Method, Information Processing Apparatus, and Program

Abstract

To improve a technology for promoting a user to take power saving action.SOLUTION: A method performed by an information processor 10 calculates a comfort of a space A on the basis of first environment information in the space A in which an air-conditioning apparatus 20 is installed, estimates whether or not a change amount of the comfort of the space A becomes smaller than a reference value on the basis of the first environment information and second environment information at the outside of the space A when the air-conditioning apparatus 20 is stopped and a light shielding part 40 arranged at a window 30 of the space A is released during an operation of the air-conditioning apparatus 20, and outputs a first message for promoting the stop of the air-conditioning apparatus 20 and the release of the light shield part 40 when the change amount of the comfort of the space A is estimated to be smaller than the reference value, and a second message for suggesting a landscape which becomes visible from the space A by the release of the light shield part 40 via the window 30.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present disclosure relates to a method, an information processing apparatus, and a program.

Background Art

[0002] Conventionally, techniques for prompting users to perform power-saving actions are known. For example, in Patent Document 1, when the outside air temperature of a room reaches a value that is a comfortable environment for the occupants, a message prompting the occupants to open the window is output, and when it is detected that the window has been opened, the operation of the air conditioner in that room is stopped. An air conditioning system is disclosed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, simply outputting a message prompting a power-saving action does not necessarily provide sufficient motivation for the user to perform a power-saving action. Thus, there is room for improvement in the technology for prompting users to perform power-saving actions.

[0005] In view of such circumstances, an object of the present disclosure is to improve the technology for prompting users to perform power-saving actions.

Means for Solving the Problems

[0006] A method according to an embodiment of the present disclosure is a method executed by an information processing apparatus, calculating the comfort level of the space based on first environmental information in the space where the air conditioning equipment is installed, During the operation of the air conditioner, based on the first environmental information and the second environmental information outside the space, estimate whether the change amount of the comfort level of the space is less than a reference value when the air conditioner is stopped and the light-shielding part provided on the window of the space is opened, and when it is estimated that the change amount of the comfort level of the space is less than the reference value, output a first message prompting the stop of the air conditioner and the opening of the light-shielding part, and a second message suggesting a view visible from the space through the window due to the opening of the light-shielding part.

[0007] An information processing apparatus according to an embodiment of the present disclosure is an information processing apparatus including a control unit, and the control unit calculates the comfort level of the space based on the first environmental information in the space where the air conditioner is installed, during the operation of the air conditioner, based on the first environmental information and the second environmental information outside the space, estimates whether the change amount of the comfort level of the space is less than a reference value when the air conditioner is stopped and the light-shielding part provided on the window of the space is opened, and when it is estimated that the change amount of the comfort level of the space is less than the reference value, outputs a first message prompting the stop of the air conditioner and the opening of the light-shielding part, and a second message suggesting a view visible from the space through the window due to the opening of the light-shielding part.

[0008] A program according to an embodiment of the present disclosure causes a computer to calculate the comfort level of the space based on the first environmental information in the space where the air conditioner is installed, during the operation of the air conditioner, based on the first environmental information and the second environmental information outside the space, estimate whether the change amount of the comfort level of the space is less than a reference value when the air conditioner is stopped and the light-shielding part provided on the window of the space is opened, and when it is estimated that the change amount of the comfort level of the space is less than the reference value, output a first message prompting the stop of the air conditioner and the opening of the light-shielding part, and a second message suggesting a view visible from the space through the window due to the opening of the light-shielding part. When it is estimated that the amount of change in the comfort level of the space is less than the reference value, a first message for prompting the stop of the air conditioning equipment and the opening of the light shielding part, and a second message for suggesting a view that becomes visible from the space through the window due to the opening of the light shielding part are output.

Effect of the Invention

[0009] According to an embodiment of the present disclosure, the technology for prompting power-saving actions for users is improved.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Mode for Carrying Out the Invention

[0011] Hereinafter, embodiments of the present disclosure will be described.

[0012] (Overview of the Embodiment) With reference to FIG. 1, an overview of an information processing apparatus 10 according to an embodiment of the present disclosure will be described. The information processing apparatus 10 is a computer such as a PC (Personal Computer), a smartphone, a tablet terminal, a smart speaker, or a smart display. In the present embodiment, the information processing apparatus 10 is used in a space A such as a room where an air conditioning device 20, a window 30, and a light shielding part 40 are installed.

[0013] The air conditioner 20 may be, for example, an air conditioner, but is not limited thereto, and may be any device capable of adjusting the environment in the space A. The window 30 is provided, for example, on the wall surface defining the space A. The light-shielding portion 40 may be, for example, a curtain or a blind, but is not limited thereto, and may be any member having a light-shielding function or a light-reducing function. In the present embodiment, the light-shielding portion 40 is provided corresponding to the window 30, and will be described as being in a state of being closed so as to cover the window 30.

[0014] First, the outline of the present embodiment will be described, and the details will be described later. The information processing device 10 calculates the comfort level of the space A based on the first environmental information in the space A where the air conditioner 20 is installed. During the operation of the air conditioner 20, the information processing device 10 estimates whether the change amount of the comfort level of the space A becomes less than the reference value when the air conditioner 20 is stopped and the light-shielding portion 40 provided on the window 30 of the space A is opened, based on the first environmental information and the second environmental information outside the space A. Then, when it is estimated that the change amount of the comfort level of the space A becomes less than the reference value, the information processing device 10 outputs a first message prompting the stop of the air conditioner 20 and the opening of the light-shielding portion 40, and a second message suggesting the scenery visible from the space A through the window 30 due to the opening of the light-shielding portion 40.

[0015] Here, for example, consider a situation where the air conditioner 20 is performing a heating operation and the solar radiation intensity outside the space A is relatively high. Even if the heating operation of the air conditioner 20 is stopped in such a situation, by opening the light-shielding portion 40 and taking in sunlight from the window 30, the temperature change in the space A may be reduced, and as a result, the comfort level of the space A may not substantially change. From the perspective of power saving, in such a case, it is desirable to prompt the user to stop the air conditioner 20 and open the light-shielding portion 40. However, as described above, simply outputting a message prompting power-saving behavior may not necessarily provide sufficient motivation for the user to perform power-saving behavior.

[0016] In contrast, in this embodiment, in addition to the first message that prompts the power-saving action (i.e., the stop of the air-conditioning device 20 and the opening of the light-shielding part 40), a second message that suggests a view visible through the window 30 due to the opening of the light-shielding part 40 is output. Therefore, the user can be made interested in the view suggested by the second message and be motivated to perform the power-saving action shown in the first message. Thus, according to this embodiment, the technology for prompting the user to perform the power-saving action is improved in that it can motivate the user to perform the power-saving action.

[0017] (Configuration of the information processing device) Referring to FIG. 2, each component included in the information processing device 10 will be described in detail. The information processing device 10 includes a communication unit 11, an output unit 12, an input unit 13, a storage unit 14, and a control unit 15.

[0018] The communication unit 11 includes one or more communication interfaces for connecting to a network such as the Internet. The communication interface corresponds to, for example, a mobile communication standard such as 4G (4th Generation) or 5G (5th Generation), a wired LAN (Local Area Network) standard, or a wireless LAN standard, but is not limited thereto and may correspond to any communication standard. Further, the communication unit 11 may further include a communication interface for directly communicating with an external device such as the air-conditioning device 20. The communication interface corresponds to, for example, a short-range wireless communication standard such as infrared or Bluetooth (registered trademark), but is not limited thereto and may correspond to any communication standard.

[0019] The output unit 12 includes one or more output devices for outputting information. The output device is, for example, a display for outputting information as video, or a speaker for outputting information as sound, but is not limited thereto. Alternatively, the output unit 12 may include an interface for connecting to an external output device.

[0020] The input unit 13 includes one or more input devices that detect input operations by the user. The input device is, for example, a physical key, a capacitance key, a mouse, a touch panel, a touch screen provided integrally with the display of the output unit 12, or a microphone, etc., but is not limited thereto. Alternatively, the input unit 13 may include an interface for connecting an external input device.

[0021] The storage unit 14 includes one or more memories. The memory is, for example, a semiconductor memory, a magnetic memory, or an optical memory, etc., but is not limited thereto. Each memory included in the storage unit 14 may function as, for example, a main storage device, an auxiliary storage device, or a cache memory. The storage unit 14 stores any information used for the operation of the information processing apparatus 10. For example, the storage unit 14 may store a system program, an application program, etc.

[0022] The control unit 15 includes one or more processors, one or more programmable circuits, one or more dedicated circuits, or a combination thereof. The processor is, for example, a general-purpose processor such as a CPU (Central Processing Unit) or a GPU (Graphics Processing Unit), or a dedicated processor specialized for specific processing, but is not limited thereto. The programmable circuit is, for example, an FPGA (Field-Programmable Gate Array), but is not limited thereto. The dedicated circuit is, for example, an ASIC (Application Specific Integrated Circuit), but is not limited thereto. The control unit 15 controls the operation of the entire information processing apparatus 10.

[0023] (Operation of the information processing apparatus) With reference to FIG. 3, the operation of the information processing apparatus 10 will be described.

[0024] Step S100: The control unit 15 of the information processing apparatus 10 calculates the comfort level of the space A based on the first environmental information in the space A where the air conditioner 20 is installed.

[0025] The "first environmental information" includes, for example, information indicating at least one of the temperature and humidity in space A, but is not limited thereto and may include any information related to the environment in space A. The control unit 15 acquires the first environmental information from the air conditioner 20 via the communication unit 11, for example, but is not limited to this example and may acquire the first environmental information by any method.

[0026] The "comfort level" is information indicating the degree of comfort of space A that can be felt by the user. Generally, it is known that the comfort level depends on at least one of the temperature and humidity in the space. In one example, when the temperature in the space is 25 to 28 degrees and the humidity is 45 to 60%, the comfort level of the space is considered high, but the relationship between the comfort level, temperature, and humidity is not limited to this example.

[0027] Any method can be adopted to calculate the comfort level of space A. For example, the storage unit 14 may store in advance information defining scores for each of a plurality of numerical ranges of temperature and humidity. The relationship between each numerical range and the score is determined such that, for example, the score for a predetermined numerical range of temperature or humidity (e.g., 25 to 28 degrees or 45 to 60%) where the comfort level is considered high is the highest, and the score decreases as the distance from the predetermined numerical range increases, but is not limited to this example. The control unit 15 may refer to the information stored in the storage unit 14 to identify the numerical range (or humidity range to which the humidity belongs) to which the temperature or humidity indicated by the first environmental information in space A belongs, and the score of the numerical range. Then, the control unit 15 may calculate the total value of the identified scores as the comfort level.

[0028] Step S101: During the operation of the air conditioner 20, the control unit 15 estimates whether the change amount of the comfort level of space A becomes less than the reference value when the air conditioner 20 is stopped and the light-shielding unit 40 provided on the window 30 is opened, based on the first environmental information in space A and the second environmental information outside space A. If it is determined that the change amount of the comfort level becomes less than the reference value (Step S101 - Yes), the process proceeds to Step S102. On the other hand, if it is determined that the change amount of the comfort level does not become less than the reference value (Step S101 - No), the process ends.

[0029] The "second environmental information" includes, for example, information indicating the temperature, humidity, solar radiation intensity outside space A, or a combination thereof, but is not limited thereto and may include any information regarding the environment outside space A. The control unit 15 acquires the second environmental information from an external device such as a weather sensor or a weather data providing server managed by an organization such as the Japan Meteorological Agency via, for example, the communication unit 11, but is not limited to this example and may acquire the second environmental information by any method.

[0030] Any method can be adopted to estimate the amount of change in comfort. For example, the control unit 15 may estimate the amount of change in the comfort of space A when a predetermined time has elapsed after the stop of the air conditioner 20 and the opening of the light-shielding portion 40 provided in the window 30 by simulation using the first environmental information and the second environmental information.

[0031] Step S102: When it is determined in step S101 that the amount of change in comfort is less than the reference value (step S101-Yes), the control unit 15 identifies the scenery visible from space A through the window 30 by opening the light-shielding portion 40 based on the position of space A, the orientation of the window 30, and the map information.

[0032] Specifically, the storage unit 14 stores in advance the position of space A, the orientation of the window 30, and the map information. The control unit 15 identifies an object existing on a straight line extending from the position of space A in the direction of the window 30 (east in the example shown in FIG. 1) from the map information. Typically, a predetermined building (for example, a landmark, etc.) or a predetermined terrain (for example, a mountain or the sea, etc.) shown in the map information can be identified as the object, but the object is not limited to this example. For example, when there is no building or predetermined terrain on the straight line extending from the position of space A in the direction of the window 30, the horizon may be identified as the object.

[0033] When the object is specified, the control unit 15 estimates the visibility of the object based on the distance from the position in space A to the object. Specifically, the control unit 15 estimates that the visibility of the object is lower as the distance is longer. The degree of visibility may be indicated by a numerical value, for example, or may be indicated by a plurality of levels (such as three levels: high, medium, and low).

[0034] Alternatively, the control unit 15 may estimate the visibility of the object based on the distance from the position in space A to the object and the transparency of the atmosphere. Specifically, the above-described second environmental information further includes information indicating the transparency of the atmosphere. The control unit 15 estimates the visibility of the object based on the distance from the position in space A to the object and the transparency of the atmosphere. Specifically, the control unit 15 estimates that the visibility of the object is lower as the distance is longer and as the transparency of the atmosphere is lower.

[0035] When the visibility of the object is estimated, the control unit 15 specifies the estimated visibility and the information indicating the object as "a view that becomes visible from space A through the window 30 by opening the light-shielding part 40".

[0036] Step S103: The control unit 15 outputs the first message and the second message. Then, the process ends.

[0037] Specifically, the control unit 15 outputs a first message and a second message via the output unit 12. The "first message" is a message that prompts the stop of the air conditioner 20 and the opening of the light-shielding unit 40. Specifically, for example, a message such as "Please stop the air conditioner and open the curtains" can be adopted as the first message. The "second message" is a message that suggests the scenery identified in step S102. Specifically, for example, if the object identified in step S102 is "Mount Fuji" and the estimated visibility of the object is "high", a message such as "You can see Mount Fuji beautifully through the window when you open the curtains" can be adopted as the second message. In this way, by making the user interested in the scenery suggested by the second message, the user can be prompted to perform the power-saving actions shown in the first message (that is, the stop of the air conditioner 20 and the opening of the light-shielding unit 40). Note that a plurality of templates that can be candidates for the first message and the second message may be stored in advance in the storage unit 14, or the control unit 15 may generate a message by natural language processing.

[0038] As described above, the information processing apparatus 10 according to the present embodiment calculates the comfort level of the space A based on the first environmental information in the space A where the air conditioner 20 is installed. During the operation of the air conditioner 20, the information processing apparatus 10 estimates whether or not the change amount of the comfort level of the space A becomes less than a reference value when the air conditioner 20 is stopped and the light-shielding unit 40 provided on the window 30 of the space A is opened, based on the first environmental information and the second environmental information outside the space A. Then, when it is estimated that the change amount of the comfort level of the space A becomes less than the reference value, the information processing apparatus 10 outputs a first message that prompts the stop of the air conditioner 20 and the opening of the light-shielding unit 40, and a second message that suggests the scenery that becomes visible from the space A through the window 30 when the light-shielding unit 40 is opened.

[0039] According to such a configuration, the user can be made interested in the scenery suggested by the second message and be motivated to perform the power-saving actions shown in the first message. Therefore, according to the present embodiment, the technology for prompting the user to perform power-saving actions is improved in that the user can be motivated to perform power-saving actions.

[0040] Although the present disclosure has been described based on the drawings and examples, it should be noted that those skilled in the art may make various modifications and alterations based on the present disclosure. Therefore, it should be noted that these modifications and alterations are included in the scope of the present disclosure. For example, the functions and the like included in each component or each step, etc. can be rearranged so as not to be logically contradictory, and a plurality of components or steps, etc. can be combined into one or divided.

[0041] For example, in the above-described embodiment, an embodiment in which the configuration and operation of the information processing apparatus 10 are distributed to a plurality of computers capable of communicating with each other is also possible. Also, for example, an embodiment in which part or all of the operations executed by the information processing apparatus 10 are executed by the air conditioner 20 is also possible.

[0042] Also, in the above-described embodiment, a plurality of light-shielding portions 40 may be provided in the space A. In such a case, the control unit 15 of the information processing apparatus 10 identifies a plurality of landscapes that become visible by the opening of each of the plurality of light-shielding portions 40. The control unit 15 selects a light-shielding portion 40 that prompts opening from among the plurality of light-shielding portions 40 based on a comparison of the plurality of landscapes. Specifically, the control unit 15 may identify a landscape with the highest visibility of the object among the plurality of landscapes, and select a light-shielding portion 40 that needs to be opened to make the landscape visible. Then, the control unit 15 outputs a first message that prompts the stop of the air conditioner 20 and the opening of the selected light-shielding portion 40, together with a second message.

[0043] Further, in the above-described embodiment, an example where the power-saving action indicated in the first message is the stop of the air conditioner 20 and the opening of the light-shielding part 40 has been described. However, the power-saving action is not limited to this example, and for example, it may be the stop of the air conditioner 20, the opening of the light-shielding part 40, and the opening or closing of the window 30. In such a case, each of the first environmental information in the space A and the second environmental information outside the space A may further include at least one of the atmospheric aerosol concentration and the noise level. Further, when calculating the comfort level of the space A (corresponding to step S100 described above), the storage unit 14 may previously store information defining scores for each of a plurality of numerical ranges of temperature, humidity, atmospheric aerosol concentration, and noise level (hereinafter referred to as temperature, etc.). Then, the control unit 15 refers to the information stored in the storage unit 14, specifies the numerical range to which the temperature, etc. indicated in the first environmental information in the space A belongs and the score of the numerical range, and may calculate the total value of the specified scores as the comfort level. Further, when estimating whether or not the change amount of the comfort level of the space A is less than the reference value (corresponding to step S101 described above), the control unit 15 may estimate the change amount of the comfort level of the space A when a predetermined time has elapsed after the stop of the air conditioner 20, the opening of the light-shielding part 40, and the opening or closing of the window 30 are performed by simulation using the first environmental information and the second environmental information.

[0044] Also, for example, an embodiment in which a general-purpose computer functions as the information processing apparatus 10 according to the above-described embodiment is also possible. Specifically, a program describing the processing contents for realizing each function of the information processing apparatus 10 according to the above-described embodiment is stored in the memory of a general-purpose computer, and the program is read and executed by a processor. Therefore, the present disclosure can also be realized as a program executable by a processor or a non-temporary computer-readable medium storing the program.

[0045] Some embodiments of the present disclosure will be exemplified below. However, it should be noted that the embodiments of the present disclosure are not limited to these. [Appendix 1] A method executed by an information processing apparatus, Calculating the comfort level of the space based on the first environmental information in the space where the air conditioner is installed; During operation of the air conditioner, based on the first environmental information and the second environmental information outside the space, estimating whether the change amount of the comfort level of the space becomes less than a reference value when the air conditioner is stopped and the light-shielding part provided on the window of the space is opened; and When it is estimated that the change amount of the comfort level of the space is less than the reference value, outputting a first message prompting the stop of the air conditioner and the opening of the light-shielding part, and a second message suggesting a view visible from the space through the window due to the opening of the light-shielding part. A method comprising the above. [Appendix 2] The method according to Appendix 1, wherein the first environmental information includes information indicating at least one of the temperature and humidity in the space; the second environmental information includes information indicating the temperature, humidity, solar radiation intensity outside the space, or a combination thereof. [Appendix 3] The method according to Appendix 1 or 2, further comprising identifying the view based on the position of the space, the orientation of the window, map information, and the second environmental information. [Appendix 4] The method according to any one of Appendices 1 to 3, wherein the second environmental information includes information indicating the transparency of the atmosphere; the information processing device identifies an object existing on a straight line extending from the position of the space to the orientation of the window from the map information, and identifies information indicating the visibility of the object estimated based on the distance from the position of the space to the object and the transparency of the atmosphere, and the object, as the view. [Appendix 5] The method according to any one of Appendices 1 to 4, wherein When a plurality of windows and a plurality of light-shielding portions are provided in the space, the information processing apparatus identifies a plurality of landscapes that become visible when each of the plurality of light-shielding portions is opened, selects a light-shielding portion that promotes opening from among the plurality of light-shielding portions based on a comparison of the plurality of landscapes, and outputs the first message that promotes the opening of the selected light-shielding portion. [Appendix 6] An information processing apparatus including a control unit, wherein the control unit calculates the comfort level of the space based on first environmental information in the space where the air conditioning equipment is installed, during operation of the air conditioning equipment, estimates whether or not a change amount of the comfort level of the space becomes less than a reference value when the air conditioning equipment is stopped and a light-shielding portion provided in a window of the space is opened, based on the first environmental information and second environmental information outside the space, when it is estimated that the change amount of the comfort level of the space becomes less than the reference value, outputs a first message that promotes the stop of the air conditioning equipment and the opening of the light-shielding portion, and a second message that suggests a landscape visible from the space through the window due to the opening of the light-shielding portion. [Appendix 7] Causing a computer to calculate the comfort level of the space based on first environmental information in the space where the air conditioning equipment is installed, during operation of the air conditioning equipment, estimate whether or not a change amount of the comfort level of the space becomes less than a reference value when the air conditioning equipment is stopped and a light-shielding portion provided in a window of the space is opened, based on the first environmental information and second environmental information outside the space, and when it is estimated that the change amount of the comfort level of the space becomes less than the reference value, output a first message that promotes the stop of the air conditioning equipment and the opening of the light-shielding portion, and a second message that suggests a landscape visible from the space through the window due to the opening of the light-shielding portion to execute.

Explanation of Signs

[0046] A Space 10 Information Processing Apparatus 11 Communication unit 12 Output unit 13 Input unit 14 Memory unit 15 Control unit 20 Air conditioner 30 Window 40 Light-shielding part

Claims

1. A method executed by an information processing apparatus, comprising: calculating the comfort level of the space based on first environmental information in the space where the air conditioner is installed; during operation of the air conditioner, estimating whether a change amount of the comfort level of the space becomes less than a reference value when the air conditioner is stopped and a light-shielding portion provided on a window of the space is opened, based on the first environmental information and second environmental information outside the space; and when it is estimated that the change amount of the comfort level of the space becomes less than the reference value, outputting a first message prompting the stop of the air conditioner and the opening of the light-shielding portion, and a second message suggesting a scenery visible from the space through the window due to the opening of the light-shielding portion. A method including the above.

2. The method according to claim 1, wherein the first environmental information includes information indicating at least one of temperature and humidity in the space, and the second environmental information includes information indicating temperature, humidity, solar radiation intensity outside the space, or a combination thereof.

3. The method according to claim 1, further comprising identifying the scenery based on the position of the space, the orientation of the window, map information, and the second environmental information.

4. The method according to claim 3, wherein the second environmental information includes information indicating the transparency of the atmosphere, and the information processing apparatus identifies an object existing on a straight line extending from the position of the space to the orientation of the window from the map information, and identifies information indicating the visibility of the object estimated based on the distance from the position of the space to the object and the transparency of the atmosphere, and the object, as the scenery.

5. The method according to claim 3, wherein when a plurality of windows and a plurality of light-shielding portions are provided in the space, the information processing apparatus identifies a plurality of sceneries visible due to the opening of each of the plurality of light-shielding portions, selects a light-shielding portion to be prompted to open from among the plurality of light-shielding portions based on a comparison of the plurality of sceneries, and outputs the first message prompting the opening of the selected light-shielding portion.

6. An information processing apparatus including a control unit, wherein the control unit calculates the comfort level of the space based on first environmental information in the space where the air conditioner is installed, During the operation of the air conditioner, based on the first environmental information and the second environmental information outside the space, estimate whether the change amount of the comfort level of the space becomes less than a reference value when the air conditioner is stopped and the light-shielding part provided on the window of the space is opened. An information processing apparatus that outputs a first message prompting the stop of the air conditioner and the opening of the light-shielding part, and a second message suggesting a landscape visible from the space through the window due to the opening of the light-shielding part, when it is estimated that the change amount of the comfort level of the space becomes less than the reference value.

7. On a computer, Calculate the comfort level of the space based on the first environmental information in the space where the air conditioner is installed. During the operation of the air conditioner, based on the first environmental information and the second environmental information outside the space, estimate whether the change amount of the comfort level of the space becomes less than a reference value when the air conditioner is stopped and the light-shielding part provided on the window of the space is opened, and When it is estimated that the change amount of the comfort level of the space becomes less than the reference value, output a first message prompting the stop of the air conditioner and the opening of the light-shielding part, and a second message suggesting a landscape visible from the space through the window due to the opening of the light-shielding part. A program for causing the above to be executed.

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