In-building illumination facility

Abstract

To provide an in-building illumination facility capable of properly adjusting illumination at a moving destination in consideration of a moving route and a time zone or the like of a user when the user moves in a building.SOLUTION: An in-building illumination facility 10 includes, in a housing H1 having a first space (space R1) and a second space (space R2), a plurality of illumination devices 11A and 11B provided at different heights from each other in the second space, signal output devices 12A and 12B that detect a user U who has moved from the first space to the second space and output a signal, and a control device 13 that controls the plurality of illumination devices 11A and 11B based on the signal and a current time zone.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an interior lighting facility for a building, and more particularly to an interior lighting facility for a building that includes a lighting device for illuminating the interior of the building. [Background technology]

[0002] Techniques using lighting devices have already been developed, and the technique described in Patent Document 1 is one example.

[0003] The lighting control device described in Patent Document 1 includes a color temperature determination means for determining the color temperature of light emitted by a lighting device, a date and time acquisition means for acquiring date and time information indicating the current date and time, and an installation location information acquisition means for acquiring installation location information indicating the installation location of the lighting device. The color temperature determination means determines the color temperature based on the current date and time and the installation location of the lighting device. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2023-126279 Summary of the Invention [Problem to be solved by the invention]

[0005] The technology described in Patent Document 1 determines the color temperature of a lighting device at the installation location, taking into consideration the current date and time and the installation location of the lighting device. On the other hand, when a user moves within a building, there are cases where it is required to adjust the lighting at the destination, taking into consideration the user's movement route.

[0006] Therefore, the present invention has been made in consideration of the above-mentioned problems, and its purpose is to provide an in-building lighting facility that can appropriately adjust the lighting at a destination when a user moves within a building, taking into account the user's route of movement, time of day, etc. [Means for solving the problem]

[0007] The above-mentioned object is achieved by the in-building lighting equipment of the present invention, which is provided in a building having a first space and a second space, by having a plurality of lighting devices installed at different heights in the second space, a signal output device that detects a user who moves from the first space to the second space and outputs a signal, and a control device that controls the plurality of lighting devices based on the signal and the current time of day.

[0008] The in-building lighting equipment of the present invention can grasp the movement of the user from the first space to the second space, i.e., the user's movement route (user behavior), based on the signal output by the signal output device. As a result, when the user moves within the building, the in-building lighting equipment can appropriately adjust the lighting at the user's destination, taking into account the user's movement route, time of day, etc.

[0009] The control device may also control the plurality of lighting devices based on the first space in which the user who has moved to the second space was located immediately before, traffic lights, and the current time of day. With the above configuration, the illumination at the destination can be appropriately adjusted in consideration of the illumination at the source.

[0010] The control device may also control the plurality of lighting devices so as to gradually change the light irradiation conditions according to the time that has elapsed since the user entered the second space. With the above configuration, it is possible to more appropriately adjust the lighting at the user's destination.

[0011] In addition, in a lighting facility within a building, a first light irradiation condition of a plurality of lighting devices provided in a predetermined space when moving from one room to the predetermined space may be different from a second light irradiation condition of a plurality of lighting devices provided in the predetermined space when moving from the predetermined space to another room and then from the other room to the predetermined space. With the above configuration, even if the destination is the same, it is possible to more appropriately adjust the illumination of the destination depending on the source.

[0012] Furthermore, under the second light irradiation condition, the illuminance of the location irradiated with light from the lighting device may be lower than under the first light irradiation condition. With the above configuration, even if the destination is the same, the illuminance is lowered at a later time, so that the user can be smoothly guided into a sleep state, for example, before and during sleep.

[0013] The control device may also control at least one of the illuminance of a location irradiated with light from the lighting device and the color temperature of the light irradiated by the lighting device. With the above configuration, it is possible to more appropriately adjust the lighting at the user's destination.

[0014] In addition, when multiple users use the building, the control device may control multiple lighting devices based on the relationship between a set period set by one of the multiple users who satisfies certain conditions and the current time zone. With the above configuration, it is possible to appropriately adjust the lighting at the user's destination in consideration of the user satisfying a predetermined condition.

[0015] In addition, when the second space is a non-occupied room, the control device may control the multiple lighting devices so that during a set period, only the lowest lighting device among the multiple lighting devices emits light, and during a specified time other than the set period, all of the multiple lighting devices are turned on. With the above configuration, it is possible to more appropriately adjust the lighting at the destination of the user, taking into consideration the user who satisfies a predetermined condition. [Effects of the Invention]

[0016] According to the present invention, it is possible to provide an in-building lighting facility that can appropriately adjust the lighting at a destination when a user moves within a building, taking into account the user's route of movement, time of day, etc. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a diagram showing an example of a house in which an indoor lighting system according to an embodiment of the present invention is installed (part 1). [Figure 2] FIG. 1 is a diagram illustrating a configuration of a control device according to an embodiment of the present invention. [Figure 3] FIG. 2 is an explanatory diagram of the function of a control device according to an embodiment of the present invention. [Figure 4] FIG. 10 is a diagram showing a table showing the relationship between the current time period, the first space, the second space, and the light irradiation conditions of the lighting device. [Figure 5] FIG. 1 is a diagram showing a procedure of a lighting control flow according to an embodiment of the present invention. [Figure 6] FIG. 2 is a diagram showing an example of a house in which an indoor lighting system according to an embodiment of the present invention is installed (part 2). [Figure 7] FIG. 10 is an explanatory diagram illustrating an example in which a lighting control flow is applied in the time period "before going to bed." [Figure 8] FIG. 10 is an explanatory diagram illustrating an example in which a lighting control flow is applied during a "sleeping" time period. [Figure 9] FIG. 10 is an explanatory diagram illustrating an example in which a lighting control flow is applied in a "wake-up" time period. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, one embodiment of the present invention (hereinafter referred to as the present embodiment) will be described with reference to the accompanying drawings. In the following embodiments, a "house" is used as an example of a building, but the present invention can be implemented in buildings other than houses, such as nursing homes, offices, stores, hospitals, schools, and other facilities, as well as buildings for various purposes, such as buildings within factories. In addition, in this specification, the concept of "device" includes a single device that performs a specific function by itself, as well as a combination of multiple devices that are distributed and exist independently but work together (in cooperation) to perform a specific function. Furthermore, since the basic information processing technologies (communication / transmission technologies, information acquisition technologies, information recording technologies, information processing technologies, information analysis technologies, etc.) required to realize the contents of this embodiment are well-known technologies, explanations thereof will be omitted. In addition, in this specification, the term "user" refers to a user of the in-building lighting equipment of the present invention, more specifically, a person who moves from a first space to a second space (described later) within the building.

[0019] <<Outline of the building lighting equipment according to this embodiment>> First, an outline of an in-building lighting facility according to this embodiment (hereinafter referred to as an in-building lighting facility 10) will be described with reference to FIG. The in-building lighting equipment 10 is installed in a house H1 having a first space and a second space. The house H1 may include spaces other than the first space and the second space. The "first space" is a space surrounded by a floor, ceiling, walls, etc., and may be either a "habitable room" or a "non-habitable room." A "living room" is defined in Article 2, Paragraph 4 of the Building Standards Act as "a room used continuously for residence, office work, work, gathering, recreation, or other similar purposes," and includes spaces such as a "living room," "dining room," "kitchen," "bedroom," "study," and "family corner." "Non-living room" corresponds to a space other than a living room, such as a "corridor," "stairs," "toilet," "washroom," "bathroom," "dressing room," "entrance," and "hall." The "second space", like the first space, is a space surrounded by a floor, ceiling, walls, etc., and may be either a "habitable room" or a "non-habitable room".

[0020] The first space and the second space are different spaces, and when a user U moves within a house H1, the origin of the movement corresponds to the first space, and the destination of the movement corresponds to the second space. In the example shown in Fig. 1, the house H1 has two spaces R1 and R2 adjacent to each other with a wall (a wall with a door D) in between, and the spaces R1 and R2 can be accessed through the door D. In this way, in the two spaces R1 and R2, when a user U moves from the space R1 to the space R2, the space R1 that is the origin of the movement corresponds to the first space, and the space R2 that is the destination of the movement corresponds to the second space. 1, even if another space (not shown) is interposed between the two spaces R1 and R2, each of the two spaces R1 and R2 may correspond to the first space and the second space, respectively. In other words, the first space and the second space are not limited to two spaces adjacent to each other.

[0021] In this way, in a house H1 having a first space and a second space, the in-building lighting equipment 10 adjusts the lighting in space R2 (corresponding to the second space) to which the user U has moved. More specifically, the in-building lighting equipment 10 detects the user who has moved from space R1, which is the first space, to space R2, which is the second space, and adjusts the lighting in space R2 based on the detection information and the time zone at the time of the move (the current time zone).

[0022] <<Configuration of the building lighting equipment according to this embodiment>> Next, the configuration of the in-building lighting equipment 10 will be described in more detail with reference to FIGS. In the following description, unless otherwise specified, it is assumed that the space R1 is the first space and the space R2 is the second space. As shown in FIG. 1, the building lighting equipment 10 has a plurality of (two in FIG. 1) lighting devices 11A and 11B, a plurality of (two in FIG. 1) signal output devices 12A and 12B, and a control device 13.

[0023] <Lighting equipment> Each of the two lighting devices 11A and 11B emits light into the space R2. The two lighting devices 11A and 11B can be turned on and off independently. That is, one lighting device can be turned on and the other lighting device can be turned off. Each of the two lighting devices 11A and 11B can adjust the amount of light it emits, thereby adjusting the illuminance in the illuminated space R2. Each of the two lighting devices 11A and 11B can also adjust the color temperature of the light it emits.

[0024] As shown in FIG. 1, the two lighting devices 11A and 11B are provided at different heights in the space R2. The lighting device 11A is provided above the lighting device 11B, more specifically, on the ceiling side of the space R2, and in the example shown in FIG. 1, it is provided on the ceiling. Note that the lighting device 11A is not limited to being provided on the ceiling, and may be provided, for example, on a wall of the space R2 near the ceiling. Furthermore, in the example shown in FIG. 1, the lighting device 11A directly irradiates light onto the user U, but this is not limiting. For example, a light-blocking member (not shown) may be provided between the lighting device 11A and the user U. This prevents the user U from being directly illuminated by light from the lighting device 11A, and allows the lighting device 11A to function as so-called indirect lighting.

[0025] Illumination device 11B is provided below illumination device 11A, more specifically, on the floor side of space R2. In the example shown in FIG. 1, illumination device 11B is provided on a wall of space R2 close to the floor. This allows illumination device 11B to illuminate the feet of user U moving within space R2, and can support user U's movement within space R2 even when illumination device 11A is turned off. In the example shown in FIG. 1, a light-shielding member P is provided between illumination device 11B and user U to prevent illumination device 11B from directly irradiating user U with light. However, this is not limited thereto, and for example, light from illumination device 11B may be directly illuminated on user U without providing a light-shielding member P.

[0026] 1, only one lighting device 11A is provided in the space R2, but this is not limiting, and for example, multiple lighting devices 11A may be provided in the space R2. Similarly, in the example shown in FIG. 1, only one lighting device 11B is provided in the space R2, but this is not limiting, and for example, multiple lighting devices 11B may be provided in the space R2.

[0027] <Signal output device> The two signal output devices 12A and 12B detect a user U moving from space R1 (first space) to space R2 (second space) and output a signal. The signal output devices 12A and 12B are sensors, and the type and method thereof are not important as long as they can detect the movement of the user U from space R1 to space R2. In the example shown in FIG. 1, the signal output devices 12A and 12B are assumed to be, for example, well-known human presence sensors, specifically, non-contact infrared sensors that react to the body temperature (heat) and movement of the user U. As shown in FIG. 1, the two signal output devices 12A and 12B are provided in the space R1 and the space R2, respectively.

[0028] More specifically, the signal output device 12A is provided on the ceiling, walls, etc. of the space R1, and is provided on the ceiling of the space R1 in the example shown in Fig. 1. The signal output device 12A detects a user U present in the space R1, and outputs a signal based on the detection to the control device 13, which will be described later. The signal output device 12B is provided on the ceiling, walls, etc. of the space R2, and is provided on the ceiling of the space R2 in the example shown in Fig. 1. The signal output device 12B detects a user U present in the space R2, and outputs a signal based on the detection to the control device 13 described later.

[0029] <Control device> The control device 13 is made up of a computer, for example, a personal computer (PC), etc. The control device 13 may be made up of one computer, or may be made up of multiple computers distributed in parallel. As shown in FIG. 2, the computer constituting the control device 13 includes a processor 13a, a memory 13b, a storage 13c, and a communication interface 13d.

[0030] The processor 13a is composed of, for example, a CPU (Central Processing Unit), an MPU (Micro-Processing Unit), an MCU (Micro Controller Unit), a GPU (Graphics Processing Unit), a DSP (Digital Signal Processor), a TPU (Tensor Processing Unit), or an ASIC (Application Specific Integrated Circuit). The memory 13b is configured by semiconductor memories such as a ROM (Read Only Memory) and a RAM (Random Access Memory).

[0031] The storage 13c is configured by, for example, a flash memory, an HDD (Hard Disc Drive), an SSD (Solid State Drive), an FD (Flexible Disc), an MO disk (Magneto-Optical disc), a CD (Compact Disc), a DVD (Digital Versatile Disc), an SD card (Secure Digital card), or a USB memory (Universal Serial Bus memory), etc. The storage 13c may be built into the computer main body that configures the control device 13, or may be attached to the computer main body in an external format. The communication interface 13d is configured by, for example, a network interface card, a communication interface board, etc. The computer configuring the control device 13 can communicate with, for example, other devices in the house H1 via the communication interface 13d.

[0032] The computer constituting the control device 13 has installed therein, as software, a program for an operating system (OS) and a program for lighting control processing of the in-building lighting equipment 10. These programs are read and executed by the processor 13a, causing the computer constituting the control device 13 to function as the control device 13, and specifically, to execute a series of information processes related to the lighting control processing.

[0033] Next, the configuration of the control device 13 according to this embodiment will be described again from a functional perspective. The control device 13 includes an acquisition unit 21, a determination unit 22, a setting unit 23, and an execution unit 24, as shown in FIG. These functional units are realized by the cooperation of hardware devices included in the computer that constitutes the control device 13 and a program (that is, software) installed in the computer. Each functional unit will be described below.

[0034] [Acquisition Department] The acquiring unit 21 acquires the signals output from the two signal output devices 12A and 12B. The "signal" here may be a binary signal represented by "0" and "1", as long as it can distinguish between a state in which the user U is not detected and a state in which the user U is detected. The acquiring unit 21 acquires the signals output from the signal output devices 12A and 12B at the same time.

[0035] [Judgment section] The determination unit 22 determines whether or not the user U has moved from the first space (space R1) to the second space (space R2) based on the signal acquired by the acquisition unit 21. More specifically, the determination unit 22 compares the signals from the signal output devices 12A and 12B, and when determining that the signal output device 12A detected the user U earlier than the signal output device 12B, determines that the user U has moved from space R1 to space R2.

[0036] [Settings section] When the determination unit 22 determines that the user U has moved from the first space to the second space, the setting unit 23 sets the light irradiation conditions of the two lighting devices 11A and 11B, respectively.

[0037] An example of a method for setting the light irradiation conditions of the two lighting devices 11A and 11B will be described below. First, the setting unit 23 identifies the time period to which the current time belongs (current time period) based on information on the current time obtained from an external source. The "time period" refers to a certain period of time in a day, such as "before going to bed," "while sleeping," and "when waking up." Each time period is set in advance and stored in the storage 13c. "Before going to bed" is, for example, a first period (for example, a period of about three hours) before "bedtime." "During sleep" is, for example, the period between "bedtime" and "wake-up time." "When waking up" is, for example, a second period (for example, a period of about 30 minutes) that comes after "bedtime."

[0038] The "bedtime" and "wake-up time" may be times initially set when the building lighting equipment 10 is installed, or may be times set (periodically) by the user U using an input device (not shown) after the building lighting equipment 10 is installed. The "first period" and the "second period" may be periods initially set when the building lighting equipment 10 is installed, or may be periods set (periodically) by the user U using an input device (not shown) after the building lighting equipment 10 is installed.

[0039] After the current time period is identified, the setting unit 23 identifies the first space and the second space based on the signal output devices 12A and 12B that are the signal output sources. In the example shown in Fig. 1, the space R1 is identified as the first space, and the space R2 is identified as the second space.

[0040] After the current time period, the first space, and the second space are identified, the setting unit 23 identifies a table (see FIG. 4) corresponding to the current time period. As shown in FIG. 4, this table indicates the relationship between the current time period, the first space, the second space, and the light irradiation conditions of the lighting devices 11A and 11B. In the example shown in FIG. 4, the current time period is "before going to bed," so the setting unit 23 identifies the table for "before going to bed" from among the multiple tables corresponding to each time period stored in the storage 13c. Then, the setting unit 23 refers to the identified table for "before going to bed" and identifies the light irradiation condition L for the lighting devices 11A and 11B when the first space is "space R1" and the second space is "space R2," as shown in FIG. 4. The "light irradiation conditions" are information about whether or not the lighting devices 11A and 11B are turned on, the illuminance, the color temperature, and the like.

[0041] In this way, the setting unit 23 identifies the current time period, the first space, and the second space, and sets the light irradiation conditions (e.g., light irradiation condition L) of the two lighting devices 11A and 11B by referring to a table (see FIG. 4) showing the relationship between the identification information and the light irradiation conditions.

[0042] [Executive Department] The execution unit 24 controls the two lighting devices 11A and 11B based on the light irradiation conditions set by the setting unit 23. Specifically, when, for example, a light irradiation condition L is set by the setting unit 23, the execution unit 24 adjusts whether to turn on each of the lighting devices 11A and 11B and adjusts the illuminance and color temperature of each of the lighting devices 11A and 11B based on the light irradiation condition L.

[0043] In this way, the control device 13 controls the two lighting devices 11A and 11B based on the signals output from the two signal output devices 12A and 12B and the current time zone. In particular, in this embodiment, the first space and the second space are spaces R1 and R2 adjacent to each other, so the control device 13 controls the two lighting devices 11A and 11B based on the first space in which the user who has moved to the second space was located immediately before, the signal, and the current time zone.

[0044] <<Lighting control flow according to this embodiment>> Next, a lighting control flow using the above-described in-building lighting equipment 10 will be described. The lighting control flow proceeds along the flow shown in Fig. 5. Note that the lighting control flow shown in Fig. 5 is merely an example, and new steps may be added within the scope of the present invention.

[0045] The lighting control flow is started, for example, when the signal output device 12A in the first space (space R1) detects the user U and generates a signal in response to the detection. At each step of the lighting control flow, the processor 13a of the computer constituting the control device 13 executes processing corresponding to each step. In the lighting control flow, first, when a user U moves from a first space to a second space, the processor 13a detects the user U who has moved from the first space to the second space and outputs a signal (S001). More specifically, as shown in Fig. 1, the processor 13a acquires signals output from a signal output device 12A provided in a space R1 that is the source of the movement and a signal output device 12B provided in a space R2 that is the destination of the movement.

[0046] Next, the processor 13a determines whether the user U has moved from the first space to the second space based on the acquired signal (S002). If the processor 13a determines that the user U has moved from the first space to the second space, the processor 13a identifies the current time period (e.g., "before going to bed," "while asleep," or "when waking up") (S003). Next, the processor 13a sets the light illumination conditions of the two lighting devices 11A and 11B based on the current time period (S004). More specifically, the processor 13a identifies the current time period, the first space, and the second space, and sets the light illumination conditions (e.g., light illumination condition L) of the two lighting devices 11A and 11B by referring to a table showing the relationship between the identification information and the light illumination conditions (see FIG. 4). The processor 13a controls the two lighting devices 11A and 11B based on the set light illumination conditions (S005). The lighting control flow ends when the series of processes described above is completed. The lighting control flow is repeatedly executed every time the signal output device in the first space detects the user U.

[0047] Next, an example in which the lighting control flow is repeatedly executed will be described in more detail with reference to the case of a house H2 shown in FIG. FIG. 6 shows the floor plan of the house H2, and the spaces of the house H2 are a "living room," a "dining room," a "kitchen," a "Western-style room," a "bedroom," a "corridor," a "washroom," a "toilet," and a "bathroom." Each space can be either a first space or a second space, and each space is equipped with a plurality of lighting devices and at least one signal output device. Note that in the house H2, the "living room" and the "dining room" are combined into one space, but for the sake of convenience, in the following description, they will simply be referred to as the "living room." The lighting control flow is executed each time the user U moves between the two spaces in the house H2. The tables shown in Figures 7 to 9 show an example of the user U moving between the spaces in the house H2 during the time periods of "before going to bed," "while asleep," and "upon waking up." In the following description, as for the multiple lighting devices provided in each space, the lighting device located on the ceiling side will be referred to as lighting device 11A, and the lighting device located on the foot side (floor side) will be referred to as lighting device 11B, as in FIG. 1.

[0048] <Before going to bed> In the example of "before going to bed," the processor 13a controls the lighting devices 11A and 11B in the second space so as to guide the user U to go to bed, as shown in FIG. In this example, it is first assumed that a user U is staying in the "living room" as shown in Fig. 7. Note that the lighting devices 11A and 11B in the "living room" are adjusted under the light irradiation condition C1, and specifically, both the ceiling-side and foot-side lighting devices 11A and 11B are turned on at an illuminance of 100 [lx] and a color temperature of 1800 [K]. Next, when the user U moves from the "living room (corresponding to the first space)" to the "corridor (corresponding to the second space)," the processor 13a executes steps S001 to S005 described above. As a result, the lighting devices 11A and 11B in the "corridor," which is the destination of the user U, are controlled under the light illumination condition C2, specifically, under the light illumination condition C1 that is the same as the light illumination condition C1 of the lighting devices 11A and 11B in the "living room," where the user U was previously located.

[0049] Next, when the user U moves from the "corridor (corresponding to the first space)" to the "washroom (corresponding to the second space)," the processor 13a executes steps S001 to S005. As a result, the lighting devices 11A and 11B in the "washroom," the destination of the user U, are controlled under the light illumination condition C3. Compared to the light illumination condition C2 of the lighting devices 11A and 11B in the "corridor" where the user U was just before, the ceiling-side lighting device 11A is turned off and the illuminance of the foot-side lighting device 11B is reduced, specifically from 100 [lx] to 10 [lx]. In this way, by turning off the ceiling-side lighting device 11A and reducing the illuminance of the foot-side lighting device 11B, preparation for bed begins. That is, in the example shown in FIG. 7, the light illumination conditions change when the user U enters the "washroom," and preparation for bed begins. In particular, by turning off the lighting device 11A on the ceiling side, stimulation by light on the side (ceiling side) closer to the field of view (retina) of the user U is reduced, and lighting noise that interferes with falling asleep can be eliminated.

[0050] Next, when the user U moves from the "washroom (corresponding to the first space)" to the "corridor (corresponding to the second space)," the processor 13a executes steps S001 to S005 described above. As a result, the lighting devices 11A and 11B in the "corridor," which is the destination of the user U, are controlled under the light illumination condition C4, which is the same as the light illumination condition C3 of the lighting devices 11A and 11B in the "washroom," where the user U was previously located. Next, when the user U moves from the "corridor (corresponding to the first space)" to the "bedroom (corresponding to the second space)," the processor 13a executes steps S001 to S005 described above. As a result, the lighting devices 11A and 11B in the "bedroom," the destination of the user U, are controlled under the light illumination condition C5, and the illuminance of the lighting device 11B at the user's feet is lowered compared to the light illumination condition C4 of the lighting devices 11A and 11B in the "corridor" where the user U was just before the user U moved. Specifically, the illuminance of the lighting device 11B at the user's feet is lowered from 10 [lx] to 1 [lx]. In this way, by further lowering the illuminance of the lighting device 11B at the user's feet, the user U can be guided into a state of complete sleep.

[0051] In the example shown in FIG. 7, the "corridor" is used twice as the destination of user U, but the light irradiation conditions C2 and C4 of the lighting devices 11A and 11B in the "corridor" are different between the first and second times. In this way, in the building lighting equipment 10, when a person moves from the "living room" (one room) as a first space to the "corridor" (a specified space) as a second space, the first light irradiation condition (light irradiation condition C2) of the multiple lighting devices 11A, 11B provided in the "corridor" is different from the second light irradiation condition (light irradiation condition C4) of the multiple lighting devices 11A, 11B provided in the "corridor" when a person moves from the "corridor" as a first space to the "washroom" (another room) as a second space, and then moves from the "washroom" as the first space to the "corridor" as the second space. In addition, in the example shown in FIG. 7, under light irradiation condition C4 (second light irradiation condition), the illuminance at the point where light from lighting devices 11A and 11B is irradiated is lower than under light irradiation condition C2 (first light irradiation condition). Specifically, the illuminance is reduced from 100 [lx] under light irradiation condition C2 to 10 [lx] under light irradiation condition C4.

[0052] The control of the lighting devices in the space before the user U enters and the light irradiation conditions of the lighting devices 11A and 11B in the space after the user U leaves are not particularly limited and may be set arbitrarily or by the user. In the example shown in Fig. 7, the "space before user U enters" corresponds to the "corridor," "washroom," and "bedroom" when user U is staying in the "living room," in other words, it corresponds to the space that user U is about to enter. Also, in the example shown in Fig. 7, the "space after user U leaves" corresponds to the "living room," "corridor," and "washroom" when user U is staying in the "bedroom," in other words, it corresponds to the space that user U exits after once entering. The same applies to the examples shown in FIGS. 8 and 9 below.

[0053] <Sleeping> In the example of "sleeping," as shown in FIG. 8, a scene is assumed in which the user U goes from the "bedroom" to the "toilet," and the processor 13a controls the lighting devices 11A and 11B in the second space so that the user U can quickly return to a sleeping state when he or she returns to the "bedroom."

[0054] In this example, it is first assumed that user U is asleep in the "bedroom" as shown in Fig. 8. Note that lighting devices 11A and 11B in the "bedroom" are adjusted under light irradiation condition C6, and specifically, only lighting device 11B on the foot side is turned on at an illuminance of 1 [lx] and a color temperature of 1800 [K]. Next, when the user U moves from the "bedroom (corresponding to the first space)" to the "corridor (corresponding to the second space)," the processor 13a executes steps S001 to S005 described above. As a result, the lighting devices 11A and 11B in the "corridor," the destination, are controlled under the light illumination condition C7, and the illuminance of the lighting device 11B on the foot side is increased compared to the light illumination condition C6 of the lighting devices 11A and 11B in the "bedroom," where the user U was previously located; specifically, it is increased from 1 [lx] to 10 [lx]. In this way, by increasing the illuminance of the lighting device 11B on the foot side, the safety of the user U walking in the "corridor" (such as preventing falls) can be ensured.

[0055] Next, when the user U moves from the "corridor (corresponding to the first space)" to the "toilet (corresponding to the second space)," the processor 13a executes steps S001 to S005 described above. As a result, the lighting devices 11A and 11B in the "toilet," which is the destination, are controlled under the light irradiation condition C8. However, when the user U enters the "toilet," the lighting devices 11A and 11B in the "toilet" are controlled to have the same lighting condition C7 as the lighting device 11A and 11B in the "corridor" where the user U was just before entering the "toilet." On the other hand, the lighting devices 11A and 11B in the "toilet" are controlled to gradually change the lighting condition C8 according to the elapsed time from the time the user U entered the "toilet," and the illuminance of the lighting device 11B at the user's feet gradually decreases from 10 [lx] to 5 [lx]. In this way, by gradually decreasing the illuminance of the lighting device 11B at the user's feet, the user U can be gradually guided into a sleep state. In this way, the processor 13a may control the lighting devices 11A and 11B so as to gradually change the light irradiation conditions according to the time that has elapsed since the user entered the second space.

[0056] Next, when the user U moves from the "toilet (corresponding to the first space)" to the "corridor (corresponding to the second space)," the processor 13a executes steps S001 to S005 described above. As a result, the lighting devices 11A and 11B in the "corridor," which is the destination of the user U, are controlled under the light irradiation condition C9, which is the same as the final light irradiation condition C8 (illuminance 5 [lx], etc.) of the lighting devices 11A and 11B in the "toilet," where the user U was just before. Next, when the user U moves from the "corridor (corresponding to the first space)" to the "bedroom (corresponding to the second space)," the processor 13a executes steps S001 to S005 described above. As a result, the lighting devices 11A and 11B in the "bedroom," the destination of the user U, are controlled under the light illumination condition C10, and the illuminance of the lighting device 11B at the user's feet is lowered compared to the light illumination condition C9 of the lighting devices 11A and 11B in the "corridor" where the user U was just before the movement, specifically from 5 [lx] to 1 [lx]. In this way, by further lowering the illuminance of the lighting device 11B at the user's feet, the user U can be guided into a state of complete sleep.

[0057] In the example shown in FIG. 8, as in the example shown in FIG. 7, the "corridor" is used twice as the movement route of the user U, but the light irradiation conditions C7 and C9 of the lighting devices 11A and 11B in the "corridor" are different between the first and second cases. In this way, in the building lighting equipment 10, when a person moves from a "bedroom" (one room) as a first space to a "corridor" (a specified space) as a second space, the first light irradiation condition (light irradiation condition C7) of the multiple lighting devices 11A, 11B provided in the "corridor" is different from the second light irradiation condition (light irradiation condition C9) of the multiple lighting devices 11A, 11B provided in the "corridor" when the person moves from the "corridor" as a first space to the "toilet" (another room) as a second space, and then moves from the "toilet" as the first space to the "corridor" as the second space. In addition, in the example shown in Figure 8, under light irradiation condition C9 (second light irradiation condition), the illuminance at the point where light from lighting devices 11A and 11B is irradiated is lower than under light irradiation condition C7 (first light irradiation condition). Specifically, the illuminance is reduced from 10 [lx] under light irradiation condition C7 to 5 [lx] under light irradiation condition C9.

[0058] <When you wake up> In the example of "when waking up," the processor 13a controls the lighting devices 11A and 11B in the second space so as to guide the user U into a completely awake state. In this example, as shown in Fig. 9, it is first assumed that a user U is asleep in the "bedroom." Note that the lighting devices 11A and 11B in the "bedroom" are controlled under light illumination condition C11, for example, when it is time to wake up. Specifically, under light illumination condition C11, both the ceiling-side and foot-side lighting devices 11A and 11B are turned on at an illuminance of 1000 to 2000 [lx] and a color temperature of 5000 to 12000 [K]. Next, when the user U wakes up and moves from the "bedroom (corresponding to the first space)" to the "corridor (corresponding to the second space)," the processor 13a executes the above steps S001 to S005. As a result, the lighting devices 11A and 11B in the "corridor," which is the destination, are controlled under the light illumination condition C12, specifically, under the light illumination condition C11 that is the same as the light illumination condition C11 of the lighting devices 11A and 11B in the "bedroom," where the user U was previously located. Next, when the user U moves from the "corridor (corresponding to the first space)" to the "washroom (corresponding to the second space)," the processor 13a executes steps S001 to S005 described above. As a result, the lighting devices 11A and 11B in the "washroom," which is the destination of the user U, are controlled under the light illumination condition C13. Specifically, the lighting devices 11A and 11B are controlled under the light illumination condition C12 that is the same as the light illumination condition C12 of the lighting devices 11A and 11B in the "corridor," where the user U was just before the user U moved. Note that although the "washroom" is used as the second space here, it may also be a "toilet" or a "living room," and in such cases, the light illumination condition of the lighting devices 11A and 11B at the destination of the user U may also be the same as the light illumination condition C13.

[0059] <<Effectiveness of this embodiment>> In order to smoothly guide the user U to a sleep state, it is effective to reduce the illuminance under the lighting conditions of the lighting devices 11A and 11B over time. However, if the user U's movement route within the house before or while sleeping is not taken into consideration, there may be a case where the illuminance under the lighting conditions at the destination is higher than the lighting conditions at the source. In this case, the illuminance increases over time, making it impossible to smoothly guide the user U to a sleep state. Furthermore, in order to smoothly guide the user U to an awake state, it is effective to increase the illuminance and color temperature of the lighting conditions of the lighting devices 11A and 11B over time. However, if the user U's movement route within the house is not taken into consideration when waking up, there may be a case where the illuminance and color temperature of the lighting conditions at the destination are lower than the lighting conditions at the source. In this case, the illuminance and color temperature decrease over time, making it impossible to smoothly guide the user U to an awake state.

[0060] 1, the in-building lighting equipment 10 can grasp the movement of the user U from the first space (space R1) to the second space (space R2), that is, the movement route (behavior of the user U) of the user U, based on the signals output by the signal output devices 12A and 12B. As a result, when the user U moves within the house H1, the in-building lighting equipment 10 can appropriately adjust the lighting at the destination of the user U, taking into consideration the movement route and time of day of the user U, etc. In particular, as in the example of the house H2 shown in Figures 6 to 9, the lighting control flow is executed every time the user U moves between two of the multiple spaces arranged in the house H2, so that the lighting at the destination of the user U can be appropriately adjusted each time. This makes it possible to adjust the lighting throughout the house H2, and as a result, it is possible to suppress disruption (disruption) of the user U's circadian rhythm (a rhythm with a cycle of approximately 24 hours in the human body).

[0061] Furthermore, in the in-building lighting facility 10, the plurality of lighting devices 11A, 11B are provided at different heights in the second space. As a result, for example, during "before going to bed" and "while sleeping," the lighting device 11A located on the ceiling side can be turned off and the lighting device 11B located on the feet side can be turned on, thereby smoothly guiding the user U into a sleep state.

[0062] Furthermore, the control device 13 controls the lighting devices 11A and 11B based on the first space where the user U who has moved to the second space was located immediately before, traffic lights, and the current time zone, thereby making it possible to appropriately adjust the lighting at the destination, taking into account the lighting at the source. To explain this more specifically using the example shown in FIG. 8 (the example of "sleeping"), by considering the illuminance of 1 [lx] under the lighting condition C6 of the "bedroom" (corresponding to the first space) where the user U was just before, and setting the illuminance under the lighting condition C7 of the "corridor" (corresponding to the second space) to 10 [lx], it is possible to limit the increase in illuminance along the user U's movement route to about 9 [lx]. This makes it possible to prevent the user U from becoming completely awake. In this way, by treating the space where the user U was just before moving to the second space as the first space, it is possible to appropriately adjust the lighting of the second space according to the illuminance of the lighting of the first space. The reason why the illuminance under the light irradiation condition C7 is set higher than that under the light irradiation condition C6 is to take into consideration the safety of the user U walking through the "corridor."

[0063] Furthermore, the control device 13 controls the lighting devices 11A and 11B so as to gradually change the light irradiation conditions according to the time elapsed since the user entered the second space, thereby making it possible to more appropriately adjust the lighting at the user's destination. To explain this more specifically using the example shown in Fig. 8 (an example of "sleeping"), the building lighting equipment 10 reduces the illuminance under the light irradiation condition C8 from 10 [lx] to 5 [lx] depending on the time that has elapsed since the user U entered the "toilet" as the second space. In this way, the building lighting equipment 10 can more appropriately adjust the lighting in the "toilet" to induce the user U to sleep.

[0064] As described above, the first light irradiation condition and the second light irradiation condition are different in the in-building lighting equipment 10. This allows the lighting of the destination to be more appropriately adjusted depending on the source of movement, even if the destination is the same ("corridor" in FIG. 8) but the source of movement is different ("bedroom" and "toilet" in FIG. 8). In particular, under the second light irradiation condition, the illuminance of the locations irradiated with light from the lighting devices 11A and 11B is lower than under the first light irradiation condition. As a result, even if the destination is the same ("corridor" in FIG. 8), the illuminance is lower at a later time, so that the user can be smoothly guided into a sleep state, for example, during "before going to bed" and "while sleeping."

[0065] Furthermore, the control device 13 controls both the illuminance of the location where light from the lighting devices 11A and 11B is irradiated and the color temperature of the light irradiated by the lighting devices 11A and 11B. This allows for more appropriate adjustment of the lighting at the location where the user U moves, taking into account factors such as circadian rhythm.

[0066] <<Other embodiments>> While one embodiment of the building lighting equipment of the present invention has been described above, the above embodiment is merely an example for facilitating understanding of the present invention and is not intended to limit the present invention. In other words, the present invention may be modified or improved without departing from the spirit and scope of the present invention. Furthermore, the present invention naturally includes equivalents thereof.

[0067] <Modification for multiple users using the house> In the above embodiment, it is assumed that one user U uses the house, but this is not limited to this, and for example, the building lighting equipment of the present invention may be used when multiple users U use the house. Specifically, when multiple users U use the house, the control device 13 may control multiple lighting devices 11A, 11B based on the relationship between the set period set by a user U among the multiple users U who satisfies a predetermined condition and the current time zone. A "user U satisfying a predetermined condition" is, for example, a user U who goes to bed earliest among multiple users U. Note that a user U satisfying a predetermined condition is identified based on, for example, the "bedtime" input by each of the multiple users U. In other words, the processor 13a identifies the earliest "bedtime" from among the "bedtimes" input by each user U, and identifies the user U who inputs the identified "bedtime" as a "user U satisfying a predetermined condition." The "set period" corresponds to, for example, "before going to bed." As described above, "before going to bed" corresponds to a first period (for example, a period of about three hours) before the "bedtime," and is set by the user U who goes to bed earliest inputting the "bedtime" using an input device (not shown). In this way, when the current time period falls within a set period (e.g., "before going to bed") set by a user U who satisfies a predetermined condition (e.g., the user U who goes to bed earliest), the control device 13 may control the plurality of lighting devices 11A, 11B based on the light irradiation conditions according to the set time. As described above, the in-building lighting equipment according to this modified example can appropriately adjust the lighting at the destination of the user U, taking into consideration the user U who goes to bed earliest.

[0068] Furthermore, when the user U moves from the source to the destination, which is a non-occupied room, that is, when the second space is a non-occupied room (for example, a "corridor"), the control device 13 may control the multiple lighting devices 11A, 11B so that light is emitted only from the lowest lighting device 11B among the multiple lighting devices 11A, 11B during the set period. For example, when the current time period falls within the "before going to bed" time period set by the user U who goes to bed earliest, the control device 13 may turn off the lighting device 11A on the ceiling side in the "corridor" and turn on the lighting device 11B on the foot side in the "corridor". On the other hand, the control device 13 may turn on all of the plurality of lighting devices 11A, 11B at a predetermined time outside the set period. The "predetermined time" corresponds to, for example, a "wake-up time" set by the user U who wakes up earliest among the plurality of users U. For example, the control device 13 may turn on all of the plurality of lighting devices 11A, 11B in the "corridor" when the current time reaches the "wake-up time" set by the user U who wakes up earliest. In this way, the in-building lighting equipment according to this modified example can more appropriately adjust the lighting at the destination of user U, taking into consideration the user U who goes to bed earliest and the user U who wakes up earliest.

[0069] In addition, when multiple users U move to the same destination (e.g., "corridor") at the same time during a predetermined time period (e.g., "sleeping"), the control device 13 may control the multiple lighting devices 11A, 11B by prioritizing a light irradiation condition with higher illuminance. Referring to the example of "Sleeping" shown in FIG. 8, as shown in FIG. 8, there are two different light illumination conditions C7 and C9 in the "corridor." More specifically, when a user U moves from a "bedroom" to a "corridor," the light illumination condition of the lighting devices 11A and 11B in the "corridor" at the destination is light illumination condition C7. On the other hand, when another user U moves from a "toilet" to a "corridor," the light illumination condition of the lighting devices 11A and 11B in the "corridor" at the destination is light illumination condition C9. In other words, there are two light illumination conditions for the lighting devices 11A and 11B in the "corridor," and one of them must be prioritized. In this case, in consideration of the safety of the user U while walking, the lighting devices 11A and 11B may be controlled to prioritize the light illumination condition with higher illuminance, i.e., light illumination condition C7.

[0070] It is also assumed that multiple users U may each set a "wake-up time" of a different period. As described above, the "wake-up time" corresponds to a second period (e.g., a period of about 30 minutes) that follows the "wake-up time" input by the user U via an input device (not shown). In this case, even after the time period for the "wake-up time" set by the user U who wakes up earliest has ended, the control device 13 may continue to control the lighting devices 11A and 11B under the light irradiation conditions for the "wake-up time" as long as it is during the period for the "wake-up time" set by another user U.

[0071] <Other variations> In the above embodiment, each of the two lighting devices 11A and 11B can be turned on independently and can adjust the illuminance and color temperature. However, this is not limited thereto. For example, each of the two lighting devices 11A and 11B may be a lighting device that can only be turned on independently and cannot adjust the illuminance and color temperature. Alternatively, each of the two lighting devices 11A and 11B may be a lighting device that can be turned on independently and can adjust only one of the illuminance and color temperature.

[0072] Furthermore, in the above embodiment, the signal output devices 12A and 12B have been described on the assumption that they are known human presence sensors, but the present invention is not limited to this and may be, for example, a sensor that detects that the user U has touched a doorknob (not shown) of the door D. Furthermore, the signal output devices 12A and 12B may be, for example, a sensor that is installed on the floor near the door D and detects the weight of the user U standing in front of the door D. Alternatively, the signal output devices 12A and 12B may be, for example, a position sensor that is installed on a ceiling or a wall and uses laser light to detect whether the user U has passed a specific position.

[0073] 1, the signal output device 12A is provided in the first space (space R1), and the signal output device 12B is provided in the second space (space R2). However, this is not limited to this, and for example, a signal output device may be provided in only one of the first space and the second space. In other words, as long as it is known that the user U has moved from the first space to the second space, the arrangement space of the signal output device does not matter. For example, as an example of providing a signal output device only in the first space, a sensor that detects that the user U has touched the doorknob (not shown) on the first space side of the door D may be provided as shown in Fig. 1. In this case, by detecting that the user U has touched the doorknob on the first space side, it can be estimated that the user U has moved from the first space to the second space. In addition, as an example of a signal output device being provided only in the second space, a first position sensor that detects a first position near the door D in the second space and a second position sensor that detects a second position in the second space that is farther from the door D than the first position may be placed in the second space, and when the user U is detected by the first sensor and then by the second sensor, it may be estimated that the user U has moved from the first space to the second space.

[0074] 8 (the example of "sleeping"), the lighting devices 11A and 11B in the "toilet" are controlled to gradually change the light illumination condition C8 in accordance with the time elapsed since the user entered the "toilet", and the illuminance of the lighting device 11B on the feet side is ultimately reduced from 10 [lx] to 5 [lx]. However, this is not limited to this, and the processor 13a may also control the lighting devices 11A and 11B in a second space other than the "toilet" to gradually change the light illumination condition in accordance with the time elapsed since the user entered the second space. For example, in the example shown in FIG. 8, the processor 13a may perform control so as to gradually change the light irradiation conditions C9 of the lighting devices 11A and 11B in the "corridor" according to the elapsed time from the point in time when the user enters the "corridor (corridor)" from the "toilet (corridor)" (corridor). [Explanation of symbols]

[0075] 10. Indoor lighting equipment 11A,11B Lighting device 12A,12B signal output device 13 Control device 13a processor 13b Memory 13c Storage 13d Communication Interface 21 Acquisition Department 22 Judgment section 23 Setting section 24 Executive Department C1~C13,L Light irradiation conditions D-door H1,H2 Housing P Light blocking material R1,R2 space U User

Claims

1. In a building having a first space and a second space, a plurality of lighting devices are provided at different heights in the second space; a signal output device that detects a user moving from the first space to the second space and outputs a signal; and a control device that controls the plurality of lighting devices based on the signal and the current time zone.

2. 2. The indoor lighting facility according to claim 1, wherein the control device controls the plurality of lighting devices based on the first space in which the user who has moved to the second space was previously located, the signal, and a current time of day.

3. The indoor lighting facility according to claim 1 , wherein the control device controls the plurality of lighting devices so as to gradually change light irradiation conditions in accordance with the elapsed time from the time when the user enters the second space.

4. a first light irradiation condition of the plurality of lighting devices installed in a predetermined space when the user moves from one room to the predetermined space; and 2. The indoor lighting equipment according to claim 1, wherein the second light irradiation conditions of the plurality of lighting devices installed in the predetermined space are different when the user moves from the predetermined space to another room and then when the user moves from the other room to the predetermined space.

5. The in-building lighting facility according to claim 4 , wherein the illuminance of a location irradiated with light from the lighting device is lower under the second light irradiation condition than under the first light irradiation condition.

6. The indoor lighting facility according to claim 1 , wherein the control device controls at least one of an illuminance of a location irradiated with light from the lighting device and a color temperature of the light irradiated by the lighting device.

7. 2. The building lighting facility according to claim 1, wherein when a plurality of users use the building, the control device controls the plurality of lighting devices based on a relationship between a set period set by a user of the plurality of users who satisfies a predetermined condition and a current time period.

8. 8. The indoor lighting facility according to claim 7, wherein the control device controls the plurality of lighting devices so that, when the second space is a non-occupied room, only the lowest lighting device among the plurality of lighting devices emits light during the set period, and turns on all of the plurality of lighting devices during a predetermined time other than the set period.

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