit of the terminal control unit 22 may be configured the same as or similar to the memory unit 32. The terminal memory unit stores various information, programs executed by the terminal control unit 22, etc. The terminal memory unit may function as a work memory for the terminal control unit 22. At least a portion of the terminal memory unit may be configured separately from the terminal control unit 22.

[0019] The input unit 26 may include an input device that accepts input from the user 2. The input device may include, for example, a touch panel, a keyboard, or a mouse. The input unit 26 may include a sensor or a camera that detects the state of the user 2 or the target space 50. In other words, the input unit 26 may acquire the state of the user 2 or the target space 50 via a sensor or the like. The sensor or the like may include, for example, a heart rate sensor that detects the heart rate of the user 2 as biometric information of the user 2. The sensor or the like may include, for example, a temperature sensor that detects the temperature of the target space 50 as environmental information of the target space 50. The input unit 26 is not limited to these examples and may include sensors that detect various parameters.

[0020] The terminal device 20 may be realized as part of the functions of a communication terminal such as a smartphone or a feature phone, or a mobile PC such as a tablet PC (Personal Computer) or a notebook PC.

[0021] The lighting device 10 includes an illumination control unit 12 and a plurality of light-emitting units 16. Each light-emitting unit 16 emits light having a predetermined spectrum. The predetermined spectrum may have one or more peak wavelengths in the wavelength range from 360 nm to 780 nm. Light having a peak wavelength in the wavelength range from 360 nm to 780 nm is also referred to as visible light. The wavelength range from 360 nm to 780 nm is also referred to as the visible light range. In other words, the light-emitting unit 16 may emit light having a spectrum having one or more peak wavelengths in the visible light range. The spectrum that specifies the light is measured using spectroscopy, for example, with a spectrophotometric device.

[0022] The light obtained by combining the light emitted by each light-emitting unit 16 is also referred to as composite light. The composite light is considered to be the illumination light emitted by the lighting device 10 as a whole. The spectrum of light emitted by at least one of the multiple light-emitting units 16 is different from the spectrum of light emitted by the other light-emitting units 16. The lighting control unit 12 can control the spectrum of the illumination light emitted by the lighting device 10 as a whole by controlling each of the multiple light-emitting units 16 that emit light of different spectrums.

[0023] The lighting control unit 12 may include at least one processor to provide control and processing power for performing various functions of the lighting device 10. The processor included in the lighting control unit 12 may be the same as or similar to the processor included in the control unit 40. The lighting control unit 12 may implement at least a portion of the functions of the control unit 40.

[0024] The lighting control unit 12 may include a lighting storage unit. The lighting storage unit may be configured in the same manner as or similar to the storage unit 32. The lighting storage unit stores various information and programs executed by the lighting control unit 12. The lighting storage unit may function as a work memory for the lighting control unit 12. At least a part of the lighting storage unit may be configured as a separate entity from the lighting control unit 12.

[0025] The light-emitting unit 16 may include, for example, a light-emitting element and a wavelength conversion member. The light-emitting element may emit light having a spectrum with a peak wavelength in the wavelength range from 360 nm to 430 nm, for example. Light having a spectrum with a peak wavelength in the wavelength range from 360 nm to 430 nm is also referred to as violet light. The wavelength range from 360 nm to 430 nm is also referred to as the violet light region. Visible light is considered to include violet light. The visible light region is considered to include the violet light region. The wavelength conversion member converts light incident on the wavelength conversion member from the light-emitting element into light having a spectrum with a peak wavelength in the visible light region and emits the converted light. It can also be said that the wavelength conversion member is excited by light emitted by the light-emitting element and emits light of a different wavelength. The light emitted by the light-emitting element is also referred to as excitation light. The excitation light is not limited to violet light and may be, for example, blue light having a spectrum with a peak wavelength in the wavelength range from 430 nm to 500 nm.

[0026] The wavelength conversion member may include a phosphor. The phosphor may convert the excitation light into light having a spectrum defined by a peak wavelength in the wavelength range of 400 nm to 500 nm, i.e., blue light. The phosphor may convert the excitation light into light having a spectrum defined by a peak wavelength in the wavelength range of 450 nm to 550 nm, i.e., blue-green light. The phosphor may convert the excitation light into light having a spectrum defined by a peak wavelength in the wavelength range of 500 nm to 600 nm, i.e., green light. The phosphor may convert the excitation light into light having a spectrum defined by a peak wavelength in the wavelength range of 600 nm to 700 nm, i.e., red light. The phosphor may convert the excitation light into light having a spectrum defined by a peak wavelength in the wavelength range of 680 nm to 800 nm, i.e., near-infrared light. The phosphor may convert the excitation light into light having a spectrum defined by a peak wavelength in the wavelength range of 680 nm to 800 nm, i.e., near-infrared light. The phosphor may convert the excitation light into light having a spectrum defined by a peak wavelength in the wavelength range of 680 nm to 800 nm, i.e., vermilion, yellow, or white light.

[0027] The wavelength conversion member may contain multiple types of phosphors. The types of phosphors are not limited to those described above and may include other types. The combination of types of phosphors contained in the wavelength conversion member is not particularly limited. The ratio of phosphors contained in the wavelength conversion member is not particularly limited. The wavelength conversion member converts excitation light into light specified by a spectrum determined based on the types and ratios of the contained phosphors. In this embodiment, the lighting device 10 includes light-emitting units 16 that emit light of each color: purple, blue, green, blue-green, vermilion, yellow, red, and white. The lighting device 10 controls the spectrum of the combined light by controlling the intensity of the light emitted by each light-emitting unit 16.

[0028] <Example of first information> As described above, the lighting device 10 is configured to be able to control the spectrum that specifies the illumination light based on first information. The first information may include information that specifies the intensity of the light emitted by each light-emitting unit 16. The light emitted by each light-emitting unit 16 corresponds to a respective color.

[0029] As shown in FIG. 2, the first information may be expressed as information specifying the intensity of light corresponding to each color. The intensity of light corresponding to each color is also referred to as the power of each color. Each row of the table corresponds to a type of lighting scene. The second row corresponds to a lighting scene represented by A. The third row corresponds to a lighting scene represented by B. Each column of the table corresponds to a type of color. Assuming that the number of colors that the lighting device 10 can emit is N, the types of colors are represented by symbols C_1 to C_N. For example, the second column corresponds to the color represented by C_1. N is a natural number greater than or equal to 2. When the number of colors (wavelength ranges) that the lighting device 10 can emit is N, the number of light-emitting units 16 is N or more. Each cell of the table represents the power of each color that constitutes a lighting scene. For example, of the colors that constitute lighting scene A, the power of the color represented by C_1 is represented by PA_1. Of the colors that constitute lighting scene B, the power of the color represented by C_N is represented by PB_N.

[0030] The control unit 40 outputs first information (for example, table information shown in FIG. 1) indicating the power of each color to the lighting device 10. The lighting control unit 12 of the lighting device 10 controls the light-emitting unit 16 based on the first information. As a result, the lighting device 10 can emit illumination light specified by a spectrum that matches the lighting scene specified by the control unit 40. The power of each color can also be controlled to 0.

[0031] As shown in the tables of FIGS. 3 and 4, the first information may include information associated with time.

[0032] In the table of FIG. 3 , the sixth column indicates the duration of control based on each lighting scene. The seventh column indicates the order in which control based on each lighting scene is executed. The order in which control is executed is also referred to as the control order. The lighting control unit 12 first starts control based on lighting scene B1, whose control order cell is blank (-), and continues it for 12 hours. Following the control based on lighting scene B1, the lighting control unit 12 starts control based on lighting scene A, whose control order cell is marked with B1, and continues it for 3 hours. Following the control based on lighting scene A, the lighting control unit 12 starts control based on lighting scene B2, whose control order cell is marked with A, and continues it for 5 hours. Following the control based on lighting scene B2, the lighting control unit 12 starts control based on lighting scene C, whose control order cell is marked with B2, and continues it for 4 hours. In this way, the lighting device 10 can change the illumination light over time. After the control based on lighting scene C is completed, the lighting control unit 12 may start control based on lighting scene B1 again. In this way, the illumination device 10 can periodically change the illumination light. The information included in the first information and indicating the control sequence is also referred to as a control pattern.

[0033] In the table of Fig. 3, the power of each color of lighting scene B1 is set to the same value as the power of each color of lighting scene B2. This allows a configuration in which a period of control based on the same lighting scene is included twice in one control pattern. The number of types of lighting scenes included in the first information can increase according to the number of times the lighting scene is changed in the control pattern.

[0034] The expression of the order of each lighting scene is not limited to the expression exemplified in Fig. 3. The order of each lighting scene may be expressed by, for example, a ranking.

[0035] In the table of FIG. 4 , the sixth column indicates the time period during which control based on each lighting scene is executed. The lighting control unit 12 executes control based on lighting scene A from 8:00 to 12:00. The lighting control unit 12 executes control based on lighting scene B from 12:00 to 16:00. The lighting control unit 12 executes control based on lighting scene C from 16:00 to 19:00. The lighting control unit 12 executes control based on lighting scene B from 19:00 to 23:00. In this manner, the lighting device 10 can change the illumination light over time. In the table of FIG. 4 , two time periods are associated as time periods during which control based on lighting scene B is executed. In this manner, the number of rows representing control based on lighting scene B is reduced to one row compared to FIG. 3 . As a result, the amount of data in the first information can be reduced.

[0036] The first information may represent a state in which no illumination light is emitted by including an illumination scene in which the power of all colors is zero.

[0037] In the example of Fig. 4, the lighting control unit 12 controls the light-emitting unit 16 so as not to emit illumination light during the period from 11:00 PM to 8:00 AM. In other words, the first information can indicate that illumination light is not emitted during a time period in which no lighting scene is set by including the time period in which no lighting scene is set. In this way, the first information can indicate that illumination light is not emitted without including a lighting scene in which the power of all colors is 0. As a result, the amount of data in the first information can be reduced.

[0038] (Spectrum control example) The terminal device 20 is configured to be able to acquire at least one of information related to the user 2 and information related to the target space 50. At least one of the information related to the user 2 and information related to the target space 50 is also referred to as second information. The terminal device 20 outputs the second information to the control unit 40. The control unit 40 acquires the second information from the terminal device 20. The control unit 40 acquires first information related to the second information from the storage unit 32. The storage unit 32 stores the first information and the second information in association with each other. The control unit 40 outputs the first information acquired from the storage unit 32 to the lighting device 10. The lighting device 10 controls the light-emitting unit 16 based on the first information to control the power of each color. By controlling the power of each color, the lighting device 10 can control the spectrum specifying the illumination light to a spectrum based on the information related to the user 2 or the information related to the target space 50, i.e., the second information. As a result, the lighting device 10 can emit illumination light suitable for the user 2 present in the target space 50.

[0039] <Contents of the second information> The second information may include information input by the user 2. The terminal device 20 may present a questionnaire to the user 2 and have the user 2 input answers via the input unit 26. The questionnaire may include questions about the lifestyle habits of the user 2, such as the amount of sleep the user 2 gets, the contents or timing of meals, or whether the user 2 drinks alcohol. The questionnaire may include questions about the area where the user 2 feels pain, or symptoms that the user 2 is aware of, such as the user 2's mood. More specifically, a plurality of items are displayed on the display unit of the terminal device 20, such as a mobile phone, and by selecting any item, the spectrum is controlled based on the first information that is optimal for the selected item (second information).

[0040] The second information may include biometric information of the user 2. The biometric information of the user 2 may include, for example, the heart rate, blood pressure, sweating state or blood flow, autonomic nerve index, activity level, immobility period, and hormone index such as stress of the user 2. The biometric information is not limited to these and may include various other information.

[0041] The second information may include environmental information of the target space 50 in which the user 2 is present. The environmental information of the target space 50 may include, for example, the temperature or humidity of the target space 50, the amount of sunlight incident from outside, or the carbon dioxide concentration. The environmental information may also include, for example, the hours of daylight. As a result, for example, in winter, the illuminance or blue light power may be increased in the morning. In summer, the illuminance or blue light power may be decreased in the evening. In this way, the illuminance or blue light power may be adjusted according to the hours of daylight. The environmental information is not limited to these and may include various other information.

[0042] The second information may include information for estimating the physical state of user 2. The control unit 40 may estimate the physical state of user 2 based on information input by user 2, biometric information of user 2, or environmental information of the target space 50. The physical state of user 2 may include a state in which user 2 suffers from a predetermined disease or shows symptoms of a predetermined disease. The predetermined disease may include various diseases such as sleep disorders, dementia, depression, or diabetes. The physical state of user 2 may include the obesity level of user 2. The physical state of user 2 may include a state in which user 2 feels tension, a state in which user 2 is concentrating, a state in which user 2 feels stressed, or the like. The physical state of user 2 may include a state in which user 2 feels drowsy, a state in which user 2's attention is distracted, a state in which user 2 is relaxed, or the like.

[0043] The second information may include information representing current or future behavioral information of user 2. The control unit 40 may identify the behavioral information of user 2 based on information input by user 2. The control unit 40 may estimate the behavioral information of user 2 based on information input by user 2, biometric information of user 2, or environmental information of the target space 50. The information representing the behavioral information of user 2 may include information representing whether user 2 is performing a simple task or information representing whether user 2 is performing a creative task. The information representing the behavioral information of user 2 may include information representing whether user 2 is performing a creative task or a task requiring concentration.

[0044] The second information may include information representing emotional information of the user 2. The control unit 40 may identify the emotional information of the user 2 based on information input by the user 2. The information representing the emotional information of the user 2 may include the cheerfulness of the user 2's mood or the color preference of the user 2 (warm colors, cool colors, etc.).

[0045] <Generation of first information> The control unit 40 acquires the first information based on the second information. The control unit 40 may acquire the first information associated with the second information from the storage unit 32. The control unit 40 may transmit the second information to the server 30 and acquire the first information generated in the server 30 based on the second information. In this case, the server 30 receives the second information from the control unit 40, generates the first information based on the second information, and transmits the first information to the control unit 40.

[0046] The storage unit 32 stores in advance a table that associates the first information with the second information. When the server 30 includes the storage unit 32, the server 30 may generate the first information based on the second information and the table.

[0047] <> The table pre-stored in the storage unit 32 may be prepared by an administrator of the spectrum control system 1. When the storage unit 32 is included in the server 30, the server 30 accepts registration of the first information by the administrator. The administrator associates the state of the user 2 with the spectrum so that the illumination light provides an effect according to the state of the user 2. The administrator can also be said to be the entity that provides the first information.

[0048] For example, the administrator may register the first information by associating second information corresponding to the case where user 2 has a predetermined disease with first information representing a spectrum that specifies illumination light that is effective in treating the predetermined disease. The administrator may register the first information only if there is evidence that proves a causal relationship between the treatment effect of the predetermined disease and the illumination. The evidence may be issued by a qualified person, such as a doctor. When the administrator registers the first information on the condition that there is evidence, it can be said that the first information has been authenticated in advance by the entity that provides it.

[0049] For example, the administrator may register the first information by associating second information corresponding to a case where user 2 is in a predetermined state with first information representing a spectrum that specifies illumination light that is effective for escaping the predetermined state. The predetermined state may include, for example, a state in which user 2 is feeling drowsy or the user 2's ability to concentrate is reduced. The administrator may register the first information only when there is evidence proving a causal relationship between the effect of escaping the predetermined state and the illumination.

[0050] The administrator may register the first information by, for example, associating second information corresponding to a case where user 2 needs to enter a predetermined state with first information representing a spectrum that specifies lighting light effective for entering the predetermined state. The predetermined state may include, for example, a state in which user 2 can concentrate. The predetermined state may also include a so-called flow state in which user 2 is relaxed yet maintains high concentration. The administrator may register the first information only if there is evidence proving a causal relationship between the effect of entering the predetermined state and lighting.

[0051] As described above, the spectrum control system 1 and the terminal device 20 according to this embodiment can illuminate the target space 50 in which the user 2 is present with illumination light suitable for the user 2.

[0052] (flowchart) The spectrum control system 1 may execute a spectrum control method including the steps of the flowchart illustrated in Figure 5. The spectrum control method may be implemented as a spectrum control program executed by a processor. In this example, the storage unit 32 is included in the server 30.

[0053] The control unit 40 acquires the second information (step S1). The control unit 40 may acquire the second information from the terminal device 20. The terminal device 20 may accept input of the second information from the user 2 via the input unit 26. If the input unit 26 includes a sensor, the terminal device 20 may acquire information about the user 2 detected by the sensor as the second information. The terminal device 20 outputs the acquired second information to the control unit 40.

[0054] The server 30 accepts registration of the first information (step S11). The server 30 registers the first information by associating the first information with the second information and storing the information in the storage unit 32. For example, the server 30 may associate the first information representing a spectrum suitable for the physical condition of the user 2 with second information corresponding to the physical condition of the user 2 and store the information in the storage unit 32. For example, the server 30 may associate the first information representing a spectrum suitable for the environment of the target space 50 with second information corresponding to environmental information of the target space 50 and store the information in the storage unit 32.

[0055] The control unit 40 transmits the second information to the server 30 (step S2). The server 30 receives the second information (step S12).

[0056] The server 30 acquires the first information based on the second information (step S13). The server 30 may extract the first information associated with the acquired second information from the first information registered by being stored in advance in the storage unit 32.

[0057] The server 30 transmits the first information to the control unit 40 (step S14). After the procedure of step S14, the server 30 ends the execution of the flowchart in Fig. 5. The control unit 40 receives the first information (step S3).

[0058] The control unit 40 outputs the first information to the lighting device 10 (step S15). After the procedure of step S4, the control unit 40 ends the execution of the flowchart of FIG.

[0059] The control unit 40 may execute a spectrum control method including the steps of the flowchart illustrated in Fig. 6. The spectrum control method may be implemented as a spectrum control program executed by a processor. In this example, the storage unit 32 may be included in at least one of the control unit 40, the server 30, the terminal device 20, and the lighting device 10.

[0060] The control unit 40 accepts registration of the first information (step S21). The control unit 40 may register the first information in the storage unit 32 by executing a procedure that is the same as or similar to the procedure of step S11 in FIG. 5 that is executed by the server 30.

[0061] The control unit 40 acquires the second information (step S22). The control unit 40 may execute a procedure that is the same as or similar to the procedure of step S1 in FIG.

[0062] The control unit 40 acquires the first information based on the second information (step S23). The control unit 40 may acquire the first information by executing a procedure that is the same as or similar to the procedure of step S13 in FIG. 5 that is executed by the server 30.

[0063] The control unit 40 outputs the first information to the lighting device 10 (step S24). After the procedure of step S24, the control unit 40 ends the execution of the flowchart in FIG.

[0064] As described above, according to the spectrum control method of this embodiment, the target space 50 in which the user 2 exists can be illuminated with illumination light suitable for the user 2.

[0065] <Illuminance> The lighting device 10 may be configured to be able to control illuminance as a parameter of the illumination light. The lighting device 10 may also control the illuminance of visible light included in the illumination light. The lighting device 10 may also control the spectrum to keep the illuminance constant. By controlling the spectrum using the illuminance as a parameter, the lighting device 10 can reduce the discomfort felt by the user 2.

[0066] <Color temperature> The lighting device 10 may be configured to control the color temperature as a parameter of the illumination light. Color temperature is a parameter associated with the temperature of a black body. The color temperature of the spectrum of light emitted by a black body having a temperature represented by T is represented as T. For example, the color temperature of the spectrum of light emitted by a black body of 5000 K (Kelvin) is represented as 5000 K. The color of light having a color temperature of approximately 4000 K to 5000 K is also called white. The lower the color temperature is compared to white light, the more red the color of the light may contain. In other words, light with a low color temperature appears reddish. The higher the color temperature is compared to white light, the more blue the color of the light may contain. In other words, light with a high color temperature appears bluish.

[0067] Not only the spectrum of light emitted by a black body, but also a spectrum that approximates the spectrum of light emitted by a black body may be expressed by color temperature. When a given spectrum approximates the spectrum of light emitted by a black body having a temperature represented by T, the color temperature of the given spectrum is represented by T. Whether two light spectra are approximate to each other may be determined based on various conditions. For example, a condition for two light spectra to be approximate to each other may include that, when the relative intensities of each wavelength in the two light spectra are compared, the difference in each wavelength is within a predetermined range. For example, a condition for two light spectra to be approximate to each other may include that the difference in peak wavelengths contained in the two light spectra is within a predetermined range. The condition for two light spectra to be approximate to each other is not limited to these examples and may include various other conditions.

[0068] For example, the spectrum of sunlight around noon can be approximated to the spectrum of light emitted by a blackbody of approximately 5000 K. In this case, the color temperature of sunlight around noon is expressed as approximately 5000 K. The color of light expressed at a color temperature of approximately 5000 K is also called daylight. The color of light expressed at a color temperature of approximately 6500 K, which is higher than the color temperature of daylight, is also called daylight. Daylight contains more blue light components or components with shorter wavelengths than blue light than daylight, and appears bluish. Conversely, daylight appears closer to white than daylight.

[0069] The lighting device 10 may control the spectrum to increase the color temperature of the illumination light. The lighting device 10 may control the spectrum to decrease the color temperature of the illumination light. By controlling the spectrum based on the color temperature of the illumination light, the lighting device 10 can guide the user 2 into a predetermined state or cause the user 2 to escape from the predetermined state.

[0070] Illumination device 10 may control the spectrum of illumination light so as to maintain a constant color temperature as a parameter of illumination light, thereby making it less likely that user 2 will feel uncomfortable.

[0071] <Other embodiments> In another embodiment of the spectrum control system 1 according to the present invention, the storage unit 32 may store biometric information of the user 2 and the first information of the lighting device 10 in association with each other. That is, the usage history of the first information of the lighting device 10 may be stored in association with the biometric information at the time of use of the first information (spectrum). The usage history of the first information may include not only the spectral information of the multiple light-emitting units 16 but also the usage time of a specific spectrum. As a result, for example, if the spectrum control system 1 further includes AI, the usage history of the first information and the biometric information may be used as learning data for the AI ​​to learn, thereby enabling the lighting device 10 to be controlled based on more optimal first information.

[0072] In another embodiment of the spectrum control system 1, the storage unit 32 may store environmental information about the target space 50 and the first information about the lighting device 10 in association with each other. That is, the usage history of the first information about the lighting device 10 may be stored in association with environmental information about the time when the first information (spectrum) was used. The usage history of the first information may include not only spectral information about the multiple light-emitting units 16 but also the usage time of a specific spectrum. As a result, for example, if the spectrum control system 1 further includes AI, the AI ​​may learn using the usage history of the first information and the environmental information as learning data, thereby controlling the lighting device 10 based on more optimal first information. The spectrum control system 1 may also have the AI ​​learn the usage history, biological information, and environmental information about the first information.

[0073] The drawings illustrating the embodiments of the present disclosure are schematic, and the dimensional ratios and the like in the drawings do not necessarily correspond to the actual ones.

[0074] Although the embodiments of the present disclosure have been described based on the drawings and examples, it should be noted that those skilled in the art would easily be able to make various modifications or alterations based on the present disclosure. Therefore, it should be noted that these modifications and alterations are included within the scope of the present disclosure. For example, the functions included in each component may be rearranged so as not to cause logical inconsistencies, and multiple components may be combined or divided into one.

[0075] In the embodiment according to the present disclosure, the control unit 40, the lighting control unit 12, and the terminal control unit 22 are described as being separate components, but for example, the control unit 40 may be arranged in the lighting device 10 and further function as the lighting control unit 12. Furthermore, the control unit 40 may be arranged in the terminal device 20 and further function as the terminal control unit 22.

[0076] In the embodiment according to the present disclosure, an example has been described in which the control order or duration is specified as a fixed value as the first information, but the control order or duration of the first information may be a variable value that changes depending on the season, for example. In this case, for example, the duration of daylight or the like may be acquired as the second information, and the control unit 40 may control the duration of each spectrum in conjunction with the length of daylight hours so that the human circadian rhythm approaches a constant.

[0077] Furthermore, in the embodiment according to the present disclosure, for example, the storage unit 32 or the terminal device 20 may be connected to an external server or the like to acquire external information such as a weather forecast.

[0078] In this disclosure, descriptions such as "first" and "second" are identifiers for distinguishing the configuration. In this disclosure, the configurations distinguished by descriptions such as "first" and "second" can have their numbers exchanged. For example, the first information can exchange the identifiers "first" and "second" with the second information. The exchange of identifiers is performed simultaneously. The configurations remain distinguished even after the exchange of identifiers. Identifiers may be deleted. A configuration from which an identifier has been deleted is distinguished by a symbol. The descriptions of identifiers such as "first" and "second" in this disclosure should not be used solely to interpret the order of the configurations or to justify the existence of an identifier with a smaller number. [Explanation of symbols]

[0079] 1 Spectrum Control System 2 users 10 lighting device (12: lighting control unit, 16: light emitting unit) 20 terminal device (22: terminal control unit, 26: input unit) 30 servers 32 Storage section 40 Control Unit 50 Target Space

Claims

1. a storage unit that stores first information and second information related to the first information; a lighting device capable of controlling a spectrum of illumination light that illuminates a target space based on the first information; a terminal device capable of acquiring the second information; a control unit communicably connected to the storage unit, the lighting device, and the terminal device; Equipped with the control unit acquires from the terminal device as the second information information representing the state of a user present in a target space, the information including answers to questions regarding symptoms perceived by the user present in the target space; and each time the control unit acquires the second information, it acquires from the storage unit the first information as information related to the second information, and causes the lighting device to control the spectrum of the illumination light based on the first information.

2. The spectrum control system of claim 1, wherein the information representing the state of a user present in the target space includes physical information or emotional information of the user present in the target space, or information representing the characteristics of the work being performed by the user in the target space.

3. A memory unit that stores first information and second information related to the first information; a lighting device capable of controlling a spectrum of illumination light that illuminates a target space based on the first information; a terminal device capable of acquiring the second information; a control unit communicably connected to the storage unit, the lighting device, and the terminal device; Equipped with the control unit acquires, as the second information from the terminal device, information representing the state of a user present in a target space, the information including answers to questions about symptoms felt by the user present in the target space and corresponding to a predetermined state different from the current state of the user present in the target space; acquires, as the first information, information related to the second information from the storage unit, information representing a spectrum that specifies illumination light that is effective in bringing the user present in the target space into the predetermined state; and causes the lighting device to control the spectrum of the illumination light based on the first information.

4. The spectrum control system of claim 1 , wherein the first information includes information that has been pre-authenticated by an entity that provides the first information.

5. The spectrum control system according to claim 1 , wherein the first information includes information associating the spectrum of the illumination light with time.

6. The spectrum control system of claim 1 , wherein the second information includes environmental information of the target space.

7. The spectral control system of claim 1 , wherein the lighting device is further capable of controlling the illuminance of the illumination light.

8. 8. The spectral control system of claim 1, wherein the lighting device is further capable of controlling a color temperature of the illumination light.

9. 9. The spectrum control system according to claim 1, wherein the lighting device is capable of controlling the spectrum of the illumination light while keeping the color temperature of the illumination light constant.

10. 10. The spectral control system of claim 1, wherein the memory unit is located within the lighting device.

11. The spectrum control system of claim 1 , wherein the storage unit is located within the terminal device.

12. a server communicably connected to the lighting device and the terminal device; The spectrum control system of claim 1 , wherein the storage unit is located within the server.

13. The spectrum control system according to claim 1 , wherein the control unit has an AI that has been trained using the usage history of the first information and biological information or environmental information as learning data.

14. a terminal device communicably connected to a lighting device that controls a spectrum of illumination light that illuminates a target space based on first information; acquiring information representing a state of the user present in the target space as second information regarding the user present in the target space, the information including answers to questions regarding symptoms perceived by the user present in the target space; acquiring the first information based on the second information each time the second information is acquired; outputting the acquired first information to the lighting device every time the second information is acquired; A spectrum control program that executes the above.

15. A terminal device communicably connected to a lighting device that controls the spectrum of illumination light that illuminates a target space based on first information, acquiring, as second information regarding the user present in the target space, information representing a state of the user present in the target space, including answers to questions regarding symptoms perceived by the user present in the target space, and information corresponding to a predetermined state different from the current state of the user present in the target space; acquiring, as the first information, information related to the second information and representing a spectrum that specifies illumination light effective for causing a user present in the target space to enter the predetermined state; outputting the first information to the lighting device; A spectrum control program that executes the above.

Images