JP7617508B2 - Lighting design support system, lighting design support method and program - Google Patents

Description

The present invention relates to a lighting design support system, a lighting design support method, and a program.

Systems are known that assist in the design of lighting fixture placement in spaces such as rooms.

For example, Patent Document 1 discloses a lighting equipment drawing creation support device (lighting design support system) as such a system.

In Patent Document 1, the lighting design support system includes a means for inputting room attributes, a means for inputting a diagram of the room, and a storage means for storing the required illuminance and the standard lighting fixtures used in the room in association with each other. Furthermore, the lighting design support system includes a program for calculating the number of lighting fixtures required to achieve the illuminance of the room with the lighting fixtures and calculating a pattern for arranging the number of lighting fixtures in the room, and a means for displaying and outputting the calculated pattern by superimposing it on the diagram.

Japanese Patent Application Publication No. 8-87535

By the way, since the human biological rhythm is not a 24-hour cycle, deviations in the biological rhythm occur when a person goes about their daily life. It is also known that there are methods for introducing light into the human eye to regulate the biological rhythm.

In the lighting design support system disclosed in Patent Document 1, the horizontal illuminance on the desk work surface and the hallway floor is used as the illuminance required to design the placement of lighting fixtures, and the light absorbed by the human eye is not taken into consideration. Therefore, with the lighting design support system disclosed in Patent Document 1, it is difficult to design the placement of lighting fixtures in a way that regulates people's biorhythms.

The present invention provides a lighting design support system that can assist in the design of lighting fixture placement to regulate biorhythms.

The lighting design support system according to one aspect of the present invention includes an acquisition unit that acquires spatial information indicating the shape of a space, fixture information indicating the performance of a lighting fixture, and reference information indicating a standard for vertical illuminance in the space, a calculation unit that calculates the placement positions of the lighting fixtures in the space based on the acquired fixture information so that the vertical illuminance of a target area in the space indicated by the acquired spatial information satisfies the standard indicated by the acquired reference information, and an output unit that outputs the calculated placement positions.

A lighting design support method according to one aspect of the present invention is a lighting design support method using a lighting design support system, and includes an acquisition step of acquiring spatial information indicating the shape of a space, fixture information indicating the performance of a lighting fixture, and reference information indicating a standard for vertical illuminance in the space, a calculation step of calculating the placement positions of the lighting fixtures in the space based on the acquired fixture information so that the vertical illuminance of a target area in the space indicated by the acquired spatial information satisfies the standard indicated by the acquired reference information, and an output step of outputting the calculated placement positions.

A computer program according to one aspect of the present invention causes a computer to execute the above-mentioned lighting design support method.

The lighting design support system of the present invention can assist in the design of lighting fixture placement to regulate biorhythms.

FIG. 1 is a diagram showing a configuration of a lighting design support system according to an embodiment. FIG. 2 is a block diagram illustrating a functional configuration of the lighting design support system according to the embodiment. FIG. 3 is a flowchart of a first operation example of the lighting design support system according to the embodiment. FIG. 4 is a diagram for explaining the processing of the calculation unit in the operation example 1 according to the embodiment. FIG. 5 is a diagram for explaining the processing of the calculation unit in the second operation example according to the embodiment. FIG. 6 is a diagram for explaining the processing of the calculation unit in the operation example 3 according to the embodiment. FIG. 7 is a diagram for explaining the processing of the calculation unit in the operation example 4 according to the embodiment. FIG. 8 is a contour map showing a superimposed distribution of vertical illuminance in a target area due to light traveling in a first direction and a distribution of vertical illuminance in a target area due to light traveling in a third direction in an operational example 4 of the embodiment.

The following describes the embodiments in detail with reference to the drawings. Note that the embodiments described below are all comprehensive or specific examples. The numerical values, shapes, materials, components, component placement and connection forms, steps, and order of steps shown in the following embodiments are merely examples and are not intended to limit the present invention. Furthermore, among the components in the following embodiments, components that are not described in an independent claim are described as optional components.

Note that each figure is a schematic diagram and is not necessarily a precise illustration. In addition, in each figure, the same reference numerals are used for substantially the same configurations, and duplicate explanations may be omitted or simplified.

In addition, in this specification and the drawings, the x-axis, y-axis, and z-axis refer to the three axes of a three-dimensional Cartesian coordinate system. In each embodiment, the direction parallel to the vertical direction is the z-axis, and the two axes perpendicular to the z-axis and parallel to the horizontal direction are the x-axis and y-axis.

(Embodiment 1)
[composition]
First, the configuration of a lighting design support system 1 according to the first embodiment will be described.

Figure 1 shows the configuration of a lighting design support system 1 according to this embodiment.

Figure 2 is a block diagram showing the functional configuration of the lighting design support system 1 according to this embodiment.

The lighting design support system 1 according to the embodiment is a system for calculating the position of lighting fixtures in a space, that is, the positions where lighting fixtures are placed. In other words, the lighting design support system 1 is a system for calculating light distribution. Specifically, the lighting design support system 1 calculates the light distribution based on spatial information indicating the shape of the space, fixture information indicating the performance of the lighting fixtures, and reference information indicating the vertical illuminance standard. The lighting design support system 1 is used, for example, when a lighting designer (vendor), who is a first user U1, presents a lighting fixture placement plan for the space to a client (customer), who is a second user U2.

As shown in Figures 1 and 2, the lighting design support system 1 includes a server device 100 and an information terminal 200.

[Server device]
First, the server device 100 will be described. The server device 100 is a cloud server that performs information processing to acquire spatial information, device information, and reference information, and to calculate the positions of lighting fixtures in a space based on the acquired spatial information, device information, and reference information. The server device 100 has a communication unit 110, a calculation unit 120, and a storage unit 130.

The communication unit 110 is a processing unit that enables the server device 100 to communicate with the information terminal 200 via a wide area communication network such as the Internet. The communication unit 110 is a processing unit that acquires information from the information terminal 200 and outputs information to the information terminal 200. The communication performed by the communication unit 110 is, for example, wireless communication, but may also be wired communication. There are no particular limitations on the communication standard used for the communication. The communication unit 110 is, for example, realized by a microcomputer, but may also be realized by a processor.

The communication unit 110 also includes an acquisition unit 111 and an output unit 112.

The acquisition unit 111 is a processing unit that acquires spatial information indicating the shape of the space, device information indicating the performance of the lighting device, and reference information indicating the standard vertical illuminance in the space.

The spatial information is information that indicates the shape of a space. The space indicated by the spatial information is a space in which the second user U2, who is the client, has requested the first user U1, who is the lighting designer, to install lighting fixtures. For example, in this case, this space is a room (indoor space) that is a space surrounded by a ceiling surface, a floor surface, and walls, but is not limited to this and may be a semi-outdoor space, etc. The spatial information may be any data that indicates the shape of the space, and one example is three-dimensional CAD data. The spatial information indicates the size and position of the floor surface, walls, ceiling surface, pillars, doors, windows, etc. of the space. The spatial information also indicates the size and position of equipment (for example, a fire alarm and an air conditioner) that will be placed on the ceiling of the space.

In addition, in this embodiment, the spatial information includes fixture information, which is information about fixtures arranged in the space. The fixture information is, for example, information indicating the type of fixture and the position of the fixture in the space. Here, the types of fixtures are chairs and desks, but are not limited to this and may be shelves, etc. Furthermore, the fixture information may also include information indicating the size of the fixtures to be arranged.

Next, information indicating the type to which a space belongs will be described. The type to which a space belongs indicated by this information may be, for example, a medical care facility (hospital, clinic, etc.), a restaurant, a residence, an office, etc., or more specifically, a cafeteria and a hospital room in a medical care facility. The type to which a space in this embodiment belongs is a cafeteria in a medical care facility. For simplicity, the type to which a space belongs will be referred to as the "space type" below.

The fixture information is information that indicates the performance of a lighting fixture. More specifically, the lighting fixture indicated in the fixture information is a lighting fixture for illuminating the above-mentioned space. The performance of a lighting fixture means, for example, the performance related to the light emitted by the lighting fixture (luminous flux, light distribution, color temperature, etc.) and the size of the lighting fixture.

The reference information is information that indicates the standard vertical illuminance in a space. The standard vertical illuminance indicates, for example, the illuminance of light that can regulate a person's biorhythm.

As an example, a predetermined numerical value of illuminance may be set in advance as a standard for vertical illuminance. In this case, it is preferable that the illuminance is 100 lx or more and 3000 lx or less, more preferably 300 lx or more and 2000 lx or less, and even more preferably 500 lx or more and 1500 lx.

As another example, the standard for vertical illuminance is a value based on the recommended illuminance specified in JIS (Japanese Industrial Standards) Z 9110:2011. In JIS Z 9110:2011, recommended illuminance is specified for each type of space in which the lighting fixture is used. As an example, the types of space disclosed in the above JIS include dining rooms and hospital rooms in health care facilities (hospitals, clinics, etc.), and the recommended illuminance for the dining rooms and hospital rooms is specified as 300 lx and 100 lx, respectively.

If the standard is a value based on the recommended illuminance specified in JIS Z 9110:2011, the standard should be between 2 and 20 times the recommended illuminance.

As a result, the standard for vertical illuminance becomes the illuminance of light that can better regulate a person's biological rhythm. Therefore, when this type of light is received by the human eye, a person's biological rhythm can be better regulated.

The standard should be between 2.5 and 15 times the recommended illuminance, and even better between 3 and 10 times. This makes the standard for vertical illuminance the illuminance of light that can further regulate people's biorhythms.

The type of space in this embodiment is a dining room in a medical and health care facility. In this case, the standard for vertical illuminance is preferably 600 lx or more and 6000 lx or less, more preferably 750 lx or more and 4500 lx or less, and even more preferably 900 lx or more and 3000 lx or less.

Vertical illuminance is as follows. For example, vertical illuminance at a given measurement point is the illuminance measured at the given measurement point by positioning the measurement surface of the illuminometer (i.e. the surface on which the light to be measured is incident) horizontally to the vertical direction. Vertical illuminance at a given measurement point is also the vertical surface illuminance at the given measurement point.

The output unit 112 is a processing unit that outputs the placement position calculated by the calculation unit 120. More specifically, the output unit 112 outputs the calculated placement position to the information terminal 200.

The calculation unit 120 is a processing unit that performs information processing to calculate the placement position of the lighting fixture in the space based on the spatial information, fixture information, and reference information acquired by the acquisition unit 111. Specifically, the calculation unit 120 calculates the placement position of the lighting fixture in the space based on the acquired fixture information so that the vertical illuminance in the target area of the space indicated by the acquired spatial information satisfies the standard indicated by the acquired reference information. In other words, in the placement position calculated by the calculation unit 120, the lighting fixture can emit light that satisfies the vertical illuminance standard toward the target area. The calculation unit 120 is realized, for example, by a microcomputer, but may also be realized by a processor.

The storage unit 130 is a storage device that stores the programs executed by the calculation unit 120 and various information used to perform the above information processing. The storage unit 130 is realized, for example, by a hard disk drive (HDD).

[Information terminal]
First, a description will be given of the information terminal 200. The information terminal 200 is, for example, a general-purpose mobile terminal such as a smartphone or a tablet terminal, but may also be a dedicated terminal for the lighting design assistance system 1.

As shown in FIG. 2, the information terminal 200 has a reception unit 210, a display unit 220, a control unit 230, a terminal memory unit 240, and a terminal communication unit 250.

The reception unit 210 receives operations from the first user U1 and the second user U2. The reception unit 210 is, for example, a capacitive touch panel, but may also be a resistive touch panel.

The reception unit 210 receives a space selection operation for selecting the space in which the lighting fixture is to be placed. In other words, the second user U2, who is the owner, performs an operation to select the space for which construction is to be requested, and the reception unit 210 receives the operation.

When the reception unit 210 receives a space selection operation, it is preferable to receive an operation for selecting the fixtures to be placed in the space and an operation for selecting the type to which the space belongs (in this case, a cafeteria).

The reception unit 210 also receives an equipment selection operation for selecting a lighting fixture. That is, the second user U2, who is the owner, performs an operation to select a lighting fixture to be placed in the space, and the reception unit 210 receives the operation.

The reception unit 210 also accepts a criterion selection operation for selecting a vertical illuminance standard. That is, the second user U2, who is the owner, performs an operation to select, for example, as the vertical illuminance standard, either a value based on the recommended illuminance specified in JIS Z 9110:2011, or an illuminance with a predetermined numerical value for which the vertical illuminance standard is previously determined. Furthermore, the reception unit 210 accepts this operation. Note that, here, the reception unit 210 accepts an operation to select a value based on the recommended illuminance specified in JIS Z 9110:2011 as the vertical illuminance standard.

The display unit 220 displays images. Specifically, the display unit 220 displays an image for accepting a space selection operation, an image for accepting an instrument selection operation, and an image for accepting a reference selection operation. For example, FIG. 1 shows a state in which an image for accepting an instrument selection operation is displayed. In addition, for example, the display unit 220 displays the calculated arrangement positions of the lighting instruments. The display unit 220 is, for example, a display panel such as a liquid crystal panel or an organic EL (Electro Luminescence) panel.

The control unit 230 performs operations such as controlling the display of images on the display unit 220. The control unit 230 is implemented, for example, by a microcomputer, but may also be implemented by a processor. Furthermore, the control unit 230 acquires information corresponding to the operation accepted by the acceptance unit 210 from the device storage unit 240.

The control unit 230 acquires spatial information, such as three-dimensional CAD data showing the shape of the selected space, from the device storage unit 240 as information corresponding to the space selection operation received by the reception unit 210.

When the reception unit 210 receives an operation to select the fixtures to be placed in the space and an operation to select the type to which the space belongs, the control unit 230 acquires the fixture information and information indicating the type to which the space belongs as information corresponding to these operations. In this case, the space information includes information indicating the fixture information.

In addition, the control unit 230 acquires, from the device storage unit 240, appliance information indicating the performance of the lighting appliance associated with the selected lighting appliance as information corresponding to the appliance selection operation received by the reception unit 210.

The control unit 230 also acquires from the device storage unit 240 reference information indicating the selected vertical illuminance reference as information corresponding to the reference selection operation accepted by the acceptance unit 210. Here, a value based on the recommended illuminance defined in JIS Z 9110:2011 is selected, so the control unit 230 acquires from the device storage unit 240 reference information corresponding to the type based on the information indicating the type to which the above-mentioned space belongs. Since the type of space is a cafeteria, the reference may be any value between 2 and 20 times the recommended illuminance for a cafeteria, but here it is between 3 and 10 times (between 900 lx and 3000 lx).

The device storage unit 240 is a storage device that stores the programs executed by the control unit 230. The device storage unit 240 also stores the above-mentioned correspondence information. The device storage unit 240 is realized, for example, by a semiconductor memory.

The terminal communication unit 250 is a processing unit that enables the information terminal 200 to communicate with the server device 100. The terminal communication unit 250 is realized, for example, by a microcomputer, but may also be realized by a processor.

For example, the spatial information, tool information, and reference information acquired by the control unit 230 are transmitted to the server device 100. The communication performed by the terminal communication unit 250 is, for example, wireless communication, but may also be wired communication. There are also no particular limitations on the communication standard used for the communication.

[Operation example 1]
Hereinafter, an operation example 1 of the lighting design support system 1 will be described. FIG. 3 is a flowchart of the operation example 1 of the lighting design support system 1 according to the present embodiment. FIG. 4 is a diagram for explaining the processing of the calculation unit 120 in the operation example 1 according to the present embodiment. FIG. 4(a) is a diagram of the space S viewed in the vertical direction, which is a so-called plan view of the space S. FIG. 4(a) shows the shape (rectangle) of the space S indicated by the space information, the chair C1 and the desk T1 indicated by the furniture information, and the target area A1. FIG. 4(b) is a diagram of the space S viewed in the vertical direction like FIG. 4(a), and in addition to FIG. 4(a), the arrangement position of the lighting fixture L calculated by the calculation unit 120 is shown. FIG. 4(c) is an isopleth diagram showing the vertical illuminance for the target area A1. Here, an example will be described in which the arrangement position of the lighting fixture L is calculated so that the vertical illuminance in the target area A1 of the space S, which is a dining room, satisfies a standard.

First, before S10 shown in FIG. 3, the reception unit 210 of the information terminal 200 receives operations by the first user U1 and the second user U2. Here, the reception unit 210 receives a space selection operation for selecting a space S, an equipment selection operation for selecting a lighting equipment L, and a criterion selection operation for selecting a standard for vertical illuminance. The reception unit 210 also receives an operation for selecting fixtures to be placed in the space S, and an operation for selecting the type to which the space S belongs. As a result, the terminal communication unit 250 transmits space information including fixture information, equipment information, and criterion information to the server device 100.

Then, the acquisition unit 111 of the server device 100 first acquires spatial information (S10). In this operation example, the acquisition unit 111 acquires spatial information including furniture information. Note that (a) in FIG. 4 is an example of spatial information visualized from 3D CAD data. Also, (a) in FIG. 4 shows the positions in the space S of chair C1 and desk T1, which are furniture arranged on the floor surface of the space S. As described above, since the type of the space S is a dining room, the third user who uses the space S eats at chair C1 and desk T1. At this time, the third user sits on chair C1, and the third user's face faces in the direction of desk T1 (i.e., the positive direction of the x-axis).

Next, the acquisition unit 111 acquires the fixture information (S20). Here, the lighting fixture information indicates the performance of the selected lighting fixture L. In addition, here, a lighting fixture L with an elongated shape is selected.

Furthermore, the acquisition unit 111 acquires reference information (S30). As described above, the reference indicated by the reference information here is a value based on the recommended illuminance defined in JIS Z 9110:2011. More specifically, since the space S is a dining room, a vertical illuminance standard of 900 lx or more and 3000 lx or less is used.

Next, the calculation unit 120 determines the target area A1 (S40).

The target area A1 is an area in the space S. The target area A1 is an area where it is assumed that there is a high possibility that a third user who uses the space S is present. More specifically, the target area A1 is an area where the third user is expected to remain for a predetermined period of time (e.g., several minutes to several hours). For example, if the space S is a dining room, the target area A1 is an area where the third user, who is a resident, sits, and if the space S is an office space, the target area A1 is an area where the third user, who is a worker, works. More specifically, the target area A1 may be an area near the eyes of the third user who is expected to be in the space S. For example, the area near the eyes of the third user is a range from a height 10 cm lower to a height 10 cm higher than the eyes of the third user.

Here, the calculation unit 120 determines the target area A1 based on the furniture information acquired by the acquisition unit 111 (S40). More specifically, the calculation unit 120 determines the following area as the target area A1 based on the fact that the furniture indicated in the furniture information is chair C1 and the position where chair C1 is placed in space S. The calculation unit 120 calculates the placement position by setting as the target area A1 an area that overlaps with the position of chair C1 when space S is viewed vertically and that is at a first height.

Here, the shape of the area overlapping with the position of chair C1 (i.e., target area A1) may be a polygon such as a rectangle or a circle, but in this operation example, it is a straight line shape. Furthermore, the first height is the height from the floor surface of space S to the eyes of the third user sitting on chair C1, and as an example, is any height from the floor surface that is 100 cm or more and 140 cm or less. Here, the first height is 120 cm. In other words, target area A1 is set at the eye height of the third user sitting on chair C1.

Furthermore, the calculation unit 120 calculates the placement position of the lighting fixture L in the space S based on the fixture information so that the vertical illuminance of the target area A1 in the space S indicated by the space information satisfies a standard (S50). The calculation unit 120 calculates the placement position under conditions such as "the lighting fixture L is placed on the ceiling surface of the space S", "the lighting fixture L is placed so as to avoid equipment that is placed on the ceiling surface indicated by the space information", and "if multiple lighting fixtures L are placed, the multiple lighting fixtures L are placed at equal intervals".

For example, when multiple lighting fixtures L are arranged, the calculation unit 120 calculates multiple proposed placement positions that satisfy two conditions: "The lighting fixtures L are arranged on the ceiling surface of the space S" and "When multiple lighting fixtures L are arranged, the multiple lighting fixtures L are arranged at equal intervals." Next, the calculation unit 120 calculates whether each of the multiple calculated placement position proposals satisfies the above criteria. Furthermore, the calculation unit 120 determines one or more placement position proposals that satisfy the above criteria. In this way, the calculation unit 120 calculates the placement positions of the lighting fixtures L in the space S. Furthermore, the calculation unit 120 is not limited to the above, and may calculate the above placement positions based on an existing algorithm.

As described above, FIG. 4(b) shows the calculated positions of the lighting fixtures L. Here, six lighting fixtures L are placed on the ceiling surface so that they overlap with the desk T1 in a plan view.

At the placement position calculated by the calculation unit 120, the lighting device L can emit light that meets the vertical illuminance standard toward the target area A1. In other words, when a third user is present in the target area A1, light that meets the vertical illuminance standard reaches and is absorbed by the eyes of the third user. Also, as described above, the standard for vertical illuminance is the illuminance of light that can regulate the biorhythm of a person (third user). Therefore, by the light being absorbed by the eyes of the third user, the biorhythm of the third user is regulated.

The calculation unit 120 also determines the target area A1 based on the furniture information. This allows the calculation unit 120 to determine the area in which the third user is more likely to be present as the target area A1.

The calculation unit 120 also calculates the placement position by setting the area that overlaps with the position of the chair C1 and is at the first height (the height from the floor of the space S to the eyes of the third user sitting on the chair C1) as the target area A1. As a result, the target area A1 is set at the eye height of the third user sitting on the chair C1. Therefore, light that meets the vertical illuminance standard is more easily taken in by the eyes of the third user.

Furthermore, the detailed processing performed by the calculation unit 120 will be described. The calculation unit 120 calculates the placement position so that the vertical illuminance of the target area A1 caused by the light based on the light emitted by the lighting device L and traveling in the first direction satisfies a criterion.

The light based on the light emitted by the lighting fixture L includes light that travels directly from the lighting fixture L toward the target area A1, and light that travels toward the target area A1 by being reflected by the walls of the space S, etc.

Here we describe the directions used in this detailed process.

The first direction is, for example, the negative x-axis direction shown in FIG. 4. Also, FIG. 4(b) shows a second direction D2. The second direction D2 is opposite to the first direction and is the positive x-axis direction. Also, the second direction D2 may be any direction in which the third user is likely to face in the space S (for example, a direction that the user is likely to face for a long time), and as an example, is the direction in which the face of the third user sitting on the chair C1 faces. In this way, the direction in which the third user is likely to face, as indicated by the second direction D2, may be determined, for example, by furniture. Furthermore, the first direction may be determined so that the second direction D2 is the direction in which the third user is likely to face. Also, the first direction may be a direction parallel to the horizontal direction.

In addition, light heading in the first direction is light heading in the negative direction of the x-axis. More specifically, light heading in the first direction is light heading toward target area A1 from an area that is more positive on the x-axis than target area A1. Note that light heading in the first direction is not limited to light parallel to the x-axis, and may be light that has a vector heading toward the negative side of the x-axis.

As described above, when the third user sits on the chair C1, the third user faces in the positive direction of the x-axis, that is, in the second direction D2, and the target area A1 is set at the height of the third user's eyes. Therefore, when detailed processing is performed by the calculation unit 120, light that meets the vertical illuminance criteria is more likely to reach the face of the third user facing the second direction D2, or more specifically, the eyes of the third user.

(c) of FIG. 4 is an isoline map showing the vertical illuminance for the target area A1, and more specifically, it is an isoline map showing the distribution of vertical illuminance when a third user facing in the second direction D2 looks at a vertical plane including the target area A1.

Figure 4(c) also shows the positional relationship between the linear target area A1 in the space S, the floor surface, and the ceiling surface. As described above, the first height, which is the height of the target area A1 from the floor surface, is 120 cm. The vertical illuminance of the target area A1 is 1000 lx or more and 1500 lx or less, which satisfies the vertical illuminance standard (900 lx or more and 3000 lx or less).

The output unit 112 outputs the calculated placement position (S60). In this operation example, the output unit 112 further outputs the position of the target area A1 in the space S, the second direction D2, and the vertical illuminance distribution.

The terminal communication unit 250 of the information terminal 200 acquires the placement position output by the output unit 112, the position of the target area A1 in the space S, the second direction D2, and the distribution of the vertical illuminance.

The display unit 220 of the information terminal 200 displays an image showing the acquired placement position, the position of the target area A1 in the space S, and the second direction D2. (b) of FIG. 4 is an example of the image. The display unit 220 also displays an image showing the acquired distribution of the vertical illuminance. (c) of FIG. 4 is an example of the image.

In this way, by displaying the above image, the second user U2, who is the owner, can easily understand the placement position of the lighting device L, the position of the target area A1, and the distribution of vertical illuminance in the target area A1. Furthermore, the second user U2 can easily understand that by facing the second direction D2 in the target area A1, light that meets the vertical illuminance criteria reaches the third user.

The first height is a fixed height (120 cm) as described above, but it is not limited to this and may be a height having a predetermined range. That is, the first height may be, for example, a height in the range from 110 cm to 130 cm. In other words, in this case, the calculation unit 120 calculates the placement position based on the fixture information, with the area of the vertical plane in the space S as the target area A1.

[Operation example 2]
An operation example 2 of the lighting design support system 1 will be described below. Fig. 5 is a diagram for explaining the processing of the calculation unit 120 in the operation example 2 according to the present embodiment. Fig. 5 is a diagram of the space S viewed in the vertical direction. Fig. 5 shows the shape (rectangle) of the space S indicated by the space information, the chair C1 and the desk T1 indicated by the furniture information, the target area A2, and the arrangement positions of the lighting fixtures L calculated by the calculation unit 120 in the operation example 2. In Fig. 5, the target area A2 is shown as an area surrounded by a dashed-dotted rectangle, and the distribution of vertical illuminance in the space S is depicted as a contour map of dashed-dotted lines.

Operation example 2 mainly shows the same operation as operation example 1, except for the following point.

The one point is a point that the calculation unit 120 determines as the target area A2 in S40 based on the fact that the furniture piece indicated by the furniture piece information is a desk T1 and the position in the space S where the desk T1 is placed.

In S40 of operation example 2, the calculation unit 120 determines the following area as target area A2 based on the acquired furniture information. As an example, the calculation unit calculates the placement position based on the furniture information, with the area of the horizontal plane in the space S as the target area A2. More specifically, the calculation unit 120 determines the area that overlaps with the desk T1 position when the space S is viewed vertically and is at the second height as the target area A2.

Here, the shape of the area that overlaps with the position of the desk T1 (i.e., the target area A2) may be linear, circular, or the like. In this operation example, the shape of the target area A2 is rectangular, the same as the shape of the desk T1 shown in FIG. 5.

The target area A2 may be larger than the desk T1 when viewed vertically in the space S, and may be arranged to cover the periphery of the desk T1. If the shape of the target area A2 and the desk T1 is rectangular, the length of the short side of the target area A2 may be 1.1 to 3.0 times the length of the short side of the desk T1, and the length of the long side of the target area A2 may be 1.1 to 3.0 times the length of the long side of the desk T1.

The second height is the height from the floor of the space S to the eyes of the third user who uses the desk T1, and is, for example, any height from the floor that is 130 cm or more and 170 cm or less. Here, the second height is 150 cm.

The third user who uses desk T1 is assumed to be around desk T1. The target area A2 determined as described above is set at eye height of the third user who uses desk T1.

Furthermore, the calculation unit 120 calculates the placement position of the lighting fixture L in the space S based on the fixture information so that the vertical illuminance of the target area A2 in the space S indicated by the spatial information satisfies a criterion (S50).

As described above, FIG. 5 shows the calculated positions of the lighting fixtures L. Here, ten lighting fixtures L are placed on the ceiling surface. FIG. 5 also shows the calculated distribution of vertical illuminance in the target area A2 by the lighting fixtures L.

The output unit 112 outputs the calculated placement position (S60). In this operation example, the output unit 112 further outputs the position of the target area A2 in the space S and the distribution of vertical illuminance.

At this time, the display unit 220 displays FIG. 5 as an image showing the placement position, the position of the target area A2 in the space S, and the distribution of vertical illuminance. This makes it easier for the second user U2 to understand the position of the target area A2 and the distribution of vertical illuminance.

[Operation example 3]
Operation example 3 of the lighting design support system 1 will be described below. Fig. 6 is a diagram for explaining the processing of the calculation unit 120 in operation example 3 according to the present embodiment. Fig. 6 is a diagram of the space S viewed in the vertical direction. Fig. 6 shows the shape (rectangle) of the space S indicated by the spatial information, a target area A3, and the arrangement positions of the lighting fixtures L calculated by the calculation unit 120 in operation example 3. Note that in Fig. 6, the target area A3 is shown as an area surrounded by a dashed-dotted rectangle, and the distribution of vertical illuminance in the space S is depicted as a contour map of dashed-dotted lines.

Operation example 3 mainly performs the same operation as operation example 1, except for the following two points.

The two points are that the spatial information acquired by the acquisition unit 111 in S10 does not include furniture information, and that the area excluding the exclusion area is determined as the target area A3.

In S10 of operation example 3, the calculation unit 120 acquires spatial information that does not include furniture information.

In addition, in operation example 3, the calculation unit 120 does not perform the process of S40, but performs the following process instead of S40. In operation example 3, the calculation unit 120 determines the area excluding the exclusion area as the target area A3.

The excluded area is an area up to a specified distance from the end of the space S when the space S is viewed vertically. The end of the space S is, for example, the outline of the space S in FIG. 6, and is the wall, windows, and doors of the space S. Although not shown, if a pillar is provided that connects to the floor and ceiling of the space S, the end of the space S may be the outline of the pillar.

In this embodiment, the shape of the space S is rectangular, so FIG. 6 illustrates four predetermined distances B1 to B4 corresponding to the four sides of the rectangle. Here, the predetermined distances B1 to B4 may be 10 cm or more and 150 cm or more, more preferably 30 cm or more and 120 cm or more, and even more preferably 50 cm or more and 100 cm or more. Each of the predetermined distances B1 to B4 in this operation example is 110 cm. Also, each of the predetermined distances B1 to B4 may be a different value.

In this case, the excluded area is an area up to 110 cm from the walls, windows, doors, pillars, etc. of the space S. In other words, the excluded area is an area near the walls, windows, doors, pillars, etc. of the space S. In other words, the excluded area is an area near the corners of the space S. For example, if the type of space S is a cafeteria, shelves and aisles are often placed in the excluded area. In other words, the excluded area is an area where it is assumed that there is a low possibility of a third user using the space S. More specifically, such an excluded area is an area where it is assumed that a third user will only remain for a short time (for example, a few seconds to a dozen seconds). Therefore, the calculation unit 120 calculates the area excluding the excluded area as the target area A3.

In this operation example, the calculation unit 120 further calculates the placement position by taking the area of the horizontal plane in the space S, excluding the exclusion area, as the target area A3.

That is, in operation example 3, target area A3 is a plane parallel to the horizontal direction, more specifically, a plane parallel to the floor surface of space S. The shape of target area A3 may be a circle, a polygon, or the like when space S is viewed vertically, but is rectangular here.

The target area A3 may be an area of the first height or the second height described above. For example, if a chair C1 is placed as a piece of furniture in the space S, the target area A3 may be an area of the first height, and for example, if a desk T1 is placed as a piece of furniture in the space S, the target area A3 may be an area of the second height. Here, the target area A3 is an area of the first height, and the first height is 120 cm.

As a result of the above, the target area A3 for operation example 3 is set at the eye height of the third user sitting on chair C1, excluding the exclusion area.

Furthermore, the calculation unit 120 calculates the placement position of the lighting fixture L in the space S based on the fixture information so that the vertical illuminance of the target area A3 in the space S indicated by the spatial information satisfies a criterion (S50).

As described above, FIG. 6 shows the calculated positions of the lighting fixtures L. Here, 28 lighting fixtures L are placed on the ceiling surface. FIG. 6 also shows the calculated distribution of vertical illuminance in the target area A3 by the lighting fixtures L.

The output unit 112 outputs the calculated placement position (S60). In this operation example, the output unit 112 further outputs the position of the target area A3 in the space S and the distribution of vertical illuminance.

At this time, the display unit 220 displays FIG. 6 as an image showing the placement position, the position of the target area A3 in the space S, and the distribution of vertical illuminance. This makes it easier for the second user U2 to understand the position of the target area A3 and the distribution of vertical illuminance.

[Operation Example 4]
Hereinafter, an operation example 4 of the lighting design support system 1 will be described. FIG. 7 is a diagram for explaining the processing of the calculation unit 120 in the operation example 4 according to the present embodiment. FIG. 7(a) is a diagram of the space S viewed in the vertical direction. FIG. 7(a) shows the shape (rectangle) of the space S indicated by the spatial information, the target area A4, and the arrangement positions of the lighting fixtures L calculated by the calculation unit 120 in the operation example 4. In FIG. 7(a), the target area A4 is shown as an area surrounded by a dashed-dotted rectangle. Furthermore, FIG. 7(b) and FIG. 7(c) are diagrams of the space S viewed in the vertical direction like FIG. 7(a), and in addition to the diagram shown in FIG. 7(a), the distribution of the vertical illuminance in the target area A4 is shown as a contour map of a two-dot dashed line.

Operation example 4 mainly performs the same operation as operation example 1, except for the following three points:

The three points are that the spatial information acquired by the acquisition unit 111 in S10 does not include fixture information, that the acquisition unit 111 acquires a selection area selected by the second user U2, who is the client, and that the calculation unit 120 determines the selection area as the target area A4.

In this operation example, prior to S10, the reception unit 210 of the information terminal 200 receives an operation for selecting a selected area. That is, the second user U2, who is the owner, performs an operation to select a specific area in the space S as the selected area, and the reception unit 210 receives the operation.

As described above, here, the selection area selected by the second user U2 is used as the target area A4. In other words, the second user U2 can select the target area A4 by himself/herself. The second user U2 selects an area in which it is assumed that there is a high possibility that a third user who will use the space S is present as the selection area. Here, as an example, the selection area is a plane parallel to the horizontal direction, more specifically, a plane parallel to the floor surface of the space S. The shape of the selection area may be a circle, a polygon, etc. when the space S is viewed vertically, but is rectangular here.

Furthermore, the control unit 230 of the information terminal 200 acquires selection area information indicating the position of the selection area in the space S from the terminal storage unit 240 as information corresponding to the above operation accepted by the acceptance unit 210.

Then, in S10 of operation example 4, the calculation unit 120 acquires spatial information that does not include furniture information.

Furthermore, in operation example 4, for example, between S10 and S20, the acquisition unit 111 acquires area information indicating the position of a selection area in space S that has been selected by the second user U2.

Furthermore, in operation example 4, the calculation unit 120 does not perform the process of S40, but performs the following process instead of S40. In operation example 4, the calculation unit 120 determines the placement position by setting the selected area indicated by the area information acquired by the acquisition unit 111 as the target area A4.

Next, the calculation unit 120 calculates the placement position of the lighting fixture L in the space S based on the fixture information so that the vertical illuminance of the target area A4 in the space S indicated by the spatial information satisfies the criteria (S50).

As shown in FIG. 7(a), the above selected area is used as the target area A4, and FIG. 7(a) also shows the calculated positions of the lighting fixtures L. Here, 28 lighting fixtures L are placed on the ceiling surface.

Here, we explain the detailed processing performed by the calculation unit 120.

The calculation unit 120 calculates the placement position such that the vertical illuminance of the target area A4 caused by the light based on the light emitted by the lighting device L and traveling in a first direction satisfies a criterion. Similarly, the calculation unit 120 calculates the placement position such that the vertical illuminance of the target area A4 caused by the light based on the light emitted by the lighting device L and traveling in a third direction satisfies a criterion. Also, FIG. 7(b) shows the second direction D2, and FIG. 7(c) shows the fourth direction D4.

The third direction may be any direction parallel to the horizontal direction, and is, for example, the negative y-axis direction shown in FIG. 7. The fourth direction D4 is opposite to the third direction and is the positive y-axis direction. Note that the third direction corresponds to the first direction, and the fourth direction D4 corresponds to the second direction D2, so a detailed description will be omitted.

In this case, light that meets the vertical illuminance criteria is more likely to reach the face of the third user facing the second direction D2 (positive direction of the x-axis) in the target area A4, more specifically, the eyes of the third user. Similarly, light that meets the vertical illuminance criteria is more likely to reach the face of the third user facing the fourth direction D4 (positive direction of the x-axis) in the target area A4, more specifically, the eyes of the third user.

In addition, in (b) and (c) of FIG. 7, the distribution of vertical illuminance in the target area A4 is depicted in a contour map of a two-dot chain line. More specifically, in (b) of FIG. 7, the contour map shows the distribution of vertical illuminance in the target area A4 due to light directed in the first direction. In other words, in (b) of FIG. 7, the contour map shows the distribution of vertical illuminance when the third user faces the second direction D2. In addition, in (c) of FIG. 7, the contour map shows the distribution of vertical illuminance in the target area A4 due to light directed in the third direction. In other words, in (c) of FIG. 7, the contour map shows the distribution of vertical illuminance when the third user faces the fourth direction D4. More specifically, in (b) and (c) of FIG. 7, the vertical illuminance of the dotted area of the target area A4 meets the criteria. In other words, in this operation example, the calculation unit 120 calculates the placement position of the lighting fixture L in the space S based on the fixture information so that the vertical illuminance of a part of the target area A4 in the space S indicated by the spatial information satisfies the criterion.

The output unit 112 then outputs the calculated placement position (S60). In this operation example, the output unit 112 also outputs the position of the target area A4 in the space S, and the second direction D2 and the fourth direction D4. The output unit 112 also outputs the distribution of vertical illuminance in the target area A4 due to the light traveling in the first direction, and the distribution of vertical illuminance in the target area A4 due to the light traveling in the third direction.

The device communication unit 250 of the information terminal 200 acquires the placement position, the position of the target area A4 in the space S, and the second direction D2 and fourth direction D4 output by the output unit 112. Here, the device communication unit 250 also acquires the distribution of vertical illuminance in the target area A4 due to the light heading in the first direction output by the output unit 112, and the distribution of vertical illuminance in the target area A4 due to the light heading in the third direction.

The display unit 220 of the information terminal 200 displays an image showing the acquired placement position and the position of the target area A1 in the space S. (a) of FIG. 7 is an example of the image. The display unit 220 also displays an image showing the acquired second direction D2 and the distribution of vertical illuminance in the target area A4 due to the light heading in the first direction. (b) of FIG. 7 is an example of the image. The display unit 220 also displays an image showing the acquired fourth direction D4 and the distribution of vertical illuminance in the target area A4 due to the light heading in the third direction. (c) of FIG. 7 is an example of the image.

In this way, by displaying the above image, the second user U2, who is the owner, can easily understand the placement position of the lighting device L, the position of the target area A4, and the distribution of vertical illuminance in the target area A4. In addition, the second user U2 can easily understand that light that meets the vertical illuminance criteria reaches the third user by facing the second direction D2 or the fourth direction D4 in the target area A4.

In addition, the output unit 112 may output content different from the above.

Specifically, the output unit 112 outputs a superimposed distribution of vertical illuminance in the target area A4 due to light traveling in the first direction and a superimposed distribution of vertical illuminance in the target area A4 due to light traveling in the third direction. Fig. 8 is a contour map showing a superimposed distribution of vertical illuminance in the target area A4 due to light traveling in the first direction and a superimposed distribution of vertical illuminance in the target area A4 due to light traveling in the third direction in operation example 4 according to the present embodiment.

Here, FIG. 8 shows the vertical illuminance distributions shown in (b) and (c) of FIG. 7 superimposed thereon. In other words, the areas marked with dark dots in FIG. 8 are areas where light that meets the vertical illuminance criteria reaches the eyes of the third user regardless of whether the third user faces in the second direction D2 or the fourth direction D4. Similarly, the areas marked with light dots in FIG. 8 are areas where light that meets the vertical illuminance criteria reaches the eyes of the third user when the third user faces in the second direction D2 or the fourth direction D4.

At this time, the display unit 220 displays FIG. 8 as an image showing the above two vertical illuminance distributions superimposed on each other. This makes it easier for the second user U2 to understand that light that meets the vertical illuminance criteria will reach the third user by facing the second direction D2 or the fourth direction D4 in the target area A4.

[Effects, etc.]
In operation example 1 according to the present embodiment, lighting design support system 1 includes acquisition unit 111, calculation unit 120, and output unit 112. Acquisition unit 111 acquires spatial information indicating the shape of space S, fixture information indicating the performance of lighting fixtures L, and reference information indicating a standard for vertical illuminance in space S. Based on the acquired fixture information, calculation unit 120 calculates an arrangement position of lighting fixture L in space S such that the vertical illuminance of target area A1 in space S indicated by the acquired spatial information satisfies the standard indicated by the acquired reference information. Output unit 112 outputs the calculated arrangement position.

As a result, in the placement position calculated by the calculation unit 120, the lighting device L can emit light that meets the vertical illuminance standard toward the target area A1. In other words, when a third user is present in the target area A1, light that meets the vertical illuminance standard reaches and is absorbed by the eyes of the third user. Also, as described above, the standard for vertical illuminance is the illuminance of light that can regulate the biorhythm of a person (third user). Therefore, by having the light be absorbed by the eyes of the third user, the biorhythm of the third user is regulated. In other words, the lighting design support system 1 according to this embodiment can support the design of the placement position of the lighting device L to regulate the biorhythm.

In addition, in operation example 1, the standard is between 2 and 20 times the recommended illuminance specified in JIS Z 9110:2011.

As a result, the standard for vertical illuminance becomes the illuminance of light that can better regulate the third user's biological rhythm. Therefore, by having such light enter the third user's eyes, the third user's biological rhythm can be better regulated.

In addition, in operation example 1, the spatial information includes furniture information, which is information about furniture arranged in the space S. The calculation unit 120 determines the target area A1 based on the furniture information.

This allows the calculation unit 120 to determine the area where the third user is more likely to be present as the target area A1.

In addition, in operation example 1, the furniture information indicates that the furniture is a chair C1, and indicates the position of the chair C1 in the space S. The calculation unit 120 calculates the placement position by setting as the target area A1 an area that overlaps with the position of the chair C1 when the space S is viewed vertically, and that is an area at a first height that is the height from the floor of the space S to the eyes of the user sitting in the chair C1.

As a result, the target area A1 is located at eye height of the third user sitting on the chair C1. This makes it easier for the third user's eyes to take in light that meets the vertical illuminance criteria.

In addition, in operation example 2, the furniture information indicates that the furniture is a desk T1, and indicates the position of the desk T1 in the space S. The calculation unit 120 calculates the placement position by setting as a target area A2 an area that overlaps with the position of the desk T1 when the space S is viewed vertically, and that is at a second height that is the height from the floor of the space S to the eyes of a user using the desk T1.

As a result, the target area A2 is located at eye height of the third user who uses the desk T1. This makes it easier for the third user's eyes to take in light that meets the vertical illuminance criteria.

In addition, in operation example 1, the calculation unit 120 calculates the placement position based on the fixture information, with the area of the vertical plane in the space S as the target area A1.

This allows the vertical plane to be used as the target area A1.

In addition, in operation example 2, the calculation unit 120 calculates the placement position based on the fixture information, with the horizontal area in the space S as the target area A2.

This allows the horizontal plane to be used as the target area A2.

In addition, in operation example 4, the acquisition unit 111 acquires area information indicating the position of a selection area in space S that has been selected by a user. The calculation unit 120 calculates the placement position of the selection area indicated by the acquired area information as the target area A4.

This allows the second user U2 to select the target area A4 by himself/herself. The second user U2 can select an area where it is assumed that there is a high possibility that a third user who uses the space S is present as the selected area.

In addition, in operation example 3, when space S is viewed vertically, the area from the end of space S up to a predetermined distance B1 to B4 is set as the exclusion area. The calculation unit 120 calculates the placement position by setting the area of the horizontal plane in space S excluding the exclusion area as target area A3.

As a result, the target area A3 is a horizontal area excluding the excluded area where the third user is unlikely to be present, and is set at eye height of the third user sitting on the chair C1. This makes it easier for light that meets the vertical illuminance criteria to be taken in by the eyes of the third user.

In addition, in operation example 3, the predetermined distances B1 to B4 are 10 cm or more and 150 cm or less.

This makes it easier for light that meets the vertical illuminance criteria to reach the third user's eyes.

Furthermore, in operation example 1, the output unit 112 outputs the position of the target area A1 in the space S.

This makes it easier for the second user U2, who is the owner, to understand the location of the target area A1.

Furthermore, in operation example 2, the output unit 112 outputs the distribution of vertical illuminance in the target area A2.

This makes it easier for the second user U2 to understand the distribution of vertical illuminance.

In addition, in operation example 1, the calculation unit 120 calculates the placement position such that the vertical illuminance of the target area A1 due to the light emitted by the lighting device L and traveling in the first direction satisfies the acquired criteria. The output unit 112 outputs the placement position and the second direction D2 that is opposite to the first direction.

This makes it easier for light that meets the vertical illuminance criteria to reach the eyes of the third user facing in the second direction D2. Also, by facing in the second direction D2 in the target area A1, the second user U2, who is the owner, can more easily understand that light that meets the vertical illuminance criteria will reach the third user.

In addition, in operation example 4, the calculation unit 120 calculates the placement position such that the vertical illuminance of the target area A4 due to the light emitted by the lighting device L and traveling in the third direction satisfies the acquired criteria. The output unit 112 outputs the placement position, the second direction D2, and the fourth direction D4 that is opposite to the third direction.

This makes it easier for light that meets the vertical illuminance criteria to reach the eyes of the third user facing in the fourth direction D4. Also, by facing in the fourth direction D4 in the target area A4, the second user U2, who is the owner, can more easily understand that light that meets the vertical illuminance criteria will reach the third user.

Furthermore, in operation example 4, the output unit 112 outputs the distribution of vertical illuminance in the target area A4 due to light traveling in the first direction and the distribution of vertical illuminance in the target area A4 due to light traveling in the third direction.

This makes it easier for the second user U2, who is the owner, to understand the distribution of vertical illuminance in the target area A4. In addition, the second user U2 can easily understand that light that meets the vertical illuminance criteria reaches the third user by facing the second direction D2 or the fourth direction D4 in the target area A4.

In addition, in operation example 4, the output unit 112 outputs a superimposed distribution of vertical illuminance in the target area A4 due to light traveling in the first direction and a distribution of vertical illuminance in the target area A4 due to light traveling in the third direction.

This makes it easier for the second user U2 to understand that by facing the second direction D2 or the fourth direction D4 in the target area A4, light that meets the vertical illuminance criteria will reach the third user.

In addition, in the operation example 1, the lighting design support method is a lighting design support method by the lighting design support system 1, and includes acquisition steps S10, S20, and S30, a calculation step S50, and an output step S60. The acquisition steps S10, S20, and S30 acquire spatial information indicating the shape of the space S, device information indicating the performance of the lighting device L, and reference information indicating the standard of vertical illuminance in the space S. The calculation step S50 calculates the arrangement position of the lighting device L in the space S based on the acquired device information so that the vertical illuminance of the target area A1 in the space S indicated by the acquired spatial information satisfies the standard indicated by the acquired reference information. The output step S60 outputs the calculated arrangement position.

In addition, in operation example 1, the computer program causes the computer to execute the lighting design support method described above.

As a result, in the placement position calculated by calculation step S50, the lighting device L can emit light that meets the vertical illuminance standard toward the target area A1. In other words, when a third user is present in the target area A1, light that meets the vertical illuminance standard reaches and is absorbed by the eyes of the third user. Also, as described above, the standard for vertical illuminance is the illuminance of light that can regulate the biorhythm of a person (third user). Therefore, by having the light be absorbed by the eyes of the third user, the biorhythm of the third user is regulated. In other words, the lighting design support method according to this embodiment can support the design of the placement position of the lighting device L to regulate the biorhythm.

Other Embodiments
Although the embodiment has been described above, the present invention is not limited to the above embodiment.

In the above embodiment, the processing performed by a specific processing unit may be executed by another processing unit. Furthermore, the order of multiple processes may be changed, or multiple processes may be executed in parallel. Furthermore, operation example 1, operation example 2, operation example 3, and operation example 4 of the above embodiment may be combined in any manner.

When the reception unit 210 of the information terminal 200 receives the above-mentioned device selection operation, the reception unit 210 may receive the number of selected lighting devices L to be used. In other words, the first user U1 and the second user U2 can themselves specify the number of selected lighting devices L to be used.

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

Furthermore, each component may be realized by hardware. For example, each component may be a circuit (or an integrated circuit). These circuits may form a single circuit as a whole, or each may be a separate circuit. Furthermore, each of these circuits may be a general-purpose circuit, or a dedicated circuit.

The general or specific aspects of the present invention may be realized as a system, an apparatus, a method, an integrated circuit, a computer program, or a computer-readable recording medium such as a CD-ROM. The present invention may also be realized as any combination of a system, an apparatus, a method, an integrated circuit, a computer program, and a recording medium.

For example, the present invention may be realized as a behavior estimation method executed by a computer such as a lighting design support system, or as a program for causing a computer to execute such a behavior estimation method. The present invention may also be realized as a program for causing a general-purpose computer to operate as the information terminal of the above-mentioned embodiment. The present invention may also be realized as a computer-readable non-transitory recording medium on which these programs are recorded.

In addition, the present invention also includes forms obtained by applying various modifications to each embodiment that a person skilled in the art may conceive, or forms realized by arbitrarily combining the components and functions of each embodiment within the scope of the spirit of the present invention.

1 Lighting design support system 111 Acquisition unit 112 Output unit 120 Calculation unit 220 Display unit 230 Control unit A1, A2, A3, A4 Target area B1, B2, B3, B4 Predetermined distance C1 Chair D2 Second direction D4 Fourth direction L Lighting Equipment S Space T1 Desk

Claims (16)

an acquisition unit that acquires space information indicating a shape of a space, lighting device information indicating performance of lighting devices, and reference information indicating a reference for vertical illuminance in the space;
a calculation unit that calculates, based on the acquired device information, positions of the lighting devices in the space such that a vertical illuminance of a target area in the space indicated by the acquired spatial information satisfies the criteria indicated by the acquired reference information; and
an output unit that outputs the calculated arrangement position ,
The calculation unit calculates the arrangement position such that a vertical illuminance of the target area due to light that is based on light emitted by the lighting device and travels in a first direction satisfies the acquired criterion; and
The output unit outputs the arrangement position and a second direction opposite to the first direction.
Lighting design support system. The lighting design support system according to claim 1 , wherein the standard is between 2 and 20 times the recommended illuminance specified in JIS Z 9110:2011. The space information includes furniture information that is information regarding furniture to be arranged in the space,
The lighting design support system according to claim 1 or 2, wherein the calculation unit determines the target area based on the fixture information. The furniture information indicates that the furniture is a chair and the position of the chair in the space,
4. The lighting design support system according to claim 3, wherein the calculation unit calculates the arrangement position by using as the target area an area that overlaps with the position of the chair when the space is viewed vertically and that is at a first height that is a height from a floor surface of the space to the eyes of a user sitting in the chair. The furniture information indicates that the furniture is a desk and the position of the desk in the space,
4. The lighting design support system according to claim 3, wherein the calculation unit calculates the arrangement position by using as the target area an area that overlaps with the position of the desk when the space is viewed vertically and that is at a second height that is a height from a floor surface of the space to the eyes of a user using the desk. The lighting design support system according to any one of claims 3 to 5, wherein the calculation unit calculates the placement position based on the fixture information, with a vertical area or a horizontal area in the space as the target area. the acquisition unit acquires area information indicating a position of a selection area in the space selected by a user;
The lighting design support system according to claim 1 , wherein the calculation unit calculates the arrangement position by taking the selected area indicated by the acquired area information as the target area. When the space is viewed vertically, if a region from an end of the space to a predetermined distance is defined as an exclusion region,
The lighting design support system according to claim 1 , wherein the calculation unit calculates the arrangement position by using an area of a horizontal plane in the space excluding the exclusion area as the target area. The lighting design support system according to claim 8 , wherein the predetermined distance is equal to or greater than 10 cm and equal to or less than 150 cm. The lighting design support system according to claim 1 , wherein the output unit outputs a position of the target area in the space. The lighting design support system according to claim 1 , wherein the output unit outputs a distribution of vertical illuminance in the target area. The calculation unit calculates the arrangement position such that a vertical illuminance of the target area due to light based on light emitted by the lighting device and traveling in a third direction satisfies the acquired criterion; and
The lighting design support system according to claim 1 , wherein the output section outputs the arrangement position, the second direction, and a fourth direction opposite to the third direction. The lighting design support system according to claim 12 , wherein the output unit outputs a distribution of vertical illuminance in the target area caused by light traveling in the first direction and a distribution of vertical illuminance in the target area caused by light traveling in the third direction. 13. The lighting design support system according to claim 12 , wherein the output unit outputs a distribution of vertical illuminance in the target area caused by light traveling in the first direction and a distribution of vertical illuminance in the target area caused by light traveling in the third direction in a superimposed manner. A lighting design support method using a lighting design support system, comprising:
An acquisition step of acquiring space information indicating a shape of a space, lighting device information indicating performance of lighting devices, and reference information indicating a reference for vertical illuminance in the space;
a calculation step of calculating positions of the lighting fixtures in the space based on the acquired fixture information so that the vertical illuminance of a target area in the space indicated by the acquired spatial information satisfies the standard indicated by the acquired standard information;
and an output step of outputting the calculated arrangement position ,
In the calculation step, the arrangement position is calculated so that a vertical illuminance of the target area due to light based on light emitted by the lighting device and traveling in a first direction satisfies the acquired criterion;
In the output step, the arrangement position and a second direction opposite to the first direction are output.
Lighting design support method. A computer program for causing a computer to execute the lighting design support method according to claim 15 .

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